A high-precision three-coordinate measuring instrument

Abstract

The utility model relates to measuring instrument technical field discloses a kind of high-precision three-coordinate measuring instruments, including workbench, workbench side fixed mounting has fixed block, the fixed block top is provided with the needle storage assembly for placing probe head, the fixed block side is provided with the protection assembly for protecting probe head, when detection is completed, probe needle idles, protection frame can be moved upwards, make probe needle be located inside protection frame, and it is fixed by fixed component, protection assembly provides protection for probe needle from multiple aspects, protection frame can prevent external object directly colliding probe needle, avoid that probe needle is damaged in idle process, such as collision, scraping, protection top cover further blocks the entry of dust and foreign matter, formed double protection barrier, effectively reduced the risk of probe needle damage.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, specifically to a high-precision coordinate measuring instrument. Background Technology

[0002] Coordinate measuring machines (CMMs) are widely used in industries such as machinery, electronics, instrumentation, and plastics. CMMs are one of the most efficient methods for measuring and obtaining dimensional data because they can replace various surface measuring tools and expensive combination gauges, reducing the time required for complex measurement tasks from hours to minutes—an effect that other instruments cannot achieve.

[0003] Existing devices have some drawbacks in use. For example, in the application scenarios of existing high-precision coordinate measuring machines, when the inspection work is completed and the probe is idle, there is a lack of effective comprehensive protection measures. On the one hand, the production workshop or testing laboratory where the measuring instrument is located has a complex environment with various uncertainties. During personnel movement, equipment handling, and daily operations, external objects can easily collide with the probe unintentionally. Since the probe is extremely fragile, even a slight collision can cause its tip to deform, bend, or even break, which will seriously affect the measurement accuracy, cause deviations in the measurement data, and fail to provide accurate basis for subsequent production processing or quality inspection. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision coordinate measuring machine that solves the problem of lacking effective comprehensive protection measures when the probe is idle.

[0005] This utility model provides the following technical solution: a high-precision coordinate measuring machine, including a worktable, a Y-axis transmission rail fixedly connected to one side of the upper surface of the worktable, a sliding block slidably connected to the Y-axis transmission rail, a column fixedly connected to the upper surface of the sliding block, an X-axis slide rail fixedly connected to the top side wall of the column, a Z-axis transmission box slidably connected to the X-axis slide rail, a probe head fixedly connected to the movable end of the Z-axis transmission box, a fixing block fixedly installed on one side of the worktable, a needle storage assembly for placing the probe head provided on the top of the fixing block, and a protective assembly for protecting the probe head provided on one side of the fixing block.

[0006] As a preferred embodiment of the above technical solution, the needle storage assembly includes a limiting groove formed on the top side wall of the fixing block, a plurality of magnets are arrayed and embedded on the inner side wall of the limiting groove, a limiting slider is slidably connected to the limiting groove, a placement frame is fixedly connected to one side of the limiting slider, an iron plate is embedded on the other side of the limiting slider, and the limiting slider is fixed in the limiting groove by the magnets and the iron plate.

[0007] As a preferred embodiment of the above technical solution, the protective component includes two guide grooves and a protective frame. The two guide grooves are symmetrically opened laterally on the side wall of the fixing block. A guide block adapted to the guide groove is fixedly connected to the side wall of the protective frame. The guide block slides in the guide groove. A protective top cover is hinged to the top of the protective frame. A fixing component for fixing the protective frame is provided on the side wall of the fixing block away from the protective frame.

[0008] As a preferred embodiment of the above technical solution, the fixing component includes two rectangular openings symmetrically formed on the fixing block, a rectangular rod inserted into each of the two rectangular openings, a pull plate fixed to the end of each of the two rectangular rods away from the protective frame, and a plurality of return springs horizontally arranged on the side wall of the pull plate near the fixing block, the other end of the plurality of return springs being fixed to the side wall of the fixing block.

[0009] As a preferred embodiment of the above technical solution, a carrying handle is fixedly connected to the center of the upper surface of the protective top cover.

[0010] As a preferred embodiment of the above technical solution, a movable column is fixedly connected to one side of the lower end face of the X-axis slide rail, and a Y-axis movable groove is provided on one side of the upper end face of the worktable, and the movable column slides in the Y-axis movable groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, when the probe is idle after the test is completed, the protective frame can be moved upward so that the probe is located inside the protective frame and fixed by the fixing component. The protective component provides protection for the probe in multiple ways. The protective frame can prevent external objects from directly colliding with the probe, avoiding damage such as collisions and scratches to the probe during idle periods. The protective top cover further blocks the entry of dust and foreign objects, forming a double protective barrier and effectively reducing the risk of damage to the probe. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a high-precision coordinate measuring machine;

[0014] Figure 2 A magnified first-view structural diagram of the protective component;

[0015] Figure 3 A magnified schematic diagram of the protective component from a second-view perspective;

[0016] Figure 4 A schematic diagram of the explosion structure of the protective component;

[0017] Figure 5 This is an enlarged structural schematic diagram of the needle reservoir assembly.

