Positioning mechanism for input crank arm machining

Abstract

The utility model discloses a kind of positioning mechanisms for input crank arm processing, including bottom plate, the upper surface middle part of bottom plate is equipped with processing table, further including positioning assembly;Positioning assembly: it includes locating plate one, locating inclined plate one, locating plate two and locating inclined plate two, locating plate one is transversely slidably connected in the left end of bottom plate, the right end of locating plate one is respectively rotatably connected with locating inclined plate one by pivot one, two locating inclined plate one is symmetrically arranged, locating plate two is respectively transversely slidably connected in the right end of bottom plate, the left end of two locating plate two is rotatably connected with locating inclined plate two by pivot two, the positioning mechanism for input crank arm processing can be adjusted according to the size of input crank arm, the angle of locating inclined plate, different V-shaped input crank arm of complete angle is positioned horizontally using locating inclined plate, improve the use range of input crank arm positioning mechanism, guarantee the accuracy of input crank arm processing position, improve the processing quality of input crank arm.

Description

Technical Field

[0001] This utility model relates to the field of input crank arm technology, specifically a positioning mechanism for processing input crank arms. Background Technology

[0002] The crank arm is a key component in a mechanical transmission system, primarily functioning to change the direction or angle of force transmission. Its applications span two major areas: industrial equipment and automotive steering. The input crank arm serves as the power output arm. During the machining of the input crank arm, a positioning mechanism is needed to ensure the accuracy of its machining position. In the prior art, patent publication number CN 221066063 U proposes a tooling fixture for machining crank arms with an adjustable function, including: a base; and a clamping mechanism, which is located at the top of the base to clamp crank arms of different sizes. The clamping mechanism includes a mounting frame fixedly connected to one side of the base, with a bidirectional lead screw rotatably connected to the inner wall of the mounting frame. A moving block is threaded onto the surface of the bidirectional lead screw. Although this mechanism can position crank arms of different sizes, the angle of the positioning clamp is fixed. When positioning V-shaped input crank arms with different bending angles, the angle of the positioning plate can easily lead to inaccurate positioning, affecting the accuracy of the input crank arm's machining position. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a positioning mechanism for input crank arm processing. The angle of the positioning inclined plate can be adjusted according to the size of the input crank arm. The positioning inclined plate is used to perform horizontal positioning of V-shaped input crank arms with different full angles, thereby improving the application range of the input crank arm positioning mechanism, ensuring the accuracy of the input crank arm processing position, and improving the processing quality of the input crank arm. This can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a positioning mechanism for processing an input crank arm, comprising a base plate, wherein a processing table is provided in the middle of the upper surface of the base plate, and a positioning component; Positioning Components: These include a first positioning plate, a first positioning ramp, a second positioning plate, and a second positioning ramp. The first positioning plate is laterally slidably connected to the left end of the base plate. The right end of the first positioning plate is rotatably connected to the first positioning ramp via a pivot shaft. The two first positioning ramps are symmetrical. The second positioning plate is laterally slidably connected to the right end of the base plate. The left end of the two second positioning plates is rotatably connected to the second positioning ramp via a pivot shaft. The angle of the positioning ramps can be adjusted according to the size of the input crank arm. The positioning ramps are used to horizontally position V-shaped input crank arms with different full angles, thereby increasing the application range of the input crank arm positioning mechanism, ensuring the accuracy of the input crank arm processing position, and improving the processing quality of the input crank arm.

[0005] Furthermore, it also includes a microcontroller, which is located on the left side of the base plate. The input terminal of the microcontroller is electrically connected to an external power supply to control the start and stop of the entire device.

[0006] Furthermore, the positioning assembly also includes a closing groove, a contact inclined plate, and a micro switch. The closing groove is respectively disposed on the side of the positioning inclined plate one and the positioning inclined plate two near the processing table. The upper and lower inner walls of the closing groove are rotatably connected to the contact inclined plate through a rotating shaft three. The inside of the closing groove is provided with a micro switch that is installed in conjunction with the contact inclined plate. The output end of the micro switch is electrically connected to the input end of the microcontroller to detect whether the positioning inclined plate is in contact with the workpiece surface.

