WO2014126525A1 - A tool holder arrangement - Google Patents

A tool holder arrangement Download PDF

Info

Publication number
WO2014126525A1
WO2014126525A1 PCT/SE2014/050155 SE2014050155W WO2014126525A1 WO 2014126525 A1 WO2014126525 A1 WO 2014126525A1 SE 2014050155 W SE2014050155 W SE 2014050155W WO 2014126525 A1 WO2014126525 A1 WO 2014126525A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool holding
shaft
diameter
outer sleeve
sleeve
Prior art date
Application number
PCT/SE2014/050155
Other languages
French (fr)
Inventor
Max Claesson
Original Assignee
Husqvarna Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Husqvarna Ab filed Critical Husqvarna Ab
Publication of WO2014126525A1 publication Critical patent/WO2014126525A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/005—Cylindrical shanks of tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/11—Retention by threaded connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/113—Retention by bayonet connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
    • F16D1/112—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts comprising torque-transmitting surfaces, e.g. bayonet joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/02—Features of shanks of tools not relating to the operation performed by the tool
    • B23B2231/0208—Bores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/02—Features of shanks of tools not relating to the operation performed by the tool
    • B23B2231/028—Lugs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2265/00—Details of general geometric configurations
    • B23B2265/32—Polygonal
    • B23B2265/328—Octagonal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/102—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via polygon shaped connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

The present invention relates to a tool holding arrangement (1) comprising a tool holding device (2), an outer sleeve (3) and a shaft (4) connectable to a tool motor, The tool holding device (2) comprises a first torque-transmitting means (6) and an outer thread (7), the shaft (4) comprises a second torque-transmitting means (8), the outer sleeve (3) comprises an inner thread (9). The treads and the torque-transmitting means are arranged to engage each other. The shaft (4) comprises a first and second shaft flange (10, 11) with a first and second diameter (D1, D2), these flanges (10, 11) being separated by a shaft groove (12) with a third diameter (D3). The outer sleeve (3) has a minimum inner diameter (Dimin) which exceeds at least one of the first and second diameter (D1, D2). The arrangement (1) further comprises a first and second sleeve flange part (13, 14) which are releasably mountable to the outer sleeve (3). When mounted they have a maximum flange part inner diameter (Dfmax) that falls below both the first and second diameter (D1, D2), but exceeds the third diameter (D3).

