A cutting device for machining gearbox shafts with a fixed structure

Abstract

This invention relates to the field of shaft cutting technology, and more particularly to a cutting device for processing gearbox shafts with a fixed structure. It includes: a cutting bed; a sliding frame disposed on the cutting bed, with a slider inside the sliding frame and a tool holder mounted on the slider; a power frame disposed on the sliding frame; a first fixture disposed on the cutting bed; a second fixture disposed on the first fixture, the second fixture including a measuring push rod, the telescopic end of which is provided with a positioning block; and a connector disposed on the slider. This invention uses the first and second fixtures to fix the raw material, improving stability during the cutting process. Then, the connector detects the resistance experienced by the circular saw blade. When the circular saw blade experiences significant resistance and becomes jammed, the power transmission between it and the power frame is cut off, preventing excessive load on the power frame and damage, which would affect the normal operation of the device.

Description

Technical Field

[0001] This invention relates to the field of shaft cutting technology, and more particularly to a cutting device for processing gearbox shafts with a fixed structure. Background Technology

[0002] A gearbox shaft (hereinafter referred to as a shaft) is an automotive component used for connecting and transmitting power. Currently, the manufacturing process of shafts involves: first, cutting raw materials of appropriate diameter to the required length; then, sequentially performing turning, milling, drilling, gear shaving, heat treatment, and grinding processes to complete production. In most cases, a circular saw is used to cut the shaft material. During cutting, a push rod drives the circular saw blade to move and cut the raw material. As the circular saw blade's usage time increases, its wear gradually intensifies, leading to a decrease in cutting efficiency. However, existing devices cannot detect the wear of the circular saw blade during use. Even when the circular saw blade is severely worn, it is still used to cut raw materials. This causes increased resistance when the severely worn circular saw blade continues to cut raw materials, and the blade cannot effectively cut the material, resulting in the circular saw blade getting stuck. This increases the load on the motor and damages it, affecting the normal operation of the equipment. Summary of the Invention

[0003] This invention provides a cutting device for processing gearbox shafts with a fixed structure, which addresses the shortcomings of existing devices that easily increase the load on the motor and cause damage when the circular saw blade gets stuck.

[0004] The technical solution of the present invention is: a cutting device for processing gearbox shafts with a fixed structure, comprising: a cutting bed; a sliding frame disposed on the cutting bed, the sliding frame being used to drive a circular saw blade to move, a slider disposed inside the sliding frame, and a tool holder disposed on the slider; a power frame disposed on the sliding frame, used to drive the circular saw blade to rotate; a first fixture disposed on the cutting bed; a second fixture disposed on the first fixture, the second fixture including a measuring push rod, the telescopic end of the measuring push rod being provided with a positioning block, the first fixture and the second fixture jointly used to fix the shaft; and a connector disposed on the slider, the connector being used to cut off the power transmission between the circular saw blade and the power frame when the circular saw blade is jammed.

[0005] Preferably, the connector includes: a rotating shaft rotatably connected to the sliding frame, the rotating shaft being driven by the power frame via a belt and pulley, the rotating shaft being splined to a sliding shaft, the rotating shaft having a sliding cavity, the sliding shaft sliding within the sliding cavity, the sliding shaft being slidably connected to a rotating sleeve, the rotating sleeve being rotatably connected to the slider; a detection rod rotatably connected to the rotating sleeve, a spring being provided between the detection rod and the sliding shaft, a limiting post being fixedly attached to the detection rod, the rotating sleeve having a through hole, the detection rod being limitedly fitted with the through hole, a connecting sleeve rotatably connected to the slider, the connecting sleeve having a curved groove, a protrusion being fixedly attached to the end of the detection rod away from the rotating sleeve, the protrusion of the detection rod being pressed into the curved groove of the connecting sleeve, the connecting sleeve being fixedly connected to a circular saw blade; and a limiting plate fixedly attached to the detection rod, the limiting plate being rotatably connected to the slider, a torsion spring being provided between the limiting plate and the slider, the limiting plate being located between the rotating sleeve and the connecting sleeve.

