A grinding device for ball screw processing

Abstract

The present invention relates to the field of grinding equipment, in particular to a grinding device for ball screw processing, comprising a processing machine, a clamping unit arranged on the processing machine, and a grinding unit arranged on the clamping unit. The present invention uses four sets of grinding wheels to abut the ball screw, so that when the grinding wheel grinds the ball screw, the overall force balance of the ground part of the ball screw is maintained, effectively suppressing the slight deformation of the ball screw, and ensuring the overall roundness of the ball screw. When the clamping unit drives the ball screw to rotate, the pneumatic push rod drives the grinding unit as a whole to move back and forth on the ball screw, and the grinding wheel is used to grind the outer wall, and at the same time, the thread grinding tool is used to grind the thread groove back and forth. While ensuring the roundness of the ball screw, the thread groove is made smoother, the transmission efficiency is improved, and the transmission resistance is reduced. Under the premise of ensuring the roundness of the ball screw, all-round grinding of the outer wall and the thread groove is achieved.

Description

Technical Field

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

[0002] A ball screw is a transmission device that converts rotational motion into linear motion and is widely used in many precision machinery and automation equipment.

[0003] In order to reduce the friction between the ball screw and the transmission components and improve the transmission efficiency, the ball screw usually needs to be ground to eliminate burrs and smooth the rough parts of the external thread of the ball screw. The grinding wheel is a commonly used grinding tool. When the ball screw is ground by the grinding wheel, in order to ensure the grinding accuracy, the outer wall and thread groove of the grinding wheel ball screw need to be repeatedly corrected. When the existing grinding wheel is used to grind the ball screw, the force at the contact point between the ball screw and the grinding wheel is prone to be uneven relative to the entire ball screw, which affects the overall roundness of the ball screw. Summary of the Invention

[0004] The present invention is proposed in view of the problem that when the existing grinding wheel in the above-mentioned or prior art is used to grind the ball screw, the force at the contact point between the ball screw and the grinding wheel is easily uneven relative to the entire ball screw, which affects the overall roundness of the ball screw.

[0005] Therefore, an object of the present invention is to provide a grinding device for ball screw machining.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a processing machine, a clamping unit arranged on the processing machine, and a grinding unit arranged on the clamping unit; the grinding unit comprises a support frame arranged on the processing machine, a grinding component 1 arranged on the support frame for grinding the outer wall of the ball screw, a grinding component 2 arranged on the grinding component 1 for grinding the thread groove of the ball screw, and a lubricating cooling pipe arranged on the grinding component 2 for lubricating and cooling the grinding part of the ball screw; the grinding component is provided with multiple groups of action points on the outer wall of a pair of ball screws, and the intersection of the action points of the multiple groups relative to the ball screw is the axis of the ball screw, and cooperates with the grinding component 2 to grind the ball screw, and then cooperates with the clamping unit and the support frame to drive the ball screw to rotate, thereby driving the grinding component 2 to perform all-round grinding on the thread groove; the grinding component 1 comprises an adjusting member arranged on the support frame, a grinding member 1 arranged on the adjusting member, and a lubricating cooling pipe arranged on the grinding component 2 for lubricating and cooling the grinding part of the ball screw; the grinding component is provided with multiple groups of action points on the outer wall of the ball screw, and the intersection of the action points generated by the multiple groups of action points relative to the ball screw is the axis of the ball screw, and the ball screw is ground by the grinding component 2, and then the ball screw is driven to rotate by the clamping unit and the support frame, thereby driving the grinding component 2 to grind the thread groove in all directions; the grinding component 1 comprises an adjusting member arranged on the support frame, a grinding member 1 arranged on the adjusting member, and a lubricating cooling pipe arranged on the grinding component 2 3. Grinding member 2; the adjusting member includes a fixed frame arranged on the support frame, a motor 2 arranged on the fixed frame, a screw arranged on the fixed frame and driven by the motor 2, and a sliding rod 3 arranged on the fixed frame; the grinding member 1 includes a movable plate arranged on the screw, a mounting plate arranged on the movable plate, a grinding wheel arranged on the mounting plate, and a motor 3 arranged on the mounting plate for driving the grinding wheel; two groups of grinding wheels are arranged on the mounting plate; the grinding member 2 has the same structure as the grinding member 1, and the grinding member 1 cooperates with the grinding member 2 to stably clamp the ball screw while keeping the ball screw uniformly stressed; the grinding assembly 2 includes a fixed block arranged on the fixed frame, an electric push rod arranged on the fixed block, and a grinding member 3 arranged on the driving end of the electric push rod; the grinding member 3 includes a connecting plate arranged on the driving end of the electric push rod, a connecting block arranged on the connecting plate, a threaded grinding tool arranged on the connecting block and cooperating with the thread on the ball screw, and a clamping groove arranged on the connecting plate and cooperating with the connecting block.

[0007] As a preferred solution of the grinding device for ball screw processing of the present invention, a pneumatic push rod and a sliding hole for cooperating with the pneumatic push rod are provided on the support frame, and a sliding groove for cooperating with the support frame is provided on the processing machine.

[0008] As a preferred solution of the grinding device for ball screw processing of the present invention, the movable plate is provided with a threaded hole and a sliding hole 2 respectively matching the screw rod and the sliding rod 3.

[0009] As a preferred solution of the grinding device for ball screw processing of the present invention, the clamping unit includes a fixed seat arranged on the processing machine, a claw plate arranged on the fixed seat, a motor 1 arranged on the fixed seat for driving the claw plate, and an abutment assembly arranged on the processing machine for cooperating with the claw plate; the abutment assembly includes a sliding seat arranged on the processing machine, a cylinder arranged on the processing machine for driving the sliding seat, a slide rod 1 arranged on the processing machine for the sliding seat to slide back and forth, and a rotating abutment block arranged on the sliding seat for cooperating with the ball screw; a sliding groove 2 cooperating with the slide rod 1 is provided on the processing machine.

[0010] The beneficial effects of the ball screw processing grinding device of the present invention are as follows: the present invention uses four sets of grinding wheels to abut the ball screw, so that when the grinding wheels grind the ball screw, the overall force balance of the ground part of the ball screw is maintained, which effectively suppresses the slight deformation of the ball screw and ensures the overall roundness of the ball screw. When the clamping unit drives the ball screw to rotate, the pneumatic push rod drives the grinding unit as a whole to move back and forth on the ball screw, and the grinding wheel is used to grind the outer wall. At the same time, the thread grinding tool is used to grind the thread groove back and forth, making the thread groove smoother, improving the transmission efficiency, reducing the transmission resistance, and realizing all-round grinding of the outer wall and the thread groove while ensuring the roundness of the ball screw.

[0011] At the same time, under the action of the adjusting part and the electric push rod, by replacing and adjusting the grinding wheel and the thread grinding tool, it can quickly adapt to the ball screw grinding tasks with different sizes and precision requirements, further improving the applicability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 any creative work.

[0013] Figure 1 This is a schematic diagram of the overall structure of the grinding device for ball screw processing.

[0014] Figure 2 This is a schematic diagram of the structure of the clamping unit of the grinding device for ball screw processing.

[0015] Figure 3 This is a schematic diagram of the top view of the grinding unit of the grinding device for ball screw processing.

[0016] Figure 4 This is a schematic diagram of the structure of a processing machine for a grinding device used for ball screw processing.

[0017] Figure 5This is a schematic diagram of the structure of the adjusting part of the grinding device for ball screw processing.

[0018] Figure 6 This is a schematic diagram of the structure of the movable plate of the grinding device for ball screw processing.

[0019] Figure 7 This is a schematic diagram of the structure of the grinding component 2 of the grinding device for ball screw processing.

[0020] Figure 8 This is a schematic diagram of the structure of the grinding part three of the grinding device for ball screw processing.

[0021] In the figure: 1. Processing machine; 11. Sliding groove 1; 12. Sliding groove 2; 2. Clamping unit; 21. Fixed seat; 22. Claw plate; 23. Motor 1; 24. Abutment assembly; 241. Sliding seat; 242. Cylinder; 243. Sliding rod 1; 244. Rotating abutment block; 3. Grinding unit; 31. Support frame; 311. Pneumatic push rod; 312. Sliding hole 1; 32. Grinding assembly 1; 321. Adjusting member; 3211. Fixed frame; 3212. Motor 2; 3213. Screw; 3214. Sliding rod 3; 322, grinding part one; 3221, movable plate; 3222, mounting plate; 3223, grinding wheel; 3224, motor three; 3225, threaded hole; 3226, sliding hole two; 323, grinding part two; 33, grinding assembly two; 331, fixed block; 332, electric push rod; 333, grinding part three; 3331, connecting plate; 3332, connecting block; 3333, threaded grinding tool; 3334, clamping groove; 34, lubrication and cooling pipe; 4, ball screw; 41, outer wall; 42, threaded groove. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] Example 1, reference Figure 1-Figure 4 , which is the first embodiment of the present invention, provides a grinding device for ball screw processing, comprising a processing machine table 1, a table surface for processing a ball screw 4, which supports the entire device, a clamping unit 2 provided on the processing machine table 1, which is used to clamp the ball screw 4 and drive the ball screw 4 to rotate, and a grinding unit 3 provided on the clamping unit 2, which is used to cooperate with the clamping unit 2 to perform a grinding operation on the ball screw 4;

[0024] The grinding unit 3 includes a support frame 31 provided on the processing machine 1, which plays a supporting and sliding role, a grinding assembly 1 32 provided on the support frame 31 for grinding the outer wall 41 of the ball screw 4, and for grinding the ball screw 4 clamped by the clamping unit 2, a grinding assembly 2 33 provided on the grinding assembly 1 32 for grinding the thread groove 42 of the ball screw 4, which is used to cooperate with the support frame 31 to drive the grinding assembly 2 33 to move back and forth on the ball screw 4 to grind various parts of the ball screw 4, and at the same time cooperate with the movement of the grinding assembly 1 32 to grind and polish the thread groove 42 on the ball screw 4 to reduce burrs and roughness, and a lubricating cooling pipe 34 provided on the grinding assembly 2 33 for lubricating and cooling the grinding part of the ball screw 4, which is used to lubricate and cool the grinding part of the ball screw 4;

[0025] The grinding component 1 32 is provided with multiple groups of action points on the outer wall 41 of the ball screw 4. The intersection of the forces generated by the multiple groups of action points relative to the ball screw 4 is the axis of the ball screw 4. The ball screw 4 is ground by cooperating with the grinding component 2 33, and then the ball screw 4 is driven to rotate by cooperating with the clamping unit 2 and the support frame 31, thereby driving the grinding component 2 33 to grind the thread groove 42 in all directions.

[0026] The clamping unit 2 includes a fixed base 21 provided on the processing machine 1, which plays a supporting role, a claw plate 22 provided on the fixed base 21, which is used to clamp the ball screw 4, a motor 23 provided on the fixed base 21 for driving the claw plate 22, which is used to drive the claw plate 22 to rotate, thereby driving the ball screw 4 to rotate, and an abutment assembly 24 provided on the processing machine 1 for cooperating with the claw plate 22, which is used to abut the ball screw 4 and cooperate with the claw plate 22 to make the rotation of the ball screw 4 more stable;

[0027] The abutment assembly 24 includes a sliding seat 241 provided on the processing machine 1 for moving back and forth on the processing machine 1, a cylinder 242 provided on the processing machine 1 for driving the sliding seat 241, a slide rod 243 provided on the processing machine 1 for the sliding seat 241 to slide back and forth, for limiting the movement trajectory of the sliding seat 241, and a rotating abutment block 244 provided on the sliding seat 241 for cooperating with the ball screw 4 and abutting the ball screw 4. The center of rotation of the rotating abutment block 244 is coaxial with the center of rotation of the claw plate 22. Such an arrangement makes the rotation of the ball screw 4 more stable.

[0028] The processing machine 1 is provided with a sliding groove 2 12 that matches the sliding rod 1 243 and is used to install the sliding rod 1 243 .

[0029] The parts to be ground on the ball screw 4 are respectively set as the outer wall 41 and the thread groove 42 .

[0030] In summary, first control the grinding assembly 32 to open to a degree that satisfies the passage of the ball screw 4, and then clamp one end of the ball screw 4 through the claw plate 22, and then control the grinding assembly 32 to shrink and abut against the ball screw 4. At this time, the sliding seat 241 is driven to approach the ball screw 4 by the cylinder 242, so that the rotating abutment block 244 is firmly abutted against the other end of the ball screw 4. At this time, start the motor 23 to drive the ball screw 4 to rotate. At the same time, start the grinding assembly 32 to grind the outer wall 41. At this time, the threads of the grinding assembly 32 and the grinding assembly 2 33 on the ball screw 4 and the grinding assembly 2 33 cooperate to drive the grinding assembly 32 to move back and forth on the ball screw 4 under the action of the support frame 31, and simultaneously grind and polish the outer wall 41 and the thread groove 42 to reduce burrs and roughness, reduce friction and improve transmission efficiency.

[0031] Example 2, reference Figures 1-6 , which is the second embodiment of the present invention, and is different from the previous embodiment in that: a specific structure of a grinding assembly 32 in a grinding device for ball screw processing is provided. Compared with embodiment 1, further, a pneumatic push rod 311 is provided on the support frame 31, which is used to drive the support frame to move back and forth on the processing machine 1, thereby driving the grinding unit 3 as a whole to move back and forth on the processing machine 1. The push and pull speed of the pneumatic push rod 311 is coordinated with the rotation speed of the ball screw 4. Specifically, the moving distance of the pneumatic push rod 311 per unit time is equal to the absolute distance of the thread groove 42 corresponding to the number of rotations of the ball screw 4 per unit time. A sliding hole 312 for cooperating with the pneumatic push rod 311 is used to cooperate with the pneumatic push rod 311 to drive the support frame 31 to move back and forth. A sliding groove 11 for cooperating with the support frame 31 is provided on the processing machine 1, which is used to install the pneumatic push rod 311 and also serves as a limit.

[0032] Among them, the grinding component 1 32 includes an adjusting part 321 arranged on the support frame 31, which plays a supporting and adjusting role, a grinding part 1 322 arranged on the adjusting part 321, which is used to cooperate with the adjusting part 321 to grind the ball screw 4, and a grinding part 2 323 arranged on the adjusting part 321, which is used to cooperate with the grinding part 1 322 to grind the ball screw 4.

[0033] Among them, the adjusting member 321 includes a fixed frame 3211 arranged on the support frame 31, which supports the grinding member 1 322 and the grinding member 2 323, a motor 2 3212 arranged on the fixed frame 3211, which is used to provide power, a screw 3213 arranged on the fixed frame 3211 and driven by the motor 2 3212, which is used to rotate in conjunction with the drive of the motor 2 3212, and a sliding rod 3214 arranged on the fixed frame 3211, which plays a connecting and supporting role.

[0034] The grinding member 1 322 includes a movable plate 3221 provided on the screw 3213, which is used to move back and forth in coordination with the rotation of the screw 3213, and plays a role of connection and support; a mounting plate 3222 provided on the movable plate 3221, which plays a role of connection; a grinding wheel 3223 provided on the mounting plate 3222, which is used to rotate and grind the ball screw 4; and a motor 3224 provided on the mounting plate 3222 for driving the grinding wheel 3223, which is used to drive the grinding wheel 3223 to rotate.

[0035] Two groups of grinding wheels 3223 are provided on the mounting plate 3222 , so as to increase the contact points between the grinding wheels 3223 and the ball screw 4 , and increase the force points of the grinding wheels 3223 on the ball screw 4 .

[0036] Among them, the movable plate 3221 is provided with a threaded hole 3225 and a sliding hole 2 3226 which respectively cooperate with the screw 3213 and the sliding rod 3214. When the screw 3213 rotates, the threaded hole 3225 cooperates with the movable plate 3221 to produce a push-pull effect, driving the movable plate 3221 to move back and forth through the sliding hole 2 3226 and the sliding rod 3 3214.

[0037] Among them, the grinding part 2 323 has the same structure as the grinding part 1 322. The grinding part 1 322 cooperates with the grinding part 2 323 to make the force on both sides of the ball screw 4 uniform. Through the four sets of grinding wheels 3223, the screw 3213 controls the back and forth movement of the movable plate 3221, so that the ball screw 4 is clamped in the middle position of the four sets of movable plates 3221, and the forces exerted on the ball screw 4 by the four sets of grinding wheels 3223 are offset from each other, so that the roundness of the ball screw 4 is not affected. The motor 3 3224 then drives the grinding wheel 3223 to rotate to grind the outer wall 41.

[0038] The rest of the structure is the same as that of Example 1.

[0039] In summary, when the claw plate 22 clamps one end of the ball screw 4, the motor 2 3212 is started to drive the screw 3213 to rotate. At this time, under the action of the threaded hole 3225, the two sets of fixed frames 3211 move away from each other, so that the distance between them is enough to pass the ball screw 4. At this time, the support frame 31 is pulled to drive the grinding unit 3 as a whole to the starting position. At this time, the motor 2 3212 controls the screw 3213 to drive the movable plate 3221 to move closer to each other until the four sets of grinding wheels 3 223 contacts the outer wall 41, and at this time the grinding component 2 33 is controlled and adjusted to fit correspondingly with the thread groove 42. At this time, the motor 3 3224 is started to drive the grinding wheel 3223 to rotate and grind the outer wall 41. At the same time, the motor 1 23 drives the ball screw 4 to rotate through the claw plate 22. At this time, the thread groove 42 on the ball screw 4 rotates accordingly, and then the grinding wheel 3223 is driven to move back and forth on the outer wall 41 through the pneumatic push rod 311 to perform comprehensive grinding on all parts of the outer wall 41.

[0040] Example 3, reference Figures 1-8 , which is the second embodiment of the present invention, differs from the previous embodiment in that it provides a specific structure of a second grinding assembly 33 in a grinding device for ball screw processing. Compared with Example 2, the second grinding assembly 33 further includes a fixed block 331 disposed on a fixed frame 3211, which performs a fixing and connecting function, an electric push rod 332 disposed on the fixed block 331, which performs a power transmission function, and a third grinding member 333 disposed on the driving end of the electric push rod 332, which is used to cooperate with the electric push rod 332 to move up and down and cooperate with the thread on the ball screw 4.

[0041] Among them, the grinding part three 333 includes a connecting plate 3331 provided on the driving end of the electric push rod 332, which plays a supporting role, a connecting block 3332 provided on the connecting plate 3331, which plays a connecting role, and the connecting block 3332 and the connecting plate 3331 are fixedly connected by bolts, which is convenient for replacing and adjusting the connecting block 3332 according to the size of the thread groove 42 of the ball screw 4, and a thread grinding tool 3333 provided on the connecting block 3332 and matched with the thread groove 42. When the lever 4 rotates, the pushing and pulling action of the pneumatic push rod 311 drives the thread grinding tool 3333 to move back and forth in the thread groove 42 in cooperation with the rotation of the ball screw 4, and grinds and polishes the thread groove 42. At the same time, the pneumatic push rod 311 drives the grinding wheel 3223 to move back and forth on the ball screw 4 to grind the outer wall 41, and the clamping groove 3334 provided on the connecting plate 3331 and cooperating with the connecting block 3332 is used to position the connecting block 3332 on the connecting plate 3331.

[0042] The rest of the structure is the same as that of Example 2.

[0043] In summary, when the grinding wheel 3223 abuts against the outer wall 41, the connecting plate 3331 is driven to move by the electric push rod 332, so that the thread grinding tool 3333 is in contact with the thread groove 42. At this time, as the motor 23 drives the ball screw 4 to rotate, the pneumatic push rod 311 is started to drive the grinding unit 3 to move back and forth on the ball screw 4. At this time, the thread groove 42 is polished by rotating to cooperate with the back and forth movement of the thread grinding tool 3333. At the same time, the grinding wheel 3223 grinds the outer wall 41 by moving back and forth on the ball screw 4.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A grinding device for ball screw machining, characterized in that: It comprises a processing machine (1), a clamping unit (2) arranged on the processing machine (1), and a grinding unit (3) arranged on the clamping unit (2); The grinding unit (3) includes a support frame (31) arranged on the processing machine (1), a grinding assembly (32) arranged on the support frame (31) for grinding the outer wall (41) of the ball screw (4), a grinding assembly (33) arranged on the grinding assembly (32) for grinding the thread groove (42) of the ball screw (4), and a lubricating cooling pipe (34) arranged on the grinding assembly (33) for lubricating and cooling the grinding portion of the ball screw (4); The grinding assembly (32) is provided with multiple groups of action points on the outer wall (41) of the ball screw (4), and the intersection of the action forces generated by the multiple groups of action points relative to the ball screw (4) is the axis of the ball screw (4). The grinding assembly (33) is used to grind the ball screw (4), and the ball screw (4) is driven to rotate by the clamping unit (2) and the support frame (31), thereby driving the grinding assembly (33) to grind the thread groove (42) in all directions. The grinding assembly 1 (32) includes an adjusting member (321) disposed on the support frame (31), a grinding member 1 (322) disposed on the adjusting member (321), and a grinding member 2 (323) disposed on the adjusting member (321); The adjusting member (321) includes a fixing frame (3211) disposed on the supporting frame (31), a second motor (3212) disposed on the fixing frame (3211), a screw (3213) disposed on the fixing frame (3211) and driven by the second motor (3212), and a third slide bar (3214) disposed on the fixing frame (3211); The grinding member 1 (322) includes a movable plate (3221) disposed on the screw (3213), a mounting plate (3222) disposed on the movable plate (3221), a grinding wheel (3223) disposed on the mounting plate (3222), and a motor 3 (3224) disposed on the mounting plate (3222) for driving the grinding wheel (3223); Two sets of grinding wheels (3223) are provided on the mounting plate (3222); The grinding member 2 (323) has the same structure as the grinding member 1 (322). The grinding member 1 (322) cooperates with the grinding member 2 (323) to stably clamp the ball screw (4) while keeping the force on the ball screw (4) uniform. The second grinding assembly (33) includes a fixed block (331) disposed on the fixed frame (3211), an electric push rod (332) disposed on the fixed block (331), and a third grinding member (333) disposed on the driving end of the electric push rod (332); The grinding member 3 (333) comprises a connecting plate (3331) provided on the driving end of the electric push rod (332), a connecting block (3332) provided on the connecting plate (3331), a threaded grinding tool (3333) provided on the connecting block (3332) and cooperating with the thread on the ball screw (4), and a clamping groove (3334) provided on the connecting plate (3331) and cooperating with the connecting block (3332).

2. The grinding device for ball screw machining according to claim 1, wherein: The support frame (31) is provided with a pneumatic push rod (311) and a sliding hole (312) for cooperating with the pneumatic push rod (311), and the processing machine (1) is provided with a sliding groove (11) for cooperating with the support frame (31).

3. The grinding device for ball screw machining according to claim 2, wherein: The movable plate (3221) is provided with a threaded hole (3225) and a second sliding hole (3226) respectively matching the screw rod (3213) and the third sliding rod (3214).

4. The grinding device for ball screw machining according to claim 3, wherein: The clamping unit (2) includes a fixed seat (21) disposed on the processing machine (1), a claw plate (22) disposed on the fixed seat (21), a motor (23) disposed on the fixed seat (21) for driving the claw plate (22), and an abutting assembly (24) disposed on the processing machine (1) for cooperating with the claw plate (22); The abutment assembly (24) includes a sliding seat (241) provided on the processing machine (1), a cylinder (242) provided on the processing machine (1) for driving the sliding seat (241), a slide rod (243) provided on the processing machine (1) for sliding the sliding seat (241) back and forth, and a rotating abutment block (244) provided on the sliding seat (241) for cooperating with the ball screw (4); The processing machine (1) is provided with a second sliding groove (12) that matches the first sliding rod (243).

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