A high-efficiency machining and positioning fixture for adjustable precision holes on the end face of a cast iron gear disc

Abstract

This utility model relates to the field of cast iron gear disc processing technology, specifically to an adjustable high-efficiency machining and positioning fixture for precision holes on the end face of a cast iron gear disc. The fixture includes an adjustment mechanism, which comprises a processing table. A guide plate is provided on the inner side of the processing table, and the inner side of the processing table is fixedly connected to one end of the guide plate. A backing plate is provided on the inner wall of the guide plate, and the inner wall of the guide plate is slidably connected to the bottom end of the backing plate. This adjustable high-efficiency machining and positioning fixture for precision holes on the end face of a cast iron gear disc, by starting a motor, causes the connected drive disc to begin rotating at an angle. The drive disc has four pressing arms, one end of which has a bevel. Therefore, as the drive disc rotates, the bevel of the pressing arm first contacts the corner of the backing plate. When the backing plate is driven by an external force, it moves on the guide plate and simultaneously makes close contact with the inner side of the cast iron gear disc. Therefore, by gradually fixing the cast iron gear disc, it can be used for cast iron gear discs of different diameters.

Description

Technical Field

[0001] This utility model relates to the field of cast iron gear plate processing technology, specifically to an adjustable and efficient machining and positioning fixture for precision holes on the end face of a cast iron gear plate. Background Technology

[0002] A cast iron gear disc is a disc-shaped mechanical part made of cast iron (such as gray cast iron, ductile iron, etc.) with a toothed structure on its outer or inner ring. It is usually used as a transmission component to transmit torque, change speed or direction of motion, and is commonly found in gearboxes, reducers, machine tool transmission systems and other equipment.

[0003] In existing technologies, during the production of cast iron gear discs, it is necessary to drill holes on their end faces. The drilling is done by positioning the cast iron gear disc with tooling. The tooling positioning can limit the workpiece's degree of freedom through mechanical structure, so that the drilling position is completely coincident with the coordinate system of the design drawings. At the same time, the cutting force is dispersed through multi-point support, suppressing the impact of high-frequency vibration on the drill bit life and hole wall quality, and finally realizing multi-station continuous processing in a single clamping.

[0004] However, during the machining process, since cast iron gear discs come in various types and have different diameters, the tooling can perform positioning work for cast iron gear discs within a small range. However, when facing cast iron gear discs with larger diameters, the positioning stroke of the tooling may be insufficient, causing the backing plate to be unable to move to fit tightly against the inner side of the large-diameter gear disc, resulting in insufficient clamping force or deviation of the positioning datum. To address this, we propose an adjustable and efficient machining positioning tooling for the precision holes on the end face of cast iron gear discs. Utility Model Content

[0005] One of the technical problems to be solved by this application is: to enable positioning of cast iron gear discs within a certain range.

[0006] To address the aforementioned technical problems, this application provides an adjustable high-efficiency machining and positioning fixture for precision holes on the end face of a cast iron gear disc. The fixture includes an adjustment mechanism with a limit mechanism on one side. The adjustment mechanism includes a machining table with a guide plate on its inner side. The inner side of the machining table is fixedly connected to one end of the guide plate. A backing plate is provided on the inner wall of the guide plate, and the inner wall of the guide plate is slidably connected to the bottom end of the backing plate. A pressing arm is provided on one side of the backing plate, and one side of the backing plate rotatably contacts one inclined end of the pressing arm. A drive disk is provided at one end of the pressing arm, and one end of the pressing arm is fixedly connected to one side of the drive disk.

[0007] In some embodiments, the limiting mechanism includes a limiting plate, an inner wall of which is provided with a limiting rod, the inner wall of which is rotatably in contact with the outer side of the limiting rod, the top end of the limiting rod being fixedly connected to the bottom side of the extrusion arm, and a bottom support being provided on the bottom side of the limiting plate, the bottom side of which is fixedly connected to one side of the bottom support.

[0008] In some embodiments, a motor is provided at the center of the bottom side of the drive disk, the center of the bottom side of the drive disk is fixedly connected to the output end of the motor, and the outer side of the motor is fixedly connected to the inner wall of the base.

[0009] In some embodiments, the bottom end of the base is fixedly connected to the top side of the inner surface of the processing table, and an inner rod is provided on the inner side of the processing table, with one end of the inner rod being fixedly connected to the inner side of the processing table.

[0010] In some embodiments, one end of the inner rod is slidably connected to the inner wall of the backing plate, a spring is provided on one side of the backing plate, one side of the backing plate is fixedly connected to one end of the spring, and one end of the spring is fixedly connected to the inner side of the processing table.

[0011] In some embodiments, a support plate is provided on the inner side of the processing table, one end of the inner side of the processing table is fixedly connected to one side of the support plate, a lead screw is provided on the top side of the support plate, and the top side of the support plate is rotatably connected to the bottom end of the lead screw.

[0012] In some embodiments, a connecting plate is provided on the outer side of the lead screw, and the outer side of the lead screw is threadedly rotatably connected to the inner wall of the connecting plate. A bracket is provided on one side of the connecting plate, and one side of the connecting plate is fixedly connected to one end of the bracket. The other end of the bracket is slidably connected to the inner wall of the backing plate on both the inner and outer sides.

[0013] In some embodiments, a throttle is provided at the top of the lead screw, and the top of the lead screw is fixedly connected to the center of the bottom side of the throttle.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. By starting the motor, the connected drive plate begins to rotate at an angle. The drive plate has four pressing arms, one end of which has an inclined surface. Therefore, as the drive plate rotates, the inclined surface of the pressing arm first contacts the corner of the backing plate. When the backing plate is driven by an external force, it will move on the guide plate and make close contact with the inner side of the cast iron gear plate. Therefore, by fixing the cast iron gear plate in a gradual manner, it can be used for cast iron gear plates of different diameters, improving the versatility of the tooling and its adaptability to cast iron gear plates of different specifications.

[0016] 2. By rotating the throttle, the connecting plate on the lead screw moves from its original position, and the bracket is raised or lowered in the same way. This provides a certain support from the bottom side of the cast iron gear plate, making the cast iron gear plate more stable during processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a top view of the adjustment mechanism assembly of this utility model;

[0019] Figure 3 This is an enlarged structural schematic diagram of the adjustment mechanism component of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the adjustment mechanism component of this utility model;

[0021] Figure 5 This is a bottom view of the limiting mechanism component of this utility model;

[0022] In the diagram: 1. Adjustment mechanism; 11. Processing table; 12. Guide plate; 13. Backing plate; 14. Inner rod; 15. Spring; 16. Extrusion arm; 17. Drive plate; 18. Motor; 19. Base support; 110. Support plate; 111. Lead screw; 112. Bracket; 113. Throttle; 114. Connecting plate;

[0023] 2. Limiting mechanism; 21. Limiting plate; 22. Limiting rod. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figures 1-5This utility model provides a technical solution: an adjustable high-efficiency machining and positioning fixture for precision holes on the end face of a cast iron gear disc, including an adjustment mechanism 1. A limit mechanism 2 is provided on one side of the adjustment mechanism 1. The adjustment mechanism 1 includes a machining table 11, with a guide plate 12 on its inner side. The inner side of the machining table 11 is fixedly connected to one end of the guide plate 12. A backing plate 13 is provided on the inner wall of the guide plate 12, and the inner wall of the guide plate 12 is slidably connected to the bottom end of the backing plate 13. A pressing arm 16 is provided on one side of the backing plate 13. One side of 13 is in rotatable contact with one end of the extrusion arm 16. A drive disk 17 is provided at one end of the extrusion arm 16, and one end of the extrusion arm 16 is fixedly connected to one side of the drive disk 17. A motor 18 is provided at the center of the bottom side of the drive disk 17, and the output end of the motor 18 is fixedly connected to the center of the bottom side of the drive disk 17. The outer side of the motor 18 is fixedly connected to the inner wall of the base 19. The bottom end of the base 19 is fixedly connected to the top side of the inner surface of the processing table 11. An inner rod 14 is provided on the inner side of the processing table 11. The inner side of the table 11 is fixedly connected to one end of the inner rod 14. The outer side of one end of the inner rod 14 is slidably connected to the inner wall of the backing plate 13. A spring 15 is provided on one side of the backing plate 13, and one end of the spring 15 is fixedly connected to the side of the backing plate 13. One end of the spring 15 is fixedly connected to the inner side of the processing table 11. A support plate 110 is provided on the inner side of the processing table 11, and one end of the inner side of the processing table 11 is fixedly connected to one side of the support plate 110. A lead screw 111 is provided on the top side of the support plate 110. The top side of the screw 111 is rotatably connected to the bottom end of the lead screw 111. A connecting plate 114 is provided on the outer side of the lead screw 111. The outer side of the lead screw 111 is threadedly rotatably connected to the inner wall of the connecting plate 114. A bracket 112 is provided on one side of the connecting plate 114. One side of the connecting plate 114 is fixedly connected to one end of the bracket 112. The outer side of the other end of the bracket 112 is slidably connected to the inner wall of the backing plate 13. A throttle 113 is provided at the top of the lead screw 111. The top of the lead screw 111 is fixedly connected to the center of the bottom side of the throttle 113.

