CN107088811B - Mechanical polishing system and method for soft belt area of wind power turntable bearing channel - Google Patents

Mechanical polishing system and method for soft belt area of wind power turntable bearing channel Download PDF

Info

Publication number
CN107088811B
CN107088811B CN201710439573.8A CN201710439573A CN107088811B CN 107088811 B CN107088811 B CN 107088811B CN 201710439573 A CN201710439573 A CN 201710439573A CN 107088811 B CN107088811 B CN 107088811B
Authority
CN
China
Prior art keywords
channel
bearing workpiece
grinding
soft belt
feeding system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710439573.8A
Other languages
Chinese (zh)
Other versions
CN107088811A (en
Inventor
杨群浩
李晓翔
周裕兵
宋正常
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU TIANMA PRECISION MACHINERY Co.,Ltd.
Original Assignee
Tianma Chengdu Railway Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianma Chengdu Railway Bearing Co Ltd filed Critical Tianma Chengdu Railway Bearing Co Ltd
Priority to CN201710439573.8A priority Critical patent/CN107088811B/en
Publication of CN107088811A publication Critical patent/CN107088811A/en
Application granted granted Critical
Publication of CN107088811B publication Critical patent/CN107088811B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B24B19/06—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for grinding races, e.g. roller races
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/02—Frames; Beds; Carriages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/20—Drives or gearings; Equipment therefor relating to feed movement

Abstract

The invention discloses a mechanical polishing system and a mechanical polishing method for a wind power turntable bearing channel soft belt area, which comprises a bearing workpiece, an indexable rotating platform and a numerical control machine tool, wherein a channel is arranged on the side part of the inner side of the bearing workpiece, the channel comprises an upper channel and a lower channel, the bearing workpiece is arranged on the indexable rotating platform, and an index plate is arranged on the indexable rotating platform; the numerical control machine tool comprises a tool rest mounting seat, an upper vertical feeding system, a lower vertical feeding system and a horizontal feeding system, wherein the tool rest mounting seat is mounted on the horizontal feeding system, and the horizontal feeding system is slidably mounted on the upper vertical feeding system and the lower vertical feeding system; the tool rest is installed on the tool rest installation seat, the rotating motor is installed inside the tool rest, a power output shaft of the rotating motor is fixedly connected with a rotating main shaft, and a grinding wheel is fixedly connected to the bottom of the rotating main shaft. The polishing depth and the polishing shape of the soft belt area of the channel are easy to guarantee, the polishing uniformity of the channel is good, the roughness of the polished surface is good, the pollution in the processing process is small, and the labor intensity of workers is low.

Description

Mechanical polishing system and method for soft belt area of wind power turntable bearing channel
Technical Field
The invention relates to the field of wind power yaw variable pitch bearing processing, in particular to a mechanical polishing system and method for a soft belt region of a wind power turntable bearing channel.
Background
The wind power turntable bearing is mainly made of 50Mn or 42CrMo, the surface of a channel is subjected to induction quenching heat treatment, tracks of induction heads on the channel cannot be overlapped, otherwise, cracks are generated on the surface of the channel due to secondary quenching, and a soft zone region is generated at the initial end and the tail end of the channel quenching. The soft belt area has lower hardness, the mechanical properties such as contact fatigue strength, wear resistance, elastic limit and the like are inferior to those of a normal area, and the soft belt fails firstly when the bearing works, so that the soft belt area is usually designed into an area with certain depth and shape change in the design of the wind power turntable bearing so as to avoid the failure of the area when the area bears load in a working state. The channel soft belt polishing technology is a novel practical technology generated for realizing the design application. The shape of the channel quenching soft belt polishing area is shown in fig. 2, wherein the channel quenching soft belt polishing area comprises two transition areas 11 and a soft belt polishing area 10 positioned between the two transition areas 11, the soft belt polishing area 10 and the two transition areas 11 are required to be in smooth transition, the soft belt polishing area 10 is ensured to have a certain depth H, the shape of the whole channel surface is consistent, and certain roughness requirements are required on the polishing surface. The polishing total length of the soft belt of the channel is different from the curvature radius of the channel and whether a plugging hole exists or not, but the polishing depth and the length of the transition area 11 are always kept at certain design requirements, the polishing depth is generally required to be 0.2-0.4 mm, and the length of the transition area is half of the diameter of the steel ball. Whether the polishing area is in smooth transition or not directly influences the running stability of the steel ball in the channel, and if the polishing area has a steep high point or a low point, the steel ball can be subjected to certain impact load in the running process, so that the bearing capacity of the channel is influenced, and the bearing fails. Therefore, the smooth transition of the polishing area and the shape of the polishing area are the key points which must be broken through by the channel soft belt polishing technology.
At present, the traditional polishing method comprises two methods of manual relief polishing and mechanical automatic polishing of soft belts:
the manual relief grinding soft belt has the technical advantages of flexible processing, no site limitation, less part clamping and transferring, lower investment cost and no need of specialized machine tools; the method has the defects that the relief grinding depth and the shape of the soft belt are greatly influenced by the skill of workers, the quality of the processing process is unstable, uneven points exist on the relief grinding surface of the soft belt, the relief grinding surface roughness is low, fine abrasive paper is required to be used for secondary polishing, and the dust of a grinding wheel is large in the relief grinding process, so that the health of the workers is influenced.
The mechanical automatic polishing soft belt has the technical advantages that the polishing depth of the channel soft belt is easy to guarantee, the roughness of the polishing surface is better, the pollution in the processing process is small, and the labor intensity of workers is low. The grinding transition region has the defects that the shape of the grinding transition region is greatly influenced by the diameter size of the grinding wheel, the shapes of the transition regions processed by grinding wheels with different diameters are different, the larger the diameter of the grinding wheel is, the smoother the transition region is, the smaller the diameter of the grinding wheel is, and the steeper the transition region is; the shape of the whole soft belt polishing area is influenced by the size of the curvature radius of the channel, the consistency is poor, the smaller the curvature radius of the channel is, the better the consistency is, and the larger the curvature radius of the channel is, the worse the consistency is.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a mechanical polishing system and a mechanical polishing method for a soft belt area of a wind power turntable bearing channel.
The purpose of the invention is realized by the following technical scheme:
a mechanical grinding system for a soft belt area of a wind power turntable bearing channel comprises a bearing workpiece, wherein a channel is arranged on the side portion of the inner side of the bearing workpiece and comprises an upper channel and a lower channel, and a soft belt center line of the channel is arranged in the channel. The mechanical polishing system also comprises an indexable rotating platform and a numerical control machine tool, wherein the bearing workpiece is arranged on the indexable rotating platform, the indexable rotating platform is used for driving the center of the bearing workpiece to rotate, and an index plate is arranged on the indexable rotating platform; the numerical control machine tool comprises a tool rest mounting seat, an up-down vertical feeding system and a horizontal feeding system, wherein the tool rest mounting seat is mounted on the horizontal feeding system, the horizontal feeding system is slidably mounted on the up-down vertical feeding system, the up-down vertical feeding system is used for driving the horizontal feeding system and the tool rest mounting seat to vertically lift up and down, and the horizontal feeding system is used for driving the tool rest mounting seat to horizontally move; the grinding machine is characterized in that a tool rest is installed on the tool rest installation seat, a rotating motor is installed inside the tool rest, a power output shaft of the rotating motor is fixedly connected with a rotating main shaft, and a grinding wheel is fixedly connected to the bottom of the rotating main shaft.
In order to better realize the control of the indexable rotating platform and the numerical control machine, the mechanical polishing system also comprises a control system, wherein the control system is electrically connected with the indexable rotating platform, and the control system is respectively and electrically connected with an upper vertical feeding system, a lower vertical feeding system and a rotating motor of the numerical control machine.
In order to improve the grinding precision, the mechanical grinding system also comprises a compressed air output device, and a compressed air outlet of the compressed air output device is arranged corresponding to the channel.
A mechanical polishing method for a soft belt area of a wind power turntable bearing channel comprises the following steps:
A. the channel of the bearing workpiece is provided with a center line of a quenching soft belt, a channel polishing area is set in the channel of the bearing workpiece, the channel polishing area comprises a soft belt polishing area and transition areas positioned on two sides of the soft belt polishing area, the center line of the soft belt polishing area is the center line of the quenching soft belt, and the two transition areas are symmetrically arranged by taking the center line of the quenching soft belt as the center line; the polishing length of the channel polishing area is L, and the polishing depth of the soft belt polishing area is H;
B. the indexable rotating platform drives the bearing workpiece to rotate around the center of the channel in the forward direction and the reverse direction; before polishing, correspondingly arranging a grinding wheel of the numerical control machine tool at the central line of the quenching soft belt of the channel; when the grinding wheel is polished and rotated, the indexable rotating platform drives the bearing workpiece to rotate by a forward rotation angle P, then the bearing workpiece is driven to rotate by a reverse rotation angle P, and the indexable rotating platform drives the bearing workpiece to rotate by a central angle M which is 2P;
C. setting the maximum rotation center angle M of the bearing workpiece as α ═ 2 x arcsin (L/d), d is the diameter of the raceway of the channel, setting the minimum rotation center angle M of the bearing workpiece as c, calculating the unilateral center angle β ═ 2 (α -c)/2, c ═ 2 x arcsin ((L-2A)/d), β ═ arcsin (L/d) -arcsin ((L-2A)/d), and d is the diameter of the raceway;
D. the grinding wheel is fed in the horizontal direction and the vertical direction simultaneously, the horizontal feeding amount and the vertical feeding amount of the grinding wheel are both f, the integral part of the result obtained by calculating the feeding times N of the grinding wheel in the horizontal direction or the vertical direction according to an (H multiplied by sin 45) DEG/f formula is calculated, and then the rotation central angle reduction angle gamma of the bearing workpiece is calculated according to the following formula, wherein the gamma is β/N;
E. grinding a bearing workpiece for the first time, wherein the rotation center angle of the bearing workpiece is α, and then feeding the grinding wheel in the horizontal direction and the vertical direction at the same time f to perform secondary grinding;
grinding the bearing workpiece for the second time, wherein the rotation center angle of the bearing workpiece is α -2 gamma, and then feeding the grinding wheel in the horizontal direction and the vertical direction at the same time for f before grinding for the third time;
grinding the bearing workpiece for the third time, wherein the rotation center angle of the bearing workpiece is α -4 gamma, and then feeding the grinding wheel in the horizontal direction and the vertical direction at the same time for f and then grinding for the fourth time;
grinding the bearing workpiece for the Nth time, wherein the rotation center angle of the bearing workpiece is α -2 x (N-1) x gamma, and then feeding the grinding wheel in the horizontal direction and the vertical direction simultaneously for f and then grinding for the (N + 1) th time;
and (3) grinding the bearing workpiece for the (N + 1) th time, wherein the rotation center angle of the bearing workpiece is α -2 XNXgamma (2 β), and after the grinding for the (N + 1) th time is finished, finishing the grinding of the whole bearing workpiece.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the polishing depth and the polishing shape of the soft belt area of the channel are easy to guarantee, the polishing uniformity of the channel is good, the width of the transition area is not influenced by the size of the channel and the size of the grinding wheel, the roughness of the polished surface is good, the pollution in the processing process is small, and the labor intensity of workers is low.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial cross-sectional view of a bearing workpiece in the circumferential direction of the channel;
FIG. 3 is a schematic cross-sectional view of a bearing workpiece;
FIG. 4 is a schematic view showing the decreasing of the rotation center angle when the grinding wheel is fed and the bearing workpiece integrally rotates;
fig. 5 is a graph showing a relationship between the grinding length corresponding to the rotation center angle and the change in the rotation center angle and the entire grinding length.
Wherein, the names corresponding to the reference numbers in the drawings are:
1-bearing workpiece, 2-channel, 21-upper channel, 22-lower channel, 3-indexable rotating platform, 4-grinding wheel, 5-rotating spindle, 6-tool rest, 7-numerical control machine tool, 8-compressed air output device, 9-control system, 10-soft belt polishing area, 11-transition area and 12-channel circle center.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
examples
As shown in fig. 1-5, the mechanical grinding system for the soft belt area of the wind power turntable bearing channel comprises a bearing workpiece 1, wherein the inner side of the bearing workpiece 1 is provided with a channel 2, the channel 2 comprises an upper channel 21 and a lower channel 22, and the channel 2 is provided with a channel soft belt central line. The mechanical polishing system also comprises an indexable rotating platform 3 and a numerical control machine tool 7, wherein the bearing workpiece 1 is arranged on the indexable rotating platform 3, the indexable rotating platform 3 is used for driving the bearing workpiece 1 to rotate in the center, and the indexable rotating platform 3 is provided with an index plate which is used for accurately controlling the rotating center angle of the bearing workpiece 1. The numerical control machine tool 7 comprises a tool rest mounting seat, an upper vertical feeding system, a lower vertical feeding system and a horizontal feeding system, wherein the tool rest mounting seat is mounted on the horizontal feeding system, the horizontal feeding system is slidably mounted on the upper vertical feeding system, the upper vertical feeding system and the lower vertical feeding system are used for driving the horizontal feeding system and the tool rest mounting seat to vertically lift, and the horizontal feeding system is used for driving the tool rest mounting seat to horizontally move. The tool rest 6 is installed on the tool rest installing seat, the rotating motor is installed inside the tool rest 6, the power output shaft of the rotating motor is fixedly connected with a rotating main shaft 5, and the bottom of the rotating main shaft 5 is fixedly connected with a grinding wheel 4.
The mechanical polishing system also comprises a control system 9, the control system 9 is electrically connected with the indexable rotating platform 3, the control system 9 is respectively and electrically connected with an upper vertical feeding system, a lower vertical feeding system and a rotating motor of the numerical control machine 7, the control system 9 controls the grinding wheel 4 on the numerical control machine 7 to vertically lift or horizontally move, and the control system 9 also controls the indexable rotating platform 3 to realize the control of the index plate and the accurate control of the rotating center angle of the bearing workpiece 1.
The mechanical polishing system also comprises a compressed air output device 8, and a compressed air outlet of the compressed air output device 8 is arranged corresponding to the channel 2. Compressed air output device 8 is connected with control system 9 electricity, opens compressed air output device 8 through control system 9, and when emery wheel 4 polished the channel 2, compressed air output device 8 in time blown away the dust, has improved the precision of polishing.
A mechanical polishing method for a soft belt area of a wind power turntable bearing channel comprises the following steps:
A. the channel 2 of the bearing workpiece 1 is provided with a center line of a quenching soft belt, a channel polishing area is set in the channel 2 of the bearing workpiece 1 and comprises a soft belt polishing area 10 and transition areas 11 positioned at two sides of the soft belt polishing area 10, the center line of the soft belt polishing area 10 is the center line of the quenching soft belt, and the two transition areas 11 are symmetrically arranged by taking the center line of the quenching soft belt as the center line; the polishing length of the channel polishing area is L, and the polishing depth of the soft belt polishing area 10 is H;
B. the indexable rotating platform 3 drives the bearing workpiece 1 to rotate around the center of the channel 2 in the forward direction and the reverse direction; before polishing, correspondingly arranging a grinding wheel 4 of a numerical control machine tool 7 at the center line of a quenching soft belt of the channel 2; when the grinding wheel 4 is polished and rotated, the indexable rotating platform 3 drives the bearing workpiece 1 to rotate by a forward rotation angle P, then drives the bearing workpiece 1 to rotate by a reverse rotation angle P, and the indexable rotating platform 3 drives the bearing workpiece 1 to rotate by a central angle M which is 2P;
C. setting the maximum rotation center angle M of the bearing workpiece 1 as α to be 2 x arcsin (L/d), d to be the diameter of a raceway of the channel 2, setting the minimum rotation center angle M of the bearing workpiece 1 as c, and calculating the unilateral center angle β of the transition region as α -c/2, c as 2 x arcsin ((L-2A)/d, β as arcsin (L/d) -arcsin ((L-2A)/d, d to be the diameter of the raceway;
as shown in fig. 5, the groove 2 is circular, the groove 2 has a groove center 12, the rotation center angle M is relative to the groove center 12, the maximum rotation center angle α of the bearing workpiece 1 is 2 × arcsin (L/d), d is the raceway diameter, L is the grinding length, the minimum rotation center angle c, c is 2 × arcsin ((L-2A)/d, d is the raceway diameter, L is the grinding length, a is the grinding length corresponding to the interval from the maximum rotation center angle to the minimum rotation center angle of the bearing workpiece 1, the single-side center angle β of the transition region of the bearing workpiece 1 is calculated as arcsin (L/d) -arcsin ((L-2A)/d, d is the raceway diameter, a is the grinding length corresponding to the interval from the maximum rotation center angle to the minimum rotation center angle, and L is the grinding length.
D. The grinding wheel 4 is fed simultaneously in the horizontal direction and the vertical direction, the horizontal feeding amount and the vertical feeding amount of the grinding wheel 4 are both f, the integral part of the result obtained by calculating the feeding times N of the grinding wheel 4 in the horizontal direction or the vertical direction according to the formula H multiplied by sin45 degrees/f is calculated, and then the rotation central angle reduction angle gamma of the bearing workpiece 1 is calculated according to the following formula, wherein the gamma is β/N;
E. grinding the bearing workpiece 1 for the first time, wherein the rotation center angle of the bearing workpiece 1 is α, and then, feeding the grinding wheel 4 in the horizontal direction and the vertical direction at the same time for f and then grinding for the second time;
carrying out secondary grinding on the bearing workpiece 1, wherein the rotation center angle of the bearing workpiece 1 is α -2 gamma, and then feeding the grinding wheel 4 in the horizontal direction and the vertical direction at the same time f and then carrying out tertiary grinding;
carrying out third grinding on the bearing workpiece 1, wherein the rotation center angle of the bearing workpiece 1 is α -4 gamma, and then feeding the grinding wheel 4 in the horizontal direction and the vertical direction at the same time f to carry out fourth grinding;
grinding the bearing workpiece 1 for the Nth time, wherein the rotation center angle of the bearing workpiece 1 is α -2 XN-1 Xgamma, and then feeding the grinding wheel 4 in the horizontal direction and the vertical direction at the same time for f before grinding for the (N + 1) th time;
and (3) grinding the bearing workpiece 1 for the (N + 1) th time, wherein the rotation center angle of the bearing workpiece 1 is α -2 XNXGamma which is 2 β, and after the grinding for the (N + 1) th time is finished, finishing the grinding of the whole bearing workpiece 1.
The polishing depth and the polishing shape of the soft belt area of the channel are easy to guarantee, the polishing uniformity of the channel is good, the width of the transition area is not influenced by the size of the channel and the size of the grinding wheel, the roughness of the polished surface is good, the pollution in the processing process is small, and the labor intensity of workers is low.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (1)

1. A mechanical polishing method for a soft belt area of a wind power turntable bearing channel is characterized by comprising the following steps: the mechanical polishing system for the wind power turntable bearing channel soft belt region comprises a bearing workpiece (1), a channel (2) is arranged on the side portion of the inner side of the bearing workpiece (1), the channel (2) comprises an upper channel (21) and a lower channel (22), a channel soft belt central line is arranged in the channel (2), the mechanical polishing system further comprises an indexable rotating platform (3) and a numerical control machine tool (7), the bearing workpiece (1) is arranged on the indexable rotating platform (3), the indexable rotating platform (3) is used for driving the center of the bearing workpiece (1) to rotate, and an index plate is arranged on the indexable rotating platform (3); the numerical control machine tool (7) comprises a tool rest mounting seat, an upper and lower vertical feeding system and a horizontal feeding system, wherein the tool rest mounting seat is mounted on the horizontal feeding system, the horizontal feeding system is slidably mounted on the upper and lower vertical feeding system, the upper and lower vertical feeding system is used for driving the horizontal feeding system and the tool rest mounting seat to vertically lift up and down, and the horizontal feeding system is used for driving the tool rest mounting seat to horizontally move; a tool rest (6) is mounted on the tool rest mounting seat, a rotating motor is mounted inside the tool rest (6), a power output shaft of the rotating motor is fixedly connected with a rotating main shaft (5), and the bottom of the rotating main shaft (5) is fixedly connected with a grinding wheel (4);
the automatic indexing and rotating device is characterized by further comprising a control system (9), wherein the control system (9) is electrically connected with the indexable rotating platform (3), and the control system (9) is electrically connected with an upper vertical feeding system, a lower vertical feeding system and a horizontal feeding system of the numerical control machine (7) and a rotating motor respectively; the device also comprises a compressed air output device (8), wherein a compressed air outlet of the compressed air output device (8) is arranged corresponding to the channel (2);
the method comprises the following steps:
A. the channel (2) of the bearing workpiece (1) is provided with a center line of a quenching soft belt, a channel polishing area is set in the channel (2) of the bearing workpiece (1), the channel polishing area comprises a soft belt polishing area (10) and transition areas (11) positioned at two sides of the soft belt polishing area (10), the center line of the soft belt polishing area (10) is the center line of the quenching soft belt, and the two transition areas (11) are symmetrically arranged by taking the center line of the quenching soft belt as the center line; the polishing length of the channel polishing area is L, and the polishing depth of the soft belt polishing area (10) is H;
B. the indexable rotary platform (3) drives the bearing workpiece (1) to rotate around the center of the channel (2) in the forward direction and the reverse direction; before polishing, arranging a grinding wheel (4) of a numerical control machine tool (7) at the central line of a quenching soft belt of the channel (2) correspondingly; when the grinding wheel (4) is used for grinding and rotating, the indexable rotating platform (3) drives the bearing workpiece (1) to rotate by a forward rotation angle P, then the bearing workpiece (1) is driven to rotate by a reverse rotation angle P, and the indexable rotating platform (3) drives the bearing workpiece (1) to rotate by a central angle M which is 2P;
C. setting the maximum rotation center angle M of the bearing workpiece (1) as α to 2 x arcsin (L/d), d is the diameter of a raceway of the channel (2), setting the minimum rotation center angle M of the bearing workpiece (1) as c, calculating the unilateral center angle β of a transition region as (α -c)/2, c as 2 x arcsin ((L-2A)/d), β as arcsin (L/d) -arcsin ((L-2A)/d), and d is the diameter of the raceway;
D. feeding the grinding wheel (4) in the horizontal direction and the vertical direction simultaneously, wherein the horizontal feeding amount and the vertical feeding amount of the grinding wheel (4) are both f, calculating the feeding times N of the grinding wheel (4) in the horizontal direction or the vertical direction according to an (H multiplied by sin45 DEG)/f formula, and obtaining an integral part of the calculated result, and then calculating the rotation central angle reduction angle gamma of the bearing workpiece (1) according to the following formula, wherein the gamma is β/N;
E. grinding a bearing workpiece (1) for the first time, wherein the rotation center angle of the bearing workpiece (1) is α, and then feeding a grinding wheel (4) in the horizontal direction and the vertical direction at the same time f before grinding for the second time;
grinding the bearing workpiece (1) for the second time, wherein the rotation center angle of the bearing workpiece (1) is α -2 gamma, and then feeding the grinding wheel (4) in the horizontal direction and the vertical direction at the same time f before grinding for the third time;
grinding the bearing workpiece (1) for the third time, wherein the rotation center angle of the bearing workpiece (1) is α -4 gamma, and then feeding the grinding wheel (4) in the horizontal direction and the vertical direction at the same time f before grinding for the fourth time;
grinding the bearing workpiece (1) for the Nth time, wherein the rotation center angle of the bearing workpiece (1) is α -2 x (N-1) x gamma, and then feeding the grinding wheel (4) in the horizontal direction and the vertical direction simultaneously for f and then grinding for the (N + 1) th time;
and (3) grinding the bearing workpiece (1) for the (N + 1) th time, wherein the rotation center angle of the bearing workpiece (1) is α -2 XNXGamma which is 2 β, and after the grinding for the (N + 1) th time is finished, finishing the grinding of the whole bearing workpiece (1).
CN201710439573.8A 2017-06-12 2017-06-12 Mechanical polishing system and method for soft belt area of wind power turntable bearing channel Active CN107088811B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710439573.8A CN107088811B (en) 2017-06-12 2017-06-12 Mechanical polishing system and method for soft belt area of wind power turntable bearing channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710439573.8A CN107088811B (en) 2017-06-12 2017-06-12 Mechanical polishing system and method for soft belt area of wind power turntable bearing channel

Publications (2)

Publication Number Publication Date
CN107088811A CN107088811A (en) 2017-08-25
CN107088811B true CN107088811B (en) 2020-05-22

Family

ID=59639226

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710439573.8A Active CN107088811B (en) 2017-06-12 2017-06-12 Mechanical polishing system and method for soft belt area of wind power turntable bearing channel

Country Status (1)

Country Link
CN (1) CN107088811B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109571151B (en) * 2018-12-25 2021-07-23 中国航发哈尔滨轴承有限公司 Fine grinding processing method for integral peach-shaped channel of outer ring of four-point contact bearing
CN113927415A (en) * 2021-09-23 2022-01-14 沈阳化工大学 Grinding and polishing device for inner raceway of outer ring of single-row tapered roller bearing
CN114102349A (en) * 2021-11-23 2022-03-01 江阴市恒润传动科技有限公司 Portable soft belt polishing equipment for wind power generation slewing bearing

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1084786A1 (en) * 1999-09-17 2001-03-21 The Gleason Works Method of dressing an internally or externally toothed tool for finishing gear flanks
CN201970177U (en) * 2010-11-18 2011-09-14 江阴嘉鑫风电轴承有限公司 Grinding machine modified from vertical lathe
CN102463515A (en) * 2010-11-09 2012-05-23 上海欧际柯特回转支承有限公司 One-step form grinding method for double races
CN104647170A (en) * 2015-03-10 2015-05-27 洛阳新强联回转支承股份有限公司 Grinding tool and grinding method for three-row roller revolving support raceway soft belt
CN205415322U (en) * 2015-12-31 2016-08-03 瓦房店轴承集团有限责任公司 Raceway hydraulic pressure circular arc grinding wheel dresser in accurate sphere of vertical roller mill bed
CN106271973A (en) * 2015-05-28 2017-01-04 江苏万达特种轴承有限公司 The method of three-dimensional feeding grinding abnormity raceway groove and instrument

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1084786A1 (en) * 1999-09-17 2001-03-21 The Gleason Works Method of dressing an internally or externally toothed tool for finishing gear flanks
CN102463515A (en) * 2010-11-09 2012-05-23 上海欧际柯特回转支承有限公司 One-step form grinding method for double races
CN201970177U (en) * 2010-11-18 2011-09-14 江阴嘉鑫风电轴承有限公司 Grinding machine modified from vertical lathe
CN104647170A (en) * 2015-03-10 2015-05-27 洛阳新强联回转支承股份有限公司 Grinding tool and grinding method for three-row roller revolving support raceway soft belt
CN106271973A (en) * 2015-05-28 2017-01-04 江苏万达特种轴承有限公司 The method of three-dimensional feeding grinding abnormity raceway groove and instrument
CN205415322U (en) * 2015-12-31 2016-08-03 瓦房店轴承集团有限责任公司 Raceway hydraulic pressure circular arc grinding wheel dresser in accurate sphere of vertical roller mill bed

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
《风电转盘轴承沟道软带打磨工艺及检测技术》;柳书敏;《轴承》;20140630(第6期);第20-21页，附图1-3 *
柳书敏.《风电转盘轴承沟道软带打磨工艺及检测技术》.《轴承》.2014,(第6期),第20-21页，附图1-3. *

Also Published As

Publication number Publication date
CN107088811A (en) 2017-08-25

Similar Documents

Publication Publication Date Title
CN107088811B (en) Mechanical polishing system and method for soft belt area of wind power turntable bearing channel
CN100343017C (en) Process and appts. for grinding centric pivot pins of crankshafts
CN112108955B (en) Green environment-friendly steel structure building welding part forming treatment device and treatment process
CN102490097A (en) Adjustable worktable for guideway grinder
CN101468444A (en) Lumber sanding grinder
CN102528665A (en) Novel numerical-control grinding wheel dressing device
CN105290927B (en) A kind of high accuracy circular cambered surface grinding attachment
CN203973341U (en) A kind of Large Sand band polishing machine of processing deflector roll
CN219444155U (en) Microalloyed roller repairing and material adding device
CN202878067U (en) Steel tube grinding device with multiple grinding heads
CN219075248U (en) Four-grinding-head ultrasonic pneumatic high-precision internal grinding machine
CN204771971U (en) Diamond segments's multistation grinds arc device
CN101125412A (en) Grinding and cutting method for disk like part end face groove
CN206253653U (en) The horizontal truning fixture of milling machine
CN2860732Y (en) Grinding wheel fixing chuck for steel rail polishing
CN206605323U (en) A kind of floating grinding device
CN205817555U (en) A kind of pay-off of multi-angle Full-automatic polishing machine
CN204036260U (en) A kind of digital control grinder grinding wheel trimmer
CN106863037A (en) A kind of floating grinding device
CN209850573U (en) Steel pipe grinding device
CN209811241U (en) Numerical control lathe with grinding function
CN103894908B (en) The rotating mechanism of frame in a kind of belt grinder
CN204913537U (en) Pressure arm shaping numerically control grinder
CN110340774A (en) High-precision deep groove ball bearing bear inner ring grooved railway and internal-and external diameter composite grinding device and method
CN201195274Y (en) Compressor concave valve plate grinding mill

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20211123

Address after: 610306 1st floor, building 5, 143 Xiabei street, Chengxiang Town, Qingbaijiang District, Chengdu City, Sichuan Province

Patentee after: CHENGDU TIANMA PRECISION MACHINERY Co.,Ltd.

Address before: 610000 No. 143, Xiabei street, Chengxiang Town, Qingbaijiang District, Chengdu, Sichuan

Patentee before: TIANMA (CHENGDU) RAILWAY BEARING Co.,Ltd.