CN110961863A - Taper hole mirror surface machining process - Google Patents
Taper hole mirror surface machining process Download PDFInfo
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- CN110961863A CN110961863A CN201911128256.XA CN201911128256A CN110961863A CN 110961863 A CN110961863 A CN 110961863A CN 201911128256 A CN201911128256 A CN 201911128256A CN 110961863 A CN110961863 A CN 110961863A
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- Prior art keywords
- taper hole
- hole
- taper
- drill
- mirror
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- 238000003754 machining Methods 0.000 title claims description 9
- 238000005498 polishing Methods 0.000 claims abstract description 16
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims abstract description 4
- 238000007730 finishing process Methods 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 4
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004166 Lanolin Substances 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 235000013871 bee wax Nutrition 0.000 claims description 3
- 239000012166 beeswax Substances 0.000 claims description 3
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 3
- 235000019388 lanolin Nutrition 0.000 claims description 3
- 229940039717 lanolin Drugs 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a taper hole mirror surface processing technology, which comprises the following steps: s1, starting the expanding bit to expand the step hole, and gradually reducing the hole diameter of the expanded step hole; s2, starting the deep hole drill to drill a straight-through cylindrical hole; s3, cutting lines on the surface of the taper hole by using high-gloss cutter particles; and S4, mixing the polishing paste and polishing the taper hole until the surface is mirror smooth. The technical scheme has the advantages that the service life of the drill bit is guaranteed by positioning the circle center of the taper hole, firstly drilling the large step hole and then drilling the small step hole, the good mirror surface effect of the taper hole is guaranteed by using the grinding paste according to the method of firstly cutting lines and then polishing, and the original strength is kept.
Description
Technical Field
The invention relates to the technical field of taper hole machining, in particular to a taper hole mirror surface machining process.
Background
In the field of machining, taper hole machining is a common link, but is also a technology which is difficult in traditional machining and is between traditional machining and micro machining. At present, a method of drilling a small hole and then drilling a step is generally adopted to enable a taper hole to have a prototype, and then a module which is consistent with the space of the taper hole is used for extrusion, so that lines in the taper hole are leveled, and the mirror surface effect is achieved. However, the method often causes the drill bit to be damaged, and the strength and the periphery of the taper hole are different, so that stress concentration is caused, and the drill bit is easy to damage.
Disclosure of Invention
In order to solve the above problems, the present invention provides a taper hole mirror surface processing process, comprising the following steps:
s1, starting the expanding bit to expand the step hole, and gradually reducing the hole diameter of the expanded step hole;
s2, starting the deep hole drill to drill a straight-through cylindrical hole;
s3, cutting lines on the surface of the taper hole by using high-gloss cutter particles;
and S4, mixing the polishing paste and polishing the taper hole until the surface is mirror smooth.
Further, the method also comprises the step of detecting the surface roughness of the taper hole.
Further, the surface roughness of the taper hole was visually checked against the roughness template.
Furthermore, the taper hole is checked by a taper plug gauge painting method, and the size of the intersection point is detected by a universal tool microscope or measured by three coordinates.
Further, grinding is carried out annularly around the taper hole, and chips left by grinding are removed every grinding circle.
Further, the polishing paste consists of stearic acid, monoglyceride, beeswax, paraffin, lanolin, montmorillonite, chromium oxide green, graphite powder and alumina powder.
Further, the circle center of the taper hole and the depth length of the drill bit are controlled by the checking fixture and the calibration block.
The technical scheme has the advantages that the service life of the drill bit is guaranteed by positioning the circle center of the taper hole, firstly drilling the large step hole and then drilling the small step hole, the good mirror surface effect of the taper hole is guaranteed by using the grinding paste according to the method of firstly cutting lines and then polishing, and the original strength is kept.
