Motor shaft producing and machining device
Through the combined design of the butterfly spring group and the stroke limit plate, the problem of chip breaking needle failure due to fatigue is solved, and efficient chip breaking and surface protection of the motor shaft is achieved to ensure processing quality.
Patent Information
- Application Number
- CN202510713610.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-07-22
AI Technical Summary
In the prior art, the continuous extrusion of the chip-breaking needle of the strip-shaped chips causes the spring fatigue failure and the inability to effectively break the chips, affecting the processing quality of the motor shaft.
The chip breaking needle is elastically supported by a butterfly spring group, and the moving distance is limited through the stroke limit plate to avoid excessive compression. Combined with the negative pressure to absorb debris and heating and prevent blockage, the chip breaking effect is ensured.
The butterfly spring group has strong fatigue resistance, maintains the effectiveness of chip breaking needles, avoids chip wrapping, ensures the machining accuracy and reliability of the motor shaft, prevents debris from scratching the surface, and prevents straws from being blocked.
Smart Images
Figure CN120347287A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of motor shaft processing, and particularly relates to a motor shaft production and processing device. Background Art
[0002] As the core power source of many devices, the quality and precision of the motor shaft directly affect the performance and reliability of the motor. With the continuous development of technology, the requirements for motors are also increasing day by day. Motor shafts usually need to have good mechanical strength, precise dimensions, and a smooth surface.
[0003] Motor shaft turning is a crucial manufacturing process. Motor shaft turning is a process in which blank materials (such as bar stock or forgings) are gradually cut into qualified shaft parts through turning on a lathe according to the drawings and technical requirements of the motor shaft.
[0004] External turning is a common machining method for motor shaft turning. During the machining process, a large amount of continuous chips are generated when the cutting tool contacts the rotating motor shaft. To avoid the continuous chips winding around the cutting tool, a chip breaker needle is usually provided for chip breaking. The continuous chips squeeze the chip breaker needle, and the chip breaker needle squeezes the spring. The elastic force generated by the spring causes the chip breaker needle to squeeze the continuous chips, so that the continuous chips break. During the cutting process, the continuous chips continuously squeeze the chip breaker needle, which leads to continuous squeezing of the spring, easily causing the spring to fatigue and fail, and further causing the chip breaker needle to be unable to break the continuous chips. Summary of the Invention
[0005] The purpose of the present invention is to solve the problem in the prior art that during the cutting process, the continuous chips continuously squeeze the chip breaker needle, which leads to continuous squeezing of the spring, easily causing the spring to fatigue and fail, and further causing the chip breaker needle to be unable to break the continuous chips, and to propose a motor shaft production and processing device.
[0006] To achieve the above purpose, the present invention adopts the following technical solution: Design a motor shaft production and processing device, including a frame. A support frame is slidably connected to the frame. A guide frame is slidably connected to the support frame. The upper end of the guide frame is connected to a tool holder. A cutting tool is connected to the tool holder. The upper end of the tool holder is fixedly connected to a mounting plate. A base frame is fixedly connected to the mounting plate. A movable frame is slidably connected to the base frame. A set of disc springs is connected between the base frame and the movable frame. One end of the movable frame is fixedly connected to a chip breaker needle. The chip breaker needle is located above the cutting tool and is inclined downward towards the cutting tool. A travel limit plate is fixedly connected to the movable frame. There is a gap between one end of the travel limit plate and the mounting plate.
[0007] Preferably, a steering mechanism for preventing broken chips from scratching the machining surface of the motor shaft is connected to the guide frame. The steering mechanism includes an open box, which is fixedly connected to the guide frame. A maintenance plate is connected to the open box, and a filter plate is connected inside the open box. A negative pressure chamber is provided between the filter plate and the open box. The upper end of the negative pressure chamber communicates with a metal suction pipe, and one end of the metal suction pipe passes through the tool rest and is connected to a suction nozzle. A negative pressure fan for generating negative pressure in the negative pressure chamber is connected inside the open box.
[0008] Preferably, the suction nozzle is located above the chip breaker needle and is inclined downward toward the cutting tool.
[0009] Preferably, a pressure detector for detecting the pressure in the negative pressure chamber is connected to the maintenance plate, and an open box is provided at the bottom end of the negative pressure chamber.
[0010] Preferably, a groove frame is fixedly connected to the support frame, and a moisture absorption pad is connected to the groove frame, and the moisture absorption pad faces the open end of the open box.
