Rhombic positioning pin
By introducing a vibration oil drain assembly and a spring structure into the diamond-shaped locating pin, the problems of increased friction and jamming during diamond pin insertion were solved, achieving efficient positioning of the diamond-shaped pin and the mating hole.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-03-17
AI Technical Summary
Existing diamond-shaped pins are prone to increased friction and jamming when inserted into mating holes, resulting in low positioning efficiency.
A rhombus-shaped locating pin is designed, comprising a rhombus-shaped pin body, a bottom pin, a top contact head, a round hole, an open groove, and a vibration oil discharge assembly. The vibration oil discharge assembly lubricates the rhombus-shaped pin when it is inserted into the mating hole. The lubricating oil flows out by the cooperation of a spring and a rotating handle, reducing friction.
It improves the positioning efficiency of the diamond pin and the mating hole, reduces friction and jamming during the insertion process, and enhances the smoothness and efficiency of the insertion.
Smart Images
Figure CN224003015U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of positioning pin technology, specifically a rhomboid positioning pin. Background Technology
[0002] Locating pins, using the workpiece hole as a positioning reference, are parts that restrict the degrees of freedom of an object, controlling the linear motion of the object in the three axes of X, Y, and Z, and the six degrees of freedom of rotation around X, Y, and Z.
[0003] Existing technologies suffer from a lack of lubrication on the outer surface of the diamond pin when it is inserted into a mating hole. This leads to increased friction between the diamond pin and the inner wall of the mating hole, resulting in prolonged jamming and reduced positioning efficiency. To address this, we propose a diamond positioning pin. Utility Model Content
[0004] The purpose of this utility model is to provide a rhomboid positioning pin to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a rhombus-shaped positioning pin, comprising a rhombus-shaped pin body, a bottom pin, and a top contact head. The top contact head is fixedly connected to the upper end of the rhombus-shaped pin body, and the rhombus-shaped pin body and the top contact head form an integral unit. A circular hole is formed in the middle of the upper end of the top contact head, extending into the inner side of the rhombus-shaped pin body. The circular hole connects to two symmetrically arranged placement slots formed on the top contact head. Multiple symmetrically arranged opening slots are formed at the outer end of the rhombus-shaped pin body. The groove connects to the circular hole. A vibration oil discharge assembly is provided inside the diamond-shaped pin body. The vibration oil discharge assembly includes a conical column. The outer end of the conical column abuts against a plurality of symmetrically arranged cylinders. A pull-out column is fixedly connected to the outer end of the cylinder. A fixed circular plate is slidably connected to the outer end of the pull-out column. The outer end of the fixed circular plate is fixedly connected to the inner wall of the opening groove. The pull-out column passes through the fixed circular plate. A lifting column is fixedly connected to the middle of the upper end of the conical column. A lifting plate is fixedly connected to the upper end of the lifting column. A second spring is fixedly connected to the end of the cylinder near the fixed circular plate.
[0006] Preferably, a guide post is fixedly connected to the bottom of each placement slot, a movable plate is slidably connected to the outer end of the guide post, and a first spring is fixedly connected to the lower end of each movable plate, with the lower end of the first spring fixedly connected to the bottom of the placement slot.
[0007] Preferably, the second spring is sleeved on the pull-out column, and the end of the second spring away from the column is fixedly connected to the fixed circular plate.
[0008] Preferably, the surface of the fixed circular plate has a plurality of oil flow holes distributed in a circular pattern.
[0009] Preferably, the upper end of the guide post is threaded with a rotating handle, and the rotating handle is located on the upper part of the moving plate.
[0010] Preferably, the end of the diamond-shaped pin body away from the top contact head is fixedly connected to a bottom pin, and the bottom pin is shaped to be larger at the top and smaller at the bottom.
[0011] Preferably, the outer diameter of the cylinder is matched with the inner diameter of the opening groove, and the outer end of the movable plate is slidably connected to the placement groove.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. Equipped with a diamond-shaped pin body, a bottom pin, a top contact head, a round hole, an opening groove, a placement groove, and a vibration oil drain assembly, this device allows for the insertion of the diamond-shaped pin body into the mating hole. First, the bottom pin is inserted into the mating hole. During this process, the top contact head is tapped. The vibration is transmitted to the first spring, which in turn moves the moving plate upwards, causing the lifting plate to move upwards. The lifting plate then moves the lifting column and the conical column upwards, and the conical column moves the round column upwards. During the inward movement, the cylinder drives the pull-out column to move inward. At this time, the second spring exerts pressure on the cylinder. When the cylinder moves out of the inner side of the opening groove, the oil in the circular hole flows out of the opening groove through the oil flow hole. At this time, the lubricating oil lubricates the diamond pin body and the inner wall of the mating hole. This utility model realizes that when the diamond pin body is inserted into the mating hole, the top contact head can be hammered. During the hammering action, the vibrating oil discharge component can vibrate, thereby causing the oil to flow out from the opening groove and lubricate the diamond pin body and the inner wall of the mating hole, thus improving the positioning efficiency of the diamond pin body.
