JP2000317731A - Trowel burnisher for burnishing recessed face - Google Patents

Abstract

PROBLEM TO BE SOLVED: To resolve the chattering of burnishing by protruding a wide plate-like holder section at an obtuse angle against a shank at the tip of the shank in the reciprocating direction of burnishing, and fixing a short bar-shaped metal file to the tip of the holder section perpendicularly to the protruding direction of the holder section to form a metal trowel file for burnishing a recessed face for use. SOLUTION: A wide plate-like holder section 2 is integrally extended at the tip of a shank 1 at the angle θ1 of 105 deg. formed with the shank 1 in the reciprocating direction of burnishing, and a short bar-shaped metal file 3 made of a flat file with a rectangular cross section is fixed to the tip of the holder section 2 by welding at the angle θ2 of 90 deg. between a burnishing action face 4 and the protruding direction of the holder section 2. When the shank 1 of the trowel file 3 is held and the burnishing action face 4 of the bar-like metal file 3 is slidingly reciprocated back and forth in contact with a recessed face (f) recessed perpendicularly from the surface of a die D, the metal file 3 can be moved over the whole surface of the recessed face (f), and the recessed face (f) can be thoroughly burnished because the angle θ2 between the holder section 2 and the metal file 3 is set to 90 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ironing tool provided with a metal file, paper or cloth file, a grindstone, and the like used for polishing a concave surface of a mold, a cast product, and various other objects to be polished.

[0002]

2. Description of the Related Art Conventionally, as a sanding file for polishing a concave surface of a mold, for example, as shown in FIG. 7, a bent portion (b) protrudes from the tip of a handle (a) at an obtuse angle (θ1). A flank type file made of a single piece of special steel material is known in which a plate-shaped file portion (c) extends from an end of the portion (b) at an obtuse angle (θ2).

[0003] However, the conventional Frank type sandpaper,
As shown in FIG. 7, when the file (c) is brought into contact with a concave surface (f) which is concave at a right angle from the surface of the mold (D) to perform polishing by reciprocating motion, the bent portion (b) is not shown. As described above, the immovable portion (d) of the file portion (c) is generated by hitting the upper edge of the concave portion, and this narrows the width of the reciprocating motion by the file.
As a result, there is a disadvantage that sufficient polishing cannot be performed.

In order to improve this, when the angle (θ2) formed by the bent portion (b) and the file portion (c) is set to 90 °,
The required reciprocating polishing movement is possible, but so-called chattering occurs during the reciprocating movement, making polishing difficult. This disadvantage is more remarkable when the bent portion (b) is lengthened in response to a deep concave portion.

[0005]

SUMMARY OF THE INVENTION The invention of claim 1 of the present application does not limit the width of the reciprocating movement of polishing of a concave surface in a metal file, and eliminates chatter even in polishing of a deep concave surface. With the task of

The invention of claim 2 of the present application is directed to an ironing tool provided with a polishing tool such as a short and small bar-shaped metal file, paper or cloth file, or a grindstone. It is an object to make it possible to replace a new abrasive tool or a different form of abrasive tool according to

According to a third aspect of the present invention, there is provided an ironing tool provided with a polishing tool such as a short and small bar-shaped metal file, paper or cloth file, a grindstone, and the like. It is an object of the present invention to enable a polishing reciprocating movement even if there are protrusions on the surface.

[0008]

According to a first aspect of the present invention, a plate-shaped holder having a wide width in the reciprocating direction of polishing is provided at the tip of a handle so as to project at an obtuse angle with the handle. At the tip of, a short and small bar-shaped metal file, in a state where the angle between the polishing action surface of the metal file and the projecting direction of the holder portion is at a right angle, fixed, proposed a concave surface polishing metal file,

According to a second aspect of the present invention, a plate-like holder having a wide width in the reciprocating direction of polishing is provided at the tip of the handle so as to project at an obtuse angle with the handle. For polishing a concave surface, a polishing tool such as a metal file, paper or cloth file, or a grindstone is detachably fixed in a state in which the angle between the polishing surface of the polishing tool and the direction in which the holder projects is perpendicular to the polishing tool. Suggest ironing tool,

According to a third aspect of the present invention, a plate-like holder having a wide width in the reciprocating direction of polishing is detachably attached to the tip of the handle so as to be detachable from the handle and rotatable so as to change the angle between the handle and the handle. At the desired angle position with the handle, and at the tip of the holder, a polishing tool such as a short bar-shaped metal file, paper or cloth file, a grindstone, the polishing surface of the polishing tool and the holder The present invention proposes an ironing tool for concave surface polishing, which is detachably fixed in a state where the angle between the projection and the projection is perpendicular.

The "small bar-shaped metal file" in the present invention includes various shapes such as a rectangular cross section, a circle, a semicircle, and a triangle depending on the application.

According to the second and third aspects of the present invention, the detachable fixing means between the holder portion or the holder and the polishing tool includes a press-fit fitting, a screw and a nut,
Various types such as those obtained by crimping of a cam and those obtained by a chuck are included.

[0013] In the third aspect of the present invention, the fixing means capable of freely tightening and loosening the handle and the holder at a desired angle position includes a screw and a nut, a pin or a claw and a receiving portion,
Various other types such as a clutch type are used. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0014]

FIG. 1 shows an embodiment of the first aspect of the present invention, wherein a wide plate-shaped holder portion (2) is formed at the tip of a handle (1) in the reciprocating direction of polishing with an angle formed with the (1). As an example, (θ1) is extended at an angle of 105 degrees, and a short bar-shaped metal file (3) made of a flat file having a rectangular cross section is attached to the tip of the holder part (2). The holder (2) is fixed by welding or the like at an angle (θ2) of 90 ° with the direction of projection of the holder (2).

The handle (1) of the iron file shown in FIG. 1 is gripped, and the polishing surface (4) of the bar-shaped metal file (3) is moved to the position shown in FIG.
As shown in (b), for example, when it comes into contact with a concave surface (f) that is concave at right angles from the surface of the mold (D) and slides back and forth,
Since the angle (θ2) between the holder part (2) and the metal file (3) is set to 90 degrees, the metal file (3) can move over the entire concave surface (f), whereby the required width of reciprocating motion by file is used. Can be secured, and the concave surface (f) can be sufficiently polished.

In the polishing reciprocating operation, the holder portion (2) is formed wide in the polishing reciprocating direction and the rigidity in that direction is increased, so that there is no chatter during the polishing reciprocating motion. Therefore, it is possible to lengthen the holder part (2) accordingly, in order to polish the concave surface of the deep concave part.

FIG. 2 shows an embodiment of the invention according to claim 2, wherein the plate-shaped holder portion (2a) and the polishing tool are detachably fixed.
Two press-fitting plates (5a) and (5a) having the same width as the holder (2a) are protruded at the tip of the holder (2a) in a bifurcated manner in parallel with the holder (2a). On the other hand, in this example, the press-fit plate (5) is attached to a surface of the short bar-shaped metal file (3a) made of a flat file, which is opposite to the polishing surface (4a).
a) and the press-fitting plates (5a) at positions corresponding to (5a).
It is slightly narrower than the thickness of (5a) (in this example, 20 μm
The grooves (6a) and (6a) are formed, and the press-fitting plates (5a) and (5a) are punched and fixed in the grooves (6a) and (6a). Other structures are substantially the same as those in FIG.

If the metal file (3c) is no longer cut as a result of continuing polishing with the ironing tool of FIG. 2, it is necessary to replace the metal file with a new one. When it is desired to replace the file with a file suitable for the form, etc., the press-fitting plates (5a) and (5a) of the holder part (2a) are removed from the grooves (6a) and (6a) of the metal file (3a). Withdrawal,
Next, a desired new metal file is fixed.

Instead of the fixing means shown in FIG. 2, there is also an example in which one press-fitting plate is protruded at the tip of the holder portion and one groove is provided in the metal file. The fixing means of this example is suitable for a metal file having a circular cross section, a semicircle, a triangle, or the like.

FIG. 3 shows still another embodiment of a detachable fixing means for the holder and the polishing tool. Screw holes (8b) and (8b) are respectively provided at the tip of the holder (2b). The two supporting plates (7b) and (7b) are provided in a bifurcated manner in a state parallel to the holder (2b), while in this example, a short bar-shaped metal file (3b) of a flat file. To
An engaging plate (9) having screw-through holes (10b) and (10b) with a thickness that can be inserted and removed between the receiving plates (7b) and (7b).
b) is vertically projected, and the locking plate (9b) is placed between the receiving plates (7b) and (7b), and the screws (11b) and (11
b) through the screw holes (8b) (10b), (8b) (10
b) and tighten the nuts (12b) and (12b).

