CN201906895U - Four-linkage enveloping worm numerical control (NC) grinding composite machine tool - Google Patents

Four-linkage enveloping worm numerical control (NC) grinding composite machine tool Download PDF

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Publication number
CN201906895U
CN201906895U CN2010206845507U CN201020684550U CN201906895U CN 201906895 U CN201906895 U CN 201906895U CN 2010206845507 U CN2010206845507 U CN 2010206845507U CN 201020684550 U CN201020684550 U CN 201020684550U CN 201906895 U CN201906895 U CN 201906895U
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China
Prior art keywords
grinding
worm
axis
axle
enveloping worm
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Expired - Fee Related
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CN2010206845507U
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Chinese (zh)
Inventor
和法洋
李展山
李开卫
黎亚元
陈守强
张恕远
陈廷成
黎帆
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SHANGHAI HEZHONG HEAVY INDUSTRY MACHINERY CO LTD
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SHANGHAI HEZHONG HEAVY INDUSTRY MACHINERY CO LTD
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Abstract

The utility model relates to the field of mechanical technique, in particular to a four-linkage enveloping worm numerical control (NC) grinding composite machine tool which is characterized in that a main shaft motor 3 is used for driving a main shaft 5 and an enveloping worm 7 to rotate around a C axis by a synchronous belt; a Z-axis servo motor 10 is used for driving a ball screw 17 to drive a big supporting plate 11 to move along a Z-direction guide rail 16 by a synchronous belt; an X-axis servo motor 19 is used for driving a ball screw 13 to drive a small supporting plate 15 to move along an X-direction guide rail 12 by a coupler; a Y-axis servo motor 18 is used for driving an NC rotary table 14 to rotate around a Y axis by a gear; an NC knife rest or grinding head is fixedly connected onto the NC rotary table; a grinding head motor 20 is used for driving a grinding wheel 21 to rotate around a B axis of the grinding wheel by a synchronous belt; and the grinding wheel and the motor rotate around an A axis together by operating a hand wheel. Compared with the prior art, the four-linkage enveloping worm NC grinding composite machine tool is simple and novel in structure, convenient and safe to operate, high in processing efficiency and wide in range. In addition, high-speed rotation can be carried out, and turning and grinding can be completed on the same machine tool, so that the functions are complete; and the four-linkage enveloping worm NC grinding composite machine tool is higher in reliability, stronger in environmental adaptation capability and more accurate in transmission accuracy and processing accuracy.

Description

A kind of tetrad rotating ring surface-worm numerical control grinding combined machine
Technical field
The utility model relates to field of mechanical technique, and the lathe of relevant processing enveloping worm comprises its turning and method for grinding, a kind of specifically tetrad rotating ring surface-worm numerical control grinding combined machine.
Background technology
Domestic patent publication No.: CN1907615A, a kind of enveloping worm Digit Control Machine Tool of energy virtual center distance is disclosed, this lathe has following four linkage coordinate motions: main shaft (workpiece) is around the gyration A (being parallel to Z) of self axis, two orthogonal translational motion Xs, the Z of tool stand in horizontal plane, tool stand is around self axes O 0The gyration Y on (perpendicular to the XZ plane).Tool stand one side and principal axis A gearratio I=on request A/ YRotation on the one hand by X, Z interlock, is done circular motion around the virtual center of circle (being the round heart of shaping of an enveloping worm) revolution, thereby is realized the big centre-to-centre spacing concave, convex of the machine tooling enveloping worm with little centre-to-centre spacing.Cost reduces, compact conformation, and it is little to take up room.This lathe is equipped with different annexes, can be respectively applied for turning, milling, grinding, and function is strong.But its main shaft is common axis servomotor, can't carry out the high speed rotation, also just can't carry out the turning of worm blank other size except that helicoid.
Domestic patent publication No.: CN101774029A, a kind of method for turning of helical surface of enveloping worm is disclosed, technical scheme comprises enveloping worm (1), lathe tool (2), worm axis (3) and place planar S thereof, during the helicla flute of turning enveloping worm (1), the left point of a knife N and the right point of a knife M of lathe tool (2) move on the both direction that is parallel and perpendicular to worm axis (3) with lathe tool (2) in planar S all the time, calculate according to theory, obtain enveloping worm (a 1) spiral fluted left side, the right side helicoid, put opposite side helicoid point along the tangential layering turning of this anchor ring from the tooth top anchor ring of enveloping worm (1) to the tooth root anchor ring along the anchor ring radially layered with from enveloping worm (1) spiral fluted one side helicoid, turning goes out the helicla flute and the helicoid thereof of enveloping worm (1).Solved the problem of turning helical surface of enveloping worm on numerically controlled lathe.But this method need be carried out on the lathe that possesses the C function, and has only solved the roughing problem of helicoid blank, for precise forming also needs to use special purpose grinder.
Summary of the invention
Be to overcome the deficiencies in the prior art order of the present utility model, a kind of novel structure be provided, can carry out the tetrad rotating ring surface-worm numerical control grinding combined machine of high-speed turning.
For achieving the above object, design a kind of tetrad rotating ring surface-worm numerical control grinding combined machine, comprise lathe body and control system, it is characterized in that by 1 lathe bed, 2 main spindle boxes, 3 spindle motors, 4 spindle encoders, 5 main shafts, 6 chucks, 7 enveloping worms, 8 bistriques, 9 hydraulic pressure tailstocks, 10Z axle servomotor, 11 big palettes, 12X is to guide rail, 13X is to ball-screw, 14 numerical control rotating platforms, 15 little supporting plates, 16Z is to guide rail, 17Z is to ball-screw, 18Y axle servomotor, 19X axle servomotor, 20 grinding head motors, 21 emery wheels, and bed slide, elements such as numerically-controlled slide are formed; Described spindle motor 3 is by band drive shaft 5 and enveloping worm 7 rotate around the C axle synchronously, Z axle servomotor 10 drives the big holder of ball-screw 17 drives 11 plates by synchronous band and moves to guide rail 16 along Z, X-axis servomotor 19 drives the little supporting plate 15 of ball-screw 13 drives by shaft coupling and moves to guide rail 12 along X, Y-axis servomotor 18 rotates around Y-axis by gear drive numerical control rotating platform 14, numerically-controlled slide or bistrique connect firmly on numerical control rotating platform, grinding head motor 20 is by driving emery wheel 21 synchronously around self B axle rotation, handwheel shakes emery wheel and motor is rotated around the A axle together, described X, the A axle is parallel, Z, the C axle is parallel, X, Y, three of Z meet right-handed Cartesian coordinate system.
The method for turning of helical surface of enveloping worm be by the worm screw axial line and perpendicular to the mid-plane of worm gear axial line in root circle of worm arc radius R f1, tip circle of worm arc radius R a1, base radius rb, mobile lathe tool make top sword right endpoint contact with the M point.According to gearratio relation when lathe tool be radius when moving to the E point by the M point when justifying moving interpolation with Ra1, the worm screw rotational angle multiply by gearratio i for angle MO2E, has so just formed a helix.According to the ring Surface Worm Shaping principle, cutting edge is tangent with basic circle, return the M point behind the withdrawing along the feed of NM direction to the P point, be that radius carries out circular interpolation then with R, when moving to the Q point, tangent for the line and the basic circle that guarantee cutting edge, the angle that worm screw is rotated multiply by gearratio i for angle PO2Q, has so just formed another helix.Return the P point behind the withdrawing along the feed of MP direction, carry out moving interpolation and form another helix, when radius of clean-up reaches Rf1, finish the rough turn of worm screw right flank.Mobile lathe tool is to the E point, top, lathe tool left side sword is overlapped with the E point, swivel becket surface-worm certain angle, making at this moment, the basic circle left vertical overlaps with the worm shaft cross section upper left side flank of tooth in the tangent line of worm axis, the same with right flank along the feed of EQ direction, carry out the cutting of left flank.
Adjust X, Z, Y-axis position during the method for grinding of enveloping worm and make emery wheel generating surface and basic circle tangent, rotate the C axle then and make worm tooth-surface and emery wheel generating surface tangent.Numerical control rotating platform rotational angle Q1, X, Z diaxon carry out with the moving interpolation that turns to simultaneously, rotational angle Q2, meanwhile worm screw rotational angle Q3 finishes the finish turning or the grinding of enveloping worm.Q1=Q2=Q3/i wherein.
Described X, Z two-axle interlocking add main shaft and rotate the processing of carrying out other surfaces of enveloping worm except that helicoid at a high speed.
Described X, Z, C three-shaft linkage carry out helical surface of enveloping worm directly to advance method rough turn, cutter hub is all the time perpendicular to worm axis during the turning helicoid.
Described X, Z, C three-shaft linkage carry out helical surface of enveloping worm directly to advance method rough turn, constant to the distance that moves along Z when rough turn, the worm screw original position is constant, rotational angle is becoming.
Described X, Z, C three-shaft linkage carry out helical surface of enveloping worm directly to advance method rough turn, with the cutoff tool side helicoid of cutting worm screw earlier, reprocess its another side helicoid.
Described X, Y, Z, the moving function of C tetrad are carried out based on the finish turning of the hindley worm of forming principle or the grinding of double enveloping worm.
Worm screw centre-to-centre spacing was not subjected to the restriction of operating center distance when described X, Y, Z, the moving function of C tetrad were carried out the finish turning of enveloping worm or grinding, can machining center apart from 50 to 800 worm screw.
When described X, Y, Z, the moving function of C tetrad are carried out the finish turning of enveloping worm or grinding, clamping can finish two lateral tooth flanks cutting, repair the adverse slope tip relief of type and inlet outlet.
Described X, Y, Z, the worm screw original position was becoming when the moving function of C tetrad was carried out the grinding of enveloping worm, and rotation direction is constant all the time.
Described X, Y, Z, changing when the moving function of C tetrad is carried out the grinding of enveloping worm can processing plane envelope and involute double enveloping worm behind the different emery wheels.
The utility model compared with prior art, simple in structure, novel, easy to operate, safety, working (machining) efficiency height, scope are wide.Can carry out the high speed rotation in addition, the turning grinding is carried out on same lathe, and function is complete, has higher reliability and strong adaptive capacity to environment, and transmission accuracy and machining accuracy are more accurate.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model
Fig. 2 is a vertical view of the present utility model
Fig. 3 is a left view of the present utility model
Fig. 4 is a helicoid turning schematic diagram of the present utility model
Fig. 5 is helicoid Principle of Grinding and Cutting figure of the present utility model
In the accompanying drawing 1 lathe bed, 2 main spindle boxes, (space) 3 spindle motors, 4 spindle encoders, 5 main shafts, 6 chucks, 7 enveloping worms, 8 bistriques, 9 hydraulic pressure tailstocks, 10Z axle servomotor, 11 big palettes, 12X to guide rail, 13X to ball-screw, 14 numerical control rotating platforms, 15 little supporting plates, 16Z to guide rail, 17Z to ball-screw, 18Y axle servomotor, 19X axle servomotor, 20 grinding head motors, 21 emery wheels
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments, and this manufacturing technology is fully aware of to the art technology people.
With centre-to-centre spacing A=125, number of threads 2, gearratio i=20.5 worm screw surrounds the worm gear number of teeth 4.5 axial module m=4.927, root circle of worm arc radius 105.43, tip circle of worm arc radius 97.55, worm screw working portion length 62, the dextrorotation planar double-enveloping worm of base circle diameter (BCD) 78, fully teeth height 7.88 is an example.
The cutting earlier of other sizes puts in place except that the worm spiral face.During helicoid roughing right flank, adopting the width of cutoff tool top sword is 5, less than tooth root groove width 7.19, greater than the tooth top groove width half 4.44.Vertically in worm screw outside locate feed, forward the vertical withdrawing of locating in worm tooth-surface outside to basic circle with basic circle.Because worm screw working portion length is less than base circle diameter (BCD), so avoided occurring connecing the cutter tool marks on worm screw.Calculate during each the rotation and put the angle that turns over when withdrawing point point of a knife is walked circular interpolation from cutter and multiply by the angle that the gearratio worm screw need turn over simultaneously.Knife rest withdraws from worm tooth-surface along the X forward, and worm screw adds to next time and plays cutter position man-hour along being rotated further certain angle counterclockwise, the reverse error of having avoided the worm screw counter-rotating to produce like this, and the worm screw angle position is fixed when beginning when making each cutting simultaneously.What knife rest continued to move to last time plays cutter point then along perpendicular to directions X feed 0.02, and then calculates the angle that need turn over and carry out moving interpolation again, and total depth of cut is 7.35, and cutting number of times is 368 times.The right side machines back tool rest and moves (base circle diameter (BCD) deducts top tread degree) along the Z negative direction, cuts left flank in the same way.
During grinding, take off numerically-controlled slide and base plate, bistrique is installed.Adjusting emery wheel generating surface inclination angle is 13.00 °, moves big or small supporting plate then, rotates panoramic table to assigned address, adjusts the C Shaft angle, makes emery wheel generating surface and worm screw right flank tangent.After finishing, tool setting then carries out four-axle linked grinding motion.The processing instruction is:
G02?G18?U#1?V#2?W#3?A#4?I#5?K#6?F#7
Wherein: worm screw turns over angle #4=Q3, and X, Z diaxon carry out contrary circle interpolation displacement and be respectively #1, #2, and it is Q2=Q1 that its resultant motion turns over angle, and meanwhile numerical control rotating platform drives bistrique and rotates counterclockwise angle #2=Q1.After grinding finished once, numerical control rotating platform withdrawed from along directions X, carried out then:
G01?V-#2?Z#8?A#9?F#7
Wherein: #8 be the worm screw grinding Z is to the position when initial, #9 is that worm screw is rotated further angle, itself and #4 jack per line, this has wherein made the feeding of C axle 0.3 ° by the macroprogram computing.Worm screw has moved to cutter point along directions X and has carried out grinding once more then.Each rotational angle is a fixed value in each grinding process, and other axle plays cutter point fixed-site except that the C axle.Calling the type of repairing, inlet tip relief, outlet tip relief subprogram after grinding is finished processes accordingly.Multistart worm C axle is rotated corresponding angle repeat to get final product, other axle is not had influence.To adjust the bistrique angle be 167.00 ° in the back to treat side processing to put in place, moves to the grinding that the worm screw left end carries out left surface once more after the tool setting.Left flank is repaiied type and tip relief equally, has so just finished the processing of whole tooth surface.

Claims (1)

1. tetrad rotating ring surface-worm numerical control grinding combined machine, comprise lathe body and control system, it is characterized in that by lathe bed (1), main spindle box (2), spindle motor (3), spindle encoder (4), main shaft (5), chuck (6), enveloping worm (7), bistrique (8), hydraulic pressure tailstock (9), Z axle servomotor (10), big palette (11), X is to guide rail (12), X is to ball-screw (13), numerical control rotating platform (14), little supporting plate (15), Z is to guide rail (16), Z is to ball-screw (17), Y-axis servomotor (18), X-axis servomotor (19), grinding head motor (20), emery wheel (21), and bed slide, the numerically-controlled slide element is formed; Described spindle motor (3) is by band drive shaft (5) and enveloping worm (7) rotate around the C axle synchronously, Z axle servomotor (10) moves to guide rail (16) along Z by being with driving ball-screw (17) to drive big palette (11) synchronously, X-axis servomotor (19) drives little supporting plate (15) by shaft coupling driving ball-screw (13) and moves to guide rail (12) along X, Y-axis servomotor (18) rotates around Y-axis by gear drive numerical control rotating platform (14), numerically-controlled slide or bistrique connect firmly on numerical control rotating platform, grinding head motor (20) is by driving emery wheel (21) synchronously around self B axle rotation, handwheel shakes emery wheel and motor is rotated around the A axle together, described X, the A axle is parallel, Z, the C axle is parallel, X, Y, three of Z meet right-handed Cartesian coordinate system.
CN2010206845507U 2010-12-28 2010-12-28 Four-linkage enveloping worm numerical control (NC) grinding composite machine tool Expired - Fee Related CN201906895U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102107300A (en) * 2010-12-28 2011-06-29 上海合纵重工机械有限公司 CNC (computerized numerical control) combined turning and grinding machine tool for four-linkage enveloping worms and processing method thereof
CN102310347A (en) * 2011-09-05 2012-01-11 台州金剑机械制造有限公司 Seven-axis numerical control grinding and shaping equipment for dual conical surface and double enveloping worm
CN103213022A (en) * 2013-03-22 2013-07-24 山东鲁南机床有限公司 Safety protection device of hydraulic chuck
CN104923865A (en) * 2015-06-18 2015-09-23 淮安远航船用设备制造有限公司 Special lathe for worm grinding
CN104923864A (en) * 2015-06-18 2015-09-23 淮安远航船用设备制造有限公司 Special lathe for worm grinding
CN108115222A (en) * 2018-01-05 2018-06-05 上海莱必泰数控机床股份有限公司 A kind of ball globoid worm gear endless screw grinding device
CN110549119A (en) * 2019-09-24 2019-12-10 深圳市万博蜗杆制品有限公司 comprehensive machine tool for machining gear and worm
CN113878179A (en) * 2021-11-03 2022-01-04 重庆机床(集团)有限责任公司 High-precision normal straight-profile worm gear tooth part machining method
CN114643391A (en) * 2022-03-23 2022-06-21 广州数控设备有限公司 Automatic machining method combining milling and grinding aiming at worm

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102107300A (en) * 2010-12-28 2011-06-29 上海合纵重工机械有限公司 CNC (computerized numerical control) combined turning and grinding machine tool for four-linkage enveloping worms and processing method thereof
CN102107300B (en) * 2010-12-28 2013-01-02 上海合纵重工机械有限公司 CNC (computerized numerical control) combined turning and grinding machine tool for four-linkage enveloping worms and processing method thereof
CN102310347A (en) * 2011-09-05 2012-01-11 台州金剑机械制造有限公司 Seven-axis numerical control grinding and shaping equipment for dual conical surface and double enveloping worm
CN103213022A (en) * 2013-03-22 2013-07-24 山东鲁南机床有限公司 Safety protection device of hydraulic chuck
CN104923865A (en) * 2015-06-18 2015-09-23 淮安远航船用设备制造有限公司 Special lathe for worm grinding
CN104923864A (en) * 2015-06-18 2015-09-23 淮安远航船用设备制造有限公司 Special lathe for worm grinding
CN108115222A (en) * 2018-01-05 2018-06-05 上海莱必泰数控机床股份有限公司 A kind of ball globoid worm gear endless screw grinding device
CN110549119A (en) * 2019-09-24 2019-12-10 深圳市万博蜗杆制品有限公司 comprehensive machine tool for machining gear and worm
CN113878179A (en) * 2021-11-03 2022-01-04 重庆机床(集团)有限责任公司 High-precision normal straight-profile worm gear tooth part machining method
CN113878179B (en) * 2021-11-03 2024-04-19 重庆机床(集团)有限责任公司 High-precision normal direction straight profile worm gear tooth part processing method
CN114643391A (en) * 2022-03-23 2022-06-21 广州数控设备有限公司 Automatic machining method combining milling and grinding aiming at worm

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Granted publication date: 20110727

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