Impeller machining device for Roots blower

Abstract

The invention discloses an impeller machining device for a Roots blower, and relates to the technical field of Roots blower impeller machining. The device comprises a rack, three-jaw chucks are installed on the two sides of the inner wall of the rack correspondingly, a linear sliding rail module is fixedly installed in the rack, a support is installed on the linear sliding rail module, a rotating frame is rotatably installed in the support, a first telescopic hydraulic cylinder is fixedly installed on the outer side of the rotating frame, and a second telescopic hydraulic cylinder is fixedly installed on the outer side of the first telescopic hydraulic cylinder. A cutting shaft shell is fixedly installed at the telescopic end of the first telescopic hydraulic cylinder, and a cutting main shaft is rotationally installed at the bottom of the cutting shaft shell. When an outer convex surface of an impeller is cut, the fixed cutting knife and the adjustable cutting knife integrally rotate and are distributed circumferentially, the cutting area can be provided to the maximum extent, the cutting speed is high, when an inner concave surface of the impeller is cut, the fixed cutting knife and the adjustable cutting knife independently rotate and are distributed linearly, and the concave surface can be finely machined; and therefore, machining of the impeller in a complex shape can be efficiently completed.

Description

Technical Field

[0001] The invention relates to the technical field of Roots blower impeller processing, and in particular to an impeller processing device for a Roots blower. Background Art

[0002] As a common gas compression equipment, Roots blower is widely used in industrial fields, such as sewage treatment, air compression, gas transportation, etc. In the working principle of Roots blower, the design and processing accuracy of the impeller are the key factors affecting its performance. As the core component of Roots blower, the impeller is directly related to the efficiency, durability and operation stability of the blower.

[0003] The impeller of the Roots blower usually adopts a complex three-dimensional curved surface structure, and the processing difficulty of the impeller is relatively large. The traditional impeller processing methods mainly include milling, grinding, etc. These methods often require a lot of manual intervention, and the processing accuracy is difficult to control, especially when producing large quantities of fan impellers, the process cost is high and the production efficiency is low. In a Chinese patent (publication number: CN118650477A), an impeller processing device for a Roots blower is disclosed, including a shell, a first slide is fixedly installed on the back of the shell, a power box is movably connected in the middle of the first slide, and second slides are fixedly installed at the front and rear ends of the middle of the shell, respectively, a limit rod is fixedly installed in the middle of the shell and located in the middle of the two second slides, and a dividing plate is fixedly installed on one side of the middle of the shell. This patent and the prior art both use linear milling and milling along the axis of the impeller. Therefore, the impeller needs to rotate during the processing. The impeller is in a non-fixed state and is prone to unstable factors such as vibration. In addition, since the impeller usually adopts a complex three-dimensional curved surface structure, the cutter head of reciprocating linear milling is small, the single milling amount is small, and the processing efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problem and provide an impeller processing device for a Roots blower.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: An impeller processing device for a Roots blower comprises a frame, two sides of the inner wall of the frame are equipped with three-jaw chucks, a linear slide module is fixedly installed inside the frame, a bracket is installed on the linear slide module, a rotating frame is rotatably installed inside the bracket, a telescopic hydraulic cylinder 1 is fixedly installed on the outer side of the rotating frame, a cutting shaft housing is fixedly installed on the telescopic end of the telescopic hydraulic cylinder 1, and a cutting spindle is rotatably installed on the bottom of the cutting shaft housing; A cutting tool holder is fixedly installed at the bottom of the cutting spindle, and two groups of fixed cutting knives are rotatably installed inside the cutting tool holder. A lifting frame is slidably connected to the bottom of the cutting spindle, and three groups of hinged rods are hinged at the bottom of the lifting frame. The bottom ends of the three groups of hinged rods are hinged with tool sleeves, and an adjustable cutting knife is rotatably installed inside the tool sleeve. The adjustable cutting knife and the fixed cutting knife can rotate independently, and tool grooves are opened on both sides of the cutting tool holder, and the tool sleeve can slide along the tool grooves.

[0006] Furthermore, a worm gear is fixedly installed on the top of the adjustable cutting knife and the fixed cutting knife, and slide grooves are opened on both sides of the cutting tool holder. Slide blocks are slidably connected inside the two groups of slide grooves, and a worm is rotatably installed between the two groups of slide blocks. When the adjustable cutting knife and the fixed cutting knife are arranged in a straight line, the worm can engage with multiple groups of worm gears at the same time.

[0007] Furthermore, a cutting motor is fixedly installed inside the cutting shaft housing, and a cutting driving wheel is fixedly installed at the bottom of the output end of the cutting motor, a sliding key is provided on the outer side of the cutting spindle, and a cutting gear sleeve is sleeved on the outer side of the cutting spindle, and a plurality of key grooves are provided in an inner ring of the cutting gear sleeve, and the sliding key is slidably connected in the key groove, and a second telescopic hydraulic cylinder is fixedly installed inside the cutting shaft housing, and a swivel is fixedly installed at the bottom of the telescopic end of the second telescopic hydraulic cylinder, and the swivel is rotatably installed on the top of the cutting gear sleeve, and a transmission shaft is rotatably installed inside the cutting shaft housing, a transmission wheel is fixedly installed on the upper half of the transmission shaft, and a driving bevel gear is fixedly installed on the lower half of the transmission shaft, and a driven bevel gear is fixedly installed on one end of the worm, and when the slider descends to the bottom, the driven bevel gear meshes with the driving bevel gear, and the transmission wheel and the cutting driving wheel can mesh on both sides of the cutting gear sleeve.

[0008] Furthermore, a connecting sleeve is provided at the bottom of the cutting gear sleeve, a connecting column is fixedly installed at the top of the lifting frame, and the connecting column is rotatably installed at the bottom of the connecting sleeve.

[0009] Furthermore, a spindle transmission cavity is opened inside the cutting spindle, and a lifting frame is slidably connected to the spindle transmission cavity. A reversing wheel is rotatably installed inside the spindle transmission cavity, and external spur teeth are arranged on the outside of the lifting frame. A gear rod is fixedly installed on the top of the slider, and the gear rod and the external spur teeth are respectively meshed with both sides of the reversing wheel, and a support spring is arranged between the slider and the bottom of the slide groove.

[0010] Furthermore, a locking slot is provided at the top of the cutting spindle, and a locking assembly is fixedly installed inside the cutting shaft housing. The locking assembly consists of an electric telescopic rod and a locking plug. The locking plug is fixedly installed at the telescopic end of the electric telescopic rod. When the locking plug is inserted into the locking slot, the driven bevel gear and the driving bevel gear are located on the same side.

[0011] Furthermore, guide holes are provided on both sides of the cutting tool holder, a guide rod is fixedly installed on the side of the tool sleeve close to the tool groove, the guide rod is inserted in the guide hole, and a socket is provided on the side of the tool sleeve close to the tool groove, and sliding holes are provided on the outer sides of the adjustable cutting tool and the fixed cutting tool, and a pin is slidably connected inside the sliding hole, and a plug-in top spring is provided between the pin and the inner wall of the sliding hole, and a sleeve groove is provided on the upper half of the tool groove, and the tool sleeve can be inserted in the sleeve groove, and a push rod is provided on the inner wall of the sleeve groove, and the pin and the push rod can both be inserted in the socket, and two groups of mounting holes are provided inside the cutting tool holder, and the fixed cutting tool is rotatably installed in the mounting hole, a through hole is provided between the mounting hole and the sleeve groove, a clamping rod is slidably connected inside the through hole, and a clamping spring is provided between the clamping rod and the inner wall of the through hole.

[0012] Furthermore, the push rod is made of permanent magnet, and the bottom of the adjustable cutting knife and the fixed cutting knife are fixedly installed with four groups of cutter heads, which are distributed in a ring shape, and the sliding holes are opened in four groups and distributed corresponding to the cutter heads.

[0013] Furthermore, the bracket is composed of a circular ring and a gear ring, the circular ring and the gear ring are connected by a cross brace, the telescopic hydraulic cylinder is fixedly installed on the cross brace, the circular ring and the gear ring are rotatably installed on the top of the bracket, a driving motor is fixedly installed on the top of the bracket, a driving wheel is fixedly installed on the output end of the driving motor, and the driving wheel is meshed with the gear ring.

[0014] Furthermore, a cooling pipe is fixedly installed on the outer side of the cross brace, and a laser distance measuring sensor is fixedly installed on the bottom of the cutting shaft housing.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention adopts a tool rotation method to enable the tool to run along a designed trajectory. The impeller is fixedly clamped to avoid vibration or instability that may occur during the rotation process, thereby helping to maintain high precision during the processing process. Especially for impellers with complex shapes, fixed processing can ensure precise contact between the tool and the workpiece and avoid deviations that may be caused by rotation processing.

[0016] 2. The cutting head of the present invention is composed of a fixed cutting knife and an adjustable cutting knife. When cutting the outer convex surface of the impeller, the fixed cutting knife and the adjustable cutting knife rotate as a whole and are distributed in a circle, which can provide a cutting area in the maximum range and has a fast cutting speed. When cutting the inner concave surface of the impeller, the fixed cutting knife and the adjustable cutting knife rotate separately and are distributed in a straight line, which can perform fine processing on the concave surface, thereby efficiently completing the processing of impellers with complex shapes.

[0017] 3. The present invention changes the angle between the fixed cutting tool and the adjustable cutting tool group, thereby enabling different cutter heads to participate in processing. After processing a convex surface and a concave surface, a group of cutter heads is switched, which can extend the service life of the cutter heads and improve processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the frame of the present invention; Figure 3 It is a schematic diagram of the support structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the cutting shaft housing of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the cutting spindle of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the cutting gear sleeve of the present invention; Figure 7 It is a schematic diagram of the transmission structure of the fixed cutting knife and the adjustable cutting knife of the present invention; Figure 8 It is a schematic diagram of the structure of the cutting tool holder of the present invention; Fig. 9 It is a schematic diagram of the structure of the adjustable cutting knife of the present invention; Fig.10 The present invention Fig. 9 A schematic diagram of the enlarged structure of part A.

[0019] Figure numerals: 1, frame; 2, linear slide module; 3, three-jaw chuck; 4, bracket; 41, driving wheel; 42, rotating frame; 5, telescopic hydraulic cylinder 1; 6, cutting shaft housing; 61, cutting drive wheel; 62, transmission shaft; 63, transmission wheel; 64, driving bevel gear; 65, locking assembly; 66, telescopic hydraulic cylinder 2; 7, cutting spindle; 71, spindle transmission chamber; 711, reversing wheel; 72, sliding key; 73, cutting gear sleeve; 731, connecting sleeve; 732, keyway; 74, locking slot; 8, cutting tool Frame; 81, knife groove; 82, sleeve groove; 83, push rod; 84, guide hole; 85, slide groove; 86, slider; 87, worm; 88, gear rod; 89, driven bevel gear; 810, support spring; 811, clamping rod; 9, fixed cutting knife; 10, adjustable cutting knife; 101, worm gear; 102, knife sleeve; 103, lifting frame; 104, connecting column; 105, external straight teeth; 106, hinged rod; 107, guide rod; 108, socket; 109, pin column; 110, plug-in top spring; 11, cooling pipe. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Embodiment 1, as Figure 1-Figure 10As shown, an impeller processing device for a Roots blower comprises a frame 1, three-jaw chucks 3 are installed on both sides of the inner wall of the frame 1, a linear slide module 2 is fixedly installed inside the frame 1, a bracket 4 is installed on the linear slide module 2, a rotating frame 42 is rotatably installed inside the bracket 4, a telescopic hydraulic cylinder 5 is fixedly installed on the outer side of the rotating frame 42, a cutting shaft housing 6 is fixedly installed at the telescopic end of the telescopic hydraulic cylinder 5, and a cutting spindle 7 is rotatably installed at the bottom of the cutting shaft housing 6; A cutting tool holder 8 is fixedly installed at the bottom of the cutting spindle 7, and two groups of fixed cutting knives 9 are rotatably installed inside the cutting tool holder 8. A lifting frame 103 is slidably connected to the bottom of the cutting spindle 7. Three groups of hinged rods 106 are hinged at the bottom of the lifting frame 103. The bottom ends of the three groups of hinged rods 106 are hinged with a tool sleeve 102. An adjustable cutting knife 10 is rotatably installed inside the tool sleeve 102. The adjustable cutting knife 10 and the fixed cutting knife 9 can rotate independently. Tool grooves 81 are opened on both sides of the cutting tool holder 8, and the tool sleeve 102 can slide along the tool grooves 81.

[0022] During processing, open the cabinet door of the frame 1, clamp the two ends of the impeller on two sets of three-jaw chucks 3 respectively, and the center of the rotating frame 42 is located on the axis of the impeller. Then, program according to the outer contour curve size of the impeller, so that the cutting spindle 7 can be driven by the rotation of the rotating frame 42 and the telescopic hydraulic cylinder 5 to run along the outer contour curve trajectory of the impeller. Since the outer contour of the Roots blower impeller is composed of three outer convex surfaces and three inner concave surfaces, this results in that when processing the concave surface, the tool radius cannot be too large, otherwise the concave surface fine processing cannot be completed, but if the tool radius is too small, the processing efficiency is as low as reciprocating linear cutting. Therefore, the present invention uses the setting of a special cutting head. When cutting the outer convex surface of the impeller, the fixed cutting tool 9 and the adjustable cutting tool 10 cannot rotate alone, and the whole rotates with the cutting spindle 7 and is distributed in a circle, which can provide the cutting area in the largest range, and the cutting force is evenly distributed, which can reduce the load of a single tool, reduce tool wear and extend the service life, so it can At high speed cutting, the cutting speed is fast. When cutting the inner concave surface of the impeller, the lifting frame 103 is controlled to rise. The lifting frame 103 drives the tool sleeves 102 on both sides to slide into the tool groove 81 through the hinge rod 106, and the tool sleeve 102 drives the adjustable cutting knife 10 to slide into the tool groove 81. At this time, the fixed cutting knife 9 and the adjustable cutting knife 10 rotate separately and are distributed in a straight line. The cutting radius is small, and the concave surface can be finely processed. In order to prevent cutting interference, a certain distance is required between the fixed cutting knife 9 and the adjacent adjustable cutting knife 10. Therefore, after the first concave surface cutting is completed, the linear slide rail module 2 needs to cooperate to operate so that the fixed cutting knife 9 and the adjacent adjustable cutting knife 10 can cut the spacing part. It should be noted that the inner concave surface range is a part with a width less than the circumferential cutting diameter of the fixed cutting knife 9 and the adjustable cutting knife 10, so the circumferential cutting area is much larger than the linear cutting part. Compared with the existing processing, the processing efficiency can be greatly improved.

[0023] At the same time, when the equipment of the present invention performs large-scale cutting, the outermost cutter heads of the fixed cutting knife 9 and the adjustable cutting knife 10 participate in the cutting. Therefore, after cutting the outer convex surface and the inner concave surface once, the cutter heads on the fixed cutting knife 9 and the adjustable cutting knife 10 are replaced, and the new cutter heads participate in the next cutting, which can greatly improve the service life of the fixed cutting knife 9 and the adjustable cutting knife 10 and improve the cutting accuracy.

[0024] Embodiment 2, based on the above embodiment, further includes that a worm gear 101 is fixedly installed on the top of the adjustable cutting tool 10 and the fixed cutting tool 9, slide grooves 85 are opened on both sides of the cutting tool holder 8, and sliders 86 are slidably connected inside the two groups of slide grooves 85. A worm 87 is rotatably installed between the two groups of sliders 86. When the adjustable cutting tool 10 and the fixed cutting tool 9 are arranged side by side in a straight line, the worm 87 can engage with multiple groups of worm gears 101 at the same time.

[0025] The lifting frame 103 is controlled to rise, and the lifting frame 103 drives the tool sleeves 102 on both sides to slide into the tool groove 81 through the hinge rod 106, and the tool sleeve 102 drives the adjustable cutting knife 10 to slide into the tool groove 81. At this time, the fixed cutting knife 9 and the adjustable cutting knife 10 rotate separately and are distributed in a straight line. Then the slider 86 is controlled to slide downward, and the slider 86 drives the worm 87 to descend. The worm 87 descends to engage with all the worm wheels 101, so the worm 87 is controlled to rotate, and the worm 87 drives all the worm wheels 101 to rotate. The adjustable cutting knife 10 and the fixed cutting knife 9 rotate separately at the same time, and there is no need to set up a separate drive. Therefore, the overall cutting head is small in size and does not affect the fine processing of the inner concave surface.

[0026] Embodiment 3, on the basis of the above embodiment, further includes: a cutting motor is fixedly installed inside the cutting shaft housing 6, a cutting drive wheel 61 is fixedly installed at the bottom of the output end of the cutting motor, a sliding key 72 is arranged on the outer side of the cutting spindle 7, a cutting gear sleeve 73 is sleeved on the outer side of the cutting spindle 7, a plurality of key grooves 732 are provided in the inner ring of the cutting gear sleeve 73, the sliding key 72 is slidably connected in the key groove 732, a telescopic hydraulic cylinder 2 66 is fixedly installed inside the cutting shaft housing 6, and the telescopic end of the telescopic hydraulic cylinder 2 66 is fixedly installed inside the cutting shaft housing 6. A swivel is fixedly installed at the bottom, and the swivel is rotatably installed on the top of the cutting gear sleeve 73. A transmission shaft 62 is rotatably installed inside the cutting shaft housing 6. A transmission wheel 63 is fixedly installed on the upper half of the transmission shaft 62, and a driving bevel gear 64 is fixedly installed on the lower half of the transmission shaft 62. A driven bevel gear 89 is fixedly installed on one end of the worm 87. When the slider 86 descends to the lowest point, the driven bevel gear 89 meshes with the driving bevel gear 64, and the transmission wheel 63 and the cutting drive wheel 61 can mesh on both sides of the cutting gear sleeve 73.

[0027] During large-scale cutting, the fixed cutting blade 9 and the adjustable cutting blade 10 are distributed in a circle. At this time, the cutting gear sleeve 73 is located at the bottom and only meshes with the cutting drive wheel 61, and the sliding key 72 is inserted in the keyway 732. Therefore, the cutting drive wheel 61 can drive the cutting spindle 7 to rotate through the cutting gear sleeve 73, and the cutting spindle 7 drives the fixed cutting blade 9 and the adjustable cutting blade 10 to rotate simultaneously. During the straight line fine cutting, the lifting frame 103 is controlled to rise, and the lifting frame 103 drives the knife sleeves 102 on both sides to slide into the knife groove 81 through the hinge rod 106, and the knife sleeve 102 drives the adjustable cutting knife 10 to slide into the knife groove 81. At this time, the fixed cutting knife 9 and the adjustable cutting knife 10 rotate separately and are distributed in a straight line. Then the slider 86 is controlled to slide downward, and the slider 86 drives the worm 87 to descend. The worm 87 descends to mesh with all the worm gears 101, and the slider 86 drives the driven bevel gear 89 to descend. The driven bevel gear 89 meshes with the driving bevel gear 64. At the same time, the telescopic hydraulic cylinder 2 66 is controlled to operate, and the telescopic hydraulic cylinder 2 66 drives the cutting gear through the swivel. The sleeve 73 rises, and the cutting gear sleeve 73 rises to a position where it is meshed with the transmission wheel 63 and the cutting drive wheel 61 at the same time, and the sliding key 72 disengages from the keyway 732. At this time, the cutting drive wheel 61 drives the transmission wheel 63 to rotate through the cutting gear sleeve 73, and the cutting spindle 7 does not rotate. The transmission wheel 63 drives the driven bevel gear 89 to rotate through the transmission shaft 62 and the driving bevel gear 64, and the driven bevel gear 89 drives the worm 87 to rotate. The worm 87 drives the adjustable cutting knife 10 and the fixed cutting knife 9 to rotate separately at the same time through the worm wheel 101. Through the arrangement of this embodiment, there is no need to set up the drive of the worm 87 separately, and the structure is more compact, ensuring that the cutting head part will not be too bloated.

[0028] Embodiment 4, based on the above embodiment, further includes: a connecting sleeve 731 is provided at the bottom of the cutting gear sleeve 73 , a connecting column 104 is fixedly installed on the top of the lifting frame 103 , and the connecting column 104 is rotatably installed at the bottom of the connecting sleeve 731 .

[0029] Furthermore, a spindle transmission chamber 71 is provided inside the cutting spindle 7, and a lifting frame 103 is slidably connected to the spindle transmission chamber 71. A reversing wheel 711 is rotatably installed inside the spindle transmission chamber 71, and an external spur tooth 105 is provided on the outer side of the lifting frame 103. A gear rod 88 is fixedly installed on the top of the slider 86. The gear rod 88 and the external spur tooth 105 are respectively meshed on both sides of the reversing wheel 711, and a support spring 810 is provided between the slider 86 and the bottom of the inner groove 85.

[0030] During the fine straight-line cutting, the telescopic hydraulic cylinder 66 is controlled to operate, and the telescopic hydraulic cylinder 66 drives the cutting gear sleeve 73 to rise through the swivel, and the cutting gear sleeve 73 rises to a position where it is meshed with the transmission wheel 63 and the cutting drive wheel 61 at the same time, and the sliding key 72 is disengaged from the key slot 732. At the same time, the cutting gear sleeve 73 drives the lifting frame 103 to rise through the connecting sleeve 731 and the connecting column 104, and the lifting frame 103 drives the knife sleeves 102 on both sides to slide into the knife slot 81 through the hinge rod 106. When the lifting frame 103 rises a certain distance, the outer spur teeth 105 mesh with the reversing wheel 711, and the outer spur teeth 105 drive the reversing wheel 711 to rotate, and the reversing wheel 711 is reversing. The pulley 711 drives the slider 86 to descend through the gear rod 88, and the slider 86 drives the worm 87 to descend. The worm 87 descends until it is meshed with all the worm wheels 101, and the slider 86 drives the driven bevel gear 89 to descend. The driven bevel gear 89 is meshed with the driving bevel gear 64. Through this method, the worm wheels 101 will first move inward and then the worm 87 will descend. The worm 87 will not produce motion interference with the worm wheel 101. Therefore, through the setting of this embodiment, only the telescopic hydraulic cylinder 2 66 needs to be set to simultaneously control the lifting and lowering of the cutting gear sleeve 73, the lifting frame 103 and the slider 86 without motion interference, and the structure is more compact.

[0031] Embodiment 5, on the basis of the above embodiment, further includes: a locking slot 74 is opened on the top of the cutting spindle 7, a locking assembly 65 is fixedly installed inside the cutting shaft housing 6, the locking assembly 65 is composed of an electric telescopic rod and a locking plug, the locking plug is fixedly installed at the telescopic end of the electric telescopic rod, when the locking plug is inserted into the locking slot 74, the driven bevel gear 89 and the driving bevel gear 64 are located on the same side.

[0032] Furthermore, guide holes 84 are provided on both sides of the cutting tool holder 8, a guide rod 107 is fixedly installed on the side of the tool sleeve 102 close to the tool groove 81, and the guide rod 107 is plugged into the guide hole 84. A plug hole 108 is provided on the side of the tool sleeve 102 close to the tool groove 81. Sliding holes are provided on the outer sides of the adjustable cutting tool 10 and the fixed cutting tool 9. A pin 109 is slidably connected inside the sliding hole. A plug-in top spring 110 is provided between the pin 109 and the inner wall of the sliding hole. A sleeve groove 82 is provided in the upper half of the groove 81, and the tool sleeve 102 can be inserted in the sleeve groove 82. A push rod 83 is provided on the inner wall of the sleeve groove 82. The pin 109 and the push rod 83 can be inserted in the socket 108. Two groups of mounting holes are provided inside the cutting tool holder 8, and the fixed cutting tool 9 is rotatably installed in the mounting holes. A through hole is provided between the mounting hole and the sleeve groove 82, and a clamping rod 811 is slidably connected inside the through hole, and a retaining spring is provided between the clamping rod 811 and the inner wall of the through hole.

[0033] Due to the use of the method of the above embodiment, the cutting spindle 7, the adjustable cutting knife 10 and the fixed cutting knife 9 are driven by the same drive. Therefore, when switching, the cutting spindle 7, the adjustable cutting knife 10 and the fixed cutting knife 9 need to be locked separately to ensure smooth cutting. If the existing locking structure is used, each one is set separately and driven separately, which will also cause the cutting head to be too bloated.

[0034] Therefore, it is necessary to adopt the arrangement of the present embodiment. When cutting over a large area, the pin 109 in the fixed cutting knife 9 is inserted into the through hole under the action of the plug-in top spring 110, and the fixed cutting knife 9 cannot rotate on its own. The pin 109 in the adjustable cutting knife 10 is inserted into the insertion hole 108 under the action of the plug-in top spring 110, and the adjustable cutting knife 10 cannot rotate on its own. At the same time, the locking block is away from the locking slot 74, and the cutting spindle 7 can rotate. At this time, both the adjustable cutting knife 10 and the fixed cutting knife 9 cannot rotate on their own, and the cutting is stable.

[0035] During fine straight line cutting, the adjustable cutting knife 10 slides into the cutting groove 81, the cutting sleeve 102 slides into the sleeve groove 82, the ejector rod 83 is inserted into the insertion hole 108, and the pin 109 is pushed out. At this time, the adjustable cutting knife 10 can rotate relative to the cutting sleeve 102. At the same time, the cutting sleeve 102 pushes the clamping rod 811 to slide toward the fixed cutting knife 9. The clamping rod 811 pushes the pin 109 in the fixed cutting knife 9 out of the through hole. The fixed cutting knife 9 can rotate relative to the cutting tool holder 8. At the same time, the electric telescopic rod drives the locking block to be inserted into the locking slot 74, locks the cutting spindle 7, and locks it at a fixed angle, so that the driven bevel gear 89 can mesh with the driving bevel gear 64.

[0036] Therefore, through the arrangement of this embodiment, it is only necessary to set the locking drive of the cutting spindle 7, and the adjustable cutting blade 10 and the fixed cutting blade 9 can complete the locking switching during the adjustment process.

[0037] Embodiment 6, based on the above embodiment, further includes that the top rod 83 is made of permanent magnet, the bottom of the adjustable cutting knife 10 and the fixed cutting knife 9 are fixedly installed with four groups of cutter heads, the four groups of cutter heads are distributed in a ring shape, and four groups of sliding holes are opened and distributed corresponding to the cutter heads.

[0038] This embodiment shows how to realize the switching of the cutter heads. After the straight line fine cutting is completed, the cutting drive wheel 61 is controlled to drive the transmission wheel 63 to rotate through the cutting gear sleeve 73, and the cutting spindle 7 does not rotate. The transmission wheel 63 drives the driven bevel gear 89 to rotate through the transmission shaft 62 and the driving bevel gear 64, and the driven bevel gear 89 drives the worm 87 to rotate. The worm 87 drives the adjustable cutting knife 10 and the fixed cutting knife 9 to rotate at the same time through the worm gear 101, and the adjustable cutting knife 10 and the fixed cutting knife 9 rotate at an angle of 90 degrees each time, so that the next group of pins 109 can rotate to the position of the socket 108. When the adjustable cutting knife 10 is away from the knife groove 81, the adjustable cutting knife 10 is locked, and the other group of cutter heads are located at the outermost side to participate in the next large-scale cutting, and the control is simple.

[0039] Embodiment 7, on the basis of the above embodiment, further includes: the bracket 4 is composed of a circular ring and a gear ring, the circular ring and the gear ring are connected by a cross brace, the telescopic hydraulic cylinder 5 is fixedly mounted on the cross brace, the circular ring and the gear ring are both rotatably mounted on the top of the bracket 4, a driving motor is fixedly mounted on the top of the bracket 4, a driving wheel 41 is fixedly mounted on the output end of the driving motor, and the driving wheel 41 is meshed with the gear ring.

[0040] Through the arrangement of this embodiment, the rotation angle of the bracket 4 can be stably controlled, thereby controlling the cutting positions of the adjustable cutting blade 10 and the fixed cutting blade 9.

[0041] Embodiment 8, based on the above embodiment, further includes: a cooling pipe 11 is fixedly installed on the outer side of the cross brace, and a laser distance measuring sensor is fixedly installed on the bottom of the cutting shaft housing 6.

[0042] By providing the cooling pipe 11, the cutting part can be cooled and flushed, and by providing the laser distance measuring sensor, the device can monitor the cutting depth, which is convenient for fine adjustment during the processing.

[0043] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An impeller processing device for a Roots blower, comprising a frame (1), characterized in that: Three-jaw chucks (3) are installed on both sides of the inner wall of the frame (1); a linear guide rail module (2) is fixedly installed inside the frame (1); a bracket (4) is installed on the linear guide rail module (2); a rotating frame (42) is rotatably installed inside the bracket (4); a telescopic hydraulic cylinder (5) is fixedly installed on the outer side of the rotating frame (42); a cutting shaft housing (6) is fixedly installed at the telescopic end of the telescopic hydraulic cylinder (5); and a cutting spindle (7) is rotatably installed at the bottom of the cutting shaft housing (6); A cutting tool holder (8) is fixedly mounted at the bottom of the cutting spindle (7), two groups of fixed cutting knives (9) are rotatably mounted inside the cutting tool holder (8), a lifting frame (103) is slidably connected to the bottom of the cutting spindle (7), three groups of hinged rods (106) are hinged at the bottom of the lifting frame (103), the bottom ends of the three groups of hinged rods (106) are hinged with a knife sleeve (102), an adjustable cutting knife (10) is rotatably mounted inside the knife sleeve (102), the adjustable cutting knife (10) and the fixed cutting knife (9) can both rotate independently, knife grooves (81) are provided on both sides of the cutting tool holder (8), and the knife sleeve (102) can slide along the knife grooves (81).

2. The impeller processing device for a Roots blower according to claim 1, characterized in that: The tops of the adjustable cutting blade (10) and the fixed cutting blade (9) are both fixedly mounted with worm gears (101); both sides of the cutting blade holder (8) are provided with slide grooves (85); the interiors of the two sets of slide grooves (85) are slidably connected with sliders (86); a worm (87) is rotatably mounted between the two sets of sliders (86); when the adjustable cutting blade (10) and the fixed cutting blade (9) are arranged side by side in a straight line, the worm (87) can mesh with multiple sets of worm gears (101) at the same time.

