CN202461617U - Polycrystalline diamond center drill - Google Patents
Polycrystalline diamond center drill Download PDFInfo
- Publication number
- CN202461617U CN202461617U CN2012200624641U CN201220062464U CN202461617U CN 202461617 U CN202461617 U CN 202461617U CN 2012200624641 U CN2012200624641 U CN 2012200624641U CN 201220062464 U CN201220062464 U CN 201220062464U CN 202461617 U CN202461617 U CN 202461617U
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- wall
- groove
- polycrystalline diamond
- blade
- cone
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 51
- 239000010432 diamond Substances 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 15
- 238000003754 machining Methods 0.000 abstract description 13
- 238000010892 electric spark Methods 0.000 abstract description 3
- 210000001113 umbilicus Anatomy 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a polycrystalline diamond center drill. The polycrystalline diamond center drill comprises a round rod made of hard alloys, wherein one end of the round rod is a circular cone body; a chip removal groove is formed at a position where the circular cone body extends from an end head to the cylindrical surface of the round rod toward the inside and is formed by two-sided groove walls; the first groove wall is set to be a plane; the second groove wall is set to be an arc surface; the first groove wall is integrally connected with the second groove wall; a blade groove is also formed at the first groove wall and is formed by two-sided groove walls; the first knife groove wall is set to the plane; the second knife groove wall is set to be the arc surface; the first knife groove wall is vertically connected with the second knife groove wall, integrally; the first knife groove wall of the blade groove is parallel to the first groove wall of the chip removal groove; and a polycrystalline diamond blade is fixedly connected into the blade groove. By the structure, compared with the center hole machined by electric spark, the center hole which is needed during the machining of appearance of a hard alloy rod-shaped cutter is machined by the center drill has the characteristics of high machining efficiency, high machining accuracy, time saving and power saving.
Description
Technical Field
The utility model relates to a cutter field of making of machining trade especially relates to a polycrystalline diamond center bores, can be used for processing the shaft-like cutter of carbide and add required centre bore man-hour at the appearance.
Background
The hard alloy rod-shaped cutter needs to be provided with a central hole during the shape processing, the hardness of the hard alloy material is generally HV 2000, and the hard alloy material is generally processed by a grinding method. The traditional machining mode of the center hole has two types:
one is welding steel material (called as a process navel) at two ends of a hard alloy cutter bar, and using a hole on the process navel as a central hole. The structure has the following defects in the manufacturing process: the processing procedures are increased and complicated, which causes a lot of difficulties in processing and increases the processing cost; in the working procedure, the process navel is welded on the alloy rod, so that the alloy rod is easily over-burnt and scrapped; even if the processing and welding procedures of the process umbilicus can be smoothly completed, the subsequent outer circle fine grinding can also cause inaccurate size due to the problems of strength and the like of the process umbilicus; after the whole excircle is processed, the process umbilicus is also needed to be detached. The phenomenon of overburning of the prior alloy bar can still occur in the process of disassembling the process navel.
Another method is to use electric spark to punch holes on the alloy rod, and then use a diamond-coated grinding rod (120 degrees) to grind to the size required by the processing so as to form the central hole. The structure has the following defects in the manufacturing process: diamond coated grinding rods are very expensive; the diamond-plated grinding rod with high quality is difficult to buy in the market, so the processing quality of the alloy rod is difficult to ensure, and meanwhile, the diamond-plated grinding rod is very seriously abraded; the accurate angle of 120 degrees is difficult to ensure, the subsequent processing is difficult, and the rejection rate is high.
Disclosure of utility model patent
An object of the utility model is to overcome prior art not enough, provide a polycrystalline diamond center bores, can utilize this polycrystalline diamond center to bore and process the shaft-like cutter of carbide and add the required centre bore man-hour in the appearance, compare in the spark-erosion machining centre bore, have machining efficiency height, machining precision height, the characteristics of save time, power saving.
The utility model provides a technical scheme that its technical problem adopted is: a polycrystalline diamond center drill comprises a round rod made of hard alloy; the end part of one end of the round rod is set as a cone; a chip groove is formed in one end of the cone from the end head to the inner side and extends to the cylindrical surface of the round rod; the chip groove is composed of two groove walls, wherein the first groove wall is a plane, the second groove wall is an arc-shaped surface, and the first groove wall and the second groove wall are integrally connected; the first slot wall is also provided with an insert slot which is also composed of two slot walls, wherein the first slot wall is a plane, the second slot wall is an arc-shaped surface, and the first slot wall and the second slot wall are vertically connected into a whole; the first blade groove wall of the blade groove is parallel to the first groove wall of the chip groove; polycrystalline diamond blades are fixedly connected in the blade grooves.
The second groove wall is composed of a first straight wall arranged on the outer section and a first arc-shaped wall arranged on the inner section, the first straight wall is arranged outside the central plane of the cone and enables the chip groove to contain a part of the central plane, the distance between the first straight wall and the central plane is 0.2 mm, and the length of the first straight wall is 2 mm.
The arc size of the first arc-shaped surface wall of the second groove wall is R15.
The second cutter groove wall is composed of a second straight surface wall arranged at the outer section and a second arc surface wall arranged at the inner section, the second straight surface wall is arranged outside the central plane of the cone and enables the blade groove to contain one part of the central plane, the distance between the second straight surface wall and the central plane is 0.2 mm, and the length of the second straight surface wall is 1 mm.
The arc size of the second arc-shaped surface wall of the second cutter groove wall is R5.
In the cone, the included angle between the generatrix of the cone and the central line of the cone is 30 degrees.
The bottom surface of the polycrystalline diamond blade is fixed with the wall of the first cutter groove, the side surface of the inner end of the polycrystalline diamond blade is fixed with the wall of the second cutter groove, and the top surface of the polycrystalline diamond blade is flush with the wall of the first cutter groove.
The side face of the outer end of the polycrystalline diamond blade protrudes out of the conical surface of the cone.
In the cone, a plurality of pyramid surfaces with different angles are arranged on the conical surface part corresponding to the bottom surface of the diamond blade.
The cylindrical surface of the round rod is also provided with a groove for fixing the round rod.
The utility model relates to a polycrystalline diamond center drill, which is characterized in that the end part of one end of a round rod is designed into a cone; and a chip groove is arranged at one end of the cone from the end head to the inner side and extends to the cylindrical surface of the round rod, a chip body generated during the processing of the central hole can be led out by utilizing the chip groove, a blade groove is arranged on one side of the chip groove, the blade groove is fixedly connected with a polycrystalline diamond blade, and the processing of the central hole is realized by utilizing the cutting of the polycrystalline diamond blade.
The utility model has the advantages that the end part of one end of the circular rod made of hard alloy is designed into a cone; a chip groove is formed in one end of the cone from the end head to the inner side and extends to the cylindrical surface of the round rod; the chip groove is composed of two groove walls, wherein the first groove wall is a plane, the second groove wall is an arc-shaped surface, and the first groove wall and the second groove wall are integrally connected; the first slot wall is also provided with an insert slot which is also composed of two slot walls, wherein the first slot wall is a plane, the second slot wall is an arc-shaped surface, and the first slot wall and the second slot wall are vertically connected into a whole; the first blade groove wall of the blade groove is parallel to the first groove wall of the chip groove; polycrystalline diamond blades are fixedly connected in the blade grooves. The polycrystalline diamond center drill with the structure can be used for machining a center hole required by a hard alloy rod-shaped cutter during shape machining, and has the characteristics of high machining efficiency, high machining precision, time saving and power saving compared with the electric spark machining of the center hole.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment.
Drawings
FIG. 1 is a schematic view of the structure of the first embodiment of the present invention;
FIG. 2 is a front view of the first embodiment of the present invention;
FIG. 3 is a top view of the first embodiment of the present invention;
fig. 4 is a left side view of the first embodiment of the present invention;
FIG. 5 is an enlarged schematic view of section A of FIG. 3;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is a schematic structural view of the second embodiment of the present invention;
FIG. 8 is a front view of the second embodiment of the present invention;
fig. 9 is a plan view of the second embodiment of the present invention.
Detailed Description
In the first embodiment, as shown in fig. 1 to 6, the polycrystalline diamond center drill of the present invention includes a circular rod 1 made of hard alloy; the end part of one end of the round rod is provided with a cone 11; a chip groove 12 is arranged at one end of the cone 11 from the end to the inner side and extends to the cylindrical surface of the round rod; the chip groove 12 is composed of two groove walls, wherein the first groove wall 121 is a plane, the second groove wall 122 is an arc-shaped plane, and the first groove wall 121 and the second groove wall 122 are integrally connected; the first slot wall 121 is further provided with an insert slot 13, the insert slot 13 is also formed by two slot walls, wherein the first slot wall 131 is a plane, the second slot wall 132 is an arc-shaped surface, and the first slot wall 131 and the second slot wall 132 are integrally and vertically connected; the first flute wall 131 of the insert flute 13 is parallel to the first flute wall 121 of the flute; polycrystalline diamond blades 2 are fixedly connected in the blade grooves 13, and the polycrystalline diamond blades 2 have two blades in total.
Wherein,
the second groove wall 122 is composed of a first straight wall 1221 arranged at the outer section and a first circular arc-shaped wall 1222 arranged at the inner section, the first straight wall 1221 is arranged outside the central plane (i.e. the plane where the center line is located) of the cone and enables the chip discharge groove 12 to contain a part of the central plane, the distance between the first straight wall 1221 and the central plane is 0.2 mm, and the length of the first straight wall 1221 is 2 mm;
the arc size of the first arc-shaped surface wall 1222 of the second groove wall is R15;
the second slot wall 132 is composed of a second straight wall 1321 arranged at the outer section and a second circular arc-shaped wall 1322 arranged at the inner section, the second straight wall 1321 is arranged outside the central plane of the cone and enables the insert slot 13 to contain a part of the central plane, the distance between the second straight wall 1321 and the central plane is 0.2 mm, and the length of the second straight wall 1321 is 1 mm;
the arc size of the second arc-shaped surface wall 1322 of the second flute wall is R5;
in the cone 11, the included angle between the generatrix and the central line of the cone is 30 degrees.
The bottom surface of the polycrystalline diamond blade 2 is fixed with the first groove wall 131, the inner end side surface of the polycrystalline diamond blade 2 is fixed with the second groove wall 132, and the top surface of the polycrystalline diamond blade 2 is flush with the first groove wall 121;
the side surface of the outer end of the polycrystalline diamond blade 2 protrudes out of the conical surface of the cone 11;
in the cone 11, a plurality of pyramid surfaces 111 with different angles are arranged on the conical surface part corresponding to the bottom surface of the diamond blade, and the cone has the characteristic of 40-degree single-side deflection.
The utility model relates to a polycrystalline diamond center drill, which is characterized in that the end part of one end of a round rod is designed into a cone 11; and a chip groove 12 is arranged at one end of the cone from the end to the inner side and extends to the cylindrical surface of the round rod, a chip body generated during the processing of the central hole can be guided out by using the chip groove, a blade groove 13 is arranged on one side of the chip groove 12, the blade groove 13 is fixedly connected with the polycrystalline diamond blade 2, and the processing of the central hole is realized by using the cutting of the polycrystalline diamond blade 2.
In the second embodiment, referring to fig. 7 to 12, a difference between the polycrystalline diamond center drill of the present invention and the first embodiment is that the circular rod 1 has two sections to form a step 10, and a groove 4 for fixing the circular rod is further disposed on the cylindrical surface of one of the sections of the circular rod.
The above embodiments are only used to further illustrate the utility model discloses a polycrystalline diamond center drill, but the utility model discloses do not limit to the embodiment, all according to the utility model discloses a technical entity does any simple modification, equivalent change and modification to above embodiment, all fall into the protection scope of the technical scheme of the utility model.
