A batch chamfering tool for a letter pin

Abstract

The utility model provides a kind of word nail batch chamfering processing frock, including base, the inside of base is equipped with multiple installation grooves, the downside of the inner wall of installation groove is rotatably connected with pivot, fixedly connected with worm wheel on the pivot, the side of base is rotatably connected with the worm that a plurality of worm wheel engages, the upper end of worm wheel is fixedly connected with support ring, the outside of support ring is threadedly cooperated with threaded sleeve, the inner wall of threaded sleeve is fixedly connected with extrusion boss, the inner wall of installation groove is fixedly connected with connecting sleeve. By being provided with worm gear drive structure and limit ball cooperation structure, rotating knob can drive worm drive multiple worm wheel synchronous rotation, in turn make threaded sleeve lift, extrusion boss of the inner wall of threaded sleeve can promote limit ball and the ring groove outside guide sleeve cooperation or separate, realize the quick fixing and disassembly of guide sleeve, improve the adaptability of frock to different specifications word nail processing.

Description

Technical Field

[0001] This utility model relates to the field of pin processing technology, specifically a tooling for batch chamfering of pins. Background Technology

[0002] In the field of machining, pins are a common type of small, slender component, widely used in stationery, signage and other products. Their ends usually need to be chamfered to remove burrs and ensure safety during assembly or use. To improve processing efficiency, batch chamfering is often used, which requires special tooling to position and fix multiple pins to ensure that the pins are stable in posture during processing, thereby ensuring the consistency of chamfer dimensions.

[0003] Currently, the existing tooling for batch chamfering of letter pins has an unreasonable positioning structure design. The letter pins are prone to axial or radial displacement during processing, resulting in low chamfering dimensional accuracy and poor consistency, which affects product quality. In addition, the guide sleeve and the tooling body are mostly fixedly connected or use a complex bolt fastening structure. When it is necessary to process letter pins of different diameters and lengths, it is necessary to disassemble multiple parts to replace the guide sleeve, which is cumbersome and time-consuming, resulting in low production efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a tooling for batch chamfering of pins to solve the problems mentioned in the background. This utility model has a novel structure. By setting a worm gear transmission structure and a limiting ball engagement structure, rotating the knob can drive the worm to drive multiple worm gears to rotate synchronously, thereby raising and lowering the threaded sleeve. The extrusion boss on the inner wall of the threaded sleeve can push the limiting ball to engage or disengage with the annular groove on the outer side of the guide sleeve, realizing the rapid fixing and disassembly of the guide sleeve and improving the adaptability of the tooling to the processing of pins of different specifications.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tooling for batch chamfering of pins, comprising a base, the base having multiple mounting grooves inside, a rotating shaft rotatably fitted to the lower side of the inner wall of the mounting groove, a worm gear fixedly connected to the rotating shaft, a worm engaging with the multiple worm gears rotatably fitted to one side of the base, a support ring fixedly connected to the upper end of the worm gears, a threaded sleeve threadedly fitted to the outer side of the support ring, a pressing boss fixedly connected to the inner wall of the threaded sleeve, a connecting sleeve fixedly connected to the inner wall of the mounting groove, multiple mating grooves provided on the outer circumference of the connecting sleeve, a limit ball provided inside the mating groove, multiple guide sleeves mounted on the upper side of the base, and a pressing mechanism provided inside the base.

[0006] Furthermore, the lower end of the connecting sleeve is located inside the threaded sleeve and mates with the extrusion boss, and the lower end of the guide sleeve extends into the interior of the connecting sleeve.

[0007] Furthermore, anti-foolproof blocks are fixedly connected to both sides of the guide sleeve, and anti-foolproof grooves that cooperate with the anti-foolproof blocks are opened on both sides of the inner wall of the connecting sleeve.

[0008] Furthermore, limit blocks are fixedly connected to both sides of the threaded sleeve, and limit grooves that cooperate with the limit blocks are opened on both sides of the inner wall of the mounting groove.

[0009] Furthermore, a knob is fixedly connected to one end of the worm gear.