[0014] 2. Equipped with a diamond-shaped pin body, bottom pin, top contact head, round hole, opening slot, placement slot, guide post, moving plate, and rotating handle, the vibration oil draining assembly can be removed during use. By rotating the handle, the threaded connection between the handle and the guide post is severed. The moving plate can then be removed from the guide post, and the components inside the vibration oil draining assembly can be removed step by step, improving component utilization. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the rhomboid pin body of this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the vibration oil discharge assembly of this utility model;
[0018] Figure 4 This utility model Figure 3 Enlarged view of the structure of part A in the middle.
[0019] In the diagram: 1. Diamond-shaped pin body; 2. Bottom pin; 3. Top contact head; 4. Round hole; 5. Opening slot; 6. Placement slot; 7. Vibration oil drain assembly; 71. Guide post; 72. Moving plate; 73. Rotating handle; 74. First spring; 75. Lifting plate; 76. Lifting column; 77. Conical column; 78. Cylindrical column; 79. Pull-out column; 710. Fixed circular plate; 711. Oil outlet hole; 712. Second spring. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a rhombus-shaped positioning pin, including a rhombus-shaped pin body 1, a bottom pin 2, and a top contact head 3. The top contact head 3 is fixedly connected to the upper end of the rhombus-shaped pin body 1, and the rhombus-shaped pin body 1 and the top contact head 3 form an integral unit. A circular hole 4 is opened in the middle of the upper end of the top contact head 3, and the circular hole 4 extends to the inner side of the rhombus-shaped pin body 1. The circular hole 4 is connected to two symmetrically arranged placement grooves 6 opened on the top contact head 3. A plurality of symmetrically arranged opening grooves 5 are opened at the outer end of the rhombus-shaped pin body 1, and the opening grooves 5 are connected to the circular hole 4. A vibration oil draining component 7 is provided, which includes a conical column 77. The outer end of the conical column 77 abuts against a plurality of symmetrically arranged cylinders 78. A pull-out column 79 is fixedly connected to the outer end of the cylinder 78. A fixed circular plate 710 is slidably connected to the outer end of the pull-out column 79. The outer end of the fixed circular plate 710 is fixedly connected to the inner wall of the opening groove 5. The pull-out column 79 passes through the fixed circular plate 710. A lifting column 76 is fixedly connected to the middle of the upper end of the conical column 77. A lifting plate 75 is fixedly connected to the upper end of the lifting column 76. A second spring 712 is fixedly connected to the end of the cylinder 78 near the fixed circular plate 710.
[0022] In this embodiment, a guide post 71 is fixedly connected to the bottom of each placement slot 6, and a movable plate 72 is slidably connected to the outer end of the guide post 71. A first spring 74 is fixedly connected to the lower end of each movable plate 72, and the lower end of the first spring 74 is fixedly connected to the bottom of the placement slot 6.
[0023] Specifically, ensure that the first spring 74 can drive the movable plate 72 to slide relative to the guide post 71.
[0024] In this embodiment, the second spring 712 is sleeved on the pull-out post 79, and the end of the second spring 712 away from the cylinder 78 is fixedly connected to the fixed circular plate 710.
[0025] Specifically, ensure that the second spring 712 does not interfere with the pull-out post 79.
[0026] In this embodiment, the surface of the fixed circular plate 710 is provided with a plurality of circumferentially distributed oil flow holes 711.
[0027] Specifically, lubricating oil can be passed through the fixed circular plate 710 via the oil flow hole 711.
[0028] In this embodiment, the upper end of the guide post 71 is threaded with a rotating handle 73, which is located on the upper part of the moving plate 72.
[0029] Specifically, the movable plate 72 can be removed by rotating the handle 73.
[0030] In this embodiment, the bottom pin 2 is fixedly connected to the end of the diamond-shaped pin body 1 away from the top contact head 3. The bottom pin 2 is designed to be larger at the top and smaller at the bottom.
[0031] Specifically, ensure that the bottom pin 2 does not make initial hard contact when it is inserted into the mating hole.
