Positioning device for idle wheel machining

Abstract

The utility model discloses an idle wheel machining and positioning device which comprises a reference frame, three guide frames are arranged on the outer side of the reference frame, the guide frames are circumferentially distributed with the axis of the reference frame as the reference, a sliding frame is sleeved on the outer sides of the guide frames in a sliding mode, and the sliding frame is provided with a sliding groove. The top of the sliding frame is detachably connected with a positioning column used for corresponding to an inner hole of an idle wheel to be machined, and a driving assembly is arranged in the reference frame. And a pressing assembly is arranged at the top of the reference frame. The device has the beneficial effects that the sliding frame and the driving assembly are combined in the device, axis positioning of an inner hole of the idle wheel is achieved, the sliding frame can move synchronously, and the machining efficiency and stability are improved; the top face of the idle wheel is fixed through the pressing assembly, the loosening problem possibly occurring in the machining process is prevented, the machining quality is further improved, the whole device is easy and flexible to operate, and the stability and reliability of idle wheel positioning are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of idler wheel machining, and specifically to an idler wheel machining positioning device. Background Technology

[0002] An idler wheel is a wheel in a mechanical transmission system used to transmit power or change the direction of motion, but it does not directly participate in driving or outputting power. It is typically used to adjust the structural layout of the system, reduce the load on transmission components, or ensure the smooth operation of the transmission system. Precise positioning during the machining of the idler wheel ensures accurate relative positioning between the idler wheel and other transmission components, thereby guaranteeing the efficiency and stability of the transmission system.

[0003] When machining an idler wheel, the cutting tool rotates and the cutting motion is achieved by the tool's feed motion. The cutting tool often passes through the end face of the idler wheel during cutting. However, the existing idler wheel positioning is mostly achieved by the chuck positioning the idler wheel in the circumferential direction. This often cannot completely prevent the idler wheel from undergoing slight displacement due to axial vibration during machining. Since the end face is not effectively clamped, the vibration may lead to uneven distribution of cutting force, which in turn affects the surface finish and machining accuracy. Utility Model Content

[0004] The purpose of this invention is to provide an idler wheel machining positioning device to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides an idler wheel machining positioning device, including a reference frame, three guide frames are provided on the outside of the reference frame, the guide frames are distributed circumferentially with the axis of the reference frame as the reference, a sliding frame is slidably fitted on the outside of the guide frame, and a positioning post corresponding to the inner hole of the idler wheel to be machined is detachably connected to the top of the sliding frame. The reference frame is provided with a driving component that drives all the sliding frames to slide synchronously.

[0007] The top of the reference frame is equipped with a clamping assembly for pressing the top surface of the idler wheel to be processed.

[0008] Furthermore, the clamping assembly includes an electric telescopic rod disposed inside the reference frame. The telescopic end of the electric telescopic rod extends out of the reference frame and is connected to a guide bar. The guide bar extends horizontally, and both ends of the guide bar are slidably connected to slide rods. The movable end of the slide rod is provided with a downwardly extending pressure block.

[0009] Furthermore, the slide bar has a dovetail-shaped cross-section, and the slide bar slides in conjunction with the guide bar.

[0010] Furthermore, the guide frame has a trapezoidal cross-section with a small end face at the top, and the sliding frame slides in conjunction with the guide frame.

[0011] Furthermore, the bottom of the guide frame has an open structure, and the drive assembly includes a threaded rod rotatably connected inside the guide frame and a motor fixedly installed inside the reference frame. The threaded rod is threadedly engaged with the sliding frame, and the inner end of the threaded rod extends into the reference frame and is connected to a driven bevel gear. The output end of the motor is connected to a master bevel gear that meshes with all the driven bevel gears.

[0012] Furthermore, the bottom surface of the sliding frame is connected to a movable seat located inside the guide frame, and the movable seat is threadedly engaged with the threaded rod.

[0013] Furthermore, the positioning post is connected to the sliding frame by bolts.

[0014] Furthermore, the sliding frame is provided with a groove for insertion into the bottom of the positioning post.

[0015] Furthermore, the positioning post is rectangular, and has an arc surface on the side away from the axis of the reference frame.

[0016] The beneficial effects are:

[0017] The sliding frame and drive assembly in the device are combined to achieve axial positioning of the inner hole of the idler wheel, and the sliding frame can move synchronously, which improves processing efficiency and stability. Furthermore, the top surface of the idler wheel is fixed by the clamping assembly to prevent loosening problems that may occur during processing, which further improves the processing quality. The device is simple and flexible to operate, enhances the stability and reliability of idler wheel positioning, and improves the processing accuracy of the idler wheel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 2 This is a top view of the present invention.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Base frame; 2. Guide frame; 3. Sliding frame; 4. Positioning column; 5. Clamping assembly; 501. Electric telescopic rod; 502. Guide bar; 503. Slide rod; 6. Drive assembly; 601. Motor; 602. Main bevel gear; 603. Driven bevel gear; 604. Threaded rod; 605. Moving seat. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] First embodiment:

[0025] See Figures 1-2 As shown, this utility model provides an idler wheel machining positioning device, including a reference frame 1. The reference frame 1 is cylindrical with a cavity inside. A support plate for auxiliary fixing is provided at the bottom. Three guide frames 2 are provided on the outside of the reference frame 1. The guide frames 2 are distributed circumferentially with the axis of the reference frame 1 as the reference. The length direction of the guide frames 2 extends radially along the reference frame 1. A sliding frame 3 is slidably fitted on the outside of the guide frame 2. A positioning post 4 for the inner hole of the idler wheel to be machined is detachably connected to the top of the sliding frame 3. A driving component 6 is provided inside the reference frame 1 to drive all the sliding frames 3 to slide synchronously. The driving component 6 can drive all the sliding frames 3 to slide synchronously.

[0026] Furthermore, the top of the reference frame 1 is equipped with a clamping assembly 5 for clamping the top surface of the idler wheel to be processed;

[0027] When the device is in use, the drive assembly 6 is used to make all the sliding frames 3 slide toward the reference frame 1. When the positioning pin 4 corresponds to the inner hole of the idler wheel, the inner hole of the idler wheel passes through the clamping assembly 5 and all the positioning pins 4. The guide frame 2 supports the idler wheel. The drive assembly 6 drives all the sliding frames 3 to slide away from the reference frame 1 until the positioning ends of the three positioning pins 4 contact the inner wall of the idler wheel, thereby positioning the axis of the idler wheel's inner hole. The clamping assembly 5 is used to clamp the top surface of the idler wheel, thereby fixing the idler wheel as a whole, so as to facilitate the machining of the outer cylindrical tooth surface of the idler wheel.

[0028] After the outer cylindrical tooth surface of the idler wheel is machined, the clamping assembly 5 is released from the top surface of the idler wheel, and the driving assembly 6 is used to make all the sliding frames 3 slide toward the reference frame 1. Then the positioning pin 4 moves away from the inner wall of the idler wheel's inner hole, so that the idler wheel can be removed from the guide frame 2 for unloading.

[0029] The second embodiment differs from the first embodiment in that:

[0030] The clamping assembly 5 includes an electric telescopic rod 501 installed inside the reference frame 1. The telescopic end of the electric telescopic rod 501 extends out of the reference frame 1 and is connected to a guide bar 502. The guide bar 502 extends horizontally, and both ends of the guide bar 502 are slidably connected to sliding rods 503. The height of the guide bar 502 can be adjusted by extending or shortening the electric telescopic rod 501. When the idler wheel is installed, the electric telescopic rod 501 is lengthened, so that the guide bar 502 moves away from the reference frame 1, and the sliding rods 503 slide toward the inside of the guide bar 502. The distance between the movable ends of the two sliding rods 503 becomes smaller, so that the inner hole of the idler wheel can pass through the sliding rods 503 to reach the surface of the guide frame 2. After the positioning pin 4 positions the inner hole of the idler wheel, the sliding rod 503 is lengthened, and the electric telescopic rod 501 is shortened. The movable end of the sliding rod 503 is provided with a downwardly extending pressure block. The pressure block at the movable end of the sliding rod 503 is used to clamp the idler wheel, thus completing the overall fixation of the idler wheel with good fixation effect.

[0031] The slide rod 503 has a dovetail-shaped cross section. The slide rod 503 and the guide bar 502 slide together. The dovetail shape is used to achieve the sliding engagement between the slide rod 503 and the guide bar 502, which can guide the slide rod 503. Furthermore, the top surface of the slide rod 503 is provided with scale marks to facilitate observation of the extension distance of the slide rod 503.

[0032] The third embodiment differs from the first embodiment in that:

[0033] The guide frame 2 has a trapezoidal cross-section with a small end face at the top. The sliding frame 3 is slidably engaged with the guide frame 2. The bottom of the guide frame 2 is an open structure. The drive assembly 6 includes a threaded rod 604 rotatably connected inside the guide frame 2 and a motor 601 fixedly installed inside the reference frame 1. The threaded rod 604 is threadedly engaged with the sliding frame 3. The inner end of the threaded rod 604 extends into the reference frame 1 and is connected to a driven bevel gear 603. The output end of the motor 601 is connected to a main bevel gear 602 that meshes with all the driven bevel gears 603. When the idler wheel needs to be positioned, the sliding frame 3 drives the positioning pins 4 to move. The three positioning pins 4 support the inner hole of the idler wheel, thus positioning the axis of the inner hole of the idler wheel. When the sliding frame 3 needs to be moved, the motor 601 is energized, which drives the main bevel gear 602 to rotate. The gear meshing enables the three driven bevel gears 603 and the threaded rod 604 to rotate synchronously. Since the sliding frame 3 is slidably set on the outside of the guide frame 2, and the sliding... The sliding frame 3 is threadedly engaged with the threaded rod 604. As the threaded rod 604 rotates, the sliding frame 3 moves along the length of the guide frame 2, thereby adjusting the position of the sliding frame 3 and the positioning pin 4. The positioning pin 4 presses against the inner wall of the idler wheel's inner hole, thereby positioning the axis of the idler wheel's inner hole. When the motor 601 rotates in the reverse direction, all the sliding frames 3 can move in the reverse direction to loosen the inner hole of the idler wheel and release the idler wheel from its fixation. Furthermore, the inner bottom surface of the sliding frame 3 is connected to a movable seat 605 located inside the guide frame 2. The movable seat 605 is threadedly engaged with the threaded rod 604, thereby achieving the threaded connection between the sliding frame 3 and the threaded rod 604. The movable seat 605 is located inside the sliding frame 3 and the guide frame 2. The guide frame 2 has a trapezoidal structure. When machining the idler wheel, the side wall of the guide frame 2 can be used to guide the machining chips, thereby reducing the adhesion of chips to the threaded rod 604 and protecting the threaded rod 604.

[0034] The fourth embodiment differs from the first embodiment in that:

[0035] The positioning post 4 is connected to the sliding frame 3 by bolts. The bolt connection between the positioning post 4 and the sliding frame 3 enables the detachable connection of the positioning post 4. Furthermore, the sliding frame 3 is provided with a groove for inserting into the bottom of the positioning post 4. When installing the positioning post 4, the bottom of the positioning post 4 can be inserted into the groove on the sliding frame 3 and then fixed by bolts. The groove can limit the installation direction and position of the positioning post 4.

[0036] In the structure of the positioning post 4, the positioning post 4 is rectangular, and the side away from the axis of the reference frame 1 is provided with an arc surface. The side of the positioning post 4 away from the axis of the reference frame 1 contacts the hole wall of the idler wheel. The arc surface can reduce the scratches on the inner wall of the idler wheel and protect the idler wheel.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A positioning device for idler wheel machining, comprising a reference frame (1), characterized in that: The reference frame (1) is provided with three guide frames (2) on the outside. The guide frames (2) are distributed circumferentially with the axis of the reference frame (1) as the reference. The guide frames (2) are slidably fitted with sliding frames (3) on the outside. The top of the sliding frames (3) is detachably connected with a positioning post (4) for the inner hole of the idler wheel to be processed. The reference frame (1) is provided with a drive assembly (6) for driving all the sliding frames (3) to slide synchronously. The top of the reference frame (1) is provided with a clamping assembly (5) for pressing the top surface of the idler wheel to be processed.

2. The idler wheel machining positioning device according to claim 1, characterized in that: The clamping assembly (5) includes an electric telescopic rod (501) disposed inside the reference frame (1). The telescopic end of the electric telescopic rod (501) extends out from the reference frame (1) and is connected to a guide bar (502). The guide bar (502) extends horizontally, and both ends of the guide bar (502) are slidably connected to a slide rod (503). The movable end of the slide rod (503) is provided with a downwardly extending pressure block.

3. The idler wheel machining positioning device according to claim 2, characterized in that: The slide bar (503) has a dovetail-shaped cross section and slides in conjunction with the guide bar (502).

4. The idler wheel machining positioning device according to claim 1, characterized in that: The guide frame (2) has a trapezoidal cross section with a small end face at the top. The sliding frame (3) is in sliding cooperation with the guide frame (2).

5. The idler wheel machining positioning device according to claim 4, characterized in that: The bottom of the guide frame (2) is an open structure. The drive assembly (6) includes a threaded rod (604) rotatably connected inside the guide frame (2) and a motor (601) fixedly installed inside the reference frame (1). The threaded rod (604) is threadedly engaged with the sliding frame (3). The inner end of the threaded rod (604) extends into the reference frame (1) and is connected to a bevel gear (603). The output end of the motor (601) is connected to a main bevel gear (602) meshing with all the bevel gears (603).

6. The idler wheel machining positioning device according to claim 5, characterized in that: The sliding frame (3) has a movable seat (605) connected to the bottom surface of the sliding frame (3) and located inside the guide frame (2). The movable seat (605) is threadedly engaged with the threaded rod (604).

7. The idler wheel machining positioning device according to claim 1, characterized in that: The positioning post (4) is connected to the sliding frame (3) by bolts.

8. The idler wheel machining positioning device according to claim 7, characterized in that: The sliding frame (3) is provided with a groove that is inserted into the bottom of the positioning post (4).

9. The idler wheel machining positioning device according to claim 8, characterized in that: The positioning column (4) is rectangular, and its side away from the axis of the reference frame (1) has an arc surface.

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