Heat treatment jig

Abstract

The utility model discloses a heat treatment jig which comprises a jig body, a fixing through groove, a first avoiding groove, a second avoiding groove and a third avoiding groove are formed in the jig body, and the first avoiding groove, the second avoiding groove and the third avoiding groove are sequentially formed in the length direction of the fixing through groove. And the first avoiding groove, the second avoiding groove and the third avoiding groove are communicated with the fixed through groove. The heat treatment jig disclosed by the utility model is simple in structure and convenient to use, and can improve the stress uniformity of a product with a thin plate structure so as to reduce the probability of bending deformation, fracture and other defects of the product with the thin plate structure.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder metallurgy, in particular to a heat treatment jig. Background Art

[0002] Metal powder injection molding technology is a new type of powder metallurgy technology formed by introducing modern plastic injection molding technology into the field of powder metallurgy. Among them, in the heat treatment process of metal powder injection molding, the product needs to go through the process of heating, heat preservation and rapid cooling in sequence. During the heating and heat preservation process, the product will expand in size after thermal expansion, and during the rapid cooling process, the product will cool down rapidly and shrink.

[0003] like Figure 1 The thin plate structure product shown has the characteristics of thin overall thickness and long length. However, the existing heat treatment jig has poor fixation on the product, which leads to uneven force at different positions of the product, resulting in large shrinkage differences at different positions of the product. The product will have defects such as bending, deformation, and breakage. The existing heat treatment jig leads to a low yield rate of thin plate structure products. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a heat treatment fixture formed by powder metallurgy to solve the problem that the existing heat treatment fixture has poor fixation on the product and thus leads to low product yield.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a heat treatment jig, which includes a jig body, on which a fixed through groove, a first avoidance groove, a second avoidance groove and a third avoidance groove are provided, and the first avoidance groove, the second avoidance groove and the third avoidance groove are arranged in sequence along the length direction of the fixed through groove, and the first avoidance groove, the second avoidance groove and the third avoidance groove are all connected with the fixed through groove.

[0006] Furthermore, the fixing through groove is arranged through the width direction of the fixture body.

[0007] Furthermore, the fixture body is provided with a plurality of the fixing through grooves along its length direction.

[0008] Furthermore, the first avoidance groove, the second avoidance groove and the third avoidance groove are all through grooves arranged along the length direction of the fixture body.

[0009] Furthermore, the groove bottom of the first avoidance groove is coplanar with the groove bottom of the fixed through groove, and the groove bottom of the third avoidance groove is coplanar with the groove bottom of the fixed through groove.

[0010] Furthermore, the groove depth of the second avoidance groove is greater than the groove depth of the fixed through groove.

[0011] Furthermore, the width of the first avoidance groove is equal to the width of the third avoidance groove.

[0012] Furthermore, the width of the first avoidance groove and the width of the third avoidance groove are both 3.0-3.2 mm.

[0013] Furthermore, the width of the second avoidance groove is 11.0-11.2 mm.

[0014] Furthermore, the width of the fixed through groove is 0.7-0.9 mm.

[0015] The beneficial effects of the utility model are as follows: the heat treatment fixture described in the utility model has a simple structure and is convenient and quick to operate for placing products. In actual application, products with thin plate structures can be placed in the fixed through grooves, which have good fixation properties for the thin plate structure products. The fixed through grooves can improve the force uniformity of the products, thereby reducing the differences in cooling shrinkage at different positions of the products, and the fixed through grooves have a certain limiting effect on the shrinkage of the products, thereby avoiding defects such as bending, deformation, and breakage of the products. The heat treatment fixture can correspondingly improve the yield rate of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a thin plate structure product;

[0017] Figure 2 This is a schematic structural diagram of the heat treatment fixture of the utility model in one embodiment;

[0018] Description of labels:

[0019] 1. Fixture body;

[0020] 2. Fixed through slot;

[0021] 3. The first avoidance slot;

[0022] 4. The second avoidance slot;

[0023] 5. The third avoidance slot;

[0024] 6. Product; 61. Positioning column; 62. First screw column; 63. Wing part; 64. Second screw column. DETAILED DESCRIPTION

[0025] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0026] Please refer to Figure 2The utility model provides a heat treatment fixture, which includes a fixture body 1, on which a fixed through groove 2, a first avoidance groove 3, a second avoidance groove 4 and a third avoidance groove 5 are provided. The first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 are sequentially arranged along the length direction of the fixed through groove 2, and the first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 are all connected with the fixed through groove 2.

