CN218427309U - Burnishing and polishing device for machining - Google Patents

Abstract

The utility model relates to the technical field of machining, in particular to a grinding and polishing device for machining; the utility model discloses a workstation and set up on the workstation and have the polishing subassembly of external control ware control, drive assembly and supporting component, the inside sunken formula of workstation top is seted up flutedly, the workstation all is equipped with the baffle at the notch border at the vertical both ends of recess, drive assembly includes second guide rail board, the slider, first electric putter, rotation seat and gyro wheel, two gyro wheels are connected through belt drive, be equipped with the driving motor who drives gyro wheel on it on arbitrary rotation seat, supporting component includes horizon bar, bracing piece, third guide rail board and rotating electrical machines, two bracing pieces of same horizontal end are by the synchronous reverse motion of corresponding rotating electrical machines drive, and the horizontal both ends of workstation still all are equipped with transport assembly; the utility model discloses can solve prior art effectively and have the polishing effect not good, application scope is narrower and the not good scheduling problem of reliability.

Description

Burnishing and polishing device for machining

Technical Field

The utility model relates to a machining technical field, concretely relates to burnishing and polishing device for machining.

Background

Machining refers to a process of changing the physical dimensions or properties of a workpiece by a mechanical device. The difference in the machining method can be divided into cutting machining and pressing machining.

In the application number: CN202021283686.7 discloses a steel pipe burnishing and polishing device for machining production, including the burnishing device body, burnishing device body inboard upper end is equipped with the storage storehouse, the inboard bottom laminating in storage storehouse is equipped with the vibrations board, vibrations board lower extreme fixed surface is equipped with the first slide bar of a plurality of, the fixed transmission connecting plate that is equipped with of first slide bar one end, motor drive lead screw is rotatory to drive the nut and remove, drive the second sliding sleeve and steadily slide on second slide bar surface simultaneously, indirectly drive the installation cover lateral shifting of polishing, the inside second conveyer belt of installation cover of polishing pastes at the steel pipe upper end surface rotation this moment, the inside auxiliary roll of recess in the first conveyer belt follows the rotation, thereby drive the steel pipe rotation, the motor drives the polishing roller and makes a round trip to polish to the steel pipe surface constantly at this moment, improved the efficiency of polishing greatly, and structure scientific and reasonable, convenience safe in utilization provides very big help for the people.

However, the following disadvantages still exist in the practical application process:

firstly, the grinding and polishing effect is poor, because the thickness of the steel pipe is gradually thinned after grinding, the distance between the steel pipe and the grinding roller is increased gradually in the grinding process invisibly, namely the contact pressure between the grinding roller and the steel pipe is reduced gradually, so that the grinding and polishing force of the grinding roller to the steel pipe is insufficient in the second half of the grinding process; furthermore, the grinding roller body is gradually consumed with use, that is, the size of the grinding roller body is gradually reduced, and the device in the above-mentioned reference document needs to be replaced with a new grinding roller, which increases the cost.

Secondly, the application range is narrow, because the distance between the grinding roller and the steel pipe in the comparison document device is fixed, the steel pipes with different radius sizes cannot be processed simultaneously; in addition, the steel pipe is freely and movably arranged in the second groove on the first conveyor belt, so that the steel pipe is easy to move on the axis when the polishing roller and the second conveyor belt polish and polish the steel pipe, and the polishing roller can only polish part of the pipe body of the steel pipe

Thirdly, reliability is not good because the first conveyor belt, on which chips generated when the steel pipe is ground are scattered, is located everywhere, so that the rotation of the second auxiliary roller on the second conveyor belt is blocked.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

To the above-mentioned shortcoming that prior art exists, the utility model provides a burnishing and polishing device for machining can solve prior art effectively and have the not good, the narrow and not good scheduling problem of reliability of application scope of burnishing and polishing effect.

Technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a grinding and polishing device for machining comprises a workbench, a grinding assembly, a driving assembly and a supporting assembly, wherein the grinding assembly, the driving assembly and the supporting assembly are arranged on the workbench and controlled by an external controller;

the top of the workbench is provided with a groove in an inward-recessed manner, and the edges of the notches at the two longitudinal ends of the groove of the workbench are respectively provided with a baffle;

the polishing assembly comprises first guide rail plates arranged at the tops of the baffles, a cross arm movably erected on the two first guide rail plates, a water cutter head arranged in the middle of the cross arm and with an outlet facing downwards, and a pressure pump and a water storage tank which are arranged on the ground and are sequentially connected with the water cutter head through a water pipe;

the driving assembly comprises second guide rail plates symmetrically arranged on the inner side walls of the two longitudinal ends of the groove, a sliding block arranged on the second guide rail plates, a first electric push rod vertically arranged at the top of the sliding block, a rotating seat arranged at the top of the first electric push rod and rollers arranged on the rotating seat, the two rollers are in transmission connection through a belt, and a driving motor for driving the rollers on any one of the rotating seats is arranged on the rotating seat;

the supporting component comprises horizontal rods, supporting rods, third guide rail plates and a rotating motor, two horizontal rods are erected in the longitudinal symmetry of the top of the workbench, the end parts of the horizontal rods are connected to the tops of the corresponding supporting rods in a rotating mode, and the bottoms of the two supporting rods at the same transverse end are movably connected to the same third guide rail plate and driven by the corresponding rotating motor to move in the opposite direction.

Furthermore, supporting legs are arranged at the top corners of the bottom of the workbench, and a drain pipe is further arranged at the bottom of the workbench.

Furthermore, transparent glass matched with the baffles is embedded on the baffles.

Furthermore, the transparent glass is internally provided with a PVB film interlayer, and the inner side surface of the transparent glass is provided with a hydrophobic membrane.

Furthermore, the first guide rail plates are respectively provided with a first motor and a first screw rod which are matched with the first motor, the end parts of the cross arms are respectively provided with a first screw groove which is matched with the corresponding first screw rod in a penetrating way, and the travel of the cross arms on the first guide rail plates is larger than the length of the grooves in the transverse direction.

Furthermore, the water storage tank is pre-filled with mixed liquid formed by water and grinding materials.

Furthermore, a grid plate matched with the groove is further arranged inside the groove close to the bottom wall of the groove, a group of water leakage holes are uniformly formed in the bottom wall of the sliding groove in the second guide rail plate, the sliding block is pushed by a corresponding second electric push rod in the second guide rail plate, and the maximum telescopic size of the second electric push rod is at least 1/4 of the length of the groove in the transverse direction.

Furthermore, the rod body of the horizontal rod is symmetrically divided into three sections, a group of balls are uniformly embedded in the two sections of rod bodies of the horizontal rod outside the workbench, the third guide rail plate is longitudinally fixed on the ground, a third screw driven by a rotating motor to rotate is arranged inside the third guide rail plate, two external threads in opposite directions are symmetrically arranged on the rod bodies at the two ends of the third screw, and the bottoms of the two support rods on the same third guide rail plate are respectively provided with a second screw groove matched with the corresponding external threads; the projection of the water cutter head on the ground is on the symmetrical axis of the projection of the two horizontal rods on the ground; and conveying assemblies controlled by an external controller are arranged on the ground at the two transverse ends of the workbench.

Furthermore, the conveying assembly comprises a fourth guide rail plate transversely arranged on the ground, a suspension arm arranged on the fourth guide rail plate, a third electric push rod arranged at the tail end of the suspension arm and an electromagnet arranged at the tail end of the third electric push rod, the suspension arm is in an upper Greek letter 'gamma' shape, the end part of the free end of the third electric push rod faces downwards, a fourth screw rod is arranged in a sliding groove in the fourth guide rail plate and is driven to rotate by a corresponding conveying motor outside the fourth guide rail plate, and a third screw groove matched with the fourth screw rod penetrates through the bottom of the suspension arm.

Furthermore, the height of the suspension arm is larger than that of the first guide rail plate, and the projection of the electromagnet on the ground is on a symmetrical axis of the projection of the two horizontal rods on the ground.

Advantageous effects

Adopt the utility model provides a technical scheme compares with known public technique, has following beneficial effect:

1. the utility model discloses an increase workstation, the subassembly of polishing, drive assembly and supporting component, wherein the subassembly of polishing is including setting up at the first guide rail board at baffle top, the xarm that the activity erect on two first guide rail boards, set up at xarm middle part and export just down the water tool bit and set up on ground and lead to pipe in proper order with the force pump and the storage water tank that the water tool bit is connected, have the design of the mixed liquid that water and abrasive material constitute in advance in the storage water tank. The driving assembly drives the steel pipe on the supporting assembly to make self-rotating movement, then the pressure pump sprays the abrasive mixed liquid to the surface of the steel pipe through the water jet head, so that an oxide layer on the surface of the steel pipe is flushed by the abrasive mixed liquid flowing at a high speed, and the cross arm can make uniform transverse movement under the cooperation of the first motor and the first screw rod, so that the surface of the steel pipe is guaranteed to be comprehensively flushed and polished; compare in the mode that adopts grinding roller and steel pipe contact to polish in above-mentioned comparison file, the utility model discloses the product normal water tool bit can guarantee effectively that its pressure that sprays the mixed liquid of abrasive material on steel pipe surface is whole journey and equals. Reach and promote effectively the utility model discloses the product is to the effect of steel pipe burnishing and polishing ability.

