CN103707129A - High-efficient precision zero-clearance ceramic ball dividing device - Google Patents
High-efficient precision zero-clearance ceramic ball dividing device Download PDFInfo
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- CN103707129A CN103707129A CN201310693893.8A CN201310693893A CN103707129A CN 103707129 A CN103707129 A CN 103707129A CN 201310693893 A CN201310693893 A CN 201310693893A CN 103707129 A CN103707129 A CN 103707129A
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- worm screw
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- 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
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
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Abstract
The invention relates to a dividing device, in particular to a high-efficient precision zero-clearance ceramic ball dividing device. The high-efficient precision zero-clearance ceramic ball dividing device comprises a ball gear and a worm component, wherein the worm component consists of a main worm and an auxiliary worm; the auxiliary worm is sleeved on a central shaft of the main worm; the main worm is fixed to the auxiliary worm through an expansion sleeve; the outer arc surfaces of the main worm and the auxiliary worm are provided with screwball rails; spherical slots are uniformly formed in the outer circumferential surface of the ball gear; ceramic balls are arranged in the spherical slots; the screwball rails are connected with the spherical slots through the ceramic balls in a rolling way; the periphery of the ball gear is provided with a ring baffle; ceramic ball mounting holes are formed in the ring baffle. The high-efficient precision zero-clearance ceramic ball dividing device greatly reduces the resistance and abrasion by means of rolling friction, improves the transmission efficiency, is low in processing difficulty, simple in structure and convenient to mount and adjust, can be used in dividing mechanisms such as machine tool rotary workbenches, dividing heads, production line dividing devices and the like and is suitable for common equipment, precision equipment and heavy-load cutting equipment.
Description
Technical field
The present invention relates to a kind of indexing means, relate in particular to a kind of high-efficiency and precision without back clearance Ceramic Balls indexing means.
Background technology
Indexing means refer to can be in a clamping workpiece process every processing behind a surface, drive the excessively certain angle of changing of workpieces to change the device of finished surface position.Common indexing means is mainly to adopt worm-drive, it has that speed reducing ratio is large, compact conformation, stable working, low noise advantages, but because worm-drive is to carry out transmission by the sliding friction between worm and worm wheel, and the worm screw of adjustable back clearance can only be cylindrical worm, and area of contact is little, therefore it is low as indexing means transmission efficiency, the speed that can bear is low, and wearing and tearing are large, and precision stability is poor, can bearing load low, service life be shorter.
In order to overcome all deficiencies of traditional worm and gear, there is adopting the worm-drive of Ball Transmission, it is transformed into the sliding friction between traditional worm and wheel the rolling friction of ball, has improved transmission efficiency, has reduced wearing and tearing.But in the ball-type worm-drive of present stage, time pearl passageway machining of ball is very difficult, and owing to being difficult to pack into Ball Retainer, between steel ball, contact with each other, so this class formation is not rolling friction completely, between ball, also exist sliding friction even to interfere, transmission efficiency improves limited, and the limit velocity that can reach is lower.And aspect elimination back clearance, mostly by packing into compared with the ball of raceway slightly larger in diameter, realize precompressed elimination reversion back clearance, once this mode cannot be adjusted the size of precompression after machining, easily there are two kinds of situations: back clearance even appears in the excessive precompression deficiency that causes of raceway diameter, affects indexing accuracy; The too small precompression that causes of raceway diameter is excessive, then causes resistance larger, transmission efficiency greatly reduce and assembly difficulty large.Therefore the ball-type worm indexing device of present stage is difficult to realize high-efficiency and precision without the transmission of back clearance.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, provide a kind of high efficiency, high accuracy, without back clearance and can the large Ceramic Balls indexing means of bearing load.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of high-efficiency and precision is without back clearance Ceramic Balls indexing means, comprise ball wheel and worm screw parts, its special character is that described worm screw parts are comprised of main worm screw and secondary worm screw, described secondary worm set is on the central shaft of main worm screw, by expansion sleeve, main worm screw and secondary worm screw are fixed, on described main worm screw and the exterior arc surface of secondary worm screw, there is spiral ball track; Described ball wheel external peripheral surface is evenly distributed with spherical groove, placing ceramic ball in spherical groove; Between described spiral ball track and spherical groove, by described Ceramic Balls, roll and connect; The outer ring baffle that is arranged with of described ball wheel, ring baffle is provided with Ceramic Balls installing hole.
