Rapid clamping jig for special-shaped circular shaft part

Abstract

The utility model discloses a special-shaped circular shaft part fast clamping jig which comprises a bottom plate and a cover plate, the bottom plate comprises a clamping part and a positioning backup plate, a plurality of lower circular grooves are formed in the clamping part and evenly formed in the length direction of the clamping part, a plurality of upper circular grooves are formed in the cover plate, and the positioning backup plate is arranged on the cover plate. The lower circular grooves are evenly formed in the length direction of the cover plate, the cover plate can be arranged on the bottom plate in a matched and covering mode and is limited and fixed through connecting pieces, and the upper circular grooves and the lower circular grooves are correspondingly connected to form limiting grooves capable of containing workpieces. The positioning backup plate is located on the side, in the axis direction of the lower circular groove, of the clamping part, and one side face of the positioning backup plate abuts against and makes contact with the end face of the workpiece. By means of profiling positioning of the round bar machined in the working procedure of the round shaft part, the part can be rapidly and accurately clamped, and the clamping time and errors are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping fixtures, in particular to a fast clamping fixture for special-shaped round shaft parts. Background Art

[0002] With the rapid development of modern industry, the demand for high-precision and high-efficiency molds is growing, especially in the automotive, aerospace, electronic products and other industries, the production demand for various parts has shown explosive growth. China's mold industry has completed the transformation from labor-intensive to technology-intensive. The rapid improvement of technology has made China's mold industry more competitive in the international market. With the rapid growth of market demand and the trend of product diversification, mold processing plants are facing unprecedented challenges. The surge in orders has put forward higher requirements for processing efficiency and processing accuracy.

[0003] Among them, for special-shaped circular shaft parts made of POM (polyoxymethylene) material, due to their special shape and material properties, it is often difficult to complete efficient and high-precision processing using existing equipment and fixtures.

[0004] Traditional fixture design is often limited to a specific processing range and shape, and it is difficult to meet the processing needs of special-shaped circular shaft parts. At the same time, due to the huge demand for fixtures, if they are completely dependent on outsourcing, it will not only be expensive, but also have a long purchase cycle, and cannot meet the urgent needs of production.

[0005] Therefore, it is urgent to design a fixture that can be quickly clamped, has strong adaptability and low cost to solve the processing problems of special-shaped circular shaft parts. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a fast clamping fixture for special-shaped circular shaft parts, which improves processing efficiency and processing accuracy, reduces production costs, and meets market demand for high-precision and high-efficiency molds.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a quick clamping fixture for special-shaped circular shaft parts, including a base plate and a cover plate, the base plate includes a clamping part and a positioning support plate, the clamping part is provided with a plurality of lower circular grooves, and the lower circular grooves are evenly opened along the length direction of the clamping part, the cover plate is provided with a plurality of upper circular grooves, and the lower circular grooves are evenly opened along the length direction of the cover plate, the cover plate can be cooperatively covered on the base plate and fixed by a connecting piece, the upper circular groove and the lower circular groove are correspondingly engaged and form a limiting groove that can accommodate a workpiece; the positioning support plate is located on one side of the clamping part along the axial direction of the lower circular groove, and one side surface thereof is pressed and contacted with the end face of the workpiece.

[0008] Preferably, the positioning plate and the clamping portion are connected via a connecting plate, and a clearance groove is provided between the positioning plate and the clamping portion.

[0009] Preferably, the connecting member includes a fixing bolt, first connecting holes are opened on both sides of the cover plate, second connecting holes are opened on both sides of the clamping portion, and the fixing bolt passes through the first connecting hole and is threadedly engaged with the second connecting hole.

[0010] Preferably, the first connecting hole is a countersunk hole, and the height of the fixing bolt is not higher than the top edge of the countersunk hole.

[0011] Preferably, the connecting member includes a positioning pin, and a plurality of pin holes are provided on the cover plate and the clamping portion. The pin holes on the cover plate and the clamping portion are arranged one by one, and the positioning pin is inserted into the corresponding pin holes on the cover plate and the clamping portion.

