A connecting rod machining positioning and clamping device

Abstract

The present application relates to a kind of connecting rod machining positioning clamping devices, it includes base and be located on the rotating table of base, the rotating shaft of the rotating table is coaxially connected together with rotating disc, mounting plate is fixed on the rotating disc, small head gasket is provided in the lower part of the mounting plate, and large head gasket is provided in the upper part, small head positioning pin is fixed on the small head gasket;Positioning device is symmetrically provided on the both sides of the mounting plate, the positioning device includes mounting bracket fixed on the mounting plate, positioning plate is provided in the inside of the mounting bracket, positioning cylinder for controlling the left and right movement of positioning plate is provided on the mounting bracket;Symmetrically provided with pressing cylinder on the both sides of the mounting plate, the pressing cylinder rod of pressing cylinder is connected with pressing plate, pressing block for being used to press the connecting rod is provided in the inside middle part of pressing plate.The connecting rod machining positioning clamping device is simple in structure, accurate in positioning, firmly clamped, and multiple connecting rods can be machined at a time, reduces the negative influence of human factor on machining.

Description

Technical Field

[0001] This invention relates to the field of connecting rod processing technology, specifically to a connecting rod machining positioning and clamping device. Background Technology

[0002] Connecting rods are crucial components of automotive engines, and with the rapid development of the automotive industry, their production and sales have seen significant growth. During operation, connecting rods are subjected to high levels of cyclic impact forces, inertial forces, and bending forces, and their quality directly affects engine performance. Currently, high-performance engines place higher demands on connecting rods, requiring high strength and stiffness, as well as high toughness, purity, and fatigue resistance.

[0003] In the current process of machining oil holes in connecting rods, the connecting rods are manually clamped one at a time and machined individually. After machining the large-end oil hole, a new fixture is changed to machine the large-end oil hole socket. This method is highly dependent on human factors, resulting in inconsistent machining during mass production and long positioning time. Furthermore, only one connecting rod can be machined at a time, requiring repositioning and clamping when changing parts, which is cumbersome. Manual tightening is also prone to inconsistent force, and if the fixing is not secure, the connecting rod is prone to shifting during oil hole machining. Frequent machine start-ups and stops are necessary, which is detrimental to the machine's lifespan, and when the number of connecting rods required is large, on-time delivery cannot be guaranteed. Therefore, it is necessary to propose a connecting rod machining positioning and clamping device suitable for machining multiple connecting rods. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a connecting rod machining positioning and clamping device that is simple in structure, accurate in positioning, firm in clamping, and capable of machining multiple connecting rods at a time. It reduces the negative impact of human factors on machining, has good machining consistency, produces aesthetically pleasing products, effectively improves machining efficiency, and can greatly shorten the machining cycle.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A linkage machining positioning and clamping device includes a base and a rotary table mounted on the base. The rotation axis of the rotary table is coaxially connected to a rotary disk. A mounting plate is fixed on the rotary disk. A small-end washer is provided at the lower part of the mounting plate and a large-end washer is provided at the upper part. A small-end positioning pin is fixed on the small-end washer.

[0007] The mounting plate is symmetrically provided with positioning devices on both sides. The positioning device includes a mounting frame fixed on the mounting plate, a positioning plate is provided inside the mounting frame, and a positioning cylinder is provided on the mounting frame to control the left and right movement of the positioning plate.

[0008] The mounting plate is symmetrically provided with clamping cylinders on both sides. The clamping cylinder rods of the clamping cylinders are connected to the clamping plate. The clamping block for clamping the connecting rod is provided in the middle of the inner side of the clamping plate.

[0009] In one embodiment of the present invention, the positioning plate and the mounting plate are arranged perpendicularly to each other. A slot is horizontally formed on the inner side of the positioning plate, and a mounting groove communicating with the slot is formed at the end of the inner side of the positioning plate away from the mounting plate. A plurality of clamping plates are clamped in the slot, and a first positioning post is fixedly provided on the clamping plate. A threaded hole is formed at the outer end of the positioning plate, and a tightening screw is screwed into the threaded hole to tighten the clamping plate.

[0010] In one embodiment of the present invention, a positioning bolt is threadedly connected to the first positioning post, and a locking nut is also provided on the positioning bolt.

[0011] In one embodiment of the present invention, the large end pad has a positioning hole in the middle that corresponds to the large end hole of the connecting rod, and a second positioning post is movably inserted through the clamping plate, the diameter of the second positioning post being adapted to the size of the positioning hole.

