CN112461392B

CN112461392B - Progressive manufacturing method of coaxial thermocouple transient heat flow sensor

Info

Publication number: CN112461392B
Application number: CN202011411996.7A
Authority: CN
Inventors: 韩桂来; 姜宗林
Original assignee: Institute of Mechanics of CAS
Current assignee: Institute of Mechanics of CAS
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-08-17
Anticipated expiration: 2040-12-04
Also published as: CN112461392A

Abstract

The invention discloses a progressive manufacturing method of a coaxial thermocouple transient heat flow sensor, which comprises the steps of carrying out progressive stretching on a sensor tubular shell to increase the aperture of the sensor tubular shell, penetrating a sensor wire core with corresponding length into a hole of the sensor tubular shell in a stretched state, shrinking the hole wall of the sensor tubular shell to be attached to the sensor wire core after the stretched state of the sensor tubular shell is released, and cutting the sensor tubular shell with the hole wall attached to the sensor wire core into a plurality of small sections of sensor broods in sections with any required length. The invention ensures the aperture of each section of the stretched sensor tubular shell to be consistent by gradually stretching the sensor tubular shell so as to ensure the successful penetration of the sensor wire core and ensure that the hole wall of each section of the stretched sensor tubular shell can be well attached to the penetrated sensor wire core after the deformation of the sensor tubular shell is recovered, and the aim of greatly improving the transient heat flow sensor of the coaxial thermocouple is achieved by combining a sectional cutting process.

Description

Progressive manufacturing method of coaxial thermocouple transient heat flow sensor

Technical Field

The invention relates to the technical field of heat flow sensor processing, in particular to a progressive manufacturing method of a coaxial thermocouple transient heat flow sensor.

Background

The coaxial thermocouple transient heat flow sensor is an experimental component which utilizes the Seebeck effect of different electrode materials to form electromotive force under the action of different temperature gradients and measure the electromotive force so as to invert the temperature and the heat flow, is mainly used for aerospace hypersonic aircraft pneumatic experiments, hypersonic flow related experiments and the like, and has the characteristics of fast response, large measuring range, high precision, strong robustness and the like.

At present, when a coaxial thermocouple transient heat flow sensor is processed, a sensor wire core needs to be arranged in a sensor tubular shell in a penetrating mode, the sensor tubular shell is attached to the sensor wire core arranged in the penetrating mode in a squeezing mode and the like, and the sensor wire core is fixed.

In the prior art, the sensor tubular shell is attached to the sensor wire core only in a single mode of extruding the sensor tubular shell, and when the sensor tubular shell is used for processing a longer sensor tubular shell, the situation that stress of each section of the sensor tubular shell is uneven exists due to the fact that errors are increased along with the increase of the length of an extruding part, so that the sensor tubular shell is difficult to be fully attached to the sensor wire core.

Therefore, the manufacturing process of rapidly processing the plurality of small-section heat flow sensor prototypes with any lengths and meeting the manufacturing requirements by cutting the long-section heat flow sensor prototypes in a segmented manner cannot be normally realized, so that the improvement of the processing efficiency of the coaxial thermocouple transient heat flow sensor is limited.

Disclosure of Invention

The invention aims to provide a progressive manufacturing method of a coaxial thermocouple transient heat flow sensor, which aims to solve the technical problem that the processing efficiency of the coaxial thermocouple transient heat flow sensor is low due to the unreasonable mode of penetrating a sensor wire core into a sensor tubular shell in the prior art.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

the invention provides a progressive manufacturing method of a coaxial thermocouple transient heat flow sensor, which comprises the following steps:

s100, gradually stretching the sensor tubular shell within a material stretching rate to increase the aperture of the sensor tubular shell;

s200, penetrating a sensor wire core which is provided with an insulating layer and has a corresponding length into a hole of the tubular sensor shell in the stretched state;

s300, releasing the stretched state of the sensor tubular shell to recover the deformation of the sensor tubular shell, and shrinking the hole wall of the sensor tubular shell subjected to deformation recovery to be attached to the sensor wire core;

s400, cutting the sensor tubular shell with the hole wall attached to the sensor wire core into a plurality of small sensor parts in any required length in a segmented mode.

As a preferable aspect of the present invention, the method of progressive stretching in S100 includes:

s101, fixing the front end of the sensor tubular shell and stretching the sensor tubular shell to the rear end at a front stretching point;

s102, clamping and fixing the sensor tubular shell at the front end of the sensor tubular shell and the front stretching point to keep the deformation of the sensor tubular shell, arranging a rear stretching point at the front stretching point towards the rear of the sensor tubular shell, and stretching the sensor tubular shell from the rear stretching point to the rear end;

s103, moving the position of the front stretching point to the position of the last rear stretching point, and then clamping and fixing the tubular shell of the sensor at the new position of the front stretching point;

s104, moving the last rear stretching point backwards to form a new rear stretching point, and stretching the sensor tubular shell to the rear end at the position of the new rear stretching point;

s105, repeating S102-S104 until the sensor tubular shell is fully stretched.

As a preferable aspect of the present invention, the magnitude of the clamping force at each of the front stretching point positions is gradually increased during each stretching of the sensor tubular case.

As a preferable aspect of the present invention, the S300 further includes detecting a resistance of the sensor wire core after the sensor wire core is attached to the sensor tubular shell to determine whether the insulating layer on the surface of the sensor wire core is damaged.

As a preferable aspect of the present invention, the method for determining whether or not the insulating layer on the surface of the sensor wire core is damaged includes:

setting the length of a sensor wire core as L, measuring resistance as R, and the resistance per unit length of the sensor wire core as R, wherein L is R/R;

when the length L of the sensor wire core is 0.5, judging that the insulating layer on the surface of the sensor wire core is not damaged;

and judging that the insulating layer on the surface of the sensor wire core is damaged when L is less than 0.5 or L is more than 0.5.

As a preferable aspect of the present invention, the S400 includes:

s401, dividing the sensor tubular shell with the sensor wire core into multiple sections with equal length;

s402, arranging a plurality of sections of the sensor tubular shells side by side and aligning the end parts of at least one end of the plurality of sections of the sensor tubular shells;

s403, cutting the multiple side-by-side sections of the sensor tubular shell to form a plurality of heat flow sensor hatches;

as a preferable aspect of the present invention, the S402 includes:

s4021, laterally limiting multiple sections of the parallel sensor tubular shells to form a whole to be divided, wherein the multiple sections of the sensor tubular shells are parallel to each other;

s4022, arranging obstacle planes perpendicular to the axes of the multiple sections of the sensor tubular shells in the direction right opposite to the end of the integral to be divided;

s4023, adjusting the posture of the whole to be segmented to incline downwards towards one end of the obstacle plane so that the whole to be segmented slides to the obstacle plane;

s4024, the obstacle plane intercepts the whole body to be segmented so that the downward ends of the multiple sections of the sensor tubular shells in the whole body to be segmented are aligned with the obstacle plane.

As a preferable aspect of the present invention, the S403 includes:

s4031, cutting the multiple sections of the sensor tubular shells section by section from one aligned end of the multiple sections of the sensor tubular shells to the other aligned end;

s4032, transferring the heat flow sensor hatchlings which are separated in the cutting process and are positioned at the same section;

s4033, and repeating S4024, S4031, and S4032 in sequence until the whole to be segmented is completely segmented.

As a preferred aspect of the present invention, the S4031 includes adjusting the distance between the cutting path and the barrier plane according to the desired length of the thermal flow sensor hatchling before each cut is made.

As a preferable aspect of the present invention, the whole to be divided is cut with a plurality of sets of cutting members that perform the segment-by-segment cutting.

Compared with the prior art, the invention has the following beneficial effects:

the sensor tubular shell is gradually stretched, so that the aperture of each stretched section of the sensor tubular shell can be ensured to be consistent when the sensor tubular shell of a long section is stretched, the sensor wire core is ensured to be successfully penetrated, the hole walls of each section of the sensor tubular shell can be well attached to the penetrated sensor wire core after the deformation of the sensor tubular shell is recovered, and the sensor tubular shell is segmented and cut into a plurality of sensor hatchlings with the sensor tubular shell and the sensor wire core by combining a segmented cutting process, so that the aim of rapidly processing the sensor hatchlings to greatly improve the transient heat flow sensor of the coaxial thermocouple is fulfilled.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

FIG. 1 is a flow chart of an embodiment of the present invention;

FIG. 2 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 3 is a top view of FIG. 1 in accordance with an embodiment of the present invention;

fig. 4 is a schematic view of a ferrule structure according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a reset mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic view of an end seat structure according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a bottom plate structure according to an embodiment of the present invention;

fig. 8 is a schematic view of a telescopic limiting collar structure according to an embodiment of the invention.

The reference numerals in the drawings denote the following, respectively:

1-processing a platform; 2-a sensor tubular housing; 3, clamping; 4-cutting the ferrule; 5-a linear drive mechanism; 6-a clamping driving mechanism; 7-an auxiliary support; 8-a reset mechanism; 9-a toggle mechanism; 10-an annular hole; 11-a telescopic limit ring pipe; 12-a return spring; 13-a microcylinder;

301-a base plate; 302-end seat;

3011-a main board body; 3012-a telescopic plate body; 3013-a jack; 3014-a plug; 3015-pin holes;

401-arc shaped plate; 402-a ball bearing;

701-upright column; 702-a rocker arm; 702-a semicircular supporting plate;

801-a driving ring; 802-torsion spring; 803-U-shaped guide rod; 804-a magnet;

901-a manipulator; 902-a linkage deflector rod; 903-card slot;

1101-open mouth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present invention provides a progressive manufacturing method of a transient heat flow sensor of a coaxial thermocouple, comprising:

s200, penetrating a sensor wire core which has a corresponding length and comprises an insulating layer into a hole of the tubular sensor shell in the stretched state;

When the sensor tubular shell is stretched, the outer pipe wall and the inner pipe wall approach to each other, namely the pipe wall becomes thinner to adapt to the increase of the length of the sensor tubular shell, so that the aperture of the sensor tubular shell is increased while the sensor tubular shell is elastically deformed. In the process of threading the sensor wire core, the stretched state of the sensor tubular shell is kept until the sensor wire core penetrates through the sensor tubular shell, two ends of the sensor tubular shell are released to remove the stretched state of the sensor tubular shell, so that the deformation of the stretched sensor tubular shell in the material stretching rate is recovered, the aperture of the sensor tubular shell is reduced while the deformation is recovered, and the aperture wall of the sensor tubular shell is attached to the sensor wire core. The tubular shell of the sensor is cut into a plurality of young sensor parts with the tubular shell of the sensor and the sensor wire core in a segmenting way by combining a segmenting cutting process, so that the purpose of rapidly processing the young sensor parts to greatly improve the production efficiency of the transient heat flow sensor (hereinafter referred to as the heat flow sensor for short) of the coaxial thermocouple is achieved.

It should be noted that the aperture and the total length of the sensor tubular shell after being stretched are set according to the material stretch ratio and the sensor wire core, that is, the initial aperture of the sensor tubular shell is slightly smaller than the wire diameter of the sensor wire core, and the aperture of the sensor tubular shell after being stretched within the material stretch ratio is slightly larger than the wire diameter of the sensor wire core.

Preferably, the outer diameter of the sensor tubular shell meets the requirement D of the sensor external dimension (0.92-1.02) D0. Where D0 represents the heat flow sensor design aspect diameter and D represents the outer diameter of the sensor tubular shell after it has been stretched.

The method of progressive stretching in S100 includes:

s102, clamping and fixing the tubular sensor shell at the front end and the front stretching point of the tubular sensor shell to keep the deformation of the tubular sensor shell, arranging a rear stretching point at the front stretching point towards the rear of the tubular sensor shell, and stretching the tubular sensor shell to the rear end from the rear stretching point;

s103, moving the position of the front stretching point to the position of the last rear stretching point, and clamping and fixing the sensor tubular shell at the new position of the front stretching point;

s105, repeating S102-S104 until the sensor tubular shell is fully stretched.

Through gradual segmentation stretching, and carry out spacing fixed in order to prevent that deformation from resumeing to the stretched part of sensor tubulose shell, avoided the direct tensile condition that leads to the tensile degree of each section of sensor tubulose shell to long section's sensor tubulose shell, thereby avoid the aperture of each section of sensor tubulose shell to differ and lead to the sensor silk core to wear to establish the condition of hindering and take place.

In addition, in order to accommodate the reduction of the outer diameter of the sensor tubular shell when the sensor tubular shell is stretched, the magnitude of the clamping force at each front stretching point is gradually increased in the process of each time the sensor tubular shell is stretched, so that the force conduction between the stretching part and the stretched part caused by the reduction of the outer diameter of the sensor tubular shell at the front stretching point is avoided, and the stretched part is prevented from being repeatedly stretched.

S300, detecting the resistance of the sensor wire core after the sensor wire core is attached to the sensor tubular shell so as to judge whether the insulating layer on the surface of the sensor wire core is damaged.

The method for judging whether the insulating layer on the surface of the sensor wire core is damaged or not comprises the following steps:

when the sensor wire core length L is 0.5 (measurement resistance R/sensor wire core unit length resistance R), the insulating layer on the surface of the sensor wire core is determined not to be damaged;

and when L is less than 0.5(R/R) or L is more than 0.5(R/R), judging that the insulating layer on the surface of the sensor wire core is damaged.

S400 includes:

s401, dividing a sensor tubular shell which is penetrated by a sensor wire core into a plurality of sections with equal length;

s402, arranging the multiple sections of sensor tubular shells side by side and aligning the end parts of at least one end of the multiple sections of sensor tubular shells;

s403, cutting the side-by-side multi-section sensor tubular shells to form a plurality of heat flow sensor broods;

the multistage sensor tubular shell is arranged and aligned with the end part, and then is cut in a segmented mode according to the required length, so that a plurality of rudiments of the heat flow sensor are processed quickly, and the processing efficiency of the heat flow sensor is improved greatly.

S402 comprises the following steps:

s4021, laterally limiting the multiple sections of parallel sensor tubular shells to form a whole to be divided, wherein the multiple sections of sensor tubular shells are parallel to each other;

and preferably, S4022, arranging barrier planes perpendicular to the axes of the multi-section sensor tubular shells in the direction right opposite to the end of the whole to be divided;

s4023, adjusting the posture of the whole body to be segmented to incline downwards towards one end of the obstacle plane so that the whole body to be segmented slides to the obstacle plane;

s4024, stopping the whole body to be segmented by the barrier plane so as to align the downward ends of the multiple sections of the sensor tubular shells in the whole body to be segmented by the barrier plane.

Specifically, the multi-segment sensor tubular shells are arranged side by side on the tiltable platform, the multi-segment sensor tubular shells are attached to each other by clamping two sides of the whole to be divided, and the two sides of the whole to be divided are limited, so that the aim of keeping the multi-segment sensor tubular shells parallel to each other is fulfilled. Or each sensor tubular shell is limited so as to keep the plurality of sections of sensor tubular shells parallel to each other, and the specific implementation mode is selected according to actual processing conditions.

And then, driving the platform, adjusting the platform to be inclined downwards towards one end of the obstacle plane, so that the whole body to be divided slides to the obstacle plane along the surface of the platform under the action of body gravity. The barrier plane is a baffle plate and other parts with the same function arranged at the lower end of the platform, taking the baffle plate as an example, the surface of the baffle plate facing the whole body to be divided is vertical to the axis of the multi-section sensor tubular shell to be divided, so that the end parts of the multi-section sensor tubular shell to be divided are aligned by the baffle plate after the whole body to be divided is stopped by the baffle plate.

S403 comprises:

s4031, cutting the multi-section sensor tubular shell section by section from one end of the multi-section sensor tubular shell aligned with each other to the other end;

s4032, transferring the separated heat flow sensor young parts positioned at the same section in the cutting process;

and S4033, repeating S4024, S4031 and S4032 in sequence until the whole to be segmented is segmented.

The cutting path for cutting the whole to be cut with the flat end part is parallel to the baffle, and the distance between the cutting path and the baffle is set according to the heat flow sensor with the required length, so that a plurality of heat flow sensor rudiments with the same length are cut by the cutting part moving along the cutting path in the whole to be cut. And the plurality of divided heat flow sensor prototypes are transferred in a manner of transferring by a mechanical arm and the like, and the plurality of sections of the sensor tubular shells in the whole to be cut which is inclined slide towards the baffle again due to the loss of the support of the corresponding heat flow sensor prototypes, so that one end of the plurality of sections of the sensor tubular shells in the whole to be divided is aligned by the baffle again until the whole to be divided is divided.

The whole to be segmented is inclined and cut segment by segment, so that automatic feeding of the segmented cutting process is realized, and the automatic feeding mode is simple and reliable.

In an actual production process, a situation that a plurality of lengths of the heat flow sensor prototypes are divided from the same to-be-divided whole body may be required, and in order to adapt to the situation, S4031 includes adjusting the distance between the cutting line and the barrier plane according to the required length of each heat flow sensor prototype before each section is cut, so as to adjust the length of each divided heat flow sensor prototype.

In addition, in order to improve the cutting efficiency of the whole belt cutting with more sensor tubular shells, at least two groups of cutting components for cutting section by section are arranged. For example, while the first set of cutting members cuts in a first cutting path, the second set of cutting members cuts in a second path the multi-segment sensor tubular casing with its ends re-aligned, thereby further improving cutting efficiency.

And when a plurality of heat flow sensor rudiments with different lengths are required to be cut on the same to-be-cut whole, the whole to-be-cut is cut by the two groups of cutting parts from the same side to the other side all the time, and the distances between the first cutting path and the baffle plate and the second cutting path are different, so that the heat flow sensor rudiments with different lengths are simultaneously cut on the same to-be-cut whole, and the processing efficiency of the heat flow sensor rudiments with two adjacent sections required to be cut and with different lengths is greatly improved.

As shown in fig. 2 to 8, based on the above method, the present invention further provides a progressive processing and manufacturing apparatus for a transient heat flow sensor of a coaxial thermocouple, including a processing platform 1, a fixture 3 for fixing a tubular sensor housing 2, a cutting sleeve 4 for pressing the tubular sensor housing 2 on the fixture 3 and through which a wire core passes, and a linear driving mechanism 5 for driving the tubular sensor housing 2 and the cutting sleeve 4 to move relatively so that the tubular sensor housing 2 fits with the wire core under the pressing of the cutting sleeve 4.

After the clamp 3 fixes the sensor tubular shell 2 and the cutting ferrule 4 extrudes the sensor tubular shell 2 with the threaded core, the linear driving mechanism 5 drives the clamp 3 and the sensor tubular shell 2 to perform linear motion, the sensor tubular shell 2 is extruded from one end to the other end by the clamping ferrule 4 in the motion process, so that the hole wall of the sensor tubular shell 2 is fully attached to the threaded core arranged in the hole, and a prototype of a coaxial thermocouple transient heat flow sensor (hereinafter referred to as a heat flow sensor) is formed.

And, because the cutting ferrule 4 is fixed and the sensor tubular shell 2 is driven to extrude the sensor tubular shell 2 in a mode of penetrating through the cutting ferrule 4, each section of the sensor tubular shell 2 is extruded by the cutting ferrule 4 and the extrusion force of the cutting ferrule 4 on each section is consistent, each extruded section of the sensor tubular shell 2 can be fully attached to the wire core, and the long heat flow sensor prototype can be processed stably with high quality.

The longer prototype of the heat flow sensor has the advantages that the prototype of the heat flow sensor can be cut into different lengths according to parameter requirements through a segmentation cutting process, and the frequency of dismounting and extruding the sensor tubular shell 2 can be greatly reduced on the premise of processing the heat flow sensors with the same number, so that the processing efficiency of the heat flow sensor is greatly improved.

Wherein, the sensor tubular shell 2 is installed on the linear driving mechanism 5 through the clamp 3, the clamp 3 comprises a bottom plate 301 which is installed on the linear driving mechanism 5 and is driven by the linear driving mechanism 5 to move, and a pair of end seats 302 which are installed on the bottom plate 301 and are arranged in a positive opposition way, and two ends of the sensor tubular shell 2 are installed on the corresponding end seats 302.

The linear driving mechanism 5 is any one of a rodless cylinder and an electric rail having a function of driving an object to perform linear motion.

The bottom plate 301 drives the sensor tubular shell 2 to pass through the cutting ferrule 4 through a pair of end bases 301 connected with the end part of the sensor tubular shell 2 under the driving of the linear driving mechanism 5, the pair of end bases 301 are limited or fixed on the sensor tubular shell 2 between the two in modes of bonding, welding, clamping and the like, negative effects caused by extruding the two ends of the sensor tubular shell 2 by the cutting ferrule 4 are avoided, and the hole walls at the two ends of the sensor tubular shell 2 are favorably attached to the two ends of the corresponding wire core after being extruded by the cutting ferrule 4.

