KR101660437B1

KR101660437B1 - MCT for tab Safe Torque tools

Info

Publication number: KR101660437B1
Application number: KR1020160032141A
Authority: KR
Inventors: 이성구
Original assignee: 이성구
Priority date: 2016-03-17
Filing date: 2016-03-17
Publication date: 2016-09-28

Abstract

The present invention relates to a tap safety torque tool for MCT, more particularly, to a CNC machining center, an NC lathe, a universal complex milling machine, and a drill for forming a hole or a tap for forming a thread, The torque tool is installed to the lower side of the main shaft and when the drill or the tab is overloaded, the power transmitted from the main shaft is not transmitted to the drill or the tab but is idled by the torque tool, And the tap can be safely protected. When an overload occurs due to a torque operation to the upper side of the main body of the tool, the drive main shaft and the main body are slid vertically to separate the drill and the tab, And a safety tap tool for a city.
The present invention is characterized in that a choke nut for connecting a tap connects a torque axis located at a lower side and forms a main body for providing an elastic force of a spring between the safety steel balls and a torque adjustment screw- A safety torque torque tool comprising: a safety torque chuck comprising a nut, the torque shaft being stopped when a set torque exceeds a set torque,
A main body that is threadedly engaged with the torque adjusting nut and protrudes from an inner diameter, an inner diameter guide ball is coupled to an outer diameter of the main body, and an inner diameter bolt is connected to the upper side;
An outer diameter guide shaft coupled with the inner diameter guide ball on the upper side of the main body, forming an inner diameter slide guide groove in the Z axis, having an outer diameter guide steel bar on an outer diameter thereof,
A main body having an outer diameter guide groove connected to the lower oil-less bushing from the upper side to an upper oil-less bush at the lower side of the outer diameter guide shaft and having an inner diameter coupled with the outer diameter guide ball in the Z-axis direction;
And an inner diameter bolt which includes an outer diameter spring provided between the outer diameter guide shaft and the upper oilless bush and fixes an inner diameter spring provided on the inner diameter of the upper side of the outer diameter guide shaft and is coupled to the upper side of the main body through the outer diameter guide shaft It is characterized by.

Description

{MCT for tab Safe Torque tools}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tap safety torque tool for an MCT (MCT), and more particularly to a tap safe torque tool for an MCT A torque tool is installed on the lower side of the drill or tab. When an overload is applied to the drill or tab, the power transmitted from the main shaft is not transmitted to the drill or the tab and is idled by the torque tool, A safety torque tool for safely protecting the main body of the motor, and an overcurrent preventing mechanism for preventing the breaking of the drill or the tab when the overload is generated due to the torque operation of the main body of the safety torque tool, To a safety torque tool.

In general, the CNC machining setter and the legal composite milling are used for drilling, tapping, reaming, boring, spot-facing, etc., depending on the type of tool mounted on the workpiece, And countersinking. When a torque is largely applied to a tool in a process of performing an operation using a drill or a tab during operation, the drill or the tab is broken, The drill bit must be exchanged and the workpiece is crushed and the economic loss is very large. In this case, if the rotation of the drill bit is stopped immediately or the rotation of the drill bit is prevented from being transmitted to the drill or tab, Development of such a device has not yet been accomplished.

Conventional CNC machining centers and universal composite milling are used to connect a drill or a tap to a drill bit, to form a through hole or hole by using a drill in the work, or to form a tab in the through hole or hole.

However, when the tap is formed in the hole, if the depth of the hole is not precisely known and the tab is moved so as to descend deeper than the depth of the hole, a collision occurs at the tip of the hole, If the torque is exceeded and the part of the tab breaks, the tab and the drill do not fit properly, or if the tab is worn or the workpiece is of the same material as the tool steel, the cutting property is not good. The breakage of the tab due to the collision of the tabs occurs frequently, resulting in a lot of economic losses.

When the drill or the tab is broken due to the torque, it breaks instantly while rotating at a high speed.

In order to prevent such drawbacks, Patent Registration No. 1549629 (registered on May 27, 2015), which was filed by the applicant of the present invention, discloses a spindle which is connected to a handle and moves to a lower side of a spindle, 1. A tabletop drill machine torque tool for performing any one of the operations,

A spindle linkage having a connecting shaft for coupling with the spindle main shaft and having a plurality of pin through holes formed therein, an outer diameter screw formed on an outer diameter thereof and an axial movement guide groove formed below the elastic space of the inner diameter;

An elastic adjustment pin coupled to the pin through-hole to adjust the elasticity by pressing the elastic adjustment washer;

A rotation guide provided on a lower side of a wing having a ball stop groove formed on an underside of an upper shaft connected to an elastic adjustment washer at an outer diameter of the elastic space and having a lower bearing coupled thereto and a chuck coupling shaft protruding from the chuck coupling;

An elasticity adjusting unit coupled to an outer diameter of the connecting shaft and having an inner diameter screw engaged with an outer diameter screw and controlling the torque by controlling the position of the elasticity adjusting pin;

An idle washer which is positioned below the elastic adjusting washer and is fitted to the upper shaft, the moving guide ball is engaged with the outer diameter, and the rotation guide ball is coupled to the lower ball guide groove;

And a spring which is located in the elastic space between the elastic adjustment washer and the idle washer and controls the rise of the idle washer by the torque.

However, according to the program, for example, the tap torque tool for tap safety is protected by protection of the entrance of the tap when the load is applied while the tap is installed at a depth of 10 mm and the tap is about 5 mm. However, A break occurred.

In other words, a great load is applied to the Z-axis, and when the tap stops and various actions occur, the bottom dead center and the top dead center are not corrected, resulting in a problem that the torque eventually breaks.

Due to these problems, when the tab breaks during the part processing, it takes a lot of time to pull out the tab. If the broken tab is not pulled out, the parts must be reworked. It is also difficult to cause the workpiece to be defective, and during the clogging of the hole tap, breakage often occurs momentarily, resulting in a large loss of time.

Document 1. Patent Publication No. 2007-0093515 (published on September 19, 2007) Document 2. Patent Publication No. 2006-0011799 (published Feb. 02, 2006) Literature 3. Patent Registration No. 1549629 (Registered on Aug. 27, 2015) Literature 4. Patent Registration No. 1585589 (Registered on Mar. 01, 2016)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a safety torque chuck which prevents breakage of a drill or a tap by providing a torque tool for connecting a drill or a tap to a lower side of a chuck nut, Even when a torque acts on the workpiece, the tool is slid to the Z-axis to protect the tool and the workpiece when the load is applied.

Another object of the present invention is to provide a scale according to a tapping standard on the outside of a safety torque chuck so that torque can be adjusted by adjusting it to a horizontal scale scale.

Another object of the present invention is to compensate for the Z axis error of the tool, the workpiece and the equipment even if the spindle shaft is lowered in the state where the tool is stopped by the torque operation during the tapping operation.

The present invention relates to a torque adjusting nut for screw tightening with a main body and a torque adjusting nut for adjusting a torque of the main body, Wherein when the set torque exceeds a set torque, the torque shaft is stopped,
A main body that is threadedly engaged with the torque adjusting nut and protrudes from an inner diameter, an inner diameter guide ball is coupled to an outer diameter of the main body, and an inner diameter bolt is connected to the upper side;
An outer diameter guide shaft coupled with the inner diameter guide ball on the upper side of the main body, forming an inner diameter slide guide groove in the Z axis, having an outer diameter guide steel bar on an outer diameter thereof,
A main body having an outer diameter guide groove connected to the lower oil-less bushing from the upper side to an upper oil-less bush at the lower side of the outer diameter guide shaft and having an inner diameter coupled with the outer diameter guide ball in the Z-axis direction;
And an inner diameter bolt which includes an outer diameter spring provided between the outer diameter guide shaft and the upper oilless bush and fixes an inner diameter spring provided on the inner diameter of the upper side of the outer diameter guide shaft and is coupled to the upper side of the main body through the outer diameter guide shaft It is characterized by.

delete

A torque tool is provided to connect a drill or a tap to a lower side of a chuck nut so as to prevent breakage of a drill or a tap. Even when torque is applied during operation of the tap on the upper side of the safety torque chuck, And it is possible to slide the Z-axis from the torque chuck collet to protect the tool and the workpiece.

The present invention proposes to extend the life of the tool and to work with a constant torque by preventing the breakage of the taps and the torque device and the spindle (Z axis) during small diameter tapping operations in CNC machining centers (MCT), NC lathe and universal compound milling To provide the effect of enabling.

In the present invention, a scale according to a tapping standard is provided on the outside of a safety torque chuck so that the torque adjusting nut can be rotated to adjust the torque for safe operation of the tap in accordance with the horizontal scale, thereby preventing breakage of the tap and overloading the tool Thereby protecting the tool and the workpiece.

According to the present invention, even if the spindle shaft is lowered in the state where the tool is stopped by the torque operation during the tapping operation, the Z-axis error of the tool and the workpiece and equipment can be compensated by about 15 mm to protect the cutting tool, the workpiece and the equipment.

1 is a front view of an installation state showing a preferred embodiment of the present invention;
2 is a front view showing a state in which an error value is compensated by the rise of a torque chucklet on the basis of the main body of the present invention
3 is a front view showing a state in which an error value is compensated for by the descent of a torque chucklet on the basis of the main body of the present invention
4 is a cross-sectional view showing the installation state of the present invention
5 is a sectional view of an installation state of the safety torque chuck according to the present invention
Fig. 6 is a sectional view of the torque-choke collet according to the present invention
7 is a cross-sectional view of the main body and the outer diameter guide shaft of the present invention
8 is a sectional view of the main body and the outer diameter guide shaft of the present invention
9 is a cross-sectional view of the main body of the present invention
10 is a plan view of the main body of the present invention
11 is a cross-sectional view of the body of the present invention
12 is a bottom view of the body of the present invention
13 is a sectional view of the outer diameter guide shaft according to the present invention
14 is a bottom view of the outer diameter guide shaft of the present invention
15 is a front view of the torque axis and position control pin of the present invention
16 is a plan view of the torque control shaft of the present invention
17 is a bottom view of a main portion of the torque adjusting nut of the present invention
18 is a plan view of the hammer prevention plate of the present invention
19 is a plan view of the spring cap of the present invention

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

2 is a front view showing a state in which an error value is compensated by the rise of a torque chucklet on the basis of the main body of the present invention, and FIG. 3 is a front view FIG. 4 is a sectional view showing an installation state according to the present invention. FIG. 4 is a front view showing a state in which a torque chuckle is lowered based on a main body to compensate for an error value. FIG.

A safety torque chuck 10 is provided below a torque chuck 30 connected to a spindle of an MCT (CNC machining center), an NC lathe and a universal complex milling, and a torque projected to the lower side of the safety torque chuck 10 A drill or a tap (hereinafter referred to as a "tab") is connected to the collet nut 22 of the shaft 21 to form a hole or a tap.

When the overload occurs in the safety torque chuck 10 in excess of the torque set on the tab connected to the collet nut 22, the torque shaft 21 stops due to the torque operation before the breakage, and the main body 11 rotates, Prevent it in advance.

The torque chuck 30 is provided on the upper side of the safety torque chuck 10 so that the spindle Z axis is not stopped due to the machining program in the state where the torque axis 21 is stopped by the torque operation during the tap operation, The sliding movement of the Z axis is provided by the combination of the main body 31, the outer diameter guide shaft 32 and the main body 11, thereby preventing breakage of the tabs and the workpiece, and protecting the equipment and the main body 11 and the like.

The slide movement of the Z axis causes the outer diameter guide shaft 32 coupled to the main body 11 to descend downward from the main body 31 by about 15 mm (Fig. 3), and the outer diameter guide shaft 32 coupled to the main body 11, (Fig. 4), and the slide direction of the Z-axis is set so as to compensate for an error value of +/- 15 mm.

FIG. 5 is a sectional view of the safety torque chuck according to the present invention, in which a chuck nut 22 for engaging a tab is provided at the lower end of the torque shaft 21, And is connected to the inner diameter of the main body 11 by a snap ring 20 from the upper side of the bearing.

The safety steel ball 16 is connected to a top of the torque shaft 21 so as to ride on a groove in which the safety ball 16 is engaged in the hammer prevention plate 17, And a position control pin 14a passes through the spring cap 13 and is connected to the inside of the torque adjusting nut 12 on the upper side of the spring 14. [

The main body 11 has a male screw 11a at its outer diameter and an inner diameter bolt 41 at its upper end and a torque adjusting nut having a female screw 12a connected to the male screw 11a. 12 are connected to the main body 11 through an O-ring 23 at a lower inner diameter.

The inner diameter of the main body 11 is connected to the torque shaft 21 by a needle bearing 15. A tab standard is formed on the lower side of the outer diameter so as to adjust the torque of the tab, The torque shaft 21 is stopped and the main body 11 idles to prevent the torque from being transmitted to prevent breakage of the tab.

