CN211276553U - PCD (polycrystalline Diamond) forming cutter for grooves in inner cavity of automobile part - Google Patents
PCD (polycrystalline Diamond) forming cutter for grooves in inner cavity of automobile part Download PDFInfo
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- CN211276553U CN211276553U CN201922316645.7U CN201922316645U CN211276553U CN 211276553 U CN211276553 U CN 211276553U CN 201922316645 U CN201922316645 U CN 201922316645U CN 211276553 U CN211276553 U CN 211276553U
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Abstract
The utility model provides an automobile part inner chamber slot PCD shaping sword, including handle of a knife and cutter arbor, be equipped with along the axial on the cutter arbor from the front end to the handle of a knife direction and be used for the fashioned second blade of slot shaping, wherein, inside first blade one end embedding cutter arbor, and the cutting edge of first blade outwards outstanding in the cutter arbor, the cutting edge includes tank bottom shaping portion and the symmetrical lateral wall shaping portion and the wall transition shaping portion that set up in tank bottom shaping portion both sides and connect gradually, form the contained angle that the size is alpha between wall transition shaping portion and the cutter arbor axis; the second blade is provided with a chamfer edge, the chamfer edge is gradually far away from the cutter bar from the front end to the rear end, and an included angle with the axis of the cutter bar is beta. The problem of the difficult processing of customer at processing automobile parts inner chamber slot is solved, product surface accuracy and quality have been improved, and one shot forming has promoted machining efficiency, has increased the cutter life-span and has reduced manufacturing cost.
Description
Technical Field
The utility model relates to a cutter technical field especially relates to an automobile parts inner chamber slot PCD shaping sword.
Background
With the improvement of living standard of people, the automobile as a common vehicle has been brought into every family. Therefore, it is important to ensure the safety of the automobile during the use.
The machining precision of each part of the automobile directly influences the quality of the automobile, further influences the safety performance of the automobile, and has potential safety hazards to drivers and passengers. Particularly, in the most important parts such as an automobile engine system, a steering system and the like, a large number of inner holes and inner cavity grooves are processed, and the port parts of the parts are also provided with chamfers,
the main function is to increase the torque transmitted by the steering wheel to the steering gear and to change the direction of force transmission. The steering gear shell is provided with a plurality of holes, different step surfaces and chamfers are arranged on the inner wall and the outer wall of each hole, as shown in figure 1, each hole is of a hole-shaped component structure, two concave rings A and B are arranged on the inner wall of each hole, chamfers are arranged at the bottoms and the edges of the concave rings, the concave rings are connected with the inner wall of the hole cavity, transition of a certain angle alpha is formed, chamfers C are arranged at the hole openings, and the angle is beta. The inner wall and the outer wall of the existing processing mode are processed by different procedures, different cutters need to be replaced, and the coaxiality of the front part and the rear part cannot be guaranteed to be completely consistent after the cutters are replaced, so that the coaxiality and other indexes of the inner hole concave ring and the outer wall step of the processed product cannot meet the processing requirements, and the product percent of pass is reduced; in addition, frequent replacement of the tool complicates the process and reduces the machining efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: in order to overcome the deficiencies in the prior art, the utility model provides an automobile parts inner chamber slot PCD shaping sword.
The utility model provides a technical scheme that its technical problem will adopt is: a PCD molding cutter for grooves in inner cavities of automobile parts comprises a cutter handle and a cutter rod, wherein a first blade for groove molding and a second blade for end chamfer molding are axially arranged on the cutter rod from the front end to the direction of the cutter handle, wherein,
one end of the first blade is embedded into the cutter bar, the cutting edge of the first blade protrudes out of the cutter bar, the cutting edge comprises a groove bottom forming part, a side wall forming part and a wall surface transition forming part, the side wall forming part and the wall surface transition forming part are symmetrically arranged on two sides of the groove bottom forming part and are sequentially connected, the section shape of the cutting edge part enclosed by the side wall forming part of the groove bottom forming part is rectangular, one end of the wall surface transition forming part is connected with the side wall forming part, the other end of the wall surface transition forming part extends outwards along the axial direction of the cutter bar, and an included angle with the size of alpha is formed between the;
one end of the second blade is embedded into the cutter bar, the other end of the second blade protrudes out of the surface of the cutter bar to form a chamfer edge, and the chamfer edge is gradually far away from the cutter bar from the front end to the rear end and forms an included angle beta with the axis of the cutter bar.
The more the number of the first blades is, the more the grooves formed at one time are, so that the processing time is saved, and therefore, the number of the first blades of the PCD cutter can be set according to the requirement; in addition, the bottom of the cutting edge of the cutter is provided with an inclined plane with a certain inclination angle, so that on one hand, good transition can be formed between the groove and the wall surface of the inner cavity, and on the other hand, the influence on the wall surface of the inner cavity which does not need to be processed can be avoided.
