SU1042957A1 - Transfer machine - Google Patents

Abstract

- 1. An AGGREGATED MACHINE containing aggregate heads with a cutting tool, a device for moving parts between heads, a mechanism for clamping parts with clamping supports and a loading mechanism with a device for single piece output and their drives, characterized in that, in order to increase productivity and automation of loading and clamping, when processing the heatsinks of power semiconductor devices, loading mechanism; The cradle is fitted with a cradle installed with the possibility of rotation, a flange with a spring-loaded pusher, a bracket and slats of the lever system, the flange is installed on the additionally inserted coupling with the xoiaa restrictor, and the lever system slats with reciprocating perpendicular to the axes of the rolling pin, bracket and straps of the lever system form an opening for the clamping support of the clamping mechanism. 2. The machine tool according to claim 1, characterized in that the clamping mechanism is provided with horizontal claws and two L-shaped levers articulated with them, installed with the ability to interact with the drive through an additionally inserted three-arm arm, where the pressure support drive is designed as a spring-loaded Z -shaped wedge and plunger. 3. The machine tool according to claim 1, characterized in that it is provided with a chamfering mechanism for the joint venture by the gouging method, made in the form of a carriage mounted with movement with a shaped stop and a spring-loaded tool holder, the support being located in the carriage for movement and kinematically connected rez keeper. Yu with cd

Description

The invention relates to machine tools, in particular to machine tools and can be used to process heat sinks for power semiconductor devices.

The aggregate machine is known, which contains aggregate heads with a cutting tool, a device for moving parts between heads, a mechanism for clamping parts with pressure supports and a loading mechanism with a device for issuing parts by parts and their actuators 1.

The disadvantages of the known machine is the impossibility of processing two or more parts, as well as the impossibility of automatically loading and clamping parts such as heat sinks for power semiconductor devices.

The aim of the invention is to increase productivity and automate loading and clamping when processing heat sinks of power semiconductor devices.

To achieve this goal, in an aggregate machine containing aggregate heads with a cutting tool, a device for moving parts between heads, a clamping mechanism for parts with clamping supports and a loading mechanism with a device for single piece output and their drives, the loading mechanism is provided with a cradle installed with the possibility of rotation. with a spring-loaded pusher, brackets and levers of the lever system, with the flange mounted on an additionally inserted rolling pin with a travel stop, and a lever system bar emy -, with respect to the axes perpendicular to the rolling pin reciprocating movement, and wherein the strap kronschteyn r1chazhnoy system form an opening under the presser support clamp mechanism.

In addition, the clamping mechanism is provided with horizontal claws and two L-shaped levers hinged with them, which are installed with the ability to interact with the drive through the additionally inserted three-shouldered lever, and the drive support is designed as a spring-loaded Z-wedge and plunger.

In this case, the machine is equipped with a chamfering gouging method, made in the form of a movable carriage with a shaped stop and a spring-loaded tool holder, the stop being located in the carriage with a possibility of movement and kinematically connected with the tool holder.

in FIG. 1 shows a machine, top view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - clamping device, top view; in fig. 4 is a section BB in FIG. 3; in fig. 5 is a view of B in FIG. four; in fig. 6 is a view of FIG. four; in fig. 7 is a view of the chamfering mechanism using the gouging method (position vr in FIG. 1); in fig. 8 is a view of an additional power head (the position of vir in FIG. 1); in fig. 9 is a view of the loading mechanism 5 in the initial position (position I in FIG. 1); in fig. 10 - view of the loading mechanism (the item is filed in the fixture); in fig. 11 is a view of the clamping and loading mechanisms; in fig. 12 - view of the unloading mechanism.

0 An aggregate heat treatment machine for power semiconductor devices contains a base 1 with rotary table 2 and column 3 installed on it. Side supports with power tables 4 with installed at position I — loading mechanism 5, in position — are flanged on the bed II - horizontal drilling head 6 and vertical drilling head 7, in position III - horizontal thread-cutting head 8, in position IV - horizontal drilling head 9 and vertical drilling head 10, in the V position, with a milling head 11, at the YI position, with a chamfering mechanism using the gouging method 12, in position VII, with an additional power horizontal swinging head 13 and a vertical head 14, in the VllI position, with a discharge device 15.- Each position of the turntable 2 has a clamping device 16 with machined parts 17 fixed in it. The clamping device 16 consists of a housing 18 in which a pusher 19 is mounted, connected by a joint 20 with a three-arm lever 21, a driving screw 22, hinges 23 are L-shaped ychagov-24, sticking in the form

 beams 25 connected to the housing by the hinge 26, the drive spring-loaded wedge 27 with the spring 28 and the plunger 29, the underwater support 30 connected by the hinge 31 to the housing and the hinge 32 to the plunger. Base plates 33-35 are fixed on the body, which serve to orient the parts. The mechanism for chamfering by gouging method 12 contains a drive carriage 36 placed on the guides 37, the drive 38 a tool holder 39 with a spring 40 and a cutter

5 41, connected by a hinge 42 to the drive carriage. On the side stand fixed stops 43 and 44, and in the drive carriage - movable stop 45 and the plunger 46.

The additional power swiveling head 13 consists of a spindle box 47 connected by a joint 48 to the body 49, an emphasis 50 and a power cylinder 51. The spindle box has spindles 52 with a cutting tool 53.

The loading mechanism 5 includes a housing 54 with an inclined chute 55, a device 56 for flush-out discharging a part fixed on the housing of the movable cradle 57, a skalok 58. The rail 9 is fixed on the rolling pin using a spring 60, a cover 61 and a ring 62. There is a stopper 63 on the rolling pin travel and flange, 64. On the flange are mounted the pusher 65 with spring 66, bracket 67, bar 68, levers 69 and 70 "of the lever system, which connect the pull 71 to the carriage. The carriage interacts with the ram 72. The unloading device 15 consists of a discharge chute 73, pins 74 mounted on a carriage 75 adapted for reciprocating in the horizontal and vertical planes. Aggregate machine for processing heat sinks works as follows. The machine is loaded, the parts are clamped and pressed in position I with a fixed rotary table. The loading of the machine is made by the loading mechanism 5 (Fig. I). The loading mechanism allows two machined parts to be loaded simultaneously (Fig. I, position I). The position of the loading mechanism before starting work is shown in FIG. 9. The billets on two inclined trays by gravity by means of the mechanism 56 by piece are fed into the cradles of the swivel cradle 57, which is in the position of receiving parts. When the cradle 57 is rotated, the workpieces are installed: on brackets, 67, mounted on the side faces of the flanges 64, mounted on individual rolling pins 58. On the rolling pins 58 there are separate carriages 59, which through springs 60 and rings 62 from the power cylinder 72 move the rolling pins 58 with flanges 64, in which spring-loaded plungers 65 are installed. On each flange 64, lever systems 68-70 are fixed, connected by means of 71 with corresponding carriages 58. As the cylinder 72 moves forward, parallel movement of parts 17 takes place lodgements of the cradle 57 in the clamping device. When the parts 17 are stopped by the stops 35 of the plunger 65, the springs 66 are pressed down, the parts 17 are pressed against the stops 35. The springs are compressed until the stop of the skalights 63 stops in the housing 54. 60. The movement of the carriages 59 through the grippers 71 and the lever systems 69 and 70 is transmitted to the bars 68, which in turn press the parts 17 to the base bar 34 and detach them from the brackets 67. The movement of the power table stops. Parts are loaded into the clamping device. The brackets 67 and lever systems 68-70 are mounted along the edges of the blanks 17, and the supports 30 of the clamping device extend between them. The position of the loading mechanism with the loaded part is shown in FIG. 10. At the time of loading the parts, the wedge 27 is in the lower position under the action of the cylinder of the clamping mechanism installed at the loading and unloading positions, while the springs 28 are compressed, and the plunger 29 has removed the supports 30 from the parts through the hinges 32. After loading the parts into the clamping device, the drive of the clamping mechanism rotates the screw 22 fixed axially in the housing 18. The screw 22 moves the pusher 19 with the rocker fixed to the axis 20 20. The rocker arm ends interact with the L-shaped levers 24, which rotate on the hinge 23 , fixed in the housing 18, interact at their other end with claws 25, which, rotating on the axis 26, clamp the parts 17 along the third reference plane to the base plate 33, thus, the parts are fixed with three points. Then the cylinder of the clamping mechanism releases the wedge 27. The springs 28 push the wedge upwards. The wedge is moved by the plungers 29, which, in turn, bring the underwater supports 30 all the way to the parts 17. The wedge 27 remains under the influence of the springs 28. The underwater supports are intended to lock the parts and prevent them from shifting from the base planes under the action of cutting forces. After the supply of the supports 30, the power cylinder 72 moves back along with the carriages 59, t gami 71, and lever systems 68-70. Rolling pin 58 is fixed. The springs 60 | UP of the stop of the caliper 62 into the covers 61 are released. Further movement takes place together of the carriages 59, skalok 58 with flanges 64. The plungers 65 under the action of the springs 66 return to the initial position. Movement occurs until the stop-power cylinder in the rear position. The movable cradle 57 returns to its original position. Fixed and clamped into the clamping device, the part passes successively the working positions of the turntable, at which it is machined with a tool. Complete machining of the part is carried out in one turn of the rotary table 2. In the position P, the horizontal head 6 and the vertical head 6 and the vertical head 7 drill holes. In position III, the horizontal head produces thread cutting. In the (IV) position, the holes are drilled, the head has been retooled for machining various types of parts, and the vertical head 10 drills the holes. In position V, the plane is milled by the milling head. In position VI, a burr is chamfered using a gouging method. Guides 37 are fixed in the housing 4. The actuator 38 moves the drive

