Non-standard composite boring cutter
By designing a non-standard composite boring tool, the problem of frequent tool changes in turbine housing machining was solved, enabling simultaneous machining of multiple holes and improving production efficiency.
Patent Information
- Application Number
- CN202520060955.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-10
AI Technical Summary
During the turbine housing machining process, three internal boring tools, one face milling cutter, and one external sleeve boring tool are required. Frequent tool changes increase operational complexity and affect production efficiency.
Design a non-standard composite boring tool, including a first, second, and third columnar body arranged coaxially, each equipped with a first, second, and third cutting tool, which can complete rough boring of one outer circle, one set of countersunk holes, and two inner holes in one operation, reducing tool change time.
By using non-standard composite boring tools, multiple holes of different sizes can be machined simultaneously, reducing tool change time and improving production efficiency.
Smart Images
Figure CN223684461U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical processing technical field, specifically, relate to a non-standard composite boring cutter. BACKGROUND
[0002] Turbine shell is the key part in turbocharger, is located in engine intake and exhaust system, connects exhaust pipe and intermediate shell, simultaneously as alloy impeller's protective cover. The main function of turbine shell is guiding the exhaust gas of engine into turbine in turbine chamber, utilizes the inertial force of exhaust gas to push turbine rotation, and then drives the coaxial impeller rotation, pressurizes air and makes it supercharged into cylinder. This can improve the pressure and density of air, thereby burns more fuel, increases the output power of engine.
[0003] In the turbine shell processing process, needs to carry out the trepanning to the processing surface such as Figure 1 The section is as shown in Figure 2 One external circle, one set of counterbore and two inner holes need to be completed during processing. In the conventional processing mode, three inner hole boring cutters, one surface milling cutter and one external circle sleeve boring cutter are needed to complete, and frequent tool replacement increases the complexity of operation. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a non-standard composite boring cutter, which has a scientific and reasonable structure design, can rough-bore one external circle, one set of counterbore and two inner holes required to be processed to a predetermined size at a time, reduces tool changing time and improves production efficiency.
[0005] The embodiment of the utility model is implemented as follows:
[0006] A non-standard composite boring cutter comprises a cutter head, the cutter head comprises coaxially arranged and integrally formed first, second and third columnar bodies, the diameters of the first, second and third columnar bodies are successively reduced, the first columnar body is provided with a plurality of first blades at intervals along the circumferential direction thereof, the plurality of first blades are located at one end of the first columnar body close to the second columnar body, the second columnar body is provided with a plurality of second blades at intervals along the circumferential direction thereof, the second blades are located at one end of the second columnar body close to the third columnar body, and the third columnar body is provided with a plurality of third blades at intervals along the circumferential direction thereof, and the third blades are located at one end of the third columnar body away from the second columnar body.
[0007] Further, in other preferable embodiments of the utility model, a plurality of first chip removal grooves are arranged on the cutter head, and the plurality of first chip removal grooves are arranged along the axial direction of the cutter head; the first chip removal grooves have first side walls coplanar with the axis of the cutter head, and the first, second and third blades are all located on the first side walls.
[0008] Further, in other preferable embodiments of the utility model, the number of first chip groove, first blade, second blade and third blade is equal, one first chip groove, one first blade, one second blade and one third blade constitute a chip removal unit; a plurality of chip removal units are arranged along the circumference of the tool head.
[0009] Further, in other preferable embodiments of the utility model, in each chip removal unit, the first blade, the second blade and the third blade are located on the side wall of the same side of the first chip groove.
[0010] Further, in other preferable embodiments of the utility model, the outer edge of the first blade and the second blade forms a first cutting edge and a second cutting edge respectively; the extension line of the first cutting edge and the second cutting edge intersects with the axis of the tool head on the side away from the first columnar body.
[0011] Further, in other preferable embodiments of the utility model, the outer edge of the third blade forms a third cutting edge, and the third cutting edge is parallel to the axis of the tool head.
[0012] Further, in other preferable embodiments of the utility model, the non-standard composite boring cutter further comprises a cutter body detachably connected with the tool head, and the cutter body is matched with the first columnar body along the axial direction of the tool head.
[0013] Further, in other preferable embodiments of the utility model, the cutter body is provided with a convex rib on the side facing the tool head, and the convex rib is arranged along the circumference of the cutter body and forms an annular groove with the tool head.
[0014] Further, in other preferable embodiments of the utility model, a plurality of second chip grooves are arranged on the cutter body, the number of the second chip grooves is equivalent to that of the first chip grooves, each chip removal unit comprises one second chip groove, and the second chip groove is in communication with the annular groove and the first chip groove through the convex rib.
[0015] Further, in other preferable embodiments of the utility model, the second chip groove comprises a second side wall coplanar with the first side wall; and the inner edge of the convex rib is provided with a fourth blade head, and the fourth blade head is located on the second side wall.