As an embodiment of the present invention, in addition to FIGS. 2 and 3, a holder (2b) holding a cloth file (3b) and a grindstone (3e) shown in FIGS. ) Holding the holder (2e) having substantially the same structure as the holder (2e), and extending integrally from the tip of the handle as a holder.

FIG. 4 shows an embodiment of the invention according to claim 3, wherein the handle and the holder are rotatably supported and fixed rotatably, and the holder and the polishing tool are detachably fixed.
c) is formed in a bifurcated bearing portion (13c) having through holes (14c) and (14c), while the handle (1) is formed.
c) and a separate holder (2c), press-fit plates (5c) and (5c) protrude from the distal end of a rectangular plate, and have a through-hole extending in the longitudinal direction of the holder (2c) near the base end. Fifteen
c), and with the base end of the holder (2c) inserted between the bifurcated bearings (13c) of the handle (1c),
A screw (16c) is inserted through the through holes (14c), (14c) and the elongated hole (15c) to rotatably support the holder (2c), and a nut (17) is attached to the screw (16c).
The holder (2c) is fastened loosely by tightening (c).

A press-fit plate (5c) of the holder (2c),
(5c) is the groove (6) of the metal file (3c) as in FIG.
c) and (6c), the metal file is fixed detachably.

When the concave surface of the object to be polished is polished by the ironing tool shown in FIG. 4, if the surface of the object to be polished has a protrusion and hinders reciprocation of the handle (1c), the nut (1) is used.
7c) to loosen the angle (θ1) between the handle (1c) and the holder (2c) to widen the angle (θ1) between the handle (1c) and the holder (2c).
c) should be fastened. When there are no protrusions, the angle (θ1) is set close to 90 degrees, and the force for reciprocating the handle (1c) is effectively used for polishing.

In tightening the screw (16c) and the nut (17c), the holder (2c) is passed through its elongated hole (1).
By changing the length of protrusion of the holder (2c) from the screw (16c) to be shorter or longer in the length range of 5c), the safe position of the handle (1c) with respect to the protrusion is adjusted, and the concave surface (f) is formed. The length of the holder (2c) is properly adjusted in accordance with the depth of the holder.

FIG. 5 shows another embodiment of the present invention according to claim 3, wherein a cloth file is used as a polishing tool, and a holder is rotatably mounted on a forked bearing portion (13d) of a handle (1d). (2
d) are flanges (18d), (19) having the same width that are continuous from the upper side to the front side and then to the lower side of the substantially rectangular plate-shaped main body.
d) and a thick-flange (20d), and the thick-flange (20d) on the lower side is provided with a cloth file locking groove (21d) which is inclined from the rear surface to the lower side and bites into a wedge shape. On the upper surface of the flange (18d), a cloth file crimping groove (22d) that is recessed in a shallow arc shape is formed.
Two support arms (23) sandwiching the attachment groove (22d)
d) and (23d) are supported on the holder (2d) body via the collars (28d) and (28d) by the shaft (24d) via the shaft (24d). The eccentric shaft (26d) eccentrically and rotatably supports the pressure roll (25d) in a positional relationship facing the pressure groove (22d).
An operation lever (27d) protrudes from the outer peripheral surface of d).

In this case, when the maximum radius portion on the outer peripheral surface of the pressure roll (25d) faces the pressure groove (22d), the cloth file is pressed and held between the maximum radius portion and the pressure groove (22d), When the minimum radius portion faces the crimping groove (22d), the crimping on the cloth file is released.

The cloth file (3d) has the same width as the flanges (18d), (19d), and (20d) of the holder, and has a front end portion provided with the locking groove (2) of the lower flange (20d).
1d) to lock it by pushing it in.
0d) Rear surface, lower surface, front surface, then flange (19d)
It is attached while bending to the front surface of the flange and the upper surface of the flange (18d), and then is pulled backward through the pressure groove (22d) and the pressure roller (25d) facing the minimum radius portion. In this state, the pressure roller (25d) is rotated by operating the operation lever (27d) so that the maximum radius portion is engaged with the pressure groove (22d), and the cloth file (3d) is pressed and clamped.

