A processing device for processing ball screw

Abstract

The present invention relates to the technical field of grinding equipment, and specifically to a processing equipment for processing a ball screw, wherein a grinding assembly comprises a left grinding part and a right grinding part, wherein the left grinding part and the right grinding part are butted to form a grinding channel, wherein the left grinding part and the right grinding part are respectively used to grind the threaded slideway on the ball screw from both sides of the ball screw, wherein the left grinding part and the right grinding part both comprise a housing and a grinding rod, wherein a lubricating liquid cavity for injecting lubricating liquid is provided in the housing, wherein the grinding rod is rotatably installed in the housing and passes through the lubricating liquid cavity, wherein one end of the grinding rod is connected to a rotating motor for driving the grinding rod to rotate, wherein an arc groove for accommodating the ball screw is provided on the housing, wherein the bottom of the arc groove is provided with an opening connected to the lubricating liquid cavity, wherein a radial part of the grinding rod is exposed from the opening to grind the threaded slideway of the ball screw. The present invention solves the technical problems in the prior art that the lubricating liquid is easy to splash and the ball screw is easy to deviate axially.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, and in particular to a processing equipment for processing a ball screw. Background Art

[0002] Existing ball screw processing equipment usually uses a customized grinding wheel to grind the spiral slideway of the ball screw. During grinding, the cooling lubricant is easy to splash and flow irregularly, making it difficult to remove chips and reducing the grinding accuracy. In addition, since the grinding force of the existing grinding equipment is difficult to control, it is easy to cause the ball screw to deviate axially, resulting in inconsistent grinding force at different positions. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention proposes a processing device for processing a ball screw to solve the technical problems in the prior art that chip removal is difficult and the screw is prone to axial deviation resulting in inconsistent grinding force.

[0004] A processing device for processing a ball screw of the present invention adopts the following technical solution:

[0005] A processing equipment for processing a ball screw, comprising a screw clamping assembly, a screw rotation drive assembly and a grinding assembly, the grinding assembly comprising a left grinding part and a right grinding part, the left grinding part and the right grinding part are butted together to form a grinding channel for the ball screw to pass through, the left grinding part and the right grinding part are respectively used to grind the threaded slideway on the ball screw from both sides of the ball screw, the left grinding part and the right grinding part both comprise an outer shell and a grinding rod, a lubricating fluid chamber for injecting lubricating fluid is provided in the outer shell, the grinding rod is rotatably installed in the outer shell and passes through the lubricating fluid chamber, one end of the grinding rod is connected to a rotating motor for driving the grinding rod to rotate, an arc groove for accommodating the ball screw is provided on the outer shell, the bottom of the arc groove is provided with an opening connected to the lubricating fluid chamber, a radial portion of the grinding rod is exposed through the opening to grind the threaded slideway of the ball screw.

[0006] Furthermore, a guide plate is provided in the lubricating fluid chamber, and the guide plate is spirally arranged along the circumference of the grinding rod. The guide plate is used to guide the grinding chips in the lubricating fluid to move toward the end of the grinding rod to avoid the grinding position of the grinding rod and the ball screw.

[0007] Furthermore, two guide plates are symmetrically arranged in each lubricating fluid chamber, the spiral directions of the two guide plates are opposite, and the two guide plates are respectively used to guide the grinding chips at the grinding position of the grinding rod and the ball screw to the two ends of the grinding rod.

[0008] Furthermore, the left grinding part and the right grinding part also include a stirring wheel, which is installed on the grinding rod and cooperates with the grinding rod to stop rotation. The grinding rod can drive the stirring wheel to rotate synchronously, and the rotation of the stirring wheel can drive the lubricating fluid in the lubricating fluid chamber to rotate along the rotation direction of the grinding rod.

[0009] Furthermore, each polishing rod is provided with two stirring wheels, and the two stirring wheels are symmetrically arranged at two ends of the polishing rod.

[0010] Furthermore, the stirring wheel includes a first ring body and a second ring body, the first ring body is sleeved outside the polishing rod, and a spline is installed between the first ring body and the polishing rod, the second ring body is connected to the first ring body, and the second ring body is located in the lubricating fluid cavity, and the second ring body is provided with stirring blades.

[0011] Furthermore, connecting plates are respectively provided at the upper and lower ends of the shell, and connecting holes are opened on the connecting plates, and the shells of the left grinding part and the right grinding part are connected by fastening bolts installed in the connecting holes; the grinding assembly also includes a sealing assembly, and the sealing assembly includes a first seal and a second seal which are symmetrically arranged in the upper and lower parts, and the first seal and the second seal both include a sealing plate and a sealing strip fixed on the sealing plate, and the two sealing plates are respectively clamped between the connecting plates of the two shells, and the sealing strip is arc-shaped, and the sealing strip is used to fit with the inner wall of the arc groove and the threaded slide of the ball screw. When the ball screw is ground, the sealing strip extends into the threaded slide of the ball screw to prevent the lubricating fluid in the lubricating fluid chamber from flowing out through the threaded slide.

[0012] Furthermore, the polishing rod is movably arranged in the housing along the axial direction, and a telescopic mechanism is provided on the housing, and the telescopic mechanism is used to drive the polishing rod to move along the axial direction to change the contact position between the polishing rod and the ball screw.

[0013] Furthermore, a mounting frame is provided on the shell, the mounting frame includes a mounting plate and a connecting column, the mounting plate is connected to the shell via the connecting column, the telescopic mechanism is mounted on the mounting plate, the telescopic mechanism has a telescopic rod, and the telescopic rod is connected to the rotating motor.

[0014] Furthermore, the two grinding rods are both tilted and arranged in opposite directions, and the two grinding rods rotate in the same direction.

[0015] The beneficial effects of the present invention are as follows: a processing device for processing a ball screw of the present invention can grind on both sides of the ball screw at the same time through the left grinding part and the right grinding part that are connected to each other on the left and right sides, so that both sides of the ball screw are subjected to the same grinding force, so that the ball screw is not prone to axial deviation, and the grinding force at different grinding positions is ensured to be the same, and the grinding uniformity is ensured. At the same time, the present invention sets a lubricating liquid cavity inside the outer shell of the left and right grinding parts, and the lubricating liquid cavity is hidden in the outer shell and connected to the arc groove of the outer shell, so that the lubricating liquid is not prone to splashing during grinding, and because the lubricating liquid in the lubricating liquid cavity will flow regularly with the rotation of the grinding rod, it can promote the grinding chips generated by grinding to move in the direction away from the grinding position, reduce the influence of the grinding chips on the grinding, and help improve the grinding accuracy.

[0016] In addition, by providing a guide plate and a stirring wheel in the lubricating fluid chamber, the grinding chips in the lubricating fluid can be urged to move along the guide plate toward the end of the grinding rod, that is, move away from the grinding position of the grinding rod and the ball screw, thereby reducing the impact of the grinding chips on grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0018] Figure 1 A schematic diagram of the cooperation between a processing device for processing a ball screw and the ball screw during use according to the present invention;

[0019] Figure 2 It is an overall exploded view of a processing device for processing a ball screw according to the present invention;

[0020] Figure 3 It is a schematic diagram of the overall structure of a sealing assembly in a processing device for processing a ball screw according to the present invention;

[0021] Figure 4 It is an exploded view of the left grinding part of a processing device for processing a ball screw according to the present invention;

[0022] Figure 5 It is a front view of the left grinding part of a processing device for processing a ball screw according to the present invention;

[0023] Figure 6 for Figure 5 Schematic diagram of the AA section;

[0024] Figure 7 for Figure 5 Left view of

[0025] Figure 8 for Figure 7 Schematic diagram of the cross section in the middle BB direction;

[0026] Fig. 9 It is a structural schematic diagram of a housing in a processing device for processing a ball screw according to the present invention;

[0027] Fig.10 It is a cross-sectional schematic diagram of a housing in a processing device for processing a ball screw according to the present invention;

[0028] Fig.11 It is a schematic structural diagram of two stirring wheels in a processing device for processing a ball screw according to the present invention;

[0029] Fig.12 It is a schematic diagram of a grinding rod, a rotating motor and a telescopic cylinder in a processing device for processing a ball screw according to the present invention;

[0030] In the figure: 100, ball screw; 200, grinding assembly; 210, housing; 211, connecting plate; 212, rotating hole; 213, lubricating fluid chamber; 214, guide plate; 215, injection hole; 220, grinding mechanism; 221, mounting plate; 2211, connecting column; 222, telescopic mechanism; 223, rotating motor; 224, grinding rod; 2241, spline; 230, stirring wheel; 231, first ring body; 2311, spline groove; 232, second ring body; 233, stirring blade; 300, sealing assembly; 310, sealing plate; 320, sealing strip; 400, fastening bolt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] An embodiment of a processing device for processing a ball screw according to the present invention is as follows: Figures 1 to 12As shown, the processing equipment for processing ball screws includes a screw clamping assembly, a screw rotation driving assembly and a grinding assembly 200 (the screw clamping assembly and the screw rotation driving assembly are both existing structures, and are not shown in the drawings). The screw clamping assembly is used to clamp the ball screw 100 to be ground. The structure of the screw clamping assembly is an existing structure, specifically a three-jaw chuck structure. When in use, the three-jaw chuck clamps one end of the ball screw 100. The screw rotation driving assembly is used to drive the screw clamping assembly to rotate with the ball screw 100. The screw rotation driving assembly is an existing structure, specifically a motor connected to the three-jaw chuck. The grinding assembly 200 includes a left grinding part and a right grinding part, which are connected to form a grinding channel for the ball screw 100 to pass through. In the process of the ball screw 100 passing through the grinding channel axially, the left grinding part and the right grinding part grind the threaded slide on the ball screw 100 from both sides of the ball screw 100 respectively, so that both sides of the ball screw 100 can be subjected to the same grinding force, so that the ball screw 100 is not prone to axial deviation, ensuring that the grinding force at different grinding positions is the same, and ensuring grinding uniformity.

[0033] The left grinding part and the right grinding part have the same structure, both including a housing 210 and a grinding rod 224. The housing 210 is provided with a lubricating liquid chamber 213 for injecting lubricating liquid. The housing 210 is provided with a liquid injection hole 215 connected with the lubricating liquid chamber 213 for injecting lubricating liquid into the lubricating liquid chamber 213. The grinding rod 224 is rotatably mounted in the housing 210 and passes through the lubricating liquid chamber 213. One end of the grinding rod 224 is connected to a rotating motor 223 for driving the grinding rod 224 to rotate. Compared with the grinding wheel in the prior art, the grinding rod 224 in the present invention has a larger axial length. When in use, any position on the axial direction of the grinding rod 224 can be selected for grinding, and the service life is longer. In this embodiment, the two grinding rods 224 are both inclined and in opposite directions. The two grinding rods 224 rotate in the same direction. The inclination angles of the two grinding rods 224 match the helical angles of the threaded slideway of the ball screw 100, so that the outer peripheral surface of the grinding rod 224 can fit the inner wall of the threaded slideway of the ball screw 100. Since the two grinding rods 224 rotate in the same direction, the grinding directions of the grinding rods 224 on the threaded slideway are opposite, that is, the two grinding rods 224 apply friction forces to both sides of the threaded slideway respectively, which can further ensure that the forces acting on the ball screw 100 are balanced and prevent the ball screw 100 from deflecting.

[0034] The housing 210 is provided with an arc groove for accommodating the ball screw 100, and the arc grooves on the two housings 210 are combined to form a grinding channel, and the grinding channel matches the ball screw 100. The bottom of the arc groove is provided with an opening connected to the lubricating liquid chamber 213, and a radial portion of the grinding rod 224 is exposed from the opening to grind the threaded slideway of the ball screw 100, and a radial portion of the grinding rod 224 is located in the lubricating liquid chamber 213 and surrounded by the lubricating liquid.

[0035] A guide plate 214 is provided in the lubricating fluid chamber 213. The guide plate 214 is arranged along the circumferential spiral of the grinding rod 224. The guide plate 214 is used to guide the grinding chips in the lubricating fluid to move toward the end of the grinding rod 224 to avoid the grinding position of the grinding rod 224 and the ball screw 100. In this embodiment, the guide plate 214 is a mesh plate structure, and the grinding chips cannot pass through the mesh holes on the guide plate 214. Two guide plates 214 are symmetrically arranged in each lubricating fluid chamber 213, and the spiral directions of the two guide plates 214 are opposite. The two guide plates 214 are respectively used to guide the grinding chips at the grinding position of the grinding rod 224 and the ball screw 100 to the two ends of the grinding rod 224. At the same time, the guide plate 214 is close to the outer wall of the grinding rod 224, and the guide plate 214 can help the grinding rod 224 to scrape off the adhered grinding chips.

[0036] In this embodiment, the left grinding part and the right grinding part further include a stirring wheel 230, and two stirring wheels 230 are respectively provided on each grinding rod 224, and the two stirring wheels 230 are respectively symmetrically arranged at the upper and lower ends of the grinding rod 224. The stirring wheel 230 is installed on the grinding rod 224 and is anti-rotationally matched with the grinding rod 224. In this embodiment, the stirring wheel 230 includes a first ring body 231 and a second ring body 232, the first ring body 231 is sleeved outside the grinding rod 224, and a spline 2241 is installed between the first ring body 231 and the grinding rod 224 to achieve anti-rotation cooperation between the stirring wheel 230 and the grinding rod 224, specifically, a spline 2241 is provided on the grinding rod 224, and a spline groove 2311 extending along the axial direction of the first ring body 231 is opened in the first ring body 231. The second ring body 232 is connected to the first ring body 231, and the second ring body 232 is located in the lubricating fluid chamber 213. The second ring body 232 is provided with a stirring blade 233. The grinding rod 224 can drive the stirring wheel 230 to rotate synchronously. The rotation of the stirring wheel 230 can drive the lubricating fluid in the lubricating fluid chamber 213 to rotate along the rotation direction of the grinding rod 224. Under the stirring effect of the stirring wheel 230 and the guiding effect of the guide plate 214, the grinding chips falling from the grinding position can be moved toward the stirring wheel 230 position and stored in the upper and lower end spaces of the lubricating fluid chamber 213. In this way, after the grinding of the ball screw 100 is completed, the grinding chips can be cleaned up.

[0037] In this embodiment, the upper and lower ends of the two housings 210 are respectively provided with rotating holes 212 connected to the lubricating fluid chamber 213, the grinding rod 224 and the stirring wheel 230 are both inserted into the rotating holes 212, and a clamping groove is formed between the first ring body 231 and the second ring body 232. After the first ring body 231 and the second ring body 232 are connected, the hole edge of the rotating hole 212 is clamped between the first ring body 231 and the second ring body 232 to prevent the stirring wheel 230 from moving along the axial direction of the grinding rod 224. In this embodiment, the grinding rod 224 is axially movable in the housing 210, and a telescopic mechanism 222 is provided on the housing 210. The telescopic mechanism 222 is a hydraulic telescopic cylinder. The telescopic mechanism 222 is used to drive the grinding rod 224 to move along the axial direction to change the contact position between the grinding rod 224 and the ball screw 100, and then the ball screw 100 is ground by using different axial positions of the grinding rod 224. In this embodiment, a mounting frame is provided on the housing 210, and the mounting frame includes a mounting plate 221 and a connecting column 2211. The mounting plate 221 is connected to the housing 210 through the connecting column 2211. The telescopic mechanism 222 is installed on the mounting plate 221. The telescopic mechanism 222 has a telescopic rod, and the telescopic rod is connected to the rotating motor 223. The telescopic mechanism 222, the rotating motor 223 and the grinding rod 224 constitute the grinding mechanism 220. It should be noted that when the grinding rod 224 moves axially, the axial position of the stirring wheel 230 remains unchanged under the blocking action of the housing 210, and because the grinding rod 224 is connected to the stirring wheel 230 through the spline 2241, the grinding rod 224 can still maintain the anti-rotation cooperation with the stirring wheel 230 when the grinding rod 224 moves axially.

