Rotation adjusting mechanism and adjusting machine using the same

A rotation adjusting mechanism includes a first pedestal, a first sliding block and a first adjusting member. The first pedestal defines a first sliding surface, and an adjusting hole at the side, and an elongated hole on the first sliding surface, the elongated hole communicates with the adjusting hole. The first sliding block defines a second sliding surface and includes an engaging portion on the second sliding surface, the second sliding surface moves on the first sliding surface. The first adjusting member is partially received in the adjusting hole, a portion of the first adjusting member is partially exposed out of the elongated hole and engages with the engaging portion, the adjusting member is turned by hand to rotate to enable the first sliding block to slide along the first sliding surface. The embodiment further discloses an adjusting machine using the same.

BACKGROUND

1. Technical Field

The present disclosure relates to rotation adjusting mechanisms, and more particularly, to a rotation adjusting mechanism used for rotating reflective mirror and an adjusting machine using the rotation adjusting mechanism.

2. Description of Related Art

In the assembling process, a rotation adjusting mechanism is employed to position workpieces. A typical rotation adjusting mechanism includes a rotation member, a pivotal shaft and a clamping member. The pivotal shaft rotatably extends through a middle portion of the rotation member, the clamping member is fixed to an end of the rotation member. When in use, the clamping member clamps a workpiece, the rotation member is rotated and the clamping member is driven to move to position the workpiece. However, the positioning accuracy of the rotation adjusting mechanism is less than optimal.

Therefore, there is room for improvement in the art.

DETAILED DESCRIPTION

Referring toFIGS. 1 and 2, an embodiment of an adjusting machine100includes a base seat10, a linearity adjusting mechanism20, a rotation adjusting mechanism30and a clamping mechanism40. The linearity adjusting mechanism20is slidably mounted on the base seat10, the rotation adjusting mechanism30is slidably mounted on the linearity adjusting mechanism20. The clamping mechanism40is mounted on the rotation adjusting mechanism30and capable of being rotated around a first axis A and a second axis B, to position a workpiece220on an electronic device200. The first axis A and the second axis B are perpendicular to each other and intersect with each other. In the illustrated embodiment, the electronic device200is a micro-projector, and the workpiece220is a reflecting mirror.

The base seat10includes a bottom plate11and a feeding table13located at a side of the bottom plate11.

Also referring toFIG. 3, the linearity adjusting mechanism20includes a first guiding rail21, a first sliding member23, a positioning member25, a second guiding rail27, a second sliding member28and an adjusting member29. The first guiding rail21is fixed to the bottom plate11adjacent to the feeding table13. The first sliding member23is slidably mounted on the first guiding rail21. A part of the positioning member25passes through the first sliding member23, and is capable of being drawn down on the bottom plate11, to securely fix the first sliding member23in place. The second guiding rail27is fixed to the first sliding member23, and the second sliding member28is slidably mounted on the second guiding rail27. The adjusting member29is mounted on the second guiding rail27and resists on the second sliding member28to adjust the sliding distance of the second sliding member28.

The rotation adjusting mechanism30is fixed to the second sliding member28, and includes a fixing block31, a first rotation assembly33and a second rotation assembly35parallel to the first rotation assembly33. The fixing block31and the second rotation assembly35are fixed to opposite sides of the first rotation assembly33.

Also referring toFIGS. 4 and 5, the first rotation assembly33includes a first pedestal331, a first sliding block333, a first adjusting member335and a first latching member337. The first pedestal331includes a main body3311and a first sliding portion3313formed on the main body3311. The main body3311defines a fixing surface3315and a first engaging surface3316at two sides thereof, respectively. The fixing surface3315is planar and fixed to the fixing block31. The first engaging surface3316is smoothly concave and follows the circumference of a cylinder based on the first axis A. The first sliding portion3313is located at a middle portion of the main body3311and protrudes out from the first engaging surface3316. The first sliding portion3313defines a first sliding surface3317thereon substantially parallel to the first engaging surface3316. The distance between a terminal end of a contour line of the first sliding surface3317to the fixing surface3315is equal to the distance between an opposite terminal end of the contour line of the first sliding surface3317to the fixing surface3315. The first pedestal331defines an adjusting hole3318on a side surface of the main body3311away from the second sliding member28. An axis of the adjusting hole3318can be parallel to the fixing surface3315, and the movement of the axis of the adjusting hole3318resembles a tangent of a circle moving around the circumference of a circle. The first pedestal331further defines a slot3319(elongated hole) communicating with the adjusting hole3318on the middle of the first engaging surface3316.

The first sliding block333includes a base body3331and a pair of second sliding portions3333. The base body3331defines a second sliding surface3335thereon, and the pair of second sliding portions3333protrudes out from opposite edges of the second sliding surface3335. The base body3331further includes an engaging portion3337on a middle portion of second sliding surface3335. The shape of the second sliding surface3335is convex and matches that of the first sliding surface3317. The engaging portion3337is a strip parallel to the pair of second sliding portions3333. The engaging portion3337includes a plurality of screw teeth (not labeled) arranged along a length thereof, the plurality of screw teeth are parallel to each other. Each second sliding portion3333defines a second engaging surface3338corresponding to the first engaging surface3316, one second sliding portion3333defines a locking hole3339on a side surface thereof. The shape of the second engaging surface3338is convex to correspond to that of the second sliding surface3335. The locking hole3339extends through the second sliding portion3333, and an axis thereof is perpendicular to the axis of the adjusting hole3318.

