A crankshaft deburring, grinding, and displacement fixture

Abstract

This utility model provides a crankshaft deburring and grinding positioning fixture, belonging to the technical field of crankshaft processing equipment. It solves the technical problem of insufficient adaptability of existing crankshaft deburring fixtures. This crankshaft deburring and grinding positioning fixture includes a center for abutting against one end of the crankshaft and a clamping plate for clamping and positioning the other end of the crankshaft. A vertically shaped positioning plate is provided between the center and the clamping plate to support the middle of the crankshaft. The positioning fixture also includes a support plate located between the center and the clamping plate and adjustable in height. The support plate is horizontally arranged, and the positioning plates are all connected to the upper side of the support plate. This utility model is applicable to crankshafts of different specifications.

Description

Technical Field

[0001] This utility model belongs to the technical field of crankshaft processing equipment and relates to a crankshaft deburring, grinding and displacement fixture. Background Technology

[0002] The crankshaft is the most important component in an engine. Most crankshafts are castings or forgings. Initially, the crankshaft surface is uneven. After rough machining, the crankshaft needs to be deburred and polished. To ensure machining accuracy and efficiency, robots are often used in conjunction with positioning fixtures to achieve deburring and grinding. At the same time, the crankshaft is machined evenly in the circumference. A positioner is used to achieve the rotation operation during the crankshaft grinding process.

[0003] For example, patent application number CN202021654582.2 discloses a crankshaft outer contour precision machining equipment, which includes a robot, a loading platform, a unloading platform, a tooling table, and a polishing platform. The robot is equipped with a floating spindle, and the floating spindle is equipped with a grinding tool. The workpiece to be processed is installed on the tooling table, and the tooling table is equipped with a servo rotary axis. The polishing platform is equipped with a polishing wheel and a cylinder.

[0004] The above-mentioned equipment still has shortcomings: the rotary shaft and other fixtures used to achieve crankshaft positioning are only applicable to crankshaft products of the same specification, which is not adaptable enough. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in existing technologies by providing a crankshaft deburring and grinding displacement fixture. The technical problem this utility model aims to solve is: how to improve the applicability of crankshaft grinding.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A crankshaft deburring and grinding positioning fixture includes a center for abutting against one end of the crankshaft and a chuck for clamping and positioning the other end of the crankshaft. A positioning insert plate in the shape of a vertical plate is provided between the center and the chuck to support the middle part of the crankshaft. The positioning fixture is characterized in that it further includes a support plate located between the center and the chuck and is adjustable up and down. The support plate is arranged horizontally, and the positioning insert plate is connected to the upper side of the support plate.

[0008] When hoisting crankshafts of different specifications to the fixture, they can be first supported and placed on the positioning plate. Then, the support plate rises, driving the crankshaft to rise. The rise stops when both ends of the crankshaft are aligned with the center and the chuck, respectively. Then, the center is controlled to move towards the end of the crankshaft, pushing the crankshaft axially to insert into the chuck for clamping and positioning. Subsequently, the chuck can drive the crankshaft to rotate for grinding. The support plate can rise to different heights according to different crankshaft specifications to ensure that both ends of the crankshaft are positioned by the center and the chuck, making it more versatile.

[0009] In the aforementioned crankshaft deburring and grinding positioning fixture, a horizontally arranged strip-shaped guide rail is fixed to the upper side of the support plate. The two ends of the guide rail are respectively positioned towards the center point and the chuck. At least one positioning insert is slidably connected to the guide rail. This allows the positioning insert to move horizontally to adjust its position, thus facilitating the support and positioning of crankshafts with different axial structural specifications and providing better applicability.

[0010] In the aforementioned crankshaft deburring and grinding positioning fixture, both sides of the slidable positioning plate are connected to the upper side of the support plate via a telescopic dust cover, with the guide rail positioned below the telescopic dust cover. This ensures that the connection between the positioning plate and the guide rail is always shielded by the telescopic dust cover, preventing grinding debris from intruding and obstructing sliding, thus guaranteeing the fixture's service life.

[0011] In the aforementioned crankshaft deburring and grinding displacement fixture, the fixture further includes a cylindrical telescopic dust cover II, the upper edge of which is circumferentially fixed to the outer edge of the support plate. This facilitates the concealment of the lifting components below the support plate by the telescopic dust cover, preventing grinding debris from affecting the lifting accuracy and ensuring service life.

