1. A collapsible refuse can comprising:
A can body consisting of two half shells, each said half shelf having a U-shape and two vertical end edges formed respectively with an inner hook strip for an outer elongate hook strips to hook with for combine said two half shelf to form said can body:
A bottom fitting in a lower portion of said can body, made integral, having a vertical groove respectively formed in two opposite sides for said two outer elongate hooks to fit therein to combine said bottom with said can body:
A pedal made of an elongate rod bent to shape as a pedal, having two ends respectively formed with a hole to align with the holes of the two opposite sides of said bottom for a rivet to fit in for combining said pedal with said bottom after the two ends of said pedal are inserted through the two holes of said can body and said bottom, said pedal further having a sidewise hole in a left side portion:
A cap opening member made of an elongate rod bent into double L-shape, having a lower male-threaded end to pass through said sidewise hole of said pedal and screwing tightly with a nut with a washer and an upper end passing through the vertical hole of said bottom and pivotally connected with said cap: and,
Said pedal stepped down at the front portion to let its two ends to lift up said cap opening member to push open said cap for refuse to be thrown into a refuse bag placed in said can body.
2. A collapsible refuse can as claimed in claim 1, wherein further a plurality of bag hangers fixed spaced apart on an inner circumferential surface of said fix frame fixed around an inner periphery of said can body, each said bag hangers consisting of a position member and a bendable member, said position member fixed on the inner circumferential surface of said fix frame and having a curved portion to extend forward from an intermediate section and a saw-toothed pinching portion formed in a lower portion, said bendable member positioned to vertical to said position member and having a sidewise shaft formed at its rear end and fitted rotatably in the curved portion of said position member, said bendable member pushed to swing down with the shaft as a pivot to fit on the pinching portion to let one point of an upper end of a refuse bag sandwiched between the lower saw-toothed pinching portion and the groove portion so that the refuse bag may be hung in the refuse can.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of making an eccentric cam on a camshaft comprising:
supporting and rotating a camshaft about its longitudinal axis;
providing a milling cutter having a rotating milling head rotatable about an axis with cutting edges in a circular array about the axis of rotation of the milling head;
positioning the cutting edges to move in a path, the plane of which forms an angle of less than 90\xb0 with the camshaft axis;
rotating the milling head and feeding the milling head toward and from the axis of the camshaft to a peripheral surface on an eccentric cam lobe; and
shifting the cutting edges relative to the camshaft lobe while milling the lobe’s peripheral surface so that the cutting edges cut the camshaft lobe’s peripheral surface to be parallel to the cam shaft axis.
2. A method in accordance with claim 1 wherein the shifting of the cutting edges comprises:
pivoting the milling head about another axis so that as the milling head moves toward or from the cam lobe, the tangent points of the cutting edges being always in line with the center axis of the camshaft.
3. A method in accordance with claim 1 wherein the shifting of the cutting edges comprise:
moving the cutting head along a Z-axis.
4. A method of making two cam profiles on a camshaft lobe comprising:
supporting and rotating a camshaft about its longitudinal axis;
providing a milling cutter having a rotating milling head rotatable about a first axis with cutting edges in a circular array about the axis of rotation of the milling head;
positioning the cutting edges to move in a path, the plane of which forms an angle of less than 90\xb0 with the camshaft axis;
rotating the milling head and feeding the milling head toward and from the axis of the camshaft and cutting a peripheral surface on the cam lobe to form a first cam profile;
repositioning the milling cutter to rotate about a second axis and feeding the milling head toward the camshaft lobe and cutting the peripheral surface of the cam lobe to form a second cam profile adjacent the first cam profile; and
shifting the cutting edges so that they cut the camshaft lobe’s peripheral surface to be parallel to the cam shaft axis.
5. An apparatus for making an eccentric cam on a camshaft comprising:
supports for supporting and rotating a camshaft about its longitudinal axis;
a milling cutter having a rotating milling head rotatable about an axis;
cutting edges in a circular array about the axis of rotation of the milling head;
the milling cutter positioning the cutting edges to move in a path, the plane of which forms an angle of less than 90\xb0 with the camshaft axis;
a drive for rotating the milling head and for feeding the milling head toward and from the axis of the camshaft to a peripheral surface on an eccentric cam lobe; and
a shifter for shifting the cutting edges so that they cut the camshaft lobe’s peripheral surface to be parallel to the cam shaft axis.
6. A milling machine for milling eccentric lobes on a camshaft;
a base;
a headstock on a sliding axis \u201cB\u201d having a spindle, workpiece locating clamping and rotating means by a servo motor axis \u201cA;\u201d
a tailstock with a quill and center that is adjustable for different lengths of camshafts;
a cutter spindle mounted to a compound slide with Y and Z-axis servo feed along with a \u201cC\u201d axis for pivoting the cutter spindle to an angle to cut an eccentric cam lobe with the peripheral surface of the lobe being parallel to a rotating axis for the camshaft about 360\xb0 of the eccentric lobe.
7. A method of making an eccentric cam on a camshaft comprising:
supporting and rotating a camshaft about its longitudinal axis;
providing a milling cutter having a rotating milling head rotatable about an axis with cutting tools having cutting edges in a circular array about the axis of rotation of the milling head;
positioning the cutting edges to move in a path, the plane of which forms an angle of less than 90\xb0 with the camshaft axis;
rotating the milling head and feeding the milling head toward and from the axis of the camshaft to a peripheral surface on an eccentric cam lobe; shifting the cutting edges so that they cut the camshaft lobe’s peripheral surface to be parallel to the cam shaft axis; and
positioning the milling head substantially vertically and allowing two crank shafts to be machined simultaneously and facilitating an automatic changing of the cutting tools.