Automatic loosening and tightening clamp

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Through the drive control mechanism and adjustment mechanism of the automatic elastic clamp, the automatic tightening and force control of the workpiece by the fixture assembly is realized, solving the problem that existing clamps cannot adapt to different materials and types of workpieces, and improving the flexibility and stability of processing.

CN223186060UActive Publication Date: 2025-08-05RIZHAO KEFENG ELECTRONICS CO LTD

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Patent Information

Application Number: CN202422056761.0
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-08-23
Publication Date: 2025-08-05
Estimated Expiration: 2034-08-23

AI Technical Summary

Technical Problem

The clamping force of existing mechanical machining fixtures is constant and cannot be adjusted, and it cannot adapt to the rapid positioning and fixing of workpieces of different materials and types, resulting in damage to workpieces with softer materials and unstable positioning of workpieces with harder materials.

Method used

Automatic elastic clamps are adopted, including a drive control mechanism and an adjustment mechanism. The automatic elastic operation of the clamp components is achieved through the drive motor and gear set transmission. The torque ring and control top spring are combined to control and limit the maximum clamping force, and adapt to the clamping of workpieces of different materials and types.

Benefits of technology

It realizes rapid positioning and stable clamping of workpieces, with strong adaptability and stability, can adapt to the processing needs of workpieces of different materials and types, and improves the flexibility and practicality of fixtures.

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Abstract

The utility model discloses an automatic loosening and tightening clamp, which relates to the technical field of machining and comprises an automatic component consisting of a driving control mechanism and an adjusting mechanism. The drive control mechanism can achieve automatic loosening and tightening operation of the clamp assembly on the workpiece, use is convenient and flexible, rapid positioning and fixing use of the workpiece can be achieved, meanwhile, the adjusting mechanism can achieve the functions of adjusting and limiting the maximum positioning and fixing force, and therefore the clamping and fixing device can adapt to clamping and fixing of workpieces of different types and materials, and the working efficiency is improved. The fixture is simple in structure and convenient to operate, facilitates various subsequent machining operations, is stable in positioning, and solves the problems that the clamping and fixing force of a fixture used in existing machining is constant and cannot be adjusted, and the fixture cannot adapt to quick positioning and fixing of workpieces of different materials and types.

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Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and more specifically, relates to an automatic loosening and tightening clamp. Background Art

[0002] Machining refers to the process of changing the external dimensions or performance of a workpiece through a mechanical device. During the machining process, the workpiece needs to be positioned and fixed by a fixture to facilitate various cutting and other processing operations on the workpiece. At present, the automatic tightening and loosening of the fixture is achieved by the rotation of the screw driven by a motor.

[0003] As for the existing fixtures used in mechanical processing, although they have the function of automatic tightening and loosening, their clamping force is constant and cannot be adjusted, and they cannot adapt to the rapid positioning and fixation of workpieces of different materials and types. The constant clamping force can easily damage workpieces with softer materials, and at the same time, it cannot stably clamp and position workpieces with harder materials. The stability is poor and the practicality is not high. Utility Model Content

[0004] The disclosed embodiments relate to an automatic loosening and tightening clamp having an automated component, wherein a drive control mechanism can realize the automated loosening and tightening operation of the clamp component on the workpiece. The clamp is convenient and flexible to use, and can realize the rapid positioning and fixation of the workpiece. At the same time, the adjustment mechanism can realize the regulation and limiting functions of the maximum positioning and fixing force, thereby being able to adapt to the clamping and fixation of workpieces of different types and materials, facilitating various subsequent processing operations, and having stable positioning, and extremely strong flexibility, adaptability, stability and practicality.

[0005] In a first aspect of the present disclosure, an automatic loosening and tightening clamp is provided, comprising a clamp assembly, the clamp assembly comprising a fixed base, a positioning screw, and two fixed clamping blocks, the positioning screw being rotatably connected to the interior of the fixed base, and the two fixed clamping blocks being respectively inserted into the sides of the fixed base, the positioning screw being screwed into the interior of the fixed clamping blocks via a rod body thread, and the positioning screw being able to drive the two fixed clamping blocks to move synchronously and in opposite directions via the rod body thread when rotating; and an automation component comprising a drive control mechanism and an adjustment mechanism;

[0006] The drive control mechanism includes a drive motor, a drive rod and a drive disk. The drive motor is fixedly mounted on the side of the fixed base, and the drive rod is rotatably connected to the inside of the fixed base. The drive motor and the drive rod are connected through a gear set, and the drive disk is plugged into one end of the drive rod.

