A machine tool for processing large circular arc tooth line cylindrical gears

Abstract

The present invention is applicable to the technical field of gear processing, and provides a processing machine tool for large circular arc tooth line cylindrical gears, including a base, a processing unit is installed on the base, a clamping and rotating unit is installed on the side of the base away from the processing unit, and the top of the clamping and rotating unit clamps the circular arc tooth line cylindrical gear; the base includes two symmetrically arranged upper slide rails and two symmetrically arranged lower slide rails; the processing unit includes a slider slidably connected to the upper slide rails, a processing frame fixedly connected to the slider, a drainage groove symmetrically opened at the top of the processing frame, and two groups of arc sliding knife assemblies installed on the side wall of the processing frame. The device solves the problem that circular arc tooth line cylindrical gears are difficult to process with traditional circular gear processing knives, and achieves the effect of using modularly designed arc tracks to process circular arc tooth line cylindrical gears with larger diameters and higher heights.

Description

Technical Field

[0001] The invention relates to the technical field of gear processing, and more particularly to a machine tool for processing large-scale circular arc tooth line cylindrical gears. Background Art

[0002] Circular arc tooth line cylindrical gear is a specially designed gear with circular arc tooth line shape, which is different from the traditional involute gear. This design enables the gear to better disperse the load when meshing, reduce the contact stress of the tooth surface, thereby improving the load capacity and transmission efficiency. Circular arc tooth line cylindrical gear is suitable for high-speed, high-load and low-noise transmission systems, especially in precision machinery and heavy machinery. However, its manufacturing difficulty is relatively high, the cost is relatively high, and high-precision processing equipment and technology are required.

[0003] At present, the processing of circular arc tooth line cylindrical gears on the market usually relies on circular machining tools that match the curvature of the gear. This method performs well when processing circular arc tooth line cylindrical gears with smaller curvatures, and can achieve high-precision and consistent machining results. However, when it is necessary to process circular arc tooth line cylindrical gears with larger curvatures, traditional circular machining tools are unable to cope with it. In order to meet this challenge, manufacturers have to use circular machining tools with enlarged diameters. Although the enlarged diameter of this tool can meet the processing requirements of large-curvature gears, it also brings about significant waste of resources. The enlarged tool not only increases material costs, but also increases the complexity of manufacturing and maintenance.

[0004] Therefore, if another tool is used to process the circular arc tooth line cylindrical gear, this problem can be solved. The arc tool is used, and the arc track is matched with the sliding cutter head. The sliding cutter head slides along the arc track to process the gear groove on the circular arc tooth line cylindrical gear. Although this processing method can solve the problem of processing circular arc tooth line cylindrical gears with large arcs, in the actual processing process, the shape of the arc track is different from that of the straight track, the geometry of the arc track is complex, and the curvature radius and curvature vary greatly. These changes will lead to uneven stress distribution, especially in the part with a small curvature radius, which is prone to stress concentration, so the arc track is prone to damage.

[0005] Therefore, it is necessary to design a processing machine tool for large circular arc tooth line cylindrical gears to solve the above problems. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide a machine tool for processing large-scale circular arc tooth line cylindrical gears.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A machining machine for large circular arc tooth line cylindrical gears, comprising a base, a machining unit is mounted on the base, a clamping and rotating unit is mounted on the side of the base away from the machining unit, and the top of the clamping and rotating unit clamps the circular arc tooth line cylindrical gear;

[0009] The base includes two symmetrically arranged upper slide rails and two symmetrically arranged lower slide rails;

[0010] The processing unit includes a slider slidably connected to the upper slide rail, a processing frame fixedly connected to the slider, a drainage groove symmetrically opened on the top of the processing frame, and two groups of arc-shaped sliding knife assemblies installed on the side wall of the processing frame, and the two groups of arc-shaped sliding knife assemblies are symmetrical and arranged facing each other;

[0011] The clamping and rotating unit comprises a clamping and rotating body slidably connected to the top end of the lower sliding rail, a rotating assembly arranged at the top of the clamping and rotating body, and a clamping assembly arranged at the center position of the rotating assembly.

[0012] By adopting the above-mentioned technical scheme, the present invention realizes the processing of circular arc tooth line cylindrical gears through the cooperation of the base, the processing unit, and the rotating clamping unit. The unprocessed circular arc tooth line cylindrical gear is installed on three sets of clamping claws. The three sets of clamping claws extend into the center of the unprocessed circular arc tooth line cylindrical gear, and the position is fine-tuned to align it with the center position of the arc slide assembly on the processing unit. According to the arc direction to be processed, it is selected, and the height is adjusted by the telescopic module to ensure that the center of the circular arc tooth line cylindrical gear is aligned with the center of the selected arc slide assembly. Subsequently, the rotating body is clamped to slide close to or away from the arc slide assembly, so as to process circular arc tooth line cylindrical gears of different diameters, and the processing depth of the gear groove on the circular arc tooth line cylindrical gear can be controlled. At the same time, the slider can be used to slide and drive the movement of the processing frame to adjust the processing depth.

[0013] The present invention is further configured as follows: the base includes a bottom plate, a support frame is installed on the top of the bottom plate, two symmetrical groups of mounting grooves are opened on the top of the support frame, a group of upper slide rails are installed on each group of the mounting grooves, and two symmetrically arranged groups of lower slide rails are installed on the side of the bottom plate away from the support frame.

[0014] By adopting the above technical scheme, during the processing of circular arc tooth line cylindrical gears, when the slide body slides on the center slide rail or on the arc track formed by the center slide rail and the extended slide rail, since the slide body reciprocates on the center slide rail or on the arc track formed by the center slide rail and the extended slide rail, and since the center slide rail or the track formed by the center slide rail and the extended slide rail are both arc-shaped, it is difficult for the cutting fluid to flow straight down due to gravity. Therefore, the setting of the two sets of flow troughs can ensure that the cutting fluid flows down from the flow trough to the processing stage, avoiding processing defects caused by insufficient inflow of cutting fluid, thereby improving product quality.

[0015] The present invention is further configured as follows: the arc-shaped slide assembly includes a central slide rail, and a plurality of groups of extended slide rails are arranged at the upper and lower ends of the central slide rail. The central slide rail and the plurality of extended slide rails constitute an arc-shaped rail, and the cross-sections of the central slide rail and the extended slide rail are E-shaped. The plurality of groups of extended slide rails are symmetrically arranged according to the center point of the central slide rail and have the same curvature as the central slide rail.

[0016] The present invention is further configured as follows: a group of telescopic cylinders are installed on one end of the central slide rail and several groups of extended slide rails close to the processing frame, the other end of the telescopic cylinders is connected to the side wall of the processing frame, and the telescopic cylinders are arranged in the horizontal direction.

[0017] By adopting the above technical solution, the center slide rail and the extended slide rail, and the extended slide rail and the extended slide rail can be spliced ​​and provided with a gap, and the gap length is set to the millimeter level. Due to the complex geometric shape of the arc track, the radius of curvature and the curvature vary greatly. These changes will lead to uneven stress distribution, especially in the part with a smaller radius of curvature, which is prone to stress concentration, so it is easy to be damaged. By designing a modular design in which the center slide rail and the extended slide rail can be spliced, the center slide rail or the extended slide rail can be flexibly replaced and repaired, and timely repairs and changes can be made after a certain part of the track is damaged, thereby improving processing efficiency. It does not affect the sliding of the slider body on the arc track formed by the center slide rail and the extended slide rail. In addition, the gap is set because the slider body generates heat during the sliding process, which will cause thermal expansion and contraction. If the gap is not set, the slider body will generate heat after sliding, which will cause thermal expansion of the track, thereby causing friction and ejection between the tracks, resulting in track deformation, affecting the track curvature, and even causing track damage.

[0018] The present invention is further configured as follows: a slide knife body is slidably connected to the central slide rail, the slide knife body is adapted to the shape of the central slide rail, two groups of slide knives are installed on the top of the slide knife body, the two groups of slide knives are arranged at a distance from each other, and two groups of liquid flow grooves are arranged between the slide knife body and the central slide rail.

[0019] The present invention is further configured as follows: the rotating assembly includes a mounting plate arranged on the top of a clamping rotating body, a through hole is provided on the mounting plate, a rotating disk is rotatably connected in the through hole of the mounting plate, a plurality of groups of grooves are provided around the side wall of the rotating disk, a longitudinal rotating shaft is rotatably connected to the rotating disk, the longitudinal rotating shaft is adapted to the shape of the rotating disk, and a transverse rotating shaft is rotatably connected to one end of the longitudinal rotating shaft away from the rotating disk.

[0020] The present invention is further configured as follows: a driving module is installed at one end of the transverse rotating shaft away from the longitudinal rotating shaft, and the longitudinal rotating shaft and the transverse rotating shaft are vertically arranged.

[0021] The present invention is further configured as follows: the longitudinal rotating shaft includes a longitudinal rotating wheel rotatably connected to a rotating disk, the longitudinal rotating wheel is adapted to the shape of the rotating disk, a driving gear is provided at one end of the longitudinal rotating shaft away from the rotating disk, and the transverse rotating shaft includes a transverse rotating wheel rotatably connected to the driving gear, the transverse rotating wheel is adapted to the shape of the driving gear.

[0022] The present invention is further configured as follows: the clamping assembly includes a clamping drive, the clamping drive is arranged inside the telescopic module, the top of the clamping drive is connected to the telescopic module, the telescopic module is connected to three groups of clamping claws, and the three groups of clamping claws are arranged facing each other.

[0023] The present invention is further configured as follows: the circular arc tooth line cylindrical gear is configured as a circular ring, and the circular arc tooth line cylindrical gear is surrounded by gear teeth and gear grooves.

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

[0025] 1. The present invention realizes the processing of circular arc tooth line cylindrical gears through the cooperation of a base, a processing unit, and a rotating clamping unit. The unprocessed circular arc tooth line cylindrical gear is installed on three sets of clamping claws. The three sets of clamping claws extend into the center of the unprocessed circular arc tooth line cylindrical gear, and the position is fine-tuned to align it with the center position of the arc slide assembly on the processing unit. The arc direction to be processed is selected, and the height is adjusted by the telescopic module to ensure that the center of the circular arc tooth line cylindrical gear is aligned with the center of the selected arc slide assembly. Then, the rotating body is clamped to slide close to or away from the arc slide assembly, so as to process circular arc tooth line cylindrical gears with different diameters. The processing depth of the gear groove on the circular arc tooth line cylindrical gear can also be controlled. At the same time, the slider can be used to slide and drive the movement of the processing frame to adjust the processing depth.

[0026] 2. During the processing of circular arc tooth line cylindrical gears, when the slider body slides on the center slide rail or on the arc track formed by the center slide rail and the extended slide rail, the slider body reciprocates on the center slide rail or on the arc track formed by the center slide rail and the extended slide rail. Since the center slide rail or the track formed by the center slide rail and the extended slide rail are both arc-shaped, it is difficult for the cutting fluid to flow straight down due to gravity. Therefore, the setting of two sets of flow troughs can ensure that the cutting fluid flows down from the flow trough to the processing stage, avoiding processing defects caused by insufficient inflow of cutting fluid, thereby improving product quality.

[0027] 3. In the present invention, the center rail and the extended rail, and the extended rails can be spliced ​​and provided with a gap, and the length of the gap is set to the millimeter level. Due to the complex geometric shape of the arc track, the radius of curvature and the curvature vary greatly. These changes will lead to uneven stress distribution, especially in the part with a smaller radius of curvature, which is prone to stress concentration, so it is easy to be damaged. By designing a modular design in which the center rail and the extended rail can be spliced, the center rail or the extended rail can be flexibly replaced and repaired, and timely repairs and changes can be made after a certain part of the track is damaged, thereby improving processing efficiency. It does not affect the sliding of the slider body on the arc track formed by the center rail and the extended rail. In addition, the gap is set because the slider body generates heat during the sliding process, which will cause thermal expansion and contraction. If the gap is not set, the slider body will generate heat after sliding, which will cause thermal expansion of the track, thereby causing friction and ejection between the tracks, resulting in track deformation, affecting the track curvature, and even causing track damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic structural diagram of a machine tool for machining large circular arc tooth line cylindrical gears.

[0029] Figure 2 It is a schematic diagram of the structure of the processing unit in the present invention.

[0030] Figure 3 It is a structural schematic diagram of the central slide rail and the extended slide rail in the present invention.

[0031] Figure 4 It is a cross-sectional view of the central slide rail and the extended slide rail in the present invention.

[0032] Figure 5 It is a schematic structural diagram of the clamping and rotating unit in the present invention.

[0033] Figure 6 It is an exploded schematic diagram of the rotary clamping unit in the present invention.

[0034] Figure 7 It is a schematic diagram of the structure of the rotating assembly in the present invention.

[0035] Figure 8 It is an exploded schematic diagram of the rotating assembly in the present invention.

[0036] Fig. 9 It is a schematic diagram of the structure of the clamping assembly in the present invention.

[0037] Fig.10 It is a schematic diagram of the structure of the circular arc tooth line cylindrical gear in the present invention.

[0038] Description of reference numerals: 1, base; 11, bottom plate; 12, support frame; 13, mounting groove; 14, upper slide rail; 15, lower slide rail;

[0039] 2. Processing unit; 21. Sliding block; 22. Processing frame; 23. Drainage trough; 24. Arc-shaped slide assembly; 241. Center slide rail; 242. Extended slide rail; 243. Slide body; 244. Slide; 245. Liquid flow trough; 246. Telescopic cylinder;

[0040] 3. Clamping and rotating unit; 31. Clamping and rotating body; 32. Rotating assembly; 321. Mounting plate; 322. Rotating disk; 323. Driving module; 324. Longitudinal rotating shaft; 3241. Driving gear; 3242. Longitudinal rotating wheel; 325. Transverse rotating shaft; 3251. Transverse rotating wheel; 33. Clamping assembly; 331. Clamping drive; 332. Telescopic module; 333. Clamping claw;

[0041] 4. Circular arc tooth line cylindrical gear; 41. Gear teeth; 42. Gear groove. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0044] See also Figure 1-10 , the present invention provides the following technical solutions:

[0045] For example, see Figure 1-10 , a machine tool for machining large circular arc tooth line cylindrical gears, see Figure 1 , including a base 1, on which a processing unit 2 is installed, and the processing unit 2 is used to realize the processing of the circular arc tooth line cylindrical gear 4. A clamping and rotating unit 3 is installed on the side of the base 1 away from the processing unit 2, and the clamping and rotating unit 3 is used to clamp the circular arc tooth line cylindrical gear 4, and can drive the circular arc tooth line cylindrical gear 4 to rotate after clamping it. The base 1 provides an installation environment for the processing unit 2 and the clamping and rotating unit 3, ensuring that the processing unit 2 and the clamping and rotating unit 3 operate stably during actual operation without jitter.

[0046] See also Fig.10 The circular arc tooth line cylindrical gear 4 is set in a circular ring shape, and the circular arc tooth line cylindrical gear 4 is surrounded by gear teeth 41 and gear grooves 42, wherein the gear teeth 41 are arc-shaped protrusions, and the gear grooves 42 are arc-shaped grooves.

[0047] In this embodiment, specifically: the base 1 includes a bottom plate 11, which is arranged in the horizontal direction, and the bottom plate 11 provides an installation environment for the entire device. A support frame 12 is installed on the top of the bottom plate 11, and the support frame 12 provides an installation environment for the processing unit 2. Two symmetrical groups of installation grooves 13 are opened on the top of the support frame 12. The two groups of installation grooves 13 are adapted to the shape of the upper slide rails 14, and each group of installation grooves 13 is installed with a group of upper slide rails 14. Two symmetrically arranged groups of lower slide rails 15 are installed on the side of the bottom plate 11 away from the support frame 12.

[0048] See also Figure 2 The processing unit 2 includes a slider 21 slidably connected to the upper slide rail 14, and a processing frame 22 is fixedly connected to the slider 21. The slider 21 can slide on the upper slide rail 14, and the sliding of the slider 21 can drive the processing frame 22 to slide. The top of the processing frame 22 is symmetrically provided with drainage grooves 23, and two groups of arc-shaped sliding knife assemblies 24 are installed on the side walls of the processing frame 22. The two groups of arc-shaped sliding knife assemblies 24 are symmetrically and oppositely arranged. The drainage groove 23 can provide the cutting fluid required in the processing process to flow down, thereby avoiding the splashing of the cutting fluid caused by the movement of the two groups of arc-shaped sliding knife assemblies 24 during the processing.

[0049] See also Figure 5 The clamping and rotating unit 3 includes a clamping and rotating body 31 slidably connected to the top of the lower slide rail 15, a rotating assembly 32 arranged at the top of the clamping and rotating body 31, and a clamping assembly 33 arranged at the center position of the rotating assembly 32. The clamping and rotating body 31 can be moved horizontally through the lower slide rail 15. Through the movement of the clamping and rotating body 31, the arc tooth line cylindrical gear 4 to be processed can be moved close to or away from the processing unit 2, and the processing depth of the gear groove 42 of the arc tooth line cylindrical gear 4 can be controlled. The clamping assembly 33 can clamp the arc tooth line cylindrical gear 4 to ensure that the arc tooth line cylindrical gear 4 does not shake or sway during the processing process.

[0050] See also Figure 5 , Figure 6The rotating assembly 32 includes a mounting plate 321 disposed on the top of the clamping rotating body 31. A through hole is provided on the mounting plate 321. A rotating disk 322 is rotatably connected in the through hole of the mounting plate 321. The rotating disk 322 can rotate relative to the mounting plate 321. Several groups of grooves are provided around the side wall of the rotating disk 322. A longitudinal rotating shaft 324 is rotatably connected to the rotating disk 322. The longitudinal rotating shaft 324 is adapted in shape to the rotating disk 322. The rotation of the longitudinal rotating shaft 324 can drive the rotation of the rotating disk 322. A transverse rotating shaft 325 is rotatably connected to the end of the longitudinal rotating shaft 324 away from the rotating disk 322. The rotation of the transverse rotating shaft 325 can drive the longitudinal rotating shaft 324 to rotate. A driving module 323 is installed on the end of the transverse rotating shaft 325 away from the longitudinal rotating shaft 324. The output end of the driving module 323 is connected to the transverse rotating shaft 325. The driving module 323 can drive the transverse rotating shaft 325 to rotate. The longitudinal rotation axis 324 and the transverse rotation axis 325 are vertically arranged.

[0051] See also Figure 6 The longitudinal rotating shaft 324 includes a longitudinal rotating wheel 3242 rotatably connected to the rotating disk 322, the longitudinal rotating wheel 3242 is adapted in shape to the rotating disk 322, and the longitudinal rotating wheel 3242 drives the rotating disk 322 to rotate by rotating. A driving gear 3241 is provided at one end of the longitudinal rotating shaft 324 away from the rotating disk 322, and the transverse rotating shaft 325 includes a transverse rotating wheel 3251 rotatably connected to the driving gear 3241, and the transverse rotating wheel 3251 drives the longitudinal rotating shaft 324 to rotate by rotating, and the transverse rotating wheel 3251 is adapted in shape to the driving gear 3241.

[0052] Specifically, the driving module 323 operates to drive the lateral rotating shaft 325 to rotate. When the lateral rotating wheel 3251 on the lateral rotating shaft 325 rotates, the driving gear 3241 can be driven to rotate through the principle of gear transmission, thereby driving the longitudinal rotating shaft 324 to rotate. The longitudinal rotating wheel 3242 on the longitudinal rotating shaft 324 rotates, and the rotating disk 322 is driven to rotate through the principle of gear transmission. Through the above operation process, the arc tooth line cylindrical gear 4 clamped above can be rotated to process the next gear groove 42 after processing one gear groove 42, without manually rotating the arc tooth line cylindrical gear 4.