Drawings
FIG. 1 is a schematic illustration of a down-hole (step) drill;
FIG. 2 is a front view of an embryonic (stepped) taper hole;
FIG. 3 is a cross-sectional view of an embryonic (stepped) taper hole;
fig. 4 is a cross-sectional view of a tapered hole after being cut by a high gloss cutting insert.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1 to 4, a taper hole mirror finishing process includes the following steps: controlling the circle center of the taper hole and the depth length of the drill bit by using the checking tool and the calibration block, starting the expanding drill bit to expand the step hole, wherein the aperture of the expanded step hole is required to be gradually reduced, the aperture reduction range is 0.2mm-0.5mm each time, and the expanding depth increase range is 0.2mm-0.5mm each time; starting a deep hole drill to drill a straight-through cylindrical hole; the taper hole is fixed, grains on the surface of the taper hole are cut by using high-light cutter particles (diamonds), and the cutting method can be that the cutting is carried out in sequence along each layer of steps in a rotating mode or the cutting is carried out longitudinally from the surface to the deep position. The cutting depth is less than 0.1 mm; and finally, mixing polishing paste to polish the taper hole until the surface of the taper hole is smooth. The service life of the drill bit is ensured by positioning the circle center of the taper hole, firstly drilling the large step hole and then drilling the small step hole, and the good mirror surface effect of the taper hole is ensured by using grinding paste according to the method of firstly cutting lines and then polishing, and the original strength is kept.
The method further comprises the step of detecting the surface roughness of the taper hole. The taper hole is checked by a taper plug gauge painting method, and the size of the intersection point is detected by a universal tool microscope or measured by three coordinates. The surface roughness of the taper holes was visually checked against the roughness template. The precision of the inner taper hole is inspected by firstly providing a taper plug gauge, namely a standard outer taper gauge, uniformly coating 2-4 lines of red lead or blue oil on the plug gauge, then inserting the plug gauge into the inner taper hole, oppositely grinding and rotating for 60-120 degrees, and extracting a wiping trace of the taper plug gauge for seeing a surface coating to judge whether the inner taper is good or not, wherein the more the contact area is, the better the taper is, and otherwise, the poor the taper is.
Wherein, the circular grinding around the taper hole is stopped every time when grinding, and the grinding is continued after the scraps left by the grinding are washed away by soap water, so that the produced scraps are prevented from influencing the next grinding. The abrading tool may be sandpaper.
Wherein the polishing paste consists of stearic acid, monoglyceride, beeswax, paraffin, lanolin, montmorillonite, chromium oxide green, graphite powder and alumina powder. Compared with the common polishing paste, the polishing paste has the advantages that the montmorillonite and the graphite powder are added according to the composition ratio, and the effect of polishing metal is improved.
Although embodiments of the present invention have been described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A taper hole mirror surface machining process is characterized by comprising the following steps:
s1, starting the expanding bit to expand the step hole, and gradually reducing the hole diameter of the expanded step hole;
s2, starting the deep hole drill to drill a straight-through cylindrical hole;
s3, cutting lines on the surface of the taper hole by using high-gloss cutter particles;
and S4, mixing the polishing paste and polishing the taper hole until the surface is mirror smooth.
2. The mirror finishing process for a taper hole according to claim 1, further comprising detecting a surface roughness of the taper hole.
3. The mirror finishing process for a taper hole according to claim 2, wherein the surface roughness of the taper hole is visually checked against the roughness template.
4. The mirror finishing process for taper hole according to claim 3, wherein the taper hole is inspected by a taper plug gauge painting method, and the size of the intersection is inspected by a universal tool microscope or measured by three coordinates.
5. The mirror finishing process for a taper hole according to claim 1, wherein grinding is performed annularly around the taper hole, and chips left by grinding are removed every round of grinding.
6. The mirror finishing process for taper hole according to claim 1, wherein the polishing paste is composed of stearic acid, monoglyceride, beeswax, paraffin, lanolin, montmorillonite, chromium oxide green, graphite powder and alumina powder.
