CN113899330B - Full-automatic measuring system for spiral rib lead of cladding pipe - Google Patents
Full-automatic measuring system for spiral rib lead of cladding pipe Download PDFInfo
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- CN113899330B CN113899330B CN202110957087.1A CN202110957087A CN113899330B CN 113899330 B CN113899330 B CN 113899330B CN 202110957087 A CN202110957087 A CN 202110957087A CN 113899330 B CN113899330 B CN 113899330B
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- cladding tube
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- guide rail
- hollow shaft
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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
- G01B21/02—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 length, width, or thickness
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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
- G01B21/22—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 angles or tapers; for testing the alignment of axes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention relates to the technical field of metal plastic forming process and equipment, and provides a full-automatic measuring system for spiral rib lead of a cladding tube, which comprises a hole type positioning mechanism, an angle measuring mechanism, a linear guide rail mechanism, a cladding tube supporting mechanism and a rack, wherein the hole type positioning mechanism is arranged on the rack; the hole-type positioning mechanism is used for positioning the position of a hole on the hole-type plate, the angle measuring mechanism is used for measuring the rotation angle of the hole-type plate, the linear guide rail mechanism is used for driving the hole-type positioning mechanism and the angle measuring mechanism to do linear motion along the axial direction of the cladding tube, and the cladding tube supporting mechanism is used for supporting and fixing the cladding tube; the hole type positioning mechanism comprises a hole type plate, a spring and a hollow shaft, and the angle measuring mechanism comprises an encoder, an end cover flange and a turntable bearing. The invention measures the lead of the spiral rib of the cladding tube under the set displacement through the encoder, converts an electric signal into a digital signal through the encoder, and displays and outputs the digital signal on the controller; the invention has the advantages of high automation degree, convenient use, high measurement precision, high efficiency and the like.
Description
Technical Field
The invention relates to the technical field of metal plastic forming processes and equipment, in particular to a full-automatic measuring system for a spiral rib lead of a cladding tube.
Background
The spiral rib cladding tube is characterized in that the nuclear fuel tubes are separated from each other by ribs protruding out of the surface of the cladding tube on the outer side wall of the cladding tube, a specified gap between the fuel rods is maintained, and radial positioning between the fuel tubes is further realized. The spiral ribs on the outer side wall of the cladding tube can realize radial positioning among fuel tubes, enhance structural stability, promote fluid mixing and enhance the heat transfer performance of a coolant, and are important components in the operating condition of a reactor. The guarantee of no damage to the fuel elements and the integrity of the cladding during the entire service life of the cladding is an important prerequisite and a main limiting factor for ensuring the normal economic and efficient operation of the reactor. The uniform distribution of the spiral ribs in the axial direction of the cladding pipe according to the specific length realizes the stable radial positioning between the cladding pipes with a certain length all the time, and is one of the important functions of the cladding pipes.
However, in the process of measuring the spiral rib lead of the cladding tube at present, no good method and device are available for realizing high-precision full-automatic measurement of the spiral rib lead of the cladding tube with any length.
Disclosure of Invention
The invention aims to overcome at least one of the defects of the prior art and provides a full-automatic measuring system for a spiral rib lead of a cladding tube, which can realize full-automatic measurement of the spiral rib lead of the cladding tube with any length. The system has the advantages of high automation degree, convenient use, high measurement precision and high efficiency.
The invention adopts the following technical scheme:
a full-automatic measuring system for spiral rib lead of a cladding tube comprises a hole type positioning mechanism, an angle measuring mechanism, a linear guide rail mechanism, a cladding tube supporting mechanism and a rack;
the hole-type positioning mechanism is used for positioning the position of a hole on the hole-type plate, the middle part of the hole-type plate is provided with a hole corresponding to the cladding tube, and when the hole-type plate moves along the axial direction of the cladding tube, the hole-type plate can do circumferential rotation motion around the cladding tube in a plane vertical to the axial line of the cladding tube under the action of the spiral rib of the cladding tube; the hole-shaped plate is carried by the linear guide rail mechanism;
the angle measuring mechanism is used for measuring the rotating angle of the hole-shaped plate;
the linear guide rail mechanism is used for driving the hole type positioning mechanism and the angle measuring mechanism to do linear motion along the axial direction of the cladding tube;
the cladding tube supporting mechanism is used for supporting and fixing a cladding tube;
the hole-shaped positioning mechanism and the angle measuring mechanism are both fixedly arranged on the linear guide rail mechanism through connecting pieces; the linear guide rail mechanism and the cladding tube supporting mechanism are arranged on the rack.
