摘要:
In a roving winding apparatus applied to a roving frame provided with a plurality of draft parts (7) and corresponding bobbin wheels (21), a bobbin shaft (23) for driving the bobbin wheel (21), a bobbin rail (20) whereon the bobbin shaft (23) is rotatably mounted horizontally along the longitudinal direction thereof, a lifting motion mechanism (56-59) for lifting the bobbin rail (20), and a main motor (1) for driving the draft parts (7) at a predetermined rotation speed, wherein the bobbin shaft (23) is driven under a controlled condition created by a servomotor (SM) to follow a digital signal output from the rotation angle detecting device (PG) applied to the common bottom front roller (8) of the draft parts (7), in an adjusted optimal condition under the control of a computer system (100), incorporated with the lifting motion of the bobbin rail (20).
摘要:
In a roving winding apparatus applied to a roving frame provided with a plurality of draft parts (7) and corresponding bobbin wheels (21), a bobbin shaft (23) for driving the bobbin wheel (21), a bobbin rail (20) whereon the bobbin shaft (23) is rotatably mounted horizontally along the longitudinal direction thereof, a lifting motion mechanism (56-59) for lifting the bobbin rail (20), and a main motor (1) for driving the draft parts (7) at a predetermined rotation speed, wherein the bobbin shaft (23) is driven under a controlled condition created by a servomotor (SM) to follow a digital signal output from the rotation angle detecting device (PG) applied to the common bottom front roller (8) of the draft parts (7), in an adjusted optimal condition under the control of a computer system (100), incorporated with the lifting motion of the bobbin rail (20).
摘要:
A toolholder device (7) for a machine tool comprises a holder body (2) driven by a machine tool drive spindle (1), and a toolholder (6) supported on the holder body (2) so as to be circumferentially and axially displaceable. The holder body (2) and the toolholder (6) are provided with displacement detection elements (24 and 21) which are arranged circumferentially in interdigitating relation. A support shaft (3) extends from either member of the holder body (2) and the toolholder (6) toward the other member. The outer surface of the support shaft (3) and the inner surface of a support hole (11a) of the other member to be fitted over the support shaft (3) are formed with helical guide grooves (12) which are opposite to each other and slopingly extends with respect to the rotational axis of the toolholder device (7). Balls (13) are interposed between the opposite guide grooves (12) to form a displacement translation mechanism (14) which converts a rearward axial displacement of a tool (4) and the toolholder (6) due to overload axial thrust into a circumferential relative displacement between the adjacent detection elements (24 and 21). The relative displacement of the detection elements is detected by a detection unit (40) which issues a warning signal. A compression spring (20) in the device resists the axial displacement of the toolholder (6) unless the axial thrust exceeds a predetermined value.
摘要:
A toolholder device (7) for a machine tool comprises a holder body (2) driven by a machine tool drive spindle (1), and a toolholder (6) supported on the holder body (2) so as to be circumferentially and axially displaceable. The holder body (2) and the toolholder (6) are provided with displacement detection elements (24 and 21) which are arranged circumferentially in interdigitating relation. A support shaft (3) extends from either member of the holder body (2) and the toolholder (6) toward the other member. The outer surface of the support shaft (3) and the inner surface of a support hole (11a) of the other member to be fitted over the support shaft (3) are formed with helical guide grooves (12) which are opposite to each other and slopingly extends with respect to the rotational axis of the toolholder device (7). Balls (13) are interposed between the opposite guide grooves (12) to form a displacement translation mechanism (14) which converts a rearward axial displacement of a tool (4) and the toolholder (6) due to overload axial thrust into a circumferential relative displacement between the adjacent detection elements (24 and 21). The relative displacement of the detection elements is detected by a detection unit (40) which issues a warning signal. A compression spring (20) in the device resists the axial displacement of the toolholder (6) unless the axial thrust exceeds a predetermined value.
摘要:
An apparatus for controlling a drive of each one of spinning frames forming a group, to which a conventional roving bobbin exchange operation for exchanging almost exhausted roving bobbins of the spinning frame with full packaged roving bobbins of a bobbin carrier on a supply rail arranged at a position close to and above the corresponding spinning frame by a known automatic apparatus mounted on a carrier which is capable of displacing along a track arranged on a floor of spinning factory along an alignment of out-end frames of said spinning frames, is applied, wherein during the spinning operation, a residual roving quantity of the roving bobbins of each spinning frame is measured, while detecting a quantity of yarn wound on cops in each spinning frame, and when the above-mentioned measurement of a residual quantity of roving bobbins reaches a predetermined value, a first signal indicating this condition is issued, while the quantity of yarn wound on the cops is measured to detect a suitable condition to start the above-mentioned roving bobbin exchange operation, and when this suitable condition is detected, a second signal indicating this condition is output, then a signal calling the automatic apparatus is output based upon the logical product of these two signals, and an allowable time for the arrival of the automatic apparatus at a working position close to a particular position close to the out-end frame of a spinning frame is set, and if the automatic apparatus for exchanging roving bobbins does not arrive at the above-mentioned working position within the allowable time, the drive of the spinning frame concerned is stopped by a means for controlling the drive of spinning frames which cooperates with the measurement of a residual quantity of a roving bobbin and measurement of a quantity of yarn wound on the cops.