CN207086997U - One kind is used for the flat cutter of blind hole - Google Patents
One kind is used for the flat cutter of blind hole Download PDFInfo
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- CN207086997U CN207086997U CN201720497465.1U CN201720497465U CN207086997U CN 207086997 U CN207086997 U CN 207086997U CN 201720497465 U CN201720497465 U CN 201720497465U CN 207086997 U CN207086997 U CN 207086997U
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- blade
- blind hole
- cutter
- hole
- cutting edge
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Abstract
One kind is used for the flat cutter of blind hole, including knife bar, cutter head and the blade on cutter head, it is characterised in that：The cutting edge of the blade is in smooth straight line, and its levelness is within 0.02mm.By the cutting edge of two blades on cutter, it is designed as the straight line that height error is no more than 0.02mm, when to requiring that higher blind hole is flat, can a direct knife mill out, to reach the effect of optimization processing route, also can be by being rotated to the off-centre operation of main shaft, to complete to require the processing that higher blind hole is flat on machine tool.The utility model is simple and reasonable, and the processing flat to blind hole can ensure bottom hole 0.02mm planarity requirements, while also reduce the dependence to numerical control device, reduce the cost of equipment investment.
Description
Technical field
It the utility model is related to a kind of cutter, and in particular to a kind of flat-bottomed cutter of the milling blind hole bottom surface on non-Digit Control Machine Tool
Tool.
Background technology
For the processing that planarity requirements 0.02mm blind holes are flat, traditional processing technology is usually using slotting cutter or machine
Folder cutter is completed in several millings or machining center.But the cutting edge of two blades of conventional mechanical clamped cutting tool, as shown in Fig. 6,
The cutting edge of two blades 30 is not complete straight flat, but both sides are high, and centre is lower slightly, adds man-hour requirement by program to cover one whole
After circle, then a knife is laterally walked, centre is had into a salient point milling more slightly higher than on side and put down.And can not on non-numerical control device
Reach processing request.
Through looking into, existing Patent No. CN201020265852.0 Chinese patent《One kind is flat blind for drilling minor diameter
The process tool in hole》, including cutting head and knife bar two parts composition, the knife bar use common steel member, knife bar end is welded
Cutting head, the cutting head use metal cutting tool material members, are the bigger frustum of a cone of tip diameter, and end face sets four
Symmetrical cutting edge, the anterior angle of the cutting edge is 5 °~8 °, and relief angle is 10 °~12 °, the circular cone corresponding with every cutting edge
The platform face of cylinder respectively opens up a U-lag.The cutter can meet the process requirements of the flat blind hole of minor diameter, but its cutting edge is
Symmetrical is in four of crossing distribution, and the convex of out-of-flatness can be also left at the middle part of blind hole after being cut so on machine tool
Point, it is impossible to be used in the processing of the high blind hole of flatness requirement.
The content of the invention
Technical problem to be solved in the utility model be for the above-mentioned state of the art and provide it is a kind of simple in construction plus
Work flatness it is good be used for the flat cutter of blind hole, can be processed on non-Digit Control Machine Tool.
Technical scheme is used by the utility model solves above-mentioned technical problem：One kind is used for the flat cutter of blind hole, wraps
Include knife bar, cutter head and the blade on cutter head, it is characterised in that：The cutting edge of the blade is in smooth straight line, its
Levelness is within 0.02mm；
The front end face of the cutter head is arranged with central pit hole, and blade is two of left and right setting, front end of cutter head or so two
Side is arranged with the die cavity for blade installation respectively, and two blades are vertically installed in die cavity, when cutter is along main axis, two
Blade relative main rotates in off-centre operation.
The die cavity is symmetrical arranged relative to central pit hole, and blade assumes diamond in shape, and the middle part of blade is provided with mounting hole, die cavity
Vertical inner wall face is provided with blade positioning hole, and blade is fixed in die cavity vertically by screw, and the cutting edge of blade is horizontal upwards
Stretch out in outside die cavity.
Improve again, the die cavity is considered to be worth doing come milling using NC dividing head clamping and is molded.
Improve again, the distance between outer end of cutting edge of two blades, each blade consistent with the aperture of blind hole
Cutting edge length be more than blind hole aperture half.
Further improve, the length of the cutting edge of the blade is the 1/2~3/5 of blind hole aperture.
Finally, the back-end central position of the knife bar is arranged with connecting hole.
