CN104889888A - Grinding wheel constant linear speed control system and method - Google Patents
Grinding wheel constant linear speed control system and method Download PDFInfo
- Publication number
- CN104889888A CN104889888A CN201510262118.6A CN201510262118A CN104889888A CN 104889888 A CN104889888 A CN 104889888A CN 201510262118 A CN201510262118 A CN 201510262118A CN 104889888 A CN104889888 A CN 104889888A
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- Prior art keywords
- grinding wheel
- controller
- diameter
- displacement
- frequency converter
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Classifications
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- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/006—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention discloses a grinding wheel constant linear speed control system and method. The grinding wheel constant linear speed control system comprises a grinding wheel and a grinding wheel dresser and also comprises a displacement sensor, a controller and a frequency converter; the displacement of the grinding wheel dresser is detected through the displacement sensor; the frequency converter is connected with a rotating motor and the grinding wheel is driven by the rotating motor to rotate; the controller is electrically connected with the displacement sensor and the frequency converter; detection data of the displacement sensor are received and a control signal is sent to the frequency converter through the controller; a main shaft of the grinding wheel is connected with an output shaft of the rotating motor through a belt. The grinding wheel constant linear speed control method specifically comprises the following steps of receiving the displacement of the grinding wheel dresser, namely the change of the diameter of the grinding wheel, through the controller; performing comparison on the previous time of diameter of the grinding wheel and the change to obtain the current diameter of the grinding wheel; obtaining the motor rotating speed corresponding to the required rotating speed of the current grinding wheel through calculation; controlling the frequency converter to execute the speed regulation through the controller.
Description
Technical field
The present invention relates to grinding machine control technology, be specifically related to a kind of grinder wheel control by permanent velocity system and control method.
Background technology
The material that grinding machine energy workhardness is higher, as hardened steel, carbide alloy etc.; Also can work brittleness material, as glass, granite.Grinding machine can do high accuracy and the very little grinding of surface roughness, also can carry out high efficiency grinding, as high-rate grinding etc.Standard mechanical machining uses grinding machine, and emery wheel motor all runs by conventional start-up circuit.Operate according to rated speed after motor start-up, because line voltage has certain fluctuation, emery wheel workpiece friction load constantly changes, capital affects motor speed error, standard emery wheel motor start circuit generally only has a kind of process velocity, be difficult to adapt to different workpieces size requirements difference processing relative linear velocity, to such an extent as to institute process the very difficult guarantee of work pieces process precision.Therefore from raising crudy working (machining) efficiency, the aspects such as economize energy are considered, Application of Frequency Conversion in grinding machine, can be received promising result by prior art proposition.But frequency converter only can ensure that the rotating speed that motor exports is accurate, but because emery wheel uses a period of time to need to repair wheel face.
Dresser carries out to grinder wheel the aid that size, shape, geometric angle etc. repair by diamond pen.Dresser is assemblied on surface grinding machine, universal cutter grinder, the various shaping emery wheels that finishing is made up of straight line and circular arc are with the needs of satisfied processing, dresser and slip gauge are with the use of obtaining required convex R and the precise angle emery wheel of recessed R, thickness trimmer, synchronous dresser can the thickness of trimming wheel and both sides, and the structure trimming wheel of dresser itself can reach very accurate size.Certainly lead to change for its diameter of emery wheel after finishing, if now motor also continues to use original output speed, so the linear velocity of emery wheel can change, and causes the workpiece produced undesirable.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of grinder wheel control by permanent velocity system and control method.
Technical scheme of the present invention is: a kind of grinder wheel control by permanent velocity system, comprise emery wheel and dresser, also comprise the displacement transducer detecting dresser displacement, and a controller, the frequency converter be connected with the electric rotating machine driving emery wheel to rotate, described controller is electrically connected with displacement transducer and frequency converter respectively, and controller accepts the detection data of displacement transducer and transmits control signal to frequency converter, the main shaft of described emery wheel is connected by the output shaft of belt with described electric rotating machine.
Further improvement of the present invention comprises:
Described displacement transducer comprises a prototype gear, and installs and the angular transducer on described prototype gear; Described prototype gear is connected with the turn-screw screw of trimmer.
Dresser is regulated by turn-screw, and described turn-screw comprises the adjusting portion being positioned at grinding machine inside and the measurement section being positioned at grinding machine outside, and measurement section comprises connecting axle, adjusting knob and an angular transducer; Connect adjusting portion by described connecting axle one end, the other end is connected with an adjusting knob.
The length of described measurement section is not less than 50mm.
Another object of the present invention is to provide a kind of control method as above-mentioned grinder wheel control by permanent velocity system, specifically comprise the following steps: controller receives the displacement of dresser, the i.e. variable quantity of grinding wheel diameter, the grinding wheel diameter of a upper time was compared with this variable quantity and draws the current diameter of emery wheel, and calculated the motor speed that current emery wheel needs rotating speed corresponding; Controller controls frequency converter and performs speed governing.
As preferred version of the present invention, described controller receives the dresser displacement △ l that displacement sensing sends, and compares with the laststate lower grinding wheel diameter d be kept in controller, draws current grinding wheel diameter d
1, draw current emery wheel object rotating speed n=19108.28*V/d further.
Emery wheel under certain rotating speed, linear velocity
V＝3.14*d*n/(60*1000) m/s
Wherein d mm
n rpm
Target is that V is constant, when d changes (diminishing)
N=19108.28*V/d increases
D=D+ △ l D is the diameter of emery wheel after finishing, and l is trimmer displacement.Rotating speed n by frequency converter timing by motor, is exported the signal of telecommunication when trimmer displacement by the position sensor be installed in together, is changed, input converter fm voltage, Frequency Converter Control electrical motor gearshift by controller.Realize fixed speed control.
Described control receives a displacement transducer detection signal in every 10 seconds.
When described emery wheel variable quantity is less than 0.02-0.05mm, controller does not process, and continues the grinding wheel diameter d preserving the upper time
1; When the feedback of controller received bit shift controller, obtain current diameter d
2, and accumulative diameter change and d
1-d
2when being greater than 2mm, frequency converter is transmitted control signal, with Time Controller current grinding wheel diameter preserved and covered the grinding wheel diameter of a upper time.
Structure of the present invention is simple, described turn-screw comprises the adjusting portion being positioned at grinding machine inside and the measurement section being positioned at grinding machine outside, measurement section connects adjusting portion by a connecting axle one end, and the other end is connected with an adjusting knob, and described adjusting knob is provided with angular transducer.More cheap by cost, the angular transducer that precision is high changes into angle signal, and this angle signal calculates the displacement data of leading screw via controller, and then obtains the change of grinding wheel diameter.The present invention adopts angular transducer to carry out alternative grating displacement sensor, and be due to first, the grinding machine that the present invention be directed to price lower improves, and can obtain good production effect when lower cost.Secondly, due to the mechanism design reason of grinding machine own, the displacement transducer of grating class can not break even and well be installed on its inside, and its price is 10-20 times of angular transducer.Meanwhile, do not need to do too much structural modification to original grinding machine equipment.
Accompanying drawing explanation
Fig. 1 is a kind of grinder wheel control by permanent velocity of the present invention system architecture schematic block diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is elaborated.
As shown in Figure 1, a kind of grinder wheel control by permanent velocity of the present invention system, comprise emery wheel and dresser, also comprise the displacement transducer detecting dresser displacement, and a controller, the frequency converter be connected with the electric rotating machine driving emery wheel to rotate, described controller is electrically connected with displacement transducer and frequency converter respectively, and controller accepts the detection data of displacement transducer and transmits control signal to frequency converter, the main shaft of described emery wheel is connected by the output shaft of belt with described electric rotating machine.
Described displacement transducer comprises a prototype gear, and installs and the angular transducer on described prototype gear; Described prototype gear is connected with the turn-screw screw of trimmer.This programme, installs simple, with low cost.Avoid the significantly transformation to equipment, originally can complete with less one-tenth.Its Be very effective.
Dresser is regulated by turn-screw, and described turn-screw comprises the adjusting portion being positioned at grinding machine inside and the measurement section being positioned at grinding machine outside, and measurement section comprises connecting axle, adjusting knob and an angular transducer; Connect adjusting portion by described connecting axle one end, the other end is connected with an adjusting knob.
The length of described measurement section is not less than 50mm.
Another object of the present invention is to provide a kind of control method as above-mentioned grinder wheel control by permanent velocity system, specifically comprise the following steps: controller receives the displacement of dresser, the i.e. variable quantity of grinding wheel diameter, the grinding wheel diameter of a upper time was compared with this variable quantity and draws the current diameter of emery wheel, and calculated the motor speed that current emery wheel needs rotating speed corresponding; Controller controls frequency converter and performs speed governing., described controller receives the dresser displacement △ l that displacement sensing sends, and compares with the laststate lower grinding wheel diameter d be kept in controller, draws current grinding wheel diameter d
1, draw current emery wheel object rotating speed n=19108.28*V/d further.
Emery wheel under certain rotating speed, linear velocity
V＝3.14*d*n/(60*1000) m/s
Wherein d mm
n rpm
Target is that V is constant, when d changes (diminishing)
N=19108.28*V/d increases
D=D+ △ l D is the diameter of emery wheel after finishing, and l is trimmer displacement.Rotating speed n by frequency converter timing by motor, is exported the signal of telecommunication when trimmer displacement by the position sensor be installed in together, is changed, input converter fm voltage, Frequency Converter Control electrical motor gearshift by controller.Realize fixed speed control.
Described control receives a displacement transducer detection signal in every 10 seconds.This numerical value according to different production objects, can arrange the different time, such as, for the situation that the smoothness requirements of workpiece is not high, by this time lengthening, otherwise can shorten.
When described emery wheel variable quantity is less than 0.02-0.05mm, controller does not process, and continues the grinding wheel diameter d preserving the upper time
1; When the feedback of controller received bit shift controller, obtain current diameter d
2, and accumulative diameter change and d
1-d
2when being greater than 2mm, frequency converter is transmitted control signal, with Time Controller current grinding wheel diameter preserved and covered the grinding wheel diameter of a upper time.
Structure of the present invention is simple, described turn-screw comprises the adjusting portion being positioned at grinding machine inside and the measurement section being positioned at grinding machine outside, measurement section connects adjusting portion by a connecting axle one end, and the other end is connected with an adjusting knob, and described adjusting knob is provided with angular transducer.More cheap by cost, the angular transducer that precision is high changes into angle signal, and this angle signal calculates the displacement data of leading screw via controller, and then obtains the change of grinding wheel diameter.The present invention adopts angular transducer to carry out alternative grating displacement sensor, and be due to first, the grinding machine that the present invention be directed to price lower improves, and can obtain good production effect when lower cost.Secondly, due to the mechanism design reason of grinding machine own, the displacement transducer of grating class can not break even and well be installed on its inside, and its price is 10-20 times of angular transducer.Meanwhile, do not need to do too much structural modification to original grinding machine equipment.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. a grinder wheel control by permanent velocity system, comprise emery wheel and dresser, it is characterized in that, also comprise the displacement transducer detecting dresser displacement, and a controller, the frequency converter be connected with the electric rotating machine driving emery wheel to rotate, described controller is electrically connected with displacement transducer and frequency converter respectively, and controller accepts the detection data of displacement transducer and transmits control signal to frequency converter, the main shaft of described emery wheel is connected by the output shaft of belt with described electric rotating machine.
2. a kind of grinder wheel control by permanent velocity system according to claim 1, it is characterized in that, described displacement transducer comprises a prototype gear, and installs and the angular transducer on described prototype gear; Described prototype gear is connected with the turn-screw screw of trimmer.
3. a kind of grinder wheel control by permanent velocity system according to claim 1, it is characterized in that, dresser is regulated by turn-screw, described turn-screw comprises the adjusting portion being positioned at grinding machine inside and the measurement section being positioned at grinding machine outside, and measurement section comprises connecting axle, adjusting knob and an angular transducer; Connect adjusting portion by described connecting axle one end, the other end is connected with an adjusting knob.
4. a kind of grinder wheel control by permanent velocity system according to claim 1, it is characterized in that, the length of described measurement section is not less than 50mm.
5. the control method of a grinder wheel control by permanent velocity system as claimed in claim 1, it is characterized in that, comprise the following steps: controller receives the displacement of dresser, the i.e. variable quantity of grinding wheel diameter, the grinding wheel diameter of a upper time was compared with this variable quantity and draws the current diameter of emery wheel, and calculated the motor speed that current emery wheel needs rotating speed corresponding; Controller controls frequency converter and performs speed governing.
6. the control method of grinder wheel control by permanent velocity system according to claim 5, it is characterized in that, controller receives the dresser displacement △ l that displacement sensing sends, and compares with the laststate lower grinding wheel diameter d be kept in controller, draws current grinding wheel diameter d
1, draw current emery wheel object rotating speed n=19108.28*V/d further.
7. the control method of grinder wheel control by permanent velocity system according to claim 5, is characterized in that, described control receives a displacement transducer detection signal in every 10 seconds.
