Elastic clamping jaw for synchronous chuck
By designing elastic jaws for synchronous chucks, combining the engagement of the jaw body with the spiral disc and the compression of the elastic jaw body, the tight clamping and accuracy guarantee of the workpiece is achieved, and alarm is called when the clamping force is insufficient, In the prior art, the problem that the claws in the chuck cannot resist the workpiece.
Patent Information
- Application Number
- CN202422717568.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-11-08
AI Technical Summary
When the existing synchronous chuck clamping workpieces, due to the four-jaw joint fixed core clamping method, a certain chuck in the chuck cannot resist the workpiece, resulting in an empty clamping problem, affecting the clamping stability and tightening.
An elastic claw for synchronous chuck is designed, including a claw body, a guide plate, an elastic claw body, a pressure transmitter and an alarm. The claw body is meshed with a spiral disc to achieve linear sliding to drive the elastic claw body. The compression spring body is in close contact with the workpiece and monitors the clamping force through the pressure transmitter and controller. When the clamping force is lower than the set value, it alarms to ensure the tight clamping and accuracy of the workpiece.
The clamping jaw body is used to tightly clamp the workpiece, ensuring the clamping tightness and accuracy, and promptly alarms when there is deviation in the workpiece, avoiding the workpiece offset and empty clamping.
Smart Images
Figure CN222133491U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to an elastic clamping claw used for a synchronous chuck, and belongs to the technical field of elastic clamping claws. Background Art
[0002] The chuck is a mechanical device used to clamp the workpiece on the machine tool. The workpiece to be processed is clamped by radial movement of the movable jaws distributed circumferentially on the chuck body. When clamping the workpiece, the existing synchronous chuck adopts four-jaw linkage to clamp the workpiece. Due to the slight size deviation of some workpieces during the production process, the four-jaw linkage centering clamping method will make one of the jaws in the chuck unable to resist the workpiece and cause the problem of empty clamping, resulting in unstable clamping of the workpiece. For this reason, China Patent Publication No.: CN216575590U discloses a method for clamping the workpiece. The elastic claw of the synchronous chuck includes a claw body, an elastic member and a resistance member. Since the elastic member itself has stretchability and compressibility, when the elastic claw is applied to a synchronous chuck with four jaws, the deformation of the elastic member can be used to offset the dimensional errors generated during the processing of different workpieces, thereby avoiding the occurrence of empty clamping claws in the synchronous chuck and affecting the clamping stability. However, when clamping, the claws of the synchronous chuck are in an elastic state, so the workpiece is easily offset to one side of the claw during clamping, and the clamping tightness cannot be guaranteed. Utility Model Content
[0003] In order to solve the above problems, the utility model proposes an elastic clamping claw for a synchronous chuck, which can enable the clamping claw body to tightly clamp the workpiece to ensure the clamping tightness; and can ensure the clamping accuracy of the workpiece.
[0004] The utility model discloses an elastic claw for a synchronous chuck, comprising:
[0005] A claw body, wherein the bottom of the claw body is integrally formed with a rack that is movably engaged with the synchronous chuck; straight grooves are provided on both sides of the claw body; a plurality of open grooves are provided at the front end of the claw body; a rear groove body is provided on the side of the open groove of the claw body; a plurality of screw holes are provided on the inner side of the straight groove of the claw body; a sliding hole is provided between the open groove and the rear groove body;
[0006] A guide rail plate, wherein a countersunk hole is provided on the guide rail plate opposite to the screw hole; a bolt body screwed to the screw hole is provided inside the countersunk hole; and the guide rail plate is movably clamped to the synchronous chuck;
[0007] An elastic claw body, wherein the rear end of the elastic claw body is integrally formed with a sliding column; the elastic claw body is provided with a spring groove outside the sliding column; the rear end of the sliding column is provided with a threaded groove; the elastic claw body is movably clamped inside the open groove; the sliding column movably passes through the sliding hole and is screwed to the limit plate; the sliding column is provided with a spring body inside the open groove;
[0008] Pressure transmitter; the pressure transmitter is fixed on the inner side of the rear tank body and is arranged opposite to the limit plate; the pressure transmitter is connected to the alarm through the controller.
[0009] During operation, when the synchronous chuck drives the spiral disk inside to rotate, the claw body engages with the spiral disk, so that the claw body slides in a straight line. When the claw body slides, it is guided by the guide plate; the claw bodies are brought close to each other to clamp the workpiece, or move away from each other to release the clamping; when the claw bodies are close to each other, they drive the elastic claw body to move synchronously, the elastic claw body pre-contacts the workpiece, and continues to approach with the claw body; at this time, the elastic claw body compresses the spring body; the front end of the elastic claw body is pressed to the same plane as the front end of the claw body, thereby preventing the workpiece from deviating to one side of the claw; the workpiece is positioned by the claw body, and when the spring body is compressed, the slide column slides in the slide hole, so that the slide column drives the limit disk to press the pressure transmitter, and the pressure transmitter transmits the pressure value to the controller. The controller compares the collected pressure value with the set value. When the pressure value is lower than the set value, the controller sends an alarm signal to the alarm that the claw does not contact the workpiece.
[0010] Furthermore, a wiring channel is provided on the claw body, and the connecting line of the pressure transmitter is arranged inside the wiring channel and is led out of the claw body from the wiring channel.
[0011] Furthermore, the claw body and the front end of the elastic claw body are integrally formed with a plurality of latching teeth, and the elastic claw body can be brought into close contact with the workpiece through the latching teeth.
[0012] Furthermore, when the elastic claw body is in an unpressurized state, the front end of the elastic claw body protrudes from the front end of the claw body by 2-5mm; when the front end of the elastic claw body is pressed to the same plane as the front end of the claw body, the limit plate is pressed onto the pressure transmitter, and when the claw body clamps the workpiece, the elastic claw body compresses the spring body to press the limit plate onto the pressure transmitter, and when the pressure reaches the set value, it indicates that the claw body is in tight contact with the workpiece; when the workpiece deviates, the compressed spring body pushes the elastic claw body to elastically clamp the workpiece, thereby ensuring the clamping force of the workpiece and giving a timely alarm prompt through the alarm.
[0013] Compared with the prior art, the elastic claw of the synchronous chuck of the utility model can make the claw body tightly clamp the workpiece to ensure the clamping tightness; and can ensure the clamping accuracy of the workpiece. When the workpiece deviates and the claw cannot contact the workpiece, the alarm can give a timely alarm prompt. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the claw body of the utility model.
[0015] Figure 2 It is a schematic diagram of the installation structure of the claw body and the guide rail plate of the utility model.
[0016] Figure 3 It is a schematic diagram of the installation structure of the elastic claw body, the sliding column, the limit plate and the spring body of the utility model.
[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the elastic claw body of the utility model along the sliding direction of the sliding column.
[0018] Figure 5 It is a schematic diagram of the overall structure of the elastic claw used for the synchronous chuck of the utility model.
[0019] Figure numerals: 1. claw body, 2. rack, 3. straight groove, 4. open groove, 5. rear groove body, 6. screw hole, 7. sliding hole, 8. guide plate, 9. bolt body, 10. elastic claw body, 11. sliding column, 12. spring groove, 13. limit plate, 14. spring body, 15. pressure transmitter, 16. wiring groove, 17. tooth. DETAILED DESCRIPTION
[0020] Example:
[0021] like Figures 1 to 5 The elastic claw for the synchronous chuck shown comprises:
[0022] A claw body 1, wherein the bottom of the claw body 1 is integrally formed with a rack 2 that is movably engaged with the synchronous chuck; straight grooves 3 are provided on both sides of the claw body 1; a plurality of open grooves 4 are provided at the front end of the claw body 1; a rear groove body 5 is provided on the side of the open groove 4 of the claw body 1; a plurality of screw holes 6 are provided on the inner side of the straight groove 3 of the claw body 1; a sliding hole 7 is provided between the open groove 4 and the rear groove body 5;
[0023] A guide rail plate 8, wherein the guide rail plate 8 is provided with a countersunk hole facing the screw hole 6; a bolt body 9 screwed to the screw hole 6 is arranged inside the countersunk hole; the guide rail plate 8 is movably engaged with the synchronous chuck;
[0024] The elastic claw body 10 has a sliding post 11 integrally formed at the rear end of the elastic claw body 10; the elastic claw body 10 has a spring groove 12 formed outside the sliding post 11; the sliding post 11 has a threaded groove formed at the rear end; the elastic claw body 10 is movably clamped inside the open groove 4; the sliding post 11 movably passes through the sliding hole 7 and is screwed to the limit plate 13; the sliding post 11 has a spring body 14 formed inside the open groove 4;
[0025] Pressure transmitter 15; the pressure transmitter 15 is fixed to the inner side of the rear tank 5 and is arranged opposite to the limit plate 13; the pressure transmitter 15 is connected to the alarm through the controller.
[0026] During operation, when the synchronous chuck drives the spiral disk inside to rotate, the rack 2 at the bottom of the claw body 1 meshes with the spiral disk, so that the claw body 1 slides linearly. When the claw body 1 slides, it is guided by the guide rail plate 8; the claw bodies 1 are brought close to each other to clamp the workpiece, or away from each other to release the clamping; when the claw bodies 1 are brought close to each other, the elastic claw body 10 is driven to move synchronously, the elastic claw body 10 contacts the workpiece in advance, and continues to approach with the claw body 1; at this time, the elastic claw body 10 compresses the spring body 14; the elastic The front end of the claw body 10 is pressed to the same plane as the front end of the claw body 1, thereby preventing the workpiece from shifting to one side of the claw; the workpiece is positioned by the claw body 1, and when the spring body 14 is compressed, the slide column 11 slides in the slide hole 7, so that the slide column 11 drives the limit plate 13 to press the pressure transmitter 15, and the pressure transmitter 15 transmits the pressure value to the controller. The controller compares the collected pressure value with the set value. When the pressure value is lower than the set value, the controller sends an alarm signal to the alarm that the claw does not interfere with the workpiece.
[0027] The claw body 1 is provided with a wiring channel 16 , and the connecting wire of the pressure transmitter 15 is arranged inside the wiring channel 16 and is led out of the claw body 1 from the wiring channel 16 .
[0028] The front ends of the claw body 1 and the elastic claw body 10 are integrally formed with a plurality of latching teeth 17 , and the latching teeth 17 enable the elastic claw body 10 to be in close contact with the workpiece.
[0029] When the elastic claw body 10 is in an unpressurized state, the front end of the elastic claw body 10 protrudes from the front end of the claw body 1 by 2-5 mm; when the front end of the elastic claw body 10 is pressed to the same plane as the front end of the claw body 1, the limit plate 13 is pressed onto the pressure transmitter 15. When the claw body 1 clamps the workpiece, the elastic claw body 10 compresses the spring body 14 to press the limit plate 13 onto the pressure transmitter 15. When the pressure reaches the set value, it indicates that the claw body 1 is in tight contact with the workpiece. When the workpiece deviates, the compressed spring body 14 pushes the elastic claw body 10 to elastically clamp the workpiece, thereby ensuring the clamping force of the workpiece and giving a timely alarm prompt through the alarm.
[0030] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.
Claims
1. An elastic claw for a synchronous chuck, characterized in that: include: A claw body, wherein the bottom of the claw body is integrally formed with a rack that is movably engaged with the synchronous chuck; straight grooves are provided on both sides of the claw body; a plurality of open grooves are provided at the front end of the claw body; a rear groove body is provided on the side of the open groove of the claw body; a plurality of screw holes are provided on the inner side of the straight groove of the claw body; a sliding hole is provided between the open groove and the rear groove body; A guide rail plate, wherein a countersunk hole is provided on the guide rail plate opposite to the screw hole; a bolt body screwed to the screw hole is provided inside the countersunk hole; and the guide rail plate is movably clamped to the synchronous chuck; An elastic claw body, wherein the rear end of the elastic claw body is integrally formed with a sliding column; the elastic claw body is provided with a spring groove outside the sliding column; the rear end of the sliding column is provided with a threaded groove; the elastic claw body is movably clamped inside the open groove; the sliding column movably passes through the sliding hole and is screwed to the limit plate; the sliding column is provided with a spring body inside the open groove; Pressure transmitter; the pressure transmitter is fixed on the inner side of the rear tank body and is arranged opposite to the limit plate; the pressure transmitter is connected to the alarm through the controller.
2. The elastic claw for a synchronous chuck according to claim 1, characterized in that: A wiring groove is provided on the claw body, and the connecting wire of the pressure transmitter is arranged inside the wiring groove and is led out of the claw body from the wiring groove.
3. The elastic claw for a synchronous chuck according to claim 1, characterized in that: The claw body and the front end of the elastic claw body are integrally formed with a plurality of locking teeth.
4. The elastic claw for a synchronous chuck according to claim 1, characterized in that: When the elastic claw body is in an unpressurized state, the front end of the elastic claw body protrudes 2-5mm from the front end of the claw body; when the front end of the elastic claw body is pressed to the same plane as the front end of the claw body, the limit plate is pressed onto the pressure transmitter.