FIG. 6 is a cross-sectional view of the torque chuck according to the present invention, FIG. 7 is a cross-sectional view of the main body and the outer diameter guide shaft of the present invention, and FIG.

An inner diameter guide groove (34) is provided at a part of the outer diameter of the main body (11), and an outer diameter guide groove (33) for forming an inner diameter slide guide groove (33) And a shaft 32 is provided.

An outer diameter guide steel bar 36 is provided at an outer diameter at the center of the outer diameter guide shaft 32 and an outer diameter spring 38 is fitted at an outer diameter at the upper side so that the inner diameter of the main body 31 is supported by the upper oil- .

An outer diameter guide groove 37 is formed in the inner diameter of the main body 31 in which the outer diameter guide steel ball 36 is located in the Z axis direction so that the outer diameter guide shaft 32 slides in the Z axis direction.

An inner diameter bolt 41 for receiving elasticity of the inner diameter spring 40 is connected to the upper inner diameter of the outer diameter guide shaft 32 on the upper side of the main body 11.

FIG. 9 is a cross-sectional view of the main body of the present invention, and FIG. 10 is a plan view of the main body of the present invention.

The main body 11 is formed with a screw hole 110 to which the inner diameter bolt 41 is coupled on the upper side and an inner diameter ball groove 111 in which the inner diameter guide ball 34 is located on the outer diameter. After the male thread 11a is formed, a torque shaft mounting groove 114 is formed on the inner side from the lower side and three to five torque safety grooves 112 are formed upward from the torque shaft mounting groove 114, (14) is inserted.

Fig. 11 is a sectional view of the main body of the present invention, and Fig. 12 is a bottom view of the main body of the present invention.

The main body 31 is formed with an upper bush coupling groove 31a and an upper oilless bush 39. An outer diameter slide guide groove 33 is formed in a central portion of an inner diameter in the Z axis direction, And the lower bushing groove 31b in which the oilless bush 35 is located.

FIG. 13 is a sectional view of the outer diameter guide shaft of the present invention, and FIG. 14 is a bottom view of the outer diameter guide shaft of the present invention.

The outer diameter guide shaft 32 is formed with a torque groove 320 for providing an inner diameter bolt 41 with an inner diameter on the upper side and a bolt through hole 321 for passing the inner diameter bolt 41 through the lower side of the torque groove 320 And an inner diameter slide guide groove 33 in which the main body 11 is slid in the Z axis is formed at a lower side of the bolt through hole 321. The outer diameter of the outer diameter guide groove 36 So that the steel ball groove 322 is formed.

FIG. 15 is a front view of a torque axis and a position control pin of the present invention, and FIG. 16 is a plan view of a torque control shaft of the present invention.

The position control pin 14a is coupled with a spring 14 on the lower side and the position projection 14b located on the lower side of the inner diameter of the main body 11 through the spring cap 13 is formed on the upper side, .

The safety steel ball 16 provided on the lower side of the spring 14 is located in the safety groove 21a formed on the upper side of the torque shaft 21. [

The upper side of the position control pin 14a passes through the pin connecting hole 13a of the spring cap 13 and the steel ball 16 is located in the hammer hole 21a of the hammer prevention plate 17, (21a).

FIG. 17 is a bottom view of a main portion of a torque adjusting nut according to the present invention. In the torque adjusting nut 12, a plurality of rotation preventing grooves 12b are formed at regular intervals, And the upper position projection 14b is positioned and provided to provide a position for adjusting the torque.

FIG. 18 is a plan view of the hammering plate of the present invention. The hammer prevention plate 17 is formed in a shape of a sawtooth hole at regular intervals so that the safety steel ball 16 is located, So that the safety steel ball 16 can be returned through the positional movement.

FIG. 19 is a plan view of a spring cap according to the present invention. The spring cap 13 forms a pin connecting hole 13a such that the position control pins 14a are independently installed, 13a so that the position control pin 14a provides an upright position.

According to the present invention having such a configuration, a tap is provided from the lower end of the torque shaft 21 to the chuck nut 22 to perform a drilling operation for forming a hole or a work for forming a tab in a formed hole.

The torque chuck 30 and the safety torque chuck 10 are rotated by the power supplied from the MCT and the workpiece is fixed on the upper side of the table to form either the through hole or the hole, By performing the tabu-

The safety torque chuck 10 that rotates at high speed performs a work required for the workpiece with the tab while descending and while the tab is rotating at a high speed while performing the hole forming operation or the tapping operation, The torque is generated through the torque, and the torque is transmitted through the torque.

