JPH0432168Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) The present invention is a double-headed opening in which a bevel is formed on the end face of the steel material in order to improve the mechanical strength of the weld between H-section steel. It relates to a pre-processing device.

(Prior art) In order to improve the mechanical strength of the weld between H-section steels, beveling is performed on the end faces of H-section steels, as shown in Fig. 7. Arc-shaped notches c, c are formed at both joining corners with flange portions b _{1 ,} b ₂ , and inclined chamfered surfaces d, d are formed on the end faces of both flange portions _b 1 , b 2 .

A double-headed beveling device that simultaneously performs this beveling on both flanges b ₁ and b ₂ of the end face of the H-section steel is disclosed in Japanese Patent Publication No. 58-22284, for example. , a hemispherical cutter for cutting arc-shaped notches c and c into each of a pair of pillars erected on a base, and sloping chamfered surfaces d and d.
A cutting section equipped with a conical cutter for cutting is provided so as to be able to move up and down, and by holding the end of the H-shaped steel between the pair of supports and moving both cutting sections up and down, Both flange portions b ₁ and b ₂ of the end face of the H-shaped steel can be simultaneously and efficiently grooved. In this case, one of the pillars has
A sliding mechanism was provided that made it possible to adjust the distance between the flange portions b ₁ and b ₂ of the H-beam and the other support column in accordance with the width dimension between the flange portions b 1 and b 2 of the H-section steel.

However, if the shape of the end face of the H-beam is perpendicular to the longitudinal direction of the H-beam, that is, if the end face is parallel to the supports, beveling is performed on both flanges b ₁ and b ₂ of the end face at the same time. However, as shown in Figures 8 and 9, if the end face of the H-section steel is inclined, that is, the end face is tilted and not parallel to the space between the supports, both flanges of the end face It is impossible to perform beveling on portions b ₁ and b ₂ at the same time. Therefore, in the case of an H-section steel with an inclined end face, it is necessary to perform beveling on each flange part b ₁ and b ₂ of the end face in two separate processes, and one of the H-section steels has an inclined surface. The beveling process takes more than twice as long as when the end faces are parallel, and is inefficient.

Furthermore, in the beveling device described in JP-A No. 62-68214, each flange portion b ₁ of the H-shaped steel,
The pair of holding parts that hold b ₂ and the pair of cutting parts that perform beveling on each flange part b ₁ and b ₂ of the H-shaped steel are all separate parts, and one holding part is connected to the other holding part. The structure is such that each cutting section is movable toward and away from the cutting section, and one cutting section is movable in a direction perpendicular to the direction of approach and separation. Therefore, by moving one of the cutting parts in a direction perpendicular to the contact/separation direction, beveling can be performed even if the end face of the H-section steel is inclined.

By the way, in this beveling device, after carrying the H-beam between a pair of holding parts, one holding part is moved toward the other holding part, and the flange part b is formed on the inner surface of each holding part. The outer surfaces of ₁ and _b2 are pressed and held.

(Problem to be solved by the invention) However, as mentioned above, each holding part and each cutting part are all separate parts so that beveling can be performed even if the end face of the H-shaped steel is inclined. When beveling an H-beam with an inclined end surface, the beveling device is configured to move the holding position of the H-beam held by the holding part and the H-beam being cut by the cutting part. Since the cutting position is far away from the cutting position, the reaction force due to cutting is large, the holding of the H-beam becomes unstable, and the problem of unstable machining accuracy occurs.

Moreover, the holding part and the cutting part require a moving guide mechanism, a driving means such as a motor, and the number of components is large, making the movement complicated, and in this respect, there is also the problem that the machining accuracy is unstable.

By the way, the processing standard when beveling H-section steel with a beveling machine is that it is necessary to accommodate changes in the plate thickness of the flange parts _{b 1 and b 2 .}
The cutting portion is set on the inner surface of the flange portions b ₁ and b ₂ with reference to the inner surfaces of the flanges b 1 and b 2 .

However, in conventional beveling equipment, after carrying the H-beam between a pair of holding parts, one holding part is moved toward the other holding part, and the flange is formed on the inner surface of each holding part. Since the outer surfaces of b ₁ and b ₂ are pressed and held, the positioning reference in this case is on the outer surfaces of the flange portions b ₁ and b ₂ , and due to changes in the plate thickness of the flange portions b ₁ and b ₂ , machining The positions of the inner surfaces of the reference flange parts b ₁ and b ₂ change. Therefore, the flange
It is necessary to detect the positions of the inner surfaces of b ₁ and b ₂ using a separately provided detection mechanism, and to set the positions of each cutting portion in accordance with the positions of the inner surfaces of the flange portions b ₁ and b ₂ .

Therefore, since each holding part and each cutting part are separate bodies, and because the H-shaped steel cannot be held based on the inner surfaces of the flange parts b ₁ and b ₂ , in order to prepare for processing the H-shaped steel, I had to perform many movements.

The present invention was developed in view of the above-mentioned problems, and by keeping the holding position of the H-section steel close to the cutting position and keeping the distance constant, the H-section steel is held with high rigidity and machining accuracy is improved. It is an object of the present invention to provide a beveling device that can stabilize the process, hold an H-section steel and set a cutting part with the minimum necessary operations, and simplify machining preparation.

[Structure of the idea]

(Means for Solving the Problems) _The beveling device _of the present invention has the following advantages:
In a bevel processing device that performs bevel processing on the joints with b ₁ and b ₂ , an H is placed on the base 1 by the moving mechanism 2a.
One support 3a is erected so as to be movable in the width direction of the section steel, and the longitudinal direction of the H section is perpendicular to the moving direction of the one support 3a on the base 1 by a moving mechanism 2b. The other support body 3b is movably erected on the opposite side of the support body 3b, and a holder 6 is fitted on the inner surface of both the flange parts b ₁ and b ₂ of the H-beam steel on the opposing surface of each of the support bodies 3a and 3b. Holding parts 4a and 4b are pressed together and positioned and held using the fitting surfaces as processing standards, and the H-shaped steel is set and held in position based on the processing standards by the holders 6 of these holding parts 4a and 4b. Cutting portions 5a and 5b for pre-processing are integrally provided in close proximity to each other.

(Function) In the present invention, one of the supports 3a is moved by the moving mechanism 2a.
The H-shaped steel is moved according to the width thereof, and the other support body 3b is moved by the moving mechanism 2b according to the end face shape of the H-shaped steel. Holders 6 of the holding portions 4a, 4b of those supports 3a, 3b,
6 fits into and presses the inner surfaces of both flange portions b ₁ and b ₂ of the H section steel, positioning and holding the H section steel with reference to the processing reference plane of the inner surfaces of both flange sections b ₁ and b ₂ . .
By positioning and holding this H-shaped steel, the machining reference positions of the inner surfaces of the respective flange portions b ₁ and b ₂ and the cutting portions 5a and 5b coincide with each other. Moreover, each holding part 4a,
The holding position by 4b is a fixed position close to the end face of the H-section steel. Then, the H
The end face of the section steel is beveled by cutting parts 5a and 5b.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a base, and on this base 1, a pair of supports 3a and 3b, each of which has a moving mechanism 2a and 2b attached to its lower part, is erected. The body 3a has its moving mechanism 2
The direction of contact and separation from the other support 3b by a, that is, the width direction of the H-beam (hereinafter referred to as the X direction)
The other support body 3b is slidably movable to
The moving mechanism 2b allows the support body 3a to slide freely in a direction perpendicular to the sliding direction of the support body 3a, that is, in the longitudinal direction of the H-shaped steel (hereinafter referred to as the Y direction).

Both supports 3a and 3b include both supports 3a and 3b.
A holding part 4 that holds the H-shaped steel on the opposing surfaces of a and 3b.
a, 4b, and cutting portions 5a, 5b for performing beveling on the H-shaped steel are integrally provided in close proximity to each other.

The holding portions 4a, 4b attach the upper and lower portions of both flange portions _b1 , _b2 of the H-section steel to guide grooves (not shown) provided along the vertical direction on the opposing surfaces of the supports 3a, 3b. A pair of upper and lower holders 6, 6 are mounted to be able to move up and down, and the upper and lower holders 6, 6 are turned upside down by the operation of clamp motors 7, 7 disposed on the top of each support 3a, 3b. It is moved up and down in the direction. These holders 6, 6 are both flange parts of H-beam steel.
Fit and press the processing reference surfaces on the inner surfaces of b ₁ and b ₂ ,
In order to position and hold the H-shaped steel, the flange part b ₁ ,
Regardless of the change in the wall thickness of b ₂ , the H-shaped steel can be positioned and held based on the machining reference surfaces of the inner surfaces of the flange portions b ₁ and b ₂ . In addition, by providing an inclined portion on the outside of each holder 6 (on the support bodies 3a, 3b side) as shown in FIG. 2, the flange portions b ₁ and b ₂ can be easily guided to the outer surface of the holder 6. becomes possible.

The cutting parts 5a, 5b are connected to reducer units 8, 8 which are attached to the outer surfaces of the supports 3a, 3b so as to be movable up and down, and motors 9, 9 which are provided on the upper surfaces of the reducer units 8, 8. , and cutter units 10, 10, which are provided on the front side of the reducer units 8, 8 (on the near side in Figure 1) and transmit power from the motors 9, 9 via the reducer units 8, 8. Lifting screws 11, 11 arranged between the bodies 3a, 3b and the reducer units 8, 8
, the entire cutting portions 5a, 5b move up and down along the supports 3a, 3b. The lifting screw 11 of the support 3a is rotationally driven by a motor 12a connected to the lower part of the support 3a shown in FIG.
is rotationally driven by a motor 12b connected to the lower part of the support 3b shown in FIG.

On the opposing surfaces of the cutter units 10, 10,
Three spindles 13, 13, 13 are mounted horizontally and in parallel, and the upper spindle 13 has a flat cutter 14a, the center spindle 13 has a substantially hemispherical cutter 14b, and the lower spindle 13 has a conical cutter 14a. A cutter 14c is attached to each. In addition, each of these cutters 14a, 14b, 1
The position of 4c in the X direction is the outer surface of the holder 6, that is, the flange portions b ₁ and b ₂ into which this holder 6 fits.
They are each set based on the machining reference plane on the inner surface of the

As shown in FIGS. 4 and 5, the moving mechanism 2a attached to the lower part of one of the supports 3a has a trapezoidal sliding groove 15 provided on the base 1 along the longitudinal direction of the upper surface. A sliding table 16 is installed along the X direction, and a sliding groove 1 is formed on this sliding table 16.
A sliding body 18 to which a supporting body 3a is fixed is slidably attached to the upper surface of a trapezoidal sliding protrusion 17 that fits into the sliding body 5. Sliding protrusion 1 of this sliding body 18
A through hole 20 through which the screw shaft 19 is rotatably penetrated is provided in the center of 7 along the X direction, and a large diameter portion 21 is formed inside this through hole 20. A screw receiving member 22 screwed onto the screw shaft 19 is arranged in a non-rotating state, and springs 23 are interposed in the large diameter portions 21 on both sides of the screw receiving member 22. Also, screw shaft 1
One end of the slider 9 is rotatably supported by a support member 24 provided in the sliding groove 15 of the slider 16, the other end is rotatably supported by a bearing member 25 on the side wall of the base 1, and A sprocket 29 is attached to the other end of the screw shaft 19 protruding from the side wall of the base 1, to which rotational driving force is transmitted via a chain 28 from a sprocket 27 attached to the rotating shaft of a motor 26.

Moreover, a cover 30 is provided above the slide table 16 between the supports 3a and 3b, and expands and contracts as the slide body 18 moves in the X direction, and covers the top surface of the slide table 16.

As shown in FIGS. 4 and 6, the moving mechanism 2b attached to the lower part of the other support 3b is mounted on the base 1 by a pair of rails 31, 31 and a pair of rails 31, 31. Rails 32, 32 attached to each upper part are provided in parallel along the Y direction, and on these rails 32, 32, this rail 3
2 and 32 are attached to the four corners of the lower surface, and a slide member 34 having a support 3b fixed to the upper surface is attached so as to be slidable in the Y direction. At the center of the lower surface of this sliding body 34, a screw receiving member 35 is provided protruding between the rails 32, 32,
One end of a screw shaft 37 is screwed into a screw hole 36 formed in the center of this screw receiving member 35 . The other end of this screw shaft 37 is mounted on a bearing member 38 on the base 1.
A motor 39 is connected to the tip of the other end.

Furthermore, rails 32, 32 and the upper surface of the motor 39 between the front surface of the sliding body 34 (left side in FIG. 6) and the side wall of the base 1 are provided with rails that expand and contract as the sliding body 34 moves in the Y direction. 32, 32 and motor 39
A cover 40 is attached to cover the top surface of.

Also, the rear of the supports 3a and 3b (upper side in Figure 1)
A roller conveyor 41 is provided on the base 1 to carry the H-shaped steel between the supports 3a and 3b.

Further, on the upper part of the cutter unit 10 of the cutting part 5b, there is a positioning protrusion 42 on which the tip of the H-shaped steel carried in by the roller conveyor 41 comes into contact and is positioned.
is provided.

Next, the operation of this embodiment will be explained.

H-beams to be beveled are shown in Figures 8 and 9.
As shown in the figure, there are flange sections on both sides of web section a.
Assume that b ₁ and b ₂ are provided, and their end faces are inclined surfaces with one flange portion b ₁ protruding from the other flange portion b ₂ .

First, the moving mechanism 2b is activated to move the support body 3b forward by a distance greater than the inclination dimension of the end face of the H-section steel. The movement mechanism 2b is operated by driving the motor 39 and rotating the screw shaft 37.
The sliding body 34 is inserted through the screw receiving member 35 that is screwed into the
slides forward along the rails 32, 32.

Next, the moving mechanism 2a is activated, and the supports 3a,
The support body 3a is moved in the direction of the other support body 3b so that the width between the supports 3b becomes a width that allows the H-shaped steel to fit therein. In this moving mechanism 2a, a screw shaft 19 is rotated by the drive of a motor 26 via sprockets 27, 29 and a chain 28, and the screw receiving member 22 is moved by the rotation of the screw shaft 19, and is attached to a sliding member via a spring 23. 18 slides along the slide table 16.

After the supports 3a and 3b are moved, the roller conveyor 41 transports the H-shaped steel in an H-shape when viewed from the front, and positions the tip of the steel toward the support 3a. Then, by operating the clamp motor 7 provided on the upper part of the support body 3a, the upper and lower holders 6, 6 are fitted into the inner surface of one flange portion _b1 of the H-shaped steel.

Next, the moving mechanism 2b is operated, and the positioning protrusion 42 of the support body 3b moves to the other flange part b ₂ of the H-shaped steel.
By moving the support body 3b until it comes into contact with the tip of the support body 3b, and after moving the support body 3b, by operating the clamping motor 7 provided at the top of the support body 3b,
The upper and lower retainers 6, 6 are the other flange part of the H-shaped steel.
b Fits into the inner surface of ₂ .

Then, by moving the support 3a in a direction away from the other support 3b while the holders 6, 6 of each support 3a, 3b are fitted to the inner surfaces of the flange portions _b1 , _b2 , The outer surfaces of the holders 6, 6 fitted on the inner surfaces of the respective flange portions _b1 , b2 press the inner surfaces of the respective flange portions b1 _{, b2 ,} and the flange portions _{b1 ,}
b Position and hold the H-beam based on the machining standard on the inner surface of ₂ .

In this way, the holding portion 4 is attached to each support body 3a, 3b.
a, 4b and the cutting parts 5a, 5b are integrally provided, and the holder 6 prevents the flange part.
In order to position and hold the H-beam steel based on the processing reference plane on the inner surface of b ₁ , b ₂ , each flange portion b ₁ , b ₂ inner surface and cutting part 5a,
It is possible to match the processing reference position with 5b,
The processing standards for H-section steel are completed with the minimum necessary operations.

Note that the holding parts 4a, 4b of both supports 3a, 3b
are held at fixed positions close to the end faces (cutting positions) of the respective flange portions b ₁ and b ₂ .

