Positioning clamp for Macpherson suspension body and tower body welding

Abstract

The invention discloses a positioning clamp for Macpherson suspension body and tower body welding. The clamp comprises a tower body positioning mechanism and a suspension body positioning mechanism which are fixed on a clamp table top. The tower body positioning mechanism is provided with a positioning and clamping unit, an auxiliary supporting unit and a horizontal sliding unit, the positioning and clamping unit and the auxiliary supporting unit are installed on the horizontal sliding unit, and the positioning and clamping unit is provided with a power source, a positioning and clamping module and a supporting and clamping module. After the power source is fixedly connected with the positioning and clamping module, the power source is connected with the supporting and clamping module through a connecting base and a guiding shaft, so that clamping and positioning of a tower body are achieved. The tower body positioning mechanism and the suspension body positioning mechanism are each provided with an angle adjusting structure, so that the angles of all the mechanisms on the X-Y plane and the X-Z plane are adjustable, accurate positioning after the tower body and a suspension body are assembled is controlled, and the opening size and the shape and position precision of a control arm mounting position after welding are achieved. By means of the positioning clamp, the first time quality of products is improved, and quality is stable and reliable.

Description

[0001] The invention relates to the technical field of fixtures, in particular to a positioning fixture suitable for welding MacPherson suspension towers, and belongs to the technical field of welding. Background technique [0002] McPherson suspension is currently the most widely used independent suspension for cars. It has a simple structure, compact layout, small changes in front wheel alignment, and good driving stability. Among them, the lower wishbone is connected with the main body of the McPherson suspension, and the lower wishbone is connected with the steering knuckle through the ball pin, which constitutes one of the elements for adjusting the four-wheel alignment, so the installation position between the suspension main body and the lower wishbone Precision control is particularly important, especially in the installation position formed between the tower body and the suspension body. [0003] In production practice, although separate clamping and positioning are a...

AI Technical Summary

Problems solved by technology

[0003] In production practice, although separate clamping and positioning are used for the tower body and suspension main body, the traditional clamping and positioning mechanism design only considers the adjustment in three directions of the coordinate axis, or the adjustment of an additional angle direction, and does not consider The adjustment of multiple angles and the angle adjustment and synergy of multiple mechanisms result in unsatisfactory positioning between the tower body and the suspension body, resulting in the opening size accuracy and shape accuracy of the installation position formed between the tower body and the suspension body unable to meet requirements

[0004] At the same time, the control accuracy of the installation position formed between the tower body and the suspension body by the manufacturer is only reflected in the opening size and the coaxiality between the installation hole and the nut, without considering the parallelism of the opening and the position of the installation position. factors, resulting in the following problems in the assembly process: (a) Poor coaxiality, during the bolt tightening process, always interferes with the side of the plate hole; (b) Poor parallelism, showing a "bell mouth" phenomenon, the hinge of the lower cross arm There are uneven gaps between the contact surface with the main body of the suspension, and the torque attenuation phenomenon frequently occurs during the bolt tightening process; (c) the position is poor, and after the chassis module is assembled, during the calibration of the four-wheel parameters, limit parameters or Exceeding the limit causes the four-wheel calibration to fail

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