WO2023223729A1

WO2023223729A1 - Horizontal band saw

Info

Publication number: WO2023223729A1
Application number: PCT/JP2023/015025
Authority: WO
Inventors: 克広小林; 雅也横田
Original assignee: 株式会社アマダ; 株式会社アマダマシナリー
Priority date: 2022-05-18
Filing date: 2023-04-13
Publication date: 2023-11-23
Also published as: JP2023170139A; JP7418495B2

Abstract

The present invention is provided with: a moving vise jaw that shifts in accordance with the width of a workpiece, and that clamps the workpiece W between the moving vice jaw itself and a fixed vise jaw; a band-saw blade guide that rotatably retains a band-saw blade at an elevation angle at which a cutting area where a workpiece is cut forms a downward slope heading from the fixed vise-jaw side to the moving vise-jaw side; a cutting head that contains the band-saw blade guide, and that cuts a workpiece while descending along a vertically extending guidepost; and a workpiece-support member that supports the workpiece from underneath, and that, following on the moving vise jaw, moves in accordance with the width of the workpiece. The band-saw blade guide has: a moving saw-blade guide that, following on the moving vise jaw, retains the cutting area in a position in accordance with the width of a workpiece; and a fixed saw-blade guide that is fixed in a prescribed position.

Description

horizontal bandsaw machine

The present disclosure relates to a horizontal bandsaw machine.

Conventionally, in a horizontal band saw machine, as disclosed in Patent Document 1, the band saw blade is tilted from the horizontal direction so that it slopes upward from the fixed vice jaw side that grips and fixes the workpiece to the movable vice jaw side. Cutting is performed in a state in which the angle of elevation is set (hereinafter referred to as normal elevation angle).

Utility Model Publication No. 61-035716

In the above-mentioned horizontal band saw with a positive elevation angle, it is necessary to deal with the problem that the cutting end point at which the cutting of the workpiece ends changes depending on the cutting conditions such as the width and cross-sectional shape of the workpiece. However, when a horizontal band saw with a positive elevation angle is used, it is complicated to detect or calculate a cutting end point, which is the lowering end of the cutting head, when cutting a workpiece.

The horizontal bandsaw machine according to one aspect of the present embodiment includes a movable vice jaw that moves according to the width of the workpiece and clamps the workpiece between a fixed vice jaw, and a cutting area for cutting the workpiece that moves from the fixed vice jaw side. It includes a band saw blade guide that rotatably holds the band saw blade at an elevation angle that slopes downward toward the movable vice jaw side, and a band saw blade guide that cuts the workpiece while descending along the guide post that extends in the vertical direction. It includes a cutting head and a work support member that supports the workpiece from below and moves according to the width of the workpiece following the movable vice jaw.The band saw blade guide follows the movable vice jaw and moves according to the width of the workpiece. It has a movable saw blade guide that holds the cutting area in a corresponding position and a fixed saw blade guide that is fixed in a predetermined position.

The horizontal bandsaw machine according to one aspect of the present embodiment includes a movable vice jaw that moves according to the width of the workpiece and clamps the workpiece between a fixed vice jaw, and a cutting area for cutting the workpiece that moves from the fixed vice jaw side. It includes a band saw blade guide that rotatably holds the band saw blade at an elevation angle that slopes downward toward the movable vice jaw side, and a band saw blade guide that cuts the workpiece while descending along the guide post that extends in the vertical direction. A cutting head, a workpiece support member that supports the workpiece from below and moves according to the width of the workpiece according to the movable vice jaw, and the band saw blade guide follows the frictional force of rotation of the band saw blade, It has a movable saw blade guide that holds the cutting area at a position corresponding to the width of the workpiece, and a fixed saw blade guide that is fixed at a predetermined position.

According to the horizontal bandsaw machine according to one aspect of the present embodiment, the cutting area where the workpiece is cut slopes downward from the fixed vice jaw side to the movable vice jaw side, so that the cutting end point is when the fixed vice jaw cuts the workpiece. Determined at a unique position on the vertical plane to be fixed. In addition, the workpiece support member can be moved according to the width of the workpiece by following the movable vice jaws. Therefore, the workpiece support member can be moved to a position where it does not interfere with the descending movable saw blade guide while holding the cutting area at a position corresponding to the width of the workpiece.

According to the horizontal bandsaw machine according to one aspect of the present embodiment, it is possible to eliminate the complexity of detecting or calculating the cutting end point, which is the lowering end of the cutting head when cutting a workpiece. In addition, interference between the movable saw blade guide and the workpiece support member can be avoided.

FIG. 1 is a front view showing a horizontal bandsaw machine according to this embodiment. FIG. 2 is a top view showing the horizontal bandsaw machine according to this embodiment. FIG. 3A is a diagram showing an example of a workpiece support member and a support member guide of the horizontal bandsaw machine according to the present embodiment. FIG. 3B is a diagram showing an example of a workpiece support member and a support member guide of the horizontal bandsaw machine according to the present embodiment. FIG. 4 is a diagram showing an example of a connecting portion between the movable vice jaw and the workpiece support member of the horizontal bandsaw machine according to the present embodiment. FIG. 5 is a diagram showing the positional relationship among the movable saw blade guide, the workpiece support member, and the support member guide when the cutting head of the horizontal bandsaw machine according to the present embodiment is at its lowest position. FIG. 6 is a diagram showing the positional relationship among the movable saw blade guide, the workpiece support member, and the support member guide when the cutting head of the horizontal bandsaw machine according to the present embodiment is at its lowest position. FIG. 7 is a diagram showing an example of first and second workpiece support members of a horizontal bandsaw machine according to Modification 1 of the present embodiment. FIG. 8 is a diagram showing the positional relationship between the movable saw blade guide and the first and second workpiece support members when the cutting head of the horizontal bandsaw machine according to Modification 1 of the present embodiment is lowered to its lowest position. FIG. 9 is a diagram showing an example of first to third workpiece support members of a horizontal bandsaw machine according to a second modification of the present embodiment.

Hereinafter, a horizontal bandsaw machine according to the present embodiment will be described with reference to the drawings. In the following description, the left-right direction, front-back direction, and up-down direction are used to define directions, but these directions are only used for convenience of description. The left-right direction and the front-back direction correspond to the horizontal direction, and the up-down direction corresponds to the vertical direction.

