Hobbing dry cutting device

Abstract

The utility model discloses a gear hobbing dry cutting device, which belongs to the technical field of gear hobbing dry cutting and comprises a frame, a gear fixing component connected onto the frame, a hob component connected onto the frame, an atomizing gun component connected onto the hob component, the atomizing gun component comprises a gun body, a mist outlet component, a transmission component and an adjusting component. The head of the gun body is connected with a mist outlet assembly, the middle of the gun body is connected with a conveying assembly, the tail of the gun body is connected with an adjusting assembly, the mist outlet assembly is connected with the conveying assembly, and the conveying assembly is connected with the adjusting assembly. The gear is cut through the hob assembly, cutting oil and air are respectively introduced into the transmission assembly, oil mist generated in the transmission assembly is uniformly sprayed onto the gear from the mist outlet assembly, so that the gear is uniformly cooled and lubricated at the same time, the amount and speed of the oil mist can be controlled through the adjusting assembly, and the gear can be uniformly cooled and lubricated. Therefore, different working conditions are adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of gear hobbing dry cutting, in particular to a gear hobbing dry cutting device. Background Art

[0002] The dry gear hobbing process is a green advanced manufacturing technology with the advantages of low workshop environmental pollution and high production efficiency. However, due to the use of high-speed cutting and cooling and lubrication without cutting oil or with a small amount of cutting oil, a large amount of cutting heat is generated during the dry gear hobbing process. The cutting heat that cannot be discharged in time gradually accumulates and is prone to cause temperature rise, eventually causing thermal deformation of the dry hob, thereby reducing the processing accuracy of the workpiece.

[0003] For example, Chinese patent CN112692383B proposes an enhanced heat exchange system for dry-cut gear hobbing. Taking into account that during the dry-cut gear hobbing process, multiple working teeth on the dry-cut hob generate heat due to intense friction with the workpiece being processed, the fan-shaped annular jet device mounted on the dry-cut hob in this application can continuously spray low-temperature compressed air to the front cutting surface of each working tooth of the dry-cut hob through multiple jet holes on its inner surface when the dry-cut hob is working, so that they can continuously exchange heat with the low-temperature compressed air, thereby reducing the thermal deformation of the dry-cut hob and improving the processing accuracy of the workpiece.

[0004] However, the efficiency of cooling the workpiece by compressed air in the above patent is relatively low, and a small amount of cutting oil is still required for cooling and lubrication in actual production. Moreover, the simultaneous operation of oil cooling and air cooling not only increases production costs but also causes environmental pollution.

[0005] Based on this, the utility model designs a gear hobbing dry cutting device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a gear hobbing dry cutting device.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A gear hobbing dry cutting device includes a frame;

[0009] The frame is connected to a gear fixing assembly for fixing the gear and driving the gear to rotate so as to facilitate cutting the gear;

[0010] The frame is connected to a hob assembly for cutting gears;

[0011] The hob assembly is connected to an atomizing gun assembly for atomizing cutting oil to lubricate and cool the gears;

[0012] The atomizing gun assembly includes a gun body, a mist outlet assembly, a transmission assembly and an adjustment assembly. The gun body is arranged on the hob assembly. The head of the gun body is connected to the mist outlet assembly, the middle part of the gun body is connected to the transmission assembly, and the tail of the gun body is connected to the adjustment assembly. The head of the gun body and the middle part of the gun body are threadedly connected, the middle part of the gun body and the tail of the gun body are threadedly connected, the mist outlet assembly is connected to the transmission assembly, and the transmission assembly is connected to the adjustment assembly.

[0013] Furthermore, the mist outlet assembly includes a mist outlet, a first pipe and a second pipe. The second pipe and multiple first pipes are opened in the head of the gun body. The multiple first pipes are all connected to the second pipe. A mist outlet is opened on the side wall of the head of the gun body, and the mist outlet is connected to the first pipe.

[0014] Furthermore, the transmission component includes an oil inlet pipe, a third pipe and an air inlet pipe. The third pipe is opened in the middle of the gun body, and the oil inlet pipe and the air inlet pipe are fixedly connected to the middle side wall of the gun body. The oil outlet of the oil inlet pipe is connected to the head end of the third pipe, and the air outlet of the air inlet pipe is connected to the tail end of the third pipe.

[0015] Furthermore, the second pipeline is connected to the third pipeline.

[0016] Furthermore, the adjustment component includes an electromagnet and a spring. Two electromagnets are connected to the tail of the gun body, one of which is fixedly connected to the inside of the gun body, and the other electromagnet is limitedly slidably connected to the connection between the air intake pipe and the third pipe, and a spring is installed between the two electromagnets.

[0017] Furthermore, the hob assembly includes a mounting frame, a connecting block, a second motor and a hob. The mounting frame is fixedly connected to the frame, the top side of the mounting frame is fixedly connected to the connecting block, the second motor is fixedly mounted on the top of the connecting block, the output end of the second motor rotates through the connecting block and extends to its bottom and is fixedly connected to the hob, and the hob is rotatably connected to the connecting block.

[0018] Furthermore, the gear fixing assembly includes a first motor, a first mounting seat, a fixed disk, a second mounting seat and a clamping assembly. The first mounting seat and the second mounting seat arranged in parallel are fixedly connected to the frame, the end of the first mounting seat away from the second mounting seat is fixedly connected to the first motor, and the end of the first mounting seat close to the second mounting seat is rotatably connected to the fixed disk. The output end of the first motor rotates through the first mounting seat and is fixedly connected to the fixed disk. The end of the fixed disk away from the first mounting seat is connected to the clamping assembly. The fixed disk and the clamping assembly are located above the horizontal plate of the second mounting seat, and the clamping assembly is connected to a gear.

[0019] Furthermore, the clamping assembly includes a first rotating rod, a second rotating rod, a third rotating rod, a connecting plate and a clamping block. A plurality of first rotating rods are rotatably connected to the end surface of the fixed plate away from the first mounting seat at equal intervals. Each first rotating rod is rotatably connected to the second rotating rod, each second rotating rod is rotatably connected to the third rotating rod, and multiple third rotating rods are rotatably connected to the connecting plate, which is fixedly connected to multiple clamping blocks for clamping gears.

[0020] The utility model has the following technical effects:

[0021] 1. In the utility model, compressed air is introduced into the third pipe from the air inlet pipe, and is discharged from the mist outlet through the third pipe, the second pipe, and the first pipe. Cutting oil enters the second pipe from the oil inlet pipe, and is torn into small droplets when encountering the compressed air. The small droplets are discharged from the mist outlet along with the compressed air through the second pipe and the first pipe. The small droplets are evenly sprayed on the gears, thereby achieving uniform cooling and lubrication of the gears at the same time; by energizing the electromagnets, the two electromagnets approach each other, thereby controlling the amount of compressed air in the air inlet pipe entering the third pipe, and then adjusting the speed and size of the droplets to adapt to different working conditions.

[0022] 2. The utility model moves the connecting plate toward or away from the first motor according to the length of the gear, and the connecting plate drives the first rotating rod to rotate toward or away from the first motor through the third rotating rod and the second rotating rod. When the length is adjusted to a suitable position, the pin is inserted into the rotating shafts of the first rotating rod, the second rotating rod and the third rotating rod, thereby preventing the first rotating rod, the second rotating rod and the third rotating rod from rotating during the cutting process. At this time, the gear is clamped between the clamping blocks to fix the gear. After that, the first motor is started, and the output end of the first motor drives the gear to rotate through the fixed plate, the first rotating rod, the second rotating rod, the third rotating rod, the connecting plate and the clamping block. The output end of the second motor drives the hob to rotate, thereby realizing cutting of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0024] Figure 1 A three-dimensional gear hobbing dry cutting device of the utility model Figure 1 ;

[0025] Figure 2 This is a front view of a gear hobbing dry cutting device of the present invention;

[0026] Figure 3 A three-dimensional gear hobbing dry cutting device of the utility model Figure 2 ;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0029] Figure 6 A half-section view of an atomizing gun assembly;

[0030] Figure 7 Schematic diagram of the structure of the first rotating rod, the second rotating rod and the third rotating rod in the retracted state;

[0031] Figure 8 Schematic diagram of the structure of the first rotating rod, the second rotating rod and the third rotating rod in the extended state;

[0032] Figure 9 Schematic diagram of the structure of the latch.

[0033] The numbers in the figure represent:

[0034] 1. Frame; 2. Gear fixing assembly; 21. First motor; 22. First mounting seat; 23. Fixing plate; 24. Second mounting seat; 25. Clamping assembly; 251. First rotating rod; 252. Second rotating rod; 253. Third rotating rod; 254. Connecting plate; 255. Block; 3. Hob assembly; 31. Mounting frame; 32. Connecting block; 33. Second motor; 34. Hob; 4. Atomizing gun assembly; 41. Mist outlet; 42. Oil inlet pipe; 43. Gun body; 44. First pipeline; 45. Second pipeline; 46. Air inlet pipe; 47. Third pipeline; 48. Electromagnet; 49. Spring; 5. Latch. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0036] The present invention will be further described below with reference to the embodiments.

[0037] The terms “left,” “right,” “front,” “back,” “up,” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0038] Example 1

[0039] Please refer to the instruction manual Figure 1-9 A gear hobbing dry cutting device includes a frame 1, a gear fixing assembly 2 for fixing the gear and driving the gear to rotate so as to cut the gear, a hob assembly 3 for cutting the gear is connected to the frame 1, and an atomizing gun assembly 4 is connected to the hob assembly 3 for atomizing cutting oil to lubricate and cool the gear.

[0040] The atomizing gun assembly 4 includes a gun body 43, a mist outlet assembly, a transmission assembly and an adjustment assembly. The gun body 43 is arranged on the hob assembly 3. The head of the gun body 43 is connected to the mist outlet assembly, the middle part of the gun body 43 is connected to the transmission assembly, and the tail of the gun body 43 is connected to the adjustment assembly. The head of the gun body 43 and the middle part of the gun body 43 are threadedly connected, the middle part of the gun body 43 and the tail of the gun body 43 are threadedly connected, the mist outlet assembly and the transmission assembly are connected, and the transmission assembly and the adjustment assembly are connected.

[0041] During use, the gear is fixed on the gear fixing assembly 2, and the gear is cut through the hob assembly 3. The cutting oil and air are respectively introduced into the transmission assembly. The oil mist generated in the transmission assembly is evenly sprayed from the mist outlet assembly onto the gear, thereby achieving uniform cooling and lubrication of the gear at the same time. The adjustment assembly can control the amount and speed of the oil mist to adapt to different working conditions, thereby avoiding the cutting heat generated during the dry cutting hobbing process from not being discharged in time, gradually accumulating and causing temperature rise, and ultimately causing thermal deformation of the dry cutting hob, thereby reducing the processing accuracy of the workpiece. At the same time, it also avoids the waste of resources and environmental pollution caused by the simultaneous use of oil cooling and air cooling, reducing production costs and reducing environmental pollution. In addition, since the head of the gun body 43 is threadedly connected to the middle part of the gun body 43, and the middle part of the gun body 43 is threadedly connected to the tail of the gun body 43, it is convenient to disassemble, repair and install the head, middle and tail of the gun body 43.

[0042] The mist outlet assembly includes a mist outlet 41, a first pipe 44 and a second pipe 45. The second pipe 45 and multiple first pipes 44 are opened in the head of the gun body 43. The multiple first pipes 44 are all connected to the second pipe 45. A mist outlet 41 is opened on the side wall of the head of the gun body 43, and the mist outlet 41 is connected to the first pipe 44.

[0043] The transmission component includes an oil inlet pipe 42, a third pipe 47 and an air inlet pipe 46. The third pipe 47 is opened in the middle of the gun body 43, and the oil inlet pipe 42 and the air inlet pipe 46 are fixedly connected to the middle side wall of the gun body 43. The oil outlet of the oil inlet pipe 42 is connected to the head end of the third pipe 47, and the air outlet of the air inlet pipe 46 is connected to the tail end of the third pipe 47. The second pipe 45 and the third pipe 47 are connected.

[0044] The adjustment component includes an electromagnet 48 and a spring 49. Two electromagnets 48 are connected to the tail of the gun body 43. One electromagnet 48 is fixedly connected to the inside of the gun body 43, and the other electromagnet 48 is limitedly slidably connected to the connection between the air intake pipe 46 and the third pipe 47. A spring 49 is installed between the two electromagnets 48.

[0045] During use, compressed air enters the third pipe 47 from the air inlet pipe 46, passes through the third pipe 47, the second pipe 45, and the first pipe 44, and is discharged from the mist outlet 41. Cutting oil enters the second pipe 45 from the oil inlet pipe 42, and is torn into small droplets when encountering the compressed air. The small droplets are discharged from the mist outlet 41 through the second pipe 45 and the first pipe 44 along with the compressed air. The small droplets are evenly sprayed on the gears, thereby achieving uniform cooling and lubrication of the gears at the same time. By energizing the electromagnets 48, the two electromagnets 48 are moved closer to each other, thereby controlling the amount of compressed air from the air inlet pipe 46 entering the third pipe 47, and then adjusting the speed and size of the droplets to adapt to different working conditions, avoiding the cutting heat generated during the dry cutting hobbing process. Due to the lack of time to be discharged, the cutting heat gradually accumulates and causes the temperature to rise, eventually causing thermal deformation of the dry cutting hob, thereby reducing the processing accuracy of the workpiece.

[0046] The hob assembly 3 includes a mounting frame 31, a connecting block 32, a second motor 33, and a hob 34. The mounting frame 31 is fixedly connected to the frame 1, and the connecting block 32 is fixedly connected to the top side of the mounting frame 31. The second motor 33 is fixedly mounted on the top of the connecting block 32. The output end of the second motor 33 rotates through the connecting block 32 and extends to the bottom of the connecting block 32, where it is fixedly connected to the hob 34. The hob 34 is rotatably connected to the connecting block 32. By fixing the gear to the gear fixing assembly 2 and starting the second motor 33, the output end of the second motor 33 drives the hob 34 to rotate, thereby achieving gear cutting.

[0047] The gear fixing assembly 2 includes a first motor 21, a first mounting seat 22, a fixed disk 23, a second mounting seat 24 and a clamping assembly 25. The first mounting seat 22 and the second mounting seat 24 are fixedly connected to the frame 1, and the end of the first mounting seat 22 away from the second mounting seat 24 is fixedly connected to the first motor 21, and the end of the first mounting seat 22 close to the second mounting seat 24 is rotatably connected to the fixed disk 23. The output end of the first motor 21 rotates through the first mounting seat 22 and is fixedly connected to the fixed disk 23. The end of the fixed disk 23 away from the first mounting seat 22 is connected to the clamping assembly 25. The fixed disk 23 and the clamping assembly 25 are located above the horizontal plate of the second mounting seat 24, and a gear is connected to the clamping assembly 25.

[0048] By clamping the gear on the clamping assembly 25, and the gear away from the clamping assembly 25 and resting on the vertical plate of the second mounting seat 24, the gear is clamped and fixed by the clamping assembly 25 and the second mounting seat 24, and the first motor 21 is started. The output end of the first motor 21 drives the gear through the fixed plate 23 and the clamping assembly 25, and the output end of the second motor 33 drives the hob 34 to rotate, thereby realizing cutting of the gear.

[0049] The clamping assembly 25 includes a first rotating rod 251, a second rotating rod 252, a third rotating rod 253, a connecting disk 254 and a clamping block 255. The fixed disk 23 is rotatably connected to a plurality of first rotating rods 251 at equal intervals on the end surface away from the first mounting seat 22. Each first rotating rod 251 is rotatably connected to the second rotating rod 252, and each second rotating rod 252 is rotatably connected to the third rotating rod 253. Multiple third rotating rods 253 are rotatably connected to the connecting disk 254, and the connecting disk 254 is fixedly connected to a plurality of clamping blocks 255 for clamping gears.

[0050] The fixed disk 23 has a shaft in the middle, and the connecting disk 254 is slidably mounted on the outside of the shaft in the middle of the fixed disk 23, so that the fixed disk 23 can drive the connecting disk 254 to rotate. When the first rotating rod 251, the second rotating rod 252, and the third rotating rod 253 rotate, the angle between them increases, causing the first rotating rod 251, the second rotating rod 252, and the third rotating rod 253 to extend, thereby increasing the overall length of the clamping assembly 25.

[0051] Preferably, the shafts of the first, second, and third rotating rods 251, 252, and 253 are each fitted with latches for locking the shafts and bearings. The shafts are provided with retaining holes for the latches 5 to pass through, and the outer sides of the bearings are provided with multiple sets of retaining holes for the latches 5 to pass through, spaced evenly apart. When the latches pass through the retaining holes on the shafts and bearings and engage, the extended angles between the first, second, and third rotating rods 251, 252, and 253 are fixed.

[0052] When in use, the connecting plate 254 is moved in the direction of approaching or away from the first motor 21 according to the length of the gear, and the connecting plate 254 drives the first rotating rod 251 to rotate in the direction of approaching or away from the first motor 21 through the third rotating rod 253 and the second rotating rod 252. When the length is adjusted to a suitable position, the pin is inserted into the rotating shaft of the first rotating rod 251, the second rotating rod 252, and the third rotating rod 253, thereby preventing the first rotating rod 251, the second rotating rod 252, and the third rotating rod 253 from rotating during the cutting process; at this time, the gear is clamped between the clamping block 255 to fix the gear, and then the first motor 21 is started. The output end of the first motor 21 drives the gear to rotate through the fixing plate 23, the first rotating rod 251, the second rotating rod 252, the third rotating rod 253, the connecting plate 254, and the clamping block 255, and the output end of the second motor 33 drives the hob 34 to rotate, thereby realizing cutting of the gear.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A gear hobbing dry cutting device, comprising a frame (1), characterized in that: The frame (1) is connected to a gear fixing assembly (2) for fixing the gear and driving the gear to rotate so as to facilitate cutting the gear; The frame (1) is connected to a hob assembly (3) for cutting gears; The hob assembly (3) is connected to an atomizing gun assembly (4) for atomizing cutting oil to lubricate and cool the gears; The atomizing gun assembly (4) comprises a gun body (43), a mist outlet assembly, a transmission assembly and an adjustment assembly. The gun body (43) is arranged on the hob assembly (3). The head of the gun body (43) is connected to the mist outlet assembly, the middle of the gun body (43) is connected to the transmission assembly, and the tail of the gun body (43) is connected to the adjustment assembly. The head of the gun body (43) and the middle of the gun body (43) are threadedly connected, the middle of the gun body (43) and the tail of the gun body (43) are threadedly connected, the mist outlet assembly is connected to the transmission assembly, and the transmission assembly is connected to the adjustment assembly.

