Automatic measuring instrument for main deflection angle and secondary deflection angle of turning tool

Abstract

The automatic measuring instrument for the main deflection angle and secondary deflection angle of a turning tool comprises a supporting part, wherein the supporting part comprises a measuring instrument base, a turning tool clamping seat is fixed on the measuring instrument base, a rectangular column is arranged on the side of the measuring instrument base, the rectangular column is connected to the cylinder seat of a clamping cylinder, a first cylinder is arranged on the side of a swing clamping cylinder, the cylinder seat of the first cylinder is connected to the swing clamping cylinder seat, the movable end of the first cylinder is connected to a positioning plate, the positioning plate positions the turning tool when the turning tool is fixed, and the positioning plate is driven by the first cylinder to move downward to avoid the measuring area during measurement; the present invention can realize automatic measurement of the main deflection angle and secondary deflection angle of the turning tool, digitally read the measured angle and store and access it, the measurement results can be compared in teaching, and the main deflection angle and secondary deflection angle of the turning tool after sharpening can be measured in the factory until the required angle is finally reached.

Description

Technical Field

[0001] The invention relates to the technical field of detection instruments, and in particular to an automatic measuring instrument for the main deflection angle and the secondary deflection angle of a turning tool. Background Art

[0002] The course "Basics of Mechanical Manufacturing Technology" is a required course for engineering students. The course covers highly professional and theoretical content, laying a theoretical foundation for engineering students to work or continue their studies in the future. The tool angle part involved is currently a popular technology in the factory. The quality of workpieces processed by tools at different angles is different and varies greatly. Therefore, the tool angle seriously affects the processing quality, so the factory pays more attention to this technology. At the same time, in the professional course, the experimental class for this part of the content not only provides students with hands-on operation skills, but also deepens students' understanding of textbook knowledge, and realizes zero-distance contact between students and engineering practice.

[0003] The turning tool is the most typical tool among machining tools. It has a strong spatial three-dimensionality and is not easy for students to understand at first. The "turning tool geometric angle measurement" experiment course for this part provides students with space to understand this part of theoretical knowledge and opportunities for hands-on operation. In view of the current experimental bench, due to years of use, there are defects such as corrosion, scratches, and unclear engraving lines. At the same time, the operation of the old experimental bench is still completed manually by the measurer, and automatic measurement is not achieved, which is far from meeting the current undergraduate teaching requirements. Undergraduate teaching lags seriously behind the development of science and technology. At the same time, the experimental bench can only meet the previous teaching purposes and cannot be promoted and applied in enterprises. In view of this, the original development and research of the automatic measurement device for the main deflection angle and secondary deflection angle of the turning tool can be widely used in undergraduate teaching and factories. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic measuring instrument for the main deflection angle and the secondary deflection angle of a turning tool in view of the problems and shortcomings described in the background technology.

[0005] Automatic measuring instrument for main deflection angle and secondary deflection angle of turning tool, including supporting part;

[0006] The supporting part includes a measuring instrument base, a small L-shaped fixing plate is installed on the measuring instrument base, a fixing shell is connected to the small L-shaped fixing plate, a turning tool clamping seat is fixed to the measuring instrument base, a rectangular column is provided on the side of the measuring instrument base, the rectangular column is connected to the cylinder seat of the clamping cylinder, a first cylinder is provided on the side of the swing clamping cylinder, the cylinder seat of the first cylinder is connected to the swing clamping cylinder seat, and the movable end of the first cylinder is connected to the positioning plate, the positioning plate positions the turning tool when the turning tool is fixed, and the first cylinder drives the positioning plate to move downward to avoid the measuring area during measurement;

[0007] The base of the measuring instrument is also equipped with a main deflection angle measuring component and a secondary deflection angle measuring component;

[0008] A vertical plate is installed on the main deflection angle measuring assembly, a guide rail is installed on the vertical plate, a slider is slidably connected to the guide rail, a slide plate is fixed on the slider, a measuring device is installed on the slide plate, a second cylinder is installed on the vertical plate, the second cylinder drives the slide plate to move, and then drives the measuring device to move for measurement;

[0009] The secondary deflection angle measuring assembly has the same structure as the primary deflection angle measuring assembly;

[0010] The display part includes a display screen, a single-chip microcomputer and an analog-to-digital conversion module. The pull-wire sensor is connected to the analog-to-digital conversion module. The digital-to-analog switch and the solenoid valve on the first cylinder, the solenoid valve on the clamping cylinder, and the solenoid valve on the second cylinder are all connected to the single-chip microcomputer. The single-chip microcomputer is connected to the display screen for communication.

[0011] Beneficial effects of the present invention:

[0012] 1. This invention breaks through the shortcomings of existing experimental instruments, applies advanced testing and sensing technology to the development and manufacture of the experimental bench, and realizes the automatic measurement of the main deflection angle and the secondary clearance angle of the turning tool. The measurement result is more accurate than the original experimental bench.

[0013] 2. The present invention adopts a wire sensor for measurement and realizes the positioning and clamping of the tool by swinging and clamping the pressure cylinder.

[0014] 3. The second cylinder drives the moving contact and the stationary contact to achieve contact between the moving contact and the stationary contact and the various measuring surfaces and measuring lines of the tool. This process is completed through automatic control, including the movement and clamping of the components.

[0015] 4. Since the main rake angle and the secondary rake angle of the turning tool are measured in the "base plane", the present invention directly finds out the "base plane" needed for measurement in terms of structural design. There is no need to find out the plane during measurement. The tool can be directly placed on the measuring instrument for measurement, which greatly saves measurement time.

[0016] 5. The present invention uses a display screen to directly read the measured data, thereby improving the measurement accuracy. The analog quantity output by the wire sensor is converted into an analog quantity through the analog-to-digital conversion module in the control box, and the converted digital quantity is input into the single-chip microcomputer, which then inputs the measured result into the display screen for display. This eliminates the process of the measurer estimating the reading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional schematic diagram when the fixed housing is not installed on the present invention.

[0019] Figure 3 It is a schematic diagram of the partial connection between the first measuring component, the second measuring component and the clamping cylinder.

[0020] Figure 4 It is a schematic diagram of the partial connection between the first measuring component, the second measuring component and the clamping cylinder.

[0021] Figure 5 The utility model is a partial connection diagram of a turning tool clamping seat, a turning tool, a rectangular column, a clamping cylinder, a first cylinder and a positioning plate.

[0022] Figure 6 is a three-dimensional schematic diagram of the first measuring component. DETAILED DESCRIPTION

[0023] See also Figures 1 to 6 As shown, the automatic measuring instrument for the main deflection angle and the secondary deflection angle of a turning tool comprises a supporting part;

[0024] The supporting part includes a measuring instrument base 1, which is a plate-shaped structural member, and bottom pillars 2 are installed at the four corners of the measuring instrument base 1. A small L-shaped fixing plate 3 is installed on the measuring instrument base 1, and a fixing housing 4 is bolted to the small L-shaped fixing plate 3. The turning tool clamping seat 5 is a rectangular member, and the turning tool clamping seat 5 is fixed on the measuring instrument base 1, and is used to place the turning tool 6. The position of the turning tool 6 cannot be adjusted after it is placed. A rectangular column 7 is provided on the side of the measuring instrument base 1, and the rectangular column 7 is connected to the cylinder seat of the clamping cylinder 8, that is, supports the clamping cylinder 8. The clamping cylinder 8 is a swing clamping cylinder, and a swinging pressure rod is provided at the front end, which is used to clamp the turning tool 6. A first cylinder 9 is provided on the side of the swing clamping cylinder 8, and a cylinder seat of the first cylinder 9 is connected to the swing clamping cylinder seat. The movable end of the first cylinder 9 is connected to a positioning plate 10. The positioning plate 10 positions the turning tool 6 when the turning tool 6 is fixed. When measuring, the positioning plate 10 is driven by the first cylinder 9 to move downward to avoid the measuring area. When the measuring component is working, it contacts the main and secondary cutting edges of the turning tool for measurement. The positioning plate 10 contacts the tip of the turning tool for positioning.

[0025] The measuring instrument base 1 is also equipped with a main deflection angle measuring component 11 and a secondary deflection angle measuring component 12;

[0026] A vertical plate 110 is installed on the main deflection angle measuring assembly 11, a guide rail 111 is installed on the vertical plate 110, a slider 112 is slidably connected to the guide rail 111, a slide plate 113 is fixed on the slide plate 112, a measuring device 114 is installed on the slide plate 113, and a second cylinder 115 is installed on the vertical plate 110, the second cylinder 115 drives the slide plate 113 to move, and then drives the measuring device 114 to move for measurement;

[0027] The secondary deflection angle measuring assembly 12 has the same structure as the primary deflection angle measuring assembly 11;

[0028] The display part includes a display screen, a single-chip microcomputer and an analog-to-digital conversion module. The wire sensor 1142 is connected to the analog-to-digital conversion module. The digital-to-analog switch and the solenoid valve on the first cylinder 9, the solenoid valve on the pressing cylinder 8, and the solenoid valve on the second cylinder 115 are all connected to the single-chip microcomputer. The single-chip microcomputer is connected to the display screen in communication.

[0029] The display screen is mounted on the fixed housing 4, and the display screen can also be connected to a computer via a data cable, and then the measurement data can be displayed through the computer. At the same time, the measurement results can also be stored in the computer and the measured data can be compared.

[0030] Furthermore, the measuring device 114 includes a moving contact 1140, a stationary contact 1141 and a pull-wire sensor 1142, the stationary contact 1141 and the pull-wire sensor 1142 are fixedly connected to the slide plate 113, the moving contact 1140 is slidably connected to the slide plate 113, and the moving contact 1140 is fixedly connected to the pull-wire end of the pull-wire sensor 1142.

[0031] Working process and principle:

[0032] The whole measuring process is controlled by four cylinders. One of the clamping cylinders 8 controls the swinging pressure rod to ensure that the swinging pressure rod presses the turning tool 6 to prevent the turning tool 6 from swinging during measurement. The other two second cylinders 115 respectively control the movement of the main deflection angle measuring assembly 11 and the secondary deflection angle measuring assembly 12, so that the moving contact 1140 and the static contact 1141 contact the main and secondary cutting edges of the turning tool to achieve the measurement task. The first cylinder 9 is used to move the positioning plate 10 up and down.

[0033] How to measure: The measurement of the main and secondary deflection angles is completed at the same time. The specific measurement principle is as follows:

[0034] (1) Measurement of the main deflection angle

[0035] The turning tool 6 is placed on the turning tool clamping seat 5, the turning tool 6 tip contacts the positioning plate 10, the left side of the turning tool 6 contacts the vertical surface of the tool clamping seat 5, and the pressing cylinder 8 pushes the pressing plate to press the body of the turning tool 6. When the start button is pressed, the positioning plate 10 moves away from the measuring area driven by the first cylinder 9, and the main deflection angle measuring component 11 contacts the main cutting edge driven by the second cylinder 115, completing the measurement. The specific value is displayed on the display screen. The principle is that the main deflection angle measuring component 11 is in contact with the main cutting edge, the vertical distance from the tool tip to the main deflection angle measuring component 11 is measured by the wire sensor 1142, the extended distance from the tool tip to the main deflection angle measuring component 11 is measured by the wire sensor 1142, and the distance from the tool tip along the main cutting edge to the main deflection angle measuring component 11 is measured by the wire sensor. These three distances form a right triangle. The size of the main deflection angle can be calculated by the Pythagorean theorem. If a right-angled side of the turning tool 6 is known, the angle of the turning tool 6 is measured by the cooperation of the moving contact 1140 and the wire sensor 1142. Similarly, the angle of the secondary deflection angle is also obtained by this method.