[0011] Preferably, a softening mechanism for preventing the metal suction pipe from being blocked is connected to the upper end of the open box. The softening mechanism includes a heating wire, which is wound around the outer wall of the metal suction pipe. A sealing pipe is fixedly connected to the upper end of the open box, the heating wire is located inside the sealing pipe, one end of the sealing pipe is connected to an end cover, and a heat preservation layer is connected inside the sealing pipe.
[0012] Preferably, a Teflon coating is provided on the inner part of the metal suction pipe, and a spiral diversion groove is formed on the inner part of the metal suction pipe.
[0013] The beneficial effects of a motor shaft production and processing device proposed by the present invention are as follows: By using a set of disc springs to elastically support the chip breaker needle, the set of disc springs has strong anti-fatigue ability and is not prone to fatigue failure under continuous extrusion for a long time. Moreover, the stroke limiting plate limits the moving distance of the chip breaker needle. When the stroke limiting plate contacts the mounting plate, the set of disc springs cannot be further extruded, avoiding excessive extrusion of the set of disc springs, so that the set of disc springs maintains elasticity and does not undergo fatigue failure, thereby maintaining the chip breaking effect of the chip breaker needle. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural diagram of a motor shaft production and processing device proposed by the present invention Figure 1 ; Figure 2 is a schematic structural diagram of a motor shaft production and processing device proposed by the present invention Figure 2 ; Figure 3 is a schematic structural diagram of the connection between the guide frame and the tool rest in a motor shaft production and processing device proposed by the present inventionFigure 1 ; Figure 4 Structural schematic of the connection between the guide frame and the tool rest in a motor shaft production and processing device proposed by the present invention Figure 2 ; Figure 5 Structural schematic diagram of the connection between the movable frame and the chip breaker needle in a motor shaft production and processing device proposed by the present invention; Figure 6 Structural schematic diagram of the connection between the steering mechanism and the softening mechanism in a motor shaft production and processing device proposed by the present invention; Figure 7 Structural schematic diagram of the connection between the open box and the softening mechanism in a motor shaft production and processing device proposed by the present invention; Figure 8 Cross-sectional structural schematic diagram of the connection between the open box and the softening mechanism in a motor shaft production and processing device proposed by the present invention.
[0015] In the figure: 1, frame; 2, motor; 3, fixture; 4, support frame; 5, first hydraulic rod; 6, second hydraulic rod; 7, guide frame; 8, tool rest; 9, cutting tool; 10, base frame; 11, movable frame; 12, butterfly spring group; 13, chip breaker needle; 14, stroke limit plate; 15, steering mechanism; 16, softening mechanism; 151, open box; 152, maintenance plate; 153, filter plate; 154, negative pressure fan; 155, metal suction pipe; 156, suction nozzle; 157, open box; 158, pressure detector; 159, groove frame; 1510, moisture absorption pad; 161, heating wire; 162, sealing pipe; 163, end cover; 164, heat preservation layer; 165, spiral diversion groove. Detailed implementation manners
[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0017] Example 1: Refer to Figures 1-5, a motor shaft production and processing device, including a frame 1, a motor 2 is fixedly connected to the frame 1, a fixture 3 is fixedly connected to the output end of the motor 2, a support frame 4 is slidably connected to the frame 1, and a first hydraulic rod 5 for driving the support frame 4 to move is connected to the frame 1. A guide frame 7 is slidably connected to the support frame 4, a tool holder 8 is connected to the upper end of the guide frame 7, a second hydraulic rod 6 for driving the tool holder 8 to move is fixedly connected to the upper end of the support frame 4, a cutting tool 9 is connected to the tool holder 8, a mounting plate is fixedly connected to the upper end of the tool holder 8, a base frame 10 is fixedly connected to the mounting plate, a movable frame 11 is slidably connected to the base frame 10, a set of disc springs 12 is connected between the base frame 10 and the movable frame 11, one end of the movable frame 11 is fixedly connected to a chip breaker needle 13, the chip breaker needle 13 is located above the cutting tool 9 and is inclined downward towards the cutting tool 9, and a travel limit plate 14 is fixedly connected to the movable frame 11, and there is a gap between one end of the travel limit plate 14 and the mounting plate.
