CN102672282A - Grinding wheel spindle box for numerical control spiral bevel gear grinding machine - Google Patents

Grinding wheel spindle box for numerical control spiral bevel gear grinding machine Download PDF

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Publication number
CN102672282A
CN102672282A CN2012101858735A CN201210185873A CN102672282A CN 102672282 A CN102672282 A CN 102672282A CN 2012101858735 A CN2012101858735 A CN 2012101858735A CN 201210185873 A CN201210185873 A CN 201210185873A CN 102672282 A CN102672282 A CN 102672282A
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China
Prior art keywords
grinding wheel
wheel spindle
gear
grinding
spindle
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CN2012101858735A
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CN102672282B (en
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王秀梅
王景召
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General Technology Group Tianjin First Machine Tool Co ltd
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Tianjin No 1 Machine Tool Works
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Publication of CN102672282A publication Critical patent/CN102672282A/en
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Publication of CN102672282B publication Critical patent/CN102672282B/en
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Abstract

The invention relates to a grinding wheel spindle box for a numerical control spiral bevel gear grinding machine, which is characterized by comprising a grinding wheel spindle, an eccentric spindle, a spindle motor and a hydraulic locking device, wherein the hydraulic locking device is fixed at the upper end of a grinding wheel spindle box body; the spindle motor is connected with a first transmission shaft; a transmission gear is fixed on the first transmission shaft; the transmission gear is meshed with a second gear; the grinding wheel spindle is arranged in an inner hole of the eccentric spindle; a servo motor is connected with a second transmission shaft; a third gear is arranged on the second transmission shaft; the third gear is meshed with a first gear; the eccentric spindle is arranged in an inner hole of a shaft sleeve; an online dynamic balance device is arranged in an inner hole of the grinding wheel spindle; and a grinding wheel is arranged at the front end of the grinding wheel spindle by a flange plate. The grinding wheel spindle box has the advantages that due to the adoption of a double-shaft structure, grinding fluid can enter a grinding region to take cooling and grinding effects on the surface of the grinding wheel and a ground gear; the eccentricity of the grinding wheel spindle is automatically regulated by the online dynamic balance device; the processing accuracy and efficiency are improved; and the service life of a machine tool is prolonged.

Description

Numerical control helical bevel gear gear grinding machines grinding wheel spindle case
Technical field
The invention belongs to the hypoid generating machine technical field, particularly relate to a kind of numerical control helical bevel gear gear grinding machines grinding wheel spindle case.
Background technology
Numerical control tooth grinder for spiral bevel gear is used at a high speed, grinding spiral bevel gear accurately, its objective is the heat treated distortion of profile shifted gear, improves tooth accuracy and fineness, the requirement that reach stable drive, reduces noise and improve precision.Emery wheel is the essential tool of gear grinding machines, in order to guarantee accurate size and the smooth finish surface after the gear grinding, must prevent the vibration of emery wheel in grinding process.Because being a large amount of particles by skewness, grinding wheel structure constitutes; The inborn imbalance of emery wheel can't be avoided causing certain off-centre vibration; And the imbalance of the uneven thickness of the degree of eccentricity that emery wheel is installed, emery wheel, main shaft and emery wheel be to the absorption of cooling fluid etc., can bigger vibration, and these vibrations not only can have influence on the crudy of gear grinding machines; Also can shorten the main shaft life-span and the wheel life of gear grinding machines, increase emery wheel correction number of times and repair adamantine consumption etc.In addition, the adjustment of the balance of emery wheel is to adjust emery wheel adjustment piece through balancing stand, is when changing new emery wheel, to carry out generally speaking, and dynamically just can not adjusting emery wheel down.
Summary of the invention
The present invention improves machining accuracy and efficient, is convenient to adjust and can prolongs the lathe numerical control helical bevel gear gear grinding machines grinding wheel spindle case in service life for the technical problem that exists in the solution known technology provides a kind of.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
Numerical control helical bevel gear gear grinding machines grinding wheel spindle case, it is characterized in that: the grinding wheel spindle case comprises: grinding wheel spindle, eccentric main axis, spindle motor and hydraulic locking apparatus, said hydraulic locking apparatus are fixed on grinding wheel spindle casing upper end; Said spindle motor is connected with first power transmission shaft through first shaft coupling, fixed conveyor gear on first power transmission shaft, and travelling gear and be installed in second gears engaged on the grinding wheel spindle is in the endoporus of grinding wheel spindle through the bearings and the eccentric main axis of packing into; Servomotor is connected with second power transmission shaft through second shaft coupling; The 3rd gear is installed on second power transmission shaft; The 3rd gear be installed in first gears engaged on the eccentric main axis; In the endoporus of said eccentric main axis through the bearings and the axle sleeve of packing into, said axle sleeve is installed on the grinding wheel spindle casing; The on-line dynamic balancing device is housed in the endoporus of grinding wheel spindle, and the grinding wheel spindle front end is equipped with emery wheel through ring flange.
The present invention can also adopt following technical scheme:
Said on-line dynamic balancing device comprises: built-in type balancing head, emitting head, controller, AE card, vibrating sensor and balanced cable; Said built-in type balancing head is installed in the grinding wheel spindle endoporus; Said emitting head is fixed on grinding wheel spindle in the grinding wheel spindle rear end; Be provided with the gap of 3mm between said emitting head and the vibrating sensor, said controller and AE card all are arranged in the electrical control cubicles.
Advantage and good effect that the present invention has are: because technique scheme is adopted in invention; Be that the grinding wheel spindle case adopts grinding wheel spindle and eccentric main axis cross-compound arrangement; In the grinding wheel spindle case, be provided with the on-line dynamic balancing device, grinding wheel spindle is packed in the eccentric main axis endoporus, make grinding wheel spindle in rotation, also can follow eccentric main axis and revolve round the sun together; Produce an eccentric motion, make the inside and outside conical surface of emery wheel replace intermittent grinding driven pulley concave surface and convex surface.The advantage of this kind structure is to make grinding fluid get into grinding area, plays cooling and ablation to wheel face with by the roll flute wheel.In addition, intermittent grinding has reduced the contact area of emery wheel work, helps preventing smear metal obstruction wheel face micropore, reduces grinding temperature; When the degree of eccentricity of grinding wheel spindle reaches a certain amount of, the degree of eccentricity of regulating grinding wheel spindle through the on-line dynamic balancing device automatically.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an on-line dynamic balancing apparatus structure sketch map of the present invention.
Among the figure: 1, spindle motor; 2, first shaft coupling; 3, first power transmission shaft; 4, clutch shaft bearing; 5, travelling gear; 6, hydraulic cylinder; 7, piston; 8, grinding wheel spindle casing; 9, second bearing; 10, axle sleeve; 11, first ring flange; 12, second ring flange; 13, end cap; 14, on-line dynamic balancing device; 14-1, built-in type balancing head; 14-2, emitting head; 14-3, controller; 14-4, AE card; 14-5, vibrating sensor; 14-6, balanced cable; 15, eccentric main axis; 16, grinding wheel spindle; 17, the 3rd bearing; 18, the 3rd ring flange; 19, first gear; 20, second gear; 21, the 3rd gear; 22, second power transmission shaft; 23, second shaft coupling; 24, servomotor; 25, adjusting pad.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1 and Fig. 2; Numerical control helical bevel gear gear grinding machines grinding wheel spindle case; The grinding wheel spindle case comprises: grinding wheel spindle 16, eccentric main axis 15, spindle motor 1 and hydraulic locking apparatus; Hydraulic locking apparatus is fixed on grinding wheel spindle casing 8 upper ends, and said hydraulic locking apparatus comprises hydraulic cylinder 6 and piston 7.Said spindle motor 1 is connected with first power transmission shaft 3 through first shaft coupling 2; And it is fixing through clutch shaft bearing 4; Fixed conveyor gear 5 on first power transmission shaft; Travelling gear and second gear, 20 engagements that are installed on the grinding wheel spindle are in the endoporus of grinding wheel spindle through 9 supports of second bearing and the eccentric main axis of packing into.Servomotor 24 is connected with second power transmission shaft 22 through second shaft coupling 23, is meshed with first gear 19 on being installed in eccentric main axis at installation the 3rd gear 21, the three gears on second power transmission shaft, and first gear 19 is fixed on the 3rd ring flange 18.In the endoporus of said eccentric main axis through 17 supports of the 3rd bearing and the axle sleeve 10 of packing into, said axle sleeve 10 is installed on the grinding wheel spindle casing; The grinding wheel spindle front end is equipped with emery wheel through ring flange.The grinding wheel spindle front end is equipped with first ring flange 11 and second ring flange 12 and fixing through end cap 13 successively, and said first ring flange and second ring flange adopt maze-type structure, get into so that prevent impurity.On-line dynamic balancing device 14 is housed in the endoporus of grinding wheel spindle; Said on-line dynamic balancing device comprises: built-in type balancing head 14-1, emitting head 14-2, controller 14-3, AE card 14-4, vibrating sensor 14-5 and balanced cable 14-6; Said built-in type balancing head is installed in the endoporus of grinding wheel spindle front end; Said emitting head is fixed on the grinding wheel spindle rear end; Vibrating sensor is fixed on the case lid, is provided with the gap of 3mm between said emitting head and the vibrating sensor, and said controller, AE card all are arranged in the electrical control cubicles.
The operation principle of on-line dynamic balancing device is:
When emery wheel rotates and add under the cooling fluid absorption situation; 14-5 records vibratory output through vibrating sensor; Press speed of grinding wheel spindle filtering by controller 14-3; Two balancing weights in the control built-in type balancing head quick and precisely move two balancing weights and compensate unbalanced tram, and then reduce vibration fast.The built-in type balancing head adopts " mass block structure up and down ", and two semicircle masses are concentric, but different radii, Different Weight, reaches the purpose of balance through the circumferential position that changes two semicircle masses.Vibrating sensor is the indispensable part of on-line dynamic balancing device, and according to the vibration amplitude that it monitors, controller moves to reach balance through the motor-driven balance weight of special algorithm controls built-in type balancing head in orbit.Sonar (ultrasonic) signal (being called for short the AE monitoring usually); Rely on its special-purpose sonar signal energy technologies; Monitor originating from when the process medium plain emery wheel contacts with the diamond trimming wheel the grinding of workpiece the ultra-high frequency signal; Can easy, the AE monitoring system be set with saving time, reach control and optimized the grinding process purpose.
The grinding wheel spindle front end is equipped with emery wheel through ring flange.Said grinding wheel spindle is driven by spindle motor, and eccentric main axis is equipped with hydraulic locking apparatus by driven by servomotor on the grinding wheel spindle case.When not needing eccentric motion, eccentric shaft is locked through the hydraulic cylinder and the piston of hydraulic locking apparatus.
Because the grinding wheel spindle case adopts grinding wheel spindle and eccentric main axis cross-compound arrangement, in spindle motor driven gear transmission process, gear also can produce eccentric motion.At present the pressure angle of standard is 20 °, when speed than higher the time, the high-speed motion of gear has off-centre again, the noise ratio that can produce is bigger, so the spindle of this mechanism has adopted 14.5 ° pressure angle gear.

Claims (2)

1. numerical control helical bevel gear gear grinding machines grinding wheel spindle case, it is characterized in that: the grinding wheel spindle case comprises: grinding wheel spindle, eccentric main axis, spindle motor and hydraulic locking apparatus, said hydraulic locking apparatus are fixed on grinding wheel spindle casing upper end; Said spindle motor is connected with first power transmission shaft through first shaft coupling, fixed conveyor gear on first power transmission shaft, and travelling gear and be installed in second gears engaged on the grinding wheel spindle is in the endoporus of grinding wheel spindle through the bearings and the eccentric main axis of packing into; Servomotor is connected with second power transmission shaft through second shaft coupling; The 3rd gear is installed on second power transmission shaft; The 3rd gear be installed in first gears engaged on the eccentric main axis; In the endoporus of said eccentric main axis through the bearings and the axle sleeve of packing into, said axle sleeve is installed on the grinding wheel spindle casing; The on-line dynamic balancing device is housed in the endoporus of grinding wheel spindle, and the grinding wheel spindle front end is equipped with emery wheel through ring flange.
2. numerical control helical bevel gear gear grinding machines grinding wheel spindle case according to claim 1; It is characterized in that: said on-line dynamic balancing device comprises: built-in type balancing head, emitting head, controller, AE card, vibrating sensor and balanced cable; Said built-in type balancing head is installed in the grinding wheel spindle endoporus; Said emitting head is fixed on grinding wheel spindle in the grinding wheel spindle rear end, is provided with the gap of 3mm between said emitting head and the vibrating sensor, and said controller and AE card all are arranged in the electrical control cubicles.
CN201210185873.5A 2012-06-07 2012-06-07 Grinding wheel spindle box for numerical control spiral bevel gear grinding machine Active CN102672282B (en)

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CN201210185873.5A CN102672282B (en) 2012-06-07 2012-06-07 Grinding wheel spindle box for numerical control spiral bevel gear grinding machine

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Application Number Priority Date Filing Date Title
CN201210185873.5A CN102672282B (en) 2012-06-07 2012-06-07 Grinding wheel spindle box for numerical control spiral bevel gear grinding machine

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CN102672282B CN102672282B (en) 2014-05-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103084670A (en) * 2013-02-05 2013-05-08 长沙哈量凯帅精密机械有限公司 Machine tool for machining large gear in spiral bevel gear pair
CN106944679A (en) * 2015-10-05 2017-07-14 利渤海尔齿轮技术有限公司 Processing head with bascule
CN113953902A (en) * 2021-11-25 2022-01-21 江苏特贝尔精密机械科技有限公司 Compact structure's high accuracy excircle grinding machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08267153A (en) * 1995-03-28 1996-10-15 Hitachi Metals Ltd Mechanism for adjusting balance of rotation
CN201471017U (en) * 2009-08-13 2010-05-19 天津第一机床总厂 Eccentric main shaft mechanism of gear grinding machine of numerical control spiral bevel gear
CN201645321U (en) * 2010-04-07 2010-11-24 长春工业大学 Grinding wheel dynamic-balance test control device
CN202622078U (en) * 2012-06-07 2012-12-26 天津第一机床总厂 Numerical control grinding wheel spindle box of spiral bevel gear grinding machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08267153A (en) * 1995-03-28 1996-10-15 Hitachi Metals Ltd Mechanism for adjusting balance of rotation
CN201471017U (en) * 2009-08-13 2010-05-19 天津第一机床总厂 Eccentric main shaft mechanism of gear grinding machine of numerical control spiral bevel gear
CN201645321U (en) * 2010-04-07 2010-11-24 长春工业大学 Grinding wheel dynamic-balance test control device
CN202622078U (en) * 2012-06-07 2012-12-26 天津第一机床总厂 Numerical control grinding wheel spindle box of spiral bevel gear grinding machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103084670A (en) * 2013-02-05 2013-05-08 长沙哈量凯帅精密机械有限公司 Machine tool for machining large gear in spiral bevel gear pair
CN106944679A (en) * 2015-10-05 2017-07-14 利渤海尔齿轮技术有限公司 Processing head with bascule
CN113953902A (en) * 2021-11-25 2022-01-21 江苏特贝尔精密机械科技有限公司 Compact structure's high accuracy excircle grinding machine
CN113953902B (en) * 2021-11-25 2024-04-02 江苏特贝尔精密机械科技有限公司 High-precision cylindrical grinding machine with compact structure

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Address after: 300385 No.11, Zhuyuan Road, Dasi high tech Industrial Park, Xiqing Economic Development Zone, Xiqing District, Tianjin

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Address before: No. 11, Chuyuan Road, Dasi Hi tech Industrial Park, Xiqing Economic Development Zone, Xiqing District, Tianjin, 300385

Patentee before: Tianjin First Machine Tool Co.,Ltd.

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