Cutter deformation measuring fixture and cutter deformation online measuring method implemented by same
A technology for measuring fixtures and cutting tools, applied in the direction of measuring/indicating equipment, manufacturing tools, metal processing machinery parts, etc., can solve the problems of poor practicability and achieve the effect of strong practicability
Active Publication Date: 2014-07-02
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0007] In order to overcome the shortcomings of poor practicability of existing real-time monitoring devices for cutting force of machine tools, the present invention provides a fixture for measuring tool deformation
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[0025] refer to Figure 1-4 . The tool deformation measurement fixture of the present invention includes a semicircular clamping ring 1, a first bolt 2, a first nut 3, a positioning disc 4, a second bolt 5, a connecting screw 6, a second nut 7, a sensor fixing base 8, a first Three nuts 9 and a displacement sensor 10.
[0026] Two semicircular clamping rings 1 and positioning disc 4 constitute the clamping part of the clamp. There are round holes at both ends of the semicircular clamping ring 1, which are tightened and fixed by the first bolt 2 and the first nut 3; the radius of the semicircular clamping ring 1 is slightly larger than the radius of the machine tool spindle, and there is a rubber layer inside to increase the friction ; There is a circular hole in the middle of the positioning disc 4 to facilitate the passage of the tool; the shape of the positioning disc 4 is consistent with the shape of the bottom of the main shaft for positioning.
[0027] The fixed part o...
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The invention discloses a cutter deformation measuring fixture and a cutter deformation online measuring method implemented by the same. The cutter deformation measuring fixture and the cutter deformation online measuring method are used for solving the technical problem of poor practicality of an existing real-time machine tool cutting force monitoring device. The technical scheme includes that the fixture comprises two semicircular clamping rings, a positioning disc, a sensor fixing base and four displacement sensors. The two semicircular clamping rings and the positioning disc form a clamping portion of the fixture, a circular hole is formed in the middle of the positioning disc, a cutter can conveniently penetrate the circular hole, the sensor fixing base and the positioning disc are fixedly connected with each other by four connecting screws, circular holes for mounting the displacement sensors are radially formed in the sensor fixing base, and the four displacement sensors are arranged along the radial direction of the cutter at intervals of 90-degree angles. The cutter deformation online measuring method includes recording X-direction and Y-direction components of deformation of the cutter in an industrial personal computer system by the aid of the four displacement sensors and visually displaying the X-direction and Y-direction components via a visual software interface in real time; calculating cutting force of the cutter in a deformation direction according to the deformation of the cutter in machining procedures. The deformation of the cutter is caused when the cutter is used for cutting. The cutter deformation measuring fixture and the cutter deformation online measuring method have the advantage of high practicality.
Description
technical field [0001] The invention relates to a measuring jig, in particular to a tool deformation measuring jig. It also relates to an online measurement method for tool deformation by using the fixture. Background technique [0002] In the modern manufacturing industry, multi-axis CNC machine tools are widely used due to their good machining accuracy, high work efficiency and high degree of automation. During the machining process, the tool that plays the main role in machining will be deformed under the influence of cutting force and cutting heat, which will directly lead to dimensional and shape errors of the machined parts. In order to reduce the deformation of the tool, the usual methods are to reduce the length of the free end of the tool holder or to use a tool with a larger diameter. However, these methods have their limitations and cannot essentially eliminate errors. In order to study the tool deformation theoretically, the machining error is reduced by optim...
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IPC IPC(8): B23Q17/09
CPCB23Q17/0952
Inventor 张定华张笑凡罗明吴宝海张莹王骏腾
Owner NORTHWESTERN POLYTECHNICAL UNIV