[0012] In one embodiment of the present invention, a support sleeve is fixedly provided on the outer side of the middle part of the pressing plate, and a through hole corresponding to the inner diameter of the support sleeve is provided on the pressing plate. The support sleeve and the positioning hole are coaxially arranged.

[0013] In one embodiment of the present invention, an angle mark is provided on the cylindrical surface of the rotating disk, and an indicator arrow is provided on the top of the rotating platform.

[0014] In one embodiment of the present invention, a photoelectric sensor is provided on the side of the rotating platform near the rotating disk, and two reflectors are arranged circumferentially at 180° on the rotating disk.

[0015] In one embodiment of the present invention, a reinforcing rib is provided between the mounting bracket and the mounting plate.

[0016] In one embodiment of the present invention, a drive device for driving the rotating shaft to rotate is provided on the rotating platform.

[0017] The beneficial effects of adopting the above technical solution are as follows:

[0018] The connecting rod machining positioning and clamping device provided by this invention has a simple structure. It uses a small-end positioning pin and a positioning plate driven by a positioning cylinder to position and clamp the connecting rod. The positioning is accurate and the clamping is firm. It can process multiple connecting rods at a time, which reduces the negative impact of human factors on machining. The machining consistency is good, the product is beautiful, the machining efficiency is effectively improved, and the machining cycle can be greatly shortened.

[0019] The number of clamping plates can be set in the slot according to processing needs, and the clamping plates are fixed by tightening screws, thereby realizing the adjustment of the number of connecting rods clamped, which is convenient and flexible to operate. The clamping plates are screwed with positioning bolts through the first positioning post, which facilitates the adjustment of the length of the positioning bolts in the early stage and periodically, so as to achieve sufficient clamping of the connecting rods.

[0020] By setting the positioning hole and the second positioning post, the connecting rod is positioned by the second positioning post before being clamped by the positioning plate. After the large end of the connecting rod is clamped by the positioning plate, the second positioning post is removed, and the connecting rod is clamped by the clamping block. Then the oil hole and oil hole recess of the large end are processed, and the positioning accuracy is greatly improved.

[0021] After clamping the connecting rod, the large-end oil hole is machined. After the large-end oil hole is machined, the mounting plate and the connecting rod are rotated 180° by the rotary table to machine the oil hole recess. The machining of the large-end oil hole and the oil hole recess can be completed in a single clamping, avoiding repeated positioning of the connecting rod, which is conducive to improving production efficiency and product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the present invention from another angle.

[0024] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0025] Figure 4 yes Figure 2 Another enlarged view of part A in the middle.

[0026] Figure 5 This is another schematic diagram of the structure of the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of the present invention after the pressure plate is removed.

[0028] Figure 7 This is a schematic diagram of the usage state of the present invention.

[0029] Figure 8 This is a schematic diagram of the connecting rod in this invention.

[0030] The components include: 1. Base, 2. Rotary table, 3. Drive device, 4. Rotary disk, 5. Mounting plate, 6. Small end gasket, 7. Small end positioning pin, 8. Mounting bracket, 9. Positioning cylinder, 10. Positioning cylinder rod, 11. Positioning plate, 12. Mounting groove, 13. Slot, 14. Slot plate, 15. First positioning post, 16. Positioning bolt, 1601. Locking nut, 17. Threaded hole, 18. Tightening screw, 19. Pressing plate, 20. Pressing block, 21. Pressing cylinder, 22. Pressing cylinder rod, 23. Support sleeve, 24. Second positioning post, 25. Large end gasket, 2501. Positioning hole, 26. Angle mark, 2601. Indicating arrow, 27. Connecting rod, 28. Small end hole, 29. Large end hole, 30. Large end oil hole, 31. Oil hole recess, 32. Reinforcing rib. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the invention will be described clearly and completely below in conjunction with specific embodiments.

[0032] like Figure 1 , Figure 2 , Figures 5-8 The illustrated connecting rod machining positioning and clamping device includes a base 1 and a rotary table 2 mounted on the base 1. The rotation axis of the rotary table 2 is coaxially connected to a rotary disk 4. A mounting plate 5 is fixedly mounted on the rotary disk 4. A small-end washer 6 is provided at the lower part of the mounting plate 5, and a large-end washer 25 is provided at the upper part. A small-end positioning pin 7 is fixedly mounted on the small-end washer 6. The small-end and large-end of the connecting rod 27 are positioned by the small-end washer 6 and the large-end washer 25 to ensure that the connecting rod 27 and the mounting plate 5 are in a parallel state. The small-end hole 28 of the connecting rod 27 is positioned by the small-end positioning pin 7.

