CN105710416B

CN105710416B - Plug-in tool

Info

Publication number: CN105710416B
Application number: CN201510947884.6A
Authority: CN
Inventors: H.多斯特
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2014-12-18
Filing date: 2015-12-17
Publication date: 2020-11-17
Anticipated expiration: 2035-12-17
Also published as: CN105710416A; DE202014010069U1

Abstract

An insertion tool, in particular for drilling and grooving workpieces, in particular workpieces made of wood, metal, plastic or composite, having at least one shank region (3), having at least one first cutting element (11) for machining, in particular grooving, workpieces, having at least one feed channel (15) extending along an axis (a) for feeding drilling chips, having at least one second cutting element (13) for grooving workpieces to be machined, and having a receiving region (5), characterized in that the feed channel (15) extends at least partially linearly relative to the axis (a).

Description

Plug-in tool

Technical Field

The invention relates to an insertion tool, in particular for drilling and grooving workpieces, in particular workpieces made of wood, metal, plastic or composites, having at least one shank region, having at least one first cutting element for machining, in particular drilling, the workpiece, having at least one feed channel extending along an axis for feeding drill chips, having at least one second cutting element for grooving the workpiece to be machined, and having a receiving region.

Background

In US 2004/0179912 a1 a drilling tool is known with a first cutting member for drilling a workpiece, a feed channel extending helically about an axis, and a second cutting member for grooving the workpiece.

Disclosure of Invention

The object of the invention is to improve an insertion tool for a power tool, in particular a hand-held power tool, by simple design measures, so that a quick and simple production of the insertion tool is possible.

The object is achieved by an insertion tool, in particular for drilling and grooving workpieces, in particular workpieces made of wood, metal, plastic or composite, having at least one shank region, having at least one first cutting element for machining, in particular drilling, the workpiece, having at least one feed channel extending along an axis for feeding drill chips, having at least one second cutting element for grooving the workpiece to be machined, and having a receiving region, in particular for receiving in a receiving device. According to the invention, the conveyor trough extends at least partially linearly with respect to the axis.

The invention makes it possible to design the insertion tool such that it can be produced particularly simply. The insertion tool according to the invention has a feed channel which is designed in a linear manner, in particular with respect to the axis of the insertion tool. This allows particularly rapid and efficient production of the insertion tool, since the feed trough is not helical, but is constructed linearly along the axis, and the device for producing a linear feed trough is not as complex as the device for producing a helical feed trough. This not only saves the manufacturing time, but also enables a simple construction of the manufacturing apparatus. In this embodiment, in the case of a feed trough extending linearly in relation to the axis of the insertion tool, no disadvantages arise in terms of material feed, in particular the removal of drill cuttings from the drill hole, since the insertion tool is preferably provided for machining thin or flat workpieces, such as sheets of metal, plastic, wood, composite or other materials that appear to be of interest to the person skilled in the art.

The insertion tool, in particular the drilling tool, according to the invention is preferably of one-piece construction. In particular for drilling and grooving workpieces, in particular workpieces made of wood, metal, plastic or composites, the insertion tool has at least one shank region with at least one first cutting element for machining, in particular drilling, the workpiece. The insertion tool is configured with at least one feed channel extending along an axis for feeding drilling swarf. The insertion tool also has at least one second cutting element for grooving the workpiece to be machined. Furthermore, a receiving region is provided, in particular for receiving in a receiving device. According to the invention, the feed trough extends at least partially linearly relative to the axis of the drilling tool.

"cutting element" is understood to mean, in a related manner, an element, with defined or undefined shape, which is designed to divide a material. The cutting member may here be designed to cut and/or divide the material. The cutting element can have at least one edge, in particular a cutting edge. The cutting member may be configured as at least one apex angle and/or tip.

The dependent claims advantageously give improvements to the insertion tool of the invention.

