Robot polishing jig

Abstract

The utility model discloses a robot polishing jig which comprises a base, a limiting device, a supporting device and a clamping mechanism, the bottom face of the base is positioned through a cylindrical pin and fastened on a robot working platform through an inner hexagon screw, and the limiting device, the supporting device and the clamping mechanism are positioned and installed on the base. The limiting device comprises a limiting supporting seat, a limiting block and a limiting block adjusting screw, the limiting block is connected to the top of the limiting supporting seat, the position of the limiting block is rotationally adjusted through the limiting block adjusting screw, the supporting device comprises a top column and a supporting rod, the supporting rod is fixed to the base, and the top of the supporting rod is in threaded connection with the top column; the clamping mechanism comprises a clamping supporting base, an air cylinder, a clamping block, a wear-resisting block and a wear-resisting block supporting base. According to the tool, accurate positioning can be achieved, a workpiece can be firmly placed on the tool, the accuracy and safety of feeding are improved, the rejection rate of the workpiece is reduced, the efficiency of the whole polishing process is greatly improved, the safety of the operation process is improved, and it is guaranteed that products are delivered in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely relates to a kind of precision positioning fixture for robot mechanical arm product polishing, it is applicable to the automatic polishing of casting parting surface, sand core and sand mold cooperation gap, cold iron placement surface and riser and other parts. BACKGROUND

[0002] In the process of producing robot mechanical arm product in static pressure workshop, casting needs to polish its parting surface, sand core and sand mold cooperation gap, cold iron placement surface and riser and other parts. The following problems exist in traditional manual polishing mode:

[0003] 1, worker polishing workload is big, efficiency is low;

[0004] 2, poor working environment, low safety;

[0005] 3, when order quantity is big, artificial cannot complete task on time;

[0006] 4, modernization degree improves, and polishing worker is difficult to recruit.

[0007] To solve the above problems, the prior art adopts robot polishing mode, but robot polishing is according to the parameter of robot, in specific place, specific jig assembly is used, corresponding product program is prepared, and workpiece is polished, and operation is complex and has limitation, poor applicability. Therefore, a jig capable of accurately fixing workpiece and adapting to robot working parameters is needed to improve polishing efficiency and precision. SUMMARY

[0008] The utility model aims at overcoming the defects in the prior art, and provides a robot polishing jig, which realizes the limiting support and clamping fixation of the workpiece by using the self-structure of the workpiece, and solves the problems of the robot polishing in the prior art, such as limitation, complex positioning operation and low applicability.

[0009] In order to achieve the above object, the present application adopts the following technical scheme: A robot polishing jig, comprising a base, a limiting device, a supporting device and a clamping mechanism, the bottom surface of the base is positioned by a cylindrical pin and fastened on a robot work platform by an internal hexagonal screw, the base comprises a left base and a right base corresponding to two ends of a workpiece respectively, the limiting device, the supporting device and the clamping mechanism are positioned and installed on the base, the limiting device is arranged in two groups on the left base and the right base respectively, the limiting device comprises a limiting support seat, a limiting block and a limiting block adjusting screw, the limiting block is connected to the top of the limiting support seat, the position of the limiting block is adjusted by rotating the limiting block adjusting screw, the supporting device comprises a top column and a supporting rod, the supporting rod is fixed on the base, the top of the supporting rod is threadedly connected with the top column, the clamping mechanism comprises a clamping support seat, a cylinder, a clamping block, a wear-resistant block and a wear-resistant block support seat, the clamping support seat and the wear-resistant block support seat are fixed on the base respectively, the cylinder is fixed on the clamping support seat, the cylinder is connected with the clamping block on the front side, the clamping block is consistent with the vertical height of the bottom of the workpiece, the contact surface between the clamping block and the workpiece is designed as anti-skid lines, the wear-resistant block is connected to the top of the wear-resistant block support seat, and the top surface of the wear-resistant block is in contact with the bottom surface of the clamping block.

[0010] Further optimization, the four corners of the top surface of the base are provided with lifting lugs.

