A fixture for processing parallelism

Abstract

The utility model relates to mechanical clamp technical field discloses a kind of clamps of processing parallelism, comprising: base and briquetting piece.Base, the upper surface of base is equipped with recess for accommodating workpiece to be processed, the bottom surface of recess is positioning datum surface, and the depth of recess is less than the height of workpiece, to make workpiece top end face protrude from recess;Briquetting piece, briquetting piece has the compacting surface compatible with workpiece top end face, compacting surface is used to compact workpiece in recess to limit the displacement of workpiece in processing process.With the briquetting piece that sticks to product shape, accurate positioning and stable clamping of part are realized.Displacement and deformation of part in processing process are effectively reduced, and then parallelism precision of processing part is effectively improved.Meanwhile, the clamp can control parallelism error in very small range, meet high-precision processing demand.When workpiece is semicircular ring product, the clamp for processing parallelism provided by the utility model can clamp workpiece evenly.

Description

Technical Field

[0001] This utility model relates to the field of mechanical fixture technology, specifically a fixture for machining parallelism. Background Technology

[0002] In the field of machining, the parallelism of high-precision parts is often subject to strict requirements. The parallelism accuracy of parts directly affects the performance, stability, and service life of the product. Maintaining parallelism is particularly crucial during the machining of semi-circular ring products.

[0003] Existing fixtures have the following problems when machining semi-circular ring products: 1. Traditional fixtures often cannot accurately determine the position of the semi-circular ring product, leading to positional deviation during machining and affecting parallelism. For example, some fixtures use simple slot positioning, where slight wobble may occur within the slot, resulting in significant parallelism errors after machining. 2. Existing clamping methods may exert uneven pressure on the semi-circular ring product, causing deformation during clamping. Once deformed, parallelism cannot be guaranteed. For example, some fixtures use single-point clamping, resulting in uneven force on the semi-circular ring product, making it difficult to achieve the required parallelism after machining. 3. Most general-purpose fixtures are not specifically designed for the special shape and high-precision parallelism requirements of semi-circular ring products, failing to effectively solve the parallelism problem during machining. This necessitates significant time for debugging and correction during semi-circular ring product machining, reducing production efficiency and increasing production costs.

[0004] Therefore, there is an urgent need for a fixture to solve the above problems in machining parallelism. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a clamp for processing parallelism, so as to solve the problem of products being difficult to clamp.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a fixture for machining parallelism, comprising:

[0007] The base has a groove on its upper surface for accommodating the workpiece to be processed, and the bottom surface of the groove is a positioning reference surface.

[0008] A pressure block having a pressing surface adapted to the top end face of a workpiece, the pressing surface being used to press the workpiece into the groove to limit the displacement of the workpiece during processing.

[0009] As a preferred embodiment of a clamping device for machining parallelism, it further includes a disassembly assembly, wherein the pressure block is movably connected to the base via the disassembly assembly, and the disassembly assembly enables the pressure block to be separated from or joined relative to the base, so as to realize the picking, placing and replacing of workpieces.

[0010] As a preferred embodiment of a clamping device for machining parallelism, the disassembly assembly includes a base block and fasteners. The base block is mounted on one end of the pressure block, and the fasteners are tightened to ensure that the pressure surface of the pressure block tightly presses against the workpiece.

[0011] As a preferred embodiment of a clamping fixture for machining parallelism, the thickness of the pressure block is not greater than the clamping depth of the workpiece, and there is a height difference between the end face of the pressure block away from the workpiece and the top end face of the workpiece.

[0012] As a preferred embodiment of a clamping device for machining parallelism, it further includes an auxiliary component disposed on the base, wherein the clamping direction of the auxiliary component is offset from the clamping direction of the pressure block.

[0013] As a preferred embodiment of a clamping device for machining parallelism, the auxiliary components include a positioning rod, a ball bearing, and an elastic element. The base is provided with a mounting slot, one end of which leads to the groove. The axial direction of the mounting slot is offset from the pressing direction of the pressure block. The ball bearing is rotatably mounted in the mounting slot near the groove. The positioning rod is mounted in the mounting slot along the axial direction of the mounting slot. The elastic element abuts against the end of the positioning rod near the ball bearing and the ball bearing. The positioning rod applies an elastic force toward the ball bearing, causing the ball bearing portion to protrude from the mounting slot and press against the workpiece.

