CN104128759A - Lathe spindle machining process beneficial to spindle surface hardness - Google Patents
Lathe spindle machining process beneficial to spindle surface hardness Download PDFInfo
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- CN104128759A CN104128759A CN201410355045.0A CN201410355045A CN104128759A CN 104128759 A CN104128759 A CN 104128759A CN 201410355045 A CN201410355045 A CN 201410355045A CN 104128759 A CN104128759 A CN 104128759A
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- lathe
- quenching
- surface hardness
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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Abstract
The invention discloses a lathe spindle machining process beneficial to spindle surface hardness. The lathe spindle machining process includes the steps of rough machining, semi-finish machining and finish machining which are carried out in sequence. The rough machining includes the procedures of blank material preparation, long and short cutting, outer ring and end face rough turning, center hole drilling, forging and normalizing which are carried out in sequence; the semi-finish machining includes the procedures of thermal treatment and semi-finish turning which are carried out in sequence; the finish machining includes the procedures of local high-frequency quenching, finish turning and outer surface ground finish which are carried out in sequence; blanks are made of No.45 steel. According to the lathe spindle machining process, spindle machining efficiency is high, the situation that dimensional stability and abrasive resistance of obtained spindles can be maintained for a long time is facilitated, and machining precision of a lathe is facilitated.
Description
Technical field
The present invention relates to lathe parts manufacturing process, particularly relate to a kind of lathe spindle processing technology that is conducive to main spindle table surface hardness.
Background technology
Main shaft is the vitals of lathe, and concerning high speed precision lathe, lathe turning machining accuracy depends on the precision of axis system to a great extent, and the precision of axis system is subject to the impact of geometric accuracy, Static and dynamic rigidity and the hot property of axis system.Therefore, the precision that how to improve axis system in lathe arranges is the key of design of lathe, and lathe spindle rotating accuracy is one of main precision control index of lathe, directly affects machining accuracy and the surface roughness of part to be processed.The manufacturing process of machine tool chief axis has crucial impact to the quality of main shaft, how further to optimize lathe spindle manufacturing process, is the important channel of improving lathe workpiece crudy, ensureing part qualification rate.
Summary of the invention
Manufacturing process for above-mentioned machine tool chief axis has crucial impact to the quality of main shaft, how further to optimize lathe spindle manufacturing process, be the problem that improves lathe workpiece crudy, ensures the important channel of part qualification rate, the invention provides a kind of lathe spindle processing technology that is conducive to main spindle table surface hardness.
For the problems referred to above, a kind of lathe spindle processing technology that is conducive to main spindle table surface hardness provided by the invention reaches goal of the invention by following technical essential: a kind of lathe spindle processing technology that is conducive to main spindle table surface hardness, comprise roughing in sequence, semifinishing and fine finishining, described roughing comprises that blank is got the raw materials ready in sequence, length cutting, rough turn cylindrical and end face, centre bore drill, forging, normalizing;
Described semifinishing comprises heat treatment in sequence and half finish turning;
Described fine finishining comprises local high-frequency quenching in sequence, finish turning, outer surface grinding;
Blank material is 45# steel, described heat treatment comprises quench hot and lonneal in sequence, the temperature of described quench hot is any number in 820 DEG C to 850 DEG C, the cooling procedure of quench hot comprises quenching and two processes of Slow cooling, described quench step is to adopt saline solution that blank is cooled to any number in 190 DEG C to 200 DEG C, described Slow cooling is that the blank that quenching is obtained adopts air cooling or oil cooling, the temperature of described lonneal is any number in 160 DEG C to 200 DEG C, the lonneal time is not less than 1.5h, between described blank blanking and machining operation, also comprise and forge step.。
Further technical scheme is:
In described roughing, semifinishing and fine finishining, include chamfering process.
Described centre bore drills and comprises that isometrical blind hole drills with follow-up and on the basis of blind hole, carry out taper hole turning.
Described high-frequency quenching is the quenching frequency that adopts 80KHz-100KHz, and the follow-up tempering step that is also provided with 180 DEG C-200 DEG C of high-frequency quenching.
The present invention has following beneficial effect:
1, lathe spindle processing technology provided by the invention, by the roughing, semifinishing and the large step of fine finishining three that arrange, can effectively reduce the cutting output of accurately controlling cutting in main shaft manufacture process for size, is conducive to improve the working (machining) efficiency of main shaft.
2, by the roughing arranging, semifinishing and the large step of fine finishining three are also chosen rational process control parameter, the main shaft hardness obtaining can promote 5HRC on prior art adopts the basis of equivalent material, the wearability that makes to obtain main shaft is 2 times of existing equivalent material main shaft, the alignment of shafts toughness simultaneously obtaining is strong, shock resistance is good, high-frequency quenching has effectively improved the wearability on main shaft surface, particularly be conducive to the position that axle journal or other may produce relative friction, more than be arranged so that the main shaft obtaining by this method can keep its dimensional stability for a long time, be conducive to the machining accuracy of lathe.
