A precision adjustment mechanism

Abstract

The present invention provides a precision adjustment mechanism, which relates to the field of adjustment equipment. The present invention includes a base frame, between the left and right ends of the base frame, a pitching seat is rotatably connected, a pitching adjustment block is fixedly connected to the rear end of the pitching seat, a pitching adjustment lever is rotatably connected to the base frame, and a pitching micrometer is also fixed on the base frame. The pitching micrometer is used to push the pitching adjustment lever to rotate, so as to drive the pitching seat to rotate through the pitching adjustment block. The front end of the pitching seat is connected to the base frame through Spring I; an azimuth groove is formed in the middle of the upper surface of the pitching seat, an azimuth seat is rotatably connected in the azimuth groove, an azimuth rod is fixedly connected to the side surface of the azimuth seat, an activity groove for the activity of the azimuth rod is formed in the side surface of the pitching seat, and an azimuth micrometer is fixed on the base frame. The azimuth micrometer is used to push the azimuth seat to rotate through the azimuth rod, and Spring II is also connected between the azimuth rod and the base frame. The present invention is small in volume, simple in adjustment, high in precision, smooth in adjustment, free of backlash in adjustment, and good in precision.

Description

Technical Field

[0001] The present invention relates to the field of adjustment devices, and particularly to a precision adjustment mechanism. Background Art

[0002] When detecting optical elements, it is necessary to adjust the angle, such as tests on the perpendicularity and parallelism of prisms, and debugging of optical lenses. When adjusting the angle of optical elements, an angle adjustment mechanism is required. However, the existing angle adjustment mechanisms have problems such as being not small enough, having insufficient precision, not being smooth enough in adjustment, and having backlash in adjustment, which affect the precision. To solve the above problems, a new angle adjustment mechanism needs to be designed. Summary of the Invention

[0003] The present invention provides a precision adjustment mechanism, which solves the defects of the existing angle adjustment mechanism for optical elements, such as being not small enough, having insufficient precision, not being smooth enough in adjustment, and having backlash in adjustment, which affect the precision.

[0004] The technical solution of the present invention is realized as follows:

[0005] An angle precision adjustment mechanism includes a base frame. A pitching seat is rotatably connected between the left and right ends of the base frame. A pitching adjustment block is fixedly connected to the rear end of the pitching seat. A pitching adjustment lever is rotatably connected to the base frame. The lower end of the pitching adjustment lever is rotatably connected to the base frame. A downward ball head is fixed to the upper part of the pitching adjustment lever. The ball head contacts the upper end surface of the pitching adjustment block. A pitching micrometer is also fixed to the base frame. The end of the micrometer screw of the pitching micrometer contacts the side surface of the pitching adjustment lever. The pitching micrometer is used to push the pitching adjustment lever to rotate, so as to drive the pitching seat to rotate through the pitching adjustment block. The front end of the pitching seat is connected to the base frame through at least one spring I; a circular azimuth groove is formed in the middle of the upper surface of the pitching seat. A circular azimuth seat is rotatably connected in the azimuth groove. An azimuth rod is fixedly connected to the side surface of the azimuth seat. An activity groove for the azimuth rod to move is formed in the side surface of the pitching seat. The azimuth rod extends out of the activity groove. An azimuth micrometer is fixed to the base frame. The end of the micrometer screw of the azimuth micrometer contacts the side surface of the azimuth rod. The azimuth micrometer is used to push the azimuth seat to rotate through the azimuth rod. A spring II opposite to the elongation direction of the azimuth micrometer is also connected between the azimuth rod and the base frame.

[0006] As a further technical solution, the pitching adjustment lever is a Z-shaped or L-shaped rod.

[0007] As a further technical solution, there are two spring Is, which are respectively arranged on both sides of the front end of the pitching seat. The activity groove is formed in the middle of the front end of the pitching seat.

[0008] As a further technical solution, the base frame includes a bottom plate. The left end and the right end of the bottom plate are respectively fixedly connected with a vertical left mounting plate and a right mounting plate. The left and right ends of the pitching seat are respectively rotatably connected to the left mounting plate and the right mounting plate. The pitching micrometer is fixed to the rear end of the left mounting plate, and the azimuth micrometer is fixed to the front end of the left mounting plate.

[0009] As a further technical solution, symmetric shaft holes are provided on the left mounting plate and the right mounting plate. A fixed shaft is arranged in the shaft hole. The fixed shaft is fixed in the shaft hole by a radial set screw. A conical boss is arranged on the inner end face of the fixed shaft. A ring of ball grooves I corresponding to the conical boss are provided at both the left and right ends of the pitching seat. A number of balls I in contact with the side face of the conical boss are arranged in the ball grooves I.

