Swing positioner for clamp

Abstract

The utility model discloses a swing positioner used on a clamp. The swing positioner comprises a cylinder body, a main piston rod, a support and a positioning needle. A first through hole and a second through hole are formed in the cylinder body, and a guide assembly is arranged on the cylinder body; the main piston rod can rotate back and forth and can be axially and movably arranged in the cylinder body back and forth, the front end of the main piston rod forwards extends out of the cylinder body, the rear end of the main piston rod is located in the cylinder body, a main piston seal is arranged at the rear end of the main piston rod, and the inner space of the cylinder body is divided into a front cavity and a rear cavity which are sealed with each other by the main piston seal; the guide assembly and the path guide groove are matched for guiding, so that the main piston rod can rotate back and forth and axially move back and forth, the positioning needle is matched and adopted, the positioning needle synchronously moves along with the main piston rod, the positioning needle can swing up and down according to needs, the overall structure is small in size, the occupied installation space is small, and after the positioning needle swings down, the positioning needle can swing up and down. And the machining operation of the workpiece cannot be hindered, and convenience is brought to the machining operation.

Description

Technical Field

[0001] The utility model relates to the field of fixture and tooling technology, in particular to a swing positioner used on a fixture. Background Art

[0002] A vise is a tool that uses a screw or other mechanism to move its jaws relative to each other to hold a workpiece. A vise generally consists of a base, a body, fixed and movable jaws, and a transmission mechanism to move the movable jaw. Depending on the application, there are two types of vises: bench vises and machine vises. A bench vise is mounted on a benchtop and allows the worker to clamp workpieces for machining operations such as sawing and filing. A bench vise typically has high, arched jaws, and the body can be rotated and tightened freely on the base. A machine vise, also known as a flat-nose vise, is a machine tool accessory and is typically mounted on the workbench of machine tools such as milling machines, drilling machines, shapers, and surface grinders. Compared to a bench vise, a machine vise has wider, lower jaws, greater clamping force, and requires higher precision. Machine vises come in various types, categorized by accuracy as standard or precision. Precision vises are used on finishing machines such as surface grinders and boring machines. Machine vises can be divided into rotary type with base, fixed type without base and tiltable type according to their structure.

[0003] Current vise clamps require a positioner to locate the workpiece during use. Only after the workpiece is positioned can it be clamped and subsequently processed. The existing positioner used in the clamp consists primarily of a positioning block and a cylinder that drives the block horizontally. This type of positioner is relatively bulky, taking up a large amount of installation space and potentially hindering workpiece processing. Therefore, improvements are needed to improve current positioners. Utility Model Content

[0004] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a swing positioner for a fixture, which can effectively solve the problem that the existing positioner occupies a large space and easily hinders the processing of the workpiece.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The cam is secured to the front of the main piston rod and is secured to a position adjacent to the cam, with the cam being secured to the rear of the main piston rod and being secured to the cam face.

[0007] As a preferred solution, the two path guide grooves are radially symmetrically arranged, and a guide component is provided for each path guide groove to better guide the main piston rod so that the movement is smoother and more stable.

[0008] As a preferred solution, a mounting hole is provided on the cylinder body, and the guide assembly includes a machine screw, a positioning steel ball and a spring. The machine screw is fixed in the mounting hole, the positioning steel ball is adapted to and rests in the path guide groove, and the two ends of the spring are respectively resting between the machine screw and the positioning steel ball. The structure is simple, the installation is convenient, the guidance is smooth, and it is not prone to jamming.

[0009] As a preferred solution, a guide hole is provided inside the rear end of the cylinder body, and the rear end of the main piston rod is adapted to the guide hole. The main piston rod moves back and forth under the guidance of the guide hole. The mounting hole is connected to the guide hole, and the movement is smoother and more precise.

