SU1328090A1 - Device for working holes - Google Patents

Abstract

The invention relates to metal working, in particular, to machining of holes by cutting and plastic deformation. The purpose of the invention is the expansion of technological capabilities by providing a combination of hole machining. The device contains coaxially positioned countersink 1 (L o th 00 o co

Description

and a finishing tool in the form of a piercing, comprising a hollow body 2, on which the deforming teeth 3 are installed, a centering mechanism, which is spring-loaded prisms 9 and 10. The latter are installed with the possibility of movement relative to the reference point 13 and 13. interact with answer1

The invention relates to metal working, in particular, to machining of holes by cutting and plastic deformation.

The aim of the invention is the expansion of technological capabilities by providing a combination of hole machining.

Figure 1 presents the proposed device, a longitudinal section; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 2; figure 4 is a section bb In figure 1; on fig.Z - type G figure 1; Fig. 6 is a kinematic diagram of a countersink rotating mechanism; 7 - the device according to the second embodiment, a longitudinal section; , on Fig - section dD in 7; figure 9 - section EE of figure 7; Fig. 10 shows a variant of connecting a countersinker and firmware.

The device contains coaxially positioned countersink 1 (the second tool) and a finishing tool in the form of a firmware comprising Poland housing 2, on which teeth in the form of carbide, rings, spacer rings 4 between them and the holder 5 are mounted. The parts listed are aliased by nut 6. The device is additionally equipped with a centering mechanism interconnected with the front guide 7 of the firmware, made in the form of a normal tool axis arranged in a plane, spring-loaded by springs 8 of prisms 9 and 10. Adjusted by contacting protrusions 11 and valleys 12, obtained on the base plate 13, mounted on the base 14. Prisms 9 and 10 are mounted with the ability to move, by side side surfaces 16, of the strips 17 and 18, parallel to the tool axis, rigidly connected to the mechanism translational movement of the carriage 19. Zenker 1 is installed with the possibility of rotation relative to the firmware. The invention also provides a second embodiment of the centering mechanism. 3 hp f-ly10 il.

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relative to the base plate 13. On the same prisms, side surfaces 15 are obtained with which the counter side surfaces 16 of the strips 17 and 18 interact, parallel to the tool axis and rigidly connected to the carriage 19 connected to the translational mechanism. This connection can be made, for example , by means of the nut 20. The side surfaces 16 are located on the strips 17 and 1B on the surface opposite to the firmware. In the carriage 19, the chuck 22 is mounted and fixed by means of its collar and nut 21. Through the firmware and chuck 22, the rod 23 is connected with the countersink 1 with the possibility of transferring rotation to it from the gear wheel 24, which is primed. water rotation of the second tool (countersink). A gear wheel 24 is mounted at the upper end of the chuck 22 rotatably with respect to it and connected to it by means of balls 25 inserted into annular grooves facing each other, made respectively on the cartridge 22 and the gear wheel 24. Balls 25 are inserted into the ring grooves through hole gear 24 (not shown). The rotation drive of the countersink 1 includes, in addition to the gear wheel 24, a gear wheel 26 kinematically connected with it, pulleys 27 and 28 with an electric motor 29 mounted on a plate 30 perpendicular to the carriage 19, and rigidly connected with it. For greater stability, the carriage 19 is directed by protrusions 31 of the dovetail type, interacting with the response spins of the vertical directions 32. The countersink 1 is fixed on the protrusion 33 of the piercing (end of the front guide 7) located in front of the supporting surface. Between the inner end surface of the countersink 1 and the end of the protrusion 33, a thrust bearing 34 is installed. On the rod 23, in order to reduce friction, an embossing is made and the contact surfaces are left in the form of two cylindrical sections 35 and 36, for sensing and transmitting torque it is provided with squares 37 and 38, and for keeping it from falling out and pressing the countersink 1 to the thrust bearing 34, nuts 39 are provided. Thus, countersink 1 is installed rotatably with respect to the firmware. A groove 40 is made on the firmware housing 2, consisting of a section parallel to the axis and a section in the form of an annular groove incompletely around the circumference. The latter is formed in the direction opposite to the direction of rotation of the countersink 1. With the groove 40, the protrusion 41 interacts in the form of a screw with a cylindrical end screwed into the cartridge 22. Each of their prisms 9 and 10 is connected with a pin 43 that is passed through the partition 42 the nut 44 which is screwed up is adjusted, while the spring 8 is placed between the prism and the partition 42. The movement mechanism is rigidly connected with the carriage Through the tappets (not shown).

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nor their positions, for which they have longitudinal grooves, through which the fastening screws are passed (not shown).

The presented two variants of the centering mechanism can be used regardless of the device features.

For machining openings of relatively small diameter, the cartridge 45 in the carriage 46 is rotatably mounted, for which between its shoulder and the carriage 46, as well as between the latter and the gear wheel .47 rigidly mounted on the same cartridge 45, thrust bearings 48 and 49. The gear 47 is fastened by means of nuts 50 and a key 51. Firmware 52 is made integral, with a front guide surface 53, a countersink 54 is rigidly fixed on it. In order to increase the speed of the firmware 52, it is connected to the throne 45 through the groove 40 and the protrusion 41 (Fig.7), i.e. as shown in Figs. 1 and 5. Zenker 54 can be connected to firmware 52 also by means of a thread (Fig. 10) or can be made integral with it (Fig. 7). A means for centering it interacts with the guiding surface 53, made in the form of two normally (perpendicular) located to the axis of the firmware 52 spring-loaded springs 55 of prisms 56 and 57, on which side surfaces 58 are obtained, which are designed to interact with counter side surfaces mi 59 strips 60 and 61. Unlike the version of the centering mechanism

(Figures 1 and 2) the side surfaces 59 of the strips 60 and 61 are located on the side of the firmware 52, and the springs 55 are installed between the prisms in their openings,

however, the movement of the prisms is limited by screws 62. Slats 60 and 61 are mounted in the carriage 46 with the possibility of adjusting their distance between them, for this purpose, for example, each

of the planks is connected by means of a thread with a screw 63 mounted without axial movement, an annular groove is formed on it to interact with the end of the screw 64. The latter also serves to rigidly fix the screw 63. The bars 60 and 61 are placed in guides, lining 65, along the ends of which are fixed sidewalls 66 and 67. Base plates 13 also

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nor their positions, for which they have longitudinal grooves, through which the fastening screws are passed (not shown).

The presented two variants of the centering mechanism can be used regardless of the device features.

When the Zen-Qer 69 is fastened in the firmware 68 by means of a thread, a threaded hole is made in it, and a cylindrical hole on its extension to center the protrusion 70.

The device for processing conditions 45 on the press (figure 1) works as follows.

Item 71 is fixed on the press table. The movement mechanism of the press is activated and the rotation of the electric motor 29 is turned on. The movement mechanism acts by pushers on the carriage 19, moving it together with the electric motor 29 at a speed equal to the minute feed during countersinking. The rotation through the system of pulleys and gears is transmitted to the rod 23, and through the latter to the countersink 1; which treats the surface of the hole,

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chips down, at this time prisms 9 and 10 center the firmware on its guide surface 7, creating a stable position of countersink 1. After finishing countersink strips of strips 17 and 18, prisms 9 and 10 are separated, affecting their side surfaces 15 with their surfaces 16 In this case, the springs 8 are further compressed. Stop rotation of the countersink 1 by turning off the electric motor 29. Then the movement mechanism reports a higher speed characteristic of the operation of the firmware, processing

ten

made of high-speed steel and within 25 ... 80 m / min, if it is equipped with a hard alloy. The speed of moving the firmware is selected taking into account the possibility of equipment and is within 0, 5 ... 10 m / min.

Claims (4)

1. A device for machining holes, comprising a support plate, a carriage connected to the moving mechanism and two tools, one of which is a flashing from the front The last surface of the hole is a detail that guides and deforms the teeth — whether. Then, the press moving mechanism together with the combination tool is returned to the initial polo. living Prisms 9 and 10 also return to their original positions and center the firmware. The part is fixed and the processing cycle is repeated. The operation of the device shown in Fig.7, similar to that described, except for the following points. Before retraction, when moving the slider, prisms 56 and 57 are reduced by strips 60 and 61 by the action of their side surfaces 59 on the side surfaces 58 of the prisms. As a consequence, the piercer 52 is firmly centered along the guide surface 53. After countersinking the prisms, by transferring them from the side surfaces 59 to the unhooting of the strips 60 and 61, are parted by springs 55. During the countersink process, firmware 52 together with countersink 54 rotates, and after countersinking, the rotation is stopped. After machining the hole, the combined tool can be detached, for example, in order to more thoroughly clean the teeth of the cutting firmware 52 from chips. To do this, it is rotated to the exit stop 41 on the portion of the groove 40, parallel to the axis, and served down. The device operates under the following operating modes. The feed per revolution of the zenker is selected in the range of 0.15 ... 0.5 mm / rev, - and the cutting speed - in the range of 15 ... 50 m / μn, if the countersink MI, characterized in that, in order to expand technological capabilities, the device is equipped with a cartridge installed in the carriage, 20 by means of a rotational drive of the tool, including a gear, and a centering mechanism installed with the possibility of interaction with the front guide of the firmware and made in 25 in the form of a tool located in the plane of the normal axis with the possibility of movement relative to the base plate of spring-loaded prisms and rigidly connected with the carriage The 30 surfaces of which are designed to interact with the side surfaces of the prisms, while the second tool is a countersink that is mounted on the end of the front 35 guide. 2. The device according to claim 1, characterized in that the gear wheel is mounted with the possibility of interaction of rotation relative to the cartridge 40, which is rigidly fixed in the carriage, while the countersink is installed with the possibility of rotation relative to the firmware. 3. The device according to item 1, about tl and h a- 45 th Ech with the fact that the gear wheel rigidly mounted on the cartridge, and the countersink is rigidly connected with the firmware. 4. A device according to Claim 1, characterized in that the slats are installed with the possibility of adjusting the distance between them. made of high-speed steel and within 25 ... 80 m / min, if it is equipped with a hard alloy. The speed of moving the firmware is selected taking into account the possibility of equipment and is within 0, 5 ... 10 m / min. Invention Formula 1. A device for machining holes, comprising a support plate, a carriage connected to the moving mechanism and two tools, one of which is a flashing from the front guiding and deforming teeth and, characterized in that, in order to expand technological capabilities, the device is provided with a cartridge installed in the carriage, a rotational drive of the tool including a gear wheel, and a centering mechanism installed with the possibility of interaction with the forward guide of the firmware and made in the form of a tool located in the plane of the normal axis with the possibility of movement relative to the base plate of spring-loaded prisms and rigidly connected with the carriage slats, lateral the surfaces of which are designed to interact with the side surfaces of the prisms, while the second tool is a countersink that is mounted on the front face guide. 2. A device according to claim 1, characterized in that the gear wheel is mounted with the possibility of interaction of rotation relative to the cartridge, which is rigidly fixed in the carriage, while the countersink is installed with the possibility of rotation relative to the firmware. 3. The device according to claim 1, about tl and h a-y sh e with the fact that the gear wheel rigidly mounted on the cartridge, and the countersink is rigidly connected with the firmware. 4. Device according to Claim 1, characterized in that the slats are installed with the possibility of adjusting the distance between them. A-l YU 5-6 phag.z -one g t yy from (Pi / GB 1 81 Fig.8 - FIG. 9 70 Srig. ten