Device for measuring inner diameter of deep hole of cylindrical part

Abstract

The utility model discloses a device for measuring the inner diameter of a deep hole of a cylindrical part. The device comprises a measuring head, a measuring rod, an axial distance measuring part, a data transmission cable, a display device and a laser displacement sensor, the measuring rod and the axial distance measuring part are located on the two sides of the measuring head respectively, and the axial distance measuring part is connected with the display device through a data transmission cable. The measuring head comprises a body, a supporting block, a guide positioning column, a mounting bracket, a sliding block, a guide rail, a supporting column, a laser displacement sensor and a spring, the rear part of the mounting bracket is connected with the sliding block, the laser displacement sensor is fixed at the front part of the mounting bracket, and the laser displacement sensor is connected with a display device through a data transmission cable; the bottom end of the guide positioning column is connected to the third threaded hole, one end of the spring is connected with the guide positioning column, and the other end is connected with a pressing rod. According to the utility model, accurate measurement of the inner diameter of the deep hole of the cylindrical part can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of deep hole inner diameter detection technology, specifically relating to a device for measuring the inner diameter of deep holes in cylindrical parts. Background Technology

[0002] During the production and processing of cylindrical parts, it is necessary to inspect the inner diameter at different axial positions of the cylindrical parts to confirm whether the processing dimensions are qualified, thereby ensuring the reliability of product quality.

[0003] However, measuring instruments have difficulty reaching the deep holes of cylindrical parts, making it difficult to measure the inner diameter of deep holes and ensuring measurement accuracy. Utility Model Content

[0004] The purpose of this utility model is to provide a device for measuring the inner diameter of deep holes in cylindrical parts, which can accurately measure the inner diameter of deep holes in cylindrical parts.

[0005] The technical solution is as follows:

[0006] A device for measuring the inner diameter of deep holes in cylindrical parts includes: a measuring head, a measuring rod, an axial ranging component, a data transmission cable, a display device, and a laser displacement sensor. The measuring rod and the axial ranging component are located on opposite sides of the measuring head, and the axial ranging component is connected to the display device via the data transmission cable. The measuring head includes: a body, support blocks, a guide positioning post, a mounting bracket, a slider, a guide rail, a support post, a laser displacement sensor, and a spring. Two support blocks are connected to both ends of the body. The support blocks are circular in shape, and their outer walls have a first threaded hole. One support block has a measuring hole. The support column is installed on the first threaded hole; a through hole is opened in the middle of the body, and a second threaded hole is provided below the through hole. The guide rail is fixed on the second threaded hole with screws, and the slider is installed on the guide rail; the upper part of the mounting bracket is provided with a mounting head, and the mounting head is provided with a third threaded hole. The mounting head is inserted into the through hole. The rear part of the mounting bracket is connected to the slider. The laser displacement sensor is fixed on the front part of the mounting bracket. The laser displacement sensor is connected to the display device through a data transmission cable; the bottom end of the guide positioning column is connected to the third threaded hole, one end of the spring is connected to the guide positioning column, and the other end is connected to the pressure rod.

[0007] Furthermore, a bracket through hole is provided at the bottom of the mounting bracket, and the slider is connected to the mounting bracket with screws.

[0008] Furthermore, a spherical groove is provided at the top of the support column, and a ball bearing is installed in the spherical groove.

[0009] This utility model has the following advantages compared with the prior art:

[0010] This invention combines the design and processing of mechanical tooling with a laser displacement sensor to achieve accurate measurement of the inner diameter of deep holes in cylindrical parts.

[0011] This invention combines a laser displacement sensor, featuring high precision, wide range, and low latency, enabling accurate measurement of different axial distances within the inner diameter of cylindrical parts.

[0012] This device can measure the inner diameter using only a single laser displacement sensor. Compared to dual-sensor inner diameter measuring instruments, it reduces human error during installation, saves on the procurement costs of electrical components, and increases the measurement range.

[0013] This device, through the processing of different support blocks, can realize the measurement of the inner diameter of various deep-hole parts, and has great potential for widespread application. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the deep hole inner diameter measuring device for cylindrical parts according to this utility model.

[0015] Figure 2 This is a schematic diagram of the measuring head in this utility model;

[0016] Figure 3 yes Figure 1 Top view;

[0017] Figure 4 This is a cross-sectional view along direction AA;

[0018] Figure 5 This is a cross-sectional view along the BB direction;

[0019] Figure 6 This is a schematic diagram of the support column in this utility model. Detailed Implementation

[0020] The following description fully illustrates specific embodiments of the present invention to enable those skilled in the art to practice and reproduce them.

[0021] like Figure 1 The diagram shown is a structural schematic of the deep hole inner diameter measuring device for cylindrical parts according to this utility model.

[0022] A device for measuring the inner diameter of deep holes in cylindrical parts includes: a measuring head 1, a measuring rod 2, an axial distance measuring component 3, a data transmission cable 4, a display device 5, and a laser displacement sensor; the measuring rod 2 is located on the side of the measuring head 1, the axial distance measuring component 3 is located on the other side of the measuring head 1, the axial distance measuring component 3 is connected to the display device 5 through the data transmission cable 4, and the measuring head 1 is equipped with a laser displacement sensor, which is connected to the display device 5 through the data transmission cable 4.

