Grinding and polishing machine capable of monitoring grinding amount through displacement sensor

Abstract

The utility model relates to a polishing and burnishing machine, in particular to a polishing and burnishing machine capable of monitoring the grinding amount through a displacement sensor, which comprises a polishing and burnishing head module, the polishing and burnishing head module comprises a base fixedly connected with a lifting platform, a pressurizing assembly is fixedly arranged on the base, and the pressurizing assembly drives a loading rotating shaft to slide up and down along the vertical direction in a central pressurizing mode. Different from the prior art, a transmitting and receiving part of a grating displacement sensor is fixedly arranged on the base, and the pressure output end of the pressurizing assembly or the upper end of the loading rotating shaft is connected with a grating part of the grating displacement sensor. Compared with the prior art, the utility model has the beneficial technical effects that the grating displacement sensor can be used for accurately measuring the displacement of the loading rotating shaft, so that more accurate grinding amount can be obtained. And the displacement sensor can monitor the displacement change in the grinding process in real time, so that an operator can know the grinding amount in real time, and the machining efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to a grinding and polishing machine, in particular to a grinding and polishing machine which monitors the grinding amount through a displacement sensor. Background Art

[0002] Metallographic grinding and polishing machines are key equipment specially used for preparing metal microscopic specimens. Their main function is to make the surface of metal specimens reach extremely high smoothness through grinding and polishing processes for metallographic analysis. However, in the prior art, there are certain limitations in real-time monitoring of the grinding amount of the specimen. Usually, the grinding amount can only be determined through subsequent measurements after the grinding and polishing machine stops running and the specimen is unloaded. The steps are cumbersome and inefficient, and real-time data during the grinding and polishing process cannot be provided. Therefore, the prior art has deficiencies in real-time monitoring and precise control of the grinding and polishing process, which affects the efficiency and accuracy of metallographic analysis.

[0003] The applicant previously had a Chinese invention patent with publication number CN112223067A, which disclosed a multi-purpose grinding and polishing machine that increases the control of the sample grinding amount. This machine is equipped with a lifting counter on the lifting frame, and the number of teeth turned by the lifting counting gear is used to indirectly reflect the grinding amount. However, in practical applications, especially in the metallographic grinding and polishing process, since the grinding amount is extremely small, usually at the micron level, this method based on the lifting counting gear cannot meet the requirements in terms of accuracy, and the lifting counter cannot obtain accurate measurement data.

[0004] Therefore, although the existing grinding and polishing machines have a certain grinding amount control function, their measurement precision and accuracy still need to be improved in application scenarios such as metallographic grinding and polishing that require extremely high precision. In order to solve this problem, the utility model aims to propose an improved grinding and polishing machine that can accurately measure or monitor the grinding amount of metallographic samples in the center pressure mode, thereby meeting the needs of high-precision grinding and polishing. Utility Model Content

[0005] In order to overcome the technical problem or one of the technical problems existing in the prior art, the utility model provides a grinding and polishing machine that monitors the grinding amount through a displacement sensor, and the technical solution adopted is:

[0006] A grinding and polishing machine that monitors grinding amount through a displacement sensor includes a grinding and polishing head module, wherein the grinding and polishing head module includes a base fixedly connected to a lifting platform, a pressurizing component is fixedly arranged on the base, and the pressurizing component drives a loading shaft to slide up / down in a vertical direction in a central pressurizing mode. Different from the prior art, a transmitting and receiving part of a grating displacement sensor is fixedly arranged on the base, and a pressure output end of the pressurizing component or an upper end of the loading shaft is connected to a grating part of the grating displacement sensor.

[0007] Furthermore, the pressurizing assembly includes a central pressurizing cylinder in the vertical direction of the stroke, the lower end of the central pressurizing cylinder is fixedly connected to the cylinder bracket, the clearance in the cylinder bracket is matched with the movable bracket, the upper end of the movable bracket is fixedly connected to the piston rod of the central pressurizing cylinder, and the lower end of the movable bracket is connected to the upper end of the loading shaft through a bearing; a limiting round pin with an axial direction in the horizontal direction is fixed on the movable bracket, and an oblong hole penetrating through the side wall and with a long direction in the vertical direction is provided on the cylinder bracket, the limiting round pin is located in the oblong hole and can move up and down therein, a large window and a small window are respectively provided at corresponding positions of the cylinder bracket and the side wall of the movable bracket, and a cylinder bracket on one side of the large window is fixed with a small window. A slider with a vertical stroke is provided, the slider slides with a guide rail, a connecting block is fixed to the guide rail, the inner end of the connecting block passes over the large window and the small window and is screwed to a first screw and a horizontal spring plate with an axial direction in the vertical direction, and the outer end is fixed to the grating part of the grating displacement sensor, the nail head of the first screw faces downward, the upper surface of the horizontal spring plate abuts against the limiting round pin, and the lower surface is suspended; the upper end of the loading shaft is fixed to a second screw with an axial direction in the vertical direction, the nail head of the second screw faces upward and an axial countersunk hole is provided, the bottom wall of the axial countersunk hole is provided with a tapered hole, a steel ball is embedded in the tapered hole, and the lower end surface of the first screw enters the axial countersunk hole and abuts against the steel ball.

[0008] Furthermore, the lower end of the loading shaft is directly or indirectly connected to the sample holding disk, and a sample is fixed in each guide hole of the sample holding disk.

[0009] Furthermore, a motor with a vertical axis is fixed on the base, and a driving wheel is fixed on the output shaft of the motor; a driven wheel is rotatably arranged on the base, and belts are wound around the driving wheel and the driven wheel; a roller is fixed at the bottom of the driven wheel, and the center of the roller slides up and down to cooperate with the loading shaft.

[0010] Furthermore, the elastic force stored in the horizontal spring plate ensures that the first screw and the steel ball always maintain contact.

[0011] Furthermore, the initial position of the connection block can be adjusted by adjusting the first screw and / or the second screw.

[0012] Compared with the prior art, the beneficial technical effect of the utility model is that the use of the grating displacement sensor can realize the accurate measurement of the displacement of the loading shaft, thereby obtaining a more accurate grinding amount. The displacement sensor can monitor the displacement changes during the grinding process in real time, so that the operator can know the grinding amount in real time, improving the processing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 yes Figure 1 A partial enlarged view of .

[0015] Figure 3 yes Figure 1 A schematic diagram of the structure from another perspective.

[0016] Figure 4 yes Figure 1 sectional view of .

[0017] Figure 5 It is a structural schematic diagram of the utility model cylinder bracket.

[0018] Figure 6 It is a structural schematic diagram of the movable frame of the utility model.

[0019] Figure 7 The utility model is a structural schematic diagram of a connecting block and some components connected thereto.

[0020] Figure 8 It is a structural schematic diagram of the second screw and the steel ball of the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with specific embodiments and drawings.

[0022] like Figure 1-8 A grinding and polishing machine for monitoring grinding amount through a displacement sensor is shown, including a grinding and polishing head module 100, wherein the grinding and polishing head module 100 includes a base 101 fixedly connected to a lifting platform, a pressurizing component is fixedly arranged on the base 101, and the pressurizing component drives a loading shaft 122 to slide up / down in a vertical direction in a central pressurizing mode. In particular, an emitting and receiving part 1021 of a grating displacement sensor 102 is fixedly arranged on the base 101, and the pressure output end of the pressurizing component or the upper end of the loading shaft 122 is connected to a grating part 1022 of the grating displacement sensor 102.

[0023] Specifically, the pressurizing component includes a central pressurizing cylinder 103 in the vertical direction of the stroke, the lower end of the central pressurizing cylinder 103 is fixedly connected to the cylinder bracket 104, the clearance inside the cylinder bracket 104 is matched with the movable frame 105, the upper end of the movable frame 105 is fixedly connected to the piston rod of the central pressurizing cylinder 103, and the lower end of the movable frame 105 is connected to the upper end of the loading shaft 122 through a bearing; a limiting round pin 1051 with an axial direction in the horizontal direction is fixed on the movable frame 105, and an oblong hole 1041 is provided on the cylinder bracket 104, which passes through its side wall and has a long direction in the vertical direction. The limiting round pin 1051 is located in the oblong hole 1041 and can move up and down therein, and large windows are respectively provided at corresponding positions of the side walls of the cylinder bracket 104 and the movable frame 105 The cylinder bracket 104 on one side of the large window 1042 is fixed with a slider 106 with a vertical stroke, the slider 106 slides with the guide rail 107, the guide rail 107 is fixed with a connecting block 108, the inner end of the connecting block 108 passes over the large window 1042 and the small window 1052 and is screwed with a first screw 109 and a horizontal spring plate 110 with an axial direction in the vertical direction, and the outer end is fixed with the grating part 1022 of the grating displacement sensor 102, the nail head of the first screw 109 faces downward, the upper surface of the horizontal spring plate 110 is in contact with the limiting round pin 1051, and the lower surface is suspended; the elastic force stored in the horizontal spring plate 110 ensures that the first screw 109 and the steel ball 112 always remain in contact. The upper end of the loading shaft 122 is fixedly connected to a second screw 111 with a vertical axial direction. The second screw 111 has a nail head facing upward and an axial countersunk hole 1111 is provided. The bottom wall of the axial countersunk hole 1111 is provided with a tapered hole, in which a steel ball 112 is embedded. The lower end surface of the first screw 109 enters the axial countersunk hole 1111 through a clearance and abuts against the steel ball 112. The initial position of the connecting block 108 can be adjusted by adjusting the first screw 109 and / or the second screw 111.

[0024] The lower end of the loading shaft 122 is connected to the sample holding disk 113. A sample 200 is fixed in each guide hole of the sample holding disk 113.

[0025] A motor 114 with a vertical axis is fixed on the base 101, and a driving wheel 115 is fixed on the output shaft of the motor 114; a driven wheel 117 is rotatably arranged on the base 101, and a belt 118 is wound around the driving wheel 115 and the driven wheel 117; a roller 116 is fixed on the bottom of the driven wheel 117, and the center part of the roller 116 slides up and down to cooperate with the loading shaft 122.

[0026] In the center pressurizing mode, six samples 200 are fixedly mounted on the sample holding disk 113. When the piston rod of the center pressurizing cylinder 103 moves downward, the movable frame 105 is also driven to move downward. The lower end of the movable frame 105 also drives the loading shaft 122 to move downward through the bearing. During this period, the motor 114 drives the roller 116, and the roller 116 drives the loading shaft 122 to rotate, thereby realizing the rotation of the six samples 200 while pressurizing, and starting to grind or polish the samples 200 in combination with the rotation of the grinding and polishing disk.

[0027] When the connecting block 108 moves downward as a whole, the grating part 1022 fixed thereon is also driven to move downward, and the grating displacement sensor 102 records the initial data of grinding or polishing the sample 200. As the grinding and polishing proceed, a part of the sample 200 is ground away. Under the downward pressure of the piston rod of the central pressurizing cylinder 103, the loading shaft 122 and the sample clamping plate 113 thereon move downward by a corresponding distance, and the grating displacement sensor 102 records the real-time data. The difference between the real-time data and the initial data is the grinding amount. When the controller converts the grinding amount into a digital signal that can be displayed digitally, the grinding amount is displayed on the display screen in real time.

[0028] The detailed description of the utility model is based on the embodiments, but it should be understood that the utility model is not limited to these specific embodiments. For those skilled in the art, various modifications or improvements can be made to the utility model based on the contents disclosed in this specification, and all these modifications or improvements should be included in the protection scope of the claims of the utility model.

Claims

1. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor, comprising a grinding and polishing head module (100), wherein the grinding and polishing head module (100) comprises a base (101) fixedly connected to a lifting platform, a pressurizing component is fixedly arranged on the base (101), and the pressurizing component drives a loading shaft (122) to slide vertically up and down in a central pressurizing mode, wherein: The base (101) is fixedly provided with a transmitting and receiving part (1021) of the grating displacement sensor (102), and the pressure output end of the pressurizing component or the upper end of the loading shaft (122) is connected to the grating part (1022) of the grating displacement sensor (102).

2. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 1, characterized in that: The pressurizing assembly comprises a central pressurizing cylinder (103) with a vertical stroke, the lower end of the central pressurizing cylinder (103) being fixedly connected to a cylinder bracket (104), a movable bracket (105) having a clearance fit inside the cylinder bracket (104), the upper end of the movable bracket (105) being fixedly connected to a piston rod of the central pressurizing cylinder (103), the lower end of the movable bracket (105) being transfer-connected to the upper end of a loading shaft (122) via a bearing; a limit circle having an axial direction in the horizontal direction is fixedly provided on the movable bracket (105). The cylinder support (104) is provided with an oblong hole (1041) penetrating through the side wall thereof and having a length in the vertical direction. The limiting round pin (1051) is located in the oblong hole (1041) and can move up and down therein. A large window (1042) and a small window (1052) are respectively provided at corresponding positions of the side walls of the cylinder support (104) and the movable frame (105). A sliding block with a stroke in the vertical direction is fixedly provided on the cylinder support (104) on one side of the large window (1042). The slide block (106) is slidably matched with the guide rail (107), the guide rail (107) is fixed with a connecting block (108), the inner end of the connecting block (108) passes through the large window (1042) and the small window (1052) and is screwed with a first screw (109) with an axial direction in the vertical direction and a horizontal spring plate (110), and the outer end is fixed with a grating part (1022) of the grating displacement sensor (102), the nail head of the first screw (109) faces downward, and the horizontal spring plate The upper surface of (110) is in contact with the limiting round pin (1051), and the lower surface is suspended; the upper end of the loading shaft (122) is fixedly connected to a second screw (111) with an axial direction in the vertical direction, the nail head of the second screw (111) faces upward and is provided with an axial countersunk hole (1111), the bottom wall of the axial countersunk hole (1111) is provided with a tapered hole, and a steel ball (112) is embedded in the tapered hole, and the lower end surface of the first screw (109) enters the axial countersunk hole (1111) through a clearance and then contacts the steel ball (112).

3. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 2, characterized in that: The lower end of the loading shaft (122) is directly or indirectly connected to the sample clamping disk (113), and a sample (200) is fixed in each guide hole of the sample clamping disk (113).

4. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 2, characterized in that: A motor (114) with an axial direction in a vertical direction is fixedly arranged on the base (101), and a driving wheel (115) is fixedly arranged on the output shaft of the motor (114); a driven wheel (117) is rotatably arranged on the base (101), and a belt (118) is wound around the driving wheel (115) and the driven wheel (117); a roller (116) is fixedly arranged at the bottom of the driven wheel (117), and the center portion of the roller (116) slides up and down to cooperate with the loading rotating shaft (122).

5. The grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 2, characterized in that: The elastic force stored in the horizontal spring plate (110) ensures that the first screw (109) and the steel ball (112) always remain in contact with each other.

6. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 2, characterized in that: The initial position of the connection block (108) can be adjusted by adjusting the first screw (109) and / or the second screw (111).

Images