Machining clamp for rod-shaped part of diesel engine

Abstract

The utility model provides a machining clamp for rod-shaped parts of a diesel engine, and belongs to the technical field of part machining. Comprising a base, two clamping mechanisms are arranged at the top of the base, each clamping mechanism comprises a mounting base slidably connected with the top of the base, a gear motor is fixedly mounted on one side of each mounting base, a connecting disc is fixedly connected to the output end of each gear motor, and two symmetrically-arranged connecting caps are fixedly connected to each connecting disc; one side of the connecting cap is rotatably connected with a connecting rod, and the top of the mounting base is slidably connected with a sliding base. By arranging the two groups of clamping plates with adjustable angles, the clamping device can be more attached to the outer wall of a rod-shaped workpiece, the machining flexibility is improved, the area of the clamping plates is larger, the contact area of the clamping plates and the workpiece is larger, the pressure intensity of the contact part is reduced, the workpiece is ensured to be kept in a more ideal clamping state in the machining process, and the machining efficiency is improved. And workpiece deformation caused by improper clamping is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of part processing, and particularly relates to a fixture for processing a rod-shaped part of a diesel engine. Background Technique

[0002] A diesel engine is a machine that can convert other forms of energy into mechanical energy, which involves a variety of rod-shaped parts. An important rod-shaped part is the connecting rod structure. Its function is to connect the piston and the crankshaft, and transmit the force received by the piston to the crankshaft, converting the reciprocating motion of the piston into the rotational motion of the crankshaft. The connecting rod body includes a small head connected to the piston pin, a large head connected to the crankshaft, and a connecting rod shank connecting the large head and the small head; the processing of the connecting rod is also particularly important. Especially when boring holes at both ends of the connecting rod, the connecting rod needs to be fixed on a fixture for processing.

[0003] Chinese Patent with the authorized publication number CN215544010U discloses a fixture for processing a rod-shaped part of a diesel engine, which includes a support base, a fixture support group, an end positioning group, and an end processing base placed on the support base. There are two groups of end processing bases, which correspondingly support the two ends of the rod-shaped part. The fixture support group correspondingly supports the middle part of the rod-shaped part. There are two groups of end positioning groups, which are correspondingly clamped and positioned at the two ends of the rod-shaped part; a middle rod clamping group for clamping the middle part of the rod-shaped part and a driving cylinder for driving the clamping are also arranged on the fixture support group; each middle rod clamping group includes two fixture units that are clamped around the middle part of the rod-shaped part and a bending unit connected to the bottom end of the fixture unit, and the connection parts of the two fixture units and the two bending units are correspondingly hinged on both sides of the fixture support group.

[0004] In the above patent, when a clamping operation is required, the driving cylinder is started to make the fixture unit clamp around the rod-shaped part. The contact area between the clamping edge and the workpiece is small, resulting in uneven stress distribution on the workpiece during processing, leaving indentations or scratches on the workpiece surface. When the clamping force is small, the workpiece rotates. Therefore, this application provides a fixture for processing a rod-shaped part of a diesel engine to meet the requirements. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a fixture for processing a rod-shaped part of a diesel engine to solve the problem that when a clamping operation is required, the driving cylinder is started to make the fixture unit clamp around the rod-shaped part. The contact area between the clamping edge and the workpiece is small, resulting in uneven stress distribution on the workpiece during processing, leaving indentations or scratches on the workpiece surface, and the workpiece rotates when the clamping force is small as mentioned in the above background technique.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A processing fixture for a rod-shaped part of a diesel engine, comprising a base. Two clamping mechanisms are arranged on the top of the base. The clamping mechanism includes a mounting seat slidably connected to the top of the base. A reduction motor is fixedly installed on one side of the mounting seat. The output end of the reduction motor is fixedly connected to a connection disk. Two symmetrically arranged connection caps are fixedly connected to the connection disk. One side of the connection cap is rotatably connected to a connecting rod. A sliding seat is slidably connected to the top of the mounting seat. One side of the sliding seat is rotatably connected to one side of the connecting rod. One side of the sliding seat is fixedly connected to a fixed rod. An elastic sleeve is clamped on the outer wall of the fixed rod. One side of the elastic sleeve is fixedly connected to a clamping plate.