[0012] In the aforementioned crankshaft deburring, grinding, and positioning fixture, the upper side of the positioning plate has a V-shaped or arc-shaped clearance notch. This facilitates initial positioning of the crankshaft through the clearance notch, preventing the crankshaft from rolling off during lifting and lowering, and ensuring safety.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] In this crankshaft deburring and grinding positioning fixture, the support plate used to support the crankshaft can be raised to different heights according to different crankshaft specifications so that the two ends of the crankshaft are positioned by the centers and chucks, making it more versatile. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the crankshaft grinding workstation used in this embodiment.

[0016] Figure 2 This is a three-dimensional structural diagram of this embodiment.

[0017] Figure 3 This is a top view of the structure of the retractable dust cover 2 in this embodiment.

[0018] Figure 4 yes Figure 3 Schematic diagram of the AA section.

[0019] In the diagram, 1. Top; 2. Clamping plate; 3. Positioning insert plate; 31. Clearance notch; 4. Support plate; 5. Guide rail; 6. Telescopic dust cover one; 7. Telescopic dust cover two; 8. Robot; 9. Lifting mechanism. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1-4 As shown, this crankshaft deburring and grinding positioning fixture includes a center 1 for abutting against one end of the crankshaft and a clamping plate 2 for clamping and positioning the other end of the crankshaft. A vertically shaped positioning plate 3 for supporting the middle of the crankshaft is provided between the center 1 and the clamping plate 2. The positioning fixture also includes a support plate 4 located between the center 1 and the clamping plate 2, which can be adjusted vertically via a lifting mechanism. The support plate 4 is horizontally arranged, and the positioning plates 3 are all connected to the upper side of the support plate 4. Specifically, the lifting mechanism is an existing X-shaped hinged fork arm driven by a lead screw. The lead screw drive ensures a self-locking effect, stabilizing the crankshaft height. Two horizontally arranged strip-shaped guide rails 5 are fixed to the upper side of the support plate 4, with both ends of the guide rails 5 facing the center 1 and the clamping plate 2 respectively. A positioning plate 3 is slidably connected to the guide rails 5. Both sides of the slidable positioning plate 3 are connected to the upper side of the support plate 4 via a telescopic dust cover 6, positioning the guide rails 5 below the telescopic dust cover 6. The displacement fixture also includes a cylindrical telescopic dust cover 7, the upper edge of which is circumferentially fixed to the outer edge of the support plate 4. The upper side of the positioning plate 3 has a V-shaped clearance notch 31.

[0022] During processing, the crankshaft is hoisted onto the support plate 4, so that the middle section of the crankshaft is embedded in the clearance notch 31 of the two positioning plates 3. Then, the support plate 4 is controlled by the lifting mechanism to drive the crankshaft to rise. The rise stops when the two ends of the crankshaft are directly aligned with the center 1 and the chuck 2 respectively. Then, the center 1 is fed horizontally in the axial direction to push the crankshaft into the chuck 2 to achieve clamping and positioning. The robot of the subsequent workstation can then perform deburring processing on the crankshaft.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A crankshaft deburring and grinding positioning fixture, comprising a center (1) for abutting against one end of the crankshaft and a clamping plate (2) for clamping and positioning the other end of the crankshaft, wherein a positioning insert plate (3) in the shape of a vertical plate for supporting the middle part of the crankshaft is provided between the center (1) and the clamping plate (2), characterized in that, The displacement fixture also includes a support plate (4) located between the tip (1) and the clamping plate (2) and adjustable up and down. The support plate (4) is arranged horizontally, and the positioning inserts (3) are all connected to the upper side of the support plate (4).

2. The crankshaft deburring and polishing swivel fixture of claim 1, wherein, The upper side of the support plate (4) is fixed with a horizontally arranged strip-shaped guide rail (5), with both ends of the guide rail (5) facing the tip (1) and the clamp (2) respectively, and at least one of the positioning inserts (3) is slidably connected to the guide rail (5).

3. The crankshaft deburring and polishing swivel fixture of claim 2, wherein, Both sides of the slidable positioning plate (3) are connected to the upper side of the support plate (4) through a telescopic dust cover (6), so that the guide rail (5) is located below the telescopic dust cover (6).

4. The crankshaft deburring and polishing positioner clamp of claim 1 or 2 or 3, wherein, The displacement fixture also includes a cylindrical telescopic dust cover (7), the upper edge of which is fixedly connected to the outer edge of the support plate (4) in a circumferential direction.

5. The crankshaft deburring and polishing positioner clamp of claim 1 or 2 or 3, wherein, The upper side of the positioning plate (3) has a V-shaped or arc-shaped clearance notch (31).

Images