A forging die positioning device for use on a press

Abstract

This utility model belongs to the field of forging die tooling for forging, and relates to a forging die positioning device used on a press. The positioning device includes a key and a keyway; wherein the keyway consists of upper and lower half-grooves, the key is inserted into the keyway, the key's cross-section consists of a rectangle and a semicircle, and a guide section is provided at the upper end of the key's side wall, the guide section being configured as an inclined surface and a semi-conical surface following the key's shape. This forging die positioning device can utilize the inclined surface and conical surface of the key's side for guidance, achieving rapid die alignment, saving die installation time, and improving the installation efficiency of large forging dies.

Description

Technical Field

[0001] This utility model belongs to the field of forging die tooling for forging, and relates to a forging die positioning device. Background Technology

[0002] With the development of forging technology, forgings are becoming increasingly integrated and larger, and forging equipment is developing rapidly. As a result, forging dies are becoming larger, and the time required for their installation and positioning is increasing. In daily production, the heated forging die is removed from the die preheating furnace, and four flat keys are placed sequentially in the keyway of the press worktable. The die is then hoisted onto the press worktable. Four workers stand on the four sides of the worktable, and the hoisting personnel move the die according to the instructions of the workers on the sides of the worktable, slowly lowering it. When the four flat keys placed in the keyway of the worktable are aligned with the keyway of the die, the die is lowered, completing the die installation.

[0003] To ensure precise positioning of the forging die, the gap between the keyway and the key working surface is very small. Therefore, during the die installation process, workers need to spend a lot of time aligning the keyway and the flat key, which results in slow work efficiency. At the same time, heat loss and temperature drop during die installation have a significant impact on the microstructure and properties of titanium alloys and high-temperature alloys, reducing the quality of the forgings. Utility Model Content

[0004] The purpose of this invention is to solve the problem of difficult alignment during the installation of large forging dies. While ensuring high accuracy in the installation and positioning of large forging dies, it saves time in the alignment process, improves the installation efficiency of large forging dies, reduces heat loss during the installation process, increases the forging temperature of the forging die, and further improves the quality of forgings.

[0005] Technical solution: A forging die positioning device is provided, comprising: a key and a keyway; The keyway consists of two half-grooves, an upper and a lower one. The key is inserted into the keyway. The cross-section of the key consists of a rectangle and a semicircle. A guide section is provided at the upper end of the side wall of the key. The guide section is set as an inclined surface and a semi-conical surface according to the shape of the key.

[0006] Furthermore, when the keyway is located between the upper mold and the upper fixture, the upper half of the keyway is located on the upper fixture, the lower half of the keyway is opened on the bottom surface of the upper mold, and the guide section is located in the upper half of the keyway of the upper fixture.

[0007] Furthermore, the keyway is located between the lower mold and the lower tooling, the bottom surface of the lower mold has an upper half-groove, the lower half-groove is located in the lower tooling, and the guide section is located in the upper half-groove of the lower mold.

[0008] Furthermore, both the upper and lower surfaces of the key are flat, and there is a threaded hole in the middle of the upper surface, which can be used to move the key using lifting bolts.

[0009] Furthermore, the angle between the guide section and the sidewall is 15–20°.

[0010] Furthermore, the height of the guide section is 0.2 to 0.3 times the overall height of the key.

[0011] Beneficial effects: Using the key of this invention for mold installation and positioning allows for guidance via the inclined and conical surfaces of the key side, enabling rapid mold alignment, saving installation time, and improving the installation efficiency of large forging molds. It also avoids key or keyway damage during installation, preventing inaccurate mold positioning and improving the dimensional accuracy of forgings. While ensuring high accuracy in the installation and positioning of large forging molds, it also reduces heat loss during installation, increases the forging temperature of the forging mold, and further improves the quality of forgings. Attached Figure Description

[0012] Figure 1 This is a front view of the key of this utility model; Figure 2 This is a top view of the key of this utility model; Figure 3 This is a schematic diagram of the installation of the keyway located between the upper mold and the upper tooling.

[0013] Figure 4 This is a schematic diagram of the installation of the keyway located between the lower mold and the lower tooling. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] This utility model provides a positioning device for quick alignment and installation of molds, such as... Figure 1-2 As shown, it includes: The positioning device includes key 3 and keyway.

[0016] The key consists of a rectangular block and a half-cylinder of the same thickness, with the cylinder having the same diameter as the rectangle. Both the top and bottom surfaces of the key are flat, with a threaded hole 31 in the center of the top surface for movement using lifting bolts. The side surface of the key consists of an inclined surface and a conical surface in the upper region, and a flat surface and a cylindrical surface perpendicular to the bottom surface in the lower region. The flat surfaces G1 and G2 perpendicular to the bottom surface in the lower region of the key's side surface are the working surfaces of the key. The inclined surfaces M1, M2, and M3 in the upper region of the key's side surface are the guide surfaces of the key, and the working surfaces and guide surfaces are connected by a 10mm diameter arc surface.

[0017] The mold and the tooling connected to the mold have keyways at corresponding positions. The width of the keyway is clearance-fitted with the width of the key, and the width of the keyway remains constant along the height direction.

[0018] like Figure 3 As shown, when the keyway is located between the upper mold 2 and the upper fixture 1, the upper half-groove is located in the upper fixture 1, the lower half-groove is opened on the bottom surface of the upper mold 2, and the guide section is located in the upper half-groove of the upper fixture 1.

[0019] like Figure 4 As shown, when the keyway is located between the lower mold 2' and the lower tooling 1', the bottom surface of the lower mold 2' has an upper half-groove, the lower half-groove is located in the lower tooling 1', and the guide section is located in the upper half-groove of the lower mold 2'.

[0020] Furthermore, the inclined and conical surfaces on the key side form acute angles with the vertical plane of the bottom surface, with an included angle of 15 to 20°.

[0021] Furthermore, the height H1 of the first inclined surface M1 and the second inclined surface M2 on the side of the bond is 0.2 to 0.3 times the overall height of the bond.

[0022] Furthermore, the height of the first plane G1 and the second plane G2 of the key is 0.7 to 0.8 times the overall height of the key, and the working surface of the key is connected to the bottom surface by a 45° bevel.

[0023] The upper and lower tooling can be upper and lower mold bases or upper and lower worktables.

[0024] Furthermore, the threaded hole on the key surface has a diameter of 12mm and a thread depth of 25mm.

[0025] Furthermore, the keyway height on the mold is 0.52 to 0.55 times the key block height, and the bottom and sidewalls of the keyway are rounded.

[0026] Furthermore, the keyway height