CN110860965A

CN110860965A - Steel cap cleaning and grinding machine and grinding method

Info

Publication number: CN110860965A
Application number: CN202010057083.3A
Authority: CN
Inventors: 赵冠超
Original assignee: Laizhou Boenke Automation Technology Co Ltd
Current assignee: Laizhou Boenke Automation Technology Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-03-06

Abstract

The invention discloses a steel cap cleaning polisher and a polishing method, the steel cap cleaning polisher comprises a machine table and an electric controller, a workpiece two-axis feeding mechanism, a workpiece rotating and clamping mechanism and a grinding head feeding mechanism are arranged on the machine table, the grinding head feeding mechanism comprises a Z-axis lifting mechanism and a polishing assembly for polishing a workpiece, the workpiece two-axis feeding mechanism comprises an X-axis moving mechanism and a Y-axis moving mechanism, the Y-axis moving mechanism comprises a Y-axis carriage, the workpiece rotating and clamping mechanism is arranged on the Y-axis carriage, the workpiece rotating and clamping mechanism comprises a clamp seat, a driving shaft and a tip, the driving shaft and the tip are oppositely arranged, the workpiece is arranged between the driving shaft and the tip and is driven to rotate by the driving shaft, and the outer surface of the workpiece is cleaned and polished by the grinding head, the steel cap cleaning polisher disclosed by the invention can rapidly assemble and disassemble the workpiece, the processing efficiency is obviously improved.

Description

Steel cap cleaning and grinding machine and grinding method

Technical Field

The invention relates to the technical field of polishing of shells of steel cap products, in particular to an automatic cleaning polisher and a polishing method for a steel cap.

Background

The steel cap is a part widely applied to a power line, the main body of the steel cap is in a cap shape, the top of the cap-shaped main body is provided with a mounting seat connected with other parts, the middle of the mounting seat is provided with a U-shaped bayonet, and the top of the bayonet is provided with a through hole. The steel cap is usually manufactured by casting into a blank by a casting method and then cleaning and polishing. The cast electric steel cap blank is rough in surface, foreign matters on the surface need to be removed, protrusions such as cutting ribs, fadings and burrs are ground, and the electric steel cap blank can be processed in the next process after being ground and cleaned. Most of the prior steel caps are ground manually or are fixed by a single internal tensioning clamp and then are ground and polished; the dust that artifical burnishing and polishing produced endangers the health of people, and the vibrations that produce can harm joint and viscera when polishing, still can produce harm such as noise pollution to there is the not accurate, needs many times clamping, transport many times, the technical problem of many times processing in the centre gripping location mode with single interior tightening clamp. The processing mode also has the technical problems of high labor intensity and low working efficiency.

Disclosure of Invention

The invention provides a steel cap cleaning and grinding machine and a grinding method, aiming at the technical problems that in the prior art, the grinding process of a shell of a steel cap product is complex and the grinding needs to be carried out manually.

The technical scheme adopted by the invention is as follows: a steel cap cleaning and grinding machine comprises a machine table and an electric controller, wherein the electric controller is positioned on one side of the machine table, a workpiece two-axis feeding mechanism, a workpiece rotating and clamping mechanism and a grinding head feeding mechanism are arranged on the machine table, the grinding head feeding mechanism comprises a Z-axis lifting mechanism and a grinding assembly for grinding a workpiece, the grinding assembly is arranged on the Z-axis lifting mechanism, and the grinding assembly comprises a grinding head, a grinding head main shaft and a grinding head motor;

the workpiece two-shaft feeding mechanism comprises an X-shaft moving mechanism and a Y-shaft moving mechanism, the X-shaft moving mechanism is installed on a machine table, the X-shaft moving mechanism is provided with the Y-shaft moving mechanism, the Y-shaft moving mechanism comprises a Y-shaft carriage, the workpiece rotary clamping mechanism is arranged on the Y-shaft carriage, the workpiece rotary clamping mechanism comprises a clamp seat, a driving shaft and a tip, the driving shaft and the tip are installed on the clamp seat respectively, the driving shaft and the tip are arranged oppositely, and a positioning block is arranged at the end part of the driving shaft; the center is arranged in a center sleeve through a bearing, the center sleeve is arranged in a sliding barrel, the outer wall of the center sleeve is conical, and the inner wall of the sliding barrel is conical and is matched with the center sleeve in shape.

Further, an air cylinder is further installed on the clamp seat and connected with the center through a center sleeve.

Further, X axle moving mechanism includes X axle guide rail, X axle guide rail is installed on the board, X axle guide rail one side is equipped with X axle servo motor, X axle servo motor is connected with X axle lead screw, be equipped with X axle lead screw seat on the X axle lead screw, X axle servo motor drive X axle lead screw is rotatory to make X axle lead screw seat remove along X axle lead screw.

Further, the Y-axis moving mechanism comprises a Y-axis guide rail arranged on the X-axis lead screw seat and a Y-axis servo motor arranged on one side of the Y-axis guide rail, the Y-axis servo motor is connected with the Y-axis lead screw, a Y-axis lead screw seat is arranged on the Y-axis lead screw, the Y-axis lead screw seat is connected with the Y-axis carriage, a Y-axis sliding block is further arranged on the Y-axis guide rail and also connected with the Y-axis carriage, the Y-axis servo motor drives the Y-axis lead screw to rotate so that the Y-axis lead screw seat moves along the Y-axis lead screw, and the Y-axis lead screw seat drives the Y-axis carriage to move along the Y-axis guide rail.

Further, Z axle elevating system includes Z axle mount, Z axle mount sets up on the board, the both sides of Z axle mount are equipped with two Z axle guide rails respectively in parallel, be equipped with Z axle servo motor on two Z axle guide rails, Z axle servo motor is connected with Z axle lead screw, be provided with Z axle lead screw seat on the Z axle lead screw, Z axle servo motor drive Z axle lead screw is rotatory to make Z axle lead screw seat remove along Z axle lead screw, and Z axle lead screw seat drives Z axle and removes the seat and remove along Z axle guide rail.

Furthermore, a plurality of workpiece rotating and clamping mechanisms are arranged on the Y-axis carriage, a plurality of grinding heads are arranged on the grinding assembly, and the number of the grinding heads is consistent with that of the workpiece rotating and clamping mechanisms.

Further, the polishing assembly further comprises a multi-wedge belt transmission device, the multi-wedge belt transmission device comprises a multi-wedge wheel, a multi-wedge belt and a tensioning wheel, the multi-wedge wheel comprises a driving multi-wedge wheel and a driven multi-wedge wheel, the driving multi-wedge wheel is connected with a grinding head motor, the driving multi-wedge wheel is connected with the driven multi-wedge wheel through the multi-wedge belt, and the driven multi-wedge wheel is connected with a grinding head.

Further, steel cap clearance polisher still is equipped with the aircraft bonnet, electrical controller is located the outside of aircraft bonnet, the diaxon feed mechanism, the work piece rotary clamping mechanism, the bistrique feed mechanism of board and setting on the board all set up the inside at the aircraft bonnet.

Furthermore, the positioning blocks arranged on the driving shaft are two bosses which are oppositely arranged.

The invention also discloses a polishing method of the steel cap polisher, which comprises the following steps:

a: placing a workpiece on a positioning block on a driving shaft of a rotary clamping mechanism, and starting a cylinder to drive a tip to move so as to clamp and position the workpiece;

b: the X-axis moving mechanism drives the workpiece to move left and right to realize X-axis servo feeding of the workpiece, the Y-axis moving mechanism drives the workpiece to move back and forth to realize Y-axis servo feeding of the workpiece, and the workpiece rotary clamping mechanism drives the workpiece to rotate in the vertical direction; the Z-axis lifting mechanism drives the polishing assembly to move up and down to a proper position, and the grinding head grinds the workpiece.

C: after the workpiece is ground, the X-axis moving mechanism, the Y-axis moving mechanism and the Z-axis moving mechanism return to the original point, the grinding head stops running, the air cylinder is loosened, and the workpiece is loaded and unloaded.

