DE1477603B2 - RADIAL DRILLING MACHINE - Google Patents

Description

25th

The invention relates to a radial drilling machine in which either the column on the underframe and ab is movably mounted and carries the boom with the drill head at its upper end, or the boom is mounted movably up and down on the column or on a rotating casing and in addition Pivoting movements of the tool about a vertical pivot axis are to be carried out.

The known radial drilling machines of the type in question either have a rotary casing, on which the boom moves up and down, with the rotating jacket around an inner column in the Area of about 360 ° is swiveled, or a column that cannot be swiveled in an underframe or is pivotably mounted and to which the boom is assigned pivotably or non-pivotably is.

Such radial drilling machines should be minimal under the drilling pressure with the least amount of material rearing up. Both the back and forth and the pivoting movement as well as the up and down movement of the boom should be as smooth as possible, easily and without tilting. Also should the guides of the parts to be moved are in contact with no play and are not subject to wear, and the manufacturing costs should be low.

In the known designs, these requirements are only partially met. So you have it horizontally slidable boom smoothly and free of play mounted on rollers and the profile of the boom In a material-saving manner, it is made rigid by giving it a cross-section that is in the bending axis had a particularly high moment of inertia and thus a high level of rigidity. The column had however, these properties do not. One also has the rotating casing, which is around an inner column with a circular Cross-section swivels, made more rigid by giving it a deviating from the circle Cross-sectional shape, e.g. B. ellipse or prism. The cross-section of the inner pillar that is decisive for the rearing However, it still had a circular cross-section because the load was in the area of the Swiveling of about 360 ° takes place. In addition, the back and forth movement and / or the up- and downward movement in sliding guides, which must have a certain amount of play and are subject to wear. In all known designs, the column and arm each have different cross-sectional shapes and a completely different design of the guides, whereby an efficient production of as many similar parts as possible was excluded. The goal the present invention is to overcome these drawbacks.

For the above purpose are according to the invention in the new radial drilling machine on the outer circumference of the column or the rotating casing at least 2 pairs in the longitudinal direction of the column or casing extending and here in pairs opposite planar guide surface sections and the one for guiding the up and down movement with the column or the rotating casing cooperating counterpart at least 2 pairs of rolling elements, z. B. Guide rollers, provided each of which on a guide surface section assigned to it, rolling on this is applied. In the arrangement according to the invention, the deviation of the cross section from the Circular shape prevents twisting during the up and down movement. On the other hand is the storage made so that the friction during this movement on the inevitable Minimum is reduced, so that there is also the possibility of the drilling feed in the rolling Include movement without the previously existing risk of tilting. As can be seen from the exemplary embodiments described below, this is a simple one and efficient production of the individual parts possible, this can even be done with the cheapest ones Versions with a circular cross-section of the column or the rotating casing compete by z. B. the column (or the rotating casing) in the parts taking part in the tour and the boom can have the same cross-sectional shape with possibly the same dimensions. Also the guide for the column and the boom that can be moved back and forth or for the boom that can move up and down and the slide for the drill head can e.g. expediently be of the same type and possibly even with the same Dimensions are formed. With such a design of the column and the boom or their guides can thus the same elements are used, whereby the production and the Warehousing at the manufacturer is simplified and cheaper.

In the drawing, exemplary embodiments of the subject matter of the invention are shown. It shows

1 shows a radial drilling machine according to the invention in a side view in a schematic representation,

2a, 2b, 2c, 2d, 2e, 2f and 2g are different Types of embodiment for the cross-sectional profile of a column or a boom of the invention Arrangement,

F i g. 3a shows a new guide arrangement for a column of a radial drilling machine according to the invention in a side view in partial representation in a vertical section,

F i g. 3 b the arrangement according to FIG. 3 a in one

Top view in a section along the line III-III the F i g. 3 a and

4 shows the pivotable mounting of a modified one Embodiment of a column of a radial drilling machine according to the invention in a side view in a vertical section and in partial representation, wherein

FIG. 4a shows a detail of the arrangement according to FIG. 4 represents in a plan view.