[0018] Working principle: Fix one end of the motor shaft on the fixture 3. After the motor 2 starts, it drives the fixture 3 to rotate, and the fixture 3 drives the motor shaft to rotate. After the first hydraulic rod 5 starts, it drives the support frame 4 to move a set distance. The support frame 4 drives the guide frame 7 to move, the guide frame 7 drives the tool holder 8 to move, and the tool holder 8 drives the cutting tool 9, so that the cutting tool 9 is located on one side of the motor shaft processing position, and the position of the cutting tool 9 is adjusted to make the cutting tool 9 face the motor shaft processing position; After the second hydraulic rod 6 starts, it drives the tool holder 8 to move a set distance towards the motor shaft. The tool holder 8 moves smoothly under the guidance of the guide frame 7. The tool holder 8 drives the cutting tool 9 to move a set distance towards the motor shaft. At the same time, the tool holder 8 also drives the mounting plate to move, the mounting plate drives the base frame 10 to move, the base frame 10 drives the movable frame 11 to move, and the movable frame 11 drives the chip breaker needle 13 to move, so that the chip breaker needle 13 moves synchronously with the cutting tool 9; After the cutting tool 9 contacts the rotating motor shaft, it performs cutting processing on it. The strip-shaped chips generated by the processing accumulate in the gap between the chip breaker needle 13 and the outer wall of the motor shaft. The accumulated strip-shaped chips contact the tip of the chip breaker needle 13 and gradually push the chip breaker needle 13, so that the chip breaker needle 13 moves towards the mounting plate. The chip breaker needle 13 drives the movable frame 11 to move. The movable frame 11 moves smoothly under the guidance of the base frame 10. After the movable frame 11 moves, it squeezes the set of disc springs 12. The elastic force generated after the set of disc springs 12 is compressed. At the same time, the movable frame 11 also drives the travel limit plate 14 to move. During the process of the set of disc springs 12 being squeezed, the distance between the travel limit plate 14 and the mounting plate gradually decreases. When the travel limit plate 14 contacts the mounting plate, the set of disc springs 12 cannot be further squeezed. At this time, the elastic force generated by the set of disc springs 12 reaches the maximum value, and the travel limit plate 14 limits the movement distance of the movable frame 11 to avoid excessive squeezing of the set of disc springs 12; As the strip cutting continuously presses against the chip breaker needle 13, the elastic force generated by the disc spring group 12 gradually increases, and the extrusion force at the extrusion point between the chip breaker needle 13 and the strip cutting gradually increases, causing the strip cutting to break. As a result, the strip cutting will not wrap around the cutting tool 9 and will not affect the machining of the motor shaft by the cutting tool 9. After the strip cutting breaks, the thrust applied to the chip breaker needle 13 disappears, and the elastic force generated by the disc spring group 12 drives the movable frame 11 to move back to its original position. The movable frame 11 drives the chip breaker needle 13 to move back to its original position for the next chip breaking operation; During the cutting process of the cutting tool 9 on the motor shaft, the strip chips continuously press against the chip breaker needle 13. The chip breaker needle 13 generates an elastic force by extruding the disc spring group 12. The elastic force generated by the disc spring group 12 causes the tip of the chip breaker needle 13 to squeeze the strip chips, causing the strip chips to break. After the strip chips break, the chip breaker needle 13 moves back to its original position under the elastic force of the disc spring group 12. The chip breaker needle 13 repeatedly squeezes the strip chips under the elastic force generated by the disc spring group 12, causing the strip chips generated during the machining process to break, thus preventing the strip chips from wrapping around the cutting tool 9 and not affecting the machining of the motor shaft by the cutting tool 9. The disc spring group 12 is used to elastically support the chip breaker needle 13. The disc spring group 12 has strong anti-fatigue ability and is not prone to fatigue failure under continuous extrusion for a long time. Moreover, the stroke limiting plate 14 limits the moving distance of the chip breaker needle 13. When the stroke limiting plate 14 contacts the mounting plate, the disc spring group 12 cannot be further extruded, preventing excessive extrusion of the disc spring group 12 and enabling the disc spring group 12 to maintain its elasticity and not undergo fatigue failure, thereby maintaining the chip breaking effect of the chip breaker needle 13.