The invention has the following beneficial effects:

firstly, through the servo motion of multiaxis intelligent control, the bistrique realizes 3D profile modeling motion to the work piece surface to realize the burnishing and polishing of work piece surface. According to the steel cap cleaning and grinding machine, the complete profiling of the appearance of the workpiece is realized through the servo motion of five shafts through the arrangement of the X-shaft moving mechanism, the Y-shaft moving mechanism, the Z-shaft lifting mechanism, the workpiece rotating and clamping mechanism and the grinding head driving mechanism, so that the grinding track and the grinding cutting amount are controlled, the grinding quality is ensured, the grinding precision is effectively ensured, the grinding precision is high, and the grinding and polishing effects are good.

Secondly, the positioning block arranged on the workpiece driving shaft is used for positioning and driving the workpiece, the technical effects of rapid and convenient workpiece loading and unloading and accurate positioning are achieved, and the machining efficiency is obviously improved.

Thirdly, a plurality of workpiece rotating and clamping mechanisms can be arranged on the Y-axis carriage, a plurality of polishing assemblies can be arranged on the Z-axis lifting mechanism, and one device can process a plurality of workpieces simultaneously, so that the production efficiency is improved, and the production cost is reduced.

Fourthly, the grinding head assembly adopts a multi-wedge wheel transmission mode, and has the advantages of stable transmission, low noise and high rotating speed.

Drawings

FIG. 1: the invention has a vertical view of the whole machine;

FIG. 2: a schematic view of a rotary clamping mechanism;

FIG. 3: a cross-sectional view of the rotary clamping mechanism;

FIG. 4: a schematic view of a two-axis feed mechanism;

FIG. 5: schematic diagram of X-axis moving mechanism;

FIG. 6: a Z-axis lifting mechanism schematic view;

FIG. 7: a schematic view of a grinding assembly;

FIG. 8: a cross-sectional view of a plane a-a of the sanding assembly.

In the figure, [2] [3] 1: machine table, 2: z-axis mount, 3: z-axis lifting mechanism, 301: z-axis servo motor, 302: z-axis screw mount, 303: z-axis slider, 304: z-axis guide, 4: grinding component, 401: driven multi-wedge wheel, 402: v-ribbed belt, 403: driven multi-wedge wheel, 404: transmission case, 405: tension roller, 406: driving multi-wedge wheel, 407: tension roller, 408: a grinding head, 409: grinding head spindle, 410: spindle stock, 411: a wheel head motor, 412: a grinding head, 5: rotary clamping mechanism, 501: tip, 502: apical sheath, 503: rolling bearing, 504: thrust bearing, 505: slide cylinder, 506: sliding cylinder seat, 507: air cylinder, 508: clamp seat, 509: servo motor, 510: speed reducer, 511: drive shaft, 512: drive shaft, 513: fixture seat, 514, positioning block, 515: a transmission shaft seat; 6: y-axis moving mechanism, 601: y-axis carriage, 602, Y-axis guide rail, 603: y-axis servo motor, 604: y-axis slider, 605: y-axis screw mount, 606: y-axis carriage, 7: x-axis moving mechanism, 701: x-axis servo motor, 702: x-axis lead screw, 703: x-axis slider, 704: x-axis guide, 705: x-axis screw base.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the accompanying drawings, which illustrate only some embodiments of the invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality", and "a plurality" mean two or more unless otherwise specified.

As shown in fig. 1 to 8, a steel cap cleaning polisher includes a machine table 1 and an electrical controller (not shown in the figure), the electrical controller is located one side of the front of the machine table 1, a workpiece two-axis feeding mechanism, a rotary clamping mechanism 5 and a polishing head feeding mechanism are arranged on the machine table 1, and the polishing head feeding mechanism includes a Z-axis lifting mechanism 3 and a polishing assembly 4 mounted on the Z-axis lifting mechanism 3.

The workpiece two-axis feeding mechanism comprises an X-axis moving mechanism 7 and a Y-axis moving mechanism 6; the X-axis moving mechanism 7 is installed on the machine table 1, a Y-axis moving mechanism 6 is arranged on the X-axis moving mechanism 7, a rotary clamping mechanism 5 is arranged on the Y-axis moving mechanism 6, and the rotary clamping mechanism 5 comprises a driving shaft 512 and a top tip 501; the polishing head feeding mechanism comprises a Z-axis lifting mechanism 3 and a polishing assembly 4 used for polishing a workpiece, the Z-axis lifting mechanism 3 is arranged on the machine table 1 and is arranged beside the Z-axis fixing frame 2, and the polishing assembly 4 used for polishing the workpiece is arranged on the Z-axis lifting mechanism 3.

As shown in fig. 1, 4, and 5, the X-axis moving mechanism 7 includes two X-axis guide rails 704, an X-axis servo motor 701, an X-axis lead screw 702, and an X-axis slider 703, the two X-axis guide rails 704 are distributed side by side, both the two X-axis guide rails 704 are installed on the machine platform 1, the X-axis servo motor 701 is disposed between the two X-axis guide rails 704, the X-axis servo motor 701 is connected to the X-axis lead screw 702, an X-axis lead screw seat 705 is disposed on the X-axis lead screw 702, the X-axis servo motor 701 drives the X-axis lead screw 702 to rotate, the X-axis lead screw 702 drives the X-axis lead screw seat 705 to move along the X-axis lead screw, the X-axis lead screw seat 705 is connected to the Y-axis slider 606, the two X-axis guide rails 704 are further provided with the X-axis slider 703, and the X-axis slider 703 is also. The X-axis lead screw seat 705 drives the Y-axis slide seat 606 to move along the X-axis lead screw, the X-axis lead screw seat 705 also drives the X-axis slide block 703 to move along the corresponding X-axis guide rail 704, and the X-axis slide block 703 is arranged at the bottom of the Y-axis slide seat 606, so that the moving stability of the Y-axis slide seat 606 can be improved, and the friction force generated when the Y-axis slide seat 606 moves along the X-axis guide rail 704 is reduced.

The Y-axis moving mechanism 6 comprises a Y-axis slide carriage 606, Y-axis plankers 601, Y-axis guide rails 602, Y-axis servo motors 603, Y-axis sliders 604 and Y-axis lead screw seats 605, the number of the Y-axis guide rails 602 is two, the two parallel Y-axis guide rails 602 are distributed on the Y-axis slide carriage 606, one side of the Y-axis guide rails 602 is provided with the Y-axis servo motors 603, the two Y-axis guide rails 602 are respectively provided with the Y-axis sliders 604, the Y-axis sliders 604 are fixedly connected with the Y-axis plankers 601, the Y-axis servo motors 603 are connected with the Y-axis lead screws, the Y-axis lead screws are connected with the Y-axis lead screw seats 605, the Y-axis lead screw seats 605 are fixedly arranged on the Y-axis plankers 601, the Y-axis servo motors 603 drive the Y-axis lead screws to rotate to enable the Y-axis plankers 605 to move along the Y-axis lead screws, the Y-axis plankers 605 further drive the Y-axis plankers 601 to move along the Y-axis guide rails 602, the Y-axis, the Y-axis carriage 601 is provided with a Y-axis sliding block 604 which can increase the moving stability of the Y-axis carriage 601 along the Y-axis guide rail 602, and the rotary clamping mechanism 5 is arranged on the Y-axis carriage 601.

As shown in fig. 2 and 3, the rotary clamping mechanism 5 includes a driving shaft 512 and an apex 501, a positioning block 514 is disposed at an end of the driving shaft 512, in this embodiment, the positioning block 514 is in the shape of two bosses oppositely disposed, the shapes of the two bosses are adapted to the shape of the bottom of a steel cap of a workpiece to be processed, the bottom of the steel cap can be directly sleeved on the positioning block 514 of the driving shaft, and the apex 501 is in contact with the top of the workpiece to press the workpiece onto the driving shaft 512, so as to prevent the workpiece from falling off during the processing process.

Specifically, the tip 501 comprises a top portion and a neck portion, and the neck portion of the tip is mounted in an inner hole of the tip sleeve 502 through a rolling bearing 503 to reduce resistance when the tip 501 rotates in the tip sleeve 502. The center sleeve 502 comprises a front part and a rear part, the inner diameter of the front half part is larger than that of the rear half part, a thrust bearing 504 is installed at a connecting platform of the front part and the rear part, the inner end surface of the center 501 is in contact with the thrust bearing 504, the outer end surface of the center 501 is in contact with a workpiece, the inner surface of a rolling bearing 503 is installed at the neck of the center 501, and the outer surface of the rolling bearing is installed in an inner hole of the front half part of the center sleeve 502; the outer surface of the rear half part of the center sleeve 502 is conical, the rear half part of the center sleeve 502 is arranged in the sliding barrel 505, the inner surface of the sliding barrel 505 is conical, the shape of the inner surface of the sliding barrel is matched with that of the outer surface of the center sleeve 502, and the center sleeve 502 and the sliding barrel 505 are in taper fit, so that the center sleeve and the sliding barrel 505 can be conveniently assembled and disassembled, and a workpiece can be conveniently assembled and disassembled. The sliding cylinder 505 is fixedly arranged in a sliding cylinder seat 506, the sliding cylinder seat 506 is arranged on a clamp seat 508, the clamp seat 508 is further provided with a cylinder 507, a piston of the cylinder 507 is in contact with a center sleeve 502, the cylinder 507 transmits thrust to a center 501 through the center sleeve 502, the center 501 is pushed to be close to a workpiece, the workpiece is prevented from falling off from the rotary clamping mechanism 5 in the process of machining, and centers of different shapes can be replaced to be suitable for the workpiece according to the change of the shape of the workpiece.

In this embodiment, a driving shaft 512 is arranged opposite to the center 501, the driving shaft 512 is connected with a driving shaft 511, the driving shaft 511 is connected with a speed reducer 510, the speed reducer 510 is connected with a servo motor 509, the driving shaft 511 is arranged on a driving shaft seat 515, the speed reducer 510 and the driving shaft seat 515 are both arranged on a fixture seat 513, the servo motor 509 transmits power to the driving shaft 512 through the speed reducer 510, a positioning block 514 is arranged at the end of the driving shaft 512, the shape of the positioning block 514 is matched with the shape of the bottom of a steel cap workpiece, the driving shaft 512 positions the workpiece through the positioning block 514 and drives the workpiece to rotate, the grinding head 408 polishes the outer surface of the workpiece in the rotating process of the workpiece, and the positioning block 514 is arranged on the driving shaft 512 to quickly clamp and disassemble the workpiece, so that.

As shown in fig. 1 and 6, the Z-axis lifting mechanism 3 includes a Z-axis fixing frame 2, the Z-axis fixing frame 2 is disposed on the machine platform 1, two Z-axis guide rails 304 are respectively arranged on two sides of the Z-axis fixing frame 2 in parallel, a Z-axis servo motor 301 is arranged between the two Z-axis guide rails 304, the Z-axis servo motor 301 is fixedly arranged on the Z-axis fixing frame 2, the Z-axis servo motor 301 is connected with the Z-axis screw rod, a Z-axis screw rod seat 302 is arranged on the Z-axis screw rod, Z-axis slide blocks 303 are respectively arranged on the two Z-axis guide rails 304, the Z-axis lead screw seat 302 is connected with the grinding component 4, the Z-axis slide block 303 is also connected with the grinding component 4, z axle servo motor 301 drive Z axle lead screw is rotatory to make Z axle lead screw seat 302 remove along Z axle lead screw, and Z axle lead screw seat 302 and then drives the subassembly 4 of polishing and remove along the Z axle guide rail. The Z-axis slider 303 is driven by the grinding assembly 4 to move along the Z-axis guide rail 304, the Z-axis slider 303 can reduce the resistance of the grinding assembly 4 to move along the Z-axis guide rail 304, and the stability of the grinding assembly 4 to move along the Z-axis guide rail 304 is improved.

