CN102172864B - 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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- CN102172864B CN102172864B CN 201110050423 CN201110050423A CN102172864B CN 102172864 B CN102172864 B CN 102172864B CN 201110050423 CN201110050423 CN 201110050423 CN 201110050423 A CN201110050423 A CN 201110050423A CN 102172864 B CN102172864 B CN 102172864B
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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 precise grinding process and the device in a kind of machine tool technology field, specifically 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 at present is: 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 turning hundreds of, the rotation centerline of cup emery wheel grinding tool and the rotation centerline of processed spheroid are in the same level face and intersect vertically, like this, the spherical geometry precision (sphericity) after the grinding of guarantee spheroid; The emery wheel grinding tool drives by servomotor or stepper motor and does feed motion by before backward.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 large, 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 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: digital controlled sperical grinding machine having auto detection mainly is to be provided with automatic detection device at lathe, realizes the workpiece online automatic detection.The emery wheel grinding tool of the Numerical Control Spherical Surface 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: to the large spherical surface grinding time, 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 affected.
Summary of the invention
The object 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 comprised 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 comprised of horizontal grinding parts and vertical grinding parts two parts, be characterized in: horizontal grinding parts Horizontal type is installed in the back of large spherical surface workpiece, and the main shaft rotation centerline of the rotation centerline of the first grinding spindle of horizontal grinding parts and left lathe bed axis system and right lathe bed tailstock system intersects vertically in the same level face.The vertical backstroke of vertical grinding parts be installed in large spherical surface below, the main shaft rotation centerline of the rotation centerline of the second grinding spindle of vertical grinding parts and left lathe bed axis system and right lathe bed tailstock system intersects vertically in same vertical plane.The rotation centerline of the rotation centerline of the first grinding spindle of horizontal grinding parts and the 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 first sphere is carried out grinding, and after grinding a period of time, vertical grinding parts just begin grinding.Because horizontal grinding parts begin first grinding, 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, until the annular sphere band size of the sphere size of rear grinding and grinding has just become whole the contact when equal, the grinding that so hockets arrives dimensional requirement until be ground sphere.Owing to be that clearance-type contacts between the emery wheel piece on the vertical grinding parts emery wheel grinding tool and the workpiece, greatly be conducive to chip removal and cooling in the grinding process, improved grinding efficiency.
The present invention relates to a kind of high hard large spherical surface double abrasive wheel accurate grinding device, comprise: vertical sleeping double abrasive wheel grinding system, left lathe bed axis system, right lathe bed tailstock system and large platform, wherein: vertical sleeping double abrasive wheel grinding system, left lathe bed axis system, right lathe bed tailstock system are fixedly mounted on the large platform, the left end of vertical sleeping double abrasive wheel grinding system is fixedly 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.
Described vertical sleeping double abrasive wheel grinding system is comprised of horizontal grinding parts and vertical grinding parts two parts, wherein: the rear end of vertical grinding parts is fixedly connected with horizontal grinding parts, horizontal grinding parts Horizontal type is installed on the rear side of large spherical surface workpiece, the vertical backstroke of vertical grinding parts be installed in large spherical surface below.
Described horizontal grinding parts, comprise: horizontal grinding lathe bed, the first servomotor, the first synchronous pulley, the first Timing Belt, ball screw bearing block, ball screw bearing, ballscrew nut fitting, the second synchronous pulley, Horizontal grinding main shaft case, electric main shaft, the 3rd synchronous pulley, the second Timing Belt, the 4th synchronous pulley, expansion sleeve, the first grinding spindle, the first cup emery wheel grinding tool, wherein, the first servomotor is by the first synchronous pulley, the first Timing Belt, the second synchronous pulley, and ballscrew nut fitting drives the Horizontal grinding main shaft case and does feed motion; The electricity main shaft rotates by the 3rd synchronous pulley, the second Timing Belt, the 4th synchronous pulley, expansion sleeve, the first grinding spindle, driving the first cup emery wheel grinding tool, realizes the grinding on the large spherical surface horizontal direction.
The main shaft rotation centerline of the rotation centerline of described the first grinding spindle and left lathe bed axis system and right lathe bed tailstock system intersects vertically in the same level face.
Described vertical grinding parts comprise: vertical grinding support, spline housing bearing block, the second spiral bevel gear, the first spiral bevel gear, spline housing, spline housing bearing, shaft coupling, variable-frequency motor, the second grinding spindle sleeve, the second servomotor, gear, tooth bar, the 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 the first spiral bevel gear, by the second spiral bevel gear rotary power is delivered to spline housing again; Spline housing becomes an overall structure with the second spiral bevel gear by bolt-connection, and the cylindrical of spline housing is fixed in the spline housing bearing block by the spline housing bearing; The 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 the first servomotor, gear driving rack, thereby drive the second grinding spindle sleeve and the second grinding spindle moves up and down; The lower end of the second grinding spindle is splined shaft, be sleeved in the spline housing, the second cup emery wheel grinding tool is bolted on the second grinding spindle top, so, variable-frequency motor is delivered to the second grinding spindle and the second cup emery wheel grinding tool to rotary power by the first spiral bevel gear, the second spiral bevel gear, spline housing, realize vertical backstroke from lower to upper to the grinding of large spherical surface.
