Auxiliary positioning device for drilling a plunger end face

Abstract

The application relates to an auxiliary positioning device for drilling a plunger end face, and belongs to the technical field of plunger processing, which comprises a positioning sleeve, a pull rod, a center frame and a tail frame, a hole position groove is arranged on the surface of the positioning sleeve, the positioning sleeve comprises an annular plate and arc-shaped blocks uniformly arranged on the circumferential side of the annular plate, the circular inner diameter formed by the plurality of arc-shaped blocks is matched with the outer diameter of the plunger, the hole position groove is arranged on the annular plate, and a placing groove for limiting the center frame is arranged on the surface of the side of the annular plate away from the arc-shaped blocks. The positioning sleeve is arranged, the hole position groove is preliminarily determined on the surface of the positioning sleeve, the positioning sleeve is fixed on the plunger through the pull rod and the tail frame, and when drilling, the hole position groove is only needed to be drilled, the whole positioning device is not only easy to install, but also can improve the drilling precision, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of plunger machining, and in particular to an auxiliary positioning device for drilling the end face of a plunger. Background Technology

[0002] Currently, such as Figure 1 The large plunger 7 shown has a connecting hole 71 machined on one end surface. During production, the position to be drilled is usually marked manually on the plunger surface before drilling.

[0003] Manual marking requires calculations across multiple dimensions, which is a cumbersome process and prone to errors. Therefore, there is an urgent need to develop a positioning device that can assist in drilling in order to improve production efficiency. Utility Model Content

[0004] The purpose of this application is to provide an auxiliary positioning device for drilling a plunger end face, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides an auxiliary positioning device for drilling a plunger end face, which adopts the following technical solution: An auxiliary positioning device for drilling a plunger end face includes a positioning sleeve, a pull rod, a central frame, and a tail frame. The positioning sleeve has a hole groove on its surface. The positioning sleeve includes an annular plate and arc-shaped blocks evenly arranged around the annular plate. The inner diameter of the circle formed by the multiple arc-shaped blocks is adapted to the outer diameter of the plunger. The hole groove is formed on the annular plate. A placement groove for limiting the central frame is formed on the side of the annular plate away from the arc-shaped blocks. The pull rod passes through the middle of the central frame. The tail frame is fitted onto the plunger. The pull rod passes through the middle of the tail frame, and a locking nut is threaded onto the surface of the pull rod. A stop block is fixed to the end of the pull rod near the central frame.

[0006] The tailstock includes a circular plate and arc-shaped locking blocks evenly arranged around the periphery of the circular plate. The inner diameter of the circle formed by the multiple arc-shaped locking blocks is adapted to the outer diameter of the plunger. Multiple hollow grooves are evenly opened on the surface of the circular plate, and a through hole is opened in the middle of the circular plate.

[0007] Preferably, a rubber anti-slip pad is fixed to the surface of the circular plate near the plunger.

[0008] By adopting the above technical solution, after the positioning sleeve and the tailstock are fixed together, the rubber anti-slip pad can prevent the tailstock from being misaligned and ensure the accuracy of the hole groove on the positioning sleeve.

[0009] Preferably, to facilitate manual rotation of the locking nut by the operator, a lever is fixed obliquely on the locking nut, and a ball is fixed at the end of the lever.

[0010] Preferably, in order to facilitate the positioning sleeve and tailstock being fitted onto the plunger, the end faces of the arc-shaped block and the arc-shaped locking block are both chamfered.

[0011] Preferably, in order to improve the strength of the tailstock, the circular plate is fixed with a reinforcing rib.

[0012] In summary, this application includes at least one of the following beneficial technical effects: the auxiliary positioning device for drilling the end face of the plunger is equipped with a positioning sleeve with a pre-determined hole groove on its surface. The positioning sleeve is fixed on the plunger by a pull rod and a tailstock. When drilling, it is only necessary to drill into the hole groove. The entire positioning device is not only easy to install, but also improves drilling accuracy and greatly improves production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure used to represent a plunger in existing technology.

[0014] Figure 2 This is a schematic diagram of the usage state structure of an embodiment of this application.

[0015] Figure 3 This is an exploded view of an embodiment of this application.

[0016] Explanation of reference numerals in the attached drawings: 1. Positioning sleeve; 11. Annular plate; 111. Hole groove; 112. Placement groove; 12. Arc-shaped block; 2. Pull rod; 21. Stop block; 3. Center frame; 4. Tail frame; 41. Circular plate; 411. Hollowed-out groove; 42. Arc-shaped locking block; 43. Reinforcing rib plate; 5. Locking nut; 51. Turning rod; 52. Ball. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 2-3 This application will be described in further detail.

