CN112589167A - Metal tube flanging hole inward-flanging forming cutter - Google Patents
Metal tube flanging hole inward-flanging forming cutter Download PDFInfo
- Publication number
- CN112589167A CN112589167A CN202011470270.0A CN202011470270A CN112589167A CN 112589167 A CN112589167 A CN 112589167A CN 202011470270 A CN202011470270 A CN 202011470270A CN 112589167 A CN112589167 A CN 112589167A
- Authority
- CN
- China
- Prior art keywords
- tool
- flanging hole
- cutting edge
- metal tube
- cutter
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Drilling Tools (AREA)
Abstract
The application provides a tubular metal resonator turn-ups downthehole upset shaping cutter includes cutter top, cutter middle part and the cutter bottom that the integral type formed in proper order, be provided with the top cutting edge mechanism that is used for boring the turn-ups hole on the cutter top, be provided with middle part inclined plane on the cutter middle part, middle part inclined plane's both sides respectively with the outer wall at cutter middle part forms the middle part cutting edge. The structure and the cutting edge structure in the middle of the cutter are improved, so that the inward-turning groove structure of the copper pipe is realized.
Description
Technical Field
The invention relates to the field of machine tool machining equipment, in particular to a metal pipe flanging hole inward-flanging forming cutter.
Background
The copper pipe flanging hole is used for connecting large and small copper pipes among different heat exchangers of the air conditioner and is formed in a welding mode. As shown in fig. 1, in the prior art, a process of flanging a copper pipe hole is turned outwards, and in a welding process of large and small copper pipes, a contact position protrudes, solder leaks outwards, poor welding is caused, and a part of quality problems of leaking refrigerants are caused by the reason.
Therefore, it is necessary to develop a new type of machining tool, which can form the flanged hole into an inward-flanged type when the flanged hole is formed in the copper pipe, so as to overcome the above problems.
Disclosure of Invention
To the problem among the above-mentioned prior art, this application has provided a tubular metal resonator flanging hole enstrophe shaping cutter, and it has realized the groove structure of copper pipe enstrophe through structure and the blade structure that improves the cutter middle part.
In a first aspect, the application provides a tubular metal resonator flanging hole enstrophe shaping cutter includes cutter top, cutter middle part and the cutter bottom that the integral type formed in proper order, be provided with the top cutting edge mechanism that is used for boring the flanging hole on the cutter top, be provided with middle part inclined plane on the cutter middle part, middle part inclined plane's both sides respectively with the outer wall at cutter middle part forms middle part cutting edge.
In a possible embodiment of the first aspect, the angle between the middle inclined plane and the tool axis is 100 ° to 180 °, and the angle of the middle cutting edge formed by the two middle cutting edges is-20 ° to +20 °.
In a possible embodiment of the first aspect, the angle between the middle inclined plane and the tool axis is 105 °.
In one possible embodiment of the first aspect, the top blade mechanism comprises two top blades distributed centrosymmetrically, and each top blade is in the shape of a concave arc surface. Through the embodiment, a two-edge-three-edge structure is formed, when the drill bit is machined, two arc edges of two top cutting edges are in contact simultaneously, compared with a traditional drill bit only, the downward drilling force is dispersed by 3 times, the effect of not forming downward depressions is achieved, and the production requirement is met.
In a possible embodiment of the first aspect, the diameter of the top of the tool is 4.3mm, and the radius of the circular arc shape of the top cutting edge is 3.4 mm.
In one possible embodiment of the first aspect, the top blade mechanism further comprises a junk slot disposed in correspondence with the top edge.
In one possible embodiment of the first aspect, the tool bottom is provided with a deburring mechanism. With this embodiment, the burr whose top surface is turned up can be removed.
In one possible embodiment of the first aspect, the deburring mechanism includes a plurality of protrusions formed on an outer wall of the bottom of the tool.
In a possible embodiment of the first aspect, the protrusion is a bottom milling edge formed by cutting or pressing an outer wall of the tool bottom.
In a possible embodiment of the first aspect, the bottom milling cutting edge extends helically in axial direction on an outer wall of the tool bottom.
In one possible embodiment of the first aspect, the deburring mechanism is four protrusions that are uniformly open in the circumferential direction of the tool bottom.
In one possible embodiment of the first aspect, the metal tube flanging hole inside-flanging tool is made of tungsten steel.
