Drill piece pressing die capable of achieving uniform powder distribution

Abstract

The utility model discloses a drill piece pressing die with uniform powder distribution, which comprises an upper die and a lower die, the upper die is provided with a pressing head, the pressing head is provided with a groove for pressing a drill piece, the lower die is provided with a cavity for containing metal powder, and the cavity is provided with a cavity for containing metal powder. A first bearing part is arranged on the lower portion in the cavity, and second bearing parts capable of ascending and descending are further arranged on the lower portion in the cavity and located on the two sides of the first bearing part. During pressing, the density of the metal powder on the two sides of the first bearing part in the cavity is changed by adjusting the height of the second bearing part in the cavity, it is ensured that the metal powder is evenly distributed in the cavity, and the situation that the drill piece is sunken towards the middle and deforms after pressing and sintering is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a drill bit pressing mold with uniform powder distribution. Background Technology

[0002] Existing impact drill bits are made from metal powder as raw material. The metal powder is pressed into shape using a pressing mold, and then solidified by high-temperature sintering to give it a certain density and strength.

[0003] As attached Figure 1 As shown, in the actual pressing process, to achieve uniform powder distribution, the drill bit head of the lower mold is designed to face downwards. After sintering, the drill bit pressed by the mold deforms inwards, mainly due to the uneven height of the middle and sides of the drill bit, forming a pyramidal shape. During pressing, the density on both sides is higher than that in the middle, causing the drill bit to deform inwards after sintering. Therefore, the applicant has made a beneficial design and found a solution to the above problem. The technical solution to be introduced below is based on this background. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional pressing mold design and to provide a product with uniform powder distribution and resistance to deformation.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A die for pressing drill bits with uniform powder distribution includes an upper die and a lower die. The upper die is provided with a pressing head and a groove for pressing drill bits. The lower die is provided with a cavity for receiving metal powder. A first support portion is provided below the cavity, and a second support portion that can be raised and lowered is also provided below the cavity and located on both sides of the first support portion.

[0007] Preferably, the lower mold has a plurality of positioning holes with the dot as the axis.

[0008] Preferably, the bottom of the first support portion is provided with a guide sleeve, the guide sleeve is provided with a connecting rod, and the two sides of the guide sleeve are provided with guide holes.

[0009] Preferably, the bottom of the two second support portions is provided with a linkage block and located between the lower die head and the guide sleeve. The linkage block is provided with a through groove for the first support portion to pass through. Guide rods are provided on both sides of the linkage block and pass through guide holes. The two guide rods are provided with operating parts.

[0010] Preferably, the second support portion is higher than the first support portion.

[0011] Beneficial effects:

[0012] Compared with the prior art, the powder distribution uniform drill press mold has the advantages that:

[0013] The utility model discloses, in the pressing, through the height of second support department in the height of cavity, change the density of metal powder in the cavity first support department two sides, ensure that metal powder distributes evenly in the cavity, prevent the situation that the drill piece appears the deformation of recessing to the middle after pressing sintering. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 For prior art structure schematic Figure 1 ;

[0015] Figure 2 For the structure schematic of the powder distribution uniform drill press mold of the utility model Figure 2 ;

[0016] Figure 3 For the side section structure schematic of the powder distribution uniform drill press mold of the utility model;

[0017] The corresponding relationship between the annotations of the drawings and the component names in the drawings is as follows:

[0018] The annotations of the drawings are as follows: 1, upper die; 2, lower die; 3, first support department; 4, second support department; 11, pressing head; 12, type groove; 21, cavity; 22, positioning hole; 31, guide sleeve; 32, connecting rod; 33, guide hole; 41, linkage block; 42, through slot; 43, guide rod; 44, operation part. DETAILED DESCRIPTION

[0019] The technical solutions of the utility model will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] In the description of the utility model, it is understood that the directions or position relations of the terms "upper", "lower", "left", "right" and the like indicated in the drawings are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, so it cannot be understood as a limitation on the utility model.

[0021] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0022] Reference example Figure 2 and Figure 3 A die for pressing drill bits with uniform powder distribution includes an upper die 1 and a lower die 2. The upper die 1 is provided with a pressing head 11, and the pressing head 11 is provided with a groove 12 for pressing drill bits. The lower die 2 is provided with a cavity 21 for accommodating metal powder. A first support part 3 is provided at the bottom of the cavity 21. A second support part 4 that can be raised and lowered is also provided at the bottom of the cavity 21 and is located on both sides of the first support part 3. The groove 12 has a triangular structure with a notch and is in the shape of a spire. After pressing, the head of the drill bit faces upward.

[0023] It is worth mentioning that the lower mold 2 is provided with several positioning holes 22 with the dot as the axis, and the positioning holes 22 provide a guiding function for the upper mold 1 to lift.

[0024] It is worth mentioning that the bottom of the first support part 3 is provided with a guide sleeve 31, the guide sleeve 31 is provided with a connecting rod 32, and the guide sleeve 31 is provided with guide holes 33 on both sides. The guide sleeve 31 restricts the distance of the second support part 4 from falling. The connecting rod 32 is connected and fixed to the support component of the processing platform. The guide holes 33 provide guidance for the lifting and lowering of the second support part 4.

[0025] It is worth mentioning that the bottom of the two second support parts 4 is provided with a linkage block 41, which is located between the lower mold head and the guide sleeve 31. The linkage block 41 is provided with a through groove 42 for the first support part 3 to pass through. The two sides of the linkage block 41 are provided with guide rods 43, which pass through the guide hole 33. The two guide rods 43 are provided with an operating part 44. The linkage block 41 makes the second support parts 4 perform synchronous rising and falling movements to keep the density of the metal powder on both sides of the cavity 21 changing uniformly. The operating part 44 is connected and fixed to the drive component of the equipment.

[0026] It is worth mentioning that the second support part 4 is higher than the first support part 3, and a height difference is formed between the second support part 4 and the first support part 3. After high-temperature sintering, a protrusion will be formed at the bottom of the drill bit. The protrusion is embedded in the groove corresponding to the shank, and the connection between the drill bit and the shank is stabilized by welding.

[0027] Example

[0028] After the metal powder is poured into the cavity 21, the second supporting part 4 is driven to descend by the operation part 44, and after the linkage block 41 abuts against the guide sleeve 31, the density of the metal powder on both sides of the cavity 21 is changed, so that the density of the metal powder in the middle and on both sides of the cavity 21 is kept uniform, and the situation that the drill bit is deformed and recessed to the middle after pressing and sintering is prevented.

[0029] The product can realize uniform distribution of the powder and deformation prevention through the design scheme.

[0030] The above is a further detailed description of the utility model in combination with the specific embodiments, and the utility model is not limited to the description. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope determined by the claims of the utility model.

Claims

1. A powder-distributing uniform drill-pressing die comprising an upper die (1) and a lower die (2), characterized in that: The upper die (1) is provided with a pressing head (11) provided with a type groove (12) for pressing the drill piece, the lower die (2) is provided with a type cavity (21) for containing metal powder, the lower part of the type cavity (21) is provided with a first supporting part (3), the lower part of the type cavity (21) is further provided with a second supporting part (4) which can be lifted and is located on both sides of the first supporting part (3).

2. The drill bit pressing die for uniformly distributing powder according to claim 1, wherein: The lower die (2) is provided with a plurality of positioning holes (22) with a round dot as the center.

3. The drill bit pressing die for distributing powder uniformly according to claim 2, wherein: The bottom of the first supporting part (3) is provided with a guide sleeve (31) provided with a connecting rod (32), and the two sides of the guide sleeve (31) are provided with guide holes (33).

4. The drill bit pressing die for uniformly distributing powder according to claim 3, wherein: The bottom of the two second supporting parts (4) is provided with a linkage block (41) located between the lower die head and the guide sleeve (31), the linkage block (41) is provided with a through groove (42) for the first supporting part (3) to pass through, the two sides of the linkage block (41) are provided with guide rods (43) passing through the guide holes (33), and the two guide rods (43) are provided with operation parts (44).

5. The uniform powder distribution drill insert press die of any of claims 2-4, wherein: The second supporting part (4) is higher than the first supporting part (3).

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