CN2548735Y

CN2548735Y - Drive mechanism of rotary die

Info

Publication number: CN2548735Y
Application number: CN 02219789
Authority: CN
Inventors: 王爱民; 艾炜
Original assignee: Jiangsu Jinfangyuan CNC Machine Co Ltd
Current assignee: Jiangsu Jinfangyuan CNC Machine Co Ltd
Priority date: 2002-04-08
Filing date: 2002-04-08
Publication date: 2003-05-07
Anticipated expiration: 2012-04-08

Abstract

The utility model belongs to a mechanical processing device which relates to a rotatory-mould driving mechanism used on a numerical control turret punch press. An upper die and a lower die of the device are driven by a pair of worm wheel-and-worm mechanisms whose output shafts are all sleeved with sliding sleeves that are connected by sliding bonds. A braking mechanism is provided between the lower die and the sliding sleeve therebelow, which consists of a braking ring. The outside wall of the lower end of the braking ring is a cone while a compression spring is arranged between the upper end face and a matrix of the lower die. The bottom inner wall of a fixed mould base intracavity is a cone that coordinates with the braking ring. Also, a convex ejector block is arranged on the upper end face of the sliding sleeve below the lower die while a braking mechanism with the similar structure is also arranged between the upper die and the sliding sleeve thereabove. The utility model is high in transmission precision, convenient and reliable for operation and adjustment as well as beneficial to production efficiency improvement and use cost reduction.

Description

The rotary die driving mechanism

The utility model belongs to machining equipment, relates to a kind of rotary die driving mechanism that uses on NC turret punch machine.

Use rotary die on the NC turret punch machine, not only can enlarge the processing technology scope of mould, and can save the lead-time, enhance productivity.But existing rotary die transmission accuracy is relatively poor, and upper and lower mould inconsistent phenomenon often takes place, and mould is washed out, and not only cost of idleness, and the adjustment that often needs repairing has limited the raising of production efficiency.

Technical problem to be solved in the utility model is, a kind of transmission accuracy height is provided, operation, easy to adjust reliable, the rotary die driving mechanism, make it help enhancing productivity, reduce use cost.

Rotary die driving mechanism of the present utility model comprises a pair of upper die and lower die, also comprise a pair of worm-and-wheel gear that is used for driving upper die and lower die respectively, all be with the sliding sleeve that connects by slide key on the output shaft of described worm-and-wheel gear, make the sliding sleeve can upper and lower slip on output shaft, and can rotate with output shaft; A braking mechanism is arranged between counterdie and the sliding sleeve below it, described braking mechanism comprises a brake ring that is enclosed within the counterdie lower end, the outer wall of brake ring lower end is a conical surface, between brake ring upper surface and the counterdie matrix compression spring is installed, and whole counterdie is arranged in a fixedly inner chamber of die holder, fixedly the bottom interior wall of die holder inner chamber is a conical surface that matches with brake ring, the pressure of above-mentioned compression spring with brake ring to pressing down, make the conical surface of brake ring outer wall and fixedly the conical surface of die holder inwall fit, simultaneously, edge, sliding sleeve upper surface below counterdie is equipped with the jacking block of a projection with the corresponding position of brake ring; And between the sliding sleeve of patrix above, a braking mechanism identical with said structure is arranged also with it.In addition, for further improving transmission accuracy, the worm gear of described worm-and-wheel gear adopts split type structure, that is, its worm gear is first half and latter half of two parts by horizontal subdivision, has a vertical adjustment hole at the worm-wheel shaft edge, the adjustment hole front end has run through the matrix of worm gear, be installed with one and adjust pivot pin in adjustment hole, the part that adjustment pivot pin front end stretches into the worm gear first half is one section eccentric shaft, adjusts pivot pin by rotation and just can regulate worm gear first half and latter half of relative rotation.

The utility model is owing to adopting owing to adopted the braking mechanism of upper and lower mould, and the action of sending away driving mechanism is sensitive more, has improved transmission accuracy; And the worm gear arrangement of dissection type can be eliminated the inter-lobe clearance of worm and gear effectively, has also further improved transmission accuracy.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of this braking mechanism;

Fig. 3 is the structural representation of dissection type worm gear.

