CN214814891U - Cutter for processing inner and outer holes of differential transmission shell - Google Patents
Cutter for processing inner and outer holes of differential transmission shell Download PDFInfo
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- CN214814891U CN214814891U CN202120572839.8U CN202120572839U CN214814891U CN 214814891 U CN214814891 U CN 214814891U CN 202120572839 U CN202120572839 U CN 202120572839U CN 214814891 U CN214814891 U CN 214814891U
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Abstract
The utility model relates to a cutter in processing differential transmission casing internal and external hole, the last fashioned power input hole of casting and the power take off hole of having of differential transmission casing, the cutter is including processing power input hole inner wall, the compound sword of drill way and hole end, and the positive and negative boring cutter of processing power input hole and power take off hole medial extremity, compound sword includes the handle of a knife, the front end of handle of a knife is the cutting head, its rear end is equipped with the installation department of installing on the centre gripping equipment, positive and negative boring cutter includes the cutter arbor, the front end of cutter arbor is equipped with the boring head of its axis eccentric settings relatively, the maximum diameter of cutter arbor front end is less than the diameter in power input hole. The utility model can process and form the boring of the inner wall of the power input hole on the differential transmission shell, the chamfering of the orifice and the countersink of the hole end part at one time by the compound cutter, thereby reducing the clamping time and ensuring the processing quality; the inner side ends of the power input hole and the power output hole can be bored by the positive and negative boring cutters, two boring cutters are not needed, and the efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the metal cutting tool technique and specifically relates to a cutter of processing differential transmission casing internal and external hole.
Background
As shown in fig. 1, after the differential transmission casing is cast, a power input hole and a power output hole on the casing need to be finished, and the hole wall, the orifice and the hole end of the power input hole are respectively bored, chamfered and reamed, and three cutters, namely a boring cutter, a chamfering cutter and a reamed cutter, need to be used to sequentially process the parts before, so that the differential transmission casing has low processing efficiency and low processing quality, and the coaxiality during processing is difficult to ensure to be consistent due to the addition of different cutters; in addition, boring is required for the inner ends of the power input hole and the power output hole inside the housing, and the conventional boring cutter is inserted into the housing from two openings to bore, which results in machining two coaxial holes with a deviated coaxiality.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a cutter for processing the inner hole and the outer hole of the differential transmission shell.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a cutter of processing differential transmission casing internal and external hole, cast molding's power input hole and power take off hole have on the differential transmission casing, the cutter is including processing the compound sword of power input hole inner wall, drill way and hole end to and the positive and negative boring cutter of processing power input hole and power take off hole medial extremity, compound sword includes the handle of a knife, the front end of handle of a knife is the cutting head, and its rear end is equipped with the installation department of installing on the clamping equipment, positive and negative boring cutter includes the cutter arbor, the front end of cutter arbor is equipped with the boring head of its eccentric settings of axis relatively, the maximum diameter of cutter arbor front end is less than the diameter in power input hole.
The compound cutter can machine and form the boring of the inner wall of the power input hole, the chamfering of the hole opening and the spot facing of the hole end part at one time, thereby reducing the clamping time and ensuring the machining quality; the forward and reverse boring cutters can be used for boring the inner side ends of the power input hole and the power output hole, and the efficiency is improved.
In order to ensure the quality of one-step machining forming, the cutting head comprises a shoulder part and a rod part, a boring blade for machining the inner wall of the power input hole is arranged at the front end of the rod part, a chamfering blade for machining the hole orifice of the power input hole is arranged at the intersection of the rod part and the shoulder part, and a counter-sunk blade for machining the end face of the power input hole is arranged on the end face of the shoulder part.
In order to prolong the service life of the blade and improve the smoothness during processing, the boring blade, the chamfering blade and the countersinking blade are further limited, the boring blade, the chamfering blade and the countersinking blade are of the same structure and are of a diamond structure, and four corners of the boring blade, the chamfering blade and the countersinking blade are round chamfers.
In order to facilitate the cutting of the tip of the chamfering blade, it is further defined that the side of the chamfering blade contacting the power input hole orifice is disposed at an angle of 30 degrees to the axis of the shaft portion.
In order to facilitate processing, the cutter bar comprises a boring head, a straight rod part, a connecting part and a clamping part, wherein the boring head is arranged at the front end of the straight rod part, an outer blade and an inner blade are sequentially arranged on the outer circumferential surface of the boring head from front to back, the outer blade and the inner blade are oppositely arranged, and the included angle between the outer edges of the outer blade and the inner blade is 10 degrees.