carriage 36 guides. The cutters 41, fixed in the tool holder 39, perform chamfering (burrs) on the part 17. After finishing the machining of the part, the carriage 36 continues to move, while the movable stop 45, comes in contact with the fixed stop 43, stops. The plunger 46 is moved along the cone of the movable support and the tool holder 39 is turned around the axis 42, retraction of the cutters from the part. The actuator 38 switches backwards. At the end of the backward stroke, the movable stop 45 contacts with the fixed stop 44 and shifts relative to the drive carriage 36, releases the plunger 46, and under the action of the spring 40, the tool holder 39 turns to the stop of the plunger 46 into the small cylindrical surface of the movable stop 45.

In the VU position, the vertical head 14 is chamfered in the holes on the top, the horizontal tilting head is chamfered in the holes on the bottom (Fig. 8). In the retracted position of the spindle box 47, the table 2 is rotated with the clamping device 16 by one position. The power cylinder 51 begins to move downward, turning the spindle box 47 around the axis 48 fixed in the housing 49. The rotation continues until the box 47 stops against the stop 50. In this position, the spindle 52 takes up a strictly vertical position. The cutting tool 53 takes the position at which the chamfer is machined in the hole of the part in its nominal size. Power cylinder 51 moves in the opposite direction and retracts the head from the part.

In position VIII, the part is unloaded by the unloading mechanism 15 (Fig. I). The grip of the part and its movement from the clamping device to the discharge chute 73 is made by machining the holes of the part with clamps 74 mounted on

a carriage 75 having a reciprocating movement in the horizontal and vertical planes.

The technical and economic effect of using the proposed machine lies in the fact that it allows

full machining of heat sinks with high labor productivity due to simultaneous operation of all processing units, simultaneous processing of two parts and loading during processing.

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Claims (3)

- 1. Aggregate machine, comprising modular heads with cutting tools, a device for moving parts between heads, a mechanism for clamping parts with clamping supports and a loading mechanism with a device for piece delivery of parts and their drives, characterized in that, in order to increase productivity and automation of loading and clamping when processing heat sinks of power semiconductor devices, loading mechanism; the ki is equipped with a cradle mounted with the possibility of rotation, a flange with a spring-loaded pusher, an arm and straps of the lever system, the flange mounted on an additionally inserted rolling pin with a limiter, and the lever system with the possibility of reciprocating movement relative to the rolling axis, the bracket and slats of the lever system form an opening for the clamping support of the clamping mechanism. 2. Machine on π. 1, characterized in that the clamping mechanism is provided with horizontal grippers and two L-shaped levers pivotally connected to them, mounted to interact with the drive through the additionally introduced three-arm lever, the drive of the clamping support being made in the form of a spring-loaded Z-shaped wedge and plunger . 3. Machine on π. 1, characterized in that it is equipped with a chamfering method for gouging, made in the form of a carriage mounted with the ability to move with a profiled stop and a spring-loaded tool holder, the stop being located in the carriage with the possibility of movement and kinematically connected with the tool holder. >