Preferably, the cutting ferrule 4 is arranged on both sides of the bottom plate 301, the cutting ferrules 4 on both sides are mounted on the processing platform 1 through the clamping driving mechanism 6, and the sensor tubular shell 2 is extruded by a pair of cutting ferrules 4 driven by the clamping driving mechanism 6 to be close to each other and is attached to the threaded core.

The clamping sleeve 4 which drives the two sides through the clamping driving mechanism 6 is close to each other to extrude the sensor tubular shell 2 on the clamp, on one hand, the clamping driving mechanism 6 is convenient to adjust and detect the extrusion pressure of the sensor tubular shell 2, and the phenomenon that the insulating layer on the surface of the wire core is damaged or even the wire core is broken due to the fact that the wire core is excessively extruded by the sensor tubular shell 2 is avoided. On the other hand, the driving of centre gripping actuating mechanism 6 divides and shuts down under the cutting ferrule 4 of both sides, the sensor tubulose shell 2 of being convenient for install to cutting ferrule 4 on and drive from cutting ferrule 4, and in sensor tubulose shell 2 need not to penetrate cutting ferrule 4 by the one end of cutting ferrule 4, be favorable to reducing the demand and the occupation of 2 dismouting processes of sensor tubulose shell to processing space.

The clamping driving mechanism 6 is any one of a cylinder, an electric push rod and the like with a reciprocating push-pull function on an object.

Wherein, cutting ferrule 4 includes arc 401 and embedding and roll installation at arc 401 centripetal side's a plurality of balls 402, arc 401 contacts with sensor tubular shell 2 through a plurality of balls 402, being provided with of ball 402 does benefit to and reduces the frictional force that carries out relative motion between arc 402 and the sensor tubular shell 2, thereby reduce the wearing and tearing of arc 401 and sensor tubular shell 2, and reduced the heat production of friction greatly and the clearance that ball 402 formed is favorable to the heat dissipation, thereby avoid carrying out the in-process of long distance relative motion because of sensor tubular shell 2 and arc 402, sensor tubular shell 2 leads to its pore wall internal expansion excessively to cause the condition emergence of excessive extrusion of silk core because of the high temperature.

It should be noted that the radius of the circle corresponding to the radial section of the arc plate 401 is smaller than the radius of the circle corresponding to the radial section of the sensor tubular shell 2, that is, the two vertical ends of the arc plate 401 driven to move horizontally contact with the inclined upper part and the inclined lower part of the sensor tubular shell 2 preferentially. And as the clamping driving mechanism 6 continues to drive the arc plate 401 to press the sensor tubular housing 2, the two ends of the arc plate 401 continue to press toward the corresponding upper and lower portions of the sensor tubular housing 2 along the surface of the sensor tubular housing 2 due to the "shrinking" of the pressed portion of the sensor tubular housing 2. And after the arc 401 is attached to the surface of the sensor tubular shell 2 due to the deformation of the arc 401 or/and the sensor tubular shell 2, the two ends of the arc 401 prevent the vertical deformation of the sensor tubular shell 2, and meanwhile, the two sides of the sensor tubular shell 2 are oppositely extruded by the arc 401 under the driving of the clamping driving mechanism 6, and then the sensor tubular shell 2 attached to the two sides of the arc 401 and extruded by the arc 401 is driven to move linearly, so that each section of the sensor tubular shell 2 is extruded by the arc 401 at the two sides.

It should be noted that the arc length corresponding to the centripetal side of the radial cross section of the arc plate 401 is smaller than 1/2 of the circumference of the circle corresponding to the radial cross section of the sensor tubular shell 2, so as to avoid the situation that the two ends of the arc plates 401 on the two sides cannot extrude the two sides of the sensor tubular shell 2 in opposite directions due to the abutting of the arc plates 401 before the sensor tubular shell 2 is attached, and the arc length of the centripetal side of the arc plate 401 should be smaller than or equal to 1/2 of the circumference of the cross section of the target sensor tubular shell 2 after the target sensor tubular shell 2 is extruded, so as to ensure that the sensor tubular shell 2 is extruded by the arc plates 401 on the two sides into the target sensor tubular shell 2 which can be fully attached to the filament core.

Because the processed sensor tubular shell 2 of the heat flow sensor is thin, if the two ends of the sensor tubular shell 2 are supported and fixed only by the end seat 302, when the length of the sensor tubular shell 2 is long, the middle part of the sensor tubular shell 2 is easy to bend under the action of self gravity, so that the sensor tubular shell 2 shakes and is broken due to uneven stress when passing through the arc-shaped plates 401 at the two sides, and the invention further provides the following embodiments aiming at the problems:

the equal interval in both sides of bottom plate 301 is installed a plurality of auxiliary stay portions 7 that are located between both ends end base 302, auxiliary stay portion 7 includes that the bottom is installed the stand 701 on bottom plate 301 perpendicularly, the top that processing platform 1 was kept away from to stand 701 is rotated and is installed rocking arm 702, rocking arm 702 has semicircle layer board 703 for the inner end fixed mounting of stand 701, through rotating to normal relative both sides semicircle layer board 703 to surround spacing and auxiliary stay to sensor tubular shell 2, the just relative a plurality of semicircle layer boards 703 in both sides are promoted to rotate and alternate segregation by the reaction force of arc 401 one by one along with the removal of bottom plate 301. And the upright column 701 is provided with a reset mechanism 8, and the reset mechanism is used for driving the semicircular supporting plates 703 at the two sides to reset to a positive opposite state after the cutting sleeve 4 passes through the semicircular supporting plates 703 at the two sides.