7. The mirror finishing process for a taper hole according to claim 1, wherein the center of the taper hole and the depth of the drill are controlled by using a gauge and a calibration block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128256.XA CN110961863A (en) | 2019-11-18 | 2019-11-18 | Taper hole mirror surface machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128256.XA CN110961863A (en) | 2019-11-18 | 2019-11-18 | Taper hole mirror surface machining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110961863A true CN110961863A (en) | 2020-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911128256.XA Pending CN110961863A (en) | 2019-11-18 | 2019-11-18 | Taper hole mirror surface machining process |
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| Country | Link |
|---|---|
| CN (1) | CN110961863A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152488A (en) * | 1995-12-22 | 1997-06-25 | 德州机床厂 | Machining method for deep taper hole |
| CN101745663A (en) * | 2009-12-10 | 2010-06-23 | 武汉重工铸锻有限责任公司 | Long-spindle deep-hole tapering device of boring ship and boring method thereof |
| CN103406734A (en) * | 2013-08-22 | 2013-11-27 | 龙工（上海）精工液压有限公司 | Machining method of valve seat of relief valve |
| DE202014000866U1 (en) * | 2014-02-03 | 2015-05-06 | Johne & Co. Präzisionswerkzeuge GmbH | Tool head element for manufacturing a tool head, tool head and tool receiving means |
| CN107999802A (en) * | 2017-12-08 | 2018-05-08 | 重庆红江机械有限责任公司 | A kind of locating guide device and processing method of step deep hole machining |
| CN207508360U (en) * | 2017-04-12 | 2018-06-19 | 郭蓓蓓 | A kind of chip dividing drill head for processing cutting-resistant metal material |
| CN108637612A (en) * | 2018-05-16 | 2018-10-12 | 遵义市遵云制冷配件有限公司 | A kind of processing technology of aero-engine piston |
| CN108788635A (en) * | 2018-06-05 | 2018-11-13 | 湖北三环锻造有限公司 | The method for processing taper hole using taper hole cutter |
| CN208408578U (en) * | 2018-05-17 | 2019-01-22 | 湖北三环锻造有限公司 | Process multi-step hole specific complex boring cutter |
-
2019
- 2019-11-18 CN CN201911128256.XA patent/CN110961863A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152488A (en) * | 1995-12-22 | 1997-06-25 | 德州机床厂 | Machining method for deep taper hole |
| CN101745663A (en) * | 2009-12-10 | 2010-06-23 | 武汉重工铸锻有限责任公司 | Long-spindle deep-hole tapering device of boring ship and boring method thereof |
| CN103406734A (en) * | 2013-08-22 | 2013-11-27 | 龙工（上海）精工液压有限公司 | Machining method of valve seat of relief valve |
| DE202014000866U1 (en) * | 2014-02-03 | 2015-05-06 | Johne & Co. Präzisionswerkzeuge GmbH | Tool head element for manufacturing a tool head, tool head and tool receiving means |
| CN207508360U (en) * | 2017-04-12 | 2018-06-19 | 郭蓓蓓 | A kind of chip dividing drill head for processing cutting-resistant metal material |
| CN107999802A (en) * | 2017-12-08 | 2018-05-08 | 重庆红江机械有限责任公司 | A kind of locating guide device and processing method of step deep hole machining |
| CN108637612A (en) * | 2018-05-16 | 2018-10-12 | 遵义市遵云制冷配件有限公司 | A kind of processing technology of aero-engine piston |
| CN208408578U (en) * | 2018-05-17 | 2019-01-22 | 湖北三环锻造有限公司 | Process multi-step hole specific complex boring cutter |
| CN108788635A (en) * | 2018-06-05 | 2018-11-13 | 湖北三环锻造有限公司 | The method for processing taper hole using taper hole cutter |
Non-Patent Citations (2)
| Title |
|---|
| 王建华;: "长套筒深孔的精密加工", 纺织机械, no. 01 * |
| 蒋士博等: "《机械加工实训教程》", 电子科技大学出版社, pages: 62 - 63 * |
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