[0010] As a preferred solution, the cylinder body includes a main body and a guide sleeve, the guide sleeve seals the front end opening of the main body, the guide sleeve is fitted over the outside of the main piston rod, a first sealing ring is sandwiched between the outer wall of the guide sleeve and the inner wall of the front end opening of the main body, a second sealing ring, a guide ring and a dust seal are sandwiched between the inner wall of the guide sleeve and the outer wall of the main piston rod, the second sealing ring, the guide ring and the dust seal are arranged in sequence from back to front, further making the main piston rod move smoothly and reliably.

[0011] As a preferred solution, the bracket includes a front part and a rear part that are integrally connected, a first connecting hole is opened at the center of the front part, a second connecting hole is opened at the center of the rear part, a clamping groove is formed between the rear part and the front part, the clamping groove is connected to the first connecting hole and the second connecting hole, and a clamping hole is formed in the clamping groove to cooperate with the positioning needle for fixation, a first fixing hole is opened on the front end face of the main piston rod, a tightening screw passes through the first connecting hole, the clamping groove and the second connecting hole from front to back in sequence and is screwed and fixed with the first fixing hole, which is easy to disassemble and assemble.

[0012] As a preferred solution, the rear end surface of the rear part is recessed with a positioning groove, and the positioning grooves are two arranged in a cross shape. Both positioning grooves are connected to the second connecting hole. The front end surface of the main piston rod is convexly provided with a positioning part, and the positioning part is embedded in one of the positioning grooves for positioning. The installation is stable and can be reversed, and the installation is flexible and convenient.

[0013] As a preferred solution, the positioning pin is Z-shaped.

[0014] As a preferred solution, a support frame is fixed on the cylinder body, and a first adjustment hole is opened on the support frame. The first adjustment hole extends laterally so that the positioner as a whole can be installed and fixed on the vise clamp in a laterally adjustable position by bolts, which facilitates installation.

[0015] As a preferred solution, the outer wall of the cylinder body is recessed with a guide groove and a plurality of second fixing holes, the guide groove extends laterally, and the plurality of second fixing holes are distributed on the sides of the guide groove. A guide portion is convexly provided on the bottom surface of the support frame, and the guide portion is embedded in the guide groove and is adjustable along the guide groove. A plurality of second adjustment holes are opened on the support frame, and the plurality of second adjustment holes all extend laterally. A plurality of fixing screws pass through the corresponding second adjustment holes and are screwed and fixed with the corresponding second fixing holes, so that the cylinder body and the support frame can be installed and fixed with a laterally adjustable position, which further facilitates installation and use.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0017] By utilizing the guide assembly and the path guide groove to guide, the main piston rod can rotate back and forth and move axially back and forth, and is combined with a positioning needle, which moves synchronously with the main piston rod, so that the positioning needle can be swung up and down as needed. The overall structure is small in size and occupies a small installation space. After the positioning needle is swung down, it will not cause any obstruction to the processing operation of the workpiece, bringing convenience to the processing operation.

[0018] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an assembly perspective view of a preferred embodiment of the present utility model;

[0020] Figure 2 This is a schematic three-dimensional assembly diagram of a preferred embodiment of the present invention from another angle;

[0021] Figure 3This is an exploded view of a preferred embodiment of the present utility model;

[0022] Figure 4 This is an exploded view from another angle of the preferred embodiment of the present utility model;

[0023] Figure 5 It is a cross-sectional view of a preferred embodiment of the present utility model;

[0024] Figure 6 It is a three-dimensional diagram of the preferred embodiment of the present utility model in use.

