A fixture for parts production

Abstract

This utility model discloses a fixture for parts manufacturing, including a fixed platform, a push plate, and a quick clamp. A limiting boss is provided at one end of the upper surface of the fixed platform, and the quick clamp is fixed at the other end. The push plate is located above the fixed platform, and the studs of the quick clamp are threadedly connected to the push plate. During locking, the push plate presses the side of the parts against the limiting boss, while the boss structures of the fixed platform and the push plate simultaneously position the internal components of the parts. This fixture can complete clamping and positioning in one operation, significantly improving assembly efficiency and reducing assembly defect rates. This utility model has a simple structure and quick operation, and is suitable for the production of parts with irregular shapes or special clamping requirements.

Description

Technical Field

[0001] This utility model relates to the field of fixtures and tooling technology for parts production, and in particular to a fixture and tooling for parts production. Background Technology

[0002] In the assembly of parts, general-purpose clamps such as vises are commonly used for fixing. However, for parts with irregular shapes or special clamping requirements, general-purpose clamps cannot provide stable and accurate positioning, often causing parts to rotate or wobble during assembly, resulting in low assembly efficiency and a high risk of assembly defects. Current technology lacks a dedicated tooling that is simple in structure, easy to operate, and can simultaneously achieve clamping and positioning; therefore, improvement is urgently needed. Utility Model Content

[0003] The purpose of this utility model is to provide a fixture for the production of parts, thereby solving the aforementioned problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A fixture for parts production, comprising

[0006] Fixed platform, push plate and quick clamp;

[0007] The fixed platform is a horizontally placed plate-shaped base with an upward-protruding limiting boss at one end of its upper surface and a support with a threaded hole at the other end away from the boss.

[0008] The push plate is a vertically installed plate-shaped component located between the limiting boss and the support of the fixed platform;

[0009] The body of the quick clamp is rigidly fixed to the upper end face of the support by screws. The telescopic stud of the quick clamp passes through the support in the horizontal direction and is threaded to the back of the push plate, so that the push plate remains perpendicular to the fixed table and can slide in a straight line.

[0010] In some specific embodiments, the limiting boss and the fixing platform are integrally machined into an "L"-shaped step, with the step facing the push plate side, forming the longitudinal positioning surface of the component.

[0011] In some specific embodiments, a downwardly recessed "V"-shaped positioning groove is also provided on the top surface of the limiting boss to accommodate the cylindrical part at the upper end of the component and form a two-point contact positioning.

[0012] In some specific embodiments, the upper surface of the fixed platform is provided with two parallel "T"-shaped guide rails that extend along the sliding direction of the push plate between the limiting boss and the support. The bottom surface of the push plate is provided with two "T"-shaped sliding grooves at corresponding positions, and the guide rails and sliding grooves form a linear sliding fit.

[0013] In some specific embodiments, the side plate of the push plate facing the limiting boss is provided with an outwardly protruding positioning boss. The end face of the positioning boss is a vertical plane for fitting with the side plane of the component.

[0014] In some specific embodiments, the root of the positioning boss is connected to the push plate body by an "R"-shaped transition fillet to avoid stress concentration.

[0015] In some specific embodiments, the support is an inverted "U"-shaped double-ear structure extending upward from the upper surface of the fixed platform. The two ears are coaxially provided with horizontal light holes. The telescopic stud of the quick clamp passes through the light holes and engages with the threaded hole on the back of the push plate.

[0016] In some specific embodiments, the quick clamp has mounting wings on both sides of its body. The mounting wings are rigidly connected to the threaded holes on the upper end face of the support by hexagon socket head cap screws, so that the axis of the quick clamp is parallel to the upper surface of the fixed platform.

[0017] In some specific embodiments, the lower surface of the fixed platform is provided with downward protruding shock-absorbing pad mounting posts at the four corners, which are used to insert the center hole of the elastic shock-absorbing pad to realize the elastic connection between the tooling and the external worktable.

[0018] In some specific embodiments, the fixing platform, push plate, limiting boss, support and positioning boss are all integrally machined from aluminum alloy and the surface is hard anodized; the telescopic stud and mounting wing of the quick clamp are made of nickel-plated 45 steel.

[0019] The beneficial effects of this utility model are:

[0020] Improved assembly efficiency: Components can be fixed stably at once, reducing rotation or shaking during assembly; at the same time, components can be placed at specific angles, reducing the number of times the workbench rotates and shortening auxiliary time.

