A die structure with adjustable radius

Abstract

The utility model provides a radius adjustable's die structure, include: casing, the casing is opened with the center hole, the axle of center hole place constructs center axis, clamping piece, clamping piece with center axis is the benchmark and is circularly arrayed and is slid to set up on casing, cutting block, cutting block is connected on clamping piece, cutting part of cutting block is towards center axis, regulation and control unit, regulation and control unit sets up on casing, regulation and control unit includes control lever, carousel and sets up on arc gear rack of carousel, the utility model provides a radius adjustable's die structure, detects the diameter of work piece, according to work piece's diameter rotation control lever, with transmission wheel engagement arc gear rack drive carousel rotation, with the rotation of carousel, to resist push link and make clamping piece and cutting block slide towards center axis, and then adapt to the diameter of work piece, in this way improve the processing efficiency and adaptability to work piece outer thread.

Description

Technical Field

[0001] This utility model relates to the field of die technology, and more specifically to a die structure with an adjustable radius. Background Technology

[0002] A die is a tool for machining threads. It is often used in conjunction with a wrench. During machining, the wrench is used to align the axis of the die with the center axis of the workpiece. The die is then pressed against the workpiece and rotated to form a threaded structure on the surface of the workpiece.

[0003] Dies are usually round dies, which are ring-shaped with an inner and outer ring. The outer ring is easy to assemble onto a wrench, while the inner ring is designed with a cutting edge. Different specifications of dies are selected according to the diameter of the workpiece. However, when machining workpieces with various diameters, it is necessary to frequently disassemble and replace the dies. Finding and replacing them is time-consuming, which will greatly reduce the efficiency of machining external threads. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies, and to solve the problem that when processing multiple workpieces of different specifications simultaneously, different dies are required based on the diameter of the workpiece, which necessitates frequent changes and thus affects the thread processing efficiency.

[0005] To achieve the above objectives, this utility model can be implemented through the following technical solution: a die structure with an adjustable radius, comprising:

[0006] The housing shown has a central hole, and a central axis is constructed at the center of the central hole;

[0007] Clamping blocks are slidably arranged in a circular array on the housing with the central axis as a reference;

[0008] A cutting block, which is snapped onto the clamping block, with the cutting portion of the cutting block facing the central axis;

[0009] A control unit is disposed on the housing. The control unit includes a control lever, a turntable, and an arc-shaped rack disposed on the turntable. One end of the control lever is provided with a transmission wheel that meshes with the arc-shaped rack.

[0010] The turntable has a guide groove, and the clamping block has a connecting rod that cooperates with the guide groove.

[0011] In this embodiment of the utility model, the housing is provided with a guide sleeve and a top cover, and the clamping block is provided with a protrusion that cooperates with the guide sleeve;

[0012] The top cover fits onto the housing to form a sealed assembly cavity, and the clamping block is disposed within the assembly cavity.

[0013] In this embodiment of the utility model, the top cover is provided with a groove that engages with the housing.

[0014] In this embodiment of the utility model, the housing is provided with a retaining ring that cooperates with the guide sleeve.

[0015] In this embodiment of the invention, the number of guide grooves and connecting rods is the same as the number of clamping blocks.

[0016] In this embodiment of the utility model, at least three sets of clamping blocks are provided.

[0017] In this embodiment of the utility model, a scale tip is provided on one side of the control lever, and a bolt that abuts against the housing is provided on the other side;

[0018] The housing is provided with annular scale lines, and the scale tips cooperate with the annular scale lines.

[0019] In this embodiment of the invention, a bearing is provided between the control rod and the housing.

[0020] In this embodiment of the utility model, the clamping block has a slot, a triangular block that engages with the cutting block is slidably disposed in the slot, and a spring is disposed between the triangular block and the clamping block.

[0021] In this embodiment of the utility model, the clamping block is provided with a locking rod that abuts against the cutting block.