[0014] As a preferred embodiment of a clamping device for machining parallelism, the auxiliary component further includes a guide rod, which is fixedly mounted along the axial direction of the mounting slot to one end of the positioning rod near the ball, and the elastic element is sleeved on the outer periphery of the guide rod.

[0015] As a preferred embodiment of a clamping device for machining parallelism, it further includes a support assembly mounted on the bottom of the base, the support assembly being used to support and elevate the base.

[0016] As a preferred embodiment of a clamp for machining parallelism, the support assembly includes support columns and a base. The base is installed at the bottom of the base, and the support columns are vertically spaced between the lower surface of the base and the upper surface of the base, with both ends connected to the base and the base respectively.

[0017] As a preferred embodiment of a clamping device for machining parallelism, the pressure block is trapezoidal, and the trapezoidal contour of the pressure block is adapted to the trapezoidal edge of the top end face of the workpiece.

[0018] The beneficial effects of this utility model are as follows: By using a clamping block that conforms to the shape of the product, precise positioning and stable clamping of the parts are achieved. This effectively reduces the displacement and deformation of the parts during processing, thereby significantly improving the parallelism accuracy of the processed parts. Simultaneously, this fixture can control the parallelism error within a very small range, meeting the requirements of high-precision processing. When the workpiece is a semi-circular ring, the parallelism clamping fixture provided by this utility model can evenly clamp the workpiece. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a clamp for machining parallelism provided by this utility model;

[0020] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0021] Figure 3 A cross-sectional view of a jig for machining parallelism provided by this utility model;

[0022] Figure 4 An exploded view of a jig for machining parallelism provided by this utility model.

[0023] The following are the labeling elements in the figure:

[0024] 1. Base; 2. Pressing block; 3. Groove;

[0025] 4. Disassemble the components;

[0026] 401. Base block; 402. Fasteners;

[0027] 5. Auxiliary components;

[0028] 501. Positioning rod; 502. Ball bearing; 503. Elastic element; 504. Mounting hole groove; 505. Guide rod;

[0029] 6. Support components; 601. Support column; 602. Base. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0035] In one embodiment of this utility model, such as Figure 1-4 As shown, a jig for machining parallelism is provided, including: a base 1 and a pressure block 2. The base 1 has a groove 3 on its upper surface for accommodating the workpiece to be machined. The bottom surface of the groove 3 is a positioning reference surface, and the depth of the groove 3 is less than the height of the workpiece, so that the top end face of the workpiece protrudes from the groove 3. The pressure block 2 has a clamping surface adapted to the top end face of the workpiece. The clamping surface is used to press the workpiece into the groove 3 to limit the displacement of the workpiece during the machining process.

[0036] The parallelism-machining fixture provided by this utility model achieves precise positioning and stable clamping of parts through a pressure block 2 that conforms to the shape of the product. This effectively reduces displacement and deformation of the parts during processing, thereby significantly improving the parallelism accuracy of the processed parts. Simultaneously, this fixture can control the parallelism error within a very small range, meeting the requirements of high-precision machining. When the workpiece is a semi-circular ring, the parallelism-machining fixture provided by this utility model can evenly clamp the workpiece.

[0037] Preferably, the pressure block 2 is trapezoidal, and the trapezoidal outline of the pressure block 2 is adapted to the trapezoidal edge of the top end face of the workpiece.

[0038] The fixture for processing parallelism also includes a disassembly assembly 4. The pressure block 2 is movably connected to the base 1 through the disassembly assembly 4. The disassembly assembly 4 can separate or connect the pressure block 2 relative to the base 1 to realize the picking, placing and replacing of workpieces.

[0039] Specifically, the disassembly assembly 4 includes a base block 401 and fasteners 402. The base block 401 is installed at one end of the pressure block 2, and the fasteners 402 (such as screws) are tightened to ensure that the pressure surface of the pressure block 2 tightly presses the workpiece against it. By tightening the screws, the fixture can easily perform functions such as positioning and clamping, reducing the technical requirements and labor intensity for operators and improving production efficiency. The fixture structure allows for easy disassembly and replacement of each component, facilitating maintenance and reducing maintenance costs, which is beneficial for large-scale production and application.

