Power drill and force transducer for such a drill

A force transducer for use in a power drill comprising a motor, and a front bearing and a rear bearing, said front and rear bearing being arranged in a housing to thereby support an axle assembly, wherein the axle assembly comprises a first end drivingly connected to said motor and a second end configured to engage a drill attachment, wherein said axle assembly and at least one of said front bearing and/or said rear bearing further form an additional assembly movably arranged with respect to said housing such that a limited axial movement between said housing and said additional assembly is allowed,

• wherein the force transducer comprising:
• a first end portion extending along an axial direction defined from said first end to said second end of said axle assembly and a second end portion extending along said axial direction laterally in a direction opposite of the first end portion, and an intermediate portion defining a disc located between said first and second end portions and extending radially outward from the axial direction relative to said first and second end portions, said intermediate portion being coaxially arranged with respect to said front and rear bearing,
• wherein said force transducer is axially supported by said housing, and
• wherein said additional assembly is axially supported by said force transducer, said force transducer thereby being configured to sense a measured quantity over said disc shaped portion and output a signal representing an axial force acting on said additional assembly.

A detachable front part for a power drill, where the power drill comprises a drill housing and a motor, the detachable front part comprising:

• a front part housing adapted to be attached to the drill housing and a front bearing and a rear bearing, said front and rear bearing being arranged in said front part housing to support an axle assembly, wherein the axle assembly comprises a first end drivingly connected to said motor and a second end configured to engage a drill attachment, wherein said axle assembly and at least one of said front bearing and said rear bearing further form an additional assembly movably arranged with respect to said front part housing such that a limited axial movement between said front part housing and said additional assembly is allowed;
• and
• a force transducer, wherein said force transducer is axially supported by said front part housing, the force transducer comprising a first end portion extending along an axial direction defined from said first end to said second end of said axle assembly, a second end portion extending along said axial direction laterally in a direction opposite of the first end portion, and an intermediate portion defining a disc located between said first and second end portions and extending radially outward from the axial direction relative to said first and second end portions, said intermediate portion being coaxially arranged with respect to said front and rear bearing, and
• wherein said additional assembly is axially supported by said force transducer, said force transducer thereby being configured to sense a measured quantity over said disc shaped portion, and output a signal representing an axial force acting on said additional assembly.