[0007] The adjusting mechanism comprises an adjusting rod and a positioning plate. The adjusting rod is rotatably connected to the inside of the driving rod, and the positioning plate is plugged into the outside of the driving rod.

[0008] In at least some embodiments, a control top spring is provided on the side of the positioning plate, and two ends of the control top spring respectively abut against the side of the positioning plate and the side of the driving plate.

[0009] In at least some embodiments, a torsion gear ring is provided on one side of the positioning screw and the driving disc opposite to each other, and under the action of a control top spring, the two torsion gear rings are plugged into each other.

[0010] In at least some embodiments, the cross-sectional shape of a single gear tooth of the torsion gear ring is a right triangle.

[0011] In at least some embodiments, a driving groove is provided inside the driving disk, and a synchronization rod with a regular polygonal cross section is provided at one end of the driving rod, and the synchronization rod is inserted into the driving groove.

[0012] In at least some embodiments, the exterior of the rod body of the adjusting rod is provided with threads, and the adjusting rod is screwed to the interior of the positioning plate through the threads of the rod body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The drive control mechanism can realize the automatic tightening and loosening operation of the clamp assembly on the workpiece. It is easy and flexible to use and can realize the rapid positioning and fixing of the workpiece. At the same time, the adjustment mechanism can realize the regulation and limiting functions of the maximum positioning and fixing force, so that it can adapt to the clamping and fixing of workpieces of different types and materials, facilitate various subsequent processing operations, and have stable positioning, thereby improving the flexibility, stability, adaptability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0018] Figure 4 It is a schematic diagram of the structure of the utility model after the automation component is disassembled.

[0019] Figure 5 This is a schematic diagram of the internal structure of the clamp assembly of the utility model when the clamping force reaches the maximum and the driving disk is still rotating forward.

[0020] Figure 6 This utility model Figure 5 Schematic diagram of the enlarged structure of part B in the middle.

[0021] In the figure, the corresponding relationship between component names and drawing numbers is as follows:

[0022] 1. Clamp assembly; 101. Fixing seat; 102. Positioning screw; 103. Fixing clamp;

[0023] 2. Drive control mechanism; 201. Drive motor; 202. Drive rod; 2021. Synchronous rod; 203. Drive disc; 2031. Torque gear ring; 2032. Drive slot;

[0024] 3. Adjustment mechanism; 301. Adjustment rod; 302. Positioning plate; 3021. Control top spring. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.

[0026] As attached Figure 1 To the attached Figure 6 As shown:

[0027] Example 1: The utility model provides an automatic loosening and tightening clamp, including a clamp assembly 1, which includes a fixed base 101, a positioning screw 102 and two fixed clamping blocks 103. The positioning screw 102 is rotatably connected to the interior of the fixed base 101, and the two fixed clamping blocks 103 are respectively inserted on both sides of the fixed base 101. The positioning screw 102 is screwed into the interior of the fixed clamping blocks 103 through a rod body thread, and when the positioning screw 102 rotates, it can drive the two fixed clamping blocks 103 to move synchronously in different directions through the rod body thread; the utility model also includes an automation component, which is composed of a drive control mechanism 2 and an adjustment mechanism 3;

[0028] The drive control mechanism 2 includes a drive motor 201, a drive rod 202, and a drive disk 203. The drive motor 201 is fixedly mounted on the side of the fixed base 101, and the drive rod 202 is rotatably connected to the inside of the fixed base 101. The drive motor 201 and the drive rod 202 are connected via a gear train, and the drive disk 203 is plugged into one end of the drive rod 202.

[0029] The adjusting mechanism 3 includes an adjusting rod 301 and a positioning plate 302 . The adjusting rod 301 is rotatably connected to the inside of the driving rod 202 , and the positioning plate 302 is plugged into the outside of the driving rod 202 .

