SU1252113A1 - Arrangement for automatic tool changing in metal-working machine - Google Patents

Description

The invention relates to mechanical engineering and can be used in machine tool industry, in particular in multi-purpose machines.

The aim of the invention is to improve the reliability of the device and increase productivity by reducing the number of angular movements and connections between the mechanisms of the tool changer.

FIG. I shows a device for automatic tool changing on a cutting machine. general form; in fig. 2 is a kinematic diagram of the device; in fig. 3 is a view A of FIG. one; in fig. 4- section BB in FIG. one; in fig. 5 shows a section B-B in FIG. four; in fig. 6 - section G-Y in FIG. 3

The device for automatic tool change on the M5 machine tool consists of a plate 1 mated to a stand 2 guides 3. A running nut 4 on a plate I is joined by a screw 5 to a gear wheel 6, which is connected to gears 7 and 8, respectively. Gear the wheel 7 is connected with the gear wheel 9, the wheel 8 is mounted on the shaft 10, which is connected through the clutch 11 to the electric motor 12 of the reciprocating mechanism 13. A gear wheel 9 is mounted on a lead screw 14, one end of which is fixed to the housing of the reciprocating mechanism 13, and the other connected to the running gun 15 fixed to the slider 16. The slide and plate are interconnected by guides. A plate I is associated with a rotation of a mechanical arm 17, consisting of an electric motor 18 connected by means of a coupling 19 with a screw 20, which is coupled to a worm wheel 21 located on axis 22. A conical is rigidly connected with a worm wheel 21. a gear wheel 23 mating with another bevel wheel 24 mounted on a splined shaft 25. The splined shaft 25 is mated by splines with a sleeve 26, which is mounted on bearings 27 in the central hole of the plate I. The sleeve 26 is joined by screws 28 with a mechanical housing 29 hands 17 with whom sv for There are two dual hydraulic cylinders 30 and 31, having rods 32 and 33, for moving two lever clamps 34 and 35 to tools 36 and 37 located in the tool magazine 38 and the machine spindle 39, respectively. The spindle 39 of the machine is mounted in the headstock 40, mixing in the vertical direction. The lever clamps 34 and 35 consist of levers 41, which are mounted in two guides 42 and fixed on the rod 33 using axles 43. V-shaped clamps 44 are made at one end of each lever 41, and rollers are mounted on the other axis 45 46.

Perpendicular to the axis of the stem 33, a spring 47 is disposed in the opening 48 of the sheath 49 to expand the levers 41.

The directional valves 50 and 51 are respectively connected by pipelines 52-55, which serve to supply and drain fluid to the hydraulic cylinders 30 and 31. To control the rotation of the mechanical arm 17 at a predetermined angle, microswitches 56 and 57 are in contact with the cam 58 located on the disk 59 associated with the axis 22. The plate 1 through the axis 60, mounted on the slider 16, is associated with the disk 61, on which the electric motor 62 is installed, which pivots the turn of the toolman 38. from the worm gear 6, rigidly fixed on the spike 64 and mating with the worm 65 placed in the housing 66. By means of the coupling 67 the worm gear 63 is connected

with an electric motor 62. Microswitches 68 are placed on the tool store 38 for restricting the movement of the plate I and the slide 16 on the stand 2, and the cam 70 is fixed on the plate 1. The tool 38 has sockets 71 for the tool.

The device for automatic tool change on a cutting machine works as follows.

To find the required 7LB socket

the tool store 38, at the moment when the mechanical arm 17, the plate G and the crawl 16 are in the initial position, is given a command from a numerical control system (not shown) to the magazine drive motor 62

tools. When the electric motor 62 rotates, the screw is turned to 65 and the worm gear 63 associated with it is at the required angle, and the tool magazine 38 is rotated around axis 60. Spindle head 40 is

the command from the numerical control system is moved to the 0 | -Oi position of the tool change. To move simultaneously two clips 34 and 35 from hand 17 to tool 36, located in

The socket / ie 71 of the tool magazine 38, and the tool 37, located in the spindle 39, is fed from the CNC system to supply pressure to the pipe 53, which then supplies pressure to the hydraulic cylinder 30, the displacement rod 33 and lever levers 34 n

35 until the on-tool slots of tools 36 and 37 enter. They then send a signal from the CNC system to apply pressure to pipeline 54 to simultaneously:} press two lever clips 34 and 35 of tools 36 and 37, from which (pipeline) pressure is supplied to the cylinder 31, the movement of the rod 32, which, acting by a tapered part on the rollers 46, rotates the levers 41 relative to the axis 43 ti, thereby

two V-shaped grippers 44 clamp tools 36 and 37 located cooTFieT in the slot 71 of the tool magazine 38 and the spindle 39 of the machine. The control system (not shown) then sends a control signal to the electric motor 12 for simultaneously removing the tools 36 and 37 from the socket 71 of the tool magazine 38 and the spindle 39. At the same time, the movement is communicated from the electric motor 12 through the wheels 8. 6, 7 and 9 screws 5 and 14 (one of which is made with the left direction of the helix) at the same time the plate and the slider 16, while rotating, the driving screws 5 and 14 by means of the driving nuts 4 and 15 mix the plate 1 to the left, and the slider 16 - to the right until cam 70 presses microswitch 68. This I and the slider 16 stop and the tools 36 and 37 are removed from the socket 71 of the tool magazine 38 and the spindle 39. Now the control system sends a control signal to the electric motor 18, while rotating, the torque through the worm to the 20 and the worm wheel 21 is transmitted bevel gear pair 23 and 24 and through the slit shaft 25 sleeve 26 and further mechanical

hand 17, in which there are tools 36 and .17.

Simultaneously turning the arm 17 rotates the axis 22 with the disk 59, the cam 58 of which, after the arm 17 turning arm 180, presses the microswitch 56, which raises the control signal to the motor 12 to perform the simultaneous movement of the plate 1 to the right, and the slide 16 to the left until the cam 70 presses the microswitch 69. The tool 37 is then inserted into the socket 71 of the tool magazine 38, and the tool 36 into the machine 39 and 39. To simultaneously unseat tools 36 and 37, a control signal is supplied from the CNC system to supply pressure to pipeline 55 and then to hydraulic cylinder 31, shifter ntoka 32, which releases rollers 46. The levers under the force of spring 47 release V-shaped Q clamps 44 and tools 36 and 37 are released. Further (by applying pressure to the pipe 52, acting on the rod 33 and moving the lever clamps 34 and 35 to the arm 17. Thus, the tool-changing cycle ends.

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Claims (2)

1. DEVICE FOR AUTOMATIC CHANGE OF THE TOOL ON THE METAL-CUTTING MACHINE, containing a slider and a plate installed with the possibility of mutual movement on the guide racks of the machine, a rotating tool magazine located on the slider, and a two-gripping arm mounted on the plate, characterized in that, for the purpose of to increase the reliability and performance of the device, the slider and the plate are kinematically connected with each other and installed with the possibility of synchronous movement in opposite directions, with second arm mounted for reciprocating movement. 2. The device according to π. I, characterized in that the two-gripping arm is equipped with two twin power cylinders, the pistons of which are connected with its grips. Figure 1 SU ,,., 1252113