Transmission system of laser tool

Abstract

The utility model provides a transmission system of a laser tool. The transmission system comprises a guide rail, an output wheel, a transmission structure and a driving structure. The guide rail is connected with the output wheel in an embedded mode, a swallow-tail-shaped groove is formed in the guide rail, and the swallow-tail-shaped groove forms a closed path and is used for limiting and guiding the output wheel; the end, matched with the guide rail, of the output wheel is provided with a circle of swallow-tail-shaped tenon, the swallow-tail-shaped tenon is embedded into and matched with a swallow-tail-shaped groove in the guide rail, and the output wheel is driven by the transmission structure to slide along a closed path of the guide rail. And the transmission structure is provided with at least two stages of planetary structures. According to the transmission system of the laser tool, the bearing capacity of a transmission structure, the stability of the output wheel, the consistency and the reliability of a rotation gap are improved, the assembly difficulty of the transmission system is reduced, and meanwhile the operability is improved.

Description

Technical Field

[0001] The utility model relates to the field of building lofting, in particular to a transmission system of a laser tool. Background Art

[0002] The rotating base of traditional laser tools mostly uses single-stage or multi-stage gears to realize the transmission structure. The transmission precision is not high, the transmission is not stable, and the forward and reverse backlash is large. On the other hand, the assembly process of multi-stage gears is high, the processing requirements of transmission parts are relatively high, and the cost is high, the volume is large, the energy consumption is high, the efficiency is low, and the noise is high. Overall, the traditional structure is difficult to meet the market demand for high precision. Utility Model Content

[0003] In order to solve the defects and shortcomings of the above-mentioned prior art, the utility model provides a transmission system for a laser tool, including a guide rail, an output wheel, a transmission structure and a drive structure.

[0004] The driving structure is a power output source; the transmission structure connects the driving structure and the output wheel, the transmission structure rotates under the drive of the driving structure, and the transmission structure drives the output wheel to rotate; the guide rail is an annular cylinder, which is connected with the output wheel in an inlaid manner, and the guide rail is provided with a dovetail groove, and the dovetail groove constitutes a closed path for limiting and guiding the output wheel; the output wheel is an annular cylinder, and one end of the output wheel that matches the guide rail has a circle of dovetail tenons, and the dovetail tenons are embedded in the dovetail groove on the guide rail and are adapted to each other, and the output wheel slides along the closed path of the guide rail under the drive of the transmission structure, and the other end of the output wheel is connected to a laser tool, and the output wheel is used to drive the laser tool to rotate. Among them, the groove on the guide rail is dovetail-shaped; the tenon on the output wheel is dovetail-shaped, so that the shape of the tenon is adapted to the shape of the groove on the guide rail.

[0005] Preferably, the transmission structure has at least two-stage planetary structures, including a sun gear, an end cover, a first planetary gear set, a first planet carrier, a second planet carrier, a second planetary gear set, a first inner gear ring, and a second inner gear ring; the first planetary gear set includes a plurality of gears of the same specifications; the second planetary gear set includes a plurality of gears of the same specifications; a first planetary gear shaft corresponding to the first planetary gear set is provided on the side of the first planetary gear set facing the first planetary gear set, and a sun gear shaft is provided at the center of the side of the first planet carrier facing the second planet carrier; a second planetary gear shaft corresponding to the second planetary gear set is provided on the second planet carrier; the first planetary gear set is mounted on the first planet carrier through the first planetary gear shaft, and the first planetary gear shaft The planetary gear set is meshed with the sun gear and the end cover to form a first-stage planetary structure; the sun gear drives the first planetary gear set to rotate, and the first planetary gear set drives the first planet carrier to rotate through the first planetary gear shaft; the second planetary gear set is installed on the second planet carrier through the second planetary gear shaft, and the second planetary gear set is meshed with the sun gear shaft, the first inner gear ring and the second inner gear ring on the first planet carrier to form a second-stage planetary structure; the first planet carrier drives the second planetary gear set to rotate through the sun gear shaft, and the second planetary gear set drives the first inner gear ring and the second inner gear ring to rotate; teeth are arranged on the outer side of the first inner gear ring, and the first inner gear ring is meshed with the output wheel through the teeth on the outer side, and the first inner gear ring drives the output wheel to rotate.

[0006] Optionally, a gear ratio setting of the second inner gear ring is different from a gear ratio setting of the first inner gear ring.

[0007] Optionally, more internal gear rings are provided in the transmission structure, and the gear ratio setting of the additional internal gear rings is different from the gear ratio setting of the first internal gear ring and the second internal gear ring.

[0008] Optionally, the transmission system of the laser tool also includes a probe; the probe is arranged on the output wheel and the transmission structure, connected to the laser tool, and is used to collect status information of the output wheel and the transmission structure and send the status information to the laser tool.

[0009] The transmission system of the laser tool provided by the utility model can improve the load-bearing capacity of the transmission structure and the stability of the output wheel, the consistency and reliability of the rotary clearance, reduce the difficulty of assembling the transmission system and improve the operability, and can also alleviate the impact damage to the gears in some special falling conditions. The probe method is used to collect data of the transmission system, which is not easy to fail and can also improve the sealing protection of the transmission system, and has better dust and water resistance. Through the improvements in the above aspects, the overall user experience of the laser tool is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A top perspective view of the drive train of a laser tool.

[0011] Figure 2 A bottom perspective view of the drive train of the laser tool.

[0012] Figure 3 Exploded view of the transmission system of the laser tool.

[0013] Figure markings: 1-guide rail, 2-output wheel, 3-gear set, 4-motor, 11-housing, 31-sun gear, 32-end cover, 33-first planetary gear set, 34-first planetary carrier, 35-second planetary carrier, 36-second planetary gear set, 37-first inner ring gear, 38-second inner ring gear, 341-first planetary gear shaft, 342-sun gear shaft, 351-second planetary gear shaft, 41-transmission shaft. DETAILED DESCRIPTION

[0014] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0016] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms "a", "the", and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0017] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0019] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0020] like Figure 3 As shown, the utility model provides a transmission system for a laser tool, comprising a guide rail 1, an output wheel 2, a gear set 3 and a motor 4.

[0021] The guide rail 1 is an annular ring with a dovetail groove, and the dovetail groove forms an annular path, which is engaged with the output wheel 2 to guide and limit the output wheel 2. A shell 11 is arranged on the outside of the guide rail 1. At the intersection of the shell 11 and the outside of the guide rail 1, there is a transverse groove connecting the inside of the shell 11 and the dovetail groove of the guide rail 1.

[0022] The output wheel 2 is an annular ring, and the first end of the output wheel 2 is connected to the base of the laser tool to drive the laser tool to rotate. The second end of the output wheel 2 is embedded in the slot of the guide rail 1 through a tenon. The tenon at the second end of the output wheel 2 is a circle of dovetail shape, which cooperates with the dovetail groove of the guide rail 1, so that the output wheel 2 can rotate smoothly under the guidance of the dovetail groove of the guide rail 1. Teeth are provided on the dovetail tenon of the output wheel 2 close to the shell 11. A probe connected to the negative pole of the power supply is provided on the output wheel 2. The use of electronic probes, on the one hand, further improves the reliability of the mechanical and software of the transmission system; on the other hand, it has better sealing protection, so that the transmission system has better dust and water resistance.

[0023] The gear set 3 is a two-stage planetary structure, connecting the motor 4 and the output wheel 2 for transmission. The gear set 3 includes a sun gear 31, an end cover 32, a first planetary gear set 33, a first planet carrier 34, a second planet carrier 35, a second planetary gear set 36, a first inner ring gear 37, and a second inner ring gear 38. The sun gear 31, the end cover 32, the first planetary gear set 33 and the first planet carrier 34 constitute a first-stage planetary structure; the first planet carrier 34, the second planet carrier 35, the second planetary gear set 36, the first inner ring gear 37 and the second inner ring gear 38 constitute a second-stage planetary structure.

[0024] The end cover 32 is disposed on the side of the motor 4 facing the housing 11, and has an annular protrusion on the side of the end cover 32 facing away from the motor 4, and teeth are disposed inside the annular protrusion. The end cover 32 has a hole at the center of the annular protrusion.

[0025] The housing 11 and the end cover 32 cooperate to form a space for accommodating the remaining components of the gear set 3. The housing 11 and the end cover 32 are provided with corresponding screw holes, and the two are connected to each other by screws.

[0026] The sun gear 31 is disposed on a surface of the end cover 32 facing the housing 11 .

[0027] The first planetary gear set 33 includes three gears of the same specification, which are evenly arranged on the side of the end cover 32 facing the housing 11, and the axis of each gear is on the same circular path. The first planetary gear set 33 is meshed with the sun gear 31 and the end cover 32, and the first planetary gear set 33 revolves around the sun gear. When the transmission system is working, the sun gear 31 is the power input end, and the first planetary gear set 33 is the power output end.

[0028] The first planet carrier 34 is arranged on the side of the first planetary gear set 33 facing away from the end cover 32. The first planet carrier 34 is provided with three first planetary gear shafts 341 corresponding to the axis positions of the gears of the first planetary gear set 33 on the side facing the first planetary gear set 33; the first planetary gear set is mounted on the first planetary gear shafts 341 and can rotate around the first planetary gear shafts 341. The first planet carrier 34 is provided with a sun gear shaft 342 at the center position of the surface facing the second planet carrier 35, and the sun gear shaft 342 is meshed with the second planetary gear set 36. When the transmission system is working, the sun gear shaft 342 is the power input end, and the second planetary gear set 36 is the power output end.

[0029] In other embodiments, the number of the gears of the first planetary gear set 33 and the number of the first planetary gear shafts 341 corresponding to the first planet carrier 34 are greater than three.

[0030] The second planet carrier 35 is arranged on a surface of the first planet carrier 34 facing away from the first planetary gear set 33. A hole is opened in the center of the second planet carrier 35, so that the sun gear shaft 342 can pass through the second planet carrier 35. Three second planetary gear shafts 351 for mounting the second planetary gear set 36 are evenly arranged on the surface of the second planet carrier 35 facing away from the first planet carrier 34.

[0031] The second planetary gear set 36 includes three gears of the same specification, which are evenly arranged on the corresponding shafts of the second planet carrier 35. The axes of the gears of the second planetary gear set 36 are located on the same circular path and correspond to the positions of the second planetary gear shafts 351.

[0032] In other embodiments, the number of gears of the second planetary gear set 36 and the number of the second planetary gear shafts 351 corresponding to the second planet carrier 35 are greater than three.

[0033] In other embodiments, more stages of planetary gear sets and corresponding planet carriers may be provided in the gear set 3 to further adjust the rotation speed and torque of the gear set 3 .

[0034] The first inner gear ring 37 is arranged on the periphery of the second planetary gear set 36, and teeth are arranged on the outer side of the first inner gear ring 37. The first inner gear ring 37 is meshed with the end of the second planetary gear set 36 close to the motor 4 through the inner teeth. When the transmission system is working, the second planetary gear set 36 is the power input end, and the first inner gear ring 37 is the power output end.

[0035] The first inner gear ring 37 is meshed with the output wheel 2 through the outer teeth passing through the slot of the housing 11. When the transmission system is working, the first inner gear ring 37 is the power input end, and the output wheel 2 is the power output end. A probe connected to the I / O interface is provided on the first inner gear ring 37, and the laser tool can collect data such as the rotation speed of the transmission system through the probe.

[0036] The second inner gear ring 38 is arranged on the side of the first inner gear ring 37 facing away from the second planetary carrier 35, and meshes with the end of the second planetary gear set 36 close to the housing 11. When the transmission system is working, the second planetary gear set 36 is the power input end, and the second inner gear ring 38 is the power output end. The gear ratio setting between the second inner gear ring 38 and the second planetary gear set 36 is different from the gear ratio setting between the first inner gear ring 37 and the second planetary gear set 36, so that the transmission system can achieve a differential function by adjusting the meshing state of the second planetary gear set 36 with the first inner gear ring 37 and the second inner gear ring 38.

