CN216265362U - Digital floating grinding and polishing main shaft - Google Patents
Digital floating grinding and polishing main shaft Download PDFInfo
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- CN216265362U CN216265362U CN202122329096.4U CN202122329096U CN216265362U CN 216265362 U CN216265362 U CN 216265362U CN 202122329096 U CN202122329096 U CN 202122329096U CN 216265362 U CN216265362 U CN 216265362U
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- 238000005498 polishing Methods 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 95
- 230000033001 locomotion Effects 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of grinding and polishing equipment, and relates to a digital floating grinding and polishing main shaft which comprises a transmission shaft, wherein a transmission wheel is arranged at the upper part of the transmission shaft, and the transmission wheel and the transmission shaft synchronously rotate; the floating shaft sleeve is further sleeved on the transmission shaft, the two axial ends of the floating shaft sleeve are supported on the transmission shaft through transmission shaft bearings respectively, a floating connecting plate is arranged at the upper axial end of the floating shaft sleeve in a matched mode, the floating connecting plate is fixedly connected with the floating shaft sleeve, the lower axial end of the floating shaft sleeve is fixedly connected with a lower end cover of the floating shaft sleeve, the lower transmission shaft bearing end of the lower portion is supported through the lower end cover of the floating shaft sleeve, and the upper end of the lower transmission shaft bearing is limited through a lower step of an inner hole of the floating shaft sleeve. The grinding and polishing main shaft can float axially when in work and has better flexible adaptability to workpieces.
Description
Technical Field
The utility model belongs to the technical field of grinding and polishing equipment, and relates to a digital floating grinding and polishing main shaft.
Background
The grinding and polishing processing is a common processing method in the prior art, a main shaft is adopted to drive a grinding and polishing disc to rotate, so that grinding and polishing of a workpiece are realized, the main shaft can only rotate, namely, the main shaft can only be in rigid contact with the workpiece for grinding and polishing, and different contact forces are often required to be set to realize different polishing effects according to different workpiece material properties and workpiece surface technical requirements. The grinding and polishing contact force is controlled by combining the external force sensor and the grinding and polishing main shaft, so that the integral structure and the control algorithm are complex, the size is large, and the large grinding and polishing contact force is easily generated in the moment in the face of a curved surface with large curvature change, and a workpiece is damaged.
Disclosure of Invention
Aiming at the problems, the utility model provides a digital floating grinding and polishing main shaft which can float axially when in work and has better flexible adaptability to workpieces.
According to the technical scheme of the utility model: the utility model provides a main shaft is thrown to digital unsteady mill which characterized in that: the transmission mechanism comprises a transmission shaft, wherein a transmission wheel is arranged at the upper part of the transmission shaft and synchronously rotates with the transmission shaft;
the transmission shaft is also sleeved with a floating shaft sleeve, the two axial ends of the floating shaft sleeve are respectively supported outside the transmission shaft through transmission shaft bearings, the upper axial end of the floating shaft sleeve is provided with a floating connecting plate in a matching way, the floating connecting plate is fixedly connected with the floating shaft sleeve, the lower axial end of the floating shaft sleeve is fixedly connected with a lower end cover of the floating shaft sleeve, the lower end of the transmission shaft bearing at the lower part is supported through the lower end cover of the floating shaft sleeve, and the upper end of the transmission shaft bearing at the lower part is limited through a lower step of an inner hole of the floating shaft sleeve;
the floating shaft sleeve is sleeved with a fixed shaft sleeve, a linear motion actuator is mounted on the outer surface of the fixed shaft sleeve, the piston rod end of the linear motion actuator is fixedly connected with a floating connecting plate, the floating connecting plate can reciprocate along a transmission shaft under the action of the linear motion actuator, and a limiting bolt is fixed on the surface of the floating shaft sleeve and extends into a waist-shaped groove of the fixed shaft sleeve;
the lower end of the transmission shaft is fixedly provided with a bonding disc positioning column, the bottom surface of the bonding disc positioning column is fixedly connected with a bonding disc, and the bottom surface of the bonding disc is fixedly connected with a grinding and polishing disc.
As a further improvement of the utility model, the upper part of the transmission shaft is provided with a sliding sleeve, the sliding sleeve is fixedly provided with a transmission wheel, the upper part of the transmission shaft and the lower part of the sliding sleeve are coaxially matched with each other to form a sliding sleeve bearing installation seat, and the sliding sleeve bearing installation seat are rotatably supported through an upper sliding sleeve bearing and a lower sliding sleeve bearing.
As a further improvement of the utility model, the two axial ends of the inner hole of the sliding sleeve bearing mounting seat are respectively provided with a positioning step, wherein the upper end of the sliding sleeve bearing at the upper part is positioned by a shaft shoulder of the sliding sleeve, and the lower end is positioned by the step at the upper part of the inner hole of the sliding sleeve bearing mounting seat;
the upper end of the sliding sleeve bearing at the lower part is positioned by the lower step of the inner hole of the sliding sleeve bearing mounting seat, and the lower end is positioned by a check ring for a shaft arranged in a lower clamping groove on the circumferential surface of the sliding sleeve;
the sliding sleeve is connected with the transmission shaft through a flat key in a matching way, and the transmission wheel is fixedly connected with a boss of the sliding sleeve through a bolt.
As a further improvement of the utility model, a spacing ring is arranged above a transmission shaft bearing at the upper end of the floating shaft sleeve, and the spacing ring is limited on a transmission shaft through a locking nut;
the lower end of an inner hole, matched with the transmission shaft, of the floating connecting plate is provided with a radial extending portion and an axial extending portion, the distance between the radial extending portion and the locking nut is the axial movement stroke of the floating shaft sleeve, and the axial extending portion is arranged in the inner hole of the floating shaft sleeve in a matched mode.
As a further improvement of the utility model, the lower end of the linear motion actuator is fixedly connected with the fixed shaft sleeve through an actuator mounting column;
the inner sides of the two axial ends of the fixed shaft sleeve are respectively provided with a guide sleeve, and the guide sleeves are limited by guide sleeve limiting plates respectively arranged at the two ends of the fixed shaft sleeve.
As a further improvement of the utility model, a sealing ring is arranged between the bonding disc positioning column and the transmission shaft.
As a further improvement of the utility model, the positioning hole of the positioning column of the bonding disc is fixedly connected with the transmission shaft through a positioning bolt;
the step of the bonding disc positioning column is provided with a bonding disc fixing nut in a matching mode, and the inner thread of the bonding disc fixing nut is connected with the outer thread of the bonding disc in a matching mode.
The utility model has the technical effects that: the product of the utility model has reasonable and ingenious structure, and is purposefully improved aiming at the problem that the main shaft in the prior art can only do rotary motion and can not provide different contact forces when polishing a workpiece; the up-and-down floating of the transmission shaft can be realized by arranging the linear motion actuator, and the rotation and floating double-freedom-degree motion is realized; the linear motion actuator can realize linear motion, can provide instruction force according to requirements, further control grinding and polishing contact force, and can realize gravity compensation by setting the gravity of the floating main shaft part.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a perspective view of the present invention.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In fig. 1 to 4, the device comprises a transmission wheel 1, a sliding sleeve 2, a transmission shaft 3, a sliding sleeve bearing 4, a floating connecting plate 5, a linear motion actuator 6, an actuator mounting column 7, a bonding disc fixing nut 8, a bonding disc 9, a grinding and polishing disc 10, a bonding disc positioning column 11, a sealing ring 12, a floating shaft sleeve sealing element 13, a transmission shaft bearing 14, a floating shaft sleeve 15, a fixing shaft sleeve 16, a guide sleeve 17, a shaft retainer ring 18, a limit bolt 19, a guide sleeve limiting plate 20, a flat key 21, a sliding sleeve bearing mounting seat 22, a lock nut 23, a spacing ring 24, a floating shaft sleeve lower end cover 25 and the like.
As shown in fig. 1 to 4, the utility model relates to a digital floating grinding and polishing spindle, which comprises a transmission shaft 3, wherein a transmission wheel 1 is arranged on the upper part of the transmission shaft 3, and the transmission wheel 1 and the transmission shaft 3 synchronously rotate.
Still overlap on the transmission shaft 3 and establish unsteady axle sleeve 15, the axial both ends of unsteady axle sleeve 15 are supported outside transmission shaft 3 through propeller shaft bearing 14 respectively, and the cooperation of the axial upper end of unsteady axle sleeve 15 sets up unsteady connecting plate 5, and unsteady connecting plate 5 and unsteady axle sleeve 15 fastening connection can be through fastening bolt with unsteady connecting plate 5 and unsteady axle sleeve 15 fastening connection in concrete practice. It will be appreciated that in order to ensure that the drive shaft 3 is able to rotate reliably and to achieve free floating, there is clearance between the outer diameter of the drive shaft 3 and the floating bushing 15.
The lower axial end of the floating shaft sleeve 15 is fixedly connected with a lower end cover 25 of the floating shaft sleeve, the lower end of the transmission shaft bearing at the lower part is supported by the lower end cover 25 of the floating shaft sleeve, and the upper end of the transmission shaft bearing at the lower part is limited by a lower step of an inner hole of the floating shaft sleeve 15.
The floating shaft sleeve 15 is sleeved with a fixed shaft sleeve 16, the outer surface of the fixed shaft sleeve 16 is provided with a linear motion actuator 6, the piston rod end of the linear motion actuator 6 is fixedly connected with the floating connecting plate 5, the floating connecting plate 5 can move back and forth along the transmission shaft 3 under the action of the linear motion actuator 6, the surface of the floating shaft sleeve 15 is fixed with a limit bolt 19, the limit bolt 19 extends into a waist-shaped groove of the fixed shaft sleeve 16, namely, the bolt head of the limit bolt 19 is positioned in the waist-shaped groove of the fixed shaft sleeve 16, and the limit floating shaft sleeve 15 can float up and down for a stroke.
The lower end of the transmission shaft 3 is fixedly provided with a bonding disc positioning column 11, the bottom surface of the bonding disc positioning column 11 is fixedly connected with a bonding disc 9, and the bottom surface of the bonding disc 9 is fixedly connected with a grinding and polishing disc 10. In order to realize reliable positioning and installation of the bonding disc 9, a positioning boss is arranged on the top surface of the bonding disc 9, and the bonding disc 9 is matched and connected with a positioning hole in the bottom surface of the bonding disc positioning column 11 through the positioning boss.
The upper part of the transmission shaft 3 is provided with a sliding sleeve 2, the sliding sleeve 2 is fixedly provided with a transmission wheel 1, and the transmission wheel 1 can be fixedly connected with the sliding sleeve 2 through a set screw.
The upper portion of transmission shaft 3 sets up sliding sleeve bearing mount pad 22 with the coaxial cooperation of the lower part of sliding sleeve 2, rotates through two upper and lower sliding sleeve bearings 4 between sliding sleeve 2 and the sliding sleeve bearing mount pad 22 and supports.
The axial both ends of the hole of sliding sleeve bearing mount pad 22 set up the location step respectively, and wherein the sliding sleeve bearing upper end on upper portion is fixed a position through the shaft shoulder of sliding sleeve 2, and the lower extreme passes through the hole upper portion step location of sliding sleeve bearing mount pad 22.
The upper end of the sliding sleeve bearing at the lower part is positioned by the lower step of the inner hole of the sliding sleeve bearing mounting seat 22, and the lower end is positioned by the shaft retainer ring 18 arranged in the lower clamping groove on the circumferential surface of the sliding sleeve 2.
The sliding sleeve 2 is matched and connected with the transmission shaft 3 through a flat key 21 so as to transmit rotary motion; the driving wheel 1 is fixedly connected with a boss of the sliding sleeve 2 through a bolt.
The spacer ring 24 is arranged above the transmission shaft bearing at the upper end of the floating shaft sleeve 15, namely, the spacer ring 24 is sleeved outside the transmission shaft 3 and is positioned above the transmission shaft bearing 14 at the upper end of the transmission shaft 3, the transmission shaft 3 is provided with threads, the locking nut 23 is installed on the transmission shaft 3, and the spacer ring 24 is limited on the transmission shaft 3 through the locking nut 23.
The lower end of an inner hole of the floating connecting plate 5 matched with the transmission shaft 3 is provided with a radial extension part and an axial extension part, the distance between the radial extension part and the locking nut 23 is the axial movement stroke of the floating shaft sleeve 15, and the axial extension part is arranged in the inner hole of the floating shaft sleeve 15 in a matched mode. When the polishing machine works, the linear motion actuator 6 drives the floating connecting plate 5 to move upwards, and the floating connecting plate 5 drives the transmission shaft 3 to synchronously move upwards after contacting the locking nut 23 upwards, so that the floating adjustment of the polishing disc 10 is realized.
