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Metal Band Saw: Horizontal Saw on a Welded Steel Frame
Curtis Eccardt's horizontal power band saw (Emerson Electric, US 4,364,294, 1982), built from welded steel channel and tube instead of iron castings to cut its cost. The saw head swings down on trunnions over the bed; a hydraulic cylinder with a valve sets how fast it feeds, a spring counterbalances it, and a spring tensioner shows the blade tension on a scale. Two guides with rollers twist the blade's lower run 90° so its teeth face down into the work, and carbide inserts hold it there.
The patent gives no sizes, speeds or ratings; the welder and wrenches are ours. The picture: the patent's Fig. 1.
Abantado
4 days
Mga Tagubilin
1
1
Weld the bed
Weld the bed
Stand two steel channels (9a, 9b) parallel, webs upright and flanges facing in, and weld gussets (15) between their webs. Bolt a bed plate (17) across the top flanges as the work surface. Ours: MIG welder, drill press for the bolt holes.
Mga materyales para sa hakbang na ito:
Seksiyong asero na hugis U2 piraso
Plantsang asero na malambot1 piraso
Turnilyong anim-anggulo - uri 8.81 pirasoMga kailangang kasangkapan:
Pamperang MIG
Baradong Nakatayo
Llaveng ingles2
2
Weld and bolt on the legs
Weld and bolt on the legs
Weld formed sheet-steel legs onto horizontal floor members to make front and rear leg weldments (19, 21), and bolt them under the bed.
Mga materyales para sa hakbang na ito:
Plantsang asero1 piraso
Tubong bakal na pang-istruktura1 pirasoTurnilyong anim-anggulo - uri 8.81 pirasoMga kailangang kasangkapan:
Pamperang MIGLlaveng ingles3
3
Weld the head
Weld the head
Weld a head post (25) of square or rectangular steel tube square to a head beam (27) of rectangular tube. Weld a bracket leg (29) down from the beam's outer end, and fix support plates at both ends (31, 33).
Mga materyales para sa hakbang na ito:
Tubong bakal na pang-istruktura1 pirasoPlantsang asero na malambot1 pirasoMga kailangang kasangkapan:
Pamperang MIG4
4
Fit the trunnions and align the pivot
Fit the trunnions and align the pivot
Fix a shaft through the head post with its ends out as trunnions (55a, 55b), in bushings in two bearing blocks (59a, 59b) bolted inside the channel webs. Each block has one close-fit bolt hole and three oversize ones: shift the blocks until the pivot is parallel to the bed plate, then torque the bolts. A set screw (67) takes out end play.
Mga materyales para sa hakbang na ito:
Bakal na baras1 piraso
Metal na bushing2 piraso
Kinalalagyan ng bearing2 pirasoTurnilyong anim-anggulo - uri 8.88 piraso
Turnilyong pang-ipit na malukong ang dulo1 pirasoMga kailangang kasangkapan:
Baradong Nakatayo
Liyabe sa puwersang pampihit5
5
Mount motor, belt drive and gearbox
Mount motor, belt drive and gearbox
Mount the electric motor (37) on a plate (38) pivoted on the head beam, and couple it by a multi-speed belt and pulleys (41) to a gearbox (39). Fit the drive wheel (43) on the gearbox output shaft.
Mga materyales para sa hakbang na ito:
De-kuryenteng motor1 pirasoPlantsang asero na malambot1 piraso
Sinturong pampaandar1 piraso
Kalo1 piraso
Gearbox1 piraso
Gulong ng band saw1 pirasoMga kailangang kasangkapan:
Llaveng ingles6
6
Build the idler tensioner
Build the idler tensioner
Weld an idler yoke (87) of rolled steel plate, pivot it on the head beam with a pin (89), and cantilever the idler axle from it with the idler wheel (45) on bearings (85). A threaded rod (91) pulls the yoke through a coil spring (93) held between compression plates and a U-bolt (97); a knob (99) turns the rod. An indicator (101) on the spring reads the tension on a scale (103).
Mga materyales para sa hakbang na ito:
Plantsang asero na malambot1 piraso
Aserong pin1 pirasoBakal na baras1 pirasoGulong ng band saw1 piraso
Ball Bearing1 piraso
Baras na may sinulid1 piraso
Coil Spring1 piraso
Pernong hugis-U1 piraso
Pihitan ng kontrol1 pirasoMga kailangang kasangkapan:
Pamperang MIGLlaveng ingles7
7
Build the two blade guides
Build the two blade guides
In each guide channel (111) mount two guide rollers (115a, 115b) on ball bearings on eccentric bushings, one fixed and one adjusted to the blade thickness. Add a carbide thrust insert (133) on the blade's back edge and two carbide side inserts (137a fixed, 137b on a sprung swing bracket set by a bolt and knob). Clamp the guides on two bar tracks (107).
Mga materyales para sa hakbang na ito:
Gabay na roller4 pirasoBall Bearing4 piraso
Eccentric na bushing4 piraso
Carbide na insert6 pirasoCoil Spring2 pirasoPihitan ng kontrol2 pirasoTubong bakal na pang-istruktura1 pirasoMga kailangang kasangkapan:
Llaveng ingles8
8
Fit the blade and set the tension
Fit the blade and set the tension
By hand, run the endless blade (47) round the drive and idler wheels and through both guides; the rollers twist its lower run about 90° so the teeth face down. Turn the tension knob until the scale shows the tension you want.
Mga materyales para sa hakbang na ito:
Talim ng band saw1 piraso9
9
Fit the feed cylinder and counterbalance
Fit the feed cylinder and counterbalance
Connect a hydraulic cylinder (71) between bed channel and head post above the trunnions, filled with oil and piped through tubing (75) to a control valve (73): the valve sets the feed rate and, closed, holds the head. Fit a coil spring (78) on a threaded linkage (79) between an end gusset and the head post below the trunnions, adjusted by a knob (80), to counterbalance the head.
Mga materyales para sa hakbang na ito:
Silindrong hidroliko1 piraso
Langis na haydroliko1 batch
Tubong haydroliko1 piraso
Balbulang pangkontrol ng daloy1 pirasoCoil Spring1 pirasoBaras na may sinulid1 pirasoPihitan ng kontrol1 pirasoMga kailangang kasangkapan:
Llaveng ingles10
10
Bolt on the vice
Bolt on the vice
Bolt the quick-acting vice to the bed plate to clamp the work square under the blade.
Mga materyales para sa hakbang na ito:
Bais ng makina1 pirasoTurnilyong anim-anggulo - uri 8.81 pirasoMga kailangang kasangkapan:
Llaveng inglesMga Materyales
29- 2 pirasoPlaceholder
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- 11 pirasoPlaceholder
- 1 pirasoPlaceholder
- 1 pirasoPlaceholder
- 1 pirasoPlaceholder
- 2 pirasoPlaceholder
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Ang blueprint na ito ay gumagawa ng
CC0 Pampublikong Domain
Ang blueprint na ito ay inilabas sa ilalim ng CC0. Malaya kang kumopya, magbago, mamahagi, at gumamit nang walang pahintulot.
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