Reducing mechanism for three-coordinate measuring machine
By introducing four partial toothed sprockets and a transmission mechanism into the coordinate measuring machine, the transmission ratio can be flexibly adjusted, solving the problem that traditional reduction mechanisms cannot adapt to different measurement tasks and improving measurement accuracy and efficiency.
Patent Information
- Application Number
- CN202520293782.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Traditional coordinate measuring machines (CMMs) have a fixed gear ratio in their reduction mechanism, which cannot adapt to the needs of different measurement tasks, resulting in limited measurement accuracy and efficiency.
A reduction mechanism comprising four toothed sprockets and related transmission mechanisms was designed. The transmission ratio can be flexibly adjusted by controlling the adjustment of the toothed sprocket spacing with a knob.
This improves the applicability and measurement accuracy of the deceleration mechanism in different measurement scenarios, and enhances the practicality of the device.
Smart Images
Figure CN223814306U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to measuring instrument technical field, concretely is a kind of deceleration mechanism for three coordinate measuring machine. BACKGROUND
[0002] Three coordinate measuring machine as precision measuring equipment, is widely used in mechanical manufacturing, aerospace, automobile manufacturing and other fields, for measuring the geometric dimensions and shape of complex parts.Deceleration mechanism is an important component of three coordinate measuring machine, responsible for the high-speed rotation of motor is converted into low-speed high-torque output, to meet the requirements of measuring machine to motion accuracy.
[0003] However, the conventional deceleration mechanism often has fixed transmission ratio, cannot adapt to the needs of different measurement tasks, limit the flexibility and precision of measuring machine, in complex and changeable measurement environment, fixed transmission ratio's deceleration mechanism can not adapt to different measurement needs, leading to measurement precision decline will directly affect the final test result.
[0004] Therefore, a deceleration mechanism for three coordinate measuring machine is provided to overcome the above-mentioned defects. SUMMARY
[0005] The purpose of the utility model is to provide a deceleration mechanism for three coordinate measuring machine to solve the problems raised in the background art.
[0006] To solve the above technical problems, the utility model provides a deceleration mechanism for three coordinate measuring machine, which comprises a reducer shell, an output port and an input port are provided on the outer wall of the reducer shell, a rotating rod is fixedly connected inside the input port, a drive sprocket is connected to one end of the rotating rod, a rotating disc is fixedly connected on one side of the output port, an installation block is fixedly installed on the side wall of the rotating disc, a rotatable threaded rod is installed on one side of the installation block, a second helical gear is fixedly connected to the other side of the threaded rod, a rotatable first helical gear is installed at the middle position of the side wall of the rotating disc, the first helical gear is engaged with the second helical gear, a square moving block is threadedly connected to the outer wall of the threaded rod, an arc-shaped partial sprocket is fixedly connected to one end of the moving block, and a chain is simultaneously engaged on the outer wall of the drive sprocket and the partial sprocket.
[0007] Further, the number of the partial sprocket is four, and the four partial sprockets can jointly form a complete sprocket.
[0008] Further, the number of the second helical gear is also four, and the four second helical gears are simultaneously engaged with the first helical gear.
[0009] Further, one side of the first helical gear is fixedly connected with a rotating column, another side of the rotating column is fixedly connected with a knob, a plurality of arc-shaped grooves are formed in the outer wall of the knob.
[0010] Further, the inner wall bottom of the reducer housing is fixedly installed with an extension rod, the top end of the extension rod is fixedly connected with a supporting block, one end of the supporting block is fixedly connected with a supporting sprocket, the supporting sprocket is engaged with a chain, and the supporting block and the inner wall bottom of the reducer housing are fixedly connected with an extension spring.
[0011] Further, the inner wall bottom of the reducer housing is fixedly installed with an extension rod, the top end of the extension rod is fixedly connected with a supporting block, one end of the supporting block is fixedly connected with a supporting sprocket, the supporting sprocket is engaged with a chain, and the supporting block and the inner wall bottom of the reducer housing are fixedly connected with an extension spring.
[0012] Further, the rotating column, the driving sprocket and the supporting sprocket are all in the same horizontal plane and have the same thickness.
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] By setting four partial tooth sprockets and setting relevant transmission mechanisms, a user can control the spacing between the four partial tooth sprockets, and the size of the driving sprocket is always unchanged, so that the user can easily change the transmission ratio in the reducer housing, the device can be used in different test scenes, the application range of the device is increased, and the practicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structural schematic view of the utility model;
[0016] Figure 2 It is a structural schematic view of the front side of the utility model;
[0017] Figure 3 It is a structural schematic view of the internal structure of the utility model;
[0018] Figure 4 It is a structural schematic view of the rotating disc in the utility model.