2. The utility model discloses an increase workstation, the subassembly of polishing, drive assembly and supporting component, wherein the supporting component includes horizon bar, bracing piece, third guide rail board and rotating electrical machines, and the vertical symmetry in workstation top has erect two horizon bars, and the horizon bar tip all rotates to be connected at the bracing piece top that corresponds, and the equal swing joint in two bracing piece bottoms of same horizontal end is on same third guide rail board and by the design of the synchronous reverse motion of the rotating electrical machines drive that corresponds. Like this the user alright come to adjust the distance between two horizon bars through external control ware control rotating electrical machines to adapt to different radius size's steel pipe, the subassembly of polishing simultaneously adopts the principle of fluid scouring type burnishing and polishing, can make the utility model discloses the product can be well to different radius size's steel pipe burnishing and polishing. Reach and promote effectively the utility model discloses product application scope's effect.

3. The utility model discloses an increase workstation, the subassembly of polishing, drive assembly and supporting component, the inside sunken formula of workstation top is seted up flutedly, and the notch border at the vertical both ends of recess all is equipped with the baffle at the workstation, and the inside that the recess is close to its diapire department still is equipped with the grid tray that matches with it to the subassembly of polishing adopts the design of fluid to erode the formula burnishing and polishing principle. The piece that steel pipe surface oxide layer was washed away down can be wrapped up by the abrasive material mixed liquid and is concentrated to fall in the recess and discharge to appointed recovery unit from the drain pipe like this, consequently the utility model discloses the product just also does not have the indiscriminate problem of flying of piece in the in-service use process. Reach and promote effectively the utility model discloses the effect of product actual operation reliability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a visual diagram of the present invention at a first viewing angle;

fig. 2 is a visual diagram of the present invention at a second viewing angle;

fig. 3 is an exploded view of the present invention from a third perspective;

FIG. 4 is a schematic view of the workbench at a fourth viewing angle according to the present invention, after being partially cut away;

fig. 5 is an exploded view of the fifth viewing angle lower support assembly of the present invention;

fig. 6 is a visual diagram of the sixth viewing angle of the present invention when the support rod, the third guide rail plate and the third screw rod are separated;

fig. 7 is a partial exploded view of the driving assembly at a seventh viewing angle of the present invention;

fig. 8 is a partial exploded view of the sanding assembly at an eighth viewing angle of the present invention;

fig. 9 is an exploded view of the transfer assembly at a ninth viewing angle in accordance with the present invention;

FIG. 10 is a cross-sectional view of a portion of a transparent glass of the present invention;

fig. 11 is an illustrative view of the second guide rail plate after being partially cut away from the tenth view of the present invention;

the reference numerals in the drawings represent: 1-a workbench; 2-groove; 3, a baffle plate; 4-a first guide rail plate; 5-a cross arm; 6-a water cutter head; 7-a water pipe; 8-a pressure pump; 9-a water storage tank; 10-a second guide rail plate; 11-a slide block; 12-a first electric push rod; 13-rotating the seat; 14-a roller; 15-a belt; 16-a drive motor; 17-horizontal bar; 18-a support bar; 19-a third guide rail plate; 20-a rotating electrical machine; 21-supporting legs; 22-a drain pipe; 23-PVB film interlayer; 24-a hydrophobic membrane; 25-a first motor; 26-a first screw; 27-a first screw groove; 28-a grid; 29-water leakage holes; 30-a second electric push rod; 31-a ball; 32-a third screw; 33-a second screw groove; 34-a fourth guide rail plate; 35-a third electric push rod; 36-an electromagnet; 37-a fourth screw; 38-a transfer motor; 39-third thread groove; 40-a steel pipe; 41-transparent glass; 42-a boom.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solution in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

The sanding and polishing device for machining of the embodiment is as follows with reference to fig. 1 to 11: comprises a workbench 1, a grinding component, a driving component, a supporting component and a conveying component which are arranged on the workbench 1 and controlled by an external controller.