The lower end of the linear motion actuator 6 is fixedly connected with a fixed shaft sleeve 16 through an actuator mounting column 7;
the inner sides of the two axial ends of the fixed shaft sleeve 16 are respectively provided with a guide sleeve 17, and the guide sleeves 17 are limited by guide sleeve limiting plates 20 respectively arranged at the two ends of the fixed shaft sleeve 16.
In order to realize reliable sealing between the bonding disc positioning column 11 and the transmission shaft 3, a sealing ring 12 is arranged between the bonding disc positioning column 11 and the transmission shaft 3, specifically, an annular groove is arranged on the surface of the connecting part of the transmission shaft 3, and the sealing ring 12 is arranged in the annular groove in a matching manner.
The positioning hole of the bonding disc positioning column 11 is fixedly connected with the transmission shaft 3 through a positioning bolt; and a bonding disc fixing nut 8 is arranged on the step of the bonding disc positioning column 11 in a matching manner, and the internal thread of the bonding disc fixing nut 8 is connected with the external thread of the bonding disc 9 in a matching manner. In specific practice, in order to facilitate axial positioning of the bonding disc positioning column 11 during installation, a shaft shoulder is arranged at the lower end of the transmission shaft 3, the bonding disc positioning column 11 is sleeved on the transmission shaft 3 and then axially positioned through the shaft shoulder at the lower end of the transmission shaft 3, the bonding disc positioning column 11 is rotated, and after the positioning hole of the bonding disc positioning column 11 is aligned with the connecting hole at the lower end of the transmission shaft 3, the bonding disc positioning column is fixedly connected through a positioning bolt.
According to the utility model, external rotary motion is transmitted to the transmission shaft 3 through the transmission wheel 1 and then transmitted to the grinding and polishing disk 10, so that the rotation of the grinding and polishing disk 10 is realized; meanwhile, the linear motion actuator 6 drives the floating shaft sleeve 15 to float up and down, so as to drive the transmission shaft 3 and the grinding and polishing disk 10 to float up and down, and thus, the rotary and floating two-degree-of-freedom motion is realized.
The linear motion actuator 6 can realize linear motion, can provide instruction force according to requirements, further control grinding and polishing contact force, and can realize gravity compensation by setting the gravity of the transmission shaft 3.
The rotating speed of the driving wheel 1 and the working condition of the linear motion actuator 6 can be digitally adjusted by an external controller according to the rotating speed of the driving wheel 1 and the output force of the linear motion actuator 6.
Claims (7)
1. The utility model provides a main shaft is thrown to digital unsteady mill which characterized in that: the transmission device comprises a transmission shaft (3), wherein a transmission wheel (1) is arranged at the upper part of the transmission shaft (3), and the transmission wheel (1) and the transmission shaft (3) synchronously rotate;
the transmission shaft (3) is further sleeved with a floating shaft sleeve (15), two axial ends of the floating shaft sleeve (15) are supported outside the transmission shaft (3) through transmission shaft bearings (14), the upper axial end of the floating shaft sleeve (15) is provided with a floating connecting plate (5) in a matching mode, the floating connecting plate (5) is fixedly connected with the floating shaft sleeve (15), the lower axial end of the floating shaft sleeve (15) is fixedly connected with a lower end cover (25) of the floating shaft sleeve, the lower end of the transmission shaft bearing at the lower part is supported through the lower end cover (25) of the floating shaft sleeve, and the upper end of the transmission shaft bearing at the lower part is limited through a lower step of an inner hole of the floating shaft sleeve (15);
a fixed shaft sleeve (16) is sleeved on the floating shaft sleeve (15), a linear motion actuator (6) is installed on the outer surface of the fixed shaft sleeve (16), the piston rod end of the linear motion actuator (6) is fixedly connected with a floating connecting plate (5), the floating connecting plate (5) can reciprocate along the transmission shaft (3) under the action of the linear motion actuator (6), a limiting bolt (19) is fixed on the surface of the floating shaft sleeve (15), and the limiting bolt (19) extends into a waist-shaped groove of the fixed shaft sleeve (16);
the lower end of the transmission shaft (3) is fixedly provided with a bonding disc positioning column (11), the bottom surface of the bonding disc positioning column (11) is fixedly connected with a bonding disc (9), and the bottom surface of the bonding disc (9) is fixedly connected with a grinding and polishing disc (10).
2. The digital floating polishing spindle according to claim 1, wherein: the transmission shaft (3) upper portion installation sliding sleeve (2), fixed drive wheel (1) on sliding sleeve (2), the upper portion of transmission shaft (3) sets up sliding sleeve bearing mount pad (22) with the coaxial cooperation of the lower part of sliding sleeve (2), rotates through two upper and lower sliding sleeve bearings (4) between sliding sleeve (2) and sliding sleeve bearing mount pad (22) and supports.
3. The digital floating polishing spindle according to claim 2, wherein: positioning steps are respectively arranged at two axial ends of an inner hole of the sliding sleeve bearing mounting seat (22), wherein the upper end of the sliding sleeve bearing at the upper part is positioned through a shaft shoulder of the sliding sleeve (2), and the lower end of the sliding sleeve bearing at the upper part is positioned through the step at the upper part of the inner hole of the sliding sleeve bearing mounting seat (22);
the upper end of the sliding sleeve bearing at the lower part is positioned by the lower step of the inner hole of the sliding sleeve bearing mounting seat (22), and the lower end is positioned by a shaft retainer ring (18) arranged in a clamping groove at the lower part of the circumferential surface of the sliding sleeve (2);
the sliding sleeve (2) is connected with the transmission shaft (3) in a matching way through a flat key (21), and the transmission wheel (1) is fixedly connected with a boss of the sliding sleeve (2) through a bolt.
4. The digital floating polishing spindle according to claim 1, wherein: a spacing ring (24) is arranged above a transmission shaft bearing at the upper end of the floating shaft sleeve (15), and the spacing ring (24) is limited on the transmission shaft (3) through a locking nut (23);
the lower end of an inner hole matched with the floating connecting plate (5) and the transmission shaft (3) is provided with a radial extending part and an axial extending part, the distance between the radial extending part and the locking nut (23) is the axial movement stroke of the floating shaft sleeve (15), and the axial extending part is arranged in the inner hole of the floating shaft sleeve (15) in a matched mode.
5. The digital floating polishing spindle according to claim 1, wherein: the lower end of the linear motion actuator (6) is fixedly connected with a fixed shaft sleeve (16) through an actuator mounting column (7);
the inner sides of the two axial ends of the fixed shaft sleeve (16) are respectively provided with a guide sleeve (17), and the guide sleeves (17) are limited by guide sleeve limiting plates (20) respectively arranged at the two ends of the fixed shaft sleeve (16).
6. The digital floating polishing spindle according to claim 1, wherein: and a sealing ring (12) is arranged between the bonding disc positioning column (11) and the transmission shaft (3).
7. The digital floating polishing spindle according to claim 1, wherein: the positioning hole of the bonding disc positioning column (11) is fixedly connected with the transmission shaft (3) through a positioning bolt;
the step of bonding dish reference column (11) is gone up the cooperation and is set up bonding dish fixation nut (8), and the internal thread of bonding dish fixation nut (8) is connected with the external screw thread cooperation of bonding dish (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122329096.4U CN216265362U (en) | 2021-09-26 | 2021-09-26 | Digital floating grinding and polishing main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122329096.4U CN216265362U (en) | 2021-09-26 | 2021-09-26 | Digital floating grinding and polishing main shaft |
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| Publication Number | Publication Date |
|---|---|
| CN216265362U true CN216265362U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122329096.4U Active CN216265362U (en) | 2021-09-26 | 2021-09-26 | Digital floating grinding and polishing main shaft |
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| CN (1) | CN216265362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858040A (en) * | 2021-09-26 | 2021-12-31 | 江苏集萃华科智能装备科技有限公司 | Digital floating grinding and polishing spindle |
-
2021
- 2021-09-26 CN CN202122329096.4U patent/CN216265362U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858040A (en) * | 2021-09-26 | 2021-12-31 | 江苏集萃华科智能装备科技有限公司 | Digital floating grinding and polishing spindle |
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