Self-centering vice

Abstract

The utility model relates to a self-centering vice which comprises a transition disc and a transmission body fixedly installed on the transition disc, a centering assembly, a left trapezoidal block and a right trapezoidal block are fixedly installed in the middle of the transmission body, the left trapezoidal block and the right trapezoidal block are located on the two sides of the centering assembly, and a driving shaft for driving the left trapezoidal block and the right trapezoidal block to synchronously move in the opposite direction and in the opposite direction is arranged in the transmission body. The driving shaft is rotatably mounted on the centering assembly, the centering assembly used for positioning a workpiece is arranged between the left trapezoidal block and the right trapezoidal block, and then the driving shaft is rotated to drive the left trapezoidal block and the right trapezoidal block to synchronously move towards the centering assembly to clamp the workpiece; and meanwhile, clamping and positioning of the workpiece are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vises, in particular to a self-centering vise. Background Art

[0002] Currently, after the centering vise is installed in the base and used for a period of time, the centering vise is adsorbed on the base by the tension of the machining fluid oil film due to the high surface finish of the contact surface between the centering vise and the base, making it difficult to remove the centering vise from the base. In addition, the staff needs to use a large force to shake and disassemble the centering vise when removing it, which is easy to cause injuries to the staff. Therefore, we propose a quick-release base structure for the centering vise. Utility Model Content

[0003] The purpose of the utility model is to provide a self-centering vise to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a self-centering vise, including a transition plate and a fixedly installed transmission body, a centering assembly and a left trapezoidal block and a right trapezoidal block located on both sides of the centering assembly are fixedly installed in the middle of the transmission body, a drive shaft for driving the left trapezoidal block and the right trapezoidal block to move synchronously toward and oppositely is provided in the transmission body, and the drive shaft is rotatably installed on the centering assembly.

[0005] Compared with the existing technology, a centering component for positioning the workpiece is set between the left trapezoidal block and the right trapezoidal block, and then the left trapezoidal block and the right trapezoidal block are driven to move synchronously toward the centering component by rotating the drive shaft to tighten the workpiece; at the same time, the workpiece is tightened and positioned.

[0006] According to the preferred technical solution of the utility model, a sliding groove that passes through the centering assembly is horizontally arranged on the transmission body; a mounting groove is vertically arranged in the middle of the centering assembly, and the mounting groove and the sliding groove are through-connected; the centering assembly is fixedly installed in the mounting groove by fasteners, and the left trapezoidal block and the right trapezoidal block are both slidably arranged in the sliding groove.

[0007] According to the preferred technical solution of the present invention, the left trapezoidal block includes a sliding block slidably installed in the sliding groove and a connecting seat located above the transmission body, the connecting seat is fixedly connected to the sliding block; a toothed plate is fixedly installed on the top of the connecting seat by a fastener.

[0008] According to the preferred technical solution of the present invention, guide plates are arranged on both sides of the sliding block, and guide grooves adapted to the guide plates are arranged on both side walls of the sliding groove.

[0009] The preferred technical solution of the utility model is that the centering assembly includes a positioning seat installed in the installation groove and a top seat located on the transmission body, the top seat is fixedly installed on the transmission body; the top seat abuts against the positioning seat; the driving shaft is rotatably installed on the positioning seat, and a centering shaft is elastically installed on the top seat.

[0010] The preferred technical solution of the utility model is that a mounting hole and a through hole coaxially arranged with the mounting hole are provided in the top seat, the diameter of the mounting hole is larger than the diameter of the through hole, a centering shaft is provided in the mounting hole, and the end of the centering shaft passes through the through hole and extends to the outside of the top seat; a spring is sleeved on the centering shaft, the spring is located in the mounting hole, one end of the spring abuts against the centering shaft, and the other end abuts against the top surface of the positioning seat.

[0011] According to the preferred technical solution of the present invention, a retaining ring adapted to the mounting hole is provided on the centering shaft; the retaining ring is located in the mounting hole, and the spring abuts against the retaining ring and is sleeved on the centering shaft.

[0012] According to the preferred technical solution of the utility model, a shaft shoulder is provided on the middle part of the driving shaft, a through hole adapted to the shaft shoulder is provided on the positioning seat, a semicircular groove is provided on the shaft shoulder, and a plurality of steel balls are evenly distributed in the groove.

[0013] According to the preferred technical solution of the utility model, left-handed external threads and right-handed external threads are respectively provided on both sides of the shaft shoulder, the sliding block on the left trapezoidal block is provided with a left-handed threaded hole adapted to the left-handed external thread, and the sliding block on the right trapezoidal block is provided with a right-handed threaded hole adapted to the right-handed external thread.

[0014] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solutions, and the advantages brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the present invention, other technical features included in the technical solutions, and the advantages brought about by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded stereoscopic schematic diagram of the utility model.

[0016] Figure 2 It is a cross-sectional view of the utility model.

[0017] Explanation of the accompanying numbers: 01. Transition plate, 02. Transmission body, 04. Left trapezoidal block, 05. Right trapezoidal block, 06. Drive shaft, 07. Sliding groove, 08. Mounting groove, 09. Sliding block, 10. Connecting seat, 11. Tooth plate, 12. Guide plate, 13. Guide groove, 14. Positioning seat, 15. Top seat, 16. Mounting hole, 17. Through hole, 18. Centering shaft, 19. Spring, 20. Retaining ring, 21. Shoulder, 22. Groove, 23. Left-handed external thread, 24. Right-handed external thread. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1-2 As shown, the self-centering vise of the present invention includes a transition plate 01 for installation on external processing equipment. A transmission body 02 is fixedly mounted on the transition plate 01 via fasteners. A centering assembly and a left trapezoidal block 04 and a right trapezoidal block 05 are fixedly mounted at the center of the transmission body 02. A drive shaft 06 is provided within the transmission body 02 to drive the left and right trapezoidal blocks 04 and 05 to move synchronously toward and against each other. The drive shaft 06 is rotatably mounted on the centering assembly. During use, the operator places a workpiece on the centering assembly to perform preliminary positioning on the workpiece. Then, by rotating the drive shaft 06, the left and right trapezoidal blocks 04 and 05 are driven to move synchronously toward the centering assembly to clamp the workpiece. This achieves both clamping and positioning of the workpiece.

[0020] The transmission body 02 is provided with a horizontal sliding groove 07 that passes through the centering assembly. The centering assembly is provided with a vertical mounting groove 08 in the middle, and the mounting groove 08 and the sliding groove 07 are connected. The centering assembly is fixedly installed in the mounting groove 08 by fasteners, and the left trapezoidal block 04 and the right trapezoidal block 05 are both slidably arranged in the sliding groove 07.

[0021] It should be noted that the left trapezoidal block 04 and the right trapezoidal block 05 have the same structure. The left trapezoidal block 04 includes a sliding block 09 slidably mounted within a sliding slot 07 and a connecting base 10 located above the transmission body 02. The connecting base 10 and the sliding block 09 are fixedly connected through an integral molding process. A tooth plate 11 is fixed to the top of the connecting base 10 via fasteners. When clamping a workpiece, the tooth plate 11 is used to provide the clamping force.

[0022] The two sides of the sliding block 09 are set on the guide plate 12, and the two side walls of the sliding groove 07 are provided with guide grooves 13 adapted to the guide plates 12. Through the cooperation of the guide plates 12 and the guide grooves 13, the left trapezoidal block 04 and the right trapezoidal block 05 are installed in the sliding groove 07 and move.

[0023] The centering assembly includes a positioning seat 14 installed in the mounting groove 08 and a top seat 15 located on the transmission body 02. The positioning seat 14 and the top seat 15 are fixedly installed on the transmission body 02 by fasteners. The top seat 15 abuts against the positioning seat 14. The above-mentioned drive shaft 06 is rotatably mounted on the positioning seat 14. The top seat 15 is provided with a mounting hole 16 and a through hole 17 coaxially arranged with the mounting hole 16. The diameter of the mounting hole 16 is larger than the diameter of the through hole 17. A centering shaft 18 is provided in the mounting hole 16. The end of the centering shaft 18 passes through the through hole 17 and extends to the outside of the top seat 15. A spring 19 is sleeved on the centering shaft 18. The spring 19 is located in the mounting hole 16. One end of the spring 19 abuts against the centering shaft 18, and the other end abuts against the top surface of the positioning seat 14. When the centering shaft 18 is pressed to move toward the positioning seat 14, the spring 19 is compressed. After the pressing force is removed, the centering shaft 18 moves upward under the action of the spring 19 , so that the centering shaft 18 is elastically mounted on the positioning seat 14 .