[0019] In the drawing: 1, reducer housing; 2, input port; 3, output port; 4, knob; 5, partition plate; 6, rotating rod; 7, rotating column; 8, driving sprocket; 9, partial tooth sprocket; 10, rotating disc; 11, first helical gear; 12, mounting block; 13, threaded rod; 14, moving block; 15, second helical gear; 16, chain; 17, supporting sprocket; 18, supporting block; 19, extension rod; 20, extension spring. DETAILED DESCRIPTION
[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0021] Embodiment one
[0022] Referring to Figures 1-4 A speed reducer mechanism for a three-coordinate measuring machine, comprising a speed reducer shell 1, an output port 3 and an input port 2 are arranged on the outer wall of the speed reducer shell 1, a rotating rod 6 is fixedly connected inside the input port 2, a driving sprocket 8 is connected to one end of the rotating rod 6, a rotating disc 10 is fixedly connected to one side of the output port 3, an installation block 12 is fixedly installed on the side wall of the rotating disc 10, a rotatable threaded rod 13 is installed on one side of the installation block 12, a second helical gear 15 is fixedly connected to the other side of the threaded rod 13, a rotatable first helical gear 11 is installed at the middle position of the side wall of the rotating disc 10, the first helical gear 11 is engaged with the second helical gear 15, a square moving block 14 is threadedly connected to the outer wall of the threaded rod 13, an arc-shaped partial toothed sprocket 9 is fixedly connected to one end of the moving block 14, and a chain 16 is simultaneously engaged on the outer wall of the driving sprocket 8 and the partial toothed sprocket 9.
[0023] Further, the specific number of the partial toothed sprockets 9 is four, and the four partial toothed sprockets 9 can jointly form a complete sprocket, and the number of the second helical gears 15 is also four, and the four second helical gears 15 are simultaneously engaged with the first helical gear 11.
[0024] By arranging four partial toothed sprockets 9 to jointly form a complete sprocket, the device can remain stable during adjustment and is not prone to disconnection, and by arranging four second helical gears 15 to be simultaneously engaged with the first helical gear 11, the first helical gear 11 can control the rotation of the four second helical gears 15 after rotation, so that the control of the device becomes simpler.
[0025] Further, an extension rod 19 is fixedly installed on the inner wall bottom of the speed reducer shell 1, a supporting block 18 is fixedly connected to the top end of the extension rod 19, a supporting sprocket 17 is fixedly connected to one end of the supporting block 18, the supporting sprocket 17 is engaged with the chain 16, and a telescopic spring 20 is fixedly connected between the supporting block 18 and the inner wall bottom of the speed reducer shell 1.
[0026] By setting the support sprocket 17 and the support block 18, and setting the telescopic spring 20 and the telescopic rod 19 at the bottom of the support block 18, the inner diameter between the plurality of partial sprocket 9 is adjusted to be smaller, and when the chain 16 is loose, the support sprocket 17 can resist the chain 16 by the elastic force of the telescopic spring 20, so that the chain 16 is always in a relatively tight state and can continue to run.
[0027] In addition, the partition plate 5 is fixedly installed in the middle position of the inside of the speed reducer shell 1, the side wall of the partition plate 5 is provided with a limiting groove, and the support block 18 is located in the limiting groove.
[0028] In addition, the first helical gear 11 is fixedly connected with a rotating column 7 on one side, the rotating column 7 is fixedly connected with a knob 4 on the other side, a plurality of arc-shaped grooves are formed in the outer wall of the knob 4, and the rotating column 7, the drive sprocket 8 and the support sprocket 17 are all located on the same horizontal plane and have the same thickness.
[0029] By setting the plurality of arc-shaped grooves in the outer wall of the knob 4, the knob 4 can be more easily rotated.
[0030] In specific implementation, when the conventional speed reducer is applied to a three-coordinate measuring machine, the use of the three-coordinate measuring machine may be affected due to the fixed transmission ratio. The traditional speed reducer generally has a fixed transmission ratio and cannot be adjusted according to the requirements of a measurement task, which causes the output speed and torque of the speed reducer to be unable to meet the requirements in some measurement scenarios, thereby affecting the measurement accuracy and efficiency.
[0031] In the utility model, when the user needs different transmission ratios to meet different use environments, the user only needs to rotate the knob 4, drive the rotating column 7 and the first helical gear 11 to rotate, drive the four second helical gears 15 to rotate mechanically after the first helical gear 11 rotates, and the second helical gears 15 are fixedly connected with the threaded rod 13. The outer wall of the threaded rod 13 is threadedly connected with the moving block 14, one side of the moving block 14 is connected with the partial sprocket 9, so that the user can drive the four partial sprockets 9 to move close to each other or move away from each other after rotating the knob 4.
[0032] During the process that the four partial sprockets 9 move close to each other or move away from each other, the outer diameter of the drive sprocket 8 does not change, but the outer diameter of the sprocket composed of the four partial sprockets 9 changes due to the adjustment of the user, and at this time, the transmission ratio in the speed reducer shell 1 is adjusted.
