CN102172864A - Method and equipment for precisely grinding high and hard large spherical-surface double grinding wheels - Google Patents
Method and equipment for precisely grinding high and hard large spherical-surface double grinding wheels Download PDFInfo
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- CN102172864A CN102172864A CN 201110050423 CN201110050423A CN102172864A CN 102172864 A CN102172864 A CN 102172864A CN 201110050423 CN201110050423 CN 201110050423 CN 201110050423 A CN201110050423 A CN 201110050423A CN 102172864 A CN102172864 A CN 102172864A
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Abstract
The invention discloses a method and equipment for precisely grinding high and hard large spherical-surface double grinding wheels, belonging to the technical field of the machine tools. The device comprises a vertical and horizontal grinding system with double grinding wheels, a left lathe body spindle system, a right lathe body tailstock system and a big platform, wherein a horizontal grinding system with double grinding wheels, the left lathe body spindle system and the right lathe body tailstock system are fixedly installed on the big platform; the left end of the vertical and horizontal grinding system with double grinding wheels is fixedly connected with the left lathe body spindle system, and the right end is connected with the right lathe body tailstock system; and the centre line of the spindle of the left lathe body spindle system keeps concentric with the centre line of the spindle of the right lathe body tailstock system. The vertical and horizontal grinding system with double grinding wheels is integrated on the same large spherical-surface precise grinding equipment, which is favourable for washing the surface of a grinding wheel block by a cooling liquid and is favourable for removing chips and cooling the spherical surface, thereby bringing an obvious effect on preventing from grinding and burning, improving grinding efficiency, and improving grinding quality.
Description
Technical field
What the present invention relates to is the precise grinding process and the device in a kind of machine tool technology field, specifically is a kind of high hard large spherical surface double abrasive wheel precise grinding process and equipment.
Background technology
The large-scale high-precision spheroid is the critical component in the medium-and-large-sized fluid of Important Project, the gas control equipments (large-scale ball valve) such as larger hydrocarbon conveying, large-scale water conservancy, petrochemical industry, Coal Chemical Industry.At present, the about 2400mm of sphere diameter of maximum in the large-scale ball valve, the about 20000kg of weight.Because sealing and wearability requirement, large-scale spherical surface roughness and geometric accuracy require all very high, and surperficial cure process has also been carried out on some large-scale spherical surface, so spherome surface must be through using behind accurate grinding processing and the precise finiss.
Accurate grinding processing for the hard large-scale spherical of this height, the method that adopts is at present: large-scale spherical is by the top support of axis system and tailstock system, motor rotates around the axis system center line by deceleration rear drive spheroid, and the spheroid rotating speed is generally at 20-100rpm; Emery wheel grinding tool parts generally are arranged in the back of processed spheroid, the cup emery wheel grinding tool range of speeds goes to thousands of commentaries on classics hundreds of, the rotation centerline of cup emery wheel grinding tool and the rotation centerline of processed spheroid are in the same horizontal plane and intersect vertically, like this, could guarantee spherical geometry precision (sphericity) after the spheroid grinding; The emery wheel grinding tool by servomotor or stepper motor drive by after do feed motion forward.The rolling movement that the rotatablely moving of high speed rotary motion by the emery wheel grinding tool and spheroid synthesized has been realized the accurate grinding processing of sphere.Because large spherical surface grinding area is big, certain grinding allowance by the preceding working procedure reservation is arranged, add the cure process on surface, the grinding efficiency problem has become an important difficult problem of large spherical surface grinding.
Through the literature search of prior art is found, Chinese patent application number is: 200610050360.8, and name is called: detecting the numerical control spheric grinding machine automatically, mainly is to be provided with automatic detection device on lathe, realizes the workpiece online automatic detection.The emery wheel grinding tool of the numerical control spheric grinding machine of this class special use and the diameter of grinding workpiece are one to one, i.e. the workpiece of the corresponding a kind of diameter specifications of a kind of emery wheel grinding tool of diameter, and this is for the high hard large spherical surface workpiece of grinding, and its grinding efficiency is limited.
