FI117547B - Tools, machine tools and assembly procedures - Google Patents

Description

117547

TOOL, MACHINE TOOL AND METHOD FOR CONFIGURING

The invention relates to a tool according to the preamble of claim 1. The invention further relates to a tool according to the preamble of claim 4. The invention further relates to a machine tool according to the preamble of claim 9. The invention also relates to a manufacturing and assembly process in a machine tool according to the preamble of claim 15.

10

In accordance with the prior art, there is a wide variety of automatic machines for installing various small parts, with the aim of automating assembly and installation work. In this case, various special purpose-built machines are used which are typically suitable for installing a single part or performing a work step. One known assembly step is to place the alignment pins, for example, on a molded metal frame which also accommodates the circuit board and thereby forms a rack for that circuit board and other components that are attached thereto. For example, milling and drilling are involved in the manufacture of the frame, whereupon pins are inserted into the drilled holes, on which turn the circuit board. The positioning of the pins is typically done manually by hitting the tool to work. * ·: ·. the phase is time consuming and requires precision. The frame is made, for example, by attaching it to a pallet or a substrate to which a number of frame blanks can be attached, then transported to a machining center that performs interchangeable tools as a precursor. both milling and drilling. The machining center typically comprises an automatic tool changer and the necessary tools for the work steps to be applied to the frame. The ma-30 frame material, dimensions and appearance may vary depending on the application. After the machining steps, the frame is moved to the stud where the studs are fixed. The frames are then moved or transported to a location where the circuit boards are mounted and actually assembled.

Some examples of state-of-the-art machining centers, such as automatic tool changers and interchangeable tools, are disclosed in US 4,575,918 and US 5,439,434.

117547 2

Prior art machines and manufacturing methods are either slow, time-consuming and thus cost-intensive or manually cost-intensive to invest in automated, particularly taping machines. These special machines are therefore only suitable for mass production or continuous production. Manual installation and configuration of the products are then excluded. because of the slowness.

The object of the invention is to eliminate the above-described problems, whereby, for example, it is possible to perform the stud by applying an existing machine base, whereby special tools are utilized. In the invention, it is possible, for example, to carry out the assembly using a prior art machine tool, preferably a machining center 15, which is further provided with an automatic tool changer. The method according to the invention can thus be applied to the same machine tool where other machining operations are carried out, for example, relating to the preparation of assembly workpieces.

The invention can be applied to the installation of a wide variety of small parts and assembly of articles, such as various fasteners such as pins, screws, pins, threaded elements and rivets, and various other assembly parts such as rings, bushes, bearings, • · · bearing parts and other functional elements such as free couplings.

25

The characteristic features of a tool according to the invention are set forth in claim 1. The characteristic features of a tool according to the invention are set forth in claim 4. The characteristic features of a machine tool according to the invention are set forth in claim 9.

Characteristic features of the method of the invention are set forth in claim 15. Other preferred embodiments of the invention are set forth in the dependent claims.

It is a fundamental principle of the invention to carry out both the manufacturing and assembly steps in the same machine tool or, in particular, in a machining center provided with a tool magazine which stores interchangeable tools, some of which are suitable for workpieces. '3 117547? machining, such as drilling or milling. One or more tools, in turn, is a special tool suitable for mounting the desired small parts on that workpiece. The realization of the central principle utilizes an interchangeable tool 5 constructed as an installation tool and preferably provided with a magazine which retains a plurality of small parts to be mounted. Using a special tool, it is also possible that the machine tool can be converted to assembly work only.

The invention has the advantage of being suitable for continuous production because the small parts are stored in the magazine enclosed with the tool and the appropriate machine tool or similar equipment is used, in particular one with an automatic tool change system. A particular advantage is that no special machine of its own is needed, for example, for the taping step. At the same time, workpiece transfers are avoided, especially if machining steps are required before and after the installation work.

In any case, the displacements will be reduced because it is not necessary to perform machining steps on a different machine before installation.

20 There is a particular advantage in the precision of the installation in that the workpiece does not have to be removed and reattached before or after the machining steps. ** · keen. The special tool has the advantage of being able to fit very different ·. * ”Parts, as long as the specific operating principles of the tool are slightly modified. A special advantage is that the tool can be kept ·: ··: 25 fairly simple, as the machine tool can take care of the positioning, rotation and feed movement of the tool, etc. ···. I created those features without having to build the tool itself. In this case, the machine tool takes care, for example, of different rotational movements or the stud. the stroke movement required and the retraction movement. The special feature of the tool *: ./ 30 is the feed of small parts forward using the tool's rotation movement, · · ·; · * without the need for separate actuators for feeding. The reciprocating movement of the tool is also utilized for moving small parts.

