KR102346925B1 - Bolt screw inspection apparatus capable of preventing driver from being overloaded - Google Patents

Abstract

Provided is a roll inspection device capable of preventing overload of a driving unit, comprising: a driving unit; a first rotating member rotated by the driving unit; a second rotating member receiving the rotational force of the first rotating member at one side, and formed with an inlet groove into which a screw member for inspection is drawn at the other side; a female screw part screw-rotated with a screw thread of the screw member for inspection to be screw-coupled when the screw member for inspection is drawn into the inlet groove; a rotating wheel protruding in a disk shape radially outward from the outer circumferential surface of the first rotating member; a plurality of retainers passing through the thickness of the rotating wheel and arranged at a predetermined angle from the rotation center of the rotating wheel; and a plurality of friction members disposed on each retainer.

Description

Preload inspection device that can prevent overload of the driving part

The present invention relates to a rolling inspection device capable of preventing overload of a driving part, and more particularly, when an overload occurs in the driving part in the reverse direction due to a contamination source of the rolling part, the overload prevention of the driving part is implemented so that the rotational force of the driving part is not transmitted to the inspection part. It relates to a precursor inspection device.

In general, motors for injection molding machines or motors used in various machines install a pulley on the motor shaft to transmit power using a belt. In this case, there is a problem in that the motor is overloaded, which causes the motor to be damaged.

As described above, when the motor is damaged due to overload, the work line is stopped, resulting in enormous damage, and unnecessary expenditure and work time are wasted by replacing the damaged motor.

For example, as a component for screw coupling or screw coupling, tapping is performed using a tap to process a female thread on the inner circumferential surface, and a die using a die to machine a male screw on the outer circumferential surface (thread) processing is performed.

Tapping can be done by hand, or on a drilling machine, lathe, milling machine, etc.

In both of the above two processes, burrs or foreign substances are deposited on the threads to cause defects in screw coupling between parts, and the threads are cleaned by performing a chasing process to remove them.

Here, a roll tester is used to measure the quality of the surface of the screw thread during mass production of bolts. Preliminary inspection machine is to physically judge whether the rolling part is well-formed.

In particular, when the driving part of the rolling tester is rotated, the driving part is damaged when an overload is transferred to the driving part in the reverse direction because rotation is impossible due to a defect in the rolling part of the bolts or contamination on the surface of the rolling part.

Accordingly, the present invention has been devised to solve the above problems, and it is an object of the present invention to prevent the driving part from being damaged when an overload occurs in the driving part during rotation of the driving part for measuring the quality of the surface of the screw thread.

Rolling inspection apparatus capable of preventing overload of the driving unit according to an embodiment of the present invention includes a driving unit, a first rotating member rotated by the driving unit, one side receives the rotational force of the first rotating member, and a screw member for inspection at the other side A second rotating member having an inlet groove into which is introduced, a female threaded portion screwed with a screw thread of the inspection screw member when the inspection screw member is drawn into the inlet groove, and screw-coupled from the outer circumferential surface of the first rotating member A rotating wheel protruding radially outward in a disk shape, a plurality of retainers penetrating through the thickness of the rotating wheel and arranged at a predetermined angle from a rotation center of the rotating wheel, and a plurality of friction members disposed in each retainer; can do.

A plurality of seating grooves formed on the second rotation member and formed on the inlet groove side with respect to the rotation wheel along the longitudinal direction of the first rotation member, in which a portion of the outer circumferential surface of each friction member is seated, is formed. can be

It may include an elastic member for elastically pressing the friction member toward the second rotation member.

A center point of the seating groove may be disposed on an orbital circle on which the friction member is rotated.

The inclination angles of the first inclined portion and the second inclined portion at both ends crossing the orbit circle of the seating groove may be formed to be different from each other.

An inclination angle of the first inclined portion may be at least 20° smaller than an inclination angle of the second inclined portion.

One end of the elastic member may be positioned on the pressing member for pressing the friction member, and the other end may be positioned on the support member disposed to surround the outer circumferential surface of the first rotating member.

The rolling inspection apparatus capable of preventing overload of the driving part according to an embodiment of the present invention prevents damage to the driving part when an overload occurs in the driving part that transmits rotational power by connecting the shaft to the shaft in various industrial machines and instruments, such as electric motors. can be prevented

In addition, in the process of rotating the driving unit to check the failure or failure of the rolling part of bolts with a simple configuration and screwing to the rolling part of the bolts, when an overload occurs conversely due to a defect in the rolling part or contaminants on the surface, the It has the effect of not only preventing damage to the driving part by preventing the driving part from being overloaded in advance, but also providing a shock mitigating function for absorbing sudden load fluctuations.

In addition, even if there is a risk of overloading the driving part if there is a foreign substance in the rolling part of the screw member for inspection or there is a problem with the shape, the production line can be continuously operated without stopping the entire production line, so productivity is improved has the effect of being

1 schematically shows a preload inspection apparatus capable of preventing overload of a driving unit according to an embodiment of the present invention.
2 is an enlarged view of the first and second rotation members of FIG. 1 .
3 is a view showing a state when viewed from the front of the second rotating member.
4 schematically illustrates a state in which the friction member of the first rotation member is in contact with the seating groove of the second rotation member.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. Spatially relative terms should be understood as terms including different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

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

FIG. 1 schematically shows a rolling inspection apparatus capable of preventing overload of a driving unit according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the first rotating member and the second rotating member of FIG. 1 .

1 and 2 , the rolling inspection apparatus capable of preventing overload of the driving unit according to an embodiment of the present invention includes a driving unit 100 , a first rotating member 110 , a second rotating member 120 , and a female screw part. 122 , a rotating wheel 111 , a retainer 111a and a friction member 112 may be included.

The driving unit 100 may be a forward/reverse rotation motor that generates rotational force. The driving unit 100 may be screw-coupled or loosened to a screw member T for inspection to be described later during forward rotation or reverse rotation. Here, the direction of rotation of the driving unit 100 is not limited thereto since the thread formation direction of the screw member T for inspection may be variously implemented according to a right-hand thread or a left-hand thread.

The driving unit 100 repeatedly performs fastening and separating operations for the inspection screw member T as described later through the forward and reverse rotation as described above.

The driving unit 100 may be provided so as to support rotation with respect to the outer circumferential surface of the driving unit 100 by having separate bearings B located at a plurality of places so as to be rotatably supported from the outside. For this reason, the driving unit 100 is able to rotate while maintaining the horizontal.

The first rotation member 110 is formed at an end along the longitudinal direction of the driving unit 100 , and may rotate integrally with the driving unit 100 .

The second rotation member 120 receives the rotational force of the first rotation member 110 through one side, and the other side may include an inlet groove 121 into which the inspection screw member T is introduced. The lead-in groove 121 allows the screw member T for inspection, which will be described later, to be rotated by being screw-coupled to each other in a retracted state.

In other words, when the test screw member T is fastened to the female screw portion 122 of the inlet groove 121, the second rotation member 120 in the process of mutually screw rotation with the screw thread S of the test screw member T. ) is smoothly rotated to enable linear movement in the fastening direction, and on the contrary, when the driving unit 100 is rotated in reverse, the female threaded part 122 of the inspection screw member T and the inlet groove 121 is separated from each other. Linear movement along the direction becomes possible. Of course, if a reaction force in the opposite direction to the rotation in one direction is not generated from the second rotation member 120 during this process, it may be determined that there is no abnormality in the thread S of the screw member T for inspection.

A rotation wheel 111 protruding in the shape of a disk radially outward from the outer peripheral surface of the first rotation member 110 may be included.

A plurality of retainers 111a arranged at a predetermined angle with respect to the rotation center of the rotation wheel 111 may be provided to penetrate the thickness of the first rotation member 110 . The retainer 111a may perform a function of maintaining the plurality of friction members 112 seated and rotatable.

In other words, the retainer 111a may refer to one of the thrust bearing structures that maintain the plurality of friction members 112 to rotate.

3 is a view showing the second rotating member viewed from the front.

As shown in FIG. 3 , a plurality of seating grooves 120a may be formed in the second rotation member 120 .

The plurality of seating grooves 120a are formed in the second rotation member 120 , and are formed on the side of the inlet groove 121 with respect to the rotation wheel 111 along the longitudinal direction of the first rotation member 110 , respectively. A portion of the outer peripheral surface of the friction member 112 of the seated. The interaction between the friction members 112 respectively disposed in the plurality of seating grooves 120a will be described later.

An elastic member 113 that elastically supports the friction member 112 to be pressed toward the second rotation member 120 may be included. One end of the elastic member 113 may be located in the pressing member 114 for pressing the friction member 112 , and the other end may be located in the supporting member 115 disposed to surround the outer circumferential surface of the first rotating member 110 . .

The elastic member 113 may perform a function of pressing the friction member 112 to maintain a state in which the friction member 112 is in contact with the inside of the seating groove 120a. In other words, when an overload does not occur from the female screw part 122 of the second rotation member 120 , the plurality of friction members 112 are attached to each of the seating grooves 120a by the elastic pressure of the elastic member 113 . to remain in contact. For this reason, the rotational force transmission between the first rotation member 110 and the second rotation member 120 is maintained.

The center point of each seating groove 120a may be disposed on the orbital circle O on which the friction member 112 is rotated. The orbit circle O refers to a trajectory in which the second rotation member 120 is rotated in the process of being rotated about the rotation axis, and is rotated and rotated with the circle center of each seating groove 120a on the trajectory. make rotation possible.

4 schematically shows a state in which the friction member of the first rotation member is in contact with the seating groove of the second rotation member, both ends intersecting on the orbit circle O of each seating groove 120a as shown. A first inclined portion 120b and a second inclined portion 120c of the may be provided.

The first inclined portion 120b and the second inclined portion 120c may refer to an area in which the driver 100 is locked or released when the driving unit 100 rotates forward or backward, respectively.

For example, if it is assumed that the female screw part 122 is fastened to the screw member T for inspection during forward rotation of the driving unit 100 , the female screw part 122 is rotated by the rotation of the driving unit 100 to the screw member for inspection. When it is fastened to (T), it linearly moves along the longitudinal direction in the direction in which it is fastened, and in this process, the friction member 112 is caught by the first inclined portion 120b according to the rotational force of the first rotating member 110 . Since it rotates in a fixed state, it means a state in which the rotational force of the first rotating member 110 can be transmitted to the second rotating member 120 .

On the contrary, when the female screw part 122 is separated from the inspection screw member T during the reverse rotation of the driving unit 100 , the female screw part 122 is the inspection screw member T by the reverse rotation of the driving unit 100 . ) and at the same time it is separated from the linear movement in the direction of separation, and in this process, it rotates in a state of being easily released from the second inclined part 120c, so that the female thread part 122 is separated from the screw member T for inspection. it becomes possible

In addition, the inclination angles of the first inclined portion 120b and the second inclined portion 120c are formed to be different from each other, and the standards for determining the inclination angles of the first inclined portion 120b and the second inclined portion 120c are applied. When defined as being perpendicular to the plane of the second rotation member 120 , it may mean each angle with respect to the perpendicular.

The angle of inclination of the first inclined portion 120b may be at least 20° smaller than the angle of the second inclined portion 120c.

That is, when the female screw part 122 is fastened to the inspection screw member T during the forward rotation of the driving unit 100 as described above, by the rotation of the driving unit 100, the female screw unit 122 is the inspection screw member ( While it is fastened to T), it linearly moves in the fastening direction, but there is a defective part of deformity in the thread (S) of the inspection screw member (T), or due to a contamination source on the surface, the second rotation member (120) Overload may occur. At this time, due to the reverse rotation overload generated from the second rotation member 120 , a force is generated to cause the friction member 112 to deviate from the first inclined portion 120b , which causes the friction member 112 to be separated from the seating groove 120a. That is, it means a state in which the transmission of the rotational force between the first rotation member 110 and the second rotation member 120 is released. For this reason, since it is prevented that an overload is generated in the gear parts of the driving unit 100, damage to parts such as gear teeth for power transmission is prevented.

In addition, by forming the inclination angle of the first inclined portion 120b or the second inclined portion to be steep or gentle, the design may be variously designed according to the installation environment according to the magnitude of the overload generated from the second rotating member 120 .