As shown in Figure 1, the rotary die driving mechanism comprises a pair of patrix 1 and counterdie 2, also comprise a pair of worm-and-wheel gear 3 that is used for driving upper die and lower die respectively, worm-and-wheel gear can be driven by a pair of timing belt 5 that a servomotor 4 drives, be with the sliding sleeve 7 that connects by slide key on the output shaft 6 of worm-and-wheel gear, sliding sleeve can rotate with output shaft 6, and can stir sliding sleeve 7 upper and lower slip (as shown in Figure 3) on output shaft by a dead man 19.A braking mechanism 8 is arranged between counterdie 2 and the sliding sleeve below it 7, as shown in Figure 2, braking mechanism comprises a brake ring 9 that is enclosed within counterdie 2 lower ends, the outer wall of brake ring lower end is a conical surface, compression spring 10 is installed between brake ring upper surface and the counterdie matrix, and whole counterdie 2 is arranged in a fixedly inner chamber of die holder 11, fixedly the bottom interior wall of die holder 11 inner chambers is a conical surface 12 that matches with brake ring 9, the compression spring pressure can make the conical surface of brake ring 9 outer walls and fixedly the conical surface of die holder 11 inwalls closely cooperate, reach the purpose of brake; Simultaneously, the edge, sliding sleeve 7 upper surface below counterdie is equipped with the jacking block 13 of a projection with brake ring 9 corresponding positions, when sliding sleeve 7 upwards slides, jacking block 13 can back down brake ring 9, removes brake, sliding sleeve 7 can be cooperated by key give counterdie 2 with power and transmission of torque.Between the sliding sleeve 7 of patrix 1 above, a braking mechanism identical with said structure 8 is arranged also with it.

As shown in Figure 3, worm gear in the worm-and-wheel gear adopts split type structure, its worm gear is first half 14 and latter half of 15 two parts by horizontal subdivision, have a vertical adjustment hole 16 at the worm-wheel shaft edge, the adjustment hole front end has run through worm gear first half and latter half of matrix, in adjustment hole, be installed with one and adjust pivot pin 17, the part that adjustment pivot pin front end stretches into worm gear first half 14 is one section eccentric shaft 18, adjust pivot pin 17 by rotation and just can regulate worm gear first half and latter half of relative rotation, to reach the purpose of eliminating the worm and gear inter-lobe clearance.

Claims

1, a kind of rotary die driving mechanism, comprise a pair of upper die and lower die, it is characterized in that: further comprising a pair of worm-and-wheel gear (3) that is used for driving patrix (1) and counterdie (2) respectively, all be with the sliding sleeve (7) that connects by slide key on the output shaft of described worm-and-wheel gear (6); Between the sliding sleeve (7) of counterdie (2) and its below, a braking mechanism (8) is arranged, described braking mechanism comprises a brake ring (9) that is enclosed within counterdie (2) lower end, the outer wall of brake ring lower end is a conical surface, compression spring (10) is installed between brake ring (9) upper surface and counterdie (2) matrix, and whole counterdie (2) is arranged in a fixedly inner chamber of die holder (11), fixedly the bottom interior wall of die holder inner chamber is a conical surface that matches with brake ring (12), the edge, upper surface of the sliding sleeve below counterdie (7) is equipped with the jacking block (13) of a projection with the corresponding position of brake ring (9); Patrix (1) with its top sliding sleeve (7) between a braking mechanism identical with said structure (8) is also arranged.

2, rotary die driving mechanism according to claim 1, it is characterized in that: the worm gear in the described worm-and-wheel gear (3) is a split type structure, promptly, its worm gear is first half (14) and latter half of (15) two parts by horizontal subdivision, have a vertical adjustment hole (16) at the worm-wheel shaft edge, the adjustment hole front end has run through the matrix of worm gear, is installed with one and adjusts pivot pin (17) in adjustment hole, and the part that adjustment pivot pin front end stretches into worm gear first half (14) is one section eccentric shaft (18).