DE1923487A1 - Multi-spindle drill head switching machine - Google Patents

Description

Multi-spindle drill head switching machine.

The invention relates to a Mehrspindelbohrkop £ -Schaltautomat, consisting of a column arranged vertically on a stand, a work table with drive and an automatic drill head changing device with a variety of increasing drill heads as required.

Such multi-spindle drilling head automatic switchgear serve the purpose of successive Machining operations such as drilling, boring, chamfering, countersinking, reaming and thread cutting to do.

There are already multi-spindle drilling head switching or changing machines known, their overall structure, mechanical electrical and hydraulic part, however, expensive and is complicated.

With these machines, the working movement takes place after centering and coupling the drill head transported into the working position to the Superordinate drill head carrier slide unit in the axial column direction. Necessary is here either an arrangement of the changing device as a separate, from the Basic machine (stand, column work table) separate unit in the form of a round magazine or a changing device arranged around the vertical column with the same Features, after retracting or swiveling in the drill head from the 4 changing device solved and centered on the drilling slide, coupled and braced In In the same way, after the end of the working stroke, the drill head is uncoupled and relaxed and centered in the changing device by once back and transported to the other to become. In addition to the structural effort, there are longer admission times of the individual multi-spindle drilling heads and an increased susceptibility to failure of the entire system The investment costs for this are due to the high structural effort Investments relatively high.

The invention is based on the object, the change times of the individual To keep drill bits small and the construction effort low. In particular to a magazine that is separate from the basic machine and to one in the working position releasable connection between the drill head and Wechseleinrich device can be dispensed with. Furthermore, the investment costs are to be kept low so that the processing sequences can be carried out in an economically optimal way. These objects are according to the invention solved in that at the free end of the column, the changing device with a plurality is rotatably mounted by fixed drill heads, the changing device together with the fixed drill heads in the axial column direction arranged and for the execution of the working movement one, in the axial column direction movable work table is provided0 Another feature of the invention is, that the changing device by means of suitable drive and locking elements in sections is rotatable, adjustable and lockable.

The arrangement of the drive is according to the invention achieved, that in the working position of the respective drill head a connection via coupling elements to the drive and fixed coupling elements on the output side for each drill head are arranged in the changing device.

Another feature of the invention is that on the guide prisms an automatic rotary indexing table arranged to be movable in the axial column direction is. This arrangement enables machining paths in the radial workpiece direction are executed. In addition, several sides can be machined on one workpiece.

The advantages achieved with the invention are in particular: that the individual drill heads are firmly connected to the exchange unit. Through this fixed connection eliminates the need for centering, coupling and bracing of each individual, drill head transported in the working position. The change process, i.e. the following Transporting two drill heads into the working position is thus considerably simplified and can also be carried out more quickly. Thus, there are machining operations economically feasible. In addition, the arrangement of the vertical movable automatic rotary indexing tables, multi-sided machining operations can be carried out. The invention significantly lowers the investment price of the system, because the structural, mechanical, electrical and hydraulic parts of the system are simple and is straightforward.

Due to the special arrangement of the vertically movable automatic Rotary indexing table shows that the occurring moment results from the machining force and counter force of the lifting cylinder can be kept very small, so that the entire Construction is much less stressed than with previously known machines was the case.

A preferred embodiment is shown in the drawing and is described in more detail below. 1 shows a side view of the Multi-spindle drill head indexing machines; Fig. 2 shows the arrangement with rotary indexing table for radial or multi-sided workpiece machining; On the machine stand 1 is a column 2 fixed vertically. A work table can be placed on the guide prisms 3 4 can be moved in the axial column direction. The work table 4 is of a Lift cylinder 5 driven. At the free end of the column 2 is a changing device 15 rotatably mounted with a plurality of fixed drill heads 6. The changing facility 15 is gradually rotatable, adjustable and with the fixed drill heads 6 lockable. An electric or oil motor 7 can be used as the drive, which drives a pinion 8 which engages in a ring gear 9.

A cantilever 10 is placed on the free end of the column 2.

He carries a fixed drive 11, which is used for all drill heads finds. In the working position of the respective drill head there is a coupling element a connection to this drive 11. On the output side are 6 for each drill head, Coupling elements 12 are fixedly arranged in the exchange device 15.

In Fig. 2 an extension of the invention is shown. On the Guide prism 3, an automatic rotary indexing table 13 can be moved vertically arranged. The rotary indexing table 1) is moved by the lifting cylinder 5. By This arrangement can be used for machining operations in the radial workpiece direction and also carry out multi-sided machining operations. The resultant from the occurring machining forces generated by the arrangement of the lifting cylinder very small overturning moment, which can become 0 with the appropriate dimensions. the The machine is controlled from a central control cabinet 14.

Claims (4)

Patent claims W Multi-spindle drilling head indexing machine, consisting of one, on one Stand vertically arranged column, a work table with a drive and an automatic one Drill head changing device with a large number of drill bits to be picked up as required, d a d u r c h e Ic e n n z e i c h n e t that at the free end of the column (2) the Changing device (15) with # a large number of fixed drill heads (6) is rotatably mounted, the changing device (15) together with the fixedly arranged Drill heads (6) fixedly arranged in the axial column direction and for execution the working movement a work table (4) that can be moved in the axial direction of the column is provided. 2. Multi-spindle drilling head automatic switch according to claim 1, characterized in that that the changing device (15) by suitable drive and locking elements is arranged in sections rotatable, adjustable and lockable. 3. Multi-spindle drill head automatic switch according to claims 1 and 2, with an attached cantilever beam that has a fixed drive for all drill heads carries, characterized in that in the working position of the respective drill head There is a connection to the drive (11) via coupling elements (12) and on the output side for each drill head coupling elements (la) are fixedly arranged in the exchange device (15) are. 4. Multi-spindle> ear head sohaltautomat according to claims 1 to ) characterized in that an automatic rotary indexing table on the guide prisms (3) (13) is arranged to move in the axial column direction bar.