It may be advantageous to have the trough extend at least substantially parallel to the axis. In particular, the shaft region can have at least one conveying edge running at least substantially parallel to the axis, which conveying edge delimits at least one conveying groove in the circumferential direction of the insertion tool. The complexity of the feed trough is thereby reduced, so that the insertion tool can be produced simply and quickly.

Preferably, the second cutting member may in particular directly abut the conveying trough. Particularly preferably, the second cutting member may be arranged on the side of the conveying trough opposite the first cutting member. This makes it possible to advantageously drill a hole in the workpiece in a first working step with a first cutting part of the insertion tool and to countersink the drilled hole in a second working step with a second cutting part of the insertion tool.

It is also proposed that the at least one second cutting member can be arranged adjacent, in particular abutting, the receiving region. This makes it possible to achieve a compact design of the insertion tool.

It is furthermore proposed that the bar region has at least one third cutting element, which is in particular designed as a transverse cutting element. The transverse cutting member may here be configured substantially transversely to the first cutting member. The third component can in particular have a reduced radial extent as a result of grinding (anshlff) or cross-grinding (Kreuzschliff). This reduces the pressure force necessary for the advance of the drilling tool and the frictional forces acting during drilling. Furthermore, the drilling tool can be better centered on the workpiece. The transverse cutting element can in particular be a drill tip, in particular a centering tip.

The rod region can preferably extend axially compared to the receiving region up to 400%, in particular up to 350%, preferably up to 300%, preferably up to 250%, particularly preferably up to 200%. A particularly advantageous drilling depth can thereby be achieved compared to the diameter.

The shank region may preferably have a first section, the maximum radial extent of which remains constant, in particular at least in regions, with increasing distance from the first cutting member. The production of the insertion tool is thereby simplified, since the production device and/or the blank required for production can be designed without complications.

In an alternative embodiment, the shank region may have a first section, the maximum radial extent of which increases at least partially with increasing distance from the first cutting member. This allows efficient drilling of the workpiece to be drilled. By the first, sharpened section of the shank region, the radial extension distance of the shank region adjoining the first cutting member is reduced. The maximum radial extension of the first cutting member is thereby reduced compared to the radial extension of the bore hole. This results in rapid drilling of the workpiece to be drilled. As the depth of the borehole increases, the borehole expands to the net diameter of the borehole against the direction of advancement as the first section of the rod region widens. This prevents the drilling tool from slipping axially when drilling thin or flat workpieces, such as sheet metal, since after the drilling and subsequent penetration of the first cutting member through the flat workpiece, the clear diameter of the drilled hole is not yet reached. The net diameter is only reached with further drilling in the axial direction, in particular continuously. This can be designed in particular with the fourth cutting member configured as a secondary cutting member. The secondary cutting member may also be configured as a conveying edge of the conveying trough. In order to drill thin or flat workpieces, the pressure initially needs to be increased, which therefore does not decrease sharply during drilling.

The receiving region may preferably be of hexagonal configuration. This makes it possible to accommodate the insertion tool in the usual accommodating devices on the market. The receiving region is not limited to a hexagonal embodiment, but may comprise any receiving region design that appears to be meaningful to the person skilled in the art, such as a quadrangular or polygonal receiving region.

Furthermore, a system is proposed, which has an adapter, a plug-in tool holder and at least one plug-in tool. The adapter can have a fastening region, a holding region for receiving an insertion tool or an insertion tool holder. The plug-in tool holder can have a first connection region and a second connection region for connection to a receiving device or an adapter, in particular of a hand-held power tool. The system significantly expands the field of application of the insertion tool, in particular, the insertion tool can be comfortably connected to the insertion tool holder, thereby improving the flexibility of the operator.

The first connection section can preferably have a first outer receptacle for connecting with a receptacle or adapter and a first inner receptacle for receiving an insertion tool. The second connection section can preferably have a second outer receptacle for connecting with a receptacle or adapter and a second inner receptacle for receiving a plug-in tool. Thereby improving the application capability of the system. The connecting region may in particular have a substantially cylindrical outer surface. This makes it possible to form an advantageously elongated second connecting region.

