CN118559430A - Multifunctional compound machine tool - Google Patents

Abstract

The invention relates to the technical field of machine tools, in particular to a multifunctional compound machine tool which comprises a machine body, wherein a clamping device and a polishing device are correspondingly arranged on the machine body, a drilling device is arranged between the clamping device and the polishing device, the polishing device comprises a base, a supporting plate is fixedly arranged on the base, a transverse shaft is fixedly arranged on the supporting plate, one end of the transverse shaft, which is close to the clamping device, is sleeved with a toothed ring, the toothed ring is in transmission connection with a driver, and a plurality of polishers are fixedly arranged on the outer side surface of the toothed ring along the circumferential direction. According to the invention, the polishing device is arranged on the lathe bed, so that the inner wall of the radial hole and the outer wall of the workpiece can be polished quickly after the radial hole is machined, and the machining effect is good and the machining speed is high.

Description

A multifunctional composite machine tool

Technical Field

The invention relates to the technical field of machine tools, and in particular to a multifunctional compound machine tool.

Background Art

After the composite machine tool is clamped once, it processes multiple surfaces and multiple elements of the workpiece through the rotation and displacement of the machine tool spindle. The positioning error caused by the re-installation and positioning of the workpiece is eliminated in one clamping, ensuring the processing accuracy. The reduction of processes facilitates manufacturing and organizational management. Since the composite machine tool itself is a high-precision machine tool, it can directly achieve high-precision machining, eliminating some of the mutual reference sequence machining from rough machining to fine machining of traditional machine tools, and eliminating some rough machining procedures. The simplification of the process can also reduce a lot of machine tool preparation, process equipment, measuring and inspection tools, operator and inspection management personnel preparation, etc., which is convenient for the organization and management of the processing site.

When using existing machine tools to process radial holes on tubular workpieces, when facing some tubular workpieces with thicker walls, the depth of the radial holes is large after drilling. Therefore, it is necessary to remove the workpiece after processing the radial holes and re-clamp it on another machine tool specially used for grinding and polishing the radial holes. If the machine tool is not provided with a device for grinding the surface of the tubular workpiece, it is necessary to remove the workpiece again and use another machine tool to grind the surface of the tubular workpiece again. This processing method requires the use of three machine tools to complete the radial hole processing, radial hole inner wall grinding and polishing, and outer surface grinding of the tubular workpiece. The workpiece needs to be clamped multiple times during the entire operation, which is very time-consuming. After grinding and polishing the radial holes, the radial holes need to be repositioned so that the grinder on the machine tool can accurately enter the radial holes. Inaccurate positioning can easily result in poor grinding effects. For this reason, it is necessary to design a multifunctional composite machine tool to complete the radial hole processing and grinding and polishing processes of the tubular workpiece at one time.

Summary of the invention

The purpose of the present invention is to solve the disadvantage in the prior art that multiple machine tools need to be used to operate radial holes in tubular workpieces, and to propose a multifunctional composite machine tool.

In order to achieve the above object, the present invention adopts the following technical solutions:

A multifunctional composite machine tool is designed, comprising a bed, on which a clamping device and a grinding device are correspondingly arranged, a drilling device is arranged between the clamping device and the grinding device, the grinding device comprises a base, the base can be slidably mounted on the bed along the length direction of the bed, a support plate is fixedly mounted on the base, a transverse axis is fixedly mounted on the support plate, a gear ring is sleeved on one end of the transverse axis close to the clamping device, the gear ring is coaxially rotatably connected to the transverse axis, the gear ring is transmission-connected to a driver, the driver is used to drive the gear ring to rotate, and a plurality of grinders are fixedly mounted on the outer side surface of the gear ring along the circumferential direction.

Preferably, a bracket is fixedly installed at one end of the horizontal axis close to the clamping device, a rotating cylinder is rotatably installed on the bracket, the rotating cylinder is radially arranged parallel to the gear ring, the bottom end of the rotating cylinder is sealed, a telescopic rod is coaxially and telescopically installed in the rotating cylinder, a grinding head is coaxially and fixedly installed on the top of the telescopic rod, the telescopic rod is transmission-connected with a driving module, and the driving module is used to drive the telescopic rod to perform telescopic movement in the rotating cylinder.

