Pressing mechanism for machining

Abstract

The utility model discloses a kind of press-fitting mechanisms for machining, including fixture plate and press-fitting plate feature is that locking rod and limit support rod are vertically arranged on fixture plate, opposite two ends of press-fitting plate are respectively press end and support end, through hole that passes through is set on press-fitting plate, the upper end of locking rod passes through through hole and extends upwards, the upper end of limit support rod is supported and set on the lower end surface of support end, elastic support mechanism is set on locking rod, elastic support mechanism is set between fixture plate and press-fitting plate, lower press locking piece is set on press-fitting plate, lower press locking piece is adjustably set on the upper end of locking rod, limit support rod is adjustably set on fixture plate. Advantage is simple structure, with fast response, low-cost transformation, and reliable press-fitting can be realized.

Description

Technical Field

[0001] This utility model relates to the field of workpiece machining, and in particular to a press-fitting mechanism for machining. Background Technology

[0002] In the prototyping process of machining some parts, it is often necessary to add machining or assembly features according to temporary requirements. This requires clamping at the corresponding position of the workpiece. Clamping requires the use of lower support and upper press-fitting. Currently, the upper press-fitting is conventionally achieved by using a hydraulic cylinder to drive the press-fitting plate. This method requires a dedicated hydraulic circuit system, the fabrication of a high-precision fixture plate, and the completion of overall assembly and debugging. Although hydraulic cylinder clamping has advantages such as stable output and precise control, it also has obvious shortcomings: First, the hydraulic circuit design and manufacturing cycle is long, making it difficult to quickly respond to frequent changes during the prototyping stage; second, the fixture structure is complex and the modification cost is high, especially for single-piece or small-batch prototyping, which is not economical; in addition, the hydraulic cylinder system occupies a large space, has limited ability to avoid obstacles in the machining area, and is prone to interference with the tool path. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a machining press-fitting mechanism that is simple in structure, has fast response, low cost of modification and reliable press-fitting performance, so as to adapt to the dynamic changes in the machining trial production stage.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A pressing mechanism for machining includes a fixture plate and a pressing plate. A locking rod and a limiting support rod are vertically mounted on the fixture plate. The pressing plate has a pressing end and a supporting end at opposite ends. A through hole is provided on the pressing plate, connecting the pressing end and the supporting end. The upper end of the locking rod extends upward through the through hole. The upper end of the limiting support rod is supported on the lower end face of the supporting end. An elastic support mechanism is provided between the fixture plate and the pressing plate. A downward locking element is provided on the pressing plate, adjustable vertically on the upper end of the locking rod. The limiting support rod is also adjustable vertically on the fixture plate.

[0005] The pressing locking component is a locking nut, and the upper end of the locking rod is provided with an external thread that mates with the locking nut. The pressing locking component is screwed onto the upper end of the locking rod.

[0006] A washer is fitted onto the locking rod, and the washer is positioned between the elastic support mechanism and the press plate.

[0007] The elastic support mechanism is a spring, which is sleeved on the locking rod.

[0008] The through hole is a waist-shaped hole, and the length direction of the waist-shaped hole is from the support end to the pressing end.

[0009] The lower end face of the press plate is recessed upward to form a limiting groove. The direction from the support end to the press end is the length direction of the limiting groove. The upper end of the limiting support rod matches the width of the limiting groove and is embedded in the limiting groove.

[0010] The limiting groove is open at the support end.

[0011] The clamp plate is provided with an adjusting nut and an adjusting hole that runs vertically through the clamp at the installation position corresponding to the limiting support rod. The adjusting nut is coaxial with the adjusting hole. The lower part of the limiting support rod has an external thread that mates with the adjusting nut. The lower end of the limiting support rod is screwed to the adjusting nut. The adjusting hole allows the lower end of the limiting support rod to extend downward.

[0012] The clamp plate is provided with a mounting nut and a through-hole at the mounting position of the locking rod. The mounting nut and the through-hole are coaxial. The lower part of the locking rod has an external thread that mates with the mounting nut. The lower end of the locking rod is screwed to the mounting nut. The through-hole allows the lower end of the locking rod to extend downward.

[0013] Compared with the prior art, the advantages of this utility model are: (1) Simple structure and low cost: The mechanical combination structure of locking rod, limit support rod and press plate eliminates the complex oil circuit system, special oil cylinder and high precision fixture plate, which greatly reduces the manufacturing and modification costs, and is especially suitable for single piece or small batch trial production scenarios. (2) Fast response and strong adaptability: Through the elastic support mechanism, adjustable limit support rod and pressing locking part, the pressing height can be flexibly adjusted, which can quickly adapt to changes in workpiece size and temporary changes in processing position, and significantly shorten the process preparation cycle; (3) Small space occupation and good avoidance: The compact structure reduces the occupation of the processing area, effectively avoids interference with the tool path, and improves processing safety and operation convenience; (4) Stable and reliable clamping: The elastic support mechanism provides continuous and stable downward pressure. Combined with the rigid support of the limit support rod and the fastening effect of the locking rod, it ensures the uniformity and reliability of the pressing process and meets the processing accuracy requirements. (5) High versatility: This mechanism can be directly adapted to various fixture plate layouts, has good versatility and scalability, and is suitable for machining trial production environments with multiple varieties and small batches. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a cross-sectional view of the pressure plate in this utility model. Figure 4 This is a three-dimensional structural diagram of the present invention in specific use. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] As shown in the figure, a pressing mechanism for machining includes a fixture plate 1 and a pressing plate 2. A locking rod 3 and a limiting support rod 4 are erected on the fixture plate 1. The two opposite ends of the pressing plate 2 are a pressing end 21 and a supporting end 22, respectively. A through hole 23 is provided on the pressing plate 2, which is located between the pressing end 21 and the supporting end 22. The upper end of the locking rod 3 extends upward through the through hole 23. The upper end of the limiting support rod 4 is supported on the lower end face of the supporting end 22. An elastic support mechanism 5 is provided between the fixture plate 1 and the pressing plate 2. A downward locking member 6 is provided on the pressing plate 2. The downward locking member 6 is adjustable up and down on the upper end of the locking rod 3. The limiting support rod 4 is adjustable up and down on the fixture plate 1.

[0017] In this specific embodiment, the pressing locking element 6 is a locking nut, and the upper end of the locking rod 3 is provided with an external thread that mates with the locking nut. The pressing locking element 6 is screwed onto the upper end of the locking rod 3. The structure is simple and the cost is low. Reliable locking or quick loosening can be achieved by rotating the locking nut, making the operation very simple and efficient.

[0018] In this specific embodiment, a washer 70 is fitted onto the locking rod 3, and the washer 70 is disposed between the elastic support mechanism 5 and the pressure plate 2. The washer 70 is used to increase the force-bearing area, so that the pressure of the locking nut is evenly distributed on the elastic support mechanism 5 and the pressure plate 2, preventing excessive local stress from damaging the pressure plate 2 or the spring, and improving the stability and durability of the mechanism.

[0019] In this specific embodiment, the elastic support mechanism 5 is a spring, which is sleeved on the locking rod 3. Springs are low-cost and can provide continuous and stable elastic preload.

[0020] In this specific embodiment, the through hole 23 is an oblong hole, and the length direction of the oblong hole is from the support end 22 to the pressing end 21. This allows for fine adjustment of the pressing position, enhances the adaptability of the mechanism to different pressing point positions, increases the installation fault tolerance, and improves versatility.

[0021] In this specific embodiment, a limiting groove 24 is recessed upward on the lower end surface of the pressing plate 2. The length direction of the limiting groove 24 is from the supporting end 22 to the pressing end 21. The upper end of the limiting support rod 4 matches the width of the limiting groove 24 and is embedded in the limiting groove 24. The end of the limiting support rod 4 is embedded in the limiting groove 24, which can effectively prevent the pressing plate 2 from moving or twisting horizontally when under pressure, thus ensuring the stability and reliability of the pressing process.

[0022] In this specific embodiment, the limiting groove 24 is open at the support end 22. This allows the pressure plate 2 to be easily installed or removed from the limiting support rod 4 from the side without needing to be perfectly aligned with its top, simplifying the operation process and improving clamping efficiency.

[0023] In this specific embodiment, an adjusting nut 7 and an adjusting hole 8 extending vertically are provided on the fixture plate 1 at the installation position corresponding to the limiting support rod 4. The adjusting nut 7 and the adjusting hole 8 are coaxial. The lower section of the limiting support rod 4 has an external thread that mates with the adjusting nut 7. The lower end of the limiting support rod 4 is screwed to the adjusting nut 7. The adjusting hole 8 allows the lower end of the limiting support rod 4 to extend downwards. By rotating the limiting support rod 4, the height of its top end can be easily and accurately adjusted, thereby flexibly adapting to different working heights and achieving precise control over the levelness and pressing angle of the pressing plate 2.

[0024] In this specific embodiment, a mounting nut 9 and a through-hole 10 are provided on the fixture plate 1 at the mounting position corresponding to the locking rod 3. The mounting nut 9 and the through-hole 10 are coaxial. The lower section of the locking rod 3 has an external thread that mates with the mounting nut 9. The lower end of the locking rod 3 is screwed to the mounting nut 9, and the through-hole 10 allows the lower end of the locking rod 3 to extend downwards. This provides a stable and reliable mounting base for the locking rod 3, while its detachable connection facilitates the assembly, maintenance, and component replacement of the entire mechanism. The design of the through-hole 10 allows the locking rod 3 to extend downwards, providing space for mounting larger workpieces and enhancing the versatility of the mechanism.

[0025] In practical use, firstly, according to the height of workpiece A and the position to be pressed, adjust the height of the limiting support rod 4 and the locking rod 3 on the fixture plate respectively. Rotate the limiting support rod 4 so that its top reaches the predetermined height to support the support end 22 of the pressing plate 2. Rotate the locking rod 3 so that its top has sufficient length for final locking. Next, position workpiece A at the designated position on the fixture plate 1, with the lower part of the workpiece supported by the positioning mechanism B set on the fixture plate 1. Install the pressing plate 2 onto the limiting support rod 4 and the locking rod 3. After installation, tighten the locking nut on the locking rod 3. Press down on the pressing end 21 of the pressing plate 2 to make it... Pressing against the surface of workpiece A, during this process, the spring on the locking rod 3 is compressed, generating a continuous elastic reaction force. This elastic force acts on the pressure plate 2 through the washer 70, thereby providing a preliminary, flexible pre-clamping force, allowing the pressure plate 2 to pre-fit against workpiece A and compensate for the unevenness of the workpiece surface. After the pressure plate 2 presses against workpiece A under the force of the spring, the locking nut is tightened downwards. Tightening the locking nut generates a downward mechanical pressure, which acts directly on the pressure plate through the washer 70, overcoming the elastic force of the spring, and finally achieving a firm press of the pressure plate 2 against workpiece A, forming a rigid and reliable locking state.

Claims

1. A pressing mechanism for machining, comprising a clamping plate and a pressing plate, characterized in that... The clamping plate is upright with a locking rod and a limiting support rod. The two opposite ends of the pressing plate are a pressing end and a supporting end, respectively. The pressing plate is provided with a through hole that runs vertically between the pressing end and the supporting end. The upper end of the locking rod extends upward through the through hole. The upper end of the limiting support rod is supported on the lower end face of the supporting end. An elastic support mechanism is provided between the clamping plate and the pressing plate. The pressing plate is provided with a downward locking member, which is adjustable vertically on the upper end of the locking rod. The limiting support rod is adjustable vertically on the clamping plate.

2. The pressing mechanism for machining as described in claim 1, characterized in that... The pressing locking component is a locking nut, and the upper end of the locking rod is provided with an external thread that mates with the locking nut. The pressing locking component is screwed onto the upper end of the locking rod.

3. The pressing mechanism for machining as described in claim 1, characterized in that... A washer is fitted onto the locking rod, and the washer is positioned between the elastic support mechanism and the press plate.

4. A pressing mechanism for machining as described in claim 1 or 3, characterized in that... The elastic support mechanism is a spring, which is sleeved on the locking rod.

5. A pressing mechanism for machining as described in claim 1, characterized in that... The through hole is a waist-shaped hole, and the length direction of the waist-shaped hole is from the support end to the pressing end.

6. The pressing mechanism for machining as described in claim 1, characterized in that... The lower end face of the press plate is recessed upward to form a limiting groove. The direction from the support end to the press end is the length direction of the limiting groove. The upper end of the limiting support rod matches the width of the limiting groove and is embedded in the limiting groove.

7. A pressing mechanism for machining as described in claim 6, characterized in that... The limiting groove is open at the support end.

8. The pressing mechanism for machining as described in claim 1, characterized in that... The clamp plate is provided with an adjusting nut and an adjusting hole that runs vertically through the clamp at the installation position corresponding to the limiting support rod. The adjusting nut is coaxial with the adjusting hole. The lower part of the limiting support rod has an external thread that mates with the adjusting nut. The lower end of the limiting support rod is screwed to the adjusting nut. The adjusting hole allows the lower end of the limiting support rod to extend downward.

9. A pressing mechanism for machining as described in claim 1, characterized in that... The clamp plate is provided with a mounting nut and a through-hole at the mounting position of the locking rod. The mounting nut and the through-hole are coaxial. The lower part of the locking rod has an external thread that mates with the mounting nut. The lower end of the locking rod is screwed to the mounting nut. The through-hole allows the lower end of the locking rod to extend downward.

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