CN117340333B - Self-checking copper pipe surface milling device and detection method - Google Patents

Abstract

The invention relates to the technical field of copper pipe milling surface processing, in particular to a self-checking copper pipe milling surface device and a detection method, wherein a rear positioning piece, a correcting piece, a detection component, a milling cutter component and a front positioning piece are sequentially arranged along the copper pipe feeding direction, after a milling cutter jumps the milling cutter, the copper pipe is bent upwards at the moment, the copper pipe bends to enable detection wheels on two sides of the copper pipe to generate displacement difference vertically, as a sliding block can move along the copper pipe length direction, the turntable can rotate with three milling cutters and rotate along the copper pipe bending direction, the copper pipe further pushes the sliding block to reciprocate, the detection wheels move along the copper pipe length direction and do not influence the jump of the copper pipe, the jump of the copper pipe drives the detection wheels to move, whether the jumping cutter is judged through the movement of the detection wheels of a sensor, the shutdown alarm is found after the jumping cutter, the jumping copper pipe is prevented from further damaging a milling cutter main shaft, the self-checking of the copper pipe milling surface device is realized, the working state of the copper pipe milling surface device can be monitored timely, and the cost is reduced.

Description

Self-checking copper pipe surface milling device and detection method

Technical Field

The invention relates to the technical field of copper pipe milling, in particular to a self-checking copper pipe milling device and a detection method.

Background

In the process of producing the copper pipe, the copper pipe is firstly subjected to horizontal continuous casting to be processed into a pipe blank, then the pipe blank cast from a smelting furnace is subjected to milling processing through a face milling machine, defects on the outer surface of the pipe blank and oxide skin on the outer surface are milled, and the outer surface of the copper pipe is removed and trimmed through a milling process by utilizing a rotary cutter so as to meet the requirements of flatness, smoothness and precision.

At present, the milling cutter overall structure is compact, the milling cutter needs to rotate, detection equipment such as a sensor is directly added on the milling cutter and the like is difficult to realize, and then the milling cutter trampling knife cannot detect, if the milling cutter is not stopped in time, a copper pipe can further damage the milling cutter, even damage a milling cutter main shaft, and the cost of a milling surface device is increased.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention provides a self-checking copper pipe face milling device and a detection method, thereby effectively solving the problems pointed out in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a self-checking copper tube face milling device, comprising:

a rear positioning piece, a correcting piece, a detecting component, a milling cutter component and a front positioning piece are sequentially arranged along the feeding direction of the copper pipe;

the rear positioning piece and the front positioning piece comprise positioning wheels positioned at two sides of the copper pipe and are respectively used for clamping and positioning the copper pipe at the inlet and the outlet of the device;

the correcting piece is used for preliminary correction of the copper pipe;

the milling cutter assembly includes: the copper pipe milling device comprises a turntable and milling cutters, wherein at least three milling cutters are circumferentially distributed on the turntable on the copper pipe, a main shaft is arranged between the milling cutters and the turntable, the milling cutters rotate along the axis of the main shaft, and meanwhile, the turntable drives the milling cutters and the main shaft to rotate for milling the outer surface of the copper pipe;

the detection assembly comprises a sliding seat and two single-side assemblies respectively arranged at two sides of the copper pipe, and each single-side assembly comprises a sliding block, a detection wheel and a sensor; the two sliding blocks are arranged on the sliding seat, each detection wheel is arranged on the corresponding sliding block, and elastic pieces are further arranged on two sides of the sliding block along the length direction of the copper pipe; the two detection wheels are tightly attached to two sides of the copper pipe, each sliding block drives the corresponding detection wheel to move along the length direction of the copper pipe, and each sensor is used for detecting the displacement of the corresponding sliding block in the length direction of the copper pipe.

Further, the milling cutter assembly is located at an intermediate position of the front positioning member and the correcting member.

Further, two sliding seats are arranged, the detection assembly further comprises a box body with an opening at the top, and a guide rail and a screw rod which are perpendicular to the length direction of the copper pipe are arranged on the bottom wall of the box body; the guide block is arranged at the bottom of the sliding seat and is in translational sliding on the guide rail, the screw rod penetrates through the two sliding seats, and the screw rod is rotated to enable the two sliding seats to be close to or far away from each other, so that the distance between the two sliding seats is adjusted.

Further, the tail end of the screw rod is provided with a rotating wheel, and the rotating wheel is provided with anti-skid patterns.

Further, the elastic piece is a spring; each sliding seat is provided with a guide rod, and the guide rods penetrate through the corresponding sliding blocks; the spring is sleeved on the guide rod.

Further, in each single-side assembly, a travel amplifier is arranged on one side, away from the copper pipe, of the sliding block, and the travel amplifier is connected with the sensor through a connecting piece.

Further, a large-diameter cylinder is arranged in the stroke amplifier, a large piston is arranged in the large-diameter cylinder, the large piston is connected with the sliding block, a small-diameter cylinder is arranged in the connecting piece, a small piston is arranged in the small-diameter cylinder, the small piston is connected with the sensor, the diameter of the large-diameter cylinder is larger than that of the small-diameter cylinder, and the large-diameter cylinder is communicated with the small-diameter cylinder.

Further, the connecting piece is provided with an oil filling port, and two ends of the oil filling port are respectively communicated with the outside and the small-diameter cylinder.

The invention also discloses a detection method of the self-checking copper pipe surface milling device, which comprises the following steps:

setting an average threshold ave0 and a standard deviation threshold sigma 0;

two sensor readings are taken at each interval t, respectively: x1, xf, each reading is recorded Δ= x1-Xf;

after n reads, the calculation is started: average ave n and standard deviation σn of Δn-9, Δn-8 … … Δn;

after each calculation, comparing the average ave n and the standard deviation sigma n with an average threshold ave0 and a standard deviation threshold sigma 0 to determine whether the average ave n and the standard deviation sigma 0 are within a preset range, if so, working normally, and if not, stopping for alarming.

Further, the calculation model of the interval t is as follows: t=n×30/N;

n is the rotation speed of the milling cutter along the copper pipe, the unit is r/min, t is the time interval between two readings, and the unit is s; n is a positive odd number.

By the technical scheme of the invention, the following technical effects can be realized: through be equipped with back setting element, correct piece, detection component, milling cutter subassembly and preceding setting element in proper order along copper pipe direction of feed, give the biasing force after having milling cutter bungee wherein, the atress is by a wide margin, can make the copper pipe upwards crooked this moment, the radial clamping force disappearance of milling cutter leads to the copper pipe crooked, copper pipe bending makes the vertical displacement difference of the detection wheel of copper pipe both sides, owing to detect the wheel bottom and be equipped with the slider, the slider will follow copper pipe length direction and remove, again owing to the carousel can take three milling cutters to rotate, will take the crooked direction of copper pipe to rotate together, the copper pipe and then promote the slider and produce reciprocating motion, the elastic component of slider both sides makes the slider reset, so the detection wheel removes along copper pipe length direction and can not influence the beat of copper pipe, and the beat of copper pipe drives the detection wheel and remove, judge whether bungee through the removal of sensor detection wheel, shut down the warning after finding the bungee, prevent that the copper pipe from further damaging other milling cutters and milling cutter main shaft, realize the self-detection of copper pipe milling face device, can in time monitor the operating condition of face milling device, thereby the cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of a milling cutter during normal milling;

FIG. 2 is another schematic view of the milling cutter during normal milling;

FIG. 3 is a schematic view of the milling cutter after the trampoline is formed;

FIG. 4 is another schematic view of the milling cutter after the trampoline is formed;

FIG. 5 is a schematic view of the position of the detection wheel during normal force application of the milling cutter;

FIG. 6 is a schematic view of the position of the detection wheel when a biasing force is applied after a milling cutter trampling;

fig. 7 is a schematic structural diagram of a self-checking copper tube face milling device;

FIG. 8 is a schematic structural view of a milling cutter assembly;

FIG. 9 is a schematic diagram of a detection assembly;

FIG. 10 is a schematic view of the structure of two single-sided components;

FIG. 11 is a cross-sectional view of the sensing assembly at the center of the sensing wheel;

FIG. 12 is a cross-sectional view of the sensing assembly at the sensor;

FIG. 13 is a schematic view of the jump of the copper tube after the jump of the milling cutter;

FIG. 14 is a cross-sectional view at A-A in FIG. 13;

fig. 15 is a flow chart of a method of detecting a self-checking copper tube face milling device.

Reference numerals: 1. a rear positioning member; 11. a positioning wheel; 2. a correcting member; 3. a detection assembly; 31. a slide; 32. a slide block; 321. a guide block; 33. a detection wheel; 34. a sensor; 35. an elastic member; 351. a guide rod; 36. a case body; 361. a guide rail; 37. a screw rod; 371. a rotating wheel; 371a, anti-skid lines; 38. a stroke amplifier; 381. a large diameter cylinder; 382. a large piston; 39. a connecting piece; 391. a small diameter cylinder; 392. a small piston; 393. an oil filling port; 4. a milling cutter assembly; 41. a turntable; 42. a milling cutter; 43. a main shaft; 5. a front positioning member;

01. copper pipe.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 12: a self-checking copper tube face milling device, comprising:

a rear positioning piece 1, a correcting piece 2, a detecting component 3, a milling cutter component 4 and a front positioning piece 5 are sequentially arranged along the feeding direction of the copper pipe 01;

the rear positioning piece 1 and the front positioning piece 5 comprise positioning wheels 11 positioned at two sides of the copper pipe 01 and respectively used for clamping and positioning the copper pipe 01 at an inlet and an outlet of the device, so that the stability of the position of the copper pipe 01 in the processing process is ensured, and meanwhile, the power and the guide are provided for the advancing of the copper pipe 01;

the correcting piece 2 is used for primarily correcting the copper pipe 01, so that the copper pipe 01 is straighter, bending is reduced, and the product quality is improved;

the milling cutter assembly 4 comprises: the copper tube grinding device comprises a turntable 41 and milling cutters 42, wherein at least three milling cutters 42 are circumferentially distributed on the turntable 41 on the copper tube, a main shaft 43 is arranged between the milling cutters 42 and the turntable 41, the milling cutters 42 rotate along the axis of the main shaft 43, and meanwhile, the turntable 41 drives the milling cutters 42 and the main shaft 43 to rotate and is used for milling the outer surface of the copper tube 01 so as to realize the processing and the trimming of the copper tube 01;

the detection assembly 3 comprises a sliding seat 31 and two single-side assemblies respectively arranged on two sides of the copper pipe, and each single-side assembly comprises a sliding block 32, a detection wheel 33 and a sensor 34; the two sliding blocks 32 are arranged on the sliding seat 31, each detection wheel 33 is arranged on the corresponding sliding block 32, and elastic pieces 35 are arranged on two sides of the sliding block 32 along the length direction of the copper pipe 01; two detection wheels 33 are tightly attached to two sides of the copper tube 01, each sliding block 32 drives the corresponding detection wheel 33 to move along the length direction of the copper tube 01, and each sensor 34 is used for detecting the displacement of the corresponding sliding block 32 in the length direction of the copper tube 01. Because the milling cutter 42 is capable of stably feeding and jumping in front and back of the jumping knife, the detection assembly 3 can monitor the motion state of the copper pipe 01 in real time through the combination of the sliding block 32, the detection wheel 33 and the sensor 34, and judge the motion state of the copper pipe 01, especially the jumping degree of the copper pipe 01 when jumping occurs, and further judge whether the milling cutter 42 is capable of stopping working and giving an alarm in time when jumping occurs, so that other parts are prevented from being damaged further.

