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A cutting tool system includes a clamping device and a cutting tool mounted therein. The cutting tool carries a cutting edge and includes a shaft clamped within an aperture of the clamping device. Prior to being clamped, the shaft is movable relative to the clamping device in either a longitudinal o

A cutting tool system includes a clamping device and a cutting tool mounted therein. The cutting tool carries a cutting edge and includes a shaft clamped within an aperture of the clamping device. Prior to being clamped, the shaft is movable relative to the clamping device in either a longitudinal or rotational direction, in order to locate the cutting edge in a desired position. Either the clamping device or the cutting tool carries a spring-loaded device which engages a recess formed in the other of the cutting tool and clamping device when the cutting tool and its cutting edge are in a desired position, to provide an indication that the cutting tool is in such desired position by providing a sudden increase in a force necessary to displace the cutting tool out of such desired position.

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1. A cutting tool system comprising:a clamping device including a clamping block having an aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixe

1. A cutting tool system comprising:a clamping device including a clamping block having an aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a tool-securing clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface; a spring-loaded element projecting from one of the envelope surface and the aperture surface and biased by a spring force acting in a direction of bias wherein the spring-loaded element yieldably engages a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position, wherein the spring-loaded element is displaceable from the recess in a direction of displacement which is substantially oppsite the direction of bias; and a clamp actuator arranged to act on the clamping block to cause the clamping block to apply the tool-securing clamping force to the shaft independently of the spring-loaded element. 2. The cutting tool system according to claim 1 wherein the shaft, when the clamping force is released, is displaceable by being rotatable about a longitudinal axis of the shaft, the spring-loaded element opposing such rotation of the shaft.3. The cutting tool system according to claim 1 wherein the shaft, when the clamping force is released, is displaceable along a longitudinal axis of the shaft, the spring-loaded element opposing such longitudinal movement of the shaft.4. The cutting tool system according to claim 3 wherein the shaft, when the clamping force is released, is also displaceable by being rotatable about the longitudinal axis, the spring-loaded element opposing such rotation.5. The cutting tool system according to claim 1 wherein the shaft portion and the aperture define a common longitudinal axis, the envelope surface being substantially cylindrical and the recess comprises a groove extending parallel to the longitudinal axis.6. The cutting tool system according to claim 1 wherein the shaft portion and the aperture define a common longitudinal axis, the envelope surface being substantially cylindrical, the recess comprising at least one dimple.7. The cutting tool system according to claim 6 wherein the at least one dimple comprises a line of dimples extending parallel to the axis.8. The cutting tool system according to claim 1 wherein the shaft portion and the aperture define a common longitudinal axis, the recess comprising at least one groove lying in a plane oriented perpendicularly to the axis.9. The cutting tool system according to claim 1 wherein the envelope surface and the aperture define a common longitudinal axis, the envelope surface and the aperture surface being of polygonal cross section, the recess comprising at least one groove lying in a plane oriented perpendicularly to the axis.10. The cutting tool system according to claim 1 wherein the recess has a generally V-shaped cross section, the spring-loaded element comprising a rotatable element.11. A tool-clamping device comprising a block having an aperture adapted to receive and clamp a shaft of a cutting tool, a spring-loaded element mounted in the block and projecting into the aperture for yieldably contacting the shaft, and a clamping actuator arranged to act on the block independently of the spring-loaded element for reducing a cross section of the aperture to clamp the shaft, wherein the element is loaded by a spring force acting in a direction of bias, the element being displaceable counter to the spring bias in a direction of displacement which is substantially opposite the direction of bias.12. The tool-clamping device according to claim 11 wherein the spring-biased element comprises a rotatable element spring-biased toward the aperture.13. The tool-clamping device according to claim 12 wherein the rotatable element comprises a sphere.14. A cutting tool system comprising:a clamping device including a clamping block having an aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface, and a spring-loaded device projecting from one of the envelope surface and the aperture surface and yieldably engaging a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position; wherein the shaft, when the clamping force is released, is displaceable by being rotatable about a longitudinal axis of the shaft, the spring-loaded device opposing such rotation of the shaft. 15. A cutting tool system comprising:a clamping device including a clamping block having an aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface, and a spring-loaded device projecting from one of the envelope surface and the aperture surface and yieldably engaging a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position; wherein the shaft portion and the aperture define a common longitudinal axis, the envelope surface being substantially cylindrical and the recess comprises a groove extending parallel to the longitudinal axis. 16. A cutting tool system comprising:a clamping device including a clamping block having an aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface; and a spring-loaded device projecting from one of the envelope surface and the aperture surface and yieldably engaging a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position; wherein the shaft portion and the aperture define a common longitudinal axis, the recess comprising at least one groove lying in a plane oriented perpendicularly to the axis, the at least one groove comprising a plurality of grooves spaced apart along the axis at regular 10 mm intervals. 17. A cutting tool system comprising:a clamping device including a clamping block having an aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a tool-securing clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface; a spring-loaded element projecting from one of the envelope surface and the aperture surface and yieldably engaging biased by a spring force acting in a direction of bias wherein the spring-loaded element yieldably engages a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position; and a clamp actuator arranged to act on the clamping block to cause the clamping block to apply the tool-securing clamping force to the shaft independently of the spring-loaded element; wherein the shaft, when the clamping force is released, is displaceable along a longitudinal axis of the shaft, the spring-loaded element opposing such longitudinal movement of the shaft; wherein the shaft, when the clamping force is released, is also displaceable by being rotatable about the longitudinal axis, the spring-loaded element opposing such rotation. 18. A cutting tool system comprising:a clamping device including a clamping block having an aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a tool-securing clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface; a spring-loaded element projecting from one of the envelope surface and the aperture surface and yieldably engaging biased by a spring force acting in a direction of bias wherein the spring-loaded element yieldably engages a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position; and a clamp actuator arranged to act on the clamping block to cause the clamping block to apply the tool-securing clamping force to the shaft independently of the spring-loaded element; wherein the shaft portion and the aperture define a common longitudinal axis, the recess comprising at least one groove lying in a plane oriented perpendicularly to the axis. 19. The cutting tool according to claim 18 wherein the at least one groove comprises a plurality of grooves spaced apart along the axis at regular intervals.20. The cutting tool system according to claim 19 wherein the grooves are spaced apart by about 10 mm.21. A cutting tool system comprising: a clamping device including a clamping block having an aperture, the aperture including an aperture surface;a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a tool-securing clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface; a spring-loaded element projecting from one of the envelope surface and the aperture surface and yieldably engaging biased by a spring force acting in a direction of bias wherein the spring-loaded element yieldably engages a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position; and a clamp actuator arranged to act on the clamping block to cause the clamping block to apply the tool-securing clamping force to the shaft independently of the spring-loaded element; wherein the shaft portion and the aperture define a common longitudinal axis, the recess comprising at least one groove lying in a plane oriented perpendicularly to the axis. 22. The cutting tool system according to claim 21 wherein the at least one groove comprises a plurality of grooves spaced apart at regular intervals along the axis.23. A cutting tool system comprising:a clamping device a clamping block having a aperture, the aperture including an aperture surface; a cutting tool including a front portion at which a cutting edge is disposed, and a shaft extending rearwardly from the front portion, the shaft being fixed in the aperture by a tool-securing clamping force that is releasable to enable the shaft to be displaced relative to the clamping device to a desired position for properly orienting the cutting edge, the shaft including an outer envelope surface facing the aperture surface; a spring-loaded element projecting from one of the envelope surface and the aperture surface and yieldably engaging biased by a spring force acting in a direction of bias wherein the spring-loaded element yieldably engages a recess formed in the other of the envelope surface and the aperture surface when the cutting tool and its cutting edge are in the desired position, to provide an indication that the cutting tool is in such desired position by requiring a sudden increase in a force necessary to displace the cutting tool from the desired position; and a clamp actuator arranged to act on the clamping block to cause the clamping block to apply the tool-securing clamping force to the shaft independently of the spring-loaded element; wherein the recess has a generally V-shaped cross section, the spring-loaded element comprising a rotatable element. 24. The cutting tool system according to claim 23 wherein the rotatable element is a sphere.25. The cutting tool system according to claim 23 wherein a spring biasing the rotatable element comprises a coil spring.26. The cutting tool system according to claim 23 wherein a spring biasing the rotatable element comprises an elastomer.27. The cutting tool system according to claim 23 wherein a center of the rotatable element is situated outside of the recess.28. The cutting tool system according to claim 27 wherein the recess defines a V-shape having an angle in the range of 35-85°.29. The cutting tool system according to claim 28 wherein the angle is in the range of 55-65°.30. The cutting tool system according to claim 28 wherein the angle is substantially 60°.