Ball screw polishing device

Abstract

The utility model relates to a ball screw polishing device, it includes: the clamping mechanism, the clamping mechanism includes the movable setting bottom plate, the movable setting of the slide plate and the clamping assembly of installation in the slide plate top top of the bottom plate, the clamping assembly is used for clamping the screw to be polished, the polishing mechanism, the polishing mechanism includes rotatably setting the sand belt in the clamping mechanism top, the sand belt is in the upper surface of the screw. The utility model ball screw polishing device when polishing the bar, first by clamping assembly from both ends clamping the bar to be polished, adjusts the position of polishing mechanism to the sand belt and is in the upper surface of the bar, drives the sand belt rotation through the motor to polish the surface of the bar, at the same time cylinder drives the bottom plate to move, and then the sand belt completes the polishing of the whole circumference of the bar, improves the efficiency of bar polishing, saves the investment of manual work, saves the cost, and simultaneously will not appear the polishing blind area, improves the polishing accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of grinding technology, specifically relating to a ball screw grinding device. Background Technology

[0002] Ball screws are the most commonly used transmission components in machine tools and precision machinery. Their main function is to convert rotary motion into linear motion, or torque into axial reciprocating force, while also possessing the characteristics of high precision, reversibility, and high efficiency. Due to their very low frictional resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] During the production and processing of ball screws, the raw material rods need to be ground. After grinding, the surface of the rods is smoother, which not only reduces frictional resistance with other parts, but also improves the accuracy and stability of transmission. Moreover, because the surface of the screw is smoother after grinding, frictional loss is reduced, resulting in a significant increase in service life.

[0004] Current technology still requires operators to hand-grind the rods with sandpaper. Manual grinding is inefficient and cannot meet the production needs of large-volume products. In addition, manual grinding has blind spots and is prone to missing areas, so the grinding accuracy cannot be guaranteed. Utility Model Content

[0005] This invention provides a ball screw grinding device that solves the problems of low efficiency and blind spots in manual grinding in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a ball screw grinding device, comprising: A clamping mechanism, comprising a movably disposed base plate, a sliding plate movably disposed on top of the base plate in opposite directions or in opposite directions, and a clamping assembly mounted on top of the sliding plate, the clamping assembly being used to clamp the lead screw to be polished. A grinding mechanism, the grinding mechanism including a sanding belt rotatably disposed above the clamping mechanism, the sanding belt abutting against the upper surface of the lead screw.

[0007] Optimally, the gripping assembly includes a support plate fixed to the top of the skateboard, a rotating plate rotatably mounted inside the support plate, a finger cylinder mounted on the opposite side of the rotating plate, a gripping block connected to the finger cylinder, and a gripping groove formed on the opposite side of the gripping block.

[0008] Optimally, the grinding mechanism further includes a vertical plate mounted above the base plate, a mounting plate height-adjustable below the vertical plate, a drive wheel rotatably mounted on one side of the vertical plate, and at least two sets of pressure rollers rotatably mounted on one side of the mounting plate, with the sanding belt wound around the drive wheel and the pressure rollers.

[0009] Optimally, the grinding mechanism further includes an insert plate fixed to one side of the upright plate, a slot that vertically penetrates the insert plate, a first adjusting plate inserted into the slot, and a locking member for locking the insert plate and the first adjusting plate, wherein the mounting plate is fixed to one side of the first adjusting plate.

[0010] Optimally, the grinding mechanism further includes a second adjusting plate that is angle-adjustably mounted on one side of the vertical plate and an adjusting wheel that is rotatably mounted on one side of the second adjusting plate, with the sanding belt wound around the adjusting wheel.

[0011] Optimally, the clamping mechanism further includes a first lead screw and a second lead screw rotatably mounted on the top of the base plate and coaxially arranged, a first lead screw nut mounted on the first lead screw, a second lead screw nut mounted on the second lead screw, and a connecting sleeve connecting the first lead screw and the second lead screw. The slide plate is fixed on the first lead screw nut and the second lead screw nut respectively, and the first lead screw and the second lead screw rotate in opposite directions.

[0012] Optimally, the clamping mechanism further includes a second slide rail fixed to the top of the base plate, a second slider slidably mounted on the slide rail, a first extension plate fixed to one side of the first lead screw nut, and a second extension plate fixed to one side of the second lead screw nut, wherein both the first extension plate and the second extension plate are connected to the second slider.

[0013] Ideally, the angle of the clamping groove is 90°.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model of ball screw grinding device first clamps the bar to be ground from both ends by a clamping assembly, adjusts the position of the grinding mechanism until the abrasive belt abuts against the upper surface of the bar, and drives the abrasive belt to rotate through a motor to grind the surface of the bar. At the same time, a cylinder drives the base plate to move, and then the abrasive belt completes the grinding of the entire circumference of the bar. This improves the efficiency of bar grinding, saves labor input, saves costs, and eliminates grinding blind spots, thus improving grinding accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a schematic diagram of the clamping mechanism of this utility model; Figure 3 This is a front view of the clamping mechanism of this utility model; Figure 4 This is a partial structural schematic diagram of the clamping mechanism of this utility model; Figure 5 This is a schematic diagram of the grinding mechanism of this utility model; Figure 6 This is a structural schematic diagram of the grinding mechanism of this utility model from another angle; Explanation of reference numerals in the attached figures: 1. Base plate; 2. Support platform; 3. Motor; 4. Second slide rail; 5. Second slider; 6. Bearing seat; 7. First lead screw; 8. First lead screw nut; 9. Second lead screw; 10. Second lead screw nut; 11. Connecting sleeve; 12. First extension plate; 13. Second extension plate; 14. Slide plate; 15. Support plate; 16. Rotary cylinder; 17. Turning plate; 18. Finger cylinder; 19. Clamping block; 20. Clamping groove; 21. Vertical plate; 22. Insert plate; 23. Slot; 24. First adjusting plate; 25. Adjusting groove; 26. Fixing hole; 27. Mounting plate; 28. Drive wheel; 29. ​​Pressure wheel; 30. Second adjusting plate; 31. Adjusting cylinder; 32. Adjusting wheel; 33. Sanding belt; 34. First slide rail; 35. First slider. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0017] This utility model ball screw grinding device is typically used to grind the raw material bar of ball screw. After grinding, the surface of the bar is smoother, which not only reduces the frictional resistance with other parts, but also improves the accuracy and stability of transmission. Moreover, because the screw surface is smoother after grinding, friction loss is reduced, resulting in a significant increase in service life. (After grinding, the cylindrical bar is cut, geared, and top-finished according to the length of the finished product to form the ball screw body.)

[0018] like Figure 1 As shown, the grinding device includes a clamping mechanism and a grinding mechanism. The clamping mechanism is used to clamp raw material bars of different diameters and lengths to improve the versatility of the equipment. The grinding mechanism is mounted above the clamping mechanism and is used to grind the surface of the bars clamped by the clamping mechanism to remove impurities such as the surface oxide layer and improve the smoothness of the surface.

[0019] like Figure 2 , 3The diagram shows the structure of the clamping mechanism, which includes a base plate 1, a support platform 2, a motor 3, a second slide rail 4, a second slider 5, a bearing seat 6, a first lead screw 7, a first lead screw nut 8, a second lead screw 9, a second lead screw nut 10, a connecting sleeve 11, a first extension plate 12, a second extension plate 13, a sliding plate 14, a support plate 15, a rotary cylinder 16, a rotating plate 17, a finger cylinder 18, a clamping block 19, and a clamping groove 20. The base plate 1 is slidably mounted on the grinding machine table via the cooperation of the first slide rail 34 and the first slider 35 (specifically, the first slide rail 34 is fixed to the top of the grinding machine table by screws, and the first slider 35 is slidably mounted on the first slide rail 34. The base plate 1 is fixed to the top of the first slider 35 by screws).

[0020] The cylinder body is fixed to the mounting base of the grinding machine by screws, and the piston rod of the cylinder is fixed to one side of the base plate 1 by welding. The cylinder drives the base plate 1 to move along the length of the first slide rail 34 to ensure that the sanding belt 33 above can grind the outer circumference of the entire bar (the cylinder is not shown in the figure, and a commercially available linear cylinder can be used).

[0021] The second slide rail 4 is fixed to the top of the base plate 1 by screws, and the second slide rail 4 is parallel to the first slide rail 34. The second slider 5 is slidably installed on the second slide rail 4. By setting the second slide rail 4 and the second slider 5 to cooperate with each other, the stability of the movement of the clamping component is improved.

[0022] There are two bearing seats 6, which are fixed to the top of the base plate 1 at intervals by screws. One end of the first lead screw 7 is rotatably mounted in one of the bearing seats 6 via a bearing, and one end of the second lead screw 9 is rotatably mounted in the other bearing seat 6 via a bearing. The first lead screw 7 and the second lead screw 9 are coaxially arranged. The connecting sleeve 11 is welded between the first lead screw 7 and the second lead screw 9. When the motor 3 drives the second lead screw 9 to rotate, the rotational motion of the second lead screw 9 is synchronously transmitted to the first lead screw 7 through the connecting sleeve 11, thereby driving the first lead screw 7 to rotate synchronously.

[0023] The support platform 2 is fixed to the top of the base plate 1 by welding or screw fastening, and is located on one side of the bearing seat 6. The motor 3 is fixed to the top of the support platform 2 by screw fastening, and the output shaft of the motor is connected to the end of the second lead screw 9 away from the first lead screw 7 via a coupling, so that the motor 3 drives the second lead screw 9 to rotate. By setting the support platform 2 to support the motor 3, it is ensured that the output shaft of the motor 3 and the second lead screw 9 are in a coaxial position, so as to avoid the output shaft of the motor 3 tilting and damaging the motor 3.

[0024] The first lead screw nut 8 is fitted onto the first lead screw 7, and the second lead screw nut 10 is fitted onto the second lead screw 9. Therefore, when the motor 3 drives the second lead screw 9 to rotate, the first lead screw nut 8 will move along the first lead screw 7, and the second lead screw nut 10 will also move along the second lead screw 9.

[0025] The first lead screw 7 and the second lead screw 9 rotate in opposite directions. Therefore, when the motor 3 drives the second lead screw 9 to rotate, the first lead screw nut 8 and the second lead screw nut 10 move inward or outward synchronously. This adjusts the distance between the two sets of clamping components above, thereby accommodating the clamping of bars of different lengths. There are two slide plates 14, respectively fixed to the first lead screw nut 8 and the second lead screw nut 10. The clamping components are mounted on the slide plates 14 and used to clamp the bars from both ends.

[0026] The first extension plate 12 is fixed to one side of the first lead screw nut 8 by welding and to the top of the second slider 5. The second extension plate 13 is fixed to one side of the second lead screw nut 10 by welding and to the top of the second slider 5. When the motor 3 drives the second lead screw 9 to rotate, it will drive the first lead screw 7 to rotate synchronously. At this time, the first lead screw nut 8 and the second lead screw nut 10 move inward or outward synchronously, which will drive the second slider 5 to move along the second slide rail 4, ensuring the stability of the subsequent movement of the clamping assembly (since the two sets of second sliders 5 share a second slide rail 4, the overall structure is more compact and saves costs).

[0027] like Figure 4 As shown, the support plate 15 is vertically fixed to the top of the slide plate 14 by welding. The rotary cylinder 16 is fixed to the inner side of the top of the support plate 15 by screws. The rotating plate 17 is fixed to the rotating part of the rotary cylinder 16 by screws, and the rotary cylinder 16 drives the rotating plate 17 to rotate. The finger cylinder 18 is fixed to the side of the rotating plate 17 away from the rotary cylinder 16 by screws. The clamping block 19 is fixed to the gripper of the finger cylinder 18 by screws. The clamping groove 20 is opened on the inner side of the clamping block 19, and the clamping groove 20 is at 90°.

[0028] The finger cylinder 18 drives the two sets of clamping blocks 19 to move inward synchronously, thereby clamping the raw material bar. The clamping groove 20 is V-shaped, which can meet the clamping of bars of different diameters and has stronger versatility. Moreover, when clamping cylindrical bars, the V-shaped clamping groove 20 can achieve centering clamping of the bar, making the clamping more secure and reliable.

[0029] The grinding component is mounted above the clamping component and is used to grind the bar held by the clamping component, such as... Figure 5 , 6As shown, the grinding assembly includes a vertical plate 21, an insert plate 22, a slot 23, a first adjusting plate 24, an adjusting groove 25, a fixing hole 26, a mounting plate 27, a drive wheel 28, a pressure wheel 29, a second adjusting plate 30, an adjusting cylinder 31, an adjusting wheel 32, and a sanding belt 33. The gantry frame is fixed to the grinding machine platform by screws and is positioned above the clamping mechanism. The gantry frame is in the shape of an inverted "[" with its opening facing downwards to avoid the bar material gripped by the clamping mechanism. The vertical plate 21 is fixed to the bottom of the gantry frame by welding and is located above the bar material gripped by the clamping mechanism, used for grinding the bar material.

[0030] The motor 3 is fixed to one side of the upright plate 21 by screws. The upright plate 21 has a through hole through which the motor shaft passes. The motor shaft passes through the through hole of the upright plate and is installed together with the drive wheel 28 by key connection. The motor drives the drive wheel 28 to rotate, which in turn drives the sanding belt 33 to rotate to grind the bar below.

[0031] The insert plate 22 is fixed to the side of the upright plate 21 away from the drive wheel 28 by welding. The slot 23 passes through the insert plate 22 vertically. The first adjusting plate 24 is inserted into the slot 23 of the insert plate 22 from bottom to top. The cross-sectional area of ​​the first adjusting plate 24 matches the cross-sectional area of ​​the slot 23. Therefore, when the height of the first adjusting plate 24 is adjusted, the slot 23 can limit and guide the first adjusting plate 24 to prevent the first adjusting plate 24 from tilting.

[0032] The adjustment groove 25 is located on the side of the first adjustment plate 24 away from the vertical plate 21. The fixing hole 26 passes through the insert plate 22 and cooperates with the adjustment groove 25. After the height of the first adjustment plate 24 is adjusted, the position of the first adjustment plate 24 is fixed by the fastening bolt (specifically, the adjustment groove 25 is a rounded rectangle, the inner wall of the fixing hole 26 is provided with internal thread, and the outer circumferential surface of the fastening bolt is provided with external thread. By tightening the fastening bolt, the fastening bolt is pressed into the adjustment groove 25, thereby completing the fixation of the first adjustment plate 24 and the insert plate 22).

[0033] Mounting plate 27 is fixed to the bottom of first adjusting plate 24 by welding or screw fastening. When the height of first adjusting plate 24 is adjusted, the height of mounting plate 27 is adjusted synchronously. There are at least two pressure rollers 29, which are rotatably mounted on one side of mounting plate 27. At least two pressure rollers 29 can ensure that the lowest point of sanding belt 33 is in a horizontal state, improve the grinding accuracy, and avoid grinding blind spots (specifically, at least two rollers are fixed on one side of mounting plate 27, and pressure rollers 29 are mounted on rollers through bearings. Under the action of bearings, it is ensured that pressure rollers 29 can rotate normally, and then under the action of friction, drive sanding belt 33 to rotate to grind the bar below).

[0034] The second adjusting plate 30 is rotatably connected to one side of the vertical plate 21 via a pin. The cylinder body of the adjusting cylinder 31 is rotatably connected to one side of the vertical plate 21. The piston rod of the adjusting cylinder 31 is rotatably connected to the bottom of the second adjusting plate 30. The second adjusting plate 30 is rotated by the adjusting cylinder 31 to adjust its angle (the adjusting cylinder 31 can be a commercially available linear cylinder).

[0035] The adjusting wheel 32 is rotatably mounted on the side of the second adjusting plate 30 away from the vertical plate 21 (specifically, the roller shaft is fixedly mounted on the side of the second adjusting plate 30 away from the vertical plate 21, and the adjusting wheel 32 is mounted on the roller shaft through a bearing. Under the action of the bearing, the adjusting wheel 32 can rotate normally, and then under the action of friction, it drives the sanding belt 33 to rotate to grind the bar below).

[0036] The abrasive belt 33 is wound around the drive wheel 28, the adjusting wheel 32, and the pressure wheel 29. The motor 3 drives the drive wheel 28 to rotate, which in turn drives the abrasive belt 33 to rotate, completing the grinding of the bar below. The tension of the abrasive belt 33 can be adjusted by adjusting the angle of the second adjusting plate 30 to meet the grinding needs of bars of different diameters.

[0037] When grinding a bar, the ball screw grinding device of this utility model first clamps the bar to be ground by the clamping mechanism, adjusts the height of the first adjusting plate 24 until the sanding belt 33 abuts against the upper surface of the bar, and drives the sanding belt 33 to rotate by the motor to grind the surface of the bar. At the same time, the cylinder drives the base plate 1 to move, and then the sanding belt 33 completes the grinding of the circumference of the bar.

[0038] By adjusting the angle of the second adjusting plate 30, the grinding work of bars with different diameters can be met. (When changing to a large diameter bar, the operator adjusts the position of the first adjusting plate 24 upward, at which time the sanding belt 33 becomes loose, and the adjusting cylinder 31 drives the second adjusting plate 30 to open outward to tighten the sanding belt 33; when changing to a small diameter bar, the operator adjusts the position of the first adjusting plate 24 downward, at which time the sanding belt is tighter, and the adjusting cylinder 31 drives the second adjusting plate 30 to retract inward to loosen the sanding belt 33, making it convenient for the operator to adjust).

[0039] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A ball screw grinding device, characterized in that, It includes: The clamping mechanism includes a movably disposed base plate (1), a sliding plate (14) movably disposed on the top of the base plate (1) in opposite directions, and a clamping assembly mounted on the top of the sliding plate (14), the clamping assembly being used to clamp the raw material bar to be polished. A grinding mechanism, the grinding mechanism including a sanding belt (33) rotatably disposed above the clamping mechanism, the sanding belt (33) abutting against the upper surface of the bar.

2. The ball screw grinding device according to claim 1, characterized in that: The clamping assembly includes a support plate (15) fixed to the top of the slide plate (14), a rotating plate (17) rotatably mounted inside the support plate (15), a finger cylinder (18) mounted on the opposite side of the rotating plate (17), a clamping block (19) connected to the finger cylinder (18), and a clamping groove (20) opened on the opposite side of the clamping block (19).

3. The ball screw grinding device according to claim 1, characterized in that: The grinding mechanism also includes a vertical plate (21) mounted above the base plate (1), a mounting plate (27) mounted at height adjustable below the vertical plate (21), a drive wheel (28) rotatably mounted on one side of the vertical plate (21), and at least two sets of pressure rollers (29) rotatably mounted on one side of the mounting plate (27), and the sanding belt (33) is wound around the drive wheel (28) and the pressure rollers (29).

4. The ball screw grinding device according to claim 3, characterized in that: The grinding mechanism also includes an insert plate (22) fixed to one side of the upright plate (21), a slot (23) that vertically penetrates the insert plate (22), a first adjusting plate (24) inserted into the slot (23), and a locking member for locking the insert plate (22) and the first adjusting plate (24). The mounting plate (27) is fixed to one side of the first adjusting plate (24).

5. The ball screw grinding device according to claim 3, characterized in that: The grinding mechanism also includes a second adjusting plate (30) that is angle-adjustably mounted on one side of the vertical plate (21) and an adjusting wheel (32) that is rotatably mounted on one side of the second adjusting plate (30), and the sanding belt (33) is wound around the adjusting wheel (32).

6. The ball screw grinding device according to claim 1, characterized in that: The clamping mechanism further includes a first lead screw (7) and a second lead screw (9) rotatably mounted on the top of the base plate (1) and coaxially arranged, a first lead screw nut (8) mounted on the first lead screw (7), a second lead screw nut (10) mounted on the second lead screw (9), and a connecting sleeve (11) connecting the first lead screw (7) and the second lead screw (9). The slide plate (14) is fixed on the first lead screw nut (8) and the second lead screw nut (10) respectively, and the first lead screw (7) and the second lead screw (9) have opposite rotation directions.

7. The ball screw grinding device according to claim 6, characterized in that: The clamping mechanism further includes a second slide rail (4) fixed to the top of the base plate (1), a second slider (5) slidably mounted on the second slide rail (4), a first extension plate (12) fixed to one side of the first lead screw nut (8), and a second extension plate (13) fixed to one side of the second lead screw nut (10). The first extension plate (12) and the second extension plate (13) are both connected to the second slider (5).

8. The ball screw grinding device according to claim 2, characterized in that: The angle of the clamping groove (20) is 90°.

Images