[0021] Reduced assembly defect rate: The push plate and the fixed platform boss structure together restrict the freedom of parts and their internal components, prevent displacement, and significantly reduce assembly errors.

[0022] Easy to operate: Clamping and releasing can be completed simply by turning the quick clamp, which can be operated by a single person, reducing labor intensity. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the fixture for parts production according to this utility model;

[0024] Figure 2 This is a front view structural schematic diagram of this utility model;

[0025] Figure 3 This is a cross-sectional view of the present invention, including a schematic diagram of surface AA.

[0026] Figure 4 This is the right view of this utility model;

[0027] Figure 5 This is a cross-sectional view of the BB surface of this utility model.

[0028] In the attached diagram: 1. Fixed platform; 2. Push plate; 3. Quick clamp; 4. Components; 5. Limiting boss; 6. Support; 7. Telescopic stud. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The fixture shown is used for parts production and includes a fixed table 1, a push plate 2 and a quick clamp 3.

[0031] The fixed platform 1 is a horizontally placed plate-shaped base, with an upwardly protruding limiting boss 5 on one end of its upper surface, and a support 6 with a threaded hole on the other end away from the boss 5.

[0032] The push plate 2 is a vertically installed plate-shaped component located between the limiting boss 5 and the support 6 of the fixed platform 1;

[0033] The body of the quick clamp 3 is rigidly fixed to the upper end face of the support 6 by screws. The telescopic stud 7 of the quick clamp 3 passes through the support 6 in the horizontal direction and is threaded to the back of the push plate 2, so that the push plate 2 remains perpendicular to the fixed table 1 and can slide in a straight line.

[0034] In this embodiment, the [fixed platform]

[0035] The fixed platform 1 is rectangular and placed horizontally on the workbench, forming the load-bearing base of the entire tooling. At one end of its upper surface—that is... Figure 1 , Figure 2 As shown on the left side—a protruding limiting boss 5 is integrally machined, with the side of the boss facing the interior of the tooling being a vertical surface, used to limit the longitudinal end face of component 4; on the other end of the upper surface of the fixed platform—that is Figure 1 , Figure 2 As shown on the right side, a support 6 with a threaded hole is provided for mounting the quick clamp 3. A straight guide area is formed between the limiting boss 5 and the support 6. The center line of this area coincides with the axis of the telescopic stud 7, providing a sliding track for the push plate 2.

[0036] [Push plate]

[0037] The push plate 2 is a vertical plate-shaped component, with its thickness direction perpendicular to the upper surface of the fixed platform 1, and is arranged between the limiting boss 5 and the support 6. The back of the push plate—the side facing the support—has a horizontal threaded hole for engaging with the telescopic stud 7 of the quick clamp 3; the front of the push plate—the side facing the limiting boss 5—has a boss structure for fitting against the side plane of the component 4, achieving lateral positioning and clamping. The bottom surface of the push plate and the upper surface of the fixed platform are in a sliding fit, ensuring that the push plate can only move linearly along the axis of the telescopic stud, preventing swaying.

[0038]

Quick Clamping Pliers

[0039] The body of the quick-release clamp 3 is rigidly fixed to the upper end face of the support 6 by screws. Its telescopic stud 7 passes horizontally through the central hole of the support 6 and is screwed into the threaded hole on the back of the push plate 2. When the quick-release clamp handle is turned, the telescopic stud 7 generates a linear displacement in the axial direction, thereby moving the push plate 2 closer to or away from the limiting boss 5, completing the clamping or releasing action. After the quick-release clamp self-locks, the position of the push plate is mechanically locked, and no continuous external force is required.

[0040] [Dynamic Work Process]

[0041] Placement stage: Place component 4 on the upper surface of the fixed platform 1, so that its longitudinal end face is against the vertical surface of the limiting boss 5, and complete the initial positioning.

[0042] Pre-clamping stage: Pull the handle of quick clamp 3, the telescopic stud 7 extends outward, and pushes the push plate 2 to slide straight along the upper surface of the fixed platform toward the component 4.

[0043] Clamping stage: After the front boss of the push plate is in contact with the side of the component 4, continue to pull the handle, the telescopic stud 7 continues to extend, and the push plate presses the component between the limiting boss 5 and the push plate to form a rigid clamp; at this time, the component is restricted in the longitudinal, lateral and rotational directions, and the internal components also lose their freedom due to the boss positioning.

[0044] Assembly stage: With the quick clamps in a self-locking position, the operator can perform subsequent processes such as screw fastening, riveting, or inspection on the parts without additional support.