Description

A TOOL HOLDER ARRANGEMENT TECHNICAL FIELD
The present invention relates to a tool holding arrangement comprising a tool holding device, a freely rotatable outer sleeve and a rotatable shaft which is at least connectable to a tool driving power source. The tool holding device comprises a first torque-transmitting means and an outer thread and the shaft comprises a second torque-transmitting means. The outer sleeve comprises an inner thread. The torque-transmitting means are arranged to engage each other and the threads are arranged to engage each other when the tool holding device is connected to the shaft.
BACKGROUND ART
Construction machines are for example used when renovating, reconstructing and extending buildings. Drill motors with annular core bits are normally used for drilling holes, for example for piping in floors and walls of buildings. Tool holders are used for connecting a tool, such as a drill, to the core bit, where the tool is attached to the tool holder; for example by means of welding.
The connection between a core bit and a tool holder is often made by means of threads, where the tool holder is screwed to the core bit. However, such an arrangement has disadvantages such as jamming of the threads. Therefore, other types of connections between a core bit and a tool holder have been proposed.
In US 2004/0154838 a tool holder is arranged for mounting to a core bit by means of coaxially arranged corresponding guide members, splines and conical surfaces which engage each other. In order to secure the mounting, a threaded flange on the core bit is screwed to corresponding threads on the tool holder.
However, there is still a need for a less complicated and easily managed tool holding arrangement for mounting and securing a tool holder to a core bit. SUMMARY
One object of the invention is to provide a tool holding arrangement comprising a tool holding device, a freely rotatable outer sleeve and a rotatable shaft which is at least connectable to a tool driving power source. The tool holding device comprises a first torque-transmitting means and an outer thread, and the shaft comprises a second torque-transmitting means. The outer sleeve comprises an inner thread. The torque-transmitting means are arranged to engage each other and the threads are arranged to engage each other when the tool holding device is connected to the shaft.
The shaft comprises a first circumferential shaft flange with a first diameter and a second circumferential shaft flange with a second diameter. The shaft flanges are separated by a circumferential shaft groove with a third diameter. The outer sleeve has a minimum sleeve inner diameter which exceeds at least one of the first diameter and the second diameter. The tool holding arrangement further comprises a first sleeve flange part and a second sleeve flange part, where the sleeve flange parts are mountable to, and dismountable from, the outer sleeve. When the sleeve flange parts are mounted to the outer sleeve, they have at least one maximum flange part inner diameter that falls below both the first diameter and the second diameter, but exceeds the third diameter.
According to an example, when the tool holding device is to be connected to the shaft, the shaft is positioned to run through the outer sleeve and the sleeve flange parts are mounted to the outer sleeve such that the sleeve flange parts are positioned between the first circumferential shaft flange and the second circumferential shaft flange. This prevents the outer sleeve from coming off the shaft.
According to another example, the tool holding arrangement further comprises a first spring washer and a second spring washer. The spring washers are sandwiched between the corresponding sleeve flange parts and the outer sleeve when the sleeve flange parts are mounted to the outer sleeve. According to another example, when the tool holding device is connected and axially locked to the shaft, the threads are engaged such that the spring washers abuts a first side of the first circumferential shaft flange. In the above case, each spring washer may comprise at least one protrusion, each protrusion being arranged to resiliently engage a plurality of corresponding recesses arranged along the first side of the first circumferential shaft flange. This arrangement provides a click-lock function with distinct locking positions when the protrusions engage corresponding recesses.
Other examples are disclosed in the dependent claims.
Many advantages are provided by means of the present invention. Mainly, a less complicated and easily managed tool holding arrangement for mounting and securing a tool holder to a core bit is provided..
BRIEF DESCRIPTION OF THE DRAWINGS
In the following, the invention will be described in more detail with reference to preferred embodiments and the appended drawings, where: shows a perspective view of an assembled tool holding arrangement; shows a perspective view of a partly disassembled tool holding arrangement; shows an exploded perspective view of the tool holding arrangement; shows a perspective view of a rotatable shaft; shows a perspective view of spring washers; shows a first perspective view of a tool holding device;
Figure 7 shows a second perspective view of the tool holding device; Figure 8 shows a first perspective view of a rotatable outer sleeve;
Figure 9 shows a second perspective view of the rotatable outer sleeve; Figure 10 shows a view of mounted shaft flanges; and
Figure 1 1 shows a first perspective view of an alternative rotatable shaft. DETAILED DESCRIPTION
With reference to Figure 1 and Figure 2, showing detailed perspective views of a tool holding arrangement 1 , the tool holding arrangement 1 comprises a tool holding device 2, a freely rotatable outer sleeve 3 and a rotatable shaft 4 which here is shown connected to an electric tool driver 5. The electric tool driver 5, in Figure 1 and Figure 2 only shown partially, is of a conventional kind and will not be further discussed here.
With reference also to Figure 6 and Figure 7, showing detailed perspective views of the tool holding device 2, the tool holding device 2 is arranged to be fastened to a suitable tool such as a drill, not shown, by means of, for example, welding to a surface 37 facing away from the electric tool driver 5 when mounted. The tool holding device 2 comprises a first torque-transmitting means 6 in the form of an octagonal through hole 6 running through the tool holding device 2. The tool holding device 2 further comprises an outer thread 7, in this example shown as a trapezoidal thread.
With reference instead also to Figure 4, showing a detailed perspective view of the shaft 4, the shaft 4 comprises a second torque-transmitting means 8 in the form of an octagonal rod 8, arranged to fit in the octagonal through hole 6 of the tool holding device 2. The torque-transmitting means 6, 8 are arranged to engage each other when the tool holding device 2 is connected to the shaft 4. Apertures 38; 39a, 39b, 39c for handling water and dust are arranged in a conventional manner. With reference also to Figure 8 and Figure 9, showing detailed perspective views of the outer sleeve 3, the outer sleeve 3 comprises an inner thread 9, arranged to engage the outer thread 7 of the tool holding device 2 when the tool holding device 2 is connected to the shaft 4. The outer sleeve 3 comprises an outer grip surface 40 that has a structure that allows it to be relatively easily turned by hand, here shown having longitudinally extending ribs. The outer sleeve 3 has a first side 41 and a second side 42, the first side 41 facing away from the electric tool driver 5 when mounted and the second side 42 facing the electric tool driver 5 when mounted. The second side 42 comprises six screw receiving apertures 31 , 32, 33; 34, 35, 36, equipped with inner threads. The purpose of these apertures is explained later in the description.
According to the present invention, with reference to Figure 3 and Figure 4, the shaft 4 comprises a first circumferential shaft flange 10 with a first diameter Di and a second circumferential shaft flange 11 with a second diameter D2, the shaft flanges 10, 11 being separated by a circumferential shaft groove 12 with a third diameter D3. As shown in Figure 9, the outer sleeve 3 has a minimum sleeve inner diameter Dimin which exceeds at least one of the first diameter Di and the second diameter D2.
As shown in Figure 2 and 3. the tool holding arrangement 1 further comprising a first sleeve flange part 13 and a second sleeve flange part 14, the sleeve flange parts 13, 14 being mountable to, and dismountable from, the outer sleeve 3. In this example the mounting is enabled by means of screws 18, 19, 20; 21 , 22, 23 arranged to run through corresponding apertures 24, 25, 26; 27, 28 29 in the sleeve flange parts 13, 14 and to be screwed into the corresponding screw receiving apertures 31 , 32, 33; 34, 35, 36 in the outer sleeve 3.
When mounted to the outer sleeve 3, as shown in Figure 10, the sleeve flange parts 13, 14 have at least one maximum flange part inner diameter Dfmax that falls below both the first diameter Di and the second diameter D2, but exceeds the third diameter D3.
In this way, the outer sleeve 3 may be thread onto the shaft and positioned such that when the sleeve flange parts 13, 14 are mounted to the outer sleeve 3, the sleeve flange parts 13, 14 become positioned between the first circumferential shaft flange 10 and the second circumferential shaft flange 11 , preventing the outer sleeve 3 from coming off the shaft 4. This enables an easy mounting and dismounting of the outer sleeve 3 from the shaft 4.
The outer sleeve 3 is mounted to the shaft 4 in the above manner when the tool holding device 2 is to be connected to the shaft 4. Now, it is possible to mount the tool holding device 2 to the shaft 4 by screwing the outer sleeve 3 such that its inner threads 9 engage the outer threads 7 of the tool holding device 2. Then the tool holding device 2 is connected and axially locked to the shaft 4.
In order to obtain an enhanced mounting of the outer sleeve 3 to the shaft 4, the tool holding arrangement 1 may alternatively further comprise a first spring washer 15 and a second spring washer 16. The spring washers 15, 16 are sandwiched between the corresponding sleeve flange parts 13, 14 and the outer sleeve 3 when the sleeve flange parts 13, 14 are mounted to the outer sleeve 3. In order to enable such a mounting, the spring washers 15, 16 comprises apertures 43, 44, 45; 46, 47, 48 through which said screws 18, 19, 20; 21 , 22, 23 may run through. When the tool holding device 2 is connected and axially locked to the shaft 4, the spring washers 15, 16 abuts a first side 17 of the first circumferential shaft flange 10.