(one)

The top of the workbench 1 is provided with a concave groove 2 inwards.

In order to guarantee the utility model discloses the security of product in the actual motion in-process, also observe the working condition who polishes subassembly and drive assembly for the user's convenience simultaneously, consequently workstation 1 need all be equipped with baffle 3 at the notch border at the vertical both ends of recess 2, and all inlay the clear glass 41 that matches with it on the baffle 3, and the inside of clear glass 41 all is equipped with PVB film intermediate layer 23 (can avoid appearing clear glass 41 effectively like this and take place to explode and split and injure people or the condition of equipment), clear glass 41's inboard surface all is equipped with hydrophobic diaphragm 24 (can avoid clear glass 41 inboard surface to gather the water droplet like this effectively, thereby influence user's observation field of vision) (it is worth noting, hydrophobic diaphragm 24 adopts transparent plastic material to make in this embodiment).

Supporting legs 21 are arranged at the top corners of the bottom of the workbench 1, and a drain pipe 227 is further arranged at the bottom of the workbench 1, so that a user can discharge the abrasive mixed waste liquid in the grooves 2 and oxide layer chips on the surface of the steel pipe 40 into a specified recovery device through the drain pipe 227.

Because the mixed liquid scouring force of abrasive material is spouted to water tool bit 6 is very strong, because the mixed liquid of abrasive material that avoids water tool bit 6 to spout causes destruction to the diapire of recess 2, need still be equipped with grid plate 28 in recess 2 near the inside of its diapire department, can carry out effectual buffering through grid plate 28 to the mixed liquid of abrasive material that water tool bit 6 jetted like this.

(II)

The grinding assembly comprises first guide rail plates 4 arranged at the tops of the baffles 3, cross arms 5 movably erected on the two first guide rail plates 4, water cutter heads 6 arranged in the middle of the cross arms 5 and with downward outlets, and pressure pumps 8 and water storage tanks 9 which are arranged on the ground and are sequentially connected with the water cutter heads 6 through water pipes 7.

All be equipped with first motor 25 and the first screw rod 26 that matches with it on the first guide rail board 4, the tip of xarm 5 all runs through have with the first thread groove 27 that matches of corresponding first screw rod 26 to the stroke of xarm 5 on first guide rail board 4 is greater than recess 2 in the ascending length of transversely, can guarantee like this that water tool bit 6 can wash away the polishing to steel pipe 40 whole surface.

The water tank 9 is filled with a mixture of water and abrasive, and it is noted that the water is a special compound (polymer-like substance) having a good flow-through property under a relatively low pressure.

It is worth noting because the utility model discloses the principle that the product carried out burnishing and polishing to the work piece is the same with the principle of cutting the work piece, consequently in order to avoid the utility model discloses water tool bit 6 in the product is to the cutting wound that causes of steel pipe 40's surface, just need reduce the utility model discloses the pressure size of the mixed liquid of water tool bit 6 injection department abrasive material in the product.

Compared with a traditional hard contact type grinding means (for example, the grinding roller is in contact with the steel pipe 40), the grinding component has the advantages that the grinding effect is good (because the water cutter head 6 can ensure that the pressure of the abrasive mixed liquid sprayed on the surface of the steel pipe 40 is equal in the whole process), the damage is small (because the abrasive mixed liquid carries out the grinding and polishing on the surface of the steel pipe 40, the abrasive mixed liquid can also take away heat generated on the surface of the steel pipe 40 in the process, and therefore the situation that the steel pipe 40 is slightly deformed due to the influence of temperature rise in the grinding and polishing process) and the pollution is small (because the fragments of the oxide layer on the surface of the steel pipe 40 can be wrapped by the abrasive and then fall into the groove 2 in a concentrated mode, and the situation that the fragments are scattered is avoided).

In addition, in order to ensure that the abrasive mixed liquid sprayed by the water jet head 6 can be directed to the surface of the steel pipe 40, the projection of the water jet head 6 on the ground is required to be on the symmetrical axis of the projection of the two horizontal rods 17 on the ground.

(III)

The driving assembly comprises second guide rail plates 10 symmetrically arranged on the inner side walls of the two longitudinal ends of the groove 2, a sliding block 11 arranged on the second guide rail plates 10, a first electric push rod 12 vertically arranged at the top of the sliding block 11, a rotating seat 13 arranged at the top of the first electric push rod 12 and rollers 14 arranged on the rotating seat 13, the two rollers 14 are in transmission connection through a belt 15, and a driving motor 16 for driving the rollers 14 on any one rotating seat 13 is arranged.