Preferably, the driving module comprises a piston, a piston is fixedly mounted at the bottom end of the telescopic rod, a rotating body is coaxially fixedly mounted on the upper surface of the grinding head, the rotating body is cylindrical, an inner cavity is formed in the rotating body, an oblique hole connected to the inner cavity is formed on the surface of the rotating body along the circumferential direction, a connecting channel is coaxially formed on the whole consisting of the telescopic rod and the piston, and the connecting channel is used to connect the inner cavity with the inside of the rotating cylinder;

A communicating vessel is coaxially and rotatably mounted on the rotating cylinder below the piston, and the communicating vessel is connected to the inside of the rotating cylinder. Two first connecting pipes are arranged on the communicating vessel, and a water inlet pipe and a water outlet pipe are respectively arranged on both sides below the rotating cylinder, and the water inlet pipe and the water outlet pipe are both fixed on the horizontal axis, and the water inlet pipe and the water outlet pipe are arranged in parallel, and a plunger is coaxially and telescopically mounted in the water inlet pipe and the water outlet pipe, and the two plungers are fixedly connected, and a second connecting pipe is arranged on the surface of the water inlet pipe and the water outlet pipe, and the two second connecting pipes are connected to the two first connecting pipes one by one, and the water inlet pipe is connected to a cutting fluid supply module.

Preferably, a rack is provided between the two plungers, the rack is arranged parallel to the plungers, the two ends of the rack are respectively fixedly connected to the two plungers, a transmission gear is coaxially fixed to the bottom end of the rotating cylinder, the transmission gear is meshed with the rack, and the portion of the rack close to the water inlet pipe side is subjected to tooth cutting treatment.

Preferably, the cutting fluid supply module includes an infusion channel and a docking block. An infusion channel corresponding to the water inlet pipe is opened in the horizontal axis, and the infusion channel is connected to the water inlet pipe. A through hole connected to the infusion channel is opened on the surface of the horizontal axis. A docking block coinciding with the movement trajectory of the through hole is fitted on the surface of the horizontal axis. A docking groove is opened on the inner surface of the docking block. An infusion tube connected to the docking groove is arranged on the docking block. The infusion tube is used to connect the cutting fluid supply device, and the docking block is fixedly connected to the gear ring.

Preferably, the grinding head comprises a grinding body, the grinding body is cylindrical, and a plurality of steel wire bundles are fixed on the surface of the grinding body along the circumferential direction.

Preferably, the grinder comprises a fixed plate and a grinding strip, the fixed plate is arranged parallel to the central axis of the gear ring, and the grinding strip is installed on the inner surface of the fixed plate.

The multifunctional composite machine tool proposed by the present invention has the following beneficial effects:

By arranging a grinding device on the machine tool, when performing radial hole drilling processing, the grinding head in the grinding device can be coaxially distributed with the radial hole position, so that after the drilling is completed, the grinding head can be directly operated to extend into the radial hole for grinding, the positioning is more accurate, and the polishing effect is better. At the same time, the grinding device can grind and polish the surface of the workpiece through multiple grinders that can perform circular motion arranged thereon, realizing the integration of multiple processes;

In addition, in the grinding device, the vertical extension and rotation of the grinding head can be driven by the pressure of the liquid injected into the cutting fluid supply device. With the use of cutting fluid, better grinding and polishing effects can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a multifunctional composite machine tool proposed by the present invention;

FIG2 is a schematic structural diagram of a grinding device of a multifunctional composite machine tool proposed by the present invention;

FIG3 is a second structural schematic diagram of a grinding device of a multifunctional composite machine tool proposed by the present invention;

FIG4 is a schematic diagram of the position of a rotating drum of a multifunctional composite machine tool proposed by the present invention;

FIG5 is a schematic diagram of the positions of through holes of a multifunctional composite machine tool proposed by the present invention;

FIG6 is a schematic diagram of the structure of a second drive module of a multifunctional compound machine tool proposed by the present invention;

FIG7 is a schematic diagram of the internal structure of a rotating drum of a multifunctional composite machine tool proposed by the present invention;

FIG8 is a schematic diagram of the internal structure of a rotating body of a multifunctional composite machine tool proposed by the present invention;

FIG9 is a schematic diagram of the structure of a cutting fluid supply module for a multifunctional composite machine tool proposed by the present invention;

FIG10 is a schematic diagram of the position of an infusion channel of a multifunctional composite machine tool proposed by the present invention;

FIG11 is a first schematic diagram of a working state of a second driving module of a multifunctional composite machine tool provided by the present invention;

FIG12 is a second schematic diagram of the working state of the second drive module of a multifunctional composite machine tool proposed by the present invention;

FIG. 13 is a schematic diagram showing the working principle of a multifunctional composite machine tool proposed by the present invention.

