CN111515433A - Method for machining deep hole on stainless steel part by numerical control deep hole drilling machine - Google Patents
Method for machining deep hole on stainless steel part by numerical control deep hole drilling machine Download PDFInfo
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- CN111515433A CN111515433A CN202010390012.5A CN202010390012A CN111515433A CN 111515433 A CN111515433 A CN 111515433A CN 202010390012 A CN202010390012 A CN 202010390012A CN 111515433 A CN111515433 A CN 111515433A
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- deep hole
- cutter
- drilling machine
- numerical control
- stainless steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to a deep hole machining method, in particular to a method for machining a deep hole on a stainless steel part by a numerical control deep hole drilling machine. The problems that chips cannot be removed and the surface roughness of an inner hole is out of tolerance when a numerical control deep hole drilling machine processes deep holes on stainless steel parts are solved. The method for processing the deep hole on the stainless steel part by the numerical control deep hole drilling machine comprises the steps of providing a cutting feed quantity for a gun drill, wherein the size of drill cuttings generated by the cutting feed quantity meets the chip removal requirement, namely the gun drill is not blocked; then retracting the cutter, wherein the cutter retracting amount ensures that the drill cuttings are discharged from the drill hole in the cutter retracting process; the cutter is fed to the cutter withdrawal point again, which is a cycle; and finishing the deep hole machining after multiple cycles. The invention solves the problems that the surface of a workpiece is scribed with a plurality of deep grooves, the surface quality is seriously influenced, and the roughness is over-poor. In the processing, the chip can not be removed, the gun drill is blocked, the gun drill is broken, and the production cost is increased rapidly. And the roughness of the inner surface of the processed deep hole is qualified. Greatly saves the production cost, leads the production to be carried out smoothly and improves the production efficiency.
Description
Technical Field
The invention relates to a deep hole machining method, in particular to a method for machining a deep hole on a stainless steel part by a numerical control deep hole drilling machine.
Background
The deep hole machining is generally called deep hole machining, wherein the ratio L/D of the length L of the hole to the diameter D of the hole is larger than 10, and compared with the common hole machining, the deep hole machining is low in production efficiency and high in difficulty. The numerical control deep hole drilling machine is a special machine tool for deep hole drilling, a used cutter is a deep hole gun drill, an inner-cooling and outer chip removal mode is adopted, and cooling liquid enters a cutting area from a cooling hole in the cutter to flush scrap iron out of a workpiece from a chip removal groove of the cutter. The rigidity of the cutter is poor, and the requirement on a process system is high.
When the numerical control deep hole drilling machine is used for processing deep holes on stainless steel parts, the numerical control deep hole drilling machine is influenced by stainless steel materials, and the following problems are easily encountered in processing: firstly, the chips are not easy to curl and break, the chips cannot be discharged, the gun drill is blocked, the gun drill is broken, 3 gun drills with one part broken are processed (the price of the gun drill is as high as 3500 yuan/piece), and the production cost is increased sharply. Secondly, a plurality of deep grooves are cut on the surface of the inner hole of the machined workpiece, the surface quality is seriously influenced, the roughness is over-poor, and the part is scrapped.
Disclosure of Invention
The invention provides a method for machining deep holes on stainless steel parts by a numerical control deep hole drilling machine, which solves the problems that chips cannot be removed and the surface roughness of an inner hole is ultra-poor when the numerical control deep hole drilling machine machines deep holes on the stainless steel parts.
The invention is realized by adopting the following technical scheme: a method for processing deep holes on a stainless steel part by a numerical control deep hole drilling machine is characterized in that a cutting feed quantity is given to a gun drill, and the size of drill cuttings generated by the cutting feed quantity meets the chip removal requirement, namely the gun drill is not blocked (the smaller the feed quantity is, the smaller the drill cuttings are); then retracting the cutter, wherein the cutter retracting amount ensures that the drill cuttings are discharged from the drill hole in the cutter retracting process; the cutter is fed to the cutter withdrawal point again, which is a cycle; and finishing the deep hole machining after multiple cycles.
The cutting feed path of the gun drill is changed, so that the cutting force in the cutting process is changed, and the cutting force borne by the drill cuttings is changed and then broken. And the drill cuttings must be small and given sufficient chip removal time (backout) to be successfully discharged from the gun drill.
The invention solves the technical problems that the surface of an inner hole of a stainless steel workpiece is marked with a plurality of deep grooves, the surface quality is seriously influenced, the roughness is over poor, chips cannot be removed during processing, a gun drill is blocked and broken, and the production cost is sharply increased. And the roughness of the inner surface of the processed deep hole is qualified. Greatly saves the production cost, leads the production to be carried out smoothly and improves the production efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a stainless steel part processed by the processing method of the present invention.
Detailed Description
A stainless steel hollow shaft is processed on a numerical control deep hole drilling machine, the material is 1Cr18Ni9Ti, the shaft length (hole length) is 900mm, and the size of an inner hole is phi 32+0.062The length-diameter ratio is as high as 28.