[0012] Preferably, a plurality of clamping holes are opened on the cover plate in the axial direction of the upper circular groove, and a plurality of the clamping holes are arranged at intervals along the length direction of the cover plate and correspond one to one with the limiting grooves. A clamping piece is detachably installed in the clamping hole, and the bottom end of the clamping piece is pressed against the workpiece.

[0013] Preferably, the clamping member is a clamping bolt.

[0014] Preferably, the top corners on the same side of the cover plate and the bottom plate are both provided with alignment side surfaces, so as to facilitate rapid alignment of the cover plate and the bottom plate when they are covered, avoid misalignment, and further improve the clamping efficiency.

[0015] The technical effect of the utility model is as follows: through the structural setting of the utility model, the round bar profiling positioning of the circular shaft parts is used to achieve fast and accurate clamping of parts, reducing clamping time and error. At the same time, the positioning plate is used to perform end surface processing and positioning of multiple workpieces, eliminating the steps of leveling and edge finding, and directly processing, which not only improves the processing efficiency, but also ensures the stability of processing accuracy; in addition, multiple parts can be clamped at the same time without frequent clamping and positioning, which further improves production efficiency, increases the utilization rate of the machine, and ensures processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure for clamping the processed products.

[0018] Figure 3 It is an explosion diagram of the utility model.

[0019] The main technical features in the figure are marked as follows: 1. Base plate; 11. Clamping part; 12. Positioning support plate; 13. Connecting plate; 14. Clearance groove; 2. Cover plate; 3. Lower circular groove; 4. Upper circular groove; 5. Limiting groove; 6. First connecting hole; 7. Second connecting hole; 8. Pin hole; 9. Pressing hole; 10. Alignment side. DETAILED DESCRIPTION

[0020] The present invention will be further described below through specific implementation modes and accompanying drawings.

[0021] like Figures 1 to 3 As shown, a quick clamping fixture for special-shaped circular shaft parts includes a base plate 1 and a cover plate 2, the base plate 1 includes a clamping portion 11 and a positioning plate 12, the clamping portion 11 and the positioning plate 12 are connected by a connecting plate 13, and the clamping portion 11 and the positioning plate 12 are arranged at intervals, and the end face of the clamping portion 11, the inner side face of the positioning plate 12 and the top face of the connecting plate 13 surround to form a clearance groove 14; a plurality of lower circular grooves 3 are uniformly opened on the clamping portion 11 along the length direction, the lower circular grooves 3 are semicircular grooves, and the bottom surface of the groove is higher than the bottom surface of the groove 14; a plurality of upper circular grooves 4 are uniformly opened on the cover plate 2 along the length direction, the upper circular grooves 4 are semicircular grooves, the cover plate 2 is matched and covered on the base plate 1 and then fixed by a connecting piece, at this time, the upper circular groove 4 and the lower circular groove 3 are correspondingly engaged to form a limiting groove 5 that can accommodate the circular shaft section of the workpiece.

[0022] Specifically, the connecting member includes a fixing bolt and a positioning pin. A first connecting hole 6 is opened on both sides of the cover plate 2, and a second connecting hole 7 is opened on both sides of the clamping part. The fixing bolt passes through the first connecting hole 6 and is threadedly engaged with the second connecting hole 7; wherein, the first connecting hole 6 is a countersunk hole, and the height of the fixing bolt is not higher than the top hole edge of the countersunk hole; a plurality of pin holes 8 are opened on the cover plate 2 and the clamping part, and the pin holes 8 on the cover plate 2 and the clamping part are arranged one by one, and the positioning pin is inserted into the corresponding pin holes 8 of the cover plate 2 and the clamping part 12.

[0023] Furthermore, a plurality of clamping holes 9 are opened on the cover plate 2 along the axial direction of the upper circular groove 4. The clamping holes 9 are arranged at intervals along the length direction of the cover plate 2 and correspond one to one with the limiting grooves 5. A clamping piece is detachably installed in the clamping hole 9, and the bottom end of the clamping piece is pressed against the workpiece; the clamping piece is a clamping bolt.

