CN213257160U - Piston pin hole chamfering tool - Google Patents
Piston pin hole chamfering tool Download PDFInfo
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- CN213257160U CN213257160U CN202021921175.3U CN202021921175U CN213257160U CN 213257160 U CN213257160 U CN 213257160U CN 202021921175 U CN202021921175 U CN 202021921175U CN 213257160 U CN213257160 U CN 213257160U
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- chamfer
- chamfering
- piston pin
- sword
- tool
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Abstract
The utility model relates to the field of machining, especially, relate to a piston pin hole chamfer cutter, including the cutter arbor, the cutter arbor includes the joint portion and the terminal connecting rod of front end, the diameter of joint portion is less than the diameter of connecting rod, and the middle part of joint portion is provided with a tool bit groove, tool bit inslot portion rotates to be connected and is provided with one and is flaky chamfer sword, the front end of chamfer sword up end is provided with a chamfer tool bit, chamfer sword end is provided with a direction sword tail. The utility model overcomes the defect of the chamfering process of the unable adaptation piston pin hole of chamfering tool among the prior art, through the utility model provides a chamfering tool can carry out the chamfer at small-size piston pin hole edge, has simplified the chamfering process.
Description
Technical Field
The utility model relates to the field of machining, especially, relate to a piston pin hole chamfer cutter.
Background
The piston pin on the piston compressor is a connecting piece for connecting the piston and the connecting rod, the piston pin is integrally assembled on the inner side of the piston, and the connecting rod pushes the piston to do reciprocating motion during working. The pin hole in the piston pin needs to be chamfered in the machining process, and due to the fact that the structure of the pin hole is small, the existing chamfering tool is difficult to chamfer.
For example, an efficient combined chamfering tool with application number CN201420239421.5 includes an outer chamfering tool and an inner chamfering tool disposed in parallel with the outer chamfering tool, an adjusting component capable of changing the distance between the outer chamfering tool and the inner chamfering tool is disposed between the outer chamfering tool and the inner chamfering tool, and the outer chamfering tool, the adjusting component and the inner chamfering tool are detachably connected. The utility model can adapt to the guide sleeve with different wall thickness by adjusting the adjusting part, and the relative positions of the outer chamfer cutter and the inner chamfer cutter are changed by moving the outer chamfer cutter or the inner chamfer cutter, so that the chamfering with different angles can be carried out, thereby realizing the chamfering with different angles on the inner and outer circular end surfaces of the guide sleeve; the angle of the chamfering tool is not required to be adjusted by turning the small tool rest on the motor car lathe, the machining complexity of the guide sleeve is reduced, the time is saved, the production period is shortened, the machining precision is improved, and the small-size piston pin is difficult to adapt and machine.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the chamfer process of the unable adaptation piston pin hole of chamfer cutter among the prior art, provide a piston pin hole chamfer cutter.
In order to realize the purpose of the utility model, the utility model discloses a following technical scheme realizes:
the utility model provides a piston pin hole chamfer cutter, includes the cutter arbor, the cutter arbor includes the joint portion and the terminal connecting rod of front end, the diameter of joint portion is less than the diameter of connecting rod, and the middle part of joint portion is provided with a tool bit groove, tool bit inslot portion rotates to be connected and is provided with one and is flaky chamfer sword, the front end of chamfer sword up end is provided with a chamfer tool bit, chamfer sword end is provided with a direction sword tail.
Preferably, the chamfering tool bit comprises a first guide surface at the front end and a chamfering surface at the rear end, the guide tool tail comprises a second guide surface at the front end and a third guide surface at the rear end, and the middle part of the chamfering tool is further provided with a rotating shaft hole.
Preferably, the joint of the first guide surface and the chamfer surface is in arc transition, the second guide surface and the third guide surface are in arc transition, and the third guide surface is in arc shape.
Preferably, a section of flat surface exists between the chamfering tool bit and the guide tool tail, and the third guide surface of the guide tool tail is connected with the lower end surface of the chamfering tool through a bevel edge.
Preferably, the height of the guide cutter tail is greater than that of the chamfering cutter head.
Therefore, the utility model discloses following beneficial effect has: the utility model provides an it includes cutter arbor and connecting rod, and wherein the cutter arbor can pass the pinhole of piston pin to realize the chamfer of chamfer sword to the pinhole, and the connecting rod can be connected this chamfer cutter with the lathe and carry out the transmission. The utility model discloses when the cutter arbor inserted the pinhole of piston pin, the chamfer tool bit of chamfer sword was first to contact with the pinhole, because the chamfer sword rotates to be connected on the cutter arbor, this section of chamfer tool bit rotates to tool bit inslot portion this moment, and the direction sword tail then rotates to tool bit groove outside, go forward in the pinhole along with the cutter arbor continues, then the pinhole is touch to the direction sword tail, make the direction sword tail rotate to tool bit inslot portion, and the chamfer tool bit then rotates to tool bit groove outside, when the cutter arbor inserts to the end along the pinhole, the chamfer tool bit can support the edge at the pinhole just, rotate the connecting rod this moment and can carry out the chamfer to the pinhole with the chamfer sword.
Simultaneously the utility model discloses through a hypotenuse interconnect between the terminal surface under third spigot surface and chamfer sword, set up like this and can make the lower extreme protrusion in the tool bit groove terminal surface under the lower extreme protrusion that can not appear the guide sword tail when rotating to tool bit inslot portion at the guide sword tail for the chamfer sword is in the inside condition of sticking out of pinhole.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a schematic structural view of the chamfer cutter of the present invention.