In Fig. 1 is a radial drilling machine according to the invention in a side view in schematic Illustration shown. This machine has a column in a manner known per se, which is attached to the underframe2 is mounted movable and movable up and down in the direction of arrow 3 and at its upper end the Roller box 4 carries, the reciprocating guide according to arrow 5 of the boom 6 with the Drill head 7 is used. In addition, provision is made in the arrangement according to the invention that a pivoting of the tool about a vertical pivot axis can be carried out, which coincides with the vertical axis of symmetry 8 of the column. In the embodiment according to FIG. 1 is for this purpose the column in a known manner on the base 2 and non-rotatable carries at its upper end a flange-like bearing extension 9 on which the roller box 4 in Direction of arrow 10 is pivotable. Other designs as the usual design of radial drilling machines with fixed column (or rotating casing) and movable up and down Boom with back and forth shiftable drilling slide or on the lesser known version with rotatable column and up and down and back and forth movable boom are not particularly in the drawing shown.

According to the invention, at least two pairs of planar guide surface sections extending in the longitudinal direction of the column are provided on the outer circumference of the column and are opposite one another in pairs. Here, the column can have a rectangular or square cross-section, as in FIG. 2a is shown at 11. This cross-section can also be rhombic, or it can have the shape of a triangle, as in FIG. 2b is shown at 12. In the arrangement according to FIG. 2c, the column again has a rectangular cross-section 13, but two lateral extensions 13a, 13b are provided. In FIG. 2d, a square cross section 14 for the column is again shown, and the arrangement according to FIG. 2e also has a profile in the shape of a delta. At least two pairs of guide rollers 15 a, 15 b, 16 a, 16 b (see FIG. 1) are assigned to these guide surface sections for guiding the column, the arrangement being such that each guide roller on only one guide surface section assigned to it is applied from the outside and hereby rolls on this. The same arrangement can also be used to guide the boom. In the arrangement according to FIG. 2a, the pairs of guide rollers are denoted by 15 ', 15' α and 16 ', 16' α, respectively, in the embodiment according to FIG. 2 b with 15 ", 15" α, 16 ", 16" α and in the embodiment according to FIG. 2c with 15 '", 15'" α and 16 '", 16'" a. In the embodiment according to FIG. 2 d is not in each case two pairs of guide rollers, but four such pairs 17 a, 17 b, ITa, 17 'b, 17 "α, ITb, IT" are α, IT "b provided. In the embodiment according Fig.2g the column has 50 Approaches' 51a, 51 b, which cooperate with guide rollers 52 a, 52 6, 53 a, 53 b .
It can be seen from the drawing that, when using a profile in the form of a delta, the arrangement can expediently be made so that the longer axis lies in the direction of the rearing forces. This results in a particularly high and favorable rigidity. At the in

The outer circumference has the shape of the profile shown in Fig.2e of the hollow profile 18 has the shape of a delta with a raised longitudinal axis of symmetry 19, during the Cavity 20 is formed so that on corresponding lugs 20 a body with a circular cross-section can be included. The shape of the outer circumference and the formation of the bore of the Hollow profile result in a greater wall thickness of the column or the boom at the points that are in particular Dimensions stressed by tension and pressure

ao, which results in an increased flexural rigidity of the element concerned. In addition, this results in a particularly favorable torsional strength, t is comparable with the known arrangements * is not found. As I said, the profile is designed so that round bodies such as motors 21 etc. can be accommodated in the element concerned. You can also provide stools 22 on the profile, which can be used as cooling fins for the possible motor or as a processing support. For special stiffening, the profile can be designed as a double-walled hollow body or provided with transverse ribs. The embodiment according to Figure 2e is produced by the so-called hot extrusion process. However, you can also assemble the column and / or the boom from several profile sections connected to one another by welding, such as, for. B. in Fig. 4 a is shown, in which the two parts 23 a, 23 b of the profile are welded together at 23 c j

are. j

The guide surface sections on the column and /!