[0025] Description of the accompanying drawings:

[0026] 10. Cylinder 11. Main body

[0027] 12. Guide sleeve 13. First sealing ring

[0028] 14. Second sealing ring 15. Guide ring

[0029] 16. Dust seal 101, first through hole

[0030] 102, second through hole 103, mounting hole

[0031] 104, guide hole 105, guide groove

[0032] 106, second fixing hole 20, main piston rod

[0033] 21. Main piston seal 22. Path guide groove

[0034] 23. First fixing hole 24. Positioning portion

[0035] 201. Front cavity 202. Rear cavity

[0036] 30. Bracket 31. Front

[0037] 32. Rear 33. Tightening screw

[0038] 301, first connection hole 302, second connection hole

[0039] 303, clamping groove 304, clamping hole

[0040] 305, positioning groove 40, positioning pin

[0041] 41. Fixed portion 42. Extended portion

[0042] 43. Abutment portion 50. Guide assembly

[0043] 51. Machine screw 52. Positioning steel ball

[0044] 53, spring 60, workpiece

[0045] 70. Support frame 71. First adjustment hole

[0046] 72. Guide portion 73. Second adjustment hole

[0047] 74. Fixing screw 81. Bolt

[0048] 100. Vise clamp. DETAILED DESCRIPTION

[0049] Please refer to Figures 1 to 6 As shown, it shows the specific structure of a preferred embodiment of the present utility model, including a cylinder body 10, a main piston rod 20, a bracket 30 and a positioning needle 40.

[0050] The cylinder body 10 is provided with a first through hole 101 and a second through hole 102, and is provided with a guide assembly 50. Specifically, the cylinder body 10 includes a main body 11 and a guide sleeve 12. The guide sleeve 12 seals the front end opening of the main body 11, and a first sealing ring 13 is sandwiched between the outer wall of the guide sleeve 12 and the inner wall of the front end opening of the main body 11. The cylinder body 10 is provided with a mounting hole 103, which is located on the main body 11. The rear end of the cylinder body 10 has a guide hole 104 inside, and the mounting hole 103 is connected to the guide hole 103. In addition, the outer wall of the cylinder body 10 is recessed with a guide groove 105 and a plurality of second fixing holes 106. The guide groove 105 extends horizontally, and the plurality of second fixing holes 106 are distributed beside the guide groove 105.

[0051] The main piston rod 20 can rotate back and forth and can be axially moved back and forth in the cylinder body 10. The front end of the main piston rod 20 extends forward from the cylinder body 10, and the rear end of the main piston rod 20 is located in the cylinder body 10. The rear end of the main piston rod 20 is provided with a main piston seal 21. The main piston seal 21 separates the internal space of the cylinder body 10 into a front cavity 201 and a rear cavity 202 that are sealed from each other. The front cavity 201 is connected to the first through hole 101, and the rear cavity 202 is connected to the second through hole 102. The rear end of the main piston rod 20 is recessed with a spirally extending path guide groove 22. The aforementioned guide assembly 50 extends into the path guide groove 22 and guides the main piston rod 20 to rotate back and forth. Specifically, the guide assembly 50 includes a screw 51, a positioning steel ball 52, and a spring 53. The screw 51 is fixed in the mounting hole 103 and seals the mounting hole 103. The positioning steel ball 52 is adapted to the path guide groove 22 and abuts against the path guide groove 22. The two ends of the spring 53 are respectively abutted between the screw 51 and the positioning steel ball 52. The structure is simple, easy to install, and the guidance is smooth and not prone to jamming. In this embodiment, the path guide grooves 22 are two radially symmetrically arranged, and a guide assembly 50 is provided for each path guide groove 22 to better guide and make the main piston rod 20 move more smoothly and stably. Furthermore, the rear end of the main piston rod 20 is adapted to the guide hole 104, allowing the main piston rod 20 to move back and forth under the guidance of the guide hole 104, making the movement more stable. Furthermore, the guide sleeve 12 is fitted over the main piston rod 20. A second sealing ring 14, a guide ring 15, and a dust seal 16 are sandwiched between the inner wall of the guide sleeve 12 and the outer wall of the main piston rod 20. These second sealing ring 14, guide ring 15, and dust seal 16 are arranged in a sequentially spaced arrangement from back to front, further ensuring the smooth and reliable movement of the main piston rod 20. Furthermore, a first fixing hole 23 is formed on the front end surface of the main piston rod 20, and a positioning portion 24 is protruded from the front end surface of the main piston rod 20.

[0052] The bracket 30 is fixed to the front end of the main piston rod 20 and moves synchronously with the main piston rod 20. Specifically, the bracket 30 includes a front portion 31 and a rear portion 32 that are integrally formed and connected. A first connecting hole 301 is formed in the center of the front portion 31, and a second connecting hole 302 is formed in the center of the rear portion 32. A clamping groove 303 is formed between the rear portion 32 and the front portion 31. The clamping groove 303 is connected to the first connecting hole 301 and the second connecting hole 302. A clamping hole 304 is formed in the clamping groove 303 to cooperate with the positioning pin 40 for fixation. A tightening screw 33 passes through the first connecting hole 301, the clamping groove 303, and the second connecting hole 302 from front to back, and is screwed into the first fixing hole 23 for fixation, making assembly and disassembly simple. In addition, the rear end surface of the rear portion 32 is recessed with a positioning groove 305. The positioning grooves 305 are two and arranged in a cross shape. Both positioning grooves 305 are connected to the second connecting hole 302. The positioning portion 24 is embedded in one of the positioning grooves 305 for positioning. The installation is stable and can be reversed for installation. The installation is flexible and convenient.

[0053] The positioning pin 40 is fixed to the bracket 30 and moves synchronously with the bracket 30. In this embodiment, the positioning pin is Z-shaped and includes a fixed portion 41, an extending portion 42, and an abutting portion 43, which are integrally formed and bent and connected in sequence. The fixed portion 41 is inserted into the clamping hole 304 and is clamped and fixed. The tail end of the abutting portion 43 cooperates and abuts against the workpiece 60.

[0054] In addition, a support frame 70 is fixed to the cylinder body 10. The support frame 70 has a first adjustment hole 71 extending laterally, so that the positioner can be fixed to the vise 100 via a bolt 81 so that the positioner can be adjusted laterally, which facilitates installation. In addition, a guide portion 72 is provided on the bottom surface of the support frame 70. The guide portion 72 is embedded in the guide groove 105 and is adjustable along the guide groove 105, so that the cylinder body 10 and the support frame 70 can be better positioned. The support frame 70 has a plurality of second adjustment holes 73 extending laterally, and a plurality of fixing screws 74 pass through the corresponding second adjustment holes 73 and are screwed into the corresponding second fixing holes 106 to be fixed, so that the cylinder body 10 and the support frame 70 can be installed and fixed laterally, further facilitating installation and use.

[0055] The method of using this embodiment is described in detail as follows:

[0056] When using, Figure 6As shown, the utility model is installed and fixed on the vise clamp 100, and the first through hole 101 and the second through hole 102 are connected to the external air source. When working, first, the compressed gas is allowed to enter the rear cavity 202 from the second through hole 102. Under the action of the compressed gas, the main piston rod 20 moves forward. During the forward movement, the guide assembly 50 causes the main piston rod 20 to rotate in the forward direction, so that the bracket 30 and the positioning pin 40 are swung up. When the main piston rod 20 moves forward to the position, the positioning pin 40 is also swung into place. Next, the workpiece 60 to be processed is placed on the vise clamp 100, and the workpiece 60 is brought close to the positioning pin 40. When the workpiece 60 contacts the abutment portion 43 of the positioning pin 40, the positioning is completed. Then, the workpiece 60 is clamped and fixed by the vise clamp 100. Next, compressed gas enters the front cavity 201 through the first through-hole 101, while compressed gas in the rear cavity 202 is discharged through the second through-hole 102. Under the action of the compressed gas, the main piston rod 20 moves backward. During this backward movement, the guide assembly 50 causes the main piston rod 20 to rotate in the opposite direction, causing the bracket 30 and the positioning pin 40 to swing downward. When the main piston rod 20 moves backward into position, the positioning pin 40 also swings downward into position. At this point, machining can begin on the workpiece 60 secured to the vise 100, without the positioner hindering the machining process.

[0057] The design focus of the utility model is that the main piston rod can rotate back and forth and move axially back and forth by utilizing the guide assembly and the path guide groove for guidance, and the positioning needle is used in conjunction with the main piston rod, so that the positioning needle can be swung up and down as needed. The overall structure is small in size and occupies a small installation space. After the positioning needle is swung down, it will not cause any obstruction to the processing operation of the workpiece, thereby bringing convenience to the processing operation.

[0058] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A swing positioner for a fixture, characterized by: The cam is secured to the front of the cylinder and has a lockhole that is fixed to the top of the cylinder head and locks the cylinder head in a manner that the cam, when in use, is locked. The cam is secured to the front of the cylinder head and locks the cylinder head in a manner that the cam is locked.

2. The swing positioner for a fixture according to claim 1, characterized in that: There are two path guide grooves arranged in radial symmetry, and a guide component is provided for each path guide groove.

3. The swing positioner for a fixture according to claim 1 or 2, characterized in that: A mounting hole is provided on the cylinder body, and the guide assembly includes a machine screw, a positioning steel ball and a spring. The machine screw is fixed in the mounting hole, the positioning steel ball is adapted to the path guide groove and rests in the path guide groove, and the two ends of the spring are respectively rested between the machine screw and the positioning steel ball.

4. The swing positioner for a fixture according to claim 3, characterized in that: A guide hole is provided inside the rear end of the cylinder body. The rear end of the main piston rod is adapted to the guide hole. The main piston rod moves forward and backward under the guidance of the guide hole. The mounting hole is connected to the guide hole.

5. The swing positioner for a fixture according to claim 1, characterized in that: The cylinder body includes a main body and a guide sleeve, the guide sleeve seals the front end opening of the main body, the guide sleeve is fitted over the main piston rod, a first sealing ring is sandwiched between the outer wall of the guide sleeve and the inner wall of the front end opening of the main body, a second sealing ring, a guide ring and a dust seal are sandwiched between the inner wall of the guide sleeve and the outer wall of the main piston rod, and the second sealing ring, guide ring and dust seal are arranged in sequence from back to front.

6. The swing positioner for a fixture according to claim 1, characterized in that: The bracket includes a front part and a rear part that are integrally connected, a first connecting hole is opened at the center of the front part, a second connecting hole is opened at the center of the rear part, a clamping groove is formed between the rear part and the front part, the clamping groove is connected to the first connecting hole and the second connecting hole, and a clamping hole is formed in the clamping groove to cooperate with the positioning needle for fixation, the front end face of the main piston rod is opened with a first fixing hole, a tightening screw passes through the first connecting hole, the clamping groove and the second connecting hole from front to back in sequence and is screwed and fixed with the first fixing hole.

7. The swing positioner for a fixture according to claim 6, characterized in that: The rear end surface of the rear part is concavely provided with a positioning groove, and the positioning grooves are two arranged in a cross shape. Both positioning grooves are connected to the second connecting hole. The front end surface of the main piston rod is convexly provided with a positioning part, and the positioning part is embedded in one of the positioning grooves for positioning.

8. The swing positioner for a fixture according to claim 1, characterized in that: The positioning pin is Z-shaped.

9. The swing positioner for a fixture according to claim 1, characterized in that: A support frame is fixed on the cylinder body. A first adjustment hole is opened on the support frame and extends horizontally.

10. The swing positioner for a fixture according to claim 9, characterized in that: The outer wall of the cylinder body is recessed with a guide groove and a plurality of second fixing holes, the guide groove extends laterally, and the plurality of second fixing holes are distributed on the sides of the guide groove. A guide portion is convexly provided on the bottom surface of the support frame, and the guide portion is embedded in the guide groove and is adjustable along the guide groove. A plurality of second adjustment holes are opened on the support frame, and the plurality of second adjustment holes all extend laterally. A plurality of fixing screws pass through the corresponding second adjustment holes and are screwed and fixed with the corresponding second fixing holes.

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