Compared with prior art, the utility model has the advantage of：By the cutting edge of two blades on cutter, it is designed as
Height error be no more than 0.02mm straight line, when to requiring that higher blind hole is flat, can a direct knife mill out, to reach
Optimize the effect of processing route, also can be by being rotated to the off-centre operation of main shaft, to complete to require higher blind hole on machine tool
Flat processing.The utility model is simple and reasonable, and the processing flat to blind hole can ensure that bottom hole 0.02mm flatness will
Ask, while also reduce the dependence to numerical control device, can be processed on non-Digit Control Machine Tool, substantially reduce the cost of equipment investment.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the utility model embodiment；
Fig. 2 is Fig. 1 front view；
Fig. 3 is the side view of the utility model embodiment；
Fig. 4 is that Fig. 3 installs the structural representation after blade；
Fig. 5 is the fundamental diagram of the utility model annular cutting；
Fig. 6 is the structural representation of cutter before improving.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Fig. 1~5, one kind is used for the flat cutter of blind hole, including knife bar 1, cutter head 2 and on cutter head 2
Blade 3, the back-end central position of knife bar 1 are arranged with connecting hole 11, and knife bar 1 is connected by connecting hole with rotating spindle, cutter head 2
Front end face be arranged with the central pit hole 21 coaxial with connecting hole 11, set for left and right two of blade 3, the front end of cutter head 1 is left
Right two sides are arranged with the die cavity 22 installed for blade 3 respectively, and die cavity 22 is to consider to be worth doing to be molded come milling using NC dividing head clamping, type
Chamber 22 is symmetrical arranged relative to central pit hole 21, and blade 3 assumes diamond in shape, and the middle part of blade 3 is provided with mounting hole, die cavity 22 it is vertical in
Wall is provided with blade positioning hole 221, and blade 3 is fixed in die cavity 22 by the way that screw 4 is vertically-mounted, the cutting of two blades 3
Sword protrudes horizontally up in outside die cavity 22 upwards, and cutting edge is in smooth straight line, and its levelness is within 0.02mm, after installation, two
The distance between outer end of cutting edge of blade 3 is consistent with blind hole aperture D, and the length d of the cutting edge of each blade 3 is more than blind hole
The 1/2~3/5 of aperture D half, generally blind hole aperture D, blind hole aperture D is 35mm in the present embodiment, the cutting edge of blade 3
Length d be 20mm, so when cutter is along main axis, two relative mains of blade 3 in off-centre operation rotate, as shown in figure 5,
Blade 3, although cutter is formed centrally within a range of intersection A, can be cut when being cut around annular by the blade 3 of cutter two
Bits, the flatness of cutting edge itself can be smooth by intersection A millings bits.
The fabrication processing of the cutter of the present embodiment is as follows：
Rough turn-quenched-half smart car-milling facet-peripheral milling-machining center be (upper NC dividing head milling dress blade
Die cavity)-bore tapping-number smart car-bath nitriding.
Play key process to this cutter as " machining center (upper NC dividing head milling fills the die cavity of blade) ",
In the processing of this process, it is necessary to NC dividing head clamping need to be used, come the two types cavity of milling bits dress blade, after ensureing that blade is loaded onto, two knives
The levelness of the cutting edge of piece is within 0.02mm.
So, after ensure that cutter loads onto blade by accurately processing technology, after the levelness of cutting edge, cutter is
The flat processing of blind hole can be completed, to ensure bottom hole 0.02mm planarity requirements.
The present embodiment also can be by rotating, to complete to require that higher blind hole is flat on machine tool to the off-centre operation of main shaft
Processing, also reduce the dependence to numerical control device, reduce the cost of equipment investment.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as the scope of protection of the utility model.
Claims (6)
1. one kind is used for the flat cutter of blind hole, including knife bar, cutter head and the blade on cutter head, it is characterised in that：Institute
The cutting edge for stating blade is in smooth straight line, and its levelness is within 0.02mm；
The front end face of the cutter head is arranged with central pit hole, and blade is two of left and right setting, the side of front end of cutter head or so two point
The die cavity for blade installation is not arranged with, two blades are vertically installed in die cavity, when cutter is along main axis, two blades
Relative main rotates in off-centre operation.
2. according to claim 1 be used for the flat cutter of blind hole, it is characterised in that：The die cavity is relative to central pit hole pair
Claim to set, blade assumes diamond in shape, and the middle part of blade is provided with mounting hole, and the vertical inner wall face of die cavity is provided with blade positioning hole, blade
It is fixed on vertically in die cavity by screw, the cutting edge of blade protrudes horizontally up in outside die cavity upwards.
3. according to claim 2 be used for the flat cutter of blind hole, it is characterised in that：The die cavity is to use NC dividing head
Clamping carrys out milling bits shaping.
4. it is used for the flat cutter of blind hole according to claims 1 to 3 any claim, it is characterised in that：Described two
The distance between outer end of cutting edge of blade is consistent with the aperture of blind hole, and the length of the cutting edge of each blade is more than hole
The half in footpath.
5. according to claim 4 be used for the flat cutter of blind hole, it is characterised in that：The length of the cutting edge of the blade is
The 1/2~3/5 of blind hole aperture.
6. it is used for the flat cutter of blind hole according to claims 1 to 3 any claim, it is characterised in that：The knife bar
Back-end central position be arranged with connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720497465.1U CN207086997U (en) | 2017-05-05 | 2017-05-05 | One kind is used for the flat cutter of blind hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720497465.1U CN207086997U (en) | 2017-05-05 | 2017-05-05 | One kind is used for the flat cutter of blind hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207086997U true CN207086997U (en) | 2018-03-13 |
Family
ID=61547074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720497465.1U Active CN207086997U (en) | 2017-05-05 | 2017-05-05 | One kind is used for the flat cutter of blind hole |
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| Country | Link |
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| CN (1) | CN207086997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590694A (en) * | 2019-01-25 | 2019-04-09 | 江苏迈信林航空科技股份有限公司 | The processing method of deep blind hole |
-
2017
- 2017-05-05 CN CN201720497465.1U patent/CN207086997U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590694A (en) * | 2019-01-25 | 2019-04-09 | 江苏迈信林航空科技股份有限公司 | The processing method of deep blind hole |
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