CA1126624A - Band saw with improved angle cutting capability - Google Patents
Band saw with improved angle cutting capabilityInfo
- Publication number
- CA1126624A CA1126624A CA377,790A CA377790A CA1126624A CA 1126624 A CA1126624 A CA 1126624A CA 377790 A CA377790 A CA 377790A CA 1126624 A CA1126624 A CA 1126624A
- Authority
- CA
- Canada
- Prior art keywords
- vertical
- movable head
- band
- subframe
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 230000036346 tooth eruption Effects 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting
- B23D53/04—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting with the wheels carrying the strap mounted shiftably or swingingly, i.e. during sawing, other than merely for adjustment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting
- B23D53/04—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting with the wheels carrying the strap mounted shiftably or swingingly, i.e. during sawing, other than merely for adjustment
- B23D53/045—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting with the wheels carrying the strap mounted shiftably or swingingly, i.e. during sawing, other than merely for adjustment with pivotably mounted head carrying the saw wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
ABSTRACT
Disclosed is an improvement of scissors type and vetical feed type band saws wherein a rotatable subframe carries the movable head and is itself connected by a vertical pivot to the saw base. Selective rotation of the rotatable subframe causes rotation of the cutting plane of the saw band with respect to the saw base and the workpiece vise jaws which are mounted on the base. In this way selectively angled cuts can be made without reorienting the workpiece.
Disclosed is an improvement of scissors type and vetical feed type band saws wherein a rotatable subframe carries the movable head and is itself connected by a vertical pivot to the saw base. Selective rotation of the rotatable subframe causes rotation of the cutting plane of the saw band with respect to the saw base and the workpiece vise jaws which are mounted on the base. In this way selectively angled cuts can be made without reorienting the workpiece.
Description
i~Z6~
SPECIFICATION
FIELD OF THE_INVENTION
This invention relates to movable head band saws and, more particularly, to a head mounting system permitting angled or mitre cuts without special orientation of the workpiece.
DESCRIPTION OF THE PRIOR ART
Movable head band saws are commonly used for cutting pieces off longer pieces of rolled, drawn, of extruded stock material They may be divided into three basic types, lo The first type, commonly known as the scissors type cut-off saw, is so named because the head of the band saw is pivotally raised and lowered, relative to the work area, in a scissors motion. ~uring the downstroke, the scissors motion of the cutting portion of the blade cuts through the workpiece.
The second type of movable head band saw may be referred to as a vertical feed saw because it employs one or two posts, which guide the head of the saw as it is vertically raised or lowered with respect to the work area, The motion of the head is a straight line translation with the head remaining horizontal The third type of movable head band saw is commonly referred to as a tilt head saw, In this type, the head is carried on a movable carriage fitted to a carriage way system which permits horizontal translation of the carriage and head, forwards and backwards, through the work area. The head is attached to the carriage by a pivotal connection, with pivot parallel to carriage translation, permitting the entire head and cutting portion of the blade to be tiited out of the vertical plane for making an angular cut in the workpiece as the head and - 1 - ~
l~Z~ 4 cutting portion of the blade are moved through the workpiece by the translation of the carriage.
These three types of movable head band saws are used primarily as "cut-off" saws for cutting pieces off relatively long work pieces, such as lengths of structural steel In some kinds of work, as in frame construction, angular or mitre cuts are frequently required. In the scissors and vertical feed types of band saws, angle cut capability has been provided by special workpiece vises in which either the whole vise, or its two jaws only, may be pivotally adjusted about a vertical axis, or axes, before the workpiece is clamped. In this way the workpiece may be held with its longitudinal axis at the desired angle to the cutting plane of the band saw Unfortunately, because workpieces are usually long and are frequently fed to the saw by roller tables, this method of making angle cuts is often impractical.
As has been mentioned, the tilt head type band saw permits angle cuts without reorientation of the workpiece, However, because of structural requirements associated with the movable carriage, and the need for a power carriage drive, tilt head band saws are characteristically large, heavy, and expensive machines.
It is, therefore, a~ object of the invention to provide a head mounting means which will enable scissors and vertical feed band saws to make angle cuts economically, and without reorientation of the workpiece, According to the invention, the head of the band saw is mounted on a rotatable subframe which is itself pivotally mounted to the base of the saw, The axis of the subframe pivot is vertical and is adjacent the front edge of the fixed jaw of the workpiece vise which is rigidly mounted to the work table portion of the saw base. A locking means is interposed between the rotatable subframe and the saw base so that the angular relationship between them may be selectively set.
The rotatable subframe lies substantially below the work table such that, within its range of angular adjustment, it does not encroach upon the workpiece area In the form in which the invention is applied to the scissors type band saw, the moving head is connected to the rotatable subframe by a horizontal pivot lying perpendicular to the cutting plane, in the same manner as the moving head is connected to the saw base in a conventional scissors type band saw.
The rotatable subframe pivot may be located such that it lies in the plane of the fixed jaw of the workpiece vise, and the geometry of the head and rotatable subframe may be made such that the cutting plane contains the vertical projection of the subframe pivot. Thus, regardless of cutting angle, the cutting plane passes through a fixed point in the plane of, and adjacent the front edge of the fixed jaw of the workpiece vise, affording simple and accurate length of cut setting, as well as uniform support of the workpiece.
In the form in which the invention is applied to the vertical feed type band saw, the rotatable subframe has two lateral extensions which support the lower ends of the vertical posts which support and guide the movable head. These extensions are configured, and the posts located, so that they do not encroach on the workpiece area. As in the scissors type saw, ~lZt;~;Z~
the cutting plane contains the vertical projection of the subframe pivot.
The manner in which these two forms of the invention achieve the object will be apparent fro~ the following description and accompanying drawings, Figure 1 is a schematic profile view of a conventional scissors type movable head band saw.
Figure 2 is a schematic profile view of a conventional vertical feed type movable head band saw, Figure 3 is a schematic profile view of a tilt frame type movable head band saw, Figure 4 is a schematic side view of a tilt frame type movable head band saw, Figure 5 is a schematic plan view of a scissors type movable head band saw incorporating a swing head ~ounting in accordance with the present invention. showing particularly the head swing and resulting angle cutting capability, Figure 6 is a schematic profile view of the machine depicted in Figure 5, Figure 7 is a schematic profile view of a vertical feed type movable head band saw incorporating a swing head mounting in accordance with the present lnvention, Figure 8 is a schematic plan view of the machine of Figure 7 showing particularly the head swing and resulting angle cutting capability, DETAILED DESCRIPTION OF THE PREFERRED ~MBODIMENTS
With reference to Figure 1, the scissors type movable head band saw 1, comprises base 2, work table 3, fixed and movable work piece vise jaws, 4 and 5 respectively, and further comprises movable head 6 carrying driving and driven band wheels.
7 and 8 respectively. Movable head 6 is pivotally connected to base 2 by pivot axle 9 which is parallel to the line formed by the intersection of the plane of the work table 3, and the plane of the fixed workpiece vise jaw 4, such that movable head 6 is permitted to move pivotally, in the direction of arrow 11, in a plane perpendicular to said line. Cutting band 12 is trained in tension around driving and driven band wheels 7 and 8, and is twisted by band guides (not shown for clarity) so that its cutting teeth are directed towards the work area 13 and the cutting portion 15 of the cutting band 12 lies in the plane of motion of the movable head 6. Workpiece 14 is supported by work table 3 and held firmly in place by fixed and movable vise jaws 4 and 5, such that, for a parallel sided workpiece, the workpiece longitudinal axis is parallel to pivot axle 9.
Thus when cutting portion 15 of the cutting band 12 is carried through the work area 13 by the motion of the movable head 6, the workpiece 14 is cut off on a plane perpendicular to its longitudinal axis With reference to Figure 2, the vertical feed type movable head band saw 21, comprises base 22, work table 23, fixed and movable workpiece vise jaws 24 and 25 respectively, and further comprises movable head 26 carrying driving and driven band wheels 27 and 28 respectively. Movable head 26 is connected to the base 22 by head guides 29 and 30 which constrain the movable head 26 to vertical motion, indicated by arrow 31, in a plane which is mutually perpendicular to the plane of the work table 23, and the plane of the fixed workpiece vise jaw 24.
Workpiece 32 is supported by work table 23 and held firmly in place by fixed and movable workpiece vise jaws 24 and 25 such that, for a parallel sided workpiece, the workpiece longitudinal axis is perpendicular to the plane of the motion of the movable head 26, Cutting band 33 is trained in tension around driving and driven band wheels 27 and 28 and is twisted by band guides lQ (not shown for clarity) so that its cutting teeth are directed towards the work area 34 and the cutting portion 35 of the cutting band 33 lies in the plane of motion of the movable head 26. Thus when cutting portion 35 of cutting band 33 is carried through the work area 34, by the motion of the movable head 26, the workpiece 32 is cut off on a plane perpendicular to its longitudinal axis.
With reference to Figures 3 and 4, the tilt frame type movable head band saw 41, comprises movable head 42 which is pivotally connected by pivot axle 43 to carriage 44, such that movable head 42 is permitted to move pivotally, in the direction of arrow 60, in a plane parallel to the plane of the saw front 47 The carriage 44 is slidably supported, through way bars 45, by base 46, such that carriage 44 and movable head 42 are permitted to move toward and away from saw front 47, in the direction indicated by arrow 48 Movable head 42 carries driving and driven band wheels 49 and 50 respectively, about which cutting band 51 is trained in tension. Cutting band 51 is twisted by cutting band guides 52 and 53 so that its cutting teeth are directed toward the worX area 54, and the cutting portion 56 of 1~2~ 4 the cutting band 51 lies in a vertical plane which is parallel to the line of movable head motion, and mutually perpendicular to the planes of the work table 55 and the fixed workpiece vise jaw 57 To make a cut, driving band wheel 49 is caused to rotate, and movable head 42 is advanced to carry cutting portion 56 of cutting band 51 through the workpiece 59 which is supported by work table 55, and held firmly in place by fixed and movable workpiece vise jaws 57 and 58 For a parallel sided workpiece, the resulting cut is on a plane perpendicular to its longitudinal axis.
By means of pivot axle 43, the movable head 42 may be selectively tilted out of the vertical plane such that, as the movable head 42 is moved through the work area 54, as angular cut is made through the workpiece 59.
With reference to Figures 5 and 6, the improved scissors type movable head band saw 61 is similar to that in Figure 1 except that a rotatable subframe 62 is interposed between the movable head 63 and the base 64. Movable head 63 is pivotally connected, by horizontal pivot axle 65, to rotatable subframe 62 which is itself pivotally connected to base 64 by the vertical subframe pivot axle 66, As with the conventional scissors type band saw, horizontal pivot 65 permits movable head 63 to rotate in the direction of arrow 67 for the purpose of carrying cutting band 68 through the workpiece 69 and thus - making a cut.
Subframe pivot axle 66 permits the movable head 63 to be selectively rotated in the direction of arrow 70 such as to permit angled cuts without reorientation of the workpiece 69.
l~Z~;624 Subframe pivot axle 66 is located such that its axis lies in the plane of, and adjacent the front edge of, the fixed workpiece vise jaw 71, while the geometry of the movable head 63 and the rotatable subframe 62 is such that the cutting plane contains the vertical projection of the subframe pivot.
A locking device 72, is interposed between the pedestal subframe 62 and the base 64 in order to maintain the desired angle of cut.
With reference to Figures 7 and 8, the improved vertical feed type band saw 81, is similar to that in Figure 2 except that a rotatable subframe 82 is interposed between the lower ends of the head guides 83 and 84, and the base 85. As with the conventional vertical feed type band saw, the head guides 83 and 84 permit the movable head 86 to translate vertically, in the direction on arrow 87, for the purpose of carrying cutting band 88 through the workpiece 89 and thus making a cut.
Rotatable subframe 82 is pivotally connected to base 85 by the vertical subframe pivot axle 90 which permits the movable head 86 to be selectively rotated in the direction of arrow 91 such as to permit angled cuts without reorientation of the workpiece 89. Subframe pivot axle 90 is located such that its axis lies in the plane of, and adjacent the front edge of, the fixed workpiece vise jaw 92, while the geometry of the movable head 86 and the rotatable subframe 82 is such that the cutting plane contains the vertical projection of the subframe pivot.
A locking device 93, is interposed between the rotatable subframe 82 and the base 85 in order to ~aintain the desired angle of cut.
SPECIFICATION
FIELD OF THE_INVENTION
This invention relates to movable head band saws and, more particularly, to a head mounting system permitting angled or mitre cuts without special orientation of the workpiece.
DESCRIPTION OF THE PRIOR ART
Movable head band saws are commonly used for cutting pieces off longer pieces of rolled, drawn, of extruded stock material They may be divided into three basic types, lo The first type, commonly known as the scissors type cut-off saw, is so named because the head of the band saw is pivotally raised and lowered, relative to the work area, in a scissors motion. ~uring the downstroke, the scissors motion of the cutting portion of the blade cuts through the workpiece.
The second type of movable head band saw may be referred to as a vertical feed saw because it employs one or two posts, which guide the head of the saw as it is vertically raised or lowered with respect to the work area, The motion of the head is a straight line translation with the head remaining horizontal The third type of movable head band saw is commonly referred to as a tilt head saw, In this type, the head is carried on a movable carriage fitted to a carriage way system which permits horizontal translation of the carriage and head, forwards and backwards, through the work area. The head is attached to the carriage by a pivotal connection, with pivot parallel to carriage translation, permitting the entire head and cutting portion of the blade to be tiited out of the vertical plane for making an angular cut in the workpiece as the head and - 1 - ~
l~Z~ 4 cutting portion of the blade are moved through the workpiece by the translation of the carriage.
These three types of movable head band saws are used primarily as "cut-off" saws for cutting pieces off relatively long work pieces, such as lengths of structural steel In some kinds of work, as in frame construction, angular or mitre cuts are frequently required. In the scissors and vertical feed types of band saws, angle cut capability has been provided by special workpiece vises in which either the whole vise, or its two jaws only, may be pivotally adjusted about a vertical axis, or axes, before the workpiece is clamped. In this way the workpiece may be held with its longitudinal axis at the desired angle to the cutting plane of the band saw Unfortunately, because workpieces are usually long and are frequently fed to the saw by roller tables, this method of making angle cuts is often impractical.
As has been mentioned, the tilt head type band saw permits angle cuts without reorientation of the workpiece, However, because of structural requirements associated with the movable carriage, and the need for a power carriage drive, tilt head band saws are characteristically large, heavy, and expensive machines.
It is, therefore, a~ object of the invention to provide a head mounting means which will enable scissors and vertical feed band saws to make angle cuts economically, and without reorientation of the workpiece, According to the invention, the head of the band saw is mounted on a rotatable subframe which is itself pivotally mounted to the base of the saw, The axis of the subframe pivot is vertical and is adjacent the front edge of the fixed jaw of the workpiece vise which is rigidly mounted to the work table portion of the saw base. A locking means is interposed between the rotatable subframe and the saw base so that the angular relationship between them may be selectively set.
The rotatable subframe lies substantially below the work table such that, within its range of angular adjustment, it does not encroach upon the workpiece area In the form in which the invention is applied to the scissors type band saw, the moving head is connected to the rotatable subframe by a horizontal pivot lying perpendicular to the cutting plane, in the same manner as the moving head is connected to the saw base in a conventional scissors type band saw.
The rotatable subframe pivot may be located such that it lies in the plane of the fixed jaw of the workpiece vise, and the geometry of the head and rotatable subframe may be made such that the cutting plane contains the vertical projection of the subframe pivot. Thus, regardless of cutting angle, the cutting plane passes through a fixed point in the plane of, and adjacent the front edge of the fixed jaw of the workpiece vise, affording simple and accurate length of cut setting, as well as uniform support of the workpiece.
In the form in which the invention is applied to the vertical feed type band saw, the rotatable subframe has two lateral extensions which support the lower ends of the vertical posts which support and guide the movable head. These extensions are configured, and the posts located, so that they do not encroach on the workpiece area. As in the scissors type saw, ~lZt;~;Z~
the cutting plane contains the vertical projection of the subframe pivot.
The manner in which these two forms of the invention achieve the object will be apparent fro~ the following description and accompanying drawings, Figure 1 is a schematic profile view of a conventional scissors type movable head band saw.
Figure 2 is a schematic profile view of a conventional vertical feed type movable head band saw, Figure 3 is a schematic profile view of a tilt frame type movable head band saw, Figure 4 is a schematic side view of a tilt frame type movable head band saw, Figure 5 is a schematic plan view of a scissors type movable head band saw incorporating a swing head ~ounting in accordance with the present invention. showing particularly the head swing and resulting angle cutting capability, Figure 6 is a schematic profile view of the machine depicted in Figure 5, Figure 7 is a schematic profile view of a vertical feed type movable head band saw incorporating a swing head mounting in accordance with the present lnvention, Figure 8 is a schematic plan view of the machine of Figure 7 showing particularly the head swing and resulting angle cutting capability, DETAILED DESCRIPTION OF THE PREFERRED ~MBODIMENTS
With reference to Figure 1, the scissors type movable head band saw 1, comprises base 2, work table 3, fixed and movable work piece vise jaws, 4 and 5 respectively, and further comprises movable head 6 carrying driving and driven band wheels.
7 and 8 respectively. Movable head 6 is pivotally connected to base 2 by pivot axle 9 which is parallel to the line formed by the intersection of the plane of the work table 3, and the plane of the fixed workpiece vise jaw 4, such that movable head 6 is permitted to move pivotally, in the direction of arrow 11, in a plane perpendicular to said line. Cutting band 12 is trained in tension around driving and driven band wheels 7 and 8, and is twisted by band guides (not shown for clarity) so that its cutting teeth are directed towards the work area 13 and the cutting portion 15 of the cutting band 12 lies in the plane of motion of the movable head 6. Workpiece 14 is supported by work table 3 and held firmly in place by fixed and movable vise jaws 4 and 5, such that, for a parallel sided workpiece, the workpiece longitudinal axis is parallel to pivot axle 9.
Thus when cutting portion 15 of the cutting band 12 is carried through the work area 13 by the motion of the movable head 6, the workpiece 14 is cut off on a plane perpendicular to its longitudinal axis With reference to Figure 2, the vertical feed type movable head band saw 21, comprises base 22, work table 23, fixed and movable workpiece vise jaws 24 and 25 respectively, and further comprises movable head 26 carrying driving and driven band wheels 27 and 28 respectively. Movable head 26 is connected to the base 22 by head guides 29 and 30 which constrain the movable head 26 to vertical motion, indicated by arrow 31, in a plane which is mutually perpendicular to the plane of the work table 23, and the plane of the fixed workpiece vise jaw 24.
Workpiece 32 is supported by work table 23 and held firmly in place by fixed and movable workpiece vise jaws 24 and 25 such that, for a parallel sided workpiece, the workpiece longitudinal axis is perpendicular to the plane of the motion of the movable head 26, Cutting band 33 is trained in tension around driving and driven band wheels 27 and 28 and is twisted by band guides lQ (not shown for clarity) so that its cutting teeth are directed towards the work area 34 and the cutting portion 35 of the cutting band 33 lies in the plane of motion of the movable head 26. Thus when cutting portion 35 of cutting band 33 is carried through the work area 34, by the motion of the movable head 26, the workpiece 32 is cut off on a plane perpendicular to its longitudinal axis.
With reference to Figures 3 and 4, the tilt frame type movable head band saw 41, comprises movable head 42 which is pivotally connected by pivot axle 43 to carriage 44, such that movable head 42 is permitted to move pivotally, in the direction of arrow 60, in a plane parallel to the plane of the saw front 47 The carriage 44 is slidably supported, through way bars 45, by base 46, such that carriage 44 and movable head 42 are permitted to move toward and away from saw front 47, in the direction indicated by arrow 48 Movable head 42 carries driving and driven band wheels 49 and 50 respectively, about which cutting band 51 is trained in tension. Cutting band 51 is twisted by cutting band guides 52 and 53 so that its cutting teeth are directed toward the worX area 54, and the cutting portion 56 of 1~2~ 4 the cutting band 51 lies in a vertical plane which is parallel to the line of movable head motion, and mutually perpendicular to the planes of the work table 55 and the fixed workpiece vise jaw 57 To make a cut, driving band wheel 49 is caused to rotate, and movable head 42 is advanced to carry cutting portion 56 of cutting band 51 through the workpiece 59 which is supported by work table 55, and held firmly in place by fixed and movable workpiece vise jaws 57 and 58 For a parallel sided workpiece, the resulting cut is on a plane perpendicular to its longitudinal axis.
By means of pivot axle 43, the movable head 42 may be selectively tilted out of the vertical plane such that, as the movable head 42 is moved through the work area 54, as angular cut is made through the workpiece 59.
With reference to Figures 5 and 6, the improved scissors type movable head band saw 61 is similar to that in Figure 1 except that a rotatable subframe 62 is interposed between the movable head 63 and the base 64. Movable head 63 is pivotally connected, by horizontal pivot axle 65, to rotatable subframe 62 which is itself pivotally connected to base 64 by the vertical subframe pivot axle 66, As with the conventional scissors type band saw, horizontal pivot 65 permits movable head 63 to rotate in the direction of arrow 67 for the purpose of carrying cutting band 68 through the workpiece 69 and thus - making a cut.
Subframe pivot axle 66 permits the movable head 63 to be selectively rotated in the direction of arrow 70 such as to permit angled cuts without reorientation of the workpiece 69.
l~Z~;624 Subframe pivot axle 66 is located such that its axis lies in the plane of, and adjacent the front edge of, the fixed workpiece vise jaw 71, while the geometry of the movable head 63 and the rotatable subframe 62 is such that the cutting plane contains the vertical projection of the subframe pivot.
A locking device 72, is interposed between the pedestal subframe 62 and the base 64 in order to maintain the desired angle of cut.
With reference to Figures 7 and 8, the improved vertical feed type band saw 81, is similar to that in Figure 2 except that a rotatable subframe 82 is interposed between the lower ends of the head guides 83 and 84, and the base 85. As with the conventional vertical feed type band saw, the head guides 83 and 84 permit the movable head 86 to translate vertically, in the direction on arrow 87, for the purpose of carrying cutting band 88 through the workpiece 89 and thus making a cut.
Rotatable subframe 82 is pivotally connected to base 85 by the vertical subframe pivot axle 90 which permits the movable head 86 to be selectively rotated in the direction of arrow 91 such as to permit angled cuts without reorientation of the workpiece 89. Subframe pivot axle 90 is located such that its axis lies in the plane of, and adjacent the front edge of, the fixed workpiece vise jaw 92, while the geometry of the movable head 86 and the rotatable subframe 82 is such that the cutting plane contains the vertical projection of the subframe pivot.
A locking device 93, is interposed between the rotatable subframe 82 and the base 85 in order to ~aintain the desired angle of cut.
Claims (5)
1. An improved movable head band saw of the known type comprising a fixed base supporting a rigidly attached work table with fixed and movable workpiece vise jaws, and further comprising a movable head carrying driving and driven band wheels over which passes a continuous cutting band, said movable head being free to move in a vertical plane such that said cutting band traverses a work area defined by said work table, and said fixed and movable workpiece vise jaws: wherein the improvement comprises a rotatable subframe interposed between said movable head and said fixed base, said rotatable subframe being pivotally connected to said fixed base by a vertical pivot, such that selective rotation of said rotatable subframe about said vertical pivot rotates the cutting plane of said cutting band with respect to the plane of said fixed workpiece vise jaw permitting the angle of intersection of said planes to be selectively set,
2. An improved movable head band saw of the scissors type comprising a fixed base supporting a rigidly attached work table with fixed and movable workpiece vise jaws, and further comprising a movable head carrying driving and driven band wheels over which passes a continuous cutting band, said movable head being mounted on, and free to rotate about, a horizontal pivot, such that said cutting band traverses a work area defined by said work table and by said fixed and movable workpiece vise jaws;
wherein the improvement comprises a rotatable subframe carrying said horizontal pivot, said rotatable subframe being pivotally connected to said fixed base by a vertical pivot, such that selective rotation of said rotatable subframe about said vertical pivot rotates the cutting plane of said cutting band with respec-to the plane of said fixed workpiece vise jaw permitting the angle of intersection of said planes to be selectively set
wherein the improvement comprises a rotatable subframe carrying said horizontal pivot, said rotatable subframe being pivotally connected to said fixed base by a vertical pivot, such that selective rotation of said rotatable subframe about said vertical pivot rotates the cutting plane of said cutting band with respec-to the plane of said fixed workpiece vise jaw permitting the angle of intersection of said planes to be selectively set
3. An improved movable head band saw of the vertical feed type comprising a fixed base supporting a rigidly attached work table with fixed and movable workpiece vise jaws, and further comprising a movable head carrying driving and driven band wheels over which passes a continuous cutting band, said movable head being slidably mounted on vertical guide posts for vertical translation such that said cutting band traverses a work area defined by said work table, and said fixed and movable workpiece vise jaws; wherein the improvement comprises a rotatable subframe carrying said vertical guide posts, said rotatable subframe being pivotally connected to said fixed base by a vertical pivot, such that selective rotation of said pedestal subframe about said vertical pivot rotates the cutting plane of said cutting band with respect to the plane of said fixed workpiece vise jaw permitting the angle of intersection of said planes to be selectively set.