The semicircular supporting plates 703 on two sides are all kept in one-to-one correspondence and in a normal opposite initial state under the action of the reset mechanism 8, the semicircular supporting plates 703 on two sides, which are supported on the bottom plate 301 through the upright column 701 and are in a normal opposite state, form a ring shape capable of circumferentially surrounding the sensor tubular shell 2, so that the sensor tubular shell 2 is supported in a multi-point manner and limited in a multi-point manner in two side directions through the auxiliary supporting parts 7 arranged at intervals in the length direction, the sensor tubular shell 2 is prevented from being bent due to self weight, the auxiliary sensor tubular shell 2 is prevented from being straightened, the movement path of the sensor tubular shell 2 and the bottom plate 301 is ensured to be parallel, and the situations of bending and resistance increase in the process of passing through the arc plates 401 on two sides due to the deflection of the sensor tubular shell 2 are prevented.

When the bottom plate 301 is driven by the linear driving mechanism 5 to enable the sensor tubular shell 2 to gradually pass through the arc plates 401 on the two sides, the pairs of half-circle supporting plates 703 on the bottom plate 301 are sequentially contacted with the arc plates 401 and driven by the reaction force of the arc plates 401 to drive the rocker arm 702 to rotate around the upright column 701 together until the arc plates 401 passively pass through the gap between the pair of half-circle supporting plates 703 separated from each other, and then the pair of half-circle supporting plates 703 separated from each other is reset to a state opposite to each other under the driving of the reset mechanism 8, that is, the pair of half-circle supporting plates 703 is changed into a state of surrounding the sensor tubular shell 2 again to support and limit the sensor tubular shell 2 again. In the process, the remaining pairs of semi-circular supporting plates 703 are still in or are reset to the state of surrounding, supporting and limiting the sensor tubular shell 2, that is, the auxiliary supporting parts 7 can support and limit the sensor tubular shell 2 without causing negative effects on extruding the sensor tubular shell 2, and the processing stability of the processing quality of the heat flow sensor is improved.

The reset mechanism 8 comprises a guide ring 801 coaxially sleeved on the upright column 701 in a rotating manner, a torsion spring 802 connecting the guide ring 801 and the upright column 701, and a U-shaped guide rod 803 connecting the guide ring 801 and the rocker arm 702, wherein the outer end of the rocker arm 702 in rotating connection with the upright column 701 is connected with the end part of the U-shaped guide rod 803, and the torsion spring 802 drives the semicircular supporting plate 703 to reset through the guide ring 801, the U-shaped guide rod 803 and the rocker arm 702 in sequence.

When the semicircular supporting plate 703 is pushed by the arc plate 401 to rotate, the semicircular supporting plate 703 sequentially passes through the rocker arm 702, the U-shaped guide rod 803 and the guide ring 801 to carry out torsion force storage on the torsion spring 802, so that after the semicircular supporting plate 703 loses the obstruction of the arc plate 401, the torsion spring 802 sequentially passes through the guide ring 801, the U-shaped guide rod 803 and the rocker arm 702 to drive the semicircular supporting plate 703 to reset.

It is further optimized in the above embodiment that the resetting mechanism 8 further includes a pair of magnets 804, the magnets 804 are mounted on the upright column 701 and the U-shaped guide rod 803, and the magnets 804 on the U-shaped guide rod 803 attract each other with the magnets 804 on the upright column 701 when the semicircular supporting plate 703 reaches the resetting position, so as to facilitate the quick stop of the accurate resetting of the semicircular supporting plate 703.

When the semicircular supporting plate 703 is reset by the torsion spring 802, because of the inertia of each part directly and indirectly connected with the torsion spring 802, the semicircular supporting plate 703 can stop after one end time of the forward and backward swing of the reset position, and in the past, the performance and the service life of the torsion spring 802 can be influenced, so that the reset position of the semicircular supporting plate 703 is inaccurate, and the supporting and limiting effects of the semicircular supporting plate 703 on the sensor tubular shell 2 are influenced.

When the pair of semicircular supporting plates 703 are in a normal-phase opposite state, the magnetic poles of the magnets 804 on the U-shaped guide rod 803 and the magnetic poles of the magnets 804 on the upright column 701 are in a normal-phase opposite state, and the normal-phase opposite magnetic poles are opposite to each other, as can be seen from the common knowledge, the mutual attraction force between the pair of magnets 804 is the largest at this time, so that when the semicircular supporting plates 703 and the U-shaped guide rod 803 reach the reset position, the U-shaped guide rod 803 stops shaking rapidly under the action of the attraction force between the pair of magnets 804, and the stop position of the U-shaped guide rod 803 which normally operates is always the reset position, thereby achieving the purposes of facilitating the precise reset and rapid stop of the semicircular supporting plates 703 connected with the U-shaped guide rod 803, so as to prolong the service life of the torsion spring.

In addition, the two sides of the bottom plate 301 are both provided with the toggle mechanisms 9 which act synchronously, and the plurality of semicircular supporting plates 703 at the two sides are mutually separated under the synchronous driving of the toggle mechanisms 9 at the two sides so as to be used for installing and taking the sensor tubular shell 2.

The toggle mechanism 9 comprises a manipulator 901 mounted on the side wall of the bottom plate 301, and a linkage shift lever 902 mounted on the manipulator 901, the linkage shift lever 902 is provided with a plurality of slots 903 corresponding to the U-shaped guide rods 803 at intervals towards the inner side of the U-shaped guide rods 803, the distance between adjacent slots 903 is the same as the distance between adjacent U-shaped guide rods 803 on the same side, the manipulator 901 drives the linkage shift lever 902 to move towards the reset U-shaped guide rods 803, and the manipulator 901 drives the U-shaped guide rods 803 to rotate until the distance between the semicircular support plates 703 on both sides is greater than the width of the sensor tubular shell 2 after the U-shaped guide rods 803 are passively inserted into the corresponding slots 903.

When the semicircular supporting plates 703 on two sides need to be separated from each other, the manipulator 901 drives the linkage driving rod 902 to move towards the U-shaped guide rod 803 until the outer sides of the U-shaped guide rods 803 are respectively inserted into the corresponding slots 903 on the inner side of the linkage driving rod 902. Subsequently, the manipulators 901 on both sides respectively drive the corresponding linkage shift levers 902 to move towards the sliding direction of the base plate 301 and simultaneously push the corresponding linkage shift levers 902 towards the corresponding U-shaped guide rods 803, so that the movement track of the linkage shift levers 902 is the same as the movement track of the U-shaped guide rods 803 rotating around the upright posts 801 away from the reset position, thereby enabling the U-shaped guide rods 803 on both sides to synchronously rotate under the drive of the linkage shift levers 902, and further enabling the semicircular supporting plates 703 on both sides to be separated from each other, so as to facilitate the placement and taking of the sensor tubular shell 2.

"robot is an automatic manipulator which can imitate some action functions of human hand and arm, and can be used for gripping and carrying article or operating tool according to fixed program. The robot has the characteristics that various expected operations can be completed through programming, and the advantages of the robot and the manipulator are combined in structure and performance. ", the robot 901 in the present embodiment is the prior art disclosed, and a person skilled in the art can implement the functions of the robot 901 in the present embodiment by using the prior art or by simple conversion of the prior art.

Further optimized in the above embodiment is that annular holes 10 are opened at opposite ends of the pair of end bases 302, the annular holes 10 at both ends are coaxial, a telescopic limiting ring pipe 11 for vertically supporting and horizontally limiting the end of the sensor tubular shell 2 is axially and slidably mounted in the annular hole 10, the aperture of the telescopic limiting ring pipe 11 is the same as the outer diameter of the sensor tubular shell 2, a return spring 12 with one fixed end and the other connected with the telescopic limiting ring pipe 11 is mounted in the annular hole 10, and the telescopic limiting ring pipe 11 after contacting the arc-shaped plate 401 is pushed into the annular hole 10 by the reaction force applied by the arc-shaped plate 401 along with the continuous movement of the bottom plate 301 so that the end of the sensor tubular shell 2 is extruded by the arc-shaped plate 401.

After the semicircle supporting plates 703 of a plurality of in both sides are separated from each other, insert corresponding flexible spacing ring pipe 11 respectively with the both ends of sensor tubulose shell 2, support and fix sensor tubulose shell 2 through flexible spacing ring pipe 11, subsequently, a plurality of semicircle supporting plates 703 of both sides are reset under the cooperation of corresponding manipulator 901 and linkage driving lever 802, at this moment, sensor tubulose shell 2 just in time is surrounded and is supported by a plurality of pairs of half round supporting plates 703 (can realize through the debugging with the position of flexible spacing ring pipe 11 to the reset position of a plurality of semicircle supporting plates 703 of both sides), be convenient for pack sensor tubulose shell 2 into in the hole between a plurality of pairs of half round supporting plates 703.

And, the telescopic limit ring pipe 11 can be retracted into the annular hole 10 by the pushing of the reaction force of the arc-shaped plates 401, so that the end of the sensor tubular shell 2 is pressed by the arc-shaped plates 401 at both sides as approaching to the arc-shaped plates 401.

In the above embodiment, it is further optimized that one end of the telescopic limiting ring pipe 11, which is opposite to the return spring 12, is opened with an opening 1101 for installing and taking the sensor tubular shell 2, and the width of the opening 1101 is the same as the diameter of the sensor tubular shell 2.

Because the aperture of flexible spacing ring pipe 11 is the same with the external diameter of sensor tubulose shell 2, when the tip of sensor tubulose shell 2 was placed on flexible spacing ring pipe 11 by uncovered 1101, the bottom of sensor tubulose shell 2 tip and the inner wall of the flexible spacing ring pipe 11 of uncovered 1101 below can fully laminate, thereby prevent that sensor tubulose shell 2 from taking place to rock and shift on flexible spacing ring pipe 11, when making things convenient for the tip of sensor tubulose shell 2 to carry out the complex with flexible spacing ring pipe 11, do not influence the support and the spacing effect of flexible spacing ring pipe 11 to sensor tubulose shell 2.

It is further optimized in the above embodiment that the opposite inner ends of the end bases 302 at the two ends are both provided with a round hole coaxial with the telescopic limiting ring pipe 11, the end bases 302 are internally provided with the micro cylinder 13, the piston rod of the micro cylinder 13 is coaxial with the round hole and is in sliding insertion fit, and the diameter of the piston rod is smaller than the outer diameter of the tubular shell 2 of the sensor.

The miniature cylinder 13 through both ends carries out the centre gripping to the sensor tubulose shell 2 of placing on the spacing ring pipe 11 of flexible at both ends fixedly to realize carrying out the spacing purpose of axial to sensor tubulose shell 2, and the diameter of miniature cylinder 13's piston rod is less than the external diameter of sensor tubulose shell 2, is favorable to arc 401 to carry out abundant extrusion to the tip of sensor tubulose shell 2.

It is further optimized in the above embodiment that the bottom plate 301 includes a main plate 3011 on which the manipulator 901 and each upright column 701 are installed, and a telescopic plate 3012 on which the end seat 302 is installed, the telescopic plates 3012 at both ends are slidably inserted into the end of the main plate 3011, and the telescopic plates 3012 at both ends of the main plate 3011 can be far away from or close to each other to adjust the distance between the end seats 302 at both ends and the telescopic limiting ring pipes 11, so as to adapt to the processing of the sensor tubular shells 2 with different lengths.

In addition, both ends of the main board 3011 are provided with jacks 3013 slidably engaged with the retractable board 3012, one end of the retractable board 3012 inserted into the jack 3013 is fixed to the main board 3011 by pins 3014, the side walls of the main board 3011 and the retractable board 3012 are provided with pin holes 3015 for the pins 3014 to be inserted into the jacks 3013, and the side wall of the retractable board 3012 is provided with a plurality of pin holes 3015 arranged and distributed in the sliding direction of the retractable board 3011, after the position of the retractable board 3012 relative to the main board 3011 is adjusted, the main board 3011 and the retractable board 3012 are fixed by the pins 3014 inserted into the pin holes 3015 on the side walls of the main board 3011 and the retractable board 3012.

It should be added that the embodiment of the present invention preferably uses the linear driving mechanism 5 to drive the clamp 3 to realize the relative movement of the sensor tubular housing 2 and the ferrule 4, so as to reduce the number of driving mechanisms for driving the clamp 3 and the ferrule 4 to perform the relative movement. However, merely to express the relative movement relationship between the clamp 3 and the ferrule 4, it should not be understood as a limitation on the relative movement manner of the clamp 3 and the ferrule 4, i.e. the relative movement of the sensor tubular housing 2 and the ferrule 4 may also be achieved by driving the ferrule 4 to move or simultaneously driving the clamp 3 and the ferrule 4 to move in opposite directions.

In addition, the embodiment of the invention adopts a mode of pushing the sensor tubular shell 2 to move towards the cutting sleeve 4 to enable the sensor tubular shell 2 and the cutting sleeve 4 to move relatively, so as to achieve the purpose of simplifying the structure. However, the end seat 302, the telescopic limit collar 11 and the micro cylinder 13 may be adjusted, for example, the micro cylinder 13 that is pressed at the end near the sensor tubular housing 2 is replaced by an electromagnet, a finger cylinder, or other devices for fixing the end of the sensor tubular housing 2, or the telescopic limit collar 11 is provided with screw holes distributed oppositely, so that the telescopic limit collar 11 fixes the sensor tubular housing 2 in multiple directions by oppositely screwed bolts, so that when the sensor tubular housing 2 moves, the sensor tubular housing 2 is moved similarly to pulling the sensor tubular housing 2, which is more suitable for the case that the sensor tubular housing 2 is bent.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. A progressive manufacturing method of a coaxial thermocouple transient heat flow sensor is characterized by comprising the following steps:

s100, gradually stretching the sensor tubular shell within a material stretching ratio to increase the aperture of the sensor tubular shell, wherein the method for gradually stretching comprises the following steps:

s105, repeating S102-S104 until the sensor tubular shell is completely stretched;

wherein the magnitude of the clamping force at each of the forward tension points increases progressively during each of the sensor tubular housing tensions;

s400, cutting the sensor tubular shell with the hole wall attached to the sensor wire core into a plurality of small sensor parts in any required length in a segmented mode, wherein the specific method comprises the following steps:

s402, arranging the multiple sections of the sensor tubular shells side by side and aligning the end parts of at least one end of the multiple sections of the sensor tubular shells, wherein the specific alignment method comprises the following steps:

s4024, the obstacle plane intercepts the whole to be segmented so that the downward ends of the multiple sections of the sensor tubular shells in the whole to be segmented are aligned with the obstacle plane;

s403, cutting the multiple parallel sections of the sensor tubular shells to form a plurality of heat flow sensor hatchlings, wherein the specific cutting method comprises the following steps:

2. The progressive manufacturing method of a transient heat flow sensor of a coaxial thermocouple according to claim 1, wherein the step S300 further includes detecting a resistance of the sensor wire core after the sensor wire core is attached to the sensor tubular shell to determine whether an insulating layer on a surface of the sensor wire core is damaged.

3. The progressive manufacturing method of a transient heat flow sensor of a coaxial thermocouple according to claim 2, wherein the method for determining whether the insulating layer on the surface of the sensor wire core is damaged comprises the following steps:

4. The method of claim 1, wherein said S4031 comprises adjusting a distance between a cutting path and said barrier plane according to a desired length of said thermal flow sensor preform before each cut is made.

5. The progressive manufacturing method of a transient heat flow sensor of a coaxial thermocouple according to claim 4, wherein the whole to be segmented is cut by a plurality of groups of cutting components for performing the segmentation cutting.