[0027] From the above description, it can be seen that the heat treatment jig described in the utility model has a simple structure and is convenient and quick to place the product 6. In actual application, the thin plate structure product 6 can be placed in the fixed through groove 2. The fixed through groove 2 has good fixation for the thin plate structure product 6. The fixed through groove 2 can improve the force uniformity of the product 6, thereby reducing the difference in cooling shrinkage at different positions of the product 6, and the fixed through groove 2 has a certain limiting effect on the shrinkage of the product 6, avoiding defects such as bending, deformation, and breakage of the product 6. The heat treatment jig can correspondingly improve the yield rate of the product 6.

[0028] Furthermore, the fixing through groove 2 is arranged to penetrate along the width direction of the fixture body 1 .

[0029] Furthermore, the fixture body 1 is provided with a plurality of fixing grooves 2 along its length direction.

[0030] It can be seen from the above description that the heat treatment jig can accommodate multiple products 6 at the same time, and the heat treatment jig is convenient and quick to use, which is beneficial to improving the processing efficiency of the product 6.

[0031] Furthermore, the first avoidance groove 3 , the second avoidance groove 4 and the third avoidance groove 5 are all through grooves arranged along the length direction of the fixture body 1 .

[0032] It can be seen from the above description that the heat treatment fixture has a simple structure and low processing cost.

[0033] Furthermore, the bottom of the first avoidance groove 3 is coplanar with the bottom of the fixed through groove 2 , and the bottom of the third avoidance groove 5 is coplanar with the bottom of the fixed through groove 2 .

[0034] Furthermore, the groove depth of the second avoidance groove 4 is greater than the groove depth of the fixed through groove 2 .

[0035] From the above description, it can be seen that the depths of the first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 are respectively set to correspond to the widths of the first screw column 62, the wing portion 63 and the second screw column 64 of the product 6, which can further improve the uniformity of the force supported by the heat treatment fixture on the product 6.

[0036] Furthermore, the width of the first avoidance groove 3 is equal to the width of the third avoidance groove 5 .

[0037] Furthermore, the width of the first avoidance groove 3 and the width of the third avoidance groove 5 are both 3.0-3.2 mm.

[0038] Furthermore, the width of the second avoidance groove 4 is 11.0-11.2 mm.

[0039] Furthermore, the width of the fixing groove 2 is 0.7-0.9 mm.

[0040] Embodiment 1

[0041] Please refer to Figure 1 and Figure 2 Embodiment 1 of the utility model provides a heat treatment jig, which includes a jig body 1, on which a fixed through groove 2, a first avoidance groove 3, a second avoidance groove 4 and a third avoidance groove 5 are provided, wherein the first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 are sequentially arranged along the length direction of the fixed through groove 2, and the first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 are all connected with the fixed through groove 2.

[0042] In this embodiment 1, the heat treatment fixture is used for Figure 1 The thin plate structure product 6 shown is subjected to a heat treatment process of metal powder injection molding. Specifically, both ends of the product 6 in the length direction are provided with positioning columns 61, and the product 6 is also provided with a first screw column 62, a wing portion 63 and a second screw column 64 in sequence along its length direction.

[0043] Among them, the fixture body is provided with a fixed through groove 2 corresponding to the product 6 as a whole, and the first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 are provided in sequence corresponding to the first screw column 62, the wing part 63 and the second screw column 64. In actual application, the product 6 is placed in the fixed through groove 2 as a whole, the positioning columns 61 at both ends of the product 6 are located outside the fixture body, the first screw column 62 is located in the first avoidance groove 3, the wing part 63 is located in the second avoidance groove 4, and the second screw column 64 is located in the third avoidance groove 5. When the product 6 is subjected to the heat treatment process, after the product 6 is placed in place on the fixture body, the fixed through groove 2 can play a good fixing role on the product 6 and make the product 6 evenly stressed.

[0044] like Figure 1The product 6 shown is subjected to a heat treatment process using the heat treatment fixture provided in the first embodiment. The product 6 is placed in the fixed through groove 2. The fixed through groove 2 can play an excellent fixing role on the product 6, so that each position of the product 6 is subjected to uniform force, thereby reducing the shrinkage difference caused by uneven force at different positions of the product 6 during the rapid cooling process; in addition, the fixed through groove 2 can have a certain limiting effect on the shrinkage of the product 6. Therefore, the product 6 is subjected to a heat treatment process using the heat treatment fixture provided in the first embodiment. When the product 6 cools and shrinks, there will be no defects such as bending, deformation, and breakage. This heat treatment fixture can improve the yield rate of the product 6.

[0045] In the first embodiment of the present invention, the fixed through groove 2 is arranged along the width direction of the jig body 1, and the jig body 1 is provided with a plurality of fixed through grooves 2 along its length direction; the first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 are all through grooves arranged along the length direction of the jig body 1. Preferably, the jig body 1 is made of corundum mullite, which has excellent high temperature stability and is not easily deformed under high temperature awakening. The heat treatment jig has a simple structure and low processing cost, and the overall width of the jig body 1 is set to correspond to the spacing between the two positioning columns 61 of the product 6, and the positioning, placement and removal of the heat treatment jig are convenient and simple. In addition, the heat treatment jig can perform heat treatment processes on multiple products 6 at the same time, which improves the efficiency of the heat treatment process of the product 6.

[0046] Specifically, refer to Figure 1 It is not difficult to see that the width of the first screw column 62 and the second screw column 64 on the product 6 is equal to the width of the entire product 6, and the width of the wing portion 63 is greater than the width of the entire product 6. When placed, the product 6 is placed vertically in the fixed through groove 2. Therefore, in this embodiment 1, the bottom of the first avoidance groove 3 is coplanar with the bottom of the fixed through groove 2, the bottom of the third avoidance groove 5 is coplanar with the bottom of the fixed through groove 2, and the depth of the second avoidance groove 4 is greater than the depth of the fixed through groove 2.

[0047] Furthermore, in the first embodiment, the width of the first avoidance groove 3 is equal to the width of the third avoidance groove 5, and both widths are 3.1 mm; the width of the second avoidance groove 4 is 11.1 mm; and the width of the fixed through groove 2 is 0.8 mm.

[0048] Of course, in other embodiments of the present invention, the sizes of the first avoidance groove 3, the second avoidance groove 4 and the third avoidance groove 5 can be set according to actual application requirements.

[0049] In summary, the heat treatment jig described in the utility model has a simple structure and is convenient and quick to place the product 6. In actual application, the thin plate structure product 6 can be placed in the fixed through groove 2. The fixed through groove 2 has good fixation for the thin plate structure product 6. The fixed through groove 2 can improve the force uniformity of the product 6, thereby reducing the difference in cooling shrinkage at different positions of the product 6, and the fixed through groove 2 has a certain limiting effect on the shrinkage of the product 6, avoiding defects such as bending, deformation, and breakage of the product 6. The heat treatment jig can correspondingly improve the yield rate of the product 6.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A heat treatment fixture, characterized in that: The jig body comprises a fixture body, on which a fixed through groove, a first avoidance groove, a second avoidance groove and a third avoidance groove are provided, wherein the first avoidance groove, the second avoidance groove and the third avoidance groove are sequentially arranged along the length direction of the fixed through groove, and the first avoidance groove, the second avoidance groove and the third avoidance groove are all connected with the fixed through groove.

2. The heat treatment jig according to claim 1, characterized in that: The fixing through groove is arranged through the width direction of the fixture body.

3. The heat treatment jig according to claim 2, characterized in that: The fixture body is provided with a plurality of the fixing through slots along its length direction.

4. The heat treatment jig according to claim 1, characterized in that: The first avoidance groove, the second avoidance groove and the third avoidance groove are all through grooves arranged along the length direction of the fixture body.

5. The heat treatment jig according to claim 1, characterized in that: The groove bottom of the first avoidance groove is coplanar with the groove bottom of the fixed through groove, and the groove bottom of the third avoidance groove is coplanar with the groove bottom of the fixed through groove.

6. The heat treatment jig according to claim 1, characterized in that: The groove depth of the second avoidance groove is greater than the groove depth of the fixed through groove.

7. The heat treatment jig according to claim 1, characterized in that: The width of the first avoidance groove is equal to the width of the third avoidance groove.

8. The heat treatment jig according to claim 7, characterized in that: The width of the first avoidance groove and the width of the third avoidance groove are both 3.0-3.2 mm.

9. The heat treatment jig according to claim 1, characterized in that: The width of the second avoidance groove is 11.0-11.2 mm.

10. The heat treatment jig according to claim 1, characterized in that: The width of the fixed through groove is 0.7-0.9 mm.

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