4. An improved movable head band saw of the scissors type as recited in claim 2 in which the vertical subframe pivot lies in the plane of, and adjacent the front edge of, the fixed jaw of the workpiece vise, and in which the geometry of the movable head and said rotatable subframe is such that the cutting plane contains the vertical projection of said vertical subframe pivot.
5. An improved movable head band saw of the vertical feed type as recited in claim 3 in which the vertical subframe pivot lies in the plane of, and adjacent the front edge of, the fixed jaw of the workpiece vise, and in which the geometry of the movable head and said rotatable subframe is such that the cutting plane contains the vertical projection of said vertical subframe pivot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA377,790A CA1126624A (en) | 1981-05-19 | 1981-05-19 | Band saw with improved angle cutting capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA377,790A CA1126624A (en) | 1981-05-19 | 1981-05-19 | Band saw with improved angle cutting capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1126624A true CA1126624A (en) | 1982-06-29 |
Family
ID=4119979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA377,790A Expired CA1126624A (en) | 1981-05-19 | 1981-05-19 | Band saw with improved angle cutting capability |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1126624A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0491120A1 (en) * | 1990-12-18 | 1992-06-24 | Meba Maschinenbau Gmbh | Metal cutting band saw |
| EP0671234A1 (en) * | 1994-03-11 | 1995-09-13 | WEGENER GmbH | Mitering band saw |
| US5878644A (en) * | 1997-03-17 | 1999-03-09 | Hyd-Mech Group Limited | Pivotable carriage vertical band saw machine |
-
1981
- 1981-05-19 CA CA377,790A patent/CA1126624A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0491120A1 (en) * | 1990-12-18 | 1992-06-24 | Meba Maschinenbau Gmbh | Metal cutting band saw |
| EP0671234A1 (en) * | 1994-03-11 | 1995-09-13 | WEGENER GmbH | Mitering band saw |
| US5878644A (en) * | 1997-03-17 | 1999-03-09 | Hyd-Mech Group Limited | Pivotable carriage vertical band saw machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2036350C (en) | Vertical band saw | |
| JP7372057B2 (en) | Saw machine for miter cutting | |
| US4335637A (en) | Circular saw | |
| GB1455175A (en) | Cutting machines | |
| CN208322306U (en) | Horizontal metal band sawing machine | |
| US5408909A (en) | Arrangement for measuring and cutting a workpiece | |
| CA1126624A (en) | Band saw with improved angle cutting capability | |
| US20050022643A1 (en) | Method for separating work pieces | |
| US5341712A (en) | Band saw column assembly | |
| CA1204650A (en) | Tiltable edger saw mechanism | |
| CN220575228U (en) | Numerical control sawing machining center equipment for doors and windows | |
| US4732184A (en) | Lumber saw-sizing machine | |
| CN214981357U (en) | Arc cutting equipment | |
| CN115319123A (en) | Multi-shaft turning device for metal product processing | |
| GB2057349A (en) | Band saw blade guide | |
| US3738214A (en) | Radial arm saw | |
| CN220943471U (en) | Workpiece fixing tool | |
| CN216442611U (en) | Sponge cutting machine with adjustable cutting width | |
| KR100318062B1 (en) | A band sawing machine for a steel cutting | |
| CN222493202U (en) | Cutting device for door and window processing | |
| JP2607502Y2 (en) | Vice device for cutting machine | |
| CN219053598U (en) | Cutting device for conductive plate of silicon steel welding machine | |
| CN212976958U (en) | Sawing structure of metal band sawing machine | |
| CN206139907U (en) | No base sawing machine | |
| JPH0546806Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |