Quick-change system, rotary switch table with such a quick-change system, and use

Description

[0001] The invention relates to a quick-change system comprising at least one receiving part and at least one tool changer, wherein the receiving part has at least one receiving opening for receiving one tool changer. The invention further relates to a rotary indexing table with a quick-change system and its use.

[0002] Quick-change systems of the type mentioned above are known, for example, from DE 103 04 507 D1. The tool-changing system described therein is designed for the detachable coupling of tools to handling devices. It comprises a tool-changing head, a tool-changing adapter, and locking means for locking the tool-changing head to the tool-changing adapter. The locking means include an elastically deformable actuating element which, in the locked state, applies a spring-loaded bias to the locking elements such that the locking elements are held in their respective locked positions.

[0003] CN 208 976 912 U describes a quick-change system according to the preamble of claim 1 for a deep-hole drilling machine, comprising at least one mounting part and at least one interchangeable tool. DE 101 54 876 C1 discloses a tool-changing system for the detachable coupling of tools to handling devices.

[0004] The object of the present invention is to provide an alternative quick-change system that requires little installation space. Furthermore, it is an object of the invention to specify a location and use for such a quick-change system.

[0005] The task is solved for the quick-change system by including at least one mounting part and at least one changing tool, by the receiving part has at least one receiving opening for receiving one interchangeable tool each, wherein at least one ball detent for temporarily fixing the interchangeable tool to the A receiving part is provided, wherein the ball pressure piece comprises a sleeve closed on one side in which a spring-loaded pressure ball is arranged, wherein the pressure ball can be manually engaged and disengaged from a ball receiving opening on the change tool, wherein the sleeve closed on one side of the ball pressure piece has an axis of symmetry S, wherein the pressure ball is displaceable along the axis of symmetry S, and wherein the ball receiving opening has a central axis M which, in a locked state of the receiving part and the change tool, runs parallel to the axis of symmetry S, and wherein the axis of symmetry S and the central axis M run parallel at a distance A of 1 to 3.5 mm in the locked state.

[0006] The quick-change system is particularly space-saving and can be used without any additional tools. Manual locking and unlocking of the tool is possible because the holding forces between the tool and the workpiece can be controlled manually. This allows machines with such quick-change systems to be retooled quickly and requires minimal personnel.

[0007] A ball receiving opening is understood to be, for example, a recess, a blind hole, a cutout, a through bore, a notch, a groove and the like, which is dimensioned in such a way that a pressure ball arranged accordingly can be engaged.

[0008] By adjusting the distance A between the axis of symmetry S and the central axis M in the locked position, the holding forces perpendicular to the spring action between the interchangeable tool and the workpiece can be set to an optimally manageable level. The smaller the distance A, the lower the holding force. Holding forces in the range of 5 to 50 N can be set.

[0009] The sleeve of the ball plunger, which is closed on one side, is dimensioned in the area of ​​its open side in such a way that the plunger ball is securely held in the sleeve.

[0010] The receiving part and the changing tool are preferably lockable in such a way that the changing tool can be inserted into the receiving opening in a locking direction which runs perpendicular to the axis of symmetry S.

[0011] It has proven advantageous to have at least one tool stop on the interchangeable tool, which allows the vertical position of the tool to be fixed in the receiving opening. Preferably, two tool stops are provided, which reliably prevent the tool from moving within the receiving opening.

[0012] The ball receptacle preferably has a contact area which, in the engaged state, touches the pressure ball, wherein the contact area is provided with an edge chamfer. An edge chamfer in the range of 0.2 to 0.4 mm has proven effective. The edge chamfer specifies the length of the distance between each of the two formed chamfer edges and the original (and removed during chamfering) edge of the ball receptacle.

[0013] Preferably, at least one centering pin is provided on the mounting part, which can be inserted into a centering opening on the tool changer. Alternatively, at least one centering pin is provided on the tool changer, which can be inserted into a centering opening on the mounting part. This prevents the mounting part from rotating relative to the tool changer and reliably fixes the tool changer in the desired installation position.

[0014] The problem is further solved by providing a rotary indexing table comprising at least one quick-change system according to the invention, in particular at least two quick-change systems according to the invention.

[0015] In particular, the rotary indexing table according to the invention has proven to be suitable for the assembly of rolling bearings or plain bearings, or for the machining of rolling bearing or plain bearing components. Furthermore, the use of such a rotary indexing table for the assembly or machining of engine components has also proven advantageous.

