KR101019669B1 - Rotary jig apparatus having brake system for improving convenience and precision - Google Patents

Abstract

PURPOSE: A rotary jig device with the structure for improving braking convenience and accuracy is provided to easily and precisely control the position of an object because the rotating and locking of the device can be carried out with a single operation of the handle. CONSTITUTION: A rotary jig device with the structure for improving braking convenience and accuracy comprises a base part(110), a body part(120) which is coupled to the base part and allowed to rotate, a handle part(140) which is coupled to the rear side of the base part and allowed to rotate, a rotational ratio conversion unit(130) which includes an output shaft connected to the rotary shaft of the body part and an input shaft connected to the rotary shaft of the handle part, and a handle locking part(150) which is moved back and forth to the rear side of the base part by interlocking with a rotating operation so as to press the base part in a push/pull manner and lock/release the rotation of the handle part.

Description

ROTARY JIG APPARATUS HAVING BRAKE SYSTEM FOR IMPROVING CONVENIENCE AND PRECISION}

The present invention relates to a rotating jig device, and to a rotating jig device having a braking convenience and precision improving structure by providing a braking device in a handle portion of a rotating jig device used for manufacturing an eccentric structure having a different geometric center and a center of gravity. .

In general, in order to manufacture a large structure, it is necessary to assemble each block or parts using welding or coupling means.

In this case, usually, for convenience of assembly work, a block or parts of an assembly target structure are mounted on a separate jig device and assembly is performed.

In particular, in the case of a large structure that is geometrically complicated or whose function is greatly affected by the shape, it is possible to mount the rotary jig device more precisely and easily.

The rotary jig device is composed of a base portion supported by the ground and the body portion rotatably coupled to the base portion, the mounting structure is mounted.

However, in the case of a large structure that is geometrically complicated or whose function is greatly affected by the shape mentioned above, since the geometric center and the center of gravity are generally different, the assembly target structure to be mounted on the rotating jig device in consideration of the convenience of work The center of gravity of the body is to be located eccentrically with the axis of rotation of the body.

Therefore, when the eccentric structure (structure different from the center of gravity and the center of gravity) is mounted on the rotary jig device, a rotation moment naturally occurs in the rotation axis of the body, and rotation displacement of the structure to be assembled is not intended by the operator.

In order to prevent any rotational displacement of the structure to be assembled, conventionally, a separate brake system for restraining the rotation of the body portion has been constructed.

Usually, the brake system for a conventional body part is primarily coupled to the locking pin perpendicularly to the rotational direction of the body part and restrained, and after adjusting the circumferential position of the structure to be assembled precisely with the handle part, the brake pad or the like. Secondary restraint of the body.

Since the body portion on which the high load assembly structure is mounted is very large, as described above, the first restraint is performed by using the locking pin, but due to the tolerance of the hole in which the locking pin and the locking pin are inserted, The circumferential position could not be precisely controlled. To this end, conventionally, as described above, after correcting the circumferential position of the assembly target structure with the handle portion precisely, the secondary restraint was performed using a brake pad or the like.

However, this secondary restraint operation has a problem that the efficiency of assembly work for the overall structure is very poor because the brake system using the brake pads must be adjusted at the same time as the precise adjustment of the handle portion.

In addition, in the conventional brake system for the body part, the first restraint operation using the locking pins must be performed before the second restraint operation, and the braking operation of the rotating jig device is very cumbersome.

 Accordingly, the present invention was devised to solve the above problems, without having a separate brake system for the body of the rotating jig device, a rotation having a braking convenience and precision improvement structure that can easily adjust the position of the assembly target structure It is an object to provide a jig device.

In addition, an object of the present invention is to provide a rotary jig device having a braking convenience and precision improving structure capable of precisely adjusting the position of a structure without a separate brake system for the body of the rotary jig device.

According to the spirit of the present invention, a rotating jig device used to produce an eccentric structure having a different geometric center and a center of gravity, comprising: a base portion supported on a ground; A body portion to which the eccentric structure is mounted and rotatably coupled to the base portion; A rotating shaft having an eccentricity with the rotating shaft of the body portion, the handle portion being rotatably coupled to the rear of the base portion to be rotatable; Rotation ratio conversion means fixedly installed therein, the output shaft is connected to the rotation axis of the body portion and the input shaft is connected to the rotation axis of the handle portion, reducing the rotation ratio; And the handle part is coupled to face the rear part of the base part, and the base part is pushed / pulled in a push / pull form by a push / pull type to frictionally contact by moving forward or backward in the rear direction of the base part in conjunction with a rotation operation. It is possible to provide a rotary jig device having a braking convenience and precision improving structure including a handle fixing portion for restraining and releasing rotation of the handle portion.

At this time, the handle fixing portion, the support block coupled to the handle portion; A toggle lever rotatably coupled to the rear end of the support block; A toggle pressure rod coupled to the front end of the support block so as to be movable forward or backward in the rear end direction and having a pad seating portion extending in the center of the handle portion at one end thereof; A link unit coupled to the support block and connecting the other ends of the toggle lever and the toggle pressing rod to convert the rotation of the toggle lever into a forward or backward movement of the toggle pressing rod; and coupled to the pad seating unit, It may include a friction pad in contact with the friction by pressing the back of the base portion in the push (PUSH) form by the forward movement of the toggle pressure rod.

According to still another aspect of the present invention, the base portion rear surface is formed to protrude rearward from the rear portion of the base portion so as to face the handle portion, and is located in a space separated from the rear portion of the handle portion and the base portion, and circumferentially from an outer circumferential surface thereof. A fixed boss portion having a flange portion extending from the handle portion, and the handle fixing portion includes: a support block coupled to the handle portion; A toggle lever rotatably coupled to the rear end of the support block; A toggle pressure rod coupled to the front end of the support block so as to be movable forward or backward in the rear end direction and having a pad seating portion extending in the center of the handle portion at one end thereof; A link unit coupled to the support block and connecting the other ends of the toggle lever and the toggle pressing rod to convert the rotation of the toggle lever into a forward or backward movement of the toggle pressing rod; and coupled to the pad seating unit, The toggle pad may include a friction pad in friction contact by pressing the bottom surface of the flange portion of the fixed boss portion in a pull (PULL) form as the reverse movement of the toggle rod.

The handle part may be centrally connected to the input shaft and may have a rim-bead structure.

The support block may be formed on a rim of the handle part.

 The rotary jig device having a structure for improving the convenience of rotational braking and precision according to the present invention includes a brake system on a handle part which is directly operated by an operator to adjust the position of the structure to be assembled, so that the rotation jig device can be rotated and fixed once. Since the operation is possible, there is an advantage that can easily and precisely adjust the position of the assembly target structure.

In addition, since the brake system is provided on the handle portion, it is not necessary to provide a separate brake system for fixing the body portion of the rotary jig device, so that the configuration of the rotary jig device can be simplified, and the manufacturing cost can be reduced and economically. There is an advantageous advantage.

1 is a schematic side view schematically illustrating the configuration of an embodiment of a rotary jig device having a braking convenience and precision improving structure according to the present invention.
FIG. 2 is a front partial schematic view schematically illustrating the structure of the handle portion and the handle fixing portion of the embodiment shown in FIG.
3 is a view illustrating an operating state in which a handle fixing part of an embodiment of a rotating jig device having a braking convenience and precision improving structure according to the present invention presses a base part in a push form to restrain the rotation of the handle part. This is a working state diagram.
4 is a view illustrating an operating state in which a handle fixing portion of another embodiment of a rotating jig device having a structure for improving braking convenience and precision according to the present invention is pressed in contact with a fixing boss portion in a pull form to restrict rotation of the handle portion. The operation state diagram shown.

Hereinafter, a preferred embodiment of a rotating jig device having a braking convenience and precision improving structure according to the present invention will be described.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited by the embodiments disclosed below, but will be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention belongs. It is provided to fully inform those skilled in the art of the scope of the invention, which is to be defined only by the scope of the claims.

In addition, in the following description of the present invention, if it is determined that related related technologies and the like may obscure the gist of the present invention, detailed description thereof will be omitted.

1 is a schematic side view schematically illustrating the configuration of an embodiment of a rotary jig device having a braking convenience and precision improving structure according to the present invention, Figure 2 is a handle portion of the embodiment shown in FIG. It is a schematic conceptual view of the front part to explain the structure of the handle fixing portion.

1 shows only those parts which are characterized in order to conceptually clearly understand the constructional relationship for the preferred embodiment of the present invention, and as a result, various modifications of the drawings are expected, and the present invention needs to be greatly limited to the specific forms shown. There is no.

