CN104625608A - Long and thin flat shaft machining method - Google Patents
Long and thin flat shaft machining method Download PDFInfo
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- CN104625608A CN104625608A CN201410743989.5A CN201410743989A CN104625608A CN 104625608 A CN104625608 A CN 104625608A CN 201410743989 A CN201410743989 A CN 201410743989A CN 104625608 A CN104625608 A CN 104625608A
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- turning
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- allowance
- insulation
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- 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)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention relates to the field of machining, in particular to a long and thin flat shaft machining method. The method includes the following steps that blanking is conducted, wherein appropriate material is selected, 3 mm to 5 mm working allowance is reserved on a single edge in the radial direction, 5 mm to 8 mm working allowance is reserved in the length direction, and the overall length straightness of a workpiece is smaller than or equal to 1 mm; heat treatment is conducted, wherein full-phase check spheroidizing annealing is conducted, 750 DEG C to 770 DEG C heat preservation is conducted for 1 hour to 2 hours, and then 620 DEG C to 640 DEG C heat preservation is conducted for 1 hour to 2 hours, the heat preservation step is executed three times, a furnace is cooled to be of the temperature smaller than or equal to 400 DEG C, the material is discharged out of the furnace, the hardness ranges from 170 HBW to 197 HBW, and the overall length straightness is smaller than or equal to 1.5 mm; rough turning is conducted, the end face turning length is taken, the 3 mm to 5 mm working allowance is reserved, alignment and center hole drilling are conducted, and top clamping and excircle rough turning are conducted till required size is met; heat treatment is conducted, and high-temperature aging is conducted; semi-finish turning is conducted on the end face; heat treatment is conducted, low-temperature aging is conducted, turning is conducted on the end face, and excircle finish turning is conducted; heat treatment is conducted, and low-temperature aging is conducted; two-end face turning is conducted; grinding is conducted. The machining process is simple, the workpiece dimensional tolerance and form and location tolerance can be guaranteed, machining efficiency is improved, and the production cost is lowered.
Description
Technical field
The present invention relates to field of machining, be specifically related to elongated flat axle processing method.
Background technology
Elongated flat axle uses very extensive in machinery industry, but the processing of elongated flat axle, difficulty is very large, adopt the flat axle of processing method processing milling machine that tradition is beaten, be difficult to the dimensional accuracy and the accuracy of form and position requirement that ensure workpiece, and this part after processing and be easy in use procedure occur distortion, and then affects the service life of workpiece.
Summary of the invention
In order to solve the problem, the invention provides a kind of process simple, workpiece size tolerance and form and position tolerance can be ensured, and improve working (machining) efficiency, reduce the elongated flat axle processing method of production cost.
The elongated flat axle processing method of the present invention, comprises the following steps:
The first step, blanking, selects suitable material, and the monolateral allowance staying 3mm-5mm in radial directions, stay the allowance of 5mm-8mm in the longitudinal direction, workpiece total length linearity≤1mm;
Second step, heat treatment, checks spheroidizing entirely mutually, 750 DEG C ~ 770 DEG C insulation 1h-2h, drops to 620 DEG C ~ 640 DEG C insulation 1h-2h, three times repeatedly, stove is as cold as≤400 DEG C come out of the stove, hardness 170HBW-197HBW, total length linearity≤1.5mm;
3rd step, rough turn, face work gets length, stays the allowance of 3mm-5mm, and aligning bores center hole, and the rough turn cylindrical in folder top is to requiring size;
4th step, heat treatment, high-temperature aging, temperature is 500 DEG C-550 DEG C, insulation lOh, and outer circle diameter is to total run-out amount≤1mm;
5th step, half finish turning, face work, length direction stays the allowance of 1mm-2mm, and aligning bores center hole, with follow-rest top car half fine turning outer circle, rough turn two ends axle journal;
6th step, heat treatment, low temperature aging, temperature is 180 DEG C-240 DEG C, insulation 12h, and outer circle diameter is to total run-out amount≤0.5mm;
7th step, finish turning, face work, length direction stays the allowance of 0.5mm-1mm, and aligning heavily bores center hole to requiring size, fine turning outer circle, be aided with follow-rest, survey excircle radical runout, first time feed back engagement of the cutting edge is greater than footpath and jumps, all the other two knife back bites are successively decreased successively, and finish turning two ends axle journal is to requiring size;
8th step, heat treatment, low temperature aging, temperature is 180 DEG C-240 DEG C, insulation 12h, and outer circle diameter is to total run-out amount≤0.2mm;
9th step, car, car both ends of the surface, aligning heavily bores center hole, and length direction is to requiring size;
Tenth step, mill, thick fine cylindrical is to requiring size, and each grinding depth 0.01mm, slightly refines two ends axle journal to requiring size, corase grind two sides to 1 require size, symmetry tolerance≤0.05mm, linearity≤0.05mm, in grinding process, both sides are ground repeatedly, each grinding depth 0.01mm, every grinding 0.05mm adjusts face.
