SU632458A1 - Die block - Google Patents

Description

The invention relates to the field of metal forming and can be applied in instrument making, as well as in other industries that specialize in the manufacture of parts such as threaded punch nuts. A die block is known, containing upper and lower plates with guides and bushings and columns fixed to them, as well as tool shafts fitted with a drive 1. However, an instrument mounted on a known die block has the possibility of limited action due to the kinematics of the drive elements which limits the technological capabilities of the die block. The purpose of the invention is to provide the possibility of performing several operations on processing a part in the proposed die block. For this purpose, the shafts are mounted on spring-loaded pods, and the drive of each shaft is made in the form of a horizontally positioned rail and teeth on adjacent lateral surfaces and vertically arranged rail mounted on a guide sleeve, connected with each other by a gear unit, while gear shaft with gearing. FIG. 1 shows a section (longitudinal or transverse) of the proposed die block; in fig. 2 - section A-.A. FIG. one; in fig. 3 is a section BB of FIG. 1. The die unit consists of plates 1 and 2, the columns of which are mounted on columns 3 and sleeves 4, as well as brackets 5 having vrashayuschie axis b with rigidly mounted gears 7 and 8. Gears 8 are in engagement with vertical rails 9. installed on opposite plates. With gears 7, horizontal combination rails 10 are in engagement, which are simultaneously engaged with additional gears 11. To save die space and reduce the deflection of the vertical rail 9, due to the interaction with gear 8, the gear rail 9 is fixed on The hub 4. The gear 11 may be integrated together with the wagon 12. However, axial transmission of such gear relative to the horizon of the rail 10 will contribute to premature wear of the teeth. In this connection, the gear 11 is mounted on the splines of the shaft 12, which allows the shaft to move freely in the axial direction.

A special feature of the rail 10 is the presence of teeth on several adjacent surfaces, which allows the rotational movement of several vertical shafts 12 to be reported simultaneously. The ororic parts of the shaft 12 are installed in the crown 13, which is also used to guide the combined rail 10. The shaft 12 is through one end through one end the bearing 14 is mounted on the bolster 15, pressed by the spring 16, the force of which is regulated by the threaded plug 17 (see Fig. 1). On the shafts 12 are attached corresponding actuating tools, for example cutting tools (not shown). Punch block works as follows. Plates 1 and 2 are attached to the slide and the press table, respectively. When the slide is moved up or down, gears 7 and 8 rotate, and rails 10 move progressively, driving gears 11 together with shafts 12. Gears 7, 8 and 11, as well as shaft 12 mounted on moving plate 1, along with rotational movement is moved progressively by the amount of movement of the press ram. Similar parts mounted on the plate 2, make only a rotational motion, and the shaft 12 can move progressively only by the stroke of the subframe 15. When moving nolz. P. on the upward press, the valg 12 with the tools will rotate in the opposite direction. Due to the fact that the vertical shafts can move axially relative to the base plates, it is possible to process the workpiece during the press ram up and down, and also to reduce the dynamic loads on the tool at the moment of its contact with the workpiece. The proposed die block can be used to align the threading in the sheet parts with other cold forming transitions; The condition of this process is the equality of the times of the progressive movement of the slide on the step size of the thread being cut and one turn of the cutting tool Tp:

Tr Tr (1)

The values of Tn and Tp are determined by the following expressions:

301

(I) -5,

60

Claims (1)

(III) where - cutting thread, mm; n is the number of moves of the ram, min; S - stroke of the press ram, mm; F - the number of revolutions of the tap, .min. Equating the right-hand sides of expressions (P) and (III) in accordance with condition (I) and solving the resulting equation for, we find q, 2JlL. (IV) Relationship (IV) establishes a quantitative relationship between the parameters of the thread and the kinematic parameters of the press and allows Do not determine the required gear ratio. Thus, the proposed die block has increased technological capabilities and allows for several processing operations on the part. Claims of the Invention A die block comprising upper and lower plates with guide bushes and columns fixed on them, and ii and 4} J (UUl / l / l Ji VllLl-Lt iliriILIVVJUlkyilll.l iriri.t4 the same tool shafts for the tool, characterized in that, in order to enable several parts processing operations, the shafts are mounted on spring-loaded plate holders, and the drive of each shaft is made in the form of a horizontally positioned rail with teeth on adjacent lateral surfaces and vertically positioned on the rail Auxiliary bushing, interconnected by a gear unit, wherein the horizontal rail is connected to the shaft by means of a gear. Sources of information taken into account in the examination: 1Mescherin VG Listova punching. Atlas. M. Mashgiz, 1958, s 123, Fig. 488. / 4- / J per vert tj-6 turned