CN100495103C - Locking mechanism of sampling reflector driving platform - Google Patents

Abstract

A locking mechanism for a sampling reflector drive platform, characterized in that the locking mechanism is composed of a traction electromagnet, a sheet-shaped strong magnet and a control power supply, the traction electromagnet is installed on the side of the support plate of the sampling reflector drive platform relative to the ball screw of the sampling reflector drive platform, the sheet-shaped strong magnet is fixed to the head of the traction rod of the traction electromagnet, the traction electromagnet is connected to a control power supply, the traction electromagnet has a restoring spring, when the control power supply is disconnected, the sheet-shaped strong magnet (under the action of the restoring spring of the traction electromagnet) adsorbs and fixes the ball screw. The invention has the characteristics of stable locking performance, simple structure and convenient operation.

Description

Locking Mechanism of Sampling Mirror Driving Platform

technical field

The invention relates to a sampling mirror driving platform, in particular to a locking mechanism of the sampling mirror driving platform.

Background technique

The sampling mirror is applied to the Shanghai Institute of Optics and Mechanics Shenguang III "Beam Sampling Conversion Component" project to complete the sampling conversion function of the optical path. As shown in Figure 1, the sampling mirror system consists of supporting guide rail pair (including guide rail, slider, guide rail seat) 1, 9, support plate 2, bottom plate 3, ball screw pair 4 (including ball screw, bushing, wire Rod seat), stepper motor 5, motor seat 6, driving platform locking mechanism 7 and sampling mirror 8, the system works in an approximate vacuum environment. When the system starts to work, the stepper motor 5 drives the ball screw pair 4 to run, thereby driving the support plate 2 to move, the sampling mirror 8 is fixed on the support plate 2, and moves to the beam sampling position with the support plate 2, at this time the stepping The motor 5 stops working, and the optical path experiment is started. The experiment generally takes several hours, during which the sampling reflector 8 is required to keep a fixed position. Since the sampling system works in an approximate vacuum environment and has poor heat dissipation conditions, the stepper motor 5 cannot run for a long time, and must stop running after the sampling reflector 8 reaches the sampling position, so the locking of the ball screw pair 4 cannot be realized. During use, it is found that after a certain period of time, the ball screw pair 4 will have a certain position drift, which will cause the sampling reflector 8 to deviate from the center of the optical path, which will adversely affect the entire beam sampling conversion assembly.

Contents of the invention

The purpose of the present invention is to provide a locking mechanism for the sampling mirror driving platform, which should have the characteristics of stable performance, simple structure and convenient operation.

Technical scheme of the present invention is:

A locking mechanism for a sampling reflector driving platform, characterized in that the locking mechanism is composed of a traction electromagnet, a sheet-shaped strong magnet and a control power supply, and is located on the side of the support plate of the sampling reflector driving platform relative to the sampling The ball screw of the ball screw pair of the mirror driving platform is equipped with the traction electromagnet, and the sheet-shaped strong magnet is fixed on the head of the traction rod of the traction electromagnet, and the traction electromagnet is connected with the A control power supply is connected, and the traction electromagnet has a recovery spring. When the control power supply is disconnected, the sheet-shaped strong magnet) will move the ball wire under the action of the recovery spring of the traction electromagnet. The rod is fixed by adsorption.

A locking mechanism is installed on both sides of the support plate.

The control power supply works synchronously with the stepping motor of the sampling mirror driving platform.

The trial shows that the locking device can well meet the requirements of use, and has a simple structure and is convenient to use.

Description of drawings

Figure 1 is a schematic diagram of the structure of the sampling mirror driving platform

Fig. 2 is the structural representation of the specific embodiment of the locking mechanism of the sampling mirror drive platform of the present invention

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.

Please refer to Fig. 2, Fig. 2 is the structural representation of the specific embodiment of the locking mechanism of the sampling mirror drive platform of the present invention, as can be seen from the figure, the locking mechanism 7 of the sampling mirror drive platform of the present invention consists of a traction electromagnet 72, a sheet-shaped A strong magnet 76 and a control power supply 71 constitute, and the traction electromagnet 72 is installed on the side of the support plate 2 of the sampling mirror driving platform relative to the ball screw 41 of the ball screw pair 4 of the sampling mirror driving platform , the sheet-shaped strong magnet 76 is fixed on the head of the traction bar of the traction electromagnet 72, the traction electromagnet 72 is connected with a control power supply 71, and the traction electromagnet 72 has a recovery spring , when the control power supply 71 is disconnected, the sheet-shaped strong magnet 76 absorbs and fixes the ball screw 41 under the action of the recovery spring of the traction electromagnet 72 .

Fig. 2 is the structural representation of the specific embodiment of the locking mechanism of the sampling mirror driving platform of the present invention, the locking mechanism 7 of the sampling mirror driving platform is composed of a control power supply 71, a first pulling electromagnet 72 and a second pulling electromagnet 72 with a recovery spring. Electromagnet 75, the first connecting plate 73, the second connecting plate 74, the first sheet-shaped strong magnet 76, the second sheet-shaped strong magnet 77 constitute, and described first connecting plate 73 and the second connecting plate 74 pass screw 78 Fixed on both sides of the support plate 2 of the sampling mirror driving platform, the first pulling electromagnet 72 and the second pulling electromagnet 75 are respectively fixed on the outside of the first connecting plate 73 and the second connecting plate 74 by screws, The first sheet-shaped strong magnet 76 and the second sheet-shaped strong magnet 77 are fixed on the first drawing electromagnet 72 drawbar head and the drawbar head of the first drawing electromagnet 75 by screws respectively and are connected with the sampling reflector. The ball screw 41 of the drive platform is opposite, relying on the action of the recovery spring of the traction electromagnet, it is adsorbed on the ball screw 41, the ball screw pair 4 is composed of the ball screw 41 and the bushing 42, and the support plate 2 is fixed On the said axle sleeve 42.

The present invention is simple in structure and easy to use, and its simple working process is: when the stepping motor is in the working state, the control power supply 71 is turned on, the traction rods of the traction electromagnets 72, 75 shrink, and the traction sheet-shaped strong magnets 76, 77 are separated from the balls Screw mandrel 41, stepper motor 5 drives ball screw pair 4 to run, and drives support plate 2 and sampling reflector 8 to arrive at beam sampling position; Under the effect of electromagnet 72,75 spring forces, drawbar gets back to initial position, and sheet-shaped strong magnet 76,77 is adsorbed on the ball screw mandrel 41 again, because there is sheet-shaped strong magnet effect on support plate 2 both sides, It is more effective to ensure that the position of the ball screw will not drift, and the actual use results prove that the locking device can well meet the use requirements.

Claims (3)

1, a kind of latch mechanism of sampling reflective mirror driving platform, it is characterized in that this latch mechanism (7) is by tractive magnet (72), flaky strong magnet iron (76) and control power supply (71) constitute, described tractive magnet (72) is installed with respect to the ball screw (41) of the ball wire bar pair (4) of described sampling reflective mirror driving platform in back up pad (2) side side at sampling reflective mirror driving platform, described flaky strong magnet iron (76) is fixed on the head of the towbar of described tractive magnet (72), described tractive magnet (72) links to each other with a control power supply (71), described tractive magnet (72) has one and recovers spring, when described control power supply (71) disconnects, described flaky strong magnet iron (76) is under the effect of the recovery spring of described tractive magnet (72), and ball screw (41) absorption is fixing.

2, the latch mechanism of sampling reflective mirror driving platform according to claim 1 is characterized in that described back up pad (2) both sides all are equipped with a latch mechanism (7).

3, the latch mechanism of sampling reflective mirror driving platform according to claim 1 is characterized in that described control power supply (71) synchronouss working with the step motor (5) of described sampling reflective mirror driving platform.

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