[0040] Preferably, the thickness of the clamping block 2 is not greater than the clamping depth of the workpiece, and there is a height difference between the end face of the clamping block 2 facing away from the workpiece and the top end face of the workpiece. This avoids interference between the clamping block 2 and the machining tool, provides sufficient space for machining operations, and ensures that the clamping force is concentrated on the workpiece, further guaranteeing clamping stability.

[0041] The clamping fixture for processing parallelism also includes an auxiliary component 5, which is disposed on the base 1. The clamping direction of the auxiliary component 5 is offset from the clamping direction of the pressure block 2.

[0042] Specifically, the auxiliary component 5 includes a positioning rod 501, a ball bearing 502, and an elastic element 503. The base 1 has a mounting slot 504, one end of which leads to the groove 3, and its axial direction is offset from the pressing direction of the pressure block 2. The ball bearing 502 is rotatably mounted in the mounting slot 504 near the groove 3; the positioning rod 501 is mounted in the mounting slot 504 along its axial direction; the elastic element 503 abuts against the end of the positioning rod 501 near the ball bearing 502 and the ball bearing 502. The positioning rod 501 applies an elastic force towards the ball bearing 502 through the elastic element 503, causing the ball bearing 502 to partially protrude from the mounting slot 504 and press against the workpiece.

[0043] Preferably, the auxiliary component 5 further includes a guide rod 505, which is fixedly installed along the axial direction of the mounting hole groove 504 at one end of the positioning rod 501 near the ball 502, and the elastic element 503 is sleeved on the outer periphery of the guide rod 505.

[0044] In this embodiment, the base 1 is clamped by adding a ball bearing 502, the rear end of which has a spring-connected thread. The rear thread of the ball bearing 502 is locked and fixed to the positioning rod 501, so that the ball bearing 502 cannot move arbitrarily and can only follow the extension and contraction of the spring; the front end of the ball bearing 502 has a small hole in the base 1 to limit the excessive extension of the ball bearing 502 and the spring, which is the junction hole of the mounting slot 504 and the groove 3. The ball bearing 502 can only extend a small part out of the mounting slot 504 and fix the product. The purpose is to prevent the product from being displaced due to slight shaking during processing, which would lead to poor parallelism of the product.

[0045] The base 1 is made of 45# steel, one of the most widely used steels in machinery manufacturing. It has good machinability, good comprehensive mechanical properties, and certain strength, plasticity, and wear resistance. The pressure block 2 is made of aluminum, which has the characteristics of low density, strong corrosion resistance, adjustable mechanical properties, good electrical and thermal conductivity, and excellent machinability. The bosses at both ends of the pressure block 2 are designed according to the shape of the product, which can tightly fit the grooves 3 of the product to prevent the product from shifting during processing and causing poor parallelism.

[0046] A proper clamping method prevents product deformation due to uneven force during processing, thus ensuring product quality and dimensional accuracy. This fixture can quickly and accurately position and clamp semi-circular ring products, reducing pre-processing debugging time and scrap rate during processing, improving production efficiency, and lowering production costs.

[0047] In other embodiments, the ball bearing 502 can be set separately to prevent errors caused by poor spring elasticity or deformation of the ball bearing 502. Alternatively, the spring portion of the ball bearing 502 can be replaced instead of the entire fixture, thereby saving material costs. This achieves the goal of saving both material and labor costs while improving the parallelism of the product to meet high requirements.

[0048] The fixture for machining parallelism also includes a support assembly 6, which is installed at the bottom of the base 1 and is used to support and elevate the base 1.

[0049] Specifically, the support assembly 6 includes support columns 601 and a base 602. The base 602 is installed at the bottom of the base 1, and the support columns 601 are arranged vertically between the lower surface of the base 1 and the upper surface of the base 602, with both ends connected to the base 1 and the base 602 respectively.

[0050] The height of the base 1 can be flexibly adjusted to adapt to the working space of different processing equipment, while enhancing the overall structural stability and providing a solid support foundation for high-precision processing.

[0051] The steps for using this fixture are as follows:

[0052] 1. Place the product to be processed into the groove 3 of base 1;

[0053] 2. Align and press the pressure block 2 into the groove 3 of the product, and then tighten the screws;

[0054] 3. Place the base 1 of the product that is locked and fixed into the processing machine tool and process the parallelism of the product.

