CN217913019U

CN217913019U - Cutter for machining back countersink and magnetic drill using same

Info

Publication number: CN217913019U
Application number: CN202221833108.5U
Authority: CN
Inventors: 雒正良; 曹星; 张玲玲; 姚步峰
Original assignee: Xi'an Guoshui Wind Power Equipment Co ltd
Current assignee: Xi'an Guoshui Wind Power Equipment Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-11-29
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses a magnetic drill for processing cutter in back countersink and use it, including cutter arbor and tool bit, the tool bit is installed in the front end of cutter arbor, and fixed through fixed subassembly, the up end of tool bit is provided with the cutting edge that is used for processing back countersink. The utility model discloses a design preparation structure is ingenious, simple and practical's special processing cutter of back countersink, has solved the problem that hand frock unloads the sword, shuts down, machining efficiency is low in the traditional course of working of back countersink.

Description

Cutter for processing back spot facing and magnetic drill using same

Technical Field

The utility model relates to a back countersink processing cutter technical field, concretely relates to a magnetic drill for processing back countersink's cutter and use it.

Background

In the prior art, when back spot facing is machined, one strand of cutter is fed from the end face of a large hole, and then the small hole is machined and then the large hole is machined. However, due to structural limitations, some parts are fed from the end face of the large hole, the cutter and the parts interfere with each other, only the cutter is fed from the end face of the small hole, the small hole is machined firstly, then the cutter is fed to the bottom of the large hole, and the large hole is machined reversely (from the bottom of the large hole to the direction of the small hole). The large hole is called back spot facing, the processing method is called back spot facing, and the used cutter is called back spot facing.

When back reaming is carried out, each reamed hole needs to go through the processes of cutter mounting, machining, stopping and cutter dismounting, the machining efficiency is very low, the machining cost of the numerical control machine tool is high, and the requirement of market batch production cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of this, the main objective of the present invention is to provide a tool for machining back spot facing and a magnetic drill using the same.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the embodiment of the utility model provides a cutter for processing back countersink, including cutter arbor and tool bit, its characterized in that, the tool bit is installed in the front end of cutter arbor, and fixed through fixed subassembly, the up end of tool bit is provided with the cutting edge that is used for processing back countersink.

The utility model discloses preferred, the cutter arbor includes pole portion and lower pole portion, go up pole portion and be handle of a knife clamping part, the cross section is circular, lower pole portion for add man-hour with part contact site, the cross section is formed by two same circular arcs butt joint in opposite directions.

The utility model discloses preferred, be provided with the chute on the lower rod part for use with the tool bit cooperation.

The utility model discloses it is preferred, the tool bit includes cutter body and cutting edge, be provided with a plurality of bevel faces on the up end of cutter body, it is a plurality of helical structure, every are constituteed to the bevel face set up the cutting edge on the bevel face, the cutting edge sets up to arc with bevel face bottom hookup location for increase cutting edge and bevel face's area of contact.

The utility model discloses it is preferred, be provided with the inclined plane that corresponds with the chute on the inner wall of cutter body, set up the first screw hole and the second screw hole of looks adaptation on inclined plane and the chute respectively, it is provided with the bolt groove to lie in the inclined plane correspondence counterpoint on the cutter body, the bolt sets up in the bolt inslot, and first screw hole of threaded connection and second screw hole for fixed cutter body and cutter arbor.

The utility model discloses preferred, the material of cutter arbor is 40Cr, and its quenching and tempering hardness is HB220-260, and the quenching hardness is HRC30-40.

An embodiment of the utility model provides a magnetic drill, including foretell cutter, motor, slide rail, frame and the electromagnetism base that is used for processing back countersink, the electromagnetism base sets up in the bottom of frame, the motor passes through slide rail slidable mounting in one side of frame, pass through drill chuck fixed cutter in the pivot of motor.

The utility model discloses it is preferred, be provided with the scale on the slide rail for measure back of the body counterbore depth of processing.

Compared with the prior art, the utility model discloses a design preparation structure is ingenious, simple and practical's special processing cutter in back counter-boring, has solved in the traditional course of working of back counter-boring hand frock and has unloaded the sword, shut down, the problem that machining efficiency is low.

Drawings

Fig. 1 is a schematic structural view of a cutter bar according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of the cutter bar according to the embodiment of the present invention;

FIG. 3 is a schematic view of the connection between the guide rod and the tool bit according to the embodiment of the present invention;

FIG. 4 is a schematic perspective view of the connection between the guide rod and the tool bit according to the embodiment of the present invention;

fig. 5 is a schematic cross-sectional structure diagram of a cutter head according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the magnetic drill according to the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplified description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a" \8230; "does not exclude the presence of additional like elements in a process, article, or apparatus that comprises the element.

As shown in fig. 1-5, an embodiment of the present invention provides a tool for processing back countersink, including cutter bar 1 and a tool bit, the tool bit is installed at the front end of cutter bar 1, and is fixed through a fixing component.

The cutter bar 1 comprises an upper rod part 11 and a lower rod part 12, the upper rod part 11 is a cutter handle clamping part, the cross section of the upper rod part is circular, the lower rod part 12 is a part which is in contact with a part during machining, and the cross section is formed by oppositely butting two same circular arcs.