[0006] Preferably, the length of the limiting post is less than the length of the inner curved groove of the connecting sleeve in the horizontal direction.

[0007] Preferably, the device further includes: a U-shaped frame slidably connected within the slider, a spring provided between the U-shaped frame and the slider, the slider engaging with the limiting plate to restrict unidirectional movement of the limiting plate; and a measuring component disposed on the measuring push rod to adjust the resistance encountered by the detection rod during movement.

[0008] Preferably, the U-shaped frame has an inclined surface on the side near the central axis of the rotating sleeve, and the inclined surface is located on the side away from the rotating axis.

[0009] Preferably, the measuring component includes: a guide plate disposed on the measuring push rod, the guide plate being slidably connected to the positioning block; a hydraulic pipe slidably connected to the telescopic end of the measuring push rod, the hydraulic pipe communicating with the sliding cavity of the rotating shaft through a hose; and a positioning plate fixedly connected to the hydraulic pipe, the positioning plate being slidably connected to the guide plate and the positioning block.

[0010] Preferably, the device further includes: an extrusion plate slidably connected to the sliding shaft, with damping provided between the extrusion plate and the sliding shaft, and the extrusion plate located between the rotating shaft and the rotating sleeve, the extrusion plate being slidably connected to the slider, and the rotating shaft, the rotating sleeve, and the U-shaped frame all being extruded and engaged with the extrusion plate.

[0011] Preferably, the minimum distance between the U-shaped frame and the rotation axis in the horizontal direction is less than the thickness of the extrusion plate, so that the U-shaped frame is always in contact with the periphery of the extrusion plate.

[0012] Preferably, the system further includes: an L-shaped plate slidably connected to the positioning plate, the positioning plate having a groove in which the L-shaped plate slides, a tension spring between the L-shaped plate and the positioning plate, the L-shaped plate being pressed against the positioning block, and the guide plate having multiple limiting grooves in which the L-shaped plate is limited to the limiting grooves of the guide plate.

[0013] Preferably, the thickness of the horizontal portion of the L-shaped plate is less than the height of the inner groove of the positioning plate, and the difference between the thickness of the horizontal portion of the L-shaped plate and the inner groove of the positioning plate is the same as the thickness of the inner limiting groove of the guide plate, so as to make the horizontal portion of the L-shaped plate fit with the inner limiting groove of the guide plate.

[0014] The present invention has the following advantages: 1. The present invention fixes the raw material by the first fixer and the second fixer, thereby improving the stability during the cutting process. Then, the resistance of the circular saw blade is detected by the connector. When the circular saw blade is jammed due to large resistance, the power transmission between it and the power frame is cut off to avoid the power frame being damaged due to excessive load, which would affect the normal use of the device.

[0015] 2. In this invention, after the limiting post and the through hole of the rotating sleeve are separated, the limiting plate is fixed by the U-shaped frame, so that the detection rod cannot move forward. This prevents the detection rod from driving the limiting post to move into the through hole of the rotating sleeve and driving the circular saw blade to rotate again, causing the circular saw blade to continuously hit the device and aggravate the damage to the device.

[0016] 3. In this invention, when measuring the diameter of the raw material, the resistance of the detection rod when it moves backward is adjusted by adjusting the compression distance of the spring inside the rotating sleeve. This ensures that the maximum resistance experienced by the circular saw blade when cutting the raw material matches the diameter of the raw material, thus preventing the circular saw blade from failing to cut the raw material when cutting a large-diameter material due to insufficient resistance during the movement of the detection rod. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the sliding frame, the power frame, and the first fixture of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the power frame, the first fixture, and the second fixture of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the sliding frame, power frame, and connector of the present invention;

[0021] Figure 5This is a three-dimensional structural diagram of the measuring push rod, guide plate, and hydraulic pipe of the present invention;

[0022] Figure 6 This is a three-dimensional structural diagram of the rotating shaft, rotating sleeve, and detection rod of the present invention;

[0023] Figure 7 This is a three-dimensional structural diagram of the rotating sleeve, detection rod, and connecting sleeve of the present invention;

[0024] Figure 8 This is a three-dimensional structural diagram of the limiting plate, U-shaped frame, and extrusion plate of the present invention;

[0025] Figure 9 This is an exploded three-dimensional view of the detection rod and connecting sleeve of the present invention;

[0026] Figure 10 This is a three-dimensional structural diagram of the hydraulic pipe, positioning plate, and positioning block of the present invention;

[0027] Figure 11 This is a three-dimensional structural diagram of the positioning plate, positioning block, and L-shaped plate of the present invention.

[0028] The meanings of the reference numerals in the figure are as follows: 1-cutting bed, 2-sliding frame, 201-slider, 3-power frame, 4-first fixture, 41-cutting table, 42-telescopic block, 43-baffle, 5-second fixture, 51-measuring push rod, 52-positioning block, 6-connector, 7-rotating shaft, 8-sliding shaft, 9-rotating sleeve, 10-detection rod, 11-connecting sleeve, 101-limiting post, 12-limiting plate, 13-U-shaped frame, 14-extrusion plate, 16-guide plate, 17-hydraulic pipe, 18-positioning plate, 20-L-shaped plate. Detailed Implementation

[0029] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. Location descriptions selected in the specification, such as "above," "below," etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0030] A cutting device for machining gearbox shafts with a fixed structure, such as Figures 1-5As shown, it includes: a cutting bed 1; a sliding frame 2, mounted on the cutting bed 1, the sliding frame 2 being used to drive the circular saw blade to move, the sliding frame 2 having a slider 201 inside, the slider 201 having a blade holder; a power frame 3, mounted on the sliding frame 2, used to drive the circular saw blade to rotate; a first fixture 4, mounted on the cutting bed 1; a second fixture 5, mounted on the first fixture 4, the second fixture 5 including a measuring push rod 51, the telescopic end of the measuring push rod 51 having a positioning block 52, the first fixture 4 and the second fixture 5 together being used to fix the shaft; and a connector 6, mounted on the slider 201, the connector 6 being used to cut off the power transmission between the circular saw blade and the power frame 3 when the circular saw blade is jammed.

[0031] The above solution aims to address the problem in existing devices where increased motor load and potential damage occur when the circular saw blade gets stuck. The cutting bed 1 is equipped with an isolation shell to block flying debris during cutting. A sliding frame 2 is housed within the isolation shell of the cutting bed 1. The sliding frame 2 consists of an electric push rod and a guide rail. The guide rail guides the movement of the slider 201, and the electric push rod provides power to move the slider 201, causing it to bring the circular saw blade closer to the raw material. A blade holder is located on the front side of the slider 201, and the circular saw blade is rotatably connected within the blade holder. The power frame 3 consists of a motor and a connecting frame. A first fixing device 4 is located on the cutting bed 1 and includes a cutting table 41, a telescopic block 42, and a baffle 43. The cutting table 41 provides support during raw material cutting. At the bottom of the raw material, the telescopic block 42 extends when the raw material is fixed, so that the telescopic block 42 cooperates with the baffle 43 to fix and clamp the raw material. The second fixture 5 is used to move the positioning block 52 downward through the measuring push rod 51 during the process of fixing the raw material, thereby fixing the upper side of the raw material. The connector 6 is located inside the slider 201 and between the circular saw blade and the power frame 3. The connector 6 and the power frame 3 are connected by a pulley and belt drive. The connector 6 is used to transmit power to the circular saw blade and cut off the power transmission between the circular saw blade and the power frame 3 when the circular saw blade is stuck. This prevents the power frame 3 from continuing to drive the circular saw blade to rotate after the circular saw blade is stuck, while the circular saw blade cannot move, which would increase the load on the motor in the power frame 3 and damage it, affecting the subsequent normal use of the device.

