Screw nut floating device of transmission assembly

Abstract

The utility model relates to the technical field of nut transmission, in particular to a nut floating device of a transmission assembly, which comprises a transmission assembly mounted on a base and a sliding table connected with a nut floating mechanism. The transmission assembly is fixed on the bottom surface of the sliding table through the nut floating mechanism, the nut is connected with some parts and can move up and down and left and right in the nut seat in a clearance mode, and the whole transmission assembly is installed on the base. Under the working conditions of long distance and heavy load, overload alarm or damage of a servo motor caused by non-concentricity of conventional hard connection of a nut and a nut seat can be realized, the position of the nut can be changed in real time by a nut floating mechanism, so that the concentric requirement is met, the hard strength is reduced, the transmission becomes smooth, and the potential safety hazard is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of nut transmission, in particular to a nut floating device of a transmission assembly. Background Art

[0002] The nut floating device is a mechanical device, which includes a screw, a nut connected to the screw and two guide rails arranged parallel to the screw. In addition, the device also includes a nut fixing seat, the nut is fixedly installed on one side of the nut fixing seat, and a shaft mounting hole is opened on the other side of the nut fixing seat. A floating shaft is slidably installed in the shaft mounting hole, and the other end of the floating shaft is fixedly connected with a connecting piece, which is also slidably connected to the two guide rails. This design allows the nut fixing seat to rotate around the floating shaft, thereby avoiding the problem of tension caused by the screw being not parallel to the guide rail when it is installed, and effectively preventing errors caused by the tension of the screw. With the popularization of modern automation in various industries, it is particularly important to reduce labor intensity, improve production efficiency, and ensure stable operation of production equipment with less human intervention.

[0003] The traditional method is to use hydraulic cylinders as power to push the slide, but the accuracy is difficult to control accurately, and manual repeated adjustment operations may be required. This seriously affects production efficiency, and a solution needs to be found.

[0004] Therefore, in view of the above-mentioned inability to ensure the concentricity between the nut of the transmission assembly and the nut seat on the slide, a nut floating device for the transmission assembly can be designed. The nut floating mechanism can be used to change the position of the nut in real time to meet the concentricity requirements, reduce rigidity and stiffness, make the transmission smooth, and eliminate safety hazards. Utility Model Content

[0005] In order to overcome the problem that the nut floating device cannot ensure the concentric consistency of the nut of the transmission assembly and the nut seat on the slide.

[0006] The technical solution of the utility model is: a nut floating device of a transmission assembly, including a ball screw, a transmission floating assembly and a stable support assembly, the transmission floating assembly includes a first nut floating sleeve, a second nut floating sleeve, a nut seat cover, a nut locking cover, a nut seat body, a limit groove, and a nut body; a first nut floating sleeve is arranged on the outside of the ball screw.

[0007] Preferably, the nut floating mechanism is fixed to the bottom surface of the slide, and the nut is displaceable up and down and left and right with clearance in the nut seat through connection with some parts. The entire transmission assembly is installed on the base. Under long-distance and heavy-load working conditions, the nut and the nut seat are conventionally hard-connected, and the servo motor overload alarm or component damage caused by non-concentricity may occur. The nut floating mechanism can change the nut position in real time to meet the concentricity requirements, reduce rigidity and stiffness, make the transmission smooth, and eliminate safety hazards.

[0008] Preferably, a second nut floating sleeve is provided at the side end of the first nut floating sleeve, the nut floating mechanism is fixed to the bottom surface of the slide, the nut body is connected with some structural parts and is displaceable up and down and left and right with a gap in the nut seat body, the entire transmission assembly is installed on the base, the first nut floating sleeve and the second nut floating sleeve are in the guide groove of the nut seat body, and pass through the shaft end of the nut body and are firmly attached to the flange end.

[0009] Preferably, a nut seat cover is provided at the side end of the second nut floating sleeve, and the three parts are connected together by bolts using a nut locking cover; then, the three-piece assembly is blocked in the nut seat body by the nut cover, the motor rotates clockwise, and the nut body is pushed to the right.

[0010] Preferably, a nut locking cover is fixedly installed on the side end of the nut seat cover; the nut seat body is snap-fitted and installed on the side end of the nut seat cover, and the first nut floating sleeve and the second nut floating sleeve are close to the nut seat body under the action of the nut body, and there is a gap between the nut seat body guide groove and the first nut floating sleeve and the second nut floating sleeve on the left and right, and up and down, which can ensure the concentric displacement fine-tuning space of the nut body during movement.

[0011] Preferably, a limiting groove is provided at the upper end of the nut seat body; the nut body is arranged between the first nut floating sleeve and the second nut floating sleeve, and the first nut floating sleeve and the second nut floating sleeve cannot rotate under the restriction of the nut seat body guide groove, that is, the nut body does not rotate.

[0012] Preferably, the stable support assembly includes a base, a limiting slide bar, a limiting slider, a transmission, a limiting mounting bar, and a slide; the limiting slide bar is fixedly welded to the upper end of the base, the servo motor rotates counterclockwise, the nut body is pushed in the opposite direction to the left, and the nut locking cover is close to the nut seat body cover under the action of the nut body, thereby driving the nut seat body and the slide to move to the left.

[0013] Preferably, the limiting slide bar is internally slidably connected to the limiting slider; the side end of the limiting slider is fixedly connected to the transmission; the upper end of the transmission is fixedly connected to the limiting mounting bar; the upper end of the limiting mounting bar is fixedly connected to the slide, and the first nut floating sleeve and the second nut floating sleeve cannot rotate under the restriction of the guide groove of the nut seat body, that is, the nut body does not rotate, and the servo motor can accurately move to the position of the specified distance.

[0014] Beneficial effects of the utility model:

[0015] 1. The nut floating mechanism is fixed to the bottom surface of the slide. The nut is connected to some parts and can be displaced up and down and left and right with clearance in the nut seat. The entire transmission assembly is installed on the base. Under long-distance and heavy-load working conditions, the nut and the nut seat are conventionally hard-connected, which may cause servo motor overload alarm or component damage due to non-concentricity. The nut floating mechanism can change the nut position in real time to meet the concentricity requirement, reduce rigidity and stiffness, make the transmission smoother, and eliminate safety hazards.

[0016] 2. The nut floating mechanism is fixed to the bottom surface of the slide. The nut body is connected with some structural parts and is movable up and down and left and right with clearance in the nut seat. The entire transmission assembly is installed on the base. The first nut floating sleeve and the second nut floating sleeve are in the guide groove of the nut seat body, and pass through the shaft end of the nut body and fit tightly against the flange end. The three parts are connected together by bolts using a nut locking cover; then, the three-piece assembly is blocked in the nut seat body with a nut blocking cover. The motor rotates clockwise, the nut body moves to the right, and the first nut floating sleeve and the second nut floating sleeve are close to the nut seat body under the action of the nut body;

[0017] 3. There are gaps between the nut seat guide groove and the first nut floating sleeve and the second nut floating sleeve on the left and right, and up and down, which can ensure the concentric displacement fine-tuning space of the nut body during movement, and the first nut floating sleeve and the second nut floating sleeve cannot rotate under the restriction of the nut seat guide groove, that is, the nut body does not rotate. The servo motor rotates counterclockwise, and the nut body pushes in the opposite direction to the left. The nut locking cover is close to the nut seat cover under the action of the nut body, thereby driving the nut seat body and the slide to move to the left; and the first nut floating sleeve and the second nut floating sleeve cannot rotate under the restriction of the nut seat guide groove, that is, the nut body does not rotate, and the servo motor can accurately move to the position of the specified distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the base of the utility model;

[0019] Figure 2 Shown is an exploded schematic diagram of the transmission floating assembly of the present utility model;

[0020] Figure 3 Shown is a schematic diagram of the second nut floating sleeve of the utility model;

[0021] Figure 4 Shown is a schematic diagram of the structure of the stable support component of the present invention.