[0053] In this embodiment, specifically: the clamping assembly 33 includes a clamping drive 331, which can control the expansion and contraction of three groups of clamping claws 333, and can fine-tune the clamping center of the three groups of clamping claws 333, so as to ensure that the circular arc tooth line cylindrical gear 4 can be processed by the processing unit 2. The clamping drive 331 is arranged inside the telescopic module 332, and the top of the clamping drive 331 is connected to the telescopic module 332, and the telescopic module 332 can drive the clamping assembly 33 to expand and contract, and the telescopic module 332 is connected to three groups of clamping claws 333, and the three groups of clamping claws 333 are arranged opposite to each other, and the three groups of clamping claws 333 ensure the stable clamping of the circular arc tooth line cylindrical gear 4, so as to ensure that it does not shake or tremble during the rotation process. Through the expansion and contraction of the clamping assembly 33, the circular arc tooth line cylindrical gear 4 can be ensured to be in the track center position of the processing unit 2, and the track modular extension and shortening design is adjusted to ensure that there is no problem of skewed processing arc due to deviation from the track center.

[0054] Specifically, the unprocessed arc tooth line cylindrical gear 4 is installed on three sets of clamping claws 333, and the three sets of clamping claws 333 extend into the center of the unprocessed arc tooth line cylindrical gear 4, and fine-tune the position to align it with the center position of the arc slide assembly 24 on the processing unit 2. According to the arc direction to be processed, it is selected, and the height is adjusted by the telescopic module 332 to ensure that the center of the arc tooth line cylindrical gear 4 is aligned with the center of the selected arc slide assembly 24. Then, the clamping rotating body 31 is slid close to or away from the arc slide assembly 24, so as to process arc tooth line cylindrical gears 4 with different diameters, and the processing depth of the gear groove 42 on the arc tooth line cylindrical gear 4 can also be controlled. At the same time, the slider 21 can also slide to drive the movement of the processing frame 22 to adjust the processing depth.

[0055] For example 2, please refer to Figure 2 , Figure 3 , Figure 4 The second embodiment is improved as follows on the basis of the first embodiment. Although the first embodiment can realize the processing of the circular arc tooth line cylindrical gear 4, in the actual processing process, due to the complex geometric shape of the arc track, the curvature radius and the curvature change greatly. These changes will lead to uneven stress distribution, especially in the part with a small curvature radius, which is easy to cause stress concentration, thus easily causing damage to the arc track. Therefore, it is necessary to further improve the design of the arc track.

[0056] See also Figure 2The arc-shaped slide assembly 24 includes a central slide rail 241, the center of the central slide rail 241 corresponds to the center position of the arc tooth line cylindrical gear 4, and a plurality of groups of extended slide rails 242 are arranged at the upper and lower ends of the central slide rail 241. The central slide rail 241 and the plurality of groups of extended slide rails 242 constitute an arc-shaped track. The cross-sections of the central slide rail 241 and the extended slide rail 242 are E-shaped. The plurality of groups of extended slide rails 242 are symmetrically arranged according to the center point of the central slide rail 241 and have the same arc as the central slide rail 241.

[0057] See also Figure 3 , Figure 4 The center slide rail 241 and several groups of extended slide rails 242 are connected to one end close to the processing frame 22 with a group of telescopic cylinders 246. The connection mode of the center slide rail 241, several groups of extended slide rails 242 and the telescopic cylinder 246 is set to be plug-in. The other end of the telescopic cylinder 246 is connected to the side wall of the processing frame 22. The telescopic cylinder 246 is set in the horizontal direction. The telescopic cylinder 246 can be telescoped in the horizontal direction. Through the cooperation of multiple groups of telescopic cylinders 246, the center slide rail 241 and the extended slide rails 242 can be spliced ​​and combined to form arc tracks of different lengths, thereby adapting to arc tooth line cylindrical gears 4 of different heights.