[0024] A retaining ring 20 adapted to the mounting hole 16 is provided on the centering shaft 18. The retaining ring 20 is located in the mounting hole 16, and the above-mentioned spring 19 abuts against the retaining ring 20 and is sleeved on the centering shaft 18.

[0025] A shoulder 21 is provided on the middle portion of the drive shaft 06. The positioning seat 14 is provided with a through hole adapted to the shoulder 21. The shoulder 21 is provided with a semicircular groove 22. Several steel balls are evenly distributed in the groove 22. The arrangement of the steel balls enables the drive shaft 06 to rotate freely and stably on the positioning seat 14. A left-handed external thread 23 and a right-handed external thread 24 are provided on both sides of the shoulder 21, respectively. The sliding block 09 on the left trapezoidal block 04 is provided with a left-handed threaded hole adapted to the left-handed external thread 23, and the sliding block 09 on the right trapezoidal block 05 is provided with a right-handed threaded hole adapted to the right-handed external thread 24. By providing the left-handed external thread 23 and the right-handed external thread 24 on the drive shaft 06, when the drive shaft 06 rotates, the left trapezoidal block 04 and the right trapezoidal block 05 move synchronously toward and away from each other within the sliding groove 07.

[0026] It should be noted that, for the sake of clarity of description, the fasteners described in this application are any one of screws, bolts, and screws.

[0027] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] The above embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A self-centering vise, characterized in that: It includes a transition disk and a transmission body fixedly installed, a centering assembly and a left trapezoidal block and a right trapezoidal block located on both sides of the centering assembly are fixedly installed in the middle of the transmission body, a driving shaft for driving the left trapezoidal block and the right trapezoidal block to move synchronously toward and oppositely, the driving shaft is rotatably installed on the centering assembly, the centering assembly includes a positioning seat installed in the mounting groove and a top seat located on the transmission body, the top seat is fixedly installed on the transmission body; the top seat abuts against the positioning seat; the driving shaft is rotatably installed on the positioning seat, a centering shaft is elastically installed on the top seat, a mounting hole and an interlaced hole coaxially arranged with the mounting hole are provided in the top seat, the diameter of the mounting hole is larger than the diameter of the interlaced hole, a centering shaft is provided in the mounting hole, and the end of the centering shaft passes through the interlaced hole and extends to the outside of the top seat; a spring is sleeved on the centering shaft, the spring is located in the mounting hole, one end of the spring abuts against the centering shaft, and the other end abuts against the top surface of the positioning seat.

2. The self-centering vise according to claim 1, characterized in that: A sliding groove that passes through the centering assembly is horizontally arranged on the transmission body; a mounting groove is vertically arranged in the middle of the centering assembly, and the mounting groove and the sliding groove are connected through; the centering assembly is fixedly installed in the mounting groove by fasteners, and the left trapezoidal block and the right trapezoidal block are both slidably arranged in the sliding groove.

3. The self-centering vise according to claim 2, characterized in that: The left trapezoidal block includes a sliding block slidably installed in the sliding groove and a connecting seat located above the transmission body, the connecting seat is fixedly connected to the sliding block; a tooth plate is fixedly installed on the top of the connecting seat through a fastener.

4. The self-centering vise according to claim 3, characterized in that: Guide plates are arranged on both sides of the sliding block, and guide grooves adapted to the guide plates are arranged on both side walls of the sliding groove.

5. The self-centering vise according to claim 1, characterized in that: A retaining ring adapted to the mounting hole is provided on the centering shaft; the retaining ring is located in the mounting hole, and the spring abuts against the retaining ring and is sleeved on the centering shaft.

6. The self-centering vise according to claim 5, characterized in that: A shaft shoulder is arranged on the middle part of the driving shaft, a through hole adapted to the shaft shoulder is arranged on the positioning seat, a semicircular groove is arranged on the shaft shoulder, and a plurality of steel balls are evenly distributed in the groove.

7. The self-centering vise according to claim 6, characterized in that: Left-handed external threads and right-handed external threads are respectively provided on both sides of the shaft shoulder. The sliding block on the left trapezoidal block is provided with a left-handed threaded hole adapted to the left-handed external threads, and the sliding block on the right trapezoidal block is provided with a right-handed threaded hole adapted to the right-handed external threads.

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