[0023] like Figure 2 The diagram shown is a structural schematic of the measuring head 1 in this utility model; as shown... Figure 3As shown, is Figure 1 A top view; such as Figure 4 The image shown is a cross-sectional view along direction AA; as shown... Figure 5 The image shown is a cross-sectional view along the BB direction; as shown... Figure 6 The diagram shown is a structural schematic of the support column 16 in this utility model.

[0024] The measuring head 1 includes: a body 11, a support block 12, a guide positioning post, a mounting bracket 14, a slider, a guide rail, a support post 16, a laser displacement sensor, and a spring. Two support blocks 12 are respectively connected to both ends of the body 11. The support blocks 12 are circular in shape, and the outer wall of the support block 12 is provided with a first threaded hole. One support block 12 is provided with a measuring hole 15. The support post 16 is installed on the first threaded hole. A Ф20mm through hole 13 is opened in the middle of the body 11. The through hole 13 is 30mm long. A Ф16.5mm second threaded hole is located directly below the through hole 13. The second threaded hole is 3mm long. The guide rail is fixed to the second threaded hole with screws, and the slider is installed on the guide rail. The upper part of the mounting bracket 14 is provided with a mounting head. The mounting head is provided with a third threaded hole and is inserted into the through hole 13. The rear part of the mounting bracket 14 is connected to the slider. The bottom end of the guide positioning post 13 is connected to the third threaded hole. One end of the spring is connected to the guide positioning post 13, and the other end is connected to a pressure rod. The laser displacement sensor is fixed to the front of the mounting bracket 14.

[0025] The mounting bracket 14 has a bracket through hole at the bottom, and the slider is connected to the mounting bracket 14 with screws.

[0026] The support column has a spherical groove at its top for mounting ball bearings. The measuring rod 2 is used to push the measuring head to the specific detection position.

[0027] The axial distance measuring component 3 is used to measure the axial distance position of the measuring head 1 and is a laser distance measuring sensor. The inner diameter of the standard ring gauge is consistent with the inner diameter of the cylindrical part to be measured and is used for calibration of the detection device. The data transmission cable 4 is used to transmit measurement data and power the laser displacement sensor and the laser distance measuring sensor. The display device 5 is used to display the diameter measurement data and the distance measurement data.

[0028] The usage method is as follows:

[0029] 1. Before measurement, connect the axial distance measuring component 3 and the laser displacement sensor to the display device 5 via the data transmission cable 4, turn on the power, and check whether the display device 5 is normal.

[0030] 2. Press down the pressure rod on the measuring head 1 to compress the spring, place the measuring head 1 into the standard ring gauge, and calibrate the measurement of the deep hole inner diameter of the cylindrical part 6 according to the nominal value of the standard ring gauge.

[0031] 3. Remove measuring head 1 from the standard ring gauge, press the pressure rod on measuring head 1 to compress the spring, place measuring head 1 into the cylindrical part 6, place axial distance measuring component 3 at the other end of cylindrical part 6, press the start measurement button on display device 5, and zero the laser distance measurement.

[0032] 4. The laser displacement sensor inside the measuring head 1 obtains the inner diameter measurement value. The axial distance measuring component 3 emits a laser to irradiate the measuring head 1. The measuring head 1 is pushed by the measuring rod 2. The axial distance window value of the display device 5 is observed. According to the detection requirements, the measuring rod 2 is pushed to move the measuring head to the target point. The diameter measurement window value of the display device 5 is observed. At this time, the indicated value is the inner diameter measurement value of the cylindrical part 6 at that point.

[0033] 5. Repeat step 4 until the inner diameter of all target points of cylindrical parts 6 is detected.

[0034] The terminology used in this invention is descriptive and exemplary, and not restrictive. Since this invention can be embodied in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A device for measuring the inner diameter of a deep hole in a cylindrical part, characterized in that, include: Measuring head, measuring rod, axial distance measuring component, data transmission cable, display device, laser displacement sensor; The measuring rod and the axial distance measuring component are located on both sides of the measuring head. The axial distance measuring component is connected to the display device through a data transmission cable. The measuring head includes: body, support block, guide positioning column, mounting bracket, slider, guide rail, support column, laser displacement sensor, and spring. Two support blocks are connected to both ends of the main body. The support blocks are circular in shape and have a first threaded hole on their outer wall. One support block has a measuring hole, and a support column is installed on the first threaded hole. A through hole is opened in the middle of the main body, and a second threaded hole is provided below the through hole. The guide rail is fixed to the second threaded hole with screws, and the slider is installed on the guide rail. A mounting head is provided on the upper part of the mounting bracket, and the mounting head has a third threaded hole. The mounting head is inserted into the through hole. The slider is connected to the rear of the mounting bracket. The laser displacement sensor is fixed to the front of the mounting bracket and is connected to the display device through a data transmission cable. The bottom end of the guide positioning column is connected to the third threaded hole. One end of the spring is connected to the guide positioning column, and the other end is connected to the pressure rod.

2. The deep hole inner diameter measuring device for cylindrical parts as described in claim 1, characterized in that, The mounting bracket has a through hole at the bottom, and the slider is connected to the mounting bracket with screws.

3. The deep hole inner diameter measuring device for cylindrical parts as described in claim 1, characterized in that, The top of the support column is provided with a spherical groove, and a ball bearing is installed in the spherical groove.

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