As shown in fig. 7 and 8, in this embodiment, the grinding assembly 4 includes a grinding head 412, a grinding head 408, a grinding head spindle 409, a grinding head motor, and a v-belt transmission device, where the v-belt transmission device includes a driving v-belt 406, driven v-

belts

401 and 403,

tension wheels

405 and 407, and a v-belt 402, and the driving v-belt, the driven v-belt, the tension wheels, and the v-belt are all installed inside a transmission case 404.

In this embodiment, the number of the grinding heads is two, the number of the grinding head spindles 409 is also two, and is the same as the number of the grinding heads, the driving multi-wedge wheel 406 is connected to a motor shaft of the grinding head motor 411 and is driven by the grinding head motor 411 to rotate, the driven

multi-wedge wheels

401 and 403 are both mounted on the transmission case 404 through respective spindles, the multi-wedge belts 402 are wound on outer surfaces of the driven

multi-wedge wheels

401 and 403 and the driving multi-wedge wheel 406, the driving multi-wedge wheel 406 drives the driven

multi-wedge wheels

401 and 403 to rotate through the multi-wedge belts 402, the grinding head 408 is connected to the driven multi-wedge wheel 401 through the grinding head spindle, the grinding head 412 is connected to the driven multi-wedge wheel 403 through the grinding head spindle, and the two grinding heads are driven to rotate by the two driven multi-wedge wheels. The two

tension wheels

405 and 407 are respectively arranged between the driving multi-wedge pulley 406 and the two driven

multi-wedge pulleys

403 and 401, and the positions of the two

tension wheels

405 and 407 on the transmission case 404 can be adjusted to adjust the tension degree of the multi-wedge belt 402 on the surfaces of the driving multi-wedge pulley 406 and the driven

multi-wedge pulleys

401 and 403, so as to ensure that the multi-wedge belt transmission device can operate stably.

In this embodiment, the number of the rotary clamping mechanisms 5 on the Y-axis carriage is two, the number of the grinding heads in the grinding assembly 4 is also two, the positions of the grinding heads correspond to the positions where the workpieces in the rotary clamping mechanisms 5 are clamped, the two grinding heads can simultaneously process the respective corresponding workpieces, and the special steel cap grinding device disclosed in this embodiment can simultaneously process two workpieces.

In this embodiment, steel cap clearance polisher still is equipped with the aircraft bonnet, the electrical apparatus controller is located the outside of aircraft bonnet, the diaxon feed mechanism, the rotary clamping mechanism, the bistrique feed mechanism of board and setting on the board all set up the inside at the aircraft bonnet. Set up the aircraft bonnet and can prevent that the iron fillings that the steel cap is polished the in-process and produce from the board departure accidental injury equipment operation personnel, prevent to take place the safety in production accident.

The polishing method of the steel cap polisher comprises the following steps:

a: placing a workpiece on a positioning block of a driving shaft of a rotary clamping mechanism, and starting an air cylinder to push a tip to move so as to clamp and position the workpiece;

Claims

1. The utility model provides a steel cap clearance polisher, includes board and electrical controller, its characterized in that: the electric appliance controller is positioned on one side of the machine table, a workpiece two-axis feeding mechanism, a workpiece rotating and clamping mechanism and a grinding head feeding mechanism are arranged on the machine table, the grinding head feeding mechanism comprises a Z-axis lifting mechanism and a grinding assembly for grinding a workpiece, the grinding assembly is arranged on the Z-axis lifting mechanism, and the grinding assembly comprises a grinding head, a grinding head main shaft and a grinding head motor;

the workpiece two-shaft feeding mechanism comprises an X-shaft moving mechanism and a Y-shaft moving mechanism, the X-shaft moving mechanism is installed on a machine table, the X-shaft moving mechanism is provided with the Y-shaft moving mechanism, the Y-shaft moving mechanism comprises a Y-shaft carriage, the workpiece rotary clamping mechanism is arranged on the Y-shaft carriage, the workpiece rotary clamping mechanism comprises a clamp seat, a driving shaft and a tip, the driving shaft and the tip are installed on the clamp seat respectively, the driving shaft and the tip are arranged oppositely, and a positioning block is arranged at the end part of the driving shaft;

the center is arranged in a center sleeve through a bearing, the center sleeve is arranged in a sliding barrel, the outer wall of the center sleeve is conical, and the inner wall of the sliding barrel is conical and is matched with the center sleeve in shape.

