KR102185015B1 - Automatic polishing apparatus for drill - Google Patents

Abstract

The present invention relates to a drill polishing apparatus for simultaneous polishing of a cutting surface and thinning.
In the present invention, in a drill comprising two cutting surfaces and discharge grooves formed on both sides of the blade end of the tip, and cutting edges are formed at the ends of the cutting surface,
The cutting surface 10 of the drill D is repeated by inserting the drill D into the drill fixing part provided on one side of the body 1 of the drill polishing apparatus so that the position is fixed. It is characterized in that a thinning groove (20) is formed at the tip of the drill (D) by grinding by arc movement and repeated arc movement of the thinning blade (22).
The present invention has the advantage of being able to process the cutting surface and the thinning processing through a continuous repeated operation at the same time when processing the tip cutting surface of the drill.

Description

Drill polishing apparatus for simultaneous polishing of cutting surface and thinning {Automatic polishing apparatus for drill}

The present invention relates to a drill polishing apparatus, and more particularly, to a drill polishing apparatus for simultaneous polishing of a cutting surface and thinning for effectively forming both cutting surfaces and thinnings centered on the tip of a drill.

In general, a drill is a cutting tool used for drilling a hole in the surface of a work, and has two cutting edges at its tip, and chips by cutting are discharged to the rear through a discharge groove formed in the main body.

That is, the edge of the blade protrudes at the center of the front end of the main body, two cutting surfaces and discharge grooves for guiding the cutting chips are formed on both sides of the edge of the blade, and the end of the cutting surface is for cutting grooves or holes. The cutting edge is formed.

Drills with oil holes, gun drills, core drills, embedded drills, cell drills, spade drills, center hole drills, stepped drills, twist drills, flat drills, taper pin drills, and three-groove drills. There are various types of drills depending on the application, such as, half-moon drill, welding drill, etc.

Such a drill is usually used by being mounted on a drill machine through a drill chuck, and when the drill rotates according to the driving means, it moves while forming a groove or hole in the work piece.

The tip of the drill is formed at the center of the tip of the drill, and during operation according to the operation, the center of the cutting edge is aligned with the center of the hole formed in the work, and when rotating, the cutting edge cuts the work to form a groove or hole, and The cutting edge is formed in a helical shape along the circumferential surface of the drill to form a constant inner diameter of a groove or hole of the workpiece when rotated.

When the workpiece is processed as described above, the cutting edge is worn and accordingly, the cutting surface and the cutting edge are processed and used. In addition, thinning is formed on both sides based on the center of the tip of the drill so that the processing of the drill is stably performed.

However, as described above, the cutting edge and thinning are processed every time a wear phenomenon occurs, and there has been a problem in that the working time is required for processing and the work stability is deteriorated due to the need to be processed by hand.

Conventionally, a drill grinder for polishing a drill tip angle has been proposed by the inventor of the present application.

This includes a plate whose lower end is hinged to one side of a polishing machine body having a grinding wheel rotated by a motor drive unit, a rotating member hinged to rotate up and down at a predetermined position on the upper side of the plate, and an upper surface of the rotating member. A drill tip angle primary polishing machine comprising a rotating member coupled to rotate left and right, a drill jig for pressing and fixing the drill, and a restraining member for pressing and restricting the drill jig, a plate fixed to the other side of the polishing machine body, the A drill comprising a fixing member that is horizontally fixed to the upper surface of the plate, a rotating member that is coupled to rotate left and right on one side of the upper surface of the fixing member, a drill jig for pressing and fixing the drill, and a restraining member for pressing and restraining the drill jig It is composed of the tip angle secondary polishing machine.

According to the above configuration, the grinding work of the drill tip angle and the drill center cutting edge can be polished quickly, accurately and easily, and it is possible to improve the precision by preventing interference between both ends of the tip angle during work. There has been a problem that takes a lot of work time.

In addition, there have been disadvantages in that cutting edge processing according to cutting surface processing and thinning polishing to increase cutting efficiency are not performed stably.

KR Utility Model Registration No. 20-0393893 Announcement Date 2005. 08. 25 KR Utility Model Registration No. 20-0394026 Announcement Date 2005. 08. 25

Accordingly, the present inventors conceived from the idea to solve the technical limitations and problems in forming thinning on both sides of the center of the blade and the cutting edge formed on the drill cutting surface in the existing drill polishing apparatus in consideration of the above matters. The present invention was invented as a result of continuous research with great effort in order to be able to easily process the cutting surface and thinning of the drill.

Accordingly, the technical problem and object to be solved by the present invention is to enable thinning processing to be performed through continuous operation at the same time as processing the tip cutting surface of the drill.

Here, the technical problems and objects to be solved by the present invention are not limited to the technical problems and objectives for simultaneously and continuously processing the cutting surface and thinning of the drill mentioned above, and other technical problems and objects not mentioned are Those skilled in the art will be able to clearly understand from the following description.

To achieve the above object,

In the present invention, in a drill comprising two cutting surfaces and discharge grooves formed on both sides based on the blade tip of the tip, and cutting edges are formed at the ends of the cutting surface,

The cutting surface of the drill is polished by repeated arc movement of the grinding blade while the drill is inserted into the drill fixing part provided on one side of the body of the drill grinding device so that the position is fixed, and by repeated arc movement of the thinning blade. The thinning groove is formed at the tip of the drill.

The polishing blade is formed in a circular plate shape and has an inclined inclination angle at which the outer diameter of the polishing surface for processing the cutting surface of the drill is gradually reduced downward around the rim, and the polishing blade transfer bar provided in the body The grinding blade is continuously repeatedly conveyed in an arc shape to process the cutting surface of the drill;

It is preferable that the polishing blade transfer bar has one side fixed to the body to form a rotation center point, and the polishing blade is rotatably fixed to the other side so that the polishing blade moves in an arc shape around the rotation center point. .

In addition, the rotational center point of the grinding blade transfer bar is moved with respect to the body through a position converting means so that the cutting angle of the cutting surface is adjusted,

The position converting means is provided with a guide plate formed in the body and formed with a guide groove to guide a central axis constituting the rotational center point, and a locking hole for fixing the central axis to a selected position of the guide groove.

The grinding blade transfer bar is a first driving body that is fixed to one side of the body and rotates the cam plate around the drive shaft when the motor rotates, one end is rotatably linked to the end of the cam plate, and the other end transfers the grinding blade. It is provided that it is linked to the bar further comprises an interlocking bar for connecting the grinding blade transfer bar to continuously reciprocate a predetermined section based on the rotation center point.

The rotation of the polishing blade on one side of the polishing blade transfer bar includes a first pulley rotatably installed with a motor driving force on one side of the body, a second pulley rotatably installed at a rotation center of the polishing blade transfer bar, the To rotate by a third pulley installed at the center of rotation to rotate the polishing blade of the polishing blade transfer bar, an interlock belt connecting the first pulley and the second pulley, and a driving pulley connecting the second pulley and the third pulley. do.

The thinning blade is formed in a disk shape and has a shape in which the thinning end for processing the blade end protrudes at the center of the circumference so that the thinning surface is formed obliquely on the upper and lower sides of the thinning end,

The thinning blade is coupled to the other side of a rotational linking bar rotatably coupled to the body with a rotational center point forming a rotational center on one side of the body, and rotates according to a motor drive so as to continuously reciprocate for a predetermined period through an interlocking means. .

The interlocking means is rotatably coupled to a contact interlocking member provided on one side of the rotation interlocking bar and a drive shaft for fixing the abrasive blade in the abrasive blade transfer bar, and a bearing body in which the contact interlocking member slides into contact with the outside. , An elastic restoring body that has an elastic restoring force and is connected to the other side of the rotation linkage bar and the body so that the contact linkage member resiliently maintains a close contact with the bearing body, and rotation of the rotation linkage bar positioned in the body It includes a stopper that controls to reciprocate only this certain section.

The present invention has the advantage of being able to process the cutting surface and the thinning processing through a continuous repeated operation at the same time when processing the tip cutting surface of the drill.

