What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
The screw refers to the screw (foreign name: Screw), which is a tool that uses the physical and mathematical principles of the oblique circular rotation of the object and the frictional force to gradually fasten the utensils and parts. Screw installation names are divided into: machine screws, self-tapping screws, drill-tail screws, wallboard screws, fiberboard screws, wood screws, hexagonal wood screws, non-prolapse screws, combination screws, miniature screws, furniture screws, electronic screws, chain belt screws .
Traditional rivet nuts are usually cylindrical, and special tools are required to complete the riveting operation between the workpiece and the sheet, and tools are completely required for locking. And in the actual production process, it is often encountered that there are square holes on the workpiece, and bolts need to be installed in the square holes, especially in the power cabinet and the control cabinet when the workpiece with prefabricated square holes is used as the main frame, due to Due to the special structure of the workpiece, the installation nut can only be inserted from the side, and the installation cannot be completed when the side installation space is limited, which brings inconvenience to the installation.
As we all know, screws and nuts are widely used in various mechanical equipment as connectors, so that the mechanical equipment can be easily disassembled, but for equipment whose internal structure needs to be kept secret, it generally does not need to be disassembled after assembly. The nut can be easily dismantled, leaving equipment that needs to be kept secret of the internal structure from being kept secret.
According to the design of the screw washer 110 , when the metal piece 120 and the metal piece 130 are disassembled, after the screw 100 is loosened, the screw washer 110 is often easily dropped or lost, causing trouble for maintenance. Especially when replacing parts at the user end, if the screw washer is loose, it cannot ensure that the user can install it correctly; if the screw washer is lost, it is necessary to purchase new parts, causing a lot of inconvenience.
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