CN115112031A

CN115112031A - Method and equipment for measuring outer diameter and straightness of pipe

Info

Publication number: CN115112031A
Application number: CN202210827398.0A
Authority: CN
Inventors: 余亚强; 闫永杰
Original assignee: Shanghai Shengyan Intelligent Technology Co ltd; Nantong Sanze Precision Ceramics Co ltd
Current assignee: Shanghai Shengyan Intelligent Technology Co ltd; Nantong Sanze Precision Ceramics Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-09-27
Anticipated expiration: 2042-07-14
Also published as: CN115112031B

Abstract

The utility model relates to a tubular product external diameter and straightness accuracy measuring method and measuring equipment, it relates to the tubular product field of measuring, and it includes the workstation, still including setting up slide rail, a plurality of rotating assembly and the range finding subassembly that are used for driving the tubular product rotation on the workstation, a plurality of rotating assembly follows the length direction of slide rail distributes, the range finding subassembly slides and sets up on the slide rail, the one end of slide rail be provided with be used for right the locating plate that the one end of tubular product was fixed a position. This application has automatic feeding and detects, improves detection efficiency, the effect of using manpower sparingly.

Description

Method and equipment for measuring outer diameter and straightness of pipe

Technical Field

The application relates to the field of pipe measurement, in particular to a method and a device for measuring the outer diameter and the straightness of a pipe.

Background

Information such as straightness and roundness of a pipe is an important index for evaluating the appearance quality of the pipe, the straightness reflects the bending degree of the pipe, and the roundness represents the deviation of the interface shape of the pipe from the circular shape, and the appearance size parameters have important influence on the production and use of the pipe, so that a method for accurately measuring the parameters is needed.

At present, when the outer diameter and the roundness of a pipe are measured, a caliper, a micrometer and a caliper auxiliary measuring method are used manually, when the straightness of the pipe is measured, the pipe is placed on a flat platform, the pipe is rolled, and a clearance between a bending section and the upper surface of a marble platform is measured by a feeler gauge.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the manual detection is utilized, so that the manual error exists, the detection efficiency is low, and the batch detection is not suitable.

Disclosure of Invention

In order to solve the problems that manual detection has errors and is low in efficiency and not suitable for batch detection when the outer diameter and the straightness of the pipe are detected, the application provides a method and a device for measuring the outer diameter and the straightness of the pipe.

The application provides a method and a device for measuring the outer diameter and the straightness of a pipe, which adopt the following technical scheme:

the utility model provides a tubular product external diameter and straightness accuracy measuring equipment, includes the workstation, still including setting up slide rail, a plurality of rotating assembly and the range finding subassembly that are used for driving the tubular product rotation on the workstation are a plurality of rotating assembly follows the length direction of slide rail distributes, the range finding subassembly slides and sets up on the slide rail, the one end of slide rail is provided with and is used for right the locating plate that the one end of tubular product was fixed a position.

By adopting the technical scheme, when the straightness of the pipe is measured, the pipe is firstly loaded on the plurality of rotating assemblies, one end of the pipe is abutted against the positioning plate, and then the distance measuring assembly slides along the length direction of the sliding rail, so that the straightness of the pipe is measured; when measuring the external diameter of tubular product, at first remove range finding subassembly to initial position, then start rotating assembly, a plurality of rotating assembly drive tubular product and rotate, slide range finding subassembly along the length direction of slide rail at last, measure the distance that the biggest minimum of whole external diameter and tubular product profile of tubular product are beated, realized the measurement to the tubular product external diameter.

In a specific possible embodiment, the distance measuring assembly comprises a sliding plate and two groups of distance measuring pieces arranged on the sliding plate, each group of distance measuring pieces comprises a distance measuring emitter and a distance measuring receiver, the distance measuring emitter and the distance measuring receiver are arranged oppositely along the circumferential direction of the pipe, the two groups of distance measuring pieces are uniformly distributed along the circumferential direction of the pipe, and the sliding plate moves along the length direction of the sliding rail through a sliding piece.

Through adopting above-mentioned technical scheme, when measuring the straightness accuracy and the external diameter of tubular product, the sliding plate drives two sets of range finding spare and moves along the length direction of slide rail, and when the motion, sends the range finding signal by the range finding transmitter, receives the range finding signal by the range finding receiver, after the range finding signal is received to the range finding receiver, gives PLC central controller with the range finding signal transfer, and then obtains the straightness accuracy data of tubular product and the external diameter data of tubular product.

In a specific can implementation scheme, the rotating assembly includes mounting panel and two be used for with the mounting panel rotates the bearing wheel of connecting, two enclose between the relative lateral wall of bearing wheel and close to form and be used for with the support of the laminating of tubular product perisporium presses the space, be provided with on the mounting panel and be used for driving two the synchronous pivoted rotation piece of bearing wheel.

Through adopting above-mentioned technical scheme, when drive tubular product rotated, utilized and rotated two bearing wheels of a drive synchronous rotation, made the bearing wheel drive tubular product rotate along self axis direction through utilizing the frictional force that sets up between tubular product and the bearing wheel in the space of pressing.

In a specific implementation scheme, a feeding assembly for feeding the abutting space is arranged on the workbench, the feeding assembly comprises a storage part, the storage part comprises a storage box, a discharge plate and a rotating rod, the storage box is arranged on the workbench, a holding tank for holding the pipe is arranged on the top wall of the storage box, a sliding groove for allowing the discharge plate to slide is arranged on the side wall of the storage box facing the sliding rail, a communicating groove is arranged between the bottom of the holding tank and the sliding groove, a discharge groove for holding the pipe is arranged on the top wall of the discharge plate facing the communicating groove, the rotating rod is rotatably connected with the top wall of the storage box, a connecting plate is connected with the storage box, one end of the connecting plate is rotatably connected with one end of the rotating rod through a connecting rod, and the connecting plate is rotatably connected with one side of the discharge plate close to the bottom of the sliding groove, the improved pipe material clamping device is characterized in that an extension spring is arranged in the storage box, one end of the extension spring and one end of the connecting plate are far away from the discharge plate and fixedly connected with each other, the other end of the extension spring and the storage box are fixedly connected with each other, a rotating rod is provided with a clamping clamp used for clamping pipes in the discharge chute, and when the discharge plate slides and extends out of a notch of the sliding chute, the clamping clamp clamps the pipes in the discharge chute.

By adopting the technical scheme, when the pipes are discharged, firstly, the pipes are placed into the containing tank, the pipes drop in the communicating tank and then drop in the discharging tank, when the rotating rod rotates on the storage box, the rotating rod drives the connecting rod to rotate, the connecting rod drives the connecting plate to rotate in the storage box, the connecting plate further drives the discharging plate to move towards the direction of the bottom of the tank far away from the sliding tank along the length direction of the sliding tank, the tension spring stretches, at the moment, the discharging plate drives the pipes arranged in the discharging tank to extend out of the storage box, and meanwhile, the clamping clamp moves to the discharging tank to clamp the pipes, so that the discharging of single pipe is realized; after the tubular product ejection of compact was accomplished, loosen the bull stick, the extension spring shrink, even the board is to the internal rotation at the storage box under the effect of extension spring, and even the board drives out the flitch and moves to the direction that is close to the groove tank bottom of sliding along the length direction in groove that slides, and then makes the new tubular product that sets up in the holding tank drop to the blown down tank in by the intercommunication groove, the ejection of compact of being convenient for next time.

In a specific possible embodiment, the discharging assembly further comprises a discharging member, the discharging member comprises a discharging hook for disengaging the pipe from the clamping clamp, a conveyor and a connecting plate, the blanking hook is arranged on the storage box and is staggered with the clamping clamp, the conveyor is obliquely arranged on the connecting plate, the connecting plate is arranged on the storage box in a sliding manner, the discharging plate is provided with a first rack, the connecting plate is provided with a second rack, a first gear is arranged between the first rack and the second rack, the first gear is meshed with the first rack and the second rack, the first gear is rotationally connected with the storage box, a plurality of baffles are uniformly arranged on a belt of the conveyor, and an accommodating space for accommodating the pipe is formed by enclosing the baffle and the belt of the conveyor.

By adopting the technical scheme, when the pipe is clamped by the clamping clamp, the rotating rod rotates downwards under the action of the tension spring, the included angle between the rotating rod and the storage box is enlarged, the pipe on the clamping clamp is discharged by the discharging hook, the pipe is separated from the clamping clamp, and the pipe falls downwards under the action of gravity; when the play flitch when keeping away from the direction motion of sliding groove tank bottom, first rack drives first gear and takes place to rotate on the storage box, and then first gear drives second rack and conveyer to the direction motion of being close to the storage box, when the centre gripping presss from both sides the direction motion of driving tubular product to keeping away from the play flitch, go out the flitch to the direction motion of being close to the sliding groove tank bottom, the conveyer is to the direction motion of keeping away from the storage box under the drive of second rack, when tubular product under the effect of unloading hook with the centre gripping press from both sides when breaking away from, tubular product drops in the accommodation space of conveyer, utilize the baffle to carry on spacingly to the position of tubular product, the unloading to tubular product has been realized.

In a specific can embodiment, ejection of compact subassembly still includes material loading spare, material loading spare includes dwang and a plurality of bearing that is used for the carrier of tubular product, the dwang with the workstation rotates the connection, the extending direction of dwang with the axis direction of tubular product parallels, and is a plurality of the carrier is followed the circumference evenly distributed of dwang, be equipped with the opening on the carrier, be provided with on the workstation and be used for the drive dwang pivoted rotates the motor.

Through adopting above-mentioned technical scheme, when ejection of compact board and first rack when moving to the direction that is close to the groove tank bottom that slides, conveyer and second rack are to the direction motion of keeping away from the storage box under the drive of first gear, when the conveyer removes to the position of being close to the dwang, it rotates to rotate motor drive dwang and a plurality of bracket, utilize the opening on the bracket to carry out the bearing to tubular product, make tubular product break away from the conveyer, the bracket further moves on tubular product, and then place tubular product in the space of pressing, the unloading to tubular product has been realized, be convenient for detect the straightness accuracy and the external diameter of tubular product.

In a specific implementation scheme, the storage box is provided with a rotating assembly for driving the rotating rod to be away from one end of the connecting rod to be close to the direction of the storage box, the rotating assembly comprises a transmission block and an electric cylinder for driving the rotating rod to rotate, one end of the electric cylinder is hinged to the storage box, a piston rod of the electric cylinder is fixedly connected with the transmission block, and the transmission block is abutted to the side wall of the storage box with the rotating rod.

Through adopting above-mentioned technical scheme, when the drive bull stick rotated, start the electric jar, the piston rod of electric jar drives the transmission piece and removes, and relative slip takes place between transmission piece and the bull stick butt for the transmission piece drives the bull stick and rotates on the storage box.

In a specific implementation scheme, be equipped with on the storage box and be used for making tubular product fall into spacing subassembly in the blown down tank, spacing subassembly include slide plate, third rack, be used for with third rack toothing's second gear and screw rod, the third rack sets up on the storage box, the extending direction of third rack with the direction of motion of blown down plate parallels, second gear rotation connection sets up on the slide plate, the both ends of screw rod respectively with blown down plate rotation connection, the screw rod with the coaxial fixed connection of second gear, the extending direction of screw rod with the axis direction of tubular product parallels, the slide plate slides and sets up on the blown down plate and with screw rod threaded connection, the lateral wall of slide plate with the perisporium of tubular product supports and pastes.

By adopting the technical scheme, when the pipe with the straightness lower than the standard value is fed, partial pipe is subjected to the acting force of other pipes arranged in the accommodating tank, so that one end of the partial pipe enters the discharge tank and the other end of the partial pipe extends to the outside of the discharge tank and is obliquely arranged, when the discharge plate slides in the direction far away from the bottom of the sliding tank, the second gear on the discharge plate and the third rack rotate relatively, the second gear drives the screw to rotate, so that the screw and the sliding plate rotate relatively, the screw is in threaded connection with each other, the sliding plate slides along the axial direction of the screw under the driving of the screw, so that the sliding plate moves from one end of the pipe extending into the discharge tank to one end of the pipe extending out of the discharge tank, at the moment, one end of the pipe extending out of the discharge tank falls into the discharge tank under the driving of the sliding plate, and the pipe damage caused by extrusion between the pipe and the wall of the discharge tank is avoided as much as possible, is favorable for realizing good discharging effect.

In a specific embodiment, the bottom of the accommodating groove is inclined.

Through adopting above-mentioned technical scheme, utilize the holding tank bottom that the slope set up for when detecting the measurement to a plurality of tubular products, tubular product moves to the direction that is close to the blown down tank under the action of gravity, has realized using manpower sparingly, labour saving and time saving to the automatic feeding of blown down tank.

The application further provides a method for measuring the outer diameter and the straightness of the pipe, which adopts the following technical scheme: feeding the pipe into the abutting space and enabling one end of the pipe to abut against the positioning plate; the sliding piece is used for driving the distance measuring assembly to slide along the length direction of the sliding rail, and the local outer diameter and the static straightness of the pipe are measured; the distance measuring assembly moves to an initial position; the rotating assembly is utilized to drive the pipe to rotate along the circumferential direction; and driving the distance measuring assembly to slide along the length direction of the slide rail by using the sliding piece, and measuring the maximum and minimum overall outer diameter of the pipe and the jumping distance of the pipe profile.

By adopting the technical scheme, the corresponding positions of the global straightness error and the local straightness error of the pipe are obtained through scanning and measuring of the distance measuring assembly, and then accurate measurement is carried out on the positions; the rotating assembly is adopted to drive the pipe to rotate, then the rotation run-out is measured to replace the straightness error, in the pipe rotating process, the run-out of the outer edge of the pipe can be measured, the maximum value and the minimum value of the diameter of the pipe can be measured, and the roundness of the cross section of the pipe at the measuring point can be calculated.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the straightness of the pipe is measured, the pipe is firstly loaded on the plurality of rotating assemblies, one end of the pipe is abutted with the positioning plate, and then the distance measuring assembly slides along the length direction of the sliding rail, so that the straightness of the pipe is measured; when the outer diameter of the pipe is measured, the distance measuring assembly is moved to an initial position, then the rotating assemblies are started, the pipe is driven to rotate by the rotating assemblies, and finally the distance measuring assembly slides along the length direction of the sliding rail, so that the maximum and minimum outer diameters of the whole pipe and the jumping distance of the pipe profile are measured, and the measurement of the outer diameter of the pipe is realized;

2. when the discharge plate slides in the direction far away from the bottom of the sliding groove, a second gear and a third rack on the discharge plate rotate relatively, the second gear drives the screw to rotate, so that the screw and the sliding plate rotate relatively, the screw and the sliding plate are in threaded connection, the sliding plate slides along the axis direction of the screw under the driving of the screw, so that the sliding plate moves from one end, extending into the discharge groove, of the pipe to one end, extending out of the discharge groove, of the pipe, at the moment, one end, extending out of the discharge groove, of the pipe falls into the discharge groove under the driving of the sliding plate, the pipe is prevented from being damaged due to extrusion between the pipe and the wall of the discharge groove as much as possible, and good discharge effect is favorably realized;

3. scanning and measuring through a distance measuring assembly to obtain corresponding positions of the global straightness error and the local straightness error of the pipe, and then accurately measuring the positions; the rotating assembly is adopted to drive the pipe to rotate, then the rotation run-out is measured to replace the straightness error, in the pipe rotating process, the run-out of the outer edge of the pipe can be measured, the maximum value and the minimum value of the diameter of the pipe can be measured, and the roundness of the cross section of the pipe at the measuring point can be calculated.

Drawings

Fig. 1 is a schematic structural diagram of a device for measuring the outer diameter and the straightness of a pipe in embodiment 1 of the present application.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic view of an overall structure for embodying a ranging module in embodiment 1 of the present application.

Fig. 4 is a schematic structural diagram of the overall structure for embodying a device for measuring the outer diameter and the straightness of the pipe in embodiment 2 of the present application.

Fig. 5 is a cross-sectional view taken along plane a-a of fig. 4.

Fig. 6 is a cross-sectional view taken along plane B-B of fig. 4.

Fig. 7 is an enlarged view of fig. 6 at B.

Fig. 8 is an enlarged view at C in fig. 4.

Description of the reference numerals: 1. a work table; 2. a slide rail; 3. a rotating assembly; 301. mounting a plate; 302. a supporting wheel; 4. a ranging assembly; 41. a sliding plate; 42. a distance measuring member; 421. a ranging transmitter; 422. a ranging receiver; 5. a feeding assembly; 51. a material storage member; 511. a storage box; 512. a discharge plate; 513. a rotating rod; 52. feeding parts; 521. rotating the rod; 522. supporting a group; 5221. a bracket; 53. blanking parts; 531. a blanking hook; 532. a conveyor; 533. a connecting plate; 6. a support assembly; 61. a support plate; 62. a support wheel; 7. a rotating member; 71. a driven pulley; 72. a driving pulley; 73. a tension wheel; 74. a synchronous belt; 75. a synchronous motor; 8. a pipe; 9. pressing the space; 10. positioning a plate; 11. a support space; 12. a communicating hole; 13. a sliding member; 131. a drive plate; 132. a rotating wheel; 133. a moving motor; 14. a guide rail; 15. a supporting plate; 16. accommodating grooves; 17. a sliding groove; 18. a communicating groove; 19. a discharge chute; 20. connecting plates; 21. a connecting rod; 22. a tension spring; 23. hooking holes; 24. a positioning column; 25. a clamping clip; 251. a clamping piece; 26. a clamping space; 28. a rotating assembly; 281. a transmission block; 282. an electric cylinder; 29. a fixing plate; 30. a sliding groove; 31. a limiting component; 311. a slide plate; 312. a third rack; 313. a second gear; 314. a screw; 32. a first rack; 33. a second rack; 34. a first gear; 35. a baffle plate; 36. an accommodating space; 37. an opening; 38. the motor is rotated.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses a method and equipment for measuring the outer diameter and the straightness of a pipe.