[0011] Further optimization, the top of the limiting support seat is provided with a limiting groove, and the limiting block is installed in the limiting groove.

[0012] Further optimization, the limiting block, the top column, the clamping block and the wear-resistant block are all heat treated, the surface hardness is adjusted to HRC28-32, and the strength is increased.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1. By means of accurate positioning and clamping mechanism, the position of the workpiece is stable during polishing, and the polishing precision is improved.

[0015] 2. Adapt to the limitation of robot work parameters, improve the polishing efficiency and safety.

[0016] 3. Reduce the workpiece scrap rate and reduce the equipment and tool wear.

[0017] 4. Improve the working environment, reduce the labor intensity of workers, and ensure the timely delivery of products. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the robot polishing jig.

[0019] Figure 2 It is a structural schematic view of the limiting device and the supporting device.

[0020] Figure 3 It is a structural schematic view of the clamping mechanism.

[0021] Figure 4 The figure is the assembly structure diagram of the robot polishing jig and the workpiece.

[0022] Figure 5 The figure is the assembly structure diagram of the robot polishing jig and the workpiece.

[0023] Marked in the figure: 1 - base, 2 - limiting device, 3 - supporting device, 4 - clamping mechanism, 201 - limiting block, 202 - limiting support seat, 203 - limiting block adjusting screw, 301 - supporting rod, 302 - top column, 401 - clamping support seat, 402 - air cylinder, 403 - wear-resistant block, 404 - clamping block, 405 - wear-resistant block support seat. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] The principle of the utility model is that the workpiece is sent to the top of the jig by manual line hoist, the workpiece positioning part is aligned with the limiting block 201, the workpiece is lowered to make the two ends of the workpiece supportable plane contact with the two side top columns 302, the top column 302 is designed as three points to make the workpiece stable, the given air cylinder 402 is limited to the position signal, and the air cylinder 402 pushes the clamping block 404 to clamp the workpiece.

[0026] As Figure 1 shown, the utility model provides a kind of robot polishing jig, including base 1, limiting device 2, supporting device 3 and clamping mechanism 4, the bottom surface of base 1 is positioned by cylindrical pin, and is fastened on robot work platform with internal hexagon screw, the top surface of base 1 installs lifting lug in four corners, and base 1 includes left base and right base, corresponding two ends of workpiece respectively, limiting device 2, supporting device 3 and clamping mechanism 4 are positioned and installed on left base and right base respectively.The polishing jig accurately fixes robot mechanical arm product on workbench, debugs program, and quickly and accurately completes polishing task.

[0027] The robot workbench limiting parameter is 3000mm in length direction, 1400mm in width direction, 1400mm in height direction, and the maximum weight bearing is 1000Kg. The work platform is two workbenches, and the work nature is that one workbench is used for polishing and the other workbench is used for up and down activity, and the two workbenches are exchanged left and right to polish. The maximum outline size of the robot mechanical arm product is 1484X526X397mm, and the weight is 201Kg. According to the workbench size and the robot tool path, one workbench is used for polishing.

[0028] As shown in Figure 2 , the limiting device 2 is arranged on the left and right bases, and the two limiting devices 2 are located on the two sides of the base 1 in the width direction, and are arranged according to the corresponding limiting point position of the workpiece. The limiting device 2 comprises a limiting support seat 202, a limiting block 201 and a limiting block adjusting screw 203. The limiting block 201 is connected to the top of the limiting support seat 202, the top of the limiting support seat 202 is provided with a limiting groove, and the limiting block 201 is installed in the limiting groove. Since the shrinkage degree of each workpiece to be polished is different, the position of the limiting block 201 is adjusted by the limiting block adjusting screw 203 to achieve the condition of limiting each workpiece. Three supporting devices 3 are arranged on the two bases 1, and the three supporting devices 3 are arranged according to the triangular three-vertex position. The supporting device 3 comprises a top column 302 and a supporting rod 301. The supporting rod 301 is fixed to the base 1, and the top of the supporting rod 301 is threadedly connected with the top column 302. The supporting device 3 is arranged according to the corresponding supportable plane position of the workpiece, so that the bottom surface of the workpiece and the top surface of the top column are connected. The supportable plane heights of the two ends of the workpiece are different, and the supporting rods 301 are correspondingly arranged at the corresponding heights.

[0029] As shown in Figure 3 , the clamping mechanism 4 comprises a clamping support seat 401, a cylinder 402, a clamping block 404, a wear-resistant block 403 and a wear-resistant block support seat 405. The clamping support seat 401 and the wear-resistant block support seat 405 are fixed on the base plate 1 respectively, the cylinder 402 is fixed on the clamping support seat 401, the cylinder 402 is connected with the clamping block 404 at the front side, the clamping block 404 is horizontally extended and retracted by the pushing and pulling of the cylinder 402, the clamping block 404 is consistent with the vertical height of the bottom of the workpiece, the contact surface between the clamping block 404 and the workpiece is designed as anti-skid lines, the wear-resistant block 403 is connected to the top of the wear-resistant block support seat 405, the top surface of the wear-resistant block 403 is in contact with the bottom surface of the clamping block 404, and the contact surface between the wear-resistant block 403 and the clamping block 404 is designed as a bright surface to reduce friction. The limiting block 201, the top column 302, the clamping block 404 and the wear-resistant block 403 are all heat treated, and the surface hardness is adjusted to HRC28-32 to increase the strength.

[0030] As shown in Figure 4 and Figure 5 , the whole step of the robot polishing mechanical arm is as follows:

[0031] Step 1: Position the base 1 of the robot grinding fixture onto the worktable using pins, and tighten it with four M12 hex screws. Turn on the cylinder to open it.

[0032] Step 2: The overhead crane lifting robot's robotic arm lifts the product above the fixture, aligns it with the fixture's limit and top column positions, places the product on the fixture, and checks that the product is in place.

[0033] Step 3: The jig clamping cylinder pushes the clamping block, making the anti-slip textured surface of the clamping block in close contact with the casting, and the clamping blocks at both ends clamp the product.

[0034] Step 4: The robot receives the signal, exchanges worktables, and moves the worktables to polish the product.

[0035] Step 5: After the worktable is pushed out to the correct position, a signal is given to open the cylinder. The cylinder retracts, the clamping block settles on the wear-resistant block, and the entire casting is in the open state. The worker then hoists the polished product to the designated position.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A robotic polishing fixture, comprising: The utility model relates to a workpiece positioning device, including base, limiting device, support device and clamping mechanism, the bottom surface of base is positioned through cylinder pin and is fastened on robot work platform with internal hexagon screw, and the base includes left base and right base, and the two ends of workpiece are corresponded respectively, and limiting device, support device and clamping mechanism are positioned and installed on the base, the limiting device is arranged 2 groups on left base and right base respectively, and the limiting device includes limiting support seat, limiting block and limiting block adjusting screw, limiting block is connected to the top of limiting support seat, and the position of limiting block is adjusted through limiting block adjusting screw rotation, the support device includes top column and support rod, and the support rod is fixed on the base, and the top of support rod is screw connected top column, the clamping mechanism includes clamping support seat, cylinder, clamping block, wear-resistant block and wear-resistant block support seat, and clamping support seat and wear-resistant block support seat are fixed on base plate respectively, cylinder is fixed on clamping support seat, cylinder front side is connected clamping block, and clamping block is consistent with the vertical height of workpiece bottom, and the contact surface of clamping block and workpiece is designed as anti -skid line, and wear-resistant block is connected in wear-resistant block support seat top, and the top surface of wear-resistant block is contacted with clamping block bottom.

2. The robotic polishing fixture of claim 1, wherein: The four corners of the top surface of the base are provided with lifting lugs.

3. The robotic polishing fixture of claim 1, wherein: The top of the limiting support seat is provided with a limiting groove, and the limiting block is installed in the limiting groove.

4. The robotic polishing fixture of claim 1, wherein: The limiting block, the top column, the clamping block and the wear-resistant block are all heat treated, and the surface hardness is adjusted to HRC28-32.

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