JPS5932515Y2 - processing tools - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to improvement of processing tools.

Generally used files such as cast metal, copper, aluminum, etc.
When machining metals such as stainless steel or other materials, clogging may occur because there is no place for chips to escape.

Clogging frequently occurs in metal members, particularly soft members such as copper and aluminum, and removal of the clogs deteriorates work efficiency.

When chamfering is performed on the housing, there are drawbacks such as the tendency for secondary cracks to occur in the chamfered portion.

The present invention was developed based on the above-mentioned circumstances.The processed part of the elastic member wound in a spiral shape, on which the abrasive material is attached, is attached to a support body so that tensile deflection occurs. The mechanism is designed to expand and contract freely to prevent clogging and improve work efficiency.

Hereinafter, the present invention will be described based on embodiments with reference to the drawings.

As shown in Fig. 1, the machining section 1 is the main part of the machining tool.
is wound into a linear shape from a spring wire 2 (elastic member) of an appropriate diameter, hooks 4, 4 are formed at both ends of the cotton tube 3, and an abrasive material 5 is attached to the cotton tube 3.

In the above-mentioned cotton tube 3, like a normal tension spring, each wire ring is in pressure contact with each other in the free state (the figure shows the wires separated due to tensile deflection), and an appropriate initial tension is applied. , and the twisted outer circumferential surface has a V formed by an adjacent wire ring.
It is formed into a linear shape from the shaped groove.

As shown in FIGS. 1 and 2, the center of curvature of the hook 4.4 lies on the axis of the cotton tube 3.

The processing tool is also a cylindrical body with an appropriate size smaller than the inner diameter of the cotton tube 3 mentioned above, and has a flat surface of an appropriate length at one end 7 of the cylinder 6 to coaxially hold the processing part 1. It has a processed part support body 8 formed therein.

On the flat surface of this one end portion 7 is a cotton tube 3 in a free state.
There are projecting latches 9, 9 that lock the hooks 4.4 with a gap that is an appropriate dimension longer than the distance between the hooks 4, 4.

When the cotton tube 3 of the processing section 1 is inserted into one end 7 of the support body 8 and the hooks 4 are engaged with the latch 9.91'i, the processing is performed as shown in FIGS. 1 and 2. The part 1 is stretched and bent, and the cotton tube 3 creates a gap g1 between each wire ring, and a uniform gap g2 between it and the outer peripheral surface of the support 8.
occurs.

These gaps g1 and g2 allow the cotton tube 3 to freely expand and contract in the axial direction and to curve in the direction perpendicular to the axis.

Note that the cotton tube 3 is strongly stretched by the initial tension even when the gap g1 is not large.

A grip 10 is attached to the other end of the cylindrical column 6 of the support 80, and the grip 10 is gripped to perform shading.

Next, as another example, FIG. 3 shows a processing tool in which the spiral portion 3 of the processing portion 1 and the outer peripheral surface of the support 8 do not have a uniform gap g2.

The rest is the same as in the previous embodiment, and the helical line portion 3 can freely expand and contract in the axial direction.

In these embodiments, the processing is carried out on the spiral portion 3 of the processing section 1.
Rub the surface along the surface of the workpiece in the same way as when using a regular file.

In this case, the chips are distributed in the gap g between the wire rings of the wire portion 3.
1 is discharged.

At the same time, the wire portion 3 expands and contracts in response to fluctuations in frictional force, causing the wire ring to vibrate, thereby removing chips discharged into the gap g1 and preventing clogging.

Furthermore, if there is a gap g2 between the spiral portion 3 and the support 8, chips are also removed from the inside of the spiral portion 3, so that clogging can be further prevented.

Furthermore, when chamfering or the like is performed, the spiral line portion 3 curves due to the existence of the gap g2 and rubs against the corner of the workpiece, causing both ends of the chamfered surface to sag. This can prevent the occurrence of secondary Paris.

It should be noted that if the support 8 is inserted through the spiral portion 3, it is convenient for machining the inner peripheral surface of the hole.As described in detail above, in the present invention, the support body 8 is wound in a spiral shape and the abrasive material is attached. a processed part consisting of an elastic member wrapped in a linear shape; the elastic member wound in a linear shape is inserted into a cotton tube, and both ends of the elastic member are locked to give tensile deflection to the elastic member; Since the above-mentioned wire section is provided with a working part support that expands and contracts in the axial direction of the wire part, the chips generated during machining are discharged into the gap in the working part due to tensile deflection, and the above-mentioned chips are discharged due to the vibration of the wire ring. It can be removed from the gap to prevent clogging.

If chips can be easily removed in this manner, soft materials such as copper and aluminum, which generate large amounts of chips, can be efficiently processed.

In the case where a gap is provided between the twisted spiral portion and the support, when chamfering is performed, the spiral portion is curved, thereby preventing the occurrence of secondary fringing.

In addition, when processing the surface of a curved surface, the ribbed part curves along the curved surface, so compared to conventional files, it has many effects such as smooth processing along the curved surface without requiring skill. be.

It goes without saying that the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the spirit thereof, such as using a spring wire with a square cross section for the elastic member.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the processing tool of the present invention, FIG. 2 is a side view of the same as seen in direction A, and FIG. 3 is a side view of another embodiment. 1... Processing part, 2... Elastic member, 3.
...Round part, 5...Abrasive material, 8...
...Processing part support.

Claims (2)

[Scope of utility model registration request] (1) A processed part consisting of an elastic member wound in a spiral shape and to which an abrasive material is attached; and the elastic member wound in a spiral shape is inserted into a cotton cylinder and both ends of the elastic member are locked. A machining tool comprising: a machining part support body that applies tensile deflection to the elastic member and supports the elastic member so as to be expandable and contractible in the axial direction of the spiral portion. (2) Utility model registration claim 1, characterized in that a gap is provided between the cylindrical inner surface of the cotton tube that forms the processed part and the processed part support that locks the processed part. Processing tools listed.