Non-contact inner diameter measuring instrument

Abstract

The utility model provides a non-contact type inner diameter measuring instrument. The non-contact type inner diameter measuring instrument comprises a placement mechanism arranged on a supporting table top and a detection mechanism capable of extending to the placement mechanism. The placing mechanism comprises a placing disc capable of driving a to-be-detected steel ring to rotate, the to-be-detected steel ring and the placing disc are concentrically placed, and the detection mechanism moves in the radial direction according to the diameter of the to-be-detected steel ring with the circle center of the placing disc as the datum point and is used for scanning the upper end face and the lower end face of the to-be-detected steel ring on the placing disc. The utility model has the beneficial effects that on the basis of ensuring that the steel wire ring does not deform, the inner wall and the outer wall of the steel wire ring can be scanned and measured, the data of the inner perimeter, the outer perimeter, the thickness and the ovality of the steel wire ring can be obtained at the same time, the instrument is convenient to operate, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of measuring instrument, especially a non -contact type inner diameter measuring instrument. BACKGROUND

[0002] When the steel ring is completed winding, the data of the steel ring needs to be tested to determine whether the finished product is qualified.

[0003] The traditional method is to measure the inner diameter and outer diameter of the steel ring manually, that is, to measure manually by a caliper, but the steel ring will deform after being extruded, so the measurement data is inaccurate, and the ovality of the steel ring cannot be measured.

[0004] To prevent the steel ring from deforming, the prior art also uses a method of supporting the inner diameter of the steel ring to measure, that is, to support the inner wall of the steel ring by two half-circle supporting blocks that can move relative to each other, because the two half-circle supporting blocks move outward to expand the steel ring, so the distance between the two half-circle supporting blocks can be measured to calculate the circumference, diameter, etc. of the steel ring, but this method also has calculation and measurement errors, and the steel ring is expanded by the supporting blocks, so the ovality of the steel ring cannot be obtained.

[0005] To cope with the traditional manual measurement method, the prior art also improves the measurement method, that is, the steel ring is stationary, the distance between the inner wall of the steel ring and the sensor at different angles is measured by rotating the distance sensor at the center of the steel ring, and the inner circumference and ovality of the steel ring are calculated. Although this method does not deform the steel ring compared with the traditional method, there is still measurement error when calculating by measuring the distance at different angles, and in order to expand the scanning range of rotation, the height of the sensor needs to be increased, and this method is not convenient for measuring the outer diameter of the steel ring. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the shortcomings of the prior art, providing a non-contact inner diameter measuring instrument, which can scan and measure the inner wall and outer wall of the steel ring without deforming the steel ring, can obtain the data of the inner circumference, outer circumference, thickness and ovality of the steel ring at the same time, and is convenient to operate and improves the detection efficiency.

[0007] To solve the above technical problems, the utility model adopts the technical scheme of a non-contact inner diameter measuring instrument, which comprises a placing mechanism arranged on a support table and a detection mechanism that can extend to the placing mechanism.

[0008] The placing mechanism comprises a placing disc capable of driving the steel ring to be detected to rotate, and the steel ring to be detected is concentrically placed on the placing disc; the detection mechanism moves radially based on the center of the placing disc as a reference point according to the diameter of the steel ring to be detected, and is used for scanning the upper and lower end faces of the steel ring to be detected on the placing disc.

[0009] Further, the placing mechanism comprises a fixing frame and a driving frame arranged on the fixing frame, the driving frame rotates on the fixing frame by means of A driving device, and the placing disc is horizontally arranged in the driving frame.

[0010] Further, the detection mechanism comprises two sensors arranged oppositely, the lower sensor can scan the lower end face of the steel ring to be detected through the placing disc, and the two sensors are connected by means of a connecting frame.

[0011] Further, a correction disc is connected to the upper end face of the fixing frame, and the scale on the correction disc can be used as a reference for the placement position of the steel ring to be detected on the placing disc.

[0012] Further, the placing disc is made of transparent material to feedback the scale, and a detection groove through which the signal of the lower sensor can pass is arranged on the correction disc.

[0013] Further, the inner side of the driving frame is outwardly protruded to form a clamping table, and the outer diameter of the correction disc is spaced from the outer diameter of the fixing frame to form a rotating groove in which the clamping table is arranged.

[0014] Further, a moving groove in which the connecting frame can move is arranged on the support table, the moving groove extends forward, and the signal of the lower sensor can be emitted and received through the moving groove.

[0015] Further, the detection mechanism is displaced by means of a moving device, the moving device comprises guide rails arranged on both sides of the moving groove respectively, the connecting frame is connected to the sliding blocks of the guide rails by means of a moving frame, and one side of the moving frame is moved radially by means of B driving device.

[0016] Further, an upper table shell protecting the placing mechanism and a protection shell protecting the detection mechanism are arranged on the support table in sequence, and a through groove through which the signal of the upper sensor can be emitted and received is arranged on the end face of the protection shell facing the placing mechanism.

[0017] The utility model has the advantages and positive effects that:

[0018] 1. By adopting the above technical scheme, compared with the traditional measurement method, the steel ring does not need to be extruded, and only needs to be placed on the placing disc to detect the steel ring in a natural state, so that the deformation of the steel ring is avoided, and the measurement accuracy is improved.

[0019] The utility model discloses a sensor is stopped after moving to the position corresponding to the steel wire loop, and the fixed point of sensor is the reference datum point, drives the steel wire loop to rotate through the placement disc, and the sensor scans the steel wire loop, compared with scanning the steel wire loop through the sensor rotation, can avoid the measurement error produced through the sensor rotation, causes the inaccurate data of feedback, and the utility model discloses still can scan the outer wall of steel wire loop, and thus calculates the outer perimeter of steel wire loop.

[0020] 2, the detection mechanism that can move relative to the placement mechanism, through adjusting its distance with the placement mechanism, to adapt to the steel wire loop of different diameter, not restricted by the rotation angle, improve the scope of application.

[0021] 3, the setting of correction disc makes the placement position of the steel wire loop to be detected have reference on one hand, and can also directly see whether the steel wire loop to be detected has obvious deformation on the other hand.

[0022] 4, the utility model discloses compact structure, and the position of two sensors sets moderately, does not occupy space or is inconvenient to repair because of setting higher position, and the upper table shell and protection shell can effectively protect the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is the structure schematic diagram of the utility model;

[0024] Fig. 2 It is the sectional view of the utility model;

[0025] Fig. 3 It is the structure schematic diagram of the placement mechanism of the utility model;

[0026] Fig. 4 It is the bottom view of the utility model.

[0027] In the drawing:

[0028] 1, support platform;11, moving groove;2, upper table shell;21, protection shell;

[0029] 3, connecting frame;31, A sensor;32, B sensor;

[0030] 4, placement disc;5, drive frame;51, gear teeth;52, pressing piece;

[0031] 6, correction disc;61, detection groove;62, fixed frame;7, drive gear;

[0032] 8, moving frame;81, nut seat;82, lead screw;83, guide rail. DETAILED DESCRIPTION

[0033] The utility model will be further explained in connection with the embodiment and the drawing.

[0034] AsFigs. 1 to 4 The embodiment provides a non-contact inner diameter measuring instrument, which comprises a placing mechanism arranged on the surface of the support table 1 and a detection mechanism capable of extending to the placing mechanism.

[0035] The placing mechanism comprises a fixing frame 62, a driving frame 5 and a placing disc 4 arranged concentrically from bottom to top, the fixing frame 62 is fixedly connected to the surface of the support table 1, the driving frame 5 is arranged on the fixing frame 62, the driving frame 5 is rotated on the fixing frame 62 by means of the A driving device, and the placing disc 4 is horizontally arranged in the driving frame 5 and used for driving the concentric rotation of the steel ring to be detected.