However, when the torque due to the rotation of the tab is not tolerable while performing the hole or tapping operation, the tab breaks. However, before the torque is generated in the torque shaft 21 and the tab tries to break When the generated torque exceeds the elastic force of the spring 14 through the safety steel ball 16, the safety groove 21a and the large portion of the hammer hole 17a of the hammer prevention plate 17 move to a small portion, The torque chuck 10 is continuously rotated by the power transmission, and the torque shaft 21 is stopped as it is, so that the rotation of the tap can be prevented to prevent the torque chuck 10 from being broken.

That is, when the main body 11 is rotated by the power of the main body 11, the operation is performed using the tabs on the torque axis 21 through the tabs. The safety steel ball 16 and the spring 14 do not transmit to the torque shaft 21 so that the torque axis 21 provides a stopped state to perform a safety torque action to prevent breakage of the tab.

However, if the tapping operation is performed automatically, if the tapping depth is not reached and the overload occurs in the tab due to the unexpected processing requirement, the safety torque operation continues in the Z axis So as to compensate for the error value in the Z-axis direction so as not to break the tab.

That is, when the main body 11 moves downward in the Z-axis direction to perform a tapping operation, and a torque is generated in the middle and taps are to be broken, the outer diameter of the main body 11 of the torque chuck collet 30 The outer diameter guide ball 36 of the outer diameter guide shaft 32 coupled to the outer diameter guide shaft 32 moves down in the Z axis direction to correct the Z axis error value (FIG. 3), and the main body 11 performs a tapping operation in the Z axis direction Diameter slide guide groove 33 formed in the lower inner diameter of the outer diameter guide shaft 32 of the torque chuck collet 30 when torque is generated and the taps are generated in the middle, The inner diameter guide ball 34 fixed on the inner diameter guide ball 11 elevates in the Z-axis direction and corrects the Z-axis error value (FIG. 4), so that the torque chuck collet 30 moves up and down Even if a torque that tends to break the tab is generated, A safety cushion device for correcting the torsional error value and the rising error value is provided to prevent the tab breakage.

When the main body 11 descends in the Z-axis direction, the outer diameter spring 38 provides an elastic force in the inner diameter of the main body 31 at the upper oilless bush 39 and the outer diameter guide shaft 32, And when the main body 11 rises in the Z-axis direction, the inner diameter spring 40 provides an elastic force through the inner diameter bolt 41 so that the error value is compensated and returned.

Therefore, the safety torque chuck 10 protects the tabs, the workpiece and the tool by preventing the rotation of the tabs by stopping the rotation of the tabs due to the torque applied to the taps during the tapping operation, 30) compensates the rising and falling error values of the Z axis by ± 15 mm when the torque is generated before the tapping operation is completed while the spindle is driven in the Z axis in the MCT, NC lathe, Even when the tab is stopped and moved further, it is possible to protect the break and the workpiece and the tool.

The torque adjusting nut 12 adjusts a torque value through a female screw 12a engaged with a male screw 11a of the main body 11,

When the torque adjusting nut 12 is rotated, the torque adjusting nut 12 is lowered while rotating, and the position controlling pin 14a is lowered to increase the pressing force of the safety steel ball 16, The position projection 14b of the position control pin 14a is brought into contact with the rotation preventing groove 12b formed inside the torque adjusting nut 12 to provide the position of the torque to be adjusted, 14a are mounted on the pin connecting hole 13a of the spring cap 13 so as to be stood upright on the upper side of the spring 14 so that the torque can be easily adjusted.

The hammer prevention hole 17a of the hammer prevention plate 17 is located in the large hammer hole 17a and provides torque. When the set torque is exceeded, the safety hammer 16 is inserted into the hammer hole 17a so that the main body 11 rotates together with the torque shaft 21 so that the torque does not act.

In the present invention, torque is generated by a rotational force generated during a tap operation, so that the power is cut off before the tab breaks, thereby protecting the tab, the workpiece and the tool. In the process of raising and lowering the set value of the tapping operation, And compensates for the rising and falling error values of the Z-axis in the case of further movement, thereby protecting the workpiece and the tool from breakage of the tab, thereby providing the tab safety torque tool.