or the boom may be made of hardened by area \ sections at the outer periphery of the respective EIe-,

mentes exist. However, they can also consist of hard I steel strips or steel strips, as they are, for. B. j in FIG. 2 b at 24 a, 24 b, 24 c, 24 d or in F i g. 2 fi are shown at 25. These steel strips or steel bands are attached to the circumference of the column or arm, for example | by bracing, pressing in, twisting, twisting; screw, glue or the like attached. In the embodiment according to FIG. 2 f grooves 25 a, 25 b are incorporated on the outer circumference of the profile 26, in which adhesive is used, which is used to attach the steel strips 25 to the profile.

The guide rollers can also be readjusted with respect to the assigned guide surface section on the column by means of an eccentric arrangement of a type known per se.
In the boom as in the column, two axially superimposed or spaced groups of bearing bodies can be provided for storage, each consisting of two pairs of such bearing bodies, the arrangement being such that both bearing body pairs of the lower or rear group as a roller bearing body, ζ. B. rollers are formed and a pair of bearing bodies of the upper or the front group is formed by a sliding bearing, which consists of a

the circumference of the column is curved sliding jaw. Such a plain bearing is indicated, for example, in FIG. 1 at 16b and at 4d. In this way, the bearing forces can be absorbed by the sliding pieces under the drilling pressure, while the sliding pieces are relieved by the weight of the various machine parts without drilling pressure. The plain bearings can also be designed in any other way. The sliding bearing can be assigned a clamping device which contains a clamping piece which can be actuated in a manner known per se with the aid of a lever or a screw or in a mechanical, pneumatic, hydraulic, electromagnetic way, etc.

In order to increase the interchangeability of the individual elements, according to the embodiment according to FIG. 3 a and 3 b combine the bearing bodies of each group of bearing body pairs into one unit. In this arrangement, the rollers 30 a, 30 b, 30 d sit in nose-like projections 31 a, 31 b, 31 c and 31 rf, which extend in the axial direction outward and are supported by rings 32 a, 32 b , which the Enclose the column or the boom. The guide rollers can also be mounted differently, in particular the attachments can also be designed differently. These rings are located axially at a distance from one another and contain a cylindrical intermediate piece 33 between them, with an expansion or expansion ring 34 being provided between the facing end of the intermediate piece and the ring, which expands in the radial direction when axially compressed and thereby from on the inside against the corresponding mating surface on the guide housing 35. The rings 32 a, 32 b are drawn together and clamped together by means of the clamping screws 36, 4 of which are drawn. The intermediate piece and the guide housing are arranged coaxially to one another and form a double cylinder, which is particularly favorable from the standpoint of strength and rigidity. In addition, with this arrangement, with the simplest machining of the bore of the guide housing, an exact central mounting and secure fastening of the entire guide assembly is guaranteed. The roller body or the rings with guide rollers can be manufactured individually and then either in the roller box as a guide for the boom or in the guide housing as a guide for. the column can be installed. In the case of the FIG. 3 a, 3 b illustrated embodiment, the slide bearing opposite the clamping piece 37 is provided, which sits at one end of a steel bar 38 extending in the axial direction along the spool or boom circumference and attached at its other end to the lower ring and to the upper ring and is guided here movably. The screw 39 is used to actuate the clamping device. The receptacles for the steel bar and the guide for the clamping piece can also be designed so that they can be used for adjustment during machining and assembly.

Due to the adjustability of the guides, it may be possible to dispense with clamping the column will.

The entire guide unit in the guide housing is housed in a dust-proof manner, with the free part with the help of a bellows, as shown in FIG. 3a is shown at 40, sealed in a dust-proof manner is. Instead of a bellows, a telescopic arrangement of rings etc. can also be used.

In the modified embodiment of the subject matter of the invention according to FIG. 4 the column is rotatably mounted on the underframe. For this purpose, the rings 41 a, 41 b of the column 42 are each rotatably mounted in a bearing ring 43 α and 43 b , which is seated on the guide housing 44 of the underframe. Ball bearings or wire ball bearings 45 are used for rotatable mounting, and strips 46 a, 46 b are used to readjust the mounting. The clamping effect is exerted in the direction of arrow 47. In this case, the roller box is arranged non-pivotable on the column.

As is not shown in the drawing, you can also store and guide the drilling quill like the column and the boom or the drilling carriage and also design them with a corresponding profile. Furthermore, as already indicated, the drilling advance can be brought about by the upward and downward movement of the column or the boom.
To simplify and rationalize, you can - as already indicated at the beginning - give the parts of the column or the rotating casing and the boom that are participating in the tour the same cross-sectional shape; you can also - with the column moving up and down - the guides for the column and the their associated reciprocating boom or - with up and down movable boom and back and forth movable drilling slide - form the guides for the up and down movable arm and the slide for the drill head in the same way. Here, for example, the cross-sectional shapes of the column (or the rotating casing) and the boom or the guides for the column and for the boom that can be moved back and forth or for the boom that can move up and down and for the slide for the drill head can have the same dimensions .

Instead of an expanding ring, you can also use a rubber-like ring made of plastic material, e.g. B. from the Use the plastic known under the trade name "Neoprene", which is made by pressing in on the face expands and thereby causes the clamping on the guide housing.

1 sheet of drawings

209 585 / Π9

Claims (17)

Patent claims: '■ "■ 1. Radial drilling machine, in which either the column on the underframe is movably mounted up and down and carries the boom with the drill head at its upper end, or the boom is movably mounted up and down on the column or on a rotating casing and also has pivoting movements of the tool are to be carried out around a vertical pivot axis, characterized in that the boom (6, 11, 12, 13, 14, 18, 26, 50, 23 a and 23 b) and the column (1, 42) or the rotating casing have a cross-section that differs from the circular shape in a manner known per se, that at least 2 pairs of flat guide surface sections extending in the longitudinal direction of the column or the jacket and lying opposite each other in pairs are provided on the outer circumference of the column or the rotating casing, similar to known brackets and that these guide surface sections at least 2 pairs of to guide the up and down movement with the column or rotating casing together Acting counterpart provided rolling elements of a known type, for. B. guide rollers (15 ', 15 a, 15 b, 15'α, 16', 16 α, 16'α, 15 ", 15" α, 16 ", 16" α, 15 '", 15'" α, 16 '", 16'" α, 17 α, YIb, Yl'a, ITb, 17 " a, XTb, Yl '" a, IVb, 30α, 30'α, 30 b, 30'6, 52α, 52b, 53 α, 53 b) are assigned, each of which rests against a guide surface section assigned to it, rolling against it. 2. Radial drilling machine according to claim 1, characterized in that the on the guide participating parts of the column (1, 42) (or the rotating casing) and the boom (6, 11, 12, 13, 14, 18, 26, 50, 23 a and 23 6) have the same cross-sectional shape and z. B. also the same May have dimensions. 3. Radial drilling machine according to one of claims 1 or 2, characterized in that the Column (1, 42) is essentially hollow and in cross section the shape of a polygon, e.g. B. a rectangle (13) or a square (14), a rhombus-like structure, etc. (15). 4. Radial drilling machine according to claim 3, characterized in that the column (1, 42) in cross-section the shape of a biangle (12, _18,: α 23 and 23 b). 5. Radial drilling machine according to claim 4, characterized in that when using a profile in the form of a delta (12, 23 a and 23 b) the arrangement is made so that the longer axis (19) is in the direction of the Aufbäumungskräf te. 6. Radial drilling machine according to one of claims 3 to 5, characterized in that the Two-cornered (18) in the through hole lugs (20 α) for receiving parts with circular or nearly circular cross-sections (20). 7. Radial drilling machine according to one of claims 1 to 6, characterized in that the column (1, 42) and / or the boom (6, 11, 12, 13, 14, 18, 26, 50, 23 a and 23 b) is made by the so-called hot extrusion process. 8. Radial drilling machine according to one of claims 1 to 7, characterized in that the guides (15 ', 15 a, 15 b, 15'a, 16', 16 a, 15 ", 15" a, 16 ", 16" a , 15 "', 15'" a, 16 "', 16'" a, YIa, YIb, Yl'a, ITb, Yl "a, ITb, Yl '" a, Yl'"b, 30 a, 30 ' a, 30 b, 3Wb, 52 a, SIb, 53 a, 53 b, 4 J, 16 b) can be adjusted and readjusted with respect to the associated guide surface section on the column in a manner known per se. 9. Radial drilling machine according to one of claims 1 to 8, characterized in that the column (1) on the underframe (2) of the machine in a manner known per se with the help of two axially superposed groups of 2 pairs of bearing bodies each up and down is stored, of which both pairs of bearing bodies of one group, e.g. the lower group, are designed as roller bearing bodies, e.g. rollers (15a, 15b) and the pair of bearing bodies of the other group, which is loaded by the drilling pressure, is formed by a sliding bearing (16 ό). 10. Radial drilling machine according to claim 9, characterized in that the sliding bearing (16 b) is assigned a clamping device which contains a clamping piece (37) which, in a manner known per se, with the aid of a lever or a screw, or on a mechanical, pneumatic, can be operated hydraulically or electromagnetically. 11. Radial drilling machine according to one of claims 9 and 10, characterized in that the bearing bodies of each group of bearing body pairs are combined to form a unit which has a ring (32 a, 32 b, 41 a, 41) surrounding the column (42) or the boom b) contains, the lugs (31 a, 31 b, 31 c, 31 d) , on each of which the roller or sliding bearing is attached so that it rests on the associated guide surface section. 12. Radial drilling machine according to claim 11, characterized in that the mutually associated, axially spaced rings (32 a, 32 b, 43 a, 43 6) contain a cylindrical intermediate piece (33, 44) between them and by means of clamping screws (36 ) or the like are drawn together and tensioned, the intermediate piece (33, 44) and the guide housing (35) being expediently arranged coaxially to one another and forming a double cylinder. 13. Radial drilling machine according to claim 12, characterized in that an axially compressible expansion or expansion ring (34) is provided between each ring (32 a, 32 b, 43 c, 43 b) and the facing end of the intermediate piece (33, 44) which expands in the radial direction when it is axially compressed and, in the process, rests from the inside on corresponding opposing surfaces on a guide housing (35) serving to guide the column or the boom. 14. Radial drilling machine according to one of claims 11 to 13, characterized in that the clamping piece (37) of the clamping device at one end of an in the axial direction on Extending along the circumference of the column or cantilever, with its other end at the lower or Rear ring attached resilient steel strip (38) sits and is guided to and fro on the upper or front ring (32 a). 15. Radial drilling machine according to one of claims 1 to 14, characterized in that the column (1) is guided non-rotatably on the base (2) and at its upper end a z. B. flange-like bearing extension (9) carries, on which the roller box (4) expediently through Rolling bearing is pivotable (10). 16. Radial drilling machine according to one of claims 1 to 15, characterized in that the rings (41 a, 41 b) of the roller box non-pivotable supporting column (42) each in a bearing ring (43 a, 43 6) on the guide housing of the underframe z. B. by means of ball bearings (45) etc. are rotatably mounted. 17. Radial drilling machine according to one of claims 1 to 16, characterized in that the column (1, 42) or the boom (6) not only for the adjustment movements but also for the working feed can be moved up and down.