Any one of the above possible implementation manners further provides an implementation manner, and the hole-type positioning mechanism comprises the hole-type plate, a pre-tightening spring and a hollow shaft;
one end of the hollow shaft is provided with a plane circular plate perpendicular to the axis of the hollow shaft, a plurality of sliding grooves are radially arranged on the plane circular plate, and the outermost end of each sliding groove is provided with the pre-tightening spring;
the hole-shaped plate is divided into a plurality of blocks with the same shape, and the number of the blocks is the same as that of the sliding grooves; one side of each hole-shaped plate is provided with a sliding block protruding out of the plane of the hole-shaped plate, the sliding block corresponds to the sliding groove and can slide in the sliding groove, and the sliding block can only approach to or move away from the axis when sliding; the hole patterns corresponding to the cladding tubes are formed when the plurality of hole pattern plates are combined; the other side of the hole-shaped plate is fixed by the rear end cover, so that the hole-shaped plate and the hollow shaft are ensured not to have relative displacement in the axial direction;
the sliding blocks slide in the sliding grooves under the elastic force of the pre-tightening springs to drive the hole-shaped plates to move radially close to or away from each other, and the hole shapes corresponding to the cladding pipes are formed in the centers of the hole-shaped plates in a positioning mode when the hole-shaped plates are closed;
the hole-shaped plate and the hollow shaft rotate synchronously.
In any possible implementation manner as described above, an implementation manner is further provided, where the hole-shaped plate is four, and the number of the sliding blocks, the sliding grooves, and the pre-tightening springs is four.
There is further provided in accordance with any of the possible implementations described above an implementation in which the angle measuring mechanism includes an encoder, an end cap flange, a turntable bearing;
the turntable bearing is divided into an inner ring and an outer ring, the inner ring and the outer ring are connected through steel balls, the outer ring of the turntable bearing is fixed on the connecting piece, the connecting piece is fixed on the linear guide rail mechanism, and the inner ring of the turntable bearing is fixed on the hollow shaft; the hollow shaft can rotate around the shaft in the turntable bearing;
the end cover flange is arranged on the connecting piece, is positioned on the outer side of the turntable bearing outer ring and is used for limiting the axial displacement of the turntable bearing outer ring;
the encoder is arranged on the end cover flange through the end part and is provided with an internal bearing, the internal bearing is sleeved on the hollow shaft, and the internal bearing and the hollow shaft synchronously rotate; the encoder is used for measuring the rotating angle of the hollow shaft installed in the encoder.
In any of the above possible implementation manners, there is further provided an implementation manner, where the linear guide rail mechanism includes a ball screw linear guide rail sliding table, the connecting piece, a driver, a controller, a motor, and a power supply; and a displacement value is input through the controller, and under the combined action of the power supply, the driver, the motor and the ball screw linear guide rail sliding table, the angle measuring mechanism and the hole type positioning mechanism which are arranged on the ball screw linear guide rail sliding table are driven to run along the axial straight line of the cladding tube to set the displacement value.
There is further provided in any of the possible implementations described above an implementation in which the controller is further configured to display the output angle and displacement on a screen; the driver is used for driving the motor to rotate and providing temperature protection and overcurrent protection for the whole device; the motor provides power for the linear guide rail sliding table mechanism, and the power is transmitted through the lead screw and converted into linear displacement; the power supply is used for converting 220V alternating current into direct current for output.