[0024] Furthermore, the top corners on the same side of the cover plate 2 and the bottom plate 1 are both provided with alignment side surfaces 10 to facilitate quick alignment of the cover plate 2 and the bottom plate 1 .

[0025] The specific implementation process of the utility model is as follows: the round shaft workpieces to be processed are placed one by one in the lower circular groove 3 of the base plate 1, a section of the shaft shoulder is located in the give way groove 14, and the end face is pressed against the positioning plate 12 to realize the axial position positioning, and the other end is the shaft section to be processed, which is exposed outside the lower circular groove 3, and the cover plate 2 is closed on the base plate 1, and the cover plate 2 is pressed after rapid positioning is achieved through the positioning pin and the pin hole 8, and the cover plate 2 and the base plate 1 are locked by the fixing bolts. At this time, the round shaft workpieces can be processed in batches.

[0026] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. The present invention can be used on similar products. Any changes or modifications made by any technician in the field of the present invention are covered by the patent scope of the present invention.

Claims

1. A quick clamping fixture for special-shaped circular shaft parts, characterized by: The invention comprises a bottom plate (1) and a cover plate (2), wherein the bottom plate (1) comprises a clamping portion (11) and a positioning support plate (12), wherein the clamping portion (11) is provided with a plurality of lower circular grooves (3), wherein the lower circular grooves (3) are evenly arranged along the length direction of the clamping portion (11), and the cover plate (2) is provided with a plurality of upper circular grooves (4), wherein the lower circular grooves (3) are evenly arranged along the length direction of the cover plate (2), and the cover plate (2) can be matched to cover the bottom plate (1) and fixed by a connecting member, wherein the upper circular grooves (4) and the lower circular grooves (3) are correspondingly engaged to form a limiting groove (5) capable of accommodating a workpiece; The positioning plate (12) is located on one side of the clamping portion (11) along the axial direction of the lower circular groove (3), and one side surface thereof is in pressing contact with the end surface of the workpiece.

2. According to claim 1, a quick clamping fixture for special-shaped circular shaft parts is characterized in that: The positioning plate (12) and the clamping portion (11) are connected via a connecting plate (13), and a clearance groove (14) is provided between the positioning plate (12) and the clamping portion (11).

3. The quick clamping fixture for special-shaped circular shaft parts according to claim 1 is characterized in that: The connecting member comprises a fixing bolt, first connecting holes (6) are provided on both sides of the cover plate (2), second connecting holes (7) are provided on both sides of the clamping portion, and the fixing bolt passes through the first connecting hole (6) and is threadedly engaged with the second connecting hole (7).

4. The quick clamping fixture for special-shaped circular shaft parts according to claim 3 is characterized in that: The first connecting hole (6) is a countersunk hole, and the height of the fixing bolt is not higher than the top edge of the countersunk hole.

5. A quick clamping fixture for special-shaped circular shaft parts according to claim 1 or 3, characterized in that: The connecting member comprises a positioning pin, and a plurality of pin holes (8) are provided on the cover plate (2) and the clamping part. The pin holes (8) on the cover plate (2) and the clamping part are arranged one by one, and the positioning pin is inserted into the corresponding pin holes (8) on the cover plate (2) and the clamping part.

6. The quick clamping fixture for special-shaped circular shaft parts according to claim 1 is characterized in that: A plurality of clamping holes (9) are provided on the cover plate (2) along the axial direction of the upper circular groove (4). A plurality of the clamping holes (9) are arranged at intervals along the length direction of the cover plate (2) and are arranged one-to-one corresponding to the limiting grooves (5). A clamping piece is detachably installed in the clamping hole (9), and the bottom end of the clamping piece presses against the workpiece.

7. The quick clamping fixture for special-shaped circular shaft parts according to claim 6 is characterized in that: The clamping piece is a clamping bolt.

8. The quick clamping fixture for special-shaped circular shaft parts according to claim 1, characterized in that: The top corners on the same side of the cover plate (2) and the bottom plate (1) are both provided with a counterpoint side surface (10).

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