CN214350802U - Machining tool for connecting rod crankshaft mounting hole - Google Patents
Machining tool for connecting rod crankshaft mounting hole Download PDFInfo
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- CN214350802U CN214350802U CN202023215943.6U CN202023215943U CN214350802U CN 214350802 U CN214350802 U CN 214350802U CN 202023215943 U CN202023215943 U CN 202023215943U CN 214350802 U CN214350802 U CN 214350802U
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- cutter body
- cutter
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- boring
- adjusting block
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Abstract
The utility model discloses a processing cutter for connecting rod crankshaft mounting hole, include: the cutter body, an adjusting block, a locking screw, a chamfering blade and a boring cutter blade; the cutter body is cylindrical, the diameter of the cutter body is reduced from top to bottom, and a groove is formed in the side wall of the cutter body; the adjusting block is positioned in the groove of the cutter body, the adjusting block is connected with the cutter body through a locking screw, and the locking screw penetrates through the adjusting block and is inserted into the cutter body; the chamfering blade is arranged on the adjusting block, the boring cutter blade is arranged on the cutter body, and the boring cutter blade is positioned above the chamfering blade. In this way, the utility model discloses can carry out bore hole and chamfer processing to connecting rod crankshaft mounting hole to can carry out chamfer processing to the tow sides of mounting hole, need not the relocation, reduce process time, raise the efficiency, can effectively guarantee the uniformity of product machining precision simultaneously, improve the product yields.
Description
Technical Field
The utility model relates to a cutting process technical field especially relates to a processing cutter for connecting rod crankshaft mounting hole.
Background
The manufacturing process of the connecting rod mainly comprises the following steps: forging a connecting rod blank and finishing the connecting rod blank. The fine machining of the connecting rod blank comprises the following steps: processing a bolt hole, preprocessing and chamfering a crankshaft hole, and preprocessing a piston hole; cracking and assembling bolts; grinding the end surfaces of the two sides; a crankshaft bore and a piston bore; grouping and coding the aperture weight; cleaning and rust prevention; and (4) carrying out piston hole phosphating treatment. Wherein, need to use the cutter to carry out the preprocessing and the chamfer of bent axle hole in the machining process.
The traditional processing mode is that after a standard boring cutter is used for boring holes, a chamfering cutter is replaced to chamfer the front side of an orifice of a crankshaft hole, and after a connecting rod is overturned and installed again, the chamfering cutter is used for chamfering the back side orifice of the crankshaft hole. The mode has long processing time, and the situation of inconsistent processing precision is easy to occur due to repeated clamping and positioning.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a processing cutter for connecting rod crankshaft mounting hole can carry out bore hole and chamfer processing to connecting rod crankshaft mounting hole to can carry out chamfer processing to the tow sides of mounting hole, improve machining efficiency, guarantee the machining precision.
In order to achieve the above object, the technical solution of the present invention is:
a machining tool for connecting rod crankshaft mounting holes, comprising: the cutter body, an adjusting block, a locking screw, a chamfering blade and a boring cutter blade; the cutter body is cylindrical, the diameter of the cutter body is reduced from top to bottom, and a groove is formed in the side wall of the cutter body; the adjusting block is positioned in the groove of the cutter body, the adjusting block is connected with the cutter body through a locking screw, and the locking screw penetrates through the adjusting block and is inserted into the cutter body; the chamfering blade is arranged on the adjusting block, the boring cutter blade is arranged on the cutter body, and the boring cutter blade is positioned above the chamfering blade.
Preferably, the cutter body further comprises a height adjusting piece, the height adjusting piece is located in the groove of the cutter body and connected to the adjusting block, the height adjusting piece is in threaded connection with the adjusting block, one end of the height adjusting piece is inserted into the adjusting block, and the other end of the height adjusting piece is abutted to the cutter body.
Preferably, the cutter also comprises a chamfer diameter adjusting piece, the chamfer diameter adjusting piece penetrates through the adjusting block to be abutted against the cutter body, and the chamfer diameter adjusting piece is in threaded connection with the cutter body.
Preferably, the tool also comprises a boring diameter adjusting piece, the boring diameter adjusting piece is inserted on the tool body, and the boring diameter adjusting piece is in threaded connection with the tool body.
Preferably, the side wall of the bore diameter adjusting piece is abutted against the boring cutter blade, and the surface of the boring cutter blade, which is in contact with the bore diameter adjusting piece, is an inclined surface.
Preferably, the blade edges of the chamfering blade and the boring cutter blade form an included angle of 75 degrees with the axis of the mounting hole.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model has the following beneficial effect:
the utility model provides a processing cutter for connecting rod crankshaft mounting hole can carry out bore hole and chamfer processing to connecting rod crankshaft mounting hole to can carry out chamfer processing to the tow sides of mounting hole, need not the relocation, reduce process time, raise the efficiency, can effectively guarantee the uniformity of product machining precision simultaneously, improve the product yields.
Drawings
Fig. 1 is a schematic structural view of a machining tool for connecting rod crankshaft mounting holes of the present invention.
Fig. 2 is a front view of the present invention, which is used for a connecting rod and crankshaft mounting hole.
Fig. 3 is a schematic structural view of another angle of the machining tool for the connecting rod crankshaft mounting hole of the present invention.
Description of reference numerals: the cutter body 1, an adjusting block 2, a locking screw 3, a chamfering blade 4, a boring cutter blade 5, a height adjusting piece 6, a chamfering diameter adjusting piece 7 and a boring diameter adjusting piece 8.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to the drawings, a machining tool for a connecting rod crankshaft mounting hole comprises: the cutter body 1, the adjusting block 2, the locking screw 3, the chamfering blade 4 and the boring cutter blade 5. The cutter body 1 is set to be cylindrical, and the diameter of the cutter body 1 is reduced from top to bottom. Because the degressive setting of cutter body 1 diameter, after the completion was chamfered the bottom of connecting rod bent axle mounting hole, move down the connecting rod or this processing cutter of rebound, can carry out the chamfer processing to the top of connecting rod bent axle mounting hole, need not to reposition after the connecting rod turn-over, can effectively guarantee positioning accuracy's uniformity to guarantee the uniformity of chamfer processing precision.
The side wall of the cutter body 1 is provided with a groove in the vertical direction, the adjusting block 2 is positioned in the groove of the cutter body 1, the adjusting block 2 is connected with the cutter body 1 through a locking screw 3, the locking screw 3 penetrates through the adjusting block 2 to be inserted into the cutter body 1, and the adjusting block 2 is fixed on the cutter body 1 through a sleeve locking screw 3. The chamfering blade 4 is arranged on the adjusting block 2, and the boring blade 5 is arranged on the cutter body 1. The boring cutter blade 5 is positioned above the chamfering blade 4, and the boring cutter blade 5 may be provided at the top end of the cutter body 1. When the connecting rod is machined, boring operation is firstly carried out, chamfering operation is carried out on the bottom end of the mounting hole, and finally chamfering operation is carried out on the top end of the mounting hole.
In order to enable connecting rods with different sizes to be used, the machining tool further comprises a height adjusting piece 6, the height adjusting piece 6 is located in a groove of the tool body 1, the height adjusting piece 6 is connected to the adjusting block 2, the height adjusting piece 6 is in threaded connection with the adjusting block 2, one end of the height adjusting piece 6 is inserted into the adjusting block 2, and the other end of the height adjusting piece 6 is abutted to the bottom end of the groove of the tool body 1. And loosening the locking screw 3, screwing the height adjusting piece 6 into the adjusting block 2 by a proper depth, so as to change the distance from the bottom end of the adjusting block 2 to the bottom end of the groove of the cutter body 1, wherein the length of the height adjusting piece 6 protruding out of the adjusting block 2 is the distance. The height of the height adjusting piece 6 is adjusted, and the locking screw 3 is screwed down to complete the height adjustment of the chamfering blade 4.
The machining tool further comprises a chamfer diameter adjusting piece 7, the chamfer diameter adjusting piece 7 penetrates through the adjusting block 2 to be abutted to the tool body 1, and the chamfer diameter adjusting piece 7 is in threaded connection with the tool body 1. The distance of the chamfer diameter adjusting piece 7 protruding out of the adjusting block 2 is the gap between the chamfer diameter adjusting piece 7 and the adjusting block 2, and the size of the gap determines the width of the protruding part of the chamfer blade 4, so that the size of the chamfer diameter can be changed.
This processing cutter of this processing cutter still includes bore hole diameter adjustment piece 8, and bore hole diameter adjustment piece 8 is inserted and is established on cutter body 1, and bore hole diameter adjustment piece 8 and cutter body 1 are threaded connection. The side wall of the boring diameter adjusting piece 8 is abutted against the boring cutter blade 5, the surface of the boring cutter blade 5, which is in contact with the boring diameter adjusting piece 8, is an inclined surface, and the distance from the lower end of the boring cutter blade 5 to the diameter adjusting piece is smaller than the distance from the upper end of the boring cutter blade 5 to the diameter adjusting piece. When the boring diameter adjusting part 8 is screwed deeper into the cutter body 1, the boring cutter blade 5 is farther from the central axis of the cutter body 1, that is, the part of the boring cutter blade 5 protruding out of the cutter body 1 is wider, so that the size of the boring diameter can be changed.
Considering the stress direction of cutting force generated during cutting, the blade edges of the chamfering blade 4 and the boring blade 5 form an included angle of 75 degrees with the axis of the mounting hole, so that most of cutting fluid is dispersed towards the axis direction of the hole, the vibration of a cutter during processing is avoided, the deformation of the roundness in the hole after the processing is finished is avoided, and the processing quality can be ensured.
In the actual processing process, the cutter is arranged on a four-spindle processing center, four parts can be processed at one time during processing, and the consistency of four simultaneously processed cutters is high. Therefore, a height adjusting member 6 and a chamfer diameter adjusting member 7 are added in designing the chamfer part for adjusting the four cutters to the same size. The height adjusting piece 6 is rotated clockwise, so that the adjusting block 2 of the chamfering blade 4 can be moved downwards. The chamfer diameter adjusting piece 7 is rotated clockwise, so that the adjusting block 2 of the chamfer blade 4 can move towards the outer side of the cutter body 1, and the aim of adjusting the chamfer diameter is fulfilled. After the adjustment is finished, the locking screws 3 can be pre-tightened, and whether the sizes of the four cutters are at the same position or not is verified on the cutter setting gauge.
When the boring diameter adjusting piece 8 is screwed down clockwise, the edge of the side wall of the boring diameter adjusting piece 8 extrudes the boring cutter blade 5 to form an included angle, so that the boring cutter blade 5 deviates outwards to achieve the purpose of adjusting the diameter of the boring hole. After the adjustment is finished, the locking bolt can be pre-tightened, and whether the sizes of the four cutters are at the same position or not can be verified on the cutter setting gauge.
Because the cutting force generated during cutting can generate larger vibration, the material of high-speed steel is adopted as the material of the blade of the cutter, and the cutter has higher strength and toughness and good comprehensive performance. The adjusting block 2 is made of hard alloy as a connecting piece, so that the service life is ensured under the condition of ensuring the cutting quality.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (6)
1. A machining tool for connecting rod crankshaft mounting holes, comprising: the cutter body, an adjusting block, a locking screw, a chamfering blade and a boring cutter blade; the cutter body is cylindrical, the diameter of the cutter body is reduced from top to bottom, and a groove is formed in the side wall of the cutter body; the adjusting block is positioned in the groove of the cutter body, the adjusting block is connected with the cutter body through a locking screw, and the locking screw penetrates through the adjusting block and is inserted into the cutter body; the chamfering blade is arranged on the adjusting block, the boring cutter blade is arranged on the cutter body, and the boring cutter blade is positioned above the chamfering blade.
2. The machining tool for the connecting rod crankshaft mounting hole as set forth in claim 1, wherein: the cutter body is characterized by further comprising a height adjusting piece, the height adjusting piece is located in the groove of the cutter body and connected to the adjusting block, the height adjusting piece is in threaded connection with the adjusting block, one end of the height adjusting piece is inserted into the adjusting block, and the other end of the height adjusting piece is abutted to the cutter body.
3. The machining tool for the connecting rod crankshaft mounting hole as set forth in claim 1, wherein: the cutter body is in threaded connection with the adjusting block, and the diameter of the cutter body is adjusted through the adjusting block.
4. The machining tool for the connecting rod crankshaft mounting hole as set forth in claim 1, wherein: the cutter body is characterized by further comprising a boring diameter adjusting piece, the boring diameter adjusting piece is inserted on the cutter body, and the boring diameter adjusting piece is in threaded connection with the cutter body.
5. The machining tool for the connecting rod crankshaft mounting hole as set forth in claim 4, wherein: the side wall of the boring diameter adjusting piece is abutted against the boring cutter blade, and the surface of the boring cutter blade, which is in contact with the boring diameter adjusting piece, is an inclined surface.
6. The machining tool for the connecting rod crankshaft mounting hole as set forth in claim 1, wherein: the blade edges of the chamfering blade and the boring cutter blade form an included angle of 75 degrees with the axis of the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023215943.6U CN214350802U (en) | 2020-12-28 | 2020-12-28 | Machining tool for connecting rod crankshaft mounting hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023215943.6U CN214350802U (en) | 2020-12-28 | 2020-12-28 | Machining tool for connecting rod crankshaft mounting hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214350802U true CN214350802U (en) | 2021-10-08 |
Family
ID=77947942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023215943.6U Active CN214350802U (en) | 2020-12-28 | 2020-12-28 | Machining tool for connecting rod crankshaft mounting hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214350802U (en) |
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2020
- 2020-12-28 CN CN202023215943.6U patent/CN214350802U/en active Active
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