Positioning device for shaft part machining

Abstract

The utility model provides a positioning device for shaft part processing, which comprises a bottom plate and a shaft part to be processed, the bottom plate is provided with a first mounting plate, the first mounting plate is provided with a three-jaw chuck, the bottom plate is fixedly connected with a working table and a base, the base is positioned inside the working table, the base is provided with a lifting push rod, and the lifting push rod is connected with the three-jaw chuck. A pushing block is arranged at the output end of the lifting push rod, inclined faces are arranged on the two sides of the pushing block, a mounting groove is formed in the upper portion of the pushing block, and a supporting assembly is arranged in the mounting groove. According to the positioning device for shaft part machining, through the first positioning assembly composed of the lifting push rod, the push block, the connecting plate, the connecting rod, the idler wheel, the first positioning wheel, the supporting assembly and the like, different shaft parts to be machined can be rapidly positioned, and the machining efficiency of the shaft parts is improved; and the second positioning assembly performs auxiliary positioning and clamping, so that the positioning precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft part processing, in particular to a positioning device for shaft part processing. Background Technique

[0002] In industrial products, shaft parts are applicable to the maintenance operations of machining parts on one or more numerically controlled machine tools. Shaft parts are one of the typical parts often encountered in hardware fittings. It is mainly used to support transmission components, transmit torque and bear loads. According to the different structural forms of shaft parts, they can generally be divided into three categories: optical shafts, stepped shafts and special-shaped shafts; or divided into solid shafts, hollow shafts, etc.

[0003] During the processing of shaft parts, sometimes it is necessary to process different parts of them or shaft parts with different diameters and specifications, which requires multiple clamping operations. However, the existing positioning devices have relatively complex clamping steps and take a long time.

[0004] Therefore, it is necessary to provide a positioning device for shaft part processing to solve the above technical problems. Content of the Utility Model

[0005] The utility model provides a positioning device for shaft part processing, which solves the problems that multiple clamping operations are required when processing different parts of parts or shaft parts with different diameters and specifications, and the existing positioning devices have relatively complex clamping steps and take a long time.

[0006] To solve the above technical problems, a positioning device for shaft part processing provided by the utility model includes: a bottom plate and a shaft part to be processed. A first mounting plate is arranged on the bottom plate, and a three-jaw chuck is arranged on the first mounting plate. A workbench and a base are fixedly connected to the bottom plate, and the base is located inside the workbench. A lifting push rod is arranged on the base, a pushing block is arranged at the output end of the lifting push rod, inclined surfaces are arranged on both sides of the pushing block, a mounting groove is opened at the upper part of the pushing block, a support assembly is arranged in the mounting groove, a first through port and a second through port are opened at the upper part of the workbench, a connecting plate is fixedly connected to the workbench, a connecting rod is rotatably connected to the connecting plate, a roller is rotatably connected to the lower end of the connecting rod, the roller is always in contact with the inclined surface, and a first positioning wheel is arranged at the upper end of the connecting rod.

[0007] Preferably, the support assembly includes a connecting rod, the connecting rod is fixedly connected to the bottom of the mounting groove, a wheel set mounting seat is fixedly connected to the upper part of the connecting rod, two support wheels are arranged in the wheel set mounting seat, and the support wheels are in contact with the lower part of the shaft part to be processed.

[0008] Preferably, a guide sleeve is arranged on the inner side of the second through port, and the connecting rod is slidably connected to the guide sleeve.

[0009] Preferably, positioning grooves are formed on both sides of the lower part of the pushing block, and positioning blocks are arranged on both sides of the upper part of the base. The sizes and positions of the positioning blocks correspond to those of the positioning grooves.

[0010] Preferably, a second mounting plate is arranged on the bottom plate. An insertion opening is formed on the second mounting plate. Sliding rods are arranged on both the upper and lower sides of the insertion opening, and a second positioning assembly is arranged on both the left and right sides of the insertion opening.

[0011] Preferably, the second positioning assembly includes a cylinder. A moving plate is arranged at the output end of the cylinder. Both sides of the moving plate are slidably connected to the sliding rods. A fixing seat is arranged on the moving plate, and a second positioning wheel is arranged on the fixing seat.

[0012] Compared with the related art, a positioning device for machining shaft parts provided by the present invention has the following beneficial effects:

[0013] The present invention provides a positioning device for machining shaft parts. The first positioning assembly composed of a lifting push rod, a pushing block, a connecting plate, a connecting rod, a roller, a first positioning wheel, and a support assembly can quickly position different shaft parts to be machined, improving the machining efficiency of shaft parts; the auxiliary positioning and clamping performed by the second positioning assembly improve the positioning accuracy. Description of the Drawings

[0014] Figure 1 is a schematic structural view of a preferred embodiment of a positioning device for machining shaft parts provided by the present invention Figure 1 ;

[0015] Figure 2 is a schematic structural view of a preferred embodiment of a positioning device for machining shaft parts provided by the present invention Figure 2 ;

[0016] Figure 3 is a schematic structural view of the first positioning assembly in the present invention;

[0017] Figure 4 is a schematic structural view of the second positioning assembly in the present invention.