8. the control method of grinder wheel control by permanent velocity system according to claim 5, is characterized in that, when described emery wheel variable quantity is less than 0.02-0.05mm, controller does not process, and continues the grinding wheel diameter d preserving the upper time
1; When the feedback of controller received bit shift controller, obtain current diameter d
2, and accumulative diameter change and d
1-d
2when being greater than 2mm, frequency converter is transmitted control signal, with Time Controller current grinding wheel diameter preserved and covered the grinding wheel diameter of a upper time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510262118.6A CN104889888B (en) | 2015-05-21 | 2015-05-21 | A kind of grinder wheel control by permanent velocity system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510262118.6A CN104889888B (en) | 2015-05-21 | 2015-05-21 | A kind of grinder wheel control by permanent velocity system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104889888A true CN104889888A (en) | 2015-09-09 |
| CN104889888B CN104889888B (en) | 2017-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510262118.6A Expired - Fee Related CN104889888B (en) | 2015-05-21 | 2015-05-21 | A kind of grinder wheel control by permanent velocity system and control method |
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| Country | Link |
|---|---|
| CN (1) | CN104889888B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945729A (en) * | 2016-04-27 | 2016-09-21 | 广东工业大学 | Metal rotating member constant-pressure grinding control device and method |
| CN107234547A (en) * | 2016-03-28 | 2017-10-10 | 沈阳海默数控机床有限公司 | A kind of grinding processing method and its device |
| CN107803748A (en) * | 2016-10-18 | 2018-03-16 | 江南大学 | A kind of more deformation casting reconditioning horizontal feed control methods |
| CN108942538A (en) * | 2018-09-17 | 2018-12-07 | 苏州市海研电子科技有限公司 | A kind of constant linear velocity grinder for polishing |
| CN112264842A (en) * | 2020-10-28 | 2021-01-26 | 福州大学 | Constant linear velocity grinding method based on polar coordinate glass edge grinding machine |
| CN115284104A (en) * | 2022-10-08 | 2022-11-04 | 广州太威机械有限公司 | Gravity type deburring device floating in horizontal direction |
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| US4019288A (en) * | 1974-05-10 | 1977-04-26 | Seiko Seiki Kabushiki Kaisha | Grinding method and apparatus |
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| CN1962196A (en) * | 2005-11-11 | 2007-05-16 | 上海日发数字化系统有限公司 | Method for controlling constant linear speed grinding of grinding machine |
| CN203901108U (en) * | 2014-05-28 | 2014-10-29 | 成都飞机工业（集团）有限责任公司 | Automatic control device for constant-linear-speed operation of grinding wheel of plain grinding machine |
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Patent Citations (6)
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|---|---|---|---|---|
| US4019288A (en) * | 1974-05-10 | 1977-04-26 | Seiko Seiki Kabushiki Kaisha | Grinding method and apparatus |
| JPS55131468A (en) * | 1979-04-02 | 1980-10-13 | Litton Industries Inc | Grinder |
| CN2190534Y (en) * | 1993-12-22 | 1995-03-01 | 吴加林 | Automatic controller for internal grinder abrasive wheel constant linear speed |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107234547A (en) * | 2016-03-28 | 2017-10-10 | 沈阳海默数控机床有限公司 | A kind of grinding processing method and its device |
| CN107234547B (en) * | 2016-03-28 | 2019-06-18 | 沈阳海默数控机床有限公司 | A kind of grinding processing method and its device |
| CN105945729A (en) * | 2016-04-27 | 2016-09-21 | 广东工业大学 | Metal rotating member constant-pressure grinding control device and method |
| CN105945729B (en) * | 2016-04-27 | 2018-01-23 | 广东工业大学 | A kind of metallic rotary part constant pressure polishing control device and control method |
| CN107803748A (en) * | 2016-10-18 | 2018-03-16 | 江南大学 | A kind of more deformation casting reconditioning horizontal feed control methods |
| CN108942538A (en) * | 2018-09-17 | 2018-12-07 | 苏州市海研电子科技有限公司 | A kind of constant linear velocity grinder for polishing |
| CN112264842A (en) * | 2020-10-28 | 2021-01-26 | 福州大学 | Constant linear velocity grinding method based on polar coordinate glass edge grinding machine |
| CN112264842B (en) * | 2020-10-28 | 2022-03-11 | 福州大学 | Constant linear velocity grinding method based on polar coordinate glass edge grinding machine |
| CN115284104A (en) * | 2022-10-08 | 2022-11-04 | 广州太威机械有限公司 | Gravity type deburring device floating in horizontal direction |
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| CN104889888B (en) | 2017-10-03 |
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| CB03 | Change of inventor or designer information |
Inventor after: Chen Bo Inventor after: Ji Chen Inventor after: Zhang Yi Inventor after: Wang Yajun Inventor after: Li Wenxing Inventor after: Shen Daoming Inventor after: Jia Meng Inventor after: Ge Jinlin Inventor after: Chen Xiaojing Inventor after: Lian Liming Inventor before: Li Wenxing Inventor before: Ge Jinlin Inventor before: Jia Meng Inventor before: Lian Liming Inventor before: Chen Bo Inventor before: Chen Xiaojing |
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Granted publication date: 20171003 Termination date: 20180521 |