With regard to present horizontally disposed structure large-scale sphere accurate grinding equipment, in the problem that exists aspect the grinding efficiency be: the time to the large spherical surface grinding, the diameter of cup emery wheel grinding tool must cover whole large spherical surface, that is to say that emery wheel piece and most of sphere on the cup emery wheel grinding tool remain on whole ring-type contact condition, only at spheroid through hole position, the emery wheel piece just separates with sphere, be in whole ring-type period of contact at emery wheel piece and sphere, the grinding product is compressed in emery wheel to be held in the bits pit and can not get rid of, emery wheel piece rust, thus grinding efficiency influenced.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of high hard large spherical surface double abrasive wheel precise grinding process and equipment are provided, this equipment is made up of double abrasive wheel grinding system, left lathe bed axis system, right lathe bed tailstock system, large platform.The double abrasive wheel grinding system is made up of horizontal grinding parts and vertical grinding parts two parts, be characterized in: the horizontal back that is installed in the large spherical surface workpiece of horizontal grinding parts level, the main axis rotation vertical and intersectant centerline of the rotation centerline of first grinding spindle of horizontal grinding parts and left lathe bed axis system and right lathe bed tailstock system is in same horizontal plane.The vertical backstroke of vertical grinding parts be installed in large spherical surface below, the main axis rotation vertical and intersectant centerline of the rotation centerline of second grinding spindle of vertical grinding parts and left lathe bed axis system and right lathe bed tailstock system is in same vertical plane.The rotation centerline of the rotation centerline of first grinding spindle of horizontal grinding parts and second grinding of vertical grinding parts intersects vertically in same vertical plane.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of high hard large spherical surface double abrasive wheel precise grinding process, may further comprise the steps: the cup emery wheel grinding tool diameter on the horizontal grinding parts is less than the cup emery wheel grinding tool diameter of vertical grinding parts, and vertical grinding parts are as the device that finally sphere is carried out accurate grinding.During grinding, horizontal grinding parts begin earlier sphere is carried out grinding, and after grinding a period of time, vertical grinding parts just begin grinding.Because horizontal grinding parts begin grinding earlier, and owing to the cup emery wheel grinding tool diameter of cup emery wheel grinding tool diameter less than vertical grinding parts, so, just form one in the centre of large spherical surface and be lower than the not annular sphere band of grinding spherical.Like this when vertical grinding parts begin grinding, contacting between the emery wheel piece on its cup emery wheel grinding tool and the sphere just become the clearance-type contact, when equating with the annular sphere mark of grinding is very little, the sphere size of back grinding just become whole the contact, the grinding that so hockets is till being ground sphere and arriving dimensional requirement.Because between the emery wheel piece on the vertical grinding parts emery wheel grinding tool and the workpiece is that clearance-type contacts, and helps chip removal and cooling in the grinding process greatly, has improved grinding efficiency.
The present invention relates to a kind of high hard large spherical surface double abrasive wheel accurate grinding device, comprise: upright double abrasive wheel grinding system, left lathe bed axis system, right lathe bed tailstock system and the large platform of crouching, wherein: the upright double abrasive wheel grinding system that crouches, left lathe bed axis system, right lathe bed tailstock system are fixedly mounted on the large platform, the upright left end that crouches the double abrasive wheel grinding system is fixedlyed connected with left lathe bed axis system, right-hand member is connected with right lathe bed tailstock system, and the spindle centerline of left lathe bed axis system keeps concentric with right lathe bed tailstock system spindle center line.
The described upright double abrasive wheel grinding system that crouches is made up of horizontal grinding parts and vertical grinding parts two parts, wherein: fixedly connected with horizontal grinding parts in the rear end of vertical grinding parts, the horizontal rear side that is installed on the large spherical surface workpiece of horizontal grinding parts level, the vertical backstroke of vertical grinding parts be installed in large spherical surface below.
Described horizontal grinding parts, comprise: horizontal grinding lathe bed, first servomotor, first synchronous pulley, first are with synchronously, ball screw bearing block, ball screw bearing, ballscrew nut fitting, second synchronous pulley, horizontal grinding spindle case, electric main shaft, the 3rd synchronous pulley, second are with synchronously, the 4th synchronous pulley, tensioner cover, first grinding spindle, the first cup emery wheel grinding tool, wherein, first servomotor by first synchronous pulley, first be with synchronously, second synchronous pulley, ballscrew nut fitting drives horizontal grinding spindle case and does feed motion; The electricity main shaft be with synchronously, the 4th synchronous pulley, tensioner cover, first grinding spindle, is driven the first cup emery wheel grinding tool and rotate by the 3rd synchronous pulley, second, and realization is to the grinding on the large spherical surface horizontal direction.
The main axis rotation vertical and intersectant centerline of the rotation centerline of described first grinding spindle and left lathe bed axis system and right lathe bed tailstock system is in same horizontal plane.
Described vertical grinding parts comprise: vertical grinding support, spline housing bearing block, second spiral bevel gear, first spiral bevel gear, spline housing, spline housing bearing, shaft coupling, variable-frequency motor, the second grinding spindle sleeve, second servomotor, gear, tooth bar, second grinding spindle, the second grinding spindle bearing, the second cup emery wheel grinding tool, emery wheel piece, wherein, variable-frequency motor is fixedly mounted on the large platform, by shaft coupling rotary power is delivered to first spiral bevel gear, by second spiral bevel gear rotary power is delivered to spline housing again; Spline housing becomes an overall structure with second spiral bevel gear by Bolt Connection, and the cylindrical of spline housing passes through the spline housing bearing fixing in the spline housing bearing block; Second grinding spindle is fixed in the second grinding spindle sleeve by main shaft bearing, fixed one section tooth bar at the sidewall of the second grinding spindle sleeve, move up and down by first servomotor, gear drive tooth bar, thereby drive the second grinding spindle sleeve and second grinding spindle moves up and down; The lower end of second grinding spindle is a splined shaft, be sleeved in the spline housing, the second cup emery wheel grinding tool is by being bolted to the second grinding spindle top, so, variable-frequency motor is delivered to second grinding spindle and the second cup emery wheel grinding tool to rotary power by first spiral bevel gear, second spiral bevel gear, spline housing, realize vertical backstroke from lower to upper to the grinding of large spherical surface.
The main axis rotation vertical and intersectant centerline of the rotation centerline of described second grinding spindle and left lathe bed axis system and right lathe bed tailstock system is in same vertical plane.
The rotation centerline of second grinding spindle of the rotation centerline of described first grinding spindle and vertical grinding parts intersects vertically in same vertical plane.
The present invention has following characteristics and effect:
The upright double abrasive wheel grinding system that crouches is integrated on the same large spherical surface accurate grinding equipment, two kinds of emery wheel grinding tools with different-diameter carry out grinding to sphere, because minor diameter emery wheel grinding tool goes out a certain width annular sphere band in the large spherical surface first grinding in middle part, for having brought up a kind of condition of clearance-type grinding between the emery wheel piece of major diameter emery wheel grinding tool and the workpiece, this helps cooling fluid washing away emery wheel piece surface greatly, help chip removal, help cooling sphere, thereby to avoiding grinding burn, raising grinding efficiency, raising grinding quality to have positive effect.
Description of drawings
Fig. 1 is the high hard large spherical surface double abrasive wheel accurate grinding equipment general illustration of invention;
Fig. 2 is the partial sectional view of the upright double abrasive wheel grinding system for sleeping in of the present invention;
The specific embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: large platform 1, left lathe bed axis system 2, left lathe bed axis system main shaft 3, large spherical surface workpiece 4, the upright double abrasive wheel grinding system 5 that crouches, right lathe bed tailstock system spindle 6, right lathe bed tailstock system 7.Its annexation is: left lathe bed axis system 2, the upright double abrasive wheel grinding system 5 that crouches, right lathe bed tailstock system 7 are fixedly mounted on the large platform 1.Upright double abrasive wheel grinding system 5 left ends that crouch connect with left lathe bed axis system 2 with bolt, and right-hand member usefulness bolt connects with right lathe bed tailstock system 7, and main shaft 3 center lines of left lathe bed axis system 2 must keep concentric with main shaft 6 center lines of right lathe bed tailstock system 7.
As shown in Figure 2, the described upright double abrasive wheel grinding system 5 that crouches is made up of horizontal grinding parts and vertical grinding parts two parts, and vertical grinding support 24 rear ends of vertical grinding parts connect with the horizontal grinding lathe bed 8 of horizontal grinding parts with bolt.It is characterized in that: the horizontal back that is installed in large spherical surface workpiece 4 of horizontal grinding parts level, the main axis rotation vertical and intersectant centerline of the rotation centerline of first grinding spindle 22 on the horizontal grinding parts and left lathe bed axis system 2 and right lathe bed tailstock system 7 is in same horizontal plane.The vertical backstroke of vertical grinding parts be installed in large spherical surface 4 below, the main axis rotation vertical and intersectant centerline of the rotation centerline of second grinding spindle 36 of vertical grinding parts and left lathe bed axis system 2 and right lathe bed tailstock system 7 is in same vertical plane.The rotation centerline of the rotation centerline of first grinding spindle 22 of horizontal grinding parts and second grinding spindle 36 of vertical grinding parts intersects vertically in same vertical plane.
Described horizontal grinding parts comprise: horizontal grinding lathe bed 8, first servomotor 9, first synchronous pulley 10, first are with 11 synchronously, ball screw bearing block 12, ball screw bearing 13, ballscrew nut fitting 14, second synchronous pulley 15, horizontal grinding spindle case 16, electric main shaft 17, the 3rd synchronous pulley 18, second are with the 19, the 4th synchronous pulley 20, tensioner cover 21, horizontal grinding spindle 22, the first cup emery wheel grinding tool 23 synchronously.Wherein, first servomotor 9 is fixedly mounted on the horizontal grinding lathe bed 8, be with 11, second synchronous pulley 15 synchronously by first synchronous pulley 10, first, ballscrew nut fitting 14 drives horizontal grinding spindle case 16 and does feed motion, ballscrew nut fitting 14 by ball screw bearing 13 be rotatably installed in the ball screw bearing block 12, ball screw bearing block 12 is fixedly mounted on the horizontal grinding lathe bed 8; Electricity main shaft 17 is fixedly mounted in the horizontal grinding spindle case 16, the 4th synchronous pulley 20 usefulness tensioners cover 21 is fixed on the afterbody of first grinding spindle 22, the first cup emery wheel grinding tool 23 is screwed the front end that is installed in first grinding spindle 22, and electric main shaft 17 is with the 19, the 4th synchronous pulley 20 to drive the first cup emery wheel grinding tool 23 synchronously by the 3rd synchronous pulley 18, second and is rotated.
Described vertical grinding parts comprise: vertical grinding support 24, spline housing bearing block 25, second spiral bevel gear 26, first spiral bevel gear 27, spline housing 28, spline housing bearing 29, shaft coupling 30, variable-frequency motor 31, the second grinding spindle sleeve 32, second servomotor 33, gear 34, tooth bar 35, second grinding spindle 36, the second grinding spindle bearing 37, the second cup emery wheel grinding tool 38, emery wheel piece 39.Wherein, variable-frequency motor 31 is fixedly mounted on the large platform 1, by shaft coupling 30 rotary power is delivered to first spiral bevel gear 27, by second spiral bevel gear 26 rotary power is delivered to spline housing 28 again; Spline housing 28 becomes an overall structure with second spiral bevel gear 26 by Bolt Connection, and the cylindrical of spline housing 28 is fixed in the spline housing bearing block 25 by spline housing bearing 29; Second grinding spindle 36 is fixed in the second grinding spindle sleeve 32 by 37 rotations of the second grinding spindle bearing, fixed one section tooth bar 35 at the sidewall of the second grinding spindle sleeve 32, drive tooth bars 35 by second servomotor 33, gear 34 and move up and down, thereby drive the second grinding spindle sleeve 32 and second grinding spindle 36 moves up and down; The lower end of second grinding spindle 36 is a splined shaft, is sleeved in the spline housing 28, so variable-frequency motor 31 passes to second grinding spindle 36 to rotary power by first spiral bevel gear 27, second spiral bevel gear 26, spline housing 28; The second cup emery wheel grinding tool 38 is by being bolted to second grinding spindle, 36 tops, and emery wheel piece 39 is fixedly on the shape emery wheel grinding tool 38, realize vertical backstroke from the bottom up to the grinding of sphere.
