CN103990861A - Variable lead worm dividing head rack of gear grinding machine - Google Patents
Variable lead worm dividing head rack of gear grinding machine Download PDFInfo
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- CN103990861A CN103990861A CN201410229688.0A CN201410229688A CN103990861A CN 103990861 A CN103990861 A CN 103990861A CN 201410229688 A CN201410229688 A CN 201410229688A CN 103990861 A CN103990861 A CN 103990861A
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- main shaft
- worm screw
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Abstract
The invention discloses a variable lead worm dividing head rack of a gear grinding machine. The variable lead worm dividing head rack comprises a motor, a coupler, a worm and gear transmission pair and a main shaft. The worm and gear transmission pair comprises a worm and a worm gear meshed with each other. A power output shaft of the motor is coaxially connected with the worm through the coupler, and the worm gear is arranged on the main shaft in a sleeved mode to drive the main shaft to rotate. The other end of the worm is provided with adjusting nuts used for compensating for an axial gap between the worm gear and the worm. According to the variable lead worm dividing head rack, the transmission worm in the worm and gear transmission pair is a variable lead worm, the adjusting nuts are arranged on the two sides of the worm, the gap produced by abrasion of the worm gear and the worm can be adjusted and offset within a certain range, the precision and stability of gear dividing transmission can be improved, and the variable lead worm dividing head rack has large convenience.
Description
Technical field
The present invention relates to a kind of gear grinding machines and become the helical pitch worm indexing headstock, a kind ofly to take servomotor as driving prime mover specifically, employing has a kind of minute tooth driving device that the gap function that disappears becomes the auxiliary driving of helical pitch Worm Wheel System, for formation teeth-grinding, profiled parts is carried out to precision indexing processing.
Background technology
Lathe equipment, as strategic industry, is subject to the great attention of countries in the world all the time.Accurate tooth form machining tool more has the title of " pearl on imperial crown " industry.Gear grinding machines before the nineties in last century are nearly all to adopt generating principle work, and this lathe exists certain problem, as few tooth root is cut etc.In recent years, along with the development of the correlation techniques such as numerical control, profile of tooth precision finishing machine is progressively excessive to forming manufacturing by generating processing, and formation teeth-grinding becomes the developing direction of following roll flute process technology.
The precision indexing of one of the key technology of formation teeth-grinding processing part.A traditional minute tooth motion adopts pure mechanical drive train, complex structure, and precision is low, is difficult to meet the processing request of high class gear part.In recent years, along with the development of Numeric Control Technology, the integrated application of electromechanical integration and detection technique, making high accuracy divide the upgrading of tooth drive technology to improve becomes possibility.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, for the supporting needs of current form of gear tooth shaping process technology, capture formation teeth-grinding equipment part high accuracy and divide tooth this key core technical problem of moving, design a kind of based on servo-drive, the numerically controlled transmission device with the gap function that disappears, thereby the high accuracy that realizes gear part is divided tooth motion, meets the requirement of high class gear part processing.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
Gear grinding machines become a helical pitch worm indexing headstock, comprise motor, shaft coupling, Worm Wheel System pair, main shaft; It is characterized in that: described Worm Wheel System pair comprises intermeshing worm and worm wheel; The power output shaft of described motor is connected with worm screw coaxial line by shaft coupling, and described worm gear set is located on main shaft and drives main shaft to rotate; At the worm screw other end, be provided with adjusting nut, for compensating the end play between worm gear and worm screw.
Described gear grinding machines become the helical pitch worm indexing headstock, it is characterized in that: also comprise casing, described main shaft is bearing in casing with two ends locate mode by taper roll bearing; Vertical direction above main shaft, motor is directly connected by shaft coupling and worm screw, and worm screw is bearing in casing with two ends fixed form by taper roll bearing; Worm gear sheathed on main shaft is meshed with worm screw.
As preferred version, described gear grinding machines become the helical pitch worm indexing headstock, it is characterized in that: described worm screw is for becoming helical pitch worm screw, and the axial tooth thickness of worm screw passes through along its axis and increases according to a certain percentage or reduce, the tooth thickness of wormwheel being meshed with change helical pitch worm screw all equates.
As preferred version, described gear grinding machines become the helical pitch worm indexing headstock, it is characterized in that: described main shaft tail end is provided with encoder.
Beneficial effect: gear grinding machines provided by the invention become the helical pitch worm indexing headstock, have the following advantages: 1, servomotor, through zero-clearance shaft coupling and worm screw direct connection, is realized deceleration transmission by worm couple, increase moment of torsion, dwindle error; 2, at change helical pitch worm screw two ends, adjusting nut is housed, thereby can adjusts worm position after worm gear wearing and tearing, remain tight mesh state, thereby improve minute tooth kinematic accuracy and stability.Adopt and become helical pitch worm shaft to the gap that disappears, avoided adjusting the impact that worm and gear centre-to-centre spacing is brought, simple installation, transmission accuracy is high, good stability; 3, main shaft tail end is provided with high-precision encoder, directly the actual angle of revolution of main shaft is detected, thereby can be compensated and further be improved a minute tooth kinematic accuracy by system feedback, forms closed-loop control, and indexing accuracy is high; 4, adopt servo-drive, can realize automatic indexing at any angle, highly versatile.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 be in Fig. 1 A-A to cutaway view;
Fig. 3 is the profile of tooth schematic diagram of worm screw in the embodiment of the present invention.