[0032] Workflow: After the raw material is placed on the cutting bed 1, the first fixing device 4 is activated to fix the raw material, preventing it from moving left or right. At the same time, the second fixing device 5 is activated, causing the telescopic end of the measuring push rod 51 to move the positioning block 52 downward to press down on the raw material, completing the fixing in four directions. During this process, the power frame 3 drives the circular saw blade to rotate through the connector 6. Then, the sliding frame 2 drives the circular saw blade to approach the raw material through the slider 201 to complete the cutting of the raw material. When the resistance of the circular saw blade is too great, the connector 6 cuts off the power transmission between the circular saw blade and the power frame 3, causing the output shaft of the motor in the power frame 3 to idle, thereby reducing the load on the power frame 3. Afterward, the operator controls the sliding frame 2, telescopic block 42 and positioning block 52 to reset. After the above three parts are reset, the operator cuts off the power and replaces the circular saw blade.

[0033] like Figures 7-9 As shown, connector 6 includes: a rotating shaft 7, rotatably connected to the sliding frame 2, the rotating shaft 7 and the power frame 3 are driven by a belt and pulley, the rotating shaft 7 is splined connected to the sliding shaft 8, the rotating shaft 7 is provided with a sliding cavity, the sliding shaft 8 slides within the sliding cavity, the sliding shaft 8 is slidably connected to the rotating sleeve 9, the rotating sleeve 9 is rotatably connected to the slider 201; a detection rod 10, rotatably connected to the rotating sleeve 9, a spring is provided between the detection rod 10 and the sliding shaft 8, a limit post 101 is fixedly connected to the detection rod 10, and the rotating sleeve 9 is provided with a passage... The detection rod 10 is limited to the through hole. A connecting sleeve 11 is rotatably connected to the slider 201. A curved groove is provided inside the connecting sleeve 11. A protrusion is fixed to the end of the detection rod 10 away from the rotating sleeve 9. The protrusion of the detection rod 10 is pressed and engaged with the curved groove of the connecting sleeve 11. The connecting sleeve 11 is fixed to the circular saw blade. A limiting plate 12 is fixed to the detection rod 10. The limiting plate 12 is rotatably connected to the slider 201. A torsion spring is provided between the limiting plate 12 and the slider 201. The limiting plate 12 is located between the rotating sleeve 9 and the connecting sleeve 11.

[0034] like Figure 8 and Figure 9 As shown, the length of the limiting post 101 is less than the length of the inner curved groove of the connecting sleeve 11 in the horizontal direction.

[0035] In the above scheme, the power transmission between the circular saw blade and the power frame 3 is used for rapid cutting; the rear end of the sliding shaft 8 is located in the sliding cavity of the rotating shaft 7, and the left side of the sliding shaft 8 is splinedly connected to the rotating shaft 7 to discharge the gas in the front side of the sliding cavity of the rotating shaft 7; the spring in the rotating sleeve 9 is used to adjust the resistance when the detection rod 10 moves backward; the limiting post 101 is located in the rotating sleeve 9, and when the rotating sleeve 9 rotates, the rotating sleeve 9 squeezes the limiting post 101 through the through hole on it, thereby driving the detection rod 10 to rotate synchronously. The front side of the limiting post 101 is a hemispherical surface, which is used to reduce the distance between the limiting post 101 and the detection rod 10 during the process of entering the through hole in the detection rod 10. Wear between them; the connecting sleeve 11 is used to, during the process of driving the circular saw blade to rotate, when the circular saw blade jams, the connecting sleeve 11 presses the protrusion of the detection rod 10 through the curved groove on it, so that the protrusion drives the detection rod 10 to rotate relative to the connecting sleeve 11 and move backward. The detection rod 10 moves backward and compresses the adjacent spring, so that the limiting post 101 moves backward relative to the rotating sleeve 9 and separates from the through hole on the rotating sleeve 9, thereby disconnecting the power transmission between the circular saw blade and the power frame 3. The length of the curved groove inside the connecting sleeve 11 is used to ensure that the limiting post 101 separates from the through hole on the detection rod 10 after the relative movement of the detection rod 10 and the connecting sleeve 11 reaches the maximum distance.

[0036] like Figure 7 and Figure 8 As shown, it also includes: a U-shaped frame 13, which is slidably connected to the slider 201, and a spring is provided between the U-shaped frame 13 and the slider 201. The slider 201 is in a limiting fit with the limiting plate 12 to limit the unidirectional movement of the limiting plate 12; and a measuring component, which is set on the measuring push rod 51 to adjust the resistance encountered by the detection rod 10 when it moves.

[0037] like Figure 7 and Figure 8 As shown, the U-shaped frame 13 has an inclined surface on the side near the central axis of the rotating sleeve 9, and the inclined surface is located on the side away from the rotating shaft 7.

[0038] In the above scheme, the U-shaped frame 13 is used to fix the position of the detection rod 10 after the limiting post 101 separates from the through hole of the rotating sleeve 9, preventing the detection rod 10 from moving repeatedly. The U-shaped frame 13 is used to fix the limiting plate 12 after it moves to the position between the rotating sleeve 9 and the front vertical rod of the U-shaped frame 13, preventing the limiting plate 12 from moving forward. This avoids the situation where, after the limiting post 101 separates from the through hole of the rotating sleeve 9, the limiting plate 12 rotates in the opposite direction under the action of the torsion spring, and after the limiting post 101 and the through hole of the rotating sleeve 9 are aligned again, the detection rod 10 moves forward again under the push of the adjacent spring, causing the detection rod 10 to repeat the above process and move backward again, resulting in the circular saw blade repeatedly hitting the raw material, exacerbating the damage to the equipment. The degree of damage to the device is determined by the inclined surface of the U-shaped frame 13 facing the limiting plate 12. When the limiting plate 12 moves backward, it causes the limiting plate 12 to push the U-shaped frame 13 to move by pressing the adjacent inclined surface on the U-shaped frame 13. After the limiting post 101 separates from the through hole of the detection rod 10, the limiting plate 12 separates from the adjacent inclined surface of the U-shaped frame 13, the U-shaped frame 13 moves in the opposite direction to reset, and the vertical rod on the front side of the U-shaped frame 13 blocks the limiting plate 12, so that the limiting plate 12 cannot move forward. The measuring component is used to measure the diameter of the raw material and push the sliding shaft 8 to move, so that the sliding shaft 8 compresses the spring between the sliding shaft 8 and the detection rod 10, thereby adjusting the resistance encountered by the detection rod 10 when it moves backward.

[0039] like Figure 5 , Figure 10 and Figure 11 As shown, the measuring assembly includes: a guide plate 16, which is mounted on the measuring push rod 51 and is slidably connected to the positioning block 52; a hydraulic pipe 17, which is slidably connected to the telescopic end of the measuring push rod 51 and is connected to the sliding cavity of the rotating shaft 7 through a hose; and a positioning plate 18, which is fixed to the hydraulic pipe 17 and is slidably connected to the guide plate 16 and the positioning block 52.

[0040] In the above scheme, the diameter of the raw material is used to adjust the compression degree of the spring in the rotating sleeve 9 so that the resistance encountered by the measuring rod 10 when it moves backward matches the diameter of the raw material. The measuring push rod 51 has a mounting bracket, and the guide plate 16 is located on the mounting bracket on the measuring push rod 51 to guide the movement of the positioning block 52. The hydraulic pipe 17 is filled with hydraulic oil. After the positioning block 52 contacts the raw material, the telescopic end of the measuring push rod 51 squeezes the hydraulic oil in the hydraulic pipe 17, so that the hydraulic oil in the hydraulic pipe 17 enters the sliding cavity of the rotating shaft 7, thereby pushing the connecting sliding shaft 8 to move and compress the adjacent spring, thereby adjusting the resistance encountered by the measuring rod 10 when compressing the adjacent spring. The positioning plate 18 is located on the lower side of the hydraulic pipe 17. The lower side of the positioning block 52 is a plane, which is used to determine the upper edge of the shaft, thereby determining the diameter of the shaft.

