Machining tool with self-centering function

By designing a machining fixture with a self-centering function, automatic centering and rapid clamping of workpieces are achieved, solving the problems of low precision, low efficiency and low safety caused by manual operation in the existing technology, improving machining accuracy and production efficiency, and reducing operation difficulty and scrap rate.

CN223981726UActive Publication Date: 2026-03-10XUZHOU XUGONG PRECISION IND TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-15
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

Existing machining center tooling relies on manual operation, resulting in low machining accuracy, low efficiency, high operational difficulty, low safety, and the risk of errors. It also requires high-skill training and high labor intensity.

Method used

Design a machining fixture with self-centering function, including a fixture plate, a pressure plate and a self-centering mechanism. The fixture achieves automatic centering and rapid clamping of the workpiece through components such as the pressure plate screw, the support rod and the centering head, thereby reducing human error.

Benefits of technology

Improve machining accuracy and consistency, reduce clamping time, lower operational difficulty and training costs, enhance operational safety, and reduce scrap rate and production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a machining tool with a self-centering function, and belongs to the technical field of machining tools. Comprising a tool plate, a pressing plate and a self-centering mechanism, the pressing plate and the self-centering mechanism are arranged on the tool plate, the pressing plate is connected with the tool plate through a pressing plate screw and a pressing plate nut, the self-centering mechanism comprises a self-centering mechanism base, a supporting rod and a centering head, and the pressing plate and the centering head align and position a notch of a workpiece. The machining device has the advantages of improving machining precision, improving production efficiency, reducing operation difficulty, reducing personal errors, being stable in clamping, reducing accidents, reducing rejection rate, being high in precision and consistency, reducing machining errors and rejection rate and reducing production cost.
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Description

Technical Field

[0001] This utility model relates to a machining tooling with a self-centering function, belonging to the field of machining tooling technology. Background Technology

[0002] The development of machining center tooling has evolved from traditional manual clamping to high-precision, modular, and intelligent solutions. Early tooling relied on manual operation, resulting in low precision and efficiency. With the development of CNC technology and automation, tooling gradually achieved high precision and rapid clamping. Modular and standardized designs improved the versatility and flexibility of tooling. In recent years, the introduction of intelligent and digital technologies has enabled tooling to possess self-centering, real-time monitoring, and automatic adjustment functions, further improving processing efficiency and quality. Simultaneously, environmental protection and sustainable development concepts have driven the development of tooling towards energy conservation and environmental friendliness. This process reflects the manufacturing industry's continuous pursuit of precision, efficiency, flexibility, and intelligence.

[0003] Existing machining center tooling is mainly divided into two categories: manual tooling and hydraulic tooling. However, both types of tooling rely on manual loading and unloading. Inconsistencies and human errors during clamping reduce machining accuracy. Secondly, manual clamping of workpieces based on tooling positioning points may require multiple adjustments each time a workpiece is loaded, increasing clamping time and resulting in low production efficiency. Operators require high skills and experience, increasing training costs. The labor intensity is high, as manual centering and adjustment increase the operator's workload. Safety is low, as manual centering may lead to unstable workpiece clamping, increasing the risk of vibration and displacement during machining, resulting in a high risk of accidents. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a machining fixture with a self-centering function, which can automatically and accurately center the workpiece, reduce human error, and ensure machining consistency; at the same time, the quick clamping function significantly shortens the preparation time and improves production efficiency.

[0005] This utility model is achieved through the following technical solution: a machining fixture with self-centering function, including a fixture plate, a pressure plate and a self-centering mechanism, wherein the pressure plate and the self-centering mechanism are disposed on the fixture plate, the pressure plate is connected to the fixture plate through a pressure plate screw and a pressure plate nut, and the self-centering mechanism includes a self-centering mechanism base, a support rod and a centering head, wherein the pressure plate and the centering head are aligned and positioned with the notch of the workpiece.

[0006] The pressure plate screw is fixed to the tooling plate through a threaded hole, the pressure plate screw passes through the pin hole of the pressure plate, and the pressure plate nut is connected to the pressure plate screw.

[0007] The self-centering mechanism base is tightly connected to the tooling plate by self-centering mechanism base fixing bolts.

[0008] The handrail is connected to the base of the self-centering mechanism via a handrail fixing seat and a handrail fixing bolt.

[0009] The support rod and the centering head are connected by a centering head connecting rod and a centering head connecting rod fixing bolt. The base of the self-centering mechanism is provided with a through hole, which allows the centering head connecting rod to pass through.

[0010] The centering head is connected to the centering head connecting rod through a threaded hole.

[0011] The centering head connecting rod is equipped with a centering head return spring, which is sleeved on the centering head connecting rod.

[0012] The self-centering mechanism is also equipped with a maintenance cover, which is fixed to the base of the self-centering mechanism by maintenance cover fixing bolts.

[0013] The beneficial effects of this utility model are: improving machining accuracy; the self-centering function can automatically and accurately center the workpiece, reduce human error, ensure machining accuracy, and maintain a consistent centering effect in each clamping, thereby improving the consistency of batch production.

[0014] To improve production efficiency, self-centering tooling can quickly and accurately position workpieces, reduce clamping time, improve production efficiency, eliminate the need for manual adjustment of centering, simplify the operation process, and shorten preparation time.

[0015] The self-centering function reduces the technical requirements for operators, thus lowering the difficulty of operation and training costs.

[0016] Automated alignment reduces reliance on operator experience and thus minimizes human error.