In figure: casing 1, motor 2, shaft coupling 3, worm screw 4, worm gear 5, taper roll bearing 6, adjusting nut 7, main shaft 8, taper roll bearing 9, encoder 10.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1 to Figure 3, a kind of gear grinding machines become the helical pitch worm indexing headstock, comprise casing 1, motor 2, shaft coupling 3, Worm Wheel System pair, main shaft 8; Worm Wheel System pair comprises intermeshing worm screw 4 and worm gear 5; The power output shaft of described motor 2 is connected with worm screw 4 coaxial lines by shaft coupling 3, and described worm gear 5 is set on main shaft 8 and drives main shaft 8 to rotate; At worm screw 4 other ends, be provided with adjusting nut 7, for compensating the end play between worm gear and worm screw.By axial adjustment nut 7, can compensate within the specific limits the gap that worm and gear wearing and tearing produce.
Described gear grinding machines become the helical pitch worm indexing headstock, it is characterized in that: also comprise casing 1, described main shaft 8 is bearing in casing 1 with two ends locate mode by taper roll bearing 9; Vertical direction above main shaft 8, motor 2 is directly connected by shaft coupling 3 and worm screw 4, and worm screw 4 is bearing in casing 1 with two ends fixed form by taper roll bearing 6; Worm gear 5 sheathed on main shaft 8 is meshed with worm screw 4, transmits motion to main shaft.
Described gear grinding machines become the helical pitch worm indexing headstock, it is characterized in that: described worm screw 4 is for becoming helical pitch worm screw, the axial tooth thickness of worm screw 4 passes through and increases according to a certain percentage or reduce along its axis, and the tooth thickness of wormwheel being meshed with change helical pitch worm screw all equates.
As shown in Figure 2, as preferred version, described gear grinding machines become the helical pitch worm indexing headstock, it is characterized in that: described main shaft 8 tail ends are coaxially equipped with high-precision encoder 10, by connector and main shaft 8, are connected, and realize the direct-detection to main shaft 8 angles of revolution.Main shaft 8 front ends are shaped with the part such as mohs tapered bore and clamp mounting interface, for mounting parts fixture etc.
As shown in Figure 3, worm screw 4 adopts and becomes helical pitch structure, after a pair of change helical pitch worm gear running for a long time, because causing flank engagement sideshake to strengthen, wearing and tearing destroyed the stationarity of moving, now by unscrewing a side adjusting nut 7, screw opposite side adjusting nut simultaneously, make worm screw 4 along one section of axial distance of direction displacement of transverse tooth thickness attenuate, the adjusting nut 7 of unscrewing before screwing subsequently, can make worm tooth-surface and the worm gear flank of tooth be close to, reduce or eliminate meshing backlass completely, recovering accuracy and the stationarity of motion.
Gear grinding machines provided by the invention become the helical pitch worm indexing headstock, have the following advantages: 1, servomotor connects shaft coupling and worm screw direct connection through zero-clearance, by worm couple, realizes deceleration transmission, increase moment of torsion, dwindle error; 2, at change helical pitch worm screw two ends, adjusting nut is housed, thereby can adjusts worm position after worm gear wearing and tearing, remain tight mesh state, thereby improve minute tooth kinematic accuracy and stability.Adopt and become helical pitch worm shaft to the gap that disappears, avoided adjusting the impact that worm and gear centre-to-centre spacing is brought, simple installation, transmission accuracy is high, good stability; 3, main shaft tail end is provided with high-precision encoder, directly the actual angle of revolution of main shaft is detected, thereby can be compensated and further be improved a minute tooth kinematic accuracy by system feedback, forms closed-loop control, and indexing accuracy is high; 4, adopt servo-drive, can realize automatic indexing at any angle, highly versatile.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. gear grinding machines become a helical pitch worm indexing headstock, comprise motor, shaft coupling, Worm Wheel System pair, main shaft; It is characterized in that: described Worm Wheel System pair comprises intermeshing worm and worm wheel; The power output shaft of described motor is connected with worm screw coaxial line by shaft coupling, and described worm gear set is located on main shaft and drives main shaft to rotate; At the worm screw other end, be provided with adjusting nut, for compensating the end play between worm gear and worm screw.
2. gear grinding machines according to claim 1 become the helical pitch worm indexing headstock, it is characterized in that: also comprise casing, described main shaft is bearing in casing with two ends locate mode by taper roll bearing; Vertical direction above main shaft, motor is directly connected by shaft coupling and worm screw, and worm screw is bearing in casing with two ends fixed form by taper roll bearing; Worm gear sheathed on main shaft is meshed with worm screw.
