A tapping unit (1) includes a protection device (12) for permitting an axial retraction movement of a master screw (4) towards the interior of a casing (2) from a reference position into a first proximal backward position with a first defined penetration stroke during which a first elastic return device (13) constantly returns the master screw (4) to its reference position. The protection device (12) furthermore permits an additional axial retraction movement of the master screw (4) towards the interior of the casing (2) from the proximal backward position into a second proximal backward position with a defined penetration stroke during which the master screw (4) is no longer returned towards the exterior of the casing (2).
B23G 3/00 - Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle
B23G 3/02 - Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle for withdrawing or resetting the threading tool
B23B 31/08 - Chucks holding tools or work yieldably
Tapping unit (1) comprising protection means (12) for permitting an axial retraction movement of a master screw (4) towards the interior of a casing (2) from a reference position into a first proximal backward position with a first defined penetration stroke during which first elastic return means (13) constantly return the master screw (4) to its reference position. The protection means (12) furthermore permit an additional axial retraction movement of the master screw (4) towards the interior of the casing (2) from the proximal backward position into a second proximal backward position with a defined penetration stroke during which the master screw (4) is no longer returned towards the exterior of the casing (2).
B23B 31/08 - Chucks holding tools or work yieldably
B23G 3/00 - Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle
Tapping device (1) comprising a workpiece support (4) for the workpiece that is to be tapped, running substantially in a horizontal plane in transverse (I-I) and longitudinal (II- II) directions, and comprising a moving head support (5) substantially parallel to the workpiece support (4) for the workpiece that is to be tapped, movable at least in terms of translation in a vertical direction (III-III) with respect to the workpiece support (4) for the workpiece that is to be tapped between a proximal tapping position and a distal clear position. Deformable articulated parallelogram means (7) allow the moving head support (5) to be moved rapidly between its proximal tapping position and its distal clear position.
B23G 3/00 - Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle
Tapping unit (1) comprising protection means (12) for permitting an axial retraction movement of a master screw (4) towards the interior of a casing (2) from a reference position into a first proximal backward position with a first defined penetration stroke during which first elastic return means (13) constantly return the master screw (4) to its reference position. The protection means (12) furthermore permit an additional axial retraction movement of the master screw (4) towards the interior of the casing (2) from the proximal backward position into a second proximal backward position with a defined penetration stroke during which the master screw (4) is no longer returned towards the exterior of the casing (2).
B23B 31/08 - Chucks holding tools or work yieldably
B23G 3/00 - Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle
In an integrated cutting and tapping tool, a part in the form of a strip (6) is held on a strip support (4) with a hole (7) facing a tap (14) carried by a tapping tool (11). The bottom dead center point of the tap (14) is detected by a feeler (15) associated with a multiplier lever (19) pivoting about a transverse shaft (22) and pulling on a transmission cable (17) whose free end is detected by position detection means (18). In this way the position detection (18) means may be moved out of the tool platen (1), so that the plunger (23) and the multiplier lever (19) constitute an assembly that is easy to integrate under the tapping area. The machining of defective tappings is detected in this way.
B23G 1/44 - Equipment or accessories specially designed for machines or devices for thread cutting
B23Q 17/22 - Arrangements for indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
H01H 3/16 - Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
H01H 3/36 - Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord
H01H 3/46 - Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
Machines and machine tools; excluding casting machines;
motors and engines (other than for land vehicles);
transmission couplings and belts (other than for land
vehicles); agricultural implements; incubators for eggs.