Wherein: the chamfering tool comprises a tool bar 1, a clamping part 2, a connecting rod 3, a tool bit groove 4, a chamfering tool 5, a chamfering tool bit 6, a guide tool tail 7, a first guide surface 8, a chamfering surface 9, a second guide surface 10, a third guide surface 11, a bevel edge 12, a rotating shaft hole 13 and a flat surface 14.
Detailed Description
The invention is further described with reference to the drawings and the specific embodiments. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Moreover, the embodiments of the invention described in the following description are generally only some embodiments, but not all embodiments, of the invention. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.
Examples
As shown in figures 1-3, a piston pin hole chamfering tool comprises a tool bar 1, wherein the tool bar 1 comprises a clamping portion 2 at the front end and a connecting rod 3 at the tail end, and the diameter of the clamping portion 2 is smaller than that of the connecting rod 3.
The middle part of joint portion 2 is provided with a tool bit groove 4, and tool bit groove 4 internal rotation is connected and is provided with one and be flaky chamfer sword 5, and the front end of chamfer sword 5 up end is provided with a chamfer tool bit 6, and 5 ends of chamfer sword are provided with a direction sword tail 7, and the height of direction sword tail 7 is greater than the height of chamfer tool bit 6.
The chamfering tool bit 6 comprises a first guide surface 8 at the front end and a chamfering surface 9 at the rear end, the joint of the first guide surface 8 and the chamfering surface 9 is in arc transition, the guide tool tail 7 comprises a second guide surface 10 at the front end and a third guide surface 11 of which the rear end is in an arc shape, and the second guide surface 10 and the third guide surface 11 are in arc transition. A section of flat surface 14 exists between the chamfering tool bit 6 and the guide tool tail 7, the third guide surface 11 of the guide tool tail 7 is connected with the lower end surface of the chamfering tool 5 through a bevel edge 12, and the middle part of the chamfering tool 5 is also provided with a rotating shaft hole 13 which is used for being rotatably connected with the clamping part 2.
The utility model provides a chamfer cutter's application method as follows: 1 when inserting the pinhole of piston pin, chamfer tool bit 6 of chamfer sword 5 contacts with the pinhole earlier, because chamfer sword 5 rotates and connects on cutter arbor 1, this section of this moment chamfer tool bit 6 rotates to tool bit groove 4 inside, and direction sword tail 7 then rotates to tool bit groove 4 outside, go forward in the pinhole along with cutter arbor 1 continues, then the pinhole is touched to direction sword tail 7, make direction sword tail 7 rotate to tool bit groove 4 inside, and chamfer tool bit 6 then rotates to tool bit groove 4 outside, when cutter arbor 1 inserts to the end along the pinhole, chamfer tool bit 6 can support the edge at the pinhole just, it can be enough that chamfer sword 5 carries out the chamfer to the pinhole to rotate connecting rod 3 this moment.
Simultaneously the utility model discloses through an hypotenuse 12 interconnect between the terminal surface under third spigot surface 11 and chamfer sword 5, set up like this and can make the lower extreme protrusion in tool bit groove 4 terminal surface under the lower extreme protrusion that can not appear guide sword tail 7 when rotating to tool bit groove 4 inside at guide sword tail 7 for chamfer sword 5 is in the inside condition of sticking out of pinhole.
Claims (5)
1. The utility model provides a piston pin hole chamfer cutter, its characterized in that, includes cutter arbor (1), cutter arbor (1) includes joint portion (2) and terminal connecting rod (3) of front end, the diameter of joint portion (2) is less than the diameter of connecting rod (3), and the middle part of joint portion (2) is provided with one tool bit groove (4), tool bit groove (4) inside rotation is connected and is provided with one and is flaky chamfer sword (5), the front end of chamfer sword (5) up end is provided with one chamfer tool bit (6), chamfer sword (5) end is provided with one direction sword tail (7).
2. The piston pin hole chamfering tool according to claim 1, wherein the chamfering bit (6) includes a first guide surface (8) at a front end and a chamfering surface (9) at a rear end, the guide bit shank (7) includes a second guide surface (10) at a front end and a third guide surface (11) at a rear end, and a rotation shaft hole (13) is further provided in a middle portion of the chamfering bit (5).
3. The piston pin hole chamfering tool according to claim 2, wherein the first guide surface (8) and the chamfer surface (9) are connected in a circular arc transition, the second guide surface (10) and the third guide surface (11) are in a circular arc transition, and the third guide surface (11) is in a circular arc shape.
4. A piston pin bore chamfering tool according to claim 1, 2 or 3, characterized in that a flat surface (14) exists between the chamfering bit (6) and the guiding nose (7), and the third guiding surface (11) of the guiding nose (7) and the lower end surface of the chamfering bit (5) are interconnected by a bevel edge (12).
5. Piston pin hole chamfering tool according to claim 4, characterized in that the height of the guiding tang (7) is greater than the height of the chamfering bit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921175.3U CN213257160U (en) | 2020-09-04 | 2020-09-04 | Piston pin hole chamfering tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921175.3U CN213257160U (en) | 2020-09-04 | 2020-09-04 | Piston pin hole chamfering tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213257160U true CN213257160U (en) | 2021-05-25 |
Family
ID=75938297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021921175.3U Active CN213257160U (en) | 2020-09-04 | 2020-09-04 | Piston pin hole chamfering tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213257160U (en) |
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2020
- 2020-09-04 CN CN202021921175.3U patent/CN213257160U/en active Active
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