Claims (10)
1. A polycrystalline diamond center drill comprises a round rod made of hard alloy; the end part of one end of the round rod is set as a cone; the method is characterized in that: a chip groove is formed in one end of the cone from the end head to the inner side and extends to the cylindrical surface of the round rod; the chip groove is composed of two groove walls, wherein the first groove wall is a plane, the second groove wall is an arc-shaped surface, and the first groove wall and the second groove wall are integrally connected; the first slot wall is also provided with an insert slot which is also composed of two slot walls, wherein the first slot wall is a plane, the second slot wall is an arc-shaped surface, and the first slot wall and the second slot wall are vertically connected into a whole; the first blade groove wall of the blade groove is parallel to the first groove wall of the chip groove; polycrystalline diamond blades are fixedly connected in the blade grooves.
2. The polycrystalline diamond center drill of claim 1, wherein: the second groove wall is composed of a first straight wall arranged on the outer section and a first arc-shaped wall arranged on the inner section, the first straight wall is arranged outside the central plane of the cone and enables the chip groove to contain a part of the central plane, the distance between the first straight wall and the central plane is 0.2 mm, and the length of the first straight wall is 2 mm.
3. The polycrystalline diamond center drill of claim 2, wherein: the arc size of the first arc-shaped surface wall of the second groove wall is R15.
4. The polycrystalline diamond center drill of claim 1, wherein: the second cutter groove wall is composed of a second straight surface wall arranged at the outer section and a second arc surface wall arranged at the inner section, the second straight surface wall is arranged outside the central plane of the cone and enables the blade groove to contain one part of the central plane, the distance between the second straight surface wall and the central plane is 0.2 mm, and the length of the second straight surface wall is 1 mm.
5. The polycrystalline diamond center drill of claim 4, wherein: the arc size of the second arc-shaped surface wall of the second cutter groove wall is R5.
6. The polycrystalline diamond center drill of claim 1, wherein: in the cone, the included angle between the generatrix of the cone and the central line of the cone is 30 degrees.
7. The polycrystalline diamond center drill of claim 1, wherein: the bottom surface of the polycrystalline diamond blade is fixed with the wall of the first cutter groove, the side surface of the inner end of the polycrystalline diamond blade is fixed with the wall of the second cutter groove, and the top surface of the polycrystalline diamond blade is flush with the wall of the first cutter groove.
8. The polycrystalline diamond center drill of claim 7, wherein: the side face of the outer end of the polycrystalline diamond blade protrudes out of the conical surface of the cone.
9. The polycrystalline diamond center drill of claim 1, wherein: in the cone, a plurality of pyramid surfaces with different angles are arranged on the conical surface part corresponding to the bottom surface of the diamond blade.
10. The polycrystalline diamond center drill of claim 1, wherein: the cylindrical surface of the round rod is also provided with a groove for fixing the round rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200624641U CN202461617U (en) | 2012-02-22 | 2012-02-22 | Polycrystalline diamond center drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200624641U CN202461617U (en) | 2012-02-22 | 2012-02-22 | Polycrystalline diamond center drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202461617U true CN202461617U (en) | 2012-10-03 |
Family
ID=46909814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200624641U Expired - Fee Related CN202461617U (en) | 2012-02-22 | 2012-02-22 | Polycrystalline diamond center drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202461617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934906A (en) * | 2013-01-23 | 2014-07-23 | 厦门钨业股份有限公司 | Miniature ultra-hard drilling and milling cutter special for machining ceramic materials and machining method thereof |
-
2012
- 2012-02-22 CN CN2012200624641U patent/CN202461617U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934906A (en) * | 2013-01-23 | 2014-07-23 | 厦门钨业股份有限公司 | Miniature ultra-hard drilling and milling cutter special for machining ceramic materials and machining method thereof |
| CN103934906B (en) * | 2013-01-23 | 2016-04-13 | 厦门钨业股份有限公司 | Be exclusively used in miniature superhard brill milling cutter and the processing method thereof of processing ceramic material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20121003 Termination date: 20160222 |