DE2252703C - Deep hole drill - Google Patents

Description

The invention relates to a deep hole drill with one of two tubes lying concentrically one inside the other existing shaft for supplying and removing coolants and lubricants.

When drilling deep holes, e η rotating drill including its holders ig axial 4.S postponed.

This bracket is built on a slide, animal can move on existing guides and to prevent lifting or rearing up while drilling with unier grip strips. so

This mode of operation is only possible with the aid of this intended machine possible. This machine has the disadvantage that its length, without the loss of length, which is required to hold the tool and workpiece are twice as large as that of the / u machine · 5-tlcn Workpiece must be.

The disadvantages outlined above have led to the fact that a device has already been created which enables a rotating drill pipe to be axially displaced in its holder. This facility is very complex. Extensive operational resources are required in order to be able to carry out feed movements at the same time or in a hurry when the movement is rotating. The transmission of these "motion to the drill pipe is carried out by means of two log off i ^6; alternately opening and closing the clamping elements (DT-AS 16 02 944).

A simple design that is like an object of invention a feed device supported on the drill pipe is, for example, the DT-AS 12 82 420 can be found. However, operation with a rotary drill is not possible there.

Taking this prior art into account, the invention is based on the object of simpler Design of the machine used a rotation-driven operation of the with coolant and lubricant supply provided deep hole drill.

This is achieved according to the invention in that the inner tube receiving the drill bits is in the Outer tube has notches lying one behind the other on its outer wall in the axial direction.

The bearing points of the inner pipe to the outer pipe can preferably be used as ball bearings. Roller bearings, preferably Axial ball bearings and tapered roller bearings can be designed.

The bearings located between the two tubes are installed in such a way that they have openings on the Kugelrulen facing away from the sides are equipped. They are required to supply the drilling coolant. These openings are at the repository, i. H. at the end of the drill facing away from the tool, not required.

Further advantageous developments of the invention emerge from the unclaims.

The teeth, blind hole or notch rows are used to move the drill axially in the drill feed or to return in rapid traverse benöligi. The bore wall must not be perforated. the Groove shapes in the axial direction are used to prevent rotation.

With the invention, a practical and inexpensive device is created, which is also smaller, less medium-sized companies are able to handle their drilling operations to be carried out in the parts production according to the real deep drilling process.

There is the great advantage that the bracket for holding the drill is designed without gear means can be.

The invention is explained in more detail using an embodiment shown in the drawings. It indicates

F i g. 1 shows a partial section through the inventive Deep hole drill,

F i g. 2 a partial section from the tool-side end of the deep hole drill,

F i g. 3 shows a section radially through the deep hole drill, FIG. 4 shows a partial section radially through the drill pipe,

F i g. 5 is a plan view of the end of the deep hole drill facing away from the tool, in which the toothing can be seen in the axial direction and the joining of the two tubes is also shown,

F i g. 6 shows an inserted in a drive bracket according to the invention Deep hole drill,

F i g. 7 is a schematic representation of the drive motor for the feed with the holder of the outer tube against twisting,

I i g. 8 a schematic drive, which the inner Tube set in rotation,

F i g. 9 shows a view of the pressure rollers for holding the drill pipe against rotation.

In the drawing, reference numeral 1 denotes the inner tube of deep hole drilling, with the reference / calibrate 2 the outer tube, between which the bearing point with the reference number 3 on the tool pull back End is attached.

Between the two pipes with the reference numbers 1 and 2 there is still the interim storage facility with the symbol

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tion 4 and the depository at wcrk / eugabrückien
The end with the reference number 5 is present.

At the bearing point 3, which is shown schematically in the drawing as a ball bearing, there are bores for the supply of coolant with the designation fe and seals, which the bearing points should be kept free of coolant, indicated with the numbers 7 and 8. Another guide ring is on End bearing attached to the tool is shown with 12, which supplies the coolant between the workpiece and the tool should guide the cutting edges. The actual tool head has been given the reference number 9.

With a two-part design of the inner tube at the bearing point on the Lndc that is attached to the tool, the intermediate piece is denoted by the reference symbol iO indicates.

The fastening screws on the end remote from the tool have the reference symbol II and the sealing ring between the inner pipe and the bearing at the end of the drill pipe is indicated by the number 32.

The teeth located on the outer tube have the reference number 13 or the blind hole rows Notches are indicated with the number 14 and the grooves in the longitudinal direction with the designation 15. the are inlaid strips in the longitudinal direction of the pipe marked with the number 16.

The gearbox drive motor. which to actuate of the advance is required, is denoted by the reference number 17, which is located on the motor shaft The pinion bears the reference number timer 18 and the two pressure rollers located next to it have the reference number 19th

Pressure rollers in serrated roller design are indicated with the number 28. The buck in which the Drill is received, is marked with the reference numeral 20, which have sockets therebetween received the sign 21 and the bracket for the gear drive motor is indicated with the number 31.

The drive motor which drives the inner tube of the drill has the reference number 22. The one in the drawing Drive elements indicated schematically as gearwheels have the reference numerals 23 and 24.

In the case of a drive version with a toothed V-belt, this was assigned the symbol 25 and the The toothed V-belt pulleys required for this are labeled 26 and 27.

15er required for mounting .Slide for Motor that has to drive the inner tube. isi with the Designation 29 is provided and the designation 30 is given for the driver required for this.

For this purpose 2 sheets of drawings

Claims (7)

Patent claims: 1. Deep hole drill with one consisting of two concentrically nested tubes Shaft for supplying and removing coolants and lubricants, characterized in that that the inner tube (1) receiving the drill bits is mounted in the outer tube (2) such that it can be driven in rotation and the outer tube (2) on its outer wall notches lying one behind the other in the axial direction (13,14). 2. Deep hole drill according to claim 1, characterized in that the storage between the inner tube (1) and outer tube (2) consists of at least two roller bearings (3 and 5). 3. Deep hole drill according to claim 1, characterized in that the Einkeroungen in the manner of a Rack (13) are formed. 4. Deep hole drill according to claim I, characterized in that the notches are from a row are formed by blind holes (14). 5. Deep hole drill according to claims I to 4, characterized in that parallel to the rack (13) or row of blind holes (14) incorporated into the outer tube longitudinal grooves (15) or strips (16) attached are. b. Deep hole drill according to claims 1 and 2, characterized in that openings (6 and 33) y> are present at the bearing points between the two tubes for passing through the required cooling liquid. 7. Deep hole drill according to claims 1, 2 and 5, characterized in that the bearings rush (3 and 5) are equipped with seals (7, 8 and 32)