CN212955249U - T type/L type part thermal treatment deformation control anchor clamps - Google Patents
T type/L type part thermal treatment deformation control anchor clamps Download PDFInfo
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- CN212955249U CN212955249U CN202021515788.7U CN202021515788U CN212955249U CN 212955249 U CN212955249 U CN 212955249U CN 202021515788 U CN202021515788 U CN 202021515788U CN 212955249 U CN212955249 U CN 212955249U
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Abstract
The utility model discloses a T type/L type part thermal treatment deformation control anchor clamps, including horizontal barrel centre gripping subassembly, rigidity length adjustment subassembly, vertical barrel centre gripping subassembly, rigidity length adjustment subassembly at length direction's both ends respectively with horizontal barrel centre gripping subassembly vertical barrel centre gripping subassembly is connected, makes rigidity length adjustment subassembly and the horizontal barrel of part, vertical barrel form the triangle-shaped structure. And clamping the transverse cylinder clamping assembly on a transverse cylinder of the T-shaped/L-shaped part, and clamping the longitudinal cylinder clamping assembly on a longitudinal cylinder of the T-shaped/L-shaped part. Because the clamp is in rigid connection, a stable triangular structure is formed between the clamp and the T-shaped/L-shaped part, the problem that the angle between the transverse cylinder and the longitudinal cylinder of the T-shaped/L-shaped part is opened or reduced can be effectively controlled, the part buckling deformation caused by uneven heat treatment stress distribution in the part is reduced, and the part angle deformation is controlled within the technical file requirement range.
Description
Technical Field
The utility model relates to a metal heat treatment processing technology field, concretely relates to T type/L type part heat treatment deformation control anchor clamps.
Background
The workpiece is cooled unevenly, so that warping deformation is generated, and the deformation tendency of the workpiece depends on the magnitude of thermal stress, structural stress and volume deformation at the time. When the action of thermal stress is dominant, the workpiece protrudes to the quick cooling surface; conversely, when the tissue stress effect is dominant, the workpiece bulges to the slow cooling surface. On the other hand, the faster the cooling speed of the workpiece, the more severe the degree of unevenness in cooling the workpiece, and the more remarkable the warp deformation. Practice proves that in the case of complete hardening, for workpieces with asymmetric shapes (no matter what steel materials are made), if water or brine quenching is adopted, the surface which is cooled quickly is convex; if oil quenching or nitrate graded quenching is adopted, the slow cooling surface is mostly convex. Obviously, the former is because the cooling speed of water is fast, and the thermal stress is remarkable; the latter, due to the significant tissue stresses, produces the exact opposite deformation.
In the existing heat treatment of T-shaped/L-shaped typical landing gear parts, a clamp is not generally adopted to limit and control a transverse cylinder and a longitudinal cylinder, and a large amount of machining allowance is reserved at the cylinder part before heat treatment to prevent angular deformation after heat treatment. If the angle between the transverse cylinder and the longitudinal cylinder is deformed, the wall thickness of the part can be adjusted to ensure that the part meets the technical requirements. Because this type of typical part is mostly super-strength steel material, the machining degree of difficulty is big after the thermal treatment, and the cutter consumes the volume greatly, leads to part production cycle length.
The T-shaped/L-shaped typical part is an important structural part, the material of the T-shaped/L-shaped typical part is ultrahigh-strength steel, the strength sigma is greater than or equal to 1570Mpa, the length of the part is longer and is between 1000mm and 3500mm, and meanwhile, the cross section of the part is uneven in thickness and the wall thickness of a transverse cylinder body is thinner. In the heat treatment process, the angle between the transverse cylinder and the longitudinal cylinder and the straightness of the transverse cylinder are easy to deform due to the influence of the self gravity of the part and the stress of a heat treatment structure. According to the summary of historical data, under the control of no clamp, the angle change between the transverse cylinder and the longitudinal cylinder of the part is more than or equal to +/-1.5 degrees, and the linearity change of the cylinder is more than or equal to 0.3mm and even larger. Due to the limitation of the structure of the part, the deformation of the part angle cannot be controlled by correction after heat treatment. For parts with small angle out-of-tolerance, the size of the parts can be ensured by subsequent machining and adjustment of the local wall thickness of the parts, but the local wall thickness of the parts is out-of-tolerance. And for parts with large angle difference, the parts are generally directly scrapped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, to prior art not enough, provide a T type/L type part thermal treatment deformation control anchor clamps, this T type/L type part thermal treatment deformation control anchor clamps can open or reduce by horizontal vertical barrel angle behind effective control "T type" and/or "L type" part thermal treatment to and the problem that horizontal barrel straightness accuracy warp, thereby reach the purpose that control T type/L type part thermal treatment warp.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a T type/L type part thermal treatment deformation control anchor clamps which structural feature is, including horizontal barrel centre gripping subassembly, rigidity length adjustment subassembly, vertical barrel centre gripping subassembly, rigidity length adjustment subassembly both ends in length direction respectively with horizontal barrel centre gripping subassembly, vertical barrel centre gripping subassembly is connected, makes rigidity length adjustment subassembly and the horizontal barrel of part, vertical barrel form the triangle-shaped structure.
And clamping the transverse cylinder clamping assembly on a transverse cylinder of the T-shaped/L-shaped part, and clamping the longitudinal cylinder clamping assembly on a longitudinal cylinder of the T-shaped/L-shaped part. Because the clamp is in rigid connection, a stable triangular structure is formed between the clamp and the T-shaped/L-shaped part, the problem that the angle between the transverse cylinder and the longitudinal cylinder of the T-shaped/L-shaped part is opened or reduced can be effectively controlled, the part buckling deformation caused by uneven heat treatment stress distribution in the part is reduced, and the part angle deformation is controlled within the technical file requirement range.
The utility model discloses the technology that anchor clamps adopted before the use includes: and carrying out deformation analysis on the T-shaped/L-shaped part model to determine the size state of the part. And (3) determining the angular dimensional tolerance by combining an oil inlet mode and utilizing a reverse control method: if the longitudinal cylinder is filled with oil first, before heat treatment, the angle between the horizontal cylinder and the longitudinal cylinder is processed to the lower difference of the required range. On the contrary, if the transverse cylinder body is filled with oil firstly, the transverse cylinder body is processed to the upper difference of the required range. And determining the clamping position of the clamping assembly, mounting the clamp, and carrying out heat treatment on the part.
Further, horizontal barrel centre gripping subassembly and/or vertical barrel centre gripping subassembly includes 2 fastening components, 2 semicircle clamps, 2 the semicircle clamp passes through 2 fastening components splices into the annular structure, and the annular structure centre gripping that is formed by 2 semicircle clamps is fixed at part barrel outer lane.
Furthermore, lug holes used for being connected with the rigid length adjusting assembly are further formed in the transverse cylinder clamping assembly and/or the longitudinal cylinder clamping assembly.
Further, fastening components includes rectangle clamp, stopper, the rectangle clamp cover is established the junction of 2 semicircle clamps, and pass through stopper block is fixed.
Furthermore, the rigidity length adjustment assembly comprises a shuttle nut and 2 thread hooks, two ends of the shuttle nut are respectively connected with two thread ends of the 2 thread hooks, and the hook ends of the 2 thread hooks are respectively connected with the transverse cylinder clamping assembly and the longitudinal cylinder clamping assembly. The length of the whole rigid length adjusting assembly can be adjusted by adjusting the length of the threaded hook screwed into the shuttle nut, and the torsion is determined by adjusting the threaded hook and the shuttle nut through the torque wrench, so that the part warping deformation caused by uneven distribution of heat treatment stress in the part is reduced, and the deformation prevention effect is in the best state by controlling the method of the thread torsion.
Further, the thread directions of the thread ends of 2 thread hooks are opposite.
Furthermore, horizontal barrel centre gripping subassembly, rigidity length adjustment subassembly all have 2 groups, there are 1 group on the vertical barrel centre gripping subassembly, the both ends of vertical barrel centre gripping subassembly pass through 2 the auricle hole respectively with rigidity length adjustment subassembly links to each other, 2 rigidity length adjustment subassembly respectively with horizontal barrel centre gripping subassembly links to each other. This kind of mode is adapted to the centre gripping of T type part, 2 horizontal barrel centre gripping subassembly is fixed at the T shape both ends of T type part.
Further, the lateral barrel clamp assembly and/or the longitudinal barrel clamp assembly are made of a rigid material.
And (3) reserving a process groove at the clamping part of the transverse cylinder clamping component and/or the longitudinal cylinder clamping component before heat treatment. Preferably, the width of the process groove is 30mm, and the thickness of the process groove is 3 mm.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
1) because the clamp is in rigid connection, a stable triangular structure is formed between the clamp and the T-shaped/L-shaped part, the problem that the angle between the transverse cylinder and the longitudinal cylinder of the T-shaped/L-shaped part is opened or reduced can be effectively controlled, the part buckling deformation caused by uneven heat treatment stress distribution in the part is reduced, and the part angle deformation is controlled within the technical file requirement range.
2) Because the whole transverse cylinder body of the T-shaped/L-shaped part is a thin-walled part, the clamp can effectively control the dimensions of the transverse cylinder body such as straightness, roundness and the like to be within the range required by technical documents.
3) The machining of typical parts after heat treatment can be effectively reduced, the process groove which is about 30mm wide and 3mm thick is reserved at the clamping part of the clamping assembly only in the transverse and longitudinal cylinder before heat treatment, the inner hole and the non-precise matching size part can be completely machined before heat treatment, and the part machining efficiency is greatly improved.
4) The part material is usually an ultrahigh-strength steel material, has high hardness after heat treatment, is not easy to cut and process, and has larger loss to a cutter. By adopting the clamp, the deformation can be effectively controlled, and the machining amount after heat treatment is reduced, so that the tool loss rate is reduced.
5) This the utility model discloses an anchor clamps still have the dress hang simple, adjust simple, make simple, can repeatedly assemble advantages such as use.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it should be apparent that the drawings in the following description only relate to some embodiments of the present invention and are not intended to limit the present invention.
Fig. 1 is a typical heat treatment deformation trend diagram of a T-shaped part in a free state, wherein (a) is a deformation trend diagram when a longitudinal cylinder body enters oil first, and (b) is a deformation trend diagram when a transverse cylinder body enters oil first, and a broken line in the deformation trend diagram is a deformation trend of the part after heat treatment.
FIG. 2 is a schematic view showing the stress distribution of the heat treatment of a typical T-shaped part in the state of using the clamp of the present invention.
FIG. 3 is a schematic view of the clamp suitable for use with T-shaped parts.
Fig. 4 is a schematic view of the clamp suitable for L-shaped parts.
Fig. 5 is a schematic structural view of the horizontal/vertical clamping assembly of the present invention.
FIG. 6 is a schematic view of the longitudinal cylinder of the parts being loaded with oil first.
Fig. 7 is a partially enlarged view of fig. 6.
FIG. 8 is a schematic view of the horizontal cylinder of the parts being loaded with oil first.
Fig. 9 is a partially enlarged view of fig. 8.
FIG. 10 is an enlarged view of a portion of the process recess.
Reference numerals
1-a transverse cylinder clamping assembly; 2-a rigid length adjustment assembly; 3-longitudinal cylinder clamping component; 4-processing a groove; 5-a transverse cylinder; 6-longitudinal cylinder body; 7-V type cushion block; 8-U-shaped lifting hooks; 9-hanging the tool; 10-stainless steel wire;
21-a shuttle nut; 22-a threaded hook;
11, 31-a fastening assembly; 12, 32-half circle hoop; 13, 33-ear piece hole; 14, 34-rectangular clamp; 15, 35-limit bar;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The utility model discloses at least one embodiment provides a T type/L type part thermal treatment deformation control anchor clamps, including horizontal barrel centre gripping subassembly 1, rigidity length adjustment subassembly 2, vertical barrel centre gripping subassembly 3, rigidity length adjustment subassembly 2 at length direction's both ends respectively with horizontal barrel centre gripping subassembly 1 vertical barrel centre gripping subassembly 3 is connected, with horizontal barrel centre gripping subassembly 1 centre gripping on the horizontal barrel 5 of T type/L type part, vertical barrel centre gripping subassembly 3 centre gripping is on the vertical barrel 6 of T type/L type part. Because the clamp is in rigid connection, a stable triangular structure is formed between the clamp and the T-shaped/L-shaped part, so that the problem of opening or reducing the angle between the transverse cylinder and the longitudinal cylinder of the T-shaped/L-shaped part is effectively controlled, the part buckling deformation caused by uneven heat treatment stress distribution in the part is reduced, and the part angle deformation is controlled within the technical file requirement range.
Before heat treatment, the T/L part model was subjected to deformation analysis, as shown in fig. 1, and the part dimensional status was determined. And (3) determining the angular dimensional tolerance by combining an oil inlet mode and utilizing a reverse control method: if the longitudinal cylinder 6 is filled with oil first, the angle between the horizontal and longitudinal cylinders is processed to the lower difference of the required range before the heat treatment. On the contrary, if the transverse cylinder 5 is filled with oil first, the processing is carried out to the upper difference of the required range. And determining the clamping position of the clamping assembly, mounting the clamp, and carrying out heat treatment on the part.
As shown in fig. 5, the transverse cylinder clamping assembly 1 and/or the longitudinal cylinder clamping assembly 3 comprises 2 fastening assemblies 11,31, 2 semicircular hoops 12,32, which are spliced into a circular structure by 2 fastening assemblies 11, 31. Fastening components 11,31 include rectangle clamp 14,34, stopper rod 15,35, rectangle clamp 14,34 cover are established 2 semicircle clamp 12,32 junction, and pass through stopper rod 15,35 block are fixed. The transverse cylinder clamping component 1 and/or the longitudinal cylinder clamping component 3 are/is also provided with lug holes 13 and 33 used for being connected with the rigid length adjusting component 2. Utilize the annular structure centre gripping that 2 semicircle clamps formed to fix at part barrel outer lane
As shown in fig. 3 and 4, the rigid length adjustment assembly 2 includes a shuttle nut 21 and 2 threaded hooks 22, two ends of the shuttle nut 21 are respectively connected with the threaded ends of the 2 threaded hooks 22, and the hook ends of the 2 threaded hooks 22 are respectively connected with the transverse cylinder clamping assembly 1 and the longitudinal cylinder clamping assembly 3. The thread directions of the thread ends of 2 thread hooks 22 are opposite. The length of the whole rigid length adjusting assembly 2 can be adjusted by adjusting the length of the threaded hook 22 screwed into the shuttle nut 21, and the torsion is determined by adjusting the threaded hook 22 and the shuttle nut 21 by a torque wrench, so that the part warping deformation caused by uneven distribution of heat treatment stress in the part is reduced, and the deformation prevention effect is in the best state by controlling the method of the thread torsion.
Preferably, the transverse barrel clamp assembly 1 and/or the longitudinal barrel clamp assembly 3 are made of a rigid material.
Before heat treatment, a process groove 4 is reserved at the clamping part of the transverse cylinder clamping assembly 1 and/or the longitudinal cylinder clamping assembly 3, and as shown in fig. 10, the transverse cylinder clamping assembly and/or the longitudinal cylinder clamping assembly are processed after the heat treatment. The width of the process groove 4 is 30mm, and the thickness is 3 mm.
The use of the clamp of the present invention will be further described with reference to fig. 6 to 10.
1) And (3) carrying out deformation analysis on the free state of the part before heat treatment, and determining the clamping position of the clamping assembly and a process groove, wherein the process groove is generally about 30mm wide and 3mm thick.
2) And determining an oil inlet mode according to the structural size of the part and the size of the material frame. And (3) determining the dimensional tolerance of the angle between the transverse and longitudinal cylinders of the part before heat treatment by combining an oil feeding mode and utilizing a reverse control method. If the longitudinal cylinder is filled with oil first, before heat treatment, the angle between the horizontal cylinder and the longitudinal cylinder is processed to the lower difference of the required range. On the contrary, if the transverse cylinder body is filled with oil firstly, the transverse cylinder body is processed to the upper difference of the required range.
3) Will the utility model discloses anchor clamps are installed on the part:
two pairs of semicircular hoops are respectively installed on the process groove positions of the transverse cylinder body and the longitudinal cylinder body of the part, and the rectangular hoops and the limiting rods are assembled at the joint of each 2 semicircular hoops to form a transverse cylinder body clamping assembly and a longitudinal cylinder body clamping assembly together.
And connecting the threaded hook with the shuttle nut, hanging the threaded hook on the lug hole of the transverse cylinder clamping component, hanging the other threaded hook on the lug hole of the longitudinal cylinder clamping component, and connecting the threaded hook with the shuttle nut.
The spindle nut is adjusted by using a torque wrench, so that certain appropriate torque force is generated between the 2 threaded hooks and the transverse cylinder clamping assembly and between the 2 threaded hooks and the longitudinal cylinder clamping assembly.
For T-shaped parts, as shown in fig. 3, each T-shaped part is assembled by 2 rigid length adjusting assemblies, 2 groups of transverse cylinder clamping assemblies and 1 group of longitudinal cylinder clamping assemblies, and 1 triangular structure is formed at two ends of the T-shaped part in a shape like a letter "T".
For the L-shaped parts, as shown in fig. 4, each L-shaped part is assembled by 1 rigid length adjusting assembly, 1 group of transverse cylinder clamping assemblies and 1 group of longitudinal cylinder clamping assemblies, and the whole L-shaped part and the clamp form 1 triangular structure together.
4) Hanging the assembled parts, putting the parts into a smelting furnace for heat treatment:
for the part forward hanging mode that the longitudinal cylinder enters oil firstly, as shown in fig. 6 and 7, the joint of the longitudinal cylinder and the transverse cylinder of the part is fixed on the outer ring of the longitudinal cylinder of the part by using a clamping component and/or an anchor ear, and then the part is hung by a steel wire and a U-shaped lifting hook.
For the part hanging method in which the horizontal cylinder is filled with oil first, as shown in fig. 8 and 9, a stainless steel wire is bound on the vertical cylinder of the part, the part is connected to a material frame for fixing, the lower part of the horizontal cylinder of the part is limited by a V-shaped cushion block, and the part is put into a furnace for heat treatment.
5) After the heat treatment is finished, the angle change between the transverse cylinder and the longitudinal cylinder and the straightness change of the transverse cylinder are measured.
The utility model provides a T type/L type part thermal treatment deformation control anchor clamps and processing method, through the analysis of part deformation before the thermal treatment, confirm the centre gripping position technology recess position of centre gripping subassembly to according to the mode of going into oil, utilize the back control method, confirm angle machining tolerance, carry out machining to the spare part before the thermal treatment. In combination with the clamp, the clamp comprises three parts: the transverse cylinder clamping assembly, the rigid length adjusting assembly and the longitudinal cylinder clamping assembly are used for fixedly connecting parts, so that the parts and the clamp form a triangular structure integrally, and the problem of opening/reducing the angle between the transverse cylinder and the longitudinal cylinder after the T-shaped/L-shaped typical undercarriage parts are subjected to heat treatment can be effectively controlled due to the rigid connection of the clamp. The utility model discloses the thermal treatment that makes the part warp requires the within range, prevents promptly that the part angle from opening or dwindling, avoids horizontal barrel straightness accuracy deformation problem, has reached the purpose that control part thermal treatment warp.
The above-mentioned embodiments are illustrative and should not be construed as limiting the scope of the invention, which is defined by the appended claims, and all modifications of the equivalent forms of the present invention which are obvious to those skilled in the art after reading the present invention.
Claims (8)
1. The utility model provides a T type/L type part thermal treatment deformation control anchor clamps which characterized in that, includes horizontal barrel centre gripping subassembly (1), rigidity length adjustment subassembly (2), vertical barrel centre gripping subassembly (3), rigidity length adjustment subassembly (2) length direction's both ends respectively with horizontal barrel centre gripping subassembly (1), vertical barrel centre gripping subassembly (3) are connected.
2. The T/L type part heat treatment deformation control clamp according to claim 1, characterized in that the transverse cylinder clamping assembly (1) and/or the longitudinal cylinder clamping assembly (3) comprises 2 fastening assemblies (11,31), 2 semicircular clamping bands (12,32), and the 2 semicircular clamping bands (12,32) are spliced into a circular ring structure through the 2 fastening assemblies (11, 31).
3. The T/L type part heat treatment deformation control clamp according to claim 1, characterized in that the transverse cylinder clamping assembly (1) and/or the longitudinal cylinder clamping assembly (3) are further provided with lug holes (13,33) for connecting with the rigid length adjusting assembly (2).
4. The T/L type part heat treatment deformation control clamp as claimed in claim 2, characterized in that the fastening assembly (11,31) comprises a rectangular clamp (14,34) and a limiting rod (15,35), wherein the rectangular clamp (14,34) is sleeved on the joint of the 2 semicircular clamps (12,32) and is clamped and fixed by the limiting rod (15, 35).
5. The heat treatment deformation control clamp for the T-shaped/L-shaped parts as claimed in claim 1, wherein the rigid length adjusting assembly (2) comprises a shuttle nut (21) and 2 threaded hooks (22), two ends of the shuttle nut (21) are respectively connected with threaded ends of the 2 threaded hooks (22), and hook ends of the 2 threaded hooks (22) are respectively connected with the transverse cylinder clamping assembly (1) and the longitudinal cylinder clamping assembly (3).
6. The T/L type part heat treatment deformation control clamp according to claim 5, characterized in that the thread directions of the thread ends of 2 thread hooks (22) are opposite.
7. The heat treatment deformation control clamp for the T-shaped/L-shaped part according to claim 3, wherein the transverse cylinder clamping assembly (1) and the rigidity length adjusting assembly (2) are respectively provided with 2 groups, the longitudinal cylinder clamping assembly (3) is provided with 1 group, two ends of the longitudinal cylinder clamping assembly (3) are respectively connected with the rigidity length adjusting assembly (2) through 2 lug holes (13,33), and 2 rigidity length adjusting assemblies (2) are respectively connected with the transverse cylinder clamping assembly (1).
8. The T/L part heat treatment deformation control clamp according to any one of claims 1 to 7, wherein the transverse cylinder clamping assembly (1) and/or the longitudinal cylinder clamping assembly (3) are made of rigid material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021515788.7U CN212955249U (en) | 2020-07-28 | 2020-07-28 | T type/L type part thermal treatment deformation control anchor clamps |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021515788.7U CN212955249U (en) | 2020-07-28 | 2020-07-28 | T type/L type part thermal treatment deformation control anchor clamps |
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| CN212955249U true CN212955249U (en) | 2021-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150131A (en) * | 2021-12-02 | 2022-03-08 | 中航飞机起落架有限责任公司 | Hanging device and hanging method for heat treatment of metal parts |
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2020
- 2020-07-28 CN CN202021515788.7U patent/CN212955249U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150131A (en) * | 2021-12-02 | 2022-03-08 | 中航飞机起落架有限责任公司 | Hanging device and hanging method for heat treatment of metal parts |
| CN114150131B (en) * | 2021-12-02 | 2023-09-08 | 中航飞机起落架有限责任公司 | Hanging device and hanging method for heat treatment of metal workpiece |
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