A high-precision tool clamp for mill height measurement

Abstract

The utility model discloses a high accuracy tool fixture for mill height measurement, including mill height detection device of mill fixture connection mill fixture, the mill fixture includes translation component, control panel, mounting base, clamping part, positioning part and drive part, the mounting base and translation component sliding fit, the clamping part is located on the mounting base, drive part connects the mounting base, the positioning part is located in the clamping area of clamping part, control panel is connected with drive part, clamping part, positioning part signal respectively. Each component and control panel linkage, high degree of automation, reduce manual operation error, improve mill height measurement accuracy and efficiency, enhance the practicability of device and service life again, satisfy the high accuracy detection demand of precision machining field.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a high-precision tooling and fixture for measuring the height of a grinding disc. Background Technology

[0002] In fields such as machining and precision equipment manufacturing, the height accuracy of the grinding disc directly affects the quality of subsequent workpiece processing; therefore, grinding disc height measurement is one of the key processes. Existing grinding disc height measurement fixtures have several shortcomings: they largely rely on manual positioning and clamping of the grinding disc, resulting in large positioning deviations and low efficiency; the clamping force cannot be quantitatively controlled, easily leading to grinding disc deformation or loosening; translational drives often use ordinary motors with simple transmission structures, lacking precise guidance and closed-loop feedback, resulting in poor consistency in the grinding disc reaching the detection position; the detection devices are mostly fixed structures, making it difficult to adapt to different specifications of grinding discs, and inconvenient for disassembly and maintenance; furthermore, they lack real-time positioning calibration and pressure monitoring mechanisms, resulting in low automation, difficulty in controlling measurement errors, and inability to meet the demands of high-precision production. Summary of the Invention

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a high-precision tooling fixture for measuring the height of a grinding disc, which can effectively solve the problems raised in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A high-precision tooling fixture for measuring the height of a grinding disc includes a grinding disc fixture connected to a grinding disc height detection device. The grinding disc fixture includes a translation component, a control panel, a mounting base, a clamping component, a positioning component, and a driving component. The mounting base is slidably engaged with the translation component. The clamping component is disposed on the mounting base. The driving component is connected to the mounting base. The positioning component is disposed within the clamping area of ​​the clamping component. The control panel is signal-connected to the driving component, the clamping component, and the positioning component. The clamping component includes a connecting seat, four symmetrically distributed clamping blocks and a second lead screw. The clamping blocks are slidably connected to the connecting seat. The second lead screw passes through the clamping blocks and is connected to a handwheel through a synchronous transmission mechanism. The handwheel drives the clamping blocks to move closer or separate synchronously. A pressure sensor is embedded in the inner side of each clamping block.

[0005] As a further description of the above technical solution, the driving component includes a first lead screw and a motor. A bearing seat is provided on one side of the mounting base. The first lead screw passes through the bearing seat and is threadedly engaged. The motor drives the first lead screw to rotate so as to move the mounting base closer to or away from the grinding disc height detection device.

[0006] As a further description of the above technical solution, the positioning component includes a positioning base and four positioning rods, the positioning rods being arranged in an array on the positioning base, and an infrared locator being provided in the center of the positioning base, the infrared locator being signal-connected to the control panel.

[0007] As a further description of the above technical solution, the grinding disc height detection device is detachably connected to the grinding disc base. The grinding disc height detection device includes a mounting frame, a cylinder, a detection probe, and a measuring gauge. The cylinder is located on the top of the mounting frame, and the measuring gauge is connected to the detection probe.

[0008] As a further description of the above technical solution, the translation component includes parallel guide rails, and the bottom surface of the mounting base is provided with a slider adapted to the guide rails, the slider slidingly engaging with the guide rails.

[0009] As a further description of the above technical solution, the motor is a servo motor, and its output shaft is equipped with an encoder. The encoder is connected to the control panel for signal transmission. The bearing housing is embedded with a deep groove ball bearing, and the first lead screw is threadedly engaged with the bearing housing.

[0010] As a further description of the above technical solution, the synchronous transmission mechanism is a gear transmission mechanism or a worm gear transmission mechanism; the second lead screw is a two-way trapezoidal lead screw, and the clamping block is provided with an internal threaded hole at the corresponding position, with a self-lubricating threaded sleeve embedded in the hole.

[0011] As a further description of the above technical solution, the mounting frame is shaped like a gate, and the bottom end of its vertical rod is connected to the grinding disc clamp through a positioning pin and fastening bolt. The mounting frame is also provided with at least two guide rods. The mounting frame is connected to the output end of the cylinder. Each guide rod slides through the mounting frame. The mounting frame moves along the axis of the guide rods through the cylinder. The mounting frame is connected to the detection probe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a high-precision tooling fixture for measuring the height of a grinding disc, which has at least one of the following beneficial effects during use: Dual positioning via array positioning rods and infrared positioners, combined with real-time calibration via the control panel, ensures the grinding disc is precisely centered in the clamping mechanism, significantly reducing positioning deviation. The clamping components employ a synchronous transmission mechanism and a bidirectional trapezoidal lead screw to drive the four clamping blocks to open and close synchronously. Combined with pressure feedback control from an embedded pressure sensor, this achieves stable and non-destructive clamping of the grinding disc, preventing deformation caused by excessive clamping force. A closed-loop drive system using a servo motor, encoder, and lead screw guide rail enables the mounting base to move with micron-level precision, ensuring consistent grinding disc detection position. The portal-type mounting bracket and multi-guide rod vertical guidance design enhance the stability of the detection probe's movement. Combined with a detachable detection device, it adapts to different grinding disc sizes and facilitates maintenance. The interconnectedness of all components and the control panel results in a high degree of automation, reducing human error and improving both the accuracy and efficiency of grinding disc height measurement. This also enhances the practicality and lifespan of the device, meeting the high-precision inspection requirements of the precision machining field. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a high-precision tooling fixture for measuring the height of a grinding disc according to this utility model; Figure 2 This is a schematic diagram of the overall structure of a high-precision tooling fixture for measuring the height of a grinding disc, according to the present invention. Figure 3 This is a schematic diagram of the first side structure of a high-precision tooling fixture for measuring the height of a grinding disc, according to the present invention. Figure 4 This is a schematic diagram of the second side structure of a high-precision tooling fixture for measuring the height of a grinding disc, according to the present invention. Figure 5 This is a perspective view of a grinding disc fixture, a high-precision tooling fixture for measuring the height of a grinding disc according to this utility model.

[0014] Numbering on the map: 1. Grinding disc height detection device; 101. Mounting bracket; 102. Cylinder; 103. Measuring gauge; 104. Detection probe; 105. Guide rod; 2. Grinding disc clamp; 201. Translation component; 202. Control panel; 203. Mounting base; 204. Clamping component; 205. Positioning component; 206. Drive component; 207. Motor; 208. First lead screw; 209. Positioning rod; 210. Guide rail; 211. Positioning seat; 212. Slider; 213. Connecting seat; 214. Second lead screw; 215. Handwheel; 216. Clamping block; 217. Pressure sensor; 218. Infrared positioner. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-5 As shown, this utility model provides a high-precision tooling fixture for measuring the height of a grinding disc, including a grinding disc fixture 2 connected to a grinding disc height detection device 1. The grinding disc fixture 2 includes a translation component 201, a control panel 202, a mounting base 203, a clamping component 204, a positioning component 205, and a driving component 206. The mounting base 203 is slidably engaged with the translation component 201. The clamping component 204 is disposed on the mounting base 203. The driving component 206 is connected to the mounting base 203. The positioning component 205 is disposed within the clamping area of ​​the clamping component 204. The control panel 202 is signal-connected to the driving component 206, the clamping component 204, and the positioning component 205 respectively. The grinding disc to be tested is placed on the four arrayed positioning rods 209 of the positioning component 205. The infrared locator 218 in the middle of the positioning base 211 collects the center position coordinates of the grinding disc in real time and transmits them to the control panel 202. The control panel 202 determines whether the grinding disc is in the center of the clamping area based on the infrared positioning data. If there is any offset, it provides feedback to ensure the initial positioning accuracy of the grinding disc, laying the foundation for subsequent clamping and testing.

[0017] The clamping component 204 includes a connecting seat 213, four symmetrically distributed clamping blocks 216 and a second lead screw 214. The clamping blocks 216 are slidably connected to the connecting seat 213. The second lead screw 214 passes through the clamping blocks 216 and is connected to a handwheel 215 through a synchronous transmission mechanism. The handwheel 215 drives the clamping blocks 216 to move closer or separate synchronously. A pressure sensor 217 is embedded in the inner side of the clamping blocks 216.

