Jig for Driving Closing Caps into Track Rail Bolt Holes
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Solution Overview
Problem
Conventional methods for embedding closing caps into bolt installation holes in track rails often result in inclined insertion, leading to impaired sealing properties and surface flaws, particularly due to the use of a flat plate-like jig which can cause the closing caps to be driven in at an angle and generate chips, compromising the sealing effectiveness between the slider and the track rail.
Innovation Solution
A driving jig comprising a driving piston and a guide holder with a guide groove that maintains the piston perpendicular to the track rail, allowing for straight insertion of closing caps into bolt installation holes, preventing inclination and chip generation by using a guide holder that slides along the track rail to position the closing cap for each hole, ensuring flush alignment and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flat plate-like jig is used to drive closing caps into bolt installation holes, then the operation can be performed, but the closing caps become inclined and sealing properties are impaired
Solution Approach 1:
A cylindrical guide body is introduced as an intermediary tool between the operator and the closing cap. This guide body includes a guide hole that receives the closing cap and constrains it to move straight into the bolt installation hole, preventing inclination while maintaining ease of operation
Solution Approach 2:
The guide body changes the geometric parameters of the driving process by providing a cylindrical guide hole with a diameter slightly larger than the closing cap outer diameter. This parameter configuration allows the closing cap to pass through while maintaining straight alignment, resolving the contradiction between ease of operation and manufacturing precision
2Productivity
If closing caps are driven in repeatedly using conventional methods, then multiple holes can be sealed, but time is lost due to repeated positioning and alignment operations
Solution Approach 1:
The guide body is designed as a universal tool that can be applied to multiple bolt installation holes along the track rail. The guide holder can be repositioned to different locations, and the guide body repeatedly performs the function of guiding closing caps into holes, eliminating the need for different tools or complex positioning procedures for each hole
Solution Approach 2:
The guide body is preliminarily positioned in the guide hole of the guide holder before the closing cap is inserted. This preliminary positioning ensures that the closing cap will be guided straight into the bolt installation hole, eliminating the need for repeated alignment operations and reducing time loss
3Ease of manufacture
If a closing cap is driven in with inclination, then insertion may occur, but chips are generated and surface flaws are created
Solution Approach 1:
The guide body acts as an intermediary that prevents direct inclined contact between the closing cap and the bolt installation hole. The guide hole constrains the closing cap to move straight, preventing chip generation at the opening edge while maintaining ease of the driving operation
Solution Approach 2:
The guide body provides beforehand cushioning by preventing inclined insertion before chips can be generated. The guide hole's diameter is carefully selected to be slightly larger than the closing cap outer diameter, allowing smooth passage while maintaining straight alignment, thus preventing harmful chip generation before it occurs
Data Source
AI summary
Provided is a driving jig for a closing cap which makes it possible to drive a closing cap straight into a bolt installation hole (11) formed in a track rail (1) and which allows this driving operation to be quickly repeated on a plurality of bolt installation holes (11). The jig includes a driving piston (73) and a guide holder (72) for maintaining the driving piston (73) in a predetermined attitude with respect to the track rail (1). The driving piston (72) has a pressing portion (75) coming into contact with an upper surface of the closing cap (70), and a hammering portion (74a) to be hammered by a tool. The guide holder has a cylinder (72a) in which the driving piston (73) slides, and has, at an opening at one end of the cylinder, a guide groove (77) into which an upper portion of the track rail is loosely fitted and which is orthogonal to an axial direction of the cylinder. The guide holder is provided with a receiving opening (72b) through which the closing cap protruding beyond the track rail is received into the cylinder.