EP3615255A1

EP3615255A1 - Method for assembling a tool system module, and tool system module produced accordingly

Info

Publication number: EP3615255A1
Application number: EP18723686.4A
Authority: EP
Inventors: Jochen Gruber
Original assignee: Guehring KG
Current assignee: Guehring KG
Priority date: 2017-04-24
Filing date: 2018-04-24
Publication date: 2020-03-04
Also published as: WO2018196920A1; US20200114432A1; DE102017108719A1; CN110785250A

Abstract

The invention relates to a method for assembling a tool system module, having a main body (G3C), which comprises a standard shank, such as a hollow-shank-taper (HSK) shank, and having a functional section (F5Y), such as a tool holder. In order to produce such tool system modules particularly economically, the functional section (F5Y) is paired with a main body (G3C) that is produced on separate production line, which is independent of the design or the production line of the functional section.

Description

Method for assembling a tool system module and accordingly manufactured tool system module

The invention relates to a method for assembling a tool system module, preferably a tool holder, with a standard shaft, such. a hollow shank taper (HSK) shank, having a basic body and a functional portion, such. a tool chuck, and assembled according to this method tool system module.

It is basically, for. B. from the documents DE 196 00 636 A1 or DE 41 17 900 A1, known tools that can not be clamped in chucks due to their volume, such. Modular shell milling cutter modular. In this case, different receiving parts in the form of a

Steep taper and flange with gripper groove are releasably coupled with different roller-shaped cutting parts.

Also come in the tool technology or tool clamping technology

increasingly components are used which are individually adapted to the customer requirements or to the specific machining problem. Tool system modules, such as complete chucks, which are available in a variety of designs

Shrink Chucks, Hydraulic Chucks, Precision Power Chucks,

Straight shank mountings or collet fixtures must be ordered, chuck and tool extensions, reducers, etc. must therefore be produced quickly and economically in a wide variety of sizes and geometries and adapted to the respective machining center.

Now that more and more suitable metal powder are produced (see, for example, the essays "The variety of the powder", published in WB workshop and operation, Issue 9/2016, pp. 1 18 to 121 and "Digital Perspectives", published in WB Workshop and operation, Issue 1 -2/2017, pp 57 to 60), come with the Production of tool clamping systems also generative manufacturing processes for use. Such generative methods are known as stereolithography (SL), 3D printing, fused deposition modeling (FDM), selective sintering, selective laser sintering (SLS), selective laser melting (SLS), laser deposition welding (laser metal deposition, LMD) and

Electron beam melting known. Laser radiation is often used to produce the layers on a metallic basis. Examples of such manufacturing methods are e.g. in the publications DE 10 2013 103 168 B3, WO 2015/166068 A1, EP 1 864 748 B1, DE 10 2015 1 17 590 B3, EP 1 864 748 A1, WO 2013/098192 A1 and WO 2016/045681 A1. In doing so, the speed and flexibility of generative manufacturing are used.

The invention has for its object to provide a new method of manufacturing a tool system module which succeeds in providing tool system modules with a standard shank, such as a die. a hollow shank taper (HSK) shank, having a basic body and a functional portion, such. a tool holder to produce even more economical, faster and with the greatest flexibility.

This object is achieved in that the

Functional section is paired with a main body only when the latter in a separate, the storage enclosing manufacturing line, which regardless of the design or the production line of the

Functional section is, has been made, and preferably at least partially by generative or additive manufacturing, in particular using laser beam melting, such as the selective laser melting process (SLS method).

The new method has the particular advantage that very different

Geometries on the part of the body and the functional section is made regardless of the manufacturing process of each other system module component, which saves not only material and

Machining volume can be minimized, but also any Combinations of system module components in the shortest possible time

can be put together. These system module components can thus be produced optimized production and even independently

be kept in stock so that it is possible to provide tool system modules in any combination in the shortest possible time the customer. The time required for the generative production of the base body does not adversely affect the production time of the tool system module, because generatively manufactured base body in all variants and sizes can already be kept in stock and as needed in the combination required in tool use be paired with a corresponding functional section. A particular advantage of the generative production of the base body lies in the fact that it is largely unaffected by the absolute size of the dimensions. Thus, the parameters of the fabrication process can be determined regardless of whether an extremely large diameter normshaft, e.g. a HSK-A125 for one

Tool holder according to DIN 69893-1 or a standard for

Miniature drilling tools with nominal diameters in the mm range manufactured, are kept unchanged. The production is thereby significantly simplified, because already in the generative production on structural properties at any position of the workpiece can be selectively influenced, so that, for example, separate, the production downstream hardening and heat treatments can be omitted.

The basic body with the Normschaft usually has a large volume and weight and due to the fact that usually a gripper groove is provided for the automated tool change, a mold that regularly brings a large cutting volume with it. With the generative production of the main body thus decoupled from the production of the functional section, the production of the functional section is also greatly simplified because no consideration has to be taken of the material removal and the weight of the basic body.

Advantageous developments are the subject of the dependent claims. It can be of further advantage if the generatively manufactured

System module component (body and / or functional section) is applied or built on a cylindrical blank in 3-D pressure with or without support structure. Because in this way, the blank can be used for the provision of the material for connection to the functional section.

To improve the mechanical properties of the generatively manufactured system module component, it is advantageous if this one

Heat treatment, in particular a thermal aging process, and / or subjected to a thermochemical surface treatment.

It has been found that when the generatively manufactured system module component with the functional section or with the main body

cohesively connected, readily sufficient strength (bending and torque transmission) at sufficiently high

Concentricity can be achieved.

The economics of the manufacturing process, it makes no noticeable crash when the generatively manufactured system module component (body or functional section) is subjected to a mechanical machining to final dimensions.

Preferably, the generatively manufactured system module component or the main body as an essential component steel or hard material.

The invention further provides a tool system module manufactured or assembled according to the method described above. It is characterized in that the base body is produced at least in regions by additive or additive manufacturing, in particular using laser beam melting, such as selective welding Laser melting (SLS) process, manufactured and with the

Functional section is materially connected. Advantageous developments are subject of the dependent claims 8 to 13.

The invention will be explained in more detail with reference to schematic drawings. Show it:

Figure 1 is a perspective view of three different tool system modules in the form of HSK chucks;

Figure 2 is an exemplary compilation of a common assortment of tool system modules;

Figure 3 is an exemplary workshop drawing of a equipped with a steep taper body;

FIG. 4 shows an exemplary workshop drawing of a main body equipped with a hollow shaft cone (HSK);

Figure 5 A is a schematic representation of the invention

Production lines for the main body and for the functional section; and

Figure 5 B is a perspective view of an inventive

assembled tool system module.

FIG. 1 shows by way of example three different tool system modules in the embodiment as tool holders in the form of a HSK chuck with a HSK standard shank 12 and a flange 14

Base body 10 and a functional portion 20-1, 20-2 and 20-3 supported by it. In the example shown, the functional section 20-1 is formed by a hydraulic expansion chuck, the functional section 20-2 by a precision chuck, and the functional section 20-3 by a shrink chuck. Figure 2 illustrates the variety in which such tool system modules are offered today. Functional sections of the same design are manufactured with clamping shafts of different shapes, including standard steep taper shanks. In addition, these system modules come in various sizes on the part of the standard (HSK or steep taper) and on the part of the

Function section for clamping tools of all kinds

Diameter used and manufactured accordingly. Next

FIG. 2 shows, by way of example, cylindrical shank receptacles 20-4, for example, the "Weldon7" whistle-notch "design, collets 20-5 and shrink chucks / shrink extensions 20-6.

Figures 3 and 4 show that not only the functional portion 20 is designed relatively complex, but that the base body 10 - even if the shaft is subject to standardization - must be made only with a considerable manufacturing effort. One recognizes the extensive dimensioning with very narrow tolerance fields not only in the area of the standard 12, but also in the region of the adjoining flanges 14 with gripper groove 16,

Coding bore 17 and indexing 18th

To be able to produce the tool system modules, in particular tool holders, even more economically, faster and with even greater flexibility, the method according to the invention is characterized in that the

Functional section 20 is paired with a base body 10 only when the latter has been manufactured in a separate manufacturing line, which is independent of the design or the production line of the functional section. This is shown schematically in FIGS. 5A and 5B:

The production lines for the main body and for the functional section are separate and independent of each other. So they become the basic body

different shape and size - indicated by the matrix with the columns 1 to n and the lines A to Z decoupled from the production of the functional sections 20 - also in different types and sizes - made. The production can also be carried out according to a multi-dimensional matrix. The individually manufactured system module components 10, 20 can also be temporarily stored on call.

Depending on the configuration in which the customer desires the system module, the matching basic body and functional sections are paired and firmly joined together, for example glued or welded. In FIG. 5, for example, the base body G3C is paired with the functional section F5Y, preferably connected in a materially bonded manner.

In this way, different geometries on the part of the

Basic body and the functional section each independent of

Manufacturing process of the other system module component are produced. Thus, not only material is saved and cutting volume is minimized, but also any combinations of the system module components can be put together in a very short time. These system module components can thus be produced optimized production technology and even kept in stock independently of each other, so that it is possible to provide tool system modules in any combination in the shortest possible time the customer.

With the method according to the invention, it is possible to produce all standard tool system modules in which standard shanks are paired with a wide variety of functional sections, such as, for example, with a tool carrier shaft, a tool shank or a tool chuck in the

Design as hydraulic expansion chuck, shrink chuck, power chuck, cylindrical shank holder "Weldon'TWhistle-Notch" or collet holder.

According to an advantageous embodiment, at least the main body 10, which may comprise steel or hard material as an essential component, is produced at least in regions by additive or additive manufacturing, in particular using laser beam melting, such as the selective laser melting process (SLS process). It can be any known or in developing type of additive manufacturing, as referred to as stereolithography (SL), 3D printing, fused deposition modeling (FDM), selective sintering, selective laser sintering (SLS), selective laser melting (SLS), laser deposition welding (laser metal - Deposition, LMD) and electron beam melting are known.

The generatively manufactured system module component (main body 10 and / or functional portion 20) can also be applied to a cylindrical blank in 3-D printing with or without support structure. Advantageously, the generatively manufactured system module component (base body 10 and / or functional portion 20) is then subjected to a heat treatment, in particular a hot aging process, and / or a thermochemical

Subjected to surface treatment.

The generatively manufactured system module component, that is to say the base body 10 and / or the functional section 20, is preferably machined to its final dimension.

The invention thus provides a method for assembling a

Tool system module with a standard shaft, such as a. one

Hollow shaft taper (HSK) shaft, comprising basic body and a

Functional section, such as a tool holder. In order to produce such tool system modules particularly economically, the functional section is paired with a base body, which in a separate production line, which regardless of the design or the production line of the

Function section is, is manufactured.

Claims

claims

1 . Method for assembling a tool system module, in particular a tool holder, with a standard shaft, such as a one

Hollow shaft taper (HSK) shaft, comprising basic body and a

Functional section, such as a tool chuck, thereby

characterized in that the functional portion (20) is paired with a base body (10), which is in a separate, enclosing the storage

Production line, which regardless of the design or the

Production line of the functional section (20), at least partially by generative or additive manufacturing, in particular using laser beam melting, as the selective laser melting process (SLS method), is made.

2. The method according to claim 1, characterized in that at least the

Base body (10) is applied to a cylindrical blank () in 3-D pressure with or without support structure.

3. The method according to claim 1 or 2, characterized in that at least the main body (10) of a heat treatment, in particular a

Warm Auslagerungsprozess, and / or a thermochemical

Surface treatment is subjected.

4. The method according to any one of claims 1 to 3, characterized in that the base body (10) with the functional portion (10) is integrally connected.

5. The method according to claim 4, characterized in that at least the

generatively manufactured base body (10) is subjected to a mechanical machining to final dimensions.

6. The method according to any one of claims 1 to 5, characterized in that the base body (10) as an essential component steel or hard material.

7. Tool system module, in particular tool holder, with a standard shaft, such. a hollow shank taper (HSK) shank, having a basic body and a functional portion, such. one

Werkzeugspannaufnahme, characterized in that the base body (10) at least partially by generative or additive manufacturing,

in particular using laser beam melting, such as the selective laser melting process (SLS method), manufactured and with the

Function section (20) is integrally connected.

8. Tool system module according to claim 7, characterized in that the base body (10) is mounted on a cylindrical blank in the 3-D pressure with or without support structure.

9. Tool system module according to claim 7 or 8, characterized in that the base body (10) of a heat treatment, in particular a

Warm Auslagerungsprozess, and / or a thermochemical

Surface treatment is subjected.

10. Tool system module according to one of claims 7 to 9, characterized

characterized in that the base body (10) is subjected to a mechanical machining to final dimensions.

1 1 .Tools system module according to one of claims 7 to 10, characterized

characterized in that the main body (10) has as an essential component steel or hard material.

12. Tool system module according to one of claims 7 to 1 1, characterized in that the base body (10) adjoins the standard shank (12) flange (14) with gripper groove (16), Codierbohrung (17) and Indexierungsnut (18 ) having.

13. Tool system module according to one of claims 7 to 12, characterized

in that the functional section (10) forms a tool carrier shank, a tool shank or a tool chuck receptacle in the configuration as a hydraulic expansion chuck, shrink chuck, power chuck, cylindrical shank receptacle "WeldonY'Whistle-Notch" or collet receptacle.