Wherein, the shape and size of described main worm screw and the spiral ball track on secondary worm screw, through meticulous optimal design and Precision Machining, guarantee that spiral ball track only has a side to contact with Ceramic Balls when engagement, opposite side is gapped, and contact position is conducive to Ceramic Balls revolution rolling.
Spherical groove shape and size on described ball wheel, through meticulous optimal design and Precision Machining, guarantee that spherical groove only has a side to contact with Ceramic Balls when engagement, and contact position is conducive to Ceramic Balls revolution rolling.
Described ring baffle can retrain the Ceramic Balls of not participation engagement always in spherical groove.
The invention has the beneficial effects as follows:
The present invention is transformed into the sliding friction between traditional worm and gear the rolling friction of Ceramic Balls, resistance and wearing and tearing reduce greatly, improve transmission efficiency, difficulty of processing is low, simple in structure, install easy to adjustly, can be used in machine tool rotary working table, dividing head and production line indexing means equal indicative mechanism, be applicable to conventional equipment, precision equipment and heavily loaded cutting apparatus.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described Ceramic Balls adopts silicon nitride ceramic ball.
Adopt the beneficial effect of above-mentioned further scheme to be, the self-lubricating property of silicon nitride ceramic ball is good, and coefficient of friction is low, and wearability is good, has therefore reduced wearing and tearing, has greatly improved transmission efficiency and limit velocity.
Further, described worm screw parts adopt anchor ring form, main worm screw and secondary worm screw, consist of, and main worm screw and secondary worm screw surface are equipped with spiral ball track.
Adopt the beneficial effect of above-mentioned further scheme to be, can eliminate back clearance by adjusting the angle between spiral ball track on main worm screw, secondary worm screw surface, reach desirable precompression, realize very high indexing accuracy; The form that adopts enveloping worm, contact area is larger, can bear heavy duty cutting.
Further, the both ends open place of described ring baffle is tightly adjacent with the exterior arc surface of main worm screw and secondary worm screw.
Adopt the beneficial effect of above-mentioned further scheme to be, Ceramic Balls can be from ring baffle region the smooth and easy spiral ball track that goes out to become owner of worm screw and secondary worm screw.
Further, described worm screw parts adopt single head spiral ball Track desigh or multi-head spiral ball Track desigh.
Adopt the beneficial effect of above-mentioned further scheme to be, adopt multi-head spiral ball Track desigh, can adapt to different gearratio requirements.
Further, in the coaxial line by main worm screw and secondary worm screw the plane perpendicular to ball wheel axis, on ball wheel azimuth direction, the interval angle of major and minor worm screw spiral ball track spherical section separately equals the interval angle of ball wheel surface spherical groove.
Adopt the beneficial effect of above-mentioned further scheme to be, the every rotation of main worm screw and secondary worm screw one week, drives the revolution of ball wheel, and the angle that Ceramic Balls is rolled at spiral ball track just in time equals the interval angle of spherical groove, improved indexing accuracy, and guaranteed that Ceramic Balls remains in its corresponding spherical groove.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 be Fig. 1 along A-A to cutaway view;
Fig. 3 be Fig. 2 along B-B to cutaway view;
Fig. 4 is the mesh schematic representation of spiral ball track of the present invention, spherical groove and Ceramic Balls;
In figure, 1, ring baffle; 2, Ceramic Balls; 3, ball wheel; 4, spherical groove; 5, main worm screw; 6, secondary worm screw; 7, expansion sleeve; 8, spiral ball track; 9, Ceramic Balls installing hole.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
A kind of high-efficiency and precision is without back clearance Ceramic Balls indexing means, comprise ball wheel 3 and worm screw parts, its special character is that described worm screw parts are comprised of main worm screw 5 and secondary worm screw 6, described secondary worm screw 6 is enclosed within on the central shaft of main worm screw 5, by expansion sleeve 7, main worm screw 5 and secondary worm screw 6 is fixing, on described main worm screw 5 and the exterior arc surface of secondary worm screw 6, there is spiral ball track 8; Described ball is taken turns 3 external peripheral surfaces and is evenly distributed with spherical groove 4, the interior placing ceramic ball 2 of spherical groove 4; Between described spiral ball track 8 and spherical groove 4, by described Ceramic Balls 2, roll and connect; The outer ring baffle 1 that is arranged with of described ball wheel 3, ring baffle 1 is provided with Ceramic Balls installing hole 9, and the exterior arc surface of the both ends open place of described ring baffle 1 and main worm screw 5, secondary worm screw 6 is tightly adjacent.