[0019] Embodiment 2: When the chip breaker needle 13 breaks the strip chips, the force applied by the chip breaker needle 13 causes the chips to obtain a certain initial velocity when breaking. Some chips with a certain velocity eject towards the motor shaft direction, resulting in the chips scratching the machined surface of the motor shaft, thereby reducing the cutting effect. Refer to Figure 4 and Figure 6, as another preferred embodiment of the present invention, the difference from Embodiment 1 is that a steering mechanism 15 for preventing broken chips from scratching the machined surface of the motor shaft is connected to the guide frame 7. The steering mechanism 15 includes an open box 151, the open box 151 is fixedly connected to the guide frame 7, a maintenance plate 152 is connected to the open box 151, a filter plate 153 is connected inside the open box 151, the filter plate 153 is a hydrophobic material plate, a negative pressure chamber is provided between the filter plate 153 and the open box 151, the upper end of the negative pressure chamber communicates with a metal suction pipe 155, one end of the metal suction pipe 155 passes through the tool holder 8 and communicates with a suction nozzle 156, the suction nozzle 156 is located above the chip breaker needle 13, and the suction nozzle 156 is inclined downward towards the cutting tool 9. A negative pressure fan 154 for generating negative pressure in the negative pressure chamber is connected inside the open box 151. A pressure detector 158 for detecting the pressure in the negative pressure chamber is connected to the maintenance plate 152. An open box 157 is provided at the bottom end of the negative pressure chamber. A groove frame 159 is fixedly connected to the support frame 4, and a moisture absorption pad 1510 is connected to the groove frame 159. The moisture absorption pad 1510 faces the open end of the open box 151.
[0020] Working principle: When the cutting tool 9 performs cutting processing on the motor shaft, the negative pressure fan 154 starts. After the negative pressure fan 154 starts, it sucks the gas in the negative pressure chamber, causing negative pressure to be generated in the negative pressure chamber. The pressure detector 158 detects the pressure in the negative pressure chamber. The metal suction pipe 155 communicates with the negative pressure chamber, and the suction nozzle 156 communicates with the metal suction pipe 155. Therefore, after the negative pressure fan 154 starts, a negative pressure suction force is generated on the suction nozzle 156. When the chip breaker needle 13 cuts the strip-shaped chips, the suction nozzle 156 sucks the flying chips, causing the flying chips to move towards the suction nozzle 156, thus effectively preventing the chips from splashing and scratching the machined surface of the motor shaft; The chips sucked by the suction nozzle 156 are introduced into the negative pressure chamber through the metal suction pipe 155. The filter plate 153 filters the chips. Since the filter plate 153 is a hydrophobic material plate, the gas can pass through the filter plate 153, while the chips and droplets cannot pass through. Thus, the chips in the gas are filtered out. The filtered chips are collected by the open box 157, and the filtered gas is released from the open mouth of the open box 151. The released gas contacts the moisture absorption pad 1510, and the moisture absorption pad 1510 dries the gas and reduces the humidity of the gas; When the pressure detector 158 detects that the pressure in the negative pressure chamber is too small, the maintenance plate 152 is removed, the open box 157 and the filter plate 153 are taken out, and the filter plate 153 is cleaned to separate the chips from the filter plate 153 and maintain the air permeability of the filter plate 153.
[0021] Embodiment 3: When the nozzle 156 sucks up the splashed debris, since the nozzle 156 is relatively close to the processing area, a part of the cutting fluid will be sucked up when sucking the debris. After part of the cutting fluid condenses, it has a strong viscosity, resulting in the cutting fluid and debris mixing and entering the inside of the metal straw 155. After cooling, the cutting fluid is likely to adhere to the inner wall of the metal straw 155, causing the internal channel of the metal straw 155 to be blocked, thereby affecting the metal straw 155 to suck up debris through the nozzle 156. Refer to Figures 6-8 , as another preferred embodiment of the present invention, different from Embodiment 2, a softening mechanism 16 for preventing the metal straw 155 from being blocked is connected to the upper end of the open box 151. The softening mechanism 16 includes a heating wire 161, and the heating wire 161 is wound around the outer wall of the metal straw 155. A sealing pipe 162 is fixedly connected to the upper end of the open box 151, the heating wire 161 is located in the sealing pipe 162, one end of the sealing pipe 162 is connected with an end cover 163, a heat preservation layer 164 is connected in the sealing pipe 162, a Teflon coating is provided on the inner part of the metal straw 155, and a spiral diversion groove 165 is formed on the inner part of the metal straw 155.
