Abstract:
Reamers, when operated with large amounts of material removed and at high reaming speeds, encounter difficulties when they ream in material in which permanent structural changes occur on the application of heat and subsequent rapid cooling. These difficulties are avoided in that the transition region between the main cutting edge and the minor cutting edge follows a constantly curved path at least one end region of which runs tangentially to at least the minor cutting edge.
Abstract:
A process for adjusting an effective tool diameter D and an effective tilt angle .alpha. of a cutting tool to a stipulated tool diameter and a stipulated tilt angle, respectively. The cutting tool includes a cutting blade disposed on a shaft and defining a cutting point and a cutting edge tilted by the effective tilt angle with respect to a rotational axis of the shaft, and a guide element disposed on the shaft opposite the cutting blade and defining a guide point and a guide line, the cutting point and the guide point being disposed on a cutting plane of the cutting tool. The process includes the steps of utilizing a measurement arrangement including a camera and a measurement slide supporting the camera; moving the measurement arrangement for acquiring the guide point on the camera; and moving the measurement arrangement to the cutting point for acquiring the cutting point on the camera. The process further includes the steps of determining the effective tool diameter D by determining the distance travelled by the measurement slide between the guide point and the cutting point; determining the effective tilt angle .alpha. by acquiring the tilt angle on the camera; converting the effective tilt angle .alpha. into an effective tilt diameter D1; adjusting the effective tool diameter D to the stipulated tool diameter; and adjusting the effective tilt angle .alpha. to the stipulated tilt angle by adjusting the effective tilt diameter D1 to a stipulated tilt diameter.
Abstract:
A reamer tip including a main cutting edge and a auxiliary cutting edge adjoining the first main cutting edge; and a flank provided in a region of the main and auxiliary cutting edges and including a first inclined flank region having a first back angle of about 7.degree., and a second inclined flank region directly adjoining the auxiliary cutting edge, extending from the auxiliary cutting edge to the first flank region, and having a second back angle substantially smaller than the first back angle.
Abstract:
A reamer includes a shank portion and a reamer head fixed to the shank portion. A cutting blade is mounted on the reamer head to project axially forwardly from the front end of the reamer head. A bearing guide pad is mounted on the reamer head circumferentially spaced from the cutting blade downstream with respect to the rotating direction of the reamer, and a sizing guide pad is mounted on the reamer head substantially diametrically opposed to the cutting blade. The axial lengths (L2) of the guide surfaces of the bearing guide pad and the sizing guide pad are both not larger than the axial length (L1) of the circle land of the cutting blade, the axial length (L1) of the cutting blade is not larger than the diameter (D) of the reamer, and the width (W2) of the sizing guide pad is not larger than the width (W1) of the bearing guide pad. The axial lengths (L2) of the guide surfaces of the guide pads are preferably 5 mm to 15 mm where the diameter of the reamer is 5 mm to 100 mm.
Abstract:
A reamer comprises a single, adjustable, elongate carbide blade clamped in position in an axial slot in the reamer periphery by means of a clamping plate, with the slot having a positive rake blade supporting fade so that the blade is adjustable along a line parallel to a tangent to the reamer periphery.
Abstract:
Adjustment of the radial position of the tool bit is accomplished by insertion of the bit in a recess of a clamping shoe which clamps the bit against a shoulder in the cutter head. The clamping shoe has an extension which is rotatably mounted in a recess in the cutter head. A single wedge-shaped adjustment member rotates the clamping shoe with the cutter blade thereby changing the radial distance between the cutting edge and the axis of rotation of the tool.
Abstract:
A reamer comprises a single, adjustable, elongate carbide blade clamped in position in an axial slot in the reamer periphery by means of a clamping plate, with the slot having a positive rake blade supporting fade so that the blade is adjustable along a line parallel to a tangent to the reamer periphery.
Abstract:
The reamer has a flat rectangular reversible cutting bit which has a wide-side face, a wide-side contact surface parallel to said wide-side face and a narrow-side contact surface and possesses a cutting edge extending parallel to the longitudinal axis of a revolvable body and projecting above the circumferential surface of the body. The reversible cutting bit is mounted detachably in a recess of the revolvable body and makes contact with a supporting surface extending substantially in a radial direction and also with a base support extending at right angles to the former. The radial support surface of the revolvable body is narrower than the base support of the recess. The wide-side contact surface of the reversible cutting bit makes contact with the base support over a large area. The narrow-side contact surface of the reversible cutting bit is disposed at the radial support surface of the revolvable body. The wide-side face of the reversible cutting bit is disposed in secant-like fashion with respect to the body and the cutting edge projecting above the body is formed by the leading edge of the wide-side face extending in secant-like fashion and by a narrow-side clearance surface extending approximately radially in the body.
Abstract:
The cutter head of a reamer has a groove shaped for receiving a cutting blade which partly separates an integral jaw portion from the remainder of the cutting head. A clamping screw permits the jaw portion to be tightened on the cutting blade whose mobility is increased by a slot in a plane intersecting the groove at an obtuse angle. Further slots may be provided for distributing the pressure of the jaw portion on the blade in a desired manner.