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The relationship between original error and processing errors in metal fabrication

Yummy Yao 2015-09-18 14:13:40
In the machining process, between the tool and the workpiece surface reasonable positional relationship, the machined surface precision processing requirements can be achieved, otherwise it can not reach the processing requirements, precision analysis of various factors is analyzed and studied precision can not meet the requirements , namely the possibility of errors generated by a variety of original and take effective measures to overcome the process to improve accuracy.
In machining, machine tools, fixtures, workpiece and tool to form a complete system, called the process system. As the process of the system itself and the state of the structure, operation and processing of physical and mechanical phenomena arising from a variety of factors relative positional relationship between the tool and the workpiece is offset referred to the original error. It can still be enlarged or reduced to reflect to the workpiece, the workpiece machining errors affecting produce precision parts. Part of the original error related to the cutting process; the initial state of a part of the original error and process system itself relevant. The two parts error and affected by environmental conditions, operator skill level and other factors.
Itself the initial state (1) and process systems related to the original error
① principle error that is present on the working principle of the method error.
② Process Systems geometric error
Error relative position of the workpiece and the tool already exists in the static state, such as tools and fixtures manufacturing error, adjustment error and installation error;
Error of the workpiece and relative position of the tool in the presence of motion, such as machine tool spindle radial motion error, error guide rails, transmission chain transmission errors.
(2) The original and cutting process-related errors
① force effect caused by the deformation process systems, such as the error process system subject to deformation, stress generated within the workpiece and deformation caused by the disappearance caused.
② deformation caused by thermal effects technology systems, such as errors caused by machine, tool, workpiece thermal deformation. In the machining process, between the tool and the workpiece surface reasonable positional relationship, the machined surface precision processing requirements can be achieved, otherwise it can not reach the processing requirements, precision analysis of various factors is analyzed and studied precision can not meet the requirements , namely the possibility of errors generated by a variety of original and take effective measures to overcome the process to improve accuracy.
In machining, machine tools, fixtures, workpiece and tool to form a complete system, called the process system. As the process of the system itself and the state of the structure, operation and processing of physical and mechanical phenomena arising from a variety of factors relative positional relationship between the tool and the workpiece is offset referred to the original error. It can still be enlarged or reduced to reflect to the workpiece, the workpiece machining errors affecting produce precision parts. Part of the original error related to the cutting process; the initial state of a part of the original error and process system itself relevant. The two parts error and affected by environmental conditions, operator skill level and other factors.
Itself the initial state (1) and process systems related to the original error
① principle error that is present on the working principle of the method error.
② Process Systems geometric error
Error relative position of the workpiece and the tool already exists in the static state, such as tools and fixtures manufacturing error, adjustment error and installation error;
Error of the workpiece and relative position of the tool in the presence of motion, such as machine tool spindle radial motion error, error guide rails, transmission chain transmission errors.
(2) The original and cutting process-related errors
① force effect caused by the deformation process systems, such as the error process system subject to deformation, stress generated within the workpiece and deformation caused by the disappearance caused.
② deformation caused by thermal effects technology systems, such as errors caused by machine, tool, workpiece thermal deformation.