Wherein, worm screw parts are comprised of main worm screw 5 and secondary worm screw 6, its exterior arc surface and on spiral ball track 8 can, by after main worm screw 5 and 6 use expansion sleeve 7 swellings of secondary worm screw, on numerical control machining center, utilize pivot angle milling head overall time to process.Add man-hour requirement and use special-purpose cutter, the profile of cutter front end is to be determined by the design shape in spiral ball track 8 cross sections and size.
Ball is taken turns the uniform spherical groove of 3 external peripheral surfaces 4 and can on numerical control machining center, by numerical control rotating platform, be shaped, and adds and need to use special-purpose cutter equally man-hour, and the profile of cutter front end is to be determined by the design shape in spherical groove 4 cross sections and size.
During assembling, first ball wheel 3, ring baffle 1 and main worm screw 5 and secondary worm screw 6 are installed on its correct position, the spiral ball track 8 of main worm screw 5 and secondary worm screw 6 should just align, and can not have differential seat angle, uses expansion sleeve 7 swellings.Ceramic Balls 2, by Ceramic Balls installing hole 9 many spherical grooves 4 of putting into ball wheel 3, is often put into a roating sphere wheel 3 and turned over a spherical groove 4.When being installed to the Ceramic Balls 2 of some, be that Ceramic Balls 2 on ball wheel 3 is while arriving main worm screws 5 and secondary worm screw 6 place, should rotate main worm screw 5, secondary worm screw 6 and ball wheel 3 simultaneously, make the Ceramic Balls 2 on ball wheel 3 can enter into the spiral ball track 8 on main worm screw 5, secondary worm screw 6, then continue to pack Ceramic Balls into from Ceramic Balls installing hole 9, often pack one into, answer rotary worm parts one week, until all have a Ceramic Balls 2 in each spherical groove 4 on ball wheel 3, then seal Ceramic Balls installing hole 9.Unclamp the expansion sleeve 7 on worm screw parts, adjust the angle between main worm screw 5, secondary worm screw 6, thereby make the two from both direction, approach and compress Ceramic Balls 2 on spherical groove 4, realize certain pretightning force, eliminate back clearance, revolution worm screw parts, sensation stable drive is smooth and easy, afterwards by expansion sleeve 7 swellings.
In the indexing means course of work, use driven by servomotor worm screw parts to rotate, Ceramic Balls 2 is turned round rolling in spiral ball track 8, and power is delivered to by Ceramic Balls 2 in the spherical groove 4 of ball wheel 3, drive ball wheel 3 revolutions then.Owing to being rolling friction between Ceramic Balls in transmission process 2 and worm screw parts, ball wheel 3, thereby resistance and wearing and tearing reduce greatly, have improved efficiency; Between worm screw parts, ball wheel 3 and Ceramic Balls 2 threes, do not have gap, greatly improved indexing accuracy, device can be used in precision equipment.The form that simultaneously adopts enveloping worm, contact area is larger, and device also can be used on heavily loaded cutting apparatus.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a high-efficiency and precision is without back clearance Ceramic Balls indexing means, comprise ball wheel and worm screw parts, it is characterized in that: described worm screw parts are comprised of main worm screw and secondary worm screw, described secondary worm set is on the central shaft of main worm screw, by expansion sleeve, main worm screw and secondary worm screw are fixed, on described main worm screw and the exterior arc surface of secondary worm screw, there is spiral ball track; Described ball wheel external peripheral surface is evenly distributed with spherical groove, placing ceramic ball in spherical groove; Between described spiral ball track and spherical groove, by described Ceramic Balls, roll and connect; The outer ring baffle that is arranged with of described ball wheel, ring baffle is provided with Ceramic Balls installing hole.
2. a kind of high-efficiency and precision according to claim 1, without back clearance Ceramic Balls indexing means, is characterized in that: described Ceramic Balls adopts silicon nitride ceramic ball.