[0036] (2) Measurement of secondary deflection angle

[0037] The turning tool 6 is placed on the turning tool clamping seat 5, the turning tool 6 tip contacts the positioning plate 10, the left side of the turning tool 6 contacts the vertical surface of the tool clamping seat 5, and the pressing cylinder 8 pushes the pressing plate to press the turning tool 6 body. Press the start button, the positioning plate 10 is driven by the first cylinder 9 to move away from the measurement area, and the secondary deflection angle measurement component 12 is driven by the second cylinder 115 to contact the secondary cutting edge to complete the measurement. The specific value is displayed on the display.

[0038] The measured results can be stored on the computer, and the data measured by ordinary instruments can be compared with the data obtained by automatic measurement on the computer to analyze the measurement results. Draw the measurement angle diagram.

[0039] The present invention is mainly aimed at the specific structure of the measurement research of the main deflection angle and the secondary deflection angle of the turning tool.

[0040] If other angles need to be measured, the currently designed structure can be adjusted. Therefore, the present invention is simple, flexible, and has strong versatility, and is suitable for undergraduate teaching and practical applications in factories and enterprises.

Claims

1. Automatic measuring instrument for main deflection angle and secondary deflection angle of turning tool, characterized by: The support part comprises a measuring instrument base (1), a small L-shaped fixing plate (3) is installed on the measuring instrument base (1), a fixing shell (4) is connected to the small L-shaped fixing plate (3), a turning tool clamping seat (5) is fixed to the measuring instrument base (1), a rectangular column (7) is provided on the side of the measuring instrument base (1), the rectangular column (7) is connected to the cylinder seat of the pressing cylinder (8), a first cylinder (9) is provided on the side of the pressing cylinder (8), the cylinder seat of the first cylinder (9) is connected to the pressing cylinder seat, and the movable end of the first cylinder (9) is connected to the positioning plate (10), the positioning plate (10) positions the turning tool (6) when the turning tool (6) is fixed, and the first cylinder (9) drives the positioning plate (10) to move downward to avoid the measuring area during measurement; A main deflection angle measuring component (11) and a secondary deflection angle measuring component (12) are also mounted on the measuring instrument base (1); A vertical plate (110) is mounted on the main deflection angle measuring assembly (11), a guide rail (111) is mounted on the vertical plate (110), a slider (112) is slidably connected to the guide rail (111), a slide plate (113) is fixed on the slide plate (112), a measuring device (114) is mounted on the slide plate (113), a second cylinder (115) is mounted on the vertical plate (110), and the second cylinder (115) drives the slide plate (113) to move, thereby driving the measuring device (114) to move for measurement; The secondary deflection angle measuring assembly (12) has the same structure as the primary deflection angle measuring assembly (11); The display part comprises a display screen, a single-chip microcomputer and an analog-to-digital conversion module, the wire pull sensor (1142) is connected to the analog-to-digital conversion module, the digital-to-analog switch and the solenoid valve on the first cylinder (9), the solenoid valve on the pressing cylinder (8), and the solenoid valve on the second cylinder (115) are all connected to the single-chip microcomputer, and the single-chip microcomputer is connected to the display screen for communication; The measuring device (114) comprises a moving contact (1140), a stationary contact (1141) and a wire-pulling sensor (1142); the stationary contact (1141) and the wire-pulling sensor (1142) are fixedly connected to the slide plate (113); the moving contact (1140) is slidably connected to the slide plate (113); and the moving contact (1140) is fixedly connected to the wire-pulling end of the wire-pulling sensor (1142); The display screen is mounted on the fixed housing (4), and the display screen is connected to the computer via a data cable; Bottom supports (2) are installed at the four corners of the measuring instrument base (1).

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