In any of the above possible implementations, there is further provided an implementation in which the cladding tube supporting mechanism is two oppositely disposed cross-bar linkages, each cross-bar linkage comprising a supporting seat, a vertical supporting rod, a cross connecting member, a cross bar, and a chuck; the clamping head is used for clamping the cladding tube; one end of the cross rod is provided with threads and is connected with the chuck through the threads; the other end of the cross rod is connected with one end of the vertical supporting rod through a cross connecting piece; the other end of the vertical supporting rod is connected with the supporting seat; the supporting seat is connected with the frame.
There is further provided in any of the possible implementations described above an implementation in which the hole pattern on the hole pattern plate is comprised of a groove, the groove comprising a circular portion and a rectangular portion, the circular portion being the same size as the circular portion of the cross-section of the spiral-ribbed containment tube, and the rectangular portion being 0.1-0.15mm smaller than the cross-sectional size of the spiral ribs of the cross-section of the spiral-ribbed containment tube to prevent interference between the hole pattern plates.
Any possible implementation manner is further provided, the hole-type plate has a certain thickness, the groove of the hole type is machined with a chamfer, the contact part between the hole-type plate (in the thickness direction) and the spiral rib cladding tube is small during measurement, certain strength of the hole-type plate during measurement is ensured, and the phenomenon that the measurement precision is influenced due to the fact that the dimension of the contact part between the thickness direction of the hole-type plate and the spiral rib of the cladding tube is too long is avoided.
In any possible implementation manner, an implementation manner is further provided, wherein the displacement distance L of the sliding table of the ball screw linear guide rail, the rotating angle α of the hole-shaped plate and the actual lead S of the detected cladding tube are In fact And satisfies the following relation:
in the formula, L is the distance traveled by the ball screw linear guide rail sliding table; alpha is the angle of the hole plate, S In fact For the measured actual lead of the cladding tube, a value S is given for the cladding tube Given the And comparing to obtain the error.
In any of the above possible implementations, there is further provided an implementation that the connecting member is provided with a stepped hole for installing a turntable bearing. The upper part is also provided with a positioning hole, the positioning holes parallel to the step hole are respectively used for installing an angle measuring mechanism and a hole type positioning mechanism, and the positioning hole which is positioned at the lower end of the connecting piece and is vertical to the step hole is used for fixing the connecting piece on the ball screw linear guide rail sliding table.
In any of the possible implementations described above, there is further provided an implementation in which the cladding tube being measured is a helical rib cladding tube of any length having a lead.
The beneficial effects of the invention are as follows:
1. the measurement accuracy is high: the angle and the displacement are subjected to data acquisition through the encoder, and the measurement precision is high.
2. The measurement efficiency is high: the whole device is simple and convenient, and the lead of the spiral rib of the cladding tube with any length can be measured.
3. The automation degree is high: the angle and the displacement value are read and output by the controller, so that errors caused by manual reading are reduced, the automation degree is high, and manpower is saved.
Drawings
Fig. 1 is a schematic structural diagram of a fully automatic measurement system for a spiral rib lead of a cladding tube according to an embodiment of the present invention.
Fig. 2 is a schematic structural view showing a structure in which the linear guide mechanism is mounted on the frame in the embodiment.
Fig. 3 is a schematic structural view of the connecting member in the embodiment.
Fig. 4 is a schematic structural diagram of the angle measuring mechanism and the hole type positioning mechanism mounted on the connecting piece in the embodiment.
Fig. 5 is a schematic structural diagram of the hole type positioning mechanism in the embodiment.
Fig. 6 is a schematic structural diagram of the assembly of the hole plate in the embodiment.
Fig. 7 is a schematic structural view of the hole plate in the embodiment.
Fig. 8 is a schematic structural view of the hollow shaft in the embodiment.
Fig. 9 is a schematic structural view of a cross link mechanism in the embodiment.
Fig. 10 shows a schematic structural view of a spiral rib cladding tube in an embodiment.
In the figure: 1. a power source; 2. a driver; 3. a motor; 4. a controller; 5. a ball screw linear guide rail sliding table; 6. a connecting member; 7. a rear end cap; 8. a hole-shaped plate; 9. an end cap flange; 10. an encoder; 11. a hollow shaft; 12. a turntable bearing; 13. pre-tightening the spring; 14. a supporting seat; 15. a vertical support bar; 16. a cross-shaped connector; 17. a cross bar; 18. a chuck; 19. a frame; g. the spiral rib cladding tube.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the specific drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the various drawings denote the same features or components, and may be applied to different embodiments.
As shown in fig. 1, a full-automatic measuring system for spiral rib lead of a cladding tube according to an embodiment of the present invention includes an angle measuring mechanism, a hole type positioning mechanism, a linear guide rail mechanism, a cladding tube supporting mechanism and a frame 19; the angle measuring mechanism is used for measuring the angle rotated by the hollow shaft 11 passing through the encoder 10 (namely the angle rotated by the hole plate 8); the hole-type positioning mechanism is used for positioning and pre-tightening the hole-type plate 8 and the outer surface of the spiral rib cladding tube g; the linear guide rail mechanism is used for driving the angle measuring mechanism and the hole pattern positioning mechanism to do linear motion along the axial direction of the cladding tube g; the cladding tube supporting mechanism is used for supporting and fixing a cladding tube g; the angle measuring mechanism and the hole pattern positioning mechanism are arranged on the linear guide rail mechanism through a connecting piece 6; the linear guide rail mechanism and the cladding tube supporting mechanism are both arranged on the rack 19.
As a specific embodiment, as shown in fig. 2, the linear guide rail mechanism includes a ball screw linear guide rail sliding table 5, a connecting piece 6, a driver 2, a controller 4, a motor 3 and a power supply 1, and is mounted on a frame 19 through screws and nuts; through controller 4 inputs displacement numerical value under the combined action of power 1, driver 2, motor 3 and ball linear guide slip table 5, the drive is installed on ball linear guide slip table 5 the displacement value that angle measurement mechanism set for along cladding pipe g axial straight line operation.
As a specific example, as shown in fig. 3, the connecting member 6 is provided with a stepped hole for mounting the turntable bearing 12. The connecting piece 6 is also provided with a positioning hole, the positioning hole parallel to the step hole is respectively used for installing an angle measuring mechanism and a hole type positioning mechanism, and the positioning hole which is positioned at the lower end of the connecting piece 6 and is vertical to the step hole is used for fixing the connecting piece 6 on the ball screw linear guide rail sliding table 5.
As a specific embodiment, as shown in fig. 4, the angle measuring mechanism includes an encoder 10, an end cover flange 9 and a turntable bearing 12, the turntable bearing 12 is divided into an inner ring and an outer ring, the inner ring and the outer ring are connected by steel balls, the outer ring of the turntable bearing 12 is fixed on the connecting piece 6 by screws, the inner ring of the turntable bearing 12 is connected with the hollow shaft 11 by screws, and the hollow shaft 11 can freely rotate in the circumferential direction under the combined action of the inner ring and the outer ring of the turntable bearing 12. The end cover flange 9 is connected with the outer ring of the turntable bearing 12 and the connecting piece 6 through screws (the end cover flange 9 is positioned outside the outer ring of the turntable bearing 12), and is always kept in a relative static state with the connecting piece 6. The inside bearing that takes of encoder 10 can measure the angle that the inside bearing of encoder 10 rotated, and encoder 10 passes through the fix with screw on end cover flange 9, and the bearing suit of the inside of encoder 10 is on hollow shaft 11 to through encoder 10 from the locking device who takes and hollow shaft 11 keep relative quiescent condition.
As a specific embodiment, as shown in fig. 5, the hole-type positioning mechanism includes a hole-type plate 8, a pre-tightening spring 13 and a hollow shaft 11, the hole-type plate 8 has a slide block, the size of the slide block is the same as that of the sliding slot on the hollow shaft 11, the pre-tightening spring 13 is installed at the tail of the sliding slot, and the hole-type plate 8 can be simultaneously drawn together in the radial direction under the action of the pre-tightening spring 13. When the hole-shaped plate 8 moves axially along the cladding tube g, the hole-shaped plate 8 can do circumferential rotation motion around the cladding tube g in a plane vertical to the axis of the cladding tube g under the action of the spiral ribs of the cladding tube g.
As a specific example, as shown in fig. 6, the hole-type positioning mechanism comprises four identical hole-type plates g, the groove of the hole type on the hole-type plate 8 is composed of a circular part and a rectangular part, the circular part has the same size as the circular part of the cross section of the spiral rib cladding tube g, and the rectangular part is about 0.1mm smaller than the spiral rib cross section of the spiral rib cladding tube g, so as to prevent interference between the hole-type plates 8.
As a specific embodiment, as shown in fig. 7, the hole-shaped plate 8 has a certain thickness, and a chamfer is machined on a groove portion of the hole shape, so as to ensure that the dimension of a contact portion (in the thickness direction of the hole-shaped plate) between the hole-shaped plate 8 and the spiral rib cladding tube g is about 0.5mm during measurement, thereby ensuring that the hole-shaped plate 8 has certain strength during measurement, and avoiding the influence on measurement accuracy due to the overlong dimension of the contact portion between the thickness direction of the hole-shaped plate 8 and the spiral rib section direction of the cladding tube g.
As a specific embodiment, as shown in fig. 8, one end of the hollow shaft 11 is provided with a planar circular plate perpendicular to the axis of the hollow shaft, the radial direction of the planar circular plate is provided with a plurality of sliding grooves, the outermost end of each sliding groove is provided with the pre-tightening spring 13, the sliding grooves are matched with sliding blocks on the hole-shaped plate 8, so that the hole-shaped plate 8 can only approach or leave towards the axis, and is in a relatively static state with the hollow shaft 8 along the direction perpendicular to the shaft, so as to ensure that the hole-shaped plate 8 and the hollow shaft 11 rotate simultaneously, and finally, the axial position of the hole-shaped plate 8 is limited by the rear end cover 7; the other side of the hollow shaft 11 is used for mounting the encoder 10 and the end flange 9.
As a specific example, as shown in fig. 9, the cladding tube supporting mechanism is two oppositely arranged cross-shaped link mechanisms, and the cross-shaped link mechanisms comprise a supporting seat 14, a vertical supporting rod 15, a cross-shaped connecting piece 16, a cross bar 17 and a clamping head 18; the clamping head 18 is used for clamping a cladding tube g; one end of the cross rod 17 is provided with threads and is connected with the chuck 18 through the threads; the other end of the cross bar 17 is connected with one end of the vertical support bar 15 through a cross connecting piece 16; the other end of the vertical support rod 15 is connected with the support seat 14; the support base 14 is connected to a frame 19. The relative position of the clamping head 18 and thus the cladding tube g can be adjusted by means of the cross connection 16 and the support base 14.
As shown in fig. 10, the spiral-rib cladding tube g of the measured object is any spiral-rib cladding tube with a certain lead.
The working principle of the invention is as follows:
the two ends of a cladding tube g passing through a hole-shaped plate 8 are respectively clamped by a chuck 18, a certain displacement is input on a controller 4, under the driving of a power supply 1, a driver 2, a motor 3 and a ball screw linear guide rail sliding table 5, an angle measuring device and a hole-type positioning device which are fixed on a connecting piece 6 through a turntable bearing 12 rotate a certain angle along with a spiral rib on the cladding tube g, and the lead of the cladding tube g with any length can be calculated through the angle read by an encoder 10 and the input linear displacement value.
The displacement distance L of the ball screw linear guide rail sliding table 5 and the rotating angle of the hole-shaped plate 8Alpha and the actual lead S of the cladding tube g measured Practice of The following relational expression is satisfied:
in the formula, L is the distance traveled by the ball screw linear guide rail sliding table 5; alpha is the angle of rotation of the hole pattern plate 8, S Practice of For the actual lead of the measured cladding tube g, a value S is given for the cladding tube g Given the And comparing to obtain the error.
The following is a specific example:
the diameter of a screw rod of a sliding table 5 of the ball screw linear guide rail is 12mm, the thread pitch is 4mm, the running speed is 0-50mm/s, the linear stroke is 500mm, and the positioning precision is 0.03mm. The encoder 10 has a sampling frequency of 15khz, a communication rate of 9600, and pulses of 7200. The thickness of the hole-shaped plate 8 is 5mm, wherein the height of the slide block is 3mm, and the contact part of the hole-shaped plate and the cladding tube g is 0.5mm. One side of the cross bar 17 is processed with M12X 1.25mm screw threads for fixing the chuck 18. The measured piece is 5mm in inner diameter, 6mm in outer diameter, 0.7mm in rib width and 0.5mm in rib height, and the lead of the spiral rib of the cladding tube can be measured fully automatically by the method.
The invention inputs a certain displacement on a controller 4, under the drive of a power supply 1, a driver 2, a motor 3 and a ball screw linear guide rail sliding table 5, an angle measuring mechanism and a hole type positioning mechanism which are fixed on a connecting piece 6 through a turntable bearing 12 rotate a certain angle along with a spiral rib on a cladding tube g, and the lead of the cladding tube g with any length can be calculated through the angle read by an encoder 10 and the input linear displacement value (the lead of the spiral rib of the cladding tube g under the displacement can be measured through the encoder 10 connected with a hollow shaft 11, pulse signals are converted to electric signals for the lead amount, and then the electric signals are converted into digital signals through the encoder 10 and are displayed and output on the controller 4). The invention has the advantages of simple integral structure, convenient measurement, high measurement precision, high efficiency and the like.
While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes may be made to the embodiments herein without departing from the spirit of the invention. The above examples are merely illustrative and should not be taken as limiting the scope of the invention.
Claims (9)
1. A full-automatic measuring system for a spiral rib lead of a cladding tube is characterized by comprising a hole type positioning mechanism, an angle measuring mechanism, a linear guide rail mechanism, a cladding tube supporting mechanism and a rack;
the hole-type positioning mechanism is used for positioning the position of a hole on the hole-type plate, the middle part of the hole-type plate is provided with a hole corresponding to the cladding tube, and when the hole-type plate moves along the axial direction of the cladding tube, the hole-type plate can do circumferential rotation motion around the cladding tube in a plane vertical to the axial line of the cladding tube under the action of the spiral rib of the cladding tube; the hole-shaped plate is carried by the linear guide rail mechanism;
the angle measuring mechanism is used for measuring the rotating angle of the hole-shaped plate;
the linear guide rail mechanism is used for driving the hole type positioning mechanism and the angle measuring mechanism to do linear motion along the axial direction of the cladding tube;
the cladding tube supporting mechanism is used for supporting and fixing a cladding tube;
the hole-shaped positioning mechanism and the angle measuring mechanism are both fixedly arranged on the linear guide rail mechanism through connecting pieces; the linear guide rail mechanism and the cladding tube supporting mechanism are arranged on the rack;
the hole-type positioning mechanism comprises a hole-type plate, a pre-tightening spring and a hollow shaft;
a plane circular plate perpendicular to the axis of the hollow shaft is arranged at one end of the hollow shaft, a plurality of sliding grooves are radially arranged on the plane circular plate, and the outermost end of each sliding groove is provided with the pre-tightening spring;
the hole-shaped plate is divided into a plurality of blocks with the same shape, and the number of the blocks is the same as that of the sliding grooves; each hole-shaped plate is provided with a sliding block protruding out of the plane of the hole-shaped plate, and the sliding block corresponds to the sliding groove and can slide in the sliding groove; the hole patterns corresponding to the cladding tubes are formed when the plurality of hole pattern plates are combined;
the sliding blocks slide in the sliding grooves under the elastic force of the pre-tightening springs to drive the hole-shaped plates to move radially close to or away from each other, and the hole shapes corresponding to the cladding pipes are formed in the centers of the hole-shaped plates in a positioning mode when the hole-shaped plates are closed;
the hole-shaped plate and the hollow shaft rotate synchronously.