In the figure: 1. bed; 2. clamping device; 3. drilling device; 4. grinding device; 41. base; 42. horizontal axis; 43. gear ring; 44. driver; 45. grinder; 46. rotating cylinder; 47. telescopic rod; 48. grinding head; 49. rotating body; 410. piston; 411. connecting channel; 412. inner cavity; 413. oblique hole; 414. communicating vessel; 415. first connecting pipe; 416. transmission gear; 417. water inlet pipe; 418. water outlet pipe; 419. second connecting pipe; 420. plunger; 421. rack; 422. infusion channel; 423. through hole; 424. docking block; 425. infusion tube.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

Embodiment 1: Referring to Fig. 1 to Fig. 5 and Fig. 13, a multifunctional composite machine tool comprises a bed 1, a clamping device 2 and a grinding device 4 are correspondingly arranged on the bed 1, a drilling device 3 is arranged between the clamping device 2 and the grinding device 4, and the grinding device 4 comprises a base 41, the base 41 can be slidably mounted on the bed 1 along the length direction of the bed 1, a support plate is fixedly mounted on the base 41, a horizontal axis 42 is fixedly mounted on the support plate, the horizontal axis 42 is arranged parallel to the length direction of the bed 1, a gear ring 43 is sleeved on one end of the horizontal axis 42 near the clamping device 2, the gear ring 43 is coaxially rotatably connected to the horizontal axis 42, the gear ring 43 is transmission-connected with a driver 44, the driver 44 comprises a motor and a driving gear, the motor is fixed on the support plate, and a driving gear meshing with the gear ring 43 is coaxially fixed on the output shaft of the motor. The driver 44 is used to drive the gear ring 43 to rotate, and a plurality of grinders 45 are fixedly mounted on the outer side of the gear ring 43 along the circumferential direction.

A bracket is fixedly installed on one end of the horizontal axis 42 close to the clamping device 2, and a rotating cylinder 46 is rotatably installed on the bracket. The rotating cylinder 46 is radially arranged parallel to the gear ring 43, and the bottom end of the rotating cylinder 46 is sealed. A telescopic rod 47 is coaxially and telescopically installed in the rotating cylinder 46, and a grinding head 48 is coaxially and fixedly installed on the top of the telescopic rod 47. The telescopic rod 47 is transmission-connected to a driving module, and the driving module is used to drive the telescopic rod 47 to perform telescopic movement in the rotating cylinder 46, so that the telescopic rod 47 can drive the grinding head 48 to enter the radial hole of the workpiece for grinding.

The driving module includes a piston 410, a piston 410 is fixedly installed at the bottom of the telescopic rod 47, and a rotating body 49 is coaxially fixedly installed on the upper surface of the grinding head 48. The rotating body 49 is cylindrical, and an inner cavity 412 is opened in the rotating body 49. An oblique hole 413 connected to the inner cavity 412 is opened on the surface of the rotating body 49 along the circumferential direction. The central axis of the oblique hole 413 is inclined relative to the radial direction of the rotating body 49. A connecting channel 411 is coaxially opened on the whole composed of the telescopic rod 47 and the piston 410. The connecting channel 411 is used to connect the inner cavity 412 with the inside of the rotating cylinder 46; on the one hand, the pressure of the injected cutting fluid is used to push the piston 410 and the telescopic rod 47 to move, so that the telescopic rod 47 can drive the grinding head 48 to extend into the radial hole. On the other hand, when the cutting fluid is ejected from the rotating body 49, the reaction force generated will drive the rotating body 49 and the grinding head 48 to rotate.

A communicating vessel 414 is coaxially and rotatably mounted on the rotating cylinder 46 below the piston 410. The communicating vessel 414 is connected to the inside of the rotating cylinder 46. Two first connecting pipes 415 are arranged on the communicating vessel 414. A water inlet pipe 417 and a water outlet pipe 418 are respectively arranged on both sides below the rotating cylinder 46. The water inlet pipe 417 and the water outlet pipe 418 are both fixed on the horizontal axis 42. The water inlet pipe 417 and the water outlet pipe 418 are arranged in parallel. A plunger 420 is coaxially and telescopically mounted in the water inlet pipe 417 and the water outlet pipe 418. The two plungers 420 are fixedly connected. A second connecting pipe 419 is arranged on the surface of the water inlet pipe 417 and the water outlet pipe 418. The two second connecting pipes 419 are connected to the two first connecting pipes 415 one-to-one. The water inlet pipe 417 is connected to a cutting fluid supply module.

