KR102513035B1 - A jig tool for forming a thread on the screw - Google Patents

Abstract

The present invention relates to a jig tool for fixing a screw member upright on a workbench, the jig tool includes a screw fixing part including a circular insertion part penetrating in a vertical direction from the center to accommodate the screw member, and cuts in the longitudinal direction at both ends of the insertion part. and a pair of work fixing parts extending from both ends of the screw fixing part, and fixing the pair of work fixing parts to the work table while the screw member is inserted into the insertion part. It is an invention to process the screw member by doing.

Description

A jig tool for forming a thread on a screw member {A JIG TOOL FOR FORMING A THREAD ON THE SCREW}

The present invention relates to a jig tool for fixing a screw member upright on a workbench, the jig tool includes a screw fixing part including a circular insertion part penetrating in a vertical direction from the center to accommodate the screw member, and cuts in the longitudinal direction at both ends of the insertion part. and a pair of work fixing parts extending from both ends of the screw fixing part, and fixing the pair of work fixing parts to the work table while the screw member is inserted into the insertion part. It is an invention to process the screw member by doing.

In general, jigs include standard jigs that unify the dimensions of tools and products used when processing and producing various products, and production jigs that fix the product to a workbench and facilitate the work of the main cutting tool. This is mainly used when manufacturing products in large quantities.

In order to process a screw or drill in which a screw thread is formed on a member in the form of a cylinder having a spherical surface as shown in FIG. do.

In addition, in the process of processing, when the fixed position by the rotational force of the processing machine is shaken due to play or deviating from the center, or when a member having a spherical surface rotates, a uniform thread cannot be formed, resulting in extremely low productivity. .

The above-mentioned operation cannot be fixed by adjusting the exact position unless the worker is skilled, and there is a problem in that productivity decreases when a large amount of products are processed.

Here, in order to process screws or drills having various sizes, a plurality of jigs having sizes suitable for them must be provided, and frequent replacement of jigs according to process changes reduces work efficiency and productivity.

Therefore, there is a need for a jig tool with increased versatility that can be used in response to various sizes and minimizes shaking and vibration during processing in response to various sizes and shapes of screws.

Republic of Korea Utility Model Publication No. 1996-0003044

An object of the present invention is a jig tool that fixes a screw member on which a screw thread is formed to stand upright in the center of a workbench to form a screw thread, minimizes shaking and vibration during processing, and can be used in correspondence with various screw member sizes.

A jig tool for forming a screw thread on a screw member according to the present invention includes a jig tool for fixing the screw member upright on a work table; The jig tool includes a screw fixing portion including a circular insertion portion penetrating in a vertical direction from the center to accommodate the screw member; Incision grooves cut in the longitudinal direction at both ends of the insertion portion; and a pair of work fixing parts extending from both ends of the screw fixing part, wherein the pair of work fixing parts are fixed to the work table, and the thread is processed while the screw member is upright.

According to the present invention, the screw fixing part has elasticity, and the incision groove opens in correspondence with the diameter of the screw member inserted into the insertion part.

According to the present invention, the screw member is press-fitted when inserted into the insertion part.

According to the present invention, it is formed spaced apart from both sides around the insertion part, and a pair of fixing holes penetrating the screw fixing part in the width direction; further includes, the fixing hole is inserted into the incision groove. clamped

According to the present invention, the pair of work fixing parts, through-holes penetrating through the center; each includes, and through the through-holes are screwed to the workbench.

According to the present invention, a discharge hole formed by being depressed in the vertical direction from the bottom of the screw fixing part; further includes.

According to the present invention, the discharge hole discharges chips and cutting oil generated when machining the screw member.

The present invention has the effect of fixing the screw member so as to be accurately upright on the jig tool and improving the accuracy of the process to prevent product defects and increase the efficiency of production.

1 illustrates a state in which a screw thread is formed by processing a screw member.
2 shows a state in which the jig tool of the present invention is installed on a workbench.
Figure 3 shows the jig tool of the present invention.
4 is a view based on the lower surface of the jig tool of the present invention.
Figure 5 shows the state of the insertion portion and the cutting groove according to the insertion of the screw member.
6 is a diagram for explaining a process of fixing a screw member by tightening an incision groove.
7 is a diagram for explaining a process of processing a screw member by combining a work table and a jig tool.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

Terms used in this specification are for describing embodiments, and therefore are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, "comprise" and/or "comprising" means that a stated component, step, operation, and/or element is the presence of one or more other components, steps, operations, and/or elements. or do not rule out additions.

In the present invention, the longitudinal direction is the 'X-axis direction' with reference to FIG. 3, the width direction means the 'Y-axis direction' and the 'Z-axis direction', and the upper or upper end means the upper direction with respect to the Z-axis and the lower Or, the lower end means the opposite direction of the upper side.

The jig tool 100 for forming the screw thread S on the screw member P according to the present invention minimizes shaking and vibration during processing in response to various sizes and shapes of screws, and has versatility that can be used in response to various sizes. As an increasing invention, it is intended to increase the efficiency and productivity of workers through this.

Referring to Figure 2, the jig tool 100 for forming the screw thread (S) in the screw member (P) according to the present invention can be installed and used on a work table (D) such as a lathe of a processing device such as milling, cnc, MCT. there is.

Referring to FIGS. 3 and 4 , the jig tool 100 according to the present invention includes a screw fixing part 110 and a work fixing part 120 .

The screw fixing part 110 is an end portion for fixing the screw member P, which is a processing target, to the jig tool 100 at the center of the jig tool 100, and includes an insertion part 111, a cutting groove 112, a fixing hole 113, and a discharge hole 114.

In addition, the screw fixing part 110 has elasticity and ductility, and for example, rubber, Teflon, etc. may be used, but it is preferable that it can be implemented in other configurations and forms as an example.

Due to the characteristics of elasticity and ductility of the screw fixing part 110, it is possible to significantly reduce product defects by absorbing shock caused by an external force, and has the advantage of increasing the accuracy of the process due to improved gripping force.

Insertion portion 111 is formed through the center of the screw fixing portion 110 in a vertical direction in a circular shape. The insertion portion 111 is preferably formed into a circular shape in which a screw member P is inserted and fixed, and a spherical screw member P is inserted and fixed.

Incision grooves 112 are formed at both ends of the insertion portion 111 to be cut along the longitudinal direction of the screw fixing portion 110 .

The incision groove 112 may be opened according to the elasticity of the screw fixing part 110 and may be opened corresponding to the different diameters of the screw member P inserted into the insertion part 111. Details related to this will be described later.

The fixing holes 113 are formed in a shape that is spaced apart from the insertion part 111 at a predetermined interval, penetrates the screw fixing part 110 in the width direction, and partially penetrates the cutout groove 112 .

In detail, the fixing holes 113 are formed as a pair, spaced apart at a predetermined interval in the longitudinal direction centering on the insertion part 111, and penetrating the screw fixing part 110 in the width direction.

In addition, it is preferable that the fixing hole 113 has a screw thread S so that fixing members 10 and 12 such as bolts can be inserted and screwed together.

The discharge hole 114 is formed by being depressed at regular intervals in the vertical direction from the lower part of the screw fixing part 110 where the insertion part 111 is formed, toward the upper part, and chips, which are by-products of processing introduced through the incision groove 112, CHIP) and cutting oil are discharged.

The working fixing part 120 is formed extending in the longitudinal direction by contacting the end of the screw fixing part 110 in the width direction, and the working fixing part 120 is preferably made of ferromagnetic metal.

The pair of work fixing parts 120 each have a through hole formed with a screw thread S penetrating in the vertical direction, and are screwed through the work table D and the fixing members 10 and 12 to install the jig tool 100. It can be fixed to the workbench (D).

For convenience of description below, the pair of work fixing parts 120 are referred to as the first work fixing part 121 and the second work fixing part 122, and the through holes are the first work fixing part 121 and the second work fixing part 122. 2 It is referred to as a first through hole 1211 and a second through hole 1221 according to the positions formed in the work fixing part 122 .

A process of fixing the screw member P to the jig tool 100 will be described with reference to FIGS. 5 and 6 .

Referring to FIG. 5, when the screw member P is inserted into the insertion part 111, the incision groove 112 widens due to its elasticity, and the screw member P fits into the insertion part 111. will lose

As shown in FIG. 5 (b), as the incision groove 112 widens, the diameter of the insertion part 111 also increases in correspondence with the diameter of the screw member P.

Through this, the diameter of the insertion portion 111 can be adjusted to correspond to the diameter of the screw member P to be inserted, and the original diameter of the insertion portion 111 is preferably smaller than the diameter of the thread member P to be processed. do.

In addition, it is preferable that the insertion portion 111 has an interference fit tolerance so that the screw member P is inserted in an interference fit form so as to correspond to the diameters of various screw members P.

Looking at this, when a screw member P having a certain diameter is inserted into the insertion part 111, the incision groove 112 is opened corresponding to the size of the screw member P, and the screw member inserted into the insertion part 111 ( The size of the insertion part 111 is adjusted to correspond to the diameter, that is, the size of P).

The screw fixing part 110 in which the insertion part 111 and the incision groove 112 are formed is formed of a material having elasticity, and when the screw member P is inserted into the insertion part 111, the incision groove 112 and the insertion part The portion 111 is fixed by contacting the outer circumferential surface of the screw member P with elasticity.

This means that even if the jig tool 100 of the present invention is used alone, rather than having equipment having different sizes to process screw members P of various sizes, it can be processed in correspondence with screw members P having different diameters. Thus, the productivity of the work is increased, and the screw member (P) can be firmly fixed to the position where the screw member (P) must be fixed, thereby increasing the efficiency of the work.

When the screw member P is processed by the processing device in the inserted state, the screw member P is shaken or rotated by the rotational force and external force of the processing device, which may cause difficulty in processing.

A double fixing structure for tightening the incision 112 can be applied to the screw fixing part 110 to prevent the aforementioned problem, and through this, the fixing force can be increased.

In detail, referring to FIG. 6 , the screw member P is inserted into the insertion part 111 through a pair of fixing holes 113 in a state where the diameter of the insertion part 111 and the incision groove 112 are widened. Insert the fixing member (10, 12) in which the screw thread (S) is formed.

In the form in which the fixing members 10 and 12 are inserted into the fixing holes 113, the nuts 11 are coupled to both ends of the fixing members 10 and 12 to screw the nuts 11 toward the outer circumferential direction of the screw fixing part 110. Tighten to advance.

According to the degree of tightening of the nut 11, the incision groove 112 is tightened, the widened end narrows, and at the same time, the diameter of the insertion part 111 also narrows, so that the screw member P is firmly fixed to the insertion part 111 do.

This not only can be firmly fixed in fixing the screw member (P) to be upright on the jig tool 100, but also when processing the screw thread (S) on the screw member (P), the central axis is distorted and the screw thread (S) is not uniform. ) is prevented from being formed, thereby increasing the quality of the product.

In addition, it can be used by simply adjusting the nut 11 to fix the screw member P, so even non-skilled users can use it easily, which has the effect of increasing productivity.

A process of fixing the jig tool 100 of the present invention to the work table D will be described with reference to FIG. 7 .

In the state where the jig tool 100 is located on the work table D as shown in FIG. 2 , the jig tool 100 may be fixed to the work table D as shown in FIG. 7 .

In detail, the screw member P having the screw thread S formed through the first through hole 1211 and the second through hole 1221 formed in the first work fixing part 121 and the second work fixing part 122 It can be coupled to the perforated work table (D) so that it can be screwed through.

First, the positions of the first through holes 1211 and the second through holes 1221 are positioned to coincide with the positions of the perforated holes on the work table D so that the fixing members 10 and 12 can be easily coupled.

Thereafter, the work table (D) is connected to the fixing member (10, 12) or a member that can be coupled to the above-mentioned nut (11) having a step difference formed at the head end through the first through hole (1211) and the second through hole (1221). And the first through hole 1211 and the second through hole 1221 are screwed together to fix the jig tool 100 to the work table D.

This has the advantage of being able to solve the problem that the tool 100 is shaken on the worktable D by an external force and the accuracy of processing is lowered.

In addition, since the jig tool 100 can be accurately positioned at the location where the user is processing, the consistency of processing is maintained, thereby significantly reducing processing errors.

Due to the configuration and features described above, the screw member P can be accurately fixed to the jig tool 100 upright, and the accuracy of the process is improved to prevent product defects and increase production efficiency.

The work fixing part 120 of the present invention has a disadvantage in that it is vulnerable to corrosion due to the characteristics of being exposed to the outside.

In order to prevent this, it is preferable that a coating layer for preventing corrosion is formed on the surface of the work fixing part 120 of the present invention.

The coating layer (not shown) is coated using a coating composition, and the coating layer using the coating composition may exhibit an anti-corrosion effect. Specifically, a coating layer is formed on the surface of the work fixture 120 by the coating layer to prevent external exposure of the work fixture 120, and contains a metal having a higher ionization tendency than the work fixture 120. , Corrosion of the work fixing part 120 can be prevented.

More specifically, the coating composition of the present invention is a siloxane-based compound represented by Formula 1; organic solvents, metal compounds and amine compounds;

[Formula 1]

Here, n is an integer from 1 to 100.

When the coating layer is formed on the surface of the work fixing part 120 using the coating composition of the present invention, the adhesive strength with the work fixing part 120 is excellent, so that the coating layer is not easily peeled off by external force, and the work fixing part 120 ), as it contains a metal compound having a higher ionization tendency, it can exhibit an excellent anti-corrosion effect.

Specifically, the siloxane-based compound not only exhibits excellent adhesion to the work fixing part 120, but also maintains the viscosity of the coating composition at a certain level to increase formability and stability.

The metal compound serves as an erosion and corrosion inhibitor that blocks contact with moisture, salt or oxygen. Here, as the metal compound, a metal having a higher ionization tendency than iron may be used to act as an erosion and corrosion inhibitor. That is, metals or alloys such as aluminum (Al), magnesium (Mg), and zinc (Zn) may be used, and zinc (Zn) is mainly used.

A particle size of the metal compound may be 0.1 to 10 μm. If the particle size of the metal compound is 0.1 μm or more, the manufacturing cost of the metal compound can be reduced, and if the particle size of the metal compound is 10 μm or less, the metal particles can be uniformly dispersed.

The organic solvent is selected from the group consisting of methyl ethyl ketone (MEK), toluene, and mixtures thereof, and preferably methyl ethyl ketone may be used, but is not limited to the above examples.

The amine compound may include a modified aliphatic amine or tertiary amines, and specifically, trimethylamine or aniline may be used. The amine compound may be included in the coating composition to prevent cracking or peeling of the coating film. That is, the effect of preventing cracks or peeling of the coating film due to use by increasing the adhesive strength of the coating layer is excellent.

The coating composition may further include a stabilizer as other additives, and the stabilizer may include a UV absorber, an antioxidant, and the like, but is not limited to the above examples and may be used without limitation.

For forming the coating layer, the coating composition is more specifically a siloxane-based compound represented by Formula 1; organic solvents, metal compounds and amine compounds.

The coating composition may include 40 to 60 parts by weight of the siloxane-based compound represented by Formula 1, 20 to 40 parts by weight of a metal compound, and 5 to 15 parts by weight of an amine compound, based on 100 parts by weight of the organic solvent. In the case of the above range, a synergistic effect is expressed to the extent that the water repellency effect due to the interaction of each component is of critical significance, and when it is out of the above range, the synergistic effect is rapidly reduced or almost nonexistent.

More preferably, the viscosity of the coating composition is 1500 to 1800 cP, and when the viscosity is less than 1500 cP, when applied to the surface of the work fixing part 120, there is a problem that it is not easy to form a coating layer because it flows down, and the coating composition exceeds 1800 cP. In this case, there is a problem in that it is not easy to form a uniform coating layer.

[Preparation Example 1: Preparation of coating layer]

1. Preparation of coating composition

A coating composition was prepared by mixing methyl ethyl ketone with a siloxane-based compound represented by Formula 1, zinc, and trimethylamine:

[Formula 1]

Here, n is an integer from 1 to 100.

A more specific composition of the coating composition is shown in Table 1 below.

TX1 TX2 TX3 TX4 TX5 organic solvent 100 100 100 100 100 polysiloxane 30 40 50 60 70 metal compound 10 20 30 40 50 amine compounds One 5 10 15 20

(unit weight parts)

2. Preparation of coating layer

Typically, the experiment was conducted using aluminum, which is a metal material that is easily corroded, instead of the work fixing part 120.

After coating the coating composition of DX1 to DX5 on one surface of 10 × 10 cm aluminum, it was cured to form a coating layer.

Experimental example

1. Evaluation of surface appearance

Due to the difference in viscosity of the coating composition, after preparing the coating layer, a sensory evaluation was conducted on whether a uniform surface was formed. Evaluation was conducted on whether or not a uniform coating layer was formed, and the evaluation was conducted according to the following criteria.

○: uniform coating layer formation

×: Formation of non-uniform coating layer

TX1 TX2 TX3 TX4 TX5 sensory evaluation × ○ ○ ○ ×

When forming the coating layer, when the viscosity is less than a certain amount, flow occurs on the surface of the work fixing part 120, and after the curing process, it is difficult to form a uniform coating layer in many cases. Accordingly, a problem of lowering the production yield may occur. In addition, even when the viscosity is too high, it is difficult to uniformly apply the composition and it is impossible to form a uniform coating layer.

2. Measurement of corrosion properties

In order to confirm the corrosion characteristics, a corrosion resistance test was conducted using an aluminum plate without a coating layer as a control and an aluminum plate with a coating layer of TX1 to TX5.

The aluminum plate was immersed in a beaker containing 10% by weight of CuCl2 aqueous solution, and the degree of corrosion was checked over time.

If the generation of hydrogen gas is visually confirmed, it will be said to mean that corrosion occurs, and it was confirmed whether or not corrosion occurred until 24 hours had elapsed.

○: corrosion occurs

×: no corrosion

TX1 TX2 TX3 TX4 TX5 control group corrosion occurs ○ × × × × ○

As a result of the experiment, it was confirmed that hydrogen gas was generated shortly after the aluminum plate, which was a control group, was placed in a beaker, and copper was precipitated in less than 1 hour. In the case of TX1, hydrogen gas was generated after 3 hours, and copper precipitation was confirmed after 6 hours.

In the case of other coating layers, corrosion did not occur even after 24 hours, and it was confirmed that there was an excellent effect in preventing corrosion.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also made according to the present invention. falls within the scope of the rights of

P: screw member,
S: thread,
D: Workbench,
10, 12: fixing member,
11 : nut
100: jigsaw,
110: screw fixing part,
111: insertion part,
112: cutting groove,
113: fixed hole,
114: discharge hole,
120: work fixing unit,
121: first work fixing unit,
1211: first through hole,
122: second work fixing unit,
1221: second through hole.

Claims (7)

A jig tool for fixing the screw member upright on the workbench;
The tool,
A screw fixing portion including a circular insertion portion penetrating in a vertical direction from the center to accommodate the screw member;
Incision grooves cut in the longitudinal direction at both ends of the insertion portion; and
Including; a pair of working fixing parts formed by extending from both ends of the screw fixing part,
Fixing the pair of work fixing parts to the work table and processing the screw thread in an upright state of the screw member,
The screw fixing part has elasticity,
Corresponding to the diameter of the screw member inserted into the insertion portion, the cutting groove widens,
When the screw member is inserted into the insertion part, it is press-fitted,
A pair of fixing holes formed spaced apart from both sides around the insertion part and penetrating the screw fixing part in the width direction; further comprising,
In the fixing hole, a fixing member is inserted to tighten the incision groove,
The pair of work fixing parts,
Each includes a through hole penetrating the center;
It is screwed to the workbench through the through hole,
Further comprising a discharge hole formed by being depressed in the vertical direction from the bottom of the screw fixing part
A jig tool for forming a screw thread in a screw member.
delete delete delete delete delete According to claim 1,
The discharge hole is to discharge chips and cutting oil generated when processing the screw member.
A jig tool for forming a screw thread in a screw member.

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