A glue head shape-preserving device and method for bonding precision opto-mechanical systems

Abstract

The invention discloses a glue head shape-preserving device and method for bonding precision optical-mechanical systems, comprising a mirror frame, optical parts, adhesive, shape-keeping tooling, and a plug. The optical part is placed in the frame, the optical axis of the optical part coincides with the cylindrical axis of the frame, the shape-preserving tool is closely matched with the glue hole on the frame, the end surface of the shape-preserving tool is in contact with the cylindrical surface of the optical part, and the adhesive The mixture is injected into the shape-keeping tool, and the plug is installed on the side of the shape-keeping tool away from the optical parts, and is closely matched with the shape-keeping tool. When carrying out optical-mechanical bonding assembly, after injecting the fluid adhesive through the conformal tooling, the installation plug gently squeezes the adhesive to constrain the shape of the adhesive head during curing, so as to realize the bonding of the optical parts and the frame catch. The invention reduces the risk that the shape of the glue head is difficult to control due to the high fluidity of the adhesive before curing, and improves the controllability of the surface shape accuracy of the low-stress bonding of the precision optical-mechanical system, which belongs to the precision optical-mechanical design and adjustment category.

Description

technical field [0001] The invention belongs to the technical field of precision optical-mechanical design and assembly, and relates to a precision optical-mechanical system bonding tool and method, in particular to a glue head shape-preserving device and method for precision optical-mechanical system bonding. Background technique [0002] Precision optomechanical system bonding technology (Bonding Technique) is to use adhesives to install optical parts on the frame. Due to the low elastic modulus of colloids (such as the elastic modulus of commonly used RTV silicone rubber is 2.2GPa, while aluminum alloy materials and Fused quartz is 70.1GPa and 73GPa respectively), which enables the system to effectively suppress the transmission between the mechanical support part and the optical imaging part under the action of temperature, shock and vibration load, thereby reducing the stress deformation of the optical imaging part and simplifying the system structure. Therefore, bondi...

AI Technical Summary

Problems solved by technology

Therefore, when injecting and bonding optical parts and frame parts, the adhesive has a certain fluidity, which affects the bonding area and the shape of the bonding area, resulting in a mismatch between the actual bonding and the designed bonding head, which is serious. Affects the surface quality of optical parts

At present, the method of applying grease is generally used, and grease is applied to the place where the optical parts and the frame do not need to be bonded to prevent this area from gluing. However, due to the flow characteristics of the adhesive, this method is difficult to constrain the shape of the adhesive after curing.

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