CN1031046C - Method for making gang drill - Google Patents
Method for making gang drill Download PDFInfo
- Publication number
- CN1031046C CN1031046C CN 90107708 CN90107708A CN1031046C CN 1031046 C CN1031046 C CN 1031046C CN 90107708 CN90107708 CN 90107708 CN 90107708 A CN90107708 A CN 90107708A CN 1031046 C CN1031046 C CN 1031046C
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- tool
- knife face
- drill
- electrode
- processing
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- Expired - Fee Related
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- Drilling Tools (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The present invention discloses a method for processing gang drills by an electric spark machine tool, which solves the problem that the processing manufacture of gang drills is difficult, and the quality is difficult to ensure. The present invention utilizes a forming turning tool to manufacture a tool electrode, and can singly or batch process various gang drills on an electric spark forming machine tool. The processing efficiency is high, and the quality has consistency. The hardness of the back tool surface of a processed gang drill is enhanced, and the surface has thin dents which are favorable to the cooling and the lubrication in the process of cutting processing. The endurance of a drill bit is obviously enhanced.
Description
The present invention relates to a kind of method of processing cutting tool, particularly a kind of method of spark machined drilling cutting blade.
Ni Zhifu drill is the fairly perfect advanced drill bit of a kind of reconditioning of China's original creation.The problem that it exists in machining at the standard fluted drill, according to different processing objects, to the cutting tip of drill bit in addition reconditioning improve, make the geometric parameter of drill bit more reasonable.Thereby reduced cutting force widely, reduced cutting temperature, significantly improved the durability of drill bit, also significantly improved production efficiency.And all be greatly improved aspect crudy, smear metal formation and the chip removal, so once once widelyd popularize at home.But Ni Zhifu drill shape face complexity, geometric parameter is various, the workman is difficult for grasping during making, simultaneously owing to the symmetry of two cutting edges of Ni Zhifu drill is had relatively high expectations, therefore hand grinding crescent, chip dividing groove, chisel edge etc. are very difficult, not only time-consuming, and difficult quality guarantee, thereby Ni Zhifu drill never is used widely.In order to solve the sharpening problem of Ni Zhifu drill, there are many people's imaginations to carry out the sharpening of Ni Zhifu drill with anchor clamps or lathe both at home and abroad, but all various in style, shape face complexity because of the Ni Zhifu drill specification, to emery wheel correction many reasons such as have relatively high expectations, be difficult to find a kind of economical and practical machine-tooled method.
The objective of the invention is to solve the Ni Zhifu drill processing difficulties, be beneficial to it and popularize use in an all-round way.
Above-mentioned purpose of the present invention is achieved through the following technical solutions: a kind of processing method of Ni Zhifu drill cutting edge the steps include:
A. make the tool-electrode 1 that electric spark machine tool is used with formed turning tool 2 cars of making by the Ni Zhifu drill cutting edge;
B. process corresponding cutting blade with the cutting blade partial discharge to drill bit on spark-erosion machine tool of above-mentioned tool-electrode 1; It is knife face 7 behind the back knife face, outside of back knife face, the cutter bits groove 6 of front and rear knife face, the crescent circular arc sword 4 of chisel edge 8;
C. more described drill bit is taken off the back knife face of back with emery wheel web thinning 8.
The present invention is described in further detail below in conjunction with accompanying drawing:
Figure one (a) is the side schematic view of tool-electrode, and n is the rotating speed that rotatablely moves of tool-electrode, (b) is the formed turning tool schematic diagram, and vf is the feed speed of formed turning tool.
Figure two (a) is the schematic diagram of Ni Zhifu drill side, and wherein α is that relief angle γ τ is the chisel edge anterior angle, (b) is the Ni Zhifu drill vertical view.
At first, structure and geometric parameter according to Ni Zhifu drill, calculate behind the Ni Zhifu drill knife face and be the intersection on the face of cylinder of axis with the auger spindle, with this intersection during as car system tool-electrode 1, relative movement orbit between formed turning tool 2 and the tool-electrode 1, even formed turning tool 2 is adding man-hour, cutting edge is exactly the back knife face of Ni Zhifu drill to be processed and the rake face of chisel edge 8 with respect to the shape face that tool-electrode 1 produces.Car is made and need only be made axial feed and just can process Ni Zhifu drill two cutting edge tool-electrodes 1 simultaneously in this way,
Secondly, the tool-electrode made from car 1 process the back knife face 7 of front and rear knife face, chip dividing groove 6, crescent circular arc sword 4 and the outside of the chisel edge 8 of Ni Zhifu drill on EDM shaping machine, then with the chisel edge 8 afterwards knife face a little reconditionings of emery wheel to the apex point place., regular shape good with the Ni Zhifu drill cutting edge symmetry after the moulding of the present invention, cutting edge is sharp, geometric parameter is accurate, and quality has uniformity preferably.Not only reach Ni Zhifu drill each technical indicator of sharpening by hand fully, and the anterior angle that makes the chisel edge place changes-2 °～-5 ° into by-10 ° of original hand grinding, the chip dividing groove place by the relief angle of the sidewall 5 in axle center also by the negative value of original hand grinding become+3 °～+ 5 °, make geometric parameter more reasonable.
The present invention is drilled to low with the edm forming processing group, the hardness of knife face is HRC59～61 height of HRC64～66 than grinding behind the Ni Zhifu drill that working (machining) efficiency height and processing obtain.The favourable cutting fluid of the numerous slight dimple that stays on the finished surface stores, and has strengthened cooling and the lubrication in the working angles, thereby can make durability improve 2～3 times.
The present invention can not only be used for the single making and the batch process of the Ni Zhifu drill of all types of descriptions, can also be used for the sharpening and the making of other types drill bit, and provides the basis for production coating Ni Zhifu drill etc.
Claims (1)
1, a kind of processing method of Ni Zhifu drill cutting edge is characterized by and includes the following step:
A. make the tool-electrode (1) that electric spark machine tool is used with formed turning tool (2) car of making by the Ni Zhifu drill cutting edge;
B. use above-mentioned tool-electrode (1) cutting blade partial discharge to drill bit on spark-erosion machine tool to process corresponding cutting blade; It is knife face (7) behind the back knife face, outside of back knife face, the cutter bits grooves (6) of front and rear knife face, the crescent circular arc sword (4) of chisel edge (8);
C. more described drill bit is taken off the back knife face of back with emery wheel web thinning (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107708 CN1031046C (en) | 1990-09-12 | 1990-09-12 | Method for making gang drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107708 CN1031046C (en) | 1990-09-12 | 1990-09-12 | Method for making gang drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1059860A CN1059860A (en) | 1992-04-01 |
| CN1031046C true CN1031046C (en) | 1996-02-21 |
Family
ID=4880676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90107708 Expired - Fee Related CN1031046C (en) | 1990-09-12 | 1990-09-12 | Method for making gang drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031046C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152090B (en) * | 2011-03-11 | 2012-08-01 | 新野鼎泰电子精工科技有限公司 | PCB (printed circuit board) micro-drill bit cold-inserting technique |
| CN104416197A (en) * | 2013-09-09 | 2015-03-18 | 天工爱和特钢有限公司 | Ellipsoidal drill bit |
| CN106583800A (en) * | 2015-10-20 | 2017-04-26 | 扬州市实力五金工具工贸有限公司 | Stepped drill with masses drill opening and manufacturing method of stepped drill |
| CN105345181B (en) * | 2015-11-23 | 2018-06-29 | 陕西理工学院 | Knife face insertion packing wire cutting building mortion after fluted drill |
-
1990
- 1990-09-12 CN CN 90107708 patent/CN1031046C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059860A (en) | 1992-04-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |