Machining tool for arc spiral groove of ball nut

Abstract

A machining tool for an arc spiral groove of a ball nut comprises a workbench, a support is fixedly connected to the rear portion of the upper side wall of the workbench, a lifting plate is slidably connected between the inner walls of the two sides of the support, an air cylinder is installed on the outer wall of the upper side of the support, and the telescopic end of the air cylinder penetrates through the upper side wall of the support and is fixedly connected with the lifting plate. A mounting plate is fixedly connected to the front side wall of the lifting plate, a first motor is mounted on the front portion of the upper side wall of the mounting plate, and the output shaft end of the first motor penetrates through the mounting plate and is fixedly connected with a connecting base. Compared with the prior art, the spherical turning tool replacing device has the advantages that through cooperation of the cavity, the rotating rod, the first rotary knob, the driving bevel gear, the notch, the partition plate, the positioning block, the first screw rod, the moving plate, the push rod and the driven bevel gear, the spherical turning tool replacing process is convenient and fast, the shutdown time when the spherical turning tool is replaced is shortened, the machining efficiency is guaranteed, and the spherical turning tool replacing device is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of ball nut processing, in particular to a processing tool for arc spiral grooves of ball nut. Background Art

[0002] A ball nut consists of a guide damping nut and a nut body. The damping nut has a guide groove and a built-in elastic deformer, while the nut also has a guide flange. When the nut is rotated in the opposite direction, the balls are ejected from the guide damping nut through the elastic tooth flanks and join the thread. The nut then rolls on the balls and is quickly guided by the guide flange. Because the balls have a very small contact area with the threads, the nut can move quickly and easily along the spiral. This structure gives ball nuts the advantages of high precision, high efficiency, low wear, and low noise, making them widely used in various linear motion systems.

[0003] When machining arc spiral grooves on ball nuts, a spherical turning tool is required. The spherical turning tool needs to be replaced regularly to ensure the quality of the grooves. However, the current spherical turning tool requires the use of specific tools to complete the disassembly and assembly when replacing it. The disassembly and assembly process is cumbersome and time-consuming, resulting in long downtime. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a tool for processing arc spiral grooves of ball nuts to solve the problems raised in the above-mentioned background technology.

[0005] The cam is secured to the upper and lower surfaces of the workbench and is secured to the upper and lower surfaces of the workbench, and the cam is secured to the lower surface of the workbench and is secured to the upper and lower surfaces of the workbench.

[0006] The top end of the driving member is connected with the driving member to the rotation of the steering wheel, and the steering wheel is fixedly provided with a first end in front of the steering wheel, and the steering wheel is connected with the first and second steering wheels.

[0007] As an improvement: the positioning assembly includes a slide groove, a bidirectional screw, a slider, a second motor and a clamping block. A slide groove is provided on the upper side wall of the placement seat, and a bidirectional screw is rotatably provided between the two side walls of the slide groove. Two symmetrically distributed sliders are provided on the threaded sleeve of the bidirectional screw, and the sliders slide in cooperation with the slide groove. A second motor is installed on one side wall of the placement seat, and the output shaft end of the second motor extends into the slide groove and is fixedly connected to one end of the bidirectional screw. A clamping block is fixedly connected to the upper side wall of the slider.

[0008] As an improvement: a ratchet is fixedly sleeved on the rod wall of the rotating rod located outside the connecting seat, and a pawl that cooperates with the ratchet is rotatably connected to the bottom wall of the connecting seat.

[0009] As an improvement: four positioning grooves are arranged on the inner wall of the tool holder.

[0010] As an improvement: an L-shaped support plate is fixedly connected to the upper side wall of the clamping block, a screw sleeve is embedded on the upper side wall of the L-shaped support plate, a second screw rod is inserted into the inner thread of the screw sleeve, the upper end of the second screw rod is fixedly connected to the second knob and the lower end is fixedly connected to the pressure plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Through the coordination among the cavity, the rotating rod, the first knob, the active bevel gear, the notch, the partition, the positioning block, the first screw, the moving plate, the push rod and the driven bevel gear, the replacement process of the spherical turning tool is convenient and quick, the downtime due to the replacement of the spherical turning tool is shortened, the processing efficiency is ensured, and it is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic diagram of the overall structure of a tool for processing arc spiral grooves in ball nuts according to the present invention;

[0014] Figure 2 This is a schematic diagram of the mounting plate structure of a tool for processing arc spiral grooves in ball nuts according to the present invention;

[0015] Figure 3 This is a schematic diagram of the tool holder structure of a tool for processing arc spiral grooves in ball nuts according to the present invention;

[0016] Figure 4 This is a cross-sectional view of the cavity of a tool for processing arc spiral grooves in a ball nut according to the present invention;

[0017] Figure 5 This is a schematic diagram of the ratchet structure of a tool for processing arc spiral grooves in ball nuts according to the present invention;

[0018] Figure 6 This is a schematic diagram of the structure of a placement seat for a tool for processing arc spiral grooves in a ball nut according to the present invention;

[0019] As shown in the figure:

[0020] 100, workbench; 110, bracket; 120, lifting plate; 130, cylinder; 140, mounting plate; 150, first motor; 160, connecting seat; 170, tool holder; 180, ball turning tool; 200, connecting assembly; 190, placement seat; 300, positioning assembly; 210, cavity; 220, rotating rod; 230, first knob; 240, driving bevel gear; 250, notch; 260, partition; 270, positioning block; 280, first screw; 281, moving plate; 282, push rod; 290, driven bevel gear; 310, slide; 320, bidirectional screw; 330, slider; 340, second motor; 350, clamping block; 221, ratchet; 222, pawl; 171, positioning groove; 351, L-shaped support plate; 352, screw sleeve; 353, second screw; 354, second knob; 355, pressure plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features and purpose effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front," "back," "both sides," "one side," "the other side," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1 and Figure 2 As shown, a processing tool for the circular arc spiral groove of a ball nut includes a workbench 100, a bracket 110 is fixedly connected to the rear of the upper side wall of the workbench 100, a lifting plate 120 is slidably connected between the inner walls of both sides of the bracket 110, a cylinder 130 is installed on the upper outer wall of the bracket 110, the telescopic end of the cylinder 130 passes through the upper side wall of the bracket 110 and is fixedly connected to the lifting plate 120, a mounting plate 140 is fixedly connected to the front side wall of the lifting plate 120, a first motor 150 is installed on the front of the upper side wall of the mounting plate 140, the output shaft end of the first motor 150 passes through the mounting plate 140 and is fixedly connected to the connecting The connecting seat 160 is provided with a tool holder 170 on the outer side of the connecting seat 160, and four spherical turning tools 180 are arranged on the outer wall of the tool holder 170. The output shaft of the first motor 150 can drive the connecting seat 160 to rotate. The rotation of the connecting seat 160 will drive the tool holder 170 and the spherical turning tool 180 to rotate. Then the telescopic end of the cylinder 130 pushes the lifting plate 120 to drive the mounting plate 140 to move downward, so that the spherical turning tool 180 slots the ball nut. A connecting assembly 200 is provided in the connecting seat 160, and a placement seat 190 is also fixedly connected to the upper side wall of the workbench 100, and a positioning assembly 300 is provided on the placement seat 190.

[0025] Specifically, such as Figure 4As shown, a processing tool for the arc spiral groove of a ball nut, the connecting assembly 200 includes a cavity 210, a rotating rod 220, a first knob 230, an active bevel gear 240, a notch 250, a partition 260, a positioning block 270, a first screw 280, a movable plate 281, a push rod 282 and a driven bevel gear 290, the connecting seat 160 has a cavity 210 inside, and a rotating rod 220 is rotatably provided on the upper side wall of the cavity 210, the lower end of the rotating rod 220 extends to the bottom of the connecting seat 160 and is fixedly connected to the first knob 230, and the rod wall of the rotating rod 220 is fixedly sleeved with an active bevel gear 240 , four notches 250 are provided on the side wall of the cavity 210, and a partition 260 is fixedly connected inside the notch 250. A positioning block 270 is slidingly provided inside the notch 250 and on the side of the partition 260 away from the cavity 210. A first screw 280 is rotatably connected to a side wall of the partition 260 close to the cavity 210. The other end of the first screw 280 is fixedly connected to a driven bevel gear 290 meshing with the active bevel gear 240. A moving plate 281 is threadedly sleeved on the first screw 280. Two symmetrically distributed push rods 282 are fixedly connected to the side wall of the moving plate 281 close to the positioning block 270. The other end of the rod 282 slides through the partition 260 and is fixedly connected to the positioning block 270. When the spherical turning tool 180 needs to be replaced, the pawl 222 is toggled so that it no longer locks the ratchet 221, and then the first knob 230 is turned to drive the rotating rod 220 to rotate. The rotation of the rotating rod 220 can drive the active bevel gear 240 to rotate. The rotation of the active bevel gear 240 can make the driven bevel gear 290 drive the first screw 280 to rotate. The rotation of the first screw 280 can make the movable plate 281 move toward the direction of the cavity 210. Driven by the push rod 282, the positioning block 270 is disengaged from the positioning groove 1 on the tool holder 170. 71 and retract into the slot 250. After losing the limit of the positioning block 270, the tool holder 170 can be pulled down to be removed. When installing a new spherical turning tool 180, the new tool holder 170 is put on the connecting seat 160, and then the first knob 230 is reversed to drive the rotating rod 220 to reverse. After transmission, the first screw 280 is reversed, and the movable plate 281 will move toward the direction of the partition 260. The push rod 282 will push the positioning block 270 to be inserted into the positioning groove 171 on the tool holder 170. The tool holder 170 is fixed on the connecting seat 160 to complete the installation. The replacement method is convenient and fast, shortens the downtime, and is more practical.

[0026] Specifically, such as Figure 6The cam 330 is actuated to move the two ends of the cam 330 in a direction of rotation and the two ends of the cam 330 are in a forward position to move the two ends of the cam 330 in a forward position so as to enable the cam 330 to move in a reverse direction so as to prevent the cam 330 from sliding out of the forward position and thus causing the cam 330 to slide in and out of the forward position.

[0027] Specifically, such as Figure 5 As shown, a processing tool for the arc spiral groove of a ball nut is provided, wherein the rotating rod 220 is located on the rod wall outside the connecting seat 160 and is fixedly sleeved with a ratchet 221, and a pawl 222 that cooperates with the ratchet 221 is rotatably connected to the bottom wall of the connecting seat 160. The ratchet 221 cooperates with the pawl 222 to lock the rotating rod 220 to prevent it from rotating due to external force, causing the positioning block 270 to move.

[0028] Specifically, such as Figure 3 As shown, a tool for processing arc spiral grooves in ball nuts is provided, and four positioning grooves 171 are arranged on the inner wall of the tool holder 170 .

[0029] Specifically, such as Figure 6 As shown, a processing tool for the circular arc spiral groove of a ball nut is shown, an L-shaped support plate 351 is fixedly connected to the upper side wall of the clamping block 350, a screw sleeve 352 is embedded in the upper side wall of the L-shaped support plate 351, a second screw 353 is inserted into the internal thread of the screw sleeve 352, the upper end of the second screw 353 is fixedly connected to a second knob 354 and the lower end is fixedly connected to a pressure plate 355, rotating the second knob 354 can drive the second screw 353 to rotate, and when the second screw 353 rotates, it will move downward under the action of the screw sleeve 352, so that the pressure plate 355 will press the lower edge of the ball nut to improve the fixing effect.

[0030] When the utility model is implemented, the ball nut is placed on the placement seat 190, and then the second motor 340 is started. The output shaft of the second motor 340 can drive the bidirectional screw 320 to rotate. When the bidirectional screw 320 rotates, the two sliders 330 can drive the clamping blocks 350 to approach each other, so that the two clamping blocks 350 clamp the ball nut tightly. Then, the second knob 354 is turned to drive the second screw 353 to rotate. When the second screw 353 rotates, it will move downward under the action of the screw sleeve 352, so that the pressure plate 355 can press the ball nut. The lower edge of the nut is pressed tightly, which greatly improves the fixing effect and prevents the ball nut from deflecting during slotting. Then, the first motor 150 is started, and the output shaft of the first motor 150 can drive the connecting seat 160 to rotate. The rotation of the connecting seat 160 will drive the tool holder 170 and the spherical turning tool 180 to rotate. Then, the telescopic end of the cylinder 130 pushes the lifting plate 120 to drive the mounting plate 140 to move downward, so that the spherical turning tool 180 slots the ball nut. When the spherical turning tool 180 needs to be replaced, the ratchet 222 is toggled so that it no longer engages the ratchet. The wheel 221 is locked, and then the first knob 230 is turned to drive the rotating rod 220 to rotate. The rotation of the rotating rod 220 can drive the active bevel gear 240 to rotate. The rotation of the active bevel gear 240 can make the driven bevel gear 290 drive the first screw 280 to rotate. The rotation of the first screw 280 can make the movable plate 281 move toward the direction of the cavity 210. Driven by the push rod 282, the positioning block 270 is separated from the positioning groove 171 on the tool holder 170 and retracted into the notch 250. After losing the limit of the positioning block 270, pull it downward. The tool holder 170 can be removed. When installing a new spherical turning tool 180, the new tool holder 170 is put on the connecting seat 160, and then the first knob 230 is reversed to drive the rotating rod 220 to reverse. After transmission, the first screw 280 is reversed, and the movable plate 281 will move toward the direction of the partition 260. The push rod 282 will push the positioning block 270 to insert into the positioning groove 171 on the tool holder 170. The tool holder 170 is fixed on the connecting seat 160 to complete the installation. The replacement method is convenient and fast, shortens the downtime, and is more practical.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A tool for processing arc spiral grooves in ball nuts, comprising a workbench (100), characterized in that: A bracket (110) is fixedly connected to the rear of the upper side wall of the workbench (100), and a lifting plate (120) is slidably connected between the inner walls of both sides of the bracket (110). A cylinder (130) is installed on the upper outer wall of the bracket (110), and the telescopic end of the cylinder (130) passes through the upper side wall of the bracket (110) and is fixedly connected to the lifting plate (120). A mounting plate (140) is fixedly connected to the front side wall of the lifting plate (120), and a first mounting plate (140) is installed on the front of the upper side wall of the mounting plate (140). The motor (150) is provided with a first motor (150), wherein the output shaft end of the first motor (150) passes through the mounting plate (140) and is fixedly connected to the connecting seat (160), the outer side of the connecting seat (160) is provided with a tool holder (170), the outer side wall of the tool holder (170) is provided with four spherical turning tools (180), a connecting assembly (200) is provided in the connecting seat (160), and a placement seat (190) is also fixedly connected to the upper side wall of the workbench (100), and a positioning assembly (300) is provided on the placement seat (190).

2. A tool for processing arc spiral grooves in ball nuts according to claim 1, characterized in that: The connecting assembly (200) comprises a cavity (210), a rotating rod (220), a first knob (230), a driving bevel gear (240), a notch (250), a partition (260), a positioning block (270), a first screw rod (280), a movable plate (281), a push rod (282) and a driven bevel gear (290). The connecting seat (160) has a cavity (210) inside. The rotating rod (220) is rotatably provided on the upper side wall of the cavity (210). The lower end of the rotating rod (220) extends to the bottom of the connecting seat (160) and is fixedly connected to the first knob (230). The driving bevel gear (240) is fixedly sleeved on the rod wall of the rotating rod (220). Four notches (250) are arranged on the side wall of the cavity (210). A partition (260) is fixedly connected to the inside of the notch (250), and a positioning block (270) is slidably provided inside the notch (250) and located on the side of the partition (260) away from the cavity (210). A first screw (280) is rotatably connected to a side wall of the partition (260) close to the cavity (210), and the other end of the first screw (280) is fixedly connected to a driven bevel gear (290) meshing with the active bevel gear (240). A movable plate (281) is threadedly sleeved on the first screw (280), and two symmetrically distributed push rods (282) are fixedly connected to a side wall of the movable plate (281) close to the positioning block (270), and the other end of the push rod (282) slides through the partition (260) and is fixedly connected to the positioning block (270).

3. A tool for machining arc spiral grooves in ball nuts according to claim 1, characterized in that: The positioning assembly (300) includes a slide groove (310), a bidirectional screw (320), a slider (330), a second motor (340) and a clamping block (350). A slide groove (310) is provided on the upper side wall of the placement seat (190). A bidirectional screw (320) is rotatably provided between the two side walls of the slide groove (310). Two symmetrically distributed sliders (330) are threadedly sleeved on the bidirectional screw (320). The sliders (330) are slidably matched with the slide groove (310). A second motor (340) is installed on one side wall of the placement seat (190). The output shaft end of the second motor (340) extends into the slide groove (310) and is fixedly connected to one end of the bidirectional screw (320). A clamping block (350) is fixedly connected to the upper side wall of the slider (330).

4. A tool for machining arc spiral grooves in ball nuts according to claim 2, characterized in that: The rotating rod (220) is located on the rod wall outside the connecting seat (160) and is fixedly sleeved with a ratchet (221); the bottom wall of the connecting seat (160) is rotatably connected to a ratchet pawl (222) that matches the ratchet (221).

5. A tool for machining arc spiral grooves in ball nuts according to claim 2, characterized in that: Four positioning grooves (171) are arranged on the inner wall of the tool holder (170).

6. A tool for machining arc spiral grooves in ball nuts according to claim 3, characterized in that: An L-shaped support plate (351) is fixedly connected to the upper side wall of the clamping block (350), a screw sleeve (352) is embedded in the upper side wall of the L-shaped support plate (351), a second screw rod (353) is inserted into the internal thread of the screw sleeve (352), and the upper end of the second screw rod (353) is fixedly connected to a second knob (354) and the lower end is fixedly connected to a pressure plate (355).

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