FIG. 1 is a front view showing a horizontal bandsaw machine according to this embodiment. As shown in FIG. 1, the horizontal band saw machine 1 includes a movable vice jaw 71, a band saw blade guide, a cutting head 9, and a workpiece support member 81. The movable vice jaws 71 move according to the width of the workpiece W, and clamp the workpiece W between them and the fixed vice jaws 27. The band saw blade guide rotatably holds the band saw blade 47 at an elevation angle such that the cutting area for cutting the workpiece W is inclined downward from the fixed vice jaw 27 side toward the movable vice jaw 71 side. The cutting head 9 includes a bandsaw blade guide and cuts the workpiece W while descending along a guide post 31 extending in the vertical direction. The work supporting member 81 supports the work W from below and moves according to the width of the work W following the movable vice jaws 71. The band saw blade guide includes a movable saw blade guide 55 that is driven by the movable vice jaw 71 and holds the cutting area at a position corresponding to the width of the workpiece W, and a fixed saw blade guide 53 that is fixed at a predetermined position.

FIG. 2 is a top view showing the horizontal bandsaw machine according to this embodiment. First, with reference to FIGS. 1 and 2, an overview of the overall configuration of a horizontal bandsaw machine 1 according to the present embodiment will be described. The horizontal band saw machine 1 is a processing machine that cuts a workpiece W using a band saw blade 47. The workpiece W to be processed is a long workpiece that is elongated in the front-rear direction, such as an H-shaped rope (or I-beam, H-beam, W-beam, universal beam, rolled steel joist (RSJ), double -It is a section steel such as a beam with an I or H-shaped cross section, also referred to as a T.

The horizontal bandsaw machine 1 mainly includes a base 7, a cutting head 9, and an NC (Numerical Control) device 65. A front vice device 17 and a vice device 29 are provided on the base 7 and are capable of fixing the workpiece W in the left-right direction before and after the travel line of the band saw blade 47. A plurality of support rollers 11 are provided on the front and rear sides of the vice device 29 in the front-rear direction, respectively, for supporting the workpiece W so as to be movable in the front-rear direction.

A guide post 31 is erected on the base 7. A cutting head 9 is guided and supported by the guide post 31 so as to be vertically movable. The cutting head 9 includes a beam member 33a that is long in the left-right direction.

Housing body parts

35 and 37 are provided on both left and right sides of this beam member 33a. A drive wheel 43 that is rotated by a drive motor (not shown) is rotatably provided on one of the housing main bodies 35 . A driven wheel 45 is rotatably provided on the other housing main body portion 37 .

The band saw blade 47 is endlessly wound around both

wheels

43 and 45 for tracking adjustment, and is rotatable (driving). Further, the cutting head 9 is provided with a band saw blade guide that twists and guides the band saw blade 47 so that the saw teeth of the band saw blade 47 are directed downward. The band saw blade guide includes a fixed saw blade guide 53 and a movable saw blade guide 55. The movable saw blade guide 55 can be freely positioned in the left and right directions toward and away from the fixed saw blade guide 53. The movable saw blade guide 55 may be coupled to and driven by a movable vice jaw 71, which will be described later, or may be driven by frictional force caused by rotation of the band saw blade 47.

The horizontal band saw machine 1 operates by driving the band saw blade 47 to travel and lowering the cutting head 9 from the raised position when the workpiece W is clamped and fixed by the front vice device 17 and the vice device 29. 47, the workpiece W can be cut.

Next, details of the configuration of the base 7, cutting head 9, and NC device 65 of the horizontal bandsaw machine 1 will be explained.

The base 7 includes a support roller 11, a roller stand 13, a front vice device 17, a vice device 29, a workpiece support member 81, a guide post 31, and the like.

The support roller 11 supports and conveys the workpiece W. A plurality of support rollers 11 are provided on the front side and the rear side of the vice device 29, respectively. Each support roller 11 is rotatably supported by a roller stand 13. The work W whose lower surface is supported by the front and rear support rollers 11 is transported along a pass line that is a predetermined transport height.

The roller stand 13 is provided with a mechanism for transporting the work W to the vice device 29. For example, the roller stand 13 on the rear side of the vice device 29 is provided with a support roller electric motor (not shown) that rotates the support roller 11 on the rear side of the vice device 29 via a chain (not shown). Good too. In this case, the work W is conveyed to the vice device 29 by driving the support roller motor to rotate the support roller 11 on the rear side of the vice device 29 from the back side to the front side via the chain. Note that the configuration for conveying the work W to the vice device 29 is not limited to the above configuration, and may be, for example, a configuration for conveying the work W to the vice device 29 in a conventional horizontal bandsaw machine. .

The front vise device 17 fixes the workpiece W in front of the travel line of the band saw blade 47. The front vise device 17 is arranged in front of a workpiece support member 81, which will be described later. Further, the front vice device 17 is arranged above the support roller 11 on the front side of the vice device 29. The front vice device 17 includes a front vice bed 19, a front fixed vice jaw 21, and a front movable vice jaw 23. In addition, when fixing the workpiece W, it is sufficient to fix the workpiece W with either the vice device 29 on the rear side of the travel line of the band saw blade 47 or the front vise device 17, which will be described later. It is sufficient to hold the workpiece W between them. When fixing the workpiece W with both vise devices, the vice device 29 fixes the workpiece W by gripping the material side (upstream side), whereas the front vise device 17 fixes the workpiece W by gripping the workpiece side (downstream side). The purpose is to cut and position the workpiece W. The front vise device 17 is required to grip the workpiece W so that the product does not move even if the workpiece W is twisted or internal stress is generated due to the cutting of the band saw blade when cutting is completed. . In other words, it is sufficient for the front vise device 17 to grip the workpiece W with a gripping force weaker than that of the vise device 29 to the extent that it can hold the product side.

In FIG. 2, the front vice bed 19 is provided along the left-right direction, that is, the width direction of the workpiece W, and a front fixed vice jaw 21 is fixed to the right end of the upper surface of the front vice bed 19. Furthermore, a front movable vice jaw 23 is attached to the upper surface of the front vice bed 19 so as to be movable in the left-right direction.

The front movable vice jaw 23 moves along the front vice bed 19 according to the width of the workpiece W, and holds the workpiece W between it and the front fixed vice jaw 21. The front movable vice jaw 23 is configured to be movable in a direction toward the front fixed vice jaw 21 or in a direction away from the front fixed vice jaw 21, depending on the width of the workpiece W. The movement of the front movable vice jaws 23 is performed by a front vice cylinder 25 provided on the side of the front vice bed 19. The front fixed vice jaw 21 and the front movable vice jaw 23 hold the workpiece W by holding the workpiece W from both sides.

Note that the front vise device 17 may be attached so as to be movable in the front-rear direction above the plurality of support rollers 11 on the front side of the vise device 29. In this case, by moving the front vice bed 19 in the front and back direction with both sides of the workpiece W being held between the front fixed vice jaws 21 and the front movable vice jaws 23, the workpiece W after cutting and separation is carried out. good.

The vice device 29 fixes the workpiece W on the rear side of the travel line of the band saw blade 47. The vice device 29 is disposed on the rear side of a work support member 81, which will be described later, and on the front side of the rear support roller 11. The vice device 29 includes a fixed vice jaw 27 and a movable vice jaw 71. The fixed vice jaw 27 and the movable vice jaw 71 are each independently assembled to the base 7.

The movable vice jaw 71 is attached to be movable in the left and right direction. The fixed vice jaw 27 is fixed to the base 7.

The movable vice jaws 71 move according to the width of the workpiece W and clamp the workpiece W between them and the fixed vice jaws 27. The movable vice jaws 71 are configured to be movable in the direction toward the fixed vice jaws 27 or in the direction away from the fixed vice jaws 27. The moving operation of the movable vice jaw 71 is performed by a vice cylinder 73 provided on the sub-guide post 69. The fixed vice jaws 27 and the movable vice jaws 71 fix the work W by holding the work W from both sides.

With the above configuration, when the workpiece W is held between the

vice jaws

21 and 23 of the front vise device 17, the

vice jaws

21 and 23 of the front vise device 17 hold the product side of the workpiece W to be cut and separated by the bandsaw blade 47 on the left and right sides. It will be held from the direction. Further, when the workpiece W is held between the

vice jaws

27 and 71 of the vice device 29, the

vice jaws

27 and 71 of the vice device 29 fix the material side of the workpiece W to be cut and separated by the bandsaw blade 47 from the left and right directions. It turns out.

The work support member 81 is provided below each vice jaw (21, 23, 27, 71) and supports the work W from below. The workpiece support member 81 is provided along the left-right direction, that is, the width direction of the workpiece W, and is located between the front vice device 17 and the vice device 29. Moreover, the workpiece support member 81 is configured to be movable in the left-right direction according to the width of the workpiece W. In the horizontal bandsaw machine 1 according to the present embodiment, the workpiece support member 81 is connected to the movable vice jaw 71 by the connecting portion 83, so that the workpiece support member 81 is driven by the movable vice jaw 71 and moves according to the width of the workpiece W. do. Details of the configuration of the workpiece support member 81 will be described later with reference to FIGS. 3A to 6.

A guide post 31 is provided on the right side of the vice device 29. The guide post 31 extends linearly in the vertical direction. The cutting head 9 is attached to the guide post 31 so as to be movable up and down, and the guide post 31 guides the straight up and down movement of the cutting head 9.

A sub-guide post 69 is provided on the left side of the vice device 29. The sub guide post 69 extends linearly in the vertical direction. The cutting head 9 is attached to the sub-guide post 69 so as to be vertically movable, and the sub-guide post 69 guides the linear vertical movement of the cutting head 9 together with the guide post 31. Further, the sub guide post 69 is provided with a vice cylinder 73.

The cutting head 9 is arranged above the base 7. A workpiece W supported by a workpiece support member 81 and a support roller 11 is present between the cutting head 9 and the base 7 . The cutting head 9 includes a housing 33, a band saw blade 47, a fixed guide arm 49, a movable guide arm 51, a band saw blade guide (a fixed saw blade guide 53, a movable saw blade guide 55), and the like.

The housing 33 is attached to the guide post 31 and the sub-guide post 69, respectively, and is configured to be movable along the extending direction of the guide post 31 and the sub-guide post 69. A hydraulic cylinder 57 for raising and lowering the housing 33 is provided near the guide post 31. The tip of the piston rod of the lifting hydraulic cylinder 57 is connected to the bracket part 61 of the housing 33. By operating the hydraulic cylinder 57, the housing 33 moves up and down in a straight line along the guide post 31 and the sub-guide post 69. Although the present disclosure utilizes the expansion and contraction of a hydraulic cylinder to raise and lower the housing 33, it is also possible to use a lifting mechanism using a servo motor, a ball screw, a bearing, a rack and pinion, or a linear motor.

The housing 33 is composed of a beam member 33a extending in the left-right direction and

housing body parts

35 and 37 provided at both ends of the beam member 33a.

A drive wheel 43 is provided on one housing body portion 35, and a driven wheel 45 is provided on the other housing body portion 37. The drive wheel 43 and the driven wheel 45 are spaced apart from each other and face each other with the workpiece W in between. The drive wheel 43 is located closer to the fixed vice jaw 27 than the work W, and the driven wheel 45 is located closer to the movable vice jaw 71 than the work W.

A drive shaft 39 that is rotatably attached to the housing body portion 35 is inserted through the center of the drive wheel 43 . The drive shaft 39 is rotated by power transmitted from a drive mechanism such as a motor. The drive wheel 43 rotates as the drive shaft 39 rotates. A driven shaft 41 , which is rotatably attached to the housing body 37 , is inserted through the center of the driven wheel 45 .

Between the driving wheel 43 and the driven wheel 45, an endless band saw blade 47 for cutting the workpiece W is wound. The band saw blade 47 is rotatable by tracking adjustment. Therefore, the driven wheel 45 rotates following the rotation of the drive wheel 43 via the band saw blade 47. Although some band saw machines have two or more wheels that rotate in a driven manner, the driven wheel 45 shown in this embodiment has an endless band saw blade 47 for cutting the workpiece W stretched over it. This refers to a driven wheel for forming an area (cutting area) for cutting the workpiece W with the drive wheel 43. In the region between the drive wheel 43 and the driven wheel 45, the fixed saw blade guide 53 and the movable saw blade guide 55 are arranged so that the tip of the band saw blade 47 faces the direction of the workpiece W in order to cut the workpiece W. , twisting the band saw blade. The area between the fixed saw blade guide 53 and the movable saw blade guide 55 in the area between the drive wheel 43 and the driven wheel 45 becomes a cutting area where the workpiece W is cut. Note that oriented the tooth tip of the band saw blade 47 in the direction of the workpiece W means that the direction of the width of the band of the band saw blade matches the direction in which the guide post 31 and the sub-guide post 69 extend.

The fixed guide arm 49 is fixed to the right end of the beam member 33a. The fixed saw blade guide 53 is provided at the lower end of the fixed guide arm 49, grips the band saw blade 47 near the right end of the work W, and twists the band saw blade toward the work W. In addition, in this specification, "the end of the work W" means the end of the work W in the state mounted on the horizontal bandsaw machine 1. For example, when the workpiece W, which is an H-beam steel, is placed with its web section facing horizontally, the right end of the workpiece W is located on the right side of the horizontally oriented web section. The left end portion of the workpiece W means the flange portion located on the left side of the web portion facing in the horizontal direction. On the other hand, when the workpiece W, which is an H-beam steel, is placed with its web section facing vertically, the right end of the workpiece W is the lower side of the web section facing vertically. The left end of the workpiece W means the left end of the flange located below the web part facing in the vertical direction.

The movable guide arm 51 is located on the left side of the fixed guide arm 49 and is attached to be movable along the beam member 33a. The movable guide arm 51 includes a movable saw blade guide 55 at its lower end. In the horizontal bandsaw machine 1 according to the present embodiment, the movable guide arm 51 is connected to the movable vice jaw 71 by the connecting portion 59, so that the movable guide arm 51 is driven by the movable vice jaw 71 and moves along the beam member 33a. At this time, since the beam member 33a is inclined, when the movable vice jaw 71 moves in the left-right direction, the movable guide arm 51 moves in the left-right direction and also moves in the up-down direction. Note that the connecting portion 59 connects the movable guide arm 51 and the movable vice jaw 71 so that the movable guide arm 51 can move in the vertical direction. As a result, the movable guide arm 51 is allowed to move in the vertical direction, so the movable guide arm 51 that follows the movable vice jaw 71 is allowed to move up and down, and the entire cutting head 9 including the movable guide arm 51 is moved. Vertical movement can be allowed.

The movable saw blade guide 55 is fixed to the lower end of the movable guide arm 51 and is configured to be movable along the band saw blade 47. The movable saw blade guide 55 grips the band saw blade 47 near the left end of the workpiece W and twists the band saw blade toward the workpiece W. The movable saw blade guide 55 is connected to the movable vice jaw 71 and moves along the band saw blade 47 following the movable vice jaw 71 . In the horizontal band saw machine 1 according to the present embodiment, the movable guide arm 51 connected to the movable vice jaw 71 follows the movable vice jaw 71 and moves along the beam member 33a, so that the movable saw blade guide 55 is moved following the movable vice jaws 71. In addition to the above configuration, since the inclination of the beam member 33a corresponds to the inclination of the cutting area of the band saw blade 47, the movable saw blade guide 55 moves in the horizontal and vertical directions along the band saw blade 47. The cutting area of the band saw blade 47 is determined at a position corresponding to the maximum width of the work W to be cut, and the posture of the band saw blade 47 is maintained.

As described above, in the horizontal bandsaw machine 1 according to the present embodiment, the movable vice jaw 71, the movable saw blade guide 55, and the movable guide arm 51 are arranged in the width direction of the workpiece W according to the maximum width of the workpiece W to be cut at that time. Move in conjunction with. The horizontal bandsaw machine 1 starts cutting the workpiece W with the movable vice jaw 71, the movable saw blade guide 55, and the movable guide arm 51 each being fixed at a position corresponding to the maximum width of the workpiece W to be cut at that time. do. When cutting the workpiece W, the movable saw blade guide 55 and the movable guide arm 51 also descend in conjunction with the descent of the cutting head 9.

One of the features of this embodiment is that the beam member 33a of the housing 33 has an inclination angle that is downward from the fixed vice jaw 27 side toward the movable vice jaw 71 side. That is, the drive shaft 39, which is the center of the drive wheel 43, is located above the driven shaft 41, which is the center of the driven wheel 45, in accordance with the inclination angle of the beam member 33a. The wheel diameter of the driving wheel 43 and the wheel diameter of the driven wheel 45 correspond to each other, and the lower end 43a of the driving wheel 43 is located above the lower end 45a of the driven wheel 45. For this reason, the cutting area of the band saw blade 47 is given an inclination angle α (elevation angle α) that slopes downward from the fixed vice jaw 27 side toward the movable vice jaw 71 side. The housing 33 linearly moves up and down along the guide post 31 while maintaining the inclination angle α, that is, the positional relationship between the drive wheel 43 and the driven wheel 45. Therefore, the cutting of the workpiece W by the band saw blade 47 progresses from the movable vice jaw 71 side toward the fixed vice jaw 27 side, and ends at the cutting end point Pc. When cutting of the workpiece W is completed and the cutting head 9 is at its lowest position, the drive wheel 43 is located above the workpiece support member 81.

Next, details of the configuration of the workpiece support member 81 will be explained with reference to FIGS. 3A to 6.
3A and 3B are diagrams showing an example of the workpiece support member 81 of the horizontal bandsaw machine 1 according to the present embodiment. Referring to FIG. 1, the workpiece support member 81 is composed of a single member that is laterally elongated in the left-right direction. The workpiece support member 81 includes a workpiece support surface (upper surface) capable of supporting the workpiece W. The width dimension in the left-right direction of the workpiece support member 81 is set to a length that can stably support the workpiece W, depending on the maximum allowable width of the workpiece W that can be cut by the horizontal bandsaw machine 1. Further, the work support member 81 supports the work W at the same height as the conveyance height of the front and rear support rollers 11, as shown in FIG. An escape groove 89 is formed in the left-right direction on the upper surface of the workpiece support member 81, into which the band saw blade 47 can move. The cutting region of the band saw blade 47 enters into the relief groove 89 when cutting the work W, thereby avoiding interference with the work supporting member 81.

The work support member 81 includes a support member guide 85 that slides and moves the work support member 81. In the horizontal bandsaw machine 1 according to this embodiment, the support member guide 85 is provided on the base 7. Further, the support member guide 85 is provided below the workpiece support member 81 in the left-right direction, that is, along the width direction of the workpiece W. In the horizontal bandsaw machine 1 according to the present embodiment, the support member guide 85 is a mechanical component that guides the linear motion part of the machine using "rolling". The width dimension of the support member guide 85 in the left-right direction is set according to the width dimension of the workpiece support member 81. Note that the support member guide 85 is not limited to "rolling" as long as it is formed of a member that guides the linear motion part of the machine.

FIG. 4 is a diagram showing an example of a connecting portion between the movable vice jaw 71 and the workpiece support member 81 of the horizontal bandsaw machine 1 according to the present embodiment. The workpiece support member 81 includes a connecting portion 87 that allows the workpiece support member 81 to slide and move along the support member guide 85. The workpiece support member 81 is connected to the support member guide 85 by a connecting portion 87 . The connecting portion 87 is configured to allow the workpiece support member 81 to slide along the support member guide 85 . In the horizontal bandsaw machine 1 according to the present embodiment, the connecting portion 87 fixed to the left end of the workpiece support member 81 moves along the support member guide 85, so that the workpiece support member 81 is attached to the support member guide 85. It is configured to be movable along the

Further, the work support member 81 is connected to the movable vice jaw, and is configured to be slidable to a position on the fixed vice jaw side according to the width of the workpiece W. The workpiece support member 81 includes a connecting portion 83 that connects the workpiece support member 81 to the movable vice jaw 71 . In the horizontal bandsaw machine 1 according to the present embodiment, the connecting portion 83 includes a bracket 83a provided on the front side of the lower end portion of the movable vice jaw 71, and a cam follower 83b provided on the left end portion of the workpiece support member 81, By connecting the bracket 83a and the cam follower 83b, the work support member 81 is connected to the movable vice jaw 71. Note that the connecting portion 83 may be any member that connects the work supporting member 81 and the movable vice jaw, and is not limited to the bracket 83a and the cam follower 83b. With the above configuration, the workpiece support member 81 is moved according to the width of the workpiece W by following the movable vice jaws 71.

FIGS. 5 and 6 are diagrams showing the positional relationship of the movable saw blade guide 55, the workpiece support member 81, and the support member guide 85 when the cutting head 9 is at its lowest position. As described above, the cutting head 9 holds the band saw blade 47 at an inclination angle α that slopes downward from the fixed vice jaw 27 side toward the movable vice jaw 71 side, and moves the workpiece while descending along the guide post 31. Cut W. As shown in FIG. 5, when the cutting head 9 is at its lowest position, the movable saw blade guide 55 is located below the bottom surface of the workpiece W, and the fixed sawblade guide 53 is located above the bottom surface of the workpiece W. Further, when the cutting head 9 is lowered to the lowest position, the workpiece support member 81 is located closer to the fixed vice jaw 27 than the position of the movable saw blade guide 55. Note that when carrying in the workpiece W, the fixed vice jaws 27 are moved from the reference position in order to avoid a problem in which the workpiece W interferes with the fixed vice jaws 27 due to the relationship between the straightness of the workpiece W and the reference position of the fixed vice jaws 27. There is also a band saw machine that can be temporarily evacuated. Here, the fixed vice jaw 27 side indicates that the reference position of the fixed vice jaw 27 is the starting point.

With the above configuration, when cutting the workpiece W, it is possible to avoid interference between the movable saw blade guide 55, which descends below the lower surface of the workpiece W, and the workpiece support member 81.

Furthermore, in the horizontal bandsaw machine 1 according to the present embodiment, when the cutting head 9 cuts the workpiece W while descending along the guide post 31, the cutting length of the workpiece W differs depending on the width of the workpiece W. In other words, the distance from the movable vice jaw 71 side to the fixed vice jaw 27 side becomes shorter as the width of the workpiece W becomes smaller. Therefore, the position of the movable saw blade guide 55 at the start of machining moves upward to the right along the band saw blade 47 as the width of the workpiece W to be cut becomes shorter. The width of the work W in FIG. 6 is shorter than the width of the work W in FIG. 5. As shown in FIG. 6, when the width of the workpiece W becomes shorter, the movable saw blade guide 55 moves upward to the right along the band saw blade 47. When the width of the work W becomes shorter, the work support member 81 moves to the right according to the width of the work W, and moves to a position closer to the fixed vice jaw 27 than the position of the movable saw blade guide 55. Therefore, regardless of the width of the work W, the movable saw blade guide 55 that descends below the lower surface of the work W can avoid interference with the work support member 81.

Furthermore, the movable saw blade guide 55 moves downward to the left when the width of the workpiece W becomes longer. Therefore, when the width of the workpiece W to be cut is the longest, the movable saw blade guide 55 descends to the lowest position compared to when the width of the workpiece W is the shortest. Even in that case, the movable saw blade guide 55 can pass to the left of the left end of the workpiece support member 81 (the end on the movable vice jaw 71 side) and descend without interfering with the left end of the workpiece support member 81 (the end on the movable vice jaw 71 side). The support member guide 85 is arranged so that the cutting head 9 does not interfere with the movable saw blade guide 55 when the cutting head 9 descends to the lowest position when cutting the longest workpiece that can be cut by the horizontal bandsaw machine 1. It is arranged below the lower end.

With the above configuration, the movable saw blade guide 55 that descends below the lower surface of the work W when cutting the work W can avoid interference with the support member guide 85.

Referring to FIG. 1, the NC device 65 is provided on the upper part of the guide post 31 via the arm member 63. However, the NC device 65 may be arranged at a position separate from the horizontal bandsaw machine 1. The NC device 65 is a control device that controls the horizontal band saw machine 1. Detection signals are input to the NC device 65 from various sensors that detect the amount of descent of the cutting head 9 and the like. The NC device 65 controls the rotation of the band saw blade 47, the vertical movement of the cutting head 9, etc. based on these detection signals and the machining program.

In relation to this embodiment, the NC device 65 determines whether the band saw blade 47 has descended to the cutting end point Pc based on a detection signal from a sensor that detects the amount of descent of the cutting head 9. When the NC device 65 determines that the band saw blade 47 has descended to the cutting end point Pc, it performs an operation to raise the housing 33 to a predetermined home position.

In the horizontal bandsaw machine 1 having such a configuration, the workpiece W is positioned at an appropriate position by rotating the support roller 11 and transporting the workpiece W. When the workpiece W is positioned, the front vice device 17 and the vice device 29 fix the workpiece W. The horizontal band saw machine 1 cuts a workpiece W by rotating a drive wheel 43 to move a band saw blade 47 and lowering a cutting head 9 along a guide post 31 under the control of an NC device 65. I do.

In the horizontal band saw machine 1 according to the present embodiment, the inclination of the band saw blade 47 is reversed from that of the conventional one, and the cutting area for cutting the workpiece W is set at an elevation angle such that the cutting area slopes downward from the fixed vice jaw 27 side toward the movable vice jaw 71 side. Cutting is performed while holding the band saw blade 47 (hereinafter referred to as reverse elevation angle). By cutting at a reverse elevation angle, the cutting end point Pc is determined at a unique position on the vertical plane where the fixed vice jaws 27 fix the workpiece W. Therefore, the cutting end point Pc can be detected when cutting the workpiece W. There is no need to perform calculations. As a result, the complexity of cutting the workpiece W can be eliminated.

In the reverse elevation horizontal band saw machine 1 described above, the movable saw blade guide 55 that holds the cutting area at a position corresponding to the width of the workpiece W descends to a position below the lower surface of the workpiece W when cutting the workpiece. . Therefore, the movable saw blade guide 55 that descends when cutting the workpiece W in the reverse elevation horizontal bandsaw machine 1 is prevented from interfering with the workpiece support member 81 that supports the workpiece W from below below the movable vice jaw 71. Need to avoid.

In the horizontal bandsaw machine 1 according to the present embodiment, the workpiece support member 81 is movable according to the width of the workpiece by following the movable vice jaws. Therefore, the workpiece support member 81 can hold the cutting area at a position corresponding to the width of the workpiece W and move to a position where it does not interfere with the descending movable saw blade guide 55. As a result, the movable saw blade guide 55 can cut the workpiece W with the cutting area of the band saw blade 47 tilted downward from the fixed vice jaw 27 side toward the movable vice jaw 71 side. Interference with the support member 81 can be avoided.

