KR20150080965A - The steering wheel device for up and down movement for grinding-molding device - Google Patents

Abstract

The present invention relates to a handle device for a grinder and, more specifically, to an up-and-down movement handle device for a grinder. The device includes a housing shaping the appearance; a rotary shaft penetrating the housing; a micro control part having a worm formed in a part and penetrating the housing; a worm gear part inserted into the rotary shaft, having a worm gear formed to correspond to the worm, and rotated by the micro control part; a disk part inserted into the rotary shaft and rotating with the rotary shaft; and a locking part fixed on the rotary shaft, becoming eccentric from a rotation center line and the handle rotating with the rotary shaft, penetrating the disk part, locked in the worm gear part and the disk part, and fixing or releasing the worm gear part to allow the worm gear part to rotate with the rotary shaft while rotating with the disk part. If the locking part pulls the worm gear part, the worm gear part is attached to the disk part. If the micro control part is rotated while the worm gear part is attached to the disk part, the worm gear part, the disk part, the handle, and the rotary shaft rotate together. If the locking part stops pulling the worm gear part, only the disk part, the handle, and the rotary shaft rotate. Therefore, a slip phenomenon of the worm gear part is prevented, and a processed object is precisely formed by precisely controlling the rotary shaft through the worm gear part.

Description

Technical Field [0001] The present invention relates to a steering wheel device for a grinding machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a handle device for a molded grinder, and more particularly to a vertically movable handle device for a shaped grinding machine for vertically moving a workpiece.

A molded grinding machine is a device for grinding and forming a precise workpiece.

For example, the workpiece is grinded while vertically moving the workpiece while the workpiece is fixed to the molded grinding machine. At this time, the drive means for moving the workpiece up and down is a vertical movement handle.

That is, the worker grinds the workpiece while slightly manipulating the vertical movement handle.

For example, if the grinding tool grinds the workpiece while moving, movement errors such as backlash occur when the grinding tool moves, and precise work is impossible.

Therefore, automatic grinding is performed within the allowable error range, and in the case of precision grinding, the worker grinds the workpiece while finely manipulating the handle.

However, during normal grinding work, the movement of the workpiece is controlled by rotating the handle, but at the time of precise grinding work, the workpiece is moved more finely through the fine adjustment part for finely adjusting the rotation axis.

As shown in FIGS. 1 and 2, the vertical moving handle for a conventional shaped grinding machine is provided with a housing 11 on a bearing portion B fixed to a molding grinder 26, A rotation axis 12 is provided through the housing 11 and a fine adjustment unit 13 having a worm is installed on the housing 11.

Here, a fixed scale portion 27 having a scale (not shown) is provided in front of the housing 11.

The sleeve bearing 14 into which the plurality of lock pins 15 are inserted is fitted to the rotary shaft 12 and the worm gear portion 16 having the worm gear formed in the sleeve bearing 14 is fitted. At this time, the worm of the fine adjustment unit 13 and the worm gear are engaged with each other.

The bush 17 is fitted to the rotary shaft 12 so as to prevent the worm gear from being separated from the sleeve bearing 14 after the worm gear unit 16 is installed and the first disk 18 is fitted in the rotary shaft 12, The second disc 19 is inserted into the rotation axis 12 and engaged with the rotation scale 20 after the rotation scale 20 having the scale (not shown) is fitted on the first disc 18.

Here, a fixing bolt 21 for fixing or releasing the rotation scale 20 to the first disk 18 is provided around the rotation scale 20.

The handle 22 is fitted to the rotary shaft 12 and the fixing nut 24 is engaged with the end of the rotary shaft 12 after the second disk 19 is installed.

On the other hand, the rotary shaft 12 is formed with a hollow opening at the inside thereof, a female screw is formed at the hollow opening, and a locking screw 25 is inserted into the female screw and screwed. A plurality of holes are formed in the hollow rear of the rotary shaft 12 in such a manner that the above-described lock pin 15 passes through the rotary shaft 12 in the vertical direction and is hollowly protruded.

