CN201324895Y - Centreless ball feed screw grinding machine - Google Patents
Centreless ball feed screw grinding machine Download PDFInfo
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- CN201324895Y CN201324895Y CNU2008201697747U CN200820169774U CN201324895Y CN 201324895 Y CN201324895 Y CN 201324895Y CN U2008201697747 U CNU2008201697747 U CN U2008201697747U CN 200820169774 U CN200820169774 U CN 200820169774U CN 201324895 Y CN201324895 Y CN 201324895Y
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Abstract
The utility model discloses a centreless ball feed screw grinding machine and the cutting and machining technique thereof, wherein a plurality of grinding teeth which are arranged in parallel are evenly arranged on the ex-circle surface of an abrasive wheel (1) along the length direction, the outer periphery of the abrasive wheel (1) is an indent arc surface, and the outer periphery of a big guide pulley (2) is an indent arc surface. The cutting and machining technique thereof comprises the following steps: enabling a ball feed screw to reach a cutting zone through a guiding device and a limiting device under the rotation effect of an action wheel (10), starting feeding rapidly by the abrasive wheel (1), feeding slowly by the abrasive wheel (1) when the abrasive wheel (1) moves to a place 0.02 to 0.1mm far away from the ball feed screw, stopping feeding by the abrasive wheel (1) when the abrasive wheel moves to the terminal end of the cutting zone of the abrasive wheel, and withdrawing by the abrasive wheel (1). After the structure is adopted, the high speed and high efficient principle of an existing centreless grinding machine is utilized to cut the ball feed screw centrelessly, and the grinding machine can improve the processing precision and the working efficiency of elongated shaped ball feed screws in particular.
Description
Technical field
The utility model relates to field of machining, specifically is a kind of centreless ball screw grinding machine of professional grinding ball-screw.
Background technology
Ball-bearing lead-screw milling tool generally comprises lathe bed, emery wheel mill frame mechanism, guide wheel mill frame mechanism, feed mechanism, emery wheel correction mechanism, work supporting block mechanism.The emery wheel of emery wheel mill frame mechanism is fixedly mounted on the grinding wheel spindle, by its transmission mechanism driven rotary; The guide wheel of guide wheel mechanism is fixedly mounted on the guide wheel shaft, and support workpiece rotatably.Emery wheel and guide wheel are positioned at the both sides of workpiece, during the emery wheel rotation workpiece are carried out grinding work.
Chinese patent discloses the patent of invention " ball-bearing lead-screw milling tool " of number of patent application for " 200510041023.8 " on the net, it comprises lathe bed, workhead, the workpiece tailstock, workpiece is installed between above-mentioned workhead and the workpiece tailstock, workhead and headstock worm couple join, be equipped with the moving carriage that couches on the above-mentioned lathe bed, above-mentioned horizontal moving carriage drives horizontal ball screw assembly, by change gear and laterally moves, be equipped with on the above-mentioned horizontal moving carriage and vertically move planker, the above-mentioned planker that vertically moves drives vertical ball screw assembly, by vertical worm couple and vertically moves, and above-mentioned vertically moving is equipped with grinding attachment on the planker.
But above-mentioned this ball-bearing lead-screw milling tool adopts bistrique fixed, and workpiece is installed on the workbench, and workpiece moves axially.It exists following shortcoming: when needing the ball-screw of processing slim shape, because the characteristics of workpiece itself, need add thimble at the two ends of ball-screw, two supporting-points have been decided at two of ball-screw with regard to being equivalent to like this, add the easy deformation of elongated workpiece own, therefore when carrying out grinding, elongated ball-screw is easy at the mid portion bending, and the workpiece accuracy that can cause grinding to be come out like this is not high.Simultaneously, only be provided with one on the emery wheel of existing ball-bearing lead-screw milling tool and grind one's teeth in sleep, when the grinding work of carrying out ball-screw, efficient is very low like this.
The utility model content
Technical problem to be solved in the utility model is, a kind of centreless ball screw grinding machine is provided, and it utilizes the high-speed and high-efficiency principle of existing centerless grinder to come the centerless grinding ball-screw, particularly can improve the machining accuracy and the operating efficiency of elongated shape ball-screw.
