CN209139984U - A kind of PCD combination cutter - Google Patents
A kind of PCD combination cutter Download PDFInfo
- Publication number
- CN209139984U CN209139984U CN201821454039.0U CN201821454039U CN209139984U CN 209139984 U CN209139984 U CN 209139984U CN 201821454039 U CN201821454039 U CN 201821454039U CN 209139984 U CN209139984 U CN 209139984U
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- cutting edge
- pcd
- clearance surface
- shank
- utility
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Abstract
The utility model discloses a kind of PCD combination cutters, when using the main-shaft torque lathe small with rigidity greater than the hole of 20mm to solve reamer processing aperture, hole wall after shake line occur and shaking knife and process blacks, the technical problems such as shrinkage cavity, including shank and with the cutter hub that is fixed in shank one end, the shank other end is provided with chamfering, the left side of the cutter hub is provided with flat cutter body, it is centrosymmetric on the cutter hub and is provided at least one of chip space, the chip space includes clearance surface one and clearance surface two, cutting edge one and cutting edge two have been set gradually from left to right on the clearance surface one, the cutting edge one and cutting edge are second is that margin width is 0.02mm to 0.1mm Circular Nose Cutting Edge, the cutting edge one and two land back taper of cutting edge are 0.2 ° to 0.8 °, the clearance surface two be curved surface and with row Bits face one is vertical.The utility model reduces appearance of the PCD reamer to the requirement to prevent shake line, shake knife of machine tool chief axis torque and rigidity by the margin width and land back draught that change PCD reamer.
Description
Technical field
A kind of a kind of process tool technical field of the utility model, and in particular to PCD combination cutter.
Background technique
Diamond cutter has the characteristics such as hardness is high, compression strength is high, thermal conductivity and wearability are good, can be in high-speed cutting
Obtain very high machining accuracy and processing efficiency.The above-mentioned characteristic of diamond cutter is determined by diamond crystal state,
In diamond crystal, four valence electrons of carbon atom press tetrahedral structure bonding, and each carbon atom is formed with four adjacent atoms
Covalent bond, and then diamond lattic structure is formed, the binding force and directionality of the structure are very strong, so that it is high hard to have diamond
Degree.The structure of polycrystalline diamond (PCD) is the different fine-particle diamond sintered body of orientation, since PCD sintered body is shown as respectively
To the same sex, therefore it is not easy along single cleavage facial cleft.
The hardness of PCD cutter is 80~120 times of hard alloy up to 8000HV, and the thermal coefficient of PCD is 700W/mK,
It is 1.5~9 times of hard alloy, even higher than PCBN and copper, therefore PCD cutter heat transfer is rapid, the friction system of PCD reamer
Number is typically only 0.1~0.3 (coefficient of friction of hard alloy is 0.4~1), therefore PCD cutter is significantly reduced cutting force,
The thermal expansion coefficient of PCD is only 0.9 × 10-6~1.18 × 10-6, just correspond to the 1/5 of hard alloy, therefore PCD cutter thermal change
Shape is small, and machining accuracy is high, the affinity very little between PCD cutter and non-ferrous metal and nonmetallic materials, chip in process
It is not easy to be bonded on point of a knife and forms built-up edge.
Reamer is one of aperture knife tool common in machining, the hole on ream workpiece after the processing of drilling,
The machining accuracy for improving hole, reduces the roughness on surface, is the finishing for hole and semi-finished tool, existing reamer
Structure be largely made of shank and cutter hub, can be manually operated or be mounted on drilling machine and work, PCD reamer adds in aluminium alloy
Work field is very common, and in the part of 20mm to 30mm, reamer margin width is usually set in the reamer processing aperture of the prior art
It is set to 0.2mm to 0.3mm, processes aperture in the part of 30mm to 50mm, reamer margin width 0.35mm to 0.5mm, and hold
Easily lead to hole wall black, shrinkage cavity and hair shake phenomenon, and PCD reamer processing hole aperture be greater than 20mm when, with processing hole aperture
Increase, PCD reamer processing aluminum alloy part resistance be also gradually increased, the bigger main-shaft torque rigid requirements to lathe of resistance
It is higher, when main-shaft torque and rigid small lathe selection PCD reamer processing aperture are greater than the hole of 20mm, it may appear that shake line and shake knife
Etc. technical problems, to solve the above problems, the utility model designs a kind of PCD combination cutter.
Utility model content
The purpose of this utility model is that: main-shaft torque and rigidity are used to solve hole of the reamer processing aperture greater than 20mm
When small lathe, it may appear that the technical problems such as shake line and hole wall nigrescences, shrinkage cavity after shaking knife and processing, the utility model offer one
Kind PCD combination cutter.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of PCD combination cutter, including shank and with the cutter hub that is fixed in shank one end, the shank far from cutter hub one
End is provided with chamfering c1, and the left side of the cutter hub is provided with flat cutter body, is centrosymmetric on the cutter hub and is provided at least one
Road chip space, the chip space include clearance surface one and clearance surface two, have been set gradually from left to right and have cut on the clearance surface one
Sword one and cutting edge two are cut, the cutting edge one and cutting edge two are Circular Nose Cutting Edge, two margin width of the cutting edge one and cutting edge
Degree is 0.02mm to 0.1mm, and the cutting edge one includes cutting face one, cutting face two and cutting face three, the cutting face one
Angle with center line is 45 °, and the cutting edge two includes cutting face four and cutting face five, the cutting face three and cutting face four
Land back taper c2 be 0.2 ° to 0.8 °, the angle c3 of the cutting face four and center line is 30 °.
Further, the chip space has twice.
Further, the chamfering c1 is 20 °.
Further, the diameter of the shank is 20mm, and the grade of tolerance is IT6 grades.
Further, the tactical diameter D1 of the cutting edge one is 34mm, and tolerance is ± 0.002mm.
Further, the tactical diameter D2 of the cutting edge two is 35.5mm, and tolerance is ± 0.05mm.
Further, the clearance surface two is curved surface and vertical with clearance surface one
When utility model works: PCD combination cutter being mounted on lathe first, by aluminum alloy part to be processed
It is fixed on lathe accordingly, the position of aluminum alloy part to be processed and being oppositely arranged for PCD combination cutter, Circular Nose Cutting Edge band squeezes
The hole wall of aluminum alloy part to be processed guarantees the roughness of hole wall and the diameter in hole, if the wide hole wall surface of margin width squeezes
Pressure is serious, increases processing resistance, leads to occur shake knife phenomenon in processing, and the hole wall after processing will appear nigrescence, shrinkage cavity
The phenomenon that, margin width is set 0.02mm-0.1mm by the utility model, it is ensured that and it is not in shake knife phenomenon in processing,
The phenomenon that nigrescence and shrinkage cavity will not occur in hole wall after simultaneous processing, and land back taper controls contact surface when reamer squeezes hole wall
Product, acting on simultaneously with Circular Nose Cutting Edge band ensures that the roughness of hole wall and the diameter in hole, the utility model set land back taper to
0.2 ° to 0.8 °, acting on simultaneously with margin width ensures to be not in hole wall nigrescence, shrinkage cavity, shake knife phenomenon in processing.
The beneficial effects of the utility model are as follows:
1, reamer is cut the utility model in silumin part of the processing aperture greater than 20mm compared with the existing technology
Resistance is smaller, and high accurate hole may be implemented in reamer selection main-shaft torque and rigid weaker lathe compared with the existing technology
Diameter processing, reduces processing cost.
2, the utility model back taper is set as 0.2 ° to 0.8 °, when processing aperture greater than 20mm silumin part,
Reamer is suitble to high revolution to process compared with the existing technology, and processing efficiency is higher.
3, the utility model circular arc margin width is set as 0.02mm to 0.1mm, and back taper is set as 0.2 ° to 0.8 °, is adding
When work aperture is greater than 20mm silumin part, reamer is not in that hole wall blacks, shrinkage cavity and hair are shaken compared with the existing technology
Phenomenon.
Detailed description of the invention
Fig. 1 is a kind of PCD combination cutter perspective view of the utility model；
Fig. 2 is a kind of PCD combination cutter structural schematic diagram of the utility model；
Fig. 3 is the utility model part B enlarged drawing；
Fig. 4 is the utility model left view；
Fig. 5 is the utility model part A enlarged drawing；
Appended drawing reference: 1- shank, 2- cutter hub, 3- cutting edge one, the cutting face 3-1- one, the cutting face 3-2- two, 3-3- cutting
Face three, 4- cutting edge two, the cutting face 4-1- four, the cutting face 4-2- five, 5- flat cutter body, 6- chip space, 6-1- clearance surface one, 6-2-
Clearance surface two.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In addition, term " the
One ", " second " etc. is only used for distinguishing description, is not understood to indicate or imply relative importance.
In the description of the utility model embodiment, it should be noted that the instructions such as term "inner", "outside", "upper"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings or when utility model product use usually puts
The orientation or positional relationship put, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
Embodiment 1
As shown in Figs. 1-5, a kind of PCD combination cutter of the present embodiment, including shank and with the cutter hub that is fixed in shank one end,
The shank is provided with chamfering c1 far from one end of cutter hub, and the left side of the cutter hub is provided with flat cutter body, is on the cutter hub
Center symmetric setting has at least one of chip space, and the chip space includes clearance surface one and clearance surface two, on the clearance surface one
It is set gradually from left to right cutting edge one and cutting edge two, the cutting edge one and cutting edge two are Circular Nose Cutting Edge, the cutting
Sword one and two margin width of cutting edge are 0.02mm to 0.1mm, and the cutting edge one includes cutting face one, cutting face two and cuts
Bevel three, the cutting face one and the angle of center line are 45 °, and the cutting edge two includes cutting face four and cutting face five, institute
The land back taper c2 for stating cutting face three and cutting face four is 0.2 ° to 0.8 °, and the cutting face four and the angle c3 of center line are
30 °, the clearance surface two is curved surface and vertical with clearance surface one.
PCD combination cutter is mounted on lathe first in the present embodiment, aluminum alloy part to be processed is also corresponding
It is fixed on lathe, the position of aluminum alloy part to be processed and being oppositely arranged for PCD combination cutter, Circular Nose Cutting Edge band squeezes to be processed
Aluminum alloy part hole wall, guarantee the roughness of hole wall and the diameter in hole, if the wide hole wall surface of margin width squeeze it is serious,
Make to process resistance and increase, lead to occur shake knife phenomenon in processing, and hole wall the phenomenon that will appear nigrescence, shrinkage cavity after processing,
Margin width is set 0.02mm-0.1mm by the utility model, it is ensured that is not in shake knife phenomenon when processing, adds simultaneously
The phenomenon that nigrescence and shrinkage cavity will not occur in hole wall after work, and land back taper controls contact area when reamer squeezes hole wall, with
Circular Nose Cutting Edge band acts on simultaneously ensures that the roughness of hole wall and the diameter in hole, the utility model set 0.2 ° extremely for land back taper
0.8 °, acting on simultaneously with margin width ensures to be not in hole wall nigrescence, shrinkage cavity, shake knife phenomenon in processing.
The chip space has twice.
The chamfering c1 is 20 °.
The diameter of the shank is 20mm, and the grade of tolerance is IT6 grades.
The tactical diameter D1 of the cutting edge one is 34mm, and tolerance is ± 0.002mm.
The tactical diameter D2 of the cutting edge two is 35.5mm, and tolerance is ± 0.05mm.
The utility model passes through the margin width of the cutting edge one and cutting edge two that will be used to squeeze parts to be processed hole wall
It is set as 0.02mm to 0.1mm, while the land back taper for controlling the contact area for squeezing hole wall is set as 0.2 ° to 0.8 °, makes this
Reamer in processing aperture is greater than the silumin of 20mm to a kind of PCD combination cutter described in utility model compared with the existing technology
When part, cutting resistance is smaller, and reamer selection main-shaft torque and the weaker lathe of rigidity can be with compared with the existing technology
It realizes the processing of high-precision aperture, reduces processing cost, set 0.2 ° to 0.8 ° for back taper, be greater than 20mm high in processing aperture
When silico-aluminum part, reamer compared with the existing technology is suitble to high revolution to process, and processing efficiency is improved, by circular arc margin width
Degree is set as 0.02mm to 0.1mm, and back taper is set as 0.2 ° to 0.8 °, is greater than 20mm silumin part in processing aperture
When, reamer is not in that hole wall blacks, phenomenon is shaken in shrinkage cavity and hair compared with the existing technology.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (7)
1. a kind of PCD combination cutter, including shank (1) and with the cutter hub (2) that is fixed in shank (1) left end, which is characterized in that institute
It states shank (1) and the one end of cutter hub (2) is provided with chamfering c1, the left side of the cutter hub (2) is provided with flat cutter body (5), institute
State to be centrosymmetric on cutter hub (2) and be provided at least one of chip space (6), the chip space (6) include clearance surface one (6-1) with
Clearance surface two (6-2) has been set gradually from left to right cutting edge one (3) and cutting edge two (4) on the clearance surface one (6-1),
The cutting edge one (3) and cutting edge two (4) are Circular Nose Cutting Edge, and the cutting edge one (3) and cutting edge two (4) margin width d1 are equal
For 0.02mm to 0.1mm, the cutting edge one (3) includes cutting face one (3-1), cutting face two (3-2) and three (3- of cutting face
3), the angle of the cutting face one (3-1) and center line is 45 °, and the cutting edge two (4) includes cutting face four (4-1) and cuts
Bevel five (4-2), the cutting edge one (3) and cutting edge two (4) land back taper c3 are 0.2 ° to 0.8 °, the cutting face four
The angle c4 of (4-1) and center line is 30 °.
2. a kind of PCD combination cutter according to claim 1, which is characterized in that the chip space (6) has twice.
3. a kind of PCD combination cutter according to claim 1, which is characterized in that the chamfering c1 is 20 °.
4. a kind of PCD combination cutter according to claim 1, which is characterized in that the diameter of the shank (1) is 20mm,
The grade of tolerance is IT6 grades.
5. a kind of PCD combination cutter according to claim 1, which is characterized in that the tactical diameter of the cutting edge one (3)
D1 is 34mm, and tolerance is ± 0.002mm.
6. a kind of PCD combination cutter according to claim 1, which is characterized in that the tactical diameter of the cutting edge two (4)
D2 is 35.5mm, and tolerance is ± 0.05mm.
7. a kind of PCD combination cutter according to claim 1, which is characterized in that the clearance surface two (6-2) be curved surface and
It is vertical with clearance surface one (6-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454039.0U CN209139984U (en) | 2018-09-06 | 2018-09-06 | A kind of PCD combination cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454039.0U CN209139984U (en) | 2018-09-06 | 2018-09-06 | A kind of PCD combination cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209139984U true CN209139984U (en) | 2019-07-23 |
Family
ID=67265210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821454039.0U Expired - Fee Related CN209139984U (en) | 2018-09-06 | 2018-09-06 | A kind of PCD combination cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209139984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458463A (en) * | 2021-07-15 | 2021-10-01 | 江门市中刀精密科技有限公司 | Combined type multi-blade PCD reamer for processing automobile engine cylinder hole |
| CN115041752A (en) * | 2022-04-01 | 2022-09-13 | 上海新山田精密刀具有限公司 | Anti-chip removal reamer |
-
2018
- 2018-09-06 CN CN201821454039.0U patent/CN209139984U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458463A (en) * | 2021-07-15 | 2021-10-01 | 江门市中刀精密科技有限公司 | Combined type multi-blade PCD reamer for processing automobile engine cylinder hole |
| CN115041752A (en) * | 2022-04-01 | 2022-09-13 | 上海新山田精密刀具有限公司 | Anti-chip removal reamer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 Termination date: 20210906 |