WO2006040894A1

WO2006040894A1 - Cutting apparatus

Info

Publication number: WO2006040894A1
Application number: PCT/JP2005/016626
Authority: WO
Inventors: Tsuyoshi Ide
Original assignee: Kanefusa Kabushiki Kaisha
Priority date: 2004-10-15
Filing date: 2005-09-09
Publication date: 2006-04-20
Also published as: JP3829258B2; TW200615067A; TWI344402B; JP2006110691A

Abstract

A cutting apparatus eliminating the need of a work placing table interfering with the flange of a circular saw and capable of using the circular saw with a small diameter. A fixed vice (84) directly supporting one side-part (12a) of a pipe (12) and a movable vice (86) capable of freely advancing and retreating relative to the fixed vice (84) and directly supporting the other side-part (12b) of the pipe (12) in advancing are disposed near the work cutting position of the cutting apparatus. Also, a work support part (78) stopping the upward movement of the pipe (12) by its contact with the upper part of the pipe (12) arriving at the work cutting position and supporting a load acting on the pipe (12) is formed on the upper part of the work cutting position. The both side-parts (12a) and (12b) of the pipe (12) are held by the both vices (84) and (86), and the circular saw (10) is raised from the lower side of the pipe (12) in the upwardly positioned state of the pipe by the work support part (78) for cutting.

Description

Specification

Cutting equipment

Technical field

TECHNICAL FIELD [0001] The present invention relates to a cutting apparatus, and more particularly, to an improvement in a cutting apparatus that raises a rotary cutting tool toward a work sandwiched by a vice and cuts the work.

Background art

[0002] For example, in a conventional circular saw cutting device that cuts a pipe as a workpiece with a circular saw, the pipe is placed on a workpiece mounting table, and a fixed vice and a movable vice provided in pairs on the left and right sides with the cutting position interposed therebetween. There is a type of holding the pipe with a vice and cutting the circular saw down from above the pipe. In this way, when the circular saw is lowered and cut, a part of the chips is accumulated inside the lower part of the S pipe as the cutting progresses, so when cutting the lower half of the pipe, Teeth force The pipe is cut while the accumulated chips are involved. For this reason, there was a problem that the cutting surface of the cutting force pipe was scratched or the teeth of the circular saw were lost.

[0003] Therefore, as shown in Patent Document 1, a circular saw cutting apparatus that addresses the above-described problem by cutting a circular saw by increasing the downward force of the pipe is known. FIG. 8 is a schematic view showing the cutting operation area of the cutting device 14 in an enlarged manner. The Neuve 12 is placed on the workpiece mounting table 16, and the fixed vise 18 and the movable vise 20 are further pressed downward from above. In a state where the circular saw 8 is clamped by a vise (not shown) and fixed at the cutting position, the circular saw 8 is lifted from the lower side of the pipe 12 by appropriate driving means to perform cutting. The workpiece mounting table 16, the fixed vise 18, and the movable vise 20 are formed with slits slightly larger than the saw thickness of the circular saw 8 so as to allow the circular saw 10 to pass during cutting. Yes. In this cutting device 14, the downward force of the pipe 12 is also cut upward, so that a part of the chips generated at the time of cutting is accumulated inside the pipe. However, since the circular saw 8 adopts a method of entering the pipe from the bottom of the pipe 12, the chips are located separately on both sides of the circular saw 8, and the teeth of the circular saw 8 are accumulated. Therefore, the possibility of continuing pipe cutting while entraining the cut chips is reduced, and therefore the above-mentioned problem can be preferably solved. Patent Document 1: JP-A-8-336719

Disclosure of the invention

Problems to be solved by the invention

[0004] The circular saw is attached to the rotary shaft of the circular saw cutting device by sandwiching the circular saw from both sides with a pair of flanges. However, in the type of cutting device 14 that raises the workpiece downward force of the circular saw 8 described in FIG. 8, the outer peripheral force of the flange 22 that sandwiches the circular saw 8 at an early stage during the raising of the circular saw 16 Will interfere with the back of the. Therefore, a retracting portion (stolen portion) 24 that allows the approach of the flange 22 to the maximum extent is formed in a concave shape on the back surface of the work mounting table 16, but even in that case, the conventional circular saw is lowered. Compared to the type, the diameter of the circular saw 8 had to be increased.