For solving the problems of the technologies described above, a kind of centreless ball screw grinding machine that the utility model provides, comprise lathe bed, carriage, emery wheel, big guide wheel, truer, described emery wheel, big guide wheel and carriage are installed on the lathe bed, described carriage is between emery wheel and big guide wheel, and described grinding machine also comprises supporting plate, and described supporting plate is installed on the carriage, and and an inclination angle is arranged between the carriage, workpiece is positioned on the supporting plate; Evenly be provided with a plurality of grinding one's teeth in sleep of being arranged in parallel on the periphery of described emery wheel along its length, and the outer circumference surface of emery wheel is the cambered surface of indent; The outer circumference surface of described big guide wheel is the cambered surface of indent, and between the axis of big guide wheel and the lathe bed horizontal plane inclined angle alpha is arranged; Be provided with gatherer and stopping means at the two ends in wheel grinding zone, described gatherer and stopping means are installed on the carriage.
After adopting above structure, the utility model compared with prior art, have the following advantages: evenly be provided with grinding one's teeth in sleep that a plurality of (can by 50 to 500) be arranged in parallel on the emery wheel periphery in the utility model along its length, be equivalent to have simultaneously a plurality of (can by 50 to 500) to grind one's teeth in sleep in work, obvious like this operating efficiency and the precision that has improved grinding.Simultaneously, respectively be provided with workpiece gatherer and stopping means on the grinding area both sides, avoided bringing with two ends thimble location in the prior art defective of workpiece deformation, thereby can improve the machining accuracy of elongated shape ball-screw greatly, can bring up to 0-1 level after the grinding to the 3-4 level of original product precision before grinding.Because ball-screw has spiral angle, make supporting plate and carriage be certain angle of inclination, and emery wheel and big guide wheel outer circumference surface be the cambered surface of indent, between the axis of simultaneously big guide wheel and the lathe bed inclined angle alpha arranged, and these all are in order to guarantee the machining accuracy of ball-screw.
Described gatherer is meant, respectively be evenly distributed with two several hard steel guide wheels of row on both sides, described wheel grinding zone and a wolfram steel is led tooth mortise guide wheel, described wolfram steel is led several hard steel guide wheels between tooth mortise guide wheel and the emery wheel, wolfram steel is led tooth mortise guide wheel and is provided with a protruding tooth; Feeding end at grinding area also is provided with a driving wheel, and described driving wheel is between two hard steel guide wheels of row's hard steel guide wheel wherein.After adopting this structure, earlier ball-screw is placed on the hard steel guide wheel, the protruding tooth that utilizes wolfram steel to lead on the tooth mortise guide wheel matches with the recessed tooth of ball-screw, the rotation of driving wheel also makes ball-screw move forward when reaching grinding ball-screw tooth line mortise, beating when having avoided elongated ball-screw to work like this guaranteed machining accuracy more.
Described stopping means is meant, respectively be provided with wolfram steel at described grinding area two ends and lead tooth mortise guide rod, described wolfram steel is led tooth mortise guide rod and is provided with a protruding tooth, lead between the tooth mortise guide rod that at described emery wheel and wolfram steel the pushing guide wheel being installed, the centre-height of described pushing guide wheel is consistent with the centre-height of ball-screw.After adopting this structure, elongated ball-screw is close to by pushing guide wheel and big guide wheel, leading screw and big guide wheel are rotated with linear velocity, further guaranteed machining accuracy.
The discharge end of described grinding area is provided with gage outfit, and described gage outfit is installed on the carriage.After the discharge end of grinding area has been established gage outfit, can measure the accurate dimension of the round center of grinding one's teeth in sleep of emery wheel by ball-screw, come again to determine that wolfram steel is led tooth mortise guide wheel and wolfram steel is led the exact position of tooth mortise guide rod, thereby adjust corresponding emery wheel position.
Described hard steel guide wheel, wolfram steel are led tooth mortise guide wheel, gage outfit, wolfram steel and are led tooth mortise guide rod and be horizontal and vertical mobile fine-tuning being connected with pushing guide wheel and carriage.After adopting this structure, ball-screw can be contacted better and by wheel grinding with big guide wheel, thereby guarantee machining accuracy more.
The inclined angle alpha of described big guide wheel and lathe bed is two-way 10 degree.Adopting two-way tiltable angle, is because ball-screw can be divided into right-handed thread and left hand thread, and the inclination angle of therefore big guide wheel is two-way, and the inclination angle of supporting plate and carriage is also two-way simultaneously.
Described truer comprise move axially planker, move radially planker, diamond roller, grating chi, high-speed electric expreess locomotive, servomotor and linear electric motors, describedly move axially planker and move radially planker and all be connected with lathe bed, described diamond roller is fixedly connected on the main shaft of high-speed electric expreess locomotive, described high-speed electric expreess locomotive with move radially planker and be connected; Described servomotor is fixedly connected on and moves radially on the planker end face; Described grating chi is fixed on and moves axially on the planker end face, and described linear electric motors are fixedly connected on and move axially in the planker.Adopt the corrector structure of diamond roller, and, make truer positioning control and a tooth one tooth ground correction emery wheel more accurately, more can guarantee the grinding capacity of emery wheel simultaneously in conjunction with the supervisory function bit of grating chi and linear electric motors cooperation.
Description of drawings
Shown in Figure 1 is the structural representation of the utility model centreless ball screw grinding machine;
Shown in Figure 2 is among Fig. 1 A is to schematic diagram;
Shown in Figure 3 is among Fig. 1 B is to schematic diagram;
Shown in Figure 4 is the structural representation of the truer of the utility model centreless ball screw grinding machine;
Shown in Figure 5 is among Fig. 4 C is to schematic diagram;
Shown in Figure 6 is among Fig. 4 D is to schematic diagram.
Wherein: 1, emery wheel; 2, big guide wheel; 3, ball-screw; 4, supporting plate; 5, pushing guide wheel; 6, wolfram steel is led tooth mortise guide rod; 7, gage outfit; 8, wolfram steel is led tooth mortise guide wheel; 9, hard steel guide wheel; 10, driving wheel; 11, diamond roller; 12, high-speed electric expreess locomotive; 13, servomotor; 14, grating chi; 15, linear electric motors; 16, move axially planker; 17, move radially planker; 18, carriage.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
By the structural representation of the utility model centreless ball screw grinding machine of Fig. 1～shown in Figure 3 as can be known, it comprises lathe bed, carriage 18, emery wheel 1, big guide wheel 2, truer, described emery wheel 1, big guide wheel 2 and carriage 18 are installed on the lathe bed, described carriage 18 is between emery wheel 1 and big guide wheel 2, described grinding machine also comprises supporting plate 4, described supporting plate 4 is installed on the carriage 18, and and carriage 18 between an inclination angle is arranged, workpiece is positioned on the supporting plate 4.Evenly be provided with 50 even 500 grinding one's teeth in sleep of being arranged in parallel on the periphery of described emery wheel 1 along its length, and the outer circumference surface of emery wheel 1 is the cambered surface of indent.The outer circumference surface of described big guide wheel 2 is the cambered surface of indent, and between the axis of big guide wheel 2 and the lathe bed horizontal plane inclined angle alpha is arranged, and described inclined angle alpha is two-way 10 degree.Be provided with gatherer and stopping means at the two ends in wheel grinding zone, described gatherer and stopping means are installed on the carriage 18.
Above-described grinding one's teeth in sleep, just little emery wheel, 50 to 500 so how little emery wheels, in the moving process of grinding work piece, the seat of recessed tooth workpiece and protruding tooth emery wheel in conversion, and mutual complementary defective is arranged again simultaneously.Above-described carriage 18 is different by not being both of every grinding machine in actual applications, structure function is various, the parts of big or small multiple class, so do not annotate concrete shape.
Described gatherer is meant, respectively be evenly distributed with several hard steel guide wheels 9 on the grinding area both sides and a wolfram steel is led tooth mortise guide wheel 8, described wolfram steel is led several hard steel guide wheels 9 between tooth mortise guide wheel 8 and the emery wheel 1, wolfram steel is led tooth mortise guide wheel 8 and is provided with a protruding tooth; Feeding end at grinding area also is provided with a driving wheel 10, and described driving wheel 10 is between two hard steel guide wheels 9 of row's hard steel guide wheel 9 wherein.Described stopping means is meant, respectively is provided with wolfram steel at the grinding area two ends and leads tooth mortise guide rod 6, and described wolfram steel is led tooth mortise guide rod 6 and is provided with a protruding tooth.
The material that described wolfram steel is led tooth mortise guide rod 6 is a wolfram steel, its supporting force is by the steel plate transmission, ball-screw radially there are certain elasticity and thrust, thrust restrains several hectograms about tens, it is fixed that this will come according to the diameter of ball-screw, is as the criterion can or not block the ball-screw release location.The steel plate rigidity axial according to ball-screw is stronger, as uses a thrust-kilogram, the scope of activities of ball-screw to be no more than 2 microns.The material that described wolfram steel is led tooth mortise guide wheel 8 also is wolfram steel, hypomere supporting force is by the steel plate transmission below it, its radial elastic is similar with the supporting steel plate that wolfram steel is led tooth mortise guide rod 6, but top epimere and ball-screw then must be used inelastic steel plate near the place, and wolfram steel lead tooth mortise guide wheel 8 to the position of inclining in a hard steel guide wheel 9 is installed, its supporting force is led tooth mortise guide wheel 8 same block plates from wolfram steel, and being does not have flexiblely yet, and can finely tune spacing size with ball-screw separately.The centre-height that these two wolfram steel are led tooth mortise guide wheel 8 is the same with the centre-height of ball-screw, but this function is used for the big long again ball-screw of mill, or ball-screw length is used when surpassing the emery wheel entire length.
Lead that at described emery wheel 1 and wolfram steel pushing guide wheel 5 being installed between the tooth mortise guide rod 6, the centre-height of described pushing guide wheel 5 is consistent with the centre-height of ball-screw.The discharge end of described grinding area is provided with gage outfit 7, and described gage outfit 7 is installed on the carriage 18.Described hard steel guide wheel 9, wolfram steel are led tooth mortise guide wheel 8, gage outfit 7, wolfram steel and are led tooth mortise guide rod 6 and be horizontal and vertical mobile adjustable being connected with pushing guide wheel 5 and carriage 18.
By the structural representation of the truer of the utility model centreless ball screw grinding machine of Fig. 4～shown in Figure 6 as can be known, described truer comprise move axially planker 16, move radially planker 17, diamond roller 11, grating chi 14, high-speed electric expreess locomotive 12, servomotor 13 and linear electric motors 15, describedly move axially planker 16 and move radially planker 17 and all be connected with lathe bed, described diamond roller 11 is fixedly connected on the main shaft of high-speed electric expreess locomotive 12, described high-speed electric expreess locomotive 12 with move radially planker 17 and fixedly connected; Described servomotor 13 is fixedly connected on and moves radially on planker 17 end faces; Described grating chi 14 is fixed on and moves axially on planker 16 end faces, and described linear electric motors 15 are fixedly connected on and move axially in the planker 16.
The utility model centreless ball screw grinding machine is when carrying out grinding, and it comprises following step:
1. ball-screw is placed on hard steel guide wheel 9 and wolfram steel and leads on the tooth mortise guide wheel 8, simultaneously wolfram steel is led protruding tooth on the tooth mortise guide wheel 8 and is put into recessed tooth on the ball-screw;
2. under the turning effort of driving wheel 10, make the ball-screw rotation move through the protruding tooth that wolfram steel is led tooth mortise guide rod 6, arrive in the middle of pushing guide wheel 5 and the big guide wheel 2;
3. push guide wheel 5 and do radially pushing, ball-screw and big guide wheel 2 are close to, and make ball-screw and big guide wheel 2 with the linear velocity rotation, continue simultaneously to move, at this moment the distance between emery wheel 1 and the big guide wheel 2 is bigger 0.5～1.5 millimeter than ball-screw diameter dimension;
4. when ball-screw move to 30%～80% of ball-screw total length enter wheel grinding district or wheel grinding zone total length 30%～80% the time, emery wheel 1 beginning rapid feed;
5. when emery wheel 1 moves to distance with ball-screw and is 0.02～0.1 millimeter, emery wheel 1 feed at a slow speed, feed velocity is that to revolve its depth of cut that turns around be 0.001～0.01 millimeter to ball-screw;
When 6. the front end of ball-screw runs to wheel grinding zone terminal, emery wheel 1 stops feed, pushing guide wheel 5, wolfram steel that this moment, ball-screw continued to move to emery wheel 1 other end are led tooth mortise guide rod 6, hard steel guide wheel 9 and gage outfit 7, leave the wheel grinding zone after the end of ball-screw is through pushing guide wheel 5
When 7. emery wheel 1 withdrawing, after the withdrawing time fixes on emery wheel 1 and stops feed 0.5～5 second, or the ball-screw back segment is when just having gone out the wheel grinding zone.
Described emery wheel 1 and the big feed speed of guide wheel 2 when grinding according to the length of ball-screw be followed successively by soon, slow, fast, slow, soon.
Described wheel grinding zone needs the cooling fluid of uniform motor-driven alternating temperature and cools off.
But the ball-screw diameter range of the grinding of the utility model centreless ball screw grinding machine is 60 millimeters of Φ 10～Φ, and length can reach more than 10 meters.When mill long lead screw when (surpassing grinding wheel width), as length is more than 10 meters, and carriage 18 chassis must be fixed and can not move, and the stock removal feeding will be filled amount of movement, and grind frame by emery wheel and move, this moment, emery wheel mill frame will have the slew gear that resembles under the guide wheel mill frame of the prior art.
Compare with original centerless grinder, their profiles are identical, though increase by tens parts, effect is diverse, and former centerless grinder is a cylindrical grinding, and the utility model grinding machine is the tooth line mortise of mill ball-screw.Can not grind under the leg-of-mutton case conditions, also can tooth line mortise, leading screw mortise and cylindrical grinding simultaneously together.
Compare with original ball-bearing lead-screw milling tool, not only profile is also different fully for they, and operating efficiency is different fully, and method of operating is different fully.The product of the grinding of wanting is identical a bit, can both grind ball-screw, but the only special mill ball-screw of this centreless ball screw grinding machine especially can grind little and elongated ball-screw, and this is that original ball-bearing lead-screw milling tool institute is helpless.
This centreless ball screw grinding machine will be in constant temperature office work, the emery wheel bistrique is wanted independent preheating constant temperature, needs to contact in a large number the position of cooling fluid in the grinding area, must have the thermal insulation material to keep constant temperature, this cooling fluid will change the temperature height according to the size variation of stock removal, reaches the constant temperature of workpiece.
Moving of the big upper slide rest of this grinding machine all will be transmitted with high accuracy needle roller track, and enough cleannes, lubricity will be arranged.
Some parts of this grinding machine, as moving of sand, guide wheel mill frame, the correction motion of truer, the monitoring of the measurer of grinding area, instrument, gage outfit, the pressure size conversion of pushing guide wheel, these all will control (cryogenic liquid storage bin, groove, these parts add after being) with the computer intellectuality temperature height conversion of cooling fluid etc.
The utility model is not limited to above-described structure, and external diameter * thickness of wherein not being in the mood for ball grinding machine medium plain emery wheel can reach 1 meter * 1 meter or bigger, and the diameter of big guide wheel can reach 0.6～0.7 meter, and thickness can reach more than 1.1 meters.These variations all fall within the utility model protection domain.
Claims (7)
1, a kind of centreless ball screw grinding machine, comprise lathe bed, carriage (18), emery wheel (1), big guide wheel (2), truer, described emery wheel (1), big guide wheel (2) and carriage (18) are installed on the lathe bed, described carriage (18) is positioned between emery wheel (1) and the big guide wheel (2), it is characterized in that: described grinding machine also comprises supporting plate (4), described supporting plate (4) is installed on the carriage (18), and and carriage (18) between an inclination angle is arranged, workpiece is positioned on the supporting plate (4); Evenly be provided with a plurality of grinding one's teeth in sleep of being arranged in parallel on the periphery of described emery wheel (1) along its length, and the outer circumference surface of emery wheel (1) is the cambered surface of indent; The outer circumference surface of described big guide wheel (2) is the cambered surface of indent, and between the axis of big guide wheel (2) and the lathe bed horizontal plane inclined angle alpha is arranged; Be provided with gatherer and stopping means at the two ends in wheel grinding zone, described gatherer and stopping means are installed on the carriage (18).
2, centreless ball screw grinding machine according to claim 1, it is characterized in that: described gatherer is meant, respectively be evenly distributed with two several hard steel guide wheels (9) of row on both sides, described wheel grinding zone and a wolfram steel is led tooth mortise guide wheel (8), described wolfram steel is led several hard steel guide wheels (9) between tooth mortise guide wheel (8) and the emery wheel (1), wolfram steel is led tooth mortise guide wheel (8) and is provided with a protruding tooth; Feeding end at grinding area also is provided with a driving wheel (10), and described driving wheel (10) is positioned at wherein one to be arranged between two hard steel guide wheels (9) of hard steel guide wheel (9).
3, centreless ball screw grinding machine according to claim 1, it is characterized in that: described stopping means is meant, respectively be provided with wolfram steel at described grinding area two ends and lead tooth mortise guide rod (6), described wolfram steel is led tooth mortise guide rod (6) and is provided with a protruding tooth, lead that at described emery wheel (1) and wolfram steel pushing guide wheel (5) being installed between the tooth mortise guide rod (6), the centre-height of described pushing guide wheel (5) is consistent with the centre-height of ball-screw.
4, centreless ball screw grinding machine according to claim 1 is characterized in that: the discharge end of described grinding area is provided with gage outfit (7), and described gage outfit (7) is installed on the carriage (18).
5, according to claim 2 or 3 or 4 described centreless ball screw grinding machines, it is characterized in that: described hard steel guide wheel (9), wolfram steel are led tooth mortise guide wheel (8), gage outfit (7), wolfram steel and are led tooth mortise guide rod (6) and be horizontal and vertical mobile fine-tuning being connected with pushing guide wheel (5) and carriage (18).
6, centreless ball screw grinding machine according to claim 1 is characterized in that: described big guide wheel (2) is two-way 10 degree with the inclined angle alpha of lathe bed.
7, centreless ball screw grinding machine according to claim 1, it is characterized in that: described truer comprise move axially planker (16), move radially planker (17), diamond roller (11), grating chi (14), high-speed electric expreess locomotive (12), servomotor (13) and linear electric motors (15), describedly move axially planker (16) and move radially planker (17) and all be connected with lathe bed, described diamond roller (11) is fixedly connected on the main shaft of high-speed electric expreess locomotive (12), described high-speed electric expreess locomotive (12) with move radially planker (17) and be connected; Described servomotor (13) is connected and moves radially on planker (17) end face; Described grating chi (14) is fixed on and moves axially on planker (16) end face, and described linear electric motors (15) are fixedly connected on and move axially in the planker (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201697747U CN201324895Y (en) | 2008-12-12 | 2008-12-12 | Centreless ball feed screw grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201697747U CN201324895Y (en) | 2008-12-12 | 2008-12-12 | Centreless ball feed screw grinding machine |
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| Publication Number | Publication Date |
|---|---|
| CN201324895Y true CN201324895Y (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201697747U Expired - Fee Related CN201324895Y (en) | 2008-12-12 | 2008-12-12 | Centreless ball feed screw grinding machine |
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| Country | Link |
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| CN (1) | CN201324895Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965111A (en) * | 2015-02-28 | 2016-09-28 | 钢钣工业株式会社 | Grinding device and grinding head using same |
-
2008
- 2008-12-12 CN CNU2008201697747U patent/CN201324895Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965111A (en) * | 2015-02-28 | 2016-09-28 | 钢钣工业株式会社 | Grinding device and grinding head using same |
| CN105965111B (en) * | 2015-02-28 | 2018-06-12 | 钢钣工业株式会社 | Grinding device and the grinding head for this grinding device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20111212 |