As shown in Figures 11-12, there are two working states between the two plungers 420. The first working state is: the plunger 420 in the water inlet pipe 417 moves outward so that the plunger 420 inside it does not block the second connecting pipe 419 on the water inlet pipe 417, and the plunger 420 in the water outlet pipe 418 moves inward so that the plunger 420 inside it blocks the second connecting pipe 419 on the water outlet pipe 418; the second working state is: the plunger 420 in the water inlet pipe 417 moves inward so that the plunger 420 inside it blocks the second connecting pipe 419 on the water inlet pipe 417, and the plunger 420 in the water outlet pipe 418 moves outward so that the plunger 420 inside it does not block the second connecting pipe 419 on the water outlet pipe 418.

The cutting fluid supply module includes an infusion channel 422 and a docking block 424. The infusion channel 422 corresponding to the water inlet pipe 417 is opened in the horizontal axis 42, and the infusion channel 422 is connected to the water inlet pipe 417. The surface of the horizontal axis 42 is opened with a through hole 423 connected to the infusion channel 422. The surface of the horizontal axis 42 is fitted with a docking block 424 that coincides with the movement trajectory of the through hole 423. The inner surface of the docking block 424 is opened with a docking groove. The docking block 424 is provided with an infusion tube 425 connected to the docking groove. The infusion tube 425 is used to connect the cutting fluid supply device, and the docking block 424 is fixedly connected to the gear ring. The cutting fluid supply module can automatically realize the intermittent supply of cutting fluid by means of the intermittent alignment between the docking block 424 and the through hole 423, so that the extension and retraction of the telescopic rod 47 can be controlled.

The grinding head 48 includes a grinding body, which is cylindrical, and a plurality of steel wire bundles are fixed on the surface of the grinding body along the circumferential direction. When the grinding body rotates, the steel wire bundles on the surface of the grinding body can grind and polish the inner wall of the radial hole.

The grinder 45 includes a fixed plate and a grinding strip, wherein the fixed plate is arranged parallel to the central axis of the gear ring 43, and a grinding strip is installed on the inner surface of the fixed plate. The grinding strip can be replaced, and the grinding head 48 can be installed in a retractable manner, so that when the grinding strip is worn, the grinding head 48 is extended inward to fill the gap between it and the workpiece.

Embodiment 2: Referring to FIG. 6 to FIG. 12, as another preferred embodiment of the present invention, the difference from Embodiment 1 is that a rack 421 is further provided between the two plungers 420, the rack 421 is provided parallel to the plungers 420, and the two ends of the rack 421 are respectively fixedly connected to the two plungers 420, a transmission gear 416 is coaxially fixed to the bottom end of the rotating cylinder 46, the transmission gear 416 is meshed with the rack 421, and the portion of the rack 421 close to the water inlet pipe 417 is processed with cutting teeth. When the plunger 420 in the water outlet pipe 418 pushes the rack 421 outward to the maximum distance, the rack 421 and the transmission gear 416 are in a non-meshing state, so that the rack 421 will not hinder the continued rotation of the transmission gear 416 after it stops moving. Since the liquid pressure injected into the rotating cylinder 46 may not allow the grinding head 48 to rotate quickly, by providing the rack 421, on the one hand, it can be used to realize the linkage between the two plungers 420, and on the other hand, it can also provide a rotational drive to the rotating cylinder 46 through the driving gear, so that the rotating cylinder 46 can drive the grinding head 48 to obtain a higher initial rotation speed.

The overall workflow of the present invention is as follows:

The tubular workpiece to be processed is fixed by the clamping device 2. The fixed tubular workpiece is arranged parallel to the length direction of the bed 1. At this time, the operator moves the grinding device 4 along the length direction of the bed 1 to align the grinding device 4 with the tubular workpiece. The aligned grinding device 4 is shown in FIG. 13. A plurality of grinders 45 are distributed in an annular shape on the outer surface of the tubular workpiece, and the grinders 45 keep in contact with the surface of the tubular workpiece, and the rotating cylinder 46 is arranged parallel to the radial direction of the tubular workpiece.