[0030] In the embodiment of the present disclosure, a driving groove 2032 is provided inside the driving disk 203, and a synchronization rod 2021 with a regular polygonal cross section is provided at one end of the driving rod 202. The synchronization rod 2021 is inserted into the driving groove 2032. In use, the drive control mechanism 2 can realize the automatic loosening and tightening operation of the clamp assembly 1 on the workpiece. When the driving motor 201 rotates, the driving motor 201 can drive the driving rod 202 to rotate through the gear set. When the driving rod 202 rotates, the synchronization rod 2021 can drive the driving disk 203 to rotate through the driving groove 2032. When the driving disk 203 rotates forward, the synchronization rod 2021 can drive the driving disk 203 to rotate. When the driving disc 203 rotates in the opposite direction, the straight edges of the teeth of the torsion gear ring 2031 of the driving disc 203 and the positioning screw 102 are engaged with each other, thereby driving the positioning screw 102 to reverse. At this time, the two fixed clamping blocks 103 move away from each other to realize the operation of loosening the workpiece. It is convenient and flexible to use and has a high degree of automation.

[0031] In the embodiment of the present disclosure, a control top spring 3021 is provided on the side of the positioning disk 302, and the two ends of the control top spring 3021 are respectively against the side of the positioning disk 302 and the side of the driving disk 203, and a torsion gear ring 2031 is provided on the opposite side of the positioning screw 102 and the driving disk 203. Under the action of the control top spring 3021, the two torsion gear rings 2031 are plugged into each other, and the cross-sectional shape of a single gear tooth of the torsion gear ring 2031 is a right triangle. In use, the adjustment mechanism 3 can limit the maximum clamping and fixing force of the clamp assembly 1 on the workpiece. When clamping the workpiece, the clamping force of the two fixed clamps 103 on the workpiece is the moving resistance. Since the movement of the fixed clamp 103 is achieved by the positioning screw 102, the moving resistance is also proportional to the rotational resistance of the positioning screw 102. The relationship is such that when the clamping force is less than the set force, the rotational resistance of the positioning screw 102 is less than the elastic force of the control top spring 3021. At this time, the oblique sides of the gear teeth of the driving disk 203 and the torsion gear ring 2031 of the positioning screw 102 can be stably squeezed and transmitted to each other, thereby realizing the functions of clamping and applying the clamping force. When the clamping force is greater than the set force, the rotational resistance of the positioning screw 102 is greater than the elastic force of the control top spring 3021. At this time, the gear teeth of the driving disk 203 and the torsion gear ring 2031 of the positioning screw 102 will avoid each other through the oblique sides, that is, the driving disk 203 will move to one side to avoid and compress the control top spring 3021, so that the driving disk 203 will not transmit the positioning screw 102 when idling, thereby realizing the function of limiting the maximum clamping force and being stable to use.

[0032] In the embodiment of the present disclosure, the outside of the rod body of the adjusting rod 301 is provided with a thread, and the adjusting rod 301 is screwed to the inside of the positioning plate 302 through the rod body thread. During use, the adjusting mechanism 3 can also adjust the maximum clamping force value of the clamp assembly 1. When the driving rod 202 is fixed and the adjusting rod 301 is rotated, the adjusting rod 301 can drive the positioning plate 302 to move in the axial direction of the driving rod 202 through the rod body thread to change the use position. The change in the use position of the positioning plate 302 changes the initial telescopic length of the control top spring 3021, that is, the maximum clamping force value of the clamp assembly 1, which can adapt to the clamping and fixing of workpieces of different types and materials, and has strong adaptability.

[0033] The specific usage and function of this embodiment are as follows:

