Vertical feeding type machine tool facilitating chip removal

Abstract

The utility model discloses a vertical feeding type machine tool convenient for chip removal, which comprises a base, a rack, a cutter driving motor, a main shaft, a cutter, a workpiece mounting plate, a workpiece moving device, a chip conveying screw and a chip conveying motor, a rotating shaft of the cutter driving motor is connected with the main shaft through a transmission device, and the cutter is arranged on the upper part of the main shaft; the workpiece mounting plate is mounted on the lower portion of the workpiece moving device, the cutter is located below the workpiece mounting plate, the chipping conveying motor is mounted on the base and located below the spindle, and the chipping conveying screw is connected with a rotating shaft of the chipping conveying motor. When the cutter is used for machining, generated chips cannot be deposited in a machining position, the chip removal capacity is remarkably improved, the chips are timely discharged out of the base through the chip conveying screw, the problem that the chips are difficult to remove is thoroughly solved, the machining efficiency is improved, and the machining cost is reduced. And when workpieces made of different materials are machined, programming control of different rotating speeds and feeding amounts can be adjusted at will according to needs.

Description

Technical Field

[0001] The utility model relates to a numerical control machine tool mainly used for hole machining, in particular to a vertical feed type machine tool convenient for chip removal. Background Art

[0002] Numerical control machine tools are mainly divided into horizontal feed type machine tools and vertical feed type machine tools according to the machining feed mode. In the former, the tool is installed horizontally. During machining, the tool moves horizontally to machine the workpiece, or the tool remains stationary while the workpiece moves horizontally closer to the tool to achieve machining. In the latter, the tool is installed vertically, that is, vertically. During machining, the tool moves vertically to machine the workpiece, or the tool remains stationary while the workpiece moves vertically closer to the tool to achieve machining.

[0003] In traditional vertical feed type machine tools, generally, the tool is located at the upper part and the workpiece is located at the lower part. This structure has the following defects: the chips generated during tool machining may be deposited in the machining position (such as the hole formed by drilling), and chip removal is relatively difficult. The chips will increase the rotational resistance of the tool, reduce the machining efficiency, and also affect the programming control function of different rotational speeds and feed rates required for machining workpieces of different materials.

[0004] In addition, there is no coolant spraying at the center position of the tool tip of the traditional machine tool. The cooling method is generally to install a coolant pipe beside the tool, and the coolant is pumped into the coolant pipe by a liquid pump and sprayed towards the tool tip to achieve the purpose of cooling while machining. This cooling method has the following defects: First, no matter how accurately the coolant pipe is aligned, it is very difficult for the coolant to truly come into direct contact with the center position of the tool tip. During machining processes such as drilling, the center position of the tool tip is in direct contact with the workpiece and rotates at a high speed, which is the part with the largest heat generation. Therefore, the cooling effect for drilling machining can never reach the best, and it will waste a large amount of coolant resources. At the same time, it is not conducive to efficient chip removal. Second, when the machining position of the tool changes due to different workpieces, the position of the coolant pipe needs to be adjusted, which not only increases the difficulty of aligning with the tool tip, but also is time-consuming and laborious to operate, and is inconvenient to use.

[0005] In addition, the tool of the traditional machine tool is installed on the spindle through a tool holder, which requires secondary connection, resulting in a relatively long distance between the cutting edge of the tool and the stress point of the spindle neck, poor stability, and also requires secondary loading and unloading, which requires more auxiliary time. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a vertical feed type machine tool convenient for chip removal to solve the above problems.

[0007] The utility model realizes the above purpose through the following technical solutions:

[0008] A vertical feed type machine tool facilitating chip removal, comprising a base, a frame, a tool driving motor, a spindle, a tool, and a workpiece mounting plate. The frame is connected to the upper part of the base. The tool driving motor is installed on the frame. The rotating shaft of the tool driving motor is connected to the spindle through a transmission device. The tool is installed on the upper part of the spindle. The vertical feed type machine tool facilitating chip removal further comprises a workpiece moving device, a chip conveying screw, and a chip conveying motor. The workpiece moving device is installed on the frame. The workpiece mounting plate is installed on the lower part of the workpiece moving device. The tool is located below the workpiece mounting plate. The chip conveying motor is installed on the base and located below the spindle. The chip conveying screw is connected to the rotating shaft of the chip conveying motor.