According to an example of a certain type of spring washers, as shown in the detailed perspective view in Figure 5, each spring washer 15, 16 may comprise two protrusions 15a, 15b; 16a, 16b. Each protrusion 15a, 15b; 16a, 16b is in the form of a finger extending radially inwards when the spring washers 15, 16 are mounted. These protrusions 15a, 15b; 16a, 16b are arranged to resiliently engage a plurality of corresponding recesses 17a, 17b, 17c, 17d, 17e, only a limited number of these recesses shown in Figure 4, arranged along the first side 17 of the first circumferential shaft flange 10. The total number of recesses in this example is 8.
By means of these protrusions 15a, 15b; 16a, 16b engaging the recesses 17a, 17b, 17c, 17d, 17e when the outer sleeve 3 is screwn to the tool holding device 2, a locking function is obtained for the outer sleeve 3, preventing it from unscrewing when running the electric tool driver 5 with the tool mounted.
With reference to Figure 11 , some alternatives for the shaft are shown. Figure 11 shows many resemblances to the shaft of Figure 4, and for reasons of clarity in Figure 11 , mainly only the parts that differ are indicated in Figure 11 and discussed in the following. It is to be understood that the other details are more or less the same, or at least equivalent. In Figure 11 , a shaft 4' has a torque-transmitting means in the form of a hexagonal rod 8', where, at the end of the hexagonal rod 8' that is arranged to face the tool holding device 2, a cylindrical first extension 30 is positioned. This cylindrical extension 30 has a fourth diameter D4 that falls below the larges distance between two edges of the hexagonal rod 8' and facilitates the mounting of the tool holding device 2 to the shaft 4'. Furthermore, at the other end of the hexagonal rod 8', facing and abutting the first circumferential shaft flange 10', a cylindrical second extension 31 is positioned, the second extension 31 thus being positioned between the second torque-transmitting means 8, 8' and the first circumferential shaft flange 10'. The second extension 31 has a fifth diameter that is larger than the first extension 30 and is arranged for steering the tool holding device 2 into a rigid holding position by means of a corresponding cylindrical aperture in the tool holding device 2 (not shown).
The cylindrical first extension 30 may also be arranged for steering the tool holding device 2 into a rigid holding position by means of another corresponding cylindrical aperture in the tool holding device 2 (not shown).
Either one of these extensions 30, 31 may be omitted, and may also be used for any type of torque-transmitting means, not only the hexagonal rod 8' shown in this example. One or both of the extensions 30, 31 may instead have a conical shape, where the diameter increases towards the first circumferential shaft flange 10'.
The present invention is not limited to the above, but may vary freely within the scope of the appended claims. For example, the shaft may not be directly connected to the electric tool driver 5, but may constitute an intermediate part. Often the shaft of the electic tool driver has an end with an outer thread intended to be screwed into an inner thread of the tool, normally a drill bit. In this case the tool holding arrangement is in the form of an adapter, where the rotatabie shaft 4 is secured to the thread of the shaft of the electric tool driver and the tool holding device 2 is secured to the thread of the tool.
The electric tool driver 5 is generally in the form of a tool driving power source 5 which may be run by hand or by means of a motor that may be electric, hydraulic, air power, or of a combustion type.
The torque-transmitting means 6, 8 may have any suitable shape, for example in the form of corresponding splines or torques.
Other fastening means than the screws 18, 19, 20; 21 , 22, 23 is of course possible, and the number of such fastening means may vary.
The number of protrusions 15a, 15b; 16a, 16b may also vary. It is possible to have other types of resiliently engaging means, for example spring-loaded balls arranged in the shaft flanges 10, 11. In this case, no spring washers 15, 16 would be used.
The number of shaft flanges 10, 1 1 may vary, but there should be at least two in order to enable a relatively easy locking of the outer sleeve 3 to the shaft 4. Instead of shaft flanges 10, 11 , other traditional fastening means such as locking springs may be used.
The trapezoidal threads are only an example of suitable threads. Any type of suitable threads may be used, and it is desired that the threads are robust and durable.
The torque-transmitting means 6, 8 may have conical shape, having an increasing cross-sectional surface towards the first circumferential shaft flange 0'.
Circumferential recesses (not shown) may be made in the shaft 4, 4' at suitable positions, the recesses being adapted to receive sealings such as O-rings. An example is such a recess in the octagonal or hexagonal rod (8; 8'), both in a strait and conical shaped version. An other example is such a recess in the first or second extension (30; 31 ), both in a cylindrical or conical shaped version.
The number of recesses 17a, 17b, 17c, 17d, 17e arranged along the first side 17 of the first circumferential shaft flange 10 may vary, and is preferably an even multiple of the number of edges of the torque-transmitting means 6, 8. The number of recesses 17a, 17b, 17c, 17d, 17e may for example be double the number of engaging surfaces of the torque-transmitting means 6, 8, which for a hexagonal rod 8' results in twelve corresponding recesses and for an octagonal rod 8 results in sixteen corresponding recesses.
The spring washer may be made in any suitable material such as for example steel, copper or brass.

Claims

1. A tool holding arrangement (1 ) comprising a tool holding device (2), a freely rotatable outer sleeve (3) and a rotatable shaft (4) which is at least connectable to a tool driving power source (5), where the tool holding device (2) comprises a first torque-transmitting means (6) and an outer thread (7), the shaft (4) comprises a second torque-transmitting means (8), and where the outer sleeve (3) comprises an inner thread (9), said torque-transmitting means (6, 8) being arranged to engage each other and said threads (7, 9) being arranged to engage each other when the tool holding device (2) is connected to the shaft (4), characterized in that the shaft (4) comprises a first circumferential shaft flange (10) with a first diameter (D-i) and a second circumferential shaft flange (11) with a second diameter (D2), the shaft flanges (10, 11 ) being separated by a circumferential shaft groove (12) with a third diameter (D3), the outer sleeve (3) having a minimum sleeve inner diameter (Dimin) which exceeds at least one of the first diameter (D-i) and the second diameter (D2), the tool holding arrangement (1 ) further comprising a first sleeve flange part (13) and a second sleeve flange part (14), the sleeve flange parts (13, 14) being mountable to, and dismountable from, the outer sleeve (3) and, when mounted to the outer sleeve (3), having at least one maximum flange part inner diameter (Dfmax) that falls below both the first diameter (D and the second diameter (D2), but exceeds the third diameter (D3).
2. A tool holding arrangement according to claim 1 , characterized in that when the tool holding device (2) is to be connected to the shaft (4), the shaft (4) is positioned to run through the outer sleeve (3) and the sleeve flange parts (13, 14) are mounted to the outer sleeve (3) such that the sleeve flange parts (13, 14) are positioned between the first circumferential shaft flange (10) and the second circumferential shaft flange (11 ), preventing the outer sleeve (3) from coming off the shaft (4).
3. A tool holding arrangement according to any one of the previous claims, characterized in that the tool holding arrangement (1) further comprises a first spring washer (15) and a second spring washer (16), the spring washers (15, 16) being sandwiched between the corresponding sleeve flange parts (13, 14) and the outer sleeve (3) when the sleeve flange parts (13, 14) are mounted to the outer sleeve (3).
4. A tool holding arrangement according to claim 3, characterized in that when the tool holding device (2) is connected and axially locked to the shaft (4), the threads (7, 9) are engaged such that the spring washers (15, 16) abuts a first side (17) of the first circumferential shaft flange (10).
5. A tool holding arrangement according to any one of the claims 3 or 4, characterized in that each spring washer (15, 16) comprises at least one protrusion (15a, 15b; 16a, 16b), each protrusion (15a, 15b; 16a, 16b) being arranged to resiliently engage a plurality of corresponding recesses (17a, 17b, 17c, 17d, 17e) arranged along the first side (17) of the first circumferential shaft flange (10).
6. A tool holding arrangement according to any one of the previous claims, characterized in that the first torque-transmitting means (6) is in the form of an octagonal through hole (6) running through the tool holding device (2), and that the second torque-transmitting means (8) is in the form of a corresponding octagonal rod (8), arranged to fit in the octagonal through hole (6).
7. A tool holding arrangement according to any one of the previous claims, characterized in that the outer thread (7) is in the form of a trapezoidal thread.
8. A tool holding arrangement according to any one of the previous claims, characterized in that the sleeve flange parts (13, 14) are mountable to the outer sleeve (3) by means of screws (18, 19, 20; 21 , 22, 23) running through corresponding apertures (24, 25, 26; 27, 28 29) and into corresponding screw receiving apertures (31 , 32, 33; 34, 35, 36) in the outer sleeve (3).
9. A tool holding arrangement according to any one of the previous claims, characterized in that a first extension (30) is positioned at an end of the second torque-transmitting means (8, 8') that is arranged to face the tool holding device (2).
10. A tool holding arrangement according to claim 9, characterized in that the first extension (30) either is cylindrical or conical where its diameter increases towards the first circumferential shaft flange (10, 10').
11. A tool holding arrangement according to any one of the previous claims, characterized in that a second extension (31 ) is positioned between the second torque-transmitting means (8, 8') and the first circumferential shaft flange (10, 10').
12. A tool holding arrangement according to claim 11 , characterized in that the second extension (31 ) either is cylindrical or conical where its diameter increases towards the first circumferential shaft flange (10, 10').
PCT/SE2014/050155 2013-02-18 2014-02-07 A tool holder arrangement WO2014126525A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1350188-7 2013-02-18
SE1350188A SE538056C2 (en) 2013-02-18 2013-02-18 Tool holder assembly including a freely rotatable sleeve