• · · • *

»I

• * · /; By means of known means, for example, a torque *: "35 limitation or sensor can be built into the tool in order to identify the forces used during installation. The sensing can be used to monitor both the success of the entire operating process and the fact that the small part to be installed is correctly positioned 117547 1 * 4 and moved to the workpiece. This will allow you to identify error situations and deploy a new tool.

The tools are usually attached to the machine tool by standard 5 and interchangeable fasteners, which often can even supply compressed air to the tool. For example, it is possible to direct the flow of coolant to the tool through said attachment. Pneumatic or hydraulic energy can be utilized in the tool, for example, for blowing or other tool functions.

10 With external power, it is even possible to execute the tool's own business operations, which are independent of the machine tool spindle business.

The invention will be further illustrated in the following description by means of an example of a preferred embodiment, with reference to the accompanying drawings, in which: Figure 1 is a side view of a special pin-mounting tool, and Figure 2 is an end view of the tool of Figure 1; Fig. 3 is a side elevational view of the tool of Fig. 1 and sectioned in the longitudinal direction (intersection A-A in Fig. 2).

Figures 1 to 3 show a special tool according to an embodiment of the invention, specifically designed for mounting pins 15.

• ·. ···. The pins to be treated in this case are, for example, metal pins about 25-35 mm long and about 6-9 mm thick, the first end of which is conical and the other end is flat. The pin body can also be surrounded by a 1-3 mm wide collar, which is used for both the pin mounting and the mounting of the PCB, for example.

• * • · * * ·

With reference to Figures 1 to 3, the tool extends in the longitudinal axis B, which is, at the same time, the center line and the direction to which also the machine direction in the Z direction ~ 'i *; 35 feed movement joins. In this case, the tool does not need to have its own separate * · · '· feed movement, but the movements are performed by feeding the entire tool and moving the machine tool spindle unit to which the tool is attached and 117547 5 equipped with the necessary business functions. The tool comprises a first end 1 having standard, interchangeable means 2 for attaching the tool to the tool holder of the machine tool, which is located in the spindle unit and is compatible with the means 2.

5

The tool is inserted in a Z-direction motion and the clamp grips the tool, pulls it in place and clamps the tool in motion. The spindle unit allows the tool to be moved in the X and Y directions, which are transverse to each other and relative to the B direction, and in the Z direction. The means 2 can be implemented in various ways known per se, including tool-conical tool fasteners with an outer surface, the end of which is gripped and the tool is pulled into a housing having a conical surface. At the same time, the tool focuses and precisely positions itself to the desired position. In the embodiment shown, the outer surface 3 of the means 2 is also conical, but the spindle assembly engages the tool from the inside. A space 5 is provided inside the tool head 1, where the fixture rests and holds the tool stationary. Other desired structures related to the locking or positioning of the tool are also made on the head 1.

. The fastening means 2 also comprise means 4 on the outer surface of the head 1 which can be gripped by the automatic tool changer of the machine. In this case, said means 4 comprise a working groove 6 which is centered around the tool. : to the surrounding collar 7. It may also be formed in the means 4. ·· *! other structures related to the positioning or locking of the tool, • · .λ such as the transverse guide surface 8 and the frame 9 around the -s. . collar 10.

• · ♦ 30

The tool further comprises a Z-telescopic auxiliary body 11, which allows the tool to feed in the event that the other end 12 of the tool has reached the workpiece. Here, I

• · · In the case of the case, the contribution is utilized by inserting a pin *; * | 35 is pushed forcibly by means of a pin pusher 13, which is non-protruding and secured to the body 9 and in this embodiment is also centrally located on the centerline B. However, the pail magazine 14 s 6 117547 retracts with the subframe 11, the pin 15 in front of the pusher 13, after which the connection of the pin to the workpiece can be repeated. At the end of the pusher 13, if necessary, there are means for aligning the pin 5, for example a recess. The insertion of the pin 15 into the workpiece hole is accomplished by a Z-feed movement of the spindle unit. j,

The pusher 13 is thus arranged to move with the frame 9 and the first end 1. A cylindrical helical spring 16 is disposed about the body 9, between the bodies 9 and 11, which tends to push the magazine 14 away from the body 9 in the Z-mouth 10. However, the movement is limited by the locking ring 24 in the body 9. mm as measured from the reference slide 8. The pin magazine 14 also has a diameter of, for example, about 200 mm.