Here, the locking screw 25 is formed in a conical shape at its rear end, and the locking pin 15 is formed in a conical shape so that one end corresponds to the rear end of the locking screw 25. Thereby, one end of the lock pin 15 and the rear end of the lock screw 25 come into close contact with each other.

A key groove is formed in the rotation shaft, the first disk, the second disk, and the handle 22, and the key K is inserted into the key groove so that the rotation shaft, the first disk, the second disk, and the handle 22 rotate together.

For example, when a workpiece (not shown) is subjected to a general grinding operation, an operator grips the grip portion 23 and rotates the handle 22 to move the workpiece up and down. However, in the case of fine working, the worker tightens the locking screw 25 to fix the worm gear unit 16 so that the worm gear unit 16 cooperates with the rotary shaft 12.

That is, when the locking screw 25 is tightened, the rear end of the locking screw 25 is inserted into the hollow, the locking pins 15 are pushed out of the rotary shaft 12, and the locking pins 15 move outward, 15 are brought into close contact with the inner diameter of the gear portion.

The worm gear unit 16 and the rotary shaft 12 are interlocked with each other and the worm gear unit 16 and the worm gear unit 16 are fixed to each other by the lock pin 15 pushing the lock pins 15, The rotary shaft 12 rotates together.

When the worm gear unit 16 is fixed to the rotary shaft 12, the fine adjustment unit 13 is rotated and the worm gear unit 16 is rotated to rotate the rotary shaft 12 finely. Thus, the workpiece can be moved finely up and down.

However, since the contact area between the lock pin 15 and the worm gear unit 16 is small, the worm gear unit 16 slips. That is, when the fine adjustment unit 13 is rotated, the lock pins 15 do not securely hold the worm gear unit 16, causing the worm gear unit 16 to loose from the sleeve bearing 14.

Particularly, since the ends of the lock pins 15 are formed in a conical shape, abrasion is severely generated in the portion where the lock pin 15 and the lock screw 25 come into close contact with each other, whereby the lock pins 15 are disengaged from the worm gear portion 16, So that the slipping phenomenon of the worm gear unit 16 is further exacerbated.

Therefore, when the slip phenomenon occurs in the worm gear unit 16, a misalignment occurs when the rotary shaft 12 malfunctions and moves the workpiece, thereby causing a problem that the workpiece can not be precisely machined. Moreover, the wear speed of the lock pin 15 and the lock screw 25 is high, which shortens the service life.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vertically movable handle device for a shaping and grinding machine capable of preventing a slipping phenomenon of a worm gear unit and finely and precisely adjusting a rotational axis through a worm gear unit. have.

In order to achieve the above object,

A worm gear formed at one portion of the worm gear, the worm gear being fitted to the rotation shaft and corresponding to the worm, the worm gear being formed at one portion of the worm gear; A worm gear unit that is rotated by the fine adjustment unit; a disk unit which is fitted to the rotation shaft and rotates together with the rotation shaft; a handle fixed to the rotation shaft and rotated together with the rotation shaft; And a lock portion which is installed through the disc portion and is fixed to the disc portion and the worm gear portion and rotates together with the disc portion and fixes or releases the worm gear portion so that the worm gear portion rotates together with the rotation shaft, When the worm gear unit is pulled out, And the worm gear unit, the disk unit, the handle, and the rotation shaft rotate together when the fine adjustment unit is rotated in a state in which the worm gear unit and the disk unit are in close contact with each other. When the lock unit releases the worm gear unit, And the handle and the rotary shaft are rotated together. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

In addition,

A stopper which is disposed eccentrically from the rotation center line and which is provided at a part of the disc portion and is restricted by the worm gear portion and slidable in the longitudinal direction of the rotation shaft and a lock screw portion which is restrained by a portion of the disc portion to slide the stopper, The stopper is slidably moved to pull the worm gear unit to closely contact the worm gear unit and the disk unit, and when the lock screw unit is rotated in the other direction, the worm gear unit and the disk unit are separated from each other .

The apparatus may further include a fixed scale portion formed with a scale and installed in the housing, a rotation scale portion provided on the disk portion and freely rotated and scaled, and a fixing bolt fixing the rotation scale portion to the disk portion .

In addition,

A first disk having an insertion hole through which the stopper is inserted and a through hole communicating with the insertion hole and into which the locking screw is inserted, And a second disk closely attached to one surface of the first disk to prevent the rotation scale from separating from the first disk.

In addition,

A male screw portion which is disposed in the insertion hole and has one end protruded from the through hole and the other end is screwed to the stopper and a male screw portion which is engaged with one end of the male screw portion in a state where one end of the male screw portion protrudes from the second disk, And when the male screw portion and the rotating portion are engaged, the male screw portion and the rotating portion can be constrained to the second disk.

The stopper may further include a fixing pin installed between the stopper and the disc portion. The stopper may be prevented from rotating due to the rotation of the locking screw portion by sliding the stopper on the fixing pin.

In addition,

The fixing pin may be fixed to the disc portion to prevent the fixing pin from being separated from the disc portion when the stopper is moved.

In addition,

And may have elasticity such that the periphery of the fixing pin contracts or expands to easily engage or disengage from the disc portion.

The worm gear unit is formed with a guide groove around one end thereof, and the stopper is provided with a detachable groove around the other end thereof. The stopper can pull or release the worm gear unit while the guide groove and the detachable groove are engaged with each other.

In addition,

And may protrude through one end of the handle to facilitate the operation of the locking portion.

Further,

And a grip portion protruding in the direction of one end of the rotation shaft around the handle to easily rotate the handle.

The worm gear unit, the disk unit, and the handle may be easily separated from or coupled to the rotating shaft by unscrewing or tightening the fixing nut.

In addition, a sleeve bearing is further provided between the worm gear unit and the rotation shaft, and wear of the worm gear unit and the rotation shaft can be minimized by the sleeve bearing.

In the sleeve bearing,

The worm gear unit is formed to have a length longer than a length of the worm gear unit, and the disc unit can be prevented from being brought into close contact with the worm gear unit when the fixing nut is tightened.

The worm gear portion and the disk portion may be in surface contact with each other with respect to the center line of the rotation shaft so that the worm gear portion and the disk portion are quickly contacted with or separated from each other.

According to the present invention, it is possible to prevent the worm gear unit from slipping by engaging the worm gear unit and the disk unit in firm contact with each other. Thus, it is possible to prevent a machining error or a machining failure of the workpiece from occurring.

Further, there is an advantage that the rotation shaft can be finely and precisely adjusted by preventing the slip phenomenon of the worm gear unit. Thus, the workpiece can be processed more precisely.

Further, since the worm gear portion and the disk portion are in close contact with each other, there is an advantage that the wear rate is slow and the service life is prolonged accordingly.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan sectional view showing a vertically-moving handle for a conventional shaped grinding machine. Fig.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]
3 is an assembled perspective view of a vertically movable handle device for a molded grinder according to an embodiment of the present invention;
4 is an exploded perspective view of a vertically movable handle device for a molded grinder according to an embodiment of the present invention;
5 is a plan sectional view of a vertically movable handle device for a molded grinder according to an embodiment of the present invention.
6 is an enlarged sectional view of the portion "A"
7 is an exploded perspective view of a stopper and a fixing pin in the vertical movement handle device for a molded grinder according to the embodiment of the present invention.
8 is a plan sectional view showing an operating state of the vertical movement handle device for a molded grinder according to the embodiment of the present invention.
9 is an enlarged cross-sectional view of "A '"

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for the sake of brevity.

3 to 9, the vertical movement handle device for a shaped grinding machine according to the embodiment of the present invention includes a housing 2, a rotary shaft 3, a fine adjustment portion 4, a worm gear portion 5, (6), a handle (7) and a locking portion (8). Here, it further includes a fixed graduation part 10, a rotation graduation part 20, a fixing bolt 30, and a fixing pin 40.