[0055] 4. After processing is completed, take out the product and measure its dimensions.

[0056] This processing method is simpler, faster, and has less error than traditional processing methods. Furthermore, because it is designed based on the product's shape, it minimizes the possibility of poor parallelism.

[0057] The following steps have been updated, as follows:

[0058] Compared to the above structure, this utility model can also be specifically designed according to the special shape of the product, and is especially suitable for product processing scenarios with high requirements for parallelism.

[0059] 1. Place the product to be processed into the groove 3 of the base 1, align and press the pressure block 2 into the groove 3 of the product, and then tighten the screws.

[0060] 2. Install the fixture on the machine tool worktable and fix it with positioning keys and bolts to ensure that the relative position of the fixture and the milling machine worktable is accurate;

[0061] Third, use high-precision measuring instruments, such as dial indicators and electronic levels, to test and adjust the positioning accuracy and levelness of the fixture. Adjust the position and levelness of the fixture to meet the machining requirements;

[0062] IV. After clamping and debugging, start the machine tool and process the product according to the predetermined processing technology. During the processing, monitor the clamping force and product position changes in real time. If any abnormality is found, stop the machine immediately for adjustment.

[0063] 5. After processing is complete, loosen the clamping mechanism and remove the processed product. Clean and maintain the fixture to prepare for the next processing.

[0064] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A fixture for machining parallelism, characterized in that, include: The base has a groove on its upper surface for accommodating the workpiece to be processed, and the bottom surface of the groove is a positioning reference surface. A pressure block having a pressing surface adapted to the top end face of a workpiece, the pressing surface being used to press the workpiece into the groove to limit the displacement of the workpiece during processing.

2. The fixture for machining parallelism according to claim 1, characterized in that, It also includes a disassembly assembly, through which the pressure block is movably connected to the base. The disassembly assembly enables the pressure block to be separated from or joined relative to the base, so as to realize the picking, placing and replacing of workpieces.

3. A fixture for machining parallelism according to claim 2, characterized in that, The disassembly assembly includes a base block and fasteners. The base block is installed at one end of the pressure block, and the fasteners are tightened to make the pressing surface of the pressure block tightly press against the workpiece.

4. A jig for machining parallelism according to any one of claims 1-3, characterized in that, The thickness of the pressure block is not greater than the pressing depth of the workpiece, and there is a height difference between the end face of the pressure block away from the workpiece and the top end face of the workpiece.

5. A fixture for machining parallelism according to any one of claims 1-3, characterized in that, It also includes an auxiliary component disposed on the base, wherein the pressing direction of the auxiliary component is offset from the pressing direction of the pressing block.

6. A fixture for machining parallelism according to claim 5, characterized in that, The auxiliary components include a positioning rod, a ball bearing, and an elastic element. The base has a mounting slot, one end of which leads to the groove. The axial direction of the mounting slot is offset from the pressing direction of the pressure block. The ball bearing is rotatably mounted in the mounting slot near the groove. The positioning rod is mounted in the mounting slot along the axial direction. The elastic element abuts against the end of the positioning rod near the ball bearing and the ball bearing. The positioning rod applies an elastic force toward the ball bearing, causing the ball bearing portion to protrude from the mounting slot and press against the workpiece.

7. A fixture for machining parallelism according to claim 6, characterized in that, The auxiliary component also includes a guide rod, which is fixedly installed along the axial direction of the mounting hole groove at one end of the positioning rod near the ball, and the elastic element is sleeved on the outer periphery of the guide rod.

8. A jig for machining parallelism according to any one of claims 1-3 or 7, characterized in that, It also includes a support assembly installed at the bottom of the base, the support assembly being used to support and elevate the base.

9. A fixture for machining parallelism according to claim 8, characterized in that, The support assembly includes support columns and a base. The base is installed at the bottom of the base. The support columns are arranged vertically between the lower surface of the base and the upper surface of the base, and both ends are connected to the base and the base, respectively.

10. A jig for machining parallelism according to any one of claims 1-3, 6, 7, or 9, characterized in that, The pressure block is trapezoidal, and the trapezoidal outline of the pressure block is adapted to the trapezoidal edge of the top end face of the workpiece.

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