CN113857956A - Grinding head structure of double-end-face grinding machine - Google Patents
Grinding head structure of double-end-face grinding machine Download PDFInfo
- Publication number
- CN113857956A CN113857956A CN202111130580.2A CN202111130580A CN113857956A CN 113857956 A CN113857956 A CN 113857956A CN 202111130580 A CN202111130580 A CN 202111130580A CN 113857956 A CN113857956 A CN 113857956A
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- sleeve
- rolling
- grinding head
- spline
- main shaft
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- 238000005096 rolling process Methods 0.000 claims abstract description 65
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
- B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders
-
- 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
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Transmission Devices (AREA)
Abstract
A grinding head structure of a double-end-face grinding machine comprises a grinding head main shaft, wherein the grinding head main shaft is connected with a lead screw feeding component, the lead screw feeding component comprises a guide sleeve, a rolling spline arranged on the upper portion of the guide sleeve, a double-nut ball screw arranged in the middle of the guide sleeve and a linear bearing arranged on the lower portion of the guide sleeve, an unloading belt pulley is arranged on the upper portion of the grinding head main shaft, and the grinding head main shaft is connected with the unloading belt pulley through a tensioning sleeve. The invention changes the sliding pair into the rolling pair, thereby greatly reducing the driving torque. Meanwhile, the guide clearance caused by the guide of the sliding pair is eliminated, and the Z-axis feeding precision of the grinding head is improved. The grinding head main shaft is connected with the unloading belt pulley by the tensioning sleeve, a spline connection form of the main shaft is cancelled, the impact phenomenon caused by the rectangular spline and the spline sleeve in the force transmission process is effectively solved, and the vibration of the grinding head in the grinding process is reduced. Meanwhile, the processing difficulty of the main shaft is reduced, and the cost of the main shaft is reduced.
Description
Technical Field
The invention relates to a double-ended grinding machine, in particular to a grinding head structure of the double-ended grinding machine.
Background
The Z-axis feeding mechanism of the grinding head of the traditional double-ended grinding machine is formed by a ball screw or a ball screw and a front-back sliding guide sleeve, and the starting sliding guide adopts flat key guide; the grinding head main shaft is connected with the unloading belt pulley through a rectangular spline.
The grinding head structure has the following defects:
1. the front and rear sliding guide sleeve structure is adopted, the axial direction of the lead screw is limited by a sliding flat key, and the driving moment required during sliding is large.
2. The sliding pair of the guide structure of the sliding flat key of the guide sleeve is in clearance fit, so that the Z-axis feeding precision of the grinding head is reduced when the screw rod is driven, and particularly the return clearance is very large.
3. The existing main shaft is connected with the unloading belt pulley by using a rectangular spline, the processing requirement on the spline and the spline sleeve on the main shaft is high, and when the fit clearance is small, the problem of clamping stagnation of a spline pair in the up-and-down movement is easily caused; when the fit clearance is too large, the spline pair has an impact phenomenon in the process of force penetration, the grinding head is easy to vibrate, and the surface of a product has vibration grains.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a grinding head structure of a double-ended grinding machine, which improves the feeding precision of a main shaft of the grinding head, reduces the processing difficulty of the main shaft and is not easy to vibrate.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a bi-polar surface grinding machine bistrique structure, includes bistrique main shaft, its characterized in that: the grinding head spindle is connected with a screw feeding component, and the screw feeding component comprises a guide sleeve, a rolling spline arranged on the upper part of the guide sleeve, a double-nut ball screw arranged in the middle of the guide sleeve and a linear bearing arranged on the lower part of the guide sleeve;
the rolling spline comprises a rolling outer spline sleeve, a rolling inner spline sleeve and a spline rolling body arranged between the rolling outer spline sleeve and the rolling inner spline sleeve, an outer spline groove is machined in the rolling outer spline sleeve and is in interference fit with the guide sleeve, an inner spline groove is machined in the rolling inner spline sleeve, and the rolling inner spline sleeve, the rolling outer spline sleeve and the spline rolling body form a moving pair which moves linearly along the axial direction;
the double-nut ball screw main nut, the screw pair nut, the screw nut rolling body and the guide sleeve form a rolling screw spiral pair to drive the guide sleeve to linearly move along the axial direction;
the linear bearing comprises a linear bearing sleeve and a linear bearing rolling body, the linear bearing sleeve is provided with an inner guide groove, and a moving pair which moves linearly is formed by matching the linear bearing rolling body and the guide sleeve;
an unloading belt pulley is mounted at the upper part of the grinding head main shaft, and the grinding head main shaft is connected with the unloading belt pulley through a tensioning sleeve.
