CN201720557U - Double-piece combined worm helicoidal gear of gear grinding machine - Google Patents
Double-piece combined worm helicoidal gear of gear grinding machine Download PDFInfo
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- CN201720557U CN201720557U CN2010202622868U CN201020262286U CN201720557U CN 201720557 U CN201720557 U CN 201720557U CN 2010202622868 U CN2010202622868 U CN 2010202622868U CN 201020262286 U CN201020262286 U CN 201020262286U CN 201720557 U CN201720557 U CN 201720557U
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- worm
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Abstract
A double-piece combined worm helicoidal gear of gear grinding machine comprises a casing (4), and a gear worm transmission pair, a coupling (5), a motor (6) and a main shaft (2) disposed in the casing (4); the motor (6) drives a transmission device which drives the main shaft (2) by the coupling (5) and the gear worm transmission pair; the worm wheel (8) in the gear worm transmission pair is a combined structure including a main and an accessory piece, and is divided into two symmetrical parts along the tooth thickness direction; the main worm wheel (8-4) is sleeved outside the main shaft (2) by the inner hole; the stepped outer edge of the main worm wheel (8-4) is in mounted with clearance fit with the inner hole of the accessory worm wheel (8-1); and a circumferential extension spring resilient clearance eliminating means is disposed between the main worm wheel (8-4) and the accessory worm wheel (8-1). The utility model is a helicoidal gear based on servo driving and digital control, realizes highly accurate helix angle setting for helical gear parts, and meets the tooth directional precision requirement of high accurate helical gear parts.
Description
The utility model relates to a kind of gear grinding machines screw transmission device, be specifically a kind of be to drive prime mover with the servomotor, employing has a kind of helicoidal gear of automatic anti-backlash function worm and gear transmission transmission, is used for formation teeth-grinding helical gear (helical gear) is accurately set helical angle automatically.
Background technology
The lathe equipment is subjected to the great attention of countries in the world as strategic industry all the time.The accurate tooth form machining tool more has the title of " pearl on the imperial crown " industry.Gear grinding machines before the nineties in last century nearly all are to adopt generating principle work, and there is certain problem in this lathe, cut as few tooth root etc.In recent years, along with development of technologies such as numerical controls, progressively by generating processing to forming process processing excessively, formation teeth-grinding becomes the developing direction of following roll flute process technology to the profile of tooth precision finishing machine.
One of key technology of formation teeth-grinding helical gear processing is helical angle control.Pure mechanical drive train is adopted in traditional screw, complex structure, and precision is low, is difficult to satisfy the requirement of high accuracy beveled gear teeth to precision.In recent years, along with development of numerical control (NC) technology, the integrated application of electromechanical integration and detection technique, making the upgrading of high-precision spiral drive technology improve becomes possibility.
Summary of the invention
[0004] the purpose of this utility model is at the supporting needs of present form of gear tooth shaping process technology, capture this key core technical problem of formation teeth-grinding equipment part high-precision spiral transmission, design a kind of based on servo-drive, numerically controlled automatic anti-backlash helicoidal gear, thereby the high-precision spiral angle of realizing the helical teeth wheel-class parts is set, and satisfies the teeth directional required precision of high accuracy helical gear part.
The technical solution of the utility model is:
A kind of gear grinding machines biplate combination worm gear helicoidal gear, comprise casing and be located at the interior worm and gear transmission of casing, shaft coupling, motor, main shaft, described transmission device is with motor-driven, pass through shaft coupling, the worm and gear transmission drives main shaft, it is characterized in that the transmission worm gear is main in the described worm and gear transmission, secondary biplate combining structure, the transmission worm gear is at tooth portion thickness direction symmetry separated into two parts, wherein the inner hole sleeve of main worm gear is contained in the outside of main shaft, the ladder outer of main worm gear and the endoporus of secondary worm gear are installed with matched in clearance, are provided with circumferential extension spring elastic gap-eliminating device between main worm gear and secondary worm gear.
Main shaft of the present utility model is bearing in the casing with the two ends locate mode by bearing, at its vertical direction place worm screw is housed, worm screw by bearing with the two ends location and installation in casing, worm screw and motor directly link by shaft coupling, the transmission worm gear on the main shaft is meshed with worm screw.
The ladder end face of main worm gear of the present utility model is equipped with back-up ring.
Circumferential extension spring elastic gap-eliminating device of the present utility model comprises spiral stretching spring, first spring abutment and second spring abutment, a plurality of spiral stretching springs are installed in the lateral surface of main worm gear and/or secondary worm gear respectively, the two ends of each spiral stretching spring link to each other with separately first spring abutment, second spring abutment respectively, and each first spring abutment, second spring abutment link to each other with corresponding main worm gear and/or secondary worm gear respectively by screw thread.
The afterbody of main shaft of the present utility model is equipped with encoder.
The beneficial effects of the utility model:
1, the utility model adopts servo-drive, digital control technology, can realize automatic setting at any angle, highly versatile.
2, the utility model is provided with circumferential elastic gap-eliminating device between major and minor two worm gears, thereby can dynamic auto adjustment relative position with worm engaging the time, remain no gap engagement, eliminate the influence that the worm and gear transmission is made sideshake, the transmission accuracy height, good stability.
3, the utility model main shaft afterbody is equipped with high-precision encoder, directly the actual angle of revolution of main shaft is detected, and divides the tooth kinematic accuracy thereby can further improve by the system feedback compensation, forms closed-loop control, the indexing accuracy height.
4, servomotor connects shaft coupling and worm screw direct connection through zero-clearance, realizes deceleration transmission by worm couple, increases moment of torsion, dwindles error.
Description of drawings
Fig. 1 is the utility model motor-driven part cutaway view.
Fig. 2 is the cutaway view of the utility model main axle structure.
Fig. 3 is the cutaway view of the utility model transmission worm gear.
Fig. 4 is the axial view of the utility model transmission worm gear.
Among the figure: 1, work top; 2, main shaft; 3, worm screw; 4, casing; 5, shaft coupling;
6, motor; 7, high-precision encoder; 8, transmission worm gear; 8-1, secondary worm gear; 8-2, back-up ring; 8-3, screw; 8-4, main worm gear; 8-5, first spring abutment; 8-6, extension spring;
8-7, second spring abutment.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Shown in Fig. 1-4, this transmission device is mainly by casing 4 be located at worm and gear transmission in the casing 4, shaft coupling 5, motor 6, main shaft 2 etc. and form, drive with motor 6, drive main shaft 2 by shaft coupling 5, worm and gear transmission and realize the main shaft gyration motion, transmission worm gear 8 adopts major and minor biplate combining structure in the described worm and gear transmission, is provided with circumferential extension spring elastic gap-eliminating device between main worm gear 8-4 and secondary worm gear 8-1.
Main shaft 2 is bearing in the casing 4 with the two ends locate mode by taper roll bearing, at a distance of certain centre-to-centre spacing place worm screw 3 is housed in its vertical direction, worm screw 3 is bearing in the casing 4 with the two ends locate mode by taper roll bearing equally, motor 6 and worm screw 3 coaxial installations, and directly link by zero-clearance shaft coupling 5, transmission worm gear 8 on the main shaft 2 is meshed with worm screw 3, thereby the motion of motor 6 can be delivered to main shaft 2.
Transmission worm gear 8 adopts major and minor biplate combining structure, transmission worm gear 8 is divided into major and minor two parts by the normal engaged requirement in tooth portion thickness direction symmetry, the installation that matches with main shaft 2 of the endoporus of wherein main worm gear 8-4, and the endoporus of outer garden of its ladder and secondary worm gear 8-1 is by closely installing movingly, and back-up ring 8-2 is housed to control the end play between main worm gear 8-4 and secondary worm gear 8-1 at the ladder end face of main worm gear 8-4, can keep the composite entity precision of main worm gear 8-4 and secondary worm gear 8-1 like this.
The lateral surface of main worm gear 8-4 and/or secondary worm gear 8-1 is equipped with a plurality of spiral stretching spring 8-6, the two ends of each spiral stretching spring 8-6 link to each other with separately the first spring abutment 8-5, the second spring abutment 8-7 respectively, and each the first spring abutment 8-5, second spring abutment 8-7 link to each other with main worm gear 8-4 and/or secondary worm gear 8-1 respectively by screw thread.The active force of extension spring 8-6 passes to main worm gear 8-4 and/or secondary worm gear 8-1 by the first spring abutment 8-5, the second spring abutment 8-7 like this, makes the gear teeth between major and minor worm gear that the trend of relative dislocation be arranged all the time.When the worm and gear engaged transmission, because when the foozle of worm and gear itself causes back lash or back lash to change, under the spring force effect, will produce between main worm gear 8-4 and secondary worm gear 8-1 relative to circumferential trace and rotate, thereby change the effective space width between the major-minor worm gear, adapt with current worm engaging tooth, thereby realize dynamic zero-clearance transmission.
Major and minor worm gear lateral surface extension spring 8-6 installs quantity and can select in certain limit, by changing the actual installation quantity of extension spring 8-6, can change the circumferential pretightning force between major and minor worm gear, thus the control transmission stiffness.
The coaxial high-precision encoder 7 that is equipped with of main shaft 2 afterbodys.Link by connector and main shaft 2, realize direct detection main shaft 2 angles of revolution.Main shaft 2 front ends are shaped on the mohs tapered bore interface, are used for Installation and Debugging etc.
The utility model adopts servo-drive, digital control technology, and by worm and gear transmission transmission main shaft 2, high-precision encoder 7 directly detects main shaft 2 outputs, realizes the motion of main shaft 2 high-precision spirals.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (5)
1. a gear grinding machines biplate makes up the worm gear helicoidal gear, comprise casing (4) and be located at the interior worm and gear transmission of casing (4), shaft coupling (5), motor (6), main shaft (2), described transmission device drives with motor (6), by shaft coupling (5), the worm and gear transmission drives main shaft (2), it is characterized in that transmission worm gear (8) is main in the described worm and gear transmission, secondary biplate combining structure, transmission worm gear (8) is at tooth portion thickness direction symmetry separated into two parts, the inner hole sleeve of wherein main worm gear (8-4) is contained in the outside of main shaft (2), the endoporus of the ladder outer of main worm gear (8-4) and secondary worm gear (8-1) is installed with matched in clearance, is provided with circumferential extension spring elastic gap-eliminating device between main worm gear (8-4) and secondary worm gear (8-1).
2. gear grinding machines biplate combination worm gear helicoidal gear according to claim 1, it is characterized in that described main shaft (2) is bearing in the casing (4) with the two ends locate mode by bearing, at its vertical direction place worm screw (3) is housed, worm screw (3) by bearing with the two ends location and installation in casing (4), worm screw (3) directly links by shaft coupling (5) with motor (6), and the transmission worm gear (8) on the main shaft (2) is meshed with worm screw (3).
3. gear grinding machines biplate combination worm gear helicoidal gear according to claim 1 is characterized in that the ladder end face of described main worm gear (8-4) is equipped with back-up ring (8-2).
4. gear grinding machines biplate combination worm gear helicoidal gear according to claim 1, it is characterized in that described circumferential extension spring elastic gap-eliminating device comprises spiral stretching spring (8-6), first spring abutment (8-5) and second spring abutment (8-7), a plurality of spiral stretching springs (8-6) are installed in the lateral surface of main worm gear (8-4) and/or secondary worm gear (8-1) respectively, the two ends of each spiral stretching spring (8-6) respectively with separately first spring abutment (8-5), second spring abutment (8-7) links to each other, each first spring abutment (8-5), second spring abutment (8-7) is continuous with corresponding main worm gear (8-4) and/or secondary worm gear (8-1) respectively by screw thread.
5. gear grinding machines biplate combination worm gear helicoidal gear according to claim 1 is characterized in that the afterbody of described main shaft (2) is equipped with encoder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202622868U CN201720557U (en) | 2010-07-19 | 2010-07-19 | Double-piece combined worm helicoidal gear of gear grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202622868U CN201720557U (en) | 2010-07-19 | 2010-07-19 | Double-piece combined worm helicoidal gear of gear grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201720557U true CN201720557U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202622868U Expired - Fee Related CN201720557U (en) | 2010-07-19 | 2010-07-19 | Double-piece combined worm helicoidal gear of gear grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201720557U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109870077A (en) * | 2017-12-05 | 2019-06-11 | 北京自动化控制设备研究所 | A kind of servo-operated mechanism position feedback device |
-
2010
- 2010-07-19 CN CN2010202622868U patent/CN201720557U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870077A (en) * | 2017-12-05 | 2019-06-11 | 北京自动化控制设备研究所 | A kind of servo-operated mechanism position feedback device |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING KANGNI PRECISION MACHINERY CO., LTD. Free format text: FORMER OWNER: NANJING SUNNY PRECISION-MACHINED TOOL CO., LTD. Effective date: 20150610 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150610 Address after: 210000 No. 1, Nanjing economic and Technological Development Zone, Jiangsu, Nanjing Patentee after: Nanjing Kang Ni precision optical machinery Co., Ltd Address before: 211102, Meilin street, Jiangning Development Zone, Jiangsu, Nanjing, 8 Patentee before: Nanjing Sunny M & E Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20170719 |