[0010] Furthermore, a limiting ring groove is formed on the outer side of the guide sleeve, and multiple limiting balls respectively cooperate with the limiting ring groove and the extrusion boss.

[0011] Furthermore, the extrusion mechanism includes a rectangular groove on the upper side of the base, two cylinders are installed on one side of the inner wall of the rectangular groove, a connecting plate is fixedly connected to the output end of the two cylinders, a plurality of anti-slip pressure blocks are fixedly connected to one side of the connecting plate, and a slot is provided on one side of the inner wall of the guide sleeve.

[0012] Furthermore, the anti-slip pressure block is slidably fitted on one side of the inner wall of the rectangular groove, and one end of the anti-slip pressure block is slidably fitted with the inner wall of the groove.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model, by setting a worm gear transmission structure and a limiting ball matching structure, allows the worm to drive multiple worm gears to rotate synchronously when the knob is turned, thereby raising and lowering the threaded sleeve. The extrusion boss on the inner wall of the threaded sleeve can push the limiting ball to engage or disengage with the annular groove on the outer side of the guide sleeve, realizing the rapid fixing and disassembly of the guide sleeve and improving the adaptability of the tooling to the processing of different specifications of pins.

[0015] 2. This utility model, by setting up a pressing mechanism, has a cylinder in the pressing mechanism that can drive the connecting plate to move multiple anti-slip pressure blocks synchronously. After the anti-slip pressure blocks are embedded in the slots of the guide sleeve, they can form a stable radial pressing on the pins. This synchronous pressing method can prevent the pins from radially shaking or axially shifting during chamfering. At the same time, the anti-slip design further enhances the stability of the positioning, greatly improves the accuracy of chamfering, ensures the consistency of chamfer dimensions, and improves the processing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a tooling for batch chamfering of letter pins according to this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the base of a tooling for batch chamfering of pins according to this utility model;

[0018] Figure 3 This is a schematic diagram of the worm gear connection structure of a tooling for batch chamfering of letter pins according to this utility model;

[0019] Figure 4 This is an exploded view of the connecting sleeve installation structure of a tooling for batch chamfering of letter pins according to this utility model;

[0020] Figure 5 This is a schematic diagram of the extrusion mechanism structure of a tooling for batch chamfering of letter pins according to this utility model;

[0021] Figure 6 This is a schematic cross-sectional view of the guide sleeve structure of a tooling for batch chamfering of pins according to this utility model.

[0022] In the diagram: 1. Base; 2. Mounting slot; 3. Shaft; 4. Worm gear; 5. Worm; 6. Support ring; 7. Threaded sleeve; 8. Extrusion boss; 9. Connecting sleeve; 10. Mating groove; 11. Limiting ball; 12. Guide sleeve; 13. Anti-fooling block; 14. Anti-fooling groove; 15. Limiting block; 16. Limiting groove; 17. Knob; 18. Limiting ring groove; 19. Extrusion mechanism; 191. Rectangular groove; 192. Cylinder; 193. Connecting plate; 194. Anti-slip pressure block; 195. Slot. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please refer to Figures 1 to 6This utility model provides a technical solution: a tooling for batch chamfering of pins, including a base 1, with multiple mounting grooves 2 inside the base 1, a rotating shaft 3 rotatably fitted on the lower side of the inner wall of the mounting groove 2, a worm gear 4 fixedly connected to the rotating shaft 3, a worm 5 rotatably fitted on one side of the base 1 and meshing with the multiple worm gears 4, a support ring 6 fixedly connected to the upper end of the worm gear 4, a threaded sleeve 7 threadedly fitted on the outer side of the support ring 6, a pressing boss 8 fixedly connected to the inner wall of the threaded sleeve 7, a connecting sleeve 9 fixedly connected to the inner wall of the mounting groove 2, multiple mating grooves 10 provided on the outer circumference of the connecting sleeve 9, a limit ball 11 provided inside the mating groove 10, multiple guide sleeves 12 installed on the upper side of the base 1, and a pressing mechanism 19 provided inside the base 1. Rotating the knob 17 at one end of the worm 5 causes the worm 5 to drive multiple meshing worm wheels 4 to rotate. The worm wheels 4 rotate in the mounting groove 2 via the rotating shaft 3. The support ring 6 at the upper end of the worm wheel 4 rotates with it. Since the threaded sleeve 7 is threadedly connected to the support ring 6, and the limiting blocks 15 on both sides of the threaded sleeve 7 slide in the limiting groove 16 of the mounting groove 2 (limiting circumferential rotation), the threaded sleeve 7 rises and falls axially. The extrusion boss 8 on the inner wall of the threaded sleeve 7 moves synchronously, extruding the limiting ball 11 in the mating groove 10 on the outer side of the connecting sleeve 9. Synchronous control is achieved through the transmission of the worm 5 and multiple worm wheels 4. The rising and falling movement of the threaded sleeve 7 precisely adjusts the extrusion degree of the limiting ball 11, providing a basis for the subsequent fixation of the guide sleeve 12. The operation of the knob 17 improves the adjustment efficiency.