The housing 2 has a cylindrical shape that is substantially in a lying-down shape, is open at the front, penetrates through one central region so as to sandwich the rotating shaft 3, and is fixed to a bearing portion B provided in a molding grinder (not shown) do.

The rotary shaft 3 is formed in a substantially rounded shape and has an outer surface formed with a stepped surface, a key groove formed around the front surface thereof, a male thread formed on the front surface thereof, and a bearing portion B and the housing 2.

In the fine adjustment unit 4, a worm is formed at one portion, a portion where the worm is formed is disposed inside the housing 2, and the other portion is installed through the upper portion of the housing 2 to be rotatable. Accordingly, when the fine adjustment unit 4 is rotated, the worm rotates together.

The worm gear unit 5 has a substantially cylindrical center hole, a worm gear at the rear, and a guide groove 51 at its front end.

The worm gear unit 5 is disposed inside the housing 2 and is fitted in the rotary shaft 3 so that the worm gear is engaged with the worm of the fine adjustment unit 4. At this time, in order to minimize wear of the worm gear unit 5 and the rotary shaft 3, a sleeve bearing 9 is provided between the worm gear unit 5 and the rotary shaft 3. The worm gear portion 5 rotates freely from the sleeve bearing 9 when the fine adjustment portion 4 is rotated.

Here, the sleeve bearing 9 is formed to be longer than the worm gear unit 5 by a predetermined length. This is because when the fixing nut 31 is coupled to the rotary shaft 3 in a state where the worm wheel 5, the sleeve bearing 9, the disk 6 and the handle 7 are fitted to the rotary shaft 3, Can be in close contact with the worm gear unit 5. To prevent this, the length of the sleeve bearing 9 is formed to be longer than the worm base 5 by a predetermined length.

The disc portion 6 includes a first disc 61 and a second disc 62 in a substantially disc shape.

The first disk 61 has a substantially circular disk shape with a rear periphery extended outwardly, a hole formed at the center thereof, and a keyway formed at a portion of the hole.

The first disk 61 is formed with an insertion hole 611 in which a stopper 82 to be described later is inserted and spaced apart from the hole and a fixing pin 40 to be described later is inserted into a part of the insertion hole 611 A pinhole 612 is formed, and a hole formed at the center is fitted to the rotary shaft 3.

The second disk 62 is formed in a substantially disk shape and has a hole penetrating the center thereof. A key groove is formed in one portion of the hole. The second disk 62 is spaced apart from the hole so that the through- As shown in FIG.

The second disk 62 has a center hole formed in the second disk 62 in a state in which the rotation scale portion 20 to be described later is fitted around the first disk 61, (20). At this time, the second disk 62 is aligned with the center line of the through hole 621 formed in the second disk 62 and the insertion hole 611 formed in the first disk 61. The rotation scale 20 is restrained between the first disk 61 and the second disk 62 and rotates between the first disk 61 and the second disk 62. [

The handle 7 is formed with a through hole in the boss 72 of the handle 7 in the form of a combination of a rim, an arm and a boss 72, a keyway formed in one part of the hole, 7 is provided with a free-rotating gripping portion 71 at one portion thereof.

Here, when the handle 7 is inserted into the rotary shaft 3, the front end of the rotary shaft 3 protrudes from the boss 72, and the fixing nut 31 is screwed to the front end of the rotary shaft 3. Thus, the handle 7 is prevented from separating from the rotary shaft 3.

On the other hand, the key groove formed in the rotary shaft 3, the first disk 61, the second disk 62, and the handle 7 is aligned and the key K is inserted into the key groove. Thus, the rotating shaft 3, the first disk 61, the second disk 62, and the handle 7 rotate together. That is, when the operator grasps the grip portion 71 and rotates the handle 7, the rotary shaft 3, the first disk 61, and the second disk 62 rotate together.

The rims, arms and bosses 72 of the handle 7 described above are well known in the art and will not be described in detail.

