Multi-hole hard alloy blade compression molding device

Abstract

The utility model discloses a multi-hole hard alloy blade compression molding device which comprises a die body, an upper punch, a lower punch and a core rod, the die body is provided with a vertically-through die cavity, and the upper punch and the lower punch are connected in the die cavity in a sliding mode. The lower punch is provided with core rod through holes, the multiple sets of core rods are connected to the multiple core rod through holes in a penetrating mode, and the upper punch is provided with core rod blind holes corresponding to the core rod through holes. The forming device has the advantages of simple structure, high forming precision, high production efficiency and the like, and is suitable for forming the porous hard alloy blade in industrial production.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a pressing and forming device for porous hard alloy blades. Background Art

[0002] At present, cemented carbide inserts are widely used in the industrial field, and one of the key steps in manufacturing cemented carbide inserts is press forming. However, in traditional quick-change fixtures, such as the use of 3R fixtures on high-speed processing machines, there are still some problems in the press forming of cemented carbide inserts, including the inability to simultaneously achieve precise forming of multi-hole inserts, resulting in low production efficiency and unstable finished product quality. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a porous carbide blade pressing and forming device to achieve precise forming of the porous blade.

[0004] The technical solution of the utility model is: it includes a mold body, an upper punch, a lower punch and a core rod, the mold body is provided with a vertically through mold cavity, the upper punch and the lower punch can be slidably connected in the mold cavity; the lower punch is provided with a core rod through hole, multiple groups of core rods are penetrated and connected to multiple core rod through holes, and the upper punch is provided with a core rod blind hole corresponding to the core rod through holes.

[0005] Its further technical solution is:

[0006] The lower end face of the upper punch corresponds to the upper surface of the green compact blade matrix to be formed, the upper end face of the lower punch corresponds to the lower surface of the green compact blade matrix to be formed, and the inner peripheral surface of the mold cavity corresponds to the side surface of the green compact blade matrix to be formed.

[0007] Its further technical solution is:

[0008] The cross section of the mold cavity is a regular octagonal structure, and the formed pressed blank blade matrix is ​​a regular octagonal prism structure.

[0009] Its further technical solution is:

[0010] A plurality of groups of core rods are fixedly arranged on a connecting handle, and the core rods are fixedly connected to the connecting handle by screws.

[0011] Its further technical solution is:

[0012] The connecting handle drives the core rod to pass through the core rod through hole through the driving device.

[0013] Its further technical solution is:

[0014] The driving device is driven by a cylinder, and the connecting handle is connected to the pneumatic stroke output end of the cylinder.

[0015] Its further technical solution is:

[0016] A mounting die frame is provided below the die body, and the lower punch is fixedly arranged on the mounting die frame.

[0017] Its further technical solution is:

[0018] The lower punch is fixedly connected to the mounting die frame through a core rod guide block, and the core rod guide block is provided with a guide through hole coaxial with the core rod through hole.

[0019] Its further technical solution is:

[0020] The lower punch is threadedly connected to the core rod guide block via bolts, and the bolts are sequentially passed through the upper punch and the core rod guide block from top to bottom and then threadedly connected to the mounting die frame.

[0021] The beneficial technical effect of the utility model is: a plurality of corresponding core rod through holes and core rod blind holes are respectively arranged on the lower punch and the upper punch, and multiple groups of core rods are inserted into the core rod through holes and connected with the core rod blind holes. By controlling the action of the upper punch and the lower punch, the upper punch and the lower punch are pressed against each other, so that the cavity formed by the upper punch, the lower punch, the inner side of the mold body and the outer peripheral surface of the multiple groups of core rods can accurately form the hard alloy blank to be formed. The utility model has the advantages of simple structure, high forming accuracy, high production efficiency, etc., and is suitable for the forming processing of porous hard alloy blades in industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall cross section of the utility model;

[0024] Figure 3 It is an exploded schematic diagram of the overall structure of the utility model;

[0025] Figure 4 It is a partial structural schematic diagram of the utility model;

[0026] Figure 5 It is a schematic diagram of the compacted blade matrix formed by the utility model;

[0027] Figure 6 This is a schematic diagram of the core rod structure of the utility model;

[0028] Among them: 1. mold body; 11. mold cavity; 2. upper punch; 21. core rod blind hole; 3. lower punch; 31. core rod through hole; 4. mounting mold frame; 5. blanking blade base; 51. center hole; 6. core rod structure; 61. core rod; 62. connecting handle; 7. core rod guide block; 71. guide through hole. DETAILED DESCRIPTION

[0029] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0030] Figures 1 to 3 The utility model shows a porous carbide blade pressing and forming device, including a mold body 1, the mold body 1 is provided with a vertically through mold cavity 11, and also includes an upper punch 2 and a lower punch 3 that can move up and down and insert into or move away from the mold cavity 11, the upper punch 2 and the lower punch 3 are arranged opposite to each other, when the upper punch 2 and the lower punch 3 are inserted into the mold cavity 11, they form a closed cavity with the inner peripheral wall of the mold cavity 11, and the closed cavity is used for forming CNC blades.

[0031] The mold body 1 is fixedly arranged in the machine tool, and a mounting mold frame 4 which is convenient for disassembly is arranged below the mold body 1 , and the lower punch 3 is fixedly arranged on the mounting mold frame 4 .