[0025] In this embodiment, the lower end of the connecting sleeve 9 is located inside the threaded sleeve 7 and mates with the extrusion boss 8, while the lower end of the guide sleeve 12 extends into the interior of the connecting sleeve 9. Anti-misalignment blocks 13 are fixedly connected to both sides of the guide sleeve 12, and anti-misalignment grooves 14 mate with the anti-misalignment blocks 13 are provided on both sides of the inner wall of the connecting sleeve 9. Limiting blocks 15 are fixedly connected to both sides of the threaded sleeve 7, and limiting grooves 16 mate with the limiting blocks 15 are provided on both sides of the inner wall of the mounting groove 2. A knob 17 is fixedly connected to one end of the worm gear 5. A limiting ring groove 18 is provided on the outer side of the guide sleeve 12, and multiple limiting balls 11 mate with the limiting ring groove 18 and the extrusion boss 8, respectively. Insert the lower end of the guide sleeve 12 into the connecting sleeve 9. The anti-fooling blocks 13 on both sides of the guide sleeve 12 are embedded in the anti-fooling grooves 14 of the connecting sleeve 9 (ensuring the correct installation direction). When the threaded sleeve 7 is raised and lowered, the pressing boss 8 pushes the limiting ball 11, causing it to partially embed into the limiting ring groove 18 on the outside of the guide sleeve 12, thus completing the fixation of the guide sleeve 12. Rotate the knob 17 in the opposite direction, and the limiting ball 11 will disengage from the limiting ring groove 18, allowing the guide sleeve 12 to be removed. The anti-fooling structure prevents the guide sleeve 12 from being installed backwards. The cooperation between the limiting ball 11 and the limiting ring groove 18 enables the guide sleeve 12 to be quickly installed, removed, and securely fixed, adapting to the processing needs of different specifications of pins. The time for replacing the guide sleeve 12 is greatly shortened.

[0026] In this embodiment, the extrusion mechanism 19 includes a rectangular groove 191 formed on the upper side of the base 1. Two cylinders 192 are installed on one side of the inner wall of the rectangular groove 191. A connecting plate 193 is fixedly connected to the output end of the two cylinders 192. A plurality of anti-slip pressure blocks 194 are fixedly connected to one side of the connecting plate 193. A slot 195 is formed on one side of the inner wall of the guide sleeve 12. The anti-slip pressure block 194 is slidably engaged with one side of the inner wall of the rectangular groove 191, and one end of the anti-slip pressure block 194 is slidably engaged with the inner wall of the slot 195. The pin is placed into the guide sleeve 12, and the cylinder 192 of the extrusion mechanism 19 is activated. The cylinder 192 pushes the connecting plate 193 to move in the rectangular groove 191. The connecting plate 193 drives multiple anti-slip pressure blocks 194 to slide synchronously. One end of the anti-slip pressure block 194 is embedded in the slot 195 on the inner wall of the guide sleeve 12 and extrudes the pin. After processing, the cylinder 192 drives the anti-slip pressure block 194 to reset and remove the pin. The multiple anti-slip pressure blocks 194 move synchronously to form a stable radial extrusion on the pin in the guide sleeve 12, preventing the pin from shaking or rotating during processing. The anti-slip design further improves the positioning accuracy, and the chamfer size error is controlled within a very small range.

