Pinion chamfering extrusion die

Abstract

The utility model relates to the technical field of dies, and discloses a pinion chamfering extrusion die which comprises a base and a lower die holder, the lower die holder is arranged at the top end of the base, a top seat is arranged at the top end of the lower die holder, and an upper die holder is arranged at the bottom end of the top seat. When the pinion chamfering extrusion die is used, a second mandrel, a male die body and a male die fixing ring which are arranged in the upper die base are matched with a chamfering punch, a second pressure block, a first mandrel, a first pressure block and an ejector rod which are arranged in the top end of the lower die base, and then a pinion workpiece is placed in the middle of the top end of the upper female die; when the top seat drives the second core shaft and the male die body to extrude and machine a workpiece downwards, the small gear can be directly extruded to form a chamfer shape during cold pressing machining, the step of chamfering again in the later period is omitted, the machining efficiency of the small gear is improved, and the problem that the small gear cannot be conveniently and rapidly extruded and chamfered is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion dies, in particular to a pinion chamfering extrusion die. Background Art

[0002] An extrusion die is a device used in the extrusion molding process of metal or plastic materials. When the die is in use and the pressure applied by the extruder acts on the material, the material can be formed into the desired shape through the die, and extruded through a certain gap under the action of the die to complete the extrusion molding of the material. Pinions are small gears produced compared to some normal gears and large gears. Through mutual cooperation with other gears, they can play a variety of roles such as driving, rotating, transmitting and reducing friction. They play an important role in mechanical structures. In the process of pinion processing, due to special modeling and process requirements, pinion extrusion dies will be used for production and processing.

[0003] However, when the pinion extrusion processing die is used to perform cold pressing on the pinion workpiece, the outer corners of the extruded pinion are relatively sharp, and external chamfering equipment is required to perform additional chamfering processing on the pinion. The processing process of the pinion is relatively cumbersome and time-consuming, and there are shortcomings, which makes it inconvenient to perform convenient extrusion chamfering processing on the pinion.

[0004] Now, a new pinion chamfering extrusion die is proposed to solve the above-mentioned shortcomings. Utility Model Content

[0005] The utility model aims to provide a pinion chamfering extrusion die to solve the problem in the above background technology that it is inconvenient to perform convenient extrusion chamfering processing on the pinion.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a pinion chamfering extrusion die, comprising a base and a lower die base, the top of the base is provided with a lower die base, and the top of the lower die base is provided with a top base, the bottom end of the top base is provided with an upper die base, the top of the lower die base is installed and fixed with a bottom plate, the top of the lower die base is provided with an upper die inside the top of the lower die base, and the bottom end of the upper die is provided with a gear die, the bottom end of the gear die is provided with a second pressure block, the bottom end of the second pressure block is provided with a first pressure block, the interior of the gear die is penetrated by a chamfering punch, and the interior of the chamfering punch is provided with a first core shaft, the interior of the first core shaft is provided with a ejection rod, the bottom end of the upper die base is installed and fixed with a top plate, the interior of the bottom end of the upper die base is provided with a punch fixing ring, the interior of the punch fixing ring is vertically fixed with a punch body, and the interior of the punch body is penetrated by a second core shaft.

[0007] Preferably, the top end of the upper die passes through the interior of the bottom plate, the bottom end of the ejector rod respectively passes through the interior of the chamfering punch, the gear die and the first pressure block, the bottom end of the punch fixing ring passes through the interior of the top plate, and the bottom ends of the second core shaft and the punch body respectively pass through the interior of the bottom end of the punch fixing ring.

[0008] Preferably, a guide rod is vertically fixed inside the left side of the top end of the base, and a fixed sliding sleeve is installed and fixed on the left side of the bottom end of the top seat.

[0009] Preferably, the top end of the guide rod passes through the interior of the fixed sleeve.

[0010] Preferably, mounting grooves are respectively provided at the bottom end of the top seat and the top end of the base, reserved openings are respectively provided at the inside on both sides of the top end of the top seat and the inside on both sides of the bottom end of the base, and the reserved openings respectively penetrate the inside of the base and the top seat, hexagon socket bolts are arranged inside the reserved openings, and threaded holes are respectively provided at the inside on both sides of the top end of the upper mold seat and the inside on both sides of the bottom end of the lower mold seat.