In the present embodiment, the belt 15 is made of a rubber material because the belt 15 made of a rubber material has not only wear resistance but also excellent anti-slip properties.

A group of water leakage holes 29 are uniformly formed in the bottom wall of the sliding groove of the second guide rail plate 10, so that accumulated water in the sliding groove of the second guide rail plate 10 can be effectively and timely discharged.

The sliding block 11 is pushed by a corresponding second electric push rod 30 on the second guide rail plate 10, and in the present embodiment, the maximum telescopic size of the second electric push rod 30 is 1/4 of the length of the groove 2 in the transverse direction; this is because in order to ensure that the water jet head 6 can all polish the whole section of the surface of the steel pipe 40 with the brushing type, and the water jet head 6 does not damage the belt 15, it is necessary that the water jet head first polish a part of the pipe body of the steel pipe 40 (at this time, the belt 15 drives the other part of the pipe body of the steel pipe 40), then the water jet head 6 stops spraying, then the first electric push rod 12 extends, then the second electric push rod 30 extends, then the first electric push rod 12 contracts, so that the lower surface of the belt 15 is pressed on the steel pipe 40 and the polished surface, and the steel pipe 40 is driven to rotate, and meanwhile, the water jet head 6 polishes and polishes the surface of the remaining non-polished barrel of the steel pipe 40 with the water jet head 6

It is worth noting that the driving assembly is used for driving the steel pipe 40 on the horizontal rod 17 to perform self-rotation (i.e. the first electric push rod 12 contracts, so that the lower surface of the belt 15 is pressed on the surface of the steel pipe 40), and the abrasive mixed liquid sprayed by the water cutter head 6 can perform washing, grinding and polishing on the whole circumferential surface of the steel pipe 40.

(IV)

The supporting component comprises horizontal rods 17, supporting rods 18, a third guide rail plate 19 and a rotating motor 20, wherein the two horizontal rods 17 are longitudinally and symmetrically erected at the top of the workbench 1, the end parts of the horizontal rods 17 are rotatably connected to the tops of the corresponding supporting rods 18, the bottoms of the two supporting rods 18 at the same transverse end are movably connected to the same third guide rail plate 19 and driven by the corresponding rotating motor 20 to synchronously and reversely move (the specific implementation principle is that the third guide rail plate 19 is longitudinally fixed on the ground, a third screw 32 driven by the rotating motor 20 to rotate is arranged in the third guide rail plate 19, two external threads in opposite directions are symmetrically arranged on rod bodies at two ends of the third screw 32, and second screw grooves 33 matched with the corresponding external threads are respectively arranged at the bottoms of the two supporting rods 18 on the same third guide rail plate 19).

The rod body of the horizontal rod 17 is symmetrically divided into three sections, and a group of balls 31 are uniformly embedded in the two sections of the rod body of the horizontal rod 17, which are positioned outside the workbench 1, so that the smooth movement of the steel pipe 40 on the rod bodies at the two ends outside the horizontal rod 17 can be facilitated.

(V)

The ground at the two transverse ends of the workbench 1 is provided with a conveying assembly controlled by an external controller.

The conveying assembly comprises a fourth guide rail plate 34 transversely arranged on the ground, a suspension arm 42 arranged on the fourth guide rail plate 34, a third electric push rod 35 arranged at the tail end of the suspension arm 42 and an electromagnet 36 arranged at the tail end of the third electric push rod 35, wherein the suspension arm 42 is of a type of Greek letter 'T', the free end of the third electric push rod 35 faces downwards, a fourth screw rod 37 is arranged in a sliding groove in the fourth guide rail plate 34, the fourth screw rod 37 is driven to rotate by a corresponding conveying motor 38 outside the fourth guide rail plate 34, and a third screw groove 39 matched with the fourth screw rod 37 penetrates through the bottom of the suspension arm 42.

In addition, in order to ensure that the suspension arm 42 is not hindered by the baffle 3 during the movement of the suspension arm 42 in the transverse direction and the electromagnet 36 can well adsorb and pull the steel pipes 40 on the two horizontal rods 17, the height of the suspension arm 42 is required to be larger than that of the first guide rail plate 4, and the projection of the electromagnet 36 on the ground is on the symmetrical axis of the projection of the two horizontal rods 17 on the ground.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a burnishing and polishing device for machining which characterized in that: comprises a workbench, a grinding component, a driving component and a supporting component, wherein the grinding component, the driving component and the supporting component are arranged on the workbench and controlled by an external controller;

the top of the workbench is provided with a groove in an inward concave mode, and the edges of the notches at the two longitudinal ends of the groove of the workbench are provided with baffles;

the polishing assembly comprises first guide rail plates arranged at the tops of the baffles, a cross arm movably erected on the two first guide rail plates, a water cutter head arranged in the middle of the cross arm and with an outlet facing downwards, and a pressure pump and a water storage tank which are arranged on the ground and are sequentially connected with the water cutter head through a water pipe;

the driving assembly comprises second guide rail plates symmetrically arranged on the inner side walls of the longitudinal two ends of the groove, a sliding block arranged on the second guide rail plates, a first electric push rod vertically arranged at the top of the sliding block, a rotating seat arranged at the top of the first electric push rod and rollers arranged on the rotating seat, the two rollers are in transmission connection through a belt, and a driving motor for driving the rollers on any one of the rotating seats is arranged on the rotating seat;

the supporting component comprises horizontal rods, supporting rods, third guide rail plates and a rotating motor, two horizontal rods are erected in the longitudinal symmetry of the top of the workbench, the end parts of the horizontal rods are connected to the tops of the corresponding supporting rods in a rotating mode, and the bottoms of the two supporting rods at the same transverse end are movably connected to the same third guide rail plate and driven by the corresponding rotating motor to move in the opposite direction.

2. The grinding and polishing device for machining according to claim 1, wherein supporting legs are arranged at the top corners of the bottom of the workbench, and a drain pipe is further arranged at the bottom of the workbench.

3. A grinding and polishing device for machining according to claim 1, wherein the baffle is embedded with transparent glass.

4. The grinding and polishing device for machining according to claim 3, wherein the transparent glass is internally provided with a PVB film interlayer, and the inner side surface of the transparent glass is provided with a hydrophobic membrane.

5. A grinding and polishing device for machining according to claim 1, wherein the first guide rail plates are each provided with a first motor and a first screw rod which are matched with the first motor, the end portions of the cross arms each have a first screw groove which is matched with the corresponding first screw rod, and the travel of the cross arms on the first guide rail plates is longer than the length of the grooves in the transverse direction.

6. The apparatus as claimed in claim 1, wherein the water tank is pre-filled with a mixture of water and abrasive.

7. A grinding and polishing device for machining according to claim 1, wherein a grid plate matched with the groove is further arranged inside the groove close to the bottom wall of the groove, a group of water leakage holes are uniformly formed in the bottom wall of the sliding groove of the second guide rail plate, the sliding block is pushed by a corresponding second electric push rod on the second guide rail plate, and the maximum telescopic size of the second electric push rod is at least 1/4 of the length of the groove in the transverse direction.

8. The grinding and polishing device for machining according to claim 1, wherein the rod body of the horizontal rod is symmetrically divided into three sections, a group of balls are uniformly embedded in the two sections of rod bodies of the horizontal rod outside the workbench, the third guide rail plate is longitudinally fixed on the ground, a third screw driven by a rotating motor to rotate is arranged inside the third guide rail plate, two external threads in opposite directions are symmetrically arranged on the rod bodies at two ends of the third screw, and the bottoms of the two support rods on the same third guide rail plate are respectively provided with a second thread groove matched with the corresponding external threads; the projection of the water cutter head on the ground is on the symmetrical axis of the projection of the two horizontal rods on the ground; conveying assemblies controlled by an external controller are arranged on the ground at the two transverse ends of the workbench.

9. A grinding and polishing device for machining according to claim 8, characterized in that the conveying assembly comprises a fourth guide rail plate transversely arranged on the ground, a suspension arm arranged on the fourth guide rail plate, a third electric push rod arranged at the tail end of the suspension arm, and an electromagnet arranged at the tail end of the third electric push rod, the suspension arm is in a shape of the capital Greek letter 'gamma', the free end of the third electric push rod faces downwards, a fourth screw rod is arranged in a sliding groove in the fourth guide rail plate and is driven to rotate by a corresponding conveying motor outside the fourth guide rail plate, and a third screw groove matched with the fourth screw rod penetrates through the bottom of the suspension arm.

10. A sanding and polishing device for machining according to claim 9 characterized in that the height of the boom is greater than the height of the first rail plate and the projection of the electromagnet on the ground is on the symmetry axis of the projection of the two horizontal bars on the ground.

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