JP3188346U - Deburring tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deburring tool which makes it difficult to damage a machined product. SOLUTION: In a deburring tool having a round bar shape and provided with a blade portion 3 on the tip side and scraping burrs of a machined product on the peripheral surface of the rotating blade portion, there is no blade on the tip side of the blade portion. The bladeless end portion 4 is provided, the bladeless end portion is formed into a rotating body shape concentric with the blade portion, the bladeless end portion and the peripheral surface of the blade portion are smoothly connected, and the outer surface of the bladeless end portion is made a smooth surface. ing. Further, the bladeless end portion has a tapered shape, and the diameter is made equal to or less than the diameter of the tip end portion of the blade portion. The blade has a tapered cone shape, and the bladeless end has a tapered cone shape with a rounded apex or a tapered cone shape with a rounded top edge, and the maximum diameter is the minimum diameter of the blade. It is the same. In addition, it is used for manual work by attaching it to a hand-held portable rotary drive tool and using it for manual deburring. [Selection diagram] Fig. 1

Description

  The present invention relates to a deburring tool used for removing burrs from a machined product.

  A deburring tool is also referred to as a rotary burr. The burr of machined products is also called burr, spatula, burr, or cast-in. The deburring tool has a round bar shape, and a blade portion is provided on the distal end side and a handle portion is provided on the opposite proximal end side.

  When deburring a machined product manually, the deburring tool is mounted on a hand-held portable rotary drive such as an electric drill or air drill. The deburring tool inserts and holds the handle portion into the chuck at the front end of the rotary drive tool, and projects the blade portion forward of the chuck. An operator holds the rotary drive by hand and moves it toward the machined product. Then, the rotating deburring tool on the front side of the rotary drive tool contacts the burr of the machined product with the peripheral surface of the blade, and scrapes the burr from the machined product with the rotating blade. When burrs are generated along the edges and ridges of the machined product, the rotating deburring tool on the front side of the rotary drive is moved along the edges and ridges of the machined product. While the rotating deburring tool is moved, the burrs on the edges and ridges of the machined product are scraped off on the peripheral surface of the blade.

Japanese Utility Model Publication No. 5-307 Japanese Utility Model Publication No. 63-133957

[Task]
When deburring a machined product, an operator may accidentally contact the blade portion of the deburring tool with a non-burred portion of the machined product. If the blade portion of the deburring tool that is rotating or stopped contacts a non-burred portion of the machined product, the machined product is damaged.
In particular, the tip of the deburring tool is also a blade portion. If the tip of the deburring tool, that is, the tip of the blade, for example, the tip or corner, scratches the surface of the machined product, it becomes a scratch. A machined product with scratches is a defective product.
It is desired that the deburring tool is difficult to damage the machined product.

[Idea]
The deburring tool removes burrs from the machined product on the peripheral surface of the blade. Do not scrape burrs at the tip.
Therefore, the tip of the deburring tool, that is, the tip of the blade portion is made to be a bladeless end portion by removing the blade, and to have a smooth outer surface by removing the tip and corner.
In other words, the deburring tool is provided with a bladeless end on the tip side of the blade, the bladeless end is formed into a rotating body concentric with the blade, and the peripheral surface of the bladeless end and the peripheral surface of the blade are formed. It was decided to connect smoothly and make the outer surface of the edgeless edge smooth. The bladeless end with a smooth outer surface is less likely to be scratched even when it comes into contact with a machined product.

  In addition, the bladeless end portion is tapered, and the diameter is made equal to or smaller than the diameter of the tip of the blade portion. Such a bladeless end portion is unlikely to contact the machined product.

1. In a deburring tool that has a round bar shape and is provided with a blade on the tip side, and removes burrs of machined products on the peripheral surface of the rotating blade.
A bladeless end without a blade is provided on the tip side of the blade, the bladeless end is concentric with the blade, and the bladeless end and the peripheral surface of the blade are smoothly connected to each other. The outer surface of the part is a smooth surface.
2. In the deburring tool of 1 above,
The bladeless end is tapered and has a diameter that is less than or equal to the diameter of the tip of the blade.
3. In the above deburring tool 1 or 2,
The blade part has a tapered truncated cone shape,
The bladeless end portion has a tapered conical shape with a rounded apex or a tapered truncated cone shape with a rounded peripheral edge of the top surface, and the maximum diameter is the same as the minimum diameter of the blade portion.
4). In the above deburring tool 1, 2 or 3,
The deburring tool is characterized in that it is used for manual deburring by attaching it to a hand-held portable rotary drive.

  The deburring tool does not easily damage the machined product even when the non-blade end portion having a smooth outer surface contacts the machined product.

The side view of the deburring tool in embodiment of this invention. The enlarged front view of the deburring tool. The side view which shows the state with which the deburring tool was mounted | worn with the hand-held portable rotation drive tool.

  As shown in FIGS. 1 and 2, the deburring tool according to the embodiment has a round bar shape, and the handle portion 1, the connecting portion 2, the blade portion 3 and the bladeless end portion 4 are continuously formed from the base end to the tip end. Provided. The connecting portion 2 connects the handle portion 1 and the blade portion 3 made of different materials. The blade part 3 and the non-blade end part 4 are made of the same material. In the embodiment, the deburring tool has a total length of about 50 mm and a maximum diameter of about 6 mm.

  The handle 1 has a round bar shape with a uniform diameter. And it is made of alloy steel. The base end of the handle 1 constitutes the base end of the deburring tool.

  The connecting part 2 has a round bar shape with a two-stage diameter, and the small diameter part and the large diameter part are concentric with the handle part 1. The small diameter portion is arranged on the handle portion 1 side and has a larger diameter than the handle portion 1.

  The blade portion 3 has a tapered truncated cone shape, and a plurality of spiral grooves are formed in a spiral shape by forming a number of spiral grooves on the circumferential surface of the cone surface. And it is made of cemented carbide tungsten carbide. The diameter of the base end of the blade part 3 and the maximum diameter of the blade part 3 are the same as the diameter of the large diameter part of the connecting part 2. The blade portion 3 is concentric with the handle portion 1 and the connecting portion 2.

  The bladeless end portion 4 has a tapered conical shape with a vertex rounded into a spherical shape, and smoothly connects the spherical outer surface and the conical surface. The bladeless end 4 has a rotating body shape concentric with the blade 3. The outer surface of the bladeless end 4 is a smooth curved surface. The diameter of the base end of the bladeless end 4 and the maximum diameter of the bladeless end 4 are the same as the diameter of the tip of the blade 3 and the minimum diameter of the blade 3. The conical surface of the peripheral surface of the bladeless end portion 4 has the same inclination angle as the conical surface of the peripheral surface of the blade portion 3. The peripheral surface of the bladeless end portion 4 is smoothly connected to the peripheral surface of the blade portion 3. The bladeless end 4 is made of the same cemented carbide tungsten carbide as the blade 3. The tip of the bladeless end portion 4 constitutes the tip of the deburring tool.

  As shown in FIG. 3, the hand-held portable rotary driving tool to which the deburring tools 1 to 4 are attached is an electric drill. The electric drill incorporates an electric motor in the main body 11. The main body 11 has a chuck 12 attached to the front end and a grip 13 provided on the lower side. The grip 13 has a built-in storage battery, and a push button switch 14 is arranged on the upper front side. The operator holds the electric drills 11 to 14 by holding the grip portion 13 with one hand, and presses the push button switch 14 with the finger of the one hand. Then, electric power is supplied from the storage battery to the electric motor, the electric motor is driven to rotate, and the chuck 12 rotates. The deburring tools 1 to 4 attached to the chuck 12 rotate.

  When the deburring of the machined product is performed manually, the deburring tools 1 to 4 are attached to the electric drills 11 to 14. The deburring tool inserts and holds the handle 1 in the chuck 12 of the electric drill, and projects the bladeless end 4 and the blade 3 to the front of the chuck 12.

  The operator holds the electric drills 11 to 14 by hand and moves them toward the machined product. The rotating deburring tool on the front side of the electric drill contacts the burr of the machined product with the peripheral surface of the blade 3, and the rotating blade 3 removes the burr from the machined product. When burrs are generated along the edges and ridges of the machined product, the rotating deburring tools 1 to 4 are moved along the edges and ridges of the machined product. While moving the deburring tools 1 to 4, burrs on the edges and ridges of the machined product are scraped off on the peripheral surface of the rotating blade 3.

If an operator accidentally contacts the tip part and the no-blade end part 4 of the deburring tools 1 to 4 with the machined product, the no-blade end part 4 has no blade, no sharp edges, no corners, and an outer surface. Since the surface is smooth, the machined product is hardly damaged. Even if the bladeless end 4 scratches the surface of the machined product, scratches are unlikely to occur.
Even if the deburring tools 1 to 4 are rotating or stopped, it is difficult to damage the machined product.

[Modification]
The present invention is not limited to the above embodiment. The following modifications are exemplified.
1. In the above-described embodiment, the bladeless end portion 4 has a tapered conical shape with the apex rounded into a spherical shape, but has a hemispherical shape, a semi-ellipsoidal shape, a rotating parabolic shape, or other rotating body shape. To do.
2. In said embodiment, although the smooth outer surface of the bladeless edge part 4 is comprised only with the curved surface, it comprises with a curved surface and a plane. For example, the bladeless end portion 4 is formed in a tapered truncated cone shape with the peripheral edge of the top surface rounded, the central portion of the top surface is a flat surface, and the peripheral edge portion and the peripheral surface of the top surface are curved.
3. In the above embodiment, the blade portion 3 has a tapered truncated cone shape, but the tip portion and the proximal end portion are thinner than the center portion, a round shape with a uniform diameter, a thick truncated cone shape, or other Rotating body shape.
4). In the above embodiment, the hand-held portable rotary drive tool is a storage battery built-in type electric drill 11 to 14, but it is an electric drill that supplies electricity from the outside. Or use an air drill.
5. In the above embodiment, the deburring tools 1 to 4 are mounted on a hand-held portable rotary drive 11 to 14 and used for manual deburring. However, the deburring tools 1 to 4 are mounted on an automatic machine such as a robot. Used for deburring work.

DESCRIPTION OF SYMBOLS 1-4 Deburring tool 1 Handle part 2 Connecting part 3 Blade part 4 Bladeless edge part 11-14 Hand-held portable rotary drive, electric drill 11 Main body 12 Chuck 13 Grasping part 14 Pushbutton switch

Claims (4)

In a deburring tool that has a round bar shape and is provided with a blade on the tip side, and removes burrs of machined products on the peripheral surface of the rotating blade.
A bladeless end without a blade is provided on the tip side of the blade, the bladeless end is concentric with the blade, and the bladeless end and the peripheral surface of the blade are smoothly connected to each other. Deburring tool characterized by having a smooth outer surface.   2. The deburring tool according to claim 1, wherein the bladeless end portion is tapered and has a diameter equal to or less than a diameter of a tip end of the blade portion. The blade part has a tapered truncated cone shape,
2. The bladeless end portion has a tapered conical shape with a rounded apex or a tapered truncated cone shape with a rounded peripheral edge of the top surface, and the maximum diameter is the same as the minimum diameter of the blade portion. Or the deburring tool of 2.   The deburring tool according to claim 1, 2 or 3, wherein the deburring tool is used for manual deburring by being mounted on a hand-held portable rotary drive.

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