Measuring head and measuring seat mechanism of three-coordinate measuring machine

Abstract

The utility model discloses a measuring head and measuring seat mechanism of a three-coordinate measuring machine, and relates to the technical field of three-coordinate measurement, the measuring head and measuring seat mechanism comprises a measuring seat body and a measuring head body, the measuring seat body is internally provided with a square groove, the side wall of the square groove is provided with a rotatable rotating rod, one side of the rotating rod is fixedly connected with a first helical gear, and the other side of the rotating rod is fixedly connected with a second helical gear. A rotating column capable of rotating is installed on the top face of the square groove, a second bevel gear and a third bevel gear are fixedly installed on the outer wall of the rotating column, a special-shaped groove which is integrally in an L shape is formed in the side wall of the square groove, and a rotatable threaded rod is installed on the inner wall of the special-shaped groove; compared with an existing measuring head and measuring seat mechanism, the measuring head and measuring seat mechanism has the advantages that the replacement speed is increased, the difficulty in replacing the measuring head body is reduced, the position after replacement is not easy to change, the measurement precision of the device is not influenced by replacement of the rotating column, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-coordinate measurement, in particular to a probe and seat mechanism of a three-coordinate measuring machine. Background Art

[0002] In modern manufacturing, coordinate measuring machines (CMMs), as precision measuring equipment, are widely used in aerospace, automotive manufacturing, precision machining, and other fields. Their core component, the probe and head mechanism, is crucial for achieving efficient and accurate measurement.

[0003] At present, most three-dimensional coordinate measuring machine probe and measuring head mechanisms on the market use manual or semi-automatic methods to replace the probe, which is cumbersome and time-consuming. In addition, if the size of the probe connecting base is not completely compatible with the measuring head during the replacement process, the installation accuracy cannot be guaranteed. Then, the positioning accuracy after the probe is replaced can only rely on the operator's experience and skill level, making it difficult to ensure the stability and reliability of the measurement results.

[0004] In view of this, a probe head mechanism of a three-dimensional coordinate measuring machine is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of the present invention is to provide a probe and measuring head mechanism for a three-dimensional coordinate measuring machine, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides a probe head mechanism of a three-dimensional coordinate measuring machine, including a probe head body and a probe head body, a square groove is opened inside the probe head body, a rotatable rotating rod is installed on the side wall of the square groove, one side of the rotating rod is fixedly connected to the first bevel gear, a rotatable rotating column is installed on the top surface of the square groove, a second bevel gear and a third bevel gear are fixedly installed on the outer wall of the rotating column, a special-shaped groove with an overall "L" shape is opened on the side wall of the square groove, a rotatable threaded rod is installed on the inner wall of the special-shaped groove, one side of the threaded rod is fixedly connected to the fourth bevel gear, a special-shaped block is threadedly connected to the outer wall of the threaded rod, and a support block is provided on the side of the special-shaped block close to the third bevel gear, and the specific shape of the special-shaped block is also "L"-shaped and adapted to the special-shaped groove.

[0007] Furthermore, the first helical gear and the second helical gear are meshed with each other, and the fourth helical gear and the third helical gear are meshed with each other.

[0008] Furthermore, the specific number of the fourth helical gears is four, and the four fourth helical gears are engaged with the third helical gear at the same time.

[0009] Furthermore, a telescopic rod is fixedly connected to one side of the special-shaped block close to the third bevel gear, the other end of the telescopic rod is fixedly connected to the supporting block, and a telescopic spring is fixedly connected between the supporting block and the special-shaped block.

[0010] Furthermore, the bottom surface of the supporting block is inclined from outside to inside, wherein the highest point of the bottom surface is close to one end of the third bevel gear.

[0011] Furthermore, among the parts of the special-shaped blocks that are threadedly connected to the outer wall of the threaded rod, there is always a part located inside the special-shaped groove.

[0012] Furthermore, one end of the rotating rod is fixedly connected to a knob, and a plurality of arc-shaped grooves are provided on the edge of the knob.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] Compared with the existing probe head mechanism, it not only speeds up the replacement rate and reduces the difficulty of replacing the probe body, but also ensures that the position after replacement will not change easily, ensuring that replacing the rotating column will not affect the measurement accuracy of the device, and increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 2 It is a structural diagram of the lower side of the utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 4 It is a structural diagram of the probe body in the utility model.

[0019] In the figure: 1. Probe body; 2. Probe body; 3. Knob; 4. Rotating rod; 5. First bevel gear; 6. Rotating column; 7. Second bevel gear; 8. Third bevel gear; 9. Fourth bevel gear; 10. Threaded rod; 11. Special-shaped groove; 12. Special-shaped block; 13. Telescopic rod; 14. Telescopic spring; 15. Support block; 16. Limiting groove. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] See Figure 1-4 A probe head mechanism of a three-coordinate measuring machine includes a head body 1 and a probe body 2. A square groove is provided inside the head body 1, and a rotatable rotating rod 4 is installed on the side wall of the square groove. A first bevel gear 5 is fixedly connected to one side of the rotating rod 4, and a rotatable rotating column 6 is installed on the top surface of the square groove. A second bevel gear 7 and a third bevel gear 8 are fixedly installed on the outer wall of the rotating column 6. A special-shaped groove 11 with an overall "L" shape is provided on the side wall of the square groove, and a rotatable threaded rod 10 is installed on the inner wall of the special-shaped groove 11. A fourth bevel gear 9 is fixedly connected to one side of the threaded rod 10, and a special-shaped block 12 is threaded on the outer wall of the threaded rod 10. A supporting block 15 is provided on the side of the special-shaped block 12 close to the third bevel gear 8. The specific shape of the special-shaped block 12 is also "L"-shaped and is adapted to the special-shaped groove 11.

[0023] Furthermore, the first bevel gear 5 is meshed with the second bevel gear 7, and the fourth bevel gear 9 is meshed with the third bevel gear 8. By setting the first bevel gear 5 and the second bevel gear 7 to mesh with each other, and the fourth bevel gear 9 and the third bevel gear 8 to mesh with each other, the rotating rod 4 can drive the second bevel gear 7 to rotate through the rotation of the first bevel gear 5 after rotation, and the second bevel gear 7 and the third bevel gear 8 are simultaneously installed on the outer wall of the rotating column 6. Therefore, after the rotating rod 4 rotates, the third bevel gear 8 will rotate and drive the fourth bevel gear 9 to rotate.

[0024] It should be noted that the specific number of the fourth bevel gears 9 is four, and the four fourth bevel gears 9 are engaged with the third bevel gear 8 at the same time. Therefore, after the third bevel gear 8 rotates, the four fourth bevel gears 9 can be driven to rotate at the same time, and the fourth bevel gear 9 is fixedly connected to one side of the threaded rod 10. Therefore, the final effect achieved is: the user drives the rotating rod 4 to rotate, which can simultaneously drive the four threaded rods 10 to rotate.

[0025] Furthermore, a telescopic rod 13 is fixedly connected to one side of the special-shaped block 12 close to the third bevel gear 8 , and the other end of the telescopic rod 13 is fixedly connected to the supporting block 15 . A telescopic spring 14 is fixedly connected between the supporting block 15 and the special-shaped block 12 .

[0026] By providing the telescopic rod 13 and the telescopic spring 14, when the device faces a limiting groove 16 with a special shape, the telescopic rod 13 and the telescopic spring 14 can still firmly clamp the limiting groove 16 between the multiple supporting blocks 15, so that the device can continue to be used normally.

[0027] In addition, the bottom surface of the supporting block 15 is inclined from the outside to the inside, wherein the highest point of the bottom surface is close to one end of the third bevel gear 8 .

[0028] By setting the bottom surface of the supporting block 15 to be inclined from the outside to the inside, wherein the highest point of the bottom surface is close to one end of the third bevel gear 8, when the user places the probe body 2 and the limit slot 16 between multiple supporting blocks 15, if the spacing between the multiple supporting blocks 15 is not enough to pass through the limit slot 16, and the difference is not large, the limit slot 16 can be directly pushed upward, and the supporting block 15 in the inclined state will be pushed and moved outward, so that the user can replace the limit slot 16 and the probe body 2 without adjusting the device, thereby increasing the practicality of the device.

[0029] It should also be noted that among the parts of the special-shaped block 12 that are threadedly connected to the outer wall of the threaded rod 10, there is always a part inside the special-shaped groove 11. This arrangement ensures that the special-shaped block 12 is always limited by the special-shaped groove 11 and cannot rotate with the threaded rod 10. It will only move during the rotation of the threaded rod 10.

[0030] In addition, one end of the rotating rod 4 is fixedly connected to the knob 3, and a plurality of arc-shaped grooves are provided on the edge of the knob 3. This arrangement allows the user to easily control the rotating rod 4 to rotate.

[0031] During specific implementation, when the user needs to quickly and accurately complete the replacement of the probe body 2, the user first needs to turn the knob 3. After the knob 3 is turned, it will drive the first bevel gear 5 to rotate through the rotating rod 4. After the first bevel gear 5 is rotated, it will drive the third bevel gear 8 to rotate through the second bevel gear 7. The third bevel gear 8 is engaged with the four fourth bevel gears 9 at the same time. Therefore, the threaded rod 10 fixedly connected to the fourth bevel gear 9 will also rotate. After the threaded rod 10 rotates, the special-shaped block 12 threadedly connected to the outer wall of the threaded rod 10 will be driven to move. After the multiple special-shaped blocks 12 move in the direction away from the third bevel gear 8, they can be disengaged from the inside of the limit slot 16, so that the probe body 2 can be easily disengaged.

[0032] When the new probe body 2 needs to be replaced, the limit slot 16 above the probe body 2 is placed in the predetermined position, and then the knob 3 is rotated in the reverse direction so that the four support blocks 15 can move toward the position of the third bevel gear 8 at the same time. When the four support blocks 15 are simultaneously engaged with the limit slot 16, the replacement of the probe body 2 can be completed.

[0033] During the process, the four supporting blocks 15 move synchronously, which not only can quickly complete the replacement of the probe body 2, but also the fixing process has a self-centering effect. Compared with the existing probe head mechanism, it not only speeds up the replacement rate and reduces the difficulty of replacing the probe body 2, but also ensures that the position after replacement will not be easily changed, ensuring that the replacement of the rotating column 6 will not affect the measurement accuracy of the device, thereby increasing the practicality of the device.

[0034] Working principle: When the user needs to quickly and accurately complete the replacement of the probe body 2, the user first needs to turn the knob 3. After the knob 3 is turned, it will drive the first bevel gear 5 to rotate through the rotating rod 4. After the first bevel gear 5 is rotated, it will drive the third bevel gear 8 to rotate through the second bevel gear 7. The third bevel gear 8 is engaged with the four fourth bevel gears 9 at the same time. Therefore, the threaded rod 10 fixedly connected to the fourth bevel gear 9 will also rotate. After the threaded rod 10 rotates, the special-shaped block 12 threadedly connected to the outer wall of the threaded rod 10 will be driven to move. After the multiple special-shaped blocks 12 move in the direction away from the third bevel gear 8, they can be disengaged from the inside of the limit slot 16, so that the probe body 2 can be easily disengaged.

[0035] When the new probe body 2 needs to be replaced, the limit slot 16 above the probe body 2 is placed in the predetermined position, and then the knob 3 is rotated in the reverse direction so that the four support blocks 15 can move toward the position of the third bevel gear 8 at the same time. When the four support blocks 15 are simultaneously engaged with the limit slot 16, the replacement of the probe body 2 can be completed.

[0036] During the process, the four supporting blocks 15 move synchronously, which not only can quickly complete the replacement of the probe body 2, but also the fixing process has a self-centering effect. Compared with the existing probe head mechanism, it not only speeds up the replacement rate and reduces the difficulty of replacing the probe body 2, but also ensures that the position after replacement will not be easily changed, ensuring that the replacement of the rotating column 6 will not affect the measurement accuracy of the device, thereby increasing the practicality of the device.

Claims

1. A probe head mechanism for a three-coordinate measuring machine, comprising a head body (1) and a probe body (2), characterized in that: A square groove is provided inside the measuring seat body (1), a rotatable rotating rod (4) is installed on the side wall of the square groove, a first bevel gear (5) is fixedly connected to one side of the rotating rod (4), a rotatable rotating column (6) is installed on the top surface of the square groove, a second bevel gear (7) and a third bevel gear (8) are fixedly installed on the outer wall of the rotating column (6), a special-shaped groove (11) which is "L" shaped as a whole is provided on the side wall of the square groove, a rotatable threaded rod (10) is installed on the inner wall of the special-shaped groove (11), a fourth bevel gear (9) is fixedly connected to one side of the threaded rod (10), a special-shaped block (12) is threadedly connected to the outer wall of the threaded rod (10), a supporting block (15) is provided on the side of the special-shaped block (12) close to the third bevel gear (8), and the specific shape of the special-shaped block (12) is also "L" shaped and is adapted to the special-shaped groove (11).

2. The probe head mechanism of a coordinate measuring machine according to claim 1, characterized in that: The first helical gear (5) and the second helical gear (7) are meshed with each other, and the fourth helical gear (9) and the third helical gear (8) are meshed with each other.

3. The probe head mechanism of a three-dimensional coordinate measuring machine according to claim 2, characterized in that: The specific number of the fourth bevel gears (9) is four, and the four fourth bevel gears (9) are engaged with the third bevel gear (8) at the same time.

4. The probe head mechanism of a three-dimensional coordinate measuring machine according to claim 3, characterized in that: A telescopic rod (13) is fixedly connected to one side of the special-shaped block (12) close to the third bevel gear (8), the other end of the telescopic rod (13) is fixedly connected to a supporting block (15), and a telescopic spring (14) is fixedly connected between the supporting block (15) and the special-shaped block (12).

5. The probe head mechanism of a three-dimensional coordinate measuring machine according to claim 4, characterized in that: The bottom surface of the supporting block (15) is tilted from outside to inside, wherein the highest point of the bottom surface is close to one end of the third bevel gear (8).

6. The probe head mechanism of a three-dimensional coordinate measuring machine according to claim 5, characterized in that: The portion of the special-shaped block (12) that is threadedly connected to the outer wall of the threaded rod (10) always has a portion located inside the special-shaped groove (11).

7. The probe head mechanism of a three-dimensional coordinate measuring machine according to claim 1, characterized in that: One end of the rotating rod (4) is fixedly connected to a knob (3), and a plurality of arc-shaped grooves are provided at the edge of the knob (3).

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