Rotation angle adjusting device

Abstract

The utility model discloses a rotation angle adjusting device, which relates to the technical field of precision detection and measurement equipment, and comprises a bottom plate, a main rotating shaft device and a linear driving device, and the main rotating shaft device and the linear driving device are respectively and fixedly arranged on the upper surfaces of the two sides of the bottom plate. The main rotating shaft device comprises a rotating bearing seat fixedly installed on the bottom plate, a crossed roller bearing, a rotating shaft and a bearing pressing plate are connected into the rotating bearing seat, and the linear driving device comprises a linear module seat fixedly installed on the upper surface of the other side of the bottom plate. An output shaft of the servo motor penetrates into the linear module base and is fixedly connected with a ball screw, the outer surface of the ball screw is sleeved with a main sliding plate sleeve in a threaded mode, the upper surface of the main sliding plate sleeve is sequentially connected with a set of linear guide rails, an auxiliary sliding plate, an auxiliary rotating shaft, a bearing, a round nut and a rotating arm, and a bolt is connected into a threaded notch in a threaded mode. The device has the effect of ensuring high-precision rotation adjustment.

Description

Technical Field

[0001] The utility model relates to the technical field of precision detection and measurement equipment, in particular to a rotation angle adjustment device. Background Art

[0002] In the field of precision testing and measuring equipment, high-precision rotation angle adjustment mechanisms are required. The industry's mainstream method of directly driving the rotating axis through a servo motor can achieve accuracy that depends entirely on the resolution of the motor itself. In areas with extremely high precision requirements, this method often does not meet expectations. Utility Model Content

[0003] The purpose of the utility model is to provide a rotation angle adjustment device to solve the technical problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotation angle adjustment device, comprising a base plate, a main rotation axis device and a linear drive device, wherein the main rotation axis device and the linear drive device are respectively fixedly mounted on the upper surfaces of both sides of the base plate, the main rotation axis device comprises a rotation bearing seat fixedly mounted on the base plate, the interior of the rotation bearing seat is connected with a cross roller bearing, a rotation axis and a bearing pressure plate, the upper surface of the rotation bearing seat is pressed with the rotation axis fixedly mounted and connected with a bearing cover, the linear drive device comprises a linear module seat fixedly mounted on the upper surface of the other side of the base plate, one side surface of the linear module seat is fixedly mounted and connected with a servo motor, the output shaft of the servo motor passes through the interior of the linear module seat and is fixedly connected with a ball screw, the outer surface thread sleeve of the ball screw is provided with a main skateboard sleeve, the upper surface of the main skateboard sleeve is sequentially connected with a group of linear guide rails, auxiliary skateboards, auxiliary rotating shafts, bearings, round nuts and rotating arms, a group of threaded notches are correspondingly opened between the rotating shaft and the rotating arm, and bolts are threadedly connected in the threaded notches.

[0005] Optionally, the outer ring of the cross roller bearing is fixed on the rotating bearing seat, the inner ring of the rotating bearing seat is connected to the rotating shaft, the bearing cover fixes the outer ring of the cross roller bearing on the rotating bearing seat, and the bearing pressure plate fixes the inner ring of the cross roller bearing on the rotating shaft.

[0006] Optionally, the linear guide rails are installed on both sides of the upper surface of the main slide plate sleeve, the auxiliary slide plate is inserted and connected between the linear guide rails, and the auxiliary rotating shaft passes through the rotating arm to the inside of the main slide plate sleeve.

[0007] Optionally, the secondary rotating shaft is vertically mounted on the secondary slide plate, the rotating arm is connected to the secondary rotating shaft via the bearing, and the round nut fixes the bearing on the secondary rotating shaft.

[0008] Optionally, a group of slide grooves are symmetrically provided on both side surfaces of the linear module seat, and slide plates fixedly connected to both side surfaces of the main slide plate sleeve are slidably connected in the slide grooves.

[0009] Optionally, the cross roller bearing and the bearing are both angular contact ball bearings installed back to back.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model indirectly realizes a very small rotation angle through a larger-scale linear motion, thereby realizing extremely high-precision rotation angle adjustment. When the servo motor rotates one circle, the linear module translates forward a small lead distance, and this small distance in turn drives the rotating shaft to rotate an even smaller angle, thereby ensuring a high-precision rotation adjustment effect of the rotation angle.

[0012] Second, the utility model adopts a ball screw driven by a linear module seat, which effectively realizes more minute control due to the small lead of the precision ball screw, and further ensures a high-precision rotation adjustment effect of the rotation angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A magnified schematic diagram of the structure at center A;

[0015] Figure 3 It is an enlarged exploded schematic diagram of the main rotating shaft device structure in the utility model;

[0016] Figure 4 This is an enlarged exploded schematic diagram of a portion of the linear drive module structure in the utility model;

[0017] Figure 5 It is a cross-sectional view of part of the structure of the utility model.

[0018] In the figure: 1-base plate, 2-rotating bearing seat, 3-cross roller bearing, 4-bearing cover, 5-rotating axis, 6-bearing pressure plate, 7-linear module seat, 9-linear guide, 10-auxiliary slide, 11-auxiliary rotating shaft, 12-bearing, 13-round nut, 14-rotating arm, 15-servo motor, 16-threaded notch, 17-main slide sleeve, 18-bolt, 19-ball screw, 20-slideway, 21-slide. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] For example, see Figures 1 to 5 The utility model provides a rotation angle adjustment device, including a base plate 1, a main rotation axis device and a linear drive device, the main rotation axis device and the linear drive device are respectively fixedly mounted on the upper surfaces of both sides of the base plate 1, the main rotation axis device includes a rotation bearing seat 2 fixedly mounted on the base plate 1, the interior of the rotation bearing seat 2 is connected with a cross roller bearing 3, a rotation axis 5 and a bearing pressure plate 6, the upper surface of the rotation bearing seat 2 is pressed with a rotation axis 5 fixedly mounted and connected with a bearing cover 4, the linear drive device includes a linear mold fixedly mounted on the upper surface of the other side of the base plate 1 The assembly seat 7 and one side surface of the linear module seat 7 are fixedly installed with a servo motor 15, the output shaft of the servo motor 15 passes through the interior of the linear module seat 7 and is fixedly connected with a ball screw 19, the outer surface of the ball screw 19 is threadedly sleeved with a main slide sleeve 17, and the upper surface of the main slide sleeve 17 is sequentially connected with a group of linear guide rails 9, a sub-slide 10, a sub-rotating shaft 11, a bearing 12, a round nut 13 and a rotating arm 14, and a group of threaded notches 16 are correspondingly opened between the rotating shaft 5 and the rotating arm 14, and the threaded notches 16 are threadedly connected with bolts 18.

[0021] The outer ring of the cross roller bearing 3 is fixed on the rotating bearing seat 2, the inner ring of the rotating bearing seat 2 is connected to the rotating shaft 5, the bearing cover 4 fixes the outer ring of the cross roller bearing 3 on the rotating bearing seat 2, the bearing pressure plate 6 fixes the inner ring of the cross roller bearing 3 on the rotating shaft 5, the linear guide rails 9 are installed on both sides of the upper surface of the main skateboard sleeve 17, the auxiliary skateboard 10 is inserted and connected between the linear guide rails 9, the auxiliary rotating shaft 11 passes through the rotating arm 14 to the inside of the main skateboard sleeve 17, the auxiliary rotating shaft 11 is vertically installed on the auxiliary skateboard 10, the rotating arm 14 is connected to the auxiliary rotating shaft 11 through the bearing 12, and the round nut 13 fixes the bearing 12 on the auxiliary rotating shaft 11.

[0022] More specifically, in this embodiment, the rotating shaft 5 of the main rotating device can rotate around its vertical axis; the moving parts of the linear drive device can move forward and backward in the horizontal direction. Specifically, a very small rotation angle is indirectly achieved through a larger-scale linear motion, thereby achieving extremely high-precision rotation angle adjustment. When the output shaft of the servo motor 15 drives the ball screw 19 to rotate one circle, the main skateboard sleeve 17, the auxiliary skateboard 10 and the rotating arm 14 mounted on the outside of the ball screw 19 will also move forward a small lead distance. This small distance is driven by the rotating arm 14 to drive the rotating shaft 5 to rotate a smaller angle, thereby ensuring a high-precision rotation adjustment effect of the rotation angle.

[0023] Since the lead of the precision ball screw 19 is small, more minute control can be achieved, further ensuring a high-precision rotation adjustment effect of the rotation angle.

[0024] The round nut 13 fixes the bearing 12 on the secondary rotating shaft 11 , and the secondary rotating shaft 11 is driven to rotate by the main sliding plate cover 17 and the secondary sliding plate 10 , thereby ensuring the stable rotation of the rotating arm 14 .

[0025] Furthermore, a group of slide grooves 20 are symmetrically provided on both side surfaces of the linear module seat 7 , and slide plates 21 fixedly connected to both side surfaces of the main slide plate sleeve 17 are slidably connected in the slide grooves 20 .

[0026] It is worth noting that the main slide plate cover 17 drives the slide plate 21 to perform linear motion in the slide groove 20, so as to ensure the stability and accuracy of the rotation angle adjustment.

[0027] Embodiment 2, based on the above embodiment:

[0028] Furthermore, the cross roller bearing 3 and the bearing 12 are both angular contact ball bearings installed back to back.

[0029] More specifically, in this embodiment, the cross roller bearing 3 and the bearing 12 are angular contact ball bearings installed back to back, which further ensures a higher rotation accuracy.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotation angle adjustment device, comprising a base plate (1), a main rotation axis device and a linear drive device, characterized in that: The main rotating shaft device and the linear drive device are respectively fixedly mounted on the upper surfaces of both sides of the base plate (1); the main rotating shaft device comprises a rotating bearing seat (2) fixedly mounted on the base plate (1); the interior of the rotating bearing seat (2) is connected to a cross roller bearing (3), a rotating shaft (5) and a bearing pressure plate (6); the upper surface of the rotating bearing seat (2) is pressed with the rotating shaft (5) fixedly mounted and connected to a bearing cover (4); the linear drive device comprises a linear module seat (7) fixedly mounted on the upper surface of the other side of the base plate (1); one side surface of the linear module seat (7) is fixedly mounted and connected to the bearing cover (4); A servo motor (15) is connected, and the output shaft of the servo motor (15) passes through the interior of the linear module seat (7) and is fixedly connected to a ball screw (19). The outer surface of the ball screw (19) is provided with a main slide sleeve (17) through a threaded sleeve. The upper surface of the main slide sleeve (17) is sequentially connected to a group of linear guide rails (9), a secondary slide (10), a secondary rotating shaft (11), a bearing (12), a round nut (13) and a rotating arm (14). A group of threaded notches (16) are correspondingly provided between the rotating shaft (5) and the rotating arm (14), and bolts (18) are connected to the inner threads of the threaded notches (16).

2. A rotation angle adjustment device according to claim 1, characterized in that: The outer ring of the cross roller bearing (3) is fixed on the rotating bearing seat (2), the inner ring of the rotating bearing seat (2) is connected to the rotating shaft (5), the bearing cover (4) fixes the outer ring of the cross roller bearing (3) on the rotating bearing seat (2), and the bearing pressure plate (6) fixes the inner ring of the cross roller bearing (3) on the rotating shaft (5).

3. The rotation angle adjustment device according to claim 1, characterized in that: The linear guide rails (9) are mounted on both sides of the upper surface of the main slide plate sleeve (17), the auxiliary slide plate (10) is inserted and connected between the linear guide rails (9), and the auxiliary rotating shaft (11) passes through the rotating arm (14) to the inside of the main slide plate sleeve (17).

4. A rotation angle adjustment device according to claim 3, characterized in that: The secondary rotating shaft (11) is vertically mounted on the secondary sliding plate (10); the rotating arm (14) is connected to the secondary rotating shaft (11) via the bearing (12); and the round nut (13) fixes the bearing (12) to the secondary rotating shaft (11).

5. The rotation angle adjustment device according to claim 1, characterized in that: A group of slide grooves (20) are symmetrically provided on the two side surfaces of the linear module seat (7), and slide plates (21) fixedly connected to the two side surfaces of the main slide plate sleeve (17) are slidably connected in the slide grooves (20).

6. The rotation angle adjustment device according to claim 1, characterized in that: The crossed roller bearing (3) and the bearing (12) are both angular contact ball bearings installed back to back.

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