Machining clamp for correcting deformation of cast hub

Abstract

A plane is arranged on a center base of the clamp and used for fixing the direction when the clamp is installed. Three guide columns are installed on the base, a spring is installed on each guide column, a positioning block with three guide holes is further installed on each guide column, and the three guide holes in each positioning block are precisely matched with the three guide columns on the base and can slide up and down. The shape of the positioning block corresponds to a machined hub window, the clamp is further provided with a hydraulic clamping device, under the acting force of the hydraulic clamping device, the springs on the three guide columns can generate counter-acting force, and the positioning block is tightly attached to the non-machined face of the hub window under the counter-acting force of the springs. Therefore, the effects of centering and fixing the direction by using the blank surface of the cast hub are achieved. Therefore, the occurrence of large and small edges is reduced. The center positioning block can be quickly detached, and the center base is provided with a height-adjustable device, so that the positioning block can be quickly adjusted and replaced when hubs of different models, sizes and shapes are produced.

Description

Technical Field

[0001] The invention relates to a processing fixture device for correcting deformation of a casting wheel hub. The technology utilizes the casting wheel hub blank surface for centering and fixing direction, and can effectively solve the problem of machining large and small edges of the casting wheel hub caused by casting deformation. Background Art

[0002] At present, the known wheel hub processing fixture structure is composed of the outer circle or center hole of the wheel hub for centering and a hydraulic clamping device. The outer circle and center hole of the wheel hub are processed non-blank surfaces, and the direction cannot be determined. When milling the wheel hub, it is easy to cause directional deviation. There is a large deviation between the processed center and the center of the cast wheel hub blank, resulting in obvious large and small edge problems in the appearance of the final processed product. Summary of the invention

[0003] In order to overcome the large and small edge problems of the existing processing methods, the present invention provides a processing fixture device for correcting deformation of a casting wheel hub. The fixture device not only uses the casting wheel hub blank surface to find the center to avoid deviation during processing, but also uses the blank surface to fix the direction, thereby ensuring that the influence of casting deformation on processing is minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Structure of the present invention Figure 1 ; Principle of assembly and correction of hub deformation in the present invention Figure 2 ; Principle of assembly and correction of hub deformation in the present invention Figure 3 .

Claims

1. A device for correcting the deformation of the casting hub is provided on the center base of the processing fixture for correcting the deformation of the casting hub. The base is provided with two or more guide pillars, the guide pillars are provided with springs, and the guide pillars are also provided with positioning blocks that match the shape of the hub to be processed, and the positioning blocks have two or more guide holes.

2. The device for correcting hub deformation according to claim 1, characterized in that The positioning block is closely matched with the guide column, and the positioning block is supported by a spring to bounce up. When clamping, the positioning block uses the reaction force of the spring to find the center of the wheel hub and correct the deformation of the wheel hub at the same time.

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