CGE- N22E□

Air expansion clamp

ａｉｒ

air Expansion clamp
Double acting 1 MPa

CGE

CGE

Air expansion clamp

model

model

90

CGE

DoubleactingCGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingSpecifications
Grip inner diameter

CGE ー N22E

070

073

076

085

09

10

11

12

13

：Number of grippers

079

082

：2 Grippers：3 Grippers

indicates made to order.

CGE-N22E

Model

070

073

076

079

082

085

09

10

11

2 Grippers

Number of grippers

0.81

kN

Radial expansion force (air pressure 0.5MPa)kN

Taper rod stroke

mm

4.8

Clamp stroke

mm

1.2

2.81

2.52

Clamp

cm

3

8.7

Unclampcm 3

9.7

Allowable eccentricity 1

mm

±0.5

Recommended air blow pressure

MPa

0.3

Recommended sensor air pressure

MPa

0.2

Mass

0.74

kg

Recommended tightening
torque of mounting screws 2

0.75
7

N･m

Aluminum, steel and others (HRC25 or below).

Workpiece material

13

3 Grippers

Clamping force (air pressure 0.5MPa)

Cylinder capacity

12

Cast iron are not usable.

Allowable min. grip inner diameter

mm

6.7

7.0

7.3

7.6

7.9

8.2

8.7

9.7

10.7

11.7

12.7

Allowable max. grip inner diameter

mm

7.4

7.7

8.0

8.3

8.6

9.2

9.7

10.7

11.7

12.7

13.7

3°or below

Grip inner diameter circularity

0.1 or below● Proof pressure：1.5 MPa● Operating temperature：0‒70 ℃● Fluid used：Air

CGE

Grip inner diameter tapering angle (Draft angle)● Pressure range：0.3‒1 MPa

Air expansion clamp

Grip inner diameter● Please inquire if above terms are not applied.
1：By the eccentric mechanism, the expansion clamp does not have a workpiece positioning function.

2：ISO R898 class 12.9

Clamping force & air pressure
1.8
1.6

CGE-N22E

Clamping force (kN)

1.4
1.2

Air pressure

1.0

MPa 0.3

Clamping force

0.8

F=1.617×P

0.4

0.5

0.6

0.7

0.8

0.9

1.0

kN 0.49 0.65 0.81 0.97 1.13 1.29 1.46 1.62

0.6

P：Air pressure (MPa)
0.4
0.2
0

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Air pressure (MPa)To download CAD data / To get updated information, visit www.pascaleng.co.jp

91CGE- N22E□

model

Air expansion clamp

CGE-N22E

model

ａｉｒ

CGE-N22E

model

DoubleactingCGE-N22E

2 Grippers

2 Grippers

3 Grippers

ø7.0 7.3 7.6 7.9 8.2

ø8.5 9 10

ø11 12 13

Sensor nozzle

PAT.

Unclamping sensor valve

CGE

Air expansion clamp

Incomplete clamping sensor valve

Sensor air：IN

Air blow：IN
Unclamping detection ：Exh.
Incomplete clamping detection ：Exh.

Workpiece seating detection
Unclamping detection
Incomplete clamping detection

Superior tool accessibility

Short tool

Dramatically improved flatness & roughness

Non-distorted clamping at bottom of workpiece

Tilted ﬂange reduces
accumulation of chips
Adequate space prevents
clogging of metal chips

Bore depth
20 mm (CGE-N22)

Short lift stroke
Compact ＆ simple jig
Air expansion clamp model CGE

92

Thinner jig palletCGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingWorkpiece setting① Taper rod and gripper are raised by pistons Ⓐ, Ⓑ and sleeve. The gripper is drawn inward within the taper
rod diameter.
② Set the workpiece onto the seating surface.

Taper rod

Workpiece

Gripper

Seating surface

SleevePiston Ⓐ

Piston Ⓑ

Unclamping
air pressure

Air expansion clamp

Clamping
air pressure

Workpiece holding① Piston Ⓑ and taper rod lower with piston Ⓐ being held at upper stroke end position by clamping air
pressure.

