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A hydraulic automatic eccentric clamping device for crankshaft connecting rod neck processing

A crankshaft connecting rod and eccentric clamping technology, which is applied to positioning devices, metal processing equipment, metal processing machinery parts, etc., can solve problems such as inability to guarantee processing accuracy, achieve processing stability and processing accuracy, and improve positioning accuracy Effect

Active Publication Date: 2019-05-10
NINGBO HAITIAN PRECISION MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the fixture also processes the crankshaft connecting rod neck through unilateral fixing, which cannot guarantee the machining accuracy

Method used

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  • A hydraulic automatic eccentric clamping device for crankshaft connecting rod neck processing
  • A hydraulic automatic eccentric clamping device for crankshaft connecting rod neck processing
  • A hydraulic automatic eccentric clamping device for crankshaft connecting rod neck processing

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] The hydraulic automatic eccentric clamping device for crankshaft connecting rod neck processing of the embodiment, such as Figure 1 ~ Figure 3 As shown, it includes an eccentric chuck 1, a central positioning mechanism, an axial limit mechanism, an angular limit mechanism and a top tightening mechanism; the rear end of the eccentric chuck 1 is fixed with a connecting plate 11 by screws, and the connecting plate 11 is used for connecting The machine tool spindle 61; the jacking mechanism is installed on the machine tool tailstock 62, and the jacking mechanism is used to tighten the rear end shaft 71 of the crankshaft pin 7; the center positioning mechanism is used to realize the center positioning of the crankshaft pin 7, and the center positioning The mechanism includes a connecting rod 21, an expansion sleeve 22 and a positioning seat...

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Abstract

The invention discloses a hydraulic automatic eccentric clamping device for crankshaft connecting rod neck machining. The hydraulic automatic eccentric clamping device for crankshaft connecting rod neck machining comprises an eccentric chuck, a center positioning mechanism, an axial limiting mechanism, an angular limiting mechanism and a jacking mechanism; when the hydraulic automatic eccentric clamping device for crankshaft connecting rod neck machining is used, a rear end shaft of a crankshaft connecting rod neck to be machined is inserted into a center hole in a conical sleeve through a positioning hole in a positioning disc, the axial position of the workpiece is determined through the positioning disc, meanwhile, through two locking screws, the crankshaft connecting rod neck is pressed, the angular position of the workpiece is limited, an oil cylinder drives a pull rod to drive a connecting rod to move backwards, an expansion sleeve shrinks backwards, the workpiece is clamped, center positioning of the workpiece is ensured, and a machine tool tailstock drives the jacking mechanism to jack the rear end shaft of the workpiece. The clamping device has the functions of workpiece axial limiting, angular limiting, center positioning and eccentric jacking, dual-side clamping of the workpiece can be achieved, the workpiece positioning precision can be greatly improved, and machining stability and machining precision of the workpiece are ensured.

Description

technical field [0001] The invention relates to a workpiece clamping device for a numerically controlled machine tool, in particular to a hydraulic automatic eccentric clamping device for crankshaft connecting rod neck processing. Background technique [0002] The existing fixtures for crankshaft connecting rod neck processing can only realize one-sided clamping of the crankshaft connecting rod neck workpiece, and cannot guarantee stability during the processing, which makes the processing accuracy of the workpiece difficult to meet expectations. CN107584342A discloses a fixture for crankshaft connecting rod neck processing, including an indexing plate, a bayonet pin and a bayonet seat, the bayonet seat is fastened to the rear thimble rack of the machine tool, the bayonet pin is hinged on the bayonet seat, and the indexing The plate is set on the small end of the crankshaft and is firmly connected with the small end of the crankshaft. There are two card slots on the index pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B23/00B23B31/40B23Q3/12
CPCB23B23/00B23B31/40B23Q3/12
Inventor 葛运斌饶磊
Owner NINGBO HAITIAN PRECISION MASCH CO LTD
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