CN104057267A - Manufacturing process of CrWMn steel gear milling lathe lead screw - Google Patents
Manufacturing process of CrWMn steel gear milling lathe lead screw Download PDFInfo
- Publication number
- CN104057267A CN104057267A CN201410288631.8A CN201410288631A CN104057267A CN 104057267 A CN104057267 A CN 104057267A CN 201410288631 A CN201410288631 A CN 201410288631A CN 104057267 A CN104057267 A CN 104057267A
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- CN
- China
- Prior art keywords
- manufacturing process
- leading screw
- gear milling
- milling lathe
- steel gear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Abstract
The invention relates to a manufacturing process of a gear milling lathe lead screw, and specifically relates to a manufacturing process of the CrWMn steel gear milling lathe lead screw. The manufacturing process comprises the following steps of: blanking; normalizing; spheroidizing annealing; mechanical rough machining; stress annealing; mechanical finish machining; quenching; tempering; finish grinding threads; low temperature aging; finish grinding an excircle and the threads to a finished product. The CrWMn steel gear milling lathe lead screw manufactured by the method provided by the method has surface hardness of 56-60HRC; the straightness after heat treatment is less than or equal to 0.20mm.
Description
Technical field
The present invention relates to the manufacturing process of machine tool lead screw, specifically the manufacturing process of CrWMn steel gear milling lathe leading screw.
Background technology
Main shaft and leading screw are all the strength members of Metal Cutting Machine Tool.
Leading screw is applied to feed mechanism and the speed adjusting gear of lathe, performance that common leading screw requires to have antifatigue, resistance to wear etc., and the leading screw of working under the specific conditions such as corrosive medium and high temperature, also needs to have corrosion resistance and heat resistance etc.
Gear milling lathe leading screw draw ratio is large (being about 10:1), in heat treatment process, very easily deform, and CrWMn steel hardenability is fine, after integral quenching sclerosis, greatly increased the difficulty of alignment, therefore, Design of Heat Treatment Process not only will be considered the measure of Reducing distortion, also must consider effective aligning method.
Summary of the invention
The present invention is directed to above-mentioned technical problem provides a kind of manufacturing process of CrWMn steel gear milling lathe leading screw.
The present invention adopts following scheme: the manufacturing process of CrWMn steel gear milling lathe leading screw, comprises following step:
Step 1, blanking;
Step 2, normalized treatment;
Step 3, spheroidizing;
Step 4, mechanical roughing;
Step 5, stress relief annealing;
Step 6, machine finishing;
Step 7, quenching;
Step 8, tempering;
Step 9, fine grinding screw thread;
Step 10, low temperature aging;
Step 11, fine cylindrical and be threaded into finished product
Described normalizing: every interval 10mm bundles, is lifted in deep-wall type resistance furnace, in 950 ℃ add heat penetration and burn after, hang cooling in air.
Described spheroidizing: leading screw is bundled, be lifted in deep-wall type resistance furnace, add heat penetration burn 2-3h in 770-790 ℃, cool to 670-690 ℃ with stove, continue stove cold after stop 5-6h, cooling rate is 20-30 ℃/h, to air cooling below 550 ℃.
Described stress relief annealing: bundle, be lifted in deep-wall type resistance furnace, be as cold as 500 ℃ with stove after 550-650 ℃ of heating 5-6h, air cooling is also aligned to linearity tolerance≤0.20mm.
Described isothermal hardening: branched leading screw hanging is on special hanger, and hanging packs in deep-wall type resistance furnace, adds after heat penetration burning in 830-850 ℃, quench in the salt made from earth containing a comparatively high percentage of sodium chloride isothermobath of special-purpose 250-270 ℃, stop after 4-6h, by taking out alignment while hot, linearity after alignment≤process 1/31 of pre-allowance.
Described tempering: hanging and immersing in special-purpose deep-wall type salt made from earth containing a comparatively high percentage of sodium chloride liquid furnace, air cooling after 200-220 ℃ of heating 6-8h.
Also comprise sandblast, emphasis sprays recessed to a side, with alignment residual deformation and the residual dirt of cleaning.
Described timeliness: hanging and immersing in special-purpose deep-wall type salt made from earth containing a comparatively high percentage of sodium chloride liquid furnace, air cooling after 140-180 ℃ of heating 8-12h.
Finally clean and antirust processing: in clear water, rinse, after removal salt made from earth containing a comparatively high percentage of sodium chloride, be coated with antirust oil or Passivation Treatment.
Beneficial effect of the present invention: the case hardness according to the CrWMn steel gear milling lathe leading screw after the inventive method manufacture reaches 56-60HRC; Linearity≤0.20mm after heat treatment.
The specific embodiment
Below in conjunction with specific embodiment, the manufacturing process of CrWMn steel gear milling lathe leading screw of the present invention is elaborated.