In order to avoid damage to the end of the processed power input hole by the joint part, the joint part is further limited to be in a circular truncated cone structure, and an included angle between two generatrices of the joint part in the circular truncated cone structure is 140 degrees.
In order to facilitate the cutting of the tool tips of the outer blade and the inner blade, the tool tips of the outer blade and the inner blade are positioned on the central line of the tool bar, and an included angle between the plane where the edge surfaces of the outer blade and the inner blade are positioned and the axial section where the tool tips of the outer blade and the inner blade are positioned is 7 degrees.
The utility model has the advantages that: the utility model can process and form the boring of the inner wall of the power input hole on the differential transmission shell, the chamfering of the orifice and the countersink of the hole end part at one time by the compound cutter, thereby reducing the clamping time and ensuring the processing quality; the inner side ends of the power input hole and the power output hole can be bored by the positive and negative boring cutters, two boring cutters are not needed, and the efficiency is improved.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural view of a differential transmission case of the present invention.
Fig. 2 is a schematic structural view of the compound knife of the present invention.
FIG. 3 is a schematic structural view of the compound knife machining a differential transmission housing.
Fig. 4 is a schematic structural view of the middle forward and backward boring cutter of the present invention.
Figure 5 is a side view of the boring head of figure 4.
FIG. 6 is a schematic structural diagram of the forward and reverse boring tools when machining the transmission housing.
In the figure: 1. the differential transmission comprises a differential transmission housing, 2, a composite cutter, 3, a positive and negative boring cutter, 11, a power input hole, 12, a power output hole, 21, a cutter handle, 22, a boring cutter blade, 23, a chamfering blade, 24, a countersink cutter blade, 211, a cutting head, 212, a mounting part, 2111, a shoulder part, 2112, a rod part, 31, a cutter rod, 311, a boring head, 312, a straight rod part, 313, a connecting part, 314, a clamping part, 315, an outer cutter blade and 316, an inner cutter blade.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
As shown in figure 1, a tool for machining the inner hole and the outer hole of a differential transmission shell is provided, the differential transmission shell 1 is provided with a power input hole 11 and a power output hole 12 which are formed by casting,
as shown in fig. 2 to 6, the cutting tool comprises a compound cutter 2 for processing the inner wall, the orifice and the hole end of the power input hole 11, and a positive and negative boring cutter 3 for processing the inner side ends of the power input hole 11 and the power output hole 12,
as shown in fig. 2, the compound cutter 2 includes a cutter holder 21, a cutting head 211 is provided at the front end of the cutter holder 21, a mounting portion 212 for mounting to a clamping device is provided at the rear end of the cutter holder, the cutting head 211 includes a shoulder portion 2111 and a rod portion 2112, a boring blade 22 for machining the inner wall of the power input hole 11 is provided at the front end of the rod portion 2112, a chamfering blade 23 for machining the aperture of the power input hole 11 is provided at the intersection of the rod portion 2112 and the shoulder portion 2111, and a countersink blade 24 for machining the hole end face of the power input hole 11 is provided on the end face of the shoulder portion 2111. The boring blade 22, the chamfering blade 23 and the countersink blade 24 are identical in structure and are all of a diamond structure, and four corners of the boring blade, the chamfering blade 23 and the countersink blade are round chamfers. The side of the chamfer blade 23 that contacts the power input hole 11 orifice is disposed at a 30 degree angle to the axis of the stem 2112.
As shown in fig. 3, the compound cutter 2 is inserted into the power input hole 11, the inner wall of the hole is bored by the boring blade 22 while being inserted, and when the chamfering blade 23 reaches the intersection of the shaft portion 2112 and the shoulder portion 2111, the chamfering blade 23 and the countersink blade 24 simultaneously machine the hole opening and the hole end face, respectively.