CGE② The gripper expands horizontally along the tapered surface to grip inner face of clamping hole holding
its position at upper stroke end by piston Ⓐ and sleeve.
③ The gripper securely grips the inner face of clamping hole and pulls the workpiece down firmly onto theseating surface.
Clamping hole

Tapered surface

Workpiece

Taper rod

Gripper

Seating surface

SleevePiston Ⓐ

Piston Ⓑ

Clamping
air pressure

Unclamping
air pressure

To download CAD data / To get updated information, visit www.pascaleng.co.jp93CGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingLarge gripper expansion stroke
The gripper expands horizontally 1.0mm( ), which enables the accommodation of dimensional variations in diecast
bore diameters and ensures workpiece is held securely.
Grip inner diameterø10

Taper rod diameter
ø9.55

Min. grip inner diameterø9.7

Max. grip inner diameterø10.7

Draft angle of grip inner diametermax. 3°each side

Example：model CGE-N22E10：0.7mm stroke for CGE-N22E070, 073, 076, 079, 082

Taper rod and gripper with superior durability① The holding force of expansion clamp is transmitted from tapered surface to gripper, making it possible for the gripper
to hold onto inner face of clamping hole and hold the workpiece on the seating surface for secure workpiece clamping.

Air expansion clamp② Special steel with superior abrasion resistance is used for gripper to improve durability.
③ Tip section of taper rod has larger diameter than gripper and is well
chamfered to be a better guide when setting the workpiece.
Clamping hole
① Tapered surface③ Taper rod tip section

GripperCGE② Gripper

Seating surface can be reground (Max. 0.1 mm)① When seating surface is damaged, the flange section can be dismounted and reground.
② Flange can be easily dismounted and reassembled at production site.

① Seating surface② Flange94

CGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingClamping hole pitch errors can be tolerated

Taper rod and gripper slide radially and tolerate pitch
errors (±1mm).
Taper rod and gripper are pushed back towards thecenter by scraper when unclamping.

Taper rod

Allowable eccentricity ±0.5mm

Clamping hole

Allowable eccentricity ±0.5mm

Gripper
Sliding

Air expansion clamp

Scraper

By the eccentric mechanism, the expansion clamp does not have a workpiece positioning function.

Incorporating strong air blowing circuit

CGE

Air blow from a gap between the gripper and scraper clears off metal chips and coolant that stay on the seating
surface. Flushing channel is also provided on the seating surface to remove the metal chips and coolants smoothly
during workpiece setting.

GripperFlushingchannelScraper

Seatingsurface

Air blow

Unclamping
air pressure

To download CAD data / To get updated information, visit www.pascaleng.co.jp

95CGE- N22E□

Air expansion clamp

Doubleactingａｉｒ

Sensor nozzle detects faulty seating of workpiece

If clamping operation is made when metal chips are under the workpiece (Figure 1-a), or when the workpiece is set
1.2mm and over above the seating surface due to its distortion (Figure 1-b), the workpiece cannot sit fully on thesurface and air is exhausted from the sensor nozzle. Incomplete workpiece seating is detected.

Faulty setting ofworkpiece

Metal chips caught
by clamp

Seating surface
Metal chip
Workpiece set
ﬂoating1.2 mm
and over above
seating surface

Sensor nozzle

Air expansion clamp

Sensor nozzle

Figure 1-a

Figure 1-b

Faulty seating of workpiece

Seating completion of workpiece

Sensor air is exhausted from sensor nozzle.
Air sensor is not triggered and faulty
seating of workpiece is detected.

Sensor nozzle is blocked by the workpiece.
Air sensor detects the seating completionof workpiece.

CGE

Sensor nozzle

ExhaustClamping
air pressure

Clamping
air pressure

Unclamping
air pressure

96

Sensor nozzle

Unclamping
air pressure

Sensor air

Clamp condition

Sensor nozzle

Faulty seating ofworkpiece

Open

Air sensor signal

Air pressure switch

Air sensor OFF

Clamping
air pressure ON(Sensor air flows.)

Sensor air

CGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingIncomplete clamping sensor valve detects incomplete clamping
PAT. JP4297511
US8246029
EP2253419

When gripper fails to grip properly due to large draft angle of grip inner diameter (Figure 2-a), incomplete clamping
sensor valve is opened. Sensor air is exhausted and this detects incomplete clamping.
When clamping hole exceeds tolerance value (Figure 2-b), or when gripper is broken (Figure 2-c), incomplete clamping
is detected as well.
Clamping hole is large(Full stroke)

Slipping ofgripper

If gripper is broken

FullstrokeFigure 2-b

Figure 2-c

Incomplete clamping

Clamping completion

Incomplete clamping sensor valve is opened
by piston Ⓐ, sensor air is exhausted. Air
sensor is not triggered and this detects
incomplete clamping.

Incomplete clamping sensor valve remains
closed. Air sensor detects normal clamping
completion.

Incomplete clamping
sensor valve

Incomplete clamping
sensor valve
Piston Ⓐ

Piston Ⓐ

Clamping
air pressure

Exhaust(Air blow circuit)

Air expansion clamp

Figure 2-aFullstrokeCGE

Large draft angle ofgrip inner diameter

Clamping
air pressure

Unclamping
air pressure

Unclamping
air pressure

Sensor air

Clamp condition

Incomplete clamping
sensor valve

Incomplete
clamping

Open

Air sensor signal

Air pressure switch

Air sensor OFF

Clamping
air pressure ON(Sensor air flows.)

To download CAD data / To get updated information, visit www.pascaleng.co.jp

Sensor air

97

CGE- N22E□

Air expansion clamp

Doubleactingａｉｒ

Unclamping sensor valve detects unclamping operation is complete

Unclamping sensor valve enables sensor to detect unclamping completion. The valve opens to exhaust sensor air evenwhen the workpiece blocks the sensor nozzle.

Unclamping completion

Clamping completion

Unclamping sensor valve is opened by pistonⒷ and sensor air is exhausted. Air sensor is not
triggered and this detects unclamping
completion.

Unclamping sensor valve is closed byclamping air pressure. Air sensor detects
normal clamping completion.

Unclamping
sensor valve

Unclamping
sensor valve

CGE

Air expansion clamp

Sensor nozzle

Clamping
air pressure

Piston Ⓑ

Exhaust(Air blow circuit)98

Unclamping
air pressure

Unclamping
air pressure

Sensor air

Clamp condition

Unclamping sensor valve

Unclamping
completion

Open

Clamping
completion

Close

Air sensor signal

Air pressure switch

Air sensor OFF

Unclamping
air pressure ON(Sensor air flows.)

Air sensor ON(Sensor air does not flow.)

Clamping
air pressure ON

Sensor air

CGE- N22E□

Air expansion clamp

Unclamping completion

Doubleactingａｉｒ

Clamping completion

Sensor nozzle

Unclamping
sensor valve

Unclamping
sensor valve

Clamping
air pressure

Piston Ⓑ

Unclamping
air pressure

Sensor air

Unclamping
air pressure

Clamp condition

Sensor nozzle

Incomplete
clamping
sensor valve

Unclamping
sensor valve

Unclamping
completion

Close

Close

Open

Clamping
completion

Close

Close

Close

Air sensor signal

Air sensor OFF(Sensor air flows.)

Air sensor ON(Sensor air does not flow.)

Faulty seating of workpiece

Sensor air

Air pressure switch
Unclamping
air pressureON

Clamping
air pressureON

Air expansion clamp

Exhaust(Air blow circuit)

Incomplete clamping

CGE

Sensor nozzle

ExhaustIncomplete clamping
sensor valve
Piston Ⓐ

Clamping
air pressure

Clamping
air pressure

Unclamping
air pressure

Sensor air

Exhaust(Air blow circuit)

Clamp condition

Sensor nozzle

Incomplete
clamping
sensor valve

Unclamping
sensor valve

Faulty seating ofworkpiece

Open

Close

Incomplete
clamping

Close

Open

Unclamping
air pressure

Sensor air

Air sensor signal

Air pressure switch

Close

Air sensor OFF

Clamping
air pressure ON

Close

Air sensor OFF(Sensor air flows.)(Sensor air flows.)