That is, as shown in FIG. 8, the radius R of the circular saw 8 required to completely cut the pipe 12 is at least the radius of the flange 22 !: the thickness of the stealing portion 24 of the workpiece mounting table 16 | 8 and the diameter of pipe 12 must be greater than the sum of diameters a, and the upward force of the workpiece is inevitably greater than that of a cutting device of the type that lowers the circular saw 8, and the thickness of the stealing portion 24/3 As a result, the circular saw diameter becomes larger. If the circular saw diameter is increased in this way, there arises a problem that the rigidity is lowered and the manufacturing cost is increased. Further, when the circular saw diameter is increased, the side runout of the circular saw 8 at the time of cutting increases, and the disadvantage that the cutting accuracy of the pipe 12 decreases is pointed out. Furthermore, as the circular saw diameter increases, the saw thickness also increases, which increases the cutting cost of the pipe, resulting in an uneconomical disadvantage when obtaining a large number of cutting pieces.

[0006] Accordingly, the present invention provides a cutting apparatus that raises the rotating force of the rotary cutting tool also in the downward force of the workpiece. By restricting the position of the workpiece in the vertical direction at the time of cutting above the workpiece, it interferes with the flange. It is an object of the present invention to provide a cutting apparatus that can use a rotary cutting tool having a small diameter without using a workpiece mounting table.

Means for solving the problem

In order to overcome the above-mentioned problems and achieve the intended purpose, a cutting device according to the present invention includes a fixed vise that abuts and supports one side of the workpiece in the vicinity of the workpiece cutting position, and the fixed vice. And a movable vise that is capable of moving forward and backward and that abuts and supports the other side of the workpiece when moving forward. In a cutting apparatus that raises the tool and cuts the workpiece,

A workpiece support portion is provided that is positioned above the workpiece cutting position and that is controlled by the upper force S of the workpiece that has reached the workpiece cutting position in contact with the upper force and supports the load acting on the workpiece. It is characterized by that.

The invention's effect

[0008] According to the cutting apparatus of the present invention, since the workpiece support portion that is in contact with the upper portion of the workpiece and regulates the position is provided above the workpiece cutting position, the workpiece mounting table in which interference with the flange is a concern. The rotary cutting tool can be made small. As a result, the rigidity of the rotary cutting tool is improved, the manufacturing unit price is suppressed, and the side runout can be further suppressed. In addition, since a small-diameter rotary cutting tool can be used, the thickness of the cutting tool is reduced, cutting waste generated at the time of cutting is reduced, and the economic efficiency when cutting a large number of workpieces is improved. There is.

[0009] Further, by providing the workpiece support portion on the beam of the cutting device, the rigidity of the workpiece support portion is improved, and the workpiece can be supported with high positional accuracy, so that the cutting accuracy, particularly the cutting right angle is improved. Is planned. Furthermore, when a tool having the same size as the cutting tool used in the conventional cutting apparatus shown in FIG. 8 is used, a larger workpiece can be cut.

BEST MODE FOR CARRYING OUT THE INVENTION

[0010] Next, the cutting device according to the present invention will be described below with reference to the accompanying drawings by way of a preferred embodiment. In the embodiment, a circular saw cutting device that cuts a hollow pipe (workpiece) with a circular saw is illustrated, but the application range is not limited to this, and cutting and cutting of solid steel materials and wood materials are not limited thereto. It can also be used for Xiao IJ. In addition, the rotary cutting tool for cutting the workpiece is not limited to a circular saw such as a cold saw or a tip saw, but various types of rotary tools provided with blades extending in the radial direction at intervals of a required central angle are used. .

Example

[0011] As shown in Figs. 2 and 3, the cutting device 26 according to the embodiment includes a base portion 28 of the device main body, a cutting mechanism 32 including a circular saw 10 and a circular saw lifting drive unit, A feed mechanism 34 that intermittently feeds the pipe 12 on the PL to the cutting position at a constant pitch, and a beam 36 that extends horizontally above the workpiece cutting position and has a workpiece support 78 (described later) provided on the lower surface. Is basically composed. In addition, as the base unit 28, the material feeding mechanism 34, and the cutting mechanism 32 shown in the embodiments, conventionally known ones that are not limited to those described below can be appropriately employed.

[0012] (About fixed vise)

The beam 36 installed horizontally on the columns 56, 56 erected on the cutting device 26 is made of a material having high rigidity such as steel, and the cutting portion of the noise 12 by the circular saw 10 is positioned below the beam 36. It is like that. That is, as shown in FIGS. 1 and 4, on the lower surface of the beam 36, a fixed vise 84 that abuts and supports one side 12a of the pipe 12 at the workpiece cutting position, and the fixed vise 84 There is provided a movable vise 86 that can move forward and backward and that abuts and supports the other side 12b of the pipe 12 when moving forward. The work contact surface of the fixed vise 84 is slightly inclined downward toward the movable vise 86 on the lower surface of the beam 36. Further, as shown in FIG. 6, a slit 84a slightly larger than the saw thickness is provided at the center position of the fixed vise 84 so as to allow passage of the circular saw 10, and as a result, Two inclined contact surfaces 98, 98 are formed at a portion where the fixed vise 84 contacts the side portion 12a of the pipe 12 so that the pipe 12 is regulated in the horizontal direction.

[0013] (About movable vise)

As shown in FIGS. 1 and 3, the movable vise 86 is configured to be able to move forward and backward along the longitudinal direction on the lower surface of the beam 36. Further, as shown in the plan view of FIG. 6, the movable vise 86 is formed with a slit 86a that allows the circular saw 10 to enter, and is substantially U-shaped. Two contact surfaces 90 and 90 that contact 12 are provided. As shown in FIG. 1, the contact surfaces 90, 90 are also inclined so as to be inclined toward the fixed vise 84 side. That is, the abutment surfaces 98 and 98 on the fixed vise 84 side and the abutment surfaces 90 and 90 on the movable vise 86 side are also provided with gentle slopes close to each other. When the pipe is clamped, a synthetic force that pushes the pipe 12 upward acts. As a result, the pipe 12 is reliably pressed against the workpiece support 78 described later.

[0014] The movable vise 86 is connected to the piston 94 of the cylinder 92 as shown in FIGS. It can be moved forward and backward along the longitudinal direction of the beam 36. In the embodiment, the slit 86a is provided on the pipe contact side of the movable vise 86. However, the movable noise 86 and 86 are provided on the left and right sides of the passage area of the circular saw 10, respectively. It's good. Further, the mechanism for moving the movable vise 86 back and forth is not limited to the illustrated cylinder 92, and various linear actuators may be employed.

[0015] (About work support)

As shown in FIG. 1 and FIG. 3, the upper surface of the pipe 12 that has reached the workpiece cutting position is brought into contact with the lower surface of the beam 36 to perform upward regulation and a strong load acting on the pipe 12. A workpiece support 78 is provided to support the workpiece. That is, the workpiece support 78 is provided in a horizontal portion that opens below the fixed vise 84, and the upper portion of the pipe 12 that has reached the cutting position is brought into contact with the workpiece support 78, so that the pipe 12 An upward positioning is made. Therefore, at the time of cutting, the pipe 12 is supported in the horizontal direction by the fixed vise 84 and the movable vise 86 and is regulated upward by the work support portion 78, whereby the pipe 12 is It is securely fixed at the cutting position.

[0016] The work support 78 supports a large upward load acting on the pipe 12 when the circular saw 10 cuts the pipe 12. The work support 78 has rigidity. By providing the lower surface of the beam 36, the load applied to the pipe 12 at the time of cutting can be reliably received. As shown in FIG. 5, the workpiece support 78 is formed with a slit-like cut portion 96, so that the raised circular saw 10 is allowed to enter. In the embodiment, the force shown in the case where the workpiece supporting portion 78 is formed in the horizontal portion of the fixed vise 84 is formed directly as a part of the beam 36 separately from the fixed vise 84, or is a beam-like rigidity. Alternatively, the workpiece support 78 having the above may be provided independently.

[0017] (About cutting mechanism)

The cutting mechanism 32 for raising the circular saw 10 from below the pipe 12 includes a pair of support members 38 and 38 erected on the base 28 as shown in FIGS. 3, 5 and 6, and the circular saw 10 and the circular saw 10. A swaying motor 44 equipped with a saw motor 40 and supported by both support members 38 and 38 through a support shaft 42 so as to oscillate, and the oscillating part 44 is oscillated through an elevating mechanism 46. Give the circular saw 10 a lift The motor 30 and force are configured.

[0018] The swinging portion 44 has a substantially parallelogram in cross section, and has a gear box 48 having a circular saw 10 at one end thereof, and a force with the circular saw motor 40 provided below the gear box 48. The motor 30 integrally swings by a required central angle in the vertical direction. Also, as shown in FIG. 2, the rotation of the circular saw motor 40 is transmitted to a speed reduction mechanism 54 comprising pulleys 50, 50 and a V belt 52. After being decelerated to the rotational speed, it is transmitted to the rotary shaft of the circular saw 10.

The elevating mechanism 46 is fixed to the support 56 as shown in FIG. 3 so as to be swingable via a support shaft 57 and a bottom surface of the gear box 48. The fork 60 pivotally supports the nut 100 via 59 and the output shaft of the motor 30 in the motor support case 58 and is connected to the ball screw 62 screwed on the nut 100. Has been. Then, the motor 30 rotates the ball screw 62 to give the nut 100 advancing and retreating in the axial direction, thereby giving a vertical feed to the fork 60 supporting the nut 100. Thus, the oscillating portion 44 is oscillated around the support shaft 42 in FIG. 3 while drawing an arc in the vertical direction. That is, the circular saw 10 provided on the swinging portion 44 is raised and lowered together with the swinging portion 44.

[0020] (About the feeding mechanism)

As shown in FIGS. 2 and 4, the feeding mechanism 34 for feeding the Neuve 12 to the cutting position includes a feeding vise 64 for feeding intermittently feeding the pipe 12 on the pass line PL to the cutting position at a constant pitch. The feeding auxiliary vice 68 provided on the upstream side of the pass line PL and sandwiching the lower end portion of the pipe 12 and the upstream side of the auxiliary feeding noise 68 for feeding, the diameter of the pipe 12 In addition, it is composed of a feed roller 72 that adjusts the height position of the pass line PL. That is, the feeding vise 64 for feeding material is provided above the side wall portion 74 parallel to the nose line PL of the cutting device 26, and reciprocates so as to feed the pipe 12 downstream at a constant pitch. It is designed to move. In addition, as shown in the left side view of FIG. 5, an elevating frame 76 for raising and lowering the pipe 12 is provided at a position adjacent to the feeding vise 64 for feeding material, and the pipe 12 is connected to the work support portion 78. So that it can be brought into contact with each other reliably.

[0021] The feeding auxiliary vice 68 is always on the upstream side of the pass line PL as shown in FIG. As the cutting operation progresses, the noise 12 is shortened, and when the rear end of the pipe 12 is detached from the feed roller 72, the rear end of the pipe 12 is held. The The feed roller 72 provided on the upstream side of the pass line PL holds the pipe 12 at a predetermined height and can smoothly feed the noise 12. The feed roller 72 is configured such that its height can be adjusted according to the diameter of the pipe 12 to be cut. Note that reference numeral 80 in FIG. 5 indicates a shot for guiding the pipe 12 after cutting downward, and the pipe 12 guided by the chute 80 is collected in a collection box 82 disposed below. Further, the chute 80 can be moved by a moving means (not shown) so that the circular saw 10 can be moved to a position facing the inside of the apparatus beyond the circular saw 10 when the circular saw 10 is lowered. That is, as shown in FIG. 7, the chute 80 can be moved forward and backward in the horizontal direction, and after the circular saw 10 descends, the upper end side force of the chute 80 can be passed over the circular saw 10 and enter the inside of the apparatus. As a result, the cut end 102 of the pipe 12 generated at the end of cutting is caught by the shot 80, and the cut end 102 is prevented from falling into the apparatus.

[0022] (Operation of Example)

Next, the operation of the cutting device 26 according to the embodiment will be described. First, the pipe 12 is set in the feeding mechanism 34 and arranged on the pass line PL. At this time, the height position of the feed roller 72 is adjusted according to the diameter of the pipe 12 to be cut. The elevating frame 76 is raised to lift the pipe 12, and the feeding vise 64 for feeding material sandwiches the noise 12 and sends the noise 12 to the cutting position by a predetermined amount. At this time, since the upstream side of the pipe 12 is supported by the feed roller 72, the pipe 12 can smoothly move on the path line. At this time, the feeding auxiliary vice 68 is in a standby state with the pipe 12 opened.