[0033] The mounting plate 5 is symmetrically provided with positioning devices on both sides. The positioning device includes a mounting frame 8 fixed on the mounting plate 5. A positioning plate 11 is provided on the inner side of the mounting frame 8. A positioning cylinder 9 is provided on the mounting frame 8 to control the left and right movement of the positioning plate 11. The positioning cylinder rod 10 of the positioning cylinder 9 is connected to the outer side of the positioning plate 11. Each positioning plate 11 is provided with two positioning cylinders 9.

[0034] The mounting plate 5 is symmetrically provided with clamping cylinders 21 on both sides. The clamping cylinders 21 are perpendicular to the mounting plate 5. The clamping cylinder rod 22 of the clamping cylinder 21 is connected to the clamping plate 19. The clamping block 20 for clamping the connecting rod 27 is provided in the middle of the inner side of the clamping plate 19.

[0035] The connecting rod machining positioning and clamping device provided by the present invention has a simple structure. The positioning plate 11 driven by the small-end positioning pin 7 and the positioning cylinder 9 is used to position and clamp the connecting rod 27. The positioning is accurate and the clamping is firm. Multiple connecting rods 27 can be processed at one time. It reduces the negative impact of human factors on machining, has good machining consistency, produces beautiful products, effectively improves machining efficiency, and can greatly shorten the machining cycle.

[0036] like Figure 2 and Figure 3 As shown, the positioning plate 11 and the mounting plate 5 are arranged perpendicularly to each other. A slot 13 is horizontally formed on the inner side of the positioning plate 11, and a mounting groove 12 communicating with the slot 13 is provided at the end of the inner side of the positioning plate 11 away from the mounting plate 5. Several locking plates 14 are locked within the slot 13, and a first positioning post 15 is fixedly mounted on each locking plate 14. A threaded hole 17 is formed at the outer end of the positioning plate 11, and a tightening screw 18 is screwed into the threaded hole 17 to tighten the locking plate 14. As a further optimization, such as... Figure 4 As shown, a positioning bolt 16 is threadedly connected to the first positioning post 15, and a locking nut 1601 is also provided on the positioning bolt 16. By setting the locking nut 1601, the positioning bolt 16 is locked to prevent it from loosening.

[0037] The number of clamping plates 14 can be set in the slot 13 according to processing needs, and the clamping plates 14 are fixed by the tightening screws 18, thereby realizing the adjustment of the number of connecting rods 27 clamped, which is convenient and flexible to operate. The clamping plates 14 are screwed with positioning bolts 16 through the first positioning post 15, which facilitates the adjustment of the length of the positioning bolts 16 in the early stage and periodically, so as to achieve sufficient clamping of the connecting rods 27.

[0038] As a further optimization, the large-end gasket 25 has a positioning hole 2501 in its middle, corresponding to the large-end hole 29 of the connecting rod 27. A second positioning post 24 is movably inserted into the clamping plate 19, and the diameter of the second positioning post 24 is adapted to the size of the positioning hole 2501. As a further optimization, a support sleeve 23 is fixedly provided on the outer side of the middle part of the clamping plate 19. The clamping plate 19 has a through hole corresponding to the inner diameter of the support sleeve 23. The support sleeve 23 is coaxially arranged with the positioning hole 2501. By setting the support sleeve 23, the second positioning post 24 is supported when it is not in use, preventing the second positioning post 24 from falling out of the through hole of the clamping plate 19.

[0039] By setting the positioning hole 2501 and the second positioning post 24, the connecting rod 27 is positioned by the second positioning post 24 before being clamped by the positioning plate 11. After the large end of the connecting rod 27 is clamped by the positioning plate 11, the second positioning post 24 is removed, and the connecting rod 27 is clamped by the clamping block 20. Then the large end oil hole 30 and the oil hole socket 31 are processed, and the positioning accuracy is greatly improved.

[0040] After clamping the connecting rod 27, the large-end oil hole 30 is machined. After machining the large-end oil hole 30, the mounting plate 5 and the connecting rod 27 are rotated 180° by the rotary table 2 to machine the oil hole recess 31. The machining of the large-end oil hole 30 and the oil hole recess 31 can be completed in a single clamping, avoiding repeated positioning of the connecting rod 27, which is beneficial to improving production efficiency and product quality. In order to achieve the 180° rotation of the connecting rod 27, as one embodiment, the cylindrical surface of the rotary disk 4 is provided with an angle mark 26, and the top of the rotary table 2 is provided with an indicator arrow 2601, so that the 180° rotation of the mounting plate 5 and the connecting rod 27 is visually inspected; as another embodiment, a photoelectric sensor is provided on the side of the rotary table 2 near the rotary disk 4, and two reflectors are arranged circumferentially at 180° on the rotary disk 4, so that the 180° rotation of the mounting plate 5 and the connecting rod 27 is achieved by automated control.