[0037] In other embodiments, more additional inner ring gears may be provided, and the gear ratio setting between the additional inner ring gears and the second planetary gear set 36 is different from that between the first inner ring gear 37 and the second inner ring gear 38, so as to further refine the differential adjustment function.

[0038] The motor 4 is the power output source of the transmission system, and outputs the power to the output wheel 2 through the gear set 3. The motor 4 has a drive shaft 41 on the side facing the housing 11. The drive shaft 41 passes through the hole of the end cover 32 and is connected to the sun gear 31 to fix the sun gear 31. Corresponding screw holes are provided on the guide rail 1 and the motor 4, and the two are connected to each other by screws.

[0039] The drive shaft 41, the sun gear 31, the center of the circle where the axes of the gears of the first planetary gear set 33 are located, the sun gear shaft 342, the center of the second planetary carrier 35, the center of the circle where the axes of the gears of the second planetary gear set 36 are located, the center of the first inner ring gear 37, and the center of the second inner ring gear 38 are located on the same axis.

[0040] When the motor is working, the driving shaft 41 rotates, thereby driving the sun gear 31 to rotate with the driving shaft 41 as the axis. The sun gear 31 drives the first planetary gear set 33 to rotate; the rotation of the first planetary gear set 33 includes the rotation of each gear with the first planetary gear shaft 341 as the axis and the revolution with the axis of the sun gear 31 as the axis. The first planetary gear set 33 drives the first planet carrier 34 to rotate through the first star gear shaft 341, and the first planet carrier 34 rotates with the extension line of the driving shaft 41 as the axis. The first planet carrier 34 drives the second planetary gear set 36 to rotate through the sun gear shaft 342, and the rotation of the second planetary gear set 36 includes the rotation of each gear with the second planetary gear shaft 351 as the axis and the revolution with the sun gear shaft 342 as the axis. The second planetary gear set 36 drives the second planet carrier 35 to rotate through the second planetary gear shaft 351, and drives the first inner gear ring 37 and the second inner gear ring 38 to rotate. The first inner gear ring 37 drives the output wheel 2 to rotate, thereby rotating the base of the laser tool.

[0041] According to the requirements, the rotation speed of the first-stage planetary structure is adjusted by adjusting the gear ratios and respective radii among the sun gear 31 , the annular protrusion of the end cover 32 and the first planetary gear set 33 .

[0042] When the motor 4 rotates clockwise, the drive shaft 41 rotates clockwise, the gears of the first planetary gear set 33 revolve clockwise and rotate counterclockwise, the first planet carrier rotates clockwise, and the gears of the second planetary gear set 36 rotate clockwise and rotate counterclockwise.

[0043] When the motor 4 rotates counterclockwise, the drive shaft 41 rotates counterclockwise, the gears of the first planetary gear set 33 rotate clockwise while revolving counterclockwise, the first planet carrier rotates counterclockwise, and the gears of the second planetary gear set 36 rotate clockwise while rotating counterclockwise.

[0044] The speed and direction of rotation of the second-stage planetary structure are adjusted by adjusting the gear ratios and respective radii among the sun gear shaft 342 , the second planetary gear set 36 and the first internal gear ring 37 .

[0045] When the first inner gear ring 37 rotates clockwise, the output wheel 2 rotates counterclockwise; when the first inner gear ring 37 rotates counterclockwise, the output wheel 2 rotates clockwise.

[0046] The angular velocity of the first inner gear ring 37 is less than the angular velocity of the drive shaft 41, thereby reducing the angular velocity of the output wheel 2 and ensuring the accuracy of the base rotation. The use of a planetary gear set can also reduce the axial clearance of the transmission system and the backlash between teeth, thereby further improving the accuracy of the transmission system. Secondly, the input torque required for the transmission system to rotate is increased through the two-stage planetary structure, the transmission capacity of the transmission system is improved, and the laser instrument is not easy to rotate when it falls, reducing the possibility of impact damage to the laser instrument due to falling, and allowing the user to adjust the position of the laser tool by manually turning the output wheel. In addition, due to the use of a two-stage planetary gear set, the installation of the transmission system does not need to consider the position coordination between different gears, but only needs to be installed in a top-down order.