[0018] Reference numerals in the figure: 1, bottom plate; 2, first mounting plate; 3, three-jaw chuck; 4, workbench; 5, base; 6, lifting push rod; 7, pushing block; 8, inclined surface; 9, connecting plate; 10, connecting rod; 11, roller; 12, first positioning wheel; 13, mounting groove; 14, connecting rod; 15, wheel set mounting seat; 16, supporting wheel; 17, first through hole; 18, second through hole; 19, guide sleeve; 20, positioning groove; 21, positioning block; 22, second mounting plate; 23, insertion port; 24, sliding rod; 25, cylinder; 26, moving plate; 27, fixed seat; 28, second positioning wheel; 29, shaft part to be processed. Detailed implementation manners

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and implementation manners.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , wherein, Figure 1 is a schematic structural diagram of a preferred embodiment of a positioning device for machining shaft parts provided by the present utility model; Figure 1 ;

[0021] Figure 2 is a schematic structural diagram of a preferred embodiment of a positioning device for machining shaft parts provided by the present utility model; Figure 2 ;

[0022] Figure 3 is a schematic structural diagram of the first positioning assembly in the present utility model;

[0023] Figure 4 is a schematic structural diagram of the second positioning assembly in the present utility model.

[0024] A positioning device for machining shaft parts includes: a bottom plate 1 and a shaft part 29 to be processed. A first mounting plate 2 is arranged on the bottom plate 1. A three-jaw chuck 3 is arranged on the first mounting plate 2. A workbench 4 and a base 5 are fixedly connected to the bottom plate 1. The base 5 is located inside the workbench 4. A lifting push rod 6 is arranged on the base 5. A pushing block 7 is arranged at the output end of the lifting push rod 6. Inclined surfaces 8 are arranged on both sides of the pushing block 7. A mounting groove 13 is formed in the upper part of the pushing block 7. A support assembly is arranged in the mounting groove 13. A first through hole 17 and a second through hole 18 are formed in the upper part of the workbench 4. A connecting plate 9 is fixedly connected to the workbench 4. A connecting rod 10 is rotatably connected to the connecting plate 9. A roller 11 is rotatably connected to the lower end of the connecting rod 10. The roller 11 is always in contact with the inclined surface 8. A first positioning wheel 12 is arranged at the upper end of the connecting rod 10.

[0025] The lifting push rod 6, the pushing block 7, the connecting plate 9, the connecting rod 10, the roller 11, the first positioning wheel 12 and the support assembly etc. constitute the first positioning assembly; Place the shaft part 29 to be machined on the support assembly, and insert the end into the space in the middle of the three-jaw chuck 3. Start the lifting push rod 6 to drive the pushing block 7 to rise. During this process, the roller 11 that is always in contact with the inclined surface 8 rolls downward along the direction of the inclined surface 8. Therefore, the connecting rod 10 rotates around its connection part with the connecting plate 9, and the first positioning wheel 12 above the connecting rod 10 moves downward to approach and clamp the upper part of the shaft part 29 to be machined, thus completing its positioning. At this time, then use the three-jaw chuck 3 to clamp the end of the shaft; In actual use, when the diameter of the shaft part 29 to be machined increases, the positions of the pushing block 7 and the support assembly drop, and the first positioning wheel 12 moves upward. When the diameter decreases, the positions of the pushing block 7 and the support assembly rise, and the first positioning wheel 12 moves downward. Therefore, for all the shaft parts 29 clamped by the first positioning assembly, the center position remains unchanged, which is convenient for the clamping and positioning of the three-jaw chuck 3.

[0026] The support assembly includes a connecting rod 14, the connecting rod 14 is fixedly connected to the bottom of the installation groove 13, an upper part of the connecting rod 14 is fixedly connected with a wheel group mounting seat 15, two support wheels 16 are arranged in the wheel group mounting seat 15, and the support wheels 16 are in contact with the lower part of the shaft part 29 to be machined.

[0027] The support wheels 16 support the shaft part 29 to be machined from below.

[0028] A guide sleeve 19 is arranged inside the second through port 18, and the connecting rod 14 is slidably connected with the guide sleeve 19.

[0029] The guide sleeve 19 makes the connecting rod 14 more stable during the lifting process.