Regarding the inclination angles of the first inclined portion 120b and the second inclined portion 120c, when the inclination angle of the first inclined portion 120b is 70°, the inclination angle of the second inclined portion 120c is 50 °, and in this case, the rapidly inclined region of the first inclined portion 120b enters the entry section during the forward rotation test of the driving unit 100 so that the friction member 112 is separated from the seating groove 120a. Although it is difficult, a stronger rotational force can be transmitted, whereas in the gently inclined region of the second inclined portion 120c, the friction member 112 is relatively easy to be separated from the seating groove 120a as compared to the former case.

That is, when the friction member 112 applies a rotational force to the first inclined portion 120b, the friction member 112 is separated from the seating groove 120a only when it exceeds a predetermined pressing force value, and the driving unit 100 is in vain. By rotating the friction member 112 only when the predetermined pressing force is generated, the friction member 112 is separated from the seating groove 120a, thereby preventing the driving unit 100 from being damaged.

On the other hand, when the driving unit 100 performs the reverse rotation again, the friction member 112 transmits the rotational force toward the second inclined portion 120c from the inspection screw member T to which the female screw portion 122 is fixed. can be easily restored.

Thereafter, the component supply unit (G) is to remove the screw member (T) for inspection, to continuously perform production.

In other words, even if an overload occurs in the driving unit 100 , since the inspection screw member T is removed by the component supply unit G, production can be continued without any additional measures such as stopping the production line.

Therefore, in the electric motor inspection apparatus capable of preventing overload of the driving unit according to an embodiment of the present invention, in various industrial machines and instruments such as electric motors, when an overload occurs in the driving unit that transmits rotational power by connecting the shaft to the shaft, the driving unit damage can be prevented.

In addition, in the process of rotating the driving unit to check the failure or failure of the rolling part of bolts with a simple configuration and screwing to the rolling part of the bolts, when an overload occurs conversely due to a defect in the rolling part or contaminants on the surface, the It has the effect of not only preventing damage to the driving part by preventing the driving part from being overloaded in advance, but also providing a shock mitigating function for absorbing sudden load fluctuations.

In addition, even if there is a risk of overloading the driving part if there is a foreign substance in the rolling part of the inspection screw member or there is a problem with the shape, the production line can be continuously operated without stopping the entire production line, thereby improving productivity has the effect of being

As described above, the louver opening and closing device according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings described above, and within the scope of the claims, it is common in the technical field to which the present invention pertains. Various implementations are possible by those with the knowledge of

100: drive unit
110: first rotation member
111: rotating wheel
111a: retainer
112: friction member
113: elastic member
120: second rotation member
120a: seating groove
120b: first inclined portion
120c: second inclined portion
121: inlet groove
122: female thread part

Claims (7)

drive unit;
a first rotating member rotated by the driving unit;
a second rotating member having one side receiving the rotational force of the first rotating member, and having an inlet groove into which the inspection screw member is drawn at the other side;
When the inspection screw member is drawn into the inlet groove, the screw thread and the screw rotation of the screw member for inspection and a female screw is screw-coupled;
a rotating wheel protruding in a circular plate shape radially outward from the outer circumferential surface of the first rotating member;
a plurality of retainers passing through the thickness of the rotation wheel and arranged at a predetermined angle from the rotation center of the rotation wheel;
a plurality of friction members disposed on each of the retainers; and
A plurality of seating grooves formed on the second rotation member, formed on the inlet groove side with respect to the rotation wheel along the longitudinal direction of the first rotation member, and in which a portion of the outer peripheral surface of each friction member is seated; A precursor inspection device capable of preventing overload of the driving part. delete According to claim 1,
and an elastic member for elastically urging the friction member toward the second rotation member. 4. The method of claim 3,
The center point of the seating groove is disposed on the orbital circle on which the friction member is rotated, a rolling inspection device capable of preventing overload of the driving unit. 5. The method of claim 4,
A rolling inspection device capable of preventing overload of the driving unit, wherein the inclination angles of the first and second inclined portions at both ends intersecting on the track circle of the seating groove are different from each other. 6. The method of claim 5,
An inclination angle of the first inclination part is formed to be at least 20° smaller than an inclination angle of the second inclination part, the driving part overload prevention apparatus possible. 4. The method of claim 3,
One end of the elastic member is located in the pressing member for pressing the friction member, the other end is located in the support member disposed to surround the outer circumferential surface of the first rotating member, the driving unit overload prevention device possible.

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