The application provides a tubular metal resonator turn-ups downthehole turn-ups forming tool compares in prior art, has following beneficial effect:
1) the structure of two cutting edges and three cutting edges is designed on the top of the cutter, so that the problem of sinking of the metal pipe in the processing process is avoided;
2) the top of the cutter is provided with the inclined plane, and a top cutting edge mechanism is formed, so that the effect that the flanging hole is inwards turned is realized;
3) through the deburring mechanism of tip design arch form, can reach the effect of burring.
The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram showing a copper tube with an upturned flanging hole in the prior art;
FIG. 2 shows a front view of a flanging hole inside-flanging tool for metal tubes in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a partial structure of a flanging hole inside-flanging tool for metal tubes according to an embodiment of the present invention;
FIG. 4 shows a schematic top view of a flanging hole inside-flanging tool for metal tubes according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a partial structure of a inside-flanging hole-flanging die-forming tool for metal pipes according to an embodiment of the present invention;
fig. 6 shows a schematic diagram of a hole flanging height according to an embodiment of the invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
List of reference numerals:
100-forming a cutter; 110-a cutter top; 120-the middle of the cutter; 130-the bottom of the tool; 140-a tool shank; 111-top edge; 112-a central tip; 113-edge endpoint; 114-a junk slot; 121-middle inclined plane; 122-middle blade; 131-protrusions; 132-an arc-shaped groove; 200-flanging hole.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 2 to 5 are schematic structural views of the tool 100 for forming a flanged hole of a metal pipe according to the present invention. As shown in fig. 2, the forming tool 100 at least comprises a tool top 110, a tool middle 120, a tool bottom 130 and a tool shank 140, which are formed as a unitary component by an integral forming process, so as to enhance the reliability of the forming tool during use, wherein the tool top 110, the tool middle 120, the tool bottom 130 and the tool shank 140 are sequentially connected, the tool top 110 is used for drilling a flanging hole on the wall of a metal pipe, the tool middle 120 is used for turning the flanging hole 200 outwards to avoid poor welding during welding, and the tool bottom 130 is used for removing burrs around the formed flanging hole 200.
Specifically, as shown in fig. 2 to 5, the cutter top portion 110 is cylindrical in shape and is formed with a top blade mechanism, the top blade mechanism includes two top cutting edges 111 (fig. 4) symmetrically distributed at the center, each top cutting edge 111 is a circular arc type structure opened at the end of the cutter top portion 110, one of the two cutting edge end points of the circular arc type structure is connected at the center of the cutter top portion 110 to form a center tip 112 (corresponding to the drill point of a conventional drilling tool), and the other cutting edge end point 113 is protruded at the edge of the cutter top portion, thereby forming a two-edge-three-edge configuration.
Alternatively, the central tip 112 may be a point-like structure or a shorter linear structure (as shown in FIG. 4).
Further optionally, the central tip 112 is higher than the edge end points 113 on both sides. Because the wall thickness of the copper pipe is only 0.8-1.5 mm, if the common drill bit is adopted for processing, the defect of recess is caused, and the processing requirement is not met. And through the cutter top 110 of this application, when processing, this central point 112 is used for getting the hole at the pipe wall brill, then, two arc limits of two top blades contact the pipe wall simultaneously, and only the drill point contrast with the tradition, the power of drilling down has carried out 3 times's dispersion, has avoided stress concentration on the pipe wall and the condition of undercut to appear, satisfies the production requirement.
As shown in fig. 5, in this particular embodiment, the diameter of the top of the tool is 4.3mm, and the radius r0 of the arc shape of each top cutting edge 111 is 3.4 mm.
In the embodiment herein, as shown in fig. 3, the tool top 110 should also include a chip groove 114 corresponding to each top edge to discharge metal chips generated during machining.
In one embodiment, the tool center portion 120 of the forming tool 100 is used to turn the inside of the flanging hole drilled from the top of the tool inward, forming an inside-turned flanging hole 200. In particular, the tool center 120 is also cylindrical, and has a center inclined plane 121 formed on its outer wall, the center inclined plane 121 having an inclination angle α (fig. 3) with respect to the axis of the tool center 120 (or the forming tool 100), which varies depending on the position of the plane, and which is capable of extending in at least the axial direction of the outer wall of the tool center 120, the two sides of the plane forming a center blade 122 together with the outer wall of the tool center, respectively, and the two center blades 122 forming a center cutting edge for turning the burring hole 200 inward.