Next, after the H-shaped steel is held between both supports 3a and 3b, the cutting parts 5a and 5b are operated to perform beveling on the H-shaped steel. The operation of the cutting parts 5a, 5b is performed by driving the motors 9, 9 to cut the cutters 14a, 14b, 14c through the reducer units 8, 8.
At the same time, the lifting screws 11, 11 are operated to move the entire cutting portions 5a, 5b onto the supports 3a, 5b.
3b. These cutting parts 5a, 5b
, the flat cutters 14a, 14a vertically drive (or sink) the end faces of the flange portions b ₁ , b ₂ of the H-beam steel, and the hemispherical cutters 14a, 14b cut each flange. Semispherical notches c, c are machined at the corners of the web portion a that contact portions b 1 and b ₂ , and conical cutters 14c and 14c form chamfered portions d _and d on the end faces of the respective flange portions b ₁ and b ₂ . Process d.

During this cutting process, the reaction force due to cutting acts on the H-beam steel and the holding parts 4a and 4b that hold the H-beam steel, but as mentioned above, the cutting position and the holding position of the H-beam are close to each other and there is a distance between them. Since this is constant, the H-shaped steel can be maintained with high rigidity and the processing accuracy can be stabilized.

Note that even if the wall thicknesses of the flange portions b ₁ and b ₂ of the H-beam steel differ, since the holder 6 fits into the inner surfaces of the flange portions b ₁ and b ₂ , the thickness of the flange portions b ₁ and b ₂ is different. The H-shaped steel can be positioned and held using the processing reference surface on the inner surface as a reference.

In addition, when the end face shape of the H-beam is perpendicular to the longitudinal direction of the H-beam, as shown in FIG. 7, the other support 3b is positioned parallel to the one support 3a. Then, when processing the H-section steel, only one support body 3a is moved in accordance with the width of the H-section steel.

[Effect of idea]

According to the present invention, one support body that is movable according to the width of the H-section steel and the other support body that is movable according to the end face shape of the H-section steel are provided with a holding part and a cutting part. Since they are integrally provided in close proximity, the holding position of the H-shaped steel and the cutting position can be kept close to each other to keep the distance constant, allowing the H-shaped steel to be held with high rigidity and stabilizing machining accuracy. Moreover, the number of components for movement can be reduced, and movement can be simplified. In addition, the holding part and the cutting part are integrally provided on each support, and the holder of the holding part fits into the inner surface of both flanges, and the machining reference plane of the inner surface of the flange is referenced. By positioning and holding the H-beam steel, it is possible to match the machining reference position between the inner surface of each flange and the cutting part simply by moving each support and positioning and holding the H-beam. Processing standards for H-section steel can be performed with the minimum necessary operations.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the beveling device of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a side view thereof, Fig. 4 is a cross-sectional view taken from the side of Fig. 1, and Fig. 5 The figure is a cross-sectional view of Fig. 1, and Fig. 6 is a - view of Fig. 1.
7 is a perspective view showing an example of H-section steel; FIG. 8 is a perspective view showing another example of H-section steel; FIG. 9 is a perspective view showing another example of H-section steel;
The figure is a plan view thereof. 1... Base, 2a, 2b... Moving mechanism, 3a,
3b...support body, 4a, 4b...holding part, 5a,
5b...Cutting part, 6...Holder, a...Web part, _b1 , _b2 ...Flange part.

Claims (1)

[Claims for Utility Model Registration] In a beveling device for bevelling the ends of both flange portions of an H-shaped steel and the joint portion between the flange portion of a web portion, One support is erected so as to be movable in the width direction of the section steel, and a moving mechanism is placed on the base so that the one support is movable in the longitudinal direction of the H section perpendicular to the direction of movement. A holder is fitted onto the inner surfaces of both flanges of the H-shaped steel and pressed against the opposing surfaces of each support, and the fitting surface is used as a processing reference for positioning. The present invention is characterized in that a holding part that holds the holding part and a cutting part that performs beveling on the H-shaped steel that is set and held in position based on the processing standard by the holder of the holding part are provided in close proximity and integrally with each other. Bevel processing equipment.