Then the operator controls the drill bit of the drilling device 3 to align with the rotating cylinder 46, and then starts the drilling device 3 to drill. The drilled radial hole is coaxially distributed with the rotating cylinder 46. After the drilling is completed, the drilling device 3 is reset, and then the operator starts the driver 44. The driver 44 drives the gear ring 43 to reciprocate. The gear ring 43 drives a plurality of grinders 45 to reciprocate around the tubular workpiece. In this process, the grinders 45 grind the surface of the tubular workpiece.

At the same time, the gear ring 43 synchronously drives the docking block 424 thereon to make a reciprocating circular motion on the surface of the horizontal shaft 42. Whenever the docking block 424 is aligned with the through hole 423 on the surface of the horizontal shaft 42, the cutting fluid supply device injects the cutting fluid into the through hole 423 through the infusion pipe 425, the docking groove, and the through hole 423 at a certain pressure, and then the cutting fluid enters the infusion channel 422, and then enters the water inlet pipe 417 through the infusion channel 422. As shown in FIG. 11, the cutting fluid after entering the water inlet pipe 417 will flow into the water inlet pipe 417. The plunger 420 in 17 is pushed outward quickly, so that the rack 421 connected to the plunger 420 moves quickly, and the rack 421 drives the driving gear meshing with it to rotate quickly, and the driving gear drives the rotating cylinder 46 connected with it to rotate quickly, and the rotating cylinder 46 drives the piston 410, the telescopic rod 47, and the grinding head 48 to rotate quickly, so that the grinding head 48 can obtain a higher initial rotation speed to make up for the disadvantage of the slow rotation speed of the grinding head 48 driven by liquid pressure alone;

The rack 421 also drives another plunger 420 to retract the water outlet pipe 418. During this process, the plunger 420 on the water inlet pipe 417 will pass over the second connecting pipe 419 thereon, and the plunger 420 on the water outlet pipe 418 will block the other second connecting pipe 419 thereon. The cutting fluid in the water outlet pipe 418 is input into the corresponding first connecting pipe 415 through the second connecting pipe 419 thereon, and then input into the communicating vessel 414 through the first connecting pipe 415, and finally enters the interior of the rotating cylinder 46 connected to the communicating vessel 414. After the cutting fluid is injected into the rotating cylinder 46, the piston 410 in the rotating cylinder 46 will be pushed up, and the piston 410 drives the telescopic rod 47 to push the punch. The grinding head 48 moves upward until the grinding head 48 extends into the radial hole of the tubular workpiece, and part of the cutting fluid enters the inner cavity 412 of the rotating body 49 through the connecting channel 411 on the piston 410 and the telescopic rod 47, and is discharged through a plurality of oblique holes 413 on the rotating body 49. Since the oblique holes 413 are arranged obliquely, the rotating body 49 is subjected to the reaction force of the sprayed liquid, and the rotating body 49 drives the grinding head 48 to rotate, and the rotating grinding head 48 can better grind the inner wall of the radial hole; at the same time, the grinding head 48 can also extend out of the radial hole during the rising process, so as to spray the cutting fluid onto the surrounding surface of the tubular workpiece, so that the grinder 45 can be lubricated by the cutting fluid;

When the docking block 424 is offset from the through hole 423 on the horizontal axis 42, the through hole 423 is not blocked, as shown in FIG12, the liquid in the infusion channel 422 flows out, and the liquid in the water inlet pipe 417 loses pressure, so that the plunger 420 in the water inlet pipe 417 is reset. After the plunger 420 is reset, the first connecting pipe 415 on the water inlet pipe 417 is blocked, and correspondingly, the plunger 420 in the water outlet pipe 418 is also reset, thereby connecting the second connecting pipe 419 on the water outlet pipe 418, so that the liquid in the rotating cylinder 46 is discharged through the water outlet pipe 418 at this time. After the liquid in the rotating cylinder 46 is discharged, the internal piston 410 will also drive the piston 410 rod to automatically reset downward, thereby driving the grinding head 48 to reset downward.

The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (7)

1. The utility model provides a multifunctional compound lathe, includes lathe bed (1), be provided with clamping device (2) and grinding device (4) on lathe bed (1) correspondence, be provided with drilling equipment (3) between clamping device (2) and grinding device (4), a serial communication port, grinding device (4) include base (41), base (41) can follow lathe bed (1) length direction slidable mounting on lathe bed (1), fixed mounting has the backup pad on base (41), fixed mounting has cross axle (42) in the backup pad, cross axle (42) are close to clamping device (2) one end cover and are equipped with toothed ring (43), toothed ring (43) are connected with coaxial rotatable of cross axle (42), toothed ring (43) transmission is connected with driver (44), driver (44) are used for driving toothed ring (43) rotation, toothed ring (43) lateral surface is along circumference fixed mounting has a plurality of sanders (45).