[0022] Explanation of the accompanying drawings: 1. Ball screw; 201. First nut floating sleeve; 202. Second nut floating sleeve; 203. Nut seat cover; 204. Nut locking cover; 205. Nut seat body; 206. Limiting groove; 207. Nut body; 301. Base; 302. Limiting slide bar; 303. Limiting slider; 304. Transmitter; 305. Limiting mounting bar; 306. Slide. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See also Figures 1-4 , The utility model provides an embodiment: a nut floating device of a transmission assembly, including a ball screw 1, a transmission floating assembly and a stable support assembly, the transmission floating assembly includes a first nut floating sleeve 201, a second nut floating sleeve 202, a nut seat cover 203, a nut locking cover 204, a nut seat body 205, a limit groove 206, and a nut body 207; a first nut floating sleeve 201 is provided on the outside of the ball screw 1, and the nut floating mechanism is fixed to the bottom surface of the slide 306, and the nut is displaceable up and down and left and right with a gap in the nut seat through connection with some parts. The entire transmission assembly is installed on the base 301. Under long-distance and heavy-load working conditions, the nut and the nut seat are conventionally hard-connected, and the servo motor overload alarm or component damage caused by non-concentricity may occur. The nut floating mechanism can change the nut position in real time to meet the concentricity requirement, reduce hardness and make the transmission smooth, and eliminate safety hazards.

[0025] See also Figure 2-Figure 3 In this embodiment, a second nut floating sleeve 202 is provided at the side end of the first nut floating sleeve 201, a nut seat blocking cover 203 is provided at the side end of the second nut floating sleeve 202, and a nut locking cover 204 is fixedly installed at the side end of the nut seat blocking cover 203; a nut seat body 205 is clamped and installed at the side end of the nut seat blocking cover 203, and a limiting groove 206 is provided at the upper end of the nut seat body 205; a nut body 207 is provided between the first nut floating sleeve 201 and the second nut floating sleeve 202, and the nut floating mechanism is fixed to the bottom surface of the slide 306, and the nut body 207 is connected with some structural parts and is fixed on the nut. There is a gap in the nut body 205 for displacement up and down and left and right. The entire transmission assembly is installed on the base 301. The first nut floating sleeve 201 and the second nut floating sleeve 202 are in the guide groove of the nut body 205, and pass through the shaft end of the nut body 207 and fit tightly against the flange end. The three parts are connected together by bolts using a nut locking cover 204; then, the three-piece assembly is blocked in the nut body 205 with a nut seat cover 203. The motor rotates clockwise, and the nut body 207 is pushed to the right. The first nut floating sleeve 201 and the second nut floating sleeve 202 are close to the nut body 205 under the action of the nut body 207.

[0026] See also Figure 4 In this embodiment, the stable support assembly includes a base 301, a limiting slide bar 302, a limiting slider 303, a transmission 304, a limiting mounting bar 305, and a slide 306; the upper end of the base 301 is fixedly welded with a limiting slide bar 302, and the limiting slide bar 302 is internally slidably connected to the limiting slider 303; the side end of the limiting slider 303 is fixedly connected to the transmission 304; the upper end of the transmission 304 is fixedly connected to the limiting mounting bar 305; the upper end of the limiting mounting bar 305 is fixedly connected to the slide 306, and the guide groove of the nut seat body 205 and the first nut floating sleeve 201 and the second nut floating sleeve 202 have gaps on the left and right and up and down to ensure that the nut body 207 is in operation The concentric displacement fine-tuning space in motion, and the first nut floating sleeve 201 and the second nut floating sleeve 202 cannot rotate under the restriction of the guide groove of the nut seat body 205, that is, the nut body 207 does not rotate, the servo motor rotates counterclockwise, the nut body 207 pushes in the opposite direction to the left, and the nut locking cover 204 is close to the nut seat body 205 cover under the action of the nut body 207, thereby driving the nut seat body 205 and the slide 306 to move to the left; and the first nut floating sleeve 201 and the second nut floating sleeve 202 cannot rotate under the restriction of the guide groove of the nut seat body 205, that is, the nut body 207 does not rotate, and the servo motor can accurately move to the position of the specified distance.

[0027] When working, the nut floating mechanism is fixed to the bottom surface of the slide 306, and the nut body 207 is connected with some structural parts and is displaceable up and down and left and right with clearance in the nut seat body 205. The entire transmission assembly is installed on the base 301, and the first nut floating sleeve 201 and the second nut floating sleeve 202 are in the guide groove of the nut seat body 205, and pass through the shaft end of the nut body 207 and fit tightly with the flange end, and the three parts are connected together by bolts with the nut locking cover 204; then, the three-piece assembly is blocked in the nut seat body 205 with the nut seat cover 203, the motor rotates clockwise, and the nut body 207 is pushed to the right. The first nut floating sleeve 201 and the second nut floating sleeve 202 are close to the nut seat body 205 under the action of the nut body 207, and the guide groove of the nut seat body 205 and the first nut floating sleeve 201 There are gaps between the first nut floating sleeve 201 and the second nut floating sleeve 202 on the left and right, and on the top and bottom, which can ensure the concentric displacement fine-tuning space of the nut body 207 during movement, and the first nut floating sleeve 201 and the second nut floating sleeve 202 cannot rotate under the restriction of the guide groove of the nut seat body 205, that is, the nut body 207 does not rotate, the servo motor rotates counterclockwise, and the nut body 207 pushes in the opposite direction to the left, and the nut locking cover 204 is close to the nut seat body 205 cover under the action of the nut body 207, thereby driving the nut seat body 205 and the slide 306 to move to the left; and the first nut floating sleeve 201 and the second nut floating sleeve 202 cannot rotate under the restriction of the guide groove of the nut seat body 205, that is, the nut body 207 does not rotate, and the servo motor can accurately move to the position of the specified distance.

[0028] Through the above steps, the nut floating mechanism is fixed to the bottom surface of the slide 306, and the nut is displaceable up and down and left and right with clearance in the nut seat by connecting with some parts. The entire transmission assembly is installed on the base 301. Under long-distance and heavy-load working conditions, the nut and the nut seat are conventionally hard-connected, and the servo motor overload alarm or component damage caused by non-concentricity may occur. The nut floating mechanism can change the nut position in real time to meet the concentricity requirements, reduce rigidity and stiffness, make the transmission smooth, and eliminate safety hazards.

Claims

1. A nut floating device of a transmission assembly, comprising a ball screw (1); characterized in that: The invention also includes a transmission floating assembly and a stable support assembly, wherein the transmission floating assembly includes a first nut floating sleeve (201), a second nut floating sleeve (202), a nut seat blocking cover (203), a nut locking cover (204), a nut seat body (205), a limiting groove (206), and a nut body (207); the first nut floating sleeve (201) is arranged on the outside of the ball screw (1), and the second nut floating sleeve (207) is arranged on the side end of the first nut floating sleeve (201). 202), a nut seat cover (203) is provided at the side end of the second nut floating sleeve (202), and a nut locking cover (204) is fixedly installed at the side end of the nut seat cover (203); a nut seat body (205) is snap-fitted and installed at the side end of the nut seat cover (203), and a limiting groove (206) is provided at the upper end of the nut seat body (205); a nut body (207) is provided between the first nut floating sleeve (201) and the second nut floating sleeve (202).

2. The nut floating device of a transmission assembly according to claim 1, characterized in that: The stable support assembly comprises a base (301), a limiting slide bar (302), a limiting slider (303), a transmission (304), a limiting mounting bar (305), and a slide table (306); the limiting slide bar (302) is fixedly welded to the upper end of the base (301).

3. The nut floating device of a transmission assembly according to claim 2, characterized in that: The limiting slide bar (302) is internally slidably connected to the limiting slider (303); the side end of the limiting slider (303) is fixedly connected to the transmission device (304); the upper end of the transmission device (304) is fixedly connected to the limiting installation bar (305); the upper end of the limiting installation bar (305) is fixedly connected to the slide platform (306).

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