10: Safety torque chuck 11: Main body
11a: male screw 12: torque adjusting nut
12a: female thread 12b: anti-rotation groove
13: spring cap 13a: pin connecting hole
14: spring 14a: position control pin
14b: Position projection 15: Needle bearing
16: safety ball 17: hammer prevention plate
17a: Crossing hole 18: Bearing
20: Snap ring 21: Torque axis
22: Collatt Nut 30: Torque Chuck Collet
31: main body 31a: upper bushing coupling
31b: Lower bush joint groove 32: Outside diameter guide shaft
33: inner diameter slide guide groove 34: inner diameter guide steel
35: lower oilless bush 36: outer diameter guide steel
37: outer diameter slide guide groove 38: outer diameter spring
39: upper oilless bush 40: inner diameter spring
41: inner diameter bolt 110: screw hole
111: inner diameter ball groove 112: torque safety groove
114: torque shaft mounting groove 320: torque groove
321: bolt through hole 322: outer diameter steel ball groove

Claims

A main body 11 is formed which is engaged with a torque shaft 21 located at a lower side of the chuck nut 22 connecting the tabs and provides elastic force of the spring 14 between the safety steel balls 16, The torque shaft 21 is stopped when a safety torque chuck 10 composed of a torque adjusting nut 12 screwed to the body 11 and adjusting the torque generates an abnormal set torque in the tap ,
A main body 11 screwed with the torque adjusting nut 12 and protruding from an inner diameter and having an inner diameter guide groove 34 joined to an outer diameter thereof and an inner diameter bolt 41 connected to the upper side;
An inner diameter guide groove 33 is formed in the Z axis on the upper side of the main body 11 and an inner diameter guide groove 36 is formed on the outer diameter of the inner body guide groove 34. The inner diameter guide bolt 41 An outer diameter guide shaft 32 on which the outer diameter guide shaft 32 is installed;
The outer diameter guide groove (35) is connected to the lower oilless bush (35) from the lower side of the outer diameter guide shaft (32) by the upper oilless bush (39) 37) are formed;
And an outer diameter spring 38 provided between the outer diameter guide shaft 32 and the upper oilless bush 39. An inner diameter spring 40 is fixed to the upper inner diameter of the outer diameter guide shaft 32, And an inner diameter bolt (41) penetrating through the guide shaft (32) and coupled to the upper side of the main body (11).

The method according to claim 1,
The main body 11 is formed with a male screw 11a and engages with a torque adjusting nut 12 to form a torque shaft mounting groove 114 to which the torque shaft 21 is connected and a lower safety steel ball 16 An inner diameter ball groove 111 for coupling the inner diameter guide ball 34 to the outer diameter at the upper side is formed and the inner diameter bolt 41 is fixed to the upper center Wherein a screw hole (110) is formed in the center of the tab.

The method according to claim 1,
The outer diameter guide shaft 32 is formed with an inner diameter slide guide groove 33 in the Z axis direction on the lower inner diameter and a bolt through hole 321 through which the inner diameter bolt 41 passes, And a torque groove (320) for providing an inner diameter bolt (41) is formed on an upper inner diameter of the outer diameter ball groove groove (322).

The method according to claim 1,
The main body 31 is formed with an outer diameter slide guide groove 37 in the Z-axis direction on the upper side of the lower bush coupling groove 31b to which the lower oilless bush 35 is coupled on the lower side, And an upper bushing engagement groove (31a) to which the upper oil-less bush (39) is coupled is provided on an upper side of the upper bush coupling groove (31a).

The method according to claim 1,
The inner diameter bolt 41 is located in the torque groove 320 of the outer diameter guide shaft 32 and is inserted into the screw hole 110 of the main body 11 through the bolt through hole 321, 320) receives the resilient force of the inner diameter spring (40) to return the outer diameter guide shaft (32) after moving along the Z axis.

The method according to claim 1,
The main body 11 is provided with a hammer prevention plate 17 provided with a hammer hole 17a to which the safety ball 16 is engaged in the torque axis attachment groove 114 on the upper side of the torque axis 21 Tap safety torque tool for MC Citi.

The method according to claim 1,
The spring 14 of the main body 11 is coupled with the position control pin 14a on the upper side and the upper side of the position control pin 14a passes through the pin connecting hole 13a of the spring cap 13, And a position projection (14b) for engaging with the rotation preventing groove (12b) formed in the adjusting nut (12) is formed.