KR101723906B1 - Tool device for spot facing - Google Patents

Abstract

The present invention relates to a spot pacing tool, and more particularly, to a spot pacing tool of a tool device connected to various power generating devices for performing a spot pacing work, which is capable of easily and easily widening the diameter of a groove or hole in a work hole So that the tool gear of the tool unit can be detachably coupled to the tool gear, and furthermore, a departure preventing portion is further provided at the mutual contact portion so that the smooth and reliable drilling operation can be carried out And a plurality of blades for cutting are also individually replaceable.

Description

{TOOL DEVICE FOR SPOT FACING}

The present invention can be applied to various tooling devices to facilitate the spot pacing work for enlarging the diameter of the workpiece inserted in the grooves / holes of the pre-drilled and recessed workpieces, So as to have a structure in which it is prevented from coming off.

Generally, a drill is used to drill a hole for bolting to a workpiece during an assembling operation, and the drill is mainly used in a drilling machine. Alternatively, a hole can be drilled using a milling machine.

When a bolt is fastened to a hole completed by drilling by such a drilling machine, the bolt head or nut may come out higher than the surface, or it may be buried in the body of the workpiece, or a sharp portion may be removed, And the counter boring operation, which is an operation, is performed. Such spot facing operation is mainly performed by the counter bores.

In addition, the counter bore is provided with a cutting portion for cutting the workpiece and an angle portion for discharging a portion cut by the cutting portion, thereby performing spot facing.

However, since the conventional counter bore is formed integrally with the drill part, when the number of the blades of the counter bore is two or more, high precision is required, which makes the manufacture itself difficult. There is a problem that the whole must be replaced.

In addition, there is a problem that the tool portion formed with the blade is detached from the tool gear without being fixed securely, as described above, and development of a tool capable of detaching and attaching can be prevented.

Published Patent Application No. 10-2010-0043171 Published Utility Model Publication No. 20-2000-0016369 Published Patent Application No. 10-2003-0089638

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide a tool for a prong device used for spot pacing (or back pacing) In the present invention, not only is it easy to mount and detach the cutting blade (blade) in the tool, but also the tool to be mounted The present invention also provides a spot-facing tool having a structure that can be fastened and detached from a tool gear, but is securely fixed after being mounted and prevented from being separated from each other.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

In order to solve the above problems, the present invention provides a spot facing tool installed in a spot facing tool device (100) for performing a spot facing operation on a hole of a workpiece, A tool 60 detachably attached to the side tool gear 50 and rotated by the rotational force of the tool gear 50 to enlarge the diameter of the hole of the workpiece and allow the spot pacing work to proceed; A separation preventing portion 80 formed on an outer periphery of the tool 60 to prevent the tool 60 from being separated from the tool 60; And a control unit.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, in the case of a spot-facing tool installed in a spot-facing tooling apparatus, it is possible to individually replace plural blades for cutting.

Further, the present invention has an effect that a departure preventing portion is formed at a contact portion with a tool gear to prevent the tool from being separated from the tool gear after mounting.

In addition, since it is possible to attach and detach to any power generating device, practicality and efficiency are good, and only a part necessary for breakage or replacement can be replaced, thereby reducing the cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an embodiment of a spot-facing tool provided with a ballscrew-type release preventing portion according to the present invention;
2 is an operational view according to one embodiment of the departure prevention portion shown in Fig.
3 is a front view of another embodiment of a spot facing tool provided with an O-ring type anti-departure prevention part according to an embodiment of the present invention;
Fig. 4 is a bottom view of Fig. 3; Fig.
Figures 5 and 6 show a tooling apparatus equipped with a spot-facing tool of the invention.
7 is a front cross-sectional view of a tool device using a spot-facing tool provided with an O-ring type release preventing portion.
8 is a conceptual diagram of an embodiment showing a method of using a tool device equipped with a spot-facing tool according to the present invention.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Also, terms such as " first "and" second "are used herein for the purpose of the description and the appended claims, and are not intended to indicate or imply their relative importance or purpose.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

According to an embodiment of the present invention, there is provided a spot facing tool installed in a spot facing tool device 100 for performing a spot facing operation on a hole of a workpiece, A tool 60 installed to be detachably attached to the tool gear 50 and rotated by the rotational force of the tool gear 50 to widen the diameter of the hole of the workpiece and allow the spot pacing work to proceed; A separation preventing portion 80 formed on an outer periphery of the tool 60 to prevent the tool 60 from being separated from the tool 60; And a control unit.