[0008] Preferably, an adjusting mechanism is arranged inside the base. The adjusting mechanism includes a servo motor fixedly connected to one side of the base. The output end of the servo motor is fixedly connected to a bidirectional screw rod. Both ends of the bidirectional screw rod are rotatably connected to the inside of the base. Two threaded seats are threadedly connected to the outer wall of the bidirectional screw rod. The top of the threaded seat is fixedly connected to the bottom of the mounting seat.

[0009] Preferably, elastic plates are fixedly connected to both the top and the bottom of the clamping plate.

[0010] Preferably, a plurality of uniformly arranged anti-slip bumps are fixedly connected to one side of the elastic plate.

[0011] Preferably, a plurality of uniformly arranged rubber strips are fixedly installed on the clamping plate.

[0012] Preferably, limiting caps are fixedly connected to both ends of the fixed rod.

[0013] Preferably, a raised strip for restricting the moving direction of the sliding seat is arranged on the top of the mounting seat.

[0014] Preferably, a support bracket for supporting the reduction motor is arranged on one side of the mounting seat.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] In the above solution, by arranging two groups of clamping plates that can adjust the angle, it can be more fitting to the outer wall of the rod-shaped workpiece, improving the flexibility of processing. And the area of the clamping plate is larger, with a larger contact area with the workpiece, reducing the pressure at the contact part, ensuring that the workpiece maintains a more ideal clamping state during processing, and reducing the deformation of the workpiece caused by improper clamping.

[0017] By arranging the adjusting mechanism, the relative positions of the two clamping mechanisms can be adjusted, and the distance between the clamping mechanisms can be flexibly adjusted according to different specifications and diameters of the rods, so as to adapt to a variety of workpieces, increasing the versatility, ensuring that the workpiece is more stable during clamping, reducing the swing or deformation of the workpiece, and improving the processing accuracy.

[0018] By setting an elastic plate, which has the characteristic of elastic deformation and can deform according to different workpieces, one side of the elastic plate is always in contact with the outer wall of the workpiece. Since the elastic plate exerts pressure on the outer wall of the workpiece, the frictional force at the contact part between the elastic plate and the workpiece is relatively large, thus ensuring the stability of the workpiece when it is clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0020] Figure 1 is a schematic three-dimensional structure diagram of a processing fixture for a rod-shaped part of a diesel engine;

[0021] Figure 2 is a schematic internal structure diagram of a processing fixture for a rod-shaped part of a diesel engine;

[0022] Figure 3 is a schematic three-dimensional structure diagram of a clamping mechanism;

[0023] Figure 4 is a schematic three-dimensional structure diagram of a fixing rod and an elastic sleeve.

[0024] [Reference Signs]

[0025] 1, base; 2, clamping mechanism; 21, mounting seat; 22, reduction motor; 23, connecting plate; 24, connecting cap; 25, connecting rod; 26, sliding seat; 27, fixing rod; 28, elastic sleeve; 29, clamping plate; 3, adjusting mechanism; 31, servo motor; 32, bidirectional screw; 33, threaded seat; 4, elastic plate; 5, anti-slip bumps; 6, rubber strip; 7, limiting cap.

[0026] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications still fall within the scope of the appended claims. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will combine the accompanying drawings and specific embodiments to describe in detail a processing fixture for rod-shaped parts of a diesel engine provided by the present utility model. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present utility model.

[0028] It should be noted that in the specification, references to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe specific features, structures, or characteristics, implementing such features, structures, or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0029] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0030] As Figures 1-4 shown, an embodiment of the present utility model provides a processing fixture for rod-shaped parts of a diesel engine, including a base 1. Two clamping mechanisms 2 are arranged on the top of the base 1. The clamping mechanism 2 includes a mounting base 21 slidably connected to the top of the base 1. A reduction motor 22 is fixedly installed on one side of the mounting base 21. The output end of the reduction motor 22 is fixedly connected to a connecting disk 23. Two symmetrically arranged connecting caps 24 are fixedly connected to the connecting disk 23. One side of the connecting cap 24 is rotatably connected to a connecting rod 25. A sliding seat 26 is slidably connected to the top of the mounting base 21. One side of the sliding seat 26 is rotatably connected to one side of the connecting rod 25. A fixing rod 27 is fixedly connected to one side of the sliding seat 26. An elastic sleeve 28 is clamped on the outer wall of the fixing rod 27. A clamping plate 29 is fixedly connected to one side of the elastic sleeve 28.