[0009] Preferably, in order to achieve a reliable vertical movement control function, the workpiece moving device comprises a workpiece moving motor, a vertical lead screw, a workpiece moving table, and a vertical slide rail. The workpiece moving motor is installed on the frame and its rotating shaft is connected to the upper end of the lead screw. A nut is provided on the workpiece moving table and the lead screw passes through the threaded hole of the nut. The slide rail is installed on the frame. A chute is provided on the workpiece moving table and the slide rail passes through the chute. The workpiece mounting plate is installed on the lower part of the workpiece moving table.

[0010] Preferably, in order to facilitate the installation and fixation of the workpiece, an oil cylinder or a cylinder is installed on the workpiece moving table. The lower end of the vertical push rod at the lower part of the oil cylinder or the cylinder is connected to the workpiece mounting plate. A workpiece positioning tray is provided above the middle of the workpiece mounting plate. The workpiece positioning tray and the workpiece mounting plate are respectively provided with vertical through holes for the tool to pass through. A workpiece positioning pressure plate is provided at the lower part of the workpiece moving table. The workpiece positioning pressure plate is located above the workpiece positioning tray.

[0011] Preferably, in order to achieve a more reliable workpiece positioning function and vertical movement function, there are two oil cylinders or cylinders which are respectively located on both sides of the workpiece positioning pressure plate. The lower ends of the vertical push rods of the two oil cylinders or cylinders are respectively connected to both ends of the workpiece mounting plate. There are two slide rails which are respectively located on both sides of the lead screw.

[0012] Preferably, in order to make the structure of the machine tool more compact and reduce the overall height and volume, the transmission device comprises a driving gear, a transmission gear, and a driven gear. The lower end of the rotating shaft of the tool driving motor is connected to the driving gear. The driving gear is connected to the driven gear through the transmission gear. The driven gear is sleeved on the lower section of the spindle through its central through hole.

[0013] Preferably, in order to achieve better cooling effect and chip removal function during the operation of the tool and facilitate the quick installation and disassembly of the tool, the spindle is provided with a spindle inner hole that is open at the upper end and closed at the lower end. The upper part of the tool is a tool head, and the middle and lower parts are a tool holder. The lower end of the tool holder is placed inside the spindle inner hole. The cooling cylinder that is cylindrical and axially through is sleeved outside the spindle. An annular inner cavity is provided between the inner wall of the cooling cylinder and the outer wall of the spindle. A coolant inlet that is through from the inside to the outside is provided at a position on the cylinder wall of the cooling cylinder corresponding to the annular inner cavity. A radial through hole communicating with the spindle inner hole is provided at a position on the spindle corresponding to the annular inner cavity. A coolant through hole is provided at the central position of the tool. The upper end of the coolant through hole is located at the central position of the tool head and is open, and the lower end is located at the lower end of the tool holder and is open. According to actual needs, the tool can also be made into a split structure. The middle part is a "U"-shaped drill body. The tool handle of the "U"-shaped drill body is installed inside the spindle inner hole. The tool sleeve is installed on the end face of the spindle with the "U"-shaped drill body as the center. The upper side and the vertical direction of the spindle inner hole are opened to communicate with the water holes of the tool sleeve, so that the coolant can be sprayed out at high speed at the cutting ends of the "U"-shaped drill body and the tool sleeve simultaneously.

[0014] Preferably, for the convenience of processing and assembly, two first bearings arranged vertically are installed between the inner wall of the cooling cylinder and the outer wall of the spindle. First sealing rings are respectively provided at the upper and lower ends of each first bearing. An annular inner cavity is formed between two adjacent first sealing rings.

[0015] Preferably, in order to better block external liquid or dust from entering the first bearing, an annular retaining cover and an annular retaining ring are respectively provided between the position above the uppermost first sealing ring on the inner wall of the cooling cylinder and the outer wall of the spindle and between the position below the lowermost first sealing ring on the inner wall of the cooling cylinder and the outer wall of the spindle. The outer peripheral edge of the annular retaining ring is placed in the corresponding annular groove on the inner wall of the cooling cylinder and presses the corresponding annular retaining cover on the corresponding first sealing ring.