In an alternative embodiment, the tilt angle α ranges from 100 ° to 180 °, and the angle of the middle cutting edge (i.e., the angle between the two middle blades 122) ranges from-20 ° to +20 °. Preferably, the inclination angle α is 105 °.
Here, the middle inclined plane 121 may be formed by, for example, cutting or pressing.
The tool bottom 130 of the forming tool 100 of the present application may also be formed with a deburring mechanism for removing hole edge burrs generated during the metal pipe machining process.
In one embodiment, as shown in fig. 3 and 4, the deburring structure may be a plurality of protrusions 131 provided on the outer wall of the tool bottom 130, and the plurality of protrusions 131 can remove burrs around the burring hole 200 in a cutting manner during the rotational machining of the forming tool 100. Preferably, the plurality of protrusions 131 are integrally formed with the cutter base 130.
Optionally, the protrusion 131 is shaped by cutting or pressing the outer wall of the tool bottom 130Resulting in a bottom milling edge (as shown in fig. 3). In particular, on the outer wall of the tool bottom 130, an arc-shaped groove 132 may be provided, which arc-shaped groove 132 extends in an obliquely upward direction, while the edge of the arc-shaped groove 132 forms, together with the outer wall of the tool bottom 130, a bottom milling edge for deburring, which extends spirally in the axial direction on the outer wall of the tool bottom. Furthermore, the arc-shaped groove 132 has a varying depth in the radial direction, so that the milling cutting edge also has a varying depth in the radial direction, the maximum depth h of whichmaxMay be 1.9mm as shown in fig. 4.
As shown in fig. 3-5, 4 arc-shaped grooves are opened on the outer wall of the tool bottom 130 along the circumferential direction, so as to form 4 bottom milling cutting edges (or protrusions) uniformly distributed along the circumferential direction.
In the machining process of combining the forming cutter 100 with the drilling and flanging all-in-one machine, the machining effects of firstly drilling, then turning inwards and finally deburring are achieved. The operation parameters (such as the edge-drawing distance, the drilling distance and the eccentric distance) of the drilling and flanging integrated machine can be adjusted according to different flanging thicknesses.
Additionally, the metal pipe flanging hole inside-flanging tool 100 should have high hardness and strength in consideration of its processing environment requirements, and preferably, it is made of tungsten steel.
In the embodiment provided herein, the forming tool 100 has a length l as shown in FIG. 20Is 53.1 mm; wherein the length l of the tool top 1101Is 3.0mm, d1The diameter is 4.3 mm; length l of the middle part 120 of the tool2Is 5.0 mm; length l of tool base 1303Is 10.0mm, diameter d38.0 mm; length l of tool shank 140435.0mm, diameter d4Is 6.0 mm.
In the actual production process, the technological requirements of the copper pipe flanging hole 200 are as follows: the copper pipe flanging hole is used for connecting large and small copper pipes among different heat exchangers of the air conditioner and is carried out in a welding mode. The requirements of the flanging hole on specification, height, material property and the like are as shown in the following table 1, wherein the side A is used for welding the heat exchanger, and the side B is used for welding a pipeline at the joint side of the gas collecting pipe assembly.
TABLE 1 Specification selection table for branch/gas collecting tube assembly of heat exchanger
Referring to fig. 6, the height H of the large flanging hole (ID phi 12.2 or more) has the following correspondence with other parameters:
20：d＝D-2(H-0.43r-0.72t)。
d, the aperture of the pre-punched hole,
d: the aperture of the flanging hole is small,
h: the height of the flanging hole is higher than that of the flanging hole,
r is the radius of the transition circle,
t is the wall thickness.
According to the calculation, the flanging height of 3mm can be completely realized, and the specific requirements are shown in the following table 2.