3. The impeller processing device for a Roots blower according to claim 2, characterized in that: A cutting motor is fixedly installed inside the cutting shaft housing (6), and a cutting drive wheel (61) is fixedly installed at the bottom of the output end of the cutting motor. A sliding key (72) is arranged on the outer side of the cutting main shaft (7), and a cutting gear sleeve (73) is sleeved on the outer side of the cutting main shaft (7). The inner ring of the cutting gear sleeve (73) is provided with a plurality of key slots (732), and the sliding key (72) is slidably connected in the key slots (732). A telescopic hydraulic cylinder 2 (66) is fixedly installed inside the cutting shaft housing (6), and a swivel is fixedly installed at the bottom of the telescopic end of the telescopic hydraulic cylinder 2 (66). The swivel The ring is rotatably mounted on the top of the cutting gear sleeve (73), a transmission shaft (62) is rotatably mounted inside the cutting shaft housing (6), a transmission wheel (63) is fixedly mounted on the upper half of the transmission shaft (62), a driving bevel gear (64) is fixedly mounted on the lower half of the transmission shaft (62), a driven bevel gear (89) is fixedly mounted on one end of the worm (87), when the slider (86) descends to the lowest position, the driven bevel gear (89) meshes with the driving bevel gear (64), and the transmission wheel (63) and the cutting drive wheel (61) can mesh on both sides of the cutting gear sleeve (73).

4. The impeller processing device for a Roots blower according to claim 3, characterized in that: A connecting sleeve (731) is provided at the bottom of the cutting gear sleeve (73), and a connecting column (104) is fixedly mounted on the top of the lifting frame (103), and the connecting column (104) is rotatably mounted on the bottom of the connecting sleeve (731).

5. The impeller processing device for a Roots blower according to claim 4, characterized in that: A spindle transmission chamber (71) is provided inside the cutting spindle (7), a lifting frame (103) is slidably connected to the spindle transmission chamber (71), a reversing wheel (711) is rotatably installed inside the spindle transmission chamber (71), an outer side of the lifting frame (103) is provided with an external spur tooth (105), a gear rod (88) is fixedly installed on the top of the slider (86), the gear rod (88) and the external spur tooth (105) are respectively meshed on both sides of the reversing wheel (711), and a support spring (810) is provided between the slider (86) and the inner bottom of the slide groove (85).

6. The impeller machining device for a Roots blower according to claim 5, characterized in that: A locking slot (74) is provided at the top of the cutting spindle (7), and a locking assembly (65) is fixedly installed inside the cutting spindle housing (6). The locking assembly (65) is composed of an electric telescopic rod and a locking plug block. The locking plug block is fixedly installed at the telescopic end of the electric telescopic rod. When the locking plug block is inserted into the locking slot (74), the driven bevel gear (89) and the driving bevel gear (64) are located on the same side.

7. The impeller machining device for a Roots blower according to claim 6, characterized in that: Guide holes (84) are provided on both sides of the cutting tool holder (8); a guide rod (107) is fixedly installed on the side of the tool sleeve (102) close to the tool groove (81); the guide rod (107) is inserted into the guide hole (84); a plug hole (108) is provided on the side of the tool sleeve (102) close to the tool groove (81); sliding holes are provided on the outer sides of the adjustable cutting tool (10) and the fixed cutting tool (9); a pin (109) is slidably connected to the inside of the sliding hole; an insert spring (110) is provided between the pin (109) and the inner wall of the sliding hole; The upper part of the knife groove (81) is provided with a sleeve groove (82), the knife sleeve (102) can be inserted into the sleeve groove (82), the inner wall of the sleeve groove (82) is provided with a push rod (83), the pin (109) and the push rod (83) can be inserted into the insertion hole (108), the cutting tool holder (8) is provided with two groups of mounting holes inside, the fixed cutting tool (9) is rotatably mounted in the mounting holes, a through hole is provided between the mounting hole and the sleeve groove (82), a clamping rod (811) is slidably connected inside the through hole, and a clamping spring is provided between the clamping rod (811) and the inner wall of the through hole.

8. The impeller machining device for a Roots blower according to claim 7, characterized in that: The push rod (83) is made of a permanent magnet. The bottoms of the adjustable cutting knife (10) and the fixed cutting knife (9) are both fixedly mounted with four groups of cutter heads, which are distributed in a ring shape. The sliding holes are provided with four groups and are distributed corresponding to the cutter heads.

9. The impeller processing device for a Roots blower according to claim 1, characterized in that: The support (4) is composed of a circular ring and a toothed ring, the circular ring and the toothed ring are connected via a cross brace, a telescopic hydraulic cylinder (5) is fixedly mounted on the cross brace, the circular ring and the toothed ring are both rotatably mounted on the top of the support (4), a driving motor is fixedly mounted on the top of the support (4), a driving wheel (41) is fixedly mounted on the output end of the driving motor, and the driving wheel (41) is meshed with the toothed ring.

10. The impeller processing device for a Roots blower according to claim 9, characterized in that: A cooling pipe (11) is fixedly mounted on the outer side of the cross brace, and a laser distance measuring sensor is fixedly mounted on the bottom of the cutting shaft housing (6).

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