1 is a plan configuration diagram of a drill polishing apparatus for simultaneous polishing of a cutting surface and thinning according to the present invention;
2 is an operating state diagram representing the cutting surface machining operation in FIG. 1;
3 is a schematic configuration diagram representing the cutting surface processing of FIG. 2;
4 is an operating state diagram representing the thinning processing operation in FIG. 1;
5 is a schematic configuration diagram representing the formation of thinning grooves of FIG. 4;
6 is a plan view showing a process of contacting a polishing blade and a thinning blade in FIG. 1;
7 is a front configuration diagram of FIG. 6.

Hereinafter, preferred embodiments according to the present invention will be described in more detail with reference to the accompanying drawings, and prior to describing the present invention, terms to be described below are defined in consideration of functions in the present invention. It is stated that a concept conforming to the idea and interpreted as a commonly recognized or commonly recognized meaning in the art. In addition, when it is determined that a detailed description of known functions or configurations related to the present invention may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Here, the accompanying drawings are partially exaggerated or simplified for convenience and clarity of explanation and understanding of the configuration and operation of the technology, and it is understood that each component does not exactly correspond to the actual size and shape.

In addition, in the present specification, the term and/or means a combination of a plurality of related items or any item among a plurality of related items. Unless there is no other component is not excluded, it means that other components can be further included.

That is, it means that the features, numbers, steps, actions, components, parts, or combinations of these described in the present specification exist, and one or more other features or numbers, step-action components, parts, or a combination thereof It is to be understood that they do not exclude the possibility of their existence or addition.

In addition, terms such as top, bottom, top, bottom, or top, bottom, top, and bottom are used for convenience to distinguish the relative positions of each component. For example, the upper part on the drawing may be named and referred to as the upper part and the lower part as the lower part.

The present invention is for forming a thinning groove 20 on both sides of the center of the blade tip for processing the cutting surface 10 formed at the tip of the drill (D) as shown in Figs. It relates to a drill grinding device.

The drill (D), as shown in Figs. 3 and 5, has two cutting surfaces 10 and discharge grooves formed on both sides based on the blade end of the tip, and the end of the cutting surface 10 It is made by forming a cutting edge.

In use, it is coupled to a drill chuck that fixes the drill and rotates according to the rotational motion of the drill machine, so that the cutting surface 10 forms a groove or hole on the surface of the object.

The thinning groove (20, thinning) refers to grinding a part of both blade ends in an arc shape based on the axis center of the drill (D) in order to increase cutting efficiency in the process of forming a groove or hole of the drill (D). .

In this way, the drill (D) forms both cutting surfaces 10 and thinning grooves 20 in order to secure workability. When processing the cutting surface 10, the drill fixing part for fixing the drill D is With the drill D being fixed, the cutting surface 10 of the drill D may be polished by an arc-shaped movement of the cutting polishing 12. When polishing the thinning groove 20, a thinning blade ( 22) to form the thinning groove 20 at the blade end of the drill D. (See FIGS. 3 and 5)

The polishing blade 12 for polishing the cutting surface 10 has a circular plate shape, and the polishing surface for processing the cutting surface 10 of the drill D around the rim is inclined in which the outer diameter is gradually reduced downward. It is preferable to apply the one formed with an inclination angle, and it is conveyed while continuously repeating the polishing blade 12 in an arc shape through the polishing blade conveying bar 100 provided in the body, so that the cutting surface 10 of the drill D ) Will be processed.

The polishing blade transfer bar 100 has one side fixed to the body 1 to form a rotation center point 101, and the polishing blade 12 is rotatably fixed to the other side, and the rotation center point 101 is the center. As a result, when rotating, the polishing blade 12 moves in an arc shape.

The grinding blade transfer bar 100 is fixed rotatably through a central axis having one end forming a rotation center point 101 on the body 1 in a bar shape, and the grinding blade 12 on the other side is coupled to a motor drive shaft And it is driven according to the switching operation.

Here, the rotational center point 101 of the grinding blade transfer bar 100 is moved with respect to the body 1 through a position converting means so that the cutting angle of the cutting surface 10 is adjusted.

The position converting means is formed in the body (1) so that the guide plate having an arc-shaped guide groove to guide the central axis forming the rotation center point 121, and the central axis is fixed to a selected position of the guide groove. It is possible to apply one consisting of a locking hole.

Accordingly, the rotational center point 101 of the grinding blade transfer bar 100 is moved with respect to the body 1 through a position converting means, so that the cutting angle of the cutting surface 10 is adjusted.

The grinding blade transfer bar 100 rotates based on a rotation center point 101 coupled to the body 1, and at this time, the interlocking bar 130 connected to the grinding edge transfer bar 100 One drive unit 110 continuously and repeatedly moves only a certain section.

That is, the grinding blade transfer bar 100 is fixed to one side of the body 1 to move the cam plate 112 circularly around the drive shaft when the motor rotates, and one end of the cam plate The link 121 is rotatably connected to the end of 112 and the other end is connected to the grinding blade transfer bar 100 with the link 122 so that the grinding blade transfer bar 100 is based on the rotation center point 101 It is configured to include an interlocking bar 130 that connects to continuously reciprocate a certain section.

Accordingly, when the first driving body 110 rotates the cam plate 112 according to the motor driving, the cam plate 112 rotated in one direction around the motor drive shaft of the first driving body 110 is interlocking bar 130 ), and the other end of the interlocking bar 120 is continuously connected to the grinding blade transfer bar 100, so that the cam plate 112 is formed by the interlocking bar 130 having a vertical structure. During the rotational movement, the polishing blade transfer bar 100 moves only a certain section around the rotation center point 101.

At this time, the polishing blade 12 of the polishing blade transfer bar 100 is processed while moving the cutting surface 10 of the drill D in an arc shape.

In addition, the rotation of the polishing blade 12 on one side of the polishing blade transfer bar 100 includes a first pulley 140 rotatably installed with a motor driving force on one side of the body 1, and the polishing blade transfer A second pulley 141 rotatably installed at the rotation center point 121 of the bar 120, and a third pulley installed at a rotation center rotating the polishing blade 12 of the polishing blade transfer bar 120 ( 142, a driving belt 150 connecting the first pulley 140 and the second pulley 141, and an interlocking belt 151 connecting the second pulley 141 and the third pulley 142 Is rotated by

In addition, the thinning blade 22 is formed in a disk shape, and a thinning end for processing the blade end protrudes at the center of the circumference, and the thinning surface is formed in an inclined upper and lower sides centering on the thinning end. do. In addition, the thinning blade 22 is coupled to the other side of the rotational linkage bar 200 in which a rotational center point 201 forming a rotational center at one side of the body 1 is rotatably coupled to the body 1 As it rotates according to the drive, it makes continuous reciprocating motion for a certain period through the interlocking means.

The interlocking means is rotatably coupled to a contact interlocking member 210 provided on one side of the rotating interlocking bar 200 and a drive shaft for fixing the abrasive blade 12 in the abrasive blade transfer bar 100, and the outer side The contact linking member 210 is connected to the bearing body 220 to which the contact linking member 210 slides into contact with the other side of the rotation linking bar 200 and the body 1 to have an elastic restoring force so that the contact linking member 210 An elastic restoring body 230 to maintain elastic contact with the bearing body 220, and a stopper 240 positioned on the body 10 to control the rotation of the rotation linkage bar 200 to reciprocate only a predetermined period. ).

Accordingly, the polishing blade 12 and the thinning blade 22 reciprocate around the drill D and simultaneously form the cutting surface 10 and the thinning groove 20 of the drill D in sequential motion.

On the other hand, the present invention is not limited by the above-described embodiments and the accompanying drawings, and can be variously modified and applied in various ways not illustrated without departing from the technical spirit of the present invention. It is obvious to those of ordinary skill in the art that substitutions and other equivalent embodiments may be widely applied.

Therefore, the content related to the modification and application of the technical features of the present invention should be interpreted as being included within the spirit and scope of the present invention.

D: drill
1: body
10: cutting surface 12: grinding edge
20: thinning home 22: thinning blade
100: grinding blade transfer bar
101: rotation center point
110: first driving body 112: cam plate
121: first link 122: second link
130: interlocking bar
140,141,142: 1st, 2nd, 3rd pulley
150: drive belt 151: interlock belt
200: rotating interlocking bar
210: contact interlocking member 220: bearing body
230: elastic restoration 240: stopper
300: drill fixing part

Claims (7)

In a drill comprising two cutting surfaces and discharge grooves formed on both sides based on the blade tip of the tip, and cutting edges are formed at the ends of the cutting surface,
The cutting surface 10 of the drill D is repeated by inserting the drill D into the drill fixing part provided on one side of the body 1 of the drill polishing apparatus so that the position is fixed. In addition, the thinning groove 20 is formed at the blade end of the drill D by the repeated arc movement of the thinning blade 22 in addition to being polished by arc movement;
The polishing blade 12 has a circular plate shape and a polishing surface for processing the cutting surface 10 of the drill D around the rim has an inclined inclination angle whose outer diameter is gradually reduced downward, so that the body (1) the cutting surface 10 of the drill (D) is processed by continuously repeatedly transferring the polishing blade 12 in an arc shape through the polishing blade transfer bar 100 provided in (1);
The polishing blade transfer bar 100 has one side fixed to the body 1 to form a rotation center point 101, and the polishing blade 12 is rotatably fixed to the other side so that the rotation center point 101 is the center. So that the polishing blade 12 moves in an arc shape;
The rotation center point 101 of the grinding blade transfer bar 100 is moved with respect to the body 1 through a position converting means so that the cutting angle of the cutting surface 10 is adjusted,
The position conversion means,
A guide plate formed on the body 1 and having an arc-shaped guide groove to guide the central axis forming the rotational center point 101, and a locking hole for fixing the central axis to a selected position of the guide groove. Drill grinding device for simultaneous grinding of thinning and cutting surfaces. delete delete The method of claim 1,
The polishing blade transfer bar 100,
A first driving body 110 that is fixed to one side of the body 1 and moves the cam plate 112 circularly around the drive shaft when the motor rotates,
One end of the cam plate 112 is rotatably connected to the link 121 and the other end is connected to the grinding blade transfer bar 100 by a link 122 so that the grinding blade transfer bar 100 is rotated at the center point 101 Drill polishing apparatus for simultaneous polishing of the cutting surface and thinning, characterized in that it further comprises an interlocking bar (130) connecting so as to continuously reciprocate a predetermined section based on the reference. The method of claim 1,
The rotation of the polishing blade 12 on one side of the polishing blade transfer bar 100,
A first pulley 140 which has a motor driving force on one side of the body 1 and is rotatably installed,
A second pulley 141 rotatably installed at the rotation center point 101 of the grinding blade transfer bar 100,
A third pulley 142 installed at the center of rotation to rotate the polishing blade 12 of the polishing blade transfer bar 100,
A drive belt 150 connecting the first pulley 140 and the second pulley 141,
A drill polishing apparatus for simultaneous polishing of a cutting surface and thinning, characterized in that rotation by an interlocking belt (151) connecting the second pulley (141) and the third pulley (142). The method of claim 1,
The thinning blade 22,
It is made in the shape of a disk and has a shape in which the thinning end for cutting the edge of the blade protrudes at the center of the circumference so that the thinning surface is formed obliquely on the upper and lower sides of the thinning end,
The thinning blade 22 is coupled to the other side of the rotational linkage bar 200 in which a rotational center point 201 forming a rotational center on one side of the body 1 is rotatably coupled to the body 1 to drive a motor Drill polishing apparatus for simultaneous polishing of cutting surface and thinning, characterized in that the continuous reciprocating motion for a certain period through the interlocking means while rotating according to the. The method of claim 6,
The interlocking means,
A contact linking member 210 provided on one side of the rotation linking bar 200,
A bearing body 220 which is rotatably coupled to a drive shaft for fixing the polishing blade 12 in the polishing blade transfer bar 100 and to which the contact linking member 210 slides into contact with the outside,
An elastic restoring body 230 that has an elastic restoring force and is connected to the other side of the rotation linkage bar 200 and the body 1 so that the contact linkage member 210 maintains elastically in close contact with the bearing body 220 )Wow,
A drill polishing apparatus for simultaneous polishing of a cutting surface and thinning, characterized in that it comprises a stopper (240) positioned on the body (1) to control the rotation of the rotational linkage bar (200) to reciprocate only a predetermined period.

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