CN105364409A - Manufacturing method of special-use chuck for ultra-high precision groove grinding machine - Google Patents
Manufacturing method of special-use chuck for ultra-high precision groove grinding machine Download PDFInfo
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- CN105364409A CN105364409A CN201410396916.3A CN201410396916A CN105364409A CN 105364409 A CN105364409 A CN 105364409A CN 201410396916 A CN201410396916 A CN 201410396916A CN 105364409 A CN105364409 A CN 105364409A
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Abstract
The invention discloses a manufacturing method for increasing the stability of a special-use chuck for an ultra-high precision groove grinding machine. The method comprises following steps: blanking; performing annealing to workpieces; successively performing turning, milling and bench work to the workpieces; then performing heat treatment to the workpieces; performing coarse grinding; then performing heat treatment to the workpieces; finally performing fine grinding. According to the provided method, after two times of freezing treatments, retained austenite is eliminated and the material stability is increased; through three times of ageing treatments and two times of tempering treatments, internal stress is fully released and stress deformations disappear; fine finishing is performed to the chuck after the stability of the chuck is guaranteed, the precision of the chuck is kept within 0.001, and the service life of the chuck increases from 30-50 thousand times to 120-140 thousand times. The chucks can completely substitutes for similar imported chucks. In the aspects of precision and service life, the chucks provided by the invention surpass similar imported chucks.
Description
Technical field
The present invention relates to a kind of processing method, specifically the processing method of superhigh precision notch grinder special carrier.
Background technology
The workpiece of superhigh precision notch grinder special carrier processing is minimum, so complete processing plant is also very little, the clamping force of clamping device is also very little, and the chuck of external import is too hard, time have not clamping phenomenon to occur, cause percent defective to increase.Machining accuracy, distortion (Stress Release) has the effect of restriction and technical bottleneck to process equipment overall precision.Heat treatment rear stability all has impact to precision and service efficiency and life-span.The improvement of processing method has impact to terminal precision.
Summary of the invention
The object of the invention is the deficiency existed for prior art, provide precision high, the processing method of the superhigh precision notch grinder special carrier of good stability, long service life.
For achieving the above object, the technical solution used in the present invention is improve the processing method of superhigh precision notch grinder special carrier stability, comprises the following steps:
Blanking; Workpiece is carried out annealing process, workpiece is heated to 500 ° of C-600 ° of C, cools to normal temperature with the furnace; Workpiece is machined successively, Milling Machining and pincers processing; Then workpiece is heat-treated; Roughly grind again; Then workpiece is heat-treated; Finally refine.
Heat treatment step is as follows:
(1) first after turn-milling cutting by workpiece Ageing Treatment 10h-12h under 170-190 ° of C;
(2) be then cooled to normal temperature, then quench, hardening heat is 820 ° of C-860 ° of C, and the time is 35min-45min, then vertically puts into cooling fluid and to quench 2-3min;
(3) then workpiece entirety is carried out tempering, comprise clamping part, elastic portion and threaded portion, temperature 250 ° of C-270 ° of C, the time is 110min-130min, makes workpiece integral hardness reach HRC58-62;
(4) again the elastic portion of workpiece and threaded portion are carried out tempering, temperature 370 ° of C-400 ° of C, the time is 110min-130min, makes elastic portion and threaded portion hardness reach HRC40-45;
(5) carry out Ageing Treatment after tempering, aging temp is 120 ° of C to 140 ° of C, and the time is 7h-8h;
(6) carry out freezing processing after timeliness, cryogenic temperature is-100 ° of C to-120 ° of C, and the time is 2.5h-3.5h; Disappear
Except retained austenite;
(7) then roughly grind chuck, after corase grind, surplus is 0.1mm, and carry out Ageing Treatment afterwards, aging temp is
120 ° of C-140 ° of C, the time is 10h-12h;
(8) carry out freezing processing after timeliness, cryogenic temperature is-70C ° to-90 ° C, and the time is 1h-2h.
Preferably, in described heat treatment step (1), aging temp is 180 ° of C, and the time is 12h.
Preferably, in described heat treatment step (2), the cool time is 40min.
Preferably, in described heat treatment step (3), temperature is 260 ° of C, and the time is 2h.
Preferably, in described heat treatment step (4), temperature is 380 ° of C, and the time is 2h.
Preferably, in described heat treatment step (5), aging temp is 130 ° of C, and the time is 8h.
Preferably, in described heat treatment step (6), cryogenic temperature is-120 ° of C, and the time is 3h.
Preferably, in described heat treatment step (7), aging temp is 130 ° of C, and the time is 12h.
Preferably, in described heat treatment step (8), cryogenic temperature is-80 ° of C, and the time is 1.5h.
Beneficial effect: in method provided by the invention, after twice freezing processing, eliminates retained austenite, improves stability of material; Through three Ageing Treatment and double tempering, material internal stress is able to abundant release, without stress deformation.After the stability of chuck is guaranteed, carry out fine finishining to chuck, ensure that the precision of chuck is within 0.001, the service life of chuck is increased to 12-14 ten thousand times for ten thousand times by 3-5.Substitute the similar chuck of import completely.
