CN100405106C

CN100405106C - Pitch adjusting table

Info

Publication number: CN100405106C
Application number: CNB2005101190625A
Authority: CN
Inventors: 谭进国; 何欣; 翟岩
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2005-12-08
Filing date: 2005-12-08
Publication date: 2008-07-23
Anticipated expiration: 2025-12-08
Also published as: CN1896788A

Abstract

The invention belongs to the precise mechanism field and relates to the precise adjusting device used in the minitype optical system or the optical component. It supplies a pitching adjusting platform, including a coping component, a chest base, a lead screw, a nut, two shaft bearings, a hand wheel, a locking nail, a locking slice, two springs, two stops, two stoppers and two scale slices. It is characterized in that it solves the problem of small adjusting range by the special design of the arc contact surface curve between the sliding block and the chest base. It can reach the adjusting quality of 30 degrees. All the accessories of the adjusting platform are processed simply so that the cost is decreased. It is proved that the pitching adjusting platform of the invention is processed simply and has high rigidity, small volume, wide adjusting range, high adjusting precision and good stability. It meets the application requirement of the adjusting range in practice.

Description

Pitch adjusting table

Technical field

The invention belongs to the precision optical machinery field, relate to the precision adjustment unit that is used for compact optical system or optical device.

Background technology

In the debuging of optical system, often to carry out the pitching adjustment to small-sized interferometer or compensator etc.The product range of adjustment that some producers provide is little, and the rigidity of structure is low, and is on the high side, can't satisfy in the test requirement to this product range of adjustment.

Summary of the invention

Background technology exists range of adjustment little, the rigidity of structure is low, can not satisfy in the test problems such as requirement to this product range of adjustment, in order to address the above problem, the objective of the invention is to, the pitch adjusting table that a kind of range of adjustment is big, volume is little, rigidity is high, be easy to process is provided.

The present invention mainly includes: cap assembly, block, leading screw, nut, two bearings, handwheel, two stops, two springs, two blocks, locking nail, stay, two scale plates; Wherein cap assembly comprises two side plates, two slide blocks, top cover, guide pillar, guide pillar support.Two side plates in cap assembly are separately fixed at the top cover both sides, and the circular arc of two slide blocks contacts with two arc surfaces of block respectively, and two slide blocks are fixed on the top cover inboard; Guide pillar is fixed on the guide pillar support, the guide pillar support is fixed on the top cover again.On block, nut and leading screw constitute screw pair by two bearing fixing at the leading screw two ends, and guide pillar is arranged in the groove of nut, and handwheel is fixed on the leading screw end; The bottom of two blocks is fixed on the block, and two stops are separately fixed on the top of two blocks; Stay is fixed on the left side of block, and locking nail is fixed on the side plate in cap assembly left side; Two scale plates are separately fixed on block right side and the cap assembly right side side plate; Two both ends of the spring are separately fixed on block and the top cover.

Principle of work of the present invention is as follows: rotation hand wheel, drive the leading screw rotation, and drive nut makes nut along the leading screw axially-movable, and nut is stirred guide pillar, makes the cap assembly motion; Slide block in the cap assembly contacts with the block arc surface, and the movement locus of cap assembly is a circular arc, thereby has realized pitch regulation.

The invention has the advantages that by arc contact surface curve and carry out specific design, solved the little problem of range of adjustment, can reach 30 ° adjustment amount slide block and block; All processing parts difficulty of processing of adjustment platform of the present invention are low simultaneously, are easy to reduce cost.Through repeatedly using proof, pitch adjusting table of the present invention is easy to processing, rigidity height, volume is little, range of adjustment is big, the degree of regulation height, and good stability can satisfy in testing the request for utilization to the product range of adjustment.

Description of drawings

Fig. 1 is the cut-open view of the present invention along the leading screw axis

Fig. 2 is the cut-open view of the present invention along A-A among Fig. 1

Fig. 3 is the cap assembly view among the present invention

Embodiment

Embodiment comprises cap assembly 1 as shown in Figure 1, 2, 3, block 2, leading screw 3, nut 4,

bearing

5,6, handwheel 7, locking nail 8, stay 9,

spring

10,11,

stops

12,13,

block

14,15,

scale plate

16,17; Wherein cap assembly 1 comprises

side plate

18,19,, top cover 20, guide pillar support 21, guide pillar 22,

slide block

23,24

In the embodiment of the invention:

Block 2, handwheel 7, locking nail 8, scale plate 16, scale plate 17, side plate 18, side plate 19, top cover 20, guide pillar support 21 adopt No. 45 steel;

Leading screw 3, guide pillar 22 adopt steel 40Cr or GCr15;

Nut 4 adopts copper ZQA19-4;

Bearing 5 and 6 is bought in market according to fit dimension;

Stay 9 adopts steel 65Mn or No. 45 steel;

Spring 10 and spring 11 adopt carbon spring steel wires;

Stops 12 and stops 13, block 14 and block 15 adopt aluminium 2A12 or No. 45 steel.

Slide block 23 and slide block 24 adopt copper H62;

Rotation hand wheel 7, drive leading screw 3 rotations, because nut 4 constitutes screw pair with leading screw 3, leading screw 3 rotations make nut 4 along leading screw 3 axially-movables, and leading screw 3 and nut 4 all adopt fine thread, and fine thread will be selected pitch according to the accuracy requirement that the pitch adjusting table trace is adjusted, pitch can be selected 1mm or 0.7mm, be easy to realize the trace conciliation like this, leading screw 3 and nut 4 will carry out facing-up, catching phenomenon can not occur when they are rotated mutually.The upper end of nut 4 is designed to the form of shift fork, guide pillar 22 places the groove of nut 4, when leading screw 3 rotates, nut 4 just can be stirred guide pillar 22 along leading screw 3 axial directions, realize the motion of cap assembly 1, nut 4 and guide pillar 22 will have certain clearance, but the gap is little, just do not have bigger backlash so in use.Under the effect of spring 10 and spring 11 pulling force, slide block 23 in the pitch adjusting table in the cap assembly 1 and the head circular arc of slide block 24 contact with circular arc on the block 2, make the radius of their circular arcs identical by specific design, and the circle center line connecting of these circular arcs guarantees that with job operation their contacts area are more than 75% on same straight line.Consider the factor of friction, the material of slide block 23 and slide block 24 is copper H62, and block 2 is to adopt No. 45 steel.Locking nail 8 on the side plate 18 in cap assembly 1 when pitch adjusting table is adjusted to the tram, screws locking nail 8, and locking nail 8 is pressed abd fixed on the stay 9 on base 2 left sides, prevents cap assembly 1 play; Fixing scale plate 16 on the side plate 19 of cap assembly 1, the fixing scale plate 17 in right side when cap assembly 1 motion, is determined adjustment amount with the scale of correspondence on the base 2.The effect of block 14 and block 15 is that slide block 23 and slide block 24 are carried out spacing on the horizontal direction vertical with leading screw 3; The effect of stops 12 and stops 13 is that anti-limited slip block 23 and slide block 24 disengage with block 2.

Claims

1. pitch adjusting table is characterized in that: include cap assembly (1), block (2), leading screw (3), nut (4), two bearings (5,6), handwheel (7), locking nail (8), stay (9), two springs (10,11), two stops (12,13), two blocks (14,15), two scale plates (16,17); Wherein cap assembly (1) comprises two side plates (18,19), top cover (20), guide pillar support (21), guide pillar (22), two slide blocks (23,24), two side plates (18,19) in cap assembly (1) are separately fixed at the both sides of top cover (20), two slide blocks (23,24) are fixed on the inboard of top cover (20), and the circular arc of two slide blocks (23,24) contacts with two arc surfaces of block (2) respectively; Guide pillar (22) is fixed on the guide pillar support (21), guide pillar support (21) is fixed on the top cover (20) again; Leading screw (3) two ends are fixed on the block (2) by two bearings (5,6), and nut (4) constitutes screw pair with leading screw (3), and guide pillar (22) is arranged in the groove of nut (4), and handwheel (7) is fixed on leading screw (3) end; The bottom of two blocks (14,15) is fixed on the block (2), and two stops (12,13) are separately fixed on the top of two blocks (14,15); Stay (9) is fixed on the left side of block (2), and locking nail (8) is fixed on the side plate (18) of cap assembly (1); Scale plate (16) is fixed on the side plate (19) of cap assembly (1), and scale plate (17) is fixed on block (2) right side; Two springs (10,11) two ends are separately fixed on block (2) and the top cover (20).

2. pitch adjusting table according to claim 1 is characterized in that: the circular arc of two slide blocks (23,24) contacts with two arc surfaces of block (2), and the radius of two circular arcs is identical.