[0026] When using this type of high-efficiency machining and positioning fixture with adjustable precision holes on the end face of a cast iron gear disc, the cast iron gear disc is first placed on the machining table 11. Four guide rails are designed on the inner side of the machining table 11, and each guide rail has a backing plate 13. When fixing the cast iron gear disc, a base support 19 is designed on the top side of the inner surface of the machining table 11. A motor 18 is installed on the inner wall of the top of the base support 19. Then, by starting the motor 18, the connected drive disc 17 begins to rotate. The drive disc 17 has four pressing arms 16, one end of which has a bevel. Therefore, as the drive disc 17 rotates, the bevel of the pressing arm 16 first contacts the corner of the backing plate 13. When the backing plate 13 is driven by an external force, it moves on the guide plate 12 and simultaneously makes close contact with the inner side of the cast iron gear disc. Therefore, by fixing the cast iron gear disc in a gradual manner, it can be used for cast iron gear discs of different diameters, improving the versatility of the fixture and its adaptability to different specifications of cast iron gear discs.

[0027] A bracket 112 is designed through the inner wall of the back plate 13, and a connecting plate 114 is designed at one end of the bracket 112. The connecting plate 114 is located outside the lead screw 111. Therefore, by rotating the throttle 113, the connecting plate 114 on the lead screw 111 moves from its original position, and the bracket 112 is raised or lowered in the same way. This can provide a certain support capacity from the bottom side of the cast iron gear plate, making the cast iron gear plate more stable during the processing.

[0028] A spring 15 is installed on the inner side of the processing table 11, and the spring 15 is located on the outer side of the inner rod 14. The two are connected in contact. At the same time, the other end of the spring 15 is fixed to one side of the back plate 13, and the inner rod 14 passes through the inner wall of the back plate 13. The inner rod 14 can keep the back plate 13 stable in the direction of movement during the movement, and prevent the back plate 13 from shaking or deviating in the guide rail. After the processing is completed, the drive disk 17 rotates in the opposite direction to separate the extrusion arm 16 from the back plate 13. The elastic potential energy of the spring 15 is released, pushing the back plate 13 to automatically reset along the guide rail, thereby releasing the fixation on the cast iron gear disk.

[0029] Example 2: Please refer to Figures 1-5 The limiting mechanism 2 includes a limiting plate 21, and a limiting rod 22 is provided on the inner wall of the limiting plate 21. The inner wall of the limiting plate 21 is rotatably in contact with the outer side of the limiting rod 22. The top end of the limiting rod 22 is fixedly connected to the bottom side of the extrusion arm 16. A bottom support 19 is provided on the bottom side of the limiting plate 21, and the bottom side of the limiting plate 21 is fixedly connected to one side end of the bottom support 19.

[0030] Four support rods are designed along the circumference of the base 19. The top of the support rods is fixed with a limiting plate 21. Four linear grooves are opened in the limiting plate 21, and each groove has a connecting rod. The top of the connecting rod is fixed to the bottom side of the extrusion arm 16. In this way, after the extrusion arm 16 rotates to a certain angle, the linear grooves can prevent the extrusion arm 16 from going too far past the backing plate 13, so that it cannot exert external force on the backing plate 13 again. This ensures that the positioning mechanism of the tooling is always in an effective working state. When the drive plate 17 drives the extrusion arm 16 to rotate, the cooperation between the linear grooves and the connecting rods forms a mechanical limit, so that the rotation range of the extrusion arm 16 is limited to the design range.

[0031] Please see Figures 1-5 By starting the motor 18, the connected drive disc 17 begins to rotate. The drive disc 17 has four pressing arms 16, each with a bevel at one end. As the drive disc 17 rotates, the bevel of the pressing arm 16 first contacts the corner of the backing plate 13. When the backing plate 13 is driven by an external force, it moves on the guide plate 12 and simultaneously makes close contact with the inner side of the cast iron gear disc. Therefore, by gradually fixing the cast iron gear disc, different diameter cast iron gear discs can be accommodated. Then, by rotating the throttle 113, the... The connecting plate 114 on the lead screw 111 moves from its original position, and the bracket 112 is raised or lowered in the same way. This provides a certain support from the bottom side of the cast iron gear plate, making the cast iron gear plate more stable during processing. Secondly, the inner rod 14 allows the back plate 13 to maintain the stability of its movement direction during the movement, preventing the back plate 13 from shaking or shifting in the guide rail. After processing, the drive plate 17 rotates in the opposite direction to separate the pressing arm 16 from the back plate 13. The elastic potential energy of the spring 15 is released, pushing the back plate 13 to automatically reset along the guide rail.

[0032] Four linear grooves are provided in the limiting plate 21, and each groove has a connecting rod. The top of the connecting rod is fixed to the bottom side of the extrusion arm 16. In this way, after the extrusion arm 16 rotates to a certain angle, the linear grooves can prevent the extrusion arm 16 from going too far past the backing plate 13, so that it cannot exert external force on the backing plate 13 again, thereby ensuring that the positioning mechanism of the tooling is always in an effective working state.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-efficiency machining and positioning fixture for adjusting the precision hole on the end face of a cast iron gear disc, characterized in that: The device includes an adjustment mechanism (1), a limit mechanism (2) on one side of the adjustment mechanism (1), a processing table (11), a guide plate (12) on the inner side of the processing table (11), the inner side of the processing table (11) being fixedly connected to one end of the guide plate (12), a backing plate (13) on the inner wall of the guide plate (12), the inner wall of the guide plate (12) being slidably connected to the bottom end of the backing plate (13), an extrusion arm (16) on one side of the backing plate (13), the side of the backing plate (13) being rotatably contacted with one end of the extrusion arm (16), a drive disk (17) on one end of the extrusion arm (16), and one end of the extrusion arm (16) being fixedly connected to one side of the drive disk (17).

2. The cast iron gear disc end face fine hole adjustable efficient machining positioning tooling according to claim 1, characterized in that: The limiting mechanism (2) includes a limiting plate (21), and a limiting rod (22) is provided on the inner wall of the limiting plate (21). The inner wall of the limiting plate (21) is rotatably in contact with the outer side of the limiting rod (22). The top end of the limiting rod (22) is fixedly connected to the bottom side of the extrusion arm (16). A base support (19) is provided on the bottom side of the limiting plate (21). The bottom side of the limiting plate (21) is fixedly connected to one side of the base support (19).

3. The cast iron gear disc end face fine hole adjustable efficient machining positioning tooling according to claim 1, characterized in that: A motor (18) is provided at the bottom center of the drive disk (17), and the bottom center of the drive disk (17) is fixedly connected to the output end of the motor (18). The outer side of the motor (18) is fixedly connected to the inner wall of the base (19).

4. The cast iron gear disc end face fine hole adjustable high-efficiency machining positioning tooling according to claim 3, characterized in that: The bottom end of the base (19) is fixedly connected to the top side of the inner surface of the processing table (11). An inner rod (14) is provided on the inner side of the processing table (11), and one end of the inner rod (14) is fixedly connected to the inner side of the processing table (11).

5. The cast iron gear disc end face fine hole adjustable efficient machining positioning tooling according to claim 4, characterized in that: One end of the inner rod (14) is slidably connected to the inner wall of the back plate (13). A spring (15) is provided on one side of the back plate (13). One side of the back plate (13) is fixedly connected to one end of the spring (15). One end of the spring (15) is fixedly connected to the inner side of the processing table (11).

6. The cast iron gear disc end face fine hole adjustable efficient machining positioning tooling according to claim 5, characterized in that: The processing table (11) is provided with a support plate (110) on its inner side. One end of the inner side of the processing table (11) is fixedly connected to one side of the support plate (110). A lead screw (111) is provided on the top side of the support plate (110). The top side of the support plate (110) is rotatably connected to the bottom end of the lead screw (111).

7. The cast iron gear disc end face fine hole adjustable efficient machining positioning tooling according to claim 6, characterized in that: A connecting plate (114) is provided on the outer side of the lead screw (111). The outer side of the lead screw (111) is threadedly rotatably connected to the inner wall of the connecting plate (114). A bracket (112) is provided on one side of the connecting plate (114). One side of the connecting plate (114) is fixedly connected to one end of the bracket (112). The outer side of the other end of the bracket (112) is slidably connected to the inner wall of the backing plate (13).

8. The cast iron gear disc end face fine hole adjustable efficient machining positioning tooling according to claim 7, characterized in that: The top end of the lead screw (111) is provided with a throttle (113), and the top end of the lead screw (111) is fixedly connected to the center of the bottom side of the throttle (113).

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