[0011] Preferably, the hexagon socket bolt passes through the interior of the reserved opening.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the pinion chamfering extrusion die not only realizes convenient extrusion chamfering processing of the pinion, realizes convenient guiding and limiting of the extrusion processing components inside the die when in use, but also realizes convenient disassembly, assembly and replacement of the components inside the extrusion die;

[0013] By providing a base, a lower die base, a top base, an upper die base, a top plate, a bottom plate, a push rod, a first pressure block, a first mandrel, a second pressure block, a chamfering punch, a gear die, an upper die, a second mandrel, a punch body and a punch fixing ring, when the extrusion die is used, by providing the second mandrel, the punch body and the punch fixing ring inside the upper die base, in conjunction with the chamfering punch, the second pressure block, the first mandrel, the first pressure block and the push rod inside the top end of the lower die base, after the pinion workpiece is placed in the middle position of the top end of the upper die, the top base drives the second mandrel and the punch body downward to extrude the workpiece, so that the pinion can be directly extruded into a chamfered shape during cold pressing, thereby omitting the step of chamfering again in the later stage, thereby improving the processing efficiency of the pinion;

[0014] By providing a base, a guide rod, a fixed sleeve and a top seat, when the mold is in use, a guide rod is vertically installed between the base and the top seat. When the top seat moves down for extrusion processing, the fixed sleeve can slide up and down on the outside of the guide rod in a directional manner, and the extrusion process of the pinion gear is accurately positioned to avoid collision between the extrusion components inside the mold;

[0015] By providing a base, a lower die seat, a top seat, an upper die seat, a mounting groove, a reserved opening, an hexagon socket bolt and a threaded hole, when the extrusion die is in use, the hexagon socket bolts provided in the reserved openings on both sides of the bottom end of the base and on both sides of the top end of the top seat can be respectively screwed out upward from the threaded holes inside the lower die seat and the upper die seat, and the internal components of the extrusion die can be quickly disassembled. The assembled structure is convenient for disassembly, assembly and replacement of the extrusion components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a lower die base of the utility model;

[0018] Figure 3 It is a schematic diagram of a partial cross-sectional structure of an upper die seat of the utility model;

[0019] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a top seat of the utility model from the front.

[0020] In the figure: 1. base; 2. lower die seat; 3. guide rod; 4. fixed sliding sleeve; 5. top seat; 6. upper die seat; 7. top plate; 8. bottom plate; 9. ejector rod; 10. first pressure block; 11. first mandrel; 12. second pressure block; 13. chamfering punch; 14. gear die; 15. upper die; 16. second mandrel; 17. punch body; 18. punch fixing ring; 19. mounting groove; 20. reserved opening; 21. hexagon socket bolt; 22. threaded hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1-4A pinion chamfering extrusion die comprises a base 1 and a lower die base 2, wherein a lower die base 2 is arranged at the top of the base 1, and a top base 5 is arranged at the top of the lower die base 2, an upper die base 6 is arranged at the bottom end of the top base 5, a bottom plate 8 is fixedly installed at the top end of the lower die base 2, an upper die 15 is arranged inside the top end of the lower die base 2, and a gear die 14 is arranged at the bottom end of the upper die 15, a second pressure block 12 is arranged at the bottom end of the gear die 14, a first pressure block 10 is arranged at the bottom end of the second pressure block 12, a chamfering punch 13 is arranged through the inside of the gear die 14, and a first mandrel 11 is arranged inside the chamfering punch 13, and a ejector rod 9 is arranged inside the first mandrel 11, a top plate 7 is fixedly installed at the bottom end of the upper die base 6, a punch fixing ring 18 is arranged inside the bottom end of the upper die base 6, a punch body 17 is vertically fixed inside the punch fixing ring 18, and a second mandrel 16 is arranged through the inside of the punch body 17;

[0023] The top end of the upper die 15 penetrates the interior of the bottom plate 8, the bottom end of the ejector rod 9 penetrates the interior of the chamfering punch 13, the gear die 14 and the first pressure block 10 respectively, the bottom end of the punch fixing ring 18 penetrates the interior of the top plate 7, and the bottom ends of the second mandrel 16 and the punch body 17 penetrate the interior of the bottom end of the punch fixing ring 18 respectively;

[0024] Specifically, Figure 1-Figure 4 As shown, by setting the second mandrel 16, the punch body 17 and the punch fixing ring 18 inside the upper die base 6, cooperating with the chamfering punch 13, the second pressure block 12, the first mandrel 11, the first pressure block 10 and the ejector rod 9 inside the top of the lower die base 2, after the pinion workpiece is placed in the middle position of the top of the upper die 15, the ejector 5 drives the second mandrel 16 and the punch body 17 downward to extrude the workpiece, so that the pinion can be directly extruded into a chamfered shape during the cold pressing process, thereby omitting the step of chamfering again at a later time.

[0025] Embodiment 2: A guide rod 3 is vertically fixed inside the left side of the top end of the base 1, and a fixed sleeve 4 is installed and fixed on the left side of the bottom end of the top seat 5, and the top end of the guide rod 3 passes through the inside of the fixed sleeve 4;

[0026] Specifically, Figure 1 As shown, a guide rod 3 is vertically installed between the base 1 and the top seat 5. When the top seat 5 moves down for extrusion processing, the fixed sleeve 4 can slide up and down in a directional manner on the outside of the guide rod 3 to accurately guide and position the pinion during the extrusion process.

