KR102623013B1 - Spring Inner Hook Machining System - Google Patents

Abstract

The present invention relates to a spring inner hook processing system for post-processing a spring (S) formed by spirally winding on a plane centered on a plate-shaped inner hook (S1). In this case, the spring inner hook processing system is used to process the spring inner hook within the cutting groove. The structure has been improved to cut in a fixed position by a cylindrical block, improving cutting precision. In particular, the inner hook is cut while the cutting load gradually increases due to the inclination angle of the floating cutter, so the life of the floating cutter is extended for a long time and the hardness is increased. The main components include a main body (10), a multi-body (20), a cutting groove (30), a floating body (40), and a floating cutter (50) so that the high inner hook can be cut without a separate preheating process. .

Description

Spring Inner Hook Machining System {Spring Inner Hook Machining System}

The present invention relates to a spring inner hook processing system, and more specifically, the structure of the spring inner hook is improved so that it is cut in a state in which the spring inner hook is fixed in position by a cylindrical block within the cutting groove, thereby improving cutting precision, and in particular, the inclination angle of the floating cutter. This relates to a spring inner hook processing system that cuts the inner hook as the cutting load gradually increases due to the road, thereby extending the life of the floating cutter and cutting an inner hook with high hardness without a separate preheating process.

In general, springs are products made to take advantage of the elasticity and repulsion of materials by taking advantage of their elasticity and repulsion. They are used in a variety of industries throughout the industry. From small household toys to large automobile and aviation industries, springs are widely used. It is infinite.

Here, springs are continuously produced by forming the material into a spiral shape and then cutting it at a predetermined position. However, due to the nature of the material, the hardness is high, so the cutting process is difficult, and the quality of the cut surface deteriorates, requiring a post-process to refine the cut surface. It is a situation that must be passed.

Accordingly, in the previously disclosed registered patent No. 10-1517687, a cutting tool for coil springs consisting of a main body mounted on a holder and a cutting part formed integrally with the main body and applying a torsional shear load to the coil spring, The cut portion includes a front portion that extends across both side portions facing each other and forms a vertical surface and an inclined surface with respect to both side portions, a bottom portion extending from the front portion while connecting the two side portions, and the front portion and A technology has previously been proposed in which the bottom surface portion includes a cut edge portion that meets and forms a corner, and a curved surface is formed on the bottom portion near the cut edge portion so that the intersection angle with the front portion is an acute angle.

However, the prior art is intended to effectively cut the coil spring only with a cutting bite, but this is a technology that is limited to helical springs that expand in the axial direction, and can be applied to springs that are formed to expand in diameter from the center to the outer diameter. There is no such thing.

In other words, the spring is manufactured by clamping the inner hook at the center and winding it in a coil shape on a flat surface. Afterwards, the inner hook must be cut to a predetermined length, but the cutting space is narrow during the cutting operation, making it difficult to enter the cutter. Also, due to the high hardness of the material, the cutting process was delayed as the cutting area was heated to a high temperature (700~800℃) before cutting, and in particular, the quality of the coil spring deteriorated due to thermal deformation.

Accordingly, the present invention was conceived to solve the above-mentioned problems, and the structure was improved so that the spring inner hook is cut in a state in which the spring inner hook is fixed in position by a cylindrical block within the cutting groove, thereby improving cutting precision, and in particular, the inclination angle of the floating cutter. The purpose is to provide a spring inner hook processing system that can extend the life of the floating cutter by cutting the inner hook as the cutting load gradually increases due to the road, and can cut inner hooks with high hardness without a separate preheating process. there is.

To achieve this purpose, the features of the present invention are,

In the spring inner hook processing system for post-processing the spring (S) formed by spirally winding on a plane around the plate-shaped inner hook (S1),

A main body (10) on which a loading surface (12) is formed so that the spring (S) is seated;

A multi-body (20) installed on the loading surface (12) of the main body (10) and inserted into the inner peripheral surface of the spring (S), and having a press hole (22) formed in the longitudinal direction therein;

It is opened to connect the outer peripheral surface of the multibody 20 and the inner peripheral surface of the press hole 22 to accommodate the inner hook S1 of the spring S, and a fixed cutter 32 is formed at a position in contact with the press hole 22. cutting groove (30);

A movable body (40) installed on the upper part of the main body (10), raised and lowered by a driving unit, and provided with a cylindrical block (42) that is inserted into the cutting groove (30) and closely fixes the inner hook (S1); and

A moving cutter (50) installed on the moving body (40) and moving downward together with the cylindrical block (42) and engaging the fixed cutter (32) to cut the inner hook (S1). .

At this time, the floating cutter 50 is formed at an inclined angle, and when moving downward together with the cylindrical block 42, the cutting area is gradually expanded at an inclined angle based on the cutting start point that makes point contact with the inner hook (S1). Do it as

In addition, the cyblock 42 is,

A reference surface (42a) formed on one surface in contact with the cutting groove (30),

It includes a pressing surface (42b) formed on the other side opposite to the reference surface (42a) to press the inner hook (S1),

The pressing surface 42b is formed at an inclined angle so that the thickness of the cylindrical block 42 increases toward the press hole 22,

When the cylindrical block 42 enters the cutting groove 30, the area of the inner hook S1 corresponding to the fixed cutter 32 is locally pressed to the inner wall of the cutting groove 30 due to the inclination angle of the pressing surface 42b. It is characterized in that it is provided to be closely fixed.

In addition, a gap maintenance module 24 is provided on the outer peripheral surface of the multibody 20 to guide the spring (S) loading position,

The gap maintenance module 24 is,

A load hole (24a) formed laterally on the outer peripheral surface of the multibody (20),

An elastic sleeve (24c) inserted into the rod hole (24a) and having a C-shaped cross-sectional shape by a cut line (24b) formed in the longitudinal direction,

It includes an expansion bolt (24e) that is screwed to the multibody (20) so as to be perpendicular to the rod hole (24a) and is inserted into the cut line (24b) to form an inclined tip (24d) to expand the diameter of the elastic sleeve (24c). do,

After adjusting the protruding position of the elastic sleeve (24c) to contact the inner diameter of the spring (S) inserted into the multibody (20), and then tightening the expansion bolt (24e), the diameter of the elastic sleeve (24c) expands and the rod hole ( It is characterized in that it is provided to be pressed and fixed to 24a).

In addition, a pad 34 is installed on the loading surface 12 corresponding to the opposite side of the cutting groove 30 to locally support the bottom of the spring S,

One side of the spring (S) where the inner hook (S1) is formed is supported by the pad (34) at a lower inclination angle than the other side.

In addition, a push piece 44 is installed on the moving body 40 and moved in the longitudinal direction along the rod rod 44a and supported downward by an elastic body 44b,

The push piece 44 is provided to press the upper surface of the spring S when the moving body 40 moves downward.

According to the above configuration and operation, the present invention improves the cutting precision by improving the structure so that the spring inner hook cuts in a state in which the spring inner hook is fixed in position by a cylindrical block within the cutting groove. In particular, the cutting load gradually decreases due to the inclination angle of the floating cutter. Since the inner hook is cut as it increases, the lifespan of the floating cutter is extended, and an inner hook with high hardness can be cut without a separate preheating process.

Figure 1 is a perspective view showing the overall spring inner hook processing system according to an embodiment of the present invention.
2 to 3 are diagrams showing the operating state of the spring inner hook processing system according to an embodiment of the present invention.
Figure 4 is a configuration diagram showing the main portion of the spring inner hook processing system according to an embodiment of the present invention in plan.
Figure 5 is a configuration diagram showing the pad of the spring inner hook processing system according to an embodiment of the present invention.

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

Figure 1 is a perspective view showing the overall spring inner hook processing system according to an embodiment of the present invention, and Figures 2 and 3 are configuration diagrams showing the operating state of the spring inner hook processing system according to an embodiment of the present invention. Figure 4 is a configuration diagram showing the main part of the spring inner hook processing system according to an embodiment of the present invention in a plan view, and Figure 5 is a configuration diagram showing the pad of the spring inner hook processing system according to an embodiment of the present invention.

The present invention relates to a spring inner hook processing system for post-processing a spring (S) formed by spirally winding on a plane centered on a plate-shaped inner hook (S1). In this case, the spring inner hook processing system is used to process the spring inner hook within the cutting groove. The structure has been improved to cut in a fixed position by a cylindrical block, improving cutting precision. In particular, the inner hook is cut while the cutting load gradually increases due to the inclination angle of the floating cutter, so the life of the floating cutter is extended for a long time and the hardness is increased. The main components include a main body (10), a multi-body (20), a cutting groove (30), a floating body (40), and a floating cutter (50) so that the high inner hook can be cut without a separate preheating process. .

The main body 10 according to the present invention has a loading surface 12 formed so that the spring S is seated.

The main body 10 is a component that seats and supports the spring (S), and is disposed opposite to the movable body 40, which will be described later, and the spring (S) is located between the main body 10 and the movable body 40. It is loaded.

In addition, the multibody 20 according to the present invention is installed on the loading surface 12 of the main body 10 and inserted into the inner peripheral surface of the spring S, and a press hole 22 is formed in the longitudinal direction therein.

The multibody 20 is a configuration that determines the loading position of the spring (S) together with the cutting groove 30, which will be described later, and the inner hook (S1) is cut while the spring (S) is inserted into the multibody (20). It is provided to be accommodated in the groove 30.

In addition, the press hole 22 is a space where the flow cutter 50 is inserted into the cylindrical block 42, which will be described later, and penetrates the multi-body 20 downward, and is an inner hook cut by the flow cutter 50. The discarded portion of (S1) is discharged downward through the press hole (22).

In addition, the cutting groove 30 according to the present invention is opened to connect the outer peripheral surface of the multibody 20 and the inner peripheral surface of the press hole 22 to receive the inner hook (S1) of the spring (S), and the press hole (22) A fixed cutter 32 is formed at a position in contact with.

The cutting groove 30 is open in the lateral direction of the multibody 20, and the inner surface of the cutting groove 30 and the inner surface of the press hole 22 are interconnected at a right angle to form a fixed cutter 32. (32) is provided to cut the inner hook (S1) by engaging with a floating cutter (50) to be described later.

At this time, the cutting groove 30 is formed in an expanded size compared to the thickness of the inner hook (S1), that is, the inner hook (S1) and the cylindrical block 42, which will be described later, are accommodated together in the cutting groove 30. , the inner hook (S1) is provided to be pressurized and fixed by the cylindrical block (42).

In addition, the movable body 40 according to the present invention is installed on the upper part of the main body 10, is raised and lowered by a driving unit, and is inserted into the cutting groove 30 to closely fix the inner hook (S1). ) is provided.

In the enlarged view of FIG. 2, the interblock 42 is formed on a reference surface (42a) formed on one surface in surface contact with the cutting groove 30 and on the other surface opposite to the reference surface (42a) to form an inner hook (S1). ) includes a pressing surface (42b) that pressurizes.

In addition, the pressing surface 42b is formed at an inclined angle so that the thickness of the cylindrical block 42 increases toward the press hole 22.

Accordingly, when the cylindrical block 42 enters the inside of the cutting groove 30, the area of the inner hook S1 corresponding to the fixed cutter 32 is locally damaged by the inner wall of the cutting groove 30 due to the inclination angle of the pressing surface 42b. As it is provided to be closely fixed to the inner hook (S1), lifting phenomenon is prevented on the fixed cutter (32), thereby improving cutting precision and cutting efficiency.

In addition, a push piece 44 is installed on the moving body 40 and moved in the longitudinal direction along the rod rod 44a and supported downward by an elastic body 44b.

When the moving body 40 moves downward, the mill piece 44 presses the upper surface of the spring S, thereby firmly fixing the spring S in the correct position, thereby improving the cutting precision of the inner hook S1.

In addition, the floating cutter 50 according to the present invention is installed on the moving body 40, moves downward together with the cylindrical block 42, and engages the fixed cutter 32 to cut the inner hook (S1).

In the enlarged views of FIGS. 1 and 3, the floating cutter 50 is formed at an inclined angle, and when moving downward together with the cylindrical block 42, the cutting area gradually increases based on the cutting start point that makes point contact with the inner hook (S1). It is provided to expand at an inclination angle.

In this way, the structure is improved so that the cutting load is gradually increased due to the inclination angle of the floating cutter 50, thereby extending the life of the floating cutter 50, and the inner hook (S1) with high hardness (hardness HRC 30 to 35) is used in the preheating process ( It has the advantage of being able to cut without temperature (700~800℃).

In Figure 4, a gap maintenance module 24 is provided on the outer peripheral surface of the multibody 20 to guide the loading position of the spring (S).

The gap maintenance module 24 has a rod hole 24a formed laterally on the outer peripheral surface of the multibody 20, and is inserted into the rod hole 24a and has a cut line 24b formed in the longitudinal direction. An elastic sleeve (24c) having a cross-sectional shape is screwed to the multibody (20) so as to be perpendicular to the rod hole (24a), and an inclined tip (24c) is inserted into the incision line (24b) to expand the diameter of the elastic sleeve (24c). 24d) includes an expansion bolt (24e) formed.

At this time, the elastic sleeve (24c) is disposed on the opposite side of the cutting groove (30), and when the inner peripheral surface of the spring (S) is pressed and transferred in one direction by the elastic sleeve (24c), the inner hook (S1) is moved to the inside of the cutting groove (30). It adheres closely and is loaded into place.

Also, as the inner diameter of the spring (S) becomes larger, the protruding distance of the elastic sleeve (24c) expands, and as the inner diameter of the spring (S) becomes smaller, the protruding distance of the elastic sleeve (24c) is adjusted to decrease.

Looking at the state of setting the spring (S) loading position using the elastic sleeve (24c), the protruding position of the elastic sleeve (24c) is adjusted to contact the inner diameter of the spring (S) inserted into the multibody (20), Afterwards, when the expansion bolt (24e) is tightened, the diameter of the elastic sleeve (24c) expands and is provided to be pressed and fixed to the rod hole (24a).

In Figure 5, a pad 34 is installed on the loading surface 12 corresponding to the opposite side of the cutting groove 30 to locally support the bottom surface of the spring S.

In this way, one area of the spring (S) where the inner hook (S1) is formed by the pad (34) is supported at a lower inclination angle than the other area, so when a cutting load is applied in the downward direction by the floating cutter (50), the inner hook (S1) is formed. The lifting phenomenon of one area of the spring (S) where (S1) is placed is prevented.

10: main body 20: multibody
30: Cutting groove 40: Flexible body
50: Flow cutter

Claims (6)

In the spring inner hook processing system for post-processing the spring (S) formed by spirally winding on a plane around the plate-shaped inner hook (S1),
A main body (10) on which a loading surface (12) is formed so that the spring (S) is seated; A multi-body (20) installed on the loading surface (12) of the main body (10) and inserted into the inner peripheral surface of the spring (S), and having a press hole (22) formed in the longitudinal direction therein; It is opened to connect the outer peripheral surface of the multibody 20 and the inner peripheral surface of the press hole 22 to accommodate the inner hook S1 of the spring S, and a fixed cutter 32 is formed at a position in contact with the press hole 22. cutting groove (30); A movable body (40) installed on the upper part of the main body (10), raised and lowered by a driving unit, and provided with a cylindrical block (42) that is inserted into the cutting groove (30) and closely fixes the inner hook (S1); And a moving cutter (50) installed on the moving body (40), moving downward together with the cylindrical block (42) and engaging the fixed cutter (32) to cut the inner hook (S1);
A push piece 44 is installed on the moving body 40 and moved in the longitudinal direction along the rod rod 44a and supported downward by an elastic body 44b,
The spring inner hook processing system is characterized in that the push piece (44) is provided to press the upper surface of the spring (S) when the moving body (40) moves downward. According to clause 1,
The floating cutter 50 is formed at an inclined angle, and when moving downward together with the cylindrical block 42, the cutting area is gradually expanded at an inclined angle based on the cutting start point that makes point contact with the inner hook (S1). Spring inner hook processing system. According to claim 1 or 2,
The cyblock 42 is,
A reference surface (42a) formed on one surface in contact with the cutting groove (30),
It includes a pressing surface (42b) formed on the other side opposite to the reference surface (42a) to press the inner hook (S1),
The pressing surface 42b is formed at an inclined angle so that the thickness of the cylindrical block 42 increases toward the press hole 22,
When the cylindrical block 42 enters the cutting groove 30, the area of the inner hook S1 corresponding to the fixed cutter 32 is locally pressed to the inner wall of the cutting groove 30 due to the inclination angle of the pressing surface 42b. A spring inner hook processing system characterized in that it is provided to be closely fixed. According to claim 1 or 2,
A gap maintenance module 24 is provided on the outer peripheral surface of the multibody 20 to guide the spring (S) loading position,
The gap maintenance module 24 is,
A load hole (24a) formed laterally on the outer peripheral surface of the multibody (20),
An elastic sleeve (24c) inserted into the rod hole (24a) and having a C-shaped cross-sectional shape by a cut line (24b) formed in the longitudinal direction,
It includes an expansion bolt (24e) that is screwed to the multibody (20) so as to be perpendicular to the rod hole (24a) and is inserted into the cut line (24b) to form an inclined tip (24d) to expand the diameter of the elastic sleeve (24c). do,
After adjusting the protruding position of the elastic sleeve (24c) to contact the inner diameter of the spring (S) inserted into the multibody (20), and then tightening the expansion bolt (24e), the diameter of the elastic sleeve (24c) expands and the rod hole ( A spring inner hook processing system, characterized in that it is provided to be pressed and fixed to 24a). According to claim 1 or 2,
A pad 34 is installed on the loading surface 12 corresponding to the opposite side of the cutting groove 30 to locally support the bottom of the spring S,
A spring inner hook processing system, characterized in that one area of the spring (S) where the inner hook (S1) is formed by the pad (34) is supported at a lower inclination angle than the other area. delete