CN212898504U - Conical diamond hob for shield machine - Google Patents
Conical diamond hob for shield machine Download PDFInfo
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- CN212898504U CN212898504U CN202022056927.0U CN202022056927U CN212898504U CN 212898504 U CN212898504 U CN 212898504U CN 202022056927 U CN202022056927 U CN 202022056927U CN 212898504 U CN212898504 U CN 212898504U
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- cutter
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Abstract
The embodiment of the utility model relates to tunnel construction machinery technical field, concretely relates to a toper diamond hobbing cutter for shield constructs machine is last, be circular shape hobbing cutter body including the cross-section, hobbing cutter body's surface circumference is equipped with the tooth of evenly arranging, be equipped with the recess in the tooth, be equipped with the cutter in the recess, the cutter is including being fixed in the carbide base in the recess, the top surface of carbide base is equipped with the outer polycrystalline diamond tool bit of protrusion recess, the top surface of polycrystalline diamond tool bit is formed with the cutting edge. The utility model discloses beneficial effect does: the conical diamond hob has long service life, reduces the replacement frequency of the hob body, reduces the cost and improves the tunneling efficiency of the shield tunneling machine.
Description
Technical Field
The utility model relates to a tunnel construction machinery technical field, concretely relates to a toper diamond hobbing cutter for shield constructs machine is last.
Background
The shield construction method is one of the tunnel construction methods with the highest safety guarantee at present, and the shield machine is used for fracturing and scraping the front rock and soil through the cutter on the cutter head in the construction process, so that the key process for realizing the tunneling function of the shield machine is realized, wherein the hob is arranged on the cutter head of the shield machine, is mainly used for breaking rock and is an important cutter for influencing the tunneling efficiency of the shield machine. However, the existing hob top cutting edge material is mostly common quenched steel or hard alloy, is not wear-resistant enough, has short service life, and directly influences the tunneling efficiency of the shield tunneling machine.
Polycrystalline diamond compacts (hereinafter referred to as PDC) are composite superhard materials sintered from diamond micropowder and a hard alloy substrate as raw materials under the conditions of high temperature and ultrahigh pressure, the polycrystalline diamond compacts well combine the performance advantages of the polycrystalline diamond and the hard alloy, have the hardness and wear resistance of the diamond, the strength and impact toughness of the hard alloy, are excellent cutting tools and wear-resistant tool materials, and are widely applied to the fields of nonferrous metal, nonmetal cutting processing, petroleum, coal, geological drilling and the like.
The conical polycrystalline diamond composite sheet is reasonably embedded on the body of the hobbing cutter, so that the service life of the cutting edge of the hobbing cutter can be prolonged, and the diamond is conical, so that the tunneling efficiency of the shield tunneling machine is improved.
Therefore, there is a need for a tapered diamond hob for use on a shield machine that overcomes the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the embodiment of the utility model provides a toper diamond hobbing cutter for shield constructs machine is last, be circular shape hobbing cutter body including the cross-section, hobbing cutter body's surface circumference is equipped with the tooth of evenly arranging, be equipped with the recess in the tooth, be equipped with the cutter in the recess, the cutter is including being fixed in the carbide base in the recess, the top surface of carbide base is equipped with the outer polycrystalline diamond tool bit of protruding recess, the top surface of polycrystalline diamond tool bit is formed with the cutting edge.
Further, the total height of the cutter is 13-40mm, the thickness of the polycrystalline diamond cutter head is 2.0-4.0mm, and the diameter of the hard alloy base is 16-25 mm.
Further, the polycrystalline diamond tool bit is conical.
Further, the top end surface of the polycrystalline diamond cutter head comprises two crossed inclined surfaces, and a cutting edge is formed between the two inclined surfaces.
Further, the top end surface of the polycrystalline diamond cutter head comprises three inclined planes, and a cutting edge is formed between every two adjacent inclined planes.
Further, the top end surface of the polycrystalline diamond cutter head comprises four inclined planes, and a cutting edge is formed between every two adjacent inclined planes.
Furthermore, the included angle between two adjacent inclined surfaces is 120-170 degrees.
The utility model discloses beneficial effect does: the high-hardness conical polycrystalline diamond composite sheet is reasonably embedded in the circumferential direction of the hob body, the service life of the cutting edge of the hob can be prolonged, and the diamond is conical, so that the tunneling efficiency of the shield tunneling machine is improved.
Drawings
Fig. 1 is a front view of a hob body in the present invention;
FIG. 2 is a side view of the hob body of the present invention;
FIG. 3 is an enlarged view of a portion of area A of FIG. 2;
fig. 4 is a schematic structural view of a cutter in embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a cutter in embodiment 2 of the present invention;
fig. 6 is a schematic structural view of a cutter in embodiment 3 of the present invention.
In the figure:
1. a hob body; 11. teeth; 12. a groove;
2. a cutter; 21. a polycrystalline diamond cutter head; 211. a blade; 22. a cemented carbide base.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1 to 4, the embodiment of the utility model discloses a toper diamond hobbing cutter for shield constructs machine is last, be circular shape hobbing cutter body 1 including the cross-section, hobbing cutter body 1's surface circumference is equipped with the tooth 11 of evenly arranging, be equipped with recess 12 in the tooth 11, be equipped with cutter 2 in the recess 12, cutter 2 is including being fixed in the carbide base 22 in recess 12, carbide base 22's top surface is equipped with the outer polycrystalline diamond tool bit 21 of protrusion recess 12, polycrystalline diamond tool bit 21's top surface is formed with cutting edge 211.
The total height of the cutter 2 is 13-40mm, the thickness of the polycrystalline diamond cutter head 21 is 2.0-4.0mm, and the diameter of the hard alloy base 22 is 16-25 mm.
Wherein the polycrystalline diamond segments 21 are tapered.
The top end surface of the polycrystalline diamond segment 21 includes two intersecting inclined surfaces, and a cutting edge 211 is formed between the two inclined surfaces.
Wherein, the included angle between two adjacent inclined planes is 120-170 degrees.
Example 2
Referring to fig. 1 and 5, the embodiment of the utility model discloses a toper diamond hobbing cutter for shield constructs machine is last, be circular shape hobbing cutter body 1 including the cross-section, hobbing cutter body 1's surface circumference is equipped with the tooth 11 of evenly arranging, be equipped with recess 12 in the tooth 11, be equipped with cutter 2 in the recess 12, cutter 2 is including being fixed in the carbide base 22 in recess 12, carbide base 22's top surface is equipped with the outer polycrystalline diamond tool bit 21 of protrusion recess 12, polycrystalline diamond tool bit 21's top surface is formed with cutting edge 211.
The total height of the cutter 2 is 13-40mm, the thickness of the polycrystalline diamond cutter head 21 is 2.0-4.0mm, and the diameter of the hard alloy base 22 is 16-25 mm.
Wherein the polycrystalline diamond segments 21 are tapered.
The top end surface of the polycrystalline diamond segment 21 includes three inclined surfaces, and cutting edges 211 are formed between adjacent inclined surfaces, and 3 cutting edges 211 are formed.
Wherein, the included angle between two adjacent inclined planes is 120-170 DEG
Example 3
Referring to fig. 1 and 6, the embodiment of the utility model discloses a toper diamond hobbing cutter for shield constructs machine is last, be circular shape hobbing cutter body 1 including the cross-section, hobbing cutter body 1's surface circumference is equipped with the tooth 11 of evenly arranging, be equipped with recess 12 in the tooth 11, be equipped with cutter 2 in the recess 12, cutter 2 is including being fixed in the carbide base 22 in recess 12, carbide base 22's top surface is equipped with the outer polycrystalline diamond tool bit 21 of protrusion recess 12, polycrystalline diamond tool bit 21's top surface is formed with cutting edge 211.
The total height of the cutter 2 is 13-40mm, the thickness of the polycrystalline diamond cutter head 21 is 2.0-4.0mm, and the diameter of the hard alloy base 22 is 16-25 mm.
Wherein the polycrystalline diamond segments 21 are tapered.
Wherein the top end surface of the polycrystalline diamond segment 21 includes four slopes, and cutting edges 211 are formed between adjacent slopes, and 4 cutting edges 211 are formed in total.
Wherein, the included angle between two adjacent inclined planes is 120-170 degrees.
In the embodiment 1-3, the teeth 11 are uniformly distributed in the circumferential direction of the hob body 1, and the cutter 2 made of the high-hardness conical polycrystalline diamond compact is stably embedded in the groove 12 formed in the teeth 11, so that the service life of the cutting edge of the hob can be prolonged, the replacement frequency of the hob body is reduced, the cost is reduced, and the tunneling efficiency of the shield tunneling machine is improved.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term 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 may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a toper diamond hobbing cutter for shield constructs machine is last, its characterized in that is circular shape hobbing cutter body (1) including the cross-section, the surface circumference of hobbing cutter body (1) is equipped with tooth (11) of evenly arranging, be equipped with recess (12) in tooth (11), be equipped with cutter (2) in recess (12), cutter (2) are including being fixed in carbide base (22) in recess (12), the top surface of carbide base (22) is equipped with outer polycrystalline diamond tool bit (21) of protruding recess (12), the top surface of polycrystalline diamond tool bit (21) is formed with cutting edge (211).
2. The conical diamond hob for the shield machine according to claim 1, characterized in that the total height of the cutter (2) is 13-40mm, the thickness of the polycrystalline diamond cutter head (21) is 2.0-4.0mm, and the diameter of the cemented carbide base (22) is 16-25 mm.
3. The conical diamond hob for the shield machine according to claim 2, characterized in that the polycrystalline diamond cutter head (21) is conical.
4. The conical diamond hob for a shield machine according to claim 3, characterized in that the top end surface of the polycrystalline diamond cutter head (21) comprises two intersecting bevels, between which a cutting edge (211) is formed.
5. The conical diamond hob for a shield machine according to claim 3, characterized in that the top end surface of the polycrystalline diamond cutter head (21) comprises three bevels, and cutting edges (211) are formed between adjacent bevels.
6. The conical diamond hob for a shield machine according to claim 3, characterized in that the top end surface of the polycrystalline diamond cutter head (21) comprises four bevels, and cutting edges (211) are formed between adjacent bevels.
7. The conical diamond hob for a shield machine according to any one of claims 4 to 6, characterized in that the included angle between two adjacent bevels is 120 ° to 170 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022056927.0U CN212898504U (en) | 2020-09-18 | 2020-09-18 | Conical diamond hob for shield machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022056927.0U CN212898504U (en) | 2020-09-18 | 2020-09-18 | Conical diamond hob for shield machine |
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| CN212898504U true CN212898504U (en) | 2021-04-06 |
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| CN202022056927.0U Active CN212898504U (en) | 2020-09-18 | 2020-09-18 | Conical diamond hob for shield machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338982A (en) * | 2021-07-14 | 2021-09-03 | 山东大学 | Tunnel boring machine hobbing cutter ring, hobbing cutter and boring machine comprising hobbing cutter |
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2020
- 2020-09-18 CN CN202022056927.0U patent/CN212898504U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338982A (en) * | 2021-07-14 | 2021-09-03 | 山东大学 | Tunnel boring machine hobbing cutter ring, hobbing cutter and boring machine comprising hobbing cutter |
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