[0016] Preferably, in order to facilitate the installation of the spindle on the machine tool and enable it to rotate freely, the lower part of the cooling cylinder is provided with a conical section that is smaller at the upper part and larger at the lower part. The lower end of the conical section is connected to an annular bearing end cover. A second bearing is sleeved on the spindle at a position below the bearing end cover. The edge of the bearing end cover is connected to the outer ring of the second bearing. The outer ring of the second bearing is connected to the machine frame through a transmission box cover, and the driven gear, the transmission gear, and the driving gear are all located below the transmission box cover. A section of the spindle corresponding to the second bearing has an increased outer diameter to form a large-diameter section, and the inner ring of the second bearing is connected to the outer wall of the large-diameter section. The second bearing is located above the driven gear.

[0017] Preferably, in order to supply high-pressure coolant to the tool, the coolant inlet is connected to the outlet of the coolant pipe, the inlet of the coolant pipe is connected to the outlet of the booster pump, and the inlet of the booster pump is placed inside the coolant tank or connected to the coolant tank.

[0018] The beneficial effects of the present utility model are as follows:

[0019] In the present utility model, by arranging the tool below the workpiece mounting plate, mounting the workpiece mounting plate on the lower part of the workpiece moving device, and mounting the workpiece moving device on the machine frame, the chips generated during tool processing will not deposit in the processing position (such as the hole formed by drilling), significantly improving the chip removal ability. And the chips are discharged from the base in time through the chip conveying screw, thoroughly solving the problem of difficult chip removal, improving the processing efficiency, and can be arbitrarily adjusted as needed in the programming control of different rotational speeds and feed rates required for processing workpieces of different materials; the feeding function during tool processing is realized by vertically moving the workpiece. The tool is connected to the spindle and only needs to have a rotating function, without the need for the tool to move vertically, which is convenient for the cooperation and coordination between components and has a compact structure, can reduce the height of the machine tool and reduce the volume of the machine tool; by sleeving a cooling cylinder on the spindle, arranging an annular inner cavity between the cooling cylinder and the spindle, arranging a coolant inlet on the cylinder wall of the cooling cylinder, arranging a radial through hole on the spindle, and arranging a coolant through hole at the central position of the tool, during use, the coolant can be injected into the inner hole of the spindle from the coolant inlet, and then sprayed out from the central position of the tool head through the coolant through hole, so that the coolant can truly directly contact the central position of the tool head. During processing such as drilling, more efficient cooling is carried out on the part with the largest heat generation, significantly improving the cooling effect and saving coolant, and facilitating efficient chip removal; at the same time, since the cooling cylinder is integrally connected to the spindle, during application, when the processing position of the tool changes due to different workpiece sizes, the best cooling effect can be achieved without any other operations, which is time-saving and labor-saving and convenient to use; in addition, the tool adopts an integrally formed structure, and the distance between the force application point of the cutting edge of the tool head and the spindle journal can be shortened to the maximum extent, improving the cutting stability, and at the same time improving the tool loading and unloading efficiency, effectively improving the work efficiency. Description of the Drawings

[0020] Figure 1 is a perspective view of the vertical feed type machine tool for facilitating chip removal according to the present utility model;

[0021] Figure 2 is a perspective view of the vertical feed type machine tool for facilitating chip removal according to the present utility model after removing the base and the outer shell;

[0022] Figure 3 is a perspective view of the vertical feed type machine tool for facilitating chip removal according to the present utility model after removing the base, the machine frame, the outer shell, the chip conveying screw, the chip conveying motor and the coolant tank;

[0023] Figure 4 It is the front view cross-sectional view after the spindle and the tool of the vertical feed type machine tool facilitating chip removal described in the present utility model are assembled. Specific embodiments

[0024] The present utility model will be further described below in conjunction with the accompanying drawings:

[0025] As Figures 1-4 shown, the vertical feed type machine tool facilitating chip removal described in the present utility model includes a base 6, a housing 2 (preferably a sheet metal protective cover), a frame 10, a tool driving motor 26, a spindle 23, a tool, a workpiece mounting plate 18, a workpiece moving device, a chip conveying screw 20 and a chip conveying motor 5. The frame 10 placed inside the housing 2 is connected to the upper part of the base 6. The tool driving motor 26 is installed on the frame 10. The rotating shaft of the tool driving motor 26 is connected to the spindle 23 through a transmission device. The tool is installed on the upper part of the spindle 23. The workpiece moving device is installed on the frame 10. The workpiece mounting plate 18 is installed on the lower part of the workpiece moving device. The tool is located below the workpiece mounting plate 18. The chip conveying motor 5 is installed on the base 6 and is located below the spindle 23. The chip conveying screw 20 is connected to the rotating shaft of the chip conveying motor 5.

[0026] As Figures 1-4 shown, the present utility model also discloses the following multiple more optimized specific structures:

[0027] In order to achieve a reliable vertical movement control function, the workpiece moving device includes a workpiece moving motor 1, a vertical lead screw 12, a workpiece moving table 14 and a vertical slide rail 11. The workpiece moving motor 1 is installed on the frame 10 and its rotating shaft is connected to the upper end of the lead screw 12. A nut (invisible in the figure) is provided on the workpiece moving table 14 and the lead screw 12 passes through the threaded hole of the nut. The slide rail 11 is installed on the frame 10. A chute (invisible in the figure) is provided on the workpiece moving table and the slide rail 11 passes through the chute. The workpiece mounting plate 18 is installed on the lower part of the workpiece moving table 14.

[0028] In order to facilitate the installation and fixation of the workpiece 16, an oil cylinder 13 (or air cylinder) is installed on the workpiece moving table 14. The lower end of the vertical push rod at the lower part of the oil cylinder 13 (or air cylinder) is connected to the workpiece mounting plate 18. A workpiece positioning tray 17 is provided above the middle of the workpiece mounting plate 18. Vertical through holes (invisible in the figure) for the tool to pass through are respectively provided in the middle of the workpiece positioning tray 17 and the workpiece mounting plate 18. A workpiece positioning pressing plate 15 is provided at the lower part of the workpiece moving table 14. The workpiece positioning pressing plate 15 is located above the workpiece positioning tray 17.

[0029] To achieve a more reliable workpiece positioning function and vertical movement function, there are two oil cylinders 13 (or air cylinders), which are respectively located on both sides of the workpiece positioning pressing plate 15. The lower ends of the vertical push rods of the two oil cylinders 13 (or air cylinders) are respectively connected to both ends of the workpiece mounting plate 18. There are two slide rails 11, which are respectively located on both sides of the lead screw 12.

[0030] To make the structure of the machine tool more compact and reduce the overall height and volume, the transmission device includes a driving gear 33, a transmission gear 32 and a driven gear 31. The lower end of the rotating shaft of the tool driving motor 26 is connected to the driving gear 33. The driving gear 33 is connected to the driven gear 31 through the transmission gear 32. The driven gear 31 is sleeved on the lower section of the main shaft 23 through its central through hole. The transmission device can also adopt a structure driven by a synchronous belt or other transmission components according to the working conditions.

[0031] To achieve better cooling effect and chip removal function during tool operation and facilitate quick installation and disassembly of the tool, the main shaft 23 is provided with a main shaft inner hole 44 with an open upper end and a closed lower end. The upper part of the tool is a tool tip 21, and the middle and lower part is a tool holder 22. The lower end of the tool holder 22 is placed in the main shaft inner hole 44. A cylindrical cooling cylinder 25 with an axial through hole is sleeved outside the main shaft 23. There is an annular inner cavity 40 between the inner wall of the cooling cylinder 25 and the outer wall of the main shaft 23. At a position corresponding to the annular inner cavity 40 on the cylinder wall of the cooling cylinder 25, there is a coolant inlet 27 that penetrates through the inside and outside. At a position corresponding to the annular inner cavity 40 on the main shaft 23, there is a radial through hole 41 communicating with the main shaft inner hole 44. A coolant through hole 34 is provided at the central position of the tool. The upper end of the coolant through hole 34 is located at the center of the tool tip 21 and is open, and the lower end is located at the lower end of the tool holder 22 and is open.

[0032] To facilitate processing and assembly, two first bearings 38 arranged vertically are installed between the inner wall of the cooling cylinder 25 and the outer wall of the main shaft 23. At the upper and lower ends of each first bearing 38, there is a first sealing ring 39 respectively. An annular inner cavity 40 is formed between the two first sealing rings 39 close to each other. Here, the first sealing ring 39 adopts a rotating sealing ring, that is, a dynamic sealing ring.

[0033] To better prevent external liquid or dust from entering the first bearing 38, an annular retaining cover 37 and an annular retaining ring 36 are respectively provided between the position above the uppermost first sealing ring 39 on the inner wall of the cooling cylinder 25 and the outer wall of the main shaft 23, and between the position below the lowermost first sealing ring 39 on the inner wall of the cooling cylinder 25 and the outer wall of the main shaft 23. The outer peripheral edge of the annular retaining ring 36 is placed in the corresponding annular groove on the inner wall of the cooling cylinder 25 and presses the corresponding annular retaining cover 37 on the corresponding first sealing ring 39.

[0034] To facilitate the installation of the main shaft 23 on the machine tool and enable it to rotate freely, a conical section 28 with a smaller upper part and a larger lower part is provided at the lower part of the cooling cylinder 25. The lower end of the conical section 28 is connected to an annular bearing end cover 29. A second bearing 43 is sleeved on the main shaft 23 at a position below the bearing end cover 29. The edge of the bearing end cover 29 is connected to the outer ring of the second bearing 43. The outer ring of the second bearing 43 is connected to the machine frame 10 through a transmission box cover 30, and the driven gear 31, the transmission gear 32, and the driving gear 33 are all located below the transmission box cover 30. The outer diameter of a section of the main shaft 23 corresponding to the second bearing 43 increases to form a large-diameter section 47, and the inner ring of the second bearing 43 is connected to the outer wall of the large-diameter section 47. The second bearing 43 is located above the driven gear 31.

[0035] To supply high-pressure coolant to the tool, the coolant inlet 27 is connected to the outlet of a coolant pipe (not visible in the figure). The inlet of the coolant pipe is connected to the outlet of a booster pump (not visible in the figure and located in the coolant tank 8). The inlet of the booster pump is placed in the coolant tank 8 (or connected to the coolant tank 8).

[0036] To more reliably install the second bearing 43 and better connect the conical section 28 of the cooling cylinder 25 with the bearing end cover 29, a retaining ring (not marked in the figure) protruding outward in the circumferential direction is provided at a position above the second bearing 43 in the large-diameter section 47 of the main shaft 23. The upper end of the inner ring of the second bearing 43 is in close contact with the lower surface of the retaining ring. A position near the inner wall of the circumference of the bearing end cover 29 protrudes upward and is located inside the conical section 28, and a second sealing ring 42 is provided between it and the outer wall of the main shaft 23. The lower end of the conical section 28 is provided with a concave ring 45, and a convex ring 46 protruding upward is provided at a position corresponding to the concave ring 45 on the upper surface of the bearing end cover 29. The convex ring 46 is placed inside the concave ring 45. Here, the second sealing ring 42 uses a rotary sealing ring, that is, a dynamic sealing ring.

[0037] To achieve a better cooling effect, the tool holder 22 and the tool head 21 are integrally formed. The tool holder 22 is provided with coolant diversion holes 35 that are communicated with the coolant through holes 34 and are used to divert the coolant to both sides of the tool head 21.

[0038] Figure 1 Also shown is a control box 1 installed on the outer wall of the housing 2. The control box 3 is provided with a controller. The control output end of the controller is respectively connected to the control input ends of the tool driving motor 26, the chip conveying motor 5, the workpiece moving motor 1, the control input end of the oil cylinder 13 (or air cylinder), and the control input end of the booster pump, realizing an automatic control function; Figure 1 Also shown is a switch door 4 provided on the housing 2, which is used for processing operations when opened and preventing dust when closed, and a chip outlet 7 provided on the base 6, which is used to discharge the chips generated during processing; Figure 2Also shown is a motor mounting seat 9 disposed on the frame 10, which is used to mount the workpiece moving motor 1, and a transmission connection component between the rotating shaft of the workpiece moving motor 1 and the lead screw 12 is placed in the motor mounting seat 9; Figure 2 Also shown is a tool and spindle assembly 19 including a tool, a spindle 23, a cooling cylinder 25, a first bearing 38, a first sealing ring 39, a second bearing 43, a driven gear 31 and other related components. The tool and spindle assembly 19 is pre-processed as a whole as an integrated cutting processing assembly; Figure 3 and Figure 4 Also shown is a tool locking screw hole 24 disposed at the upper end of the spindle 23, which is used to install a locking screw in the tool locking screw hole 24 to lock the tool holder 22; these structures are conventional adaptive structures and will not be described in detail here.

