Special-shaped taper thin-wall clamping device

Abstract

The utility model discloses a special-shaped taper thin-wall clamping device which comprises a rotating deflector rod, a clamping cone and a mandrel, the clamping cone is in a circular truncated cone shape, the rotating deflector rod is connected to the large-diameter end of the clamping cone, the small-diameter end of the clamping cone is provided with a threaded blind hole, the outer wall of the rear end of the mandrel is provided with an external thread, and the outer wall of the rear end of the mandrel is provided with an internal thread. The rear end of the mandrel is in threaded connection with the threaded blind hole, and the rotating deflector rod and the mandrel are located on the same axis. The special-shaped barrel-shaped thin-wall workpiece clamping device can be tightly attached to a special-shaped barrel-shaped thin-wall workpiece, deformation of the special-shaped barrel-shaped thin-wall workpiece during machining is prevented, large torsion can be rapidly and evenly transmitted to the special-shaped barrel-shaped thin-wall workpiece, and accurate machining is facilitated.

Description

Technical Field

[0001] The utility model belongs to mechanical tooling, and more specifically, relates to a clamping device for special-shaped taper thin-walled parts. Background Art

[0002] Before a workpiece starts to be machined, it is necessary to first make the workpiece occupy a correct position on a machine tool or in a fixture, and this process is called positioning; in order to prevent the positioned workpiece from being displaced under the action of cutting force and keep it in the correct position during the machining process, it is also necessary to clamp the workpiece tightly, and this process is called clamping.

[0003] When machining special-shaped cylindrical thin-walled parts, due to the small wall thickness, it is impossible to apply clamping force on the outside of the special-shaped cylindrical thin-walled parts. Only the method of pressing plates on the end faces can be used to clamp both ends of the special-shaped cylindrical thin-walled parts for machining. Such a fixing method cannot ensure the concentricity between the special-shaped cylindrical thin-walled parts and the lathe rotating shaft, and there is no support in the inner cavity of the special-shaped cylindrical thin-walled parts. The special-shaped cylindrical thin-walled parts do not fit tightly with the lathe rotating shaft, resulting in easy deformation of the special-shaped cylindrical thin-walled parts during machining and easy collision between the pressing plate and the tool, which is dangerous. Content of the Utility Model

[0004] The purpose of the utility model is to provide a clamping device for special-shaped taper thin-walled parts, which fits tightly with the special-shaped cylindrical thin-walled parts, prevents the special-shaped cylindrical thin-walled parts from deforming during machining, can quickly and evenly transmit large torque to the special-shaped cylindrical thin-walled parts, and is convenient for precise machining.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The clamping device for special-shaped taper thin-walled parts includes: a rotating lever, a clamping cone, and a mandrel. The outer shape of the clamping cone is a frustum of a cone. The rotating lever is connected to the large-diameter end of the clamping cone. A threaded blind hole is provided at the small-diameter end of the clamping cone. The outer wall of the rear end of the mandrel is provided with an external thread, and the rear end of the mandrel is threadedly connected to the threaded blind hole. The rotating lever and the mandrel are located on the same axis.

[0007] Further, the side wall of the clamping cone is a conical surface.

[0008] Further, a threaded ring is installed on the mandrel to lock the mandrel by using the threaded ring.

[0009] Further, an extrusion round plate is provided on one side of the threaded blind hole of the clamping cone. A round plate through hole is provided at the center of the extrusion round plate. The threaded ring is located in front of the extrusion round plate, and the mandrel passes through the round plate through hole and is connected to the threaded blind hole.

[0010] Further, the taper of the side wall of the clamping cone is 1.5:1000.

[0011] The technical effects of the utility model include:

[0012] The utility model fits closely with the special-shaped cylindrical thin-walled part, preventing the deformation of the special-shaped cylindrical thin-walled part during processing, solving the problem that the taper workpiece cannot be clamped, and being integrally installed on the lathe, capable of quickly and uniformly transmitting a large torque to the special-shaped cylindrical thin-walled part, facilitating precise processing.

[0013] The utility model clamps the special-shaped cylindrical thin-walled part quickly and conveniently, and can effectively improve the processing efficiency of the special-shaped cylindrical thin-walled part. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the special-shaped taper thin-walled clamping device in the utility model;

[0015] Figure 2 is an exploded structural diagram of the special-shaped taper thin-walled clamping device in the utility model;

[0016] Figure 3 is a schematic structural diagram of the extrusion circular plate in the utility model;

[0017] Figure 4 is a schematic diagram of the use state of the special-shaped taper thin-walled clamping device in the utility model. Detailed Embodiments

[0018] The following description fully shows the specific embodiments of the utility model, enabling those skilled in the art to practice and reproduce.

[0019] As Figure 1 shown, it is a schematic structural diagram of the special-shaped taper thin-walled clamping device in the utility model; as Figure 2 shown, it is an exploded structural diagram of the special-shaped taper thin-walled clamping device in the utility model.

[0020] The special-shaped taper thin-walled clamping device includes: a rotating lever 1, a clamping cone 2, and a mandrel 3. The outer shape of the clamping cone 2 is frustum-shaped, and the side wall is a conical surface. The rotating lever 1 and the mandrel 3 are respectively connected to the front and rear ends of the clamping cone 2, and the rotating lever 1 and the mandrel 3 are on the same axis.

[0021] The rotating lever 1 is connected (welded) to the large-diameter end of the clamping cone 2. A threaded blind hole 21 is provided at the small-diameter end of the clamping cone 2. The outer wall of the rear end of the mandrel 3 is provided with an external thread, and the rear end of the mandrel 3 is threadedly connected to the threaded blind hole 21. In order to prevent the mandrel 3 from loosening, a threaded ring 4 is installed on the mandrel 3, and the mandrel 3 is locked by the threaded ring 4. The taper of the side wall of the clamping cone 2 (the ratio of the bottom circle diameter D to the height H) is 1.5:1000.

[0022] As Figure 3 shown, it is a schematic structural diagram of the extrusion circular plate 22 in the utility model.

[0023] In order to further improve the fitting strength between the special-shaped cylindrical thin-walled part 5 and the clamping cone 2, an extrusion circular plate 22 is provided on one side of the threaded blind hole 21 of the clamping cone 2. A circular plate through-hole 23 is provided at the center of the extrusion circular plate 22. The threaded ring 4 is located in front of the extrusion circular plate 22. The mandrel 3 passes through the circular plate through-hole 23 and is connected to the threaded blind hole 21. While pressing the extrusion circular plate 22 tightly, the threaded ring 4 locks the mandrel 3.

[0024] As Figure 4 shown, it is a schematic diagram of the use state of the special-shaped taper thin-walled clamping device in the present invention.

[0025] The special-shaped cylindrical thin-walled part 5 belongs to a special-shaped taper workpiece, and the taper of its central hole is 1.5:1000, which is the same as that of the preferred embodiment of this application; the special-shaped cylindrical thin-walled part 5 is sleeved on the clamping cone 2, and the end of the special-shaped cylindrical thin-walled part 5 is struck with a copper rod so that the central hole of the special-shaped cylindrical thin-walled part 5 is closely attached to the side wall of the clamping cone 2; the rotating lever 1 is clamped to the chuck so that the rotating lever 1 rotates synchronously with the machine tool spindle, and the front end of the mandrel 3 is tightened with a machine tool center; the machine tool spindle drives the rotating lever 1 to rotate, the clamping cone 2 drives the special-shaped cylindrical thin-walled part 5 to rotate, and the turning tool is moved to machine the outer wall of the special-shaped cylindrical thin-walled part 5; after machining is completed, the rotation of the machine tool spindle is stopped, and the special-shaped cylindrical thin-walled part 5 is removed.

[0026] The terms used in the present invention are illustrative and exemplary, not restrictive. Since the present invention can be specifically implemented in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly interpreted within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A special-shaped tapered thin-wall clamping device, characterized in that: include: A rotating lever, a clamping cone, and a core shaft. The shape of the clamping cone is a truncated cone. The rotating lever is connected to the large diameter end of the clamping cone. The small diameter end of the clamping cone is provided with a threaded blind hole. The outer wall of the rear end of the core shaft is provided with an external thread. The rear end of the core shaft is threadedly connected to the threaded blind hole. The rotating lever and the core shaft are located on the same axis.

2. The special-shaped tapered thin-wall clamping device according to claim 1, characterized in that: The side wall of the clamping cone is a tapered surface.

3. The special-shaped tapered thin-wall clamping device according to claim 1, characterized in that: The mandrel is provided with a threaded ring, and the mandrel is locked by the threaded ring.

4. The special-shaped tapered thin-wall clamping device according to claim 3, characterized in that: An extrusion circular plate is arranged on one side of the threaded blind hole of the clamping cone, a circular plate through hole is arranged at the center of the extrusion circular plate, a threaded ring is located in the front of the extrusion circular plate, and the mandrel passes through the circular plate through hole and is connected to the threaded blind hole.

5. The special-shaped tapered thin-wall clamping device according to claim 1, characterized in that: The taper of the side wall of the clamping cone is 1.5:1000.

Images