[0007] Furthermore, the positioning assembly also includes torsion springs, which are movably sleeved on the outer arc surfaces of the contact inclined plate shafts. The lower ends of the torsion springs are fixedly connected to the adjacent contact inclined plates, and the first positioning inclined plate and the second positioning inclined plate are fixedly connected to the upper ends of the adjacent torsion springs, providing elastic limiting for the contact inclined plates.

[0008] Furthermore, the upper surface of the base plate is provided with support plates at both the left and right ends, and guide columns are provided between the support plates and the processing table. The left end of the positioning plate one and the right end of the positioning plate two are provided with sliding plates. The sliding plate on the left side is laterally connected between the outer arc surfaces of the two guide columns on the left side, and the sliding plate on the right side is slidably connected to the outer arc surfaces of the guide columns on the right side, providing guiding support for the movement of the positioning plate.

[0009] Furthermore, screws are rotatably connected between the support plate and the processing table, with each screw corresponding to a slide plate. The screw holes at the lower end of the slide plate are threadedly connected to the adjacent screws. Motor 1 is provided on the surface of the support plate, and the output shaft of motor 1 is fixedly connected to the adjacent screws. Corrugated pipes are provided between the slide plate and the support plate, and between the slide plate and the processing table. The corrugated pipes are movably sleeved on the outer arc surface of the screws. The input end of motor 1 is electrically connected to the output end of the microcontroller to provide power for the movement of the positioning plate.

[0010] Furthermore, both the interior of positioning plate one and positioning plate two are rotatably connected to worm gears. The outer arc surface of the first rotating shaft of positioning inclined plate one and the outer arc surface of the second rotating shaft of positioning inclined plate two are provided with worm wheels. The two worm wheels on the right side are respectively engaged with the adjacent worm gears, and the two worm wheels on the left side are respectively engaged with one worm gear. The surface of the sliding plate is provided with motor two. The output shaft of motor two is respectively fixedly connected to the adjacent worm gears. The input end of motor two is electrically connected to the output end of the microcontroller to provide power for the rotation of the positioning inclined plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This positioning mechanism for input crank arm processing has the following advantages: The angle of the positioning ramp can be adjusted according to the size of the input crank arm. The positioning ramp is used to horizontally position V-shaped input crank arms with different full angles, thereby increasing the application range of the input crank arm positioning mechanism, ensuring the accuracy of the input crank arm processing position, and improving the processing quality of the input crank arm. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the overall device of this utility model; Figure 3 This is a top view cross-sectional diagram of the contact inclined plate of this utility model; Figure 4 This is a top view cross-sectional diagram of the skateboard of this utility model.

[0013] In the diagram: 1. Base plate, 2. Machining table, 3. Positioning assembly, 31. Positioning plate one, 32. Positioning inclined plate one, 33. Positioning plate two, 34. Positioning inclined plate two, 35. Gathering groove, 36. Contact inclined plate, 37. Micro switch, 38. Torsion spring, 4. Slide plate, 5. Guide column, 6. Support plate, 7. Motor one, 8. Screw, 9. Motor two, 10. Worm gear, 11. Worm wheel, 12. Microcontroller, 13. Bellows. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This embodiment provides a technical solution: a positioning mechanism for processing an input crank arm, including a base plate 1, which provides support for the setting of the positioning component, a processing table 2 provided in the middle of the upper surface of the base plate 1, which provides support for the processing of the input crank arm, and also includes a microcontroller 12, which is located on the left side of the base plate 1. The input end of the microcontroller 12 is electrically connected to an external power supply to control the start and stop of the overall device, and also includes a positioning component 3; Positioning component 3 includes positioning plate 1 31, positioning ramp 1 32, positioning plate 2 33, and positioning ramp 2 34. Positioning plate 1 31 is laterally slidably connected to the left end of base plate 1. The right end of positioning plate 1 31 is rotatably connected to positioning ramp 1 32 via rotating shaft 1. The two positioning ramp 1 32 are symmetrical. Positioning plate 2 33 is laterally slidably connected to the right end of base plate 1. The left end of both positioning plate 2 33 is rotatably connected to positioning ramp 2 34 via rotating shaft 2. During the processing of the input crank arm, the V-shaped inner and outer angles of the input crank arm are pre-input into the microcontroller 12 according to the dimensions of the input crank arm. Then, based on the pre-input data, positioning ramp 1 32 and positioning ramp 2 34 rotate. The rotation amplitude of the two positioning ramp 1 32 is equal. Similarly, the angles of positioning inclined plates 32 and 34 are adjusted, and then positioning plates 31 and 33 move relative to each other. The positions stop when both positioning inclined plates 32 and 34 are in contact with the inclined surface of the input crank arm workpiece. With the cooperation of the two symmetrical positioning inclined plates 32, the front-to-back position of the V-shaped input crank arm workpiece is positioned. With the cooperation of positioning inclined plates 32 and 34, the left-to-right position of the V-shaped input crank arm workpiece is also positioned. The positioning assembly 3 also includes a closing groove 35, a contact inclined plate 36, and a micro switch 37. The closing groove 35 is respectively located on the sides of positioning inclined plates 32 and 34 near the processing table 2. The upper and lower inner walls of the closing groove 35 are rotatably connected to contact inclined plates via a rotating shaft 3. Both the plate 36 and the closing groove 35 are equipped with microswitches 37 that mate with the contact inclined plate 36. The output of the microswitch 37 is electrically connected to the input of the microcontroller 12. During the movement of the positioning plate 1 31 and the positioning plate 2 33, the contact inclined plate 36 first contacts the surface of the input crank arm workpiece. Under the pressure of the input crank arm workpiece, the contact inclined plate 36 rotates and gradually closes into the closing groove 35. When the contact inclined plate 36 is completely closed into the closing groove 35, the contact inclined plate 36 contacts the detection end of the microswitch 37. The microswitch 37 sends a signal to the microcontroller 12, and the microcontroller 12 controls the positioning plate 1 31 and the positioning plate 2 33 to stop moving. At this time, both the positioning inclined plate 1 32 and the positioning inclined plate 2 34 are in contact with the inclined surface of the input crank arm workpiece. The positioning assembly 3 also includes torsion springs 38, which are movably sleeved on the outer arc surfaces of the contact inclined plates 36. The lower ends of the torsion springs 38 are fixedly connected to the adjacent contact inclined plates 36. Positioning inclined plates 32 and 34 are fixedly connected to the upper ends of the adjacent torsion springs 38. When the contact inclined plates 36 rotate, the torsion springs 38 twist to generate torque. Under the action of the torque of the torsion springs 38, the power is provided for the reset of the contact inclined plates 36, which facilitates the next positioning operation. Support plates 6 are provided at both ends of the upper surface of the base plate 1. Guide posts 5 are provided between the support plates 6 and the processing table 2. Slide plates 4 are provided at the left end of positioning plate 31 and the right end of positioning plate 33. The slide plate 4 on the left side is laterally slidably connected between the outer arc surfaces of the two guide posts 5 on the left side.The right-side sliding plate 4 is slidably connected to the outer arc surface of the right-side guide post 5. The relative sliding of the sliding plate 4 and guide post 5 provides guidance and support for the movement of positioning plate 1 31 and positioning plate 2 33. A screw 8 is rotatably connected between the support plate 6 and the processing table 2. Each screw 8 corresponds to a sliding plate 4. The screw holes at the lower end of the sliding plate 4 are threadedly connected to the adjacent screw 8. A motor 7 is mounted on the surface of the support plate 6. The output shaft of the motor 7 is fixedly connected to the adjacent screw 8. Corrugated pipes 13 are installed between the sliding plate 4 and the support plate 6, and between the sliding plate 4 and the processing table 2. The corrugated pipes 13 are movably sleeved on the outer arc surface of the screw 8. The input end of the motor 7 is electrically connected to the output end of the microcontroller 12. When the motor 7 is started, its output shaft drives the screw 8 to rotate. Through the threaded connection between the screw 8 and the screw hole of the sliding plate 4, the sliding plate 4 moves left and right, providing guidance for the movement of positioning plate 1 31 and positioning plate 2 33. The relative movement provides power. During the movement of the slide plate 4, the bellows 13 extends and retracts, always movably sleeved on the outer arc surface of the screw 8, providing protection for the screw 8. Worms 10 are rotatably connected inside both the first positioning plate 31 and the second positioning plate 33. Worm wheels 11 are provided on the outer arc surface of the first rotating shaft of the first positioning ramp 32 and the outer arc surface of the second rotating shaft of the second positioning ramp 34. The two worm wheels 11 on the right side are respectively engaged with adjacent worms 10, and the two worm wheels 11 on the left side are each engaged with one worm 10. Motors 2 9 are provided on the surface of the slide plate 4. The output shafts of motors 2 9 are fixedly connected to adjacent worms 10. The input ends of motors 2 9 are electrically connected to the output ends of the microcontroller 12. When motors 2 9 are started, their output shafts drive the worms 10 to rotate. Through the engagement of the worms 10 and the worm wheels 11, the worm wheels 11 drive the first positioning ramp 32 and the second positioning ramp 34 to rotate.

[0016] The working principle of the positioning mechanism for input crank arm processing provided by this utility model is as follows: During the input crank arm processing, the input crank arm workpiece is placed on the upper surface of the processing table 2, with the V-shaped inner angle of the input crank arm facing to the left. According to the size of the input crank arm, the inner and outer angles of the V-shape of the input crank arm are pre-input into the microcontroller 12. Then, based on the pre-input data, the microcontroller 12 starts motor 9. The output shaft of motor 9 drives the worm gear 10 to rotate. Through the meshing connection between the worm gear 10 and the worm wheel 11, the worm wheel 11 drives the positioning inclined plate 32 and the positioning inclined plate 34 to rotate. The rotation amplitude of the two positioning inclined plates 32 is the same. The angles of the positioning inclined plates 32 and the positioning inclined plate 34 are adjusted. After the adjustment is completed, motor 7 is started. The output shaft of motor 7 drives the screw 8 to rotate. Through the threaded connection between the screw 8 and the screw hole of the slide plate 4, under the guidance and support of the guide post 5... The sliding plate 4 moves left and right, causing the positioning plate 31 and positioning plate 33 to move relative to each other. During the movement, the contact inclined plate 36 first contacts the surface of the input crank arm workpiece. Under the pressure of the input crank arm workpiece, it overcomes the torque of the torsion spring 38, causing the contact inclined plate 36 to rotate and gradually retract into the retraction groove 35. When the contact inclined plate 36 is completely retracted into the retraction groove 35, the contact inclined plate 36 contacts the detection end of the micro switch 37. The micro switch 37 sends a signal to the microcontroller 12, and the microcontroller 12 controls the positioning plate 31 and positioning plate 33 to stop moving. At this time, the positioning inclined plate 32 and positioning inclined plate 34 are both in contact with the inclined surface of the input crank arm workpiece. With the cooperation of the two symmetrical positioning inclined plates 32, the front and rear positions of the V-shaped input crank arm workpiece are positioned. With the cooperation of the positioning inclined plates 32 and positioning inclined plate 34, the left and right positions of the V-shaped input crank arm workpiece are positioned.

[0017] It is worth noting that the microcontroller 12 disclosed in the above embodiments can be a PIC16F1823-I / P microcontroller. The micro switch 37, motor 7 and motor 9 can be freely configured according to the actual application scenario. The micro switch 37 can be an LXW5-11G1 micro switch. Both motor 7 and motor 9 can be 3M57-42A stepper motors. The microcontroller 12 controls the operation of the micro switch 37, motor 7 and motor 9 using methods commonly used in the prior art.

[0018] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning mechanism for input crank arm processing, comprising a base plate (1), wherein a processing table (2) is provided at the center of the upper surface of the base plate (1), characterized in that: It also includes a positioning component (3); Positioning component (3): It includes positioning plate one (31), positioning inclined plate one (32), positioning plate two (33) and positioning inclined plate two (34). Positioning plate one (31) is laterally slidably connected to the left end of the base plate (1). Positioning plate one (31) is rotatably connected to positioning inclined plate one (32) through a rotating shaft one. The two positioning inclined plates one (32) are symmetrical front and back. Positioning plate two (33) is laterally slidably connected to the right end of the base plate (1). The left ends of the two positioning plates two (33) are rotatably connected to positioning inclined plate two (34) through a rotating shaft two.

2. The positioning mechanism for input crank arm processing according to claim 1, characterized in that: It also includes a microcontroller (12), which is located on the left side of the base plate (1), and the input terminal of the microcontroller (12) is electrically connected to an external power supply.

3. The positioning mechanism for input crank arm processing according to claim 2, characterized in that: The positioning component (3) also includes a folding groove (35), a contact inclined plate (36), and a micro switch (37). The folding groove (35) is respectively set on the side of the positioning inclined plate one (32) and the positioning inclined plate two (34) near the processing table (2). The upper and lower inner walls of the folding groove (35) are rotatably connected to the contact inclined plate (36) through a rotating shaft three. The interior of the folding groove (35) is provided with a micro switch (37) that is installed in cooperation with the contact inclined plate (36). The output end of the micro switch (37) is electrically connected to the input end of the microcontroller (12).

4. The positioning mechanism for input crank arm processing according to claim 3, characterized in that: The positioning component (3) also includes torsion springs (38), which are movably sleeved on the outer arc surface of the rotating shaft of the contact inclined plate (36). The lower end of the torsion springs (38) is fixedly connected to the adjacent contact inclined plate (36), and the first positioning inclined plate (32) and the second positioning inclined plate (34) are fixedly connected to the upper end of the adjacent torsion springs (38).

5. A positioning mechanism for input crank arm processing according to claim 2, characterized in that: The upper surface of the base plate (1) is provided with support plates (6) at both the left and right ends. The support plates (6) and the processing table (2) are provided with guide columns (5). The left end of the positioning plate one (31) and the right end of the positioning plate two (33) are provided with sliding plates (4). The sliding plate (4) on the left side is slidably connected between the outer arc surfaces of the two guide columns (5) on the left side, and the sliding plate (4) on the right side is slidably connected to the outer arc surfaces of the guide columns (5) on the right side.

6. A positioning mechanism for input crank arm processing according to claim 5, characterized in that: The support plate (6) and the processing table (2) are respectively rotatably connected by screws (8), and the screws (8) correspond one-to-one with the slide plate (4). The screw holes at the lower end of the slide plate (4) are respectively threaded to the adjacent screws (8). The surface of the support plate (6) is respectively provided with motors (7). The output shaft of motors (7) is respectively fixedly connected to the adjacent screws (8). Corrugated pipes (13) are respectively provided between the slide plate (4) and the support plate (6) and between the slide plate (4) and the processing table (2). The corrugated pipes (13) are respectively movably sleeved on the outer arc surface of the screws (8). The input end of motors (7) is electrically connected to the output end of the microcontroller (12).

7. A positioning mechanism for input crank arm processing according to claim 5, characterized in that: The interior of positioning plate one (31) and the interior of positioning plate two (33) are rotatably connected to worm gears (10). The outer arc surface of the first rotating shaft of positioning inclined plate one (32) and the outer arc surface of the second rotating shaft of positioning inclined plate two (34) are provided with worm wheels (11). The two worm wheels (11) on the right side are respectively meshed with the adjacent worm gears (10), and the two worm wheels (11) on the left side are respectively meshed with one worm gear (10). The surface of the slide plate (4) is provided with motor two (9). The output shaft of motor two (9) is respectively fixedly connected to the adjacent worm gears (10). The input end of motor two (9) is electrically connected to the output end of the microcontroller (12).

Images