The plug-in tool holder is particularly preferably releasably connectable to the adapter. This results in a particularly advantageous plug system with which the operator can quickly and easily carry out the task to be processed.

Drawings

Other advantages may be derived from the following description of the figures. Embodiments of the invention are shown in the drawings. The figures, description and claims contain a number of combinations of features. One skilled in the art may also examine these features and compositions individually and in other advantageous combinations depending on the purpose. Wherein:

fig. 1 is a side view of a hand-held power tool with an insertion tool;

FIG. 2 is a side view of the insertion tool of the present invention;

FIG. 3 is a top view of the insertion tool of the present invention;

FIG. 4 is a cross-sectional view A-A of the insertion tool of the present invention;

FIGS. 5a-d are a top view, two side views and a cross-sectional view of the system of the present invention;

FIGS. 6a-b are side and cross-sectional views of a plug-in tool holder of the system of the present invention;

fig. 7 is a view of the system of the present invention.

In these figures, like components are labeled with like reference numerals.

Detailed Description

The following figures all relate to an insertion tool 1, which is intended in particular for being accommodated in a receiving device 105 of a machine tool, preferably a hand-held machine tool 101, and which performs a working movement in a rotating and/or translating manner and is advanced at least partially in a translating manner to a workpiece to be machined. The insertion tool 1 of the invention is widely applicable and suitable for machining workpieces such as wood, metal, plastic or composites. The insertion tool 1 according to the invention is designed to be accommodated in a receiving device 105, in particular a clamping device, which is known to the person skilled in the art and is designed to receive the insertion tool 1. The plug-in tool 1 or the adapter of the system according to the invention can be accommodated without problems, in particular simply, in a commercially available hand-held power tool or other, in particular manually driven, rotary or screw device.

Fig. 1 shows a top view of a hand-held power tool 101 with a plug-in tool 1, which is accommodated in a receiving device 105. The hand-held power tool 101 has a hand-held power tool housing 103 with at least one grip region 109 for gripping by a hand of a user. In this embodiment, the receiving device 105 has three jaws (not shown). These clamping jaws clamp the insertion tool 1 radially in the receiving means 105.

Fig. 2 shows a side view of the insertion tool 1 according to the invention. The insertion tool 1 is at least substantially cylindrical in configuration and extends along an axis a of the insertion tool 1. The insertion tool 1 comprises a shaft region 3 and a receiving region 5 connected to the shaft region 3. The rod region 3 has a first section 7 and a second section 9 connected to the first section 7.

The first section 7 has at least one first cutting member 11 for cutting or drilling a workpiece, in particular a thin or flat workpiece such as a plate or a metal sheet. At least one conveyor channel 15 is connected to the first cutting member 11, which conveyor channel is able to convey drill chips or drill chips produced during machining out of the drill hole. The first cutting member 11 here defines the radial extension of the shank area 3.

The feed groove 15 is connected to the cutting face of the first cutting member 11 and extends along the axis a of the insert tool 1. The feed channel 15 is designed in a straight line, in particular parallel to the axis a of the insertion tool 1. The conveyor channel 15 can be formed essentially in the shape of a sector in the shaft region 3.

The conveyor channel 15 is produced in such a way that, in a cross-sectional view, for example, of circular cross-section, a segment is cut out relative to the center. The center point can be arranged on the axis a of the insertion tool 1. The segment comprises a circular arc which is spanned by two boundary points and at least one circular chord which connects the two boundary points. Here, the round string may be straight or curved. The conveying trough 15 is furthermore delimited in particular in the circumferential direction by at least one conveying edge 16. The conveying edge 16 can be a secondary cutting member here. The conveying edge 16 can be provided for flattening or spreading the borehole, in particular the inner face of the borehole. The conveying edge 16 can have a shoulder 18 in the circumferential direction in the region opposite the conveying edge 16 in order to increase the mechanical load-bearing capacity, in particular the torque-bearing capacity, of the shank region.