TABLE 2 Flanging height of the flanging hole
According to the forming tool for the inward flanging of the metal pipe flanging hole, the structure of two cutting edges and three cutting edges is designed at the top of the cutter, so that the problem of sinking of the metal pipe in the machining process is avoided; the inclined plane is designed at the top of the cutter, and a top cutting edge mechanism is formed, so that the effect that the flanging hole is turned inwards is realized, and the problem of cold leakage medium quantity can be reduced by 10%; through the deburring mechanism of protruding form in tip design, can reach the effect of burring, efficiency promotes 5%.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011470270.0A CN112589167B (en) | 2020-12-14 | 2020-12-14 | Metal pipe flanging hole inward turning forming tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011470270.0A CN112589167B (en) | 2020-12-14 | 2020-12-14 | Metal pipe flanging hole inward turning forming tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112589167A true CN112589167A (en) | 2021-04-02 |
| CN112589167B CN112589167B (en) | 2024-11-15 |
Family
ID=75195179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011470270.0A Active CN112589167B (en) | 2020-12-14 | 2020-12-14 | Metal pipe flanging hole inward turning forming tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112589167B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794486A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Compound tool applicable to high-speed and accurate holing on aircraft panel |
| CN103817743A (en) * | 2014-02-18 | 2014-05-28 | 北京工商大学 | Drilling-milling compound tool and drilling and milling method of fibrous composite |
| CN203735434U (en) * | 2014-01-23 | 2014-07-30 | 昆明桂丰机械有限公司 | Pig fodder forming annular mould and expanding drill for machining forming holes |
| CN205967542U (en) * | 2016-08-29 | 2017-02-22 | 郑州市钻石精密制造有限公司 | Integrative cutter of rimer |
| CN206898450U (en) * | 2016-12-08 | 2018-01-19 | 珠海市科箭自动化设备有限公司 | Drill bit for the flange all-in-one that drills |
| CN111360301A (en) * | 2020-03-24 | 2020-07-03 | 上海拓璞数控科技股份有限公司 | Automatic hole-making dimple cutter suitable for weak rigidity equipment |
| CN214185405U (en) * | 2020-12-14 | 2021-09-14 | 珠海格力精密模具有限公司 | Metal tube flanging hole inward-flanging forming cutter |
-
2020
- 2020-12-14 CN CN202011470270.0A patent/CN112589167B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794486A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Compound tool applicable to high-speed and accurate holing on aircraft panel |
| CN203735434U (en) * | 2014-01-23 | 2014-07-30 | 昆明桂丰机械有限公司 | Pig fodder forming annular mould and expanding drill for machining forming holes |
| CN103817743A (en) * | 2014-02-18 | 2014-05-28 | 北京工商大学 | Drilling-milling compound tool and drilling and milling method of fibrous composite |
| CN205967542U (en) * | 2016-08-29 | 2017-02-22 | 郑州市钻石精密制造有限公司 | Integrative cutter of rimer |
| CN206898450U (en) * | 2016-12-08 | 2018-01-19 | 珠海市科箭自动化设备有限公司 | Drill bit for the flange all-in-one that drills |
| CN111360301A (en) * | 2020-03-24 | 2020-07-03 | 上海拓璞数控科技股份有限公司 | Automatic hole-making dimple cutter suitable for weak rigidity equipment |
| CN214185405U (en) * | 2020-12-14 | 2021-09-14 | 珠海格力精密模具有限公司 | Metal tube flanging hole inward-flanging forming cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112589167B (en) | 2024-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5447129B2 (en) | Drill with coolant hole | |
| JP4894054B2 (en) | Twist drill | |
| JP2003530224A (en) | Drill with improved cutting insert configuration | |
| JPS6254614A (en) | Cutting tool | |
| CN214185405U (en) | Metal tube flanging hole inward-flanging forming cutter | |
| WO2018206400A1 (en) | Drill body and drill | |
| CN112589167A (en) | Metal tube flanging hole inward-flanging forming cutter | |
| US7201544B2 (en) | Deep hole boring drill | |
| CN206169358U (en) | Drill bit in processing car door rotating joints hole | |
| EP3401043A1 (en) | Drill body and drill | |
| CN112118928B (en) | Cutting tool for drill bit and drill bit | |
| CN114789272B (en) | Drilling tool | |
| CN113020666B (en) | A composite tool for non-metal composite materials | |
| CN217095843U (en) | Drill point structure | |
| CN212419775U (en) | Straight groove step drill | |
| CN204221057U (en) | J type seamed edge correction straight fluted drill | |
| CN212734348U (en) | Steel plate drilling tool with chamfering function | |
| CN114932251A (en) | A drilling tool | |
| CN221983979U (en) | High-efficiency milling end mill | |
| CN207103921U (en) | The hidden hole drilling in interior cold hole | |
| TWM608017U (en) | Cutting tool having excellent reaming precision and durability | |
| CN219881389U (en) | Full-back rotary-insert type replaceable drill tip | |
| JP3134011U (en) | Rotary cutting tool | |
| JP5319928B2 (en) | Boring tool and drilling method | |
| JP2003191116A (en) | Three-flute drill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |