Workpiece fixing disc for three-coordinate measuring machine

Abstract

The utility model relates to a workpiece fixing disc for a three-coordinate measuring machine, the workpiece fixing disc comprises a base, a fixing device and an adjusting device, the base is used for fixing a position, the adjusting device is arranged on the base and used for adjusting the fixing device, and the fixing device is arranged on the adjusting device; the rotation adjusting assembly comprises a mounting shell, a driving motor, a first bevel gear, a second bevel gear and a rotating shaft, the driving motor is arranged at the top of the mounting shell, the driving end of the driving motor extends into the mounting shell in the vertical direction, the first bevel gear is arranged at the driving end of the driving motor, and the second bevel gear is engaged with the first bevel gear; one end of the rotating shaft is fixedly connected with the second bevel gear, the other end extends out of the mounting shell in the horizontal direction, the rotating shaft is rotationally connected with the mounting shell, and the fixing device is fixedly connected with the end, extending out of the mounting shell, of the rotating shaft. The device has the effect of adjusting the direction of the to-be-detected workpiece at multiple angles.

Description

Technical Field

[0001] This application relates to the technical field of three - coordinate measurement, and particularly to a workpiece fixing plate for a three - coordinate measuring machine. Background Art

[0002] Three - coordinate measuring machines are widely used in industries such as machinery, electronics, instrumentation, and plastics. A three - coordinate measuring machine is one of the most effective methods for measuring and obtaining dimensional data because it can replace a variety of surface measuring tools and expensive combined gauges, and reduce the time required for complex measurement tasks from hours to minutes, which is an effect that other instruments cannot achieve.

[0003] Currently, the mainly used three - coordinate measuring machines include bridge - type measuring machines, gantry - type measuring machines, horizontal - arm type measuring machines, and portable measuring machines. The measurement methods can be roughly divided into two types: contact type and non - contact type. Gantry - type three - coordinate measuring instruments and multi - functional coordinate series image measuring instruments are precision and efficient length measuring instruments integrating precision machinery, optics, electronics, and computer software. The instrument utilizes the most advanced image information processing technology, coordinate measurement technology, computer measurement and control technology, and programmable control optical lighting technology, and is widely used in industries such as machinery, instrumentation, clocks and watches, and light industry, as well as in colleges, universities, research institutes, and metrology verification departments. This instrument can efficiently detect the contour dimensions and surface shapes of various complex - shaped workpieces, such as templates, stamping parts, cams, threads, gears, forming cutters, taps, molds, mobile phone parts, and other tools, cutters, and parts.

[0004] Currently, a workpiece fixing device is disclosed in the prior art, which includes a fixing base, a fixing clamp, and an adjusting rod. The fixing base is used to be fixed on a three - coordinate measuring machine. The adjusting rod is arranged on the fixing base, and the fixing clamp is arranged on the adjusting rod. The fixing clamp is used to fix the workpiece to be measured, and the fixing clamp is slidably connected to the adjusting rod.

[0005] Regarding the above - mentioned related technology, the inventor believes that for some workpieces to be measured with irregular shapes, if data at multiple positions need to be detected, the operator needs to constantly remove the workpiece to be measured, then re - change the detection direction and reinstall it on the fixing clamp, which is very inconvenient. Content of the Utility Model

[0006] In order to be able to adjust the direction of the workpiece to be measured from multiple angles, this application provides a workpiece fixing plate for a three - coordinate measuring machine.

[0007] This application provides a workpiece fixing plate for a three - coordinate measuring machine, adopting the following technical solutions:

[0008] A workpiece fixing plate for a three - coordinate measuring machine, comprising a base, a fixing device and an adjusting device. The base is used for fixing the position. The adjusting device is arranged on the base and is used for adjusting the fixing device. The fixing device is arranged on the adjusting device and is used for fixing the workpiece to be measured;

[0009] The adjusting device includes a horizontal movement component, a height adjustment component and a rotation adjustment component. The horizontal movement component is arranged on both sides of the base. The height adjustment component is arranged on the horizontal movement component. The rotation adjustment component is arranged at one end of the height adjustment component away from the horizontal movement component;

[0010] The rotation adjustment component includes a mounting shell, a driving motor, a first bevel gear, a second bevel gear and a rotating shaft. The driving motor is arranged on the top of the mounting shell, and the driving end of the driving motor extends vertically into the mounting shell. The first bevel gear is arranged on the driving end of the driving motor. The second bevel gear is meshed with the first bevel gear. One end of the rotating shaft is fixedly connected to the second bevel gear, and the other end extends horizontally out of the mounting shell. The rotating shaft is rotatably connected to the mounting shell. The fixing device is fixedly connected to the end of the rotating shaft extending out of the mounting shell.