Claims (7)
1. one kind high hard large spherical surface double abrasive wheel accurate grinding device, it is characterized in that, comprise: upright double abrasive wheel grinding system, left lathe bed axis system, right lathe bed tailstock system and the large platform of crouching, wherein: the upright double abrasive wheel grinding system that crouches, left lathe bed axis system, right lathe bed tailstock system are fixedly mounted on the large platform, the upright left end that crouches the double abrasive wheel grinding system is fixedlyed connected with left lathe bed axis system, right-hand member is connected with right lathe bed tailstock system, and the spindle centerline of left lathe bed axis system keeps concentric with right lathe bed tailstock system spindle center line.
2. the hard large spherical surface double abrasive wheel of height according to claim 1 accurate grinding device, it is characterized in that, the described upright double abrasive wheel grinding system that crouches is made up of horizontal grinding parts and vertical grinding parts two parts, wherein: fixedly connected with horizontal grinding parts in the rear end of vertical grinding parts, the horizontal rear side that is installed on the large spherical surface workpiece of horizontal grinding parts level, the vertical backstroke of vertical grinding parts be installed in large spherical surface below.
3. the hard large spherical surface double abrasive wheel of height according to claim 2 accurate grinding device, it is characterized in that, described horizontal grinding parts, comprise: horizontal grinding lathe bed, first servomotor, first synchronous pulley, first is with synchronously, the ball screw bearing block, the ball screw bearing, ballscrew nut fitting, second synchronous pulley, horizontal grinding spindle case, the electricity main shaft, the 3rd synchronous pulley, second is with synchronously, the 4th synchronous pulley, the tensioner cover, first grinding spindle, the first cup emery wheel grinding tool, wherein, first servomotor is by first synchronous pulley, first is with synchronously, second synchronous pulley, ballscrew nut fitting drive horizontal grinding spindle case and do feed motion; The electricity main shaft be with synchronously, the 4th synchronous pulley, tensioner cover, first grinding spindle, is driven the first cup emery wheel grinding tool and rotate by the 3rd synchronous pulley, second, and realization is to the grinding on the large spherical surface horizontal direction.
4. the hard large spherical surface double abrasive wheel of height according to claim 3 accurate grinding device, it is characterized in that the main axis rotation vertical and intersectant centerline of the rotation centerline of described first grinding spindle and left lathe bed axis system and right lathe bed tailstock system is in same horizontal plane.
5. the hard large spherical surface double abrasive wheel of height according to claim 2 accurate grinding device, it is characterized in that, described vertical grinding parts comprise: vertical grinding support, the spline housing bearing block, second spiral bevel gear, first spiral bevel gear, spline housing, the spline housing bearing, shaft coupling, variable-frequency motor, the second grinding spindle sleeve, second servomotor, gear, tooth bar, second grinding spindle, the second grinding spindle bearing, the second cup emery wheel grinding tool, the emery wheel piece, wherein, variable-frequency motor is fixedly mounted on the large platform, by shaft coupling rotary power is delivered to first spiral bevel gear, by second spiral bevel gear rotary power is delivered to spline housing again; Spline housing becomes an overall structure with second spiral bevel gear by Bolt Connection, and the cylindrical of spline housing passes through the spline housing bearing fixing in the spline housing bearing block; Second grinding spindle is fixed in the second grinding spindle sleeve by main shaft bearing, fixed one section tooth bar at the sidewall of the second grinding spindle sleeve, move up and down by first servomotor, gear drive tooth bar, thereby drive the second grinding spindle sleeve and second grinding spindle moves up and down; The lower end of second grinding spindle is a splined shaft, be sleeved in the spline housing, the second cup emery wheel grinding tool is by being bolted to the second grinding spindle top, so, variable-frequency motor is delivered to second grinding spindle and the second cup emery wheel grinding tool to rotary power by first spiral bevel gear, second spiral bevel gear, spline housing, realize vertical backstroke from lower to upper to the grinding of large spherical surface.