Furthermore, in the horizontal band saw machine 1 according to the present embodiment, the workpiece support member 81 is connected to the movable vice jaw 71 and can slide to a position on the fixed vice jaw 27 side according to the width of the workpiece W. Thereby, the movable saw blade guide 55, which descends below the lower surface of the workpiece W when cutting the workpiece W, can avoid interference with the workpiece support member 81.

Furthermore, in the horizontal bandsaw machine 1 according to the present embodiment, the slidable workpiece support member 81 is connected to a support member guide 85 that supports the workpiece support member 81. The support member guide 85 is disposed below the lower end of the movable saw blade guide 55 when the cutting head 9 is at its lowest position. Thereby, the movable saw blade guide 55, which descends below the lower surface of the workpiece W when cutting the workpiece W, can avoid interference with the support member guide 85.

Furthermore, in the horizontal bandsaw machine 1 according to the present embodiment, the support member guide 85 is a mechanical component that guides the linear motion section of the machine. Thereby, the workpiece support member 81 can be slid according to the width of the workpiece W by following the movable vice jaws 71.

Further, according to the horizontal bandsaw machine 1 according to the present embodiment, the following secondary effects can also be achieved.

The elevation angle of a normal horizontal bandsaw machine is opposite to that of the present disclosure, and is a so-called normal elevation angle horizontal bandsaw machine. In a horizontal band saw with a positive elevation angle, the lower end of the driving wheel is lower than the lower end of the driven wheel, and when the band saw blade is rotated to cut the workpiece, the chips are discharged to the bottom of the workpiece. . On the other hand, the horizontal band saw machine 1 of the present disclosure is a horizontal band saw machine with a reverse elevation angle, as opposed to a horizontal band saw machine with a normal elevation angle. When the band saw blade 47 is rotated to cut the work W, the cutting chips are scraped out onto the upper side of the work W, and the chips accumulate on the work W. However, the occurrence of burrs that tend to tear the workpiece W, which tends to occur at the end of cutting, is suppressed, and even if burrs are generated, the burrs will not be caught in the device when the workpiece W is being transported.

Furthermore, since the cutting end point Pc is constant, there is no need to consider errors in the width of the workpiece W depending on individual differences among the workpieces W. As a result, the amount of idle cutting can be reduced to zero or significantly, so that work efficiency can be improved.

In addition, the horizontal bandsaw machine 1 according to the present embodiment is a multi-tasking machine equipped with a drill head capable of drilling a hole in the workpiece W on the upstream side of the cutting head 9 in the conveyance direction of the workpiece W. It's okay. As described above, since the center of the drive wheel 43 is located above the center of the driven wheel 45, the band saw blade 47 cuts the workpiece W in a cutting state. Therefore, it is possible to prevent the band saw blade 47 from getting caught up in the chips accumulated on the workpiece W during the drilling process in the previous process. Thereby, it is possible to prevent chipping of the band saw blade 47 and to improve the machining accuracy of the cut surface.

Note that in the embodiment described above, the beam member 33a of the housing 33 is inclined. However, as long as the center of the drive wheel 43 is located above the center of the driven wheel 45, the beam member 33a may be horizontal.

Furthermore, in the embodiment described above, the wheel diameter of the driving wheel 43 and the wheel diameter of the driven wheel 45 correspond to each other. However, as long as the lower end 43a of the drive wheel 43 is located above the lower end 45a of the driven wheel 45, the wheel diameters do not need to match.

Furthermore, in the embodiments described above, a section steel is exemplified as the workpiece W, but the workpiece is not limited to this. The horizontal bandsaw machine 1 according to this embodiment can be widely applied to a workpiece W having a cross-sectional shape such that the end of the workpiece W exists at the intersection of a workpiece support reference and a fixed vise reference.

Furthermore, in the above-described embodiment, the inclination angle α that slopes downward from the fixed vice jaw 27 side toward the movable vice jaw 71 side is set over the entire band saw blade 47. However, the setting of this inclination angle α does not need to cover the entire band saw blade 47, but only needs to cover at least the cutting area.

Furthermore, in the embodiment described above, the movable saw blade guide 55 is connected to the movable vice jaw 71. However, the movable saw blade guide 55 may be configured to be movable independently according to the width of the workpiece W without being connected to the movable vice jaw 71. The movable saw blade guide 55 may be configured to be movable along the band saw blade 47 depending on the width of the workpiece.

Furthermore, in the embodiment described above, the workpiece support member 81 is connected to the movable vice jaw 71. However, the support member guide 85 may be configured to be movable independently according to the width of the workpiece W without being connected to the movable vice jaw 71. The workpiece support member 81 may be configured to be movable to a position closer to the fixed vice jaw than the movable saw blade guide 55 when cutting the workpiece W.

(Modification 1)
In the embodiment described above, a case has been described in which the workpiece support member is constituted by one member that is laterally elongated in the left-right direction. However, the workpiece support member may be composed of two members, a first workpiece support member and a second workpiece support member. The first work supporting member is fixed to the movable vice jaw 71, is movable to a position on the fixed vice jaw 27 side according to the width of the work W, and supports one end of the work W from below. The second workpiece support member is fixed to the fixed vice jaw 27 and supports the other end of the workpiece W from below.

FIG. 7 is a diagram showing an example of the first and second

workpiece support members

81a and 81b of the horizontal band saw machine 1 according to Modification 1 of the present embodiment. In FIG. 7, the workpiece W is an H-section steel, and the workpiece W is placed on the horizontal bandsaw machine 1 with the web portion of the H-section steel oriented horizontally. The first and second

workpiece support members

81a and 81b support the flange portions located on the left and right sides of the horizontally oriented web portion from below. The first workpiece support member 81a supports the left end portion of the workpiece W, that is, the flange portion located on the left side of the horizontally oriented web portion from below. The second workpiece support member 81b supports the right end portion of the workpiece W, that is, the flange portion located on the right side of the horizontally oriented web portion from below. Note that when the workpiece W is placed on the horizontal bandsaw machine 1 with the web portion of the H-shaped steel oriented vertically, the first workpiece support member 81a is placed on the left end of the workpiece W, that is, in the vertical direction. The left end portion of the flange portion located on the underside of the oriented web portion is supported from below. The second workpiece support member 81b supports the right end portion of the workpiece W, that is, the right end portion of the flange portion located below the vertically oriented web portion from below.

The first and second

work supporting members

81a and 81b are located between the front vice device 17 and the vice device 29. In FIG. 7, the first workpiece support member 81a is fixed to the movable vice jaw 71, and is configured to be movable in the left-right direction according to the width of the workpiece W by following the movable vice jaw 71. The second work supporting member 81b is fixed to the fixed vice jaw 27.

Further, in FIG. 7, the movable vice jaw 71 supports the left end of the workpiece W, and the fixed vice jaw 27 supports the right end of the workpiece W. That is, the left end of the work W is supported by the movable vice jaw 71 and the first work support member 81a, and the right end of the work W is supported by the fixed vice jaw 27 and the second work support member 81b. More specifically, the first workpiece support member 81a supports the product-side left end of the workpiece W to be cut and separated by the band saw blade 47, and the movable vice jaw 71 supports the left end of the workpiece W to be cut and separated by the band saw blade 47. Support the left end of W on the material side. The second work support member 81b supports the right end of the work W on the product side to be cut and separated by the band saw blade 47, and the fixed vice jaw 27 supports the right end of the work W on the material side to be cut and separated by the band saw blade 47. support the department.

A band saw blade 47 is provided between the movable vice jaw 71 and the fixed vice jaw 27 on the side surface of the first work support member 81a on the movable vice jaw 71 side and on the side surface of the second work support member 81b on the fixed vice jaw 27 side.

Relief grooves

89a and 89b are formed into which the vehicle can move. The depth of the

relief grooves

89a and 89b will be described later. The cutting area of the band saw blade 47 enters the

relief grooves

89a, 89b when cutting the work W, thereby avoiding interference with the first and second

work supporting members

81a, 81b. can.

FIG. 8 shows the positional relationship between the movable saw blade guide 55 and the first and second

workpiece support members

81a and 81b when the cutting head 9 of the horizontal bandsaw machine 1 according to Modification 1 of the present embodiment is at its lowest position. FIG. As shown in FIG. 8, when the cutting head 9 is at its lowest position, the movable saw blade guide 55 is located below the lower surface of the work W, and the fixed saw blade guide 53 is located above the lower surface of the work W. Further, when the cutting head 9 is lowered to the lowest position, the first workpiece support member 81a is located closer to the fixed vice jaw 27 than the movable saw blade guide 55 is.

Here, as described above, when the width of the workpiece W becomes shorter, the movable saw blade guide 55 moves upward to the right along the band saw blade 47. When the width of the workpiece W becomes shorter, the first workpiece support member 81a moves to the right according to the width of the workpiece W by following the movable vice jaw 71, and moves from the position of the movable saw blade guide 55 to the fixed vice jaw 27. Move to position A on the side. Note that the position A is an arbitrary position depending on the width of the workpiece W. Therefore, regardless of the width of the work W, the movable saw blade guide 55 that descends below the lower surface of the work W can avoid interference with the first work support member 81a.

Further, even if the width of the work W becomes shorter and the first work support member 81a moves to the right position A according to the width of the work W, the second work support member 81b It is always fixed in the same position regardless of the width. Therefore, the second work supporting member 81b does not protrude to the right of the position of the fixed vice jaw 27. This eliminates the need for a space for the workpiece support member to protrude to the right of the position of the fixed vice jaw 27, and the dead space of the horizontal bandsaw machine 1 can be suppressed.

In addition, since the movable saw blade guide 55 moves downward to the left when the width of the workpiece W becomes longer, when the width of the workpiece W to be cut is the longest width, the width of the workpiece W to be cut is compared with the cutting width when the width of the workpiece W is the shortest width. and descend to the lowest point. Therefore, the relief groove 89a of the first workpiece support member 81a is designed to prevent interference with the band saw blade 47 when the cutting head 9 is lowered to the lowest position when cutting the workpiece W having the longest width that can be cut by the horizontal band saw machine 1. It suffices if it is formed to a certain depth. Further, as described above, in the horizontal bandsaw machine 1 according to the present embodiment, the cutting end point is determined at a unique position on the vertical plane where the fixed vice jaw 27 fixes the workpiece W by cutting at a reverse elevation angle. . Therefore, the relief groove 89b of the second workpiece support member 81b may be formed to a depth that does not interfere with the band saw blade 47 when the band saw blade 47 descends to the cutting end point. The depth of the relief groove 89b may be shorter than the depth of the relief groove 89a.

(Modification 2)
Moreover, the workpiece support member 81 may be comprised of three members: a first workpiece support member, a second workpiece support member, and a third workpiece support member. The first work supporting member is fixed to the movable vice jaw 71, is movable to a position on the fixed vice jaw 27 side according to the width of the work W, and supports one end of the work W from below. The second workpiece support member is fixed to the fixed vice jaw 27 and supports the other end of the workpiece W from below. The third workpiece support member is movable in conjunction with the first workpiece support member according to the width of the workpiece W, and the third workpiece support member is movable in accordance with the width of the workpiece W, and the third workpiece support member is movable in accordance with the width of the workpiece W. Support from below.

FIG. 9 is a diagram showing an example of the first to third work support members 81c to 81e of the horizontal bandsaw machine 1 according to the second modification of the present embodiment. In FIG. 9, the first work support member 81c supports the left end of the work W from below, the second work support member 81d supports the right end of the work W from below, and the third work support member 81c supports the right end of the work W from below. 81e supports the center of the workpiece W from below. The first to third work supporting members 81c to 81e are located between the front vice device 17 and the vice device 29.

Note that each of the first to third workpiece support members 81c to 81e has relief grooves formed in the left-right direction in which the band saw blade 47 can enter and run, similarly to the workpiece support member 81 shown in FIG. 3A. , FIG. 9 shows only the portion of each of the first to third work supporting members 81c to 81e closer to the vice device 29 than the clearance groove. Note that the depth of each of the relief grooves of the first to third work supporting members 81c to 81e is the same as the depth of the relief groove 89 in FIG. 3A, so a description thereof will be omitted here. When cutting the workpiece W, the cutting area of the band saw blade 47 enters the clearance groove, thereby preventing interference between the cutting area of the band saw blade 47 and each of the first to third workpiece support members 81c to 81e when cutting the workpiece W. can be avoided.

In FIG. 9, the first workpiece support member 81c is fixed to the movable vice jaw 71 and is configured to be movable in the left-right direction according to the width of the workpiece W following the movable vice jaw 71. The second work support member 81d is fixed to the fixed vice jaw 27. The third work support member 81e is movable in the left-right direction according to the width of the work W in conjunction with the first work support member 81c, and is configured to always support the lower part of the center of the work W. has been done.

The third work support member 81e includes a support member guide 85a that slides and moves the third work support member 81e. The support member guide 85a is provided below the third workpiece support member 81e in the left-right direction, that is, along the width direction of the workpiece W. The support member guide 85a is a mechanical component that guides the linear motion part of the machine using "rolling". The width dimension of the support member guide 85a in the left-right direction may be set at least from a position that is half the minimum clamp width that can be clamped by the fixed vice jaws 27 and the movable vice jaws 71 to a position that is half the maximum clamp width. Note that the support member guide 85a is not limited to using "rolling" as long as it is composed of a member that guides a linear motion part of the machine.

