KR101536939B1

KR101536939B1 - Core drill apparatus for cutting arc type magnet

Info

Publication number: KR101536939B1
Application number: KR1020140086836A
Authority: KR
Inventors: 공군승
Original assignee: 공군승
Priority date: 2014-07-10
Filing date: 2014-07-10
Publication date: 2015-07-16

Abstract

The present invention relates to a core drilling apparatus for an arc-type magnet cutting apparatus which inserts a work (MM) to produce a magnet (MG) of a predetermined size, the apparatus comprising: a bed frame (10) having an outlet (12) on a worktable (11); A cutting means (20) provided on the bed frame (10) with a cutter (25) via a platform (22); Fixing means 30 for receiving the work MM in the transfer chute 31 fixed to the bed frame 10 and clamping the work MM to the external pressurizing stand 33 and the internal pressurizing stand 35; And variable means (40) installed to vary the cutting position of the work (MM) with respect to the cutter (25).
Accordingly, there is an effect that productivity can be improved due to the flexibility of the process because the magnet material can be continuously inserted into the core drill phase and cut continuously.

Description

TECHNICAL FIELD [0001] The present invention relates to a core drill apparatus for cutting a circular arc magnet,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core drilling apparatus for circular arc-type magnet cutting, and more particularly, to a core drill apparatus for circular arc-type magnet cutting capable of varying a desired dimension in a process of continuously cutting a material.

Since a general magnet is manufactured by a sintering method in which a minute sized raw material in the form of a powder, which is a material, is shaped into a certain shape and size, and then cured at a high temperature, the structure is dense and has a high hardness. This is difficult. The cutter for magnet cutting is manufactured by coating industrial diamond on the tip surface of a cylindrical body. Particularly, an arc-shaped or sectorial magnet is not easy to process as compared with a linear magnet.

Reference may be made to Korean Patent Registration No. 0547753 (Prior Art 1) and Korean Patent Registration No. 1298015 (Prior Art 2), which are related to the processing of an arc-shaped magnet.

The prior art document 1 includes a conveying path for guiding a magnet member to be polished in one direction; Conveying means for continuously conveying the magnet member to the conveying path; A pair of polishing means arranged so as to sandwich the conveying path; And pushing means disposed on the downstream side of the polishing means for pushing the magnet member in the direction opposite to the carrying direction. As a result, it is expected that the water surface of the magnet member can be stably processed in one step to increase the productivity.

The prior art document 2 includes magnet fixing means for press-supporting the magnet so that at least two or more magnets are simultaneously supplied at equal intervals to be processed; A vertical holder fixed vertically to a rear surface of the bed and having a motor moved in a vertical direction; And a metal material cutter for rotating the magnet on the magnet fixing means to a predetermined radius of curvature at the same time while being rotationally driven by the motor. Accordingly, it is expected that the precision, quality, and productivity of the product can be improved by processing the centers of the inner and outer diameters exactly.

However, since the former is based on the polishing method, the time required for machining is relatively long, and the loss of the material is large. According to the latter method, there is a limit to the inconvenience of replacing the cutter and time-consuming to change the machining dimension.

1. Korean Registered Patent No. 0547753 entitled " Process Apparatus and Processing Method of Magnet Member "(Publication Date: March 26, 2001) 2. Korean Registered Patent No. 1298015 entitled "Magnet Processing Device" (Published on Aug. 26, 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems in the prior art, and it is an object of the present invention to improve the productivity by the flexibility of the process, And to provide a core drill device for cutting an arc-shaped magnet.

In order to attain the above object, the present invention provides a core drilling apparatus for an arc-type magnet for generating a magnet having a predetermined size by inputting a material, comprising: a bed frame having an outlet on a work table; A cutting means having a cutter provided on the bed frame via a platform; Fixing means for receiving the material in the transfer chute fixed to the bed frame and clamping the material to the outside pressurizing unit and the inner pressurizing unit; And variable means provided to vary the cutting position of the workpiece with respect to the cutter.

According to the detailed construction of the present invention, the inner presser of the fixing means is provided on the work table so as to be positionally changeable.

According to the detailed configuration of the present invention, the inner presser bar is provided with a piece having a curvature equal to that of the cutter at the outer end thereof.

According to the detailed configuration of the present invention, the variable means comprises a conical cam which can move up and down so as to maintain contact with the inner end of the inner pressurizing band.

At this time, the conical cam of the variable means keeps the set position of the up and down movement through the rack, the pinion, and the worm gear.

As described above, according to the present invention, it is possible to rapidly and precisely vary a desired dimension in a process of continuously cutting a magnet material into a core drill phase, thereby improving the productivity due to process flexibility.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a core drilling apparatus according to the present invention; Fig.
Fig. 2 is an enlarged plan view of the fixing means of the device according to the invention; Fig.
3 is an enlarged plan view showing a main part of the apparatus according to the present invention.
4 is a configuration diagram showing a state before and after operation of the device according to the present invention;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention proposes a core drilling apparatus for an arc-shaped magnet cutting apparatus which inserts a work (MM) to generate a magnet (MG) of a predetermined standard. The material (MM) is inserted into a bar shape having a rectangular cross section, and is formed as an arc-shaped magnet (MG) having curved surfaces on the front and rear surfaces. The front and rear surfaces of the magnet are formed into curved surfaces having the same center.

A bed frame (10) according to the present invention is a structure having an outlet (12) on a work table (11). The bed frame 10 is a structure of a general drilling machine in which a work table 11 is mounted on an upper plate. A tray 15 for collecting finished products is provided on the bottom surface of the work table 11 on the upper frame of the bed frame 10. [ A plurality of outlets 12 are formed between the work table 11 and the tray 15. The outlet 12 is set on the basis of the largest dimension among the magnets (MG) that can be produced by the device.

According to the present invention, the cutting means 20 has a structure in which the cutter 25 is provided on the bed frame 10 via the platform 22. The cutter 25 uses a core drill bit coated with a diamond-shaped end portion of a cylindrical body. The platform 22 causes vertical movement of the cutter 25 in the same manner as the structure of a general drilling machine.

According to the present invention, the fixing means 30 accommodates the work MM in the transfer chute 31 fixed to the bed frame 10 and clamps the work MM with the external pressing band 33 and the internal pressing band 35 Structure. 2, one feed chute 31, an external presser bar 33, and an internal presser bar 35 are illustrated as one side of the work table 11. However, as shown in FIG. 3, Respectively. Of course, it is also possible to adopt a configuration in which three, five, six and eight sets of fixing means 30 are arranged on one work table 11. In any case, the material (MM) is clamped from the outer end side to the outer pressurizing belt (33) from the inner end side to the inner pressurizing belt (35). Although the pneumatic / hydraulic cylinder is suitable as the external pressure pad 33, an electric actuator or the like may be used. The transfer chute 31 guides the transfer of the material MM in a set direction while tightly accommodating the material MM.

According to the detailed construction of the present invention, the inner presser bar (35) of the fixing means (30) is installed on the work table (11) so as to be positionally changeable. In Fig. 3, four inner press bars 35 are slidably provided on the work table 11, and press and support the material MM in a state in which the inner press tables 35 are opposed to the respective outer press tables 33. [ The position fluctuation structure of the inner pressurizing belt 35 is an element that easily changes the thickness (width) of the magnet MG to be cut.

According to the detailed construction of the present invention, the inner presser bar (35) is characterized in that the outer piece has a piece (36) having the same curvature as the cutter (25). Since the inner pressing bar 35 is in contact with the curved surface on the inner end side of the magnet MG to be cut, it is preferable to mount the curved piece 36 having the same curved surface. Needless to say, the piece 36 may not necessarily contact one surface but may be configured to contact three or five surfaces. In any case, the piece 36 is made of a resin material having a hardness lower than that of the material MM, and is installed in a replaceable structure.

According to the present invention, the variable means (40) is provided so as to vary the cutting position of the work (MM) with respect to the cutter (25). The variable means 40 is an element that causes the above-described internal pressurizing band 35 to change position and keep the changed position securely. The change of the cutting position of the workpiece MM with respect to the cutter 25 eventually causes a change in the thickness (width) of the magnet MG as described later.

According to the detailed configuration of the present invention, the variable means (40) is characterized in that the conical cam (42) which keeps contact with the inner end of the inner presser bar (35) is movable up and down. 4, the cone cam 42 is centrally disposed on the worktable 11 and remains in contact with the four inner presser bars 35 at the same time. The inner end of the inner presser bar (35) is formed into a spherical surface so as to stably contact the cone cam (42). When the conical cam 42 rises to the position of the reference numeral 42 ', since the inner pressing bar 35 moves outward, the cutting thickness of the magnet MG by the fixed cutter 25 is reduced from W1 to W2. Of course, when the cone cam 42 is lowered, the cutting thickness of the magnet MG is increased. In any case, the outlet 12 is formed in such a dimension that the cut magnet MG falls smoothly into the tray 15.

At this time, the conical cam 42 of the variable means 40 maintains the set position of the up and down movement via the rack 44, the pinion 46, and the worm gear 48. A rack 44 is formed on the central axis of the conical cam 42 and the pinion 46 is engaged with the rack 44 and the worm wheel of the worm gear 48 is coaxially engaged with the pinion 46, 48) to the motor. Accordingly, the worm wheel 48 and the pinion 46 are operated by the rotation of the motor, thereby causing the conical cam 42 to move up and down. According to this configuration, the conical cam 42 can be prevented from being arbitrarily interlocked by the clamping reaction force through the inner pressurizing belt 35. [ The position of the conical cam 42 is detected by using an ultrasonic sensor, a laser sensor, or the like in addition to the encoder mounted on the motor.

On the other hand, it is preferable to connect the inner presser bar 35 with the work table 11 via the spring 38 so as to keep the conical cam 42 in close contact.

In operation, when the worker starts the operation of the controller (not shown) after loading the work MM on the transfer chute 31 of the fixing means 30, the external pressurizing belt 33 is operated to set The work MM is clamped and the cutter 25 is lowered to cut the work MM to a predetermined thickness W1 to generate the magnet MG and the cut magnet MG is guided to the tray (15). In the process of cutting the work MM by the lowering of the cutter 25, the miter piece 36 of the inner presser bar 35 maintains a tightly supported state by interlocking with the outer presser bar 33.

In this state, when the worker changes the setting of the cutting dimension through the controller, the variable means 40 operates to cause the position change of the conical cam 42 and the inner pressing bar 35. When the cutter 25 descends The material MM is cut with the changed thickness W2 to generate the magnet MG. The thickness variation range of the magnet is determined in conjunction with other elements of the core drilling machine.

At this time, if the size of the air outlet 12 is not sufficient due to the structure of the core drill, the fall position of the magnet MG can be changed by interlocking with the external presser bar 33 while causing the cone cam 42 to move up and down .

A cover may be provided on the upper side of the work table 11 in the bed frame 10 to prevent scattering of chips generated during cutting of the cutter 25. [

As described above, the core drill of the present invention can produce the finished product of a precise dimension quickly by changing only the setting of the controller without the inconvenience of replacement and alignment of the cutter 25 in mass production of the arc-shaped magnet.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: bed frame 11: workbench
12: outlet 15: tray
20: cutting means 22: platform
25: cutter 30: fixing means
31: Feed chute 33:
35: inner pressurizing zone 36:
40: Variable means 42: Conical cam
44: rack 46: pinion
48: Worm Gear MM: Material
MG: Magnet W1, W2: Thickness

Claims

A core drill for an arc-type magnet cutting machine, comprising:
A bed frame (10) having an outlet (12) on a work table (11);
A cutting means (20) provided on the bed frame (10) with a cutter (25) via a platform (22);
Fixing means 30 for receiving the work MM in the transfer chute 31 fixed to the bed frame 10 and clamping the work MM to the external pressurizing stand 33 and the internal pressurizing stand 35; And
And variable means (40) installed to vary the cutting position of the work (MM) with respect to the cutter (25)
Wherein the inner presser bar (35) is provided at the outer end thereof with a piece (36) having the same curvature as that of the cutter (25).

The method according to claim 1,
Characterized in that the inner presser bar (35) of the fixing means (30) is installed on the work table (11) so as to be positionally variable.

delete

The method according to claim 1,
Characterized in that the variable means (40) comprises a conical cam (42) which can move up and down so as to maintain a contact state with the inner end of the inner presser bar (35).

The method of claim 4,
Characterized in that the conical cam (42) of the variable means (40) holds a set position of up and down movement via the rack (44), the pinion (46) and the worm gear (48) .