CN112223035A

CN112223035A - Improved grinding head

Info

Publication number: CN112223035A
Application number: CN202011030006.5A
Authority: CN
Inventors: 林智敏; 洪培英; 魏随吉; 林榕栋; 黄嘉鸿
Original assignee: Quanzhou Haiende Electromechanical Technology Development Co ltd
Current assignee: Quanzhou Haiende Electromechanical Technology Development Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-15

Abstract

The invention discloses an improved grinding head, which comprises a central shaft, a shell, a differential mechanism, a track block and a plurality of swing seats, wherein the central shaft is arranged on the shell; a central shaft is arranged in the shell, and the shell and the central shaft rotate at the same speed; the track block is arranged in the shell and is rotationally connected to the central shaft, the plurality of swing seats are rotationally connected to the shell, and the swing seats form a grinding block mounting seat positioned on the outer side of the shell; the track block is coaxially and rotatably connected with the central shaft; a slide rail is arranged on the track block, a driving swing rod is arranged at one end of the swing seat in the shell, and a roller capable of being connected in the slide rail in a rolling manner is arranged at the free end of the driving swing rod; and a differential mechanism is connected between the track block and the central shaft and drives the track block and the central shaft to form differential motion. Compared with the prior art, the grinding block grinding machine has the advantages that the grinding block grinding machine has the characteristic that the grinding block can swing left and right when rotating around the central shaft by arranging the differential mechanism, the track block and the plurality of swing seats, and the grinding effect is improved.

Description

Improved grinding head

Technical Field

The invention relates to the field of grinding head equipment, in particular to an improved grinding head.

Background

The grinding and polishing of the stone is an important link in the stone processing process, and the surface of the stone is continuously ground by the grinding head so as to achieve certain smoothness. The module on the existing grinding head can only revolve around the main shaft, and the grinding effect is poor. The existing grinding head also has the defect of low grinding efficiency when the surface of the surface to be processed has large fluctuation.

In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.

Disclosure of Invention

The invention mainly aims to provide an improved grinding head which has the characteristic of improving the grinding effect.

In order to achieve the above purpose, the solution of the invention is:

an improved grinding head comprises a central shaft, a shell, a differential mechanism, a track block and a plurality of swing seats; a central shaft is arranged in the shell, and the shell and the central shaft rotate at the same speed; the track block is arranged in the shell and is rotatably connected to the central shaft, the swinging seats are rotatably connected to the shell, and the swinging seats form a grinding block mounting seat positioned on the outer side of the shell; the track block is coaxially and rotatably connected with the central shaft; a sliding rail is arranged on the rail block, a driving swing rod is arranged at one end of the swing seat in the shell, and a roller capable of being connected in the sliding rail in a rolling manner is arranged at the free end of the driving swing rod; and a differential mechanism is connected between the track block and the central shaft and drives the track block and the central shaft to form differential motion.

Further, the swinging shaft of the swinging seat is perpendicular to the central shaft.

Further, the roller is a roller pin roller bearing, and a roller shaft thread of the roller pin roller bearing is locked and installed on the driving swing rod.

Further, the differential mechanism includes a first external gear, a second external gear, and an internal gear ring; the first external gear is connected with the central shaft through a spline, and the second external gear is fixedly connected with the track block and is coaxially arranged with the central shaft; the first external gear and the second external gear are in meshed connection with each other simultaneously; the first external gear and the second external gear have different numbers of teeth.

Further, the number of teeth of the first external gear and the second external gear differs by 1 tooth.

Further, a bearing support is arranged on the outer side of the inner gear ring, and a needle roller bearing without an inner ring is arranged between the inner gear ring and the bearing support; the bearing support is connected with an upper fixing seat, the upper fixing seat is connected with the central shaft in a rotating mode, and a fixing mechanism used for enabling the upper fixing seat not to rotate along with the central shaft is connected to the upper fixing seat.

Further, an oil seal ring used for sealing the upper fixing seat is arranged between the edges of the upper end of the shell.

Furthermore, the upper fixing seat is rotatably connected with the central shaft through two bearings.

Furthermore, the lower end of the shell is connected with the central shaft through an angular contact thrust knuckle bearing, the central shaft is connected with a transmission cover through a spline, the transmission cover is positioned below the shell, a plurality of transmission holes are formed in the transmission cover, a plurality of transmission bolts are installed on the shell, and bolt heads of the transmission bolts extend into the transmission holes; and a locking end cover is arranged on the central shaft below the transmission cover, and a locking nut used for locking the locking end cover is also arranged on the central shaft.

Further, the track block with be provided with cylindrical roller bearing and biserial self-aligning roller bearing between the center pin, track block lower extreme is provided with the gland, gland lock connection is on the track block and supports tightly cylindrical roller bearing and biserial self-aligning roller bearing.

Furthermore, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are detachably and fixedly connected and enclose a containing cavity for installing the differential mechanism and the track block, and the swinging seat is rotatably connected to the lower shell.

Furthermore, a first oil plug and a second oil plug which are communicated with the housing accommodating cavity are arranged on the lower shell, the first oil plug is arranged on the side wall of the lower shell, and the second oil plug is arranged on the lower shell at the bottom of the housing oil cavity.

Furthermore, a water passing channel penetrating through the central shaft is formed on the central shaft, and a flange joint is formed at the upper end of the central shaft.

After adopting the structure, the improved grinding head provided by the invention at least has the following beneficial effects:

the shell rotates along with the rotation of the central shaft and drives the swing seat connected to the shell to rotate around the central shaft, so that the grinding block arranged on the grinding block mounting seat can grind stone or other plates at a high speed. Meanwhile, due to the action of the differential mechanism, the rotating speeds of the track block and the shell are different, so that a speed difference is formed, the shell rotates around the central shaft, and the swinging seat swings around the axis of the swinging seat under the driving of the sliding rail on the track block, so that the polishing effect is improved.

And secondly, through the mutual matching of the first external gear, the second external gear and the inner gear ring, the rotating speed between the second external gear and the second external gear is different, so that the rotating speed of the track block relative to the shell is far less than that of the shell.

And thirdly, the shell can swing at a small angle by arranging the angular contact thrust knuckle bearing, so that the polishing effect when the surface to be processed has larger fluctuation is improved.

Compared with the prior art, the grinding block grinding machine has the advantages that the grinding block grinding machine has the characteristic that the grinding block can swing left and right when rotating around the central shaft by arranging the differential mechanism, the track block and the plurality of swing seats, and the grinding effect is improved.

Drawings

Fig. 1 is a schematic view of the using state of an improved grinding head.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic cross-sectional structure of the present invention.

FIG. 4 is a schematic cross-sectional view of another embodiment of the present invention.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Fig. 6 is a schematic cross-sectional perspective view of the present invention.

Fig. 7 is a schematic perspective view of the swing seat and the driving swing link.

Fig. 8 is a schematic perspective view of the swing seat, the driving swing rod and the track block.

Fig. 9 is a perspective view of the first external gear and the ring gear.

In the figure:

a central shaft 1; a water passage 11; a flange joint 12;

a housing 2; an upper case 21; a lower case 22; angular contact thrust knuckle bearings 23; a transmission cover 24; a drive hole 241; locking the end cap 25; a lock nut 26; a first oil plug 27; a second oil plug 28;

a first external gear 31; a second external gear 32; the ring gear 33; a bearing support 34; the needle roller has no inner ring bearing 35; an upper fixing base 36; an oil seal ring 37; a fixing mechanism 38; a stopper rod 39;

a track block 4; a slide rail 41; a cylindrical roller bearing 42; a double row self aligning roller bearing 43; a gland 44;

a swing seat 5; a driving swing lever 51; needle roller bearings 52; a block mounting 53.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1 to 9, which is an improved grinding head according to the present invention, the grinding head includes a central shaft 1, a housing 2, a differential mechanism, a track block 4, and a plurality of swing seats 5, preferably, the number of the swing seats 5 is six, and the swing seats 5 are equidistantly and intermittently disposed on the housing 2; a central shaft 1 is arranged in the shell 2, and the shell 2 and the central shaft 1 rotate at a constant speed; the track block 4 is arranged in the shell 2 and is rotatably connected to the central shaft 1, a plurality of swing seats 5 are rotatably connected to the shell 2, and grinding block mounting seats 53 positioned on the outer side of the shell 2 are formed on the swing seats 5; the track block 4 is coaxially and rotatably connected with the central shaft 1; a slide rail 41 is arranged on the track block 4, a driving swing rod 51 is arranged at one end of the swing seat 5 in the shell 2, and a roller capable of being connected in the slide rail 41 in a rolling manner is arranged at the free end of the driving swing rod 51; and a differential mechanism is connected between the track block 4 and the central shaft 1, and drives the track block 4 and the central shaft 1 to form differential motion.

Thus, according to the improved grinding head of the present invention, the housing 2 rotates along with the rotation of the central shaft 1, and drives the swing seat 5 connected to the housing 2 to rotate around the central shaft 1, so that the grinding blocks mounted on the grinding block mounting seat 53 grind stone or other material plates at high speed. Meanwhile, due to the action of the differential mechanism, the rotation speeds of the track block 4 and the shell 2 are different, so that a speed difference is formed, and the swing seat 5 is driven by the slide rail 41 on the track block 4 to swing around the axis of the swing seat 5 while the shell 2 rotates around the central shaft 1, so that the grinding effect is improved.

Preferably, the swing axis of the swing base 5 is arranged perpendicular to the central axis 1. Therefore, the swinging shaft of the swinging seat 5 is approximately parallel to the grinding plane, and the grinding operation can be better carried out on the plane to be ground.

Preferably, the roller is a needle roller bearing 52, and a roller shaft of the needle roller bearing 52 is mounted on the driving swing link 51 in a threaded locking manner. Thus, the needle roller bearing 52 can ensure the smoothness of the roller on the slide rail 41 and ensure that the swing seat 5 can swing better along with the rotation of the housing 2.

Preferably, the differential mechanism includes a first external gear 31, a second external gear 32, and a ring gear 33; the first external gear 31 is connected with the central shaft 1 through a spline, and the second external gear 32 is fixedly connected with the track block 4 and is coaxially arranged with the central shaft 1; is eccentrically arranged with the central shaft 1 through an inner gear ring 33 and is simultaneously in meshed connection with the first outer gear 31 and the second outer gear 32; the first external gear 31 and the second external gear 32 have different numbers of teeth. Through the mutual matching of the first external gear 31, the second external gear 32 and the internal gear 33, the rotation speed between the second external gear and the second external gear 32 is different, so that the rotation speed of the track block 4 relative to the shell 2 is far less than the rotation speed of the shell 2 relative to the shell. Furthermore, when the swinging seats 5 swing, the grinding block mounting seats 53 on two adjacent swinging seats 5 are close to or far away from each other, that is, the two adjacent swinging seats 5 change back and forth between the inward splayed state and the outward splayed state.

Preferably, the number of teeth of the first external gear 31 and the second external gear 32 is different by 1 tooth. Thus, for example, the first external gear 31 has 35 teeth and the second external gear 32 has 36 teeth, and thus, after the arrangement, the housing 2 needs to rotate 36 times, and the track block 4 rotates 1 time relative to the housing 2.

Preferably, a bearing support 34 is arranged outside the inner gear ring 33, and a needle-roller inner-ring-free bearing 35 is arranged between the inner gear ring 33 and the bearing support 34; the bearing support 34 is connected with an upper fixing seat 36, the upper fixing seat 36 is rotatably connected with the central shaft 1, and the upper fixing seat 36 is connected with a fixing mechanism 38 for preventing the upper fixing seat 36 from rotating along with the central shaft 1. The fixing mechanism 38 comprises a limiting rod 39 connected to the base, the lower end of the limiting rod 39 is locked or tightly abutted to the upper surface of the fixing base, and the limiting rod 39 can slide on the base along with the lifting of the grinding head.

Preferably, an oil seal ring 37 for sealing with the upper fixing seat 36 is arranged between the edges of the upper end of the housing 2, so that external dust is prevented from entering the housing 2 to pollute the lubricating oil inside and influence the normal operation of the internal structure.

Preferably, the upper fixing seat 36 is rotatably connected with the central shaft 1 through two bearings. And a double-stage bearing is adopted, so that the running stability of the central shaft 1 is improved, and the running stability of the device is improved.

Preferably, the lower end of the outer shell 2 is connected with the central shaft 1 through an angular contact thrust knuckle bearing 23, a transmission cover 24 is connected to the central shaft 1 through a spline, the transmission cover 24 is located below the outer shell 2, a plurality of transmission holes 241 are formed in the transmission cover 24, a plurality of transmission bolts (not shown in the figure) are installed on the outer shell 2, and bolt heads of the transmission bolts extend into the transmission holes 241; a locking end cover 25 is arranged on the central shaft 1 below the transmission cover 24, and a locking nut 26 for locking the locking end cover 25 is further arranged on the central shaft 1. By arranging the angular contact thrust knuckle bearing 23, the housing 2 can swing at a small angle, so that the polishing effect when the surface to be processed has large fluctuation is improved.

Preferably, a cylindrical roller bearing 42 and a double-row self-aligning roller bearing 43 are arranged between the track block 4 and the central shaft 1, a gland 44 is arranged at the lower end of the track block 4, and the gland 44 is connected to the track block 4 in a locking manner and abuts against the cylindrical roller bearing 42 and the double-row self-aligning roller bearing 43.