[0032] In this embodiment, the outer diameter of the cylinder 78 is matched with the inner diameter of the opening slot 5, and the outer end of the movable plate 72 is slidably connected to the placement slot 6.
[0033] Specifically, ensure that there is no oil leakage when the cylinder 78 is inside the opening groove 5.
[0034] Working principle: When the diamond-shaped pin body 1 is inserted into the mating hole, the bottom pin 2 is inserted into the mating hole first. During the insertion of the bottom pin 2 into the mating hole, the top contact head 3 is hammered. During the hammering, the vibration is transmitted to the first spring 74. The first spring 74 drives the moving plate 72 to move upward, which in turn drives the lifting plate 75 to move upward. The lifting plate 75 drives the lifting column 76 and the conical column 77 to move upward. The conical column 77 drives the cylinder 78 to move inward. The cylinder 78 drives the pull-out column 79 to move inward. During the movement, the second spring 712 exerts pressure on the cylinder 78. When the cylinder 78 moves out of the inner side of the opening groove 5, the oil in the circular hole 4 flows out of the opening groove 5 through the oil flow hole 711. At this time, the lubricating oil lubricates the diamond pin body 1 and the inner wall of the mating hole. This utility model realizes that when the diamond pin body 1 is inserted into the mating hole, the top contact head 3 can be hammered. During the hammering action, the vibration oil discharge component 7 can vibrate, thereby allowing the oil to flow out from the opening groove 5 and lubricate the diamond pin body 1 and the inner wall of the mating hole, thus improving the positioning efficiency of the diamond pin body 1.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A diamond shaped positioning pin comprising a diamond shaped pin body (1), a bottom end plug (2) and a top end contact head (3), characterized in that: The upper end of the rhombus pin body (1) is fixedly connected with a top contact head (3), the rhombus pin body (1) and the top contact head (3) form an integral whole, a circular hole (4) is formed in the upper middle part of the top contact head (3), the circular hole (4) extends to the inner side of the rhombus pin body (1), the circular hole (4) is communicated with two symmetrically arranged placing grooves (6) formed in the top contact head (3), a plurality of symmetrically arranged opening grooves (5) are formed in the outer end of the rhombus pin body (1), the opening grooves (5) are communicated with the circular hole (4), a vibration oil draining assembly (7) is arranged in the rhombus pin body (1), the vibration oil draining assembly (7) comprises a conical column (77), a plurality of symmetrically arranged cylindrical columns (78) are abutted at the outer end of the conical column (77), a pull column (79) is fixedly connected at the outer end of the cylindrical column (78), a fixed circular plate (710) is slidably connected at the outer end of the pull column (79), the outer end of the fixed circular plate (710) is fixedly connected with the inner wall of the opening groove (5), the pull column (79) penetrates through the fixed circular plate (710), a lifting column (76) is fixedly connected at the upper middle part of the conical column (77), a lifting plate (75) is fixedly connected at the upper end of the lifting column (76), a second spring (712) is fixedly connected at one end of the cylindrical column (78) close to the fixed circular plate (710).
2. A diamond shaped positioning pin according to claim 1, characterized in that: The bottom end of each placing groove (6) is fixedly connected with a guide column (71), the outer end of the guide column (71) is slidably connected with a moving plate (72), the lower end of each moving plate (72) is fixedly connected with a first spring (74), and the lower end of the first spring (74) is fixedly connected with the bottom end of the placing groove (6).
3. A diamond shaped positioning pin according to claim 1, wherein: The second spring (712) is sleeved on the pull column (79), and the second spring (712) is fixedly connected with the fixed circular plate (710) away from the cylindrical column (78).
4. A diamond shaped positioning pin according to claim 1, wherein: A plurality of oil flow holes (711) are formed on the surface of the fixed circular plate (710) in a circumferential distribution.
5. A diamond shaped positioning pin as claimed in claim 2, wherein: A rotating handle (73) is threadedly connected at the upper end of the guide column (71), and the rotating handle (73) is arranged on the upper part of the moving plate (72).
6. A diamond shaped positioning pin as claimed in claim 1, wherein: The end of the rhombus pin body (1) away from the top contact head (3) is fixedly connected with a bottom bolt (2), and the bottom bolt (2) is arranged in a shape of large at the top and small at the bottom.
7. A diamond shaped positioning pin as claimed in claim 2, wherein: The outer diameter of the cylindrical column (78) is matched with the inner diameter of the opening groove (5), and the outer end of the moving plate (72) is slidably connected with the placing groove (6).