[0031] When clamping and fixing a rod-shaped part, first adjust the lengths of the two mounting seats 21 according to the length of the part. Place the workpiece between the clamping plates 29, start the reduction motor 22 to drive the connection disk 23 to rotate. The connection disk 23 drives the connection cap 24 to rotate, and the connection cap 24 drives one end of the connecting rod 25 to rotate. Therefore, the other end of the connecting rod 25 drives the sliding seat 26 to slide on the mounting seat 21, and the two sliding seats 26 approach synchronously. When the clamping plate 29 touches the outer wall of the workpiece, according to the curvature of the outer wall of the workpiece, the clamping plate 29 undergoes slight deformation and drives the elastic sleeve 28 to rotate on the fixed rod 27. By providing two sets of clamping plates 29 that can adjust the angle, it can better fit the outer wall of the rod-shaped workpiece, improve the flexibility of processing, and the area of the clamping plate 29 is relatively large, with a relatively large contact area with the workpiece, reducing the pressure at the contact part, ensuring that the workpiece maintains a more ideal clamping state during processing, and reducing workpiece deformation caused by improper clamping.

[0032] As Figure 2 shown in the figure, an adjusting mechanism 3 is arranged inside the base 1. The adjusting mechanism 3 includes a servo motor 31 fixedly connected to one side of the base 1. The output end of the servo motor 31 is fixedly connected with a bidirectional screw 32. The two ends of the bidirectional screw 32 are rotatably connected to the inside of the base 1. Two threaded seats 33 are threadedly connected to the outer wall of the bidirectional screw 32, and the top of the threaded seat 33 is fixedly connected to the bottom of the mounting seat 21.

[0033] When clamping and processing a rod-shaped workpiece, first, according to the length of the workpiece, start the servo motor 31 to drive the bidirectional screw 32 to rotate. During the rotation of the bidirectional screw 32, it drives the two threaded seats 33 to move synchronously, thereby driving the mounting seat 21 to move synchronously. By providing the adjusting mechanism 3, the relative positions of the two clamping mechanisms 2 can be adjusted, and the distance between the clamping mechanisms 2 can be flexibly adjusted according to different specifications and diameters of the rods, so as to adapt to a variety of workpieces, increasing the versatility, ensuring that the workpiece is more stable during clamping, reducing the swing or deformation of the workpiece, and improving the processing accuracy.

[0034] As Figures 1-4 shown in the figure, elastic plates 4 are fixedly connected to both the top and bottom of the clamping plate 29. By providing the elastic plates 4, the elastic plates 4 have the characteristic of elastic deformation and can deform according to different workpieces, so that one side of the elastic plate 4 always fits the outer wall of the workpiece. Since the elastic plate 4 generates pressure on the outer wall of the workpiece, the friction force at the contact part between the elastic plate 4 and the workpiece is relatively large, thus ensuring that the workpiece remains stable when being clamped.

[0035] As Figure 4 shown in the figure, a plurality of uniformly arranged anti-slip bumps 5 are fixedly connected to one side of the elastic plate 4. By providing a plurality of anti-slip bumps 5, the friction force at the contact part between the elastic plate 4 and the workpiece is increased, thus ensuring the stability of the workpiece during the clamping process and facilitating processing.

[0036] As Figure 4 shown, a plurality of uniformly arranged rubber strips 6 are fixedly installed on the clamping plate 29. By providing the plurality of rubber strips 6, the friction between the clamping plate 29 and the workpiece is increased, so as to ensure that the workpiece can be stable during the process of the clamping plate 29 clamping the workpiece.

[0037] As Figure 4 shown, limit caps 7 are fixedly connected to both ends of the fixed rod 27. By providing the two limit caps 7, the position of the elastic sleeve 28 is limited. After the elastic sleeve 28 is clamped on the outer wall of the fixed rod 27, it can only rotate around the axis of the fixed rod 27, preventing the elastic sleeve 28 from slipping off the fixed rod 27.

[0038] As Figure 3 shown, a raised strip for restricting the moving direction of the sliding seat 26 is provided on the top of the mounting seat 21. By providing the raised strip, the sliding of the sliding seat 26 on the top of the mounting seat 21 is restricted, making the sliding of the sliding seat 26 more stable.

[0039] As Figure 1 and Figure 2 shown, a support bracket for supporting the reduction motor 22 is provided on one side of the mounting seat 21. By providing the support bracket to support the reduction motor 22, it is avoided that the output end of the reduction motor 22 is damaged due to the downward pulling force caused by its own weight.

[0040] In the technical solution provided by the present utility model, when clamping and fixing a rod-shaped part, first, according to the length of the part, the servo motor 31 is started to drive the bidirectional screw 32 to rotate. During the rotation of the bidirectional screw 32, the two threaded seats 33 are driven to move synchronously, thereby driving the mounting seat 21 to move synchronously. The workpiece is placed between the clamping plates 29. The reduction motor 22 is started to drive the connection disk 23 to rotate. The connection disk 23 drives the connection cap 24 to rotate. The connection cap 24 drives one end of the connecting rod 25 to rotate. Therefore, the other end of the connecting rod 25 drives the sliding seat 26 to slide on the mounting seat 21. The two sliding seats 26 approach synchronously. When the clamping plate 29 contacts the outer wall of the workpiece, according to the curvature of the outer wall of the workpiece, the clamping plate 29 undergoes slight deformation and drives the elastic sleeve 28 to rotate on the fixed rod 27. The clamping plate 29 that can adjust the angle clamps and fixes the rod-shaped workpiece.

[0041] The present utility model covers any substitutions, modifications, equivalent methods and solutions made within the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without the description of these details.

[0042] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A diesel engine rod-shaped parts processing fixture, comprising a base (1), characterized in that: Two clamping mechanisms (2) are arranged on the top of the base (1). The clamping mechanisms (2) include a mounting seat (21) slidably connected to the top of the base (1). A reduction motor (22) is fixedly mounted on one side of the mounting seat (21). The output end of the reduction motor (22) is fixedly connected to a connection disk (23). Two symmetrically arranged connection caps (24) are fixedly connected to the connection disk (23). One side of the connection cap (24) is rotatably connected to a connection rod (25). The top of the mounting seat (21) is slidably connected to a sliding seat (26). One side of the sliding seat (26) is rotatably connected to one side of the connection rod (25). One side of the sliding seat (26) is fixedly connected to a fixing rod (27). An elastic sleeve (28) is clamped on the outer wall of the fixing rod (27). One side of the elastic sleeve (28) is fixedly connected to a clamping plate (29).

2. The diesel engine rod-shaped parts processing fixture according to claim 1, characterized in that: An adjusting mechanism (3) is arranged inside the base (1), the adjusting mechanism (3) comprising a servo motor (31) fixedly connected to one side of the base (1), the output end of the servo motor (31) being fixedly connected to a bidirectional screw (32), both ends of the bidirectional screw (32) being rotatably connected to the inside of the base (1), the outer wall of the bidirectional screw (32) being threadedly connected to two threaded seats (33), the top of the threaded seat (33) being fixedly connected to the bottom of the mounting seat (21).

3. The diesel engine rod-shaped parts processing fixture according to claim 1, characterized in that: The top and bottom of the clamping plate (29) are both fixedly connected to an elastic plate (4).

4. The diesel engine rod-shaped parts processing fixture according to claim 3, characterized in that: A plurality of evenly arranged anti-slip convex points (5) are fixedly connected to one side of the elastic plate (4).

5. The diesel engine rod-shaped parts processing fixture according to claim 1, characterized in that: A plurality of evenly arranged rubber strips (6) are fixedly mounted on the clamping plate (29).

6. The diesel engine rod-shaped parts processing fixture according to claim 1, characterized in that: Both ends of the fixing rod (27) are fixedly connected to the limiting caps (7).

7. The diesel engine rod-shaped parts processing fixture according to claim 1, characterized in that: A raised strip is provided on the top of the mounting seat (21) for limiting the moving direction of the sliding seat (26).

8. The diesel engine rod-shaped parts processing fixture according to claim 1, characterized in that: A support bracket for supporting the reduction motor (22) is provided on one side of the mounting seat (21).

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