When the pipe 12 is delivered to the workpiece cutting position, the movable vise 86 moves forward, and the pipe 12 is clamped by the contact surfaces 90 and 98 of both the vise 84 and 86. At this time, as shown in FIG. 1, the abutment surfaces 90 and 98 are inclined toward each other, so that the pipe 12 is pushed upward and is surely abutted against the workpiece support 78. . That is, the pipe 12 is positioned in the horizontal direction by the fixed vise 84 and the movable noise 86. In addition, since the workpiece support 78 provided on the rigid beam 36 regulates upward, the pipe 12 is securely fixed at the workpiece cutting position without using the conventional workpiece mounting table 16. .

When the pipe 12 is fixed at the workpiece cutting position, the motor 30 rotates the ball screw 62 as shown in FIG. By the rotation of the ball screw 62, the fork 60 that supports the nut 100 is fed, and the circular saw 10 starts to rise as the swinging portion 44 swings about the support shaft 42. Then, as shown in FIG. 6, the circular saw 10 enters between the slits 84a and 86a of the fixed vise 84 and the movable vise 86, and the cutting of the pipe 12 is started. At this time, the large load generated when the pipe 12 is cut is supported by the workpiece support 78 provided on the beam 36 having high rigidity, so that the pipe 12 does not vibrate. Cutting accuracy can be maintained. Then, as shown in FIG. 5, when the circular saw 10 faces the cut portion 96 of the workpiece support portion 78 and the pipe 12 is completely cut, the cut noise 12 is guided to the chute 80. And collected in a collection box 82.

That is, since the cutting device 26 according to the embodiment does not require the workpiece mounting table 16 that has been conventionally used, the circular saw 10 that does not interfere with the flange 22 of the circular saw 10 can be reduced. . Thereby, the rigidity of the circular saw 10 to be used is improved, the manufacturing unit price is suppressed, and the side runout can be further suppressed. In addition, since a circular saw 10 having a small diameter can be used, the thickness of the circular saw 10 is reduced, and cutting waste generated at the time of cutting is reduced, so that the economic efficiency when cutting a large number of pipes 12 is improved. .

[0026] While the pipe 12 is being cut, the feed vise 64 for feeding material opens the pipe 12 and moves it by a predetermined amount to the upstream side, and pinches the pipe 12 again. When the pipe 12 is cut, the movable noise 86 moves backward, and the pipe 12 sandwiched between the vices 84 and 86 is released. At the same time, the motor 30 rotates the ball screw 62 in the reverse direction, and the circular saw 10 is lowered from the cutting position. Then, the feeding vise 64 for feeding resumes the feeding of the pipe 12. When the cutting progresses and the end of the pipe 12 is detached from the feed roller 72, the feeding auxiliary vice 68 sandwiches the vicinity of the end of the pipe 12 and follows the noise 12. As shown in FIG. 7, when the final cutting of the pipe 12 is finished and the circular saw 10 is lowered, the chute 80 is horizontally moved leftward by a driving means (not shown), and the chute 8 The upper end side of 0 faces the circular saw 10. Next, when the movable vise 86 is moved to the open side, the cut end 102 of the pipe 12 is released from both the vices 84 and 86 and falls, and is caught by the shout 80. This prevents the broken piece 102 from falling into the apparatus.

Brief Description of Drawings

FIG. 1 is an enlarged schematic front view of a cutting operation area of a cutting apparatus according to an embodiment.

FIG. 2 is a perspective view of the entire cutting apparatus according to the example observed from obliquely behind.

FIG. 3 is a front view of a cutting apparatus according to an embodiment.

FIG. 4 is a plan view of the cutting device according to the example.

FIG. 5 is a left side view of the cutting apparatus according to the example.

6 is a cross-sectional view taken along line V-VI in FIG.

FIG. 7 is an enlarged left side view of the cutting operation area of the cutting apparatus shown in FIG.

FIG. 8 is an enlarged schematic front view of a cutting operation area in a conventional cutting apparatus.

Claims

The scope of the claims

A fixed vise (84) that abuts and supports one side (12a) of the workpiece (12) in the vicinity of the workpiece cutting position, and can move forward and backward with respect to the fixed vise (84). A movable vise (86) that abuts and supports the other side (12b) of (12), and the rotary cutting tool (10) is directed toward the workpiece (12) sandwiched between both vices (84, 86). In a cutting device that raises and cuts the workpiece (12),

The workpiece support is located above the workpiece cutting position, and the upper part of the workpiece (12) that has reached the workpiece cutting position comes into contact with the upper portion to perform the upper restriction and supports the load acting on the workpiece (12). Part (78)

The cutting device characterized by the above.