[0039] like Figures 1-4 As shown, when in use, the switch door 4 is opened, and the workpiece mounting plate 18 is moved downward into position by the oil cylinder 13 (or air cylinder), and then the oil cylinder 13 (or air cylinder) stops running, and the workpiece 16 to be processed is placed in the positioning groove of the workpiece positioning tray 17 by manual or mechanical hands, and then the workpiece mounting plate 18 is moved upward by the oil cylinder 13 (or air cylinder) until the top of the workpiece 16 is in close contact with the bottom of the workpiece positioning pressure plate 15, and then the oil cylinder 13 (or air cylinder) stops running, thereby achieving the purpose of reliably mounting the workpiece 16 on the workpiece mounting plate 18. The workpiece moving motor 1 is started. With the cooperation of the lead screw 12 and the nut, the workpiece moving platform 14 drives the workpiece 16 to move downward until the cutter head 21 of the tool passes through the corresponding through holes of the workpiece mounting plate 18 and the workpiece positioning tray 17 and contacts the position to be processed below the workpiece 16. Then the tool driving motor 26 and the booster pump in the coolant tank 8 are started. The tool driving motor 26 drives the spindle 23 and the tool to rotate at high speed through the transmission device. The cutter head 21 realizes the cutting and drilling function below the workpiece 16. At the same time, the coolant enters the spindle inner hole 44 through the coolant inlet 27, the annular inner cavity 40 and the radial through hole 41, and is discharged from the center position of the upper end of the cutter head 21 through the coolant through hole 34. The workpiece moving motor 1 is controlled to start intermittently according to the progress of cutting and drilling until the feed amount required for processing is completed, and then the workpiece moving motor 1 is started to rotate in the opposite direction, so that the workpiece 16 is moved up to the position where it is needed, and then the processed workpiece 16 is taken out by a human or a robot to complete the processing of the workpiece 16.

[0040] The above embodiments are only the preferred embodiments of the present utility model and do not limit the technical solutions of the present utility model. Any technical solutions that can be achieved on the basis of the above embodiments without creative efforts shall be regarded as falling within the scope of the patent rights of the present utility model.

Claims

1. A vertical feed type machine tool for easy chip removal, comprising a base, a frame, a tool drive motor, a spindle, a tool, and a workpiece mounting plate, wherein the frame is connected to the upper part of the base, the tool drive motor is mounted on the frame, the rotating shaft of the tool drive motor is connected to the spindle through a transmission device, and the tool is mounted on the upper part of the spindle, characterized in that: The vertical feed machine tool for easy chip removal also includes a workpiece moving device, a chip conveying screw and a chip conveying motor. The workpiece moving device is installed on the frame, the workpiece mounting plate is installed at the lower part of the workpiece moving device, the tool is located below the workpiece mounting plate, the chip conveying motor is installed on the base and located below the spindle, and the chip conveying screw is connected to the rotating shaft of the chip conveying motor.

2. The vertical feed machine tool for easy chip removal according to claim 1, characterized in that: The workpiece moving device includes a workpiece moving motor, a vertical lead screw, a workpiece moving platform and a vertical slide rail. The workpiece moving motor is installed on the frame and its rotating shaft is connected to the upper end of the lead screw. A nut is provided on the workpiece moving platform and the lead screw passes through the screw hole of the nut. The slide rail is installed on the frame. A slide groove is provided on the workpiece moving platform and the slide rail passes through the slide groove. The workpiece mounting plate is installed at the lower part of the workpiece moving platform.

3. The vertical feed machine tool for easy chip removal according to claim 2, characterized in that: An oil cylinder or an air cylinder is installed on the workpiece moving platform, and the lower end of the vertical push rod at the bottom of the oil cylinder or the air cylinder is connected to the workpiece mounting plate. A workpiece positioning pallet is provided above the middle of the workpiece mounting plate. The workpiece positioning pallet and the workpiece mounting plate are respectively provided with vertical through holes for the tool to pass through. A workpiece positioning pressure plate is provided at the bottom of the workpiece moving platform, and the workpiece positioning pressure plate is located above the workpiece positioning pallet.

4. The vertical feed machine tool for easy chip removal according to claim 3, characterized in that: There are two oil cylinders or air cylinders and they are located on both sides of the workpiece positioning plate respectively. The lower ends of the vertical push rods of the two oil cylinders or air cylinders are connected to the two ends of the workpiece mounting plate respectively. There are two slide rails and they are located on both sides of the lead screw respectively.

5. The vertical feed machine tool for easy chip removal according to any one of claims 1 to 4, characterized in that: The transmission device includes a driving gear, a transmission gear and a driven gear. The lower end of the rotating shaft of the tool driving motor is connected to the driving gear, and the driving gear is connected to the driven gear through the transmission gear. The driven gear is sleeved on the lower section of the main shaft through its own center through hole.

6. The vertical feed machine tool for easy chip removal according to claim 5, characterized in that: The spindle is provided with a spindle inner hole which is open at the upper end and closed at the lower end; the upper part of the tool is a cutter head, and the middle and lower part is a cutter seat; the lower end of the cutter seat is placed in the spindle inner hole; a cylindrical and axially penetrating cooling cylinder is sleeved outside the spindle; a circular ring inner cavity is provided between the inner wall of the cooling cylinder and the outer wall of the spindle; a coolant inlet which passes through inside and outside is provided on the cylinder wall of the cooling cylinder at a position corresponding to the circular ring inner cavity; a radial through hole which is connected to the spindle inner hole is provided at a position corresponding to the circular ring inner cavity on the spindle; a coolant through hole is provided at the center position of the tool; the upper end of the coolant through hole is located at the center position of the cutter head and is open, and the lower end is located at the lower end of the cutter seat and is open.

7. The vertical feed machine tool for easy chip removal according to claim 6, characterized in that: Two first bearings arranged vertically are installed between the inner wall of the cooling cylinder and the outer wall of the main shaft. First sealing rings are respectively provided at the upper and lower ends of each first bearing, and the annular inner cavity is formed between the two first sealing rings close to each other.

8. The vertical feed machine tool for easy chip removal according to claim 7, characterized in that: An annular blocking cover and an annular blocking ring are respectively provided between a position above the first sealing ring at the top of the inner wall of the cooling cylinder and the outer wall of the main shaft, and between a position below the first sealing ring at the bottom of the inner wall of the cooling cylinder and the outer wall of the main shaft. The outer peripheral edge of the annular blocking ring is placed in a corresponding annular groove on the inner wall of the cooling cylinder and the corresponding annular blocking cover is pressed against the corresponding first sealing ring.

9. The vertical feed machine tool for easy chip removal according to claim 8, characterized in that: The lower part of the cooling cylinder is provided with a conical section which is smaller at the top and larger at the bottom, and the lower end of the conical section is connected to the annular bearing end cover, and a second bearing is mounted on the main shaft at a position below the bearing end cover, and the edge of the bearing end cover is connected to the outer ring of the second bearing, and the outer ring of the second bearing is connected to the frame through a transmission box cover, and the driven gear, the transmission gear and the driving gear are all located below the transmission box cover, and a section of the main shaft corresponding to the second bearing has an increased outer diameter to form a large diameter section, and the inner ring of the second bearing is connected to the outer wall of the large diameter section, and the second bearing is located above the driven gear.

10. The vertical feed machine tool for easy chip removal according to any one of claims 1 to 4, characterized in that: The coolant inlet is connected to the outlet of the coolant pipe, the inlet of the coolant pipe is connected to the outlet of the boost pump, and the inlet of the boost pump is placed in the coolant tank or connected to the coolant tank.

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