[0041] like Figure 7 and Figure 8As shown, it also includes: a pressing plate 14, which is slidably connected to the sliding shaft 8. A damping is provided between the pressing plate 14 and the sliding shaft 8. The pressing plate 14 is located between the rotating shaft 7 and the rotating sleeve 9. The pressing plate 14 is slidably connected to the slider 201. The rotating shaft 7, the rotating sleeve 9 and the U-shaped frame 13 are all pressed together with the pressing plate 14.

[0042] like Figure 7 and Figure 8 As shown, the minimum distance between the U-shaped frame 13 and the rotating shaft 7 in the horizontal direction is less than the thickness of the extrusion plate 14, so that the U-shaped frame 13 is always in contact with the periphery of the extrusion plate 14.

[0043] In the above scheme, after the circular saw blade is separated from the raw material, the U-shaped frame 13 releases its fixation on the limiting plate 12. After the hydraulic oil in the hydraulic pipe 17 enters the sliding cavity of the rotating shaft 7, the hydraulic oil in the sliding cavity of the rotating shaft 7 pushes the sliding shaft 8 to move backward, which drives the extrusion plate 14 to move synchronously and extrude the inclined surface of the rear vertical rod of the U-shaped frame 13. This causes the U-shaped frame 13 to move upward and release its fixation on the limiting plate 12, allowing the detection rod 10 to move forward and reset under the push of the adjacent spring. The rotating shaft 7 and the rotating sleeve 9 are both used to control the extrusion. The distance the plate 14 moves is controlled by the rotating shaft 7, which restricts the backward movement of the extrusion plate 14 after it comes into contact with the rotating shaft 7 during the process of the sliding shaft 8 driving the extrusion plate 14 to move backward. The rotating sleeve 9 restricts the forward movement of the extrusion plate 14 after it comes into contact with the extrusion plate 14. The thickness of the extrusion plate 14 is used to prevent it from moving too far backward. If it moves between the U-shaped frame 13 and the rotating shaft 7, the extrusion plate 14 will separate from the inclined surface of the U-shaped frame 13, making it impossible for the extrusion plate 14 to push the U-shaped frame 13 to move upward.

[0044] Workflow: During the measurement of the raw material diameter by the second fixture 5, after the positioning block 52 contacts the upper side of the raw material and stops moving, the telescopic end of the measuring push rod 51 squeezes the hydraulic oil in the hydraulic pipe 17, causing the sliding shaft 8 to move forward and compress the adjacent spring, thereby increasing the resistance when the detection rod 10 moves backward. This continues until the telescopic end of the measuring push rod 51 is fully extended, at which point the sliding shaft 8 stops moving. During the rotation of the circular saw blade, when the circular saw blade is jammed, the resistance of the detection rod 10 driving the connecting sleeve 11 to rotate increases, causing the detection rod 10 to move backward and compress the adjacent spring. The limiting plate 12 presses upward against the U-shaped frame 13, and the U-shaped frame 13 moves upward and compresses the adjacent spring. The adjacent spring, until the limiting post 101 separates from the through hole of the rotating sleeve 9, the limiting plate 12 separates from the adjacent inclined surface on the U-shaped frame 13. The U-shaped frame 13 moves downward under the push of the spring to fix the limiting plate 12, so that the detection rod 10 cannot move forward. Then the operator turns off the power of the power frame 3 and resets the sliding frame 2, telescopic block 42 and positioning block 52. During this process, the hydraulic pipe 17 draws hydraulic oil from the sliding cavity of the rotating shaft 7, so that the sliding shaft 8 drives the pressing plate 14 to move backward and presses the U-shaped frame 13 to move upward, so that the U-shaped frame 13 releases the limitation of the limiting plate 12, and the detection rod 10 moves forward to reset. Then the operator replaces the circular saw blade.

[0045] like Figure 11 As shown, it also includes: an L-shaped plate 20, which is slidably connected to the positioning plate 18. The positioning plate 18 is provided with a sliding groove, and the L-shaped plate 20 slides within the sliding groove. A tension spring is provided between the L-shaped plate 20 and the positioning plate 18. The L-shaped plate 20 is pressed and engaged with the positioning block 52. The guide plate 16 is provided with multiple limiting grooves, and the L-shaped plate 20 is limited and engaged with the limiting grooves of the guide plate 16.