The third work support member 81e includes a connecting portion 87a that allows the third work support member 81e to slide and move along the support member guide 85a. The third workpiece support member 81e is connected to the support member guide 85a by a connection portion 87a, and the connection portion 87a is configured to allow the third workpiece support member 81e to slide along the support member guide 85a.

As shown in FIG. 9, the connecting portion 87a is slidably connected to the side surface of the support member guide 85a. The third work supporting member 81e can be slid in the left-right direction by fixing the lower surface of the third work supporting member 81e to the upper surface of the connecting portion 87a. In FIG. 9, the connecting portion 87a includes a pulley P. The connecting portion 87a is connected to the first workpiece support member 81c by a wire L that is passed around the pulley P. The connecting portion 87a is connected to the second work supporting member 81d by springs Q1 and Q2. When the first workpiece support member 81c follows the movable vice jaw 71 and moves in the left-right direction according to the width of the workpiece W, the connecting portion 87a allows the first workpiece support member 81c to be moved by the wire L and the springs Q1 and Q2. It is configured to move in the left and right direction by half of the amount of movement. With the above configuration, the third workpiece support member 81e moves along the support member guide 85a according to the width of the workpiece W in conjunction with the first workpiece support member 81c, and the third workpiece support member 81e moves in conjunction with the first workpiece support member 81c. The workpiece W can be supported at the center position of the second workpiece support member 81d.

Here, as described above, when the width of the workpiece W becomes shorter, the movable saw blade guide 55 moves upward to the right along the band saw blade 47. When the width of the workpiece W becomes shorter, the first workpiece support member 81c follows the movable vice jaw 71 and moves to the right according to the width of the workpiece W, and moves from the position of the movable saw blade guide 55 to the fixed vice jaw 27. Move to the side position. Therefore, regardless of the width of the work W, the movable saw blade guide 55 that descends below the lower surface of the work W can avoid interference with the first work support member 81c.

In addition, even if the width of the workpiece W becomes shorter and the first workpiece support member 81c moves to the right position according to the width of the workpiece W, the second workpiece support member 81d can maintain the width of the workpiece W. It is always fixed in the same position regardless of the Therefore, the second work supporting member 81d does not protrude to the right of the position of the fixed vice jaw 27. This eliminates the need for a space for the workpiece support member to protrude to the right of the position of the fixed vice jaw 27, and the dead space of the horizontal bandsaw machine 1 can be suppressed.

Further, when the width of the workpiece W becomes shorter and the first workpiece support member 81c moves to the right position according to the width of the workpiece W, the third workpiece support member 81e moves closer to the first workpiece support member 81c. In conjunction with this, it moves to the right position and is located at the center position between the first work support member 81c and the second work support member 81d. For example, when the workpiece W is a round material, the third workpiece support member 81e can support the outer circumferential surface of the workpiece W located vertically downward when viewed from the center of the cross section of the workpiece W, so that the workpiece W is Even in the case of a round material, the workpiece W can be supported.

Note that the first and second

workpiece support members

81c and 81d do not support the workpiece W when the workpiece W is a round material. Further, the third workpiece support member 81e supports the workpiece W when the workpiece W is an H-section steel and is placed on the horizontal bandsaw machine 1 with the web portion of the H-section steel in the horizontal direction. do not. In this way, the first to third workpiece support members 81c to 81e only need to be able to support the workpiece W from below, and depending on the shape of the workpiece W and the direction in which it is placed, the first to third workpiece support members 81c to 81e may be The work W may be supported from below by any one of 81c to 81e.

As described above, the embodiments of the present invention have been described, but the statements and drawings that form part of this disclosure should not be understood as limiting the present invention. Various alternative embodiments, implementations, and operational techniques will be apparent to those skilled in the art from this disclosure.

This application claims priority based on Japanese Patent Application No. 2022-081660 filed with the Japan Patent Office on May 18, 2022, and the entire disclosure content thereof is incorporated herein by reference.

Claims

A movable vice jaw that moves according to the width of the workpiece and clamps the workpiece between it and a fixed vice jaw;
a band saw blade guide that rotatably holds a band saw blade at an elevation angle such that a cutting area for cutting the workpiece is sloped downward from the fixed vice jaw side toward the movable vice jaw side;
a cutting head that includes the band saw blade guide and cuts the workpiece while descending along a guide post that extends in the vertical direction;
a work support member that supports the work from below and moves according to the width of the work according to the movable vice jaw;
Equipped with
The band saw blade guide is a horizontal type having a movable saw blade guide that follows the movable vice jaw and holds the cutting area at a position corresponding to the width of the workpiece, and a fixed saw blade guide that is fixed at a predetermined position. Band saw machine.
A movable vice jaw that moves according to the width of the workpiece and clamps the workpiece between it and a fixed vice jaw;
a band saw blade guide that rotatably holds a band saw blade at an elevation angle such that a cutting area for cutting the workpiece is sloped downward from the fixed vice jaw side toward the movable vice jaw side;
a cutting head that includes the band saw blade guide and cuts the workpiece while descending along a guide post that extends in the vertical direction;
a work support member that supports the work from below and moves according to the width of the work according to the movable vice jaw;
Equipped with
The band saw blade guide includes a movable saw blade guide that follows the frictional force of rotation of the band saw blade and holds the cutting area at a position corresponding to the width of the workpiece, and a fixed saw blade guide that is fixed at a predetermined position. A horizontal band saw machine with
3. The horizontal bandsaw machine according to claim 1, wherein the workpiece support member is constituted by a single member that is horizontally elongated in the left-right direction, and supports the workpiece from below below the movable vice jaw.
The work supporting member is
connected to the movable vice jaw;
The horizontal bandsaw machine according to claim 3, wherein the horizontal bandsaw machine is slidable to a position on the fixed vice jaw side depending on the width of the workpiece.
The slidable workpiece support member is
connected to a support member guide that supports the workpiece support member;
The horizontal bandsaw machine according to claim 4, wherein the support member guide is disposed below a lower end of the movable saw blade guide when the cutting head is at its lowest position.
6. The horizontal bandsaw machine according to claim 5, wherein the support member guide is a mechanical component that guides a linear motion part of the machine.
The work supporting member is
a first work support member connected to the movable vice jaw, movable to a position on the fixed vice jaw side according to the width of the work, and supporting one end of the work from below; The horizontal band saw machine according to claim 1 or 2, comprising two members: a second work support member connected to the fixed vice jaw and supporting the other end of the work from below.
The work supporting member is
a first work support member connected to the movable vice jaw, movable to a position on the fixed vice jaw side according to the width of the work, and supporting one end of the work from below; a second work support member connected to the fixed vice jaws and supporting the other end of the work from below; and a second work support member that is movable in accordance with the width of the work in conjunction with the first work support member. , and a third work support member that supports the work from below at a central position of the first work support member and the second work support member. Horizontal bandsaw machine.