2. The multifunctional compound machine tool according to claim 1, wherein a bracket is fixedly arranged at one end of the transverse shaft (42) close to the clamping device (2), a rotary cylinder (46) is rotatably arranged on the bracket, the rotary cylinder (46) is radially arranged parallel to the toothed ring (43), the bottom end of the rotary cylinder (46) is in sealing arrangement, a telescopic rod (47) is coaxially and telescopically arranged in the rotary cylinder (46), a polishing head (48) is coaxially and fixedly arranged at the top end of the telescopic rod (47), and a driving module is in transmission connection with the telescopic rod (47) and is used for driving the telescopic rod (47) to do telescopic motion in the rotary cylinder (46).

3. The multifunctional compound machine tool according to claim 2, wherein the driving module comprises a piston (410), a piston (410) is fixedly arranged at the bottom end of the telescopic rod (47), a rotary body (49) is coaxially and fixedly arranged on the upper surface of the polishing head (48), the rotary body (49) is cylindrical, an inner cavity (412) is formed in the rotary body (49), an inclined hole (413) communicated with the inner cavity (412) is formed in the surface of the rotary body (49) along the circumferential direction, a connecting channel (411) is coaxially formed in the whole body formed by the telescopic rod (47) and the piston (410), and the connecting channel (411) is used for connecting the inner cavity (412) and the inside of the rotary cylinder (46);

The rotary cylinder (46) below the piston (410) is coaxially and rotatably provided with a communicating vessel (414), the communicating vessel (414) is communicated with the inside of the rotary cylinder (46), two first connecting pipes (415) are arranged on the communicating vessel (414), water inlet pipes (417) and water outlet pipes (418) are respectively arranged on two sides below the rotary cylinder (46), the water inlet pipes (417) and the water outlet pipes (418) are fixed on a transverse shaft (42), the water inlet pipes (417) and the water outlet pipes (418) are arranged in parallel, a plunger (420) is coaxially and telescopically arranged in each of the water inlet pipes (417) and the water outlet pipes (418), two plungers (420) are fixedly connected, a second connecting pipe (419) is arranged on the surfaces of each of the water inlet pipes (417) and the water outlet pipes (418), the two second connecting pipes (419) are connected with the two first connecting pipes (415) in a one-to-one mode, and the water inlet pipes (417) are connected with a cutting fluid supply module.

4. A multifunctional compound machine tool according to claim 3, characterized in that a rack (421) is further arranged between the two plungers (420), the rack (421) is parallel to the plungers (420), two ends of the rack (421) are fixedly connected with the two plungers (420) respectively, a transmission gear (416) is coaxially fixed at the bottom end of the rotary cylinder (46), the transmission gear (416) is meshed with the rack (421), and a part, close to the water inlet pipe (417), of the rack (421) is subjected to gear cutting treatment.

5. The multifunctional compound machine tool according to claim 3, wherein the cutting fluid supply module comprises an infusion channel (422) and a butt joint block (424), the infusion channel (422) corresponding to the water inlet pipe (417) is arranged in the transverse shaft (42), the infusion channel (422) is communicated with the water inlet pipe (417), a through hole (423) communicated with the infusion channel (422) is formed in the surface of the transverse shaft (42), the butt joint block (424) overlapped with the movement track of the through hole (423) is arranged on the surface of the transverse shaft (42) in a laminating mode, a butt joint groove is formed in the inner surface of the butt joint block (424), an infusion tube (425) communicated with the butt joint groove is arranged on the butt joint block (424), the infusion tube (425) is used for being connected with the cutting fluid supply device, and the butt joint block (424) is fixedly connected with the toothed ring (43).

6. The multifunctional compound machine tool according to claim 2, characterized in that the grinding head (48) comprises a grinding body, the grinding body is cylindrical, and a plurality of steel wire bundles are fixed on the surface of the grinding body along the circumferential direction.

7. The multifunctional compound machine tool according to claim 1, characterized in that the sander (45) comprises a fixed plate, sanding strips, the fixed plate being arranged parallel to the central axis of the toothed ring (43), the fixed plate being mounted with sanding strips on its inner side surface.