Piston skirt inner distance machining structure

Abstract

The utility model relates to the technical field of machining, and discloses a piston skirt inner distance machining structure which comprises a bent plate, a positioning block is connected in the bent plate in a sliding mode, a first bolt is connected in the positioning block in a threaded mode, a workpiece abuts against the right side of the positioning block, and the left side of the workpiece abuts against the right side of the positioning block. A pressing block is slidably connected to the interior of the workpiece, a second bolt is in threaded connection to the interior of the pressing block, a supporting column is fixedly connected to the top of the bent plate, the exterior of the first bolt is in threaded connection to the interior of the bent plate, and the exterior of the second bolt is in threaded connection to the interior of the workpiece. According to the utility model, the workpiece is fixed on the positioning block by matching the bolt II with the pressing block, and meanwhile, under the support of the support column, the operation is simple, the repeated positioning precision is high, all inner distance surfaces of the part are processed by one-time clamping, the working procedures and the clamping times are reduced, the efficiency and the precision are improved, and the product processing quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of processing technology, and in particular to a piston skirt inner distance processing structure. Background Technology

[0002] The piston is one of the core components of an engine, and the piston skirt, as an important part of the piston, plays an indispensable role. The piston skirt is responsible for guiding the piston to reciprocate in the cylinder and bearing the side pressure from the cylinder wall. Since the contact between the piston skirt and the cylinder wall directly affects the engine's operating stability, the processing quality of the piston skirt is crucial. Any slight deviation in size may lead to a decrease in engine performance and even affect the engine's service life and safety.

[0003] During the manufacturing process of piston skirts, it is essential to strictly control their dimensional accuracy and geometric tolerances. The outer diameter of the piston skirt must maintain strict tolerances to ensure a reasonable clearance with the cylinder wall. If the clearance is too large, it will lead to increased oil consumption and unnecessary wear. If the clearance is too small, it will cause excessive friction between the piston and the cylinder wall, which may result in jamming, excessive wear, or engine failure in severe cases. The geometric tolerances of the piston skirt must be precisely controlled to ensure the stability of the piston during its movement within the cylinder. If the geometric tolerances are not properly controlled, uneven wear or vibration may occur during the piston's movement, thereby affecting the engine's operating accuracy.

[0004] The machining accuracy of the piston skirt directly affects the engine's performance and service life. Precisely controlling the machining dimensions, geometric tolerances, and surface quality is key to ensuring the engine's efficient and safe operation. However, traditional pistons involve multi-stage machining, and repeated positioning makes it impossible to guarantee geometric tolerances and results in long auxiliary times. Therefore, a piston skirt inner distance machining structure is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a piston skirt inner distance machining structure, which aims to improve the problems of traditional pistons being divided into multi-sequence machining, repeated positioning making it impossible to guarantee dimensional and positional tolerances, and long auxiliary time.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a piston skirt inner distance processing structure, including a bent plate, a positioning block slidably connected inside the bent plate, a bolt threadedly connected inside the positioning block, a workpiece abutting on the right side of the positioning block, abutting between the left side of the workpiece and the right side of the positioning block, a pressure block slidably connected inside the workpiece, a bolt threadedly connected inside the pressure block, and a support column fixedly connected to the top of the bent plate.

[0007] As a further description of the above technical solution:

[0008] The bolt is externally threaded and connected inside the bent plate.

[0009] As a further description of the above technical solution:

[0010] The bolt has an external thread that connects to the inside of the workpiece.

[0011] As a further description of the above technical solution:

[0012] The top of the support column and the bottom of the workpiece abut against each other.

[0013] As a further description of the above technical solution:

[0014] The bent plate is in the shape of an inverted T.

[0015] As a further description of the above technical solution:

[0016] The head end face of the workpiece group and the positioning surfaces of each small cavity are completely attached to the right side of the positioning block.

[0017] As a further description of the above technical solution:

[0018] The second bolt is externally sleeved on the inside of the bent plate.

[0019] As a further description of the above technical solution:

[0020] The pressure block is sleeved on the inside of the positioning block.

[0021] This utility model has the following beneficial effects:

[0022] In this invention, the workpiece is fixed on the positioning block by two bolts and a clamping block. With the support of the support column, the operation is simple, the repeatability is high, and the part can complete the machining of all inner distance surfaces in one clamping. This reduces the number of processes and clamping times, improves efficiency and accuracy, and ensures the quality of product processing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a piston skirt inner distance processing structure proposed in this utility model.

[0024] Legend:

[0025] 1. Bending plate; 2. Positioning block; 3. Bolt 1; 4. Pressure block; 5. Bolt 2; 6. Workpiece; 7. Support column. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 This utility model provides an embodiment of a piston skirt inner distance processing structure, including a bent plate 1, a positioning block 2 slidably connected inside the bent plate 1, a bolt 3 threadedly connected inside the positioning block 2, a workpiece 6 abutting against the right side of the positioning block 2, and abutting between the left side of the workpiece 6 and the right side of the positioning block 2. A pressure block 4 slidably connected inside the workpiece 6, a bolt 5 threadedly connected inside the pressure block 4, a support column 7 fixedly connected to the top of the bent plate 1, the support column 7 being used to support the entire device and keep it stable, the positioning block 2 being for fitting with the workpiece 6 to keep the workpiece 6 stable, the bolt 3 being used to fix the positioning block 2 onto the bent plate 1, the workpiece 6 being the piston to be processed, the pressure block 4 being used to press the workpiece 6 tightly against the positioning block 2, and the bolt 5 being used to fix the positioning block 2 onto the bent plate 1. 5 is used to fix the pressure block 4 onto the positioning block 2. The support column 7 is used to support the workpiece 6. Bolt 1 3 is externally threaded into the inside of the bending plate 1 to keep the positioning block 2 stable and prevent it from shaking. Bolt 2 5 is externally threaded into the inside of the workpiece 6 to keep the workpiece 6 tightly attached to the positioning block 2 and prevent it from shaking, which is convenient for processing. The top of the support column 7 and the bottom of the workpiece 6 abut against each other to keep the workpiece 6 stable. The bending plate 1 is inverted T-shaped to keep the whole device stable. The head end face of the workpiece 6 and the positioning surfaces of the small cavity are completely attached to the right side of the positioning block 2 to prevent the workpiece 6 from moving randomly. Bolt 2 5 is externally sleeved on the inside of the bending plate 1 and the pressure block 4 is externally sleeved on the inside of the positioning block 2, so that the whole device cooperates with each other and facilitates the processing of the workpiece 6.

[0028] Working principle: When using this device to process workpiece 6, first fix the bending plate 1 on the machine tool worktable, then use a wrench and bolt 3 to fix the positioning block 2 on the bending plate 1. Next, completely fit the piston group head end face and the positioning surfaces of the small cavity of workpiece 6 onto the right side of the positioning block 2. Then, put the pressure block 4 into workpiece 6, and use a wrench and bolt 5 to tighten the workpiece 6 completely and fix it on the positioning block 2. With the support of the support column 7, workpiece 6 is kept stable. At this time, processing can begin. The operation is simple, the repeatability and positioning accuracy are high, and the processing accuracy and quality of workpiece 6 are effectively guaranteed.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A piston skirt inter-bearing machining structure comprising a bending plate (1), characterized in that: The bending plate (1) is internally slidably connected with a positioning block (2), the positioning block (2) is internally threadedly connected with a bolt one (3), the positioning block (2) is right abutted with a workpiece (6), the workpiece (6) is left abutted with the positioning block (2), the workpiece (6) is internally slidably connected with a pressing block (4), the pressing block (4) is internally threadedly connected with a bolt two (5), the bending plate (1) is top fixedly connected with a support column (7).

2. A piston skirt interclearance machining structure according to claim 1, characterized in that: The bolt one (3) is externally threadedly connected in the bending plate (1).

3. A piston skirt interclearance machining structure according to claim 1, characterized in that: The bolt two (5) is externally threadedly connected in the workpiece (6).

4. A piston skirt interclearance machining structure according to claim 1, characterized in that: The support column (7) is abutted between the top and the workpiece (6) bottom.

5. A piston skirt interland processing structure as in claim 1, wherein: The bending plate (1) is inverted T-shaped.

6. A piston skirt interclearance machining structure according to claim 1, characterized in that: The workpiece (6) group head end face, small cavity each positioning surface is completely attached to the right side of the positioning block (2).

7. A piston skirt interland processing structure as described in claim 1 wherein: The bolt two (5) is externally sleeved in the bending plate (1).

8. A piston skirt interland processing structure as described in claim 1 wherein: The pressing block (4) is externally sleeved in the positioning block (2).

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