[0033] By setting four partial tooth sprocket 9, and set the relevant transmission mechanism makes the user can control the four partial tooth sprocket 9 between the spacing, while setting the size of the drive sprocket 8 is always the same, the user can easily complete for the change of transmission ratio in the reducer shell 1, make the device can be used in different test scene, increase the scope of application of the device, improve the practicability of the device.
[0034] Working principle: when the conventional reducer is applied to three coordinate measuring machine, because its fixed transmission ratio may cause the use of three coordinate measuring machine is affected, the traditional reduction mechanism usually has a fixed transmission ratio, can't adjust according to the demand of measurement task, this leads to in some measurement scene, the output speed and torque of the reduction mechanism may not meet the requirements, influence measurement accuracy and efficiency.
[0035] And in the utility model, when the user needs different transmission ratio to meet different use environment, only need to rotate the knob 4, drive rotating column 7 and first helical gear 11 to rotate through knob 4, after the rotation of first helical gear 11 will drive four second helical gear 15 mechanical energy rotation, and second helical gear 15 is fixedly connected with threaded rod 13, the outer wall of threaded rod 13 has thread connection movable block 14, one side of movable block 14 connects partial tooth sprocket 9, therefore after the user rotates the knob 4, four partial tooth sprocket 9 can be pushed to each other or is mutually far away.
[0036] In the process of four partial tooth sprocket 9 mutually close or far away, because the outer diameter of drive sprocket 8 does not change, and the outer diameter of the sprocket composed of four partial tooth sprocket 9 is changed due to the adjustment of the user, at this time the transmission ratio in the reducer shell 1 is adjusted.
[0037] By setting four partial tooth sprocket 9, and set the relevant transmission mechanism makes the user can control the four partial tooth sprocket 9 between the spacing, while setting the size of the drive sprocket 8 is always the same, the user can easily complete for the change of transmission ratio in the reducer shell 1, make the device can be used in different test scene, increase the scope of application of the device, improve the practicability of the device.
Claims
1. A speed reducer mechanism for a three-coordinate measuring machine, comprising a speed reducer housing (1), an output port (3) and an input port (2) are arranged on the outer wall of the speed reducer housing (1), an inner part of the input port (2) is fixedly connected with a rotating rod (6), one end of the rotating rod (6) is connected with a driving sprocket (8), characterized in that, One side of the output port (3) is fixedly connected with a rotating disc (10), a mounting block (12) is fixedly installed on the side wall of the rotating disc (10), a rotatable threaded rod (13) is installed on one side of the mounting block (12), a second helical gear (15) is fixedly connected to the other side of the threaded rod (13), a rotatable first helical gear (11) is installed at the middle position of the side wall of the rotating disc (10), the first helical gear (11) is engaged with the second helical gear (15), a square moving block (14) is threadedly connected to the outer wall of the threaded rod (13), an arc-shaped partial toothed chain wheel (9) is fixedly connected to one end of the moving block (14), and the partial toothed chain wheel (9) is simultaneously engaged with a chain (16) on the outer wall of a driving sprocket (8).
2. A deceleration mechanism for a three-coordinate measuring machine according to claim 1, characterized in that: The number of the partial toothed chain wheels (9) is four, and the four partial toothed chain wheels (9) can jointly form a complete sprocket.
3. A deceleration mechanism for a three-coordinate measuring machine according to claim 2, characterized in that: The number of the second helical gears (15) is also four, and the four second helical gears (15) are simultaneously engaged with the first helical gear (11).
4. A deceleration mechanism for a three-coordinate measuring machine according to claim 3, characterized in that: One side of the first helical gear (11) is fixedly connected with a rotating column (7), the other side of the rotating column (7) is fixedly connected with a knob (4), and a plurality of arc-shaped grooves are formed in the outer wall of the knob (4).
5. A deceleration mechanism for a three- coordinate measuring machine according to claim 4, characterized in that: A telescopic rod (19) is fixedly installed at the bottom of the inner wall of the speed reducer housing (1), the top end of the telescopic rod (19) is fixedly connected with a supporting block (18), one end of the supporting block (18) is fixedly connected with a supporting sprocket (17), the supporting sprocket (17) is engaged with the chain (16), and a telescopic spring (20) is fixedly connected between the supporting block (18) and the bottom of the inner wall of the speed reducer housing (1).
6. A deceleration mechanism for a three-coordinate measuring machine according to claim 5, characterized in that: A partition plate (5) is fixedly installed at the middle position of the inside of the speed reducer housing (1), a limiting groove is formed in the side wall of the partition plate (5), and the supporting block (18) is located inside the limiting groove.
7. A decelerating mechanism for a three-coordinate measuring machine according to claim 6, characterized in that: The rotating column (7), the driving sprocket (8) and the supporting sprocket (17) are all located on the same horizontal plane and have the same thickness.