[0010] As a further technical solution, both ends of the spring I are respectively fixed to the pitching seat and the base frame by spring screws I. Both ends of the spring II are respectively fixed to the left mounting plate and the azimuth rod by spring screws II. The pitching adjustment block is fixed to the rear end face of the pitching seat by a first fixing screw. The azimuth rod is fixed to the front end face of the azimuth seat by a second fixing screw.

[0011] As a further technical solution, both the bottom and the neck of the azimuth seat are rotatably connected to the azimuth groove through a ring of balls II. An inclined surface in contact with the balls II is provided at both the bottom and the neck of the azimuth seat. A receiving space for accommodating the balls II is formed between the inclined surface and the azimuth groove. A ball positioning pressing ring is threadedly connected to the upper part of the azimuth groove. The ball positioning pressing ring is in clearance fit with the azimuth seat.

[0012] As a further technical solution, a ring of ball grooves II for positioning the balls II is provided at the bottom of the azimuth groove.

[0013] As a further technical solution, mounting screw holes for fixing a tooling fixture are provided on the upper surface of the azimuth seat.

[0014] As a further technical solution, the ball head is a ball head set screw. The ends of the micrometer screws of the pitching micrometer and the azimuth micrometer are hemispherical.

[0015] Advantages of the present invention: The present invention is small in size. The pitching of the pitching seat is adjusted by the pitching micrometer, and the horizontal rotation of the azimuth seat is adjusted by the azimuth micrometer. The adjustment is simple, with high precision and smooth adjustment. The springs I and II ensure no backlash in the adjustment and good precision. The pitching seat and the azimuth seat rotate through the balls I and balls II as a medium, and the rotation is smooth. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Isometric view of the present invention;

[0018] Figure 2 Isometric view of another angle of the present invention;

[0019] Figure 3 Top view of the present invention;

[0020] Figure 4 Is Figure 3 Cross-sectional view along line A-A in

[0021] Figure 5 Left view of the present invention;

[0022] Figure 6 Is Figure 5 Cross-sectional view along line B-B in

[0023] Reference numerals in the figure: base frame 1, bottom plate 11, left mounting plate 12, right mounting plate 13, fixed mounting hole 14, shaft hole 15, fixed shaft 16, conical boss 161, set screw 17, pitching seat 2, azimuth groove 21, ball ring groove II 211, movable groove 22, ball ring groove I 23, ball I 24, pitching adjustment block 31, pitching adjustment lever 32, ball head 33, spring I 34, spring screw I 341, pitching micrometer 4, azimuth seat 5, ball II 51, inclined surface 52, ball positioning pressure ring 53, mounting screw hole 55, azimuth rod 61, spring II 62, spring screw II 621, azimuth micrometer 7, optical element 8. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Refer to Figures 1-6, An angle precision adjustment mechanism, including a base frame 1. There is a pitching seat 2 rotatably connected between the left and right ends of the base frame 1. A pitching adjustment block 31 is fixedly connected to the rear end of the pitching seat 2. A pitching adjustment lever 32 is rotatably connected to the base frame 1. The lower end of the pitching adjustment lever 32 is rotatably connected to the base frame 1. A downward ball head 33 is fixed to the upper part of the pitching adjustment lever 32. The ball head 33 contacts the upper end surface of the pitching adjustment block 31. A pitching micrometer 4 is also fixed to the base frame 1. The end of the micrometer screw of the pitching micrometer 4 contacts the side surface of the pitching adjustment lever 32. The pitching micrometer 4 is used to push the pitching adjustment lever 32 to rotate, thereby driving the pitching seat 2 to rotate through the pitching adjustment block 31. The front end of the pitching seat 2 is connected to the base frame 1 through at least one spring I 34; A circular azimuth groove 21 is opened in the middle of the upper surface of the pitching seat 2. A circular azimuth seat 5 is rotatably connected in the azimuth groove 21. An azimuth rod 61 is fixedly connected to the side surface of the azimuth seat 5. An activity groove 22 for the activity of the azimuth rod 61 is opened on the side surface of the pitching seat 2. The azimuth rod 61 extends out of the activity groove 22. An azimuth micrometer 7 is fixed to the base frame 1. The end of the micrometer screw of the azimuth micrometer 7 contacts the side surface of the azimuth rod 61. The azimuth micrometer 7 is used to push the azimuth seat 5 to rotate through the azimuth rod 61. A spring II 62 opposite to the elongation direction of the azimuth micrometer 7 is also connected between the azimuth rod 61 and the base frame 1.