3. a kind of high-efficiency and precision according to claim 1, without back clearance Ceramic Balls indexing means, is characterized in that: the spiral ball track on described main worm screw and the exterior arc surface of secondary worm screw is single head spiral ball Track desigh or multi-head spiral ball Track desigh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693893.8A CN103707129A (en) | 2013-12-18 | 2013-12-18 | High-efficient precision zero-clearance ceramic ball dividing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693893.8A CN103707129A (en) | 2013-12-18 | 2013-12-18 | High-efficient precision zero-clearance ceramic ball dividing device |
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| CN103707129A true CN103707129A (en) | 2014-04-09 |
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| CN201310693893.8A Pending CN103707129A (en) | 2013-12-18 | 2013-12-18 | High-efficient precision zero-clearance ceramic ball dividing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493638A (en) * | 2014-12-30 | 2015-04-08 | 深圳市创世纪机械有限公司 | 360-degree dividing device for clamp-arm type tool changer |
| CN110153793A (en) * | 2019-06-17 | 2019-08-23 | 烟台环球机床装备股份有限公司 | Zero back clearance cylindrical cam indexing of one kind and device |
| CN116728109A (en) * | 2023-08-15 | 2023-09-12 | 烟台环球机床装备股份有限公司 | Rotary workbench capable of achieving accurate positioning |
| CN117620285A (en) * | 2024-01-25 | 2024-03-01 | 廊坊市伊贝格机械有限公司 | Transmission clearance adjustment control method, control system, equipment and medium |
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| JPH05302649A (en) * | 1992-04-28 | 1993-11-16 | Kamo Seiko Kk | Worm speed reducer |
| CN101371060A (en) * | 2006-01-26 | 2009-02-18 | 旋转控制传动有限责任公司 | Worm-gear assembly having a pin raceway |
| CN101965464A (en) * | 2008-03-03 | 2011-02-02 | 明光精机有限公司 | Ball-type speed reducer and rotary table device using the same |
| CN201731022U (en) * | 2010-07-27 | 2011-02-02 | 朱建彬 | Rolling ball worm gear transmission pair |
| CN102734389A (en) * | 2012-06-25 | 2012-10-17 | 西华大学 | Worm transmission device capable of eliminating gear backlash |
| CN203696608U (en) * | 2013-12-18 | 2014-07-09 | 烟台环球机床附件集团有限公司 | High-efficiency precise back clearance-free ceramic ball indexing device |
-
2013
- 2013-12-18 CN CN201310693893.8A patent/CN103707129A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05302649A (en) * | 1992-04-28 | 1993-11-16 | Kamo Seiko Kk | Worm speed reducer |
| CN101371060A (en) * | 2006-01-26 | 2009-02-18 | 旋转控制传动有限责任公司 | Worm-gear assembly having a pin raceway |
| CN101965464A (en) * | 2008-03-03 | 2011-02-02 | 明光精机有限公司 | Ball-type speed reducer and rotary table device using the same |
| CN201731022U (en) * | 2010-07-27 | 2011-02-02 | 朱建彬 | Rolling ball worm gear transmission pair |
| CN102734389A (en) * | 2012-06-25 | 2012-10-17 | 西华大学 | Worm transmission device capable of eliminating gear backlash |
| CN203696608U (en) * | 2013-12-18 | 2014-07-09 | 烟台环球机床附件集团有限公司 | High-efficiency precise back clearance-free ceramic ball indexing device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493638A (en) * | 2014-12-30 | 2015-04-08 | 深圳市创世纪机械有限公司 | 360-degree dividing device for clamp-arm type tool changer |
| CN104493638B (en) * | 2014-12-30 | 2018-01-12 | 深圳市创世纪机械有限公司 | A kind of 360 degree of indexing means for clamping-arm tool magazine |
| CN110153793A (en) * | 2019-06-17 | 2019-08-23 | 烟台环球机床装备股份有限公司 | Zero back clearance cylindrical cam indexing of one kind and device |
| CN116728109A (en) * | 2023-08-15 | 2023-09-12 | 烟台环球机床装备股份有限公司 | Rotary workbench capable of achieving accurate positioning |
| CN116728109B (en) * | 2023-08-15 | 2023-10-10 | 烟台环球机床装备股份有限公司 | Rotary workbench capable of achieving accurate positioning |
| CN117620285A (en) * | 2024-01-25 | 2024-03-01 | 廊坊市伊贝格机械有限公司 | Transmission clearance adjustment control method, control system, equipment and medium |
| CN117620285B (en) * | 2024-01-25 | 2024-05-28 | 廊坊市伊贝格机械有限公司 | Transmission clearance adjustment control method, control system, equipment and medium |
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Application publication date: 20140409 |