The lower rod part 12 is provided with a chute 13 for matching with a cutter head.

The cutter head comprises a cutter body 21 and a cutter edge 22, a plurality of oblique angle surfaces 26 are arranged on the upper end surface of the cutter body 21, the oblique angle surfaces 26 form a spiral structure, the cutter edge 22 is arranged on each oblique angle surface 26, and the connecting position of the bottom of the cutter edge 22 and the oblique angle surface 26 is in a circular arc shape 221 and used for increasing the contact area of the cutter edge 22 and the oblique angle surface 26.

The inner wall of the cutter body 21 is provided with an inclined surface 221 corresponding to the inclined groove 13, the inclined surface 221 and the inclined groove 13 are respectively provided with a first threaded hole 212 and a second threaded hole 14 which are matched with each other, the cutter body 21 is provided with a bolt groove 23 corresponding to the inclined surface 221 in an aligned manner, and the bolt 25 is arranged in the bolt groove 23 and is in threaded connection with the first threaded hole 212 and the second threaded hole 14 to fix the cutter body 21 and the cutter bar 1.

The material of the cutter bar 1 is 40Cr, the quenching and tempering hardness is HB220-260, and the quenching hardness is HRC30-40.

As shown in fig. 1-6, the second embodiment of the present invention provides a magnetic drill, including the above-mentioned cutter, motor 5, slide rail 6, frame 3 and electromagnetism base 4 for processing back countersink, electromagnetism base 4 sets up in the bottom of frame 3, motor 5 passes through slide rail 6 slidable mounting in one side of frame 5, fix the cutter through drill chuck 7 in the pivot of motor 3.

And a graduated scale 8 is arranged on the slide rail 6 and used for measuring the back spot facing machining depth.

The working principle of the utility model is as follows:

as shown in fig. 1-6, the magnetic drill mills on the outer wall of the workpiece to avoid shaking, the magnetic drill passes through a preset hole on the workpiece, the cutter bar 1 is installed on the magnetic drill, the working principle that the magnetic drill can rotate in the positive and negative directions is utilized, the drill rod is pulled outwards until contacting the workpiece, the counter-boring depth can be controlled by the graduated scale 8, the counter-boring size is determined by a cutter, the cutter bar 1 is convenient to disassemble, the cutter bar 1 only needs to pass through the installation hole, the rotation direction can be clamped, and the cutter is fed in the opposite direction during machining, the cutter is not easy to drop, the machining operation is simple, the lower rate is high, and the machining cost is greatly saved.

To sum up, the utility model discloses a design preparation structure is ingenious, simple and practical's special processing cutter of back countersink, has solved the problem that hand frock unloads the sword, shuts down, machining efficiency hangs down in the traditional course of working of back countersink.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides a cutter for processing back countersink, includes cutter arbor and tool bit, its characterized in that, the tool bit is installed in the front end of cutter arbor, and fixed through fixed subassembly, the up end of tool bit is provided with the cutting edge that is used for processing back countersink.

2. The tool for machining the countersink according to claim 1, wherein the tool bar comprises an upper bar part and a lower bar part, the upper bar part is a tool holder clamping part, the cross section of the upper bar part is circular, the lower bar part is a part in contact with a part during machining, and the cross section of the lower bar part is formed by oppositely butting two identical circular arcs.

3. The tool for back spot facing machining according to claim 2, wherein the lower rod portion is provided with a tapered groove for being matched with a tool bit.

4. The tool for machining the back spot facing according to claim 3, wherein the tool bit comprises a tool body and a cutting edge, a plurality of beveled surfaces are arranged on the upper end surface of the tool body, the plurality of beveled surfaces form a spiral structure, a cutting edge is arranged on each beveled surface, and the connecting position of the cutting edge and the bottom of the beveled surface is in a circular arc shape so as to increase the contact area between the cutting edge and the beveled surface.

5. The tool for machining the back spot facing according to claim 4, wherein an inclined plane corresponding to the inclined groove is arranged on the inner wall of the tool body, a first threaded hole and a second threaded hole which are matched with each other are respectively arranged on the inclined plane and the inclined groove, a bolt groove is correspondingly arranged on the tool body in an aligned mode on the inclined plane, the bolt is arranged in the bolt groove, and the bolt is in threaded connection with the first threaded hole and the second threaded hole and used for fixing the tool body and the tool bar.

6. The tool for machining the back spot-facing hole as claimed in claim 5, wherein the material of the tool bar is 40Cr, the quenching and tempering hardness is HB220-260, and the quenching and tempering hardness is HRC30-40.

7. A magnetic drill is characterized by comprising the cutter for machining back spot facing according to any one of claims 1 to 6, a motor, a sliding rail, a frame and an electromagnetic base, wherein the electromagnetic base is arranged at the bottom of the frame, the motor is slidably mounted on one side of the frame through the sliding rail, and the cutter is fixed on a rotating shaft of the motor through a drill chuck.

8. The magnetic drill according to claim 7, wherein the slide rail is provided with a scale for measuring the back spot facing depth.