CS242590B1 - Hydraulically actuated deep drilling head with wedge lock - Google Patents

Abstract

Hydraulically operated pressure head with wedging lock, especially for machines operating in automatic or semi-automatic cycles with the possibility of easy relocation and adaptation for machining of various sizes and shapes. It consists of a pressure head body provided with a through hole, which is fitted with a drilling guide with a sealing insert on the workpiece side and with a tool support tube guide on the opposite side. The pressure head body is guided by guide pins in sliding bushings located in the brackets and is connected to the adjacent part of the double-sided piston rod of the pressure cylinder, the opposite part of which has a modified inclined surface and is in contact with the corresponding surface of the piston rod of the wedging cylinder piston.

Description

The invention relates to a hydraulically operated die head of a deep-drilling device with a wedge lock, in particular for single-purpose machines, automatic and semi-automatic special and single-purpose machines.

On previously known deep drilling machines or machines, the pressure heads are pressed against the workpiece fixed in the fixture by a handwheel, gearing via a lead screw or a toothed rack · After pressing on the part face, the pressure head housing is manually locked against reverse by brake. Upon completion of the operation, the transmission is manually unlocked and the pressure head is moved away from the workpiece to the required distance so that the workpiece can be replaced.

A device is also used where the workpiece is clamped in a fixture and presses manually to a fixed pressure head mounted on the machine.

The handling of these devices is laborious and cannot be used for β semi-automatic or automatic cycle machines.

The above-mentioned drawbacks are eliminated by the hydraulically operated pressure head according to the invention, which consists of a body provided with a bore and guide pins slidably mounted in the sliding brackets of the brackets connected to an adjacent part of the double-sided piston rod. , which is in contact β with the corresponding surface of the wedge piston of the wedge cylinder piston, wherein the through hole is provided on the workpiece side with a drill guide with a sealing insert and on the opposite side with a tool support pipe guide.

The advantage of the hydraulically operated pressure head according to the invention is its simplicity and the possibility of use in machines operating in an automatic or semi-automatic cycle. Construction

242 590 The hydraulically operated pressure head allows it to be easily moved and adapted for machining different sizes and shapes.

An exemplary embodiment of a hydraulically operated pressure head is shown schematically in the accompanying drawing, in which Fig. 1 shows the overall configuration of the pressure head and the hydraulic device in partial section, and Fig. 2 is a plan view A-A thereof.

Holes 2 are formed in the body 2 in which the guide pins 9 are mounted and secured in sliding bushes 10 located in the brackets 11, fastened by means of screws 13 and pins 21 to the support plate 23. In parallel with the pins 9, a through-hole 22 for the drilling guide 2 and the carrier pipe guide 6 through which the tool 5 passes, a sealing insert 4 is clamped on the face of the drilling guide 2 by a sheath 3. The body 2 is provided with a flushing fluid inlet opening. The conduit 7 of the support tube 6 is provided with an imperfect labyrinth and a flushing liquid outlet 8 '. An adjacent part 17 of the double-sided piston rod 15 of the pressure cylinder 14 is attached to the body 2 by means of a pull tab 12. The inclined surface which is in contact 8 with the corresponding surface of the wedge rod 18 of the wedge cylinder piston

20 May

After clamping the workpiece ae, the pressurized fluid is fed into the pick-up roller 14, which pushes the body 2 towards the workpiece until the shim 3 rests. The sealing insert 4 closes the space around the bore hole. The chamfered surface and the wedge rod 18 abut against the adjacent chamfered surface of the double-sided piston rod of the pressure cylinder 14. The tool 5 passes through the bore 22, its drilling part being cut through the drilling guide 2. The sealing insert 4 is pressed against the component The flushing fluid further flows between the drill guide 2 and the cutting blades of the tool 5 and the cavity in the tool support tube 6 flows out and carries chips to an unsupported collecting tank. The remaining flushing fluid passes around the tool 5 via a guide tube 7 of the support tube 6, which is provided with a labyrinth 4 and from there is discharged via an outlet 8 'to

242 590 collecting trough (not shown) · After the drilling operation ee, the taps 19 of the wedge cylinder 20 return together and the wedge rod 18 to the starting position, allowing the press roller to pull the body 1 away from the workpiece ·

Claims (1)

SUMMARY OF THE INVENTION Hydraulically operated deep-drilling head and wedge lock, especially for automatic and semi-automatic special and single-purpose machines, characterized in that it consists of a body (1) provided with a through hole (22) and guide pins (9) slidingly mounted in sliding bushes ( 10) a bracket (11) connected to an adjacent part (17) of the double-sided piston rod (15) of the pressing cylinder (14), the opposite part (16) of which is terminated by an inclined surface in contact β corresponding to the piston wedge (18) surface (19) of the wedge roller (20), wherein the through hole (22) is provided on the workpiece side with a drilling guide (2) 8 with a sealing insert (4) and on the opposite side with a guide (7)