[0018] The operator rotates handwheel 215, which drives the bidirectional trapezoidal lead screw to rotate via a synchronous transmission mechanism (gear drive or worm gear drive). Since the clamping block 216 is threadedly engaged with the second lead screw 214 and slidably connected to the connecting seat 213, the rotation of the bidirectional trapezoidal lead screw causes the four symmetrically distributed clamping blocks 216 to synchronously approach along the connecting seat 213 until the clamping blocks 216 are in contact with the side wall of the grinding disc. The pressure sensor 217 inside the clamping block 216 collects clamping pressure data in real time and transmits it to the control panel 202. When the pressure reaches a preset threshold, the operator stops rotating handwheel 215, achieving stable and non-destructive clamping of the grinding disc (the pressure sensor 217 prevents excessive clamping force from deforming the grinding disc).

[0019] (Control panel 202 sends commands to control the servo motor 207 of drive component 206 to operate, and the output shaft of motor 207 drives the first lead screw 208 to rotate. Since the bearing seat on one side of mounting base 203 is threadedly engaged with the first lead screw 208, and the mounting base 203 is slidably engaged with the guide rail 210 of translation component 201 through slider 212, the rotation of the first lead screw 208 is converted into linear movement of mounting base 203 along guide rail 210, which drives the clamped grinding disc to move closer (or further away) from grinding disc height detection device 1. The encoder of the output shaft of servo motor 207 provides real-time feedback on the speed and rotation angle of motor 207, and control panel 202 precisely controls the moving distance of mounting base 203 accordingly to ensure the accuracy of grinding disc reaching the detection position.)

[0020] After the grinding disc reaches the detection position, the cylinder 102 of the grinding disc height detection device 1 drives the mounting bracket 101 (and the detection probe 104) to move downwards along the axis of the guide rod 105. After the detection probe 104 contacts the top surface of the grinding disc, the measuring instrument 103 collects and records the grinding disc height data in real time. After the detection is completed, the cylinder 102 drives the detection probe 104 to reset, and the driving component 206 drives the mounting base 203 to reset, completing a single measurement process. If a retest is required, the above translation-detection steps can be repeated.

[0021] Furthermore, the driving component 206 includes a first lead screw 208 and a motor 207. A bearing seat is provided on one side of the mounting base 203. The first lead screw 208 passes through the bearing seat and is threadedly engaged. The motor 207 drives the first lead screw 208 to rotate so as to move the mounting base 203 closer to or away from the grinding disc height detection device 1.

[0022] The control panel 202 sends start / stop and forward / reverse commands to the motor 207. The output shaft of the motor 207 drives the first lead screw 208 to rotate coaxially. The bearing housing on one side of the mounting base 203 forms a threaded engagement (threaded pair) with the first lead screw 208. According to the principle of screw transmission, the rotational motion of the first lead screw 208 is converted into linear motion of the bearing housing (and the mounting base 203). When the motor 207 rotates forward, the first lead screw 208 pushes the bearing housing towards the grinding disc height detection device 1 through the threaded force, causing the mounting base 203 and the grinding disc clamped above it to move closer to the detection area. When the motor 207 rotates in reverse, the bearing housing drives the mounting base 203 away from the detection device, achieving a reset.

[0023] Furthermore, the positioning component 205 includes a positioning base 211 and four positioning rods 209. The positioning rods 209 are arranged in an array on the positioning base 211. An infrared locator 218 is provided in the middle of the positioning base 211. The infrared locator 218 is connected to the control panel 202 via a signal.

[0024] Four positioning rods 209 are arranged in an array (preferably a square array) on the top surface of the positioning base 211, forming a stable support plane. The grinding disc to be tested is placed on the top of the four positioning rods 209, and initial centering is achieved through the mechanical limiting of the positioning rods 209. The infrared positioner 218 in the middle of the positioning base 211 emits an infrared signal to illuminate the central area of ​​the grinding disc, and collects the actual position coordinate data of the grinding disc in real time. The infrared positioner 218 transmits the position data to the control panel 202 through a signal line. The control panel 202 has a built-in algorithm that compares the actual position of the grinding disc with the preset clamping center position to determine whether the grinding disc is offset. If there is an offset, it is corrected through audible and visual prompts or a linkage adjustment mechanism (optional) to ensure that the grinding disc is in the exact center of the clamping area.

[0025] Furthermore, the grinding disc height detection device 1 is detachably connected to the grinding disc base. The grinding disc height detection device 1 includes a mounting frame 101, a cylinder 102, a detection probe 104, and a measuring gauge 103. The cylinder 102 is located on the top of the mounting frame 101, and the measuring gauge 103 is connected to the detection probe 104.

[0026] The grinding disc height detection device 1 is connected to the grinding disc clamp 2 through a detachable structure (such as positioning pins + bolts, buckles, etc.), which facilitates disassembly, maintenance or replacement of detection components adapted to different grinding discs.

[0027] After the control panel 202 sends a test command, the cylinder 102 on top of the mounting bracket 101 is activated, and its output end drives the test probe 104 to reciprocate vertically. When the test probe 104 moves downward to contact the top surface of the grinding disc, it transmits a pressure signal or displacement signal to the measuring instrument 103. The measuring instrument 103 calculates the actual height of the grinding disc based on a preset reference value and displays or stores the data in real time. After the test is completed, the cylinder 102 drives the test probe 104 to reset upward, waiting for the next test command.

[0028] Furthermore, the translation component 201 includes parallel guide rails 210, and the bottom surface of the mounting base 203 is provided with a slider 212 adapted to the guide rails 210, and the slider 212 slides in cooperation with the guide rails 210.

[0029] The two guide rails 210 of the translation component 201 are fixed parallel to the worktable surface of the grinding disc fixture 2, forming a fixed guide trajectory. The slider 212 on the bottom surface of the mounting base 203 is adapted to the guide rail 210 one by one, and the slider 212 is embedded in the guide groove of the guide rail 210 to form a low-friction sliding pair. When the driving component 206 (first lead screw 208 + motor 207) drives the mounting base 203 to move, the slider 212 slides along the extension direction (front and back direction) of the guide rail 210, restricting the displacement of the mounting base 203 in the direction perpendicular to the guide rail 210, ensuring that the mounting base 203 only performs linear motion.

[0030] Furthermore, the motor 207 is a servo motor 207, and its output shaft is equipped with an encoder. The encoder is connected to the control panel 202 via signal. The bearing housing is embedded with a deep groove ball bearing, and the first lead screw 208 is threadedly engaged with the bearing housing.

[0031] The motor 207 is a servo motor, whose output shaft is coaxially fixed to the first lead screw 208 via a coupling. The servo motor 207 receives pulse commands from the control panel 202 to precisely control the rotation angle and speed. An encoder on the output shaft of the servo motor 207 collects the rotation angle and speed data of the motor 207 in real time and feeds the data back to the control panel 202, forming a closed-loop control circuit. The control panel 202 adjusts the output of the motor 207 based on the feedback data to ensure the rotation accuracy of the motor 207. A deep groove ball bearing is embedded in the bearing housing. After the first lead screw 208 passes through the deep groove ball bearing, it forms a threaded fit with the bearing housing. The deep groove ball bearing reduces radial friction and axial clearance during the rotation of the first lead screw 208, making the lead screw rotate more smoothly.

[0032] Furthermore, the synchronous transmission mechanism is a gear transmission mechanism or a worm gear transmission mechanism; the second lead screw 214 is a bidirectional trapezoidal lead screw, and the clamping block 216 is provided with an internal threaded hole at the corresponding position, with a self-lubricating threaded sleeve embedded in the hole.

[0033] The synchronous transmission mechanism can be either a gear transmission mechanism or a worm gear transmission mechanism: If it is a gear transmission, the handwheel 215 drives the driving gear to rotate, which meshes with the four driven gears, driving the four second lead screws 214 to rotate synchronously; if it is a worm gear transmission, the handwheel 215 drives the worm to rotate, which meshes with the four worm wheels one by one, driving the second lead screws 214 to rotate. The second lead screws 214 are bidirectional trapezoidal lead screws with left and right threads, respectively engaging with the internal threaded holes of the four clamping blocks 216. When the second lead screws 214 rotate, the left and right threads generate axial forces in opposite directions, causing the clamping blocks 216 to synchronously approach (clamp) or separate (release) along the connecting seat 213. A self-lubricating threaded sleeve is embedded in the internal threaded hole of the clamping block 216, and the threaded sleeve directly contacts the threaded surface of the second lead screw 214, reducing meshing friction.

[0034] Furthermore, the mounting frame 101 is shaped like a gate, with its vertical rod bottom end connected to the grinding disc clamp 2 via a positioning pin and fastening bolts. The mounting frame 101 is also provided with at least two guide rods 105. The mounting frame 101 is connected to the output end of the cylinder 102, and each guide rod 105 slides through the mounting frame 101. The mounting frame 101 moves along the axis of the guide rods 105 via the cylinder 102. The mounting frame 101 is connected to the detection probe 104.

[0035] The mounting frame 101 has a portal frame structure. Its vertical rod bottom end engages with the positioning hole of the grinding disc clamp 2 via a positioning pin for initial positioning, and is then tightened with bolts to ensure the connection accuracy between the mounting frame 101 and the grinding disc clamp 2. The mounting frame 101 has at least two guide rods 105, which are vertically fixed to the crossbeam of the mounting frame 101 and slide through the guide holes of the mounting frame 101, forming a vertical guiding structure. The output end of the cylinder 102 is fixedly connected to the mounting frame 101. The control panel 202 controls the extension and retraction of the cylinder 102, causing the mounting frame 101 to move vertically along the axis of the guide rods 105. The detection probe 104 connected below the mounting frame 101 moves synchronously with the mounting frame 101, achieving vertical contact with the top surface of the grinding disc.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-precision tooling fixture for measuring the height of a grinding disc, comprising a grinding disc fixture connected to a grinding disc fixture and a grinding disc height detection device, characterized in that, The grinding wheel fixture includes a translation component, a control panel, a mounting base, a clamping component, a positioning component, and a driving component. The mounting base is slidably engaged with the translation component. The clamping component is disposed on the mounting base. The driving component is connected to the mounting base. The positioning component is disposed within the clamping area of ​​the clamping component. The control panel is signal-connected to the driving component, the clamping component, and the positioning component, respectively. The clamping component includes a connecting seat, four symmetrically distributed clamping blocks and a second lead screw. The clamping blocks are slidably connected to the connecting seat. The second lead screw passes through the clamping blocks and is connected to a handwheel through a synchronous transmission mechanism. The handwheel drives the clamping blocks to move closer or separate synchronously. A pressure sensor is embedded in the inner side of each clamping block.

2. The high-precision tooling fixture for measuring the height of a grinding disc according to claim 1, characterized in that: The driving component includes a first lead screw and a motor. A bearing seat is provided on one side of the mounting base. The first lead screw passes through the bearing seat and is threadedly engaged. The motor drives the first lead screw to rotate so as to move the mounting base closer to or away from the grinding disc height detection device.

3. A high-precision tooling fixture for measuring the height of a grinding disc according to claim 1, characterized in that: The positioning component includes a positioning base and four positioning rods, which are arranged in an array on the positioning base. An infrared locator is provided in the center of the positioning base, and the infrared locator is connected to the control panel via a signal.

4. A high-precision tooling fixture for measuring the height of a grinding disc according to claim 1, characterized in that: The grinding disc height detection device is detachably connected to the grinding disc base. The grinding disc height detection device includes a mounting frame, a cylinder, a detection probe, and a measuring gauge. The cylinder is located on the top of the mounting frame, and the measuring gauge is connected to the detection probe.

5. A high-precision tooling fixture for measuring the height of a grinding disc according to claim 1, characterized in that: The translation component includes parallel guide rails, and the bottom surface of the mounting base is provided with a slider that is adapted to the guide rails, and the slider slides in cooperation with the guide rails.

6. A high-precision tooling fixture for measuring the height of a grinding disc according to claim 2, characterized in that: The motor is a servo motor, and its output shaft is equipped with an encoder. The encoder is connected to the control panel for signal transmission. The bearing housing is embedded with a deep groove ball bearing, and the first lead screw is threadedly engaged with the bearing housing.

7. A high-precision tooling fixture for measuring the height of a grinding disc according to claim 1, characterized in that: The synchronous transmission mechanism is a gear transmission mechanism or a worm gear transmission mechanism; the second lead screw is a two-way trapezoidal lead screw, and the clamping block is provided with an internal threaded hole at the corresponding position, with a self-lubricating threaded sleeve embedded in the hole.

8. A high-precision tooling fixture for measuring the height of a grinding disc according to claim 4, characterized in that: The mounting frame is shaped like a gate, with the bottom end of its vertical rod connected to the grinding disc clamp via a positioning pin and fastening bolts. The mounting frame is also provided with at least two guide rods. The mounting frame is connected to the output end of the cylinder, and each guide rod slides through the mounting frame. The mounting frame moves along the axis of the guide rods via the cylinder. The mounting frame is connected to the detection probe.

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