Ball screw shaft machining equipment

Abstract

The invention discloses ball screw shaft machining equipment which comprises a lathe bed, a movable supporting plate is slidably connected to the lathe bed, a grinding mechanism is fixedly arranged on the movable supporting plate, a filtering mechanism is arranged on one side of the grinding mechanism, and a liquid spraying mechanism is arranged on one side of the filtering mechanism. The grinding mechanism comprises a grinding frame fixedly arranged above the movable supporting plate, a grinding wheel is rotationally connected to the center of the upper section of the grinding frame, a power mechanism is arranged on one side of the upper section of the grinding frame, and a cooling element is arranged on the side, adjacent to the face where the power mechanism is located, of the grinding frame. A cutting fluid box is arranged above the cooling element, the filtering mechanism comprises two rotating inner cylinders arranged on the two opposite sides of the cutting fluid box respectively, and the device solves the problems that cutting fluid for current thread grinding is not evenly sprayed, the cooling efficiency is insufficient, and metal particles and impurities mixed in the cutting fluid are prone to blocking a nozzle.

Description

Technical Field

[0001] The invention belongs to the technical field of ball screw shaft processing, and in particular relates to a ball screw shaft processing device. Background Art

[0002] As an ideal precision transmission element that converts rotary motion into linear motion or linear motion into rotary motion, ball screws play an important role in modern mechanical transmission systems. They are mainly composed of key components such as screws, nuts, steel balls, pre-loaded plates, reversers, and dust collectors. Ball screws have many significant advantages. Their transmission efficiency is extremely high, usually reaching more than 90%. Compared with traditional sliding screws, they can greatly reduce energy loss and improve energy utilization. At the same time, they have high-precision characteristics and can achieve micron-level positioning accuracy, meeting many application scenarios with demanding precision. In addition, ball screws also have the advantage of high rigidity. When subjected to large loads, they can still maintain a small deformation, ensuring the stability and reliability of the transmission.

[0003] As the precision requirements for tight threaded parts such as ball screws in the field of high-end equipment manufacturing continue to increase, traditional thread grinding processes face multiple technical challenges. In the existing technology, the cooling system of thread grinders generally has problems such as uneven cutting fluid spraying and insufficient cooling efficiency, which leads to increased wear of the grinding wheel and significant thermal deformation of the workpiece, directly affecting the processing accuracy and surface quality. In addition, metal particles and impurities mixed in the cutting fluid can easily clog the nozzle, causing cooling interruption or insufficient spraying pressure, further exacerbating equipment failure rate and maintenance costs. Summary of the invention

[0004] The purpose of the present invention is to provide a ball screw shaft processing device for the existing device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a ball screw shaft processing device, comprising a bed, a movable support plate is slidably connected to the bed, a grinding mechanism is fixedly arranged on the movable support plate, a filtering mechanism is arranged on one side of the grinding mechanism, and a liquid spraying mechanism is arranged on one side of the filtering mechanism; The grinding mechanism comprises a grinding frame fixedly arranged above the movable support plate, a grinding wheel is rotatably connected to the center of the upper section of the grinding frame, a power mechanism is arranged on one side of the upper section of the grinding frame, a cooling element is arranged on one side of the grinding frame adjacent to the surface where the power mechanism is located, and a cutting fluid tank is arranged above the cooling element; The filtering mechanism includes two rotating inner cylinders respectively arranged on opposite sides of the cutting fluid tank. Each rotating inner cylinder is in communication with the interior of the cutting fluid tank, and each rotating inner cylinder is rotationally engaged with the cutting fluid tank. A plurality of slag passing holes are formed in each rotating inner cylinder. A slag collecting outer cylinder is arranged outside each rotating inner cylinder. The slag collecting outer cylinders on the same side are rotationally engaged with the rotating inner cylinder and are located outside the slag passing holes. One end of each slag collecting outer cylinder away from the cutting fluid tank is connected to a communicating shell. A rotating ring is arranged inside each communicating shell. A connecting ball is rotatably connected to each rotating ring. A hanging plate is connected below each connecting ball. A plurality of blades and a plurality of magnetic rods are arranged below each hanging plate. A collecting box is arranged on one side of the rotating ring below the magnetic rods. A filter screen is arranged at one end of the rotating inner cylinder close to the cutting fluid tank. A fine filter paper is arranged at one end of the communicating shell away from the cutting fluid tank.