The lock portion 8 includes a stopper 82 and a lock screw portion 81 for fixing or releasing the worm gear portion 5 by bringing the worm gear portion 5 into close contact with the first disk 61. [

The stopper 82 has a substantially cylindrical shape with a female screw threaded through the stopper 82. A rotation preventing groove 822 in which the fixing pin 40 is inserted and a guide groove 51 of the worm gear 5 are formed around the stopper 82, The recess 821 is formed.

When the stopper 82 is inserted into the insertion hole 611 of the first disk 61 and then the fixing pin 40 is inserted into the pin hole 612 and the rotation preventing groove 822, The front end portion of the worm gear portion 5 is inserted into the detachable groove 821 and the rear end portion of the stopper 82 is inserted into the guide groove 51 Moves forward and backward. That is, the detachable groove 821 and the guide groove 51 are engaged with each other, and the stopper 82 is prevented from rotating by the fixing pin 40 so that the stopper 82 can move forward or backward, The stopper 82 moves the worm gear unit 5 forward so that the worm gear unit 5 is brought into close contact with the first disk 61. [ A description thereof will be described later.

Here, the fixing pin 40 has a substantially cylindrical shape, the periphery is cut in the longitudinal direction, and is formed of an elastic material so that the periphery thereof can be worn or restored. Accordingly, the periphery of the fixing pin 40 can be easily removed from the pinhole 612 by being contracted and restored, and the fixing pin 40 can be securely fixed to the pinhole even when the fixing pin is detached.

The lock screw portion 81 moves the stopper 82 and includes a male screw portion 812 and a rotation portion 811. [

The male screw portion 812 is formed in a substantially rounded round bar shape and has a male screw threadedly engaged with the stopper 82 at its rear portion, a circumferential portion extending outwardly in the middle, Is inserted into the through hole (621) at the back of the disk (62). Accordingly, the extended portion of the male threaded portion 812 is caught by the through hole 621, and the front of the male threaded portion 812 protrudes from the second disk 62.

The rear end of the rotation part 811 is connected to a male thread part 812 protruding from the second disk 621. The rotation part 811 is formed in a generally stepped cylindrical shape with a rear end opened, And then the rotary portion 811 and the male screw portion 812 are engaged and fixed by using a pin (not shown) or a wrench bolt (not shown).

The male threaded portion 812 and the rotating portion 811 are restrained by the second disc 62. When the rotating portion 811 is rotated, the male threaded portion 812 rotates, and when the male threaded portion 812 rotates, 82 move forward or backward. Further, when the disc portion 6 rotates, the lock portion 8 also rotates together.

On the other hand, the rotating portion 811 protrudes forward through the rim of the handle 7 and the rim. Accordingly, the user can easily operate the rotation unit 811. [

The fixed scale portion 10 is formed in a substantially ring shape and has a scale (not shown) formed on the outer surface thereof, and is fixed in the front of the housing 2.

The rotation graduation portion 20 corresponds to the outer surface of the first disk 61 and the second disk 62 described above and the front and rear ends of the inner portion correspond to the outer surface of the first disk 61 and the second disk 62 62, and a fixing bolt 30 is screwed around the periphery. As a result, when the fixing bolt 30 is tightened, one end of the fixing bolt 30 protrudes into the rotation graduation 20, and the protruding fixing bolt 30 is closely attached to the circumference of the first disk 61, The scale portion 20 is fixed to the first disk 61. [ Further, when the fixing bolt 30 is loosened, the rotation graduation portion 20 freely rotates from the disk portion 6.

The fixed scale unit 10 and the rotation scale unit 20 described above are well known in the art and will not be described in detail.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

When the worker performs a normal grinding operation, grasp the grip portion 71 and rotate the handle 7 to grind the workpiece while moving the workpiece up and down. That is, within a sufficient error range, it is possible to perform grinding while moving the workpiece up and down by simply rotating the handle 7 directly.

At this time, during precise grinding work, it is difficult to rotate the handle 7 to move the workpiece. That is, if the handle 7 is directly rotated in a section in which the workpiece is to be moved finely, the workpiece may be excessively moved, resulting in defective machining.