[0022] Compared with the prior art, the advantages of this application are: detecting the diameter of the workpiece, rotating the control lever according to the diameter of the workpiece, driving the turntable to rotate through the meshing of the transmission wheel with the arc rack, and as the turntable rotates, pushing the connecting rod to make the clamping block and cutting block slide towards the central axis, thereby adapting to the diameter of the workpiece, thereby improving the processing efficiency and adaptability of the external thread of the workpiece. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure after the parts are assembled;

[0024] Figure 2 This is a schematic diagram of the overall structure after explosive disassembly of the parts;

[0025] Figure 3 This is a schematic diagram of the stepped cross-sectional structure after the overall parts are assembled;

[0026] Figure 4 It is a half-section plan view of the clamping block.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Housing; 10. Center hole; 11. Center axis; 12. Top cover; 121. Groove; 13. Guide sleeve; 14. Snap ring; 15. Annular scale line; 2. Control unit; 21. Connecting rod; 22. Turntable; 23. Guide groove; 24. Control rod; 241. Scale tip; 242. Bolt; 25. Transmission wheel; 26. Arc rack; 3. Clamping block; 31. Protrusion; 32. Locking rod; 33. Slot; 34. Spring; 35. Triangular block; 4. Cutting block. Detailed Implementation

[0029] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0030] like Figure 1-4 As shown, a tooth structure with an adjustable radius includes:

[0031] The housing 1 shown has a central hole 10, and a central axis 11 is constructed at the center of the central hole 10.

[0032] Clamping block 3 is slidably arranged in a circular array on housing 1 with reference to the central axis 11;

[0033] Cutting block 4 is snapped onto clamping block 3, with the cutting part of cutting block 4 facing the central axis 11;

[0034] The control unit 2 is disposed on the housing 1. The control unit 2 includes a control lever 24, a turntable 22 and an arc-shaped rack 26 disposed on the turntable 22. One end of the control lever 24 is provided with a transmission wheel 25 that meshes with the arc-shaped rack 26.

[0035] The turntable 22 has a guide groove 23, and the clamping block 3 has a connecting rod 21 that cooperates with the guide groove 23.

[0036] Specifically, a cutting block 4 is provided at the inner diameter of the housing 1 to perform external thread processing on the workpiece, while the outer diameter can be mounted on a wrench. When it is necessary to perform external thread processing on workpieces of different specifications, the diameter of the workpiece can be measured and recorded in advance. Then, according to the corresponding workpiece, the control rod 24 is rotated to make the turntable 22 rotate by meshing the arc rack 26 with the transmission wheel 25. At this time, the connecting rod 21 slides on the guide groove 23 to control the clamping block 3 and the cutting block 4 to move closer or further away from the central axis 11 synchronously, thereby adjusting the radius of the die to adapt to the processing of workpieces of different specifications. Furthermore, the more teeth the arc rack 26 has, the higher the corresponding adjustment accuracy of the clamping block 3.

[0037] As a further embodiment of this utility model, the housing 1 is provided with a guide sleeve 13 and a top cover 12, and the clamping block 3 is provided with a protrusion 31 that cooperates with the guide sleeve 13. The top cover 12 is closed on the housing 1 to form a sealed assembly cavity. The clamping block 3 is disposed in the assembly cavity. The assembly sequence of the parts on the housing 1 is as follows: the clamping block 3 is pre-assembled onto the guide sleeve 13 so that the connecting rod 21 cooperates with the guide groove 23, then the guide sleeve 13 is snapped onto the housing 1, and then the top cover 12 is closed on the housing 1, thereby completing the assembly of the housing 1.

[0038] As a further embodiment of this utility model, the top cover 12 is provided with a groove 121 that engages with the housing 1. The groove 121 improves the connection between the top cover 12 and the housing 1, thereby improving the fixing effect on the guide sleeve 13.

[0039] As a further embodiment of this utility model, the housing 1 is provided with a retaining ring 14 that cooperates with the guide sleeve 13. The retaining ring 14 is made of rubber. The guide sleeve 13 is fixed to the housing 1 by the retaining ring 14, and the guide sleeve 13 is detachable.

[0040] As a further embodiment provided by this utility model, the number of guide grooves 23 and connecting rods 21 is the same as that of clamping blocks 3, and the guide grooves 23, connecting rods 21 and clamping blocks 3 correspond one-to-one, so that the extension and retraction movements of clamping blocks 3 are performed synchronously.

[0041] As a further embodiment of this utility model, at least three sets of clamping blocks 3 are provided. The more clamping blocks 3 there are, the longer the service life of the corresponding cutting blocks 4 will be. Multiple cutting blocks 4 are provided to reduce the wear and tear of each cutting block 4 during the processing.

[0042] As a further embodiment of this utility model, a scale tip 241 is provided on one side of the control lever 24, and a bolt 242 that abuts against the housing 1 is provided on the other side. The scale tip 241 is used to control the rotation angle of the control lever 24. Then, when the rotation angle of the control lever 24 is determined, the rotatable bolt 242 abuts against the housing 1, so that the control lever 24 is fixed, that is, the cutting block 4 on the clamping block 3 is fixed.

[0043] The housing 1 is provided with an annular scale line 15, and the scale tip 241 cooperates with the annular scale line 15. When the control rod 24 rotates, the rotation angle of the control rod 24 can be controlled by the relative position of the scale tip 241 and the annular scale line 15, thereby controlling the length of the clamping block 3 extending or retracting.

[0044] As a further embodiment of this utility model, a bearing is provided between the control lever 24 and the housing 1, and the bearing is snapped onto the housing 1 to improve the rotational stability of the control lever 24.

[0045] As a further embodiment of this utility model, the clamping block 3 is provided with a slot 33, and a triangular block 35 that engages with the cutting block 4 is slidably disposed in the slot 33. A spring 34 is provided between the triangular block 35 and the clamping block 3. The cutting block 4 is detachably disposed on the clamping block 3. When disassembling and replacing, the cutting block 4 can be inserted into the slot 33. At this time, the triangular block 35 engages with the cutting block 4 under the pushing of the spring 34, thereby pre-fixing the cutting block 4.

[0046] As a further embodiment of this utility model, the clamping block 3 is provided with a locking rod 32 that abuts against the cutting block 4. When the cutting block 4 is fixed to the clamping block 3, the locking rod 32 rotates to contact and fix the cutting block 4. The locking rod 32 and the clamping block 3 are threadedly connected.

[0047] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0048] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A tooth structure with an adjustable radius, characterized in that, include: The housing shown has a central hole, and a central axis is constructed at the center of the central hole; Clamping blocks are slidably arranged in a circular array on the housing with the central axis as a reference; A cutting block, which is snapped onto the clamping block, with the cutting portion of the cutting block facing the central axis; A control unit is disposed on the housing. The control unit includes a control lever, a turntable, and an arc-shaped rack disposed on the turntable. One end of the control lever is provided with a transmission wheel that meshes with the arc-shaped rack. The turntable has a guide groove, and the clamping block has a connecting rod that cooperates with the guide groove.

2. The adjustable-radius die structure according to claim 1, characterized in that, The housing is provided with a guide sleeve and a top cover, and the clamping block is provided with a protrusion that cooperates with the guide sleeve; The top cover fits onto the housing to form a sealed assembly cavity, and the clamping block is disposed within the assembly cavity.

3. The adjustable-radius die structure according to claim 2, characterized in that, The top cover is provided with a groove that engages with the housing.

4. The adjustable-radius die structure according to claim 2, characterized in that, The housing is provided with a retaining ring that cooperates with the guide sleeve.

5. The adjustable-radius die structure according to claim 1, characterized in that, The number of guide grooves and connecting rods is the same as the number of clamping blocks.

6. The adjustable-radius die structure according to claim 5, characterized in that, At least three sets of clamping blocks are provided.

7. The adjustable-radius die structure according to claim 1, characterized in that, The control lever has a graduated tip on one side and a bolt that abuts against the housing on the other side. The housing is provided with annular scale lines, and the scale tips cooperate with the annular scale lines.

8. The adjustable-radius die structure according to claim 1, characterized in that, A bearing is provided between the control rod and the housing.

9. The adjustable-radius die structure according to claim 1, characterized in that, The clamping block has a slot, and a triangular block that engages with the cutting block is slidably disposed in the slot. A spring is disposed between the triangular block and the clamping block.

10. The adjustable-radius die structure according to claim 9, characterized in that, The clamping block is provided with a locking rod that abuts against the cutting block.

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