[0030] Positioning grooves 20 are opened on both sides of the lower part of the pushing block 7, positioning blocks 21 are arranged on both sides of the upper part of the base 5, and the sizes and positions of the positioning blocks 21 correspond to those of the positioning grooves 20.

[0031] The positioning grooves 20 and the positioning blocks 21 play a positioning role in the lifting process of the pushing block 7.

[0032] A second mounting plate 22 is arranged on the bottom plate 1, an insertion port 23 is opened on the second mounting plate 22, sliding rods 24 are arranged on the upper and lower sides of the insertion port 23, and a second positioning assembly is arranged on the left and right sides of the insertion port 23.

[0033] During machining, insert the shaft part 29 to be machined into the insertion port 23, and use the second positioning assembly for auxiliary positioning and clamping after positioning.

[0034] The second positioning component includes a cylinder 25, the output end of the cylinder 25 is provided with a moving plate 26, both sides of the moving plate 26 are slidably connected with sliding rods 24, a fixed seat 27 is arranged on the moving plate 26, and a second positioning wheel 28 is arranged on the fixed seat 27.

[0035] The cylinder 25 pushes the moving plate 26 to move towards the middle of the to-be-machined shaft part 29 from both sides simultaneously, and then clamps it with the second positioning wheel 28.

[0036] The working principle of a positioning device for machining shaft parts provided by the present utility model is as follows:

[0037] Place the to-be-machined shaft part 29 on the support component, insert the end into the space in the middle of the three-jaw chuck 3, start the lifting push rod 6 to drive the pushing block 7 to rise. During this process, the roller 11 that is always in contact with the inclined surface 8 rolls downward along the direction of the inclined surface 8, so the connecting rod 10 rotates around its connection part with the connecting plate 9, and the first positioning wheel 12 above the connecting rod 10 moves downward to approach and clamp the upper part of the to-be-machined shaft part 29, thereby completing its positioning. At this time, then clamp the end of the shaft with the three-jaw chuck 3.

[0038] Compared with the related technology, a positioning device for machining shaft parts provided by the present utility model has the following beneficial effects:

[0039] The first positioning component composed of the lifting push rod 6, the pushing block 7, the connecting plate 9, the connecting rod 10, the roller 11, the first positioning wheel 12 and the support component can quickly position different to-be-machined shaft parts 29, improving the machining efficiency of the shaft parts; the auxiliary positioning and clamping by the second positioning component improves the positioning accuracy.

[0040] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A positioning device for machining shaft parts, characterized in that Comprising: A bottom plate and a shaft part to be processed. A first mounting plate is arranged on the bottom plate. A three-jaw chuck is arranged on the first mounting plate. A workbench and a base are fixedly connected to the bottom plate. The base is located inside the workbench. A lifting push rod is arranged on the base. A pushing block is arranged at the output end of the lifting push rod. Slopes are arranged on both sides of the pushing block. An installation groove is formed in the upper part of the pushing block. A support assembly is arranged in the installation groove. A first through port and a second through port are formed in the upper part of the workbench. A connecting plate is fixedly connected to the workbench. A connecting rod is rotatably connected to the connecting plate. A roller is rotatably connected to the lower end of the connecting rod. The roller is always in contact with the slope. A first positioning wheel is arranged at the upper end of the connecting rod.

2. The positioning device for machining shaft parts according to claim 1, wherein, The support assembly includes a connecting rod. The connecting rod is fixedly connected to the bottom of the installation groove. A wheel set mounting seat is fixedly connected to the upper part of the connecting rod. Two support wheels are arranged in the wheel set mounting seat. The support wheels are in contact with the lower part of the shaft part to be processed.

3. A positioning device for machining shaft parts according to claim 2, characterized in that, A guide sleeve is arranged inside the second through port. The connecting rod is slidably connected to the guide sleeve.

4. A positioning device for machining shaft parts according to claim 1, characterized in that, Positioning grooves are formed in the lower parts on both sides of the pushing block. Positioning blocks are arranged on the upper parts on both sides of the base. The sizes and positions of the positioning blocks correspond to those of the positioning grooves.

5. A positioning device for machining shaft parts according to claim 1, characterized in that, A second mounting plate is arranged on the bottom plate. An insertion port is formed in the second mounting plate. Slide rods are arranged on the upper and lower sides of the insertion port. A second positioning assembly is arranged on the left and right sides of the insertion port.

6. The positioning device for machining shaft parts according to claim 5, characterized in that, The second positioning assembly includes a cylinder. A moving plate is arranged at the output end of the cylinder. The two sides of the moving plate are slidably connected to the slide rods. A fixed seat is arranged on the moving plate. A second positioning wheel is arranged on the fixed seat.

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