Preferably, the housing 2 includes an upper housing 21 and a lower housing 22, the upper housing 21 and the lower housing 22 are detachably and fixedly connected and enclose a cavity for mounting the differential mechanism and the track block 4, and the swing seat 5 is rotatably connected to the lower housing 22. Thus, the assembly of the internal device structure is greatly facilitated by the way of assembling the upper case 21 and the lower case 22 to form the housing 2.

Preferably, a first oil plug 27 and a second oil plug 28 which are communicated with the cavity of the housing 2 are arranged on the lower housing 22, the first oil plug 27 is arranged on the side wall of the lower housing 22, and the second oil plug 28 is arranged on the lower housing 22 at the bottom of the oil cavity of the housing 2.

Preferably, a water passage 11 is formed on the central shaft 1 and penetrates the central shaft 1, and a flange joint 12 is formed at the upper end of the central shaft 1. When the water-spraying type polishing head is used for polishing, water needs to be sprayed to a polishing plane to improve polishing effect and reduce dust, and the water-spraying type polishing head is more compact in structure and can move along with the movement of the position of the polishing head in a central water injection mode.

Compared with the prior art, the grinding block disclosed by the invention has the characteristics that the grinding block can swing left and right when rotating around the central shaft 1 by arranging the differential mechanism, the track block 4 and the plurality of swing seats 5, and the grinding effect is improved.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. An improved grinding head is characterized by comprising a central shaft, a shell, a differential mechanism, a track block and a plurality of swing seats; a central shaft is arranged in the shell, and the shell and the central shaft rotate at the same speed; the track block is arranged in the shell and is rotatably connected to the central shaft, the swinging seats are rotatably connected to the shell, and the swinging seats form a grinding block mounting seat positioned on the outer side of the shell; the track block is coaxially and rotatably connected with the central shaft; a sliding rail is arranged on the rail block, a driving swing rod is arranged at one end of the swing seat in the shell, and a roller capable of being connected in the sliding rail in a rolling manner is arranged at the free end of the driving swing rod; and a differential mechanism is connected between the track block and the central shaft and drives the track block and the central shaft to form differential motion.

2. An improved grinding head according to claim 1, wherein the oscillation axis of said oscillating base is arranged perpendicularly to the central axis.

3. The improved grinding head according to claim 1, wherein said rollers are needle roller bearings, and roller shafts of said needle roller bearings are threadedly mounted on said drive rockers.

4. The improved grinding head according to claim 1, wherein said differential mechanism includes a first outer gear, a second outer gear, and an inner gear ring; the first external gear is connected with the central shaft through a spline, and the second external gear is fixedly connected with the track block and is coaxially arranged with the central shaft; the first external gear and the second external gear are in meshed connection with each other simultaneously; the first external gear and the second external gear have different numbers of teeth.

5. An improved grinding head according to claim 4, wherein the number of teeth of said first external gear and said second external gear differs by 1 tooth.

6. The improved grinding head according to claim 4, wherein a bearing support is arranged outside the inner gear ring, and a needle-roller inner-ring-free bearing is arranged between the inner gear ring and the bearing support; the bearing support is connected with an upper fixing seat, the upper fixing seat is connected with the central shaft in a rotating mode, and a fixing mechanism used for enabling the upper fixing seat not to rotate along with the central shaft is connected to the upper fixing seat.

7. The improved grinding head according to claim 1, wherein the lower end of the housing is connected with the central shaft through an angular contact thrust knuckle bearing, a transmission cover is connected to the central shaft through a spline, the transmission cover is located below the housing, a plurality of transmission holes are formed in the transmission cover, a plurality of transmission bolts are mounted on the housing, and bolt heads of the transmission bolts extend into the transmission holes; and a locking end cover is arranged on the central shaft below the transmission cover, and a locking nut used for locking the locking end cover is also arranged on the central shaft.

8. The improved grinding head according to claim 1, wherein a cylindrical roller bearing and a double-row self-aligning roller bearing are disposed between the track block and the central shaft, a gland is disposed at a lower end of the track block, and the gland is locked on the track block and abuts against the cylindrical roller bearing and the double-row self-aligning roller bearing.

9. The improved grinding head according to claim 1, wherein said housing comprises an upper housing and a lower housing, said upper housing and said lower housing being detachably and fixedly connected and enclosing a cavity for mounting said differential mechanism and said rail block, said swinging seat being rotatably connected to said lower housing.

10. An improved grinding head according to claim 1, wherein said central shaft is formed with a water passage extending therethrough along the central shaft, and a flange joint is formed at an upper end of said central shaft.