[0041] A reinforcing rib 32 is provided between the mounting bracket 8 and the mounting plate 5 to enhance the structural stability of the mounting bracket 8 and prevent deformation.

[0042] The rotary table 2 is equipped with a drive device 3 for driving the rotating shaft to rotate. In one driving method, the drive device 3 is a geared motor or a rotary cylinder, and the rotating shaft is the output shaft of the geared motor or rotary cylinder. In another driving method, the rotary table 2 is a four-axis rotary table used to drive the rotating disk 4 to rotate, thereby causing the mounting plate 5 to rotate.

[0043] Work process:

[0044] Multiple connecting rods 27 are installed onto the clamping device, and the small end hole 28 and large end hole 29 of the connecting rod 27 are initially positioned by the small end positioning pin 7 and the second positioning pin 24.

[0045] Clamp one end of the large end hole 29 of the connecting rod 27 with the positioning plate 11, and then remove the second positioning post 24;

[0046] The outermost connecting rod 27 is pressed by the clamping block 20;

[0047] The large-end oil hole 30 is machined from the inside of the large-end hole 29 using a machining tool. After machining, the mounting plate 5 and connecting rod 27 are rotated 180°, and the oil hole recess 31 is machined from the outside of the large-end hole 29 using a machining tool.

[0048] After processing, remove connecting rod 27 from the clamping device.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning and clamping device for machining connecting rods, characterized in that: It includes a base and a rotating platform mounted on the base. The rotating axis of the rotating platform is coaxially connected to the rotating disk. A mounting plate is fixed on the rotating disk. A small-headed gasket is provided at the lower part of the mounting plate and a large-headed gasket is provided at the upper part. A small-headed positioning pin is fixed on the small-headed gasket. The mounting plate is symmetrically provided with positioning devices on both sides. The positioning device includes a mounting frame fixed on the mounting plate, a positioning plate is provided inside the mounting frame, and a positioning cylinder is provided on the mounting frame to control the left and right movement of the positioning plate. The mounting plate is symmetrically provided with clamping cylinders on both sides. The clamping cylinder rods of the clamping cylinders are connected to the clamping plate. A clamping block for clamping the connecting rod is provided in the middle of the inner side of the clamping plate. The positioning plate and the mounting plate are arranged perpendicularly to each other. A slot is horizontally opened on the inner side of the positioning plate. An mounting groove connected to the slot is provided on the inner side of the positioning plate at the end away from the mounting plate. Several clamping plates are clamped in the slot. A first positioning post is fixed on the clamping plate. A threaded hole is opened at the outer end of the positioning plate. A tightening screw is screwed into the threaded hole, and the clamping plate is tightened by the tightening screw.

2. The connecting rod machining positioning and clamping device according to claim 1, characterized in that: The first positioning pin is threaded with a positioning bolt, and the positioning bolt is also provided with a locking nut.

3. A connecting rod machining positioning and clamping device according to claim 1 or 2, characterized in that: The large-end gasket has a positioning hole in the middle that corresponds to the large-end hole of the connecting rod. A second positioning post is movably inserted through the clamping plate, and the diameter of the second positioning post is adapted to the size of the positioning hole.

4. The connecting rod machining positioning and clamping device according to claim 3, characterized in that: A support sleeve is fixedly provided on the outer side of the middle part of the pressing plate. A through hole corresponding to the inner diameter of the support sleeve is opened on the pressing plate. The support sleeve and the positioning hole are coaxially arranged.

5. The connecting rod machining positioning and clamping device according to claim 1, characterized in that: Angle markings are provided on the cylindrical surface of the rotating disk, and an indicator arrow is provided on the top of the rotating platform.

6. The connecting rod machining positioning and clamping device according to claim 1, characterized in that: A photoelectric sensor is installed on the side of the rotating platform near the rotating disk, and two reflectors are arranged circumferentially at 180° on the rotating disk.

7. The connecting rod machining positioning and clamping device according to claim 1, characterized in that: Reinforcing ribs are provided between the mounting bracket and the mounting plate.

8. The connecting rod machining positioning and clamping device according to claim 1, characterized in that: The rotating platform is equipped with a drive device that drives the rotating shaft to rotate.

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