The surface of the file (3d) in contact with the lower surface of the lower flange (20d) is used as a polishing surface (4d) to abut against the concave surface (f) for polishing.

When the sharpness of the polishing action surface (4d) is reduced, the pressing roll (25d) is rotated so that its minimum radius portion faces the pressing groove (22d), and the polishing is performed on the cloth file (3d). Release the crimp, and then use a cloth file (3
d), the leading end of the cloth file (3d) is pulled out from the locking groove (21d), cut off from the leading end by the length of the polishing surface (4d), and a new leading end is formed. It is locked in the locking groove (21d), and the cloth file (3d) is attached in the same manner as described above.

FIG. 6 shows still another embodiment of the invention according to claim 3, wherein a grinding wheel is used as a polishing tool.
e) A square cylindrical grindstone chuck (29e) is connected to the tip of the handle (1e) by welding to the tip of a plate-shaped holder body that is rotatably mounted on the tip of the handle (1e) with screws (16e) and nuts (17e). The chuck (29e) is provided with a collet (30e) provided with a slit (32e) on one side surface of a square cylinder having a square whetstone holding hole (31e) inside.
And fastening screws (33e) and (33e) which are screwed from one side to the other across the slit (32e) of the collet (30e) to narrow the holding hole (31e).

The grinding wheel (3e) is formed in a square bar, one end of which is inserted into the holding hole (31e), and the other end of the grinding stone (3e) is extended so that the fastening screws (33e), (33)
e) is fixed so that it can be loosened freely, and its protruding tip surface is directed at right angles to the direction of protrusion of the holder (2e) as the polishing surface (4e). Other structures are substantially the same as those in FIG.

In the examples of FIGS. 4, 5 and 6, each pattern (1
c), (1d), (1e) bifurcated bearings (13c),
(13d), (13e), screw (16c), (16
d), (16e) and nuts (17c), (17
d) and (17e) are designed to have the same shape and dimensions as each other, and the holders (2c), (2d) and (2e) are designed to have the same thickness of the main body.
c), (1d), (1e) with holders (2c), (2
Any of d) and (2e) can be freely replaced. According to this example, by changing the holder on the handle, it is possible to freely change between a metal file, a paper or cloth file, and a different kind of polishing tool of a grindstone.

[0034]

According to the first aspect of the present invention, since the angle between the short and small bar-shaped metal file and the projecting direction of the holder portion is made to be a right angle, the metal file is polished when the metal file is applied to the concave surface. The width of the reciprocating motion is not narrowed, so that the necessary width of the reciprocating motion can be ensured, and the concave surface can be sufficiently polished. Furthermore, since the holder part is formed in a wide plate shape in the polishing reciprocating direction, the steel property of the holder part during polishing reciprocating movement is improved, thereby eliminating the chatter during the conventional polishing reciprocating movement, which is effective. Polishing can be maintained, and the holder portion can be made longer to polish the concave surface of the deep concave portion without chatter.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the sharpness of the polishing tool is reduced, and when a new polishing tool is required, the size and shape of the concave surface to be polished are determined. When the appropriate polishing tool is required, when rough polishing or finish polishing is required, prepare only the appropriate polishing tool, and change the required polishing tool each time. The convenience that can respond to each of the above requirements is also obtained.

According to the third aspect of the present invention, in addition to the effect of the second aspect, when an operator grips the handle and performs reciprocating polishing, the protrusion on the surface of the object to be polished causes the reciprocating polishing. In the case where the movement is obstructed, the obstruction can be avoided by appropriately changing the angle between the handle and the holder.

[Brief description of the drawings]

FIG. 1 (a) is a partially omitted perspective view of an embodiment of the invention of claim 1; (B) It is a side view with a part omitted same as the above.

FIG. 2 (a) is a partially omitted oblique view of an embodiment of the invention of claim 2; (B) It is an AA line expanded sectional view of a figure.

FIG. 3 is a partially omitted oblique view of a separated state according to another embodiment of the invention of claim 2;

FIG. 4 (a) is a partially omitted side view of the embodiment of the third aspect of the present invention. It is a BB sectional drawing of (b) and (a) figure.

FIG. 5 (a) is a partially omitted side view of another embodiment of the third aspect of the present invention. (B) It is CC sectional view taken on the line of (a).

FIG. 6 (a) is a partially omitted side view of still another embodiment of the third aspect of the present invention. (B) It is DD sectional drawing of a figure. (C) A plan view of the holder. (D) A bottom view of the holder.

FIG. 7 is a side view of a conventional sanding file.

[Explanation of symbols]

 1, 1a, 1b, 1c, 1d, 1e Handle 2, 2a, 2b Holder portion 2c, 2d, 2e holder 3, 3a, 3b, 3c Short bar-shaped metal file 3d Cloth file 3e Grinding stone 4, 4a, 4b, 4c 4d, 4e Polishing surface 16c, 16d, 16e Screw 17c, 17d, 17e Nut

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 16, 2000 (2000.2.1
6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

As an embodiment of the present invention, a holder (2d) holding a cloth file (3d) and a grindstone (3e ) shown in FIG. 5 and FIG. ) Holding the holder (2e) having substantially the same structure as the holder (2e), and extending integrally from the tip of the handle as a holder.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

FIG. 5 shows another embodiment of the present invention according to claim 3, wherein a cloth file is used as a polishing tool, and a holder is rotatably mounted on a forked bearing portion (13d) of a handle (1d). (2
d) are flanges (18d), (19) having the same width that are continuous from the upper side to the front side and then to the lower side of the substantially rectangular plate-shaped main body.
d) and a thick-flange (20d), and the thick-flange (20d) on the lower side thereof is provided with a cloth file locking groove (21d) that is inclined from the rear surface to the lower side and bites into a wedge shape. On the upper surface of the flange (18d), a cloth file crimping groove (22d) that is recessed in a shallow arc shape is formed.
Across the pressure in groove (22 d) 2 pieces of the support arm (2
Each base end of 3d) and (23d) is supported on a holder (2d) body via a collar (28d) by a shaft (24d) via a collar (28d), and a crimping roll (2) is provided between the distal ends of both arms (23d) and (23d). 25d) is eccentrically and rotatably supported by an eccentric shaft (26d) in a positional relationship facing the crimping groove (22d), and an operation lever (27d) is mounted on the outer peripheral surface of the crimping roll (25d). It is protruding.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

[0034]

According to the first aspect of the present invention, since the angle between the short and small bar-shaped metal file and the projecting direction of the holder portion is made to be a right angle, the metal file is polished when the metal file is applied to the concave surface. The width of the reciprocating motion is not narrowed, so that the necessary width of the reciprocating motion can be ensured, and the concave surface can be sufficiently polished. Furthermore, since the holder part is formed in a wide plate shape in the polishing reciprocating direction, the holder part during polishing reciprocating movement is stabilized and its steel property is improved, thereby reducing the chatter during the conventional polishing reciprocating movement. Thus, effective polishing can be maintained, and a long holder can be used to polish a concave surface of a deep concave portion without chatter.

Claims (3)

[Claims] At the tip of a handle, a wide plate-like holder in the direction of reciprocating polishing is formed at an obtuse angle with the handle, and a short bar-shaped metal file is attached to the tip of the holder. A metal file for polishing a concave surface, which is fixed in a state where an angle between a polishing action surface of a file and a projecting direction of the holder portion is perpendicular. 2. A plate-shaped holder part having a wide width in the reciprocating direction of polishing is protruded at an end of a handle at an obtuse angle with the handle, and a short bar-shaped metal file, paper or cloth is provided at the end of the holder part. An iron polishing tool for concave surface polishing, wherein a polishing tool such as a file or a grindstone is detachably fixed in a state where an angle between a polishing action surface of the polishing tool and a projecting direction of the holder portion is perpendicular. 3. A flat plate-shaped holder having a wide width in the direction of reciprocating polishing is detachably attached to the tip of the handle so as to be detachable from the handle and rotatable so that the angle between the handle and the handle can be changed. Attach the tip of the holder with a sharpening tool such as a short bar-shaped metal file, paper or cloth file, or a grindstone. An ironing tool for polishing concave surfaces that is detachably fixed with its angle set to a right angle.