CN111595250A - A bar diameter detection device and its control system - Google Patents

Abstract

The present invention provides a bar diameter detection device and a detection system thereof, including a workbench, a laser generator and a laser receiver are arranged on the workbench, and a laser generator and a laser receiver are arranged between the laser generator and the laser receiver. The positioning mechanism; the detection system includes a control chip, a laser emission module, a laser receiving and receiving module and a display module. The device determines the diameter of the bar material through the length of the laser receiver blocked by the bar material through the laser equipment, improving the detection accuracy, and at the same time, The positioning mechanism is provided, which can effectively prevent the problem of the detection accuracy being lowered due to position deviation during the detection of the bar material.

Description

A bar diameter detection device and its control system

technical field

The invention relates to the field of metering equipment, in particular to a bar diameter detection device and a control system thereof.

Background technique

Among some measuring parts, there are some rod-shaped parts. After long-term use, it is necessary to test and calibrate whether their diameter meets the standard. Since the diameter of the rod-shaped parts is about 0.3-0.5cm, the detection accuracy of ordinary rulers is low. , usually the method of laser detection is used. For example, the invention with the patent announcement number: CN207335633U discloses a bar diameter detection device, which is also detected by laser, but because the bar itself is a small structure, the detection and positioning If there is no accurate vehicle, there will be skew that cannot be seen by the naked eye, which will eventually result in a large error in the detection structure.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention proposes a bar diameter detection device, including a workbench, on which a laser generator and a laser receiver are arranged, and between the laser generator and the laser receiver A positioning mechanism is provided; the positioning mechanism includes a vertical frame, a support frame is arranged on the vertical frame, a carrier is slidably connected to the support frame, and a vertical groove is arranged in the center of the carrier, and the vertical frame is Two sets of positioning blocks are respectively provided on both sides of the groove, the side of the positioning block close to the vertical groove is provided with a wedge-shaped surface, the wedge-shaped surface is provided with an installation groove, and a positioning rod is rotatably connected in the installation groove, so the A section of the positioning rod extending from the vertical groove is provided with a spherical crown-shaped protrusion.

Preferably, the support frame is provided with a chute, and the side wall of the chute is provided with two sliding bars.

Preferably, the lower portion of the carrier is provided with an engaging block, the lower portion of the engaging block is provided with an annular portion, and the upper portion of the annular portion is provided with a concave arc-shaped groove, and the arc-shaped groove is matched with the sliding rod.

Preferably, the side wall of the carrier is provided with a moving mechanism, and the moving mechanism includes a rack on the support frame, a positioning ring fixed on the side wall of the support frame, and a rotating rod passes through the positioning ring, The end of the rotating rod is provided with a gear, and the gear meshes with the rack.

Preferably, a universal joint is provided in the center of the positioning rod and the installation groove.

A bar diameter detection system includes a control chip, a laser emitting module, a laser receiving and receiving module, and a

Displays the module and includes the following steps:

S1: The XY coordinate system is established in the laser receiver through the system;

S2: After the laser emitted by the laser transmitter is blocked by the bar material, there is a blocked pattern in the laser receiver, and then the distance is measured by the pattern;

S3: Taking the X-axis as the benchmark, in the process of moving the bar, sampling in the direction of the Y-axis every 0.1s, and recording two values respectively, the Y-axis data A1, A2, A3... An and the blocking part in the lower part of the shielding part The upper Y-axis data, record data B1, B2, B3...Bn;

S4: Calculate the value of Bn-An, and set the standard value for comparison. If there is a difference in the data, the judgment is wrong.

Preferably, the display module is driven by a control chip to display the difference data in S4.

The bar diameter detection device proposed by the present invention has the following beneficial effects: the device determines the diameter of the bar material through the length of the laser receiver blocked by the bar material through the laser equipment, so as to improve the detection accuracy, and at the same time, a positioning mechanism is provided, which can It can effectively prevent the problem that the detection accuracy is lowered due to position deviation during the detection of the bar.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments.

Fig. 1 is the side schematic diagram of the present invention;

Fig. 2 is the sectional view of the vertical frame of the present invention;

Fig. 3 is the schematic diagram of the support frame of the present invention;

Among them, 1, workbench; 2, laser generator; 3, laser receiver; 4, vertical frame; 5, support frame; 6, vertical groove; 7, positioning block; 8, wedge surface; 9, positioning rod; 10, spherical crown protrusion; 11, sliding rod; 12, engaging block; 13, annular part; 14, rack; 15, positioning ring; 16, rotating rod; 17, gear; 18, carrier; 19, gimbal.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in FIG. 1, the present invention proposes a bar diameter detection device, including a workbench 1, on which a laser generator 2 and a laser receiver 3 are purchased equipment, and the laser receiver 3 is used for Receive the laser light emitted by the generator and convert it into a numerical value through software to display on the display. The principle is not the invention of this application, so it will not be repeated. The bar material is set between the two, and the bar material will block the path of the laser. The blocked length on the receiver is the diameter of the bar, and the diameter of the bar can be determined by observing the value on the display during detection. In order to further ensure the accuracy of detection, the laser generator 2 and the laser receiver There is a positioning mechanism between 3.