Publications (1)

Publication Number Publication Date
WO2014126525A1 true WO2014126525A1 (en) 2014-08-21

Family

ID=51354416

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2014/050155 WO2014126525A1 (en) 2013-02-18 2014-02-07 A tool holder arrangement

Country Status (2)

Country Link
SE (1) SE538056C2 (en)
WO (1) WO2014126525A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3900905A4 (en) * 2018-12-17 2022-01-26 Daesunggt Co., Ltd. Core drill having function for one-touch locking core bit
US11982184B2 (en) 2021-02-10 2024-05-14 Milwaukee Electric Tool Corporation Core drill assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384540A1 (en) * 2002-07-23 2004-01-28 HILTI Aktiengesellschaft Tool holder for core bit
EP1424152A1 (en) * 2002-11-30 2004-06-02 HILTI Aktiengesellschaft Tool holding device for core drills
US20070243013A1 (en) * 2006-04-13 2007-10-18 Hewitt William G Tool system for mechanical mounting assembly
WO2008148373A1 (en) * 2007-06-04 2008-12-11 Ifa Maschinenbau Gmbh Device for the rotationally fixed connection of a pin of a gearbox to an articulated body of a drive coupling of a drive shaft
AU2012101588A4 (en) * 2012-08-01 2012-11-29 Techtronic Power Tools Technology Limited Power tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384540A1 (en) * 2002-07-23 2004-01-28 HILTI Aktiengesellschaft Tool holder for core bit
EP1424152A1 (en) * 2002-11-30 2004-06-02 HILTI Aktiengesellschaft Tool holding device for core drills
US20070243013A1 (en) * 2006-04-13 2007-10-18 Hewitt William G Tool system for mechanical mounting assembly
WO2008148373A1 (en) * 2007-06-04 2008-12-11 Ifa Maschinenbau Gmbh Device for the rotationally fixed connection of a pin of a gearbox to an articulated body of a drive coupling of a drive shaft
AU2012101588A4 (en) * 2012-08-01 2012-11-29 Techtronic Power Tools Technology Limited Power tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3900905A4 (en) * 2018-12-17 2022-01-26 Daesunggt Co., Ltd. Core drill having function for one-touch locking core bit
US11982184B2 (en) 2021-02-10 2024-05-14 Milwaukee Electric Tool Corporation Core drill assembly

Also Published As

Publication number Publication date
SE538056C2 (en) 2016-02-23
SE1350188A1 (en) 2014-08-19

Similar Documents

Publication Publication Date Title
US7478979B2 (en) Rotatable chuck
US7481608B2 (en) Rotatable chuck
US20150037111A1 (en) Positioning sleeve assembly adapted for engaging with different tool parts
US8821084B2 (en) Tool holding module
US9186785B2 (en) Bearing adjuster
EP2294324A1 (en) Radially expanding bolt assembly
GB2504943A (en) A cleaner head with an agitator and drive assembly arrangement
KR20150003475A (en) Drilling Machine and Cutting Tool Used Therein
EP3118098A1 (en) Bicycle pedal
US20220134446A1 (en) A Tool Holding Arrangement, Thread Insert, Rotatable Shaft and Drill Unit
WO2014126525A1 (en) A tool holder arrangement
RU2694863C2 (en) Cartridge for connection of diamond drilling device with drilling bit
US20110308021A1 (en) Pipe Deburrer with Replaceable Tool Head
EP2745993A2 (en) Tool attachment for a manual tool machine
CN104416510A (en) Dismantling tool for threaded connection piece
JP2009107058A (en) Socket for working tool
JP3195281U (en) Auto screwdriver magnetic coupling
US8250714B2 (en) Handgrip for handlebar
US20060236817A1 (en) Power tool for and method of moving elements relative to an object
US20120018181A1 (en) Output Mode Switching Device For Power Tool
US20080314212A1 (en) Tool holding module
AU2007203350B2 (en) Structure of a power tool
CN102674178B (en) Multifunctional electric capstan
CN202625684U (en) Multifunctional electric capstan
US20230321794A1 (en) Torque transmitting assembly for a power tool

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14751973

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14751973

Country of ref document: EP

Kind code of ref document: A1