2. The steel cap cleaning sander according to claim 1, wherein: and the clamp seat is provided with an air cylinder, and the air cylinder is connected with the center through a center sleeve.

3. The steel cap cleaning and grinding machine according to claim 2, wherein the X-axis moving mechanism comprises an X-axis guide rail, the X-axis guide rail is mounted on the machine table, an X-axis servo motor is arranged on one side of the X-axis guide rail and connected with an X-axis lead screw, an X-axis lead screw seat is arranged on the X-axis lead screw, and the X-axis servo motor drives the X-axis lead screw to rotate so that the X-axis lead screw seat moves along the X-axis lead screw.

4. The steel cap cleaning sander of claim 3, wherein: the Y-axis moving mechanism comprises a Y-axis guide rail and a Y-axis servo motor, the Y-axis guide rail is mounted on an X-axis lead screw seat, the Y-axis servo motor is mounted on one side of the Y-axis guide rail and connected with a Y-axis lead screw, a Y-axis lead screw seat is arranged on the Y-axis lead screw and connected with a Y-axis carriage, a Y-axis sliding block is further arranged on the Y-axis guide rail and also connected with the Y-axis carriage, the Y-axis servo motor drives the Y-axis lead screw to rotate so that the Y-axis lead screw seat moves along the Y-axis lead screw, and the Y-axis lead screw seat drives the Y-axis carriage to move along the Y-axis guide rail.

5. The steel cap cleaning and grinding machine according to claim 4, wherein the Z-axis lifting mechanism comprises a Z-axis fixing frame, the Z-axis fixing frame is arranged on the machine table, two Z-axis guide rails are respectively arranged on two sides of the Z-axis fixing frame in parallel, a Z-axis servo motor is arranged on the two Z-axis guide rails and connected with a Z-axis screw rod, a Z-axis screw rod seat is arranged on the Z-axis screw rod, the Z-axis servo motor drives the Z-axis screw rod to rotate so that the Z-axis screw rod seat moves along the Z-axis screw rod, and the Z-axis screw rod seat further drives the Z-axis moving seat to move along the Z-axis guide rails.

6. The steel cap cleaning and grinding machine according to claim 5, wherein the Y-axis carriage is provided with a plurality of workpiece rotating and clamping mechanisms, the grinding assembly is provided with a plurality of grinding heads, and the number of the grinding heads is consistent with the number of the workpiece rotating and clamping mechanisms.

7. The steel cap cleaning and polishing machine according to claim 6, wherein the polishing assembly further comprises a poly-v-belt transmission device, the poly-v-belt transmission device comprises a poly-v-belt, a poly-v-belt and a tension wheel, the poly-v-belt transmission device comprises a driving poly-v-belt and a driven poly-v-belt, the driving poly-v-belt is connected with the grinding head motor, and the driving poly-v-belt is connected with the driven poly-v-belt through the poly-v-belt.

8. The steel cap cleaning sander according to claim 7, wherein the locating block provided on the drive shaft is two bosses provided opposite to each other.

9. A method of grinding in a steel cap cleaning sander as set forth in any one of claims 1 to 8, wherein: the method comprises the following steps:

a: placing a workpiece on a positioning block at the end part of a driving shaft of a rotary clamping mechanism, and starting an air cylinder to drive a tip to move so as to clamp and position the workpiece;

b: the X-axis moving mechanism drives the workpiece to move left and right to realize X-axis servo feeding of the workpiece, the Y-axis moving mechanism drives the workpiece to move back and forth to realize Y-axis servo feeding of the workpiece, and the workpiece rotary clamping mechanism drives the workpiece to rotate in the vertical direction; the Z-axis lifting mechanism drives the polishing assembly to move up and down to a proper position, and the grinding head grinds the workpiece;