The maximum radial extent of the first section 7 of the rod region 3 is at least substantially defined by the diameter to be drilled. The maximum radial extent of the first portion 7 is constant with increasing distance from the at least one first cutting member 11, in particular against the advancing direction. In an alternative embodiment, the maximum radial extent of the first section 7 can increase with increasing distance from the at least one first cutting member 11, in particular against the advancing direction. The first section 7 of the rod region 3 is connected to the second section 9. The radial extension of the second section 9 increases at least partially continuously. The second section 9 also has at least one second cutting element 13. In this embodiment, the second section 9 has exactly three second cutting members 13.

At least one second cutting member 13 is provided for grooving the drill hole. The second cutting member 13 is here a second cutting edge which projects through at least one recess 19. The recess 19 has a curved recess surface 20. Alternatively, the recess 19 may have a planar recess face 20. In this embodiment, the pocket face 20 is configured as a cutting face of the second cutting member 13 and is arranged to carry drill swarf or debris out of the drill hole or to provide at least one delivery volume to enable storage of drill swarf. The recess 19 extends transverse, in particular parallel or perpendicular, to the axis a of the insertion tool 1. The at least one second cutting element 13 forms an angle in the range from 40 ° to 50 ° with respect to the axis a of the plug-in tool 1. In an alternative embodiment, the angle of bend of the at least one second cutting member 13 is at most 90 °, in particular at most 80 °, preferably at most 70 °, preferably at most 60 °, particularly preferably at most 40 °. Likewise, the at least one second cutting member 13 forms an angle of at most 35 °, in particular at most 25 °, preferably at most 20 °, with respect to the axis a of the insertion tool 1. The second section 9 is connected to or adjoins the receiving region 7 located opposite the first section 7 of the rod region 3.

The receiving area 5 has a hexagonal cross-sectional shape. Retaining recesses 21 are formed on the outer side of the receiving region 5, in particular on the edges of the hexagonal receiving region. The retaining recess 21 is provided to enable the insertion tool 1 to be inserted into the receiving device. The retaining recess 21 can be designed here as a form-fitting part. The retaining recesses 21 can separate the edges of the hexagonal receiving area 5.

Fig. 3 shows a top view of the insertion tool 1 from fig. 2. Here, the hexagonal receiving region 5 and the rod region 3 can be seen. At least one first cutting member 11 and a third cutting member 17 extending transversely to the first cutting member 11 are also visible. The third cutting member 17 separates the two end faces of the insertion tool 1. The two end faces are here the exposed faces of the respective first cutting members 11 corresponding to each other. The first cutting member 11 extends at least substantially in a radial direction. The first cutting member 11 has an increasing extension distance in a transverse direction with respect to the radial direction of the axis a of the insertion tool 1. This results in more material in the radially outer region, so that the torque load is reduced. Two feed channels 15 can also be seen, which run straight along the axis a of the insertion tool 1.

Fig. 4 shows a cross-sectional view a-a of the inventive insertion tool 1 of fig. 2. It can be seen in particular how the recesses 19 form corresponding second cutting elements 13, which are cut out in the second section 9 of the shaft region 3. These recesses 19 are each formed by two edges 45, which are formed linearly in a cross-sectional view a-a and in particular run perpendicular to one another. In an alternative embodiment, these edges 45 can also be curved.

Fig. 5a-5d show side views of the adapter 31 of the system of the invention. The adapter 31 has a fixing area 33 and a holding area 35. The fastening region 33 has a hexagonal receiving formation which is divided into two hexagonally configured parts by a groove configured in the circumferential direction of the fastening region 33.

A holding region 35 is connected to the fastening region 33. The holding region 35 is at least substantially of hollow-cylindrical design. The fastening region 33 is also at least substantially of hollow-cylindrical design. The maximum radial extension of the holding region 35 is greater than the maximum radial extension of the securing region 33. The holding region 35 of the adapter 31 is a holding region 33 known from the prior art, which is designed to accommodate different embodiments of the insertion tool 1. In this embodiment, the holding area 35 has at least two

chambers

37, 39, as can be seen in the cross-sectional view of fig. 5 b. The first chamber 37 is designed to receive the insertion tool 1 or the insertion tool holder. The second chamber 39 is designed to receive a plug-in tool 1, in particular with an axial main extent, which can be held in a plug-in tool holder. Here, the first chamber 37 may have a hexagonal inner contour in cross section, as can already be seen in fig. 5 c. Alternatively, other internal profiles of the first chamber 37 may be used, which would appear to be meaningful to a person skilled in the art.

Fig. 5d shows a bottom view of the adapter 35. Here, however, the fastening area 33 of the adapter 31 can be seen.

Fig. 6a shows a plug-in tool holder 51 of the system of the invention. The plug-in tool holder 51 also has a first connection region 53 and a second connection region 55 located opposite the first connection region 53. The first connection region 53 and the second connection region 55 are separated from one another by a radial shoulder 57.

The first connection region 53 has: a first inner receptacle 59 for receiving a plug-in tool 1, as can be seen in the cross-sectional view of the plug-in tool holder 51 of fig. 6 b; a first outer receptacle 61 is provided for connection to a receptacle 105 of the hand-held power tool or to the adapter 31, in particular to the first chamber 37 of the adapter 31. The first interior receptacle 59 also has a hexagonal interior contour, which is provided for receiving the insertion tool 1 with a hexagonal receiving region 5. The first outer receptacle 61 has a hexagonal outer contour, which can be provided for a form-fitting connection with the receptacle 105 or with the adapter 31.

The second connection region 55 has: a second inner receptacle 63 for receiving the insertion tool 1, as can be seen in the cross-sectional view of the insertion tool holder 51 of fig. 6 b; second outer receptacle 65 is intended to be connected to receptacle 105 of the hand-held power tool or to adapter 31, in particular to first chamber 37 of adapter 31. The second interior receptacle 63 also has a hexagonal interior contour, which is provided for receiving the insertion tool 1 with the hexagonal receiving region 5. The second outer receptacle 65 also has a hexagonal outer contour, which can be provided for a form-fitting connection with the receptacle 105 or with the adapter 31. The second outer receptacle 65 is connected to the shoulder 57 and extends in the axial direction. A substantially cylindrical outer surface 67 is connected to the outer receptacle 65 in the axial direction. Here, the outer surface 67 has no hexagonal outer contour in this embodiment.

The second outer receptacle 65 of the second connecting region 55 is spaced apart from the second inner receptacle 63 in the axial direction. The first connection area 53 and the second connection area 55 have the same function, but the second connection area 55 has a greater axial extension than the first connection area 53. This makes it possible for the insertion tool 1 arranged in the second connection region 55 to extend further in the axial direction.

Fig. 7 shows a system of an adapter 31, a plug-in tool holder 51 and a plug-in tool 1 according to the invention. It can be seen how the plug-in tool holder 51 is connected with the plug-in tool 1 by means of the second connection region 55, in particular the second inner receptacle 63 of the second connection region 55, and with the first connection region 53, in particular the first inner receptacle 59 of the first connection region 53, and with another plug-in tool 1, for example a screwdriver (schrauerbit). The first connection region 53, in particular the first outer receptacle 61, can also be connected to the adapter 31 by means of the holding region 35, in particular the first chamber 37 of the holding region 35. The insertion tool 1 arranged in the first connection region 53 can thereby be extended into the second cavity 39 of the holding region 35 and supported in the second cavity 39.

Claims

1. A system having an adapter (31), a tool carrier (51) and at least one insert tool (1), the insert tool (1) being used for drilling and grooving workpieces, wherein the adapter (31) has a fastening region (33) and a holding region (35) for receiving the insert tool or the insert tool carrier (51), the insert tool carrier (51) has a first connecting region (53) and a second connecting region (55) for connecting to a receiving device (105) or the adapter (31), wherein the first connecting region (53) has a first outer receptacle (61) for connecting to the receiving device (105) or the adapter (31) and a first inner receptacle (59) for receiving the insert tool, wherein the second connecting region (55) has a second outer receptacle (65) for connecting to the receiving device (105) or the adapter (31) and a second inner receptacle (65) for receiving the insert tool A receptacle (63), wherein the insertion tool: with at least one shank region (3) with at least one first cutting member (11) for machining a workpiece; with at least one conveying channel (15) extending along the axis (a) of the insertion tool (1) for conveying drilling swarf; a second cutting member (13) with at least one for sinking the workpiece to be machined; with a receiving region (5), and wherein the conveyor trough (15) extends at least partially linearly with respect to the axis (a), and the rod region (3) has a first section (7) whose maximum radial extension increases with increasing distance from the first cutting member (11).

2. System with adapter (31), insert tool holder (51) and at least one insert tool (1) according to claim 1, characterized in that the feed trough (15) extends substantially parallel to the axis (a).

3. The system with an adapter (31), a plug-in tool holder (51) and at least one plug-in tool (1) as claimed in one of the preceding claims, characterized in that the shank region (3) has at least one transport edge (16) running substantially parallel to the axis (a), which transport edge delimits at least one transport groove (15) in the circumferential direction of the plug-in tool.

4. System with adapter (31), plug-in tool holder (51) and at least one plug-in tool (1) according to claim 1 or 2, characterized in that the second cutting member (13) directly adjoins the feed chute (15).

5. System with adapter (31), plug-in tool holder (51) and at least one plug-in tool (1) according to claim 1 or 2, characterized in that the second cutting member (13) is arranged on the side of the feed chute (15) which is situated opposite the first cutting member (11).

6. System with an adapter (31), a plug-in tool holder (51) and at least one plug-in tool (1) according to claim 1 or 2, characterized in that the second cutting member (13) is configured adjacent to the receiving region (5).

7. System with adapter (31), insertion tool holder (51) and at least one insertion tool (1) according to claim 1 or 2, characterized in that the shank region (3) has at least one third cutting member (17) which is configured as a transverse cutting member.

8. System with an adapter (31), a plug-in tool holder (51) and at least one plug-in tool (1) according to claim 1 or 2, characterized in that the shank region (3) extends axially up to 400% compared to the receiving region (5).

9. System with an adapter (31), an insertion tool holder (51) and at least one insertion tool (1) according to claim 1 or 2, characterized in that the receiving region (5) has a hexagonal screw head shape.

10. System with adapter (31), insertion tool holder (51) and at least one insertion tool (1) according to claim 1 or 2, characterized in that the second connection region (55) has a substantially cylindrical outer surface (67).

11. System with an adapter (31), a plug-in tool holder (51) and at least one plug-in tool (1) according to claim 1 or 2, characterized in that the plug-in tool holder (51) can be releasably connected to the adapter (31).

12. System with adapter (31), plug-in tool holder (51) and at least one plug-in tool (1) according to claim 1, characterized in that the workpiece consists of wood, metal, plastic or a composite.

13. System with adapter (31), insert tool holder (51) and at least one insert tool (1) according to claim 1, characterized in that the shank region is provided with at least one first cutting member (11) for drilling a workpiece.

14. System with adapter (31), insertion tool holder (51) and at least one insertion tool (1) according to claim 1 or 2, characterized in that the shank region (3) extends axially up to 350% compared to the receiving region (5).

15. System with adapter (31), insertion tool holder (51) and at least one insertion tool (1) according to claim 1 or 2, characterized in that the shank region (3) extends axially up to 300% compared to the receiving region (5).

16. System with adapter (31), insertion tool holder (51) and at least one insertion tool (1) according to claim 1 or 2, characterized in that the shank region (3) extends axially up to 250% compared to the receiving region (5).

17. System with an adapter (31), a plug-in tool holder (51) and at least one plug-in tool (1) according to claim 1 or 2, characterized in that the shank region (3) extends axially up to 200% compared to the receiving region (5).