Example 1

Referring to fig. 1, a method and a device for measuring the outer diameter and the straightness of a pipe comprise a workbench 1, a slide rail 2 is arranged on the workbench 1, a plurality of groups of rotating assemblies 3 for driving the pipe 8 to rotate, a distance measuring assembly 4 for measuring the straightness and the outer diameter of the pipe 8, and a plurality of supporting assemblies 6 for supporting the pipe 8, in this embodiment, the rotating assemblies 3 are arranged in two groups, the supporting assemblies 6 are arranged in one group, the two groups of rotating assemblies 3 and the one group of supporting assemblies 6 are arranged on the slide rail 2 in a sliding manner and are positioned on the slide rail 2 through connecting bolts, and the disassembly is convenient. One end fixedly connected with of slide rail 2 is used for going on the locating plate 10 of location to the one end of the tubular product 8 that awaits measuring.

When the straightness of the pipe 8 is measured, firstly, the pipe 8 is loaded on the rotating assembly 3, the length direction of the pipe 8 is parallel to the length direction of the sliding rail 2, one end of the pipe 8 is abutted against the positioning plate 10, and then the distance measuring assembly 4 slides along the length direction of the sliding rail 2, so that the straightness of the pipe 8 is measured; when measuring the external diameter of tubular product 8, at first remove range finding subassembly 4 to initial position, then start rotating assembly 3, a plurality of rotating assembly 3 drive tubular product 8 and rotate, slide range finding subassembly 4 along the length direction of slide rail 2 at last, measure the distance that the biggest minimum of whole external diameter of tubular product 8 and the 8 profiles of tubular product are beated, realized the measurement to the 8 external diameters of tubular product.

Referring to fig. 1 and 2, the rotating assembly 3 includes a mounting plate 301 and two supporting wheels 302, the mounting plate 301 is vertically disposed, the two supporting wheels 302 are rotatably connected and disposed on a side wall of the mounting plate 301, a pressing space 9 for being attached to a peripheral wall of the pipe 8 is formed between opposite side walls of the two supporting wheels 302, a rotating member 7 for driving the two supporting wheels 302 to rotate synchronously is disposed on a side wall of the mounting plate 301 away from the supporting wheels 302, the rotating member 7 includes two driven pulleys 71 rotatably connected and disposed on the mounting plate 301, a driving pulley 72, a tension pulley 73, a synchronous belt 74 and a synchronous motor 75, the driven pulleys 71 and the supporting wheels 302 are in one-to-one correspondence and coaxial connection, a diameter of the driven pulley 71 is smaller than a diameter of the supporting wheels 302, the synchronous motor 75 is fixedly connected with the mounting plate 301, an output shaft of the synchronous motor 75 is in transmission connection with the driving pulley 72, the synchronous belt 74 is sequentially wound on the driven pulleys 71, the synchronous belt 71, One set of rotating assemblies 3 is arranged at one end of the pipe 8, and the other set of rotating assemblies 3 is arranged at the other end of the pipe 8 on the driving pulley 72 and the tension pulley 73.

When the pipe 8 is driven to rotate, the synchronous motor 75 is started, the synchronous motor 75 drives the driving pulley 72 to rotate, the driving pulley 72 drives the driven pulley 71 to rotate, the driven pulley 71 drives the bearing wheel 302 to rotate, and the bearing wheel 302 drives the pipe 8 to rotate along the axis direction of the pipe 8 by utilizing the friction force between the pipe 8 arranged in the abutting space 9 and the peripheral wall of the bearing wheel 302.

Referring to fig. 1, the supporting component 6 includes a supporting plate 61 and two supporting wheels 62, the two supporting wheels 62 are rotatably connected to be disposed on the supporting plate 61, a supporting space 11 for supporting the pipe 8 is formed between the two supporting wheels 62, the supporting component 6 is disposed between the two sets of rotating components 3, and the supporting component 6 is disposed to reduce errors when the straightness of the pipe 8 is measured due to deformation caused by less supporting of the pipe 8.

Referring to fig. 1 and 3, the distance measuring assembly 4 includes a sliding plate 41 and two sets of distance measuring pieces 42 disposed on the sliding plate 41, a communication hole 12 for the support assembly 6 and the rotating assembly 3 to pass through is disposed on the sliding plate 41, in this embodiment, the distance measuring pieces 42 are disposed as laser sensors, each set of distance measuring pieces 42 includes a distance measuring transmitter 421 and a distance measuring receiver 422, the distance measuring transmitter 421 and the distance measuring receiver 422 are disposed opposite to each other along the circumferential direction of the pipe 8, the two sets of distance measuring pieces 42 are arranged to intersect at 90 ° along the circumferential direction of the pipe 8, and the sliding plate 41 moves along the length direction of the sliding rail 2 through the sliding piece 13. The sliding part 13 comprises two driving plates 131, a rotating wheel 132 and a moving motor 133 which are rotatably connected and arranged on the driving plates 131, guide rails 14 are arranged on two sides of the sliding rail 2, the length direction of each guide rail 14 is parallel to that of the sliding rail 2, one side of each driving plate 131 and one side of each sliding plate 41 are close to the side wall of the workbench 1 and fixedly connected with each other, the rotating wheel 132 is arranged between the driving plates 131 and the workbench 1, the peripheral wall of the rotating wheel 132 is abutted to the side wall of each guide rail 14, a supporting plate 15 used for improving the connection strength of the sliding plates 41 and the driving plates 131 is arranged on each driving plate 131, the moving motor 133 is fixedly connected with one driving plate 131, and the output shaft of the moving motor 133 is in transmission connection with the rotating wheel 132 on the driving plates 131.