The main shaft rotation centerline of the rotation centerline of described the second grinding spindle and left lathe bed axis system and right lathe bed tailstock system intersects vertically in same vertical plane.
The rotation centerline of the second grinding spindle of the rotation centerline of described the first grinding spindle and vertical grinding parts intersects vertically in same vertical plane.
The present invention has following characteristics and effect:
Vertical sleeping double abrasive wheel grinding system 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 the small-diameter grinding wheel grinding tool goes out an one fixed 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 large grinding grinding tool and the workpiece, this is conducive to cooling fluid washing away emery wheel piece surface greatly, be conducive to chip removal, be conducive to the cooling to 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 vertical sleeping double abrasive wheel grinding system of the present invention;
The specific embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, 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, vertical sleeping double abrasive wheel grinding system 5, right lathe bed tailstock system spindle 6, right lathe bed tailstock system 7.Its annexation is: left lathe bed axis system 2, vertical sleeping double abrasive wheel grinding system 5, right lathe bed tailstock system 7 are fixedly mounted on the large platform 1.Vertical sleeping double abrasive wheel grinding system 5 left ends 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, described vertical sleeping double abrasive wheel grinding system 5 is comprised 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: horizontal grinding parts Horizontal type is installed in the back of large spherical surface workpiece 4, and the main shaft rotation centerline of the rotation centerline of the first grinding spindle 22 on the horizontal grinding parts and left lathe bed axis system 2 and right lathe bed tailstock system 7 intersects vertically in the same level face.The vertical backstroke of vertical grinding parts be installed in large spherical surface 4 below, the main shaft rotation centerline of the rotation centerline of the second grinding spindle 36 of vertical grinding parts and left lathe bed axis system 2 and right lathe bed tailstock system 7 intersects vertically in same vertical plane.The rotation centerline of the rotation centerline of the first grinding spindle 22 of horizontal grinding parts and the second grinding spindle 36 of vertical grinding parts intersects vertically in same vertical plane.
Described horizontal grinding parts comprise: horizontal grinding lathe bed 8, the first servomotor 9, the first synchronous pulley 10, the first Timing Belt 11, ball screw bearing block 12, ball screw bearing 13, ballscrew nut fitting 14, the second synchronous pulley 15, Horizontal grinding main shaft case 16, electric main shaft 17, the 3rd synchronous pulley 18, the second Timing Belt 19, the 4th synchronous pulley 20, expansion sleeve 21, Horizontal grinding main shaft 22, the first cup emery wheel grinding tool 23.Wherein, the first servomotor 9 is fixedly mounted on the horizontal grinding lathe bed 8, by the first synchronous pulley 10, the first Timing Belt 11, the second synchronous pulley 15, ballscrew nut fitting 14 drives Horizontal grinding main shaft casees 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 main shaft case 16, the 4th synchronous pulley 20 usefulness expansion sleeves 21 are fixed on the afterbody of the first grinding spindle 22, the first cup emery wheel grinding tool 23 is screwed the front end that is installed in the first grinding spindle 22, and electric main shaft 17 drives the first cup emery wheel grinding tool 23 and rotates by the 3rd synchronous pulley 18, the second Timing Belt 19, the 4th synchronous pulley 20.
Described vertical grinding parts comprise: vertical grinding support 24, spline housing bearing block 25, the second spiral bevel gear 26, the 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, the second servomotor 33, gear 34, tooth bar 35, the 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 the first spiral bevel gear 27, by the second spiral bevel gear 26 rotary power is delivered to spline housing 28 again; Spline housing 28 becomes an overall structure with the 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; The 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 the second servomotor 33, gear 34 and move up and down, thereby drive the second grinding spindle sleeve 32 and the second grinding spindle 36 moves up and down; The lower end of the second grinding spindle 36 is splined shaft, is sleeved in the spline housing 28, so variable-frequency motor 31 passes to the second grinding spindle 36 to rotary power by the first spiral bevel gear 27, the second spiral bevel gear 26, spline housing 28; The second cup emery wheel grinding tool 38 is bolted on the 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 (4)
1. one kind high hard large spherical surface double abrasive wheel accurate grinding device, it is characterized in that, comprise: vertical sleeping double abrasive wheel grinding system, left lathe bed axis system, right lathe bed tailstock system and large platform, wherein: vertical sleeping double abrasive wheel grinding system, left lathe bed axis system, right lathe bed tailstock system are fixedly mounted on the large platform, the left end of vertical sleeping double abrasive wheel grinding system is fixedly 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;
Described vertical sleeping double abrasive wheel grinding system is comprised of horizontal grinding parts and vertical grinding parts two parts, wherein: the rear end of vertical grinding parts is fixedly connected with horizontal grinding parts, horizontal grinding parts Horizontal type is installed on the rear side of large spherical surface workpiece, the vertical backstroke of vertical grinding parts be installed in large spherical surface below.
2. the hard large spherical surface double abrasive wheel of height according to claim 1 accurate grinding device, it is characterized in that, described horizontal grinding parts, comprise: horizontal grinding lathe bed, the first servomotor, the first synchronous pulley, the first Timing Belt, the ball screw bearing block, the ball screw bearing, ballscrew nut fitting, the second synchronous pulley, the Horizontal grinding main shaft case, the electricity main shaft, the 3rd synchronous pulley, the second Timing Belt, the 4th synchronous pulley, expansion sleeve, the first grinding spindle, the first cup emery wheel grinding tool, wherein, the first servomotor is by the first synchronous pulley, the first Timing Belt, the second synchronous pulley, ballscrew nut fitting drives the Horizontal grinding main shaft case and does feed motion; The electricity main shaft rotates by the 3rd synchronous pulley, the second Timing Belt, the 4th synchronous pulley, expansion sleeve, the first grinding spindle, driving the first cup emery wheel grinding tool, realizes the grinding on the large spherical surface horizontal direction.
3. the hard large spherical surface double abrasive wheel of height according to claim 2 accurate grinding device, it is characterized in that the main shaft rotation centerline of the rotation centerline of described the first grinding spindle and left lathe bed axis system and right lathe bed tailstock system intersects vertically in the same level face.
4. the hard large spherical surface double abrasive wheel of height according to claim 1 accurate grinding device, it is characterized in that, described vertical grinding parts comprise: vertical grinding support, the spline housing bearing block, the second spiral bevel gear, the first spiral bevel gear, spline housing, the spline housing bearing, shaft coupling, variable-frequency motor, the second grinding spindle sleeve, the second servomotor, gear, tooth bar, the 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 the first spiral bevel gear, by the second spiral bevel gear rotary power is delivered to spline housing again; Spline housing becomes an overall structure with the second spiral bevel gear by bolt-connection, and the cylindrical of spline housing is fixed in the spline housing bearing block by the spline housing bearing; The 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 the second servomotor, gear driving rack, thereby drive the second grinding spindle sleeve and the second grinding spindle moves up and down; The lower end of the second grinding spindle is splined shaft, be sleeved in the spline housing, the second cup emery wheel grinding tool is bolted on the second grinding spindle top, so, variable-frequency motor is delivered to the second grinding spindle and the second cup emery wheel grinding tool to rotary power by the first spiral bevel gear, the second spiral bevel gear, spline housing, realize vertical backstroke from lower to upper to the grinding of large spherical surface.
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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 CN102172864A (en) | 2011-09-07 |
| CN102172864B true CN102172864B (en) | 2013-01-09 |
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| CN 201110050423 Expired - Fee Related 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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| CN102744666B (en) * | 2012-07-03 | 2014-11-19 | 上海交通大学 | Numerical control accurate grinding device and grinding method for seal ring internal spherical surface |
| 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 |
| CN103862380B (en) * | 2014-03-26 | 2016-06-01 | 上海交通大学 | The few axle grinding of optical mirror plane tilts cambered surface grinding wheel error and analyzes and make-up system |
| CN104191329B (en) * | 2014-09-01 | 2017-01-11 | 浙江美德机械有限公司 | Ball grinding mill |
| 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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| DE4208049A1 (en) * | 1992-03-13 | 1993-09-16 | Kugelfischer G Schaefer & Co | Machine for lapping and polishing steel balls - has grooved lapping plates elastically coupled to backing discs so that rotating plate can be radially displaced to vary ball rolling axis |
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| CN200981181Y (en) * | 2006-10-13 | 2007-11-28 | 河南新机股份有限公司 | Horizontal steel ball flashing machine guide pillar and tail stock flange supporting and positioning structure |
| CN201446474U (en) * | 2009-08-21 | 2010-05-05 | 纽威数控装备（苏州）有限公司 | Numerical control ball grinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100472931B1 (en) * | 2002-08-09 | 2005-03-10 | 정동택 | Method for makng ceramic spheres |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069621A (en) * | 1976-06-17 | 1978-01-24 | Intreprinderea "Mecanica" Plopeni | Apparatus for machining bearing rolls |
| DE4208049A1 (en) * | 1992-03-13 | 1993-09-16 | Kugelfischer G Schaefer & Co | Machine for lapping and polishing steel balls - has grooved lapping plates elastically coupled to backing discs so that rotating plate can be radially displaced to vary ball rolling axis |
| CN200981181Y (en) * | 2006-10-13 | 2007-11-28 | 河南新机股份有限公司 | Horizontal steel ball flashing machine guide pillar and tail stock flange supporting and positioning structure |
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| CN201446474U (en) * | 2009-08-21 | 2010-05-05 | 纽威数控装备（苏州）有限公司 | Numerical control ball grinder |
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