Therefore, the workpiece must be moved finely during the precision grinding work, and the rotation axis 3 can be finely adjusted through the fine adjustment section 4. [

Normally, when the handle 7 is rotated, the disc portion 6 and the rotary shaft 3 rotate together, but the worm gear portion 5 does not rotate.

It is possible to finely adjust the rotary shaft 3 by interlocking the worm gear unit 5 and the rotary shaft 3 and rotating the interlocked worm gear unit 5 at the time of precise grinding.

For example, when the rotary portion 811 is rotated in one direction, the male screw portion 812 rotates together, and when the male screw portion 812 rotates, the stopper 82 moves forward.

When the rotary part 811 is continuously rotated, the rear inner side surface of the detachable groove 821 comes in close contact with the inner surface of the front side of the guide groove 51, and the stopper 82 pulls the worm gear part 5 forward.

When the worm gear unit 5 moves forward, the front surface of the worm gear unit 5 comes into close contact with the rear surface of the first disk 61 and comes into surface contact.

At this time, when the rotation unit 811 is further rotated, the worm gear unit 5 and the first disk 61 work together while the worm gear unit 5 is tightly attached to the first disk 61.

When the worm gear unit 5 is fixed to the first disk 61, the fine adjustment unit 4 is rotated to rotate the worm gear unit 5.

The first disk 61 rotates together when the worm gear unit 5 rotates and the rotation shaft 3, the second disk 62, the handle 7, and the lock unit 8 are rotated when the first disk 61 rotates. Rotate together.

On the other hand, when the rotation part 811 is rotated in the other direction, the stopper 82 moves backward and the worm gear unit 5 is separated from the first disk unit 61 and the fixing of the worm gear unit 5 is released.

Therefore, by bringing the worm gear unit firmly in contact with the first disk, the slip phenomenon of the worm gear unit can be prevented, and the rotation axis can be adjusted more precisely. Accordingly, the grinding error can be minimized during the grinding of the workpiece, so that the workpiece can be processed more precisely, and the worm gear can be quickly fixed or released to improve the working speed. In addition, by increasing the area of contact, it is possible to minimize the worn portion and further extend the service life of the device. In addition, the worm gear portion and the first disk can be quickly brought into close contact or separated by bringing the worm gear portion and the first disk into surface-to-surface contact perpendicularly with reference to the center line of the rotating shaft.

In describing the present invention described above, the same reference numerals are used for the same configurations even if the embodiments are different, and the description thereof may be omitted if necessary.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Shall not be construed as being understood. Therefore, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. The present invention is not limited thereto.

2; housing
3; Rotating shaft
31; Fixed nut
4; The fine-
5; Worm gear unit
51; Guide groove
6; Disk portion
61; The first disk
611; Insertion hole
612; Pinhole
62; The second disk
621; Through-hole
7; handle
71; Grip section
72; boss
8; Locking portion
81; Locking thread
811; reel
812; Male threads
82; stopper
821; Detachable groove
822; Anti-rotation groove
9; Sleeve Bearing
10; Fixed scale part
20; Rotation graduation
30; Fixing bolt
40; Fixing pin
K; key
B; Bearing portion

Claims (15)

A housing having an outer shape;
A rotating shaft disposed through the housing;
A fine adjustment unit in which a worm is formed at one portion and is installed through the housing;
A worm gear unit that is fitted to the rotation shaft and has a worm gear corresponding to the worm formed at one portion thereof and rotated by the fine adjustment unit;
A disk portion fitted to the rotation shaft and rotated together with the rotation shaft;
A handle fixed to the rotary shaft and rotating together with the rotary shaft; And
A worm gear unit which is disposed eccentrically from the rotation center line and penetrates the disc unit and is fixed to the disc unit and the worm gear unit and rotates together with the disc unit and fixes or releases the worm gear unit so that the worm gear unit rotates together with the rotation shaft; ; ≪ / RTI >
When the worm gear unit is pulled by the lock unit, the worm gear unit is brought into close contact with the disc unit. When the fine adjustment unit is rotated in a state in which the worm gear unit and the disc unit are in close contact, the worm gear unit, the disc unit, Wherein when the lock portion releases the pulling of the worm gear portion, only the disk portion, the handle, and the rotation shaft rotate together.
The method according to claim 1,
The locking portion
A stopper disposed eccentrically from the rotation center line and installed on a part of the disc portion and restrained by the worm gear portion and slidingly moved in the longitudinal direction of the rotation shaft; And
And a locking screw portion that is restrained by a portion of the disc portion to slide the stopper,
When the lock screw portion is rotated in one direction, the stopper slides and pulls the worm gear portion to closely contact the worm gear portion and the disk portion, and when the lock screw portion is rotated in the other direction, the worm gear portion and the disk portion are separated from each other And the upper and lower movable handle device for a molding and grinding machine.
The method according to claim 1,
A fixed scale portion formed with a scale and installed in the housing;
A rotation scale unit provided on the disk unit and freely rotating and scaled; And
And a fixing bolt for fixing the rotation scale to the disk unit.
The method of claim 3,
In the disk unit,
A first disc in which an insertion hole through which the stopper is inserted is formed at a portion where the periphery is stepped; And
A through hole communicating with the insertion hole and through which the locking screw portion is inserted is formed so that the rotation graduation portion is fitted to the first disk and is closely contacted to one surface of the first disk to prevent the rotation graduation portion from separating from the first disk And a second disk for holding the workpiece.
5. The method of claim 4,
The lock-
A male screw portion disposed in the insertion hole and having one end protruded from the through hole and the other end screwed into the stopper; And
And a rotation part coupled to one end of the male screw part and rotated together with the male screw part in a state in which one end of the male screw part protrudes from the second disk,
Wherein when the male screw portion and the rotating portion are engaged, the male screw portion and the rotating portion are constrained to the second disk.
The method according to claim 2 or 4,
And a fixing pin installed between the stopper and the disc portion,
Wherein the stopper prevents the stopper from rotating due to the rotation of the lock screw portion by sliding the stopper with the stop pin.
The method according to claim 6,
Wherein the fixing pin includes:
Wherein the fixing pin is fixed to the disc portion side so as to prevent the fixing pin from being separated from the disc portion when the stopper is moved.
8. The method of claim 7,
Wherein the fixing pin includes:
Wherein the fixing pin has elasticity so that the periphery of the fixing pin contracts or expands so as to easily engage or disengage from the disc portion.
3. The method of claim 2,
Wherein the worm gear unit has a guide groove formed around one end thereof,
Wherein the stopper has a detachment groove formed around the other end thereof,
And the stopper pulls or releases the worm gear unit when the guide groove and the detachable groove are engaged with each other.
The method according to claim 1,
The locking portion
Wherein the handle is protruded through one end of the handle so as to facilitate manipulation of the lock portion.
The method according to claim 1,
The handle
Further comprising a gripper portion protruding in a direction of one end of the rotary shaft around the handle so as to easily rotate the handle.
The method according to claim 1,
And a fixing nut screwed to one end of the rotary shaft,
Wherein the worm gear unit, the disk unit, and the handle are easily separated or coupled from the rotation shaft by unscrewing or tightening the fixing nut.
13. The method of claim 12,
And a sleeve bearing between the worm gear unit and the rotation shaft,
Wherein the worm gear unit and the rotating shaft are minimized by abrasion of the worm gear unit and the rotating shaft by the sleeve bearing.
14. The method of claim 13,
The sleeve bearing comprises:
The worm gear unit is formed to have a length longer than a length of the worm gear unit,
And the disc portion is prevented from coming into close contact with the worm gear portion when the fixing nut is tightened.
The method according to claim 1,
Wherein the worm gear portion and the disk portion are in surface contact with each other with respect to a center line of the rotation axis so that the worm gear portion and the disk portion are quickly contacted with or separated from each other.

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