Further, in order to avoid the problem that the edges and corners of the grooves in the inner cavity are too sharp and difficult to machine, the cutting edge of the first blade further comprises a bottom chamfer forming part and a top chamfer forming part, wherein the bottom chamfer forming part is an outward convex arc with the radius of R1 and is transitionally connected between the bottom chamfer forming part and the side wall forming part; the top chamfer forming part is an inward concave arc with the radius of R2 and is in transitional connection between the side wall forming part and the wall surface transitional forming part.
Specifically, the first blades are at least two groups, each group is at least two, the blades of the same group are symmetrically distributed on the same circumference of the cutter bar along the radial direction, and the blades between the adjacent groups are arranged in a line along the axial direction of the cutter bar.
Preferably, the angle α is in the range of 4 ° to 8 °.
Preferably, the included angle α is 5 °.
Preferably, the included angle β is in the range of 15 ° to 25 °.
Preferably, the included angle β is 20 °.
Preferably, the first blade and the second blade are both made of PCD.
The utility model has the advantages that: the utility model provides a PCD forming cutter for grooves in inner cavities of automobile parts, which selects German imported brand element six as raw materials, adopts a cutter handle integrated structure to greatly increase the rigidity of the cutter after the structure is elaborately designed; the tool is precisely manufactured by using German import equipment VOLLMER, so that the problem that a customer is difficult to machine a groove in an inner cavity of an automobile part is solved, the surface precision and quality of a product machined by the customer are improved, the machining efficiency is improved by one-step forming, the service life of the tool is prolonged, the production cost is reduced, and the advantages of a PCD molding tool are highlighted.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of a structure of a hole-shaped workpiece.
Fig. 2 is a schematic structural diagram of the preferred embodiment of the present invention.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is a schematic view of the initial positions of the tool and the workpiece at the beginning of machining.
Fig. 5 is a schematic view of the initial positions of the tool and the workpiece during machining.
Fig. 6 is a schematic view of the initial positions of the machining completion tool and the workpiece.
In the figure: 1. the cutter comprises a cutter handle, 2, a cutter rod, 3, a first blade, 31, a groove bottom forming part, 32, a bottom chamfer forming part, 33, a side wall forming part, 34, a top chamfer forming part, 35, a wall surface transition forming part, 4, a second blade, 41, a chamfer edge, 5, a cooling liquid channel, 6 and a drainage groove.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.
For clarity, in the embodiment, the side of the tool holder 2 of the tool is the front end, and the side of the tool holder 1 is the rear end.
As shown in fig. 2 and 3, the utility model discloses an automobile parts inner chamber slot PCD shaping sword, including handle of a knife 1 and cutter arbor 2, be equipped with along the axial from the front end to handle of a knife 1 direction on the cutter arbor 2 and be used for the fashioned second blade 4 of tip chamfer for slot fashioned first blade 3, first blade 3 and second blade 4 all adopt PCD to make. The number of the first blades 3 is at least two, each group is at least two, the blades of the same group are symmetrically distributed on the same circumference of the cutter bar 2 along the radial direction, and the blades between the adjacent groups are arranged in a line along the axial direction of the cutter bar 2. In this embodiment, there are two sets of first blades 3, and there are two sets of first blades. The first blade 3 has an outer diameter of revolution ∅ of 63mm with a tolerance of + -0.01 mm, and the first blade 3 has a height H of 5.74mm with a tolerance of + -0.02 mm.
One end of the first blade 3 is embedded into the cutter bar 2, a cutting edge of the first blade 3 protrudes outwards from the cutter bar 2, the cutting edge comprises a groove bottom forming part 31, a side wall forming part 33 and a wall surface transition forming part 35, the side wall forming part 33 and the wall surface transition forming part 35 are symmetrically arranged on two sides of the groove bottom forming part 31 and are sequentially connected, the section shape of a cutting edge part enclosed by the side wall forming part 33 of the groove bottom forming part 31 is rectangular, one end of the wall surface transition forming part 35 is connected with the side wall forming part 33, the other end of the wall surface transition forming part extends outwards along the axial direction of the cutter bar 2, and an included angle with the size of alpha is formed; the angle α preferably ranges from 4 to 8, and in this embodiment is 5. The distance between the first blades 3 is set according to the distance of the grooves of the workpiece.
One end of the second blade 4 is embedded into the cutter bar 2, and the other end protrudes out of the surface of the cutter bar 2 to form a chamfer edge 41, wherein the chamfer edge 41 is gradually far away from the cutter bar 2 from the front end to the rear end and forms an included angle with the axis of the cutter bar 2, and the included angle is beta. The included angle beta is preferably in the range of 15 deg. -25 deg., in this embodiment 20 deg., and the length L of the chamfer edge 41 is 3.0 mm.
In order to avoid the problem that the edges and corners of the inner cavity groove are too sharp and difficult to machine, the cutting edge of the first blade 3 further comprises a bottom chamfer forming part 32 and a top chamfer forming part 34, wherein the bottom chamfer forming part 32 is an outward convex arc with the radius of R1 and is transitionally connected between the groove bottom forming part 31 and the side wall forming part 33; the top chamfer forming part 34 is an inward concave arc with the radius of R2 and is transitionally connected between the side wall forming part 33 and the wall surface transition forming part 35. In this example, R1 is 0.4mm and R2 is 1 mm.
In order to ensure the processing precision and the service life of the cutter, a cooling liquid channel 5 is arranged inside the cutter rod 2, and a drain groove 6 is arranged on the surface of the cutter rod 2.
The utility model discloses a cutter structure is applicable to the processing of inner chamber slot, like hole slot, cylinder slot etc. now uses the processing of hole slot as the example to explain course of working.
As shown in fig. 4, the tool shank 2 of the PCD forming tool is inserted into the inner hole of the workpiece, and the length of the insertion is adjusted to align the positions of the recessed rings a and B, and the position of the chamfer C. Then, as shown in fig. 5, since the recessed rings a and B are relatively deep, the first blade 3 starts to be machined first. The tool is rotated relative to the workpiece on the one hand and is fed linearly in the direction of the groove on the other hand, as shown in fig. 6, and the formation of the chamfer C is completed in the last second insert 4.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides an automobile parts inner chamber slot PCD becomes cutting tool which characterized in that: comprises a knife handle and a knife bar, wherein a first blade for groove forming and a second blade for end chamfer forming are axially arranged on the knife bar from the front end to the knife handle, wherein,
one end of the first blade is embedded into the cutter bar, the cutting edge of the first blade protrudes out of the cutter bar, the cutting edge comprises a groove bottom forming part, a side wall forming part and a wall surface transition forming part, the side wall forming part and the wall surface transition forming part are symmetrically arranged on two sides of the groove bottom forming part and are sequentially connected, the section shape of the cutting edge part enclosed by the side wall forming part of the groove bottom forming part is rectangular, one end of the wall surface transition forming part is connected with the side wall forming part, the other end of the wall surface transition forming part extends outwards along the axial direction of the cutter bar, and an included angle with the size of alpha is formed between the;
one end of the second blade is embedded into the cutter bar, the other end of the second blade protrudes out of the surface of the cutter bar to form a chamfer edge, and the chamfer edge is gradually far away from the cutter bar from the front end to the rear end and forms an included angle beta with the axis of the cutter bar.
2. The PCD-forming tool of claim 1, wherein: the cutting edge of the first blade further comprises a bottom chamfer forming part and a top chamfer forming part, wherein the bottom chamfer forming part is an outward convex arc with the radius of R1 and is transitionally connected between the groove bottom forming part and the side wall forming part; the top chamfer forming part is an inward concave arc with the radius of R2 and is in transitional connection between the side wall forming part and the wall surface transitional forming part.
3. The PCD-forming tool of claim 2, wherein: the first blades are at least two groups, each group is at least two, the blades of the same group are symmetrically distributed on the same circumference of the cutter bar along the radial direction, and the blades between the adjacent groups are arranged in a line along the axial direction of the cutter bar.
4. The PCD-forming tool of claim 1, wherein: the included angle alpha ranges from 4 degrees to 8 degrees.
5. The PCD-forming tool of claim 4, wherein: the included angle alpha is 5 degrees.
6. The PCD-forming tool of claim 1, wherein: the included angle beta ranges from 15 degrees to 25 degrees.
7. The PCD-forming tool of claim 5, wherein: the included angle beta is 20 degrees.
8. The PCD-forming tool of claim 1, wherein: the first blade and the second blade are both made of PCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922316645.7U CN211276553U (en) | 2019-12-21 | 2019-12-21 | PCD (polycrystalline Diamond) forming cutter for grooves in inner cavity of automobile part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922316645.7U CN211276553U (en) | 2019-12-21 | 2019-12-21 | PCD (polycrystalline Diamond) forming cutter for grooves in inner cavity of automobile part |
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| CN211276553U true CN211276553U (en) | 2020-08-18 |
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| CN201922316645.7U Active CN211276553U (en) | 2019-12-21 | 2019-12-21 | PCD (polycrystalline Diamond) forming cutter for grooves in inner cavity of automobile part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000874A (en) * | 2019-12-21 | 2021-06-22 | 常州冶戈工具有限公司 | PCD (polycrystalline Diamond) forming cutter for grooves in inner cavity of automobile part |
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2019
- 2019-12-21 CN CN201922316645.7U patent/CN211276553U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000874A (en) * | 2019-12-21 | 2021-06-22 | 常州冶戈工具有限公司 | PCD (polycrystalline Diamond) forming cutter for grooves in inner cavity of automobile part |
| CN113000874B (en) * | 2019-12-21 | 2024-05-10 | 常州冶戈工具有限公司 | PCD forming cutter for inner cavity groove of automobile part |
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