[0046] In the above scheme, to prevent the circular saw blade from causing the positioning block 52 to shake when cutting the raw material, resulting in a continuous change in the amount of hydraulic oil compressed in the hydraulic pipe 17, the L-shaped plate 20 is located between the positioning plate 18 and the positioning block 52. After the positioning block 52 comes into contact with the raw material, it causes the positioning block 52 to move upward relative to the positioning plate 18, thereby causing the positioning block 52 to squeeze the L-shaped plate 20, causing the L-shaped plate 20 to move into the adjacent limiting groove of the guide plate 16 and stretch the adjacent tension spring, thereby limiting the positioning block 52 from pushing the positioning plate 18 upward, ensuring the stability of the position of the hydraulic pipe 17, thereby reducing the fluctuation of the resistance of the spring in the rotating sleeve 9 to the detection rod 10, and thus improving the stability of the device.

[0047] like Figure 11 As shown, the thickness of the horizontal portion of the L-shaped plate 20 is less than the height of the inner groove of the positioning plate 18, and the difference between the thickness of the horizontal portion of the L-shaped plate 20 and the inner groove of the positioning plate 18 is the same as the thickness of the inner limiting groove of the guide plate 16, which is used to limit the engagement between the horizontal portion of the L-shaped plate 20 and the inner limiting groove of the guide plate 16.

[0048] In the above scheme, to increase the fixing range of the L-shaped plate 20, when the positioning block 52 moves upward relative to the positioning plate 18, the positioning block 52 squeezes the L-shaped plate 20, so that the L-shaped plate 20 moves upward during the outward extension process until the upper side of the L-shaped plate 20 contacts the adjacent guide groove on the guide plate 16, and then the L-shaped plate 20 stops moving. After the L-shaped plate 20 extends to the maximum distance, the positioning block 52 stops moving.

[0049] Work process: The telescopic end of the measuring push rod 51 drives the hydraulic pipe 17 and its parts to move until the positioning block 52 comes into contact with the raw material. Then, the positioning plate 18 drives the parts on it to move downward relative to the positioning block 52, so that the positioning block 52 presses the L-shaped plate 20 and the L-shaped plate 20 enters the adjacent limiting groove to complete the limiting. After the positioning block 52 and the positioning plate 18 stop moving relative to each other, the L-shaped plate 20 completes the fixation of the positioning block 52, thereby preventing the positioning block 52 from moving during the cutting of the raw material.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A cutting device for machining a gearbox shaft with a fixed structure, characterized in that, Including: Cutting bed (1); A sliding frame (2) is provided on the cutting bed (1). The sliding frame (2) is used to drive the circular saw blade to move. A slider (201) is provided inside the sliding frame (2). A blade holder is provided in the slider (201). The power frame (3) is mounted on the sliding frame (2) and is used to drive the circular saw blade to rotate; The first fixture (4) is mounted on the cutting bed (1); The second fixture (5) is disposed on the first fixture (4). The second fixture (5) includes a measuring push rod (51). The telescopic end of the measuring push rod (51) is provided with a positioning block (52). The first fixture (4) and the second fixture (5) are used together to fix the shaft. A connector (6) is disposed on the slider (201). The connector (6) is used to cut off the power transmission between the circular saw blade and the power frame (3) when the circular saw blade is jammed. The connector (6) includes: A rotating shaft (7) is rotatably connected to the sliding frame (2). The rotating shaft (7) and the power frame (3) are driven by a belt and a pulley. The rotating shaft (7) is splined to a sliding shaft (8). The rotating shaft (7) is provided with a sliding cavity. The sliding shaft (8) slides in the sliding cavity. The sliding shaft (8) is slidably connected to a rotating sleeve (9). The rotating sleeve (9) is rotatably connected to the slider (201). The detection rod (10) is rotatably connected to the rotating sleeve (9). A spring is provided between the detection rod (10) and the sliding shaft (8). A limit post (101) is fixedly connected to the detection rod (10). The rotating sleeve (9) is provided with a through hole. The detection rod (10) is limited to the through hole. A connecting sleeve (11) is rotatably connected to the slider (201). A curved groove is provided inside the connecting sleeve (11). A protrusion is fixedly connected to one end of the detection rod (10) away from the rotating sleeve (9). The protrusion of the detection rod (10) is pressed into the curved groove of the connecting sleeve (11). The connecting sleeve (11) is fixedly connected to the circular saw blade. A limiting plate (12) is fixed to the detection rod (10). The limiting plate (12) is rotatably connected to the slider (201). A torsion spring is provided between the limiting plate (12) and the slider (201). The limiting plate (12) is located between the rotating sleeve (9) and the connecting sleeve (11). The length of the limiting post (101) is less than the length of the inner curved groove of the connecting sleeve (11) in the horizontal direction.

