Grinding and polishing machine for monitoring the grinding amount by displacement sensor

Abstract

The present application relates to polishing machine, specifically a kind of polishing machine for monitoring grinding amount by displacement sensor, including polishing head module, the polishing head module includes the base with lifting platform fixed connection, base is fixed with pressurizing component, pressurizing component drives load shaft to slide in vertical direction up / down in center pressurizing mode, different from prior art, the emission and receiving part of grating displacement sensor is fixed on base, the grating part of grating displacement sensor is connected to the pressure output end of pressurizing component or the upper end of load shaft.Compared with prior art, the beneficial technical effects of the present application are: using grating displacement sensor can realize the accurate measurement of load shaft displacement, so as to obtain more accurate grinding amount.Displacement sensor can monitor displacement change in real time during grinding process, so that operator can know grinding amount in real time, improve processing efficiency and quality.

Description

Technical Field

[0001] This invention relates to a grinding and polishing machine, specifically a grinding and polishing machine that monitors the amount of grinding by means of a displacement sensor. Background Technology

[0002] Metallographic grinding and polishing machines are crucial equipment specifically designed for preparing metal microscopic samples. Their primary function is to achieve extremely high surface smoothness of metal samples through grinding and polishing processes, facilitating metallographic analysis. However, current technologies have limitations in real-time monitoring of sample grinding amounts. Typically, the grinding amount can only be determined through subsequent measurements after the grinding and polishing machine has stopped operating and the sample has been removed. This process is cumbersome, inefficient, and cannot provide real-time data during the grinding and polishing process. Therefore, existing technologies are insufficient in real-time monitoring and precise control of the grinding and polishing process, affecting the efficiency and accuracy of metallographic analysis.

[0003] The applicant previously held a Chinese invention patent with publication number CN112223067A, which disclosed a multi-purpose grinding and polishing machine for increasing the control of sample grinding amount. This machine features a lifting counter on the lifting frame, using the number of teeth rotated by the lifting counting gear to indirectly reflect the grinding amount. However, in practical applications, especially in metallographic grinding and polishing processes, because the grinding amount is extremely small, typically at the micrometer level, this method based on the lifting counting gear cannot meet the accuracy requirements, and the lifting counter cannot obtain precise measurement data.

[0004] Therefore, although existing grinding and polishing machines have certain grinding amount control functions, their measurement accuracy and precision still need to be improved in applications such as metallographic grinding and polishing where extremely high precision is required. To address this issue, this invention aims to propose an improved grinding and polishing machine capable of accurately measuring or monitoring the grinding amount of metallographic samples in a central pressure mode, thereby meeting the needs of high-precision grinding and polishing. Summary of the Invention

[0005] To overcome the technical problems or one of the technical problems existing in the prior art, the present invention provides a grinding and polishing machine that monitors the grinding amount through a displacement sensor. The technical solution adopted is as follows: A grinding and polishing machine that monitors grinding amount by displacement sensor includes a grinding and polishing head module. The grinding and polishing head module includes a base fixedly connected to a lifting platform. A pressurizing component is fixedly mounted on the base. In the center pressurizing mode, the pressurizing component drives the loading shaft to slide vertically up / down. Unlike the prior art, the base is fixedly mounted with the transmitting and receiving parts of a grating displacement sensor. The pressure output end of the pressurizing component or the upper end of the loading shaft is connected to the grating part of the grating displacement sensor.

[0006] Furthermore, the pressurizing assembly includes a central pressurizing cylinder with a vertical stroke. The lower end of the central pressurizing cylinder is fixedly connected to a cylinder bracket. A movable frame is fitted within the cylinder bracket with clearance. The upper end of the movable frame is fixedly connected to the piston rod of the central pressurizing cylinder. The lower end of the movable frame is rotatably connected to the upper end of the loading shaft via a bearing. A horizontally oriented limiting pin is fixed on the movable frame. An elongated hole, penetrating its sidewall and extending vertically, is opened on the cylinder bracket. The limiting pin is located within the elongated hole and can move up and down within it. Large and small windows are respectively opened at corresponding positions on the sidewalls of the cylinder bracket and the movable frame. A large window is fixed on the cylinder bracket on the side of the large window. A slider with a vertical stroke is slidably coupled to a guide rail. A connecting block is fixed to the guide rail. The inner end of the connecting block passes through the large and small windows and is screwed with a first screw with a vertical axis and a horizontal spring plate. The outer end is fixed with the grating part of the grating displacement sensor. The head of the first screw faces downward. The upper surface of the horizontal spring plate abuts against the limiting pin, and the lower surface is suspended. The upper end of the loading shaft is fixed with a second screw with a vertical axis. The head of the second screw faces upward and has an axial countersunk hole. A conical hole is formed in the bottom wall of the axial countersunk hole. A steel ball is embedded in the conical hole. The lower end face of the first screw enters the axial countersunk hole and abuts against the steel ball.

