Center hole tensioning pull-down oil cylinder for automobile steering knuckle machining

Abstract

The utility model provides a center hole tensioning pull-down oil cylinder for machining an automobile steering knuckle, which is simple in structure, effectively ensures that a flange surface of the steering knuckle can be attached and supported, ensures the tensioning effect, prevents deviation during machining of the automobile steering knuckle, and effectively ensures the subsequent machining quality of the automobile steering knuckle. A pull-down oil cylinder and a tensioning oil cylinder are arranged on the base, a slope surface is arranged on a piston rod of the pull-down oil cylinder, the tensioning oil cylinder is connected with an expansion sleeve, and the inner side of the expansion sleeve abuts against the slope surface.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a center hole tensioning and pulling-down oil cylinder for processing automobile steering knuckles. Background Art

[0002] The structure of the automobile steering knuckle is complex. In its processing, the automobile steering knuckle needs to be pulled down and tightened. The existing center hole tensioning and pulling cylinder is used for pulling down and tightening. The existing tensioning and pulling cylinder is shown in Figure 1 A single oil cylinder controls the expansion sleeve 1 to tighten and pull down. The tightening and pulling down actions cannot control the sequence, which may cause the steering knuckle flange surface to not stick to the support, resulting in dimensional deviation of the workpiece during processing, affecting the clamping and positioning effect, and thus affecting the subsequent processing quality of the automobile steering knuckle. Summary of the invention

[0003] The utility model provides a center hole tensioning and pulling-down oil cylinder for automobile steering knuckle processing, which has a simple structure and effectively ensures that the steering knuckle flange surface can stick to the support, ensures the tensioning effect, prevents deviation during automobile steering knuckle processing, and thus effectively ensures the subsequent processing quality of the automobile steering knuckle.

[0004] The technical solution of the utility model is as follows:

[0005] A center hole tensioning and pulling-down cylinder for automobile steering knuckle processing is characterized in that it comprises a base, a pulling-down cylinder and a tensioning cylinder are arranged on the base, a slope surface is arranged on the piston rod of the pulling-down cylinder, the tensioning cylinder is connected to an expansion sleeve, and the inner side of the expansion sleeve abuts against the slope surface.

[0006] Its further feature is that a sleeve is provided on the outside of the pull-down cylinder, and a sealing ring is provided between the pull-down cylinder piston rod and the sleeve; a sealing ring is provided between the pull-down cylinder piston rod and the tensioning cylinder piston rod; and a sealing ring is provided between the tensioning cylinder piston rod and the base.

[0007] By adopting the above technical scheme, a pull-down cylinder and a tensioning cylinder are arranged on the base, a slope surface is arranged on the piston rod of the pull-down cylinder, the tensioning cylinder is connected to the expansion sleeve, the inner side of the expansion sleeve abuts against the slope surface, the tensioning cylinder first acts to tighten the workpiece, and then the pull-down cylinder acts to pull down the tensioning sleeve together with the tightened workpiece, the two actions are separated, and the workpiece can be tightened and pulled down very reliably, which effectively ensures that the steering knuckle flange surface can stick to the support, ensures the tensioning effect, and prevents deviations during the processing of the automobile steering knuckle, thereby effectively ensuring the subsequent processing quality of the automobile steering knuckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a main cross-sectional schematic diagram of a center hole tensioning and pulling-down oil cylinder for machining an existing automobile steering knuckle;

[0009] Figure 2 The utility model is a cross-sectional schematic diagram of a center hole tensioning and pulling-down oil cylinder for machining an automobile steering knuckle. DETAILED DESCRIPTION

[0010] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0011] See Figure 2 A center hole tensioning and pulling-down cylinder for automobile steering knuckle processing comprises a base 1, on which a pulling-down cylinder 2 and a tensioning cylinder 3 are arranged, a slope surface 5 is arranged on the piston rod 4 of the pulling-down cylinder, the tensioning cylinder 3 is connected to a expanding sleeve 6, the inner side of the expanding sleeve 6 abuts against the slope surface 5, the tensioning cylinder first acts to tighten the workpiece, and then the pulling-down cylinder acts to pull down the tensioning sleeve together with the tightened workpiece, the two actions are separated, and the workpiece is tightened and pulled down very reliably, which effectively ensures that the steering knuckle flange surface can stick to the support, ensures the tensioning effect, and prevents deviation during automobile steering knuckle processing, thereby effectively ensuring the subsequent processing quality of the automobile steering knuckle.

[0012] A sleeve 7 is provided on the outer side of the pull-down cylinder 2, a sealing ring 8 is provided between the pull-down cylinder piston rod 4 and the sleeve 7, a sealing ring 10 is provided between the pull-down cylinder piston rod 8 and the tensioning cylinder piston rod 9, and a sealing ring 11 is provided between the tensioning cylinder piston rod 9 and the base 1. The sealing rings are connected to ensure the sealing performance of the entire cylinder.

[0013] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the utility model.

Claims

1. A center hole tensioning and pulling-down oil cylinder for automobile steering knuckle processing, characterized in that: It comprises a base, on which a pull-down oil cylinder and a tensioning oil cylinder are arranged, a slope surface is arranged on the piston rod of the pull-down oil cylinder, the tensioning oil cylinder is connected to an expansion sleeve, and the inner side of the expansion sleeve abuts against the slope surface.

2. The center hole tensioning and pulling-down oil cylinder for automobile steering knuckle machining according to claim 1, characterized in that: A jacket is arranged on the outside of the pull-down oil cylinder, and a sealing ring is arranged between the piston rod of the pull-down oil cylinder and the jacket.

3. The center hole tensioning and pulling-down oil cylinder for automobile steering knuckle machining according to claim 2, characterized in that: A sealing ring is arranged between the piston rod of the pull-down oil cylinder and the piston rod of the tensioning oil cylinder.

4. The center hole tensioning and pulling-down oil cylinder for automobile steering knuckle machining according to claim 3 is characterized in that: A sealing ring is arranged between the piston rod of the tensioning oil cylinder and the base.

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