2. A cutting device for machining a gearbox shaft with a fixed structure according to claim 1, characterized in that, It also includes: The U-shaped frame (13) is slidably connected to the slider (201). A spring is provided between the U-shaped frame (13) and the slider (201). The slider (201) is in a limiting cooperation with the limiting plate (12) to limit the unidirectional movement of the limiting plate (12). A measuring component is mounted on the measuring push rod (51) and is used to adjust the resistance encountered when the detection rod (10) moves.

3. A cutting device for machining a gearbox shaft with a fixed structure according to claim 2, characterized in that: The U-shaped frame (13) has an inclined surface on the side near the central axis of the rotating sleeve (9), and the inclined surface is located on the side away from the rotating shaft (7).

4. A cutting device for machining a gearbox shaft with a fixed structure according to claim 3, characterized in that, The measurement components include: A guide plate (16) is disposed on the measuring push rod (51), and the guide plate (16) is slidably connected to the positioning block (52); The hydraulic pipe (17) is slidably connected to the telescopic end of the measuring push rod (51), and the hydraulic pipe (17) is connected to the sliding cavity of the rotating shaft (7) through a hose; The positioning plate (18) is fixed to the hydraulic pipe (17), the positioning plate (18) is slidably connected to the guide plate (16), and the positioning plate (18) is slidably connected to the positioning block (52).

5. A cutting device for machining a gearbox shaft with a fixed structure according to claim 4, characterized in that, It also includes: The extrusion plate (14) is slidably connected to the sliding shaft (8). Damping is provided between the extrusion plate (14) and the sliding shaft (8). The extrusion plate (14) is located between the rotating shaft (7) and the rotating sleeve (9). The extrusion plate (14) is slidably connected to the slider (201). The rotating shaft (7), the rotating sleeve (9) and the U-shaped frame (13) are all extruded and engaged with the extrusion plate (14).

6. A cutting device for machining a gearbox shaft with a fixed structure according to claim 5, characterized in that: The minimum distance between the U-shaped frame (13) and the rotating shaft (7) in the horizontal direction is less than the thickness of the extrusion plate (14), so that the U-shaped frame (13) is always in contact with the periphery of the extrusion plate (14).

7. A cutting device for machining a gearbox shaft with a fixed structure according to claim 6, characterized in that, It also includes: The L-shaped plate (20) is slidably connected to the positioning plate (18). The positioning plate (18) is provided with a sliding groove. The L-shaped plate (20) slides within the sliding groove. A tension spring is provided between the L-shaped plate (20) and the positioning plate (18). The L-shaped plate (20) is pressed and engaged with the positioning block (52). The guide plate (16) is provided with multiple limiting grooves. The L-shaped plate (20) is limited and engaged with the limiting grooves of the guide plate (16).

8. A cutting device for machining a gearbox shaft with a fixed structure according to claim 7, characterized in that: The thickness of the horizontal portion of the L-shaped plate (20) is less than the height of the inner groove of the positioning plate (18), and the difference between the thickness of the horizontal portion of the L-shaped plate (20) and the inner groove of the positioning plate (18) is the same as the thickness of the inner limiting groove of the guide plate (16), which is used to make the horizontal portion of the L-shaped plate (20) fit into the limiting groove of the guide plate (16).

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