[0032] In this embodiment, the lower end face of the upper punch 2 corresponds to the upper surface of the pressed blade substrate 5 to be formed, the upper end face of the lower punch 3 corresponds to the lower surface of the pressed blade substrate 5 to be formed, and the inner circumferential surface of the mold cavity 11 corresponds to the side surface of the pressed blade substrate 5 to be formed. The pressing of the lower end face of the upper punch 2 and the upper end face of the lower punch 3 in the mold cavity 11 can realize the forming of the pressed blade substrate 5. The structures of the upper punch 2, the lower punch 3 and the inner circumferential surface of the mold cavity 11 can be adjusted to form pressed blade structures with different structures and multiple parameters, so as to ensure that the formed pressed blade has multiple cutting performances at the same time, and has a simple structure and is easy to operate.

[0033] In this embodiment, the cross section of the mold cavity 11 is a regular octagonal structure, and the formed pressed blade substrate 5 is a regular octagonal prism structure.

[0034] like Figures 4 to 6 As shown, a core rod structure 6 is provided in the mounting mold frame 4, and the lower punch 3 is provided with a core rod through hole 31. The core rod 61 of the core rod structure 6 is passed through the core rod through hole 31 and is inserted and matched with the core rod blind hole 21 provided on the upper punch 2 to cooperate in realizing the forming of the center hole 51 of the blank blade base 5.

[0035] Furthermore, in order to cooperate with the forming of multiple center holes 51 of the pressed blade base 5, the core rod structure 6 includes multiple groups of core rods 61 corresponding to the preset multiple center holes 51, and the multiple groups of core rods 61 are fixed on a connecting handle 62. The core rod 61 and the connecting handle 62 can be fixedly connected by screws, welded or integrally formed.

[0036] Furthermore, the lower punch 3 is fixedly connected to the mounting die frame 4 via a core rod guide block 7 , and the core rod guide block 7 is provided with a guide through hole 71 coaxial with the core rod through hole 31 .

[0037] During installation, the core rod 61 is successively passed through the lower punch 3 and the core rod guide block 7, and then inserted from the upper end of the mounting mold frame 4, and then passed through the lower punch 3 and the core rod guide block 7 from top to bottom in sequence by a bolt and threadedly connected to the mounting mold frame 4, and the connecting handle 62 is connected to the driving output end of the driving device arranged at the bottom of the mounting mold frame 4. When the core rod 61 corresponds to the guide through hole 71, the core rod 61 moves up to the set position under the drive of the driving device.

[0038] In this embodiment, the driving device is driven by a cylinder, and the connecting handle 62 is connected to the pneumatic stroke output end of the cylinder.

[0039] When in use, the lower punch 3 enters the die cavity 11 from the bottom of the die body 11 to reach the set position, and the core rod 61 moves up and extends out of the lower punch 3. At this time, the lower punch 3, the outer peripheral surface of the core rod 61 and the die cavity 11 form a filling cavity, and the cemented carbide blank to be formed is filled into the filling cavity; after the filling is completed, under the one-to-one correspondence between the core rod blind hole 21 of the upper punch 2 and the core rod 61, the upper punch 2 moves downward into the die cavity 11 and continues to move downward to the set position relative to the die cavity 11, and the blank blade matrix 5 is pressed and formed; after the pressing is completed, the upper punch 2 moves upward to above the die body 1, and the lower punch 3 moves upward relative to the die body 1 and pushes out the formed blank blade matrix 5.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A porous cemented carbide insert pressing and forming device, comprising a die body (1), an upper punch (2), a lower punch (3) and a core rod (61), wherein the die body (1) is provided with a vertically penetrating die cavity (11), and the upper punch (2) and the lower punch (3) are slidably connected in the die cavity (11); characterized in that: The lower punch (3) is provided with a core rod through hole (31), a plurality of groups of core rods (61) are penetrated and connected to the plurality of core rod through holes (31), and the upper punch (2) is provided with a core rod blind hole (21) corresponding to the core rod through holes (31).

2. The porous carbide blade pressing and forming device according to claim 1, characterized in that: The lower end face of the upper punch (2) corresponds to the upper surface of the green compact blade substrate (5) to be formed, the upper end face of the lower punch (3) corresponds to the lower surface of the green compact blade substrate (5) to be formed, and the inner peripheral surface of the mold cavity (11) corresponds to the side surface of the green compact blade substrate (5) to be formed.

3. The porous carbide blade pressing and forming device according to claim 2, characterized in that: The cross section of the mold cavity (11) is in a regular octagonal structure, and the formed pressed blank blade matrix (5) is in a regular octagonal prism structure.

4. The porous carbide blade pressing and forming device according to claim 1, characterized in that: A plurality of groups of core rods (61) are fixedly arranged on a connecting handle (62), and the core rods (61) and the connecting handle (62) are fixedly connected by screws.

5. The porous carbide blade pressing and forming device according to claim 4, characterized in that: The connecting handle (62) drives the core rod (61) through the core rod through hole (31) through the driving device.

6. The porous carbide blade pressing and forming device according to claim 5, characterized in that: The driving device is driven by a cylinder, and the connecting handle (62) is connected to the pneumatic stroke output end of the cylinder.

7. The porous carbide blade pressing and forming device according to claim 1, characterized in that: A mounting die frame (4) is provided below the die body (1), and the lower punch (3) is fixedly arranged on the mounting die frame (4).

8. The porous carbide insert pressing and forming device according to claim 7, characterized in that: The lower punch (3) is fixedly connected to the mounting die frame (4) via a core rod guide block (7), and the core rod guide block (7) is provided with a guide through hole (71) coaxial with the core rod through hole (31).

9. A porous carbide blade pressing and forming device according to claim 8, characterized in that: The lower punch (3) and the core rod guide block (7) are threadedly connected via bolts, and the bolts are sequentially passed through the lower punch (3) and the core rod guide block (7) from top to bottom and are threadedly connected to the mounting mold frame (4).

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