Automatic turning hydraulic clamp for crankshaft connecting rod journal
A crankshaft connecting rod and fixture technology, which is applied in turning equipment, turning equipment, manufacturing tools, etc., can solve problems such as unsafe, time-consuming and labor-intensive, and difficult automatic fixture design, so as to increase reliability and safety and meet quality dynamics. The effect of the balance requirement
Active Publication Date: 2012-07-11
沈阳机床成套设备有限责任公司
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Problems solved by technology
However, if it is used for connecting pin neck machining, the clamping position deviates from the center of rotation and the resulting dynamic balance problem makes it very difficult to design an automatic clamp for crankshaft turning. Unsafe factors make it difficult to realize automated production methods
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[0020] A hydraulic automatic fixture for crankshaft connecting rod neck turning, which is used on a special lathe for double-spindle crankshaft machining, see attached figure 1 , figure 2 , the left clamp body 1 and the right clamp body 13 are respectively fixed on the front flange end face of the main shaft of the left and right spindle boxes of the machine tool through the connection plate 2, and the crankshaft 12 to be processed is placed between the two clamp bodies. The structures of the left and right sets of clamps are basically the same, the only difference is that the right clamp body 13 is equipped with an axial positioning oil cylinder 14, and the relative position of the left clamp body 1 is equipped with an axial positioning screw 15, see the attached image 3 . The present invention is characterized in that a hydraulic oil cylinder and a hinge booster mechanism are radially installed in the inner cavity space of the left clamp body 1 . Two structural designs o...
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The invention provides an automatic turning hydraulic clamp for a crankshaft connecting rod journal. The ends of two main shafts of a turning lathe are respectively provided with a clamp, a right clamp body is provided with an axial positioning screw. The automatic turning hydraulic clamp provided by the invention is characterized in that the inner cavity of a left clamp body is radially provided with a hydraulic oil cylinder and a hinge force-amplifying mechanism, wherein the hydraulic oil cylinder has two types of structures, a double-eared oil cylinder body or a double-eared sleeve integrated with a piston rod is connected with the hinge force-amplifying mechanism, so that the applied force can be changed into the rotation of a transmission shaft through a connecting plate and an oscillating bar which are connected with the double-eared oil cylinder body or the double-eared sleeve; when an included angle alpha between the connecting plate and the moving axis of the structure I or the structure II is approximate to 90 degrees, the pushing force of the hydraulic oil cylinder can be changed into an increased torque to be transferred to the transmission shaft and a pressing claw, and further the clamping of a workpiece can be realized; the turning lathe is equipped with three hydraulic oil paths, one path is connected to an axial positioning oil cylinder, the other two paths are connected to the double-eared oil cylinder body so as to realize the clamping and releasing actions of the pressing claw, and the conversion of the oil paths is controlled by a machine tool numerical control system. The automatic turning hydraulic clamp provided by the invention can not only satisfy the requirement for the positioning and clamping functions of the automatic clamps, but also consider the overall dynamically-balanced structure and shape of the clamp body.
Description
technical field [0001] The invention relates to mechanical equipment, in particular to a mechanism for automatically positioning and clamping a crankshaft in a crankshaft connecting rod neck turning machine tool. Background technique [0002] The crankshaft is one of the most difficult core parts of the internal combustion engine. As a mass-produced automobile crankshaft, due to cost and benefit constraints, it has undergone considerable evolution in terms of design, materials and processing. As people pay attention to environmental protection, The need to improve performance and reduce manufacturing costs is increasing, and this evolution will continue. The geometric shape of a journal or connecting pin of a crankshaft is a short cylinder, and turning is undoubtedly the most traditional, economical, simple and reliable process. The turning process of crankshaft main journal and connecting rod journal has occupied more than half a century in the history of crankshaft manufa...
Claims
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IPC IPC(8): B23B5/22
Inventor 田大伟张宝东张新宇孙长利赵伟冯如意魏明亮姜华
Owner 沈阳机床成套设备有限责任公司