[0045] Release phase: Reverse the quick clamp handle, the telescopic stud 7 retracts, driving the push plate 2 to move backward in a straight line, the pressure on the side of the component 4 is released, and it can be directly removed or replaced with the next part, completing one work cycle.

[0046] In some specific embodiments, the limiting boss 5 and the fixing platform 1 are integrally machined into an "L"-shaped step, with the step facing the push plate 2 side, forming the longitudinal positioning surface of the component 4.

[0047] In some specific embodiments, a downwardly recessed "V"-shaped positioning groove is also provided on the top surface of the limiting boss 5 to accommodate the cylindrical part at the upper end of the component 4 and form a two-point contact positioning.

[0048] In some specific embodiments, the upper surface of the fixed platform 1 is provided with two parallel "T"-shaped guide rails that extend along the sliding direction of the push plate 2 between the limiting boss 5 and the support 6. The bottom surface of the push plate 2 is provided with two "T"-shaped sliding grooves at corresponding positions, and the guide rails and sliding grooves form a linear sliding fit.

[0049] In some specific embodiments, the push plate 2 has an outwardly protruding positioning boss on the side plate facing the limiting boss 5. The end face of the positioning boss is a vertical plane, which is used to fit with the side plane of the component 4.

[0050] In some specific embodiments, the root of the positioning boss is connected to the main body of the push plate 2 by an "R"-shaped transition fillet to avoid stress concentration.

[0051] In this embodiment, the positioning boss is located on the side of the push plate 2 opposite to the limiting boss 5, and is integrally machined with the push plate 2. It protrudes horizontally outward from the plate surface, and the thickness of the boss is slightly less than the thickness of the side wall of the component 4. The height of the boss covers the main stress area of ​​the side of the component 4. Its end face is a vertical plane obtained by milling, with a surface roughness Ra≤1.6μm, which can form a surface-to-surface fit with the side of the component 4 to achieve lateral positioning and transmit clamping force. The root of the boss is connected to the main body of the push plate 2 with an "R"-shaped transition fillet with a fillet radius of R2~R3mm. The transition is continuous and smooth, eliminating sharp angle abrupt changes, reducing the stress peak at the moment of clamping, and preventing fatigue cracks in the push plate under repeated loads.

[0052] Dynamic working process: When the quick-clamp 3 handle is pulled, the telescopic stud 7 extends forward, pushing the push plate 2 to slide linearly along the upper surface of the fixed platform 1. The end face of the positioning boss first contacts the side of the component 4. As the stud continues to extend, a uniform surface pressure is formed between the end face of the boss and the side of the component 4, pushing the component 4 towards the limiting boss 5 and ensuring its longitudinal end face is tightly against the vertical surface of the limiting boss, completing simultaneous longitudinal and transverse positioning. The transition fillet disperses concentrated stress during the force application process, ensuring no permanent deformation at the root of the boss. Pulling the handle in the opposite direction retracts the telescopic stud 7, instantly disengaging the end face of the positioning boss from the side of the component 4, allowing the component 4 to be freely removed. This completes the clamping-positioning-release cycle with a single pull.

[0053] In some specific embodiments, the support 6 is an inverted "U"-shaped double-ear structure extending upward from the upper surface of the fixed platform 1. The two ears are coaxially provided with horizontal light holes. The telescopic stud 7 of the quick clamp 3 passes through the light holes and engages with the threaded hole on the back of the push plate 2.

[0054] In some specific embodiments, the quick clamp 3 has mounting wings on both sides of its body. The mounting wings are rigidly connected to the threaded holes on the upper end face of the support 6 by hexagon socket head cap screws, so that the axis of the quick clamp 3 is parallel to the upper surface of the fixed platform 1.

[0055] In some specific embodiments, the lower surface of the fixed platform 1 is provided with downward protruding shock-absorbing pad mounting posts at the four corners, which are used to insert the center hole of the elastic shock-absorbing pad to realize the elastic connection between the tooling and the external worktable.

[0056] In some specific embodiments, the fixing platform 1, push plate 2, limiting boss 5, support 6 and positioning boss are all integrally machined from aluminum alloy and the surface is hard anodized; the telescopic stud 7 and mounting wing of the quick clamp 3 are made of nickel-plated 45 steel.

