CN211102059U - Brake shoe rest block robot welding workstation - Google Patents

Abstract

The utility model discloses a brake shoe rest pad welding workstation of robot, it includes gyration indexing mechanism, location frock and welding robot, gyration indexing mechanism includes big servo motor, little servo motor and gyration dish, big servo motor drives drive gear A through big speed reducer and rotates, drive gear A and big slewing bearing meshing, big slewing bearing top is fixed with mounting platform, the drive box has been placed on the mounting platform, the gyration dish is installed to the top both sides of drive box, little servo motor passes through the undersize speed reducer and drives drive gear B and rotate, drive gear B supports the meshing with little gyration, little gyration is supported and is connected with the gyration dish. The rotary displacement mechanism can adapt to the positioning of a robot welding tool, the noise is low during rotation, the rotary precision is high, a positioning tool workpiece is installed on a rear clamping cylinder to act, the workpiece is tightly pressed and cannot fall off when being turned, the support block is welded on a brake shoe assembly through the welding robot, the positioning precision is poor, and the efficiency is high.

Description

Brake shoe rest block robot welding workstation

Technical Field

The utility model relates to a weldment work station, concretely relates to brake shoe rest pad welding workstation of robot.

Background

The brake shoe is commonly called as a brake pad, the shape of the brake shoe is half-moon-shaped, the brake shoe is an important part in an automobile brake system, the quality of the brake shoe directly influences the safety and the reliability of an automobile, and the yield of the brake shoe influences the mass production of the automobile. Historically, brake shoes are integrally cast by cast iron, and have the defects of high manufacturing cost, heavy weight, high rejection rate, large resource waste, high labor intensity of workers, low production efficiency and the like. The welding brake shoe is forced to be used in the state. As shown in fig. 1, the anchor is a small part of the brake shoe assembly, but is a critical positioning part. At present, a self-made manual clamp is adopted for welding a bearing block on a brake shoe assembly in most factories, and the defects of poor positioning precision, low efficiency, large deformation and the like are caused by manual welding.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a brake shoe rest pad welding workstation of robot. The welding robot is used for rapidly and accurately welding the bearing block on the brake shoe assembly, so that the positioning precision is high and the efficiency is high.

The utility model provides a following technical scheme:

a robot welding workstation for the bearing blocks of brake shoes is composed of rotary position varying mechanism, locating tool, welding robot, gun cleaning and wire cutting machine, the positioning tool is arranged on the rotary position changing mechanism, the gun cleaning and wire cutting machine is used for cleaning a spray gun of the welding robot, the positioning tool clamps a workpiece through a strong welding clamping cylinder, the rotary position changing mechanism comprises a large servo motor, a small servo motor and a rotary disc, the large servo motor drives a driving gear A to rotate through a large speed reducer, the driving gear A is meshed with the large slewing bearing, an installation platform is fixed above the large slewing bearing, a driving box body is arranged on the mounting platform, rotary discs are arranged on two sides of the top of the driving box body, the small servo motor drives a driving gear B to rotate through a small speed reducer, the driving gear B is meshed with a small rotary support, and the small rotary support is connected with a rotary disc.

Further, the positioning tool comprises a strong welding clamping cylinder and a clamp base, the two sides of the clamp base are provided with the strong welding clamping cylinder through clamp pressing cylinder seats, the strong welding clamping cylinder is connected with a clamp, and a clamp pressing block is arranged on the clamp.

Further, the fixture base comprises a fixture lower mounting plate, a fixture rear mounting plate and a fixture supporting plate, the fixture lower mounting plate is vertically mounted on the fixture rear mounting plate, the fixture lower mounting plate and the fixture rear mounting plate are fixedly supported by the fixture supporting plate, a fixture circular tube positioning block is arranged on the rear side of the fixture lower mounting plate, a fixture front positioning block is mounted on the front side of the fixture lower mounting plate, fixture positioning webs are mounted on two sides of the fixture front positioning block, an inner side positioning fixture supporting block is mounted at the top of the fixture front positioning block and used for fixing the positioning fixture supporting block, and a side positioning fixture supporting block is mounted on the positioning fixture supporting block through a fixture supporting block positioning shaft.

Compared with the prior art, the beneficial effects of the utility model are that: this brake shoe rest pad welding workstation of robot, including gyration indexing mechanism, the location frock, this several most of welding robot, the location frock is installed on gyration indexing mechanism, gyration indexing mechanism is with the drive of alternating current servo motor, can adapt to the location of robot welding frock, it is little to have the noise during the gyration, the gyration precision is high, the location frock is through powerful welding die clamping cylinder centre gripping work piece, the back die clamping cylinder action is installed to the location frock work piece, it can guarantee not drop when the work piece overturns to compress tightly the work piece, realize the rest pad welding on the brake shoe assembly through welding robot, positioning accuracy is poor, high efficiency.

Drawings

FIG. 1 is a schematic view of a brake shoe assembly.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a side view of fig. 1.

Fig. 4 is a schematic structural diagram of the rotary shifting mechanism of the present invention.

Fig. 5 is a side view of fig. 4.

Fig. 6 is a top view of fig. 4.

Fig. 7 is the utility model discloses workstation safety house structure schematic diagram.

Fig. 8 is a schematic structural view of the positioning tool of the present invention.

Fig. 9 is a side view of fig. 8.

Fig. 10 is a top view of fig. 8.

In the figure: 1. a rotary displacement mechanism 101, a rotary displacement base 102, a large servo motor 103, a small speed reducer 104, a large speed reducer 105, a driving gear B, 106, a driving gear A, 107, a large rotary support 108, an installation platform 109, a driving box body 110, a rotary disc 111, a small rotary support 112 and a small servo motor;

2. the fixture comprises a positioning tool, 201, a fixture rear mounting plate, 202, fixture supporting plates, 203, fixture round tube positioning blocks, 204, a fixture lower mounting plate, 205, a fixture pressing cylinder seat, 206, a fixture front positioning block, 207, a fixture positioning web plate, 208, inner side positioning fixture supporting blocks A, B, 209, a positioning fixture supporting block, 210, side positioning fixture supporting blocks A, B, 211, fixture supporting block positioning shafts, 212, a forced welding clamping cylinder, 213, a fixture pressing block, 214 and a fixture;

3. a workstation safety room 31, an air collecting cover 32, a door frame 33, a maintenance door 34, an observation window 35 and a base;

4. the welding robot, the gun cleaning and wire cutting machine 5, the P L C control cabinet 6, the robot control cabinet 7, the welding power supply 8, and the protective baffle 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 2-3, the utility model discloses a brake shoe rest pad robot weldment work station, it includes gyration displacement mechanism 1, location frock 2, welding robot 4, clear rifle wire cutting machine 5, P L C switch board 6, robot control cabinet 7 and welding power supply 8, and location frock 2 is installed on gyration displacement mechanism 1, and location frock 2 is used for the clamping workpiece, and clear rifle wire cutting machine 5 is used for clearing up the spray gun of welding robot 4.

The rotary position changing mechanism 1, the welding robot 4 and the gun cleaning wire shearing machine 5 are installed in the workstation security room 3, the P L C control cabinet 6, the robot control cabinet 7 and the welding power supply 8 are arranged outside the workstation security room 3, and a protective baffle 9 is arranged outside the welding robot 4.

Fig. 4, fig. 5, fig. 6 show, gyration indexing mechanism 1 includes big servo motor 102, little servo motor 112 and gyration dish 110, install big servo motor 102 in the gyration indexing base 101, big servo motor 102 drives drive gear a106 through big speed reducer 104 and rotates, drive gear a106 meshes with big slewing bearing 107, big slewing bearing 107 top is fixed with mounting platform 108, the drive box 109 has been placed on mounting platform 108, gyration dish 110 is installed to the top both sides of drive box 109, little servo motor 112 drives drive gear B105 through little speed reducer 103 and rotates, drive gear B105 meshes with little gyration support 111, little gyration support 111 is connected with gyration dish 110.

The rotary displacement mechanism 1 is driven by an alternating current servo motor, a speed reduction mode adopts a precise planetary speed reducer, the rotary precision is high, the positioning requirement of a robot welding tool can be met, and the rotary displacement mechanism has the advantages of low noise and high rotary precision during rotation. The change of the welding position of the workpiece is realized by switching the clamping station and the welding station and matching with a robot.

The positioning tool 2 is arranged on the rotary position changing mechanism 1, a two-station design is adopted, and two sets of workpieces are arranged on each positioning tool. Each station is provided with an independent servo slewing mechanism, so that the positioning precision of slewing can be effectively ensured.

The positioning tool 2 adopts a mode of positioning holes at two sides of a workpiece, the workpiece is clamped by the air cylinder after being installed, and the workpiece is pressed to ensure that the workpiece cannot fall off when being turned.

Referring to fig. 8, 9 and 10, the positioning tool 2 includes a strong welding clamping cylinder 212 and a fixture base, the fixture base includes a fixture lower mounting plate 204, a fixture rear mounting plate 201 and a fixture support plate 202, the fixture lower mounting plate 204 is vertically mounted on the fixture rear mounting plate 201, the fixture lower mounting plate 204 and the fixture rear mounting plate 201 are fixedly supported by the fixture support plate 202, a fixture circular tube positioning block 203 is disposed at the rear side of the fixture lower mounting plate 204, a fixture front positioning block 206 is mounted at the front side of the fixture lower mounting plate 204, fixture positioning webs 207 are mounted at both sides of the fixture front positioning block 206, fixture pressing cylinder bases 205 are mounted at both sides of the fixture lower mounting plate 204, the strong welding clamping cylinder 212 is mounted on the fixture pressing cylinder bases 205, the strong welding clamping cylinder 212 is connected with a fixture 214, a fixture pressing block 213 is mounted on the fixture 214, and an inside, the inner positioning jig support block 208 is used to fix a positioning jig support block 209, and a side positioning jig support block 210 is attached to the positioning jig support block 209 via a jig support block positioning shaft 211.

The arm of the welding robot 4 is used for quickly and accurately welding the bearing block on the brake shoe assembly, and the center distance between the circular tube and the small circular arc on the bearing block can be accurately ensured.

As shown in fig. 7, the workstation security room 3 includes a door frame 32 and a maintenance door 33, wherein a wind-collecting cover 31 is disposed on the top of the door frame 32, the door frame 32 is mounted on a base 35, and an observation window 34 is opened on the door frame 32.

Workstation safety house 3 is used for protecting operator's safety to a smoke and dust diffusion that prevents the welding and produce everywhere, inhales the interface through the smoke and dust on the safety house, can be connected with smoke and dust treatment facility, thereby inhales away the welding smoke and dust in the main frame, in order to reach the healthy and pollution that reduces the production environment of protection operating personnel.

A welding robot 4 with an M-10 IA/12 arm of the Ranaceae and an arm spread by 1.4 meters is adopted for welding, the robot 4 is used for fixing a bearing block point 1 'on a brake shoe assembly 2' according to the figure 1 during welding, then a longitudinal seam on the outer side is welded, and then two welding seams on the other side are welded after a tool rotates 180 degrees. And resetting after welding, rotating the platform, rotating the welded workpiece to the outside of the safety house, and preparing for loading and unloading. The welding precision is high, and is fast, greatly reduced workman's intensity of labour.

In order to avoid welding splash and bonding inside the nozzle, the workstation is matched with a gun cleaning and wire cutting machine 5. After a certain number of workpieces are welded, the welding gun at the front end of the robot automatically moves to the gun cleaning and wire cutting machine, welding spatters in the nozzle are automatically cleaned, and the end of the welding wire is processed to improve the success rate of welding arcing.

And a robot control cabinet 7 is used as a core to control the rotation of all the clamps and the positioner. The teaching box is used for editing programs needing welding in an operation mode, and a plurality of programs can be stored and called when different workpieces are welded. The teaching box can be used for effectively improving the use efficiency by designing the touch screen.

This brake shoe rest pad welding workstation of robot, including gyration indexing mechanism, the location frock, this several most of welding robot, the location frock is installed on gyration indexing mechanism, gyration indexing mechanism is with the drive of alternating current servo motor, can adapt to the location of robot welding frock, it is little to have the noise during the gyration, the gyration precision is high, the location frock is through powerful welding die clamping cylinder centre gripping work piece, the back die clamping cylinder action is installed to the location frock work piece, it can guarantee not drop when the work piece overturns to compress tightly the work piece, realize the rest pad welding on the brake shoe assembly through welding robot, positioning accuracy is poor, high efficiency.

Claims (3)

1. Brake shoe rest pad welding workstation of robot which characterized in that: the welding robot comprises a rotary position changing mechanism (1), a positioning tool (2), a welding robot (4) and a gun cleaning wire shearing machine (5), wherein the positioning tool (2) is installed on the rotary position changing mechanism (1), the positioning tool (2) clamps a workpiece through a powerful welding clamping cylinder (212), the gun cleaning wire shearing machine (5) is used for cleaning a spray gun of the welding robot (4), the rotary position changing mechanism (1) comprises a large servo motor (102), a small servo motor (112) and a rotary disc (110), the large servo motor (102) drives a driving gear A (106) to rotate through a large speed reducer (104), the driving gear A (106) is meshed with a large rotary support (107), a mounting platform (108) is fixed above the large rotary support (107), a driving box body (109) is placed on the mounting platform (108), and the rotary disc (110) is installed on two sides of the top of the driving box body (109), the small servo motor (112) drives the driving gear B (105) to rotate through the small speed reducer (103), the driving gear B (105) is meshed with the small rotary support (111), and the small rotary support (111) is connected with the rotary disc (110).

2. The brake shoe anchor block robotic welding station of claim 1, wherein: the positioning tool (2) comprises a strong welding clamping cylinder (212) and a clamp base, wherein the strong welding clamping cylinder (212) is installed on two sides of the clamp base through a clamp pressing cylinder seat (205), the strong welding clamping cylinder (212) is connected with a clamp (214), and a clamp pressing block (213) is installed on the clamp (214).

3. The brake shoe anchor block robotic welding station of claim 2, wherein: the clamp base comprises a clamp lower mounting plate (204), a clamp rear mounting plate (201) and a clamp supporting plate (202), the lower clamp mounting plate (204) is vertically arranged on the rear clamp mounting plate (201), the clamp lower mounting plate (204) and the clamp rear mounting plate (201) are fixedly supported by a clamp supporting plate (202), a clamp circular tube positioning block (203) is arranged at the rear side of the clamp lower mounting plate (204), a clamp front positioning block (206) is arranged on the front side of the clamp lower mounting plate (204), two sides of the front positioning block (206) of the clamp are provided with clamp positioning webs (207), the top of the clamp front positioning block (206) is provided with an inner side positioning clamp supporting block (208), the inner positioning clamp supporting block (208) is used for fixing a positioning clamp supporting block (209), and a side positioning clamp supporting block (210) is arranged on the positioning clamp supporting block (209) through a clamp supporting block positioning shaft (211).

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