Process of the present invention is simple, can ensure workpiece size tolerance and form and position tolerance, and improves working (machining) efficiency, reduces production cost.
Detailed description of the invention
The elongated flat axle processing method of the present invention, comprises the following steps:
The first step, blanking, selects suitable material, and the monolateral allowance staying 3mm-5mm in radial directions, stay the allowance of 5mm-8mm in the longitudinal direction, workpiece total length linearity≤1mm;
Second step, heat treatment, checks spheroidizing entirely mutually, 750 DEG C ~ 770 DEG C insulation 1h-2h, drops to 620 DEG C ~ 640 DEG C insulation 1h-2h, three times repeatedly, stove is as cold as≤400 DEG C come out of the stove, hardness 170HBW-197HBW, total length linearity≤1.5mm;
3rd step, rough turn, face work gets length, stays the allowance of 3mm-5mm, and aligning bores center hole, and the rough turn cylindrical in folder top is to requiring size;
4th step, heat treatment, high-temperature aging, temperature is 500 DEG C-550 DEG C, insulation lOh, and outer circle diameter is to total run-out amount≤1mm;
5th step, half finish turning, face work, length direction stays the allowance of 1mm-2mm, and aligning bores center hole, with follow-rest top car half fine turning outer circle, rough turn two ends axle journal;
6th step, heat treatment, low temperature aging, temperature is 180 DEG C-240 DEG C, insulation 12h, and outer circle diameter is to total run-out amount≤0.5mm;
7th step, finish turning, face work, length direction stays the allowance of 0.5mm-1mm, and aligning heavily bores center hole to requiring size, fine turning outer circle, be aided with follow-rest, survey excircle radical runout, first time feed back engagement of the cutting edge is greater than footpath and jumps, all the other two knife back bites are successively decreased successively, and finish turning two ends axle journal is to requiring size;
8th step, heat treatment, low temperature aging, temperature is 180 DEG C-240 DEG C, insulation 12h, and outer circle diameter is to total run-out amount≤0.2mm;
9th step, car, car both ends of the surface, aligning heavily bores center hole, and length direction is to requiring size;
Tenth step, mill, thick fine cylindrical is to requiring size, and each grinding depth 0.01mm, slightly refines two ends axle journal to requiring size, corase grind two sides to 1 require size, symmetry tolerance≤0.05mm, linearity≤0.05mm, in grinding process, both sides are ground repeatedly, each grinding depth 0.01mm, every grinding 0.05mm adjusts face.
Process of the present invention is simple, can ensure workpiece size tolerance and form and position tolerance, and improves working (machining) efficiency, reduces production cost.
Claims (1)
1. an elongated flat axle processing method, is characterized in that, comprise the following steps:
The first step, blanking, selects suitable material, and the monolateral allowance staying 3mm-5mm in radial directions, stay the allowance of 5mm-8mm in the longitudinal direction, workpiece total length linearity≤1mm;
Second step, heat treatment, checks spheroidizing entirely mutually, 750 DEG C ~ 770 DEG C insulation 1h-2h, drops to 620 DEG C ~ 640 DEG C insulation 1h-2h, three times repeatedly, stove is as cold as≤400 DEG C come out of the stove, hardness 170HBW-197HBW, total length linearity≤1.5mm;
3rd step, rough turn, face work gets length, stays the allowance of 3mm-5mm, and aligning bores center hole, and the rough turn cylindrical in folder top is to requiring size;
4th step, heat treatment, high-temperature aging, temperature is 500 DEG C-550 DEG C, insulation lOh, and outer circle diameter is to total run-out amount≤1mm;
5th step, half finish turning, face work, length direction stays the allowance of 1mm-2mm, and aligning bores center hole, with follow-rest top car half fine turning outer circle, rough turn two ends axle journal;
6th step, heat treatment, low temperature aging, temperature is 180 DEG C-240 DEG C, insulation 12h, and outer circle diameter is to total run-out amount≤0.5mm;
7th step, finish turning, face work, length direction stays the allowance of 0.5mm-1mm, and aligning heavily bores center hole to requiring size, fine turning outer circle, be aided with follow-rest, survey excircle radical runout, first time feed back engagement of the cutting edge is greater than footpath and jumps, all the other two knife back bites are successively decreased successively, and finish turning two ends axle journal is to requiring size;
8th step, heat treatment, low temperature aging, temperature is 180 DEG C-240 DEG C, insulation 12h, and outer circle diameter is to total run-out amount≤0.2mm;
9th step, car, car both ends of the surface, aligning heavily bores center hole, and length direction is to requiring size;
Tenth step, mill, thick fine cylindrical is to requiring size, and each grinding depth 0.01mm, slightly refines two ends axle journal to requiring size, corase grind two sides to 1 require size, symmetry tolerance≤0.05mm, linearity≤0.05mm, in grinding process, both sides are ground repeatedly, each grinding depth 0.01mm, every grinding 0.05mm adjusts face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410743989.5A CN104625608A (en) | 2014-12-09 | 2014-12-09 | Long and thin flat shaft machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410743989.5A CN104625608A (en) | 2014-12-09 | 2014-12-09 | Long and thin flat shaft machining method |
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| Publication Number | Publication Date |
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| CN104625608A true CN104625608A (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410743989.5A Pending CN104625608A (en) | 2014-12-09 | 2014-12-09 | Long and thin flat shaft machining method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364088A (en) * | 2015-12-23 | 2016-03-02 | 常熟市淼泉压缩机配件有限公司 | Improved machining technology for turning automobile torsion bars |
| CN105479104A (en) * | 2015-12-08 | 2016-04-13 | 合肥工业大学 | Machining method of slender shaft made of17-4PH stainless steel material |
| CN107649842A (en) * | 2017-11-09 | 2018-02-02 | 王海艳 | A kind of flange processing technique |
| CN112809397A (en) * | 2020-04-26 | 2021-05-18 | 昆明嘉和科技股份有限公司 | Pump shaft machining device and method for high-temperature concentrated sulfuric acid submerged pump |
| CN114193094A (en) * | 2021-12-08 | 2022-03-18 | 江苏特贝尔精密机械科技有限公司 | Machining process of ultrahigh precision main shaft |
-
2014
- 2014-12-09 CN CN201410743989.5A patent/CN104625608A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479104A (en) * | 2015-12-08 | 2016-04-13 | 合肥工业大学 | Machining method of slender shaft made of17-4PH stainless steel material |
| CN105364088A (en) * | 2015-12-23 | 2016-03-02 | 常熟市淼泉压缩机配件有限公司 | Improved machining technology for turning automobile torsion bars |
| CN107649842A (en) * | 2017-11-09 | 2018-02-02 | 王海艳 | A kind of flange processing technique |
| CN112809397A (en) * | 2020-04-26 | 2021-05-18 | 昆明嘉和科技股份有限公司 | Pump shaft machining device and method for high-temperature concentrated sulfuric acid submerged pump |
| CN114193094A (en) * | 2021-12-08 | 2022-03-18 | 江苏特贝尔精密机械科技有限公司 | Machining process of ultrahigh precision main shaft |
| CN114193094B (en) * | 2021-12-08 | 2023-08-15 | 江苏特贝尔精密机械科技有限公司 | Processing technology of ultra-high precision spindle |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |