Precision of position of numerical control machine tool examines

2-2000 " numerical control examines general rule the 2nd part: Precision of fixed position of numerical control axes decides with what repeat fixed position precision " the specification of national level, include the following item entirely: 1, the biggest linear route that line journey controls axes of next athletic component edge to move in the number or circle axes revolving the greatest distance. 2, the partial axes journey that measures the journey to be used at collecting data. When the choice measures the journey, should make sure OK and two-way approach is mixed the first times final a target position. See figure below the standard examines circular chart standard examines circularly 3, target position (I = 1 comes M) the position that athletic component process designing should obtain. The specific place in the target position that suffix watch I shows edge spool thread or confuses axes alternative. 4, real position (I = 1 comes M; J = 1 moves to N) component J second to I when target position approach measure actually reach the place. 5, the actual place that component of positional deviation motion reachs is subtractive the difference of target position. 6, one-way with identical directional edge axes or circle axes approach a series of measurement of some target position. Symbolic ↑ expresses from square the parameter to approach earning; Be like,symbolic ↓ expresses the parameter from earning of negative direction approach or. 7, two-way from two direction edge axes or circle axes approach a series of measurement of some target position the parameter that measures. 8, the area that expands inaccuracy spends mensurable ground to decide one measures an outcome surely asks, this interval expects to include major numerical value to distributing. 9, enclothe factor to use as to obtain patulous inaccuracy to be spent surely a numeric factor that standard inaccuracy spends fold surely 10, the deviation of one-way and average position of some position or by N second the positional deviation of earnings of position of one-way approach some or arithmetical average. And 11, the deviation of two-way and average position of some position blame the arithmetical average that from two direction approach the deviation of one-way and average position of earning of some position cadaver mixes 12, the retrorse difference of some position is worth from two direction approach the difference of deviation of the two one-way and average positions when some position. 13, the needs a value reversely absolute value that axes needs axes of value B edge or the each target place that circle axes reversely 1 call together, .

Medium most the person is worth 14, the arithmetical average that each target positions that axes differs the axes that be worth an edge on average reversely or circle axes need a value reversely. 15, the estimation worth that spends surely in the inaccuracy of one-way position level of some position or the N that adopt pair of some positions second the estimation worth that the inaccuracy of positional deviation standard that one-way approach place obtains spends surely. And 16, of some position one-way repeat fixed position precision or spend certain limits surely by the patulous inaccuracy of the one-way position deviation of some position, enclothe factor for 2. And 17, of some position two-way repeat fixed position precision 18, axes is one-way repeat fixed position precision or and axes two-way the repetition that repeats axes of edge of R of fixed position precision or the either position that circle axes locates the maximum of precision. 19, axes is one-way axes of location system error or edge or the either that circle axes locally the algebra of the deviation of one-way and average position of one-way approach and maximum and the least value is differred and 20, axes of the two-way approach of axes of edge of E of error of two-way location system or the either position that circle axes. 21, axes is two-way and average axes of edge of positional deviation M or circle axes, the algebra of the maximum of the X of deviation of two-way and average position of positional P and the least value is poor. 22, precision of one-way fixed position or the of 2 times combination that spend estimation worth surely by error of one-way location system and inaccuracy of one-way position level come to axes certain limits. And 23, 2 when A of precision of two-way fixed position decides degree of estimation to be worth by inaccuracy of error of two-way location system and two-way position level combination comes to axes certain limits. Travel of numerical control machine tool comes to the line form axes of 2000mm and journey the positional precision of the circumgyrate axes of 360 ° examines the project basically has: 1, axes A of precision of two-way fixed position; 2, ↑ of A of precision of one-way fixed position mixes axes A ↓ ; 3, axes E of deviation of position of two-way location system; 4, ↑ of E of deviation of position of two-way location system mixes axes E ↓ ; 5, axes is two-way and average the limits M of positional deviation; 6, axes two-way repeat R of fixed position precision; 7, axes is one-way repeat ↑ of R of fixed position precision and R ↓ ; 8, axes differs value B reversely; 9, the average and retrorse difference of axes is worth. Precision of linear axes position detects the tool has: Measure small appearance and into group slip gauge, interferometer of laser of feet of standard length strain line and optical microscope, double frequency. Precision of rotor line position detects the tool has: Polyhedron and optical reading microscope, revolving stage of collimator of congress of high accuracy round grating, standard. CNC Milling