CN212899287U - Graphite pin for assembly - Google Patents
Graphite pin for assembly Download PDFInfo
- Publication number
- CN212899287U CN212899287U CN202022139729.0U CN202022139729U CN212899287U CN 212899287 U CN212899287 U CN 212899287U CN 202022139729 U CN202022139729 U CN 202022139729U CN 212899287 U CN212899287 U CN 212899287U
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- Prior art keywords
- graphite
- hole
- pin
- counter bore
- head part
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Abstract
The utility model discloses a graphite pin for assembly, which comprises a head part and a rod part arranged on the end surface of the head part, wherein a counter bore is arranged in the head part; the rod part comprises an outer graphite layer and an inner metal layer, and a through hole is formed in the inner metal layer; the rod part is symmetrically provided with chip grinding grooves. The aperture of the counter bore is 1.5-2 times of that of the through hole. The utility model adopts the composite material, and the graphite material is laid on the steel core body, so that the graphite material is saved, and the production difficulty is reduced; through setting up counter bore, through-hole and chip groove, establish the passageway for the clearance graphite abrasive dust in the use, reduced the influence of graphite abrasive dust.
Description
Technical Field
The utility model belongs to the technical field of graphite and carbon material, concretely relates to graphite pin is used in assembly.
Background
Graphite products, such as graphite molds, need to be fixed or connected by pins made of the same material (cementing can be adopted, but application scenes need to be distinguished) during assembly due to the material characteristics of the graphite molds, and have the functions of positioning and locking. Because the graphite pin is a quick-wear part, the surface of the graphite pin is collided or scratched to influence the connection effect, the problems of abrasion or abrasive dust and the like can be caused, and the performance of the graphite die can be seriously influenced.
Traditional pin obviously can't satisfy above-mentioned special needs, and present graphite material pin also does not make corresponding structural design to above-mentioned problem, and then has promoted manufacturing cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a graphite pin is used in assembly to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the tool comprises a head part and a rod part arranged on the end face of the head part, wherein a counter bore is arranged in the head part; the rod part comprises an outer graphite layer and an inner metal layer, and a through hole is formed in the inner metal layer; the rod part is symmetrically provided with chip grinding grooves.
Preferably, the aperture of the counter bore is 1.5-2 times of that of the through hole.
Preferably, the chip grinding grooves are through grooves, and the number of the chip grinding grooves is not less than 4; the outer edges of the chip grinding grooves are provided with R0.5 chamfers; the chip grinding groove is communicated with the through hole.
Preferably, the thickness of the outer layer of the graphite outer layer is 2-3 mm.
Preferably, the excircle of the graphite outer layer is conical, and the conical included angle is 0.12 degrees.
Compared with the prior art, the beneficial effects of the utility model are that: the composite material is adopted, and the graphite material is laid on the steel core body, so that the graphite material is saved, and the production difficulty is reduced; through setting up counter bore, through-hole and chip groove, establish the passageway for the clearance graphite abrasive dust in the use, reduced the influence of graphite abrasive dust.
Drawings
Fig. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
fig. 3 is a cross-sectional view of the present invention.
In the figure: 1. an outer layer of graphite; 2. grinding a chip groove; 3. a head portion; 4. a metal inner layer; 5. a through hole; 6. a counterbore.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Referring to fig. 1 to 3, the present invention provides a technical solution: a graphite pin for assembly comprises a head part 3 and a rod part arranged on the end face of the head part 3, wherein the head part 3 and the rod part are both made of metal materials; a counter bore 6 is arranged in the head part 3, the rod part comprises a graphite outer layer 1 and a metal inner layer 4, and a through hole 5 is arranged in the metal inner layer 4; the rod part is symmetrically provided with chip grinding grooves 2. The chip grinding groove 2, the through hole 5 and the counter bore 6 form a channel, and a dust suction port of a dust collector can enter the pin to suck away graphite powder particles or other dust.
The aperture of the counter bore 6 is 1.5-2 times, preferably 2 times of the aperture of the through hole 5. The through hole 5 and the counter bore 6 are coaxially arranged.
The chip grinding grooves 2 are through grooves, and the number of the chip grinding grooves is not less than 4; the outer edges of the chip grinding grooves 2 are provided with R0.5 chamfers; the chip groove 2 is communicated with the through hole 5.
The size of the chip groove 2 is 0.8x0.2mm, the size of the chip groove 2 is designed according to the diameter design of the graphite outer layer 1 and the matched tolerance range, and the design is based on that the total area of the chip groove 2 is less than 1 percent of the cylindrical area of the pin shaft.
The thickness of the outer layer 1 of the graphite layer is 2-3 mm.
The excircle of the graphite outer layer 1 is conical, and the conical included angle is 0.12 degrees.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A graphite pin for assembly, characterized in that: the tool comprises a head part and a rod part arranged on the end face of the head part, wherein a counter bore is arranged in the head part; the rod part comprises an outer graphite layer and an inner metal layer, and a through hole is formed in the inner metal layer; the rod part is symmetrically provided with chip grinding grooves.
2. The graphite pin for assembly according to claim 1, wherein: the aperture of the counter bore is 1.5-2 times of that of the through hole.
3. The graphite pin for assembly according to claim 1, wherein: the chip grinding grooves are through grooves, and the number of the chip grinding grooves is not less than 4; the outer edges of the chip grinding grooves are provided with R0.5 chamfers; the chip grinding groove is communicated with the through hole.
4. The graphite pin for assembly according to claim 1, wherein: the thickness of the outer layer of graphite is 2 ~ 3 mm.
5. The graphite pin for assembly according to claim 1, wherein: the outer excircle of graphite is the toper, and the tapering contained angle is 0.12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022139729.0U CN212899287U (en) | 2020-09-26 | 2020-09-26 | Graphite pin for assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022139729.0U CN212899287U (en) | 2020-09-26 | 2020-09-26 | Graphite pin for assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212899287U true CN212899287U (en) | 2021-04-06 |
Family
ID=75258940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022139729.0U Active CN212899287U (en) | 2020-09-26 | 2020-09-26 | Graphite pin for assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212899287U (en) |
-
2020
- 2020-09-26 CN CN202022139729.0U patent/CN212899287U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant |