Four-axis numerical control milling machine for processing screw of vacuum pump

Abstract

This utility model belongs to the field of screw processing technology, and relates to a four-axis CNC milling machine for vacuum pump screw processing. It includes a milling machine body, a drive unit body mounted on the top inner side of the milling machine body, a lubrication assembly on the top of the drive unit body, a water-permeable plate mounted on the top inner side of the milling machine body, and a water storage tank located near the water-permeable plate on the inner side of the milling machine body. Through the design of the discharge assembly and shock-absorbing assembly, this utility model allows the iron filings, after being squeezed inside the pressure groove, to directly detach from the milling machine body. This makes subsequent processing of the iron filings generated during cutting faster and more convenient, while reducing the noise generated when the iron filings fall to the ground, further increasing the practicality, environmental friendliness, and safety of the device.

Description

Technical Field

[0001] This utility model belongs to the field of screw processing technology, and relates to a four-axis CNC milling machine for processing vacuum pump screws. Background Technology

[0002] A vacuum pump screw is a pair of helical blades in a screw vacuum pump. They rotate synchronously and in opposite directions at high speed in the pump casing, thereby generating suction and exhaust. It has the characteristics of wide pumping speed range, simple and compact structure, long service life and low energy consumption, and is widely used in pharmaceutical, semiconductor and other industries.

[0003] As disclosed in patent (CN219901345U), it describes a cleaning mechanism that includes a bed frame and a worktable. The worktable is located between the workpiece clamping and rotating mechanisms and has a condensate inclined groove on its surface. After the workpiece is milled, before removing the workpiece, one end of the magnetic plate on the outside of the worktable is held and shaken left and right. The magnetic plate inside the worktable sweeps over a wide area, magnetically attracting the iron filings that fall on the worktable. When the magnetic plate is full of iron filings, the magnetic plate is pulled outward. The iron filings on the magnetic plate fall into the waste trough under the obstruction of the positioning scraper, and are then guided to the waste collection box through the waste guide pipe. The condensate inclined groove allows the condensate after use to flow into the waste collection box through the waste trough and the waste guide pipe. This cleaning mechanism is simple, quick to use, and has a good magnetic cleaning effect through the magnetic plate.

[0004] When using the above technology, the following technical problems were found in the existing technology: when collecting the generated iron filings through the magnetic plate, the iron filings are still inside the device and need to be cleaned regularly. During use, the accumulation of iron filings inside the device will contaminate the cutting fluid, resulting in waste of resources and affecting the practicality and safety of the device. Utility Model Content

[0005] The technical problem this invention aims to solve is that when collecting iron filings using a magnetic plate, the iron filings still remain inside the device and require regular cleaning. During use, the accumulation of iron filings inside the device contaminates the cutting fluid, leading to resource waste and affecting the device's practicality and safety.

[0006] This utility model discloses a four-axis CNC milling machine for machining vacuum pump screws, comprising a milling machine body, a drive unit body mounted on the top inner side of the milling machine body, a lubrication assembly on the top of the drive unit body, a water permeable plate mounted on the top inner side of the milling machine body, a water storage tank located near the water permeable plate on the inner side of the milling machine body, a pressure groove located on the side of the milling machine body away from the water permeable plate, a telescopic cylinder body mounted on the outer side of the milling machine body, a pressure block mounted on the output end of the telescopic cylinder body, a pressure block slidably connected inside the pressure groove, a discharge assembly located near the telescopic cylinder body on the inner side of the milling machine body, and a shock absorption assembly located near the discharge assembly on the bottom inner side of the milling machine body.

[0007] The material discharge assembly includes a rotating shaft, which is installed on the inner bottom of the milling machine body. A baffle is installed on the outer side of the milling machine body. A return spring is fixedly connected to one end of the rotating shaft on the outer side of the milling machine body, and the other end of the return spring is connected to the milling machine body. A sliding groove is fixedly connected to the inner bottom of the milling machine body. A slide rod is fixedly connected inside the sliding groove. A buffer spring is installed on the outer side of the slide rod. A limit block is slidably connected inside the sliding groove. The limit block slides on the outer side of the slide rod. A first rack is fixedly connected to one end of the limit block. Multiple sets of lifting blocks are fixedly connected to the milling machine body near the sliding groove. A turning gear is rotatably connected inside the lifting block. The turning gear meshes with the first rack. A handle is fixedly connected to one end of the turning gear.

[0008] The damping assembly includes a damping rod located at the bottom inner side of the milling machine body. A damping plate is fixedly connected to the telescopic end of the damping rod. A buffer groove is formed on the inner side of the milling machine body near the damping plate. A rotating rod is fixedly connected inside the buffer groove. A half-gear block is rotatably connected to the outside of the rotating rod. A paddle is fixedly connected to the outside of the half-gear block. A second rack is slidably connected to one side of the buffer groove. The second rack meshes with the half-gear block. One end of the second rack is connected to the damping plate.

[0009] The lubrication assembly includes an oil reservoir located on one side of the top of the drive unit body. A corrugated bladder is installed at the bottom of the oil reservoir, and two sets of guide pipes are installed at the output end of the oil reservoir. The ends of the guide pipes are connected to the drive unit body.

[0010] A shock-absorbing spring is fixed to the bottom of the second rack.

[0011] An inclined plate is fixed to the inner side of the milling machine body near the pressure groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: through the design of the discharge component and the shock absorption component, the iron chips that have been squeezed inside the pressure groove can be directly separated from the milling machine body, making the subsequent processing of the iron chips generated by cutting more rapid and convenient, while reducing the noise generated when the iron chips fall to the ground, and further increasing the practicality, environmental protection and safety of the device.

[0013] The design of the discharge and shock absorption components allows the iron filings to be quickly discharged from the device after being squeezed, reducing the accumulation of iron filings inside the device and minimizing the impact of vibrations caused by iron filings falling to the ground on the device's operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the main body of the milling machine of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the main body of the milling machine of this utility model.

[0017] Figure 3 This is a schematic diagram of the main body of the driving device of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the oil storage tank of this utility model.

[0019] Figure 5 yes Figure 2 Enlarged view of point A.

[0020] Figure 6 yes Figure 3 Enlarged view of point B.

[0021] In the diagram: 1. Milling machine body, 11. Drive unit body, 12. Water permeable plate, 13. Water storage tank, 14. Telescopic cylinder body, 15. Pressure groove, 16. Pressure block, 2. Rotary shaft, 21. Return spring, 22. Baffle, 23. Sliding groove, 24. Limiting block, 25. Slide rod, 26. Buffer spring, 27. First rack, 28. Lifting block, 29. Actuating gear, 200. Handle, 3. Damping rod, 31. Vibration damping plate, 32. Buffer groove, 33. Rotating rod, 34. Half gear block, 35. Paddle, 36. Second rack, 4. Oil storage tank, 41. Guide pipe, 42. Bellows, 5. Vibration damping spring, 6. Inclined plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] Example 1

[0027] like Figure 1 - Figure 6 As shown, a four-axis CNC milling machine for machining vacuum pump screws includes a milling machine body 1. A drive unit body 11 is installed on the top inner side of the milling machine body 1. A lubrication assembly is provided on the top of the drive unit body 11. A water permeable plate 12 is installed on the top inner side of the milling machine body 1 to separate cutting fluid from iron filings. A water storage tank 13 is provided on the inner side of the milling machine body 1 near the water permeable plate 12. A pressure groove 15 is provided on the side of the milling machine body 1 away from the water permeable plate 12. A telescopic cylinder body 14 is installed on the outer side of the milling machine body 1. A pressure block 16 is installed at the output end of the telescopic cylinder body 14. The pressure block 16 is slidably connected inside the pressure groove 15. A discharge assembly is provided on the inner side of the milling machine body 1 near the telescopic cylinder body 14. A shock absorption assembly is provided on the bottom inner side of the milling machine body 1 near the discharge assembly.

[0028] During operation, the screw to be machined is installed on top of the milling machine body 1, and then machining is performed. The resulting iron filings, mixed with cutting fluid, fall into the milling machine body 1. When the mixture of iron filings and cutting fluid falls above the permeable plate 12, the permeable plate 12 blocks the iron filings, while the cutting fluid falls into the water storage tank 13. After use, the iron filings are blown into the pressure groove 15, and then the telescopic cylinder body 14 is driven to make the pressure block 16 squeeze the iron filings inside the pressure groove 15. After squeezing, the discharge assembly is used to remove the iron filings from the pressure groove 15. Inside, when the chips fall onto the top of the shock-absorbing component, the vibration caused by the falling of the chips is reduced. When the main body 11 of the drive device is working, it will drive the lubrication component to lubricate the inside of the main body 11 of the drive device, which has a beneficial effect. Through the design of the discharge component and the shock-absorbing component, the chips that have been squeezed inside the pressure groove 15 can be directly separated from the milling machine body 1, which makes the subsequent processing of the chips generated by cutting more rapid and convenient. At the same time, it reduces the noise generated when the chips fall, and further increases the practicality, environmental protection and safety of the device.

[0029] Example 2

[0030] like Figures 1-3 , Figures 5-6 As shown, the material discharge assembly includes a rotating shaft 2, which is installed on the inner bottom of the milling machine body 1. A baffle 22 is installed on the outer side of the milling machine body 1. A return spring 21 is fixedly connected to one end of the rotating shaft 2 on the outer side of the milling machine body 1, and the other end of the return spring 21 is connected to the milling machine body 1. A sliding groove 23 is fixedly connected to the inner bottom of the milling machine body 1. A slide rod 25 is fixedly connected inside the sliding groove 23. A buffer spring 26 is installed on the outer side of the slide rod 25. A limit block 24 is slidably connected inside the sliding groove 23. The limit block 24 slides outside the slide rod 25. A first rack 27 is fixedly connected to one end of the limit block 24. Multiple sets of lifting blocks 28 are fixedly connected inside the milling machine body 1 near the sliding groove 23. The lifting blocks 28 rotate internally. A toggle gear 29 is connected, which meshes with a first rack 27. A handle 200 is fixedly connected to one end of the toggle gear 29. The damping assembly includes a damping rod 3, which is located at the bottom of the inner side of the milling machine body 1. A damping plate 31 is fixedly connected to the telescopic end of the damping rod 3. A buffer groove 32 is opened on the inner side of the milling machine body 1 near the damping plate 31. A rotating rod 33 is fixedly connected inside the buffer groove 32. A half gear block 34 is rotatably connected to the outside of the rotating rod 33. A paddle 35 is fixedly connected to the outside of the half gear block 34. A second rack 36 is slidably connected to one side of the buffer groove 32. The second rack 36 meshes with the half gear block 34. One end of the second rack 36 is connected to the damping plate 31.

[0031] During operation, after the pressure block 16 has finished compressing the iron filings inside the pressure groove 15, the handle 200 is turned, causing the actuating gear 29 to rotate inside the lifting block 28. This causes the first rack 27 and the limiting block 24 to slide inside the sliding groove 23, thus releasing the limiting block 24 from restricting the baffle 22. When the limiting block 24 is no longer restricting, the iron filings compressed into blocks at the top of the baffle 22 fall downwards due to gravity, applying a pushing force to the baffle 22. This causes the baffle 22 to begin rotating around the return spring 21. At this time, the return spring 21 connecting the baffle 22 and the milling machine body 1 begins to deform and falls onto the top of the shock-absorbing plate 31. When the damping rod 3 begins to deform and displace, and the iron filings fall onto the top of the damping plate 31, the baffle 22 is no longer under force, the return spring 21 begins to rebound, and the baffle 22 is reset. At the same time, the handle 200 is released, and the buffer spring 26 on the outside of the slide rod 25 begins to reset, so that the limit block 24 re-limits the baffle 22. At the same time, when the iron filings fall onto the top of the damping plate 31, the damping plate 31 moves downward, which drives the second rack 36 downward, so that the half gear block 34 begins to rotate around the rotating rod 33. Then the paddle 35 pushes away the iron filings that have fallen onto the top of the damping plate 31, so that they leave the milling machine body 1 and fall to the ground.

[0032] Example 3

[0033] like Figures 1-6 As shown, the lubrication assembly includes an oil reservoir 4, which is located on one side of the top of the drive unit body 11. A bellows bladder 42 is installed at the bottom of the oil reservoir 4. Two sets of guide pipes 41 are installed at the output end of the oil reservoir 4. The ends of the guide pipes 41 are connected to the drive unit body 11. A damping spring 5 is fixedly connected to the bottom of the second rack 36. An inclined plate 6 is fixedly connected to the inner side of the milling machine body 1 near the pressure groove 15.

[0034] When the device inside the drive unit body 11 moves to the top during operation, it will squeeze the bellows 42 to pump out the lubricating oil inside the oil tank 4, and then spray it into the drive unit body 11 through the guide pipe 41, which further increases the service life of the drive unit body 11. When the second rack 36 moves downward, the shock-absorbing spring 5 will deform, which will further increase the shock absorption capacity of the device. The inclined plate 6 is set on one side of the top of the pressure groove 15, which reduces the amount of cutting fluid entering the pressure groove 15 and further saves cutting fluid resources.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A four-axis CNC milling machine for machining vacuum pump screws, characterized in that: The milling machine body (1) includes a drive unit body (11) installed on the top inner side of the milling machine body (1), a lubrication assembly on the top of the drive unit body (11), a permeable plate (12) installed on the top inner side of the milling machine body (1), a water storage tank (13) located near the permeable plate (12) on the inner side of the milling machine body (1), a pressure groove (15) located on the side of the milling machine body (1) away from the permeable plate (12), a telescopic cylinder body (14) installed on the outer side of the milling machine body (1), a pressure block (16) installed at the output end of the telescopic cylinder body (14), a pressure block (16) slidably connected inside the pressure groove (15), a discharge assembly located near the telescopic cylinder body (14) on the inner side of the milling machine body (1), and a shock absorption assembly located near the discharge assembly on the bottom inner side of the milling machine body (1).

2. The four-axis CNC milling machine for machining vacuum pump screws according to claim 1, characterized in that: The material discharge assembly includes a rotating shaft (2), which is installed on the inner bottom of the milling machine body (1). A baffle (22) is installed on the outer side of the milling machine body (1). A return spring (21) is fixedly connected to one end of the rotating shaft (2) on the outer side of the milling machine body (1). The other end of the return spring (21) is connected to the milling machine body (1). A sliding groove (23) is fixedly connected to the inner bottom of the milling machine body (1). A slide rod (25) is fixedly connected inside the sliding groove (23). A buffer spring is installed on the outer side of the slide rod (25). Spring (26), a limiting block (24) is slidably connected inside the sliding groove (23), the limiting block (24) slides outside the slide rod (25), a first rack (27) is fixedly connected to one end of the limiting block (24), a number of lifting blocks (28) are fixedly connected inside the milling machine body (1) near the sliding groove (23), a turning gear (29) is rotatably connected inside the lifting block (28), the turning gear (29) meshes with the first rack (27), and a handle (200) is fixedly connected to one end of the turning gear (29).

3. A four-axis CNC milling machine for machining vacuum pump screws according to claim 1, characterized in that: The damping assembly includes a damping rod (3), which is located at the bottom of the inner side of the milling machine body (1). A damping plate (31) is fixedly connected to the telescopic end of the damping rod (3). A buffer groove (32) is provided on the inner side of the milling machine body (1) near the damping plate (31). A rotating rod (33) is fixedly connected inside the buffer groove (32). A half gear block (34) is rotatably connected to the outside of the rotating rod (33). A paddle (35) is fixedly connected to the outside of the half gear block (34). A second rack (36) is slidably connected to one side of the buffer groove (32). The second rack (36) meshes with the half gear block (34). One end of the second rack (36) is connected to the damping plate (31).

4. A four-axis CNC milling machine for machining vacuum pump screws according to claim 1, characterized in that: The lubrication assembly includes an oil reservoir (4), which is located on one side of the top of the drive unit body (11). A corrugated bladder (42) is installed at the bottom of the oil reservoir (4). Two sets of guide pipes (41) are installed at the output end of the oil reservoir (4), and the ends of the guide pipes (41) are connected to the drive unit body (11).

5. A four-axis CNC milling machine for machining vacuum pump screws according to claim 3, characterized in that: A shock-absorbing spring (5) is fixedly connected to the bottom of the second rack (36).

6. A four-axis CNC milling machine for machining vacuum pump screws according to claim 1, characterized in that: An inclined plate (6) is fixed to the inner side of the milling machine body (1) near the pressure groove (15).

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