[0018] This application discloses an auxiliary positioning device for drilling a plunger end face, referring to... Figure 2-3 The device includes a positioning sleeve 1, a pull rod 2, a central frame 3, and a tail frame 4. The positioning sleeve 1 has a hole groove 111 on its surface. The positioning sleeve 1 includes an annular plate 11 and arc-shaped blocks 12 evenly distributed around the annular plate 11. The inner diameter of the circle formed by the multiple arc-shaped blocks 12 is adapted to the outer diameter of the plunger. The hole groove 111 is opened on the annular plate 11. The side of the annular plate 11 away from the arc-shaped blocks 12 has a placement groove 112 for limiting the central frame 3. The pull rod 2 passes through the middle of the central frame 3. The tail frame 4 is fitted onto the plunger. The pull rod 2 passes through the middle of the tail frame 4. A locking nut 5 is threaded onto the surface of the pull rod 2. A lever 51 is fixed obliquely on the locking nut 5. A ball 52 is fixed at the end of the lever 51. A stop block 21 is fixed at the end of the pull rod 2 near the central frame 3.

[0019] Reference Figure 2-3 The tailstock 4 includes a circular plate 41 and arc-shaped locking blocks 42 evenly arranged around the circular plate 41. The inner diameter of the circle formed by the multiple arc-shaped locking blocks 42 is adapted to the outer diameter of the plunger. Multiple hollow grooves 411 are evenly opened on the surface of the circular plate 41. A through hole is opened in the middle of the circular plate 41. A rubber anti-slip pad (not shown in the figure) is fixed on the side of the circular plate 41 near the plunger. By setting the anti-slip pad, when the positioning sleeve 1 and the tailstock 4 are pulled and fixed, the rubber anti-slip pad can prevent the tailstock 4 from being misaligned. Therefore, it can ensure that the hole groove 111 on the positioning sleeve 1 is accurate. In order to ensure that the circular plate 41 has sufficient tensile strength, a reinforcing rib plate 43 is fixed on the surface of the circular plate 41.

[0020] Reference Figure 2 In order to facilitate the smooth mounting of the positioning sleeve 1 and the tailstock 4 onto the plunger, the end faces of the arc-shaped block 12 and the arc-shaped locking block 42 are both chamfered.

[0021] The implementation principle of the auxiliary positioning device for drilling a plunger end face according to an embodiment of this application is as follows: In use, the positioning sleeve 1 and tailstock 4 are respectively placed on the plunger, and the center frame 3 is placed in the placement slot 112. Then, the pull rod 2 is passed through the center frame 3 and tailstock 4, and the positioning sleeve 1 and tailstock 4 are pulled and fixed by the locking nut 5. At this time, the workers only need to drill holes in the hole slot 111 on the positioning sleeve 1. Not only is there no need for manual marking, but it also has the advantages of simple installation and more accurate positioning, which greatly improves the production and processing efficiency.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An auxiliary positioning device for drilling a plunger end face, characterized in that: The device includes a positioning sleeve (1), a pull rod (2), a center frame (3), and a tail frame (4). The positioning sleeve (1) has a hole groove (111) on its surface. The positioning sleeve (1) includes an annular plate (11) and arc-shaped blocks (12) evenly arranged around the annular plate (11). The inner diameter of the circle formed by the multiple arc-shaped blocks (12) is adapted to the outer diameter of the plunger. The hole groove (111) is opened on the annular plate (11). The side surface of the annular plate (11) away from the arc-shaped blocks (12) is provided with a placement groove (112) for limiting the center frame (3). The pull rod (2) passes through the middle of the center frame (3). The tail frame (4) is fitted onto the plunger. The pull rod (2) passes through the middle of the tail frame (4), and a locking nut (5) is threaded onto the surface of the pull rod (2). A stop block (21) is fixed at one end of the pull rod (2) near the center frame (3).

2. The auxiliary positioning device for drilling the plunger end face according to claim 1, characterized in that: The tailstock (4) includes a circular plate (41) and arc-shaped blocks (42) evenly arranged around the circular plate (41). The inner diameter of the circular block (42) is adapted to the outer diameter of the plunger. The surface of the circular plate (41) is evenly provided with multiple hollow grooves (411), and the center of the circular plate (41) is provided with a through hole.

3. The auxiliary positioning device for drilling the plunger end face according to claim 2, characterized in that: A rubber anti-slip pad is fixed to the surface of the circular plate (41) near the plunger.

4. The auxiliary positioning device for drilling the plunger end face according to claim 1, characterized in that: A lever (51) is obliquely fixed on the locking nut (5), and a ball (52) is fixed at the end of the lever (51).

5. The auxiliary positioning device for drilling the plunger end face according to claim 2, characterized in that: Both the arc-shaped block (12) and the arc-shaped card block (42) have chamfered ends.

6. The auxiliary positioning device for drilling the plunger end face according to claim 2, characterized in that: The circular plate (41) is fixed with a reinforcing rib plate (43).

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