The following specifically explains the movement state of the copper pipe 01 before and after the bouncing knife of the milling cutter 42:

before the milling cutter 42 jumps the cutter, the copper pipe 01 is in a stable feeding state:

as shown in fig. 1 and 2, when the milling cutter 42 mills normally, the forces given by the three milling cutters 42 face the center of the copper pipe 01, so that the machining forces of the milling cutters 42 are mutually offset to reach an equilibrium state, the copper pipe 01 can be clamped normally by the cooperation of the three milling cutters 42, and the copper pipe 01 does not jump at the moment and is fed normally and stably; at this time, at the detecting assembly 3, although the sliding block 32 can move along the length direction of the copper pipe 01, as shown in fig. 5, at this time, the detecting wheel 33 applies a force perpendicular to the length direction of the copper pipe 01, so that the movement of the sliding block 32 does not affect the force applied by the detecting wheel 33, and the detecting wheel 33 can also play a role in positioning, and the clamping force of the detecting wheel 33 is matched with the normal force applied by the milling cutter 42 to radially fix the copper pipe 01.

After the milling cutter 42 jumps the cutter, the copper pipe 01 becomes a jumping state:

when the milling cutter 42 is jumped, the three milling cutters 42 form a bias force on the copper pipe 01, for example, in the situation of fig. 4, when the milling cutter 42 is jumped at the top, the milling cutter 42 at the top is damaged, and the other two milling cutters 42 continue to apply pressure to the outer diameter of the copper pipe 01, at this time, the copper pipe 01 can be bent upwards as shown in fig. 3, then the turntable 41 can drive the three milling cutters 42 to rotate, the copper pipe 01 can generate jump as shown in fig. 13, at this time, if the copper pipe 01 is not stopped timely, the three milling cutters 42 can be continuously impacted along with the jump of the copper pipe 01, so that other milling cutters 42, even the main shafts of the milling cutters and the turntable are damaged.

When the movable detection wheel 33 designed by the detection assembly 3 is bent due to the fact that the radial clamping force at the position of the milling cutter 42 disappears after the milling cutter 42 jumps a cutter, the sliding block 32 is arranged at the bottom of the detection wheel 33, and the copper pipe 01 can be pushed to move along the length direction of the copper pipe 01 when being bent, as shown in fig. 6, at the moment, the clamping function of the two detection wheels 33 on the copper pipe 01 can disappear, the bendable section of the copper pipe 01 is longer, and the problem of 'extra strength' is not easy to occur between the copper pipe 01 and the milling cutter 42; if a common fixed rotating wheel is adopted, the rotating wheel can still keep clamping the copper pipe 01 after the milling cutter 42 jumps, at the moment, the variability section of the copper pipe 01 is very small, the bending radian of the copper pipe 01 at the milling cutter 42 is very large, the copper pipe 01 is easy to interfere with the milling cutter 42 to be 'extra-strong', and the danger degree is obviously increased.

And then, as the turntable 41 rotates with the three milling cutters 42, the copper pipe 01 rotates along the bending direction of the copper pipe 01, as shown in fig. 13, the copper pipe 01 further pushes the sliding block 32 to reciprocate, whether the cutter is jumped or not can be judged by analyzing the movement condition of the detection wheel 33 through the movement of the detection wheel 34, the machine halt alarm is carried out after the cutter is jumped, the jumping copper pipe 01 is prevented from further damaging other milling cutters 42 and the main shaft 43 of the milling cutter 42, the self-detection of the copper pipe 01 surface milling device is realized, the working state of the copper pipe 01 surface milling device can be monitored in time, and the cost is reduced.

As a preferred embodiment, the milling cutter assembly 4 is located at the middle position between the front positioning piece 5 and the correcting piece 2, the copper pipe 01 is most easily deformed under the stress, when the milling cutter 42 jumps the cutter, the copper pipe 01 jumps the maximum, and the detecting assembly 3 can monitor the motion state of the milling cutter 42 and the jumping condition of the copper pipe 01 more easily, so that the abnormal condition can be found in time, and the main shaft 43 of the milling cutter 42 is protected from further damaging the device. At the same time, the detecting component 3 should be as close to the milling cutter component 4 as possible, so that the bending degree of the copper pipe 01 at the detecting component 3 is increased as much as possible, and the detection is facilitated.

In this embodiment, two slide carriages 31 are provided, the detecting assembly 3 further includes a box body 36 with an opening at the top, and a guide rail 361 and a screw rod 37 perpendicular to the length direction of the copper pipe are provided on the bottom wall of the box body 36; the bottom of the sliding seat 31 is provided with a guide block 321, the guide block 321 horizontally slides on the guide rail 361, the screw rod 37 penetrates through the two sliding seats 31, and the screw rod 37 is rotated to enable the two sliding seats 31 to be close to or far away from each other, so that the distance between the two sliding seats 31 is adjusted. Specifically, in this embodiment, the number of the guide rails 361 is two, the two guide rails 361 are arranged in parallel and are greater than the lengths of the two sliding seats 31, two guide blocks 321 are arranged at the bottom of each sliding seat 31, one side of each guide block 321 is fixed with each sliding seat 31, the other side of each guide block is in sliding fit with each guide rail 361, and the two sliding seats 31 are close to or far away from each other by rotating the screw rod 37, so that the distance between the two sliding seats 31 is adjusted, the distance between the detection wheels 33 is changed, and the device is suitable for the pipe diameters of copper pipes 01 with different sizes and has a wider application range.

The guide 361 is one of a combination of a ball guide, a linear guide, and a cylindrical guide. A ball guide rail can be adopted, a ball groove is formed in the guide rail, the guide block 321 is provided with corresponding balls, the sliding of the guide block 321 on the guide rail 361 is realized through the sliding of the balls on the ball groove, and the ball guide rail can provide higher precision and stability; the linear guide rail and the sliding block 32 can also be adopted, the guide rail 361 adopts a smooth surface, and the sliding block 32 realizes the sliding on the linear guide rail through special design and material selection; cylindrical guide rail combinations may also be employed: the guide rail adopts a cylindrical shape, and the guide block 321 is provided with corresponding grooves or balls, so that the guide block 321 can freely slide on the cylindrical guide rail.

Wherein, the end of the screw rod 37 is provided with a rotating wheel 371, and the rotating wheel 371 is provided with anti-skid patterns 371a. Through rotatory lead screw 37, rotate the wheel 371 and can be close to or keep away from two slide 31 each other to adjust the distance between two slide 31, this kind of design can conveniently carry out fine setting and the regulation of distance, with the copper pipe 01 of adaptation different sizes and requirement, rotate the design of wheel 371 and make operating personnel can accomplish the regulation of distance through manual rotatory lead screw 37, need not complicated equipment or instrument, this makes the operation simpler and convenient, has improved the ease of use and the efficiency of device.

As a preferable example of the above embodiment, the elastic member 35 is a spring; each slide 31 is provided with a guide rod 351, and the guide rod 351 passes through the corresponding slide block 32; the spring is sleeved on the guide rod 351. The spring can provide proper pressure and resilience force as the elastic piece 35, when copper pipe 01 beats, with keeping the stable position of slider 32 in copper pipe 01 length direction, guide bar 351 is through passing slider 32 and being parallel to copper pipe 01 length direction setting for slider 32 is along guide bar 351 length direction motion, ensure the stability and the accuracy of detection wheel 33, give the biasing force after the trampoline, radial clamping force disappearance of milling cutter 42 leads to copper pipe 01 to beat, detection wheel 33 is when copper pipe 01 beats, move to suitable position along guide bar 351, make the guide wheel of copper pipe 01 both sides produce the skew along copper pipe 01 length direction, judge whether trampoline through the offset.

In the present embodiment, in each single-sided assembly, the slider 32 is provided with a travel amplifier 38 on the side facing away from the copper tube 01, and the travel amplifier 38 is connected to the sensor 34 by a connection 39. The small displacement variations measured by the sensor 34 are amplified to provide more accurate data feedback and control signals, the movement of the slider 32 will change as the milling operation proceeds, the sensor 34 is able to detect these changes and convert them into electrical signals, however, due to the possible noise or other interference factors during milling, the signal obtained by the sensor 34 may be small and unstable, the small displacement measured by the sensor 34 may be amplified by introducing the stroke amplifier 38, so that the signal is easier to detect and process, so that the device can monitor the variations of the surface of the copper tube 01 more accurately and adjust and control as needed, improving the sensitivity and reliability of the detection assembly 3, and increasing the applicability and accuracy of the device.

Wherein, the stroke amplifier 38 is equipped with inside major diameter jar 381, major diameter jar 381 is equipped with inside major piston 382, major piston 382 links to each other with slider 32, and the connecting piece 39 is equipped with inside minor diameter jar 391, and minor diameter jar 391 is equipped with inside minor piston 392, and minor piston 392 is connected with sensor 34, and the diameter of major diameter jar 381 is greater than the diameter of minor diameter jar 391, and major diameter jar 381 and minor diameter jar 391 communicate. The sensor 34 is a displacement monitor, when the sliding block 32 slightly displaces, the large piston 382 moves along with the displacement monitor, corresponding force is generated, when the large piston 382 moves, the displacement of the small piston 392 is amplified, and the displacement is transmitted to the small piston 392 through the connecting piece 39. In this way, a larger displacement amount can be provided, so that the sensor 34 can acquire more accurate displacement data, the sensitivity and accuracy of detection are increased, and the surface change of the copper pipe 01 can be monitored and controlled more accurately, so that higher-quality milling operation is realized.

As a preferable example of the above embodiment, the connecting member 39 is provided with an oil filling port 393, and both ends of the oil filling port 393 are respectively communicated with the outside and the small diameter cylinder 391. The arrangement of the oil filling port 393 facilitates the maintenance and the service of the device. The operator can add and release hydraulic oil in time through the oil filling port 393. During installation, hydraulic oil is filled into the oil filling port 393, and then one end of the oil filling port 393 facing the outside is plugged by an oil plug.

The invention also includes a detection method of the self-checking copper pipe surface milling device, as shown in fig. 15, comprising the following steps:

s10, setting an average threshold ave0 and a standard deviation threshold sigma 0; by setting an average threshold ave0, it can be determined whether the data meets the expected average. If the data exceeds or falls below the average threshold ave0, it may be indicated that there is a deviation from the normal range for the data; the standard deviation threshold sigma 0 is an index for measuring the degree of data dispersion, and by setting the standard deviation threshold sigma 0, the degree of variation of the data can be judged, and if the standard deviation of the data exceeds the set threshold, the variability of the data may be larger, and the data may be unstable or inconsistent.

S20, reading two sensors 34 at intervals t, respectively, and respectively marking as: x1, xf, recording Δ= x1-Xf each time the readings are taken, calculating the difference Δ between the readings of the two sensors 34 to obtain the displacement of the slider 32 in each time interval t, which can reflect the movement condition of the slider 32, analyzing the position difference of the two side sliders 32 as the basis for the subsequent main judgment, for example, the position difference of the two sensors 34 on the two sides of the copper pipe 01, and judging whether the working state of the equipment is normal or not and whether the corresponding adjustment or maintenance is required or not by monitoring the movement condition of the slider 32;

s30, after n times of reading, starting calculation: average ave n and standard deviation σn of Δn-9, Δn-8 … … Δn; to reflect the movement of the slider 32 and the frequency of movement;

for example:

after 10 reads, the calculation was started:

the mean ave10 and standard deviation sigma 10 of Δ1, Δ2 … … Δ10;

after 11 reads, the calculation was started:

average ave11 and standard deviation σ11 of Δ2, Δ3 … … Δ11;

after 12 reads, the calculation was started:

average ave12 and standard deviation σ12 of Δ3, Δ4 … … Δ12;

