Passively deformed internal-surface grinding wheel

Abstract

To provide an internal-surface grinding wheel for grinding an internal surface of a precision component.SOLUTION: A deformed grinding wheel (1) is fixed to a tube (2) with a clap (3); a rotating body (4) to which a permanent magnet (5) is attached is attached; a fluid joint (6) and a fluid tap (7) are attached to the tube (2); the deformed grinding wheel is inserted into a portion to be ground; high-pressure air or liquid is inserted into the fluid joint (6); and the deformed grinding wheel (1) is inflated, and the fluid cock (7) is closed. When direct rotation is carried out, the fluid joint (6) is fixed to a rotary raising / lowering mechanism such as a boring machine; when direct rotation cannot be carried out, an external stator is driven by a drive power source, and grinding is carried out by moving and rotating a traveling-mechanism external stator. Since a screw groove is provided at the tip part of the deformed grinding wheel and the fluidity of an abrasive can be secured, fluidizing equipment for the abrasive is not required.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] To polish the inner surfaces of precision parts, this grinding wheel is deformed to the same shape as the inner surface using hydraulic or air pressure, and has a screw groove in the deformed part to ensure the fluidity of the abrasive.If the wheel cannot be connected to a rotary lifting device, such as a curved or long, thin pipe shape, this is an internal grinding wheel that moves and rotates using an external rotating magnetic field.Technical background

[0002] By inserting it into the inner surface of a precision part and deforming it to the shape of the inner surface, it has become possible to perform complex inner surface polishing that was previously impossible.In addition, because it can be moved and rotated by an external rotating magnetic field, it is now possible to polish the inner surface even if it cannot be connected to a rotary lifting device. Summary of the Invention Problems that the invention aims to solve

[0003] The tip of the grinding wheel is deformed by hydraulic or air pressure to the same shape as the inner surface of the part, so there is no need to prepare a grinding bit in advance to match the object to be ground, as was the case in the past.The grinding wheel itself is the permanent magnet rotor of the motor, so it can move while rotating inside the part due to the rotating magnetic field from the outside.This makes it possible to grind the inner surfaces of precision parts that could not be ground in the past, such as curved shapes and long, thin pipe shapes, which could not be connected to a rotating shaft.Means to solve the problem

[0004] The tip of the grinding wheel is made of rubber or other material that can be stretched and deformed, and is inflated by hydraulic or air pressure to obtain a constant grinding pressure. The tip of the grinding wheel is equipped with a screw groove that ensures the fluidity of the abrasive. The grinding wheel has a permanent magnet rotor structure of a motor, allowing it to move and rotate without contact. Effects of the invention

[0005] Since the tip of the grinding wheel changes shape to match the object being polished, there is no need to create a bit in advance to match the object being polished. The tip of the wheel is equipped with a screw groove that ensures the fluidity of the abrasive, so there is no need for a circulation mechanism for the abrasive. It can be attached to a rotary lifting device such as a drill press for polishing. Since the grinding wheel is the permanent magnet rotor of a motor, it can be moved and rotated by an external rotating magnetic field to polish curved shapes and thin pipe shapes. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a configuration diagram showing a first embodiment of the invention according to this application. [Figure 2] 1 is a configuration diagram showing a first embodiment of the invention according to this application. DETAILED DESCRIPTION OF THE INVENTION

[0007] The modified grinding wheel (1) with an abrasive screw groove (8) and the tube (2) are fixed with a clamp (3), and the fluid joint (6), fluid cock (7) and rotor (4) are placed, and a permanent magnet (5) is attached. If it is not possible to connect to a rotary lifting device, a drive power supply (12), stator (10) and running mechanism (11) are used. [Explanation of symbols]

[0008] 1. Deformed grinding wheel 2 tubes 3 Clamp 4 rotors 5. Permanent magnets 6 Fluid Joint 7 Fluid cock 8 abrasive screw grooves 10 External Stator 11 Running mechanism 12 Drive power supply

Claims

1. A passively deforming internal grinding wheel that uses hydraulic or air pressure to expand the tip of the grinding wheel and deform it to the shape of the surface being ground.

2. A passively deformable internal grinding wheel in which the grinding wheel itself is a permanent magnet rotor of a motor, and moves and rotates when an external rotating magnetic field is applied.

3. A passively deformed internal grinding wheel with a screw groove at the tip of the grinding wheel that ensures the fluidity of the abrasive.

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