[0027] Embodiment 3: The bottom end of the top seat 5 and the top end of the base 1 are respectively provided with mounting grooves 19, the inside of the top sides of the top seat 5 and the inside of the bottom sides of the base 1 are respectively provided with reserved openings 20, and the reserved openings 20 respectively penetrate the inside of the base 1 and the top seat 5, and the inside of the reserved openings 20 is provided with hexagon socket bolts 21, the inside of the top sides of the upper die seat 6 and the inside of the bottom sides of the lower die seat 2 are respectively provided with threaded holes 22, and the hexagon socket bolts 21 penetrate the inside of the reserved openings 20;

[0028] Specifically, Figure 1 and Figure 4 As shown, the hexagon socket bolts 21 provided in the reserved openings 20 on both sides of the bottom end of the base 1 and on both sides of the top end of the top base 5 can be screwed out from the threaded holes 22 inside the lower die base 2 and the upper die base 6 respectively, and then the internal components of the extrusion die can be quickly disassembled and replaced, and the assembled structure is set up.

[0029] Working principle: When the utility model is in use, the second mandrel 16, the punch body 17 and the punch fixing ring 18 arranged inside the upper die seat 6 cooperate with the chamfering punch 13, the second pressure block 12, the first mandrel 11, the first pressure block 10 and the ejector rod 9 inside the top of the lower die seat 2. After the pinion workpiece is placed in the middle position of the top of the upper die 15, the ejector seat 5 drives the second mandrel 16 and the punch body 17 downward to extrude the workpiece, so that the pinion can be directly extruded into a chamfered shape during cold pressing, omitting the step of chamfering again in the later stage. At the same time, the mold is used When the extrusion die is in use, the hexagon socket bolts 21 can be respectively screwed out from the threaded holes 22 inside the lower die seat 2 and the upper die seat 6 in the reserved openings 20 on both sides of the bottom end of the base 1 and on both sides of the top end of the top seat 5, and the internal components of the extrusion die can be quickly disassembled and replaced, and the assembled structure is set.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pinion chamfering extrusion die, comprising a base (1) and a lower die base (2), characterized in that: A lower die seat (2) is arranged at the top of the base (1), and a top seat (5) is arranged at the top of the lower die seat (2), an upper die seat (6) is arranged at the bottom of the top seat (5), a bottom plate (8) is fixedly mounted at the top of the lower die seat (2), an upper die (15) is arranged inside the top of the lower die seat (2), and a gear die (14) is arranged at the bottom of the upper die (15), a second pressure block (12) is arranged at the bottom of the gear die (14), and a first pressure block (12) is arranged at the bottom of the second pressure block (12). 0), a chamfering punch (13) is provided inside the gear die (14), and a first core shaft (11) is provided inside the chamfering punch (13), a ejector rod (9) is provided inside the first core shaft (11), a top plate (7) is fixedly mounted on the bottom end of the upper die seat (6), a punch fixing ring (18) is provided inside the bottom end of the upper die seat (6), a punch body (17) is vertically fixed inside the punch fixing ring (18), and a second core shaft (16) is provided inside the punch body (17).

2. A pinion chamfering extrusion die according to claim 1, characterized in that: The top end of the upper die (15) passes through the interior of the bottom plate (8), the bottom end of the ejector rod (9) passes through the interior of the chamfering punch (13), the gear die (14) and the first pressure block (10), the bottom end of the punch fixing ring (18) passes through the interior of the top plate (7), and the bottom ends of the second core shaft (16) and the punch body (17) respectively pass through the interior of the bottom end of the punch fixing ring (18).

3. A pinion chamfering extrusion die according to claim 1, characterized in that: A guide rod (3) is vertically fixed inside the left side of the top end of the base (1), and a fixed sliding sleeve (4) is installed and fixed on the left side of the bottom end of the top seat (5).

4. A pinion chamfering extrusion die according to claim 3, characterized in that: The top end of the guide rod (3) passes through the interior of the fixed sliding sleeve (4).

5. The pinion chamfering extrusion die according to claim 1, characterized in that: The bottom end of the top seat (5) and the top end of the base (1) are respectively provided with mounting grooves (19); the interior of the top end of the top seat (5) and the interior of the bottom end of the base (1) are respectively provided with reserved openings (20); and the reserved openings (20) respectively penetrate the interior of the base (1) and the top seat (5); the interior of the reserved openings (20) is provided with hexagon socket bolts (21); the interior of the top end of the upper die seat (6) and the interior of the bottom end of the lower die seat (2) are respectively provided with threaded holes (22).

6. A pinion chamfering extrusion die according to claim 5, characterized in that: The hexagon socket bolt (21) passes through the interior of the reserved opening (20).

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