The positioning mechanism includes a vertical frame 4. As shown in FIG. 2, the vertical frame 4 is provided with a support frame 5. The support frame 5 is slidably connected with a carrier 18, and the upper center of the carrier 18 is provided with a support frame 5. Vertical slot 6, two sets of positioning blocks 7 are respectively provided on both sides of the vertical slot 6, the side of the positioning block 7 close to the vertical slot 6 is provided with a wedge-shaped surface 8, and the wedge-shaped surface 8 is provided with a mounting groove , a positioning rod 9 is rotatably connected in the installation groove, a section of the positioning rod 9 extending from the vertical groove 6 is provided with a spherical crown-shaped protrusion 10, and the positioning rod can also be connected to the universal joint 19 in the middle and connected to the installation groove In this way, the positioning rod can be adjusted to different angles, which is suitable for the positioning of bars of different sizes. After the bars are placed, the bars on both sides can fall at the bottom of the positioning rod 9, and the positioning rod 9 can limit the position of the bar. It is ensured that the bar is not skewed, and at the same time, due to the spherical crown-shaped protrusion 10 arranged at the bottom, the outer wall of the spherical crown can limit the bar, and will not be skewed during the detection process, so as to reduce the detection accuracy.

In addition, as shown in FIG. 3 , since the middle part of the bar is the actual use section and needs to be detected, the entire carrier 18 needs to be moved so that the laser can detect the continuous position. The lower part of the carrier 18 is provided with an engaging block 12 , the lower part of the engaging block 12 is provided with an annular part 13, the upper part of the annular part 13 is provided with a concave arc-shaped groove, the arc-shaped groove is matched with the sliding rod 11, and the supporting frame 5 is provided with a sliding The side wall of the chute is provided with two sliding bars 11. By manually pushing the carrier 18, the engaging block 12 at the lower part of the carrier 18 and the sliding bar 11 can cooperate more closely, and the sliding of the sliding bar 11 is extremely smooth. , reducing the positional deviation caused by the loose fit, resulting in detection errors, and in order to prevent the manual pushing speed from being too fast and affecting the data observation, a moving mechanism is provided on the side wall of the stage 18, and the moving mechanism includes a moving mechanism located on the support frame 5 The rack 14, the positioning ring 15 fixed on the side wall of the support frame 5, the positioning ring 15 has a rotating rod 16 passing through it, the end of the rotating rod 16 is provided with a gear 17, and the gear 17 is connected to the The rack 14 is meshed. By rotating the rotating rod 16, the gear 17 of the rotating rod 16 and the rack 14 can engage and drive, and can drive the entire carrier 18 to move along the direction of the rack 14. The cooperation of the gear 17 and the rack 14, Ensure stable movement speed and improve detection accuracy.

A bar diameter detection system includes a control chip, a laser emission module, a laser receiving and receiving module and a display module, the input end of the control chip is connected with the laser receiving module, and is used for or image information on the laser receiving module, the display module Driven by the control chip to display the diameter data of the bar. and includes the following steps:

S1: The XY coordinate system is established in the laser receiver through the system;

S2: After the laser emitted by the laser transmitter is blocked by the bar material, there is a blocked pattern in the laser receiver, and then the distance is measured by the pattern;

S3: The distance measurement method is: taking the X axis as the benchmark, in the process of moving the bar, sampling in the direction of the Y axis every 0.1s, recording two values respectively, the Y axis data A1, A2, A3... ...An and the Y-axis data of the upper part of the shielding part, record the data B1, B2, B3...Bn; and display the data on the display screen.

S4: Calculate the value of Bn-An, and set the standard value for comparison. If there is a difference in the data, the judgment is wrong.

Through the above method, the diameter of the moving bar material shaft can be monitored in real time, and through laser detection, the efficiency is high and the accuracy is high.

Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. a bar diameter detection device, is characterized in that, comprises workbench, is provided with laser generator and laser receiver on described workbench, is provided with positioning mechanism between described laser generator and described laser receiver The positioning mechanism includes a vertical frame, a support frame is arranged on the vertical frame, a carrier is slidably connected to the support frame, and a vertical groove is arranged in the center of the carrier, and two sides of the vertical groove are respectively There are two sets of positioning blocks, the side of the positioning block close to the vertical slot is provided with a wedge-shaped surface, the wedge-shaped surface is provided with a mounting groove, and a positioning rod is fixed in the mounting groove, and the positioning rod extends over the One end of the vertical groove is provided with a spherical crown-shaped protrusion. 2 . The bar diameter detection device according to claim 1 , wherein the support frame is provided with a chute, and the side wall of the chute is provided with two sliding bars. 3 . 3 . The bar diameter detection device according to claim 2 , wherein the lower part of the carrier is provided with an engaging block, the lower part of the engaging block is provided with an annular part, and the upper part of the annular part has an indentation. 4 . The arc-shaped groove is matched with the sliding rod. 4 . The bar diameter detection device according to claim 1 , wherein the side wall of the carrier is provided with a moving mechanism, and the moving mechanism comprises a rack located on the support frame and fixed on the side of the support frame. 5 . The positioning ring of the wall has a rotating rod passing through the positioning ring, the end of the rotating rod is provided with a gear, and the gear is engaged with the rack. 5 . The bar diameter detection device according to claim 1 , wherein a universal joint is provided in the center of the positioning rod and the installation groove. 6 . 6. A bar diameter detection system, comprising a control chip, a laser emission module, a laser receiving module and a display module, and comprising the following steps: S1: The XY coordinate system is established in the laser receiver through the system; S2: After the laser emitted by the laser transmitter is blocked by the bar material, there is a blocked pattern in the laser receiver, and then the distance is measured by the pattern; S3: Taking the X-axis as the benchmark, in the process of moving the bar, sampling in the direction of the Y-axis every 0.1s, and recording two values respectively, the Y-axis data A1, A2, A3... An and the blocking part in the lower part of the shielding part The upper Y-axis data, record data B1, B2, B3...Bn; S4: Calculate the value of Bn-An, and set the standard value for comparison. If there is a difference in the data, the judgment is wrong. 7 . The bar diameter detection device according to claim 6 , wherein the display module is driven by a control chip to display the difference data in S4 .

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