[0038] In this embodiment, connecting plates 211 are respectively provided at the upper and lower ends of the shell 210, and connecting holes are opened on the connecting plates 211. The shells 210 of the left grinding part and the right grinding part are connected by fastening bolts 400 installed in the connecting holes; the grinding assembly 200 also includes a sealing assembly 300, and the sealing assembly 300 includes a first sealing member and a second sealing member symmetrically arranged up and down, and the first sealing member and the second sealing member both include a sealing plate 310 and a sealing strip 320 fixed on the sealing plate 310, and the two sealing plates 310 are respectively clamped between the connecting plates 211 of the two shells 210, and the sealing strip 320 is arc-shaped, and the sealing strip 320 is used to fit with the inner wall of the arc groove and the threaded slide of the ball screw 100. When the ball screw 100 is ground, the sealing strip 320 extends into the threaded slide of the ball screw 100 to prevent the lubricating fluid in the lubricating fluid chamber 213 from flowing out through the threaded slide.

[0039] In this embodiment, the processing equipment for processing the ball screw also includes a linear drive assembly (not shown in the figure). The linear drive assembly is an existing structure. The linear drive assembly specifically includes a linear slide rail and a driving component that drives the linear slide rail to move. The grinding assembly 200 is installed on the linear slide rail. During the grinding process, the linear slide rail and the rotating drive assembly move simultaneously. The linear slide rail drives the grinding assembly 200 to move along the axial direction of the ball screw 100. At the same time, as the rotating drive assembly drives the ball screw 100 to rotate, the grinding rods 224 on both sides are ground along the spiral direction of the threaded slide.

[0040] When the processing equipment for processing a ball screw of the present invention is in use: the rotating motor 223 rotates and drives the grinding rod 224 to rotate at the same time, and the grinding rod 224 rotates and drives the stirring wheel 230 to rotate at the same time, and the cooling lubricating liquid is injected into the lubricating liquid chamber 213 through the injection hole 215. The stirring wheel 230 rotates to make the lubricating liquid in the lubricating liquid chamber 213 rotate, thereby playing a role in guiding the grinding chips.

[0041] During grinding, first fix the ball screw 100 to be ground by the screw clamping assembly, then fix the two housings 210 and the sealing assembly 300 by the fastening bolts 400, then control the rotation motor 223 to rotate, and at the same time start the telescopic mechanism 222 to telescope, then start the linear drive assembly and the rotation drive assembly, so that the ball screw 100 rotates, and the grinding assembly 200 moves axially at the same time, and the grinding rods 224 in the grinding parts on both sides evenly grind the spiral slideway of the ball screw 100, and the grinding rods 224 on both sides rotate in the same direction and cut in opposite directions. The inner walls on both sides of the spiral raceway of the ball screw 100 are evenly ground.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing device for processing a ball screw, comprising a screw clamping assembly, a screw rotation driving assembly and a grinding assembly (200), characterized in that: The grinding assembly (200) comprises a left grinding part and a right grinding part. The left grinding part and the right grinding part are butted together to form a grinding channel for the ball screw (100) to pass through. The left grinding part and the right grinding part are respectively used to grind the threaded slideway on the ball screw (100) from both sides of the ball screw (100). The left grinding part and the right grinding part both comprise a housing (210) and a grinding rod (224). The two grinding rods (224) are both inclined and have opposite inclination directions. The two grinding rods (224) rotate in the same direction. The housing (210) is provided with a lubricating fluid chamber (213) for injecting lubricating fluid, the grinding rod (224) is rotatably mounted in the housing (210) and passes through the lubricating fluid chamber (213), one end of the grinding rod (224) is connected to a rotating motor (223) for driving the grinding rod (224) to rotate, the housing (210) is provided with an arc-shaped groove for accommodating the ball screw (100), the bottom of the arc-shaped groove is provided with an opening connected to the lubricating fluid chamber (213), a radial portion of the grinding rod (224) is exposed through the opening to contact the ball screw (100), and the grinding rod (224) is provided with a radial portion of the grinding rod (224) to contact the ball screw (100). The threaded slideway of the ball screw (100) is ground; a guide plate (214) is arranged in the lubricating fluid chamber (213); the guide plate (214) is arranged along the circumferential spiral of the grinding rod (224); the guide plate (214) is used to guide the grinding chips in the lubricating fluid to move toward the end of the grinding rod (224) to avoid the grinding position of the grinding rod (224) and the ball screw (100); two guide plates (214) are symmetrically arranged in each lubricating fluid chamber (213); the spiral directions of the two guide plates (214) are opposite, and the two guide plates (214) are arranged in opposite directions. 4) are used to guide the grinding chips at the grinding positions of the grinding rod (224) and the ball screw (100) towards the two ends of the grinding rod (224); the left grinding part and the right grinding part also include a stirring wheel (230), the stirring wheel (230) is installed on the grinding rod (224) and is engaged with the grinding rod (224) to prevent rotation, the grinding rod (224) can drive the stirring wheel (230) to rotate synchronously, and the rotation of the stirring wheel (230) can drive the lubricating fluid in the lubricating fluid chamber (213) to rotate along the rotation direction of the grinding rod (224).

2. The processing equipment for processing a ball screw according to claim 1, characterized in that: Two stirring wheels (230) are respectively arranged on each grinding rod (224), and the two stirring wheels (230) are respectively and symmetrically arranged at two ends of the grinding rod (224).

3. The processing equipment for processing a ball screw according to claim 1 or 2, characterized in that: The stirring wheel (230) comprises a first ring body (231) and a second ring body (232); the first ring body (231) is sleeved outside the grinding rod (224), and a spline (2241) is installed between the first ring body (231) and the grinding rod (224); the second ring body (232) is connected to the first ring body (231), and the second ring body (232) is located in the lubricating fluid cavity (213); and a stirring blade (233) is provided on the second ring body (232).

4. The processing equipment for processing a ball screw according to claim 1 or 2, characterized in that: The upper and lower ends of the housing (210) are respectively provided with connecting plates (211), the connecting plates (211) being provided with connecting holes, and the housings (210) of the left grinding part and the right grinding part are connected via fastening bolts (400) inserted into the connecting holes; the grinding assembly (200) further comprises a sealing assembly (300), the sealing assembly (300) comprising a first sealing member and a second sealing member symmetrically arranged in the upper and lower parts, the first sealing member and the second sealing member both comprising a sealing plate (310) and a sealing member fixed to the sealing plate. The sealing strip (320) on the plate (310) is respectively sandwiched between the connecting plates (211) of the two housings (210). The sealing strip (320) is arc-shaped. The sealing strip (320) is used to fit with the inner wall of the arc groove and the threaded slideway of the ball screw (100). When the ball screw (100) is polished, the sealing strip (320) extends into the threaded slideway of the ball screw (100) to prevent the lubricating fluid in the lubricating fluid chamber (213) from flowing out through the threaded slideway.

5. The processing equipment for processing a ball screw according to claim 1 or 2, characterized in that: The grinding rod (224) is movably arranged in the housing (210) along the axial direction. A telescopic mechanism (222) is provided on the housing (210). The telescopic mechanism (222) is used to drive the grinding rod (224) to move along the axial direction to change the contact position between the grinding rod (224) and the ball screw (100).

6. The processing equipment for processing a ball screw according to claim 5, characterized in that: The housing (210) is provided with a mounting frame, the mounting frame comprising a mounting plate (221) and a connecting column (2211), the mounting plate (221) being connected to the housing (210) via the connecting column (2211), the telescopic mechanism (222) being mounted on the mounting plate (221), the telescopic mechanism (222) having a telescopic rod, and the telescopic rod being connected to a rotating motor (223).

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