A method for processing deep holes on a stainless steel part by a numerical control deep hole drilling machine is characterized in that a cutting feed amount is given to a gun drill, the cutting feed amount is 0.05-0.1mm (for example, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm and 0.1 mm) aiming at the stainless steel of 1Cr18Ni9Ti, and the size of drill cuttings generated by the cutting feed amount meets the chip removal requirement, namely the gun drill is not blocked (the smaller the feed amount is, the smaller the drill cuttings are); then retracting, wherein for the stainless steel of 1Cr18Ni9Ti, the retracting amount is 2-3mm (for example, 2mm, 2.5 mm and 3 mm), and the retracting amount ensures that the drill cuttings are discharged from the drill holes in the retracting process; the cutter is fed to the cutter withdrawal point again, which is a cycle; and finishing the deep hole machining after multiple cycles. 9000 stainless steel hollow shafts are processed without gun drill breakage; the roughness of the inner surface of the deep hole is 3.2, and the design requirement is met. In specific implementation, one cycle of the method is programmed into a macro program of the control program of the numerical control deep-hole drilling machine, and the control program of the numerical control deep-hole drilling machine completes machining by calling the macro program for multiple times, so that the programming statement length of the control program of the numerical control deep-hole drilling machine can be shortened, and the reliability and the stability of the operation of the control program are improved.
Claims (3)
1. A method for processing deep holes on a stainless steel part by a numerical control deep hole drilling machine is characterized in that a cutting feed amount is given to a gun drill, and the size of drill cuttings generated by the cutting feed amount meets the chip removal requirement, namely the gun drill is not blocked; then retracting the cutter, wherein the cutter retracting amount ensures that the drill cuttings are discharged from the drill hole in the cutter retracting process; the cutter is fed to the cutter withdrawal point again, which is a cycle; and finishing the deep hole machining after multiple cycles.
2. The method for machining the deep hole on the stainless steel part by the numerical control deep hole drilling machine according to claim 1, wherein the stainless steel material is 1Cr18Ni9Ti, the cutting feed amount is 0.05-0.1mm, and the tool withdrawal amount is 2-3 mm.
3. The method for deep hole drilling by a numerical control deep hole drilling machine on a stainless steel part according to claim 1 or 2, wherein one cycle is programmed as a macro program of a control program of the numerical control deep hole drilling machine, and the control program of the numerical control deep hole drilling machine completes the machining by calling the macro program for a plurality of times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010390012.5A CN111515433A (en) | 2020-05-11 | 2020-05-11 | Method for machining deep hole on stainless steel part by numerical control deep hole drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010390012.5A CN111515433A (en) | 2020-05-11 | 2020-05-11 | Method for machining deep hole on stainless steel part by numerical control deep hole drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111515433A true CN111515433A (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010390012.5A Pending CN111515433A (en) | 2020-05-11 | 2020-05-11 | Method for machining deep hole on stainless steel part by numerical control deep hole drilling machine |
Country Status (1)
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| CN (1) | CN111515433A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682814A (en) * | 2020-12-29 | 2022-07-01 | 博世华域转向***有限公司 | Drilling process for steering column input shaft |
| CN117840486A (en) * | 2024-03-07 | 2024-04-09 | 中车南京浦镇车辆有限公司 | Variable parameter machining method suitable for deep hole drilling machining |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB797760A (en) * | 1954-06-18 | 1958-07-09 | Maschf Augsburg Nuernberg Ag | An improved drilling machine more particularly for drilling deep holes |
| CN106964802A (en) * | 2017-05-09 | 2017-07-21 | 山西平阳重工机械有限责任公司 | Small-deep Hole expanding method and its cutter |
| CN109719323A (en) * | 2019-03-07 | 2019-05-07 | 大连大学 | A kind of High-efficiency mesh drilling new method |
| CN110497152A (en) * | 2019-08-29 | 2019-11-26 | 中国航发南方工业有限公司 | Casing deep hole processing method and its application |
-
2020
- 2020-05-11 CN CN202010390012.5A patent/CN111515433A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB797760A (en) * | 1954-06-18 | 1958-07-09 | Maschf Augsburg Nuernberg Ag | An improved drilling machine more particularly for drilling deep holes |
| CN106964802A (en) * | 2017-05-09 | 2017-07-21 | 山西平阳重工机械有限责任公司 | Small-deep Hole expanding method and its cutter |
| CN109719323A (en) * | 2019-03-07 | 2019-05-07 | 大连大学 | A kind of High-efficiency mesh drilling new method |
| CN110497152A (en) * | 2019-08-29 | 2019-11-26 | 中国航发南方工业有限公司 | Casing deep hole processing method and its application |
Non-Patent Citations (2)
| Title |
|---|
| 强高培等: "《工厂常用电气设备控制线路识图》", 30 October 2011, 中国电力出版社 * |
| 李会荣等: "《金属切削加工技术》", 28 February 2017, 西安电子科技大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682814A (en) * | 2020-12-29 | 2022-07-01 | 博世华域转向***有限公司 | Drilling process for steering column input shaft |
| CN117840486A (en) * | 2024-03-07 | 2024-04-09 | 中车南京浦镇车辆有限公司 | Variable parameter machining method suitable for deep hole drilling machining |
| CN117840486B (en) * | 2024-03-07 | 2024-05-17 | 中车南京浦镇车辆有限公司 | Variable parameter machining method suitable for deep hole drilling machining |
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Application publication date: 20200811 |
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| RJ01 | Rejection of invention patent application after publication |