[0057] Working principle

[0058] When the handle of the quick clamp 3 is turned, the telescopic stud 7 moves linearly along the horizontal axis, causing the push plate 2 to slide linearly on the upper surface of the fixed platform 1. When the push plate 2 moves towards the limiting boss 5, its front boss fits against the side of the component 4 and continues to apply axial thrust, causing the longitudinal end face of the component 4 to fit tightly against the vertical surface of the limiting boss 5, thus forming mechanical limits in the longitudinal, lateral, and rotational directions simultaneously. After the quick clamp 3 enters the self-locking angle, the position of the push plate 2 is mechanically locked, and the clamping force remains constant, maintaining the positioning and clamping state without continuous external force. Turning the handle in the opposite direction causes the telescopic stud 7 to retract, the push plate 2 to move back, and the clamping force to be released instantly, allowing the component 4 to be freely removed, realizing a continuous cycle of clamping and unloading completed by a single person in a single action.

[0059] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0060] This tooling utilizes an integrated "thread-sliding-self-locking" mechanism, combining the clamping and positioning processes into a single wrench action. The clamping time for a single part is reduced from 30 seconds with a traditional vise to less than 5 seconds, increasing assembly efficiency by more than 5 times. The double boss structure of the push plate and the limiting boss simultaneously constrains the six degrees of freedom of the part body and its internal components, reducing the assembly defect rate from 3% to less than 0.3%. The entire fixture consists of fewer than ten parts, weighs less than 1 kg, has a simple structure, low cost, requires no additional air or power source, and can directly replace existing general-purpose fixtures. It is suitable for the rapid production of small batches of various types of parts and parts with irregular shapes.

[0061] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fixture tool for production of a component part, characterized by, include: Fixed platform (1), push plate (2) and quick clamp (3); The fixed platform (1) is a horizontally placed plate-shaped base with an upwardly protruding limiting boss (5) on one end of its upper surface and a support (6) with a threaded hole on the other end away from the limiting boss (5). The push plate (2) is a vertically arranged plate-shaped component located between the limiting boss (5) and the support (6) of the fixed platform (1); The body of the quick clamp (3) is rigidly fixed to the upper end face of the support (6) by screws. The telescopic stud (7) of the quick clamp (3) passes through the support (6) in the horizontal direction and is threaded to the back of the push plate (2), so that the push plate (2) remains perpendicular to the fixed table (1) and can slide in a straight line.

2. The clamp tool of claim 1, wherein The limiting boss (5) and the fixed platform (1) are integrally processed into an "L"-shaped step, with the step facing the push plate (2) to form the longitudinal positioning surface of the component (4).

3. The clamp tool of claim 2, wherein, The top surface of the limiting boss (5) is also provided with a downward recessed "V" shaped positioning groove, which is used to accommodate the cylindrical part at the upper end of the component (4) and form a two-point contact positioning.

4. The clamp tool of claim 1, wherein The upper surface of the fixed platform (1) is provided with two parallel "T"-shaped guide rails that extend along the sliding direction of the push plate (2) between the limiting boss (5) and the support (6). The bottom surface of the push plate (2) is provided with two "T"-shaped sliding grooves at corresponding positions. The guide rails and the sliding grooves form a linear sliding fit.

5. The clamp tool of claim 1, wherein The push plate (2) has an outwardly protruding positioning boss on one side of the plate facing the limiting boss (5). The end face of the positioning boss is a vertical plane, which is used to fit with the side plane of the component (4).

6. The clamp tool of claim 5, wherein, The root of the positioning boss is connected to the main body of the push plate (2) by an "R"-shaped transition fillet to avoid stress concentration.

7. The clamp tool of claim 1, wherein The support (6) is an inverted "U" shaped double-ear structure extending upward from the upper surface of the fixed platform (1). The two ears are coaxially provided with horizontal light holes. The telescopic stud (7) of the quick clamp (3) passes through the light hole and engages with the threaded hole on the back of the push plate (2).

8. The clamp tool of claim 1, wherein: The quick clamp (3) has mounting wings on both sides of its body. The mounting wings are rigidly connected to the threaded holes on the upper end face of the support (6) by internal hexagonal head screws, so that the axis of the quick clamp (3) is parallel to the upper surface of the fixed platform (1).

9. The clamp tool of claim 1, wherein, The fixed platform (1) has four downward protruding shock-absorbing pad mounting posts at the four corners of its lower surface, which are used to insert the center hole of the elastic shock-absorbing pad to realize the elastic connection between the tooling and the external workbench.

10. The clamp tool of any one of claims 1 to 9, wherein, The fixed platform (1), push plate (2), limiting boss (5), support (6) and positioning boss are all integrally formed of aluminum alloy and the surface is treated with hard anodizing; the telescopic stud (7) and mounting wing of the quick clamp (3) are made of nickel-plated 45 steel.

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