Patent GB-1093161-A (GB)
Title: Improvements in or relating to machine systems enlargeable according to the principle of unit construction
IPC: B27M1/08
Filed: 1965-01-13
Abstract: 1,093,161. Grinding; machine tool details. JONSEREDS FABRIKERS A.B. Jan. 13, 1965 [Oct. 24, 1964], No. 1475/65. Headings B3B, B3D and B3K. [Also in Division B5] A working machine system comprises at least one working unit 1, Fig. 1, for performing machinery operations, such as sawing, milling, polishing, buffing, grinding, surface coating, painting or brushing, upon workpieces and at least one operating unit 2a, 2b for feeding workpieces to or discharging them from the working unit, the units having frame means supporting power driven means, and operating means driven by the power-driven means and mutually identical input and output sides so that they may be assembled one with the other like the elements of a construction set into large and small working machines or machine systems including various numbers of units. As described, the machine system effects the sawing of boards. The operating unit 1, Figs. 1 and 3, consists of a pair of side frames 10 which are interconnected by tubes 11 and are adapted to be connected by bolts to the similar frames of the operating units. The lower tubes 11 support a plurality of holders 25, each of which has an upright 32 on which a slide 31 carrying a saw 14a, 14b is vertically adjustable, the saws 14a serving to divide the boards longitudinally and the saws 14b acting to trim the edges of the boards. The vertical adjustment of each slide 31 is effected by a vertical spindle 40, Fig. 5, which is in threaded engagement with a nut in the slide and at its lower end has a bevel gear 26 meshing with a bevel gear 35 on a shaft 38 common to each saw unit, the gear 35 being keyed to the shaft but axially movable from engagement with the gear 36 by rotation of a spindle 51 having at one end a lever 52 with a pin 53 engaging a groove 54 in the gear and at the other end a lever 50 connected to the rod of a piston and cylinder device 37. Each device 37 is controlled by a separate valve whereby the engagement of the gears 35, 36 is controlled so that the saws can be adjusted in the vertical direction singly or together upon rotation of the shaft 38. Each saw unit also has a half nut 28, Fig. 1, which is movable about a pivot into or out of engagement with a threaded spindle 26 by a piston and cylinder device 29 whereby the units are movable along the rods 11 singly or together upon rotation of the spindle 26 by a servomotor 23, Fig. 3, or hand wheel 32. Each saw is driven from a motor 15a, 15b by means of belt-drives 16. The operating units 2a, 2b are substantially identical and each includes a pair of end frames 10, interconnected by three tubes 11. Each unit has a pair of shafts 70 having rollers 71 for feeding work to, or discharging it from, the working unit 1, the shafts in the unit 2a being connected by a drive chain 75 to a gear 76 on a motor 77 on a bracket 78 mounted on one of the lower tubes 11. The motor is also connected by a chain 79 to the gear 76 on the unit 2b whereby the rollers 71 of both units are driven synchronously. Instead of the rollers 71, the units may have equivalent devices such as belt, band or chain conveyers. The rollers 71 on the two shafts 70 are staggered and the boards are pressed against the rollers by pressure rollers 81 which are mounted with a castering action on pivots 86 on the ends of arms 82 that extend over the upper tube 11 and are alternately connected to rods 80. The pressure may be adjusted by shafts 90 having screw sections 92a, 92b. The rods 80 are also vertically adjustable on the inner walls of the frames 10. The system may comprise two assemblies having a working unit between two operating units and being connected by a conveyer to the assembly which has a working unit and an operating unit. The unit in assembly has two trimming saws and a dividing saw for operating on workpieces. The unit in assembly also has a pair of cross-cut saws supported by an assembly having a motor for reciprocating movement along a pair of beams. The beams have stationary endless chains 115, Fig. 10, which are engaged by sprocket wheels 113 on the carriage 112 supporting the motor 15c and saws 110. A horizontal guide is located between the upper and lower runs of the chain 115 so that when a motor 111 rotates the sprocket wheels 113 to move the carriage, the wheels engage the lower run of the chain during a forward cutting stroke, run around the curved connecting part 115<SP>1</SP> and then are supported by the guides 118 to engage the upper run of the sprocket so that the carriage is then tipped to an inoperative position, shown dotted, during its return movement. The unit 1 of the assembly B may have a single cross-cut saw. The operation of the units may be controlled by abutments and limit switches, photo-cells or an electrical control system. The system may be arranged to make imitation tile boards and consists of an assembly having a working unit 1, Fig. 9, between operating units 2a, 2b, the unit having a plurality of milling cutters 14d for cutting longitudinal grooves on the boards 102 and may also have saws, such as 14b, Fig. 3, for edging the boards and cross-cutting saws, such as 14c, Fig. 6. The grooved boards then pass to a conveyer 106 which feeds the boards transversely past an assembly having a working unit 1 and operating unit 2h the unit 1 also having a plurality of milling cutters 14d for milling transverse grooves in the boards.