[0018] In the diagram: 1. Worktable; 11. Y-axis drive rail; 12. Sliding block; 13. Column; 14. X-axis slide rail; 15. Z-axis drive box; 16. Probe head; 17. Fixing block; 2. Needle storage assembly; 21. Limiting slide groove; 22. Magnet; 23. Limiting slider; 24. Placement rack; 25. Iron sheet; 3. Protective assembly; 31. Guide groove; 32. Protective frame; 33. Protective top cover; 34. Guide block; 35. Hand lever; 4. Fixing assembly; 41. Rectangular opening; 42. Rectangular rod; 43. Hand pull plate; 44. Return spring; 51. Moving column; 52. Y-axis moving groove. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Example

[0021] like Figures 1-5 As shown, this utility model provides a technical solution: a high-precision coordinate measuring machine, including a worktable 1, a Y-axis transmission rail 11 fixedly connected to one side of the upper surface of the worktable 1, a sliding block 12 slidably connected to the Y-axis transmission rail 11, a column 13 fixedly connected to the upper surface of the sliding block 12, an X-axis slide rail 14 fixedly connected to the top side wall of the column 13, a Z-axis transmission box 15 slidably connected to the X-axis slide rail 14, a probe head 16 fixedly connected to the movable end of the Z-axis transmission box 15, a fixing block 17 fixedly installed on one side of the worktable 1, a needle storage assembly 2 for placing the probe head 16 provided on the top of the fixing block 17, and a protective assembly 3 for protecting the probe head 16 provided on one side of the fixing block 17. In specific use, this coordinate measuring machine can achieve high-precision measurement of the size, shape and position of the workpiece through a precise transmission mechanism (such as the Y-axis transmission rail 11, the X-axis slide rail 14, and the Z-axis transmission box 15) and a high-precision sensor.

[0022] As one implementation method in this embodiment, such as Figure 2 , Figure 3 and Figure 5As shown, the needle storage assembly 2 includes a limiting groove 21 opened on the top side wall of the fixing block 17. Multiple magnets 22 are arrayed and embedded on the inner side wall of the limiting groove 21. A limiting slider 23 is slidably connected to the limiting groove 21. A placement rack 24 is fixedly connected to one side of the limiting slider 23, and an iron plate 25 is embedded on the other side of the limiting slider 23. The limiting slider 23 is fixed in the limiting groove 21 by the magnets 22 and the iron plate 25. In actual use, the limiting slider 23 is inserted into the limiting groove 21, and then the limiting slider 23 is pushed. The limiting slider 23 overcomes the magnetic force between the magnets 22 and the iron plate 25, so that the limiting slider 23 slides along the limiting groove 21, and adjusts the position of the placement rack 24 storing the target probe head 16 to a suitable position, so as to facilitate the replacement of the probe head 16 at the connection part at the bottom of the Z-axis transmission box 15.

[0023] As one implementation method in this embodiment, such as Figure 3 and Figure 4 As shown, the protective component 3 includes two guide grooves 31 and a protective frame 32. The two guide grooves 31 are symmetrically opened laterally on the side wall of the fixing block 17. A guide block 34 adapted to the guide groove 31 is fixedly connected to the side wall of the protective frame 32. The guide block 34 slides in the guide groove 31. A protective top cover 33 is hinged to the top of the protective frame 32. A handle 35 is fixedly connected to the center of the upper end face of the protective top cover 33. A fixing component 4 for fixing the protective frame 32 is provided on the side wall of the fixing block 17 away from the protective frame 32. The fixing component 4 includes two rectangular openings 41 symmetrically opened on the fixing block 17. A rectangular rod 42 is inserted into each of the two rectangular openings 41. A pull plate 43 is fixed to the end of the two rectangular rods 42 away from the protective frame 32. A plurality of return springs 44 are horizontally arrayed and fixed on the side wall of the pull plate 43 near the fixing block 17. The other end of the plurality of return springs 44 is fixed to the side wall of the fixing block 17. During the measuring instrument's testing process, the protective frame 32 is located at the bottom of the fixed block 17 and will not affect the Z-axis transmission box 15's placement and removal of probe needles. After the testing is completed and multiple probe needles are idle, the protective frame 32 is manually pushed upwards until the probe needles are located inside the protective frame 32. During the upward movement of the protective frame 32, the pull plate 43 is pulled simultaneously, causing the pull plate 43 to move the rectangular rod 42 synchronously. When the protective frame 32 moves to the appropriate position, the pull plate 43 is released. After the pull plate 43 loses its tension, it is reset by the rebound force of the return spring 44, thus allowing the rectangular rod 42 to be inserted below the protective frame 32. The rectangular rod 42 provides support for the protective frame 32. The handle 35 is gently grasped, lifted upwards, and flipped over, so that the protective top cover 33 covers the protective frame 32. This can prevent foreign objects from entering the protective frame 32 and can also play a certain role in dust prevention.

[0024] As one implementation method in this embodiment, such as Figure 1As shown, a movable column 51 is fixedly connected to one side of the lower end face of the X-axis slide rail 14, and a Y-axis movable groove 52 is provided on one side of the upper end face of the worktable 1. The movable column 51 slides in the Y-axis movable groove 52. In actual use, the movable column 51 will move synchronously with the X-axis slide rail 14, and the movable column 51 will slide linearly along the Y-axis movable groove 52 provided on one side of the upper end face of the worktable 1.

[0025] Working principle: During the measuring instrument's detection process, the protective frame 32 is located at the bottom of the fixed block 17 and will not affect the Z-axis transmission box 15's placement and removal of probe needles. After the detection is completed and multiple probe needles are idle, the protective frame 32 is manually pushed upwards until the probe needles are located inside the protective frame 32. During the upward movement of the protective frame 32, the pull plate 43 is pulled simultaneously, causing the pull plate 43 to drive the rectangular rod 42 to move synchronously. When the protective frame 32 moves to the appropriate position, the pull plate 43 is released. After the pull plate 43 loses its tension, it is reset by the rebound force of the return spring 44, thus allowing the rectangular rod 42 to be inserted below the protective frame 32. The rectangular rod 42 provides support for the protective frame 32. Gently grasp the handle 35, lift it upwards and flip it over, so that the protective top cover 33 covers the protective frame 32. This can prevent foreign objects from entering the protective frame 32 and can also play a certain role in dust prevention.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A high-precision coordinate measuring machine, comprising a worktable (1), characterized in that: The workbench (1) is fixedly connected to a Y-axis drive rail (11) on one side of its upper end face. A sliding block (12) is slidably connected to the Y-axis drive rail (11). A column (13) is fixedly connected to the upper end face of the sliding block (12). An X-axis slide rail (14) is fixedly connected to the top side wall of the column (13). A Z-axis drive box (15) is slidably connected to the X-axis slide rail (14). A probe head (16) is fixedly connected to the movable end of the Z-axis drive box (15). A fixing block (17) is fixedly installed on one side of the workbench (1). A needle storage assembly (2) for placing the probe head (16) is provided on the top of the fixing block (17). A protective assembly (3) for protecting the probe head (16) is provided on one side of the fixing block (17).

2. The high-precision coordinate measuring machine according to claim 1, characterized in that: The needle storage assembly (2) includes a limiting groove (21) opened on the top side wall of the fixing block (17). Multiple magnets (22) are arrayed and embedded on the inner side wall of the limiting groove (21). A limiting slider (23) is slidably connected on the limiting groove (21). A placement rack (24) is fixedly connected to one side of the limiting slider (23). An iron sheet (25) is embedded on the other side of the limiting slider (23). The limiting slider (23) is fixed in the limiting groove (21) by the magnets (22) and the iron sheet (25).

3. The high-precision coordinate measuring machine according to claim 1, characterized in that: The protective component (3) includes two guide grooves (31) and a protective frame (32). The two guide grooves (31) are symmetrically opened laterally on the side wall of the fixing block (17). A guide block (34) adapted to the guide groove (31) is fixedly connected to the side wall of the protective frame (32). The guide block (34) slides in the guide groove (31). A protective top cover (33) is hinged to the top of the protective frame (32). A fixing component (4) for fixing the protective frame (32) is provided on the side wall of the fixing block (17) away from the protective frame (32).

4. A high-precision coordinate measuring machine according to claim 3, characterized in that: The fixing component (4) includes two rectangular openings (41) symmetrically opened on the fixing block (17). A rectangular rod (42) is inserted into each of the two rectangular openings (41). A pull plate (43) is fixed to the end of the two rectangular rods (42) away from the protective frame (32). A plurality of return springs (44) are horizontally arranged on the side wall of the pull plate (43) near the fixing block (17). The other end of the plurality of return springs (44) is fixed to the side wall of the fixing block (17).

5. A high-precision coordinate measuring machine according to claim 3, characterized in that: A handle (35) is fixedly connected to the center of the upper end face of the protective top cover (33).

6. A high-precision coordinate measuring machine according to claim 1, characterized in that: A movable column (51) is fixedly connected to one side of the lower end face of the X-axis slide rail (14), and a Y-axis movable groove (52) is opened on one side of the upper end face of the worktable (1). The movable column (51) slides in the Y-axis movable groove (52).

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