When the straightness and the outer diameter of the pipe 8 are measured, the moving motor 133 is started, the moving motor 133 drives the rotating wheel 132 and the guide rail 14 to move relatively, and further drives the sliding plate 41 and the two distance measuring components 42 to move along the length direction of the sliding rail 2, during the movement, the distance measuring emitter 421 emits a distance measuring signal, the distance measuring receiver 422 receives the distance measuring signal, and after the distance measuring receiver 422 receives the distance measuring signal, the distance measuring signal is transmitted to the PLC central controller, and further the straightness data of the pipe 8 and the outer diameter data of the pipe 8 are obtained.

The application further provides a method for measuring the outer diameter and the straightness of the pipe, which comprises the following specific steps:

s1, feeding the pipe 8 into the abutting space 9 and enabling one end of the pipe 8 to abut against the positioning plate 10;

s2, driving the distance measuring assembly 4 to slide along the length direction of the slide rail 2 by using the sliding piece 13, and measuring the local outer diameter and the static straightness of the pipe 8;

s3, moving the distance measuring assembly 4 to the initial position;

s4, driving the pipe 8 to rotate along the circumferential direction by using the rotating component 3;

s5, driving the distance measuring assembly 4 to slide along the length direction of the slide rail 2 by using the sliding piece 13, and measuring the maximum and minimum overall outer diameter of the pipe 8 and the distance of the contour run-out of the pipe 8;

the implementation principle of the embodiment 1 is as follows: scanning and measuring through the distance measuring assembly 4 to obtain corresponding positions of the global straightness error and the local straightness error of the pipe 8, and then accurately measuring the positions; adopt rotating assembly 3 to drive 8 gyration of tubular product, measure the gyration of tubular product 8 and beat then to replace the straightness accuracy error, at 8 gyration in-process of tubular product, not only can measure the beat of 8 outside edges of tubular product, can also measure the maximum value and the minimum of 8 diameters of tubular product, thereby calculate the circularity of tubular product 8 cross-sections at the measuring point department.

Example 2

Referring to fig. 4, the present embodiment is different from embodiment 1 in that a feeding assembly 5 is further included.

The feeding assembly 5 is arranged on the workbench 1, and the feeding assembly 5 is used for automatically feeding the abutting space 9. The loading assembly 5 comprises a magazine 51, a lower part 53 and an upper part 52.

Referring to fig. 4 and 5, the magazine 51 includes a magazine 511, discharge plate 512 and bull stick 513, storage box 511 sets up on workstation 1, storage box 511 sets up the one side on the long limit of slide rail 2, offer holding tank 16 that is used for holding tubular product 8 on storage box 511's the roof, holding tank 16's tank bottom slope sets up, holding tank 16 tank bottom is to workstation 1's distance by the one end that is close to slide rail 2 to the one end of keeping away from slide rail 2 and increase progressively, storage box 511 offers the chute 17 that is used for holding discharge plate 512 on slide rail 2's the lateral wall, chute 17's length is greater than the length of the tubular product 8 that awaits measuring, discharge plate 512 slides along chute 17's the degree of depth direction in chute 17, be equipped with intercommunication groove 18 between holding tank 16's tank bottom and the chute 17, discharge plate 512 has seted up on being close to chute 17 notch's the roof, discharge groove 19's length direction and tubular product 8's length direction parallel. The middle part of the rotating rod 513 is rotatably connected with the top wall of the storage box 511, the connecting plate 20 is rotatably connected in the storage box 511, a connecting rod 21 is arranged between the rotating rod 513 and the connecting plate 20, one end of the connecting rod 21 is rotatably connected with one end of the rotating rod 513, the other end of the connecting rod 21 is rotatably connected with one end of the connecting plate 20, the connecting plate 20 is rotatably connected with one side of the discharging plate 512 close to the bottom of the sliding chute 17, a tension spring 22 is arranged in the storage box 511, a hooking hole 23 for hooking the tension spring 22 is formed in the discharging plate 512, a positioning column 24 is fixedly connected to the inner bottom wall of the storage box 511, one end of the tension spring 22 is hooked in the hooking hole 23, the other end of the tension spring 22 is hooked on the positioning column 24, a clamping clamp 25 for clamping the pipe 8 in the discharging chute 19 is arranged at one end of the rotating rod 513 facing the side wall of the storage box 511 and far away from the connecting rod 21, the clamping clamp 25 is composed of two clamping sheets 251, a clamping space 26 for clamping the pipe 8 is formed by enclosing the two clamping sheets 251, when the discharging plate 512 slides and extends out of the notch of the sliding groove 17, the clamping clamp 25 clamps the pipe 8 in the discharging groove 19. The storage box 511 is provided with two sets of rotating rods 513, wherein one set of rotating rods 513 is used for clamping one end of the tube 8, and the other set of rotating rods 513 is used for clamping the other end of the tube 8.

When discharging the pipes 8, firstly placing a plurality of pipes 8 into the accommodating groove 16, making one of the pipes 8 drop in the communicating groove 18 by utilizing the groove bottom of the inclined accommodating groove 16, and then dropping in the discharging groove 19, when the rotating rod 513 rotates on the storage box 511, the rotating rod 513 drives the connecting rod 21 to rotate, the connecting rod 21 drives the connecting plate 20 to rotate in the storage box 511, the connecting plate 20 further drives the discharging plate 512 to move towards the direction of the groove bottom far away from the sliding groove 17 along the length direction of the sliding groove 17, the tension spring 22 stretches, at the moment, the discharging plate 512 drives the pipe 8 arranged in the discharging groove 19 to stretch out of the storage box 511, meanwhile, the clamping clamp 25 moves to the discharging groove 19 to clamp the pipe 8, and discharging of a single pipe 8 is realized; after the ejection of compact of tubular product 8 was accomplished, loosen bull stick 513, extension spring 22 contracts, even board 20 is at extension spring 22's effect internal rotation in storage box 511 downwards, even board 20 drives ejection of compact board 512 to the direction motion of being close to the groove 17 tank bottom of sliding along the length direction of sliding groove 17, and then makes new setting tubular product 8 in holding tank 16 drop to the blown down tank 19 in by intercommunication groove 18, the ejection of compact of next time of being convenient for.

Referring to fig. 4 and 5, the storage box 511 is provided with a rotating assembly 28 for driving the rotating rod 513 to rotate towards the direction close to the storage box 511, the rotating assembly 28 includes a driving block 281 and an electric cylinder 282 for driving the rotating rod 513 to rotate, a fixing plate 29 is fixedly connected to the top wall of the storage box 511, the fixing plate 29 is vertically arranged, one end of the electric cylinder 282 is hinged to the side wall of the fixing plate 29 facing the rotating rod 513, a piston rod of the electric cylinder 282 is fixedly connected to the driving block 281, and the driving block 281 and the rotating rod 513 are abutted against the side wall of the storage box 511 far away from the connecting rod 21.

When the rotating rod 513 is driven to rotate, the electric cylinder 282 is started, the piston rod of the electric cylinder 282 drives the transmission block 281 to move, the transmission block 281 is abutted to the rotating rod 513, and relative sliding occurs between the transmission block 281 and the rotating rod 513, so that the transmission block 281 drives the rotating rod 513 to rotate on the storage box 511.

Referring to fig. 5 and 6, when a pipe 8 with a linear degree lower than a standard value is blanked, a part of the pipe 8 is acted by other pipes 8 arranged in the accommodating groove 16, so that when one end of the pipe 8 enters the discharging groove 19 and the other end extends to the outside of the discharging groove 19, the pipe 8 is obliquely arranged, the storage box 511 is provided with a limiting component 31 for enabling the pipe 8 to fall into the discharging groove 19, the limiting component 31 comprises a sliding plate 311, a third rack 312, a second gear 313 and a screw 314, the third rack 312 is fixedly connected and arranged on the inner side wall of the storage box 511, the length direction of the third rack 312 is perpendicular to the axial direction of the pipe 8, the discharging plate 512 is internally provided with a sliding groove 30 for the sliding plate 311 to slide, the sliding plate 311 penetrates out of the groove wall of the discharging groove 19, the screw 314 is arranged in the sliding groove 30, and both ends of the screw 314 are rotatably connected with the groove wall of the sliding groove 30, one end of the screw 314 is coaxially and fixedly connected with the second gear 313, the second gear 313 is meshed with the third rack 312, the part of the sliding plate 311 extending out of the discharging groove 19 is horizontally arranged, the bottom wall of the sliding plate 311 is abutted with the peripheral wall of the pipe 8, the length of the sliding groove 30 is larger than that of the accommodating groove 16, and the sliding plate 311 is convenient to accommodate when the pipe 8 is discharged from the accommodating groove 16.

When the pipe 8 inclines in the accommodating groove 16 and does not completely extend into the accommodating groove 16, the discharge plate 512 slides in the direction away from the bottom of the sliding groove 17, the second gear 313 and the third rack 312 on the discharge plate 512 rotate relatively, the second gear 313 drives the screw 314 to rotate, further, the screw 314 and the sliding plate 311 rotate relatively, the screw 314 is in threaded connection with the sliding plate 311, the sliding plate 311 slides in the axial direction of the screw 314 under the driving of the screw 314, further, the sliding plate 311 moves towards the end of the pipe 8 extending into the discharge groove 19 from the end of the pipe 8 extending into the discharge groove 19, at the moment, the end of the pipe 8 extending out of the discharge groove 19 falls into the discharge groove 19 under the driving of the sliding plate 311, the pipe 8 is prevented from being damaged due to extrusion between the walls of the pipe 8 and the discharge groove 19 as much as possible, and a good discharging effect is facilitated.

Referring to fig. 6 and 7, the blanking member 53 includes a blanking hook 531, a conveyor 532 and a connecting plate 533, the blanking hook 531 is used for separating the tube 8 from the clamping clip 25, the blanking hook 531 is provided with two sets, the two sets of blanking hooks 531 are both fixedly connected to the top wall of the storage box 511 and are both staggered with the two sets of rotating rods 513, the conveyor 532 is obliquely arranged on the connecting plate 533, the distance from the conveyor 532 to the workbench 1 decreases progressively from one side close to the storage box 511 to one side close to the sliding rail 2, the connecting plate 533 is slidably arranged on the storage box 511, and the moving direction of the connecting plate 533 is parallel to the moving direction of the discharging plate 512.

Go out the first rack 32 of fixedly connected with on the flitch 512, the length direction of first rack 32 and the direction of motion of going out flitch 512 are parallel, fixedly connected with second rack 33 on the connecting plate 533, the length direction of second rack 33 and the direction of motion of going out flitch 512 are parallel, be equipped with first gear 34 between first rack 32 and the second rack 33, first gear 34 all meshes with first rack 32 and second rack 33 respectively, first gear 34 rotates with storage box 511 to be connected, evenly be equipped with a plurality of baffles 35 along circumference on the belt of conveyer 532, enclose between baffle 35 and the belt and close and form accommodation space 36 that is used for holding tubular product 8.