Referring to FIGS. 1 and 2 in parallel, the present embodiment 100 includes a base unit 110, a body unit 120, a handle unit 140, a rotation ratio converting unit 130, and a handle fixing unit 150. It consists of a configuration that includes.

As described in the background art, the present embodiment uses an eccentric structure having a different geometric center and a center of gravity as an assembly target structure, thereby restraining any rotational displacement of the assembly target structure generated when mounted on the rotating jig device. Thus, the basic purpose is to more precisely perform the assembly work on the rotary jig device.

First, the base unit 110 will be described.

The base portion 110 is a member supporting the body portion 120 to be described later including the assembly target structure in contact with the ground.

The base portion 110 provides a space in which the body portion 120 can be rotatably coupled, and provides a space in which the rotation ratio converting means 130 to be described later is built.

The space in which the rotation ratio converting means 130 of the base part 110 is provided is provided near to the rotation axis C1 of the base part 110.

Such, the base portion 110 is designed so that the body portion 120 including the high load assembly structure to be stably rotated, the size, shape and self-weight is designed, and the rigidity of the material to be configured should also be considered.

Next, the body 120 will be described.

The body portion 120 is a structure to which the assembly target structure is mounted and is a structure to which a plurality of frames are coupled.

Such, the body portion 120 may be determined in consideration of the shape of the assembly structure and the welding or fastening work for assembly, etc., in the range having a strength that can be stably mounted to the assembly target structure, Constructing as light as possible will facilitate the operator to adjust the position of the structure to be assembled.

As can be seen in Figure 1, the body portion 120 is rotatably coupled to the base portion 110 described above with respect to the rotation axis (C1). The rotating shaft C1 of the body portion 120 is connected to the input shaft of the rotation ratio converting means 130 to be described later, and has a configuration for transmitting the rotational force of the body portion 120 to the rotation ratio converting means 130.

The term "connection" here means to combine with a combination of mechanical components that transmit direct or torque.

On the other hand, as can be seen in Figure 2, if a predetermined assembly target structure (eccentric structure) is mounted on the body portion 120, the center of rotation (C1) of the body portion 120 and the center of gravity of the assembly target structure ( Since G) is usually formed eccentrically, even without a separate external force, a rotation moment M is generated in the clockwise direction due to the self-weight of the structure to be assembled, so that the body 120 rotates in the clockwise direction.

The direction of the rotation moment (M) may vary depending on the position of the center of gravity (G) of the structure to be assembled.

Next, the handle portion 140 will be described.

The handle unit 140 is a member that receives a rotational force by a direct rotation operation of the operator, and through the rotation ratio conversion by the rotation ratio converting means 130 to be described later, a function of precisely adjusting the rotation of the above-mentioned body portion 120 Do this.

Here, the rotation ratio means the ratio of the rotational speed of the input side gear gear and the rotational speed of the output side driven gear.

As shown in FIG. 2, in the present embodiment, an outer shape of the handle part 140 may be formed in a circular shape having a rim-141-bead 142 structure. The present invention is not limited thereto, and may be implemented by the handle part 140 having various external shapes and internal shapes.

As such, the handle portion 140 has a central portion as shown in Figure 1, rotatably coupled to the back of the base portion 110, the rim 141 and the bead 142 of the handle portion 140 (rim- The bead is configured to be spaced apart from the rear and rear of the base portion (110).

As shown in FIG. 2, the rotation shaft C2 of the handle portion 140 is eccentric with the rotation shaft C1 of the body portion 120.

This is to reduce the burden on the high load of the assembly target structure mounted on the body portion 120.

When the operator rotates the handle part 140, the assembly target structure mounted on the body part 120 and the body part 120 rotates in response to the rotation ratio determined by the rotation ratio conversion means 130 to be described later.

Next, the rotation ratio converting means 130 will be described.

The rotation ratio converting unit 130 receives the rotation of the handle unit 140 described above, and serves to reduce the rotation rate to a predetermined rotation ratio to output and transmit the rotation to the above-described body unit 120.

The rotation ratio converting means 130 is configured by using a gear group having a large reduction ratio such as a worm gear, and is configured such that the rotation ratio is 1/300 in this embodiment. However, the present invention is not limited thereto, and the assembly target structure or the rotation ratio may be set in various ways in consideration of the size and load of the present embodiment, and the gear assembly of the rotation ratio converting means 130 may also be variously implemented. have.