15

The magazine 14 is mounted around and in front of the pusher 13. The magazine 14 is secured to the auxiliary body 11 by a bearing-like free coupling 17. The back of the magazine 14 is supported by a back flange 18 which in turn is fixedly attached to the auxiliary body 11. The magazine 14 20 and the flange 18 move forward and backward simultaneously.

The parts shown are mainly rotationally symmetrical. The body 9 has a cable. An elongation 19 comprising parallel surfaces against which the respective surfaces of the auxiliary body 11 rest, thereby preventing rotation. The pusher V · ': 13 is pin-like and sits against the back of the pin 15 or immediately behind it; The pin 15 is disposed parallel to the Z movement and its front end i, j is inserted into a hole or recess in the workpiece. The pin ···. '15 and the pusher 13 are located on the center line of the tool. The magazine 14 is allowed to rotate by means of the free clutch 17 in the Z direction and freely by the body 11. . around, but only in one direction.

• · ♦ ·· 30 ···

The magazine 14 comprises a helical groove 20 which begins at the outer periphery of the magazine 14 and ends at the pusher 13. The spiral groove 20 is provided adjacent to a plurality of pins parallel to each other and to the Z direction. The pins are loose and, in this case, for example, are not secured to each other in a strip. The pins are: * aligned with the same plane transverse to the Z direction. The spiral shape 20 allows the magazine 14 to accommodate a large '' 'Tr 117547 f 7, but nevertheless the radius of the magazine 14 is as small as possible The shape of the spiral groove 20 may conform to the appearance of the pin, thereby ensuring that the pins remain straight and easy to move.The pins move in the groove towards center where they 5 the previous pin has been pushed out of the magazine 14 and the pusher 13 has returned to lower than the pin 15 in the Z direction so that the lateral surface of the pusher 13 or the previous pin does not prevent the next pin from being positioned in the center of the magazine. The feeding means 21 include, for example, the exterior of the magazine 14 a part 33 which presses against the workpiece. The guide groove 20 is also guided by an inlet 29 on the outer periphery.

In addition, the spiral groove 20 is open at the rear and the flange 18 forms in a way 15 its base. The flange 18, in turn, is formed with a circular groove 23 disposed eccentrically relative to the Z direction and the freewheel clutch 17 which allows the magazine 14 to rotate freely only in one direction relative to the flange 18 as viewed counterclockwise from the other end 12 of the tool. In turn, a circular groove 23, i.e. a guide track 20, is provided with a ring 25 comprising a guide pin 26 which extends and rests in a spiral groove 20. The guide pin 26 forms a part. The mating members 27, which are intended to move the pins forward in the groove 20. The mating members further comprise, for example, a compression spring 28. ** · * and a support member 22 which rests against the outer stud. The spring 28 25 holds the pins together and also takes into account the difference in position between the magazine 14 and the flange 18. As the number of pins decreases, ♦ ·.] Has to be moved closer to the pushing pin 26 simultaneously ...

'* The 14 centers of the magazine, now realized by ring 25, which

. . the ring 25 and the groove 23 are arranged so that the guide pin 26 is capable of;

30 to move in a spiral groove 20 both at its outer circumference and as close as possible to its center.

• '· • · • «« ·

Ring 25 and pin 26 are allowed to move at least closer to / *. to the center. This is, therefore, a particular embodiment of the invention in which • »*; * | 35 avoids open or straight grooves on the rear surface of magazine 14 through which the pins could drip out. The magazine 14 is allowed to rotate freely relative to the guide track 23 and thus the flange 18 in only one direction 117547 8, whereby the coil groove 20 also moves away from the feed members 21 and counterclockwise in Figure 2, while the counter members 27 are simultaneously moved in the coil groove 20 derata 23 move relative to one another as magazine 14 rotates in free direction counterclockwise, or preferably when guide rail 23 is rotated with subframe 11 about feed point 21, now clockwise in Figure 2, or when both are rotated simultaneously.

In this case, the guide track 23 may also be straight and radial to the magazine 14.

10

The rotational movement of the guide path 23 is accomplished by briefly rotating the entire tool about its longitudinal axis. As the movement begins, the magazine 14 tends to remain in place due to its mass, so that the counter members 27 moving in the guide track 23 are able to move forward in the spiral groove 20 and, if necessary, closer to the A-centerline. The guide track 23 shown in Figure 2 has the shape of a circular arc. The mating members 27 are allowed to move freely along the guide track 23 at least along the center line, in the clockwise direction in Figure 2. The rotation and stopping of the body 9 is caused by the operations of the spindle unit. The magazine 14 cannot rotate 20 back to the same former position with respect to the guide track 23, since the free clutch 17 prevents its movement independent of the flange 18, «. '·· clockwise in Figure 2.

··· ·· »*»

Similarly, a number of other small parts can be mounted, which can be stored in a magazine 14 in the tool. pieces that can be placed in a desired position in a row, for example in a spiral groove 20. Other embodiments of the tool,. there are also magazines in which the small parts are kept in a ribbon-like manner and attached to one another, such as a reel. Here, too, the rotation of the tool can be utilized such that the feed wheels drive the small parts in front of the pusher 13. When small mushrooms fluctuate ': ***; the design of the pusher head also needs to be altered to allow for concentrated and reliable displacement of the parts. The rotation of the tool causes • * t *; * J 35 Forwarding the tape one by one and step by step.

* · '5 The feed rollers, for example, are gripped on the ribbon on different sides or comprise a suitably toothed or notched transfer mechanism.

117547 9 ". · Ί»,

In one embodiment of the tool, the mutual movement of the body 9 and the subframe 11 is effected by actuators coupled between the bodies 9 and 11. For example, pneumatic actuators are used. The required energy for the actuators is obtained, for example, through medium channels channeled through the tool mounting 5, which are coupled to the respective channels of the tool. The control is performed either by means of control valves connected to the machine tool or the tool, provided that the attachment means allow the tool to engage electrically in the attachment as well. Through the attachment, rinsing and blowing ducts can also be introduced into the tool, which are used during installation and cleaning of the workpiece.

Interfaces are preferably implemented through a tool mount, thereby avoiding separate, possibly manually coupled, interfaces that are not suited to automatic production.

According to a preferred embodiment, the magazine 14 is replaceable, so that a new fully loaded magazine can be quickly replaced by an empty magazine 14. Usually, a tool magazine has a number of special tools with magazines, and when the magazine is empty, the tool is replaced. Sensing can be used to monitor magazine emptying or control of 20 machine tools to reduce the number of feed movements performed. For various attachments, magazine 14 has apertures 30 and 31 which. In turn, the various fasteners 32 in the flange 18 engage and lock the magazine 14 in place. The opening 30 prevents the spiral: * · *: groove 20.

·· '·;' 25

One or more pre -. ***! assembly tool according to the invention, wherein the other tools may be interchangeable tools, for example, for milling and drilling. which are also provided with the fastening means 2 shown in Figure 1.

30 These tools are used to perform workings on the same workpiece to which the desired small parts are mounted before and / or after machining. It is therefore possible with the same machine tool. · ***; performs both machining and assembly without interruption, either on the same • · *. *. or targeting a different workpiece, if the machine is • • · 35 connected to a production system or to a robotic cell that feeds the work * · **! new workpieces for the machine, whose work stages may also differ. Particularly in the case of the stud, the workpiece is drilled at a percentage of 10 117547, after which the studs are placed in the drills. If necessary, milling is performed in addition to or instead of drilling. The machine tool tool magazine may have a number of different assembly tools, each suitable for mounting a different small part.

5

The machine tool itself, tool magazine, tool changer, spindle assembly and tool attachment, as well as other tools, may be systems of the prior art, but can now be utilized in assembly work thanks to the special tool used. Other systems associated with the machining-10 machine for moving and locking workpieces in place for machining or installation operations may also be well known in the art.

The invention is not limited to the above preferred embodiment, but may vary according to the appended claims.

• «« • t t t 1 1 · · · · · 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 1 * ·· 1 v • 1> • · 1.

··· • · ♦ · ··· • · · · * · 1 e ·· ’·. ·. · • · · 2 • M« ·

Claims (18)

A tool for performing assembly and for attaching small parts (15) to different workpieces, said interchangeable assembly tool (1 - 14, 16 - 32) comprising: a body (9, 11) and means (2) fitted to the body (9, 11). -10) for attachment to machine tools, - feeding means (9, 13, 21) for mounting small parts (15) on the workpiece, 10. magazine means (14, 16-32) traveling with and moving with the tool for storing a plurality of small parts (15), and means (14, 16-32) for feeding in turn the small parts (15) to the feeding means (9, 13, 21), .. ..-: ¾ 15 characterized in that: magazine means (14, 16-32) are either fixedly connected to said assembly tool (1 - 14, 16 - 32), whereby both the tool and, as the installation proceeds, the drainage means (14, 16 - 32) intended for emptying 20 must be replaced with the new loaded magazine means, or removable with said assembly tool (1 - 14, 16-32), where! ·: ·. as the installation progresses, at least the depleted magazine devices • · * (14, 16 - 32) must be replaced with new downloaded magazine devices: ** 25. i (••• f ♦ · A tool according to claim 1, wherein said matching fastening means (2 to 10) comprises standard type fasteners for fastening tools to machine tool spindle units and for use in automatic tool change. • · · * · • · · · · The tool according to claim 1 or 2, wherein the magazine means (14, 16-32) comprise a helical groove (20) extending outwardly from the center line (B) of the assembly tool (1-14, 16-32) and leading to feed f sT: 35 for centrally located members (9, 13, 21) in which the small portions (15) to be mounted on the helical slider (20) are arranged one after the other, with said helical groove (20) also those 117547 I '«? £ 12 "small portions (15) are pushed forward by means of counter members (26-28) which also move along a guide path (23) extending from the outer periphery of the spiral pulley (20) to the inner periphery of said spiral groove (20). allowed to rotate relative to the guide path (23) and 5 to the tool, about said center line (B), however preferably only in the direction in which the spiral groove (20) at the same time moves away from the feed members (9, 13, 21). A tool for performing assembly and connecting small parts (15) to 10 different workpieces, said interchangeable assembly tool (1-14, 16-32) comprising: a body (9, 11) and means (2) adapted to the body (9, 11). - 10) for attaching to machine tools, - feeding means (9, 13, 21) for mounting small parts (15) on 15 workpieces, - magazine means (14, 16 - 32) for storing a plurality of small parts (15) and means (14, 16 - 32) 15) for in turn feeding to the feeding means (9, 13, 21), 20 characterized in that: the magazine means (14, 16-32) comprises a spiral groove (20), which is directed outwardly by the assembly tool (1-14, 16-32). from the center line (B) and leading to the feeding means (9, 13, 21) which are centrally disposed and in which a plurality of small parts (15) to be mounted in a spiral groove (20) are arranged in a row, said spiral groove (20) · "· Small parts (15) front pushing counter members (26-28) which also move along a guide path (23) extending from the outer peripheral region of the spiral groove (20) to its inner periphery region, wherein said spiral groove (20) is allowed to rotate relative to the guide path. (23) and to the tool,... Around said center line (B), however, preferably only in the direction in which the spiral groove (20) at the same time moves away from the feeding means (9, 13, 21), and * · · __ ::: 35 ·: ··: - whereby the rotational movement of the guide track (23) and the helical groove (20) is arranged by briefly rotating 117547 13 the entire tool (1-14, 16-32) about its longitudinal axis (B) the magazine (14, 16-32) is intended to remain in place and not to rotate with the tool, but the guide path (23) is intended to rotate with the tool 5 so that the counter members (26-28) on the guide path (23) also in a spiral groove (20) forwards towards the feeding means (9, 13, 21) and at the same time feeding said small parts (15) forward. The tool according to claim 4, wherein the guide track (23) is a circular arc shaped track disposed centrally with respect to the helical groove (20). The tool of claim 4, wherein the rotation of the guide track (23) 15 is arranged to be executed by machine tool business. The tool according to any one of claims 4 to 6, wherein the magazine means (14, 16 to 32) are arranged to move relative to the feeder members (9, 13, 21) while allowing the new small part (15) to be moved to the feeder members (9,13). , 21) and ready for installation. ? The tool according to any one of claims 4 to 7, wherein the movement of the feed / members (9, 13, 21) for attaching the small parts (15) to the workpiece is,! * | 25 arranged for implementation by machine tool business, where || at the same time, the magazine means (14, 16-32) can retract as a result of impacting the workpiece and recover when the tool is retracted, thereby allowing the new small part (15) to move to the feeding means (9, 13, 21). : * · *: 30 '. * · I || 's 9. A machine tool comprising a business spindle assembly provided with fastening means for fastening a replaceable tool and *:!. * For their movement, and one or more replaceable * · '·; ** tools (1-14, 16-32) for installation: T: 35 and for attaching small parts (15) to different workpieces, where::: ··: this interchangeable assembly tool (1-14, 16-32) comprises: 117547 14 τ body (9, 11) ) and means (2-10) fitted to the frame (9, 11) for attaching to machine tools, feed means (9, 13, 21) for mounting small parts (15) on the workpiece, 5. magazine means (14, 16-32) for storing a plurality of small parts (15) and means (14, 16 to 32) for feeding in turn the small parts (15) to the feeding means (9, 13, 21), wherein the movements of the feeding means (9, 13, 21) 10 of the assembly tool (1 to 14, 16 to 32) workpiece is arranged to be caused by the feed movements of the spindle unit, characterized in that movements of the assembly tool (1-14, 16-32) means (14, 16-32) for in turn feeding small parts (15) to the members (9, 13, 21) of the tool 15 to transfer a small portion (15) to the workpiece, arranged to be caused by rotational movements of the spindle unit. The machine tool of claim 9, wherein it comprises 20 tool magazines for storing one or more interchangeable tools and an automatic exchange system for: changing and moving said tool to a tool. from magazine to fasteners. • # «Λ · * · • · ·! \ 25 The machine tool according to claim 9 or 10, further comprising one or more interchangeable tools for machining workpieces, wherein said both the tooling tool and said assembly tool (1-14, 16-32) comprise members of the same type. (2 to 10) by means of which they are secured to the fastening means of the machine tool V \: 30. ··· • · «« ·· * The machine tool according to any one of claims 9 to 11, wherein the *:! * Assembly tool (1 - 14, 16 - 32) comprises the enclosed maze (14, 16 - 32) which is for storing and feeding in turn the small parts (15) 35 to be mounted to the tool members (9, ·: ··· 13, 21) arranged to supply the small part (15) to the workpiece. 117547 15 The machine tool according to any one of claims 9 to 12, wherein the magazine means (14, 16 to 32) are either fixedly connected to said assembly tool (1 to 14, 16 to 32), whereby both the tool and magazine means 5 (14, 16) - 32) must be replaced with new loaded magazine devices, or detachably said assembly tool (1 - 14, 16 - 32), at least as the installation proceeds, the empty magazine devices (14,16 - 32) must be replaced with new loaded magazine devices. The machine tool according to any one of claims 9 to 13, wherein it is a machine tool for drilling workpieces by means of a tooling tool, which is also arranged to perform the installation of pins (15) on the workpieces by means of the assembly tool (1-14.16-32). 15. A manufacturing and assembly method on a machine tool, comprising: performing machining with respect to the workpiece and using an interchangeable machining tool, and - attaching tools to a machine tool business unit, 20. performing assembly in which small parts (15) are joined to the workpiece using an interchangeable : ·. 14, 16 - 32), in which case this interchangeable assembly work] ·: ·. the tool (1 - 14, 16 - 32) comprises: - a body (9, 11) and means (2 - 10) fitted to the body (9, 11)]] for attachment: · * · ί - feeding means (9, 13, 21) for mounting the small parts (15) on the workpiece, - the magazine means (14, 16-32) traveling with the tool and moving with it: "· For storing the parts (15) and means (14, 16-32) for feeding the parts (15) in turn to the feeding means (9, 13,: .721), and 35 characterized in that: ·: ··· - magazine means (14, 16 - 32) are either fixedly connected to said assembly tool (1 - 14, 16 - 32), whereby both the tool and the magazine means intended for emptying (16) 14, 16-32) is replaced with new loaded magazine means, or removably with said assembly tool (1-14, 16-32), whereby As the na-5 kits progress, the depleted magazine media (14, 16-32) will be replaced with new, loaded magazine media. The method of claim 15, wherein storing said tools in a machine tool tool magazine, performing said attachment using a machine tool automatic change system, and wherein said mounting tool is suitable for both storage in said tool magazine and for processing by said tool system. The method according to claim 15 or 16, wherein movements of the feeder means (9, 13, 21) of the assembly tool (1-14, 16-32) for transferring the small parts (15) to the workpiece are caused by the feed movements of the spindle unit. 32) the movements of the means (14, 16-32) for feeding in turn the small parts (15) in turn to those elements of the tool (9, 13, 21) arranged to transfer the small part (15) to the workpiece are caused by the rotational movements of the spindle unit. ♦ ♦♦ ··· «· · • · ·; .t.t A method according to any one of claims 15 to 17, wherein the machining is carried out by drilling and inserting the pin into the drilled hole. * · · '• · * «• ♦ * • • • • • •» i * · ♦ / * · • * • * • • • • ••••••• • · • «• ·» · «· • · · · · ··· · * • ♦ 117547 17