[0026] As a further implementation, the pitching adjustment lever 32 is a Z-shaped or L-shaped rod.

[0027] As a further implementation, there are two springs I 34, which are respectively arranged on both sides of the front end of the pitching seat 2. The activity groove 22 is opened in the middle of the front end of the pitching seat 2.

[0028] As a further implementation, the base frame 1 includes a bottom plate 11. The left end and the right end of the bottom plate 11 are respectively fixedly connected with vertical left mounting plates 12 and right mounting plates 13. The left and right ends of the pitching seat 2 are respectively rotatably connected to the left mounting plate 12 and the right mounting plate 13. The pitching micrometer 4 is fixed on the rear end of the left mounting plate 12. The azimuth micrometer 7 is fixed on the front end of the left mounting plate 12.

[0029] As a further implementation, a plurality of fixed mounting holes 14 are also opened on the bottom plate 11.

[0030] As a further embodiment, symmetric shaft holes 15 are provided on the left mounting plate 12 and the right mounting plate 13. A fixed shaft 16 is disposed in the shaft hole 15. The fixed shaft 16 is fixed in the shaft hole 15 by a radial set screw 17. A conical boss 161 is provided on the inner end face of the fixed shaft 16. A ring of ball grooves I 23 corresponding to the conical boss 161 are provided at both the left and right ends of the pitching seat 2. A number of balls I 24 in contact with the side face of the conical boss 161 are disposed in the ball grooves I 23.

[0031] As a further embodiment, both ends of the spring I 34 are respectively fixed to the pitching seat 2 and the base frame 1 by spring screws I 341. Both ends of the spring II 62 are respectively fixed to the left mounting plate 12 and the azimuth rod 61 by spring screws II 621. The pitching adjustment block 31 is fixed to the rear end face of the pitching seat 2 by a first fixing screw. The azimuth rod 61 is fixed to the front end face of the azimuth seat 5 by a second fixing screw.

[0032] As a further embodiment, both the bottom and the neck of the azimuth seat 5 are rotatably connected to the azimuth groove 21 by a ring of balls II 51. An inclined surface 52 in contact with the balls II 51 is provided at both the bottom and the neck of the azimuth seat 5. A receiving space for accommodating the balls II 51 is formed between the inclined surface 52 and the azimuth groove. A ball positioning press ring 53 is threadedly connected to the upper part of the azimuth groove 21. The ball positioning press ring 53 is in clearance fit with the azimuth seat 5.

[0033] As a further embodiment, a ring of ball grooves II 211 for positioning the balls II are provided at the bottom of the azimuth groove 21.

[0034] As a further embodiment, mounting screw holes 55 for fixing a tooling fixture are provided on the upper surface of the azimuth seat 5.

[0035] As a further embodiment, the ball head 33 is a ball head set screw. The ends of the micrometer screws of the pitching micrometer 4 and the azimuth micrometer 7 are hemispherical. The contact surface between the azimuth rod 61 and the end of the micrometer screw of the azimuth micrometer 7 requires a certain area to provide the sliding of the micrometer screw of the azimuth micrometer 7 in the transverse and longitudinal directions.

[0036] The working principle of the present invention:

[0037] During operation, the optical element 8 is placed on the upper surface of the azimuth seat 5, or the optical element 8 is fixed on the upper surface of the azimuth seat 5 through a tooling fixture. The tooling fixture is connected to the mounting screw hole 55 by screws. Then, rotate the knob on the pitch micrometer 4. The micrometer screw of the pitch micrometer 4 extends, pushing the pitch adjustment lever 32 to rotate. The ball head 33 of the pitch adjustment lever 32 slides along the upper surface of the pitch adjustment block 31 and presses down the pitch adjustment block 31. The pitch adjustment block 31 drives the pitch seat 2 to rotate backward along the base frame 1. The end of the micrometer screw of the azimuth micrometer 7 slides along the azimuth rod 61. When the knob of the pitch micrometer 4 rotates in the reverse direction, the micrometer screw of the pitch micrometer 4 retracts, and the pitch seat rotates forward under the action of the spring I 34. Then, rotate the knob on the azimuth micrometer 7. The micrometer screw of the azimuth micrometer 7 extends, pushing the azimuth rod 61. The azimuth rod 61 drives the azimuth seat 5 to rotate along the azimuth groove. When the knob on the azimuth micrometer 7 rotates in the reverse direction, the micrometer screw of the azimuth micrometer 7 retracts, and the azimuth seat 5 rotates in the reverse direction under the action of the spring II 62.

[0038] The invention has a small volume. The yaw of the pitch seat 2 is adjusted by the pitch micrometer 4, and the horizontal rotation of the azimuth seat 5 is adjusted by the azimuth micrometer 7. The adjustment is simple, with high precision and smooth adjustment. The springs I 34 and II 62 ensure that there is no backlash in the adjustment and the accuracy is good. The pitch seat 2 and the azimuth seat 5 rotate with the help of the balls I 24 and II 51 as the medium, and the rotation is smooth.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An angle precision adjustment mechanism, characterized in that: It includes a base frame. A pitching seat is rotatably connected between the left and right ends of the base frame. A pitching adjustment block is fixedly connected to the rear end of the pitching seat. A pitching adjustment lever is rotatably connected to the base frame. The lower end of the pitching adjustment lever is rotatably connected to the base frame. A downward ball head is fixed to the upper part of the pitching adjustment lever. The ball head contacts the upper end surface of the pitching adjustment block. A pitching micrometer is also fixed to the base frame. The end of the micrometer screw of the pitching micrometer contacts the side surface of the pitching adjustment lever. The pitching micrometer is used to push the pitching adjustment lever to rotate, thereby driving the pitching seat to rotate through the pitching adjustment block. The front end of the pitching seat is connected to the base frame by at least one spring I; A circular azimuth groove is formed in the middle of the upper surface of the pitching seat. A circular azimuth seat is rotatably connected in the azimuth groove. An azimuth rod is fixedly connected to the side surface of the azimuth seat. An activity groove for the azimuth rod to move is formed in the side surface of the pitching seat. The azimuth rod extends out of the activity groove. An azimuth micrometer is fixed to the base frame. The end of the micrometer screw of the azimuth micrometer contacts the side surface of the azimuth rod. The azimuth micrometer is used to push the azimuth seat to rotate through the azimuth rod. A spring II opposite to the elongation direction of the azimuth micrometer is also connected between the azimuth rod and the base frame.

2. The angle precision adjustment mechanism according to claim 1, characterized in that: The pitching adjustment lever is a Z-shaped or L-shaped rod.

3. The precision angle adjustment mechanism according to claim 1, characterized in that: There are two spring Is, which are respectively arranged on both sides of the front end of the pitching seat. The activity groove is formed in the middle of the front end of the pitching seat.

4. The precision angle adjustment mechanism according to claim 1, wherein: The base frame includes a bottom plate. A vertical left mounting plate and a right mounting plate are respectively fixedly connected to the left end and the right end of the bottom plate. The left and right ends of the pitching seat are respectively rotatably connected to the left mounting plate and the right mounting plate. The pitching micrometer is fixed to the rear end of the left mounting plate. The azimuth micrometer is fixed to the front end of the left mounting plate.

5. The angle precision adjustment mechanism according to claim 4, characterized in that: Symmetrical shaft holes are formed in the left mounting plate and the right mounting plate. A fixed shaft is arranged in the shaft holes. The fixed shaft is fixed in the shaft holes by radial set screws. A conical boss is arranged on the inner end surface of the fixed shaft. A circle of ball ring grooves I corresponding to the conical boss are formed at both the left and right ends of the pitching seat. A number of balls I contacting the side surface of the conical boss are arranged in the ball ring grooves I.

6. The angle precision adjustment mechanism according to claim 4, characterized in that: Both ends of the spring I are respectively fixed to the pitching seat and the base frame by spring screws I. Both ends of the spring II are respectively fixed to the left mounting plate and the azimuth rod by spring screws II. The pitching adjustment block is fixed to the rear end surface of the pitching seat by a first fixing screw. The azimuth rod is fixed to the front end surface of the azimuth seat by a second fixing screw.

7. The precision angle adjustment mechanism according to claim 1, characterized in that: Both the bottom and the neck of the azimuth seat are rotatably connected to the azimuth groove by a circle of balls II. An inclined surface contacting the balls II is arranged at both the bottom and the neck of the azimuth seat. A receiving space for accommodating the balls II is formed between the inclined surface and the azimuth groove. A ball positioning press ring is connected to the upper part of the azimuth groove by threads. The ball positioning press ring has a clearance fit with the azimuth seat.

8. The angle precision adjustment mechanism according to claim 7, characterized in that: A circle of ball ring grooves II for positioning the balls II is formed at the bottom of the azimuth groove.

9. The angle precision adjustment mechanism according to claim 1, wherein: Mounting screw holes for fixing a tooling fixture are formed on the upper surface of the azimuth seat.

10. An angle precision adjustment mechanism as described in claim 1, characterized in that: The ball head is a ball head set screw. The ends of the micrometer screws of the pitching micrometer and the azimuth micrometer are hemispherical.

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