The first adjusting member335is partially received in the adjusting hole3318of the first pedestal331. The first adjusting member335includes an adjusting portion3351and an operation portion3353connected to an end of the adjusting portion3351. The adjusting portion3351is received in the adjusting hole3318and engages with the first pedestal331. The adjusting portion3351is partially exposed out of the elongated hole3319and engages with the engaging portion3337of the first sliding block333. The first adjusting member335is capable of driving the first sliding block333to slide along the first sliding surface3317. In the embodiment, the first adjusting member335is a bolt.

The first latching member337is partially received in and engages with the locking hole3339of the first sliding block333. An end of the first latching member337extends out of the locking hole3339and resists on the first sliding portion3313to position the first sliding block333on the first sliding pedestal331.

The second rotation assembly35is the same as the first rotation assembly33, and includes a second pedestal351, a second sliding block353, a second adjusting member355and a second latching member357. The second sliding block353slidably engages with the second pedestal351, the second adjusting member355is capable of driving the second sliding block353to slide relative to the second pedestal351. The second latching member357is capable of resisting on the second pedestal351to position the second sliding block353on the second sliding pedestal351. The second adjusting member355is perpendicular to the first adjusting member335. The second latching member357is perpendicular to the first latching member337. The second rotation assembly35is capable of driving the clamping assembly40to rotate around the second axis B.

Referring toFIGS. 2 and 3again, the clamping mechanism40is fixed to the second sliding block353and includes a fixing plate41, a guiding assembly43, a pair of clamping assemblies45and a resisting assembly47. The fixing plate41is fixed to the second sliding block353. The guiding assembly43includes a plurality of guiding rods433and a plurality of resilient members435sleeved on the guiding rods433. The pair of clamping assemblies45is movably mounted on the guiding rods433and urged by the plurality of resilient members435to move towards each other. Each clamping assembly45includes a sliding block451slidably sleeved on the guiding rods433, and a clamping member453fixed to the sliding block451. The clamping member453includes a clamping portion4533away from the sliding block451. The resisting assembly47is roatably mounted on the fixing plate41and capable of driving the pair of clamping assemblies45to move away from each other.

The resisting assembly47includes a pair of rotation members471, a resist member473and a knob475. The pair of rotation members471is fixed on the fixing plate41and spaced from each other. The resist member473is rotatably mounted on the pair of rotation members471, the knob475is mounted on an end of the resist member473. The resist member473includes a resist portion (not labeled) between the pair of sliding blocks451.

Also referring toFIGS. 1 through 6, in assembly, the feeding table13is fixed to the bottom plate11. The first guiding rail21, the first sliding member23, the positioning member25, the second guiding rail27, the second sliding member28and the adjusting member29are mounted in turn. The fixing block31is fixed to the second sliding member28, the first pedestal331is fixed to the fixing block31. The first sliding member23slidably engages with the first pedestal331, the first adjusting member335and the first latching member337are mounted to the first pedestal331and the first sliding member23respectively. The second rotation assembly35is fixed to the first sliding block333. The fixing plate41is fixed to the second sliding block353. The guiding assembly43and the pair of clamping assembly45are mounted on the fixing plate41. The pair of resisting assemblies47is rotatably mounted between the pair of clamping assemblies45to complete the assembling of the adjusting machine100.

In use, the electronic device200is placed upon the feeding table13, the knob475is turned by hand and drives the resist member473to rotate. The resist member473drives the pair of clamping members453to move away from each other. The workpiece220is received between the pair of clamping members453and the resist member473rotates again to release the plurality of resilient members435, thus the workpiece220is clamped. The pair of clamping members453drives the workpiece220to move longitudinally along the first guiding rail21via the linearity adjusting mechanism20. The first adjusting member335engages with the engaging portion3337to enable the first sliding block335to slide relative to the first pedestal331, thus the workpiece220is rotated around the second axis A. The second adjusting member355drives the second sliding block355to slide relative to the second pedestal351, thus the workpiece220is rotated around the second axis B. The workpiece220is aligned to the electronic device200via incremental motions around the first axis A and the second axis B, the clamping members453place the workpiece220on the electronic device200to finish the adjusting of the workpiece220.

The first sliding block333is capable of rotating around a first axis A relative to the first pedestal331, and the second sliding block353is capable of rotating around a second axis B relative to the second pedestal351, thus greatly improving the adjusting accuracy of the rotation adjusting mechanism30and the presentation of the workpiece220. As the first rotation assembly33and the second rotation assembly35are connected to each other as in a laminar manner, thus a volume of the rotation adjusting mechanism30decreases. The clamping process of the workpiece220merely requires rotation of the resisting member473, thus operation of the clamping mechanism40is much easier.

When the second rotation assembly35is attached to the first rotation assembly37at an angle, the rotation adjusting mechanism30is capable of rotating around a different axis.

When the contour lines of the first engaging surface3316, the first sliding surface3317, the second engaging surface3338and the second sliding surface3335are reformed, the position of the first axis A may be changed. When the structure of the second rotation assembly35is reformed, the position of the second axis B may be changed.