Detailed description of the invention
Below in conjunction with specific embodiment, illustrate the present invention further, the present embodiment is implemented under premised on technical solution of the present invention, should understand these embodiments and only be not used in for illustration of the present invention and limit the scope of the invention.
Embodiment one:
Workpiece is carried out annealing process, workpiece is heated to 500 ° of C-600 ° of C, cools to normal temperature with the furnace; Workpiece is machined successively, Milling Machining and pincers processing; Then workpiece is heat-treated; Roughly grind again; Then workpiece is heat-treated; Finally carry out fine grinding to finished product.
Heat treatment step is as follows:
(1) first after turn-milling cutting by workpiece Ageing Treatment 12h under 170 ° of C;
(2) be then cooled to normal temperature, then quench, hardening heat is 820 ° of C-860 ° of C, and the time is 35min, then vertically puts into cooling fluid and to quench 2min;
(3) then workpiece entirety is carried out tempering, comprise clamping part, elastic portion and threaded portion, temperature 250 ° of C, the time is 110minmin, makes workpiece integral hardness reach HRC58;
(4) again the elastic portion of workpiece and threaded portion are carried out tempering, temperature 370 ° of C, time 110min, make elastic portion and threaded portion hardness reach HRC40;
(5) carry out Ageing Treatment after tempering, aging temp is 120 ° of C, and the time is 8h;
(6) carry out freezing processing after timeliness, cryogenic temperature is-100 ° of C, and the time is 3.5h; Eliminate retained austenite;
(7) then roughly grind chuck, after corase grind, surplus is 0.1mm, and carry out Ageing Treatment afterwards, aging temp is 120 ° of C, and the time is 12h;
(8) carry out freezing processing after timeliness, cryogenic temperature is-70C °, and the time is 2h.
Embodiment two:
Workpiece is carried out annealing process, workpiece is heated to 500 ° of C-600 ° of C, cools to normal temperature with the furnace; Workpiece is machined successively, Milling Machining and pincers processing; Then workpiece is heat-treated; Roughly grind again; Then workpiece is heat-treated; Finally carry out fine grinding to finished product.
Heat treatment step is as follows:
(1) first after turn-milling cutting by workpiece Ageing Treatment 12h under 180 ° of C;
(2) be then cooled to normal temperature, then quench, hardening heat is 820 ° of C-860 ° of C, and the time is 45minmin, then vertically puts into cooling fluid and to quench 3min;
(3) then workpiece entirety is carried out tempering, comprise clamping part, elastic portion and threaded portion, temperature 280 ° of C, the time is 130min, makes workpiece integral hardness reach HRC62;
(4) again the elastic portion of workpiece and threaded portion are carried out tempering, temperature 400 ° of C, time 130min, make elastic portion and threaded portion hardness reach HRC45;
(5) carry out Ageing Treatment after tempering, aging temp is 140 ° of C, and the time is 8h;
(6) carry out freezing processing after timeliness, cryogenic temperature is-110 ° of C, and the time is 3h; Eliminate retained austenite;
(7) then roughly grind chuck, after corase grind, surplus is 0.1mm, and carry out Ageing Treatment afterwards, aging temp is 140 ° of C, and the time is 10h;
(8) carry out freezing processing after timeliness, cryogenic temperature is-90 ° of C, and the time is 2h.
Embodiment three:
Workpiece is carried out annealing process, workpiece is heated to 500 ° of C-600 ° of C, cools to normal temperature with the furnace; Workpiece is machined successively, Milling Machining and pincers processing; Then workpiece is heat-treated; Roughly grind again; Then workpiece is heat-treated; Finally carry out fine grinding to finished product.
[0020] heat treatment step is as follows:
(1) first by workpiece Ageing Treatment 12h under 180 ° of C;
(2) then after turn-milling cutting, be cooled to normal temperature, then quench, hardening heat is 820 ° of C-860 ° of C, and the time is 40min, then vertically puts into cooling fluid and to quench 2-3min;
(3) then workpiece entirety is carried out tempering, comprise clamping part, elastic portion and threaded portion, temperature 260 ° of C, the time is 120min, makes workpiece integral hardness reach HRC60;
(4) again the elastic portion of workpiece and threaded portion are carried out tempering, temperature 380 ° of C, time 120min, make elastic portion and threaded portion hardness reach HRC43;
(5) carry out Ageing Treatment after tempering, aging temp is 130 ° of C, and the time is 8h;
(6) carry out freezing processing after timeliness, cryogenic temperature is-120 ° of C, and the time is 3h; Eliminate retained austenite;
(7) then roughly grind chuck, after corase grind, surplus is 0.1mm, and carry out Ageing Treatment afterwards, aging temp is 130 ° of C, and the time is 12h;
(8) carry out freezing processing after timeliness, cryogenic temperature is-80 ° of C, and the time is 1.5h.
Accompanying drawing illustrates: Fig. 1 is superhigh precision notch grinder special carrier, namely uses the typical part of processing method of the present invention.
Claims (10)
1. improve the processing method of superhigh precision notch grinder special carrier stability, comprise the following steps:
Blanking; Workpiece is carried out annealing process; Workpiece is machined successively, Milling Machining and pincers processing; Then workpiece is heat-treated; Roughly grind again; Then workpiece is heat-treated; Finally refine.