[0016] The Figures 1a to 6 The following are intended to illustrate, by way of example, the quick-change systems according to the invention and a rotary indexing table that can be equipped with them. For example, Figure 1a a first quick-change system in three-dimensional view, Figure 1b the first quick-change system according to Figure 1a in longitudinal section, Figure 1c the first quick-change system according to Figure 1a Figure 2 shows a cross-section through the ball pressure pieces, Figure 2 a second quick-change system in three-dimensional view, Figure 3 the second quick-change system according to Figure 2in a three-dimensional view from below in partial representation, Figure 4 shows a section through one of the ball pressure pieces of the second quick-change system according to the Figures 2 and 3 Figure 5 shows an example of a ball pressure piece with a snap-in pressure ball in an enlarged sectional view, and Figure 6 shows a rotary indexing table.

[0017] The Figures 1a to 1c show a first quick-change system 1 in a three-dimensional view, wherein the Figure 1b the first quick-change system 1 according to Figure 1a in longitudinal section and Figure 1c the first quick-change system 1 according to Figure 1a in cross-section through the ball pressure pieces 5. Same reference numerals in the Figures 1a to 1c indicate identical elements.

[0018] The first quick-change system 1 comprises a mounting part 2 and a changing tool 3, wherein the mounting part 2 has a receiving opening 4 for receiving the changing tool 3. Furthermore, the mounting part 2 has two ball detents 5 (compare Figure 1c ) for temporarily fixing the interchangeable tool 3 to the receiving part 2. Each ball detent 5 comprises a sleeve 6 closed at one end (see Figure 5 ), in which a spring-loaded pressure ball 7 is arranged. The pressure balls 7 can each be manually engaged and disengaged from a ball-receiving opening 8 on the change tool 3, for example to quickly change to a change tool 3' of a different dimension (compare Figures 2 to 4) or to be able to perform a changeover tool designed for a different machining operation. To secure the changeover tool 3 against rotation, a centering pin 9 is provided on the mounting part 2, onto which a centering opening 10 on the changeover tool 3 can be slid. The changeover tool 3 is manually moved towards the mounting part 2 in the locking direction E to engage with the mounting part 2. The changeover tool stops 3a, 3b provided on the changeover tool 3 (see below) Figure 1b ) are brought into position above and below the receiving part 2 and the changing tool 3 is pushed into the receiving opening 4 until the two pressure balls 7 snap into the ball receiving openings 8 and the centering pin 9 comes to rest in the centering opening 10.

[0019] The Figure 2Figure 1 shows a second quick-change system 1' in a three-dimensional view. The second quick-change system 1 comprises a receiving part 2 and a changing tool 3', the receiving part 2 having a receiving opening for receiving the changing tool 3'. Furthermore, the receiving part 2 has two ball detents 5 for temporarily fixing the changing tool 3' to the receiving part 2, with only one of the ball detents 5 being shown and visible in the partial section. The pressure balls 7 (compare Figure 3 ) are each in a ball-bearing opening 8 (compare Figure 3 ) can be manually locked into and unlocked from the interchangeable tool 3', for example to quickly switch to a differently dimensioned interchangeable tool 3 (compare Figure 1a) or to be able to perform a changeover tool designed for a different machining operation. To secure the changeover tool 3' against rotation, a centering pin 9 is provided on the mounting part 2, onto which a centering opening 10 on the changeover tool 3' can be slid. To lock the changeover tool 3' with the mounting part 2, it is manually moved towards the mounting part 2 in the locking direction E. The changeover tool stops 3a', 3b' provided here on the changeover tool 3' are brought into contact above and below the mounting part 2, and the changeover tool 3' is pushed into the mounting opening until the two pressure balls 7 (compare Figure 3 ) snap into the ball receptacle openings 8 and the centering pin 9 comes to rest in the centering opening 10.

[0020] Figure 3 The second quick-change system 1' shows according to Figure 2Three-dimensional view from below, shown in partial representation. The same reference symbols as described above in Figure 2 denote identical elements.

[0021] Figure 4 shows a section through one of the ball pressure pieces 5 of the second quick-change system 1' according to the Figures 2 and 3 . Same reference symbols as above to Figure 2 or 3 Described elements are identical.

[0022] The Figure 5Figure 1 shows an enlarged cross-sectional view of a possible ball pressure piece 5. The sleeve 6, closed at one end, is visible, in which a pressure ball 7 is arranged and spring-mounted by means of a spring element 11. The sleeve 6 has an axis of symmetry S, and the pressure ball 7 is displaceable along this axis. A helical compression spring is used as the spring element 11, but other spring elements, such as conical springs, disc springs, elements made of an elastomer, and the like, can also be used.

[0023] Above the ball pressure piece 5, a section of an interchangeable tool 3 is visible, here in the area of ​​a ball receiving opening 8 in the form of a blind hole. The ball receiving opening 8 has a central axis M which, in a locked state of receiving part 2 and interchangeable tool 3, as shown here, runs parallel to the axis of symmetry S.

[0024] The axis of symmetry S and the central axis M run parallel to each other at a distance A of 1 to 3.5 mm when the tool is engaged. The selection of this distance A directly influences the holding force between the tool 3 and the mounting part 2 when engaged. At least in the contact area 8a, where an edge of the ball receptacle 8 would come into contact with the surface of the pressure ball 7, the ball receptacle 8 has a chamfered edge. The size of this chamfer also influences the holding force between the tool 3 and the mounting part 2 when engaged.

[0025] The specific design for the holding force required in each application can be determined through a few tests.

[0026] The Figure 6Figure 1 shows a rotary indexing unit 110 with a rotary indexing table 100. The rotary indexing table 100, comprising a holder 12, is arranged to rotate about a rotational axis R. A plurality of first quick-change systems 1 (for example, according to [reference to figure]) are located on the rotary indexing table 100. Figure 1a ), whose receiving parts 2 are attached to the holder 12. The receiving parts 2 can optionally be integrally formed with the holder 12. Converting the rotary indexing table 100 to a different tool changer 3 while keeping the receiving part 2 the same is efficient and can be carried out entirely manually, i.e., without the use of additional assembly tools, with minimal setup time. Reference symbol list

[0027] 1, 1'Quick-change system 2Mounting part 3, 3'Change tool 3a, 3b, 3a', 3b'Change tool stop 4Mounting opening 5Ball pressure piece 6Sleeve 7Pressure ball 8Ball mounting opening 8aContact area 9Centering pin 10Centering opening 11Spring element 12Holder 100Rotary indexing table 110Rotary indexing table unit ADistance SAxis of symmetry MCenter axis EDetent direction RAxis of rotation

Claims

1. A quick-change system (1, 1') comprising at least one receiving part (2) and at least one interchangeable tool (3, 3'), wherein - the receiving part (2) has at least one receiving opening (4) for receiving a respective interchangeable tool (3, 3'), wherein at least one ball plunger (5) is provided for temporarily fixing the interchangeable tool (3, 3') to the receiving part (2), wherein the ball plunger (5) comprises a sleeve (6) that is closed on one side, in which a spring-mounted pressure ball (7) is arranged, wherein the pressure ball (7) is manually engageable in and disengageable from a ball-receiving opening (8) on the interchangeable tool (3, 3'), wherein the sleeve (6) that is closed on one side has an axis of symmetry (S), wherein the pressure ball (7) is displaceable along the axis of symmetry (S), and wherein the ball-receiving opening (8) has a central axis (M) extending parallel to the axis of symmetry (S) in an engaged state of the receiving part (2) and the interchangeable tool (3, 3'), characterised in that the axis of symmetry (S) and the central axis (M) extend parallel at a distance (A) of 1 to 3.5 mm in the engaged state.

2. The quick-change system (1, 1') according to claim 1, wherein the receiving part (2) and the interchangeable tool (3, 3') are lockable to one another such that the interchangeable tool (3, 3') can be inserted into the receiving opening (4) in an engagement direction (E) extending perpendicular to the axis of symmetry (S).

3. The quick-change system (1, 1') according to one of claims 1 or 2, wherein the ball-receiving opening (8) has a contact area (8a) that contacts the pressure ball (7) in the engaged state, wherein the contact area (8a) is provided with a chamfer.

4. The quick-change system (1, 1') according to one of claims 1 to 3, wherein at least one centring pin (9) is provided on the receiving part (2), which is insertable into a centring opening (10) on the interchangeable tool (3, 3') or wherein at least one centring pin (9) is provided on the interchangeable tool (3, 3'), which is insertable into a centring opening (10) on the receiving part (2).

5. A rotary indexing table (100) comprising at least one quick-change system (1, 1'), in particular at least two quick-change systems (1, 1') according to one of claims 1 to 4.

6. Use of the rotary indexing table (100) according to claim 5 for mounting rolling bearings or slide bearings or for machining rolling bearing or slide bearing components, as well as for mounting or machining engine components.