[0058] Specifically, the center slide rail 241 and several groups of extended slide rails 242 are installed on the telescopic cylinder 246 by plugging. In the actual processing process, if the arc curvature of the circular arc tooth line cylindrical gear 4 needs to be changed, the center slide rail 241 and several groups of extended slide rails 242 can be removed from the telescopic cylinder 246 and replaced with the center slide rail 241 and several groups of extended slide rails 242 with different curvatures, thereby realizing the processing of the circular arc tooth line cylindrical gear 4 with different curvatures.

[0059] In this embodiment, specifically, due to the complex geometric shape of the arc track, the radius of curvature and the curvature vary greatly. These changes will lead to uneven stress distribution, especially in the part with a smaller radius of curvature, which is prone to stress concentration and is therefore prone to damage. By designing a modular design in which the center rail 241 and the extension rail 242 can be spliced, the center rail 241 or the extension rail 242 can be flexibly replaced and repaired, and timely repair and modification can be performed after a certain part of the track is damaged, thereby improving processing efficiency.

[0060] In the present embodiment, specifically, a gap is provided between the central slide rail 241 and the extended slide rail 242, and a gap is also provided between each group of extended slide rails 242, and the gap length is set to the millimeter level, which does not affect the sliding of the slide body 243 on the arc track formed by the central slide rail 241 and the extended slide rail 242. Moreover, this gap is provided because the slide body 243 generates heat during the sliding process, which will cause thermal expansion and contraction. If the gap is not provided, the heat generated by the sliding of the slide body 243 will cause thermal expansion of the track, thereby causing friction and ejection between the track, resulting in track deformation, affecting the curvature of the track, and even causing damage to the track.

[0061] In this embodiment, specifically, a slide blade body 243 is slidably connected to the central slide rail 241, and the slide blade body 243 can slide on the central slide rail 241, and when the extended slide rail 242 is extended and parallel to the central slide rail 241, it can slide on the arc track formed by the central slide rail 241 and the extended slide rail 242. The slide blade body 243 is adapted in shape to the central slide rail 241 and the extended slide rail 242, and two groups of slide blades 244 are installed on the top of the slide blade body 243, and the two groups of slide blades 244 are arranged at a distance from one end, and the two groups of slide blades 244 can be processed on the circular arc tooth line cylindrical gear 4, and the gear groove 42 is processed on the circular arc tooth line cylindrical gear 4, and two groups of liquid flow grooves 245 are arranged between the slide blade body 243 and the central slide rail 241.

[0062] Specifically, during the processing of the circular arc tooth line cylindrical gear 4, when the slide body 243 slides on the center slide rail 241 or on the arc track formed by the center slide rail 241 and the extended slide rail 242, since the slide body 243 reciprocates on the center slide rail 241 or on the arc track formed by the center slide rail 241 and the extended slide rail 242, and since the center slide rail 241 or the track formed by the center slide rail 241 and the extended slide rail 242 are both arc-shaped, it is difficult for the cutting fluid to flow straight down due to gravity. Therefore, the setting of the two sets of flow troughs 245 can ensure that the cutting fluid flows down from the flow trough 245 to the processing stage, avoiding processing defects due to insufficient inflow of cutting fluid, thereby improving product quality.

[0063] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A machine tool for processing large circular arc tooth line cylindrical gears, characterized in that: It comprises a base (1), a processing unit (2) is mounted on the base (1), a clamping and rotating unit (3) is mounted on a side of the base (1) away from the processing unit (2), and a cylindrical gear (4) with a circular arc tooth line is clamped on the top of the clamping and rotating unit (3); The base (1) comprises two symmetrically arranged upper slide rails (14) and two symmetrically arranged lower slide rails (15); The processing unit (2) comprises a slider (21) slidably connected to the upper slide rail (14), a processing frame (22) fixedly connected to the slider (21), a drainage groove (23) symmetrically arranged at the top of the processing frame (22), and two groups of arc-shaped sliding knife assemblies (24) installed on the side wall of the processing frame (22), wherein the two groups of arc-shaped sliding knife assemblies (24) are symmetrically arranged and face each other; The clamping rotating unit (3) comprises a clamping rotating body (31) slidably connected to the top of the lower sliding rail (15), a rotating assembly (32) arranged at the top of the clamping rotating body (31), and a clamping assembly (33) arranged at the center of the rotating assembly (32); The arc-shaped slide assembly (24) comprises a central slide rail (241), and a plurality of groups of extended slide rails (242) are arranged at the upper and lower ends of the central slide rail (241). The central slide rail (241) and the plurality of groups of extended slide rails (242) form an arc-shaped track. The cross-sections of the central slide rail (241) and the extended slide rail (242) are E-shaped. The plurality of groups of extended slide rails (242) are symmetrically arranged according to the center point of the central slide rail (241) and have the same arc as the central slide rail (241). A group of telescopic cylinders (246) are installed at one end of the central slide rail (241) and the plurality of groups of extended slide rails (242) close to the processing frame (22); the other end of the telescopic cylinders (246) is connected to the side wall of the processing frame (22); the telescopic cylinders (246) are arranged in the horizontal direction and can be telescoped in the horizontal direction; A slide blade body (243) is slidably connected to the central slide rail (241). The slide blade body (243) and the central slide rail (241) are adapted in shape. Two groups of slide blades (244) are installed on the top of the slide blade body (243). The two groups of slide blades (244) are arranged at a distance from each other. Two groups of liquid flow grooves (245) are arranged between the slide blade body (243) and the central slide rail (241).

2. A machine tool for processing large circular arc tooth line cylindrical gears according to claim 1, characterized in that: The base (1) comprises a bottom plate (11), a support frame (12) is mounted on the top of the bottom plate (11), two symmetrical groups of mounting grooves (13) are formed on the top of the support frame (12), a group of upper slide rails (14) are mounted on each group of the mounting grooves (13), and two symmetrical groups of lower slide rails (15) are mounted on a side of the bottom plate (11) away from the support frame (12).

3. A machine tool for processing large circular arc tooth line cylindrical gears according to claim 1, characterized in that: The rotating assembly (32) comprises a mounting plate (321) arranged on the top of the clamping rotating body (31); a through hole is formed on the mounting plate (321); a rotating disk (322) is rotatably connected in the through hole of the mounting plate (321); a plurality of groups of grooves are formed around the side wall of the rotating disk (322); a longitudinal rotating shaft (324) is rotatably connected to the rotating disk (322); the longitudinal rotating shaft (324) is adapted in shape to the rotating disk (322); and a transverse rotating shaft (325) is rotatably connected to one end of the longitudinal rotating shaft (324) away from the rotating disk (322).

4. A machine tool for machining large circular arc tooth line cylindrical gears according to claim 3, characterized in that: A driving module (323) is installed at one end of the transverse rotation axis (325) away from the longitudinal rotation axis (324), and the longitudinal rotation axis (324) and the transverse rotation axis (325) are arranged vertically.

5. A machine tool for processing large circular arc tooth line cylindrical gears according to claim 4, characterized in that: The longitudinal rotating shaft (324) comprises a longitudinal rotating wheel (3242) rotatably connected to the rotating disk (322), the longitudinal rotating wheel (3242) being adapted in shape to the rotating disk (322), a driving gear (3241) being provided at one end of the longitudinal rotating shaft (324) away from the rotating disk (322), and the transverse rotating shaft (325) comprises a transverse rotating wheel (3251) rotatably connected to the driving gear (3241), the transverse rotating wheel (3251) being adapted in shape to the driving gear (3241).

6. The machine tool for processing large circular arc tooth line cylindrical gears according to claim 1, characterized in that: The clamping assembly (33) comprises a clamping drive (331), wherein the clamping drive (331) is arranged inside the telescopic module (332), the top end of the clamping drive (331) is connected to the telescopic module (332), and the telescopic module (332) is connected to three groups of clamping claws (333), and the three groups of clamping claws (333) are arranged facing each other.

7. The machine tool for processing large circular arc tooth line cylindrical gears according to claim 1, characterized in that: The circular arc tooth line cylindrical gear (4) is arranged in a circular ring shape, and gear teeth (41) and gear grooves (42) are arranged around the circular arc tooth line cylindrical gear (4), and the gear teeth (41) and gear grooves (42) are both arranged in a circular arc shape.

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