……

the calculation method can effectively reflect the movement condition and the movement frequency of the two sliding blocks 32, thereby indirectly reflecting the jumping condition of the copper pipe 01 and deducing whether the tool is jumped or not, in particular,

after n readings, information about the frequency of movement of the slider 32 can be provided by calculating the mean ave n and standard deviation σn of the differences, the mean being able to reflect the average amount of movement of the slider 32, and the standard deviation being indicative of the degree of variation in the amount of movement of the slider 32, by analyzing these statistical indicators, the frequency of movement of the slider 32, i.e., the number of times or frequency of movement of the slider 32 within a given time interval, can be estimated. According to the evaluation result of the movement frequency, the working condition of the equipment and whether corresponding optimization or adjustment is needed or not can be judged.

Meanwhile, when new data are obtained each time, the calculation method eliminates the data farthest from the current detection, counts the data into the data and continuously updates the data, and therefore eliminates data noise.

S40: after each calculation, comparing the average ave n and the standard deviation sigma n with an average threshold ave0 and a standard deviation threshold sigma 0 to determine whether the average ave n and the standard deviation sigma 0 are within a preset range, if so, working normally, and if not, stopping for alarming. The condition of no indicates that when one or both of the average ave n and the standard deviation sigma n are not in a preset range, the machine is stopped for alarming, automatic detection is performed while processing the copper pipe 01, abnormal conditions can be found in time, and the milling cutter 42 and the main shaft 43 are protected from further damaging the device.

Through the data analysis and evaluation, the movement condition, the movement frequency and the working state of the sliding block can be monitored, so that problems can be found in time and appropriate measures can be taken, the performance and the reliability of equipment are improved, and the accuracy and the safety of related operations are ensured.

As a preferred embodiment of the above embodiment, the calculation model of the interval t is: t=n×30/N;

wherein n is the rotation speed of the milling cutter 42 along the copper pipe 01, the unit is r/min, t is the time interval between two readings, and the unit is s; n is a positive odd number.

The appropriate time interval t helps to accurately capture changes in the movement of the slider 32 and avoid information loss or duplication due to excessively frequent or insufficient readings. In the invention, the copper pipe 01 generates jumping rotation as shown in fig. 13 due to the combined action of one milling cutter 42 jumping knife to bend the copper pipe 01 and the turntable 41 to drive the three milling cutters 42 to rotate, and each side of the sliding block 32 reciprocates once every turn of the turntable 41, and the movement directions of the sliding blocks 32 at two sides are opposite; if the time interval t is not selected well, resulting in the copper tube 01 being in nearly the upwardly bent condition shown in fig. 13 for each reading, the readings from the sensor 34 will be similar and the amount of information that can be analyzed will be greatly reduced. The method can determine a reasonable time interval t according to the rotation speed of the milling cutter 42 through a calculation model, so that when data are continuously read, the difference of bending directions of the copper tubes 01 is ensured when adjacent readings are taken, and by way of example in fig. 13 and 14, the copper tube 01 is positioned at the position of bending upwards in fig. 13 (namely, the copper tube 01 is deflected leftwards in fig. 14) when the copper tube 01 is read for the 1 st time, the copper tube 01 is positioned at the position of bending downwards in fig. 13 (namely, the copper tube 01 is deflected rightwards in fig. 14) when the copper tube 01 is read for the 2 nd time, the copper tube 01 is positioned at the position of bending upwards in fig. 13 (namely, the copper tube 01 is deflected leftwards in fig. 14) when the copper tube 01 is read for the 3 rd time, and so on, so that the two adjacent readings of the sensor 34 generate obvious difference, and the collected data can reflect the movement condition of the copper tube 01 more.

The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a self-checking formula copper pipe mills a device which characterized in that includes: a rear positioning piece, a correcting piece, a detecting component, a milling cutter component and a front positioning piece are sequentially arranged along the feeding direction of the copper pipe;

the rear positioning piece and the front positioning piece comprise positioning wheels positioned at two sides of the copper pipe and are respectively used for clamping and positioning the copper pipe at the inlet and the outlet of the device;

the correcting piece is used for preliminary correction of the copper pipe;

the milling cutter assembly includes: the copper pipe milling device comprises a turntable and milling cutters, wherein at least three milling cutters are circumferentially distributed on the turntable on the copper pipe, a main shaft is arranged between the milling cutters and the turntable, the milling cutters rotate along the axis of the main shaft, and meanwhile, the turntable drives the milling cutters and the main shaft to rotate for milling the outer surface of the copper pipe;

the detection assembly comprises a sliding seat and two single-side assemblies respectively arranged at two sides of the copper pipe, and each single-side assembly comprises a sliding block, a detection wheel and a sensor; the two sliding blocks are arranged on the sliding seat, each detection wheel is arranged on the corresponding sliding block, and elastic pieces are further arranged on two sides of the sliding block along the length direction of the copper pipe; the two detection wheels are tightly attached to two sides of the copper pipe, each sliding block drives the corresponding detection wheel to move along the length direction of the copper pipe, and each sensor is used for detecting the displacement of the corresponding sliding block in the length direction of the copper pipe.

2. A self-test copper tube face milling apparatus as recited in claim 1, wherein the milling cutter assembly is located at an intermediate location between the front locating piece and the correcting piece.

3. The self-checking copper pipe face milling device according to claim 1, wherein two sliding seats are arranged, the detecting assembly further comprises a box body with an opening at the top, and a guide rail and a screw rod which are perpendicular to the length direction of the copper pipe are arranged on the bottom wall of the box body; the guide block is arranged at the bottom of the sliding seat and is in translational sliding on the guide rail, the screw rod penetrates through the two sliding seats, and the screw rod is rotated to enable the two sliding seats to be close to or far away from each other, so that the distance between the two sliding seats is adjusted.

4. A self-checking copper pipe face milling device according to claim 3, wherein the screw rod end is provided with a rotating wheel, and the rotating wheel is provided with anti-skid patterns.

5. The self-checking copper tube face milling device according to claim 1, wherein the elastic member is a spring; each sliding seat is provided with a guide rod, and the guide rods penetrate through the corresponding sliding blocks; the spring is sleeved on the guide rod.

6. A self-checking copper tube face milling device according to claim 1, wherein in each of the single-sided modules, the side of the slider remote from the copper tube is provided with a travel amplifier, which is connected to the sensor by a connection piece.

7. The self-checking copper pipe face milling device according to claim 6, wherein a large-diameter cylinder is arranged in the stroke amplifier, a large piston is arranged in the large-diameter cylinder and connected with the sliding block, a small-diameter cylinder is arranged in the connecting piece, a small piston is arranged in the small-diameter cylinder and connected with the sensor, the diameter of the large-diameter cylinder is larger than that of the small-diameter cylinder, and the large-diameter cylinder is communicated with the small-diameter cylinder.

8. The self-checking copper pipe face milling device according to claim 7, wherein the connecting piece is provided with an oil filling port, and two ends of the oil filling port are respectively communicated with the outside and the small-diameter cylinder.

9. A method of detecting a self-checking copper tube face milling device according to any one of claims 1 to 8, comprising:

setting an average threshold ave0 and a standard deviation threshold sigma 0;

two sensor readings are taken at each interval t, respectively: x1, xf, each reading is recorded Δ= x1-Xf;

after n reads, the calculation is started: average ave n and standard deviation σn of Δn-9, Δn-8 … … Δn;

after each calculation, comparing the average ave n and the standard deviation sigma n with an average threshold ave0 and a standard deviation threshold sigma 0 to determine whether the average ave n and the standard deviation sigma 0 are within a preset range, if so, working normally, and if not, stopping for alarming.

10. The method for detecting a self-checking copper pipe face milling device according to claim 9, wherein the calculation model of the interval t is: t=n×30/N;

n is the rotation speed of the milling cutter along the copper pipe, the unit is r/min, t is the time interval between two readings, and the unit is s; n is a positive odd number.