[0047] The dovetail groove is used on the guide rail 1 and the dovetail tenon is used on the output wheel 2, so that the guide rail 1 and the output wheel 2 can be in multi-faceted contact and cooperation, reducing the instability of the output wheel moving at a large angle, and further reducing the sliding resistance caused by instability. Further in conjunction with the transmission structure with a multi-stage planetary structure, the torque of the transmission structure can be adjusted to improve the bearing capacity of the transmission system, and the transmission structure with a planetary structure can achieve a smaller axial gap and backlash, so that the transmission system can achieve higher inching accuracy. Therefore, the transmission system of the laser tool provided by the utility model can significantly improve the accuracy, stability and reliability of the laser tool during rotation.

[0048] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A transmission system for a laser tool, comprising a driving structure, a transmission structure, a guide rail and an output wheel; The driving structure is a power output source; The transmission structure connects the driving structure and the output wheel, the transmission structure rotates under the drive of the driving structure, and the transmission structure drives the output wheel to rotate; The guide rail is an annular cylinder, which is engaged with one end of the output wheel. The guide rail is provided with a groove, and the groove forms a closed path for limiting and guiding the output wheel. The output wheel is an annular cylinder, and one end of the output wheel spliced ​​with the guide rail has a circle of tenons, and the tenons are embedded in the grooves on the guide rail and adapted. The output wheel slides along the closed path of the guide rail under the drive of the transmission structure, and the other end of the output wheel is connected to a laser tool, and the output wheel is used to drive the laser tool to rotate; it is characterized in that The groove on the guide rail is dovetail-shaped; The tenon on the output wheel is dovetail-shaped, so that the shape of the tenon matches the shape of the groove on the guide rail.

2. A transmission system for a laser tool as claimed in claim 1, characterized in that: The transmission structure has at least two-stage planetary structures, including a sun gear, an end cover, a first planet carrier, a first planetary gear set, a second planet carrier, a second planetary gear set, a first inner gear ring, and a second inner gear ring; The first planetary gear set includes a plurality of gears of the same specifications; The second planetary gear set includes a plurality of gears of the same specifications; A first planetary gear shaft corresponding to the first planetary gear set is disposed on the side of the first planetary carrier facing the first planetary gear set, and a sun gear shaft is disposed at the center of the side of the first planetary carrier facing the second planetary carrier; The second planet carrier is provided with a second planetary gear shaft corresponding to the second planetary gear set; The first planetary gear set is installed on the first planet carrier through the first planetary gear shaft, and the first planetary gear set is meshed with the sun gear and the end cover to form a first-stage planetary structure; The sun gear drives the first planetary gear set to rotate, and the first planetary gear set drives the first planet carrier to rotate via the first planetary gear shaft; The second planetary gear set is installed on the second planet carrier through the second planetary gear shaft, and the second planetary gear set is meshed with the sun gear shaft, the first inner gear ring and the second inner gear ring on the first planet carrier to form a second-stage planetary structure; The first planet carrier drives the second planetary gear set to rotate through the sun gear shaft, and the second planetary gear set drives the first inner gear ring and the second inner gear ring to rotate; The outer side of the first inner gear ring is provided with teeth, and the first inner gear ring is meshed with the output wheel through the teeth on the outer side, and the first inner gear ring drives the output wheel to rotate.

3. A transmission system for a laser tool as claimed in claim 2, characterized in that: The gear ratio setting of the second internal gear ring is different from the gear ratio setting of the first internal gear ring.

4. A transmission system for a laser tool as claimed in claim 2, characterized in that: An additional inner gear ring is arranged in the transmission structure, and the gear ratio of the additional inner gear ring is different from that of the first inner gear ring and the second inner gear ring.

5. A transmission system for a laser tool according to any one of claims 1 to 4, characterized in that: Also included are probes; The probe is arranged on the output wheel and the transmission structure, and is connected to the laser tool, so as to collect status information of the output wheel and the transmission structure and send the status information to the laser tool.

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