Guide bushing system

Abstract

The invention relates to a guide bushing system (100) comprising a guide bushing (10) configured to receive a guide clamp (20), a plurality of guide clamps (20) of different types which can be introduced into the guide bushing (10), a drive configured to carry out an axial movement of at least one of the guide clamps (20) within the guide bushing (10), and a plurality of spindle caps (40) each adapted to at least one type of one of the plurality of guide clamps (20), wherein each spindle cap (40) of the plurality of spindle caps (40) can be connected to the guide bushing (10) for cooperation with the guide clamp (20) to which the respective spindle cap (40) is adapted.

Description

[0001] GUIDE BUSHING SYSTEM

[0002] The invention relates to a guide bushing. In particular, the invention relates to a guide bushing configured to receive a guide pliers, comprising a drive acting on the guide pliers and configured to execute an axial movement of a guide pliers within the guide bushing, a guide pliers insertable into the guide bushing, and a spindle cap adapted to the design of the guide pliers and connectable to the guide bushing. The design relates to the configuration of the guide pliers as a pull-type guide pliers, a push-type guide pliers, a double-cone guide pliers, or a standard guide pliers.

[0003] Guide bushings and collets, known for example from DE 10 2017 105 872 A1, DE 10 2014 018 695 4, and DE 10 2017 123 811 B3, are used on Swiss-type lathes to hold, guide, and support the bar stock to be machined during the machining process. This allows very long and slender workpieces to be manufactured with tight machining tolerances. Fluctuations in the diameter of the bar stock are compensated for by the guide bushings, so that bars of different diameters can generally be machined with the same guide bushing.

[0004] In practice, however, it often happens that different types of collets are required for machining workpieces, so that the entire guide bush has to be removed and replaced with another guide bush that has a guide collet of the desired design.

[0005] The disadvantage of this approach is the high material, time and labor expenditure required for maintaining and replacing the guide bush.

[0006] The object of the invention is therefore to create a simply constructed and universally applicable guide bushing that allows use with guide pliers of different designs. This object is achieved according to the invention by the guide bushing system having the features of claim 1. The subclaims describe advantageous embodiments of the invention.

[0007] The basic idea of ​​the invention is to create a guide bushing system with a guide bushing that dispenses with special adaptations for accommodating a guide clamp, so that, in principle, any of a plurality of differently designed guide clamps can be inserted into the guide bushing of the system according to the invention. At the same time, a plurality of spindle caps are provided, each adapted to at least one type of one of the plurality of guide clamps. Each spindle cap is connectable to the guide bushing and, when connected to the guide bushing, cooperates with the guide clamp to which the spindle cap is adapted.

[0008] Thus, the spindle caps of the system designed according to the invention have run-on chamfers specifically adapted to the guide pliers type. For example, when using a double-cone guide pliers, a run-on chamfer is required on the side of the spindle cap facing the guide bushing, whereas when using a pull-type guide pliers, a run-on chamfer is required on the side of the spindle cap facing away from the guide bushing.

[0009] If necessary, the system also comprises a plurality of actuators each adapted to at least one type of one of the plurality of guide clamps, which actuators can also be exchanged as required and connected on the one hand to cooperate with the drive and on the other hand to cooperate with the guide clamp to which the respective actuator is adapted.

[0010] According to the invention, a guide bushing system is proposed with a guide bushing configured to receive a guide pliers, a plurality of guide pliers of different designs that can be inserted into the guide bushing, a drive configured to carry out an axial movement of at least one of the guide pliers within the guide bushing, and a plurality of spindle caps each adapted to at least one design of one of the plurality of guide pliers, wherein each spindle cap of the plurality of spindle caps can be connected to the guide bushing for cooperation with the guide pliers to which the respective spindle cap is adapted.

[0011] The guide bushing system is designed so that each guide clamp of the system can be inserted into the guide bushing and activated using a spindle cap designed to match the design of the guide clamp. Although the spindle caps can be connected to the guide bushing using different connecting means, it is preferred that the spindle caps be connected to the guide bushing using an identical connecting means. The connecting means can be designed as a standalone element or be a device formed on the guide bushing and / or the guide clamp, e.g., a thread.

[0012] Preferably, a plurality of actuators each adapted to at least one design of one of the plurality of guide tongs is further provided, wherein each actuator is configured to cooperate with the drive and with the guide tongs to which the respective actuator is adapted.

[0013] The plurality of guide pliers preferably comprises at least one pull guide pliers and / or at least one push guide pliers and / or at least one double-cone guide pliers and / or one standard guide pliers. Specifically, it is provided that the plurality of guide pliers comprises at least two guide pliers of different designs selected from the group of guide pliers containing a pull guide pliers, a push guide pliers, a double-cone guide pliers, and a standard guide pliers. In particular, it is provided that the plurality of guide pliers comprises a pull guide pliers and a push guide pliers, or a double-cone guide pliers, or a standard guide pliers. Alternatively, it is provided that the plurality of guide pliers comprises a double-cone guide pliers and a pull guide pliers, or a push guide pliers, or a standard guide pliers.As a further alternative, it is provided that the plurality of guide pliers has a pressure guide pliers and a double-cone guide pliers or a tension guide pliers or a standard guide pliers. Finally, it is alternatively provided that the plurality of guide pliers has a standard guide pliers and a pressure guide pliers or a double-cone guide pliers or a tension guide pliers. Accordingly, it is particularly preferably provided that the plurality of actuators has at least one tension piece and / or a pressure piece. Even in the case of a standard guide pliers, a tension piece is preferably provided, although the inner diameter remains unchanged when using the standard guide pliers, i.e. during operation of the guide bush, and does not undergo any radial adjustment.This is ensured by inserting, in particular screwing in, and fixing the standard guide pliers into the guide bush to a predetermined depth and thus a predetermined inner diameter, and in particular by deactivating the drive.