[0006] The present invention further explains that a workpiece headstock and a workpiece tailstock are fixedly arranged on the bed body. The workpiece headstock and the workpiece tailstock are opposite to each other. A to-be-machined ball screw is jointly clamped and connected between the workpiece headstock and the workpiece tailstock. The to-be-machined ball screw is parallel to the sliding track of the moving support plate.

[0007] The present invention further explains that the liquid spraying mechanism includes a communicating pipe. One end of the communicating pipe is in communication with the interior of the communicating shell. The other end of each communicating pipe is connected to a spiral elastic pipe. The spiral elastic pipe is an elastic spiral structure with a liquid flow channel inside. A plurality of nozzles are uniformly arranged on the spiral elastic pipe. Two ends of the spiral elastic pipe are respectively fixedly connected to a first bracket and a second bracket. The first bracket is fixedly arranged on the grinding frame. A telescopic rod is also connected between the first bracket and the second bracket.

[0008] The present invention further explains that a central shaft penetrates through the center of the grinding wheel. One end of the central shaft passes through the grinding frame and is connected to one end of a coupling. The other end of the coupling is connected to a grinding motor. The grinding motor is fixedly arranged inside a motor sleeve. The motor sleeve is fixedly arranged on the grinding frame.

[0009] The present invention further explains that conveyor wheels are arranged on both sides of the filtering mechanism on the cutting fluid tank. The conveyor wheels are connected to a power source. A conveyor belt is jointly connected between the conveyor wheels and the rotating inner cylinder.

[0010] The present invention further explains that a sliding groove is formed on the bed body. The moving support plate is in sliding fit with the sliding groove.

[0011] The present invention is further described as follows. A water pump is also arranged in the cutting fluid tank. A support plate is fixedly arranged below the cooling element on the cutting fluid tank. A roller is rotatably connected to one side of the support plate away from the cutting fluid tank.

[0012] The present invention is further described as follows. Through the drive of the telescopic rod, it is ensured that the spiral pitch of the spiral elastic tube is 1.5 - 2 times the spiral pitch to be machined on the to-be-machined ball screw, and the nozzle pitch is 1 / 2 to 2 / 3 of the spiral pitch to be machined on the to-be-machined ball screw.

[0013] The invention is further described as follows. The mass of the collection box is greater than the sum of the masses of the connecting ball, the hanging disc, the blade and the magnetic rod, so as to ensure that the collection box is always located at the bottom of the rotating ring.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, (1) By providing a filtering mechanism, efficient filtering treatment of the cutting fluid is realized. During the filtering process, the impurities in the cutting fluid are thrown out to the slag collection outer cylinder by centrifugal force, and at the same time, the ferromagnetic impurities are adsorbed by the magnetic rod and collected into the collection box. In addition, a filter screen and a fine filter paper are provided to respectively perform rough filtering and fine filtering on the cutting fluid, effectively removing impurity particles of different sizes in the cutting fluid, avoiding problems such as increased grinding wheel wear, obvious workpiece thermal deformation, and nozzle blockage caused by impurities mixed in the cutting fluid, reducing the equipment failure rate and maintenance cost, ensuring the smooth progress of the grinding process, and improving the machining accuracy and surface quality; (2) By providing a liquid spraying mechanism, accurate matching between the spraying range of the cutting fluid and the pitch of the to-be-machined ball screw is realized. Using the structural design of the spiral elastic tube and the telescopic rod, the spiral pitch of the spiral elastic tube can be flexibly adjusted according to the pitch specification of the to-be-machined ball screw, ensuring that the cutting fluid can evenly cover the entire machining area, avoiding spraying dead angles. At the same time, the nozzle pitch is reasonably set, which not only ensures that the cutting fluid is sprayed on the workpiece surface with an appropriate density, but also avoids waste and mutual interference of the cutting fluid, effectively reducing the grinding temperature, reducing tool wear, improving the quality and accuracy of the machining surface, and achieving a better machining effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the embodiment of the present invention; Figure 2 is the side view of the overall structure of the embodiment of the present invention; Figure 3Partial schematic view of the grinding mechanism according to an embodiment of the present invention; Figure 4 Cross-sectional view of the filtering mechanism according to an embodiment of the present invention; Figure 5 Enlarged view of area A according to an embodiment of the present invention; Figure 6 Cross-sectional view of the power mechanism according to an embodiment of the present invention; In the figure: 1, bed body; 11, sliding groove; 2, moving carriage; 3, grinding mechanism; 31, grinding frame; 32, grinding wheel; 33, power mechanism; 331, central shaft; 332, coupling; 333, grinding motor; 334, motor sleeve; 34, cutting fluid tank; 35, support plate; 351, roller; 4, filtering mechanism; 41, rotating inner cylinder; 411, slag passing hole; 412, conveying wheel; 413, conveyor belt; 42, slag collecting outer cylinder; 43, connecting shell; 431, rotating ring; 432, connecting ball; 433, hanging disc; 434, blade; 435, magnetic bar; 436, collecting box; 44, filter screen; 45, fine filter paper; 5, liquid spraying mechanism; 51, connecting pipe; 52, spiral elastic tube; 53, spray head; 54, first support; 55, second support; 56, telescopic rod; 6, workpiece headstock; 7, workpiece tailstock; 8, to-be-machined ball screw; 9, cooling element. Detailed description of the specific implementation

[0016] The technical solution of the present invention will be further described in detail and non-limitingly below in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0017] An embodiment of the present invention provides a ball screw shaft processing device, as Figure 1 shown. The ball screw shaft processing device includes a bed body 1. A moving carriage 2 is slidably connected to the bed body 1. A grinding mechanism 3 is fixedly arranged on the moving carriage 2. Filtering mechanisms 4 are arranged on both opposite sides of the grinding mechanism 3. A liquid spraying mechanism 5 is communicated with each filtering mechanism 4. The bed body 1 serves as the basic support structure of the entire device. The moving carriage 2 can perform precise linear movement on the bed body 1. The moving carriage 2 drives the grinding mechanism 3 to grind the ball screw shaft along a predetermined trajectory. The main function of the filtering mechanism 4 is to filter the cutting fluid and remove the metal particles and impurities mixed in the cutting fluid. The liquid spraying mechanism 5 is responsible for evenly spraying the filtered cutting fluid onto the grinding area to cool and lubricate the grinding parts, improving the grinding efficiency and quality.

[0018] AsFigure 3 As shown, the grinding mechanism 3 includes a grinding frame 31 fixedly arranged above the moving platen 2. A grinding wheel 32 is rotatably connected to the center of the upper section of the grinding frame 31. A power mechanism 33 is arranged on one side of the upper section of the grinding frame 31. A cooling element 9 is arranged on the side of the grinding frame 31 adjacent to the surface where the power mechanism 33 is located. Above the cooling element 9, there is a cutting fluid tank 34.

[0019] The grinding wheel 32, as the core component directly participating in the grinding process of the ball screw shaft, requires careful consideration in terms of material selection and manufacturing for wear resistance and grinding efficiency to ensure a sharp cutting edge and reduced wear under continuous high-speed cutting, while achieving efficient grinding. The power mechanism 33 is the key component for driving the rotation of the grinding wheel 32. Whether its performance is stable directly affects the rotational speed accuracy and running smoothness of the grinding wheel 32, thereby affecting the grinding quality. The cutting fluid tank 34 is used to store cutting fluid. Cutting fluid has multiple functions such as cooling, lubrication, cleaning, and rust prevention during grinding, and is an important medium for ensuring machining accuracy and workpiece quality. The cooling element 9 uses a semiconductor refrigeration device, which can accurately and efficiently cool the cutting fluid, ensuring that the cutting fluid flowing out of the cutting fluid tank 34 is always in a low-temperature state, so as to absorb heat more quickly during the grinding process, greatly enhancing the cooling effect and reducing the risk of wear of the grinding wheel 32 and thermal deformation of the workpiece.

[0020] As Figure 4 shown, the filtering mechanism 4 includes two rotating inner cylinders 41 respectively arranged on opposite sides of the cutting fluid tank 34. Each rotating inner cylinder 41 is in communication with the inside of the cutting fluid tank 34, and each rotating inner cylinder 41 is rotatably engaged with the cutting fluid tank 34. A number of slag passing holes 411 are opened on each rotating inner cylinder 41. A slag collecting outer cylinder 42 is arranged outside each rotating inner cylinder 41. The slag collecting outer cylinder 42 on the same side is rotatably engaged with the rotating inner cylinder 41 and is located outside the slag passing holes 411. One end of each slag collecting outer cylinder 42 away from the cutting fluid tank 34 is connected to a communicating shell 43. A rotating ring 431 is arranged inside each communicating shell 43. A connecting ball 432 is rotatably connected to each rotating ring 431. A hanging plate 433 is connected below each connecting ball 432. A number of blades 434 and a number of magnetic rods 435 are arranged below each hanging plate 433. A collecting box 436 is arranged on one side of the rotating ring 431 below the magnetic rods 435.

[0021] During the operation of the filtering mechanism 4, when the rotating inner cylinder 41 starts to rotate, due to the action of centrifugal force, the impurities mixed in the cutting fluid will be subjected to an outward centrifugal force. At this time, the impurities in the cutting fluid will be thrown out into the slag collecting outer cylinder 42 through a plurality of slag passing holes 411 formed in the rotating inner cylinder 41. As the filtering work continues, a certain amount of impurities will gradually accumulate in the slag collecting outer cylinder 42. After using for a period of time, the operator can remove the slag collecting outer cylinder 42 from the rotating inner cylinder 41, clean the impurities accumulated inside it, and reinstall it after cleaning. The reinstalled slag collecting outer cylinder 42 is fixed relative to the cutting fluid tank 34 to ensure the stable operation of the entire filtering mechanism 4.

[0022] When the cutting fluid flows from the slag collecting outer cylinder 42 into the connecting shell 43, the flow of the cutting fluid will generate an impact force on the blades 434. Under the action of the impact force, the blades 434 will rotate and drive the magnetic rod 435 to rotate together through the hanging disc 433. The magnetic rod 435 has magnetism and can adsorb ferromagnetic impurities in the cutting fluid during rotation. With the continuous flow of the cutting fluid, the continuous rotation of the magnetic rod 435 and the influence of gravity, the impurities adsorbed on the magnetic rod 435 will gradually move along the surface of the magnetic rod 435 and finally fall into the collecting box 436 provided on one side below the magnetic rod 435 on the rotating ring 431, realizing the effective collection of ferromagnetic impurities.

[0023] A filter screen 44 is provided at one end of the rotating inner cylinder 41 close to the cutting fluid tank 34, and a fine filter paper 45 is provided at one end of the connecting shell 43 far from the cutting fluid tank 34.

[0024] When the cutting fluid just enters the filtering mechanism 4, the filter screen 44 provided at one end of the rotating inner cylinder 41 close to the cutting fluid tank 34 will conduct a rough filtration on the cutting fluid, initially intercepting larger particle impurities in the cutting fluid to prevent these large particle impurities from entering the subsequent filtering links and affecting the filtering effect and the normal operation of the equipment. The cutting fluid after rough filtration will continue to flow. When passing through the fine filter paper 45 provided at one end of the connecting shell 43 far from the cutting fluid tank 34, the fine filter paper 45 will conduct a fine filtration on the cutting fluid, further removing tiny impurity particles in the cutting fluid, and finally allowing the cutting fluid after fine filtration to flow out for subsequent grinding processing.

[0025] In some preferred embodiments, such as Figure 1As shown, a workpiece headstock 6 and a workpiece tailstock 7 are also fixedly arranged on the bed body 1. The workpiece headstock 6 and the workpiece tailstock 7 are opposite to each other. A ball screw 8 to be machined is jointly clamped and connected between the workpiece headstock 6 and the workpiece tailstock 7. The ball screw 8 to be machined is parallel to the sliding trajectory of the moving carriage 2. Specifically, both ends of the ball screw 8 to be machined are accurately clamped and connected by the workpiece headstock 6 and the workpiece tailstock 7 respectively, ensuring that the ball screw 8 to be machined remains stable during the machining process.

[0026] In some preferred embodiments, as Figures 3 to 5 shown, the liquid spraying mechanism 5 includes a connecting pipe 51. One end of the connecting pipe 51 is connected to the inside of the connecting shell 43. The other end of each connecting pipe 51 is connected with a spiral elastic tube 52. The spiral elastic tube 52 is an elastic spiral structure with a liquid flow channel inside. A number of spray nozzles 53 are evenly arranged on the spiral elastic tube 52. Both ends of the spiral elastic tube 52 are respectively fixedly connected with a first bracket 54 and a second bracket 55. The first bracket 54 is fixedly arranged on the grinding frame 31. An expansion link 56 is also connected between the first bracket 54 and the second bracket 55.