3. gear grinding machines according to claim 1 and 2 become the helical pitch worm indexing headstock, it is characterized in that: described worm screw is for becoming helical pitch worm screw, the axial tooth thickness of worm screw passes through and increases according to a certain percentage or reduce along its axis, and the tooth thickness of wormwheel being meshed with change helical pitch worm screw all equates.
4. gear grinding machines according to claim 1 and 2 become the helical pitch worm indexing headstock, it is characterized in that: described main shaft tail end is provided with encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229688.0A CN103990861A (en) | 2014-05-28 | 2014-05-28 | Variable lead worm dividing head rack of gear grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229688.0A CN103990861A (en) | 2014-05-28 | 2014-05-28 | Variable lead worm dividing head rack of gear grinding machine |
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| CN103990861A true CN103990861A (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410229688.0A Pending CN103990861A (en) | 2014-05-28 | 2014-05-28 | Variable lead worm dividing head rack of gear grinding machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221688A (en) * | 2015-10-31 | 2016-01-06 | 重庆机床(集团)有限责任公司 | A kind of gear hobbing machine Changeable Lead screw drive mechanism and utilize this mechanism to eliminate the method for index worm gear pair sideshake |
| CN109202186A (en) * | 2018-10-26 | 2019-01-15 | 南京康尼精密机械有限公司 | A kind of gear grinding machines helical angle rotating shaft spring balance device |
| CN109604740A (en) * | 2018-12-26 | 2019-04-12 | 益阳康益机械发展有限公司 | Internal messing positive motion chain tumbling mill deceleration Pulley mechanism |
| CN109623047A (en) * | 2018-12-25 | 2019-04-16 | 益阳康益机械发展有限公司 | The vertical tumbling mill of internal messing positive motion chain is driven telescoping mechanism |
| CN109794653A (en) * | 2018-12-27 | 2019-05-24 | 益阳康益机械发展有限公司 | External toothing positive motion chain tumbling mill deceleration Pulley mechanism |
| CN109909821A (en) * | 2019-04-08 | 2019-06-21 | 苏州振吴电炉有限公司 | A kind of furnace grinding device for inner surface and its polishing process |
| CN114867993A (en) * | 2019-12-17 | 2022-08-05 | 美蓓亚三美株式会社 | Absolute encoder |
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| US20060257221A1 (en) * | 2005-05-12 | 2006-11-16 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Internal gear shaving machine |
| CN201361751Y (en) * | 2009-03-20 | 2009-12-16 | 南京山能机电工程有限公司 | Two-section combined worm index actuating device of gear grinding machine |
| CN101695775A (en) * | 2009-11-03 | 2010-04-21 | 大连理工大学 | High-precision end-tooth automatic dividing device for gear grinding machine |
| CN202527804U (en) * | 2012-03-19 | 2012-11-14 | 浙江嘉力宝精机股份有限公司 | Twin-worm automatic anti-backlash driving indexing workbench of gear grinding machine |
| CN203875429U (en) * | 2014-05-28 | 2014-10-15 | 南京工程学院 | Variable-lead worm dividing head frame for gear grinding machine |
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2014
- 2014-05-28 CN CN201410229688.0A patent/CN103990861A/en active Pending
Patent Citations (5)
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| US20060257221A1 (en) * | 2005-05-12 | 2006-11-16 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Internal gear shaving machine |
| CN201361751Y (en) * | 2009-03-20 | 2009-12-16 | 南京山能机电工程有限公司 | Two-section combined worm index actuating device of gear grinding machine |
| CN101695775A (en) * | 2009-11-03 | 2010-04-21 | 大连理工大学 | High-precision end-tooth automatic dividing device for gear grinding machine |
| CN202527804U (en) * | 2012-03-19 | 2012-11-14 | 浙江嘉力宝精机股份有限公司 | Twin-worm automatic anti-backlash driving indexing workbench of gear grinding machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221688A (en) * | 2015-10-31 | 2016-01-06 | 重庆机床(集团)有限责任公司 | A kind of gear hobbing machine Changeable Lead screw drive mechanism and utilize this mechanism to eliminate the method for index worm gear pair sideshake |
| CN109202186A (en) * | 2018-10-26 | 2019-01-15 | 南京康尼精密机械有限公司 | A kind of gear grinding machines helical angle rotating shaft spring balance device |
| CN109623047A (en) * | 2018-12-25 | 2019-04-16 | 益阳康益机械发展有限公司 | The vertical tumbling mill of internal messing positive motion chain is driven telescoping mechanism |
| CN109604740A (en) * | 2018-12-26 | 2019-04-12 | 益阳康益机械发展有限公司 | Internal messing positive motion chain tumbling mill deceleration Pulley mechanism |
| CN109794653A (en) * | 2018-12-27 | 2019-05-24 | 益阳康益机械发展有限公司 | External toothing positive motion chain tumbling mill deceleration Pulley mechanism |
| CN109909821A (en) * | 2019-04-08 | 2019-06-21 | 苏州振吴电炉有限公司 | A kind of furnace grinding device for inner surface and its polishing process |
| CN114867993A (en) * | 2019-12-17 | 2022-08-05 | 美蓓亚三美株式会社 | Absolute encoder |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140820 |