CN217377958U - Straight pipe induction quenching mechanism - Google Patents
Straight pipe induction quenching mechanism Download PDFInfo
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- CN217377958U CN217377958U CN202221410247.7U CN202221410247U CN217377958U CN 217377958 U CN217377958 U CN 217377958U CN 202221410247 U CN202221410247 U CN 202221410247U CN 217377958 U CN217377958 U CN 217377958U
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- 230000006698 induction Effects 0.000 title claims abstract description 69
- 230000007246 mechanism Effects 0.000 title claims abstract description 41
- 238000010791 quenching Methods 0.000 title description 32
- 230000000171 quenching effect Effects 0.000 title description 32
- 238000010438 heat treatment Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007665 sagging Methods 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 239000002344 surface layer Substances 0.000 description 1
- 230000006032 tissue transformation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The application provides a straight pipe induction hardening mechanism, belongs to induction hardening technical field, and straight pipe induction hardening mechanism includes: a power source; the first end of the fixed shaft is connected with the power supply, the second end of the fixed shaft is used for being inserted into the straight pipe, and the straight pipe is fixedly arranged relative to the fixed shaft; the inductor is connected with the second end of the fixed shaft; the bearing is sleeved at the second end of the fixed shaft and used for supporting the fixed shaft. Through the technical scheme of this application, establish the bearing at the cover on the fixed axle, can support the fixed axle in the straight tube, avoid the inductor flagging, make the inductor lie in the center of straight tube as far as possible to promote the quality stability of straight tube induction hardening.
Description
Technical Field
The application belongs to the technical field of induction quenching, and particularly relates to a straight pipe induction quenching mechanism.
Background
The principle of induction heat treatment is an advanced heat treatment process method which utilizes the electromagnetic induction effect to cause the surface layer, local part or whole of a workpiece to generate eddy current to be heated and then cooled so as to change the surface structure and performance of the workpiece. The heating speed is high, the energy utilization rate is high, and the device is particularly suitable for straight pipe and long rod materials. Because the materials have large size in one direction, the whole heat treatment process is complex, the product deformation is large, and the cost is high.
For induction hardening of a straight pipe, the coaxiality of the induction coil and the straight pipe is very important. If the inductor coil is not centered, the gaps of the upper part and the lower part are inconsistent, the heat treatment effect of the upper part and the lower part of the straight pipe is greatly different, and the heat treatment stability of the straight pipe is influenced. And when the straight pipe required to be subjected to induction quenching is longer, the bending is limited by the deflection of the fixed shaft. As the distance of induction hardening becomes longer, the inductor inevitably droops downward. It is characterized in that the movable bearing is directly pressed on the inner wall of the lower part of the straight pipe. As a result of such design, the quenching depth of the upper portion of the straight pipe becomes shallow and the hardness becomes low, while the quenching depth of the lower portion becomes deep and the hardness exceeds the upper limit, resulting in deterioration of the consistency of the product and influence on the stability in mass production.
SUMMERY OF THE UTILITY MODEL
Embodiments according to the present application aim to ameliorate at least one of the technical problems of the prior art or the related art.
In view of the above, an object according to an embodiment of the present application is to provide a straight pipe induction hardening mechanism.
In order to achieve the above object, according to a first aspect of the present application, there is provided a straight pipe induction hardening mechanism for induction hardening of a straight pipe, the straight pipe induction hardening mechanism including: a power source; the first end of the fixed shaft is connected with the power supply, the second end of the fixed shaft is used for being inserted into the straight pipe, and the straight pipe is fixedly arranged relative to the fixed shaft; the inductor is connected with the second end of the fixed shaft; the bearing is sleeved at the second end of the fixed shaft and used for supporting the fixed shaft.
According to the application, the straight pipe induction quenching mechanism is used for induction quenching of a straight pipe and comprises a power supply, a fixed shaft, an inductor and a bearing. The power supply is electrically connected with the fixed shaft and used for providing alternating current with certain frequency for the inductor. The second end of the fixed shaft is connected with the inductor and used for being inserted into the straight pipe and heating the straight pipe through electromagnetic induction. The bearing is mounted at the second end of the stationary shaft for supporting the stationary shaft. When the straight pipe required to be subjected to induction quenching is longer, the material deflection of the fixed shaft is limited, and the inductor inevitably hangs down along with the increase of the induction quenching distance. The bearing is arranged at the second end of the fixed shaft, so that the fixed shaft can be supported when the fixed shaft is inserted into the straight pipe, the sensor is prevented from sagging, the sensor is positioned at the center of the straight pipe as much as possible, the heat treatment effect of the upper part and the lower part of the straight pipe is the same, and the quality stability of the induction quenching of the straight pipe is improved. Wherein the bearing may be a live bearing.
In addition, the technical scheme provided by the application can also have the following additional technical characteristics:
in the above technical scheme, the central axis of the bearing is not coincident with the central axis of the inductor.
In this technical scheme, the bearing is limited to the roundness of the straight pipe during actual production, and if the size of the bearing is too large, the bearing cannot be inserted into the straight pipe during induction quenching, and the diameter of the bearing needs to be smaller than the inner diameter of the straight pipe. Therefore, a gap is formed between the bearing and the inner wall of the straight pipe, the gap is limited by the material deflection of the fixing shaft, the bearing is pressed on the inner wall of the lower part of the straight pipe, and the sensor cannot be completely centered and kept at the center of the straight pipe. The central axis of the bearing is not coincident with the central axes of the inductor and the fixed shaft, namely, the axis of the bearing is deviated downwards by a certain distance, so that the second end of the fixed shaft is coaxial with the straight pipe, the inductor is positioned at the center of the straight pipe, and the quality stability of induction quenching of the straight pipe can be improved finally.
In the technical scheme, the central axis of the bearing has a first offset relative to the central axis of the inductor along a first direction, and the size of the first offset is 1mm-5 mm.
In the technical scheme, the central axis of the bearing has a first offset relative to the central axis of the inductor along a first direction, the first offset is 1-5 mm, and the gap between the inductor and the upper part of the inner wall of the straight pipe is the same as the gap between the inductor and the lower part of the inner wall of the straight pipe by adjusting the first offset, so that the inductor is positioned in the center of the straight pipe, and the difference of the heat treatment effects of the upper part and the lower part of the straight pipe is avoided.
In the technical scheme, the diameter difference between the inner diameter of the straight pipe and the diameter of the bearing is more than or equal to 2 mm.
In the technical scheme, the diameter difference between the inner diameter of the straight pipe and the diameter of the bearing is more than or equal to 2 mm. The diameter of the bearing is smaller than the inner diameter of the straight pipe by more than 2mm, so that the bearing can be conveniently inserted into the straight pipe.
In the above technical scheme, the straight pipe induction quenching mechanism further comprises: the chuck is fixedly arranged, and the fixed shaft penetrates through the chuck and is inserted into the straight pipe.
In the technical scheme, the straight pipe induction quenching mechanism further comprises a chuck, the chuck is fixed on one side of a power supply, one end of a fixed shaft is connected with the power supply, the other end of the fixed shaft penetrates through the chuck to be connected with an inductor, and the inductor is inserted into the straight pipe. The chuck can support the fixed shaft to move along the axial direction of the straight pipe.
Among the above-mentioned technical scheme, the one end of straight tube links to each other with the chuck, and the chuck is used for driving the straight tube rotation.
In the technical scheme, the straight pipe is arranged on one side, far away from a power supply, of the chuck, the chuck can drive the straight pipe to rotate, and circumferential rotation motion can improve the uniformity of a hardening layer on the inner wall of the straight pipe.
Among the above-mentioned technical scheme, the power is movably set up, and the power drives the fixed axle and removes for the chuck.
In the technical scheme, the power supply is movably arranged and can drive the fixed shaft to move relative to the chuck, so that the sensor is driven to move in the straight pipe along the axial direction of the straight pipe, and the whole straight pipe is uniformly quenched.
In the above technical scheme, the straight pipe induction quenching mechanism further comprises: and the supporting piece is positioned between the power supply and the chuck and used for supporting the fixing shaft.
In the technical scheme, the straight pipe induction quenching mechanism further comprises a supporting piece, wherein the supporting piece is located between the power supply and the chuck and used for supporting the fixing shaft and preventing the second end of the fixing shaft from sagging.
In the above technical scheme, the straight pipe induction quenching mechanism further comprises: the guide rail, the power is connected with the guide rail slidable.
In the technical scheme, the straight pipe induction quenching mechanism further comprises a guide rail, and the power supply can slide on the guide rail, so that the inductor is driven to move back and forth in the straight pipe along the axial direction of the straight pipe.
Among the above-mentioned technical scheme, straight tube induction hardening mechanism still includes: and the driving device is used for driving the power supply to slide along the guide rail.
In the technical scheme, the straight pipe induction quenching mechanism further comprises a driving device, and the driving device can drive the power supply to slide back and forth along the guide rail.
Additional aspects and advantages of embodiments in accordance with the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments in accordance with the present application.
Drawings
FIG. 1 is a schematic front view of a straight pipe induction hardening mechanism according to an embodiment provided herein;
FIG. 2 is a partially cross-sectional structural schematic view of a straight pipe induction hardening mechanism according to another embodiment provided herein.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
10: a straight pipe induction quenching mechanism; 110: a power source; 120: a fixed shaft; 130: an inductor; 140: a bearing; 150: a chuck; 160: a support member; 170: a straight tube.
Detailed Description
In order that the above objects, features and advantages of embodiments according to the present application may be more clearly understood, embodiments according to the present application will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that features of embodiments according to the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments according to the present application, however, embodiments according to the present application may be practiced in other ways than those described herein, and therefore the scope of protection afforded by embodiments according to the present application is not limited by the specific embodiments disclosed below.
Some embodiments provided in accordance with the present application are described below with reference to fig. 1 and 2.
As shown in fig. 1, a straight pipe induction hardening mechanism 10 according to an embodiment of the present application is provided for induction hardening of a straight pipe 170, and the straight pipe induction hardening mechanism 10 includes a power supply 110, a fixed shaft 120, an inductor 130, and a bearing 140. Specifically, a first end of the fixed shaft 120 is connected to the power source 110, a second end of the fixed shaft 120 is configured to be inserted into the straight tube 170, and the straight tube 170 is fixedly disposed with respect to the fixed shaft 120. The inductor 130 is connected to the second end of the fixed shaft 120. The bearing 140 is sleeved on the second end of the fixed shaft 120 for supporting the fixed shaft 120.
According to the straight pipe induction hardening mechanism 10 provided by the embodiment, the straight pipe induction hardening mechanism 10 is used for induction hardening of the straight pipe 170, and the straight pipe induction hardening mechanism 10 comprises a power supply 110, a fixed shaft 120, an inductor 130 and a bearing 140. The power source 110 is electrically connected to the fixed shaft 120 for supplying an alternating current of a certain frequency to the inductor 130. The second end of the fixed shaft 120 is connected to the inductor 130 for insertion into the straight pipe 170, and the straight pipe 170 is heated by electromagnetic induction. A bearing 140 is mounted at the second end of the fixed shaft 120 for supporting the fixed shaft 120. When the straight pipe 170 to be induction-hardened is long, the inductor 130 inevitably hangs down as the induction hardening distance becomes longer, limited by the material deflection of the fixing shaft 120. By installing the bearing 140 at the second end of the fixed shaft 120, the fixed shaft 120 can be supported when the fixed shaft 120 is inserted into the straight pipe 170, so that the sensor 130 is prevented from sagging, the sensor 130 is positioned at the center of the straight pipe 170 as much as possible, the heat treatment effect of the upper and lower parts of the straight pipe 170 is the same, and the quality stability of the induction quenching of the straight pipe 170 is improved. Wherein the bearing 140 may be a movable bearing.
As shown in fig. 2, in addition, since the roundness of the straight pipe 170 is limited during actual production, if the size of the bearing 140 is too large, the bearing 140 does not fit into the straight pipe 170 during induction quenching, and the diameter of the bearing 140 must be smaller than the inner diameter of the straight pipe 170. Therefore, the bearing 140 is spaced from the inner wall of the straight tube 170, and is limited by the material flexibility of the fixing shaft 120, the bearing 140 presses on the inner wall of the lower portion of the straight tube 170, and the sensor 130 cannot be completely centered and maintained at the center of the straight tube 170. The central axis of the bearing 140 is not coincident with the central axes of the inductor 130 and the fixed shaft 120, that is, the axis of the bearing 140 is offset downward by a certain distance, so that the second end of the fixed shaft 120 is coaxial with the straight pipe 170, the inductor 130 is positioned at the center of the straight pipe 170, and the quality stability of the induction quenching of the straight pipe 170 can be improved finally.
Further, the central axis of the bearing 140 has a first offset amount along a first direction relative to the central axis of the inductor 130, the size of the first offset amount is 1mm-5mm, and by adjusting the first offset amount, the upper gap and the lower gap between the inductor 130 and the inner wall of the straight pipe 170 are the same, so that the inductor 130 is located at the center of the straight pipe 170, and the difference of the heat treatment effects of the upper part and the lower part of the straight pipe 170 is avoided.
Wherein, the diameter difference between the inner diameter of the straight pipe 170 and the bearing 140 is more than or equal to 2 mm. In actual production, the bearing 140 is limited by the roundness of the straight pipe 170, and if the size of the bearing 140 is too large, the bearing 140 is not inserted into the straight pipe 170 during induction quenching, and the diameter of the bearing 140 is smaller than the inner diameter of the straight pipe 170 by more than 2mm, so that the bearing 140 can be conveniently inserted into the straight pipe 170.
In the above embodiment, the straight pipe induction hardening mechanism 10 further includes the chuck 150, the chuck 150 is fixed to one side of the power supply 110, one end of the fixed shaft 120 is connected to the power supply 110, the other end passes through the chuck 150 to be connected to the inductor 130, and the inductor 130 is inserted into the straight pipe 170. The chuck 150 can support the fixed shaft 120 to move in the axial direction of the straight pipe 170. The straight pipe 170 is arranged on one side of the chuck 150 far away from the power supply 110, the chuck 150 can drive the straight pipe 170 to rotate, and circumferential rotation can improve the uniformity of a hardening layer on the inner wall of the straight pipe 170.
In the above embodiment, the power source 110 is movably disposed to drive the fixing shaft 120 to move relative to the chuck 150, so as to drive the sensor 130 to move along the axial direction of the straight pipe 170 in the straight pipe 170, and thus the entire straight pipe 170 is uniformly quenched.
In some embodiments, the straight pipe induction hardening mechanism 10 further includes a support 160, and the support 160 is located between the power source 110 and the chuck 150 and is used for supporting the fixed shaft 120 and preventing the second end of the fixed shaft 120 from sagging.
In the above embodiment, the straight pipe induction hardening mechanism 10 further includes a guide rail, and the power supply 110 can slide on the guide rail, so as to drive the inductor 130 to move back and forth in the straight pipe 170 along the axial direction of the straight pipe 170.
Further, the straight pipe induction hardening mechanism 10 further includes a driving device, and the driving device can drive the power supply 110 to slide back and forth along the guide rail.
As shown in fig. 1 and 2, the straight pipe induction hardening mechanism 10 according to an embodiment of the present application includes a power source 110, a fixed shaft 120, an inductor 130, and a movable bearing.
Specifically, the inner diameter S1 of the straight tube 170 is 122mm, the movable bearing diameter S2 is 120mm, and the diameter S3 of the inductor 130 is 113mm, so that the gap between the inductor 130 and the inner wall of the straight tube 170 should be 4.5mm (122- & ltSUB >)/2 theoretically. However, the upper gap S6 was 5.5mm and the lower gap S5 was 4.5 mm. The disadvantages are as follows: the spacing of the inductor 130 from the surface of the material is one of the critical parameters. The distance affects the depth and tissue transformation of the induction hardening. The quenching depth of the upper portion of the straight pipe 170 becomes shallow and the hardness becomes low, while the quenching depth of the lower portion becomes deep and the hardness exceeds the upper limit. Resulting in poor product consistency and affecting stability during mass production.
The inductor 130 and the axle center of the movable bearing are not designed on the same level, and the size specification of all the fittings is kept unchanged. The inner diameter S1 of the straight pipe 170 is 122mm, the diameter S2 of the movable bearing is 120mm, and the diameter S3 of the inductor 130 is 113 mm. The live bearing is still pressed against the inner wall of the lower portion of the straight tube 170, subject to material deflection of the stationary shaft 120. However, when the axial center of the movable bearing is shifted downward by the first shift amount S4 and S4 is 1mm, the lower gap S5 becomes (120/2+1-113/2) 4.5mm, and the upper gap S6 becomes 4.5mm as well. Thus ensuring the coaxiality of the inductor 130 and the perfect centering of the inductor 130 in the straight pipe 170. Finally, the quality stability of the induction quenching of the straight pipe 170 can be improved.
The size is changed, the inner diameter S1 of the straight pipe 170 is 150mm, the diameter S2 of the movable bearing is 148mm, and the diameter S3 of the inductor 130 is 120 mm. The theoretical reasonable gap is (150/2-120/2) ═ 15 mm. If the movable bearing and the inductor 130 are coaxial, the lower gap S5 between the inductor 130 and the inner wall before optimization is 14mm (148/2-120/2), and the upper gap S6 is 16mm, which has a great influence on the actual induction heat treatment.
After the optimization, if the axis of the movable bearing is shifted downward by 1mm, that is, the first offset amount S4 is 1mm, the lower gap S5 between the inductor 130 and the inner wall becomes (148/2+1-120/2) 15mm, which is a theoretical gap. The upper gap S6 is also 15 mm. The inductor 130 is now perfectly centered on the straight tube 170. Finally, the quality stability of the induction quenching of the straight pipe 170 can be improved.
To sum up, the beneficial effect of this application embodiment is:
1. the movable bearing and the inductor of the straight pipe induction quenching mechanism are designed to be non-coaxial structures, namely the movable bearing is downwards deviated for a certain distance, so that the inductor can be positioned at the center of a straight pipe, and the quality stability of straight pipe induction quenching is improved.
In embodiments according to the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments according to the present application can be understood by those of ordinary skill in the art as the case may be.
In the description of the embodiments according to the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience of description and simplification of description of the embodiments according to the present application, and do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, cannot be construed as limitations on the embodiments according to the present application.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example in accordance with the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are merely preferred embodiments according to the present application, and are not intended to limit the embodiments according to the present application, and those skilled in the art may make various modifications and variations to the embodiments according to the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments according to the present application shall be included in the protection scope of the embodiments according to the present application.
Claims (10)
1. A straight pipe induction hardening mechanism is used for induction hardening of a straight pipe and is characterized by comprising:
a power supply (110);
the first end of the fixed shaft (120) is connected with the power supply (110), the second end of the fixed shaft (120) is used for being inserted into the straight pipe (170), and the straight pipe (170) is fixedly arranged relative to the fixed shaft (120);
an inductor (130) coupled to a second end of the stationary shaft (120);
and the bearing (140) is sleeved at the second end of the fixed shaft (120) and is used for supporting the fixed shaft (120).
2. The straight pipe induction hardening mechanism according to claim 1,
the central axis of the bearing (140) is not coincident with the central axis of the inductor (130).
3. The straight pipe induction hardening mechanism according to claim 2,
the central axis of the bearing (140) has a first offset in a first direction relative to the central axis of the inductor (130), and the first offset is 1mm-5mm in size.
4. The straight pipe induction hardening mechanism according to claim 3,
the diameter difference between the inner diameter of the straight pipe (170) and the bearing (140) is more than or equal to 2 mm.
5. The straight pipe induction hardening mechanism according to any one of claims 1 to 4, further comprising:
the clamping disc (150), the clamping disc (150) is fixedly arranged, and the fixing shaft (120) penetrates through the clamping disc (150) and is inserted into the straight pipe (170).
6. The straight pipe induction hardening mechanism according to claim 5,
one end of the straight pipe (170) is connected with the chuck (150), and the chuck (150) is used for driving the straight pipe (170) to rotate.
7. The straight pipe induction hardening mechanism according to claim 6,
the power supply (110) is movably arranged, and the power supply (110) drives the fixed shaft (120) to move relative to the chuck (150).
8. The straight pipe induction hardening mechanism according to claim 5, further comprising:
a support (160), the support (160) being located between the power source (110) and the chuck (150) for supporting the fixed shaft (120).
9. The straight pipe induction hardening mechanism according to any one of claims 1 to 4, further comprising:
a rail, the power source (110) being slidably connected with the rail.
10. The straight pipe induction hardening mechanism according to claim 9, further comprising:
and the driving device is used for driving the power supply (110) to slide along the guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221410247.7U CN217377958U (en) | 2022-06-08 | 2022-06-08 | Straight pipe induction quenching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221410247.7U CN217377958U (en) | 2022-06-08 | 2022-06-08 | Straight pipe induction quenching mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN217377958U true CN217377958U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221410247.7U Active CN217377958U (en) | 2022-06-08 | 2022-06-08 | Straight pipe induction quenching mechanism |
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|---|---|
| CN (1) | CN217377958U (en) |
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- 2022-06-08 CN CN202221410247.7U patent/CN217377958U/en active Active
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