The release preventing portion 80 includes an insertion hole 81 formed at a predetermined length from the outer periphery of the tool 60 toward the inside thereof; An elastic member 82 installed in the insertion hole 81; A release cushion 83 inserted in the insertion hole 81 and protruding from the outer circumference of the tool 60 locally by the elastic force of the elastic member 82; A locking groove 84 formed at the inner periphery of the tool gear 50 so that the protruding portion of the releasing preventing portion 83 is correspondingly inserted when the tool 60 is engaged with the tool gear 50; And a control unit.

The fastening groove 84 may be recessed in a semicircular shape corresponding to the protrusion of the release ring 83 or may be formed in a ring shape along the inner circumferential circumferential surface of the tool gear 50 do.

The release preventing portion 80 includes an O-ring engagement groove 85 formed at the outer periphery of the tool 60 to seal the gap between the tool 60 and the tool gear 50 when the tool 60 is engaged with the tool gear 50. An O-ring 86 fitted in the O-ring engagement groove 85; .

Further, the tool 60 is inserted into the center portion of the tool gear 50, and the coupling portion 62 is formed at the outer circumference of the tool gear 50 so that the coupling pin is engaged with the coupling pin 61. A supporting part 63 protruding from the bottom surface of the connecting part 62 at a predetermined angle to each other; A braid 64 detachably mounted on one surface of the support portion 63 and partially protruding outward of the support portion 63 so as to be capable of being spot-paced directly to the workpiece; A guiding portion 65 extending from the bottom surface of the supporting portion 63 and correspondingly inserted into the hole of the workpiece to guide the position of the tool 60 during spot pacing; .

In addition, the spot-facing tool device 100 includes a housing 10 which is detached / coupled up and down; A power shaft (20) for transmitting rotational power of the power generating device; The driving shaft 20 is provided inside the housing 10 and has one side protruding from one end surface of the housing 10 and connected to the power shaft 20. The driving shaft 20 transmits the rotational force transmitted from the power shaft 20 horizontally, (30); An idle gear 40 provided inside the housing 10 for engaging with the driving gear 30 and transmitting rotational force in the same direction; A tool gear (50) provided inside the housing (10) and engaged with the idle gear (40) to transmit rotational force; And a control unit.

A support bar 11 is further formed on the outer surface of the housing 10 so that the housing 10 is supported without being rotated along the power shaft 20 when the power shaft 20 rotates, And one side of the housing 11 is supported by the member to prevent the housing 10 from rotating.

A plurality of idle gears 40 are provided according to the length of the housing 10. The idle gears 40 are formed in an odd number of teeth including the driving gear 30 and the tool gear 50, And the tool gear 50 is rotatable in the same direction.

Hereinafter, a spot pacing tool according to a preferred embodiment will be described in detail with reference to FIGS. 1 to 8. FIG.

As shown, the spot-facing tool according to the present invention includes a tool 60 and a deviation preventing portion 80.

The tool 60 has a diameter of one end of a hole or a groove of a work (workpiece A) (a portion where a bolt and a nut are filled, a work portion H), a diameter of a head portion of a fastening member such as a bolt nut A spot facing tool 100 for performing a spot facing operation so as not to protrude to the outside of the workpiece, and a boring and chamfer counter for a back face hall The tool 60 is detachably mounted on the tool gear 50 at one end of the various tool devices and is provided with a hole or groove of the workpiece ) Is to expand the diameter of the work. The configuration of the tool device including such a tool 60 is described in detail below.

In other words, in the case of the tool 60, as shown in Fig. 8, after the tool 60 for the spot-pacing work is first fastened to the tool gear 50, When the portion of the tool gear 50 is inserted and then rotated, the diameter of the one end of the hole is widened, and when the various fastening members are inserted into the hole, the head portion of the bolt or the nut, (Work for widening the diameter of one end of the hole so that a head portion such as a bolt or a nut does not protrude to the outside of the hole of the workpiece)

The release preventing portion 80 is fixedly mounted without being easily detached from the tool gear 50 after the tool 60 is mounted on the tool gear 50 so that the rotational force can be smoothly transmitted from the tool gear 50 .

In the present invention, two embodiments are proposed as the departure prevention part 80 for this purpose.

As shown in FIGS. 1 to 2 and 7, the first embodiment includes a release spring 80 in the form of a ball spring. The release spring 80 includes an insertion hole 81, (82), a releasing chamber (83), and a fastening groove (84).

An insertion hole 81 is formed in the upper end periphery (more specifically, the outer periphery of the connection portion 62) of the tool 60 inserted into the tool gear 50, So that the elastic member 82 and the release spring 83 are sequentially inserted into the insertion hole 81. [

At this time, one side of the insertion hole 81 (the outer circumferential side of the tool 60) is formed with a narrow portion where the diameter gradually decreases, and is inserted into the insertion hole 81 by the elastic member 82, A portion of the outer periphery is locally protruded through the insertion hole 81 to the outer periphery of the tool 60 without being released to the outside of the insertion hole 81. [

In addition, the inner peripheral edge of the tool gear 50 into which the tool 60 is inserted is provided with a coupling groove 84 (corresponding to the outer peripheral edge of the tool 60) The breakaway portions 80 of the ball spring may be formed in the tool 60 in the form of a single or a plurality of holes or a plurality of holes. It may be recessed in a semicircular shape to correspond to the protrusion of the release reservoir 83 or may be recessed in the form of a ring along the inner peripheral circumferential surface of the tool gear 50. [

The separation preventing portion 80 of the second embodiment is provided at the outer periphery of the tool 60 so as to fit an O-ring 86 sealing the gap between the tool gear 50 and the tool gear 50 Ring engagement groove 85 in the circumferential direction.

In the following, a tool device (such as a spot-facing tool device 100) in which the aforementioned tool 60 described above is mounted will be described in detail with reference to Figs. 5 to 8. Fig.

The spot facing tool device 100 according to the present invention is a device for performing a spot facing operation for widening the diameter of one end of a hole or a hole formed in a workpiece. The apparatus 10 includes a housing 10, a power shaft 20, a drive gear 30 An idle gear 40, a tool gear 50, and a tool 60. As shown in Fig. (Of course, the spot facing tool device 100 of the present invention can be used easily when forming boring, chamfering and counter bores between workpiece clearances or between workpieces and workpieces.)

The housing 10 is divided into upper and lower housings 10 so that the upper and lower housings 10 are separated from each other. At this time, the upper and lower housings 10 are mutually connected and fixed by a coupling member such as a bolt or a nut.

A space portion (not shown) is formed in the housing 10 so that the driving gear 30, the idle gear 40 and the tool gear 50 are provided. And a through hole (not shown) is formed so that the power shaft 20 connected to the gear 30 is penetrated.

A through hole is formed in the other side surface of the housing 10 so that the tool 60 connected to the tool gear 50 passes through the through hole.

A support bar 11 is further formed on the outer surface of the housing 10 so that the housing 10 is supported without being rotated along the power shaft 20 when the power shaft 20 rotates, One side of the housing 11 is supported by a fixed device such as a member or a power generator to prevent the housing 10 from rotating.

The power shaft 20 is connected to the power generating device to transmit rotational power of the power generating device (not shown). At this time, the power generation device corresponds to a device generating a rotational force such as a drill machine (or a milling machine).

The power shaft 20 has an insertion groove 21 formed at one end thereof to insert one side of the driving gear 30 and a bolt, (30).

The other side of the power shaft 20 is connected to the power generator. The spot-facing tool 100 may be used up to a long distance depending on the length of the other side of the power shaft 20.

The driving gear 30 is provided inside the housing 10 and has an end protruding from one end face of the housing 10 and is fixed to the insertion groove 21 of the power shaft 20, 20) to transmit in a horizontal direction (direction perpendicular to the power shaft 20).

Here, the drive gear 30 is provided inside the housing 10 at one side, and the other side is protruded to the outside of the housing 10 and connected to the power shaft 20. A plurality of bearings 70 are installed on the outer surface of the drive gear 30 to prevent the bearings 70 from being damaged due to friction with the housing 10.

The idle gear 40 is provided inside the housing 10 and is engaged with the driving gear 30 in series to transmit rotational force in the same direction.

A plurality of idle gears 40 are provided in accordance with the length of the housing 10. The idle gear 40 is rotatably supported by the driving gear 30 and the tool gear 50 such that the driving gear 30 and the tool gear 50 can rotate in the same direction. ) Are formed in an odd number. That is, the total quantity of the drive gear 30, the tool gear 50, and the idle gear 40 is formed to be an odd number (3, 5, 7 .....).

The tool gear 50 is provided inside the housing 10 and is engaged with the idle gear 40 in series to transmit rotational force to the tool 60.

A hole (not shown) is formed at the center of the tool gear 50, and the tool 60 is inserted into the hole.

A separate bearing 70 is installed on the outer surface of the idle gear 40 and the tool gear 50 in order to prevent breakage or the like due to friction with the housing 10 during rotation.

The tool 60 is detachably attached to the center hole of the tool gear 50 so as to protrude from the outside of the housing 10 and is rotatably supported by the tool 60 are rotated to perform spot-pacing work on the holes of the workpiece.

The tool 60 includes a connection portion 62, a support portion 63, a braid 64, and a guide portion 65.

As described above, the connection preventing portion 80 is formed on the outer periphery of the connecting portion 62, so that the tool gear 50 ), But also has a structure in which the tool gear 50 is prevented from being separated from the tool gear 50 after mounting. In addition, the coupling portion 62 is formed with a coupling groove 61 at the outer periphery thereof so as to be coupled with a coupling pin (not shown) used when the coupling portion 62 is engaged with the tool gear 50, Can be detachably attached to the tool gear (50), but are prevented from being separated from each other after fastening.

The supporting portion 63 is formed to extend from the lower end of the connecting portion 62. The supporting portion 63 has a shape in which a plurality of or a plurality of circular cross-sectional bodies having a predetermined thickness are divided into a plurality of portions, The supporting portions 63 are not in contact with each other but spaced apart in the circumferential direction, and have a trapezoidal or fan-shaped cross-section.

The braid 64 is coupled to one surface of each of the support portions 63 so that the braid 64 can be mounted on the same surface of each support portion 63 in accordance with the rotating direction of the tool 60. The braid 64 is detachably attached to the support portion 63 by a separate fixing member 66 (bolt, nut or the like) so that the braid 64 provided on each support portion 63 is separately damaged or worn To be replaced. When the tool 60 is rotated on the support 63, the braid 64 is formed so as to protrude toward the outer periphery and the bottom of the support 63 when the tool 60 is mounted on one side of the support 63. Thus, And the portion of the braid 64 protruding from the bottom surface, the spot pacing operation in which the diameter of the hole or groove is widened can be performed. The braid 64 and the tool 60 are formed in various shapes when spot-peening the hole of the workpiece, and are convenient and practical because they can be used in accordance with work or shape.

The guide portion 65 guides the tool 60 so that the tool 60 can be accurately positioned in the workpiece hole when the portion of the tool 60 is positioned corresponding to the hole of the workpiece for spot- When the tool 60 is rotated in a state in which the cylindrical guide portion 65 protruding from the bottom surface of the guide portion 65 is inserted into the workpiece hole portion, the bottom surface and the side surface of the hole, in which the guide portion 65 is inserted, 64 are cut, a groove having a diameter larger than that of the pre-drilled hole can be formed at one end of the hole.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will readily occur to those skilled in the art without departing from the spirit and scope of the invention. Therefore, it should be understood that the disclosed embodiments are to be considered in an illustrative rather than a restrictive sense, and that the true scope of the invention is indicated by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof, .

10: housing 11: support bar
20: Power shaft 21: Insert groove
30: driving gear 40: idle gear
50: Tool Gear 60: Tool
61: coupling groove 62:
63: Support part 64: Braid
65: guide portion 66: fixing member
70: Bearing 80:
81: insertion hole 82: elastic member
83: Disengaging chamber 84: Fastening groove
85: O-ring coupling groove 86: Insertion hole
100: Spot-facing tooling device

Claims (8)

A spot facing tool installed in a spot facing tooling (100) for spot facing work in a hole in a workpiece,
Is detachably attached to one end tool gear (50) of the spot facing tool device (100) and rotated by the rotational force of the tool gear (50), thereby widening the hole diameter of the workpiece A tool 60;
And an escape preventing portion 80 formed on an outer periphery of the tool 60 to prevent the tool 60 from being separated from the tool 60,
The tool 60 has a diameter of one end of a hole or a groove of the workpiece so that the head portion of the fastening member to which the fastening member is fastened is fastened to the fastening member, The tool 60 is detachably attached to the tool gear 50 at one end of the spot-facing tool 100 so as to receive a rotational force to receive the work The work is to expand the diameter of the target site,
The tool 60 includes a coupling portion 62 inserted into a center portion of the tool gear 50 and formed with an engaging groove 61 for coupling the coupling pin to the outer periphery of the coupling portion 62, A supporting part 63 protruding from the supporting part 63 at a predetermined angle and a part of the supporting part 63 protruding outside of the supporting part 63 so as to be directly faced to the workpiece And a guide portion 65 which is extended and protruded from the bottom surface of the support portion 63 to be inserted into the hole of the workpiece to guide the position of the tool 60 during spot pacing,
The release preventing portion 80 includes an insertion hole 81 formed at a predetermined length from the outer periphery of the tool 60 to a predetermined length, an elastic member 82 installed in the insertion hole 81, (83) protruding from the outer periphery of the tool (60) locally by the resilience of the elastic member (82) inserted in the tool gear (81) And a fastening groove 84 formed at the inner periphery of the tool gear 50 so that the protruding portion of the release retainer 83 is correspondingly inserted,
An O-ring engagement groove 85 formed at the outer periphery of the tool 60 for sealing the gap between the tool 60 and the tool gear 50 or sealing the gap between the tool 60 and the tool gear 50, And an O-ring 86 to be fitted,
The coupling groove 84 is recessed in a semicircular shape corresponding to the protruding portion of the releasing rest 83 or is formed in a ring shape along the inner circumferential circumferential surface of the tool gear 50,
The spot facing tool device 100 includes a housing 10 separated and coupled to the top and the bottom of the housing 10, a power shaft 20 for transmitting rotational power of the power generator, A drive gear 30 protruding from one end surface of the housing 10 and connected to the power shaft 20 to horizontally transmit the rotational force transmitted from the power shaft 20, An idle gear 40 that is engaged with the driving gear 30 and transmits a rotational force in the same direction; and an idle gear 40 which is provided in the housing 10 and meshes with the idle gear 40, And a tool gear (50)
A supporting bar 11 is further formed on the outer surface of the housing 10 so that the housing 10 is supported without being rotated along the power shaft 20 when the power shaft 20 rotates, Is supported on the member so as to prevent rotation of the housing 10,
A plurality of idle gears 40 are provided according to the length of the housing 10 and the number of the idle gears 40 including the driving gear 30 and the tool gear 50 is an odd number, (50) are rotatable in the same direction.
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