[0017] Stable clamping and self-centering function ensure stable workpiece clamping, reduce vibration and displacement during processing, and improve operational safety;

[0018] Reduce accidents; automated alignment reduces manual adjustments and lowers the risk of operator injury.

[0019] Reduce scrap rate, high precision and consistency reduce processing errors and scrap rate, and lower production costs. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a reference diagram showing the usage state of this utility model;

[0023] Figure 3 This is a side view of the present invention.

[0024] In the diagram: 1. Tooling plate; 2. Pressure plate; 3. Self-centering mechanism; 4. Pressure plate screw; 5. Pressure plate nut; 6. Self-centering mechanism base; 7. Support rod; 8. Centering head; 9. Workpiece; 10. Self-centering mechanism base fixing bolt; 11. Support rod fixing seat; 12. Support rod fixing bolt; 13. Centering head connecting rod; 14. Centering head connecting rod fixing bolt; 15. Inspection cover; 16. Inspection cover fixing bolt; 17. Centering head return spring. Detailed Implementation

[0025] 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.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] like Figure 1 and Figure 2 The machining fixture shown includes a fixture plate 1, a pressure plate 2, and a self-centering mechanism 3. The pressure plate 2 and the self-centering mechanism 3 are mounted on the fixture plate 1. The pressure plate 2 is connected to the fixture plate 1 by a pressure plate screw 4 and a pressure plate nut 5. The self-centering mechanism 3 includes a self-centering mechanism base 6, a support rod 7, and a centering head 8. The pressure plate 2 and the centering head 8 are aligned and positioned with the notch of the workpiece 9.

[0028] The pressure plate screw 4 is fixed to the tooling plate 1 through a threaded hole, the pressure plate screw 4 passes through the pin hole of the pressure plate 2, and the pressure plate nut 5 is connected to the pressure plate screw 4.

[0029] The self-centering mechanism base 6 is tightly connected to the tooling plate 1 by the self-centering mechanism base fixing bolt 10.

[0030] The handrail 7 is connected to the self-centering mechanism base 6 via the handrail fixing seat 11 and the handrail fixing bolt 12.

[0031] The support rod 7 and the centering head 8 are connected by the centering head connecting rod 13 and the centering head connecting rod fixing bolt 14. The self-centering mechanism base 6 is provided with a through hole, which allows the centering head connecting rod 13 to pass through.

[0032] The centering head 8 is connected to the centering head connecting rod 13 through a threaded hole.

[0033] The centering head connecting rod 13 is provided with a centering head return spring 17, which is sleeved on the centering head connecting rod 13.

[0034] The self-centering mechanism 3 is also provided with a maintenance cover 15, which is fixed to the base 6 of the self-centering mechanism by maintenance cover fixing bolts 16.

[0035] Working principle and usage process of this utility model:

[0036] Pull out the lever 7 and place the workpiece 9 on the fixture plate 1. Adjust the position of the pressure plate 2 and the position of the pressure plate nut 5 on the pressure plate screw 4. Rotate the workpiece 9 so that its notch is aligned with the centering head 8. Under the elastic force of the centering head return spring 17, the centering head 8 fits into the notch of the workpiece 9, achieving complete positioning of the workpiece 9 on the fixture plate 1. Adjust the position of the pressure plate nut 5 to clamp the workpiece 9.

[0037] 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 machining tool having a self-centering function, characterized by: Including tool plate (1), pressing plate (2) and self-centering mechanism (3), pressing plate (2) and self-centering mechanism (3) are arranged on tool plate (1), the pressing plate (2) is connected with tool plate (1) through pressing plate screw (4) and pressing plate nut (5), self-centering mechanism (3) includes self-centering mechanism base (6), support rod (7) and centering head (8), pressing plate (2) and centering head (8) are aligned and positioned to the aperture of workpiece (9).

2. The machining tooling fixture having a self-centering function according to claim 1, characterized in that: The pressing plate screw (4) is fixed on the tool plate (1) through the threaded hole, the pressing plate screw (4) passes through the pin hole of the pressing plate (2), and the pressing plate nut (5) is connected on the pressing plate screw (4).

3. The machining tooling fixture having a self-centering function according to claim 1, wherein: The self-centering mechanism base (6) is tightly connected with the tool plate (1) through the self-centering mechanism base fixing bolt (10).

4. The machining tooling fixture having a self-centering function according to claim 1, wherein: The support rod (7) is connected on the self-centering mechanism base (6) through the support rod fixing seat (11) and the support rod fixing bolt (12).

5. The machining tool with self-centering function according to claim 1, characterized in that: The support rod (7) and the centering head (8) are connected through the centering head connecting rod (13) and the centering head connecting rod fixing bolt (14), and the self-centering mechanism base (6) is provided with a through hole, so that the centering head connecting rod (13) can pass through.

6. The machining tool with self-centering function according to claim 5, characterized in that: The centering head (8) is connected with the centering head connecting rod (13) through the threaded hole.

7. The machining tool with self-centering function according to claim 5, characterized in that: The centering head connecting rod (13) is provided with the centering head return spring (17), and the centering head return spring (17) is sleeved on the centering head connecting rod (13).

8. The machining tool with self-centering function according to claim 1, characterized in that: The self-centering mechanism (3) is further provided with the maintenance cover (15), and the maintenance cover (15) is fixed on the self-centering mechanism base (6) through the maintenance cover fixing bolt (16).