[0011] By adopting the above - mentioned technical solution, there are various specifications and shapes of workpieces to be measured. When detecting some workpieces to be measured with special shapes, when the probe cannot move to the position to be measured, it is necessary to rotate and adjust the workpiece to be measured through the rotation adjustment component, and rotate the area to be measured of the workpiece to be measured to the horizontal or vertical plane for detection. The horizontal movement component and the vertical adjustment component can adjust the positions of the rotation adjustment component and the fixing device according to the size of the workpiece to be measured and the position to be fixed, so as to adapt to more sizes and shapes of workpieces to be measured, and finally achieve the purpose of quickly adjusting the direction of the workpiece to be measured.

[0012] Optionally, sliding grooves are symmetrically arranged on the base. The sliding grooves are sunk into the base. The horizontal movement component includes a horizontal pushing cylinder, a vertical pushing cylinder and a mounting seat. The horizontal pushing cylinder is arranged at the end of the sliding groove and is located in the sliding groove. The vertical pushing cylinder is arranged at the pushing end of the horizontal pushing cylinder. The mounting seat is arranged at the pushing end of the vertical pushing cylinder.

[0013] By adopting the above - mentioned technical solution, the movement of the mounting seat is realized through the horizontal pushing cylinder and the vertical pushing cylinder, so as to ensure that the adjusting device can adjust and fix the workpiece to be measured at any position in the horizontal direction, effectively improving the inclusiveness of more sizes of the workpiece to be measured.

[0014] Optionally, fixed racks are symmetrically provided on both sides of the chute on the base. A conveyor belt is provided at a position of the mounting seat corresponding to the fixed rack. A clamping rack is provided on the conveyor belt, and the size of the clamping rack is the same as that of the fixed rack.

[0015] By adopting the above technical solution, after the mounting seat reaches a proper position by being pushed by the horizontal push cylinder, the clamping rack is adjusted to a position meshed with the fixed rack by adjusting the position of the conveyor belt, and the vertical push cylinder is controlled to sink, so as to realize the meshing of the fixed rack and the clamping rack and fix the mounting seat. Further, it is ensured that when the probe contacts and detects the workpiece to be measured, the workpiece to be measured will not shift in position, improving the stability and detection accuracy.

[0016] Optionally, the height adjustment assembly includes a lifting platform, a horizontal push rod and a vertical push rod. The lifting platform is arranged on the top of the mounting seat. A lifting groove is provided on one side of the lifting platform close to the center position of the base. The vertical push rod is arranged in the lifting groove along the vertical direction close to one end of the base. The horizontal push rod is horizontally arranged at the pushing end of the vertical push rod. The mounting shell is fixedly connected to the pushing end of the horizontal push rod.

[0017] By adopting the above technical solution, the cooperation between the horizontal push rod and the vertical push rod can further ensure that the fixing device fixes workpieces of different models and sizes, effectively improving the adaptability.

[0018] Optionally, the fixing device includes a limit clip and a limit bolt. The limit clip includes a first limit plate, a second limit plate and a third limit plate. The second limit plate and the third limit plate are symmetrically arranged on both sides of the first limit plate. One side of the first limit plate away from the second limit plate and the third limit plate is fixedly connected to the rotating shaft. A threaded hole is provided on the second limit plate. The limit bolt is threadedly connected to the threaded hole. A clamping plate is provided at one end of the limit bolt close to the third limit plate.

[0019] By adopting the above technical solution, the fixing bolt can adjust the distance between the clamping plate and the third limit plate, and the threaded connection can ensure the stability and firmness of the workpiece to be measured during the detection process after the workpiece to be measured is fixed, effectively improving the accuracy of the detection result.

[0020] Optionally, rubber layers are provided on the third limit plate and the clamping plate, and the opposite surfaces of the rubber layers are wavy.

[0021] By adopting the above technical solution, the wavy rubber layer can better wrap and softly contact the workpiece to be measured, playing a good role in protecting the workpiece to be measured with brittle and soft texture.

[0022] Optionally, suction cups are provided at the four corners of the bottom of the base.

[0023] By adopting the above technical solution, the suction cups are designed to fix the base on the coordinate measuring machine. At the same time, the suction cups fix the base on the coordinate measuring machine by generating negative pressure between the contact surfaces, and will not cause damage to the coordinate measuring machine during fixing and removal, playing a role of fixing and protecting, and protecting the service life of the coordinate measuring machine.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. After the limit bolt fixes the workpiece to be measured between the limit plate three and the clamping plate, the driving motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to drive the rotating rod to rotate, and then drives the entire rotation adjustment assembly to rotate, realizing the rotation of the workpiece to be measured, which is more convenient for adjusting the workpiece to be measured, saving a lot of time. At the same time, under the action of the horizontal movement assembly and the vertical adjustment assembly, when rotating the workpiece to be measured, the position of the workpiece to be measured can also be adjusted in more dimensions accordingly, expanding the compatibility with the size of the workpiece to be measured;

[0026] 2. By setting the fixed rack and the clamping rack, the mounting seat can be firmly fixed on the base. After the horizontal, vertical and rotational adjustments of the workpiece to be measured are completed, after the conveyor belt adjusts the meshing angle of the clamping rack and the fixed rack, the vertical pushing cylinder sinks, so that the entire system can be firmly fixed on the base. When the probe contacts and measures the workpiece to be measured, it can reduce the jitter and offset of the workpiece to be measured, thus greatly improving the measurement accuracy;

[0027] 3. By respectively arranging rubber layers at the corresponding positions on the clamping plate and the limit plate three, and there are corrugations on the contact surfaces of the two rubber layers, the contact area can be increased when fixing the workpiece to be measured, and it can also play a certain protective role for brittle and soft workpieces. At the same time, when the probe contacts the workpiece to be measured, it can also absorb part of the jitter generated by the contact, thus further ensuring the measurement accuracy of the workpiece to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a workpiece fixing plate for a coordinate measuring machine according to an embodiment of the present application;

[0029] Figure 2 is a cross-sectional view of a workpiece fixing plate for a coordinate measuring machine according to an embodiment of the present application;

[0030] Figure 3 is Figure 2 an enlarged view of part A in

[0031] Reference numerals: 1, base; 11, chute; 12, fixed rack; 13, suction cup; 2, fixing device; 21, limit clamp; 211, first limit plate; 212, second limit plate; 2121, threaded hole; 213, third limit plate; 22, limit bolt; 221, clamping plate; 222, rubber layer; 3, adjusting device; 31, horizontal movement assembly; 311, horizontal push cylinder; 312, vertical push cylinder; 313, mounting seat; 3131, conveyor belt; 3132, engaging rack; 32, height adjustment assembly; 321, lifting platform; 3211, lifting groove; 322, horizontal push rod; 323, vertical push rod; 33, rotation adjustment assembly; 331, mounting shell; 332, drive motor; 333, first bevel gear; 334, second bevel gear; 335, rotating shaft. Detailed implementation mode

[0032] The following will further elaborate on this application in conjunction with the attached Figures 1-3 drawings.

[0033] The embodiment of this application discloses a workpiece fixing plate for a three - coordinate measuring machine.

[0034] Referring to Figures 1-3 , a workpiece fixing plate for a three - coordinate measuring machine includes a base 1, a fixing device 2 and an adjusting device 3. Suction cups 13 are connected to the four corners of the bottom of the base 1 through bolts. The suction cups 13 are used to fix the position of the base 1. The adjusting device 3 is installed on the base 1 and is used to adjust the fixing device 2. The fixing device 2 is installed on the adjusting device 3 and is used to fix the workpiece to be measured.

[0035] The adjusting device 3 includes a horizontal movement assembly 31, a height adjustment assembly 32 and a rotation adjustment assembly 33. The horizontal movement assembly 31 is arranged on both sides of the base 1. The height adjustment assembly 32 is installed on the horizontal movement assembly 31. The rotation adjustment assembly 33 is installed at one end of the height adjustment assembly 32 away from the horizontal movement assembly 31.

[0036] Referring to Figure 3 , the rotation adjustment assembly 33 includes a mounting shell 331, a drive motor 332, a first bevel gear 333, a second bevel gear 334 and a rotating shaft 335. The drive motor 332 is installed on the top of the mounting shell 331 through bolts, and the drive end of the drive motor 332 extends vertically into the mounting shell 331. The first bevel gear 333 is welded to the drive end of the drive motor 332. The second bevel gear 334 is meshed with the first bevel gear 333. One end of the rotating shaft 335 is welded to the second bevel gear 334, and the other end extends horizontally out of the mounting shell 331. The rotating shaft 335 is rotatably connected to the mounting shell 331. The fixing device 2 is welded to the end of the rotating shaft 335 extending out of the mounting shell 331.

[0037] Referring to Figure 1, symmetric sliding grooves 11 are formed on the base 1. The sliding grooves 11 are sunken into the base 1. The horizontal movement assembly 31 includes a horizontal pushing cylinder 311, a vertical pushing cylinder 312, and a mounting seat 313. The horizontal pushing cylinder 311 is welded to the end of the sliding groove 11 and is located within the sliding groove 11. The vertical pushing cylinder 312 is welded to the pushing end of the horizontal pushing cylinder 311. The mounting seat 313 is welded to the pushing end of the vertical pushing cylinder 312.

[0038] On both sides of the sliding groove 11 and symmetrically arranged on the base 1 are fixed racks 12. The fixed racks 12 are integrally connected to the base 1. A conveyor belt 3131 is rotatably connected at a position corresponding to the fixed rack 12 on the mounting seat 313. A clamping rack 3132 is adhered to the conveyor belt 3131. The size of the clamping rack 3132 is the same as that of the fixed rack 12.

[0039] Refer to Figure 2 , the height adjustment assembly 32 includes a lifting platform 321, a horizontal push rod 322, and a vertical push rod 323. The lifting platform 321 is welded to the top of the mounting seat 313. On one side of the lifting platform 321 near the center of the base 1, a lifting groove 3211 is formed. The vertical push rod 323 is welded vertically within the lifting groove 3211 near one end of the base 1. The horizontal push rod 322 is horizontally welded to the pushing end of the vertical push rod 323. The mounting shell 331 is welded to the pushing end of the horizontal push rod 322.

[0040] Refer to Figure 2 , the fixing device 2 includes a limit clip 21 and a limit bolt 22. The limit clip 21 includes a first limit plate 211, a second limit plate 212, and a third limit plate 213. The second limit plate 212 and the third limit plate 213 are symmetrically welded to both sides of the first limit plate 211. The side of the first limit plate 211 away from the second limit plate 212 and the third limit plate 213 is welded to the rotating shaft 335. A threaded hole 2121 is formed in the second limit plate 212. The limit bolt 22 is threadedly connected to the threaded hole 2121. A clamping plate 221 is welded to one end of the limit bolt 22 near the third limit plate 213. Rubber layers 222 are adhered to both the clamping plate 221 and the third limit plate 213. The two rubber layers 222 are correspondingly arranged, and the opposite surfaces of the two rubber layers 222 are wavy.

[0041] In this embodiment, there are two sliding grooves 11 and four groups of fixed racks 12. Correspondingly, there are two sets of the horizontal movement assembly 31, the vertical adjustment assembly, the rotation assembly, and the fixing device 2, and they are symmetrically and oppositely arranged on the base 1.

[0042] The implementation principle of a workpiece fixing plate for a three - coordinate measuring machine in an embodiment of this application is as follows: When it is necessary to measure a workpiece to be measured, first drive the horizontal push rod 322 to adjust its position, and push the fixing device 2 to a suitable position according to the size of the workpiece to be measured. At this time, adjust the vertical push rod 323 according to the size of the workpiece to be measured. After adjustment, adjust the position of the limit bolt 22. Place the fixing position of the workpiece to be measured between the rubber layer 222 of the clamping plate 221 and the limit plate two 213, and then fix the workpiece to be measured by rotating the limit bolt 22 through threads. When two groups of fixing devices 2 are required for fixing, fix the other side through the same steps. At this time, place the base 1 on the three - coordinate measuring machine, control the sucker 13 to be firmly fixed to the three - coordinate measuring machine. Then, control the vertical push cylinder 312 to lift the mounting seat 313, so that the engaging rack 3132 and the fixed rack 12 are separated. Adjust the position of the workpiece to be measured through the horizontal push cylinder 311. After adjustment, control the conveyor belt 3131 to rotate, and adjust the engaging rack 3132 to a position meshed with the fixed rack 12. At this time, control the vertical push cylinder 312 to descend, so that the mounting seat 313 is firmly fixed, and then start the measurement. When it is necessary to adjust to another position after measuring one position, control the first bevel gear 333 to rotate through the drive motor 332. The first bevel gear 333 drives the second bevel gear 334 to rotate, and then drives the rotating shaft 335 to rotate. The rotating shaft 335 drives the limit plate two 212 to rotate, so as to adjust the measurement position of the workpiece to be measured. After the measurement is completed, remove the workpiece to be measured, and then release the fixation between the sucker 13 and the three - coordinate measuring machine.

[0043] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A workpiece fixing plate for a three - coordinate measuring machine, characterized in that: It includes a base (1), a fixing device (2) and an adjusting device (3). The base (1) is used for fixing the position. The adjusting device (3) is arranged on the base (1) and is used for adjusting the fixing device (2). The fixing device (2) is arranged on the adjusting device (3) and is used for fixing the workpiece to be measured. The adjusting device (3) includes a horizontal movement component (31), a height adjustment component (32) and a rotation adjustment component (33). The horizontal movement component (31) is arranged on both sides of the base (1). The height adjustment component (32) is arranged on the horizontal movement component (31). The rotation adjustment component (33) is arranged at one end of the height adjustment component (32) away from the horizontal movement component (31). The rotation adjustment component (33) includes a mounting shell (331), a driving motor (332), a first bevel gear (333), a second bevel gear (334) and a rotating shaft (335). The driving motor (332) is arranged on the top of the mounting shell (331), and the driving end of the driving motor (332) extends vertically into the mounting shell (331). The first bevel gear (333) is arranged on the driving end of the driving motor (332). The second bevel gear (334) is meshed with the first bevel gear (333). One end of the rotating shaft (335) is fixedly connected to the second bevel gear (334), and the other end extends horizontally out of the mounting shell (331). The rotating shaft (335) is rotatably connected to the mounting shell (331). The fixing device (2) is fixedly connected to the end of the rotating shaft (335) extending out of the mounting shell (331).

2. The workpiece fixing plate for a three - coordinate measuring machine according to claim 1, characterized in that: Chutes (11) are symmetrically arranged on the base (1). The chutes (11) are sunken into the base (1). The horizontal movement component (31) includes a horizontal pushing cylinder (311), a vertical pushing cylinder (312) and a mounting seat (313). The horizontal pushing cylinder (311) is arranged at the end of the chute (11) and is located inside the chute (11). The vertical pushing cylinder (312) is arranged at the pushing end of the horizontal pushing cylinder (311). The mounting seat (313) is arranged at the pushing end of the vertical pushing cylinder (312).

3. The workpiece fixing plate for a coordinate measuring machine according to claim 2, characterized in that: Fixed racks (12) are symmetrically arranged on the base (1) on both sides of the chute (11). A conveyor belt (3131) is arranged at the position of the mounting seat (313) corresponding to the fixed rack (12). A clamping rack (3132) is arranged on the conveyor belt (3131). The size of the clamping rack (3132) is the same as that of the fixed rack (12).

4. The workpiece fixing disk for a three-coordinate measuring machine according to claim 2, characterized in that: The height adjustment assembly (32) includes a lifting platform (321), a horizontal push rod (322), and a vertical push rod (323). The lifting platform (321) is arranged on the top of the mounting seat (313). A lifting groove (3211) is provided on one side of the lifting platform (321) near the center position of the base (1). The vertical push rod (323) is arranged vertically in the lifting groove (3211) near one end of the base (1). The horizontal push rod (322) is arranged horizontally at the pushing end of the vertical push rod (323). The mounting shell (331) is fixedly connected to the pushing end of the horizontal push rod (322).

5. The workpiece fixing plate for a coordinate measuring machine according to claim 4, characterized in that: The fixing device (2) includes a limit clamp (21) and a limit bolt (22). The limit clamp (21) includes a first limit plate (211), a second limit plate (212), and a third limit plate (213). The second limit plate (212) and the third limit plate (213) are symmetrically arranged on both sides of the first limit plate (211). One side of the first limit plate (211) away from the second limit plate (212) and the third limit plate (213) is fixedly connected to the rotating shaft (335). A threaded hole (2121) is provided on the second limit plate (212). The limit bolt (22) is threadedly connected to the threaded hole (2121). A clamping plate (221) is provided at one end of the limit bolt (22) close to the third limit plate (213).

6. A workpiece fixing plate for a three - coordinate measuring machine according to claim 5, characterized in that: Rubber layers (222) are provided on the third limit plate (213) and the clamping plate (221), and the opposite surfaces of the rubber layers (222) are wavy.

7. A workpiece fixing disc for a three-coordinate measuring machine according to claim 1, characterized in that: Suction cups (13) are provided at the four corners of the bottom of the base (1).

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