The manufacturing process of CrWMn steel gear milling lathe leading screw, comprises following step:
Step 1, blanking;
Step 2, normalized treatment;
Step 3, spheroidizing;
Step 4, mechanical roughing;
Step 5, stress relief annealing;
Step 6, machine finishing;
Step 7, quenching;
Step 8, tempering;
Step 9, fine grinding screw thread;
Step 10, low temperature aging;
Step 11, fine cylindrical and be threaded into finished product
Described normalizing: every interval 10mm bundles, is lifted in RJ2-95-9 type deep-well formula resistance furnace, in 950 ℃ add heat penetration and burn after, hang cooling in air.
Described spheroidizing: leading screw is bundled, be lifted in deep-wall type resistance furnace, add heat penetration burn 2-3h in 770-790 ℃, cool to 670-690 ℃ with stove, continue stove cold after stop 5-6h, cooling rate is 20-30 ℃/h, to air cooling below 550 ℃.
Described stress relief annealing: bundle, be lifted in deep-wall type resistance furnace, be as cold as 500 ℃ with stove after 550-650 ℃ of heating 5-6h, air cooling is also aligned to linearity tolerance≤0.20mm.
Described isothermal hardening: branched leading screw hanging is on special hanger, and hanging packs in deep-wall type resistance furnace, adds after heat penetration burning in 830-850 ℃, quench in the salt made from earth containing a comparatively high percentage of sodium chloride isothermobath of special-purpose 250-270 ℃, stop after 4-6h, by taking out alignment while hot, linearity after alignment≤process 1/31 of pre-allowance.
Described tempering: hanging and immersing in special-purpose deep-wall type salt made from earth containing a comparatively high percentage of sodium chloride liquid furnace, air cooling after 200-220 ℃ of heating 6-8h.
Also comprise sandblast, emphasis sprays recessed to a side, with alignment residual deformation and the residual dirt of cleaning.
Described timeliness: hanging and immersing in special-purpose deep-wall type salt made from earth containing a comparatively high percentage of sodium chloride liquid furnace, air cooling after 140-180 ℃ of heating 8-12h.
Finally clean and antirust processing: in clear water, rinse, after removal salt made from earth containing a comparatively high percentage of sodium chloride, be coated with antirust oil or Passivation Treatment.
Result: the case hardness according to the CrWMn steel gear milling lathe leading screw after the inventive method manufacture reaches 56-60HRC; Linearity≤0.20mm after heat treatment.
Claims (8)
1. a manufacturing process for CrWMn steel gear milling lathe leading screw, is characterized in that, comprises following step:
Step 1, blanking;
Step 2, normalized treatment;
Step 3, spheroidizing;
Step 4, mechanical roughing;
Step 5, stress relief annealing;
Step 6, machine finishing;
Step 7, quenching;
Step 8, tempering;
Step 9, fine grinding screw thread;
Step 10, low temperature aging;
Step 11, fine cylindrical and be threaded into finished product
The manufacturing process of CrWMn steel gear milling lathe leading screw according to claim 1, is characterized in that described normalizing: every interval 10mm bundles, be lifted in deep-wall type resistance furnace, in 950 ℃ add heat penetration and burn after, hang cooling in air.
2. the manufacturing process of CrWMn steel gear milling lathe leading screw according to claim 1, it is characterized in that, described spheroidizing: leading screw is bundled, be lifted in deep-wall type resistance furnace, in 770-790 ℃, add heat penetration and burn 2-3h, with stove, cool to 670-690 ℃, after stop 5-6h, continue stove cold, cooling rate is 20-30 ℃/h, to air cooling below 550 ℃.
3. the manufacturing process of CrWMn steel gear milling lathe leading screw according to claim 1, it is characterized in that described stress relief annealing: bundle, be lifted in deep-wall type resistance furnace, after 550-650 ℃ of heating 5-6h, with stove, be as cold as 500 ℃, air cooling is also aligned to linearity tolerance≤0.20mm.
4. according to the manufacturing process of CrWMn steel gear milling lathe leading screw claimed in claim 1, it is characterized in that, described isothermal hardening: branched leading screw hanging is on special hanger, hanging packs in deep-wall type resistance furnace, in 830-850 ℃ add heat penetration and burn after, in the salt made from earth containing a comparatively high percentage of sodium chloride isothermobath of special-purpose 250-270 ℃ quenched, stop after 4-6h, by taking out alignment while hot, linearity after alignment≤process 1/31 of pre-allowance.
5. according to the manufacturing process of CrWMn steel gear milling lathe leading screw claimed in claim 1, it is characterized in that described tempering: hanging and immersing in special-purpose deep-wall type salt made from earth containing a comparatively high percentage of sodium chloride liquid furnace, air cooling after 200-220 ℃ of heating 6-8h.