2. The system of claim 1, wherein said aperture-shaped plate is divided into four pieces, and wherein said slide blocks, slide slots, and pre-tension springs are all four in number.
3. The system of claim 1, wherein said angle measuring mechanism includes an encoder, an end cap flange, a turntable bearing;
the turntable bearing is divided into an inner ring and an outer ring, the inner ring and the outer ring are connected through steel balls, the outer ring is fixed on the connecting piece, the connecting piece is fixed on the linear guide rail mechanism, and the inner ring is fixed on the hollow shaft; the hollow shaft can rotate around the shaft in the turntable bearing;
the end cover flange is arranged on the connecting piece, is positioned on the outer side of the outer ring and is used for limiting the axial displacement of the outer ring;
the encoder is arranged on the end cover flange through the end part and is provided with an internal bearing, the internal bearing is sleeved on the hollow shaft, and the internal bearing and the hollow shaft synchronously rotate; the encoder is used for measuring the rotating angle of the hollow shaft installed in the encoder.
4. The system of claim 1, wherein said linear guide mechanism comprises a ball screw linear guide ramp, said connector, a driver, a controller, a motor, and a power source; and a displacement value is input through the controller, and under the combined action of the power supply, the driver, the motor and the ball screw linear guide rail sliding table, the angle measuring mechanism and the hole type positioning mechanism which are arranged on the ball screw linear guide rail sliding table are driven to run along the axial straight line of the cladding tube to set the displacement value.
5. The system of fully automated measurement of a cladding tube helical rib lead of claim 4, wherein said controller is further for displaying the outputted angle and displacement on a screen; the driver is used for driving the motor to rotate and providing temperature protection and overcurrent protection for the whole system; the motor provides power for the linear guide rail sliding table mechanism, and the power is transmitted through the lead screw and converted into linear displacement; the power supply is used for converting 220V alternating current into direct current for output.
6. The system of claim 4, wherein said cladding tube support mechanism is two oppositely disposed cross-bar linkages including a support base, a vertical support bar, a cross-connector, a cross-bar and a collet; the clamping head is used for clamping the cladding tube; one end of the cross rod is provided with a thread and is connected with the chuck through the thread; the other end of the cross rod is connected with one end of the vertical supporting rod through a cross connecting piece; the other end of the vertical supporting rod is connected with the supporting seat; the supporting seat is connected with the frame.
7. The system of claim 1 wherein said hole pattern is comprised of grooves comprising circular portions of the same size as the circular portions of the cross-section of the spiral-ribbed containment tube and rectangular portions of 0.1-0.15mm smaller than the cross-sectional size of the spiral ribs of the cross-section of the spiral-ribbed containment tube to prevent interference between the pieces of said hole pattern.
8. The system for fully automatically measuring a cladding tube spiral rib lead of claim 7, wherein said hole pattern has a thickness and the groove of the hole pattern is chamfered.
9. The system of claim 4, wherein the ball screw linear guide track slip displacement distance L, the angle α through which the hole pattern plate rotates, and the actual lead S of the cladding tube being measured In fact And satisfies the following relation:
in the formula, L is the distance traveled by the ball screw linear guide rail sliding table; alpha is the angle of the pass plate, S In fact For the measured actual lead of the cladding tube, a value S is given for the cladding tube Given the And comparing to obtain the error.
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| CN202110957087.1A CN113899330B (en) | 2021-08-19 | 2021-08-19 | Full-automatic measuring system for spiral rib lead of cladding pipe |
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| CN202110957087.1A CN113899330B (en) | 2021-08-19 | 2021-08-19 | Full-automatic measuring system for spiral rib lead of cladding pipe |
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