3, by the Technology for Heating Processing arranging in roughing operation, make in heat treatment process the surperficial full hardening deepness of main shaft can arrive 6mm even more, this is convenient to realize and still has certain thickness through hardening layer completing main shaft surface after machining, be conducive to the rigidity of main shaft and the wearability of outer surface, be convenient to keep the long-term stability of rotating of main shaft.
4, length cutting, rough turn cylindrical and end face machining operation and forging, normalizing heat treatment step have been adjusted compared to prior art, the thickness that the adjustment of above operation is stripped from the production process of main shaft cementation zone in the cutting of size, surface roughness or grinding is few, the thickness of the main shaft cementation zone that is conducive to obtain, thereby intensity, rigidity, wearability and the shock resistance of optimization main shaft.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but structure of the present invention is not limited only to following examples.
Embodiment 1:
A kind of lathe spindle processing technology that is conducive to main spindle table surface hardness, comprise roughing in sequence, semifinishing and fine finishining, described roughing comprises that blank is got the raw materials ready in sequence, length cutting, rough turn cylindrical and end face, centre bore drill, forging, normalizing;
Described semifinishing comprises heat treatment in sequence and half finish turning;
Described fine finishining comprises local high-frequency quenching in sequence, finish turning, outer surface grinding;
Blank material is 45# steel, described heat treatment comprises quench hot and lonneal in sequence, the temperature of described quench hot is any number in 820 DEG C to 850 DEG C, the cooling procedure of quench hot comprises quenching and two processes of Slow cooling, described quench step is to adopt saline solution that blank is cooled to any number in 190 DEG C to 200 DEG C, described Slow cooling is that the blank that quenching is obtained adopts air cooling or oil cooling, the temperature of described lonneal is any number in 160 DEG C to 200 DEG C, the lonneal time is not less than 1.5h, between described blank blanking and machining operation, also comprise and forge step.。
Lathe spindle processing technology provided by the invention, by the roughing, semifinishing and the large step of fine finishining three that arrange, can effectively reduce the cutting output of accurately controlling cutting in main shaft manufacture process for size, is conducive to improve the working (machining) efficiency of main shaft.
By the roughing arranging, semifinishing and the large step of fine finishining three are also chosen rational process control parameter, the main shaft hardness obtaining can promote 5HRC on prior art adopts the basis of equivalent material, the wearability that makes to obtain main shaft is 2 times of existing equivalent material main shaft, the alignment of shafts toughness simultaneously obtaining is strong, shock resistance is good, high-frequency quenching has effectively improved the wearability on main shaft surface, particularly be conducive to the position that axle journal or other may produce relative friction, more than be arranged so that the main shaft obtaining by this method can keep its dimensional stability for a long time, be conducive to the machining accuracy of lathe.
By the Technology for Heating Processing arranging in roughing operation, make in heat treatment process the surperficial full hardening deepness of main shaft can arrive 6mm even more, this is convenient to realize and still has certain thickness through hardening layer completing main shaft surface after machining, be conducive to the rigidity of main shaft and the wearability of outer surface, be convenient to keep the long-term stability of rotating of main shaft.
Length cutting, rough turn cylindrical and end face machining operation and forging, normalizing heat treatment step are adjusted compared to prior art, the thickness that the adjustment of above operation is stripped from the production process of main shaft cementation zone in the cutting of size, surface roughness or grinding is few, the thickness of the main shaft cementation zone that is conducive to obtain, thereby intensity, rigidity, wearability and the shock resistance of optimization main shaft.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, in described roughing, semifinishing and fine finishining, includes chamfering process.
For ease of drilling of taper hole, drill efficiency to improve taper hole, described centre bore drills and comprises that isometrical blind hole drills with follow-up and on the basis of blind hole, carry out taper hole turning.
For ease of obtaining suitable case hardness and the depth of quenching, described high-frequency quenching is the quenching frequency that adopts 80KHz-100KHz, and the follow-up tempering step that is also provided with 180 DEG C-200 DEG C of high-frequency quenching.
Above content is the further description of the present invention being done in conjunction with concrete preferred embodiment, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other embodiments that draw under technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (4)
1. one kind is conducive to the lathe spindle processing technology of main spindle table surface hardness, comprise roughing in sequence, semifinishing and fine finishining, it is characterized in that, described roughing comprises that blank is got the raw materials ready in sequence, length cutting, rough turn cylindrical and end face, centre bore drill, forging, normalizing;
Described semifinishing comprises heat treatment in sequence and half finish turning;
Described fine finishining comprises local high-frequency quenching in sequence, finish turning, outer surface grinding;
Blank material is 45# steel, described heat treatment comprises quench hot and lonneal in sequence, the temperature of described quench hot is any number in 820 DEG C to 850 DEG C, the cooling procedure of quench hot comprises quenching and two processes of Slow cooling, described quench step is to adopt saline solution that blank is cooled to any number in 190 DEG C to 200 DEG C, described Slow cooling is that the blank that quenching is obtained adopts air cooling or oil cooling, the temperature of described lonneal is any number in 160 DEG C to 200 DEG C, the lonneal time is not less than 1.5h, between described blank blanking and machining operation, also comprise and forge step.
2. a kind of lathe spindle processing technology that is conducive to main spindle table surface hardness according to claim 1, is characterized in that, in described roughing, semifinishing and fine finishining, includes chamfering process.
3. a kind of lathe spindle processing technology that is conducive to main spindle table surface hardness according to claim 1, is characterized in that, described centre bore drills and comprises that isometrical blind hole drills with follow-up and on the basis of blind hole, carry out taper hole turning.
4. a kind of lathe spindle processing technology that is conducive to main spindle table surface hardness according to claim 1, is characterized in that, described high-frequency quenching is the quenching frequency that adopts 80KHz-100KHz, and the follow-up tempering step that is also provided with 180 DEG C-200 DEG C of high-frequency quenching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410355045.0A CN104128759A (en) | 2014-07-24 | 2014-07-24 | Lathe spindle machining process beneficial to spindle surface hardness |
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| CN201410355045.0A CN104128759A (en) | 2014-07-24 | 2014-07-24 | Lathe spindle machining process beneficial to spindle surface hardness |
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| CN104128759A true CN104128759A (en) | 2014-11-05 |
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| CN201410355045.0A Pending CN104128759A (en) | 2014-07-24 | 2014-07-24 | Lathe spindle machining process beneficial to spindle surface hardness |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708289A (en) * | 2015-01-30 | 2015-06-17 | 柳州市俊杰汽配制造有限公司 | Car transmission shaft machining technology |
| CN106112418A (en) * | 2016-08-30 | 2016-11-16 | 沈阳三科水力机械制造有限公司 | The processing technique of PH stainless steel pump shaft |
| CN106271463A (en) * | 2016-09-29 | 2017-01-04 | 天津机电职业技术学院 | A kind of processing method of index cam |
| CN112719800A (en) * | 2019-09-30 | 2021-04-30 | 福州力王电子科技有限公司 | Machining method for rotating main shaft of high-precision handheld grinding engraving machine |
| CN114012370A (en) * | 2021-12-16 | 2022-02-08 | 湖北奔阳汽车零部件有限公司 | Machining process of upper cover plate of commercial vehicle, upper cover plate and commercial vehicle |
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| CN102029504A (en) * | 2009-09-30 | 2011-04-27 | 成都成量工具集团有限公司 | Machining technology of inner cone hole of main shaft |
| CN102443744A (en) * | 2011-12-05 | 2012-05-09 | 无锡市东方抗磨工程有限公司 | Double-medium quenching heat treatment process for high-medium carbon alloy steel |
| CN102501035A (en) * | 2011-10-12 | 2012-06-20 | 南京金鑫传动设备有限公司 | Quenching and tempering method in tooth punching process of gear with medium-hard tooth surface |
| 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 |
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2014
- 2014-07-24 CN CN201410355045.0A patent/CN104128759A/en active Pending
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| CN102029504A (en) * | 2009-09-30 | 2011-04-27 | 成都成量工具集团有限公司 | Machining technology of inner cone hole of main shaft |
| CN102501035A (en) * | 2011-10-12 | 2012-06-20 | 南京金鑫传动设备有限公司 | Quenching and tempering method in tooth punching process of gear with medium-hard tooth surface |
| CN102443744A (en) * | 2011-12-05 | 2012-05-09 | 无锡市东方抗磨工程有限公司 | Double-medium quenching heat treatment process for high-medium carbon alloy steel |
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| 刘守勇: "《机械制造工艺与机床夹具》", 31 July 1994 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708289A (en) * | 2015-01-30 | 2015-06-17 | 柳州市俊杰汽配制造有限公司 | Car transmission shaft machining technology |
| CN106112418A (en) * | 2016-08-30 | 2016-11-16 | 沈阳三科水力机械制造有限公司 | The processing technique of PH stainless steel pump shaft |
| CN106112418B (en) * | 2016-08-30 | 2019-03-29 | 沈阳三科核电设备制造股份有限公司 | The processing technology of PH stainless steel pump shaft |
| CN106271463A (en) * | 2016-09-29 | 2017-01-04 | 天津机电职业技术学院 | A kind of processing method of index cam |
| CN112719800A (en) * | 2019-09-30 | 2021-04-30 | 福州力王电子科技有限公司 | Machining method for rotating main shaft of high-precision handheld grinding engraving machine |
| CN114012370A (en) * | 2021-12-16 | 2022-02-08 | 湖北奔阳汽车零部件有限公司 | Machining process of upper cover plate of commercial vehicle, upper cover plate and commercial vehicle |
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Application publication date: 20141105 |