Clamping
air pressure ON

To download CAD data / To get updated information, visit www.pascaleng.co.jp99CGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingNon-constant air blow model considerably reduces air consumption
PAT. JP5674191
US8800982
EP2543468

The newly developed non-constant air blow model has no open

2 Grippers, 3 Grippers

space between a scraper, a gripper and a rod thereby no air blow

Non-constant air blow model

during machining is required to prevent chips intrusion.

Open space where metal
chips can intrude is removed
during clamping.

The air blow model (See picture on the right), which requires constant air blow during machining, used to consume constantly 50 L/
min (0.3MPa) of air for 12mm of grip inner diameter, however, the4 Grippers (Old model)

new model requires air blow only when the clamp is in clamp andAir blow model

unclamp action, and when workpiece replacement.

Open space where metal
chips can intrude is createdduring clamping.

This enables significant reduction of air consumption, which helps
promote energy conservation.

Non-constant air blow model

Grip inner diameterø 7.0 7.3 7.6 7.9 8.2
2 Grippers

ø 8.5

9

10

Clamping force

0.81 kN(Air pressure 0.5MPa)

Model

CGE-N22E Grip inner diameter

CGE

Air expansion clamp

Number of grippers

Number of grippers

3 Grippers

100

Grip inner diameter

ø 11

12

13

Clamping force

0.81 kN(Air pressure 0.5MPa)

Model

CGE-N22E Grip inner diameterCGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingSpace where metal chips can intrude is created (Old model)

Rod

GripperSpace
Scraper

A

B

A
Rod
4 Grippers

Scraper
B

B-B

A-A

When clamping

Because of space between scraper, gripper and the rod, air blow must always be performed to prevent intrusion of chips.

Secure chip protection

B

Gripper

Scraper

Scraper

Air expansion clamp

Rod

Pages →102‒105
AA
Rod
2 Grippers
B

Scraper

B-B

A-A

CGE

When clamping

Because there is no space between scraper, gripper and the rod, it is not necessary to perform air blow during cutting process.

Rod

Scraper

Gripper

B
A

Scraper

B

Pages →106, 107ARod
3 Grippers
Scraper
When clamping

A-A

B-B

Because there is no space between scraper, gripper and the rod, it is not necessary to perform air blow during cutting process.

To download CAD data / To get updated information, visit www.pascaleng.co.jp101CGE- N22E□

Air expansion clamp

Non-constant air blow model

Doubleactingａｉｒ

Dimensions
Seating surface
outer diameter øU
Seating surface
inner diameter øT
E1

60°

45

A

55.6

E2

5
ø7
Sensor nozzle ø1

A

A-A

45

Details

66

Rod outer diameter
øF4
øAD
R0.6

30°

48

30°

4 (5°tapering)
67.5

R5

4-ø9.554-ø5.519.5

4.5

Grip inner diameter usage requirements

O-ring AS568-032
ø52.5

3- O-ring P4

Min. 4Air expansion clamp
Non-constant air blow model

Clamp removal thread
4-M6×1 thread through40±0.0050øS -0.1

12

2

4

8

Gripper outer diameterøF3-0.030Min. 8.5

CGEø53 f 7 -0.060

Blind hole

Clamping air port

28.5

28.5

mm

Blow air supply port
(Sensor air exhaust port)

Model

CGE-N22E□
076

079

082

E1

7.6

7.7

7.8

7.9

8.1

E2

3.8

3.8

3.8

3.9

4

ø F3

6.5

6.8

7.1

7.4

7.7

ø F4

6.55

6.85

7.15

7.45

7.75

øS

20.5

20.6

20.9

21.2

21.5

øT

10.6

10.9

11.2

11.5

11.8

● Material used for O-ring is fluorocarbon (Hardness Hs90).

øU

20

20.1

20.4

20.7

21

● Seating surface hardness is HRC55.

ø AD

5.4

5.7

6

6.3

6.6

14

14

073

14

070

Sensor air supply port

● Mounting screws are not included.

● The above diagram indicates unclamped condition.

102

Through hole

● CGE-N22E070, 073, 076, 079, 082 are made to order.

CGE- N22E□

Air expansion clamp

Non-constant air blow model

ａｉｒDoubleactingMounting details

28.5

28.5
Sensor air supply port

14

14

45

14

3-Max.ø2.5

Blow air supply port
(Sensor air exhaust port)

4-M5
Clamping air port

1
6.3

Rz

Min. 20

Rz6.3

Rz6.3

+0.0460

R0.4
Unclamping air portside face processing range

(ø3)
ø52.8

+0.2
0

Unclamping air port

Air expansion clamp
Non-constant air blow modelø53 H830°(H8 range)
Min.1045

CGE

Unclamping air portbottom face processing range
Rz: ISO4287(1997)：Unclamping air port must be made on either side or bottom face.

● Apply an appropriate amount of grease to the chamfer and the bore when mounting.
Excessive grease may be a blockage in the air passage, causing malfunction of the sensor.
● The 30°taper machining must be provided to avoid the damage of the O-ring.

To download CAD data / To get updated information, visit www.pascaleng.co.jp103CGE- N22E□

Air expansion clamp

Non-constant air blow model

ａｉｒDoubleactingDimensions
Seating surface
outer diameter øU
Seating surface
inner diameter øT
E1

60
°

45

A

55.6

E2

5
ø7
Sensor nozzle ø1

A

A-A
45

Details

66

Rod outer diameter
øF4
øAD

R1

9

30°

49

5 (5°tapering)

68.5

30°

40±0.005

R5

4-ø9.554-ø5.519.5

4.5

Grip inner diameter usage requirements

O-ring AS568-032
ø52.5

3- O-ring P4-0.030Min. 9.5

CGEø53 f 7 -0.060

Min. 5Air expansion clamp
Non-constant air blow model

Clamp removal thread
4-M6×1 thread through120

øS -0.1

2

5

Gripper outer diameterøF3

Blind hole

Clamping air port

28.5

28.5

mm

Blow air supply port
(Sensor air exhaust port)

10

E1

8.5

8.5

9

E2

4.2

4.2

4.4

ø F3

8

8.5

9.5

ø F4

8.05

8.55

9.55

øS

22.5

22.5

23.5

øT

12.1

12.6

13.6

● Material used for O-ring is fluorocarbon (Hardness Hs90).

øU

22

22

23

● Seating surface hardness is HRC55.

ø AD

6.3

6.8

7.8

14

09

14

CGE-N22E□
085

14

Model

Sensor air supply port

● Mounting screws are not included.

● The above diagram indicates unclamped condition.

104

Through hole

● CGE-N22E085, 09, 10 are made to order.

CGE- N22E□

Air expansion clamp

Non-constant air blow model

ａｉｒDoubleactingMounting details

28.5

28.5
Sensor air supply port

14

14

45

14

3-Max.ø2.5

Clamping air port

4-M5

Blow air supply port
(Sensor air exhaust port)

1
6.3

Rz

Min. 20

Rz6.3

Rz6.3

+0.0460

R0.4
Unclamping air portside face processing range

(ø3)
ø52.8

+0.2
0

Unclamping air port

Air expansion clamp
Non-constant air blow modelø53 H830°(H8 range)
Min.1045

CGE

Unclamping air portbottom face processing range
Rz: ISO4287(1997)：Unclamping air port must be made on either side or bottom face.

● Apply an appropriate amount of grease to the chamfer and the bore when mounting.
Excessive grease may be a blockage in the air passage, causing malfunction of the sensor.
● The 30°taper machining must be provided to avoid the damage of the O-ring.

To download CAD data / To get updated information, visit www.pascaleng.co.jp

105CGE- N22E□

Air expansion clamp

Non-constant air blow model

ａｉｒDoubleactingDimensions
Seating surface
outer diameter øU
Seating surface
inner diameter øT
E1

E2

5
ø7
Sensor nozzle ø1

60
°

45

55.6

A
A

A-A
45
66

Details
Rod outer diameter
øF4
øAD

R1

10

30°

5.6
2
50
69.5

40±0.005

30°

4-ø9.5

Gripper outer diameterøF35 (5°tapering)

5

4-ø5.519.5

4.5

Grip inner diameter usage requirements

O-ring AS568-032
ø52.5

3- O-ring P4-0.030Min. 10.5

CGEø53 f 7 -0.060

Min. 5.6

Air expansion clamp
Non-constant air blow model

Clamp removal thread
4-M6×1 thread through

R5

12

0

øS -0.1

Blind hole

Clamping air port

28.5

28.5

mm

Blow air supply port
(Sensor air exhaust port)

13

E1

9.4

9.9

10.3

E2

4.6

4.8

5.1

ø F3

10.5

11.5

12.5

ø F4

10.55

11.55

12.55

øS

24.5

25.5

26.5

øT

14.6

15.6

16.6

● Material used for O-ring is fluorocarbon (Hardness Hs90).

øU

24

25

26

● Seating surface hardness is HRC55.

ø AD

8.2

9.2

10.2

14

12

14

CGE-N22E□
11

14

Model

Sensor air supply port

● Mounting screws are not included.

● The above diagram indicates unclamped condition.

106

Through hole

● CGE-N22E11, 12, 13 are made to order.

CGE- N22E□

Air expansion clamp

Non-constant air blow model

ａｉｒDoubleactingMounting details

28.5

28.5
Sensor air supply port

14

14

45

14

3-Max.ø2.5

Blow air supply port
(Sensor air exhaust port)

4-M5

Clamping air port

1
6.3

Rz

Min. 20

Rz6.3

Rz6.3

+0.0460

R0.4
Unclamping air portside face processing range

(ø3)
ø52.8

+0.2
0

Unclamping air port

Air expansion clamp
Non-constant air blow modelø53 H830°(H8 range)
Min.1045

CGE

Unclamping air portbottom face processing range
Rz: ISO4287(1997)：Unclamping air port must be made on either side or bottom face.

● Apply an appropriate amount of grease to the chamfer and the bore when mounting.
Excessive grease may be a blockage in the air passage, causing malfunction of the sensor.
● The 30°taper machining must be provided to avoid the damage of the O-ring.

To download CAD data / To get updated information, visit www.pascaleng.co.jp107CGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingGripper set replacement

Number of grippers

Gripper set model

Clamp model

CGE-N22EJ070

CGE-N22E070

CGE-N22EJ073

CGE-N22E073

CGE-N22EJ076

CGE-N22E076

CGE-N22EJ079

CGE-N22E079

CGE-N22EJ082

CGE-N22E082

CGE-N22EJ085

CGE-N22E085

CGE-N22EJ09

CGE-N22E09

CGE-N22EJ10

CGE-N22E10

CGE-N22EJ11

CGE-N22E11

CGE-N22EJ12

CGE-N22E12

CGE-N22EJ13

CGE-N22E13

Set description

Scraper × 1

Gripper(Refer to table left)

O-ring × 1

2 Grippers

It is recommended that grippers, scraper andO-ring be replaced after about 200,000 oper-

Air expansion clamp

ations. Replace grippers in sets and not just an
3 Grippers

individual gripper. (Refer to the table on theleft for the gripper set model.)CGE

Grip inner diameter & rod height when clamping

Rod height10

Rod height (mm)

9

ø1 1

8

‒ø1

3

ø8.5

7

‒ø1

0

Rod height calculation formula
ø7‒

ø8.

6

ø7

2

grip inner diameter and‒ ø8.2：6.58-2.84× Actual
nominal grip diameter difference

grip inner diameter andø8.5 ‒ ø10 ：7.82-2.35× Actual
nominal grip diameter difference
5
-0.3

-0.2

Allowable min.
grip inner diameter

-0.1

0

0.1

Nominalgrip inner diameter

0.2

0.3

0.4

0.5

ø7‒ø8.2
Allowable max.
grip inner diameter

0.6

Allowable max.
grip inner diameterDiﬀerence between actual grip inner diameterand nominal grip diameter (mm)

108

0.7

grip inner diameter andø11 ‒ ø13 ：8.82-2.35× Actual
nominal grip diameter difference

Example：When CGE-N22E10 (Nominal grip diameter : ø10)is clamping ø9.8 hole
Rod height = 7.82 - 2.35×(-0.2) = 8.29mm

CGE- N22E□

Air expansion clamp

ａｉｒ

Doubleacting

System configuration example

Workpiece positioning pin(Round) 2

Expansion clamp
model CGE

Workpiece
guide 1

Workpiece guide

Expansion clamp
model CGE

Workpiece positioning pin(Diamond) 2

1

Expansion clamp
model CGE

Workpiece positioning pin(Round) 2

Workpiece guide1

Air expansion clamp

model CGE

10mm and overExpansion clamp

Grip inner diameter D

Rod outer
diameter dExpansion clamp
model CGE

Workpiece positioning pin(Diamond) 2

CGE

Diametral space
D-d and under

Expansion clamp
model CGE

1: When using automatic or robotic conveyers, prevent damage to clamp caused from
impact by setting workpiece guides. Using the above guide as reference, accurately
position the holes when using workpiece guides.
2: The expansion clamp does not have a workpiece positioning function.
Install workpiece positioning pins (or similar).

To download CAD data / To get updated information, visit www.pascaleng.co.jp

109CGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingPneumatic circuit diagram

P.S. 1Ⓒ

Air sensor unit

(The circuit diagram is subject to change according to the model of sensor.)

5μm

5μm
Clamping
air pressure

Sensor air
0.2MPa(Recommended air pressure)

P.S. 2Ⓐ Solenoid valve
5μm

Unclamping
air pressureⒷ Speed controller

Air blow((Meter-out control)

Exhaustwhen OFF)

0.3MPa(Recommended air pressure)● Air blow will not be necessary during cutting process. Be sure to air blow upon loading and unloading workpiece
and when clamping and unclamping to remove metal chips and debris.
● The solenoid valve Ⓐ must be closed when checking the operation of the clamp with the air sensor. Also 3
exhausted and misclamp detection function is disabled.

Air blowing

Incomplete clamping

CGE

Air expansion clamp

port type of solenoid valve must be used in the circuit. If 2 port type of the valve is used, sensing air cannot be

Clamping
air pressure

Solenoid valve of

Solenoid valve ofⒶ air blow circuitⒶ air blow circuit

Unclamping
air pressure

Unclamping
air pressureON
Air blow

110

OFFExhaust(Sensor air)Sensor air

CGE- N22E□

Air expansion clamp

ａｉｒ

Doubleacting● Operation speed must be adjusted by a meter-out type speed controller Ⓑ being provided in the unclamping
circuit. By the adjustment, air flow in unclamping circuit is squeezed and back pressure is generated. The backpressure acts on the piston Ⓐ of the clamp and makes the gripper expand first then the taper rod strokes down
to clamp. If meter-in type speed controller is installed in the circuit, it dumps the air rapidly and makes the gripper move very quick which causes incomplete clamping.
● Adjust air flow when clamping to have the taper rod full stroke in 0.3 sec or over.
Excessive air flow to the clamp gives impact load and may cause breakage of the parts.