6. according to the manufacturing process of CrWMn steel gear milling lathe leading screw claimed in claim 1, it is characterized in that, also comprise sandblast, emphasis sprays recessed to a side, with alignment residual deformation and the residual dirt of cleaning.
7. according to the manufacturing process of CrWMn steel gear milling lathe leading screw claimed in claim 1, it is characterized in that described timeliness: hanging and immersing in special-purpose deep-wall type salt made from earth containing a comparatively high percentage of sodium chloride liquid furnace, air cooling after 140-180 ℃ of heating 8-12h.
8. according to the manufacturing process of CrWMn steel gear milling lathe leading screw claimed in claim 1, it is characterized in that, finally clean and antirust processing: in clear water, rinse, after removal salt made from earth containing a comparatively high percentage of sodium chloride, be coated with antirust oil or Passivation Treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288631.8A CN104057267A (en) | 2014-06-26 | 2014-06-26 | Manufacturing process of CrWMn steel gear milling lathe lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288631.8A CN104057267A (en) | 2014-06-26 | 2014-06-26 | Manufacturing process of CrWMn steel gear milling lathe lead screw |
Publications (1)
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| CN104057267A true CN104057267A (en) | 2014-09-24 |
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| CN201410288631.8A Pending CN104057267A (en) | 2014-06-26 | 2014-06-26 | Manufacturing process of CrWMn steel gear milling lathe lead screw |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959791A (en) * | 2015-07-07 | 2015-10-07 | 成都亨通兆业精密机械有限公司 | Precise lead screw machining technology |
| CN108000079A (en) * | 2017-12-27 | 2018-05-08 | 苏州欧鹏自动化设备有限公司 | A kind of processing technology of leading screw |
| CN108103292A (en) * | 2017-12-29 | 2018-06-01 | 苏州欧鹏自动化设备有限公司 | A kind of leading screw heat treatment process |
| CN109048239A (en) * | 2018-10-09 | 2018-12-21 | 中国航发哈尔滨东安发动机有限公司 | A kind of Sliding leadscrew nut pair processing method |
| CN112372257A (en) * | 2020-12-02 | 2021-02-19 | 浙江凯亚德轴承制造有限公司 | Machining process of ball screw |
| CN112481477A (en) * | 2020-10-28 | 2021-03-12 | 江麓机电集团有限公司 | Heat treatment method of 30CrMnSiA thin steel plate fine punching part |
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| EP1356891A1 (en) * | 2002-04-22 | 2003-10-29 | HAY-TEC Automotive GmbH & Co. KG | Method of manufacturing sliding sleeves for gear boxes |
| CN101709427A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Low-cost, high-strength, high-toughness and high-abrasion resistance cold-working die steel and preparation method thereof |
| CN101713052A (en) * | 2009-09-04 | 2010-05-26 | 山东远大模具材料有限公司 | Non-quenching high-toughness cold-working die steel and production process |
| CN102796958A (en) * | 2012-09-01 | 2012-11-28 | 常州机械刀片有限公司 | Alloy designed steel mechanical blade for preventing network carbide on CrWMn steel from being separated out |
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2014
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| CN1062006A (en) * | 1991-09-03 | 1992-06-17 | 国营大连红旗机械厂 | Processing method with making push type broach of leather laminating machine with chrome steel |
| EP1356891A1 (en) * | 2002-04-22 | 2003-10-29 | HAY-TEC Automotive GmbH & Co. KG | Method of manufacturing sliding sleeves for gear boxes |
| CN101713052A (en) * | 2009-09-04 | 2010-05-26 | 山东远大模具材料有限公司 | Non-quenching high-toughness cold-working die steel and production process |
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| CN102796958A (en) * | 2012-09-01 | 2012-11-28 | 常州机械刀片有限公司 | Alloy designed steel mechanical blade for preventing network carbide on CrWMn steel from being separated out |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959791A (en) * | 2015-07-07 | 2015-10-07 | 成都亨通兆业精密机械有限公司 | Precise lead screw machining technology |
| CN108000079A (en) * | 2017-12-27 | 2018-05-08 | 苏州欧鹏自动化设备有限公司 | A kind of processing technology of leading screw |
| CN108103292A (en) * | 2017-12-29 | 2018-06-01 | 苏州欧鹏自动化设备有限公司 | A kind of leading screw heat treatment process |
| CN109048239A (en) * | 2018-10-09 | 2018-12-21 | 中国航发哈尔滨东安发动机有限公司 | A kind of Sliding leadscrew nut pair processing method |
| CN112481477A (en) * | 2020-10-28 | 2021-03-12 | 江麓机电集团有限公司 | Heat treatment method of 30CrMnSiA thin steel plate fine punching part |
| CN112372257A (en) * | 2020-12-02 | 2021-02-19 | 浙江凯亚德轴承制造有限公司 | Machining process of ball screw |
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Application publication date: 20140924 |
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