CN210886141U

CN210886141U - Barrel-shaped T type part vacuum quenching thermal treatment anti-deformation device

Info

Publication number: CN210886141U
Application number: CN201921875618.7U
Authority: CN
Inventors: 翟甲友; 肖细军; 贺亚勇; 冯抗屯; 秦楚山; 熊诵涛; 陈湘华
Original assignee: AVIC Landing Gear Advanced Manufacturing Corp
Current assignee: AVIC Landing Gear Advanced Manufacturing Corp
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-06-30
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses a tube-shape T type part vacuum quenching thermal treatment anti-deformation device to the length direction of horizontal barrel is the X axle, uses the length direction of vertical barrel to establish rectangular coordinate system for the Z axle, uses the planar direction of perpendicular to X-Z to be the Y axle, including the base and locate a plurality of supporting mechanism on the base, the central point of base upper surface puts and is equipped with the support section of thick bamboo that can penetrate in the vertical barrel, and a plurality of supporting mechanism symmetry branches are located the both sides of support section of thick bamboo along X axle direction, supporting mechanism is used for restricting horizontal barrel along Z to and Y to the removal. The utility model discloses a supporting mechanism retrains the part deformation position, has overcome traditional device to the part cross restraint, restraint too big or restraint shortcoming such as unbalanced, make part heat treatment deflection littleer, reduce the part and scrap the risk to be favorable to improving follow-up machining efficiency.

Description

Barrel-shaped T type part vacuum quenching thermal treatment anti-deformation device

Technical Field

The utility model relates to a part thermal treatment deformation control technical field especially relates to a barrel-shaped T type part vacuum quenching thermal treatment anti-deformation device.

Background

The purpose of the final heat treatment of the part is to enable the material performance of the part to reach the mechanical properties such as tensile strength, yield strength, elongation and the like required by design and various indexes of other physical properties and chemical properties, so that the use requirement of the part is met, and therefore, the heat treatment is one of the most important key technologies in the part manufacturing process. The vacuum quenching heat treatment is mainly used for final heat treatment of high-strength metal parts with strict decarburization control requirements. Because the parts have high hardness after quenching, parameters used for cutting machining are usually small, the machining efficiency is low, and the removal machining of materials easily causes burn on the surfaces, the non-matching parts of the parts are generally machined to the designed size before heat treatment, the cutting machining is not carried out after the heat treatment, and the matching parts of the parts are left with proper finishing allowance before the heat treatment, so that the finishing after the heat treatment can eliminate the error influence caused by the deformation of the heat treatment and also take the machining efficiency into consideration, and therefore, the finishing allowance left before the heat treatment is determined by the deformation of the heat treatment. Because the temperature before vacuum quenching is very high, the temperature change during quenching is very large, and factors such as the difference of internal temperature fields and the gravity of parts are caused by the difference of the section thicknesses of the parts, the parts are easy to deform, and in order to reduce the deformation caused by vacuum quenching heat treatment as much as possible, reasonable limitation is carried out on the parts by adopting a proper device.

The cylindrical T-shaped part is characterized by consisting of two intersecting cylinders (shown in figure 1), the axial lines of the two cylinders (a vertical cylinder 8 or a main cylinder and a horizontal cylinder 9) are space out-of-plane straight lines, the part is asymmetric, and the part is easy to deform during heat treatment. The cross section (the network lines in the figure) of the root part is thicker, the material is transformed from austenite to martensite during heat treatment, the volume is increased, and in an unconstrained condition, two ends of the horizontal cylinder 9 are bent inwards (in the direction indicated by the arrow in fig. 1) opposite to the vertical cylinder 8, and the horizontal cylinder can also be bent and deformed towards the gravity direction due to gravity. The conventional apparatus has two main disadvantages: 1) unreasonable binding force to the part, usually manifested as too large binding force, or unbalanced binding force at the symmetrical part, resulting in reverse deformation or unnecessary deformation of the part, such as easily occurring phenomenon when using a't' type hanging device; 2) over-constraint is caused to the part, so that the part is constrained and deformed. Because the device design is unreasonable, the heat treatment deformation of the part is large, the subsequent processing requirements of the part cannot be met, and the part is scrapped.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide one kind and show and reduce the thermal treatment deflection, reduce hot back work volume, improve machining efficiency's tube-shape T type part vacuum quenching thermal treatment anti-deformation device.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a tube-shape T type part vacuum quenching thermal treatment anti-deformation device to the length direction of horizontal barrel is the X axle, uses the length direction of vertical barrel to establish rectangular coordinate system for the Y axle, uses the planar direction of perpendicular to X-Z to be the Z axle, includes the base and locates a plurality of supporting mechanism on the base, the central point of base upper surface puts and is equipped with the support cylinder that can penetrate in the vertical barrel, and a plurality of supporting mechanism symmetry branches are located the both sides of support cylinder along the X axle direction, supporting mechanism is used for restricting horizontal barrel along Z to and the removal of Y to.

The utility model discloses a supporting mechanism retrains the part deformation position, has overcome traditional device to the part cross restraint, restraint too big or restraint shortcoming such as unbalanced, make part heat treatment deflection littleer, reduce the part and scrap the risk to be favorable to improving follow-up machining efficiency.

As a further improvement of the above technical solution:

the supporting mechanism comprises a first supporting block, a second supporting block, two Z-direction limiting blocks and two Y-direction limiting blocks, the first supporting block and the second supporting block are arranged on the upper surface of the base, and the second supporting block is arranged on the outer side of the first supporting block in the X direction and is arranged on the outer side of the first supporting block in the Y direction; the two Y-direction limiting blocks are respectively arranged at two ends of the upper surface of the first supporting block along the Y-axis direction, and the opposite surfaces of the two Y-direction limiting blocks are used for abutting against the outer circumferential surface of the horizontal cylinder; the two Z-direction limiting blocks are arranged on the end face, facing one end of the first supporting block, of the second supporting block along the Y-axis direction, the two Z-direction limiting blocks are distributed from top to bottom, and the opposite faces of the two Z-direction limiting blocks are used for being abutted to the outer circumferential face of the horizontal cylinder.

First supporting block cooperation Y plays the supporting role to the horizontal barrel of spare part to the stopper, because the action of gravity takes place the downward bending deformation when preventing horizontal barrel both ends thermal treatment. The second supporting block is matched with the Z-direction limiting block to limit the heat treatment deformation of the part due to the structural characteristics, so that the deformation amount is reduced; in terms of constraint force, due to the action of the Y-direction limiting block and the Z-direction limiting block, the constraint force applied to the part is not too much or too large, so that the deformation of the part is well controlled.

Preferably, the surfaces of the two Y-direction limiting blocks opposite to each other are inclined back to the other Y-direction limiting block, and the surfaces of the two Z-direction limiting blocks opposite to each other are inclined back to the other Z-direction limiting block.

The Y-direction limiting block is detachably connected with the first supporting block, and the Z-direction limiting block is detachably connected with the second supporting block.

The supporting mechanism is provided with two.

A plurality of through holes used for passing oil are formed in the upper surface of the base, and the through holes are distributed in an array mode. The through holes are used for allowing oil to pass through quickly during quenching, so that resistance is reduced, and cooling of parts is accelerated.

Oil through holes are formed in the bottom end face and the side wall of the supporting cylinder, and the oil through holes in the side wall of the supporting cylinder correspond to the through holes in the horizontal cylinder, so that oil can be conveniently cooled from the inside of parts during quenching.

Compared with the prior art, the utility model has the advantages of:

adopt the utility model discloses clamping tube-shape T type part can make tube-shape T type part vacuum quenching go into oil with "⊥" type mode, and the through-oil hole of the network structure of device base makes the fluid circulation smooth and easy, and the part cools off fast evenly, and part material tissue changes thoroughly, retrains for the stopper part deformation position, has overcome traditional device to the part too retrain, restraint too big or restraint shortcoming such as unbalanced, makes the part heat treatment deflection littleer, reduces the part risk of scrapping to be favorable to improving follow-up machining efficiency.

Drawings

FIG. 1 is a schematic diagram of main deformation tendency of vacuum quenching of a cylindrical T-shaped part.

Fig. 2 is a schematic structural view of a cylindrical T-shaped part vacuum quenching heat treatment deformation preventing device according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the base in the embodiment of the present invention.

Fig. 4 is the utility model discloses the structural schematic before the clamping part (demolish the stopper).

FIG. 5 is a schematic view of the structure of the device with parts supported thereon.

FIG. 6 is a schematic structural view of the device for restraining the Y-direction freedom of the part after the Y-direction limiting block is installed.

FIG. 7 is a schematic structural view of the device for restraining Z-directional freedom of the part after the Z-directional limiting block is installed.

Illustration of the drawings: 1. a base; 1a, a through hole; 1d, a support cylinder; 2. a first support block; 3. a Y-direction limiting block; 4. a second support block; 5. a Z-direction limiting block; 8. a vertical cylinder; 9. and (4) a horizontal cylinder.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

Example 1:

as shown in fig. 2, the deformation preventing device for vacuum quenching heat treatment of a cylindrical T-shaped part of the present embodiment includes a base 1 and two supporting mechanisms disposed on the base 1. The supporting mechanism comprises a first supporting block 2, a second supporting block 4, two Z-direction limiting blocks 5 and two Y-direction limiting blocks 3.

In this embodiment, the device and the method of using the device will be described by establishing a rectangular coordinate system with the longitudinal direction of the horizontal cylinder 9 as the X axis, the longitudinal direction of the vertical cylinder 8 as the Z axis, and the direction perpendicular to the X-Z plane as the Y axis.

As shown in fig. 3, a supporting cylinder 1d capable of penetrating into the vertical cylinder 8 is disposed at the center of the upper surface of the base 1, two supporting mechanisms are symmetrically disposed on two sides of the supporting cylinder 1d along the X-axis direction, and the supporting mechanisms are used for limiting the movement of the horizontal cylinder 9 along the Z-direction and the Y-direction. A plurality of through holes 1a used for passing oil are formed in the upper surface of the base 1, and the through holes 1a are distributed in an array mode. Two pairs of first supporting block mounting holes 1b and two pairs of second supporting block mounting holes 1c have still been seted up to base 1 upper surface, supporting cylinder 1d is located along the both sides of X axle direction to two pairs of first supporting block mounting holes 1b branch, supporting cylinder 1d is also located along the both sides of X axle direction to two pairs of second supporting block mounting holes 1c branch, second supporting block mounting hole 1c is located corresponding first supporting block mounting hole 1b along the outside in Y direction and along the outside in X direction, one side of supporting cylinder 1d is kept away from to the outside finger.

The through holes 1a in the array form are used for oil to rapidly pass through during quenching, so that resistance is reduced, and cooling of the part is accelerated. The supporting cylinder 1d is used for limiting the displacement of the vertical cylinder 8 of the cylindrical T-shaped part, oil through holes are formed in the bottom and the side faces of the supporting cylinder, and the oil through holes in the side faces are approximately at the same height as the inner hole of the horizontal cylinder of the cylindrical T-shaped part, so that oil can cool the part from the inside.

In this embodiment, the first support block 2 is fixed to the base 1 through the corresponding first support block mounting hole 1b and the support block fastening bolt 6, and the second support block 4 is fixed to the base 1 through the corresponding second support block mounting hole 1c and the support block fastening bolt 6.

Two Y are fixed in the both ends of first supporting block 2 upper surface along the Y axle direction respectively to stopper 3 through stopper fastening bolt 7, and two Y are to stopper 3 face relative to each other back to another Y to stopper 3 slope and be used for with the outer periphery butt of horizontal barrel 9. The two Z-direction limiting blocks 5 are fixed on the end face, facing one end of the first supporting block 2, of the second supporting block 4 in the Y-axis direction through limiting block fastening bolts 7, the two Z-direction limiting blocks 5 are distributed from top to bottom, and the opposite faces of the two Z-direction limiting blocks 5 are inclined back to the other Z-direction limiting block 5 and are used for being abutted to the outer circumferential face of the horizontal cylinder 9.

First supporting block 2 cooperates Y to stopper 3, plays the supporting role to the horizontal barrel of spare part, because the action of gravity takes place downward bending deformation when preventing horizontal barrel both ends thermal treatment. The second supporting block 4 is matched with the Z-direction limiting block 5 to limit the heat treatment deformation of the part due to the structural characteristics, so that the deformation amount is reduced; in terms of constraint force, due to the action of the Y-direction limiting block 3 and the Z-direction limiting block 5, the constraint force applied to the part is not too much or too large, so that the deformation of the part is well controlled. Therefore, the defect of large deformation of the part during heat treatment caused by overlarge and excessive constraint force or unbalanced constraint force of the traditional heat treatment deformation control device on the part can be overcome; adopt the utility model discloses carry out heat treatment to the part, show and reduce the deflection, reduce hot back-machining volume, improve machining efficiency.

The T-shaped part is placed on the device in an '⊥' mode, the heat treatment deformation of the part is restrained by the two ends of the horizontal cylinder body through the supporting blocks and the limiting blocks, and the heat treatment deformation of the part is reduced, and the specific implementation method comprises the following steps:

1. the base 1 is placed in the middle of a chassis of the heat treatment hanging device, a first supporting block 2 and a second supporting block 4 are installed and fixed by a supporting block fastening bolt 6, and the figure 4 shows.

2. The large end of a part is placed downwards, the bottom of the vertical cylinder 9 is sleeved on the supporting cylinder 1d of the base 1, and the horizontal cylinder 9 is adjusted to be right above the middle of the first supporting block 2, as shown in figure 5.

3. And mounting Y-direction limiting blocks 3 (4 blocks in total) to be just in contact with the outer circle of the horizontal cylinder of the part, and fixing the Y-direction limiting blocks by using limiting block fastening bolts 7, as shown in figure 6.

4. And installing Z-direction limiting blocks 5 (4 blocks in total) to ensure that the Z-direction limiting blocks are just in contact with the excircle of the horizontal cylinder of the part and fixing the Z-direction limiting blocks by using limiting block fastening bolts 7. In order to prevent the inclination, a limiting iron wire is respectively added to the upper part of the vertical cylinder 8 of the part in the direction of nearly 90 degrees, which is shown in figure 7.

5. And moving the prepared hanging device into a furnace for heat treatment.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims

1. The utility model provides a tube-shape T type part vacuum quenching thermal treatment anti-deformation device to the length direction of horizontal barrel (9) is the X axle, uses the length direction of vertical barrel (8) to establish rectangular coordinate system for the Y axle, with the orientation on perpendicular to X-Z plane, its characterized in that, including base (1) and locate a plurality of supporting mechanism on base (1), the central point of base (1) upper surface puts and is equipped with support cylinder (1 d) that can penetrate in vertical barrel (8), and a plurality of supporting mechanism symmetry branches are located support cylinder (1 d) along the both sides of X axle direction, supporting mechanism is used for restricting horizontal barrel (9) along the removal of Z to and Y to.

2. The vacuum quenching heat treatment anti-deformation device for the cylindrical T-shaped part according to claim 1, wherein the supporting mechanism comprises a first supporting block (2), a second supporting block (4), two Z-direction limiting blocks (5) and two Y-direction limiting blocks (3), the first supporting block (2) and the second supporting block (4) are arranged on the upper surface of the base (1), and the second supporting block (4) is arranged on the outer side of the first supporting block (2) along the X direction and on the outer side of the first supporting block (2) along the Y direction; the two Y-direction limiting blocks (3) are respectively provided with two ends of the upper surface of the first supporting block (2) along the Y-axis direction, and the opposite surfaces of the two Y-direction limiting blocks (3) are used for being abutted against the outer circumferential surface of the horizontal cylinder (9); the two Z-direction limiting blocks (5) are arranged on the end face, facing one end of the first supporting block (2), of the second supporting block (4) along the Y-axis direction, the two Z-direction limiting blocks (5) are distributed from top to bottom, and the opposite faces of the two Z-direction limiting blocks (5) are used for being abutted to the outer circumferential face of the horizontal cylinder (9).

3. The vacuum quenching heat treatment deformation preventing device for the cylindrical T-shaped part as claimed in claim 2, wherein the surfaces of the two Y-direction stoppers (3) opposite to each other are inclined away from the other Y-direction stopper (3), and the surfaces of the two Z-direction stoppers (5) opposite to each other are inclined away from the other Z-direction stopper (5).

4. The vacuum quenching heat treatment deformation preventing device for the cylindrical T-shaped part as claimed in claim 3, wherein the Y-direction limiting block (3) is detachably connected with the first supporting block (2), and the Z-direction limiting block (5) is detachably connected with the second supporting block (4).

5. The vacuum quenching heat treatment deformation preventing device for the cylindrical T-shaped part as claimed in any one of claims 1 to 4, wherein two supporting mechanisms are arranged.

6. The vacuum quenching heat treatment deformation preventing device for the cylindrical T-shaped part according to any one of claims 1 to 4, wherein a plurality of through holes (1 a) for passing oil are formed in the upper surface of the base (1), and the through holes (1 a) are distributed in an array.

7. The vacuum quenching heat treatment deformation preventing device for the cylindrical T-shaped part as claimed in any one of claims 1 to 4, wherein oil through holes are formed in the bottom end surface and the side wall of the supporting cylinder (1 d), and the oil through holes in the side wall of the supporting cylinder (1 d) correspond to the through holes of the horizontal cylinder (9).