6. the hard large spherical surface double abrasive wheel of height according to claim 5 accurate grinding device, it is characterized in that the main axis rotation vertical and intersectant centerline of the rotation centerline of described second grinding spindle and left lathe bed axis system and right lathe bed tailstock system is in same vertical plane.
7. according to claim 4 or the hard large spherical surface double abrasive wheel of 6 described height accurate grinding device, it is characterized in that the rotation centerline of second grinding spindle of the rotation centerline of described first grinding spindle and vertical grinding parts intersects vertically in same vertical plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110050423 CN102172864B (en) | 2011-03-02 | 2011-03-02 | Method and equipment for precisely grinding high and hard large spherical-surface double grinding wheels |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110050423 CN102172864B (en) | 2011-03-02 | 2011-03-02 | Method and equipment for precisely grinding high and hard large spherical-surface double grinding wheels |
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| CN102172864A true CN102172864A (en) | 2011-09-07 |
| CN102172864B CN102172864B (en) | 2013-01-09 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744666A (en) * | 2012-07-03 | 2012-10-24 | 上海交通大学 | Numerical control accurate grinding device and grinding method for seal ring internal spherical surface |
| CN103213047A (en) * | 2013-04-18 | 2013-07-24 | 上海交通大学 | Integrated precision grinding system and method for extra-large spherical surface |
| CN103862380A (en) * | 2014-03-26 | 2014-06-18 | 上海交通大学 | Analyzing and compensating system for optical mirror face few-axle grinding inclining cambered face grinding wheel errors |
| CN104191329B (en) * | 2014-09-01 | 2017-01-11 | 浙江美德机械有限公司 | Ball grinding mill |
| CN112659268A (en) * | 2020-12-07 | 2021-04-16 | 滁州学院 | Champignon wood ball cutting equipment |
| CN114714218A (en) * | 2022-05-12 | 2022-07-08 | 龙口市亨嘉智能装备有限公司 | Coaxial double-control synchronous grinding device |
| CN114888665A (en) * | 2022-05-13 | 2022-08-12 | 深圳市威纳盛五金工艺品有限公司 | Adjustable metal handicraft spherical part grinding device |
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| CN103213047B (en) * | 2013-04-18 | 2015-07-01 | 上海交通大学 | Integrated precision grinding system and method for extra-large spherical surface |
| CN103862380A (en) * | 2014-03-26 | 2014-06-18 | 上海交通大学 | Analyzing and compensating system for optical mirror face few-axle grinding inclining cambered face grinding wheel errors |
| CN104191329B (en) * | 2014-09-01 | 2017-01-11 | 浙江美德机械有限公司 | Ball grinding mill |
| CN112659268A (en) * | 2020-12-07 | 2021-04-16 | 滁州学院 | Champignon wood ball cutting equipment |
| CN112659268B (en) * | 2020-12-07 | 2022-02-01 | 滁州学院 | Champignon wood ball cutting equipment |
| CN114714218A (en) * | 2022-05-12 | 2022-07-08 | 龙口市亨嘉智能装备有限公司 | Coaxial double-control synchronous grinding device |
| CN114888665A (en) * | 2022-05-13 | 2022-08-12 | 深圳市威纳盛五金工艺品有限公司 | Adjustable metal handicraft spherical part grinding device |
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| CN102172864B (en) | 2013-01-09 |
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Granted publication date: 20130109 Termination date: 20160302 |