[0016] The embodiment of the utility model has the advantages of:
[0017] The embodiment of the utility model provides a non-standard composite boring cutter, which comprises a tool head, the tool head comprises coaxially arranged and integrally formed first, second and third columnar bodies, the diameters of the first, second and third columnar bodies are sequentially reduced; the first, second and third columnar bodies are respectively provided with first, second and third blades, multiple size inner holes and counterbores can be machined without changing the blades, thereby reducing the blade changing time and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as limiting the scope. For those skilled in the art, based on the embodiments in the present application, all other embodiments obtained without creative labor fall within the scope of the present application.
[0019] Figure 1 A schematic view of the turbine shell provided by the present application;
[0020] Figure 2 A sectional view of the turbine shell provided by the present application;
[0021] Figure 3 A schematic view of the non-standard composite boring cutter provided by the embodiments of the present application;
[0022] Figure 4 A sectional view of the non-standard composite boring cutter provided by the embodiments of the present application.
[0023] Figure legend: 100-turbine shell; 110-working surface; 111-first inner hole; 112-second inner hole; 113-counterbore; 114-outer circle; 200-non-standard composite boring cutter; 210-tool head; 211-first columnar body; 2111-first blade; 212-second columnar body; 2121-second blade; 213-third columnar body; 2131-third blade; 214-first chip flute; 220-tool body; 221-second chip flute; 222-ridge; 2221-fourth blade; 223-groove. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0025] In the description of the utility model, it is understood that the directions or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0026] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0027] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. Embodiment
[0029] The embodiment provides a non-standard composite boring cutter 200, which is used for machining a turbine shell 100, and the turbine shell 100 has a structure as shown in Figure 1 , and needs to be drilled on the working surface 110. The cross section is as shown in Figure 2As shown, in the machining process, a first inner hole 111 with a diameter of 33.5±0.1mm, a second inner hole 112 with a diameter of 36.6±0.1mm, a counterbore 113 with a diameter of 49±0.1mm, and a rough boring of an outer circle 114 with an outer diameter of 65.5±0.1mm need to be completed.
[0030] As shown in Figure 3 and Figure 4 The non-standard composite boring cutter 200 includes a cutter head 210, which includes coaxially arranged and integrally formed first, second and third cylindrical bodies 211, 212 and 213, the diameters of the first, second and third cylindrical bodies 211, 212 and 213 gradually decrease; the first cylindrical body 211 is provided with a plurality of first blades 2111 spaced along the circumference thereof, and the plurality of first blades 2111 are located at one end of the first cylindrical body 211 close to the second cylindrical body 212; the second cylindrical body 212 is provided with a plurality of second blades 2121 spaced along the circumference thereof, and the second blades 2121 are located at one end of the second cylindrical body 212 close to the third cylindrical body 213; the third cylindrical body 213 is provided with a plurality of third blades 2131 spaced along the circumference thereof, and the third blades 2131 are located at one end of the third cylindrical body 213 away from the second cylindrical body 212.
[0031] The distance between the outermost edge of the first blade 2111 and the axis of the cutter head 210 is 16.25±0.1mm, which is slightly smaller than the radius of the first inner hole 111, and is used to complete the rough machining of the first inner hole 111; the distance between the outermost edge of the second blade 2121 and the axis of the cutter head 210 is 17.8±0.1mm, which is slightly smaller than the radius of the second inner hole 112, and is used to complete the rough machining of the second inner hole 112; the distance between the outermost edge of the third blade 2131 and the axis of the cutter head 210 is 24±0.1mm, which is slightly smaller than the radius of the counterbore 113, and is used to complete the rough machining of the counterbore 113.
[0032] Further, as shown in Figure 3 and Figure 4As shown, the tool head 210 is provided with a plurality of first chip grooves 214, which are arranged along the axial direction of the tool head 210; the first chip groove 214 has a first side wall coplanar with the axis of the tool head 210, and the first blade 2111, the second blade 2121 and the third blade 2131 are all located on the first side wall. The number of the first chip groove 214, the first blade 2111, the second blade 2121 and the third blade 2131 is equal, and one first chip groove 214, one first blade 2111, one second blade 2121 and one third blade 2131 constitute a chip removal unit; a plurality of chip removal units are arranged at intervals along the circumferential direction of the tool head 210. In each chip removal unit, the first blade 2111, the second blade 2121 and the third blade 2131 are all located on the side wall of the same side of the first chip groove 214. The first blade 2111, the second blade 2121 and the third blade 2131 are oriented in the same direction, so that only one direction needs to be maintained during cutting to complete the drilling of the three holes. In this embodiment, two chip removal units are provided, and the two chip removal units are spaced apart by 180 degrees.
[0033] The outer edges of the first blade 2111 and the second blade 2121 form first and second cutting edges respectively; the extension lines of the first and second cutting edges intersect the axis of the tool head 210 at a side away from the first cylindrical body 211. The outer edge of the third blade 2131 forms a third cutting edge, which is parallel to the axis of the tool head 210. The inclined design is more convenient for tool feeding and reduces the wear of the blades, achieving better cutting effect.
[0034] Alternatively, the first blade 2111, the second blade 2121 and the third blade 2131 are all connected between the tool head 210 and the locking screw, which facilitates disassembly and replacement.
[0035] In addition, as shown in Figure 3 and Figure 4 The non-standard composite boring tool 200 further comprises a tool body 220 detachably connected with the tool head 210, and the tool body 220 is matched with the first cylindrical body 211 along the axial direction of the tool head 210. The tool body 220 is provided with a convex rib 222 on the side facing the tool head 210, and the convex rib 222 is arranged along the circumferential direction of the tool body 220 and forms an annular groove 223 with the tool head 210. The tool body 220 is provided with a plurality of second chip grooves 221, and the number of the second chip grooves 221 is equal to that of the first chip grooves 214; each chip removal unit comprises one second chip groove 221, and the second chip groove 221 penetrates through the convex rib 222 and is in communication with the annular groove 223 and the first chip groove 214. The second chip groove 221 comprises a second side wall coplanar with the first side wall; the inner edge of the convex rib 222 is provided with a fourth blade 2221, and the fourth blade 2221 is located on the second side wall. The fourth blade 2221 can be used for rough machining of the outer circle 114, further improving the machining efficiency.
[0036] In summary, the utility model embodiment provides a kind of non-standard composite boring cutter 200, including tool bit 210, tool bit 210 includes coaxially arranged and integrally formed first columnar body 211, second columnar body 212 and third columnar body 213, the diameter of first columnar body 211, second columnar body 212, third columnar body 213 is reduced in turn;First columnar body 211, second columnar body 212 and third columnar body 213 are respectively provided with first blade 2111, second blade 2121 and third blade 2131, can realize the processing of multiple size inner hole, counterbore 113 without changing tool, to reduce the tool changing time, improve production efficiency.
[0037] The above only for the preferred embodiment of the utility model, and not for limiting the utility model, for the skilled person in the art, the utility model can have various changes and changes.For any modification, equivalent replacement, improvement, etc., within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A non-indexable compound boring tool, characterized by, The tool head comprises coaxially arranged and integrally formed first, second and third columnar bodies, the diameters of the first, second and third columnar bodies gradually decrease; The first columnar body is provided with a plurality of first blades at an end thereof close to the second columnar body, the second columnar body is provided with a plurality of second blades at an end thereof close to the third columnar body, and the third columnar body is provided with a plurality of third blades at an end thereof away from the second columnar body.
2. The non-indexable compound boring tool according to claim 1, wherein The tool head is provided with a plurality of first chip removal grooves arranged along the axial direction of the tool head, and each first chip removal groove has a first side wall coplanar with the axis of the tool head, and the first, second and third blades are arranged on the first side wall.
3. The non-indexable compound boring tool according to claim 2, wherein The number of the first chip removal grooves, the first blades, the second blades and the third blades is equal, and one first chip removal groove, one first blade, one second blade and one third blade form a chip removal unit, and a plurality of chip removal units are arranged along the circumferential direction of the tool head.
4. The non-indexable compound boring tool according to claim 3, wherein In each chip removal unit, the first, second and third blades are arranged on the same side wall of the first chip removal groove.
5. The non-indexable compound boring tool according to claim 4, characterized in that The outer edges of the first and second blades form first and second cutting edges, respectively, and the extensions of the first and second cutting edges intersect the axis of the tool head at a side away from the first columnar body.
6. The non-indexable compound boring tool according to claim 5, wherein The outer edge of the third blade forms a third cutting edge parallel to the axis of the tool head.
7. The non-indexable compound boring tool according to claim 6, wherein The non-standard composite boring tool further comprises a tool body detachably connected to the tool head, and the tool body is matched with the first columnar body along the axial direction of the tool head.
8. The non-indexable compound boring tool according to claim 7, wherein The tool body is provided with a convex rib on a side thereof facing the tool head, and the convex rib is arranged along the circumferential direction of the tool body and forms an annular groove with the tool head.
9. The non-indexable compound boring tool according to claim 8, wherein The tool body is provided with a plurality of second chip removal grooves, and the number of the second chip removal grooves is equal to that of the first chip removal grooves, and each chip removal unit comprises one second chip removal groove, and the second chip removal groove communicates with the annular groove, the first chip removal groove and the convex rib.
10. The non-indexable compound boring tool according to claim 9, wherein The second chip removal groove comprises a second side wall coplanar with the first side wall, and the convex rib is provided with a fourth blade at an inner edge thereof, and the fourth blade is located on the second side wall.