Self-aligning installation structure of a hydraulic press for press-fitting equipment

Abstract

The invention discloses a self-aligning mounting structure of an oil press in press-fitting equipment. The press-fitting equipment comprises a vertical pull bar, a nut, a cushion block, the oil press, and a gland. The nut is connected to the top end of the pull bar in a threaded manner. The cushion block, the oil press and the gland are disposed on the pull bar from top to bottom in a sleeving manner. The self-aligning mounting structure comprises a through hole formed in the bottom of the cushion block, a retainer cup, a guide bar, an elastic part, a bearing ball block, and a ball, wherein the retainer cup fixed inside the through hole opens down, the guide bar is slidably disposed inside the retainer cup, a shank of the guide bar is covered with the elastic part, the bearing ball block is fixed at an opening of the retainer cup, the ball moves inside the bearing ball block, and the ball is abutted to the head of the guide bar. The self-aligning mounting structure has the advantages that original surface sliding friction is replaced with rolling friction of the ball, namely shear force applied between the surface of the gland and the surface of a punching is eliminated by rolling of a higher pair, the automatic alignment process of the pull bar is completed, and machining quality of the punching is guaranteed.

Description

technical field [0001] The invention relates to a press-fitting device, in particular to a self-aligning installation structure for a hydraulic press of the press-fitting device. Background technique [0002] For large-scale press-fitting equipment, the length of the tie rod (screw) is usually as long as 10 meters. The top of the tie rod is connected to the hydraulic press through a pad, and the telescopic rod passing through the center hole of the hydraulic press is connected to the pressure cap, and the pressurized force is applied by the hydraulic press. And the deformation of the tie rod completes the pressing work. In actual work, the tie rod will be inclined within 5°, so that the center of the hydraulic press and the center of the parts to be pressed (such as stator core punching) cannot be guaranteed to be on the same center line. Therefore, when the hydraulic press starts to press and assemble, a transverse shearing force will be generated, which will displace the ...

AI Technical Summary

Problems solved by technology

In actual work, the tie rod will be inclined within 5°, so that the center of the hydraulic press and the center of the parts to be pressed (such as the stator core punch) cannot be guaranteed to be on the same center line

Therefore, when the hydraulic press starts to press and assemble, a transverse shearing force will be generated, which will displace the punching sheet on the top layer or generate a certain shearing force, which will affect the processing quality of the stator.

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