CN110571718A - Intelligent automatic cutting process for high-voltage cable - Google Patents
Intelligent automatic cutting process for high-voltage cable Download PDFInfo
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- CN110571718A CN110571718A CN201910794912.3A CN201910794912A CN110571718A CN 110571718 A CN110571718 A CN 110571718A CN 201910794912 A CN201910794912 A CN 201910794912A CN 110571718 A CN110571718 A CN 110571718A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
- H02G1/1248—Machines
- H02G1/1265—Machines the cutting element rotating about the wire or cable
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- General Physics & Mathematics (AREA)
- Manufacturing Of Electrical Connectors (AREA)
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Abstract
The invention discloses an intelligent automatic cutting process for a high-voltage cable, which comprises a spiral high-voltage cable outline measuring method, a high-voltage cable outline fitting algorithm and an automatic cutting process for the high-voltage cable. The intelligent automatic cutting process for the high-voltage cable can accurately measure and fit the outline of the high-voltage cable, automatically cut the high-voltage cable into the shape required by the joint, has high automation and intelligence degree, strong practicability and high working efficiency, greatly reduces the dependence on manpower, improves the working environment, improves the working efficiency, improves the precision and the construction quality, is stable and reliable, and provides an advanced and practical automatic process for the construction of the high-voltage cable joint.
Description
Technical Field
the invention relates to an intelligent automatic cutting process for a high-voltage cable, and belongs to the field of high-voltage cable joint construction.
Background
At present, in the construction process of a high-voltage cable joint, a high-voltage cable cutting process is a key process which wastes time and labor and has very high process requirements, the dependence on workers is very high, the process needs to cut an outer semi-conducting layer of a cable according to requirements, cut the outer semi-conducting layer with a certain length and expose an insulating layer, cut a slope of the outer semi-conducting layer with a certain length at a proper position, and polish the outer surface of the slope, so that the surface of the insulating layer of the cable, the slope of the semi-conducting layer and a transition region of the slope and the slope are smooth, bright, clean and round, and the defects of unevenness, scratches. In the traditional construction mode, no matter measure outer diameter, the length of cable, still cut outer semi-conducting layer, polish high tension cable surface, all need be accomplished by the high tension cable skilled worker who cultivates through many years, not only waste time and energy, still the artificial deviation appears easily in addition, still can cause high tension cable joint construction badly and trouble sometimes even.
Disclosure of Invention
The invention aims to overcome the defects of the traditional manual construction process and provide an intelligent automatic cutting process for a high-voltage cable, which adopts an intelligent automatic cutting mode to measure and fit the outer contour of the high-voltage cable, quantizes the requirements of the high-voltage cable cutting process, further completes automatic cutting in a full-digitalization mode and provides an advanced and practical automatic process for the construction of a high-voltage cable joint.
The technical scheme for realizing the purpose is as follows: an intelligent automatic cutting process for high-voltage cables comprises a spiral high-voltage cable outline measuring method, a high-voltage cable outline fitting algorithm and an automatic cutting process for the high-voltage cables, wherein the spiral high-voltage cable outline measuring method comprises the following steps:
The method for measuring the outer contour of the spiral high-voltage cable is characterized in that a rotation coordinate axis theta and an abscissa axis X are introduced, and a measuring module surrounds the outside of the high-voltage cableThe contour rotates and advances at a constant speed according to a spiral measuring path, and a series of distance values r of the outer contour of the high-voltage cable are measured1(θi，xi)And recording one by one;
The high-voltage cable outline fitting algorithm is used for measuring a series of distance values r1Performing linear fitting according to r ═ r0﹣r1Obtaining the external contour coordinate value r of the high-voltage cable at any position(θ，x)；
The automatic cutting process of the high-voltage cable quantifies the requirements of the high-voltage cable cutting process into a cutting depth Z along an abscissa axis X(x)(x is an abscissa), and the numerical value r of the outline coordinate of the high-voltage cable is used(θ，x)According to r2(θ，x)＝r(θ，x)–Z(x)The formula calculates the feed position of the automatic cutting tool, and the automatic cutting process of the high-voltage cable is realized.
The measurement module rotates and advances around the outer contour of the high-voltage cable at a constant speed according to a spiral measurement path, namely the measurement module rotates around a circle center O at a constant speed and advances along an abscissa axis X at a constant speed, the measurement module advances M along the abscissa axis X every time the measurement module rotates 360 degrees, and the rotation radius r0Is a constant value and 2 r0Is larger than the outer diameter D of the cable, and a series of outer contour distance values r of the high-voltage cable measured at the moment1(θi，xi)With a uniform rotation angle theta and abscissa X spacing in order to apply the high voltage cable outline fitting algorithm of claim 1.
The above-mentioned measured series of distance values r1Performing linear fitting by using a series of measured distance values r1(θi，xi)Solving r of any position by linear fitting algorithm1(θ，x)And r(θ，x)The algorithm is as follows:
Wherein p is the fitting period; taking a natural number of 2-8; m is the distance of the measurement module which rotates for a circle and advances on the abscissa axis X; thetai is the sampling point angle closest to the theta; xi is the abscissa of the sampling point closest to x, and x is more than xi and less than or equal to xi + M.
The above-described requirements for the high-voltage cable cutting process are quantified as the cutting depth Z along the abscissa axis X(x)(x is an abscissa) means that Z is determined at certain abscissa intervals according to the requirements of the high-voltage cable cutting process(xi)Sequence, a conventional sequence being { Z(0.1--0.1p),…,Z(-0.1),Z(0),Z(0.1),…,Z(249.9+0.1p),Z(250.0+0.1p)The cutting range in the abscissa direction is 0-250 mm, and the interval of the sequence abscissas is 0.1mm, and then a plurality of Z's are utilized(xi)Sequence numerical value is used for solving Z of any position through linear fitting algorithm(x)The algorithm is as follows:
Wherein p is the fitting period; taking a natural number of 2-8; delta is Z(xi)The interval distance of the sequence on the abscissa axis X is in mm; xi is the abscissa of the sampling point closest to x, and x is more than xi and less than or equal to xi + delta.
The intelligent automatic cutting process for the high-voltage cable can better meet the requirement of high-voltage cable joint construction, greatly reduce the dependence on manpower, improve the working environment, improve the working efficiency, improve the precision and the construction quality, is stable and reliable, and provides an advanced and practical automatic process for the high-voltage cable joint construction.
drawings
Fig. 1 is a front view of the measurement of an intelligent automatic cutting process for high-voltage cables according to the present invention.
Fig. 2 is a measurement cross-sectional view of an intelligent automatic cutting process for high-voltage cables according to the present invention.
Fig. 3 is an automatic cutting schematic diagram of an intelligent automatic cutting process for high-voltage cables according to the present invention.
Fig. 4 is a schematic view of the cutting depth of the intelligent automatic cutting process for the high-voltage cable according to the invention.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description is given with reference to the accompanying drawings:
Referring to fig. 1 and 2, an intelligent automatic cutting process for high-voltage cables adopts a spiral high-voltage cable outline measuring method, introduces a rotation coordinate axis theta and an abscissa axis X, and enables a measuring module to rotate and advance around the high-voltage cable outline at a constant speed according to a spiral measuring path, namely, the measuring module rotates around a circle center O at a constant speed and advances along the abscissa axis X at a constant speed, and advances M along the abscissa axis X every 360 degrees of rotation, and keeps a rotation radius r0is a constant value and 2 r0Is larger than the outer diameter D of the cable, and a series of outer contour distance values r of the high-voltage cable measured at the moment1(θi，xi)With a uniform rotation angle theta and abscissa X spacing in order to apply the high voltage cable contour fitting algorithm described above.
Referring to fig. 2 and 3, an intelligent automatic cutting process for high-voltage cables quantifies the requirements of the cutting process for high-voltage cables into a cutting depth Z along an abscissa axis X(x)(x is an abscissa), and the numerical value r of the outline coordinate of the high-voltage cable is used(θ，x)According to r2(θ，x)＝r(θ，x)–Z(x)The feed position of the automatic cutting tool is calculated according to the formula (r)2(θ，x)The numerical value dynamically adjusts the feed position, and the high-voltage cable is spirally cut, so that the automatic cutting process of the high-voltage cable is realized.