[0034] In the present invention, the maximum clamping force value of the clamp assembly 1 is adjusted according to the material and type of the workpiece to be processed. When the driving rod 202 is fixed and the adjusting rod 301 is rotated, the adjusting rod 301 can drive the positioning plate 302 to move in the axial direction of the driving rod 202 to change the use position through the rod body thread. The change of the use position of the positioning plate 302 changes the initial telescopic length of the control top spring 3021, that is, the maximum clamping force value of the clamp assembly 1, which can adapt to the clamping and fixing of workpieces of different types and materials. Thereafter, the clamp assembly 1 can realize the automatic loosening and tightening operation of the workpiece through the drive control mechanism 2. When the driving motor 201 rotates When the drive plate 203 rotates in the forward direction, the driving motor 201 can drive the driving rod 202 to rotate through the gear set. When the driving rod 202 rotates, the synchronous rod 2021 can drive the driving plate 203 to rotate through the driving groove 2032. When the driving plate 203 rotates in the forward direction, under the action of the control top spring 3021, the driving plate 203 and the torsion gear ring 2031 of the positioning screw 102 squeeze each other and drive each other, thereby driving the positioning screw 102 to rotate in the forward direction. At this time, the two fixed clamping blocks 103 approach each other to achieve the clamping operation of the workpiece. When the driving plate 203 rotates in the reverse direction, the torsion gear ring 2031 of the driving plate 203 and the positioning screw 102 When the workpiece is clamped, the two fixing clamps 103 are clamped to the workpiece, which is the maximum clamping force of the clamp assembly 1. When the workpiece is clamped, the clamping force of the two fixing clamps 103 on the workpiece is the moving resistance. Since the movement of the fixing clamp 103 is achieved by the positioning screw 102, the moving resistance is also proportional to the rotation resistance of the positioning screw 102. Therefore, when the clamping force is less than the set force, the rotation resistance of the positioning screw 102 is less than the elastic force of the control top spring 3021. The beveled edges of the teeth of the torsion gear ring 2031 of the driving disk 203 and the positioning screw 102 can stably squeeze and transmit each other, realizing the functions of clamping and applying clamping force. When the clamping force is greater than the set force, the rotational resistance of the positioning screw 102 is greater than the elastic force of the control top spring 3021. At this time, the teeth of the torsion gear ring 2031 of the driving disk 203 and the positioning screw 102 will avoid each other through the beveled edges, that is, the driving disk 203 will move to one side to avoid and compress the control top spring 3021, so that the driving disk 203 will not transmit the positioning screw 102 when idling, thereby realizing the function of limiting the maximum clamping force.

[0035] In this article, there are several points to note:

[0036] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0037] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0038] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. Automatic loosening and tightening fixture, including: A clamp assembly (1), the clamp assembly (1) comprising a fixed seat (101), a positioning screw (102) and two fixed clamps (103), the positioning screw (102) being rotatably connected to the interior of the fixed seat (101), and the two fixed clamps (103) being respectively plugged into the two sides of the fixed seat (101), the positioning screw (102) being screwed to the interior of the fixed clamp (103) via a rod thread, and the positioning screw (102) being able to drive the two fixed clamps (103) to move synchronously and in opposite directions via the rod thread when rotating; characterized in that: it also comprises an automation component, the automation component being composed of a drive control mechanism (2) and an adjustment mechanism (3); The drive control mechanism (2) includes a drive motor (201), a drive rod (202) and a drive disk (203); the drive motor (201) is fixedly mounted on a side of the fixing seat (101), and the drive rod (202) is rotatably connected to the inside of the fixing seat (101); the drive motor (201) and the drive rod (202) are connected to each other via a gear train, and the drive disk (203) is plugged into one end of the drive rod (202); The adjusting mechanism (3) comprises an adjusting rod (301) and a positioning plate (302). The adjusting rod (301) is rotatably connected to the inside of the driving rod (202), and the positioning plate (302) is plugged into the outside of the driving rod (202).

2. The automatic tensioning clamp according to claim 1, characterized in that: A control top spring (3021) is provided on the side of the positioning disk (302), and two ends of the control top spring (3021) respectively abut against the side of the positioning disk (302) and the side of the driving disk (203).

3. The automatic loosening and tightening clamp according to claim 2, characterized in that: Torsion gear rings (2031) are provided on opposite sides of the positioning screw (102) and the driving disc (203). Under the action of the control top spring (3021), the two torsion gear rings (2031) are plugged into each other.

4. The automatic tensioning clamp according to claim 3, characterized in that: The cross-sectional shape of a single tooth of the torsion gear ring (2031) is a right triangle.

5. The automatic loosening and tightening clamp according to claim 4, characterized in that: A driving groove (2032) is provided inside the driving disc (203), and a synchronization rod (2021) having a regular polygonal cross section is provided at one end of the driving rod (202), and the synchronization rod (2021) is inserted into the driving groove (2032).

6. The automatic loosening and tightening clamp according to claim 5, characterized in that: The outside of the rod body of the adjusting rod (301) is provided with a thread, and the adjusting rod (301) is screwed to the inside of the positioning plate (302) through the rod body thread.