[0027] When using the device, the worm 5 is rotated by the knob 17. The worm 5 drives the worm wheel 4 and the support ring 6 to rotate. Under the constraint of the limit block 15 and the limit groove 16, the threaded sleeve 7 drives the extrusion boss 8 to rise and fall, adjusting the tightness of the limit ball 11. Then, the guide sleeve 12 of the appropriate specification is inserted into the connecting sleeve 9 through the anti-fooling block 13 and the anti-fooling groove 14. Under the action of the extrusion boss 8, the limit ball 11 is embedded in the limit ring groove 18, completing the fixation of the guide sleeve 12. Then, the pin is inserted, and the cylinder 192 is started to make the anti-slip pressure block 194 extrude the pin to achieve precise positioning. After the processing is completed, the cylinder 192 is reset, and the knob 17 is rotated in the opposite direction to release the limit ball 11. The pin can then be removed and the guide sleeve 12 can be replaced as needed. The whole process realizes the rapid replacement of the guide sleeve 12 and the stable positioning of the pin, meeting the high efficiency and high precision requirements of batch chamfering processing.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tooling for batch chamfering of pins, comprising a base (1), characterized in that: The base (1) has multiple mounting slots (2) inside. A rotating shaft (3) is rotatably fitted on the lower side of the inner wall of the mounting slot (2). A worm gear (4) is fixedly connected to the rotating shaft (3). A worm (5) that meshes with the multiple worm gears (4) is rotatably fitted on one side of the base (1). A support ring (6) is fixedly connected to the upper end of the worm gear (4). A threaded sleeve (7) is threadedly fitted on the outer side of the support ring (6). An extrusion boss (8) is fixedly connected to the inner wall of the threaded sleeve (7). A connecting sleeve (9) is fixedly connected to the inner wall of the mounting slot (2). Multiple mating slots (10) are provided on the outer circumference of the connecting sleeve (9). A limit ball (11) is provided inside the mating slot (10). Multiple guide sleeves (12) are installed on the upper side of the base (1). An extrusion mechanism (19) is provided inside the base (1).

2. The tooling for batch chamfering of type pins according to claim 1, characterized in that, The lower end of the connecting sleeve (9) is located inside the threaded sleeve (7) and cooperates with the extrusion boss (8), and the lower end of the guide sleeve (12) extends into the interior of the connecting sleeve (9).

3. The tooling for batch chamfering of pins according to claim 1, characterized in that: Both sides of the guide sleeve (12) are fixedly connected with anti-fool blocks (13), and both sides of the inner wall of the connecting sleeve (9) are provided with anti-fool grooves (14) that cooperate with the anti-fool blocks (13).

4. The tooling for batch chamfering of pins according to claim 1, characterized in that: Both sides of the threaded sleeve (7) are fixedly connected to limit blocks (15), and both sides of the inner wall of the mounting groove (2) are provided with limit grooves (16) that cooperate with the limit blocks (15).

5. The tooling for batch chamfering of pins according to claim 1, characterized in that: A knob (17) is fixedly connected to one end of the worm gear (5).

6. The tooling for batch chamfering of pins according to claim 1, characterized in that: The guide sleeve (12) has a limiting ring groove (18) on its outer side, and a plurality of limiting balls (11) respectively cooperate with the limiting ring groove (18) and the extrusion boss (8).

7. The tooling for batch chamfering of pins according to claim 1, characterized in that: The extrusion mechanism (19) includes a rectangular groove (191) on the upper side of the base (1). Two cylinders (192) are installed on one side of the inner wall of the rectangular groove (191). A connecting plate (193) is fixedly connected to the output end of the two cylinders (192). Multiple anti-slip blocks (194) are fixedly connected to one side of the connecting plate (193). A slot (195) is opened on one side of the inner wall of the guide sleeve (12).

8. The tooling for batch chamfering of letter pins according to claim 7, characterized in that: The anti-slip block (194) is slidably fitted on one side of the inner wall of the rectangular groove (191), and one end of the anti-slip block (194) is slidably fitted with the inner wall of the slot (195).

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