SU1423277A1 - Semi-automatic line for scraping bright castings - Google Patents

Abstract

The invention is adapted to mechanical engineering and can be used for finishing castings. The purpose of the invention is to expand technological capabilities and increase productivity. The line consists of a mechanism 1 for moving castings, working positions, each of which consists of a base 2, a fixed crosshead 3, a clamping element 4 and pillars 5. A clamp 9 is fixed on the rod 8 of the cylinder 7. On the carriage 11 there are rigidly fixed tool heads housing 12, earrings 15, carrying broach 17 and in contact with the rod 14, Earring 15 is installed with the possibility of swing on the axis 16. 1 CW f-ly, 5 ill. C 9

Description

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The invention relates to machine-building, in particular to machine tool construction, can be used in dynamic production for stripping waste from various configurations. I The aim of the invention is to expand the technological possibilities ji increase productivity.

Fig. 1 shows the Proposed Yuluautomatic line for stripping castings, general VIEW; In FIG. 2, eep 1 in FIG. 1, (working position of the 1st INII, general view); Fig, 3 - scheme

 n Py (fig, 4) composition

The burr of the burr of the casting with the teeth of the protruding cutting forces P and pC is directed in opposite directions. Reactions P,

five

ten

case 12 with earring 15, hydraulic cylinder 13 and drawing 17 are lowered. Tides and burrs are removed smoothly, by drawing in one stroke of drawing 17, the full removable allowance e (FIG. 3) is added from allowances in each the tooth of the stretch 17, the first tooth of the stretch 17 with the downward movement of the chipping or cutting of the tip to the enlarged burrs, leaving an allowance B for cutting the remainder of the stretch teeth 17, Reactions P, and

zhki; FIG. 4 is the same when machining; Fig. 5 shows the layout of the tool relative to the casting.

The semi-automatic line for stripping castings consists of a mechanism

the movement of the castings, the working positions, each of which consists of a base 2, a fixed beam 3,

Hydraulic cylinders 6 and 7 are fixed to the fixed cross member 3 on the fixed element 4, guide pillars 5. Hydraulic cylinders 7 are fixed to the flow 8 of the hydraulic cylinder 7, Hydraulic cylinder 6 is connected with its flow 10 to the driving carriage 11. The tool heads are rigidly fixed to the driving carriage 11 - the number of tool heads is determined by the casting contour); Each tool head consists of iKopnyca 12, in which the hydraulic HYDROCY is located. The SPINDER 13 with the rod 14 (having the possibility of a constant contact with the link 15, The earring 15 is fixed; in case 12 on swivel axes 16. The cutting tool is mounted on the earring 15.

20

25

thirty

35

40

6 pushes the teeth away from the processed surface of the casting. Its value is at unchanged D, where D is the width of the broach 17 (Fig, 5 depends on the cutting length A (A is the cutting length on the widest part of the burr, t, e, on the total length of the cutting edges of the teeth simultaneously (a; c; d) running 17,

In order to ensure a smooth penetration into the material being processed, in order to achieve a more uniform cutting force during the process of pulling and to prevent burrs between the teeth of the broach 17, the cutting edge of the broach 17 is made at an angle O (Fig. 5). The angle с must ensure such a condition that parts of several teeth are at once in the cutting process.

The force developed by hydro-sync 13 ensures the force balance of the system of hydraulic cylinder 13 — rod 14 — broach 17. With increasing length from for A, for example, C (C is the cutting length of the casting body), the reaction P |. equilibrium When the force 17 of the machine (reg-ri) is exceeded by the force developed by the hydraulic cylinder 13, the equilibrium of the system is disturbed, and the stretch 17 on the lug 15 rotates about the axis 16 clockwise, turns on the rod 14 and, overcoming yci-um hydraulic cylinder 13 is deflected. The processing stops. The drive carriage 11 returns to its original position. Then, the casting from the first working position by the movement mechanism 1 is fed to the second working position, the casting is laid on the base element 4, The burrs and tides are removed from the next

The semi-automatic line for stripping castings works as follows.

The casting by the movement mechanism 1 is transferred to the first working position, where it is placed on the base element 4. When fed into the hydraulic cylinder

7 Working fluid lowers stock

8, by clamping 9, clamping the casting, B, hydraulic cylinder 13 is supplied with working fluid under a certain pressure Pu (Fig. 4), which corresponds to the pressing force of a broach when cutting a burr at the site of size A (Fig. 3). Then, when the working fluid is supplied to HYDROCYL1ODR 6, the rod 10 lowers the drive carriage 11, respectively

 n Py (fig, 4) composition

case 12 with earring 15, hydraulic cylinder 13 and drawing 17 are lowered. Tides and burrs are removed smoothly, by drawing in one stroke of drawing 17, the full removable allowance e (FIG. 3) is made up of allowances in each tooth removed 17, the first tooth of the broach 17, with a downward stroke, cleaves or cuts the tip to the enlarged burrs, leaving a seam allowance B for cutting the remaining 17

5 cutting forces P and pC are directed in opposite directions. Reactions P,

0

five

0

five

0

five

0

five

6 repels the teeth against the surface of the casting. Its value at constant D, where D is the width of the broach 17 (FIG. 5), depends on the cutting length A (A is the cutting length on the widest region of the burr, t, e, on the total length of the simultaneously cutting edges of the teeth (a; c ; d) running out 17,

In order to ensure a smooth penetration into the material being processed, in order to achieve a more uniform cutting force during the process of pulling and to prevent burrs between the teeth of the broach 17, the cutting edge of the broach 17 is made at an angle O (Fig. 5). The angle с must ensure such a condition that the cutting of several teeth at a time is consistently located.

The force developed by the hydraulic unit 13 ensures the force balance of the system of the hydraulic cylinder 13 — the rod 14 — the broach 17, With an increase in the cut-off length from A, for example, to C (C is the cutting length of the casting body), the reaction P |. . When the force developed by the hydraulic cylinder 13 is exceeded by the pressing force of the stretcher 17 (the rider), the balance of the system is disturbed and the span 17 on the lug 15 rotates about the axis 16 clockwise and turns onto the rod 14 and, overcoming the hydraulic cylinder yci-ume 13, is rejected. Processing is terminated. The drive carriage 11 returns to its original position. Then, the casting from the first working position by the movement mechanism 1 is fed to the second working position, the casting is laid on the base element 4, The burrs and tides are removed from the next

casting site. And the next casting is applied to the first working position. Duty cycle repeats.

The use of the proposed semi-automatic line allows to increase productivity and improve working conditions, as well as to expand the technological capabilities of existing lines to clean up waste.

Claims (1)

1. Semi-automatic line for stripping castings, containing a mechanism for moving castings, work positions, each of which consists of a base with struts on which a fixed traverse is placed and (rig 5 A drive carriage, designed with power hydraulic cylinders, characterized in that, in order to expand technological capabilities and improve productivity, each working position is additionally equipped with tool heads placed on a driving carriage and made in the form of a housing with axles on which earrings are installed, on the free ends of which they are fastened; they are drawn with teeth, and the power cylinder rod is connected with an earring, 2, Line pop, 1, differs from the fact that the teeth are made inclined relative to the horizontal plane. sriel ffffffluS fa 3aycfffet4 / fu / rret / f / trft / (/ e.S f ufe / e