Furthermore, the upper end of the grinding head main shaft is provided with a rotary joint.
Further, install first fixed cover, the fixed cover of second and the fixed cover of third on the lead screw feeding part, first fixed cover shown and the fixed cover of third are installed between the fixed cover of second and lead screw feeding part, first fixed cover and rolling spline are connected, the fixed cover of third is installed in linear bearing's outside, and the bottom of the fixed cover of third outwards extends and is used for supporting the fixed cover of second.
Furthermore, a worm and gear part is arranged in an area between the first fixing sleeve and the second fixing sleeve, and a thrust bearing is arranged between the first fixing sleeve and the worm and gear part.
Furthermore, an end cover is arranged at the lower part of the grinding head main shaft, and the bottom of the end cover extends outwards to support a third fixing sleeve.
The front section of the grinding head screw rod adopts a linear bearing, the middle section of the grinding head screw rod adopts a double-nut ball screw rod, and the rear section of the grinding head screw rod adopts a rolling spline structure, so that a sliding pair is changed into a rolling pair, and the driving torque is greatly reduced. Meanwhile, the rolling balls are pre-tightened in the rolling pair, namely the rolling balls and the roller paths form zero gaps, so that guide gaps caused by the guide of the sliding pair are eliminated, and the Z-axis feeding precision of the grinding head is improved.
The grinding head main shaft and the unloading belt pulley are connected by the tensioning sleeve, the structure cancels a spline connection form of the main shaft, effectively solves the impact phenomenon caused by the rectangular spline and the spline sleeve in the force transmission process, and reduces the vibration of the grinding head in the grinding process. Meanwhile, the processing difficulty of the main shaft is reduced, and the cost of the main shaft is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of the structure at I in the embodiment shown in FIG. 1;
fig. 3 is a schematic structural diagram of a screw feeding component in an embodiment of the invention.
In the figure: 1. the grinding head comprises a grinding head spindle, 2, an unloading belt pulley, 3, a screw feeding component, 31, a guide sleeve, 32, a rolling spline, 33, a double-nut ball screw, 34, a linear bearing, 4, a tensioning sleeve, 5, a rotary joint, 6, a first fixing sleeve, 7, a second fixing sleeve, 8, a third fixing sleeve, 9, a worm and gear component, 10, a thrust bearing, 11, an end cover, 321, a rolling outer spline sleeve, 322, a rolling inner spline sleeve, 323, a spline rolling body, 331, a screw main nut, 332, a screw auxiliary nut, 333, a screw nut rolling body, 341, a linear bearing sleeve, 342 and a linear bearing rolling body.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1-3, the present embodiment includes a grinding head spindle 1, the grinding head spindle 1 is connected to a screw feeding component 3, the screw feeding component 3 includes a guide sleeve 31, a rolling spline 32 installed on the upper portion of the guide sleeve 31, a double-nut ball screw 33 installed in the middle of the guide sleeve 31, and a linear bearing 34 installed on the lower portion of the guide sleeve 31, an unloading pulley 2 is installed on the upper portion of the grinding head spindle 1, and the grinding head spindle 1 is connected to the unloading pulley 2 through a tensioning sleeve 4.
In this embodiment, the upper end of the grinding head spindle 1 is provided with a rotary joint 5.
In this embodiment, the screw feeding part 3 is provided with a first fixing sleeve 6, a second fixing sleeve 7 and a third fixing sleeve 8, the first fixing sleeve 6 and the third fixing sleeve 8 are installed between the second fixing sleeve 7 and the screw feeding part 3, the first fixing sleeve 6 is connected with the rolling spline 3-2, the third fixing sleeve 8 is installed outside the linear bearing 3-4, and the bottom of the third fixing sleeve 8 extends outwards to support the second fixing sleeve 7.
In this embodiment, a worm gear part 9 is disposed in an area between the first fixing sleeve 6 and the second fixing sleeve 7, and a thrust bearing 10 is disposed between the first fixing sleeve 6 and the worm gear part 9.
In this embodiment, the lower portion of the grinding head spindle 1 is provided with an end cover 11, and the bottom of the end cover 11 extends outwards to support the third fixing sleeve 8.
The rolling spline 32 includes a rolling outer spline housing 321, a rolling inner spline housing 322, and a spline rolling body 323 mounted between the rolling outer spline housing 321 and the rolling inner spline housing 322.
The rolling outer spline housing 321 is provided with an outer spline groove and is in interference fit with the guide housing 31, the rolling inner spline housing 322 is provided with an inner spline groove, the rolling inner spline housing 322, the rolling outer spline housing 321 and the spline rolling body 323 form a sliding pair which moves linearly along the axial direction, and the circumferential rotation is limited.
The double-nut ball screw 33 includes a screw main nut 331, a screw sub nut 332, and screw nut rolling bodies 333.
The screw main nut 331, the screw sub nut 332, the screw nut rolling bodies 333, and the guide sleeve 31 form a rolling screw pair. And the clearance between the lead screw main nut 331 and the lead screw auxiliary nut 332 is adjusted to realize zero clearance between the lead screw and the lead screw nut. And the worm gear part 9 drives the lead screw main nut 331 and the lead screw auxiliary nut 332 to rotate, thereby driving the guide sleeve 31 to move linearly along the axial direction.
The linear bearing 34 includes a linear bearing sleeve 341 and a linear bearing rolling body 342.
The linear bearing sleeve 341 is provided with an inner guide groove and forms a linear motion sliding pair by matching with the linear bearing rolling body 342 and the guide sleeve 31.
The upper grinding head main shaft 10, a bearing and other parts are arranged in the guide sleeve 31 to form a grinding head assembly. Namely, the grinding head spindle 10 rotates in the guide sleeve 31, and simultaneously, is driven by the lead screw nut to do linear feeding motion up and down along with the guide sleeve 31 under the guide of the linear bearing 34 and the rolling spline 32.
Various modifications and variations of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (6)
1. The utility model provides a bi-polar surface grinding machine bistrique structure, includes bistrique main shaft, its characterized in that: the grinding head spindle is connected with a lead screw feeding component, and the lead screw feeding component comprises a guide sleeve;
the rolling spline is arranged on the upper part of the guide sleeve and comprises a rolling outer spline sleeve, a rolling inner spline sleeve and a spline rolling body arranged between the rolling outer spline sleeve and the rolling inner spline sleeve, an outer spline groove is machined in the rolling outer spline sleeve and is in interference fit with the guide sleeve, an inner spline groove is machined in the rolling inner spline sleeve, and the rolling inner spline sleeve, the rolling outer spline sleeve and the spline rolling body form a moving pair which moves linearly along the axial direction;
the double-nut ball screw is arranged in the middle of the guide sleeve, and a main nut of the double-nut ball screw, a screw pair nut, a screw nut rolling body and the guide sleeve form a rolling screw pair to drive the guide sleeve to linearly move along the axial direction;
the linear bearing is arranged at the lower part of the guide sleeve and comprises a linear bearing sleeve and a linear bearing rolling body, the linear bearing sleeve is processed with an inner guide groove and is matched with the linear bearing rolling body and the guide sleeve to form a linear motion sliding pair;
an unloading belt pulley is mounted at the upper part of the grinding head main shaft, and the grinding head main shaft is connected with the unloading belt pulley through a tensioning sleeve.
2. The structure of a grinding head of a parallel surface grinding machine of claim 1, wherein: and the upper end of the grinding head main shaft is provided with a rotary joint.
3. The structure of a grinding head of a parallel surface grinding machine of claim 1, wherein: the lead screw feeding component is provided with a first fixed sleeve, a second fixed sleeve and a third fixed sleeve, the first fixed sleeve and the third fixed sleeve are arranged between the second fixed sleeve and the lead screw feeding component, the first fixed sleeve is connected with a rolling spline, the third fixed sleeve is arranged outside the linear bearing, and the bottom of the third fixed sleeve extends outwards to be used for supporting the second fixed sleeve.
4. A structure of grinding heads of a parallel surface grinding machine according to claim 3, characterized in that: the area between the first fixed sleeve and the second fixed sleeve is provided with a worm gear part, and a thrust bearing is arranged between the first fixed sleeve and the worm gear part.
5. A structure of grinding heads of a parallel surface grinding machine according to claim 3, characterized in that: an end cover is arranged at the lower part of the grinding head main shaft, and the bottom of the end cover extends outwards to support a third fixing sleeve.
6. The structure of grinding heads of a parallel surface grinding machine of claim 4, wherein: an end cover is arranged at the lower part of the grinding head main shaft, and the bottom of the end cover extends outwards to support a third fixing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111130580.2A CN113857956B (en) | 2021-09-26 | 2021-09-26 | Grinding head structure of double-end-face grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111130580.2A CN113857956B (en) | 2021-09-26 | 2021-09-26 | Grinding head structure of double-end-face grinding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113857956A true CN113857956A (en) | 2021-12-31 |
| CN113857956B CN113857956B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111130580.2A Active CN113857956B (en) | 2021-09-26 | 2021-09-26 | Grinding head structure of double-end-face grinding machine |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3706948A1 (en) * | 1987-03-04 | 1988-09-15 | Volker Zang | DEVICE FOR GRINDING STRAIGHT- AND SPIRAL-SLOTED CUTTING TOOLS |
| JP2004338043A (en) * | 2003-05-15 | 2004-12-02 | Nec Saitama Ltd | Thread fastening device equipped with thread looseness detecting mechanism |
| CN2915364Y (en) * | 2006-06-13 | 2007-06-27 | 石家庄市轴承专用设备厂一分厂 | Paralled surface grinding machine |
| US20100206114A1 (en) * | 2007-10-24 | 2010-08-19 | Katsura Koyagi | Ball screw with ball splines |
| CN201561052U (en) * | 2009-12-10 | 2010-08-25 | 南京工艺装备制造有限公司 | Flange-type rolling spline pair |
| CN103128647A (en) * | 2013-01-22 | 2013-06-05 | 温州市木野数控设备有限公司 | Machine tool for running-in process of ball and valve seat of ball valve |
| CN205630300U (en) * | 2016-04-14 | 2016-10-12 | 湖南汉诺科技有限公司 | Two flat grinder's quill feed unit |
| CN107520747A (en) * | 2017-09-11 | 2017-12-29 | 南宁宇立仪器有限公司 | A kind of constant force floating installation |
| CN109202709A (en) * | 2018-11-21 | 2019-01-15 | 中国科学院光电技术研究所 | A kind of adaptive grinding head for polishing of pressure control constant pressure |
| CN109968155A (en) * | 2019-05-12 | 2019-07-05 | 宇环数控机床股份有限公司 | A kind of loading device for single side accurate grinding grinding machine |
| CN110039443A (en) * | 2019-04-22 | 2019-07-23 | 薛超 | A kind of main shaft proceeding equipment of biplane grinding machine |
| CN110107677A (en) * | 2019-05-07 | 2019-08-09 | 中国科学院国家天文台南京天文光学技术研究所 | The bearing support structure of precise displacement actuator |
| CN216066977U (en) * | 2021-09-26 | 2022-03-18 | 宇环数控机床股份有限公司 | Grinding head structure of double-end-face grinding machine |
-
2021
- 2021-09-26 CN CN202111130580.2A patent/CN113857956B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3706948A1 (en) * | 1987-03-04 | 1988-09-15 | Volker Zang | DEVICE FOR GRINDING STRAIGHT- AND SPIRAL-SLOTED CUTTING TOOLS |
| JP2004338043A (en) * | 2003-05-15 | 2004-12-02 | Nec Saitama Ltd | Thread fastening device equipped with thread looseness detecting mechanism |
| CN2915364Y (en) * | 2006-06-13 | 2007-06-27 | 石家庄市轴承专用设备厂一分厂 | Paralled surface grinding machine |
| US20100206114A1 (en) * | 2007-10-24 | 2010-08-19 | Katsura Koyagi | Ball screw with ball splines |
| CN201561052U (en) * | 2009-12-10 | 2010-08-25 | 南京工艺装备制造有限公司 | Flange-type rolling spline pair |
| CN103128647A (en) * | 2013-01-22 | 2013-06-05 | 温州市木野数控设备有限公司 | Machine tool for running-in process of ball and valve seat of ball valve |
| CN205630300U (en) * | 2016-04-14 | 2016-10-12 | 湖南汉诺科技有限公司 | Two flat grinder's quill feed unit |
| CN107520747A (en) * | 2017-09-11 | 2017-12-29 | 南宁宇立仪器有限公司 | A kind of constant force floating installation |
| CN109202709A (en) * | 2018-11-21 | 2019-01-15 | 中国科学院光电技术研究所 | A kind of adaptive grinding head for polishing of pressure control constant pressure |
| CN110039443A (en) * | 2019-04-22 | 2019-07-23 | 薛超 | A kind of main shaft proceeding equipment of biplane grinding machine |
| CN110107677A (en) * | 2019-05-07 | 2019-08-09 | 中国科学院国家天文台南京天文光学技术研究所 | The bearing support structure of precise displacement actuator |
| CN109968155A (en) * | 2019-05-12 | 2019-07-05 | 宇环数控机床股份有限公司 | A kind of loading device for single side accurate grinding grinding machine |
| CN216066977U (en) * | 2021-09-26 | 2022-03-18 | 宇环数控机床股份有限公司 | Grinding head structure of double-end-face grinding machine |
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| CN113857956B (en) | 2024-05-24 |
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