[0007] Furthermore, the lower end of the loading shaft is directly or indirectly connected to the sample clamping plate, and a sample is fixed in each guide hole of the sample clamping plate.

[0008] Furthermore, a motor with a vertical axis is fixed on the base, and a drive wheel is fixed on the output shaft of the motor; a driven wheel is rotated on the base, and belts are wound around the drive 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 in cooperation with the loading shaft.

[0009] Furthermore, the spring force stored in the horizontal spring plate ensures that the first screw and the steel ball always remain in contact.

[0010] Furthermore, the initial position of the connecting block can be adjusted by adjusting the first screw and / or the second screw.

[0011] Compared with existing technologies, the beneficial technical effects of this invention are: the use of a grating displacement sensor enables precise measurement of the displacement of the loaded shaft, thereby obtaining a more accurate grinding amount. The displacement sensor can monitor displacement changes during the grinding process in real time, allowing the operator to know the grinding amount in real time, improving processing efficiency and quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0014] Figure 3 yes Figure 1 A structural diagram from another perspective.

[0015] Figure 4 yes Figure 1 A sectional view.

[0016] Figure 5 This is a schematic diagram of the cylinder bracket of the present invention.

[0017] Figure 6 This is a schematic diagram of the structure of the movable frame of the present invention.

[0018] Figure 7 This is a structural schematic diagram of the connecting block and the components connected to it in this invention.

[0019] Figure 8 This is a schematic diagram of the structure of the second screw and steel ball of the present invention. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0021] like Figure 1-8 The grinding and polishing machine shown includes a grinding and polishing head module 100, which includes a base 101 fixedly connected to a lifting platform. A pressurizing component is fixedly mounted on the base 101. In the center pressurizing mode, the pressurizing component drives the loading shaft 122 to slide vertically up and down. In particular, the transmitting and receiving part 1021 of the grating displacement sensor 102 is fixedly mounted on the base 101. 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.

[0022] Specifically, the pressurizing assembly includes a central pressurizing cylinder 103 with a vertical stroke. The lower end of the central pressurizing cylinder 103 is fixedly connected to a cylinder bracket 104. A movable frame 105 is fitted inside the cylinder bracket 104 with clearance. The upper end of the movable frame 105 is fixedly connected to the piston rod of the central pressurizing cylinder 103. The lower end of the movable frame 105 is rotatably connected to the upper end of the loading shaft 122 via a bearing. A limiting pin 1051 with a horizontal axial direction is fixed on the movable frame 105. An elongated hole 1041 penetrating its side wall and with a vertical longitudinal direction is opened on the cylinder bracket 104. The limiting pin 1051 is located in the elongated hole 1041 and can move up and down within it. Large windows are respectively opened at corresponding positions on the side walls of the cylinder bracket 104 and the movable frame 105. A slider 106 with a vertical stroke is fixed on a cylinder bracket 104 on one side of the large window 1042 and the small window 1052. The slider 106 slides with a guide rail 107. A connecting block 108 is fixed on the guide rail 107. 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 a vertical axis and a horizontal spring plate 110. The outer end is fixed with the grating part 1022 of the grating displacement sensor 102. The head of the first screw 109 faces downward. The upper surface of the horizontal spring plate 110 abuts against the limiting pin 1051 and the lower surface is suspended. The spring force stored in the horizontal spring plate 110 ensures that the first screw 109 and the steel ball 112 always remain in contact. A second screw 111 with a vertical axial direction is fixed to the upper end of the loading shaft 122. The head of the second screw 111 faces upward and has an axial countersunk hole 1111. A tapered hole is formed in the bottom wall of the axial countersunk hole 1111, and a steel ball 112 is embedded in the tapered hole. The lower end face of the first screw 109 enters the axial countersunk hole 1111 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.

[0023] The lower end of the loading shaft 122 is connected to the sample clamping plate 113. A sample 200 is fixed in each guide hole of the sample clamping plate 113.

[0024] A motor 114 with a vertical axis is fixed on the base 101, and a drive wheel 115 is fixed on the output shaft of the motor 114; a driven wheel 117 is rotatably mounted on the base 101, and a belt 118 is wound around the drive wheel 115 and the driven wheel 117; a roller 116 is fixed at the bottom of the driven wheel 117, and the center part of the roller 116 slides up and down in cooperation with the loading shaft 122.

[0025] In the central pressurization mode, six samples 200 are fixedly mounted on the sample clamping plate 113. When the piston rod of the central pressurization cylinder 103 moves downward, it drives the movable frame 105 to move downward as well. The lower end of the movable frame 105 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 simultaneous pressurization and rotation of the six samples 200. Combined with the rotation of the grinding and polishing disc, the samples 200 are then ground or polished.

[0026] As the connecting block 108 moves downwards, the grating portion 1022 fixed thereon also moves downwards. The grating displacement sensor 102 records the initial data for the start of grinding or polishing the sample 200. As grinding and polishing proceed, a portion 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 disk 113 on it move downwards by a corresponding distance. The grating displacement sensor 102 records this 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, the grinding amount is displayed on the screen in real time.

[0027] The detailed description of this invention is based on embodiments, but it should be understood that the invention is not limited to these specific implementations. Those skilled in the art can make various modifications or improvements to this invention based on the content disclosed in this specification, and all such modifications or improvements should be included within the scope of protection of the claims of this invention.

Claims

1. A grinding and polishing machine that monitors grinding amount via a displacement sensor, comprising a grinding and polishing head module (100), the grinding and polishing head module (100) comprising a base (101) fixedly connected to a lifting platform, a pressurizing component fixedly mounted on the base (101), the pressurizing component driving a loading shaft (122) to slide vertically upwards / downwards in a central pressurizing mode, characterized in that, The transmitting and receiving parts (1021) of the grating displacement sensor (102) are fixed 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 the grating part (1022) of the grating displacement sensor (102). The pressurizing assembly includes a central pressurizing cylinder (103) with a vertical stroke. The lower end of the central pressurizing cylinder (103) is fixedly connected to a cylinder bracket (104). A movable frame (105) is fitted inside the cylinder bracket (104) with clearance. The upper end of the movable frame (105) is fixedly connected to the piston rod of the central pressurizing cylinder (103). The lower end of the movable frame (105) is rotatably connected to the upper end of the loading shaft (122) through a bearing. A limiting circle with a horizontal axial direction is fixed on the movable frame (105). A pin (1051) is provided on the cylinder bracket (104), with an elongated hole (1041) penetrating its side wall and extending vertically. The limiting pin (1051) is located in the elongated hole (1041) and can move up and down within it. A large window (1042) and a small window (1052) are respectively provided at corresponding positions on the side walls of the cylinder bracket (104) and the movable frame (105). A sliding rod with a vertical stroke is fixed on the cylinder bracket (104) on one side of the large window (1042). Block (106), slider (106) slidingly engages with guide rail (107), guide rail (107) is fixed with connecting block (108), the inner end of connecting block (108) passes through large window (1042) and small window (1052) and is screwed with first screw (109) in the vertical direction and horizontal spring plate (110), the outer end is fixed with grating part (1022) of grating displacement sensor (102), the head of first screw (109) is facing down, horizontal spring plate (110) The upper surface abuts against the limiting pin (1051) and the lower surface is suspended; the upper end of the loading shaft (122) is fixed with a second screw (111) in the vertical direction. The head of the second screw (111) faces upward and has an axial countersunk hole (1111). A tapered hole is opened on the bottom wall of the axial countersunk hole (1111). A steel ball (112) is embedded in the tapered hole. The lower end face of the first screw (109) enters the axial countersunk hole (1111) and abuts against the steel ball (112).

2. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 1, characterized in that, The lower end of the loading shaft (122) is directly or indirectly connected to the sample clamping plate (113), and a sample (200) is fixed in each guide hole of the sample clamping plate (113).

3. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 1, characterized in that, A motor (114) with a vertical axis is fixed on the base (101), and a drive wheel (115) is fixed on the output shaft of the motor (114); a driven wheel (117) is rotatably mounted on the base (101), and a belt (118) is wound around the drive wheel (115) and the driven wheel (117); a roller (116) is fixed at the bottom of the driven wheel (117), and the center of the roller (116) slides up and down in cooperation with the loading shaft (122).

4. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 1, characterized in that, The spring force stored in the horizontal spring plate (110) ensures that the first screw (109) and the steel ball (112) always remain in contact.

5. A grinding and polishing machine for monitoring grinding amount by means of a displacement sensor according to claim 1, characterized in that, The initial position of the connecting block (108) can be adjusted by adjusting the first screw (109) and / or the second screw (111).

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