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Floating positioning pin device and weldment positioning method

A floating positioning and positioning pin technology, used in auxiliary devices, welding equipment, auxiliary welding equipment and other directions, can solve the problems of easy offset, scratches, and positioning pin blocking, and achieve a small blocking sense and accurate positioning. Effect

Pending Publication Date: 2022-07-29
MINTH AUTOMOTIVE TECH RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Before and after welding, the pin hole on the weldment will change radially to a certain extent, and the pin hole is easily shifted due to welding stress
In the conventional straight-up and straight-down pin withdrawal mechanism, due to the influence of deformation after welding, the position of the pin hole after welding is offset, which makes it difficult for the positioning pin to withdraw from the positioning hole; or when the positioning pin withdraws, the cylindrical surface of the positioning pin It is easy to scratch the inner surface of the pin hole of the product, which affects the product quality; the positioning pin has an obvious sense of blockage when it is withdrawn from the pin hole after welding

Method used

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  • Floating positioning pin device and weldment positioning method
  • Floating positioning pin device and weldment positioning method
  • Floating positioning pin device and weldment positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] like Figure 1-Figure 2 and Figure 5 As shown, a floating positioning pin device includes: a mounting base 1 , a positioning pin 2 and a floating roof mechanism 3 , wherein the floating roof mechanism 3 includes a driving member 30 , a connecting sleeve 31 and a guiding sleeve 32 .

[0045] The mounting seat 1 has a mounting hole 100. Specifically, the mounting seat 1 includes a seat body 11 and a top cover 10 detachably connected to the seat body 11. Bolts can be passed between the seat body 11 and the top cover 10. For connection, the mounting seat is set as two parts, the seat body 11 and the top cover 10, so as to facilitate the installation of other components inside. The mounting hole 100 is opened on the top cover 10, the mounting hole 100 includes an upper pin hole section 100A and a lower boss hole section 100B, and the diameter of the upper pin hole section 100A is smaller than the diameter of the lower boss hole section 100B , the shape of the mounting hol...

Embodiment 2

[0053] A method for positioning a weldment, using the floating positioning pin device of the first embodiment, the weldment has a positioning hole, and the method for positioning the weldment includes:

[0054] S1. The driving member 30 drives the connecting sleeve 31 to top, the inner cone wall 310 abuts on the outer cone wall 220, and the positioning pin 2 is fixed in the installation hole 100; at this time The position of the locating pin 2 is uniquely determined.

[0055] S2. Install the weldment on the positioning pin 2, and the positioning pin 2 is inserted into the positioning hole; at this time, the position of the weldment is positioned and fixed.

[0056] S3. After the welding of the weldment is completed, the driving member 30 drives the connecting sleeve 31 to retract, and the inner cone wall 310 is separated from the outer cone wall 220; After the distance, the positioning pin 2 and the connecting sleeve 31 retract together. The preset distance is the gap H betw...

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Abstract

The invention relates to the technical field of positioning devices, and discloses a floating positioning pin device and a weldment positioning method. The positioning pin is arranged in the mounting hole, and a gap is formed between the positioning pin and the inner wall of the mounting hole; the floating roof mechanism comprises a driving part and a connecting sleeve, and the driving part is arranged on the mounting seat and can drive the connecting sleeve to do telescopic motion; the connecting sleeve is arranged below the positioning pin and movably connected with the positioning pin, an outer conical wall is arranged at the end, close to the connecting sleeve, of the positioning pin, an inner conical wall is arranged on the connecting sleeve, and the inner conical wall is movably attached to the outer conical wall; when the inner conical wall abuts against the outer conical wall, the positioning pin is fixed in the mounting hole; when the inner conical wall is separated from the outer conical wall, the positioning pin can move in the radial direction of the positioning pin, and the driving piece can drive the connecting sleeve and the positioning pin to retract. The floating positioning pin device has the advantages that positioning is reliable and accurate, pin withdrawing is convenient, pin withdrawing retardation is small, product quality is not affected, and the structure is simple.

Description

technical field [0001] The present invention relates to the technical field of positioning devices, in particular to a floating positioning pin device and a method for positioning a weldment. Background technique [0002] Welding is a common process in machining. For some weldments with their own pin holes, the pin holes are often used as positioning holes to cooperate with the positioning pins to locate and fix the weldments, and then carry out the subsequent welding process. [0003] Before and after welding, the pin hole on the weldment will undergo a certain degree of radial change, and the pin hole is easily offset by the welding stress. In the conventional straight-up and straight-down type pin withdrawal mechanism, due to the influence of deformation after welding, the position of the pin hole after welding is offset, which makes it difficult for the positioning pin to withdraw from the positioning hole; or when the positioning pin is withdrawn, the cylindrical surfac...

Claims

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Application Information

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IPC IPC(8): B23K37/00B23K37/04
CPCB23K37/00B23K37/0426
Inventor 吴柯柯夏冬明王玉锋
Owner MINTH AUTOMOTIVE TECH RES & DEV CO LTD
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