SU1433648A2 - Portable drilling machine - Google Patents

Abstract

This invention relates to mechanical engineering, in particular to portable drilling machines. The aim of the invention is to increase the reliability of the machine when machining with a combined tool due to the supply of the combined tool with separate drives in the absence of throttle control. From drive 8, through gear 7, the gear pump and the piston-spindle 10 of the machine are driven into rotation. The pressure created by the pump provides axial movement of the piston 9 and the piston-spindle 1 O with the drill 19 after the end of drilling, i.e. stopping the piston 9 into the body of the machine, the feed force is reduced due to the smaller area of the piston 10, providing high-quality thread tapping 20. 1 sludge.

Description

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The invention relates to machine building, in particular to portable measuring machines, and is a solution to the invention according to IT. No. 772745.

: The purpose of the invention is to superimpose the malzina's helix when machining with a combined tool at the expense of

Combined feed

tool separate drives in the absence of throttle control.

I The drawing is a schematic representation of a punching drilling machine.

I The portable drilling machine includes a casing with a gear pump, formed by gears 2 and 3, an overflow valve, including a shut-off member 4, a spring 5 and a adjusting screw 65 drive shaft 7 connected to the drive 8j additional the piston 9, the piston-spindle lb, which is movably connected to the shaft 7 by means of splines and semi-ufta 11.

 Three suction cups 12 are mounted on the bollards 13 using spherical hinges. Piston spindle 10 and | The additional piston 9 forms a telescopic power cylinder, A of which is connected by channels in housing 1 to the inlet valve, the environment and one of the pump cavities, and cavity B is connected to cavity C under suction cups of the blended valve and the other - pump.

 The instrumental shop contains krpus 14, which is mounted on one of the support pillars 13, and sends a torsion piston 15. In the housing 14, cylindrical sockets for the tool are removed and clamps are installed in the locking stopper 16 and prulsine 17. The special-purpose tool contains a guide head 18 of a cylindrical form 1 and a working tail | with a sequentially placed drill bit 19 and a tap 20, passing to the thread. 18 bbinoj je on the half coupling half 21 j radial

o hole 22 and annular grooves under

the stopper 16. One tool keeping the eTCH along the axis of the piston 10 by the stop 235 to which it is pressed by the spring 15

The portable drill machine works slammingly.

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Claims (1)

Before starting work, the tools are placed in the slots of the magazine body 14. The feed force corresponding to the drill diameter 19 and the strength of the material being processed is set by an adjusting screw 6. Then the drilling machine, for example j manipulator (shown), feeds and presses suckers 12 to the workpiece, drives the drive 8, which through shaft 7 leads during rotation, the gear pump and the piston-spindle 10. A gear pump, by pumping water through an overflow valve, creates a reduced pressure in cavity B and B, ensuring that the drilling machine is fixed by suction cups 12 and axial pressure The piston 9 and piston-pindel 10, which in the process of moving by coupling half 11 engages with coupling 21, pulls the tool off the stopper 16 and then provides the drilling process with a predetermined feed force, determined by the setting of the overflow valve and piston surface area - spindle 10 and piston 9. The stroke of piston 9 is chosen such that when the tap 20 approaches the workpiece, it becomes abutment in housing 1 and the feed force is reduced to a value that can be determined. adjusting the overflow valve and the piston area of the spindle 10, which ensures high-quality thread cutting. When threading all the way up, the actuator 8 stops, manipulates -. The torus removes the drilling machine from the part being processed and the drive 8 is reversed. The direction of fluid flow from the pump is reversed and due to the resistance in the channels connecting 1 {x pump with suction cups 12, a backpressure occurs in cavity B, which moves the piston 9 and the piston-spindle 10 to its original position, and the housing 14 of the tool magazine is rotated by the action of the spring 15 until the following tool contacts the stop 23. The formula of the invention Portable drilling machine according to aut., Sv. No. 772745, characterized by the fact that, in order to increase the reliability when processing with combined tools, with a tool, the machine is equipped with an additional piston, in which the pc1start is made, for installation with a sperm assembly.