CN212598972U

CN212598972U - Expansion core seat

Info

Publication number: CN212598972U
Application number: CN202020915624.7U
Authority: CN
Inventors: 刘建平; 吕允刚; 黄元林; 丁配东; 刘利斌; 王晓洪
Original assignee: Zhejiang Wanfeng Motorcycle Wheels Co ltd
Current assignee: Zhejiang Wanfeng Motorcycle Wheels Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-02-26
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses an inflation core print seat, its characterized in that: including base, core print body, ejector pin, connecting rod, latin, the cover that rises, the mounting groove has been seted up on base upper portion, is equipped with the core print body in the mounting groove, and the base intermediate position is equipped with the centre bore, is equipped with the ejector pin in the centre bore, and the cover is equipped with the cover that rises on the core print body, and core print body intermediate position is equipped with the lift hole, is equipped with the connecting rod in the lift hole, and connecting rod inside is equipped with first screw hole and second screw hole. The utility model discloses can realize the quick location to the wheel hub centre bore, and fix a position accurately, guarantee subsequent processingquality.

Description

Expansion core seat

Technical Field

The utility model relates to a wheel hub production technical field, concretely relates to inflation core print seat.

Background

At present, the aluminum alloy hub is processed by a milling machine by positioning a mandrel and installing a central hole of the hub on the mandrel for positioning and processing. The existing core shaft is large and large in size and fixed, and is only suitable for processing hubs with the same size of a central hole, and the hub is provided with a plurality of different sizes of the central hole, so that the core shafts with a plurality of specifications need to be manufactured on site, the production cost is increased on one hand, the field management difficulty is increased on the other hand, when the wheel type is replaced, the sizes of the central holes are different, the core shaft needs to be replaced, a lot of time is delayed for finding the core shaft and disassembling and assembling the core shaft, and.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an expansion core seat.

In order to achieve the above object, the present invention provides the following technical solutions:

an expansion core print comprises a base, a core print body, a mandril, a connecting rod, a latin and an expansion sleeve, wherein the upper part of the base is provided with a mounting groove, the core print body is arranged in the mounting groove, the middle position of the base is provided with a central hole, the mandril is arranged in the central hole, the core print body is sleeved with the expansion sleeve, the middle position of the core print body is provided with a lifting hole, the connecting rod is arranged in the lifting hole, a first threaded hole and a second threaded hole are arranged in the connecting rod, the upper end of the mandril is in threaded connection with the first threaded hole, the upper end of the latin is connected with a conical head, the latin penetrates through the expansion; a spring is arranged in the central hole, and the upper end and the lower end of the spring are respectively connected with the core holder body and the ejector rod.

Preferably, the outer edge of the base is provided with a plurality of first fixing holes and positioning holes.

Preferably, a second fixing hole is formed in the mounting groove, and a third fixing hole matched with the second fixing hole is formed in the core print body.

Preferably, a fixing groove is formed in the inner side of the lifting hole, a pin is installed in the fixing groove, and a guide notch matched with the pin is formed in the outer edge of the connecting rod. The pin is positioned in the guiding notch, so that the connecting rod can ascend and descend along the pin, and the connecting rod can be ensured to ascend and descend in the vertical direction without deviation.

Preferably, the expansion sleeve is provided with a plurality of through holes, the side wall of the expansion sleeve is provided with expansion joints communicated with the through holes, one end of each expansion joint extends to the end face of the expansion sleeve, and the upper part and the lower part of the expansion sleeve are provided with conical holes matched with the conical head and the conical frustum respectively.

Preferably, the bottom of the ejector rod is provided with a connecting screw hole.

Compared with the prior art, the beneficial effects of the utility model are that: the piston rod is utilized to drive the ejector rod to move up and down, so that the latin is driven to lift, the expansion and recovery of the expansion sleeve are controlled, the expansion degree of the expansion sleeve can be controlled through the downward moving position of the latin, no gap is formed between the expansion sleeve and the central hole of the hub, accurate positioning is realized, and the hub is fixed more stably.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the base of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of the center core holder body according to the present invention;

FIG. 5 is a schematic structural view of a connecting rod of the present invention;

fig. 6 is a top view of the connecting rod of the present invention;

FIG. 7 is a schematic structural view of a Latin of the present invention;

fig. 8 is a schematic structural view of the middle-expansion sleeve of the present invention.

Reference numerals: 1. a base; 2. a core print body; 3. a top rod; 4. a spring; 5. a connecting rod; 6. a pin; 7. performing latin; 8. expanding sleeves; 11. a first fixing hole; 12. positioning holes; 13. a central bore; 14. mounting grooves; 15. a second fixing hole; 21. a third fixing hole; 22. a lifting hole; 23. a truncated cone; 24. fixing grooves; 51. a first threaded hole; 52. a second threaded hole; 53. a guide notch; 71. a conical head; 81. a through hole; 82. an expansion joint; 83. and (4) a tapered hole.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to fig. 1-8.

An expansion core print comprises a base 1, a core print body 2, a mandril 3, a connecting rod 5, a latin 7 and an expansion sleeve 8, wherein the upper part of the base 1 is provided with a mounting groove 14, the core print body 2 is arranged in the mounting groove 14, the middle position of the base 1 is provided with a central hole 13, the mandril 3 is arranged in the central hole 13, the expansion sleeve 8 is sleeved on the core print body 2, the middle position of the core print body 2 is provided with a lifting hole 22, the connecting rod 5 is arranged in the lifting hole 22, a first threaded hole 51 and a second threaded hole 52 are arranged in the connecting rod 5, the upper end of the mandril 3 is in threaded connection with the first threaded hole 51, the upper end of the latin 7 is connected with a conical head 71, the latin 7 passes through the expansion sleeve 8 and is inserted into; a spring 4 is arranged in the central hole 13, and the upper end and the lower end of the spring 4 are respectively connected with the core holder body 2 and the ejector rod 3.

Preferably, the outer edge of the base 1 is provided with a plurality of first fixing holes 11 and positioning holes 12.

Preferably, a second fixing hole 15 is formed in the mounting groove 14, a third fixing hole 21 matched with the second fixing hole 15 is formed in the core print body 2, and the stud is screwed into the second fixing hole 15 and the third fixing hole 21, so that the core print body 2 is fixed on the base 1.

Preferably, a fixing groove 24 is formed inside the lifting hole 22, a pin 6 is installed in the fixing groove 24, and a guide notch 53 matched with the pin 6 is formed on the outer edge of the connecting rod 5. The pin 6 is located in the guide notch 53 to allow the link 5 to ascend and descend along the pin 6, thereby ensuring that the link 5 ascends and descends in the vertical direction without being deviated.

Preferably, the expansion sleeve 8 is provided with a plurality of through holes 81, the side wall of the expansion sleeve 8 is provided with expansion joints 82 communicated with the through holes 81, one end of each expansion joint 82 extends to the end face of the expansion sleeve 8, the upper part and the lower part of the expansion sleeve 8 are provided with tapered holes 83 respectively matched with the tapered head 71 and the truncated cone 23, and the expansion joints 82 enable the expansion sleeve 8 to have certain radial elasticity.

Preferably, the bottom of the top rod 3 is provided with a connecting screw hole for connecting an external driving mechanism.

During specific implementation, a hub to be processed is sleeved on the expansion sleeve 8, the ejector rod 3 is connected with a piston rod of the air cylinder through a connecting screw hole, the ejector rod 3 is pulled to descend through the piston rod, the ejector rod 3 drives the latin 7 to move downwards through the connecting rod 5, the conical head 71 and the cone frustum 23 are clamped in the conical hole 83 of the expansion sleeve 8, and therefore the conical hole 83 is opened, the gap between the center hole of the hub and the expansion sleeve 8 is zero, and accurate positioning is achieved. After the processing is finished, the piston rod pushes the ejector rod 3 to ascend, the latin 7 is pushed out from the expansion sleeve 8, and the expansion sleeve 8 restores the original state under the self elastic action. The setting of spring 4 for ejector pin 3 is more stable to the drawing speed of latin 7, and can make latin 7 reset more fast.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An expansion core print, characterized by: comprises a base (1), a core holder body (2), a mandril (3), a connecting rod (5), a latin (7) and an expansion sleeve (8), wherein the upper part of the base (1) is provided with a mounting groove (14), the core holder body (2) is arranged in the mounting groove (14), the middle position of the base (1) is provided with a central hole (13), the mandril (3) is arranged in the central hole (13), the core holder body (2) is sleeved with the expansion sleeve (8), the middle position of the core holder body (2) is provided with a lifting hole (22), the connecting rod (5) is arranged in the lifting hole (22), a first threaded hole (51) and a second threaded hole (52) are arranged in the connecting rod (5), the upper end of the mandril (3) is in the first threaded hole (51) in a threaded manner, the upper end of the latin (7) is connected with a conical head (71), and the latin (7) passes through the expansion sleeve (8, the lower end of the Latin (7) is in threaded connection with the second threaded hole (52); a spring (4) is arranged in the central hole (13), and the upper end and the lower end of the spring (4) are respectively connected with the core print body (2) and the ejector rod (3).

2. An expansion cartridge according to claim 1, wherein: the outer edge of the base (1) is provided with a plurality of first fixing holes (11) and positioning holes (12).

3. An expansion cartridge according to claim 1, wherein: a second fixing hole (15) is formed in the mounting groove (14), and a third fixing hole (21) matched with the second fixing hole (15) is formed in the core print body (2).

4. An expansion cartridge according to claim 1, wherein: the inner side of the lifting hole (22) is provided with a fixing groove (24), a pin (6) is installed in the fixing groove (24), and the outer edge of the connecting rod (5) is provided with a guide notch (53) matched with the pin (6).

5. An expansion cartridge according to claim 1, wherein: a plurality of through holes (81) are formed in the expansion sleeve (8), an expansion joint (82) communicated with the through holes (81) is formed in the side wall of the expansion sleeve (8), one end of the expansion joint (82) extends to the end face of the expansion sleeve (8), and tapered holes (83) matched with the conical heads (71) and the truncated cone (23) are formed in the upper portion and the lower portion of the expansion sleeve (8).

6. An expansion cartridge according to claim 1, wherein: and the bottom of the ejector rod (3) is provided with a connecting screw hole.