Clamping hole

Taper rod

Workpiece

Gripper

PistonⒶ

SleeveClamping air pressure

Air expansion clamp

PistonⒷ

Unclamping air pressure

CGE

Unclamping air pressure circuitⒷ Speed controller

Air sensor unit Ⓒ recommended condition of use

ISA3-F/G series
manufactured by SMC

Supplier andmodel

GPS2-05 , GPS3-E series
manufactured by CKD

Air supply
pressure

0.2 MPa

Inner diameterof pipingø4 mm (ISA3-F：ø2.5 mm)

Overall piping
length5 m or less

● Use a solenoid valve with needle for air sensor
unit Ⓒ and control it supplying air all the time inorder to eliminate intrusion of chips or coolant.
● There is a case that air sensing cannot be madesuccessfully as designed when it is used out of
the usage shown on the left. Contact Technicalservice center for more details.

To download CAD data / To get updated information, visit www.pascaleng.co.jp111CGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingOperation cycle
The clamp should be controlled with the cycle in the diagram shown below to detect the operation status exactly.

Workpiece

Stateloading

Clamping

Air blow

ClampingOFF

completion 1(Machining)

Air blowON

Unclamping

Air blow

Unclamping

Air blow

Workpiece

OFF

completion 2

ONunloading

Workpiece Clamp
clamp

UnclampON

4

Air blowOFFON
Sensor air
OFF5

Clamping air pressure
P.S. 1

OFF

ON

OFF

Unclamping air pressure
P.S. 2

ON

OFF

ON

ON or OFF 3

CGE

Air expansion clamp

Air sensor

112

1 : Clamping completion: P.S. 1＝ON

P.S. 2＝OFF

Air sensor＝ON

2 : Unclamping completion : P.S. 1＝OFF

P.S. 2＝ON

Air sensor＝OFF

3 : ON : Complete clamping

OFF : Incomplete clamping

4 : Solenoid valve control

5 : Air pressure switch, Air sensor signal

OFFCGE- N22E□

Air expansion clamp

ａｉｒ

DoubleactingCaution in use● Be sure to make inner diameter of air blow circuit 4 mm
and over except for clamp mounting surface.

● Perform unclamping completion detection, clamping completion detection and incomplete clamping detection withcombination actions of pressure switch and sensor shown● Set the workpiece in such a way that the clamping hole ofworkpiece is perpendicular to seating surface. Clamping inin table below. (Refer to the pneumatic circuit diagram on
page →110 for details.)

tilted condition results in uneven contact of gripper withhole, which leads to concentration of load that may cause

Applications

Pressureswitch 1(P.S. 1)Pressureswitch 2(P.S. 2)Air sensor

Unclamping
completion detection

OFF

ON

OFF

Clamping
completion detection

ON

OFF

ON

Incomplete
clamping detection

ON

OFF

OFF

damage.

● Verify that there are no metal chips or debris on seating
surface of clamping hole and clamp body before setting
workpiece. Allowing intrusion of metal chips results in insecure clamping, which can lead to low grade of machining
accuracy.

● Flaring (Biting) of gripper into workpiece varies depending
on workpiece material or thermal processing conditions.
With regards to conditions of workpiece and clamping hole,refer to page →91. Secure clamping is not possible when
Air expansion clamp

workpiece or clamping hole that does not satisfy these
conditions is used.

● If clamping hole serves as taper hole (cast draft hole withgradient), then perform test clamping using applicable
workpiece beforehand to verify that there are no problems

CGE

with operations.

● Deformation may occur if the thickness of clamping holesection of workpiece is extremely thin. Use applicable
workpiece to perform test clamping beforehand to verify
that there are no deformations in thin portion.

● Supply the dry and filtered air. Particulate size 5μm or lessis recommended.

● Measure seating surface flatness with air pressure appliedon clamping side, or by applying air pressure on neither
clamping nor unclamping side.

● Set detection range of air sensor to 0.05 mm and underfrom seating surface. Insert a feeler gauge between workpiece and seating surface to create detection distance inorder to perform setting accurately. Refer to instruction
manual of air sensor for details on setting methods.

To download CAD data / To get updated information, visit www.pascaleng.co.jp

113