2. The gear hobbing dry cutting device according to claim 1, characterized in that: The mist outlet assembly comprises a mist outlet (41), a first pipe (44) and a second pipe (45); the second pipe (45) and a plurality of first pipes (44) are provided in the head of the gun body (43); the plurality of first pipes (44) are all connected to the second pipe (45); a mist outlet (41) is provided on the side wall of the head of the gun body (43); the mist outlet (41) is connected to the first pipe (44).

3. The gear hobbing dry cutting device according to claim 2, characterized in that: The transmission assembly comprises an oil inlet pipe (42), a third pipe (47) and an air inlet pipe (46); the third pipe (47) is opened in the middle of the gun body (43); the oil inlet pipe (42) and the air inlet pipe (46) are fixedly connected to the side wall of the middle of the gun body (43); the oil outlet of the oil inlet pipe (42) is communicated with the head end of the third pipe (47); the air outlet of the air inlet pipe (46) is communicated with the tail end of the third pipe (47).

4. The gear hobbing dry cutting device according to claim 3, characterized in that: The second pipe (45) and the third pipe (47) are in communication.

5. The gear hobbing dry cutting device according to claim 4, characterized in that: The adjustment assembly includes an electromagnet (48) and a spring (49). Two electromagnets (48) are connected to the tail of the gun body (43). One electromagnet (48) is fixedly connected to the inside of the gun body (43). The other set of electromagnets (48) is limitedly slidably connected to the connection between the air intake pipe (46) and the third pipe (47). A spring (49) is installed between the two electromagnets (48).

6. The gear hobbing dry cutting device according to claim 5, characterized in that: The hob assembly (3) comprises a mounting frame (31), a connecting block (32), a second motor (33) and a hob (34); the mounting frame (31) is fixedly connected to the frame (1); the top side of the mounting frame (31) is fixedly connected to the connecting block (32); the second motor (33) is fixedly mounted on the top of the connecting block (32); the output end of the second motor (33) rotates through the connecting block (32) and extends to the bottom thereof and is fixedly connected to the hob (34); the hob (34) is rotatably connected to the connecting block (32).

7. The gear hobbing dry cutting device according to claim 6, characterized in that: The gear fixing assembly (2) comprises a first motor (21), a first mounting seat (22), a fixing plate (23), a second mounting seat (24) and a clamping assembly (25); the first mounting seat (22) and the second mounting seat (24) are fixedly connected to the frame (1); an end of the first mounting seat (22) away from the second mounting seat (24) is fixedly connected to the first motor (21); an end of the first mounting seat (22) close to the second mounting seat (24) is rotatably connected to the fixing plate (23); an output end of the first motor (21) rotates through the first mounting seat (22) and is fixedly connected to the fixing plate (23); an end of the fixing plate (23) away from the first mounting seat (22) is connected to the clamping assembly (25); the fixing plate (23) and the clamping assembly (25) are located above the transverse plate of the second mounting seat (24); and a gear is connected to the clamping assembly (25).

8. The gear hobbing dry cutting device according to claim 7, characterized in that: The clamping assembly (25) comprises a first rotating rod (251), a second rotating rod (252), a third rotating rod (253), a connecting disk (254) and a clamping block (255); a plurality of first rotating rods (251) are rotatably connected at equal intervals on the end surface of the fixed disk (23) away from the first mounting seat (22); each first rotating rod (251) is rotatably connected to the second rotating rod (252); each second rotating rod (252) is rotatably connected to the third rotating rod (253); the plurality of third rotating rods (253) are rotatably connected to the connecting disk (254); and the connecting disk (254) is fixedly connected to a plurality of clamping blocks (255) for clamping gears.

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