When the pipe 8 is clamped by the clamping clamp 25, at the moment, the tension spring 22 contracts, the rotating rod 513 rotates downwards under the action of the tension spring 22, the included angle between the rotating rod 513 and the storage box 511 is increased, the pipe 8 on the clamping clamp 25 is fed by the feeding hook 531, the pipe 8 is separated from the clamping clamp 25, and the pipe 8 falls downwards under the action of gravity; when the discharge plate 512 moves in a direction away from the bottom of the sliding groove 17, the first rack 32 drives the first gear 34 to rotate on the storage box 511, and then the first gear 34 drives the second rack 33 and the conveyor 532 to move in a direction close to the storage box 511, when the clamping clamp 25 drives the pipe 8 to move in a direction away from the discharge plate 512, the discharge plate 512 moves in a direction close to the bottom of the sliding groove 17, the conveyor 532 moves in a direction away from the storage box 511 under the driving of the second rack 33, when the pipe 8 is separated from the clamping clamp 25 under the action of the discharge hook 531, the pipe 8 drops in the accommodating space 36 of the conveyor 532, the position of the pipe 8 is limited by the baffle 35, and the discharge of the pipe 8 is realized.

Referring to fig. 4 and 8, the feeding member 52 includes a rotating rod 521 and four groups of support groups 522, the rotating rod 521 is rotatably connected to the workbench 1, an extending direction of the rotating rod 521 is parallel to an axial direction of the pipe 8, the four groups of support groups 522 are uniformly distributed along the axial direction of the rotating rod 521, each group of support groups 522 includes three groups of brackets 5221, the three groups of brackets 5221 are uniformly distributed along a circumferential direction of the rotating rod 521, in this embodiment, the brackets 5221 are made of an elastic material, such as a rubber material, openings 37 are formed in the brackets 5221, and the workbench 1 is provided with a rotating motor 38 for driving the rotating rod 521 to rotate.

When the discharge plate 512 and the first rack 32 move towards the direction close to the bottom of the sliding groove 17, the conveyor 532 and the second rack 33 move towards the direction far away from the storage box 511 under the driving of the first gear 34, when the conveyor 532 moves to the position close to the rotating rod 521, the rotating motor 38 drives the rotating rod 521 and the three groups of brackets 5221 to rotate, the pipe 8 is supported by the opening 37 on the bracket 5221, so that the pipe 8 is separated from the conveyor 532, the brackets 5221 further move the pipe 8, and the pipe 8 is placed in the pressing space 9, so that the blanking of the pipe 8 is realized, and the straightness and the outer diameter of the pipe 8 can be detected conveniently.

The implementation principle of the embodiment 2 is as follows: firstly, a plurality of pipes 8 are placed in the holding tank 16, one of the pipes 8 falls in the discharge tank 19 by utilizing the bottom of the inclined holding tank 16, when the rotating rod 513 rotates on the storage box 511, the connecting plate 20 drives the discharge plate 512 to move towards the direction of the bottom of the storage box 511 away from the sliding tank 17 along the length direction of the sliding tank 17, the tension spring 22 stretches, the discharge plate 512 drives the pipe 8 arranged in the discharge tank 19 to extend out of the storage box 511, meanwhile, the clamping clamp 25 moves to the discharge tank 19 to clamp the pipe 8, the pipe 8 on the clamping clamp 25 is discharged by utilizing the discharging hook 531, the pipe 8 is separated from the clamping clamp 25, meanwhile, when the discharge plate 512 moves towards the direction of the bottom of the storage box 17, the first gear 34 drives the second rack 33 and the conveyor 532 to move towards the direction close to the storage box 511, and when the clamping clamp 25 drives the pipe 8 to move towards the direction away from the discharge plate 512, go out flitch 512 to the direction motion that is close to the 17 tank bottoms of groove that slides, conveyer 532 is to keeping away from the direction motion of storage box 511 under the drive of second rack 33, it rotates to rotate motor 38 and drive dwang 521 and three group's brackets 5221, utilize opening 37 on the bracket 5221 to carry out the bearing to tubular product 8, make tubular product 8 break away from conveyer 532, bracket 5221 carries out further removal to tubular product 8, and then place tubular product 8 in pressing space 9, realized the unloading to tubular product 8, be convenient for detect the straightness accuracy and the external diameter of tubular product 8 in batches.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a tubular product external diameter and straightness accuracy measuring equipment, includes workstation (1), its characterized in that: still including setting up slide rail (2), a plurality of rotating assembly (3) and the range finding subassembly (4) that are used for driving tubular product (8) rotation on workstation (1), a plurality of rotating assembly (3) are followed the length direction of slide rail (2) distributes, range finding subassembly (4) slide and set up on slide rail (2), the one end of slide rail (2) is provided with and is used for right locating plate (10) are carried out to the one end of tubular product (8) and fix a position.

2. The pipe outside diameter and straightness measuring apparatus according to claim 1, wherein: the distance measuring assembly (4) comprises a sliding plate (41) and two groups of distance measuring pieces (42) arranged on the sliding plate (41), each group of distance measuring pieces (42) comprises a distance measuring emitter (421) and a distance measuring receiver (422), the distance measuring emitter (421) and the distance measuring receiver (422) are arranged along the circumferential direction of the pipe (8) oppositely, the distance measuring pieces (42) are distributed along the circumferential direction of the pipe (8) uniformly, and the sliding plate (41) moves along the length direction of the sliding rail (2) through a sliding piece (13).

3. The pipe outside diameter and straightness measuring apparatus according to claim 1, wherein: the rotating assembly (3) comprises a mounting plate (301) and two supporting wheels (302) which are used for being connected with the mounting plate (301) in a rotating mode, two supporting wheels (302) are arranged between opposite side walls of the supporting wheels (302) in a surrounding mode to form a supporting space (9) which is used for being attached to the peripheral wall of the pipe (8), and the mounting plate (301) is provided with a rotating piece (7) which is used for driving the two supporting wheels (302) to rotate synchronously.

4. The pipe outside diameter and straightness measuring apparatus according to claim 3, wherein: the working table (1) is provided with a feeding assembly (5) for feeding the abutting space (9), the feeding assembly (5) comprises a storage piece (51), the storage piece (51) comprises a storage box (511), a discharge plate (512) and a rotating rod (513) which are arranged on the working table (1), the top wall of the storage box (511) is provided with an accommodating groove (16) for accommodating the pipe (8), the storage box (511) faces the side wall of the sliding rail (2) and is provided with a sliding groove (17) for allowing the discharge plate (512) to slide, a communicating groove (18) is arranged between the bottom of the accommodating groove (16) and the sliding groove (17), the discharge plate (512) faces the top wall of the communicating groove (18) and is provided with a discharge groove (19) for accommodating the pipe (8), and the rotating rod (513) is rotatably connected with the top wall of the storage box (511), the storage box (511) is rotationally connected with a connecting plate (20), one end of the connecting plate (20) is rotationally connected with one end of the rotating rod (513) through a connecting rod (21), the connecting plate (20) is rotationally connected with one side of the discharging plate (512) close to the bottom of the sliding groove (17), a tension spring (22) is arranged in the storage box (511), one end of the tension spring (22) is fixedly connected with one end of the connecting plate (20) far away from the discharging plate (512), the other end of the tension spring (22) is fixedly connected with the storage box (511), the rotating rod (513) is provided with a clamping clamp (25) used for clamping the pipe (8) in the discharge chute (19), when the discharge plate (512) slides and extends out of the notch of the sliding groove (17), the clamping clamp (25) clamps the pipe (8) in the discharge chute (19).

5. The pipe outside diameter and straightness measuring apparatus according to claim 4, wherein: the discharging assembly further comprises a discharging part (53), the discharging part (53) comprises a discharging hook (531) for separating the tube (8) from the clamping clamp (25), a conveyor (532) and a connecting plate (533), the discharging hook (531) is arranged on the storage box (511) and staggered with the clamping clamp (25), the conveyor (532) is obliquely arranged on the connecting plate (533), the connecting plate (533) is slidably arranged on the storage box (511), a first rack (32) is arranged on the discharging plate (512), a second rack (33) is arranged on the connecting plate (533), a first gear (34) is arranged between the first rack (32) and the second rack (33), the first gear (34) is meshed with the first rack (32) and the second rack (33), and the first gear (34) is rotatably connected with the storage box (511), a plurality of baffle plates (35) are uniformly arranged on a belt of the conveyor (532), and an accommodating space (36) for accommodating the pipe (8) is formed by enclosing the baffle plates (35) and the belt of the conveyor (532).

6. The pipe outside diameter and straightness measuring apparatus according to claim 5, wherein: the ejection of compact subassembly still includes material loading spare (52), material loading spare (52) include dwang (521) and a plurality of bearing that is used for bracket (5221) of tubular product (8), dwang (521) with workstation (1) rotates and connects, the extending direction of dwang (521) with the axis direction of tubular product (8) parallels, and is a plurality of bracket (5221) are followed the circumference evenly distributed of dwang (521), be equipped with opening (37) on bracket (5221), be provided with on workstation (1) and be used for the drive dwang (521) pivoted rotates motor (38).

7. The pipe outside diameter and straightness measurement apparatus of claim 6, wherein: be equipped with on storage box (511) and be used for the drive bull stick (513) are kept away from connecting rod (21) one end is to being close to storage box (511) direction pivoted rotating assembly (28), rotating assembly (28) include driving block (281) and are used for the drive bull stick (513) pivoted electric jar (282), the one end of electric jar (282) with storage box (511) are articulated, the piston rod of electric jar (282) with driving block (281) fixed connection, driving block (281) with bull stick (513) are kept away from the lateral wall butt of storage box (511).

8. The pipe outside diameter and straightness measuring apparatus according to claim 7, wherein: the storage box (511) is provided with a limiting component (31) for enabling the pipe (8) to fall into the discharge chute (19), the limiting component (31) comprises a sliding plate (311), a third rack (312), a second gear (313) meshed with the third rack (312) and a screw (314), the third rack (312) is arranged on the storage box (511), the extending direction of the third rack (312) is parallel to the moving direction of the discharge plate (512), the second gear (313) is rotatably connected and arranged on the sliding plate (311), two ends of the screw (314) are rotatably connected with the discharge plate (512) respectively, the screw (314) is coaxially and fixedly connected with the second gear (313), the extending direction of the screw (314) is parallel to the axial direction of the pipe (8), the sliding plate (311) is arranged on the discharging plate (512) in a sliding mode and is in threaded connection with the screw (314), and the side wall of the sliding plate (311) is abutted to the peripheral wall of the pipe (8).

9. The pipe outside diameter and straightness measuring apparatus according to claim 4, wherein: the groove bottom of the accommodating groove (16) is obliquely arranged.

10. A method for measuring the outer diameter and the straightness of a pipe is characterized by comprising the following steps:

feeding the pipe (8) into the pressing space (9) and enabling one end of the pipe (8) to be abutted against the positioning plate (10);

the sliding piece (13) is used for driving the distance measuring assembly (4) to slide along the length direction of the sliding rail (2) and measuring the local outer diameter and the static straightness of the pipe (8);

the distance measuring assembly (4) is moved to an initial position;

the rotating assembly (3) is utilized to drive the pipe (8) to rotate along the circumferential direction;

the sliding piece (13) is utilized to drive the distance measuring assembly (4) to slide along the length direction of the sliding rail (2), and the maximum and minimum overall outer diameter of the pipe (8) and the distance of the profile run-out of the pipe (8) are measured.