[0022] Working principle: One end of the sealing pipe 162 is sealed by the open box 151, and the other end of the sealing pipe 162 is sealed by the end cover 163. After the heating wire 161 is powered on, it heats up the metal straw 155. The heat preservation layer 164 keeps the sealing pipe 162 warm, reducing the release of heat from the sealing pipe 162. After the metal straw 155 is heated up, the temperature of its inner wall rises. After the cutting fluid and debris enter the metal straw 155, the cutting fluid contacts the heated inner wall of the metal straw 155 and then heats up, heating and softening the cutting fluid, thereby reducing the viscosity of the cutting fluid, so that the cutting fluid and debris will not adhere to the inner wall of the metal straw 155 during the movement in the metal straw 155, and will not cause the metal straw 155 to be blocked, thus not affecting the air suction effect of the metal straw 155, and further not affecting the nozzle 156 to suck up debris; At the same time, a Teflon coating is provided on the inner wall of the metal straw 155, and the Teflon coating enhances the wear resistance of the inner wall of the metal straw 155. And a spiral diversion groove 165 is provided on the inner wall, and the spiral diversion groove 165 makes the debris and the inner wall of the metal straw 155 have rolling friction, reducing the resistance, and the spiral diversion groove 165 makes the debris rotate forward under the action of the spiral force, avoiding lateral accumulation.
[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A production and processing device for a motor shaft, comprising a frame (1), a support frame (4) is slidably connected to the frame (1), a guide frame (7) is slidably connected to the support frame (4), and a tool holder (8) is connected to the upper end of the guide frame (7), characterized in that, Wherein: A cutting tool (9) is connected to the tool rest (8). An installation plate is fixedly connected to the upper end of the tool rest (8). A base frame (10) is fixedly connected to the installation plate. A movable frame (11) is slidably connected to the base frame (10). A set of disc springs (12) is connected between the base frame (10) and the movable frame (11). A chip breaker needle (13) is fixedly connected to one end of the movable frame (11). The chip breaker needle (13) is located above the cutting tool (9) and is inclined downward toward the cutting tool (9). A travel limit plate (14) is fixedly connected to the movable frame (11). There is a spacing between one end of the travel limit plate (14) and the installation plate.
2. The motor shaft production and processing device according to claim 1, characterized in that, A turning mechanism (15) for preventing broken chips from scratching the machined surface of the motor shaft is connected to the guiding frame (7). The turning mechanism (15) includes an open box (151). The open box (151) is fixedly connected to the guiding frame (7). An inspection plate (152) is connected to the open box (151). A filter plate (153) is connected inside the open box (151). A negative pressure chamber is provided between the filter plate (153) and the open box (151). The upper end of the negative pressure chamber communicates with a metal suction pipe (155). One end of the metal suction pipe (155) passes through the tool rest (8) and is connected to a suction nozzle (156). A negative pressure fan (154) for generating negative pressure in the negative pressure chamber is connected inside the open box (151).
3. The motor shaft production and processing device according to claim 2, characterized in that, The suction nozzle (156) is located above the chip breaker needle (13) and is inclined downward toward the cutting tool (9).
4. The motor shaft production and processing device according to claim 2, wherein, A pressure detector (158) for detecting the pressure in the negative pressure chamber is connected to the inspection plate (152). An open box (157) is provided at the bottom end of the negative pressure chamber.
5. The motor shaft production and processing device according to claim 4, characterized in that, A groove frame (159) is fixedly connected to the support frame (4). A moisture absorption pad (1510) is connected to the groove frame (159). The moisture absorption pad (1510) faces the open end of the open box (151).
6. The motor shaft production and processing device according to claim 5, characterized in that, A softening mechanism (16) for preventing the metal suction pipe (155) from being blocked is connected to the upper end of the open box (151). The softening mechanism (16) includes a heating wire (161). The heating wire (161) is wound around the outer wall of the metal suction pipe (155). A sealing pipe (162) is fixedly connected to the upper end of the open box (151). The heating wire (161) is located inside the sealing pipe (162). One end of the sealing pipe (162) is connected to an end cover (163). A heat insulation layer (164) is connected inside the sealing pipe (162).
7. The motor shaft production and processing device according to claim 6, characterized in that, A Teflon coating is provided on the inner part of the metal suction pipe (155). A spiral diversion groove (165) is formed on the inner part of the metal suction pipe (155).