[0027] During the grinding process, the cutting fluid first flows out from the connecting shell 43 and is smoothly input into the inside of the spiral elastic tube 52 by means of the connecting pipe 51. Since a special liquid flow channel is provided inside the spiral elastic tube 52, the cutting fluid can flow stably along this flow channel and is finally evenly sprayed out through a number of the spray nozzles 53 evenly distributed on the spiral elastic tube 52, providing necessary cooling and lubrication for the grinding area.

[0028] Meanwhile, the expansion link 56 can be flexibly adjusted according to the actual pitch specification of the ball screw 8 to be machined. When it is necessary to change the spraying range of the cutting fluid to match different pitches, the expansion link 56 performs a telescopic action. When the expansion link 56 contracts, it will pull the second bracket 55 to move towards the first bracket 54. Since the spiral elastic tube 52 has elasticity, under the pulling of the second bracket 55, its spiral pitch will gradually become smaller. At this time, the cutting fluid sprayed out from the spray nozzles 53 will more concentratedly cover a local area of the ball screw 8 to be machined, which is applicable to the machining of ball screws with smaller pitches, ensuring that the screw grooves with smaller pitches are fully cooled and lubricated. On the contrary, when the expansion link 56 extends, it will push the second bracket 55 away from the first bracket 54, causing the spiral pitch of the spiral elastic tube 52 to increase. In this way, the spraying range of the cutting fluid will be correspondingly enlarged, and it can better cover the surface of the ball screw 8 to be machined with a larger pitch, avoiding spraying dead angles.

[0029] By dynamically adjusting the helix pitch of the spiral elastic tube 52 in this way, the spraying range of the cutting fluid can be precisely matched with the pitch of the ball screw 8 to be machined, thereby ensuring the uniform distribution of the cutting fluid in the grinding area, effectively reducing the grinding temperature, reducing tool wear, improving the quality and accuracy of the machined surface, and ultimately achieving a better machining effect.

[0030] In some preferred embodiments, such as Figure 6 As shown, a central shaft 331 penetrates through the center of the grinding wheel 32. One end of the central shaft 331 passes through the grinding frame 31 and is connected to one end of a coupling 332. The other end of the coupling 332 is connected to a grinding motor 333. The grinding motor 333 is fixedly arranged inside a motor sleeve 334, and the motor sleeve 334 is fixedly arranged on the grinding frame 31. The grinding motor 333 is used to provide power for the grinding wheel 32.

[0031] In some preferred embodiments, such as Figure 3 As shown, on both sides of the filter mechanism 4 provided on the cutting fluid tank 34, there are also transmission wheels 412. The transmission wheels 412 are connected to a power source, and a conveyor belt 413 is commonly connected between the transmission wheels 412 and the rotating inner cylinder 41. The power source drives the transmission wheels 412 to rotate. Since the transmission wheels 412 and the rotating inner cylinder 41 are tightly connected through the conveyor belt 413, an effective power transmission system is formed. The conveyor belt 413 is made of a high-strength and wear-resistant material, which can withstand large tensile forces and frictional forces, ensuring the stability and reliability of power transmission. When the transmission wheels 412 rotate, the frictional force between their surfaces and the conveyor belt 413 will drive the conveyor belt 413 to move synchronously. And the conveyor belt 413 is also connected to the rotating inner cylinder 41. Driven by the conveyor belt 413, the rotating inner cylinder 41 will rotate accordingly.

[0032] In some preferred embodiments, such as Figure 1 As shown, a sliding groove 11 is formed on the bed body 1, and the moving support plate 2 is slidably matched with the sliding groove 11.

[0033] In some preferred embodiments, such as Figure 2 As shown, a water pump is also arranged inside the cutting fluid tank 34. A support plate 35 is fixedly arranged below the cooling element 9 on the cutting fluid tank 34. One side of the support plate 35 away from the cutting fluid tank 34 is rotatably connected with a roller 351. The support plate 35 is used to place and support the cooling element 9 and the cutting fluid tank 34, and the roller 351 is beneficial for the support plate 35 to drive the cooling element 9 and the cutting fluid tank 34 to slide along with the moving support plate 2.

[0034] In some preferred embodiments, driven by the telescopic rod 56, the pitch of the spiral elastic tube 52 is ensured to be 1.5 - 2 times the pitch to be machined on the to-be-machined ball screw 8, which can ensure that the cutting fluid can cover the entire machining area of the to-be-machined ball screw 8, avoid the occurrence of spraying dead angles, and thus ensure the cooling and lubrication effects during the machining process. The distance between the nozzles 53 is 1 / 2 to 2 / 3 of the pitch to be machined on the to-be-machined ball screw 8, which can not only ensure that the cutting fluid is sprayed on the surface of the to-be-machined ball screw 8 with an appropriate density, but also prevent the waste or mutual interference of the cutting fluid due to the overcrowding of the nozzles 53.

[0035] In some preferred embodiments, the mass of the collection box 436 is greater than the sum of the masses of the connecting ball 432, the hanging plate 433, the blade 434, and the magnetic rod 435, so as to ensure that the collection box 436 is always located at the bottom of the rotating ring 431. Based on the principles of physical mechanics, during the rotation of the rotating ring 431, due to the continuous existence of gravity and its direction being vertically downward, the collection box 436 with a larger mass will be more affected by gravity. When the angle of the communication shell 43 deviates, according to the motion law of an object in a gravitational field, the greater the mass, the more obvious the effect of gravity under the same gravitational acceleration. Therefore, the collection box 436 always relies on its own greater gravity advantage. When the rotating ring 431 rotates, even if the angle of the communication shell 43 changes, the collection box 436 will always be located at the bottom of the rotating ring 431 due to gravity, thus stably performing its collection function.

[0036] In the above embodiments, through the coordinated operation of the bed 1, the moving carriage 2, the grinding mechanism 3, the filtering mechanism 4, and the liquid spraying mechanism 5, the high-efficiency and precision grinding of the ball screw shaft is achieved. The grinding wheel 32 in the grinding mechanism 3 rotates at a high speed driven by the power mechanism 33, and grinds the to-be-machined ball screw 8 clamped between the workpiece headstock 6 and the workpiece tailstock 7.

[0037] The core function of the filtering mechanism 4 is to efficiently filter the cutting fluid. When the rotating inner cylinder 41 rotates driven by a power source, the cutting fluid is thrown into the slag collection outer cylinder 42 through the slag passing holes 411 on the rotating inner cylinder 41 under the action of centrifugal force, achieving preliminary solid-liquid separation. The impurities accumulated in the slag collection outer cylinder 42 can be cleaned regularly. When the cutting fluid flows from the slag collection outer cylinder 42 into the connecting shell 43, the impact force causes the blades 434 to drive the magnetic rod 435 to rotate. The magnetic rod 435 adsorbs ferromagnetic impurities in the cutting fluid and guides the adsorbed impurities into the collection box 436 under the action of gravity. The filter screen 44 located at the end of the rotating inner cylinder 41 near the cutting fluid tank 34 roughly filters the cutting fluid, intercepting larger particle impurities, while the fine filter paper 45 located at the far end of the connecting shell 43 finely filters the cutting fluid, removing tiny impurity particles. Finally, the clean cutting fluid after multiple filtrations flows out of the filtering mechanism 4, providing guarantee for subsequent grinding processing.

[0038] The liquid spraying mechanism 5 transports the filtered cutting fluid to the spiral elastic tube 52 through the connecting pipe 51, and the spray heads 53 evenly distributed on the spiral elastic tube 52 spray the cutting fluid onto the grinding area. The telescopic rod 56 can adjust the spiral pitch of the spiral elastic tube 52 according to the pitch specification of the to-be-processed ball screw 8, making it 1.5 - 2 times the spiral pitch to be processed on the to-be-processed ball screw 8, ensuring that the cutting fluid covers the entire processing area and avoiding spraying dead angles. At the same time, the spacing of the spray heads 53 is designed to be 1 / 2 to 2 / 3 of the spiral pitch to be processed on the to-be-processed ball screw 8, ensuring the spraying density of the cutting fluid and avoiding waste and interference.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ball screw shaft processing device, including a bed, characterized in that, A moving platen is slidably connected to the bed body. A grinding mechanism is fixedly arranged on the moving platen. Filtering mechanisms are arranged on both opposite sides of the grinding mechanism. A liquid spraying mechanism is communicated with each filtering mechanism. The grinding mechanism includes a grinding frame fixedly arranged above the moving platen. A grinding wheel is rotatably connected to the center of the upper section of the grinding frame. A power mechanism is arranged on one side of the upper section of the grinding frame. A cooling element is arranged on the side of the grinding frame adjacent to the surface where the power mechanism is located. A cutting fluid tank is arranged above the cooling element. The filtering mechanism includes two rotating inner cylinders respectively arranged on both opposite sides of the cutting fluid tank. Each rotating inner cylinder is communicated with the inside of the cutting fluid tank, and each rotating inner cylinder is rotatably matched with the cutting fluid tank. A plurality of slag passing holes are formed in each rotating inner cylinder. A slag collecting outer cylinder is arranged outside each rotating inner cylinder. The slag collecting outer cylinder on the same side is rotatably matched with the rotating inner cylinder and is located outside the slag passing holes. One end of each slag collecting outer cylinder far away from the cutting fluid tank is connected with a communicating shell. A rotating ring is arranged inside each communicating shell. A connecting ball is rotatably connected to each rotating ring. A hanging disc is connected below each connecting ball. A plurality of blades and a plurality of magnetic rods are arranged below each hanging disc. A collecting box is arranged on one side of the rotating ring below the magnetic rod. A filter screen is arranged at one end of the rotating inner cylinder close to the cutting fluid tank. A fine filter paper is arranged at one end of the communicating shell far away from the cutting fluid tank.

2. The ball screw shaft processing equipment according to claim 1, characterized in that, A workpiece headstock and a workpiece tailstock are also fixedly arranged on the bed body. The workpiece headstock and the workpiece tailstock are opposite to each other. A to-be-machined ball screw is jointly clamped and connected between the workpiece headstock and the workpiece tailstock. The to-be-machined ball screw is parallel to the sliding track of the moving platen.

3. The ball screw shaft processing equipment according to claim 2, characterized in that The liquid spraying mechanism includes a communicating pipe. One end of the communicating pipe is communicated with the inside of the communicating shell. The other end of each communicating pipe is connected with a spiral elastic pipe. The spiral elastic pipe is an elastic spiral structure with a liquid flow channel inside. A plurality of spray heads are uniformly arranged on the spiral elastic pipe. Two ends of the spiral elastic pipe are respectively fixedly connected with a first bracket and a second bracket. The first bracket is fixedly arranged on the grinding frame. A telescopic rod is also connected between the first bracket and the second bracket.

4. A ball screw shaft processing device according to claim 3, characterized in that, A central shaft penetrates through the center of the grinding wheel. One end of the central shaft passes through the grinding frame and is connected with one end of a coupling. The other end of the coupling is connected with a grinding motor. The grinding motor is fixedly arranged inside a motor sleeve. The motor sleeve is fixedly arranged on the grinding frame.

5. The processing equipment for a ball screw shaft according to claim 4, characterized in that Conveyor wheels are arranged on both sides of the cutting fluid tank where the filtering mechanism is arranged. The conveyor wheels are connected with a power source. A conveyor belt is jointly connected between the conveyor wheels and the rotating inner cylinders.

6. The processing equipment for a ball screw shaft according to claim 5, characterized in that, A sliding groove is formed in the bed body. The moving platen is slidably matched with the sliding groove.

7. A ball screw shaft processing device according to claim 6, characterized in that, A water pump is further arranged in the cutting fluid tank. A support plate is fixedly arranged on the cutting fluid tank below the cooling element, and a roller is rotatably connected to one side of the support plate away from the cutting fluid tank.

8. A ball screw shaft processing device according to claim 7, characterized in that, Driven by the telescopic rod, the spiral pitch of the spiral elastic tube is ensured to be 1.5 - 2 times the spiral pitch to be machined on the to-be-machined ball screw, and the nozzle pitch is 1 / 2 to 2 / 3 of the spiral pitch to be machined on the to-be-machined ball screw.

9. A ball screw shaft processing device according to claim 8, characterized in that, The mass of the collection box is greater than the sum of the masses of the connecting ball, the hanging disc, the blade and the magnetic rod, so as to ensure that the collection box is always located at the bottom of the rotating ring.

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