2. it is characterized in that heat treatment step is as follows:
(1) first after turn-milling cutting by workpiece Ageing Treatment 10h-12h under 170-190 ° of C;
(2) be then cooled to normal temperature, then quench, hardening heat is 820 ° of C-860 ° of C, and the time is 35min-45min, then vertically puts into cooling fluid and to quench 2-3min;
(3) then workpiece entirety is carried out tempering, comprise clamping part, elastic portion and threaded portion, temperature 250 ° of C-270 ° of C, the time is 110min-130min, makes workpiece integral hardness reach HRC58-62;
(4) again the elastic portion of workpiece and threaded portion are carried out tempering, temperature 370 ° of C-400 ° of C, the time is 110min-130min, makes elastic portion and threaded portion hardness reach HRC40-45;
(5) carry out Ageing Treatment after tempering, aging temp is 120 ° of C to 140 ° of C, and the time is 7h-8h;
(6) carry out freezing processing after timeliness, cryogenic temperature is-100 ° of C to-120 ° of C, and the time is 2.5h-3.5h; Eliminate retained austenite;
(7) then roughly grind chuck, after corase grind, surplus is 0.1mm, and carry out Ageing Treatment afterwards, aging temp is 120 ° of C-140 ° of C, and the time is 10h-12h;
(8) carry out freezing processing after timeliness, cryogenic temperature is-70C ° to-90 ° C, and the time is 1h-2h.
3. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (1), aging temp is 180 ° of C, and the time is 12h.
4. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (2), the cool time is 40min.
5. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (3), temperature is 260 ° of C, and the time is 2h.
6. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (4), temperature is 380 ° of C, and the time is 2h.
7. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (5), aging temp is 130 ° of C, and the time is 8h.
8. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (6), cryogenic temperature is-120 ° of C, and the time is 3h.
9. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (7), aging temp is 130 ° of C, and the time is 12h.
10. improve the processing method of superhigh precision notch grinder special carrier stability according to claim 1, it is characterized in that: in described heat treatment step (8), cryogenic temperature is-80 ° of C, and the time is 1.5h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410396916.3A CN105364409A (en) | 2014-08-14 | 2014-08-14 | Manufacturing method of special-use chuck for ultra-high precision groove grinding machine |
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| CN201410396916.3A CN105364409A (en) | 2014-08-14 | 2014-08-14 | Manufacturing method of special-use chuck for ultra-high precision groove grinding machine |
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| CN105364409A true CN105364409A (en) | 2016-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514139A (en) * | 2016-11-03 | 2017-03-22 | 山西太钢不锈钢股份有限公司 | Production method for multifunctional spherical clamp |
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| GB167965A (en) * | 1920-08-19 | 1921-08-25 | Rudolf Ferber | Improved manufacture of piston packing rings |
| CN101347890A (en) * | 2008-08-29 | 2009-01-21 | 长安汽车（集团）有限责任公司 | Method for processing internally-expanding clamping fixture head |
| CN103072029A (en) * | 2012-12-25 | 2013-05-01 | 浙江工商职业技术学院 | Clamp head and processing process of clamp head |
| CN103128507A (en) * | 2013-03-04 | 2013-06-05 | 南京紫薇精密机械有限公司 | Method for processing elastic collet with hardness at three different levels |
| CN103170802A (en) * | 2013-03-04 | 2013-06-26 | 南京紫薇精密机械有限公司 | Processing method for improving stability of Gcr15 main shaft |
| CN203109797U (en) * | 2013-03-04 | 2013-08-07 | 南京紫薇精密机械有限公司 | Ultrahigh-precision collet |
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2014
- 2014-08-14 CN CN201410396916.3A patent/CN105364409A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB167965A (en) * | 1920-08-19 | 1921-08-25 | Rudolf Ferber | Improved manufacture of piston packing rings |
| CN101347890A (en) * | 2008-08-29 | 2009-01-21 | 长安汽车（集团）有限责任公司 | Method for processing internally-expanding clamping fixture head |
| CN103072029A (en) * | 2012-12-25 | 2013-05-01 | 浙江工商职业技术学院 | Clamp head and processing process of clamp head |
| CN103128507A (en) * | 2013-03-04 | 2013-06-05 | 南京紫薇精密机械有限公司 | Method for processing elastic collet with hardness at three different levels |
| CN103170802A (en) * | 2013-03-04 | 2013-06-26 | 南京紫薇精密机械有限公司 | Processing method for improving stability of Gcr15 main shaft |
| CN203109797U (en) * | 2013-03-04 | 2013-08-07 | 南京紫薇精密机械有限公司 | Ultrahigh-precision collet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514139A (en) * | 2016-11-03 | 2017-03-22 | 山西太钢不锈钢股份有限公司 | Production method for multifunctional spherical clamp |
| CN106514139B (en) * | 2016-11-03 | 2018-09-14 | 山西太钢不锈钢股份有限公司 | A kind of production method of multi-function ball clamp |
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Application publication date: 20160302 |