Since the rotation ratio conversion mechanism of the power transmission means corresponds to a known public technology, a detailed description thereof will be omitted.

The output side of the rotation ratio converting means 130 is connected to the rotating shaft (C1) of the body portion 120, the input shaft is connected to the rotating shaft (C2) of the handle portion (140).

In addition, the rotation ratio converting means 130 may be fixedly installed in the above-described base part 110 as can be seen in FIGS. 1 and 2. Specifically, it is installed included in the base portion 110 located in the rear of the body portion 120.

Thus, in this embodiment, when the worker rotates the handle portion 140 300 times, the body portion 120 has a configuration that rotates once, mounted on the body portion 120 through the handle 140 rotation operation. It is possible to precisely rotate the structure to be assembled.

Next, the handle fixing part 150 will be described.

The handle fixing part 150 serves to restrain and release the rotation of the handle part 140 by pressing the base part 110 in a push / pull (PUSH / PULL) form to make frictional contact.

3 is a view illustrating an operating state in which a handle fixing part of an embodiment of a rotating jig device having a braking convenience and precision improving structure according to the present invention presses a base part in a push form to restrain the rotation of the handle part. This is a working state diagram.

First, an embodiment of constraining and releasing rotation of the handle part 140 by pressing the base part 110 in the form of a push (PUSH) will be described with reference to FIG. 3.

FIG. 3A illustrates a state in which the handle fixing part 150 is installed at a rim portion of the handle part 140, and FIG. 3B illustrates a base portion of the handle fixing part 150. It shows the pressure contact with the back.

As shown in FIG. 3, the handle fixing part 150 includes a support block 151, a toggle lever 152, a toggle pressing rod 153, a link part 154, and a friction pad 155. .

The support block 151 is fixedly coupled to the handle portion 140, or is formed on the handle portion 140. Specifically, as shown in Figure 3 (a), it can be installed on the rim (rim) of the handle portion 140.

This, the support block 151, the toggle lever 152 and the link portion 154 is configured to hinge or couple, and the linear bushing to guide the toggle pressing rod 153 in the rear end of the base portion 110 ( Guide means such as 151a may be formed to extend with the support block 151.

The support block 151 illustrated in FIG. 3 briefly illustrates a portion of the support block 151 to conceptually clearly understand the relationship between the handle 140 and various shapes for accommodating the link unit 154 to be described later. It can be implemented in an embodiment, the present invention is not limited to the shape of the support block 151 shown in FIG.

The toggle lever 152 is rotatably coupled to the support block 151 described above.

Toggle lever 152 is a bar-shaped member that provides a large rotational force even with a small force of the operator, a handle may be formed at the end so that the operator can easily rotate.

As can be seen in Figure 3 (b), the toggle lever 152 is rotatably coupled to the outside of the handle portion 140, the operator toggles the handle portion 140 by the push (PUSH) operation during the rotation operation The lever 152 can be naturally operated to increase the convenience of operation.

On the other hand, the toggle pressing rod 153 is coupled to the linear bush 151a of the support block 151 so as to move forward or backward in the rear end direction of the base portion 110. The linear bush 151a restrains the toggle pressing rod 153 in the radial direction, but is a member that enables linear movement.

For this reason, the relative engagement relationship between the toggle pressure rod 153 and the handle part 140 is a linear relationship in the rear end direction of the base part 110, but the movement in the rotational direction of the handle part 140 is not permitted.

An end portion of the toggle pressing rod 153 is provided with a pad seating portion 153a which is formed to extend in the center direction of the handle portion 140 or is coupled to a separate cutting member.

The pad seating portion 153a is a place where the friction pad 155 is seated and coupled thereto, and is formed perpendicular to the toggle pressure rod 153. For efficient pressurization of the friction pad 155, the pad seating portion 153a is provided. It is preferable that the neck portion of the neck is formed to be inclined in the friction direction (in the case of FIG. 3, the base portion 110 in the rear direction, and in the case of FIG. 4 to be described later, the opposite direction to the case of FIG. 3).

The head portion of the pad seating portion 153a is provided in a flat shape having a predetermined area so that the friction pad 155 may be seated thereon, and the boss portion of the pad seating portion 153a may have a toggle pressure rod 153 inserted therein. So that the hollow part can be formed and tightened by a separate clamping means.

Alternatively, the boss portion of the pad seating portion 153a may be provided to extend vertically on the outer circumferential surface of the toggle pressing rod 153. As described above, the head portion and the boss portion of the pad seating portion 153a. It is connected to the neck (neck) formed inclined in the friction direction.

The toggle pressing rod 153 moves forward in the rearward direction of the base part 110 in conjunction with the rotation of the toggle lever 152, thereby as shown in FIG. 3B, the pad seating part 153a. The friction pad 155 seated in the press is pressed against the rear end of the base 110.

The friction pad 155 is formed of a rectangular plate-like member of the outer shape, it is preferable that the friction pad 155 is made of a material having high wear resistance and heat resistance.

By the pressing force of the toggle pressing rod 153, the friction pad 155 generates a vertical drag at the contact portion with the back of the base portion 110, restrains the toggle pressing rod 153 with a friction force corresponding thereto, and toggle pressing Constrained in the rotational direction with the rod 153 is to naturally constrain the rotation of the handle portion 140 coupled.

On the other hand, the link portion 154 is coupled to the support block 151, connects the toggle lever 152 and the toggle pressing rod 153, the rotation of the toggle lever 152 to advance the toggle pressing rod 153 or Convert to reverse movement.

Such, the link portion 154 is generally composed of a combination of three or more hinges connecting the toggle lever 152 and the toggle pressing rod 153 and link members connecting the same, only by the rotational movement of the input side, Since it corresponds to a general mechanical power conversion mechanism causing a linear motion of the output side, it is excluded from the description of the present embodiment, and detailed illustration is omitted in FIGS. 3 and 4.

Next, another embodiment of restraining and releasing rotation of the handle part 140 by pressing the base part 110 in a pull shape will be described with reference to FIG. 4.

4 is a view illustrating an operating state in which a handle fixing part of a further embodiment of a rotating jig device having a structure for improving braking convenience and precision according to the present invention is pressed in contact with the fixing boss of the base part in the form of a pull to restrain the rotation of the handle part. It is an operational state diagram shown to make.

FIG. 4A illustrates a state in which the handle fixing part 150 is installed at a rim portion of the handle part 140. In FIG. 4B, the handle fixing part 150 is a flange part. It shows the state which contacted the bottom face (111a).

In the description of the present embodiment, the same components mentioned in the embodiment to constrain and release the rotation of the handle portion 140 by pressing the base 110 in the form of a push (PUSH) described with reference to FIG. The description of the characteristics, the coupling relationship and the working relationship of these will be omitted, and only the differences will be described.

As can be seen in Figure 4, in the present embodiment, the base portion 110 is provided with a fixed boss portion 111 protruding rear from the rear of the base portion 110 to face the handle portion 140. Thus, the fixed boss 111 is positioned on the spaced space behind the handle 140 and the base 110.

And, the upper surface of the fixed boss portion 111 is provided with a flange portion 111a extending in the circumferential direction from the outer circumferential surface.

The flange portion 111a is formed to provide a friction surface for the friction pad 155 to contact, has a radius smaller than the radius of the handle portion 140 and correspondingly extends along the outer circumferential surface of the handle portion 140. Is formed.

Such a fixed boss 111 is for forming a position at which the frictional force restraining the rotation of the handle part 140 acts as close as possible to the handle part 140, and the pad seating part 153a and the toggle due to the frictional force. The pressure rod 153 and the link unit 154 serves to minimize the burden.

In this embodiment, the neck portion of the pad seating portion 153a is formed to be inclined in the direction of the flange portion 111a, and the friction pad 155 seated on the head of the pad seating portion 153a is the bottom surface of the flange portion 111a. Will face.

In addition, the toggle pressing rod 153 moves backward with respect to the rear end direction of the base part 110 in conjunction with the rotation of the toggle lever 152, thereby as shown in FIG. 4B, the pad seating part ( The friction pad 155 seated on the 153a is pressed against the bottom of the flange 111a to be brought into contact with it.

Thus, due to the pressing force of the toggle pressing rod 153, the friction pad 155 generates a vertical drag at the bottom and the contact portion of the flange portion 111a, restrains the toggle pressing rod 153 with a friction force corresponding thereto. , Constrained in the rotational direction with the toggle pressure rod 153 is to naturally restrain the rotation of the handle portion 140 coupled.

Since the handle fixing part 150 as described above is installed in the handle part 140, the assembly target more precisely than the brake system is installed in the body portion 120 is relatively small rotational displacement than the handle portion 140 It is possible to adjust the rotational position of the structure, it is possible to operate the handle fixing portion continuously in the operation of operating the handle portion 140 without the operation of the brake system separately installed, it is possible to greatly increase the convenience of work.

In the above, a preferred embodiment of the rotary jig device having a braking convenience and precision improving structure according to the present invention has been described.

It is to be understood that the above-described embodiments are illustrative in all aspects and should not be construed as limiting, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

110: base portion 111: high information portion
111a: flange portion 120: body portion
130: rotation ratio converting means 140: handle portion
141: rim 142: beads
150: handle fixing part 151: support block
152: toggle lever 153: toggle pressing rod
154: link portion 155: friction pad

Claims (5)

In the rotating jig device used to produce an eccentric structure having a different geometric center and a center of gravity,
A base portion supported on the ground;
A body portion to which the eccentric structure is mounted and rotatably coupled to the base portion;
A rotating shaft having an eccentricity with the rotating shaft of the body portion, the handle portion being rotatably coupled to the rear of the base portion to be rotatable;
Rotation ratio conversion means fixedly installed therein, the output shaft is connected to the rotating shaft of the body portion and the input shaft is connected to the rotating shaft of the handle portion, reducing the rotation ratio; And
The handle part is coupled to the handle part opposite to the rear part of the base part, and is moved forward or backward in the rear direction of the base part in conjunction with a rotational operation to press the base part in a push / pull form to frictionally contact the handle part. A handle fixing portion for restraining and releasing the rotation of the portion,
The handle fixing part includes a support block coupled to the handle part, a toggle lever rotatably coupled to the rear end of the support block, and a forward or backward movable coupling to the front end of the base part at the front end of the support block. Toggle pressing rod which is formed in the pad seating portion extending in the center direction of the handle portion, and coupled to the support block, by connecting the other end of the toggle lever and the toggle pressing rod, the rotation of the toggle lever to advance the toggle pressing rod Or a link unit for converting to a reverse movement, and a friction pad coupled to the pad seating portion to press the rear surface of the base portion in a push (PUSH) form by forward movement of the toggle pressure rod to frictionally contact. Rotating jig device with improved braking convenience and precision.
delete In the rotating jig device used to produce an eccentric structure having a different geometric center and a center of gravity,
A base portion supported on the ground;
A body portion to which the eccentric structure is mounted and rotatably coupled to the base portion;
A rotating shaft having an eccentricity with the rotating shaft of the body portion, the handle portion being rotatably coupled to the rear of the base portion to be rotatable;
Rotation ratio conversion means fixedly installed therein, the output shaft is connected to the rotating shaft of the body portion and the input shaft is connected to the rotating shaft of the handle portion, reducing the rotation ratio; And
The handle part is coupled to the handle part opposite to the rear part of the base part, and is moved forward or backward in the rear direction of the base part in conjunction with a rotational operation to press the base part in a push / pull form to frictionally contact the handle part. Including; handle fixing portion for restraining and releasing the rotation of the
A fixed boss having a rear surface of the base portion protruding from the rear surface of the base portion to face the handle portion and positioned at a space between the handle portion and the rear surface of the base portion and extending in a circumferential direction from an outer circumferential surface thereof. An addition is formed,
The handle fixing part includes a support block coupled to the handle part, a toggle lever rotatably coupled to the rear end of the support block, and a forward or backward movable coupling to the front end of the base part at the front end of the support block and the handle at one end thereof. Toggle pressurized rod extending in the direction of the center of the pad and the support block, coupled to the support block and the other end of the toggle lever and toggle pressing rod by connecting the rotation of the toggle lever to the forward or backward movement of the toggle pressing rod And a friction pad coupled to the pad seating portion, and a friction pad for frictionally contacting the bottom surface of the flange portion of the fixed boss by pressing the rod pressing rod in a pulled form as a backward movement of the toggle pressure rod. And a jig device having a precision improving structure.
The method of claim 3, wherein
The handle portion is a rotary jig device having a braking convenience and precision improvement structure, characterized in that the central portion is connected to the input shaft, and has a rim-bead structure.
The method of claim 3, wherein
The handle part has a central portion connected to the input shaft, and has a rim-bead structure.
The support block is a rotary jig device having a braking convenience and precision improvement structure, characterized in that formed on the rim (rim) of the handle portion.

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