As shown in fig. 4, the forward and reverse boring cutter 3 includes a cutter bar 31, a boring head 311 eccentrically disposed with respect to an axis of the cutter bar 31 is provided at a front end of the cutter bar 31, and a maximum diameter of the front end of the cutter bar 31 is smaller than a diameter of the power input hole 11. The cutter bar 31 comprises a boring head 311, a straight rod part 312, a connecting part 313 and a clamping part 314, the boring head 311 is arranged at the front end of the straight rod part 312, an outer blade 315 and an inner blade 316 are sequentially arranged on the outer circumferential surface of the boring head from front to back, the outer blade 315 and the inner blade 316 are oppositely arranged, and the included angle between the outer sides of the outer blade 315 and the inner blade 316 is 10 degrees. The joining part 313 is in a circular truncated cone structure, and an included angle between two generatrices of the joining part 313 in the circular truncated cone structure is 140 degrees. As shown in fig. 5, the tips of the outer blade 315 and the inner blade 316 are located on the center line of the tool holder 31, and the included angle between the plane of the cutting surfaces of the outer blade 315 and the inner blade 316 and the axial section of the tips of the outer blade 315 and the inner blade 316 is 7 degrees.
After the cutter bar 31 enters from the power input hole 11 and the boring head 311 reaches the inner cavity of the differential transmission housing 1, the cutter bar 31 moves back until the boring head 311 reaches the inner end of the power input hole 11, and the inner blade 316 performs boring processing on the inner end, as shown in fig. 6 (a); after machining, the cutter bar 31 extends into the inner cavity until the boring head 311 reaches the inner end of the power output hole 12, and the outer cutter blade 315 performs boring machining on the inner end, as shown in fig. 6 (b); after machining, the arbor 31 slowly comes out of the differential case 1.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (7)
1. A tool for machining internal and external holes of a differential transmission housing, which is provided with a power input hole and a power output hole which are formed by casting, is characterized in that: the cutter is including processing the compound sword of power input hole inner wall, drill way and hole end to and the positive and negative boring cutter of processing power input hole and power take off hole medial extremity, compound sword includes the handle of a knife, the front end of handle of a knife is the cutting head, and its rear end is equipped with the installation department of installing on the centre gripping equipment, positive and negative boring cutter includes the cutter arbor, the front end of cutter arbor is equipped with the boring head of its eccentric settings of axis relatively, the maximum diameter of cutter arbor front end is less than the diameter in power input hole.
2. The tool for machining the inner and outer bores of the differential transmission case according to claim 1, wherein: the cutting head comprises a shoulder and a rod part, the front end of the rod part is provided with a boring blade for processing the inner wall of the power input hole, the intersection of the rod part and the shoulder part is provided with a chamfering blade for processing the orifice of the power input hole, and the end face of the shoulder part is provided with a counter-sunk blade for processing the end face of the power input hole.
3. The tool for machining the inner and outer bores of the differential transmission case according to claim 2, wherein: the boring blade, the chamfering blade and the countersink blade are of the same structure and are of a diamond structure, and four corners of the boring blade, the chamfering blade and the countersink blade are round chamfers.
4. The tool for machining the inner and outer bores of the differential transmission case according to claim 2, wherein: the side edge of the chamfer blade contacting the power input hole orifice is arranged at an angle of 30 degrees with the axis of the rod part.
5. The tool for machining the inner and outer bores of the differential transmission case according to claim 1, wherein: the cutter bar comprises a boring head, a straight rod part, a connecting part and a clamping part, wherein the boring head is arranged at the front end of the straight rod part, an outer blade and an inner blade are sequentially arranged on the outer circumferential surface of the boring head from front to back, the outer blade and the inner blade are oppositely arranged, and the included angle between the outer edges of the outer blade and the inner blade is 10 degrees.
6. The tool for machining internal and external bores of a differential transmission case according to claim 5, wherein: the joint part is in a circular truncated cone structure, and an included angle between two bus bars of the joint part in the circular truncated cone structure is 140 degrees.
7. The tool for machining internal and external bores of a differential transmission case according to claim 5, wherein: the tool noses of the outer side blade and the inner side blade are both positioned on the center line of the tool bar, and the included angle between the plane where the blade surfaces of the outer side blade and the inner side blade are positioned and the axial section where the tool noses of the outer side blade and the inner side blade are positioned is 7 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572839.8U CN214814891U (en) | 2021-03-19 | 2021-03-19 | Cutter for processing inner and outer holes of differential transmission shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572839.8U CN214814891U (en) | 2021-03-19 | 2021-03-19 | Cutter for processing inner and outer holes of differential transmission shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214814891U true CN214814891U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120572839.8U Active CN214814891U (en) | 2021-03-19 | 2021-03-19 | Cutter for processing inner and outer holes of differential transmission shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214814891U (en) |
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2021
- 2021-03-19 CN CN202120572839.8U patent/CN214814891U/en active Active
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