[0014] It is particularly preferred that each actuator of the plurality of actuators is detachably connected to the drive.

[0015] Finally, each spindle cap preferably has a thread that threadably engages with a thread provided on the guide bushing. Such a design enables secure and precisely positioned attachment of the spindle cap to the guide bushing and rapid replacement of the spindle cap, the guide clamp, and, if applicable, the actuator.

[0016] The invention will be explained in more detail below with reference to a particularly preferred embodiment shown in the accompanying drawings. They show:

[0017] Fig. 1 shows a particularly preferred embodiment of a guide bushing which is equipped with a double-cone guide pliers;

[0018] Fig. 2 the particularly preferred guide bushing, which is equipped with a standard guide pliers; and

[0019] Fig. 3 shows the particularly preferred guide bushing, which is equipped with a pull-type guide pliers. The figures thus show, as a whole, a guide bushing system 100 with a guide bushing 10 configured to receive a respective guide pliers 20. The guide pliers 20 received by the guide bushing 10 in the figures are selected from a plurality of guide pliers 20 of different designs that can be inserted into the guide bushing 10. In Fig. 1, the guide pliers are designed as a double-cone guide pliers, in Fig. 2 as a standard guide pliers, and in Fig. 3 as a pull-type guide pliers.

[0020] The guide bushing has a drive 30 arranged within the guide bushing 10 for carrying out an axial movement of at least one of these guide clamps 20, namely the double-cone guide clamp shown in Fig. 1 and the tension guide clamp shown in Fig. 3. Depending on the design of the guide clamp 20 inserted into the guide bushing 10, the drive 30 has a tension or pressure piece 50 that can be detachably connected to the drive 30. Thus, it can be seen in Fig. 1 that the drive 30 has a pressure piece 50 acting on the double-cone guide clamp 20, whereas the drive 30 in Fig. 3 is equipped with a tension piece 50 acting on the tension guide clamp 50.

[0021] In the case of the standard guide pincer shown in Fig. 2, the drive is non-functional because the standard guide pincer has an inner diameter that remains constant during operation of the guide bush. Only a suitable fixation ensures that the standard guide pincer cannot be axially displaced.

[0022] Finally, it can be seen in the figures that a plurality of spindle caps 40 are provided, each adapted to at least one design of one of the plurality of guide tongs 20, wherein each spindle cap 40 of the plurality of spindle caps 40 can be connected to the guide bushing 10 for cooperation with the guide tongs 20 to which the respective spindle cap 40 is adapted. In particular, it can be seen in the figures that the spindle cap 40 used in Fig. 1 for the double-cone guide tongs differs from the spindle cap 40 used in Fig. 2 for the standard guide tongs and in Fig. 3 for the pull-type guide tongs. In each case, the spindle cap 40 has a thread which is screwably connected to a thread provided on the guide bushing 10. In the case of the double-cone guide tongs shown in Fig. 1 and the guide tongs shown in Fig.The tension guide pliers shown in Fig. 3 have a starting bevel adapted to the respective guide pliers type. In the case of the standard guide pliers shown in Fig. 2, the spindle cap 40 forms a contact surface for the standard guide pliers that limits the axial penetration depth into the guide bushing 10.

Claims

CLAIMS 1. Guide bushing system (100) with a guide bushing (10) designed to receive a guide tong (20), a plurality of guide tongs (20) of different designs that can be inserted into the guide bushing (10), a drive (30) designed to carry out an axial movement of at least one of the guide tongs (20) within the guide bushing (10), and a plurality of spindle caps (40) each adapted to at least one design of one of the plurality of guide tongs (20), wherein each spindle cap (40) of the plurality of spindle caps (40) can be connected to the guide bushing (10) for cooperation with the guide tong (20) to which the respective spindle cap (40) is adapted.

2. Guide bushing system (100) according to claim 1, characterized by a plurality of actuators (50) each adapted to at least one type of one of the plurality of guide tongs (20), wherein each actuator is configured to cooperate with the drive (30) and with the guide tongs (20) to which the respective actuator (50) is adapted.

3. Guide bushing system (100) according to one of the preceding claims, characterized in that the plurality of guide pliers (20) has at least one pulling guide pliers.

4. Guide bushing system (100) according to one of the preceding claims, characterized in that the plurality of guide pliers (20) has at least one pressure guide pliers.

5. Guide bushing system (100) according to one of the preceding claims, characterized in that the plurality of guide pliers (20) has at least one double-cone guide pliers.

6. Guide bushing system (100) according to one of the preceding claims, characterized in that the plurality of guide tongs (20) comprises at least one standard guide tong.

7. Guide bushing system (100) according to claim 2 and 3, characterized in that the plurality of actuators (50) has at least one tension piece.

8. Guide bushing system (100) according to claim 2 and 4 or 5, characterized in that the plurality of actuators (50) has at least one pressure piece.

9. Guide bushing system (100) according to claim 2, characterized in that the plurality of guide pliers comprises at least two guide pliers of different designs selected from the group of guide pliers comprising a pull guide pliers, a push guide pliers, double-cone guide pliers and a standard guide pliers.

10. Guide bushing system (100) according to one of claims 2 to 9, characterized in that each actuator (50) of the plurality of actuators (50) is detachably connectable to the drive (30).

11. Guide bushing system (100) according to one of the preceding claims, characterized in that each spindle cap (40) has a thread which is screwably arranged with a thread provided on the guide bushing (10).

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