Referring to fig. 3 and 4, an intelligent automatic cutting process for high-voltage cables, which uses a partition method to divide a cutting depth sequence Z according to the characteristics and requirements of the high-voltage cable cutting process(xi)Divide into five regions according to certain abscissa interval, be respectively entering sword district, slope cutting district, transition district, smooth cutting district, retreat sword district, wherein: the cutter entering area is a cutter following area and is used for overcoming the inertia of a cutter feeding system and reducing the cutter following error, generally Z(xi)The sequence value is gradually increased to 0 from a negative value; the slope cutting area is an outer semi-conducting layer slope area in the high-voltage cable cutting process, Z(xi)The sequence number is gradually increased from 0The method comprises the following steps that (1) the distance between the delta slope and the delta slope is usually 1-3 mm, and the specific numerical value is determined according to the thickness and the tolerance of an outer semi-conductive layer of the high-voltage cable; the smooth cutting zone is the completely removed area of the outer semi-conducting layer in the high-voltage cable cutting process, Z(xi)Keeping the sequence numerical value at a certain fixed numerical value delta smooth (generally between 1mm and 5 mm), wherein the specific numerical value needs to be determined according to the thickness and tolerance of the outer semi-conductive layer of the high-voltage cable and the specific process requirement; the transition zone is an area between the slope cutting zone and the smooth cutting zone and is used for ensuring smooth transition of the outer surface of the high-voltage cable after the cutting process, Z(xi)Gradually increasing the sequence value from a delta slope to a delta smooth, wherein the value of the sequence value should form a smooth arc line, and the slopes at two ends of the arc line should be close to 0; the tool withdrawal area is a tool withdrawal area and is used for rapidly withdrawing the tool to a safe position to prevent the tool from contacting or even colliding with the outer surface of the cable, and Z is(xi)And the sequence value is smoothly and gradually reduced to delta blade (usually between-5 mm and-50 mm) from delta, and the specific value is determined according to the outer diameter of the high-voltage cable, the bending degree of the cable and the zero position of the cutter.
Referring to FIGS. 1, 3 and 4, r is measured1(θi，xi)On the abscissa xiThe value range of (A) is determined according to the cutting range of the high-voltage cable, the period p of a fitting algorithm and the pitch M of a spiral measuring path (the measuring module advances M along the abscissa axis X every 360 degrees), and the abscissa X of the measuring starting point S and the measuring end point E is ensurediCovering [ cutting range of high-voltage cable + 2. p. M ].
In conclusion, the intelligent automatic cutting process for the high-voltage cable disclosed by the invention overcomes the defects of the traditional manual construction process, can better meet the requirement of high-voltage cable joint construction by adopting an intelligent automatic cutting mode, greatly reduces the dependence on labor, improves the operating environment, improves the working efficiency, improves the precision and the construction quality, is stable and reliable, and provides an advanced and practical automatic process for the high-voltage cable joint construction.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (5)
1. an intelligent automatic cutting process for high-voltage cables is characterized by comprising a spiral high-voltage cable outline measuring method, a high-voltage cable outline fitting algorithm and an automatic cutting process for the high-voltage cables, wherein:
The spiral high-voltage cable outer contour measuring method is characterized in that a rotation coordinate axis theta and an abscissa axis X are introduced, a measuring module rotates and advances around the outer contour of the high-voltage cable at a constant speed according to a spiral measuring path, and a series of distance values r of the outer contour of the high-voltage cable are measured1(θi，xi)And recording one by one;
the high-voltage cable outline fitting algorithm is used for measuring a series of distance values r1Performing linear fitting according to r ═ r0﹣r1Obtaining the external contour coordinate value r of the high-voltage cable at any position(θ，x)；
The automatic cutting process of the high-voltage cable quantifies the requirements of the high-voltage cable cutting process into a cutting depth Z along an abscissa axis X(x)(x is an abscissa), and the numerical value r of the outline coordinate of the high-voltage cable is used(θ，x)According to r2(θ，x)＝r(θ，x)–Z(x)the feed position of the automatic cutting tool is calculated according to the formula (r)2(θ，x)The numerical value dynamically adjusts the feed position, and the high-voltage cable is spirally cut, so that the automatic cutting process of the high-voltage cable is realized.
2. The intelligent automatic cutting process for the high-voltage cable according to claim 1, wherein the process comprises the following steps: the measurement module rotates and advances around the outer contour of the high-voltage cable at a constant speed according to a spiral measurement path, namely the measurement module rotates around a circle center O at a constant speed and advances along an abscissa axis X at a constant speed, the measurement module advances M along the abscissa axis X every time the measurement module rotates 360 degrees, and the rotation radius r0Is a constant value and 2 r0The outer contour distance of a series of high-voltage cables is measured when the outer diameter D of the cable is larger than the outer diameter D of the cableValue r1(θi，xi)with a uniform rotation angle theta and abscissa X spacing in order to apply the high voltage cable outline fitting algorithm of claim 1.
3. the intelligent automatic cutting process for the high-voltage cable according to claim 1, wherein the process comprises the following steps: the measured series of distance values r1Performing linear fitting by using a series of measured distance values r1(θi，xi)Solving r of any position by linear fitting algorithm1(θ，x)And r(θ，x)The algorithm is as follows:
wherein p is the fitting period; taking a natural number of 2-8; m is the distance of the measurement module which rotates for a circle and advances on the abscissa axis X; thetai is the sampling point angle closest to the theta; xi is the abscissa of the sampling point closest to x, and x is more than xi and less than or equal to xi + M.
4. The intelligent automatic cutting process for the high-voltage cable according to claim 1, wherein the process comprises the following steps: quantifying the cutting process requirement of the high-voltage cable into a cutting depth Z along an abscissa axis X(x)(x is an abscissa) means that Z is determined at certain abscissa intervals according to the requirements of the high-voltage cable cutting process(xi)Sequence, a conventional sequence being { Z(0.1--0.1p),…,Z(-0.1),Z(0),Z(0.1),…,Z(249.9+0.1p),Z(250.0+0.1p)The cutting range in the abscissa direction is 0-250 mm, and the interval of the sequence abscissas is 0.1mm, and then a plurality of Z's are utilized(xi)Sequence numerical value is used for solving Z of any position through linear fitting algorithm(x)The algorithm is as follows:
Wherein p is the fitting period; taking a natural number of 2-8; delta is the spacing distance of the Z (xi) sequence on the abscissa axis X, and the unit is mm; xi is the abscissa of the sampling point closest to x, and x is more than xi and less than or equal to xi + delta.
5. The intelligent automatic cutting process for the high-voltage cable according to claim 4, wherein the process comprises the following steps: according to the characteristics and requirements of the high-voltage cable cutting process, Z is arranged at certain abscissa intervals(xi)The sequence is divided into five areas of a cutter entering area, a slope cutting area, a transition area, a smooth cutting area and a cutter retracting area, wherein:
The cutter entering area is a cutter following area and is used for overcoming the inertia of a cutter feeding system and reducing the cutter following error, generally Z(xi)The sequence value is gradually increased to 0 from a negative value;
The slope cutting area is an outer semi-conducting layer slope area in the high-voltage cable cutting process, Z(xi)The sequence numerical value is gradually increased from 0 to deltaSlopeThe specific numerical value is determined according to the thickness and tolerance of the outer semi-conductive layer of the high-voltage cable;
The smooth cutting zone is a completely removed outer semi-conducting layer zone in the high-voltage cable cutting process, Z(xi)Keeping sequence value at a certain fixed value deltaSmoothingThe specific numerical value is determined according to the thickness and tolerance of the outer semi-conductive layer of the high-voltage cable and the specific process requirement;
The transition area is an area between the slope cutting area and the smooth cutting area and is used for ensuring smooth transition of the outer surface of the high-voltage cable after the cutting process, Z(xi)sequence number is formed by deltaslopeGradually increases to deltaSmoothingthe value of the curve should form a smooth arc, and the slope of the two ends of the arc should be close to 0;
The tool withdrawing area is a tool withdrawing area and is used for rapidly withdrawing the tool to a safe position to prevent the tool from contacting or even colliding with the outer surface of the cable, and Z is(xi)sequence number is formed by deltaSmoothingGradually decreases to deltaRetracting knifeand the specific numerical value is determined according to the outer diameter of the high-voltage cable, the bending degree of the cable and the zero position of the cutter.
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