[0036] The inner wall of the driving frame 5 is outwardly convex to form a clamping table, the clamping table is arranged on the fixing frame 62, and the driving frame 5 is suspended above the surface of the support table 1, in the embodiment, a plurality of teeth 51 are arranged around the outer diameter of the driving frame 5, the A driving device comprises a driving gear 7 arranged on the surface of the support table 1 and a motor and a speed reducer arranged in sequence and driving the rotation of the driving gear 7, the teeth of the driving gear 7 are engaged with the teeth 51 around the driving frame 5, and the driving frame 5 is driven to rotate.

[0037] A downward sinking groove is arranged on the upper end surface of the driving frame 5, so that the placing disc 4 is horizontally arranged in the driving frame 5, in order to fix the position of the placing disc 4 and prevent it from being taken out, the detachable pressing plates 52 are arranged in a cross shape on the upper end surface of the driving frame 5, and the upper end surface of the placing disc 4 is pressed and fixed through the pressing plates 52.

[0038] The detection mechanism moves radially according to the diameter of the steel ring to be detected and the center of the placing disc 4 as a reference point, and is used for scanning the upper and lower end surfaces of the steel ring to be detected.

[0039] The detection mechanism comprises A sensors 31 and B sensors 32 arranged oppositely, both the two sensors are laser width measuring sensors, and the lower B sensor 32 can scan the lower end surface of the steel ring to be detected through the placing disc 4.

[0040] The A sensors 31 and the B sensors 32 are connected by means of a C-shaped connecting frame 3, the connecting frame 3 is displaced by means of a moving device, a plurality of lightening grooves are arranged on the connecting frame 3, a moving groove 11 is arranged on the surface of the support table 1 and used for the movement of the connecting frame 3, the length of the moving groove 11 extends to the placing mechanism, and the lower B sensor 32 is used for signal emission and reception.

[0041] The mobile device is arranged below the surface of the support table 1, including two guide rails 83 arranged on both sides of the mobile groove 11, and the two sides of the connecting frame 3 are connected with the corresponding guide rail 83 sliding blocks through the mobile frame 8. One side of the mobile frame 8 is driven to move by the B driving device. In this embodiment, the B driving device includes a rotatable lead screw 82 and a nut seat 81 arranged on the same side of the mobile frame 8. The nut seat 81 is threadedly connected with the lead screw 82. By rotating the lead screw 82, the connecting frame 3 is driven to realize radial displacement. The end of the lead screw 82 is connected with a synchronous belt through a motor to realize transmission, that is, a transmission wheel is arranged at the end of the lead screw 82 and the output end of the motor. The two transmission wheels are connected with each other through the synchronous belt.

[0042] In order to make the placement position of the steel ring to be detected concentric with the placement disc 4;

[0043] In this embodiment, the correcting disc 6 is connected to the upper end surface of the fixing frame 62. The correcting disc 6 is provided with scale lines in the form of a ring target. The scale lines correspond to different diameters of the steel ring to be detected. The deformation of the steel ring to be detected can also be directly observed.

[0044] The detecting groove 61 for signal emission and reception of the lower B sensor 32 is arranged on the correcting disc 6. The outer diameter of the correcting disc 6 is spaced apart from the outer diameter of the fixing frame 62. The height difference between the correcting disc 6 and the fixing frame 62 forms a rotating groove for clamping the driving frame 5. The placement disc 4 is made of transparent material to feedback the scale on the correcting disc 6. The transparent material is tempered glass, so that the laser of the lower B sensor 32 can pass through.

[0045] In order to protect the A sensor 31 of the placement mechanism and the detection mechanism, the upper table shell 2 and the protection shell 21 are arranged on the surface of the support table 1 in sequence. The opening for exposing the driving frame 5 of the placement mechanism is arranged on the upper table shell 2. The through groove for signal emission and reception of the upper A sensor 31 is arranged on the end surface of the protection shell 21 facing the placement mechanism.

[0046] The working process of the present embodiment is as follows:

[0047] The steel ring to be detected is placed on the placement disc 4, and is placed according to the corresponding diameter scale on the correcting disc 6, so that the steel ring to be detected is concentrically arranged with the placement disc 4.

[0048] The detection mechanism moves according to the diameter of the steel ring to be detected. The motor of the B driving device drives the lead screw 82 to rotate, so that the connecting frame 3 drives the two sensors to approach or move away from the placement mechanism.

[0049] When the sensor senses the steel ring to be detected, the upper A sensor 31 scans the upper end surface of the steel ring to be detected, and the signal of the lower B sensor 32 passes through the mobile groove 11 and the detecting groove 61 in sequence to scan the lower end surface of the steel ring to be detected.

[0050] A motor of a driving device drives a speed reducer to rotate a driving gear 7, and the teeth 51 engaged with the driving gear 7 drive the driving frame 5 to rotate on the fixed frame 62, thereby driving the steel wire ring to rotate. With the rotation of the steel wire ring, the A sensor 31 and the B sensor 32 scan the coordinates of the inner wall and the outer wall of the steel wire ring, and the scanning data is obtained.

[0051] The scanning data is sent to a processor module, and the information is processed to obtain the inner circumference, the outer circumference, the thickness and the ovality of the steel wire ring.

[0052] The above one or more embodiments of the present application are described in detail, but the content is only the preferred embodiment of the present application, and cannot be considered to limit the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

Claims

1. A non-contact inside diameter gauge, characterized by: The application relates to a steel ring detection device, which comprises a placing mechanism arranged on the surface of a support table (1) and a detection mechanism capable of extending to the placing mechanism. The placing mechanism comprises a placing disc (4) capable of driving the rotation of a steel ring to be detected, and the steel ring to be detected is concentrically arranged on the placing disc (4); the detection mechanism moves radially based on the diameter of the steel ring to be detected and the center of the placing disc (4) as a reference point, and is used for scanning the upper and lower end surfaces of the steel ring to be detected on the placing disc (4).

2. A non-contact inside diameter gauge according to claim 1, wherein: The placing mechanism comprises a fixed frame (62) and a driving frame (5) arranged on the fixed frame (62); the driving frame (5) rotates on the fixed frame (62) by means of A driving device; and the placing disc (4) is horizontally arranged in the driving frame (5).

3. A non-contact inside diameter gauge according to claim 2, wherein: The detection mechanism comprises two upper and lower sensors; the lower sensor can scan the lower end surface of the steel ring to be detected through the placing disc (4); and the two sensors are connected by means of a connecting frame (3).

4. A non-contact ID gauge according to claim 3, wherein: A correction disc (6) is connected to the upper end surface of the fixed frame (62); and the scale on the correction disc (6) can be used for reference of the placing position of the steel ring to be detected on the placing disc (4).

5. A non-contact inside diameter gauge according to claim 4, wherein: The placing disc (4) is made of transparent material and can feedback the scale; and a detection groove (61) for the signal of the lower sensor to pass through is arranged on the correction disc (6).

6. A non-contact inside diameter gauge as defined in claim 4, wherein: The inner side of the driving frame (5) is outwardly protruded to form a clamping table; the outer diameter of the correction disc (6) and the outer diameter of the fixed frame (62) are spaced apart to form a rotating groove for the clamping table to be arranged on.

7. A non-contact ID gauge according to claim 3, wherein: A moving groove (11) for the connecting frame (3) to move is arranged on the surface of the support table (1); the moving groove (11) extends forward to enable the signal of the lower sensor to be emitted and received.

8. A non-contact ID gauge according to claim 7, wherein: The detection mechanism is displaced by means of a moving device, which comprises guide rails (83) arranged on the two sides of the moving groove (11) respectively; the connecting frame (3) is connected to the sliding blocks of the guide rails (83) by means of a moving frame (8); and one side of the moving frame (8) is moved radially by means of B driving device.

9. A non-contact IDM according to claim 5, wherein: An upper table shell (2) for protecting the placing mechanism and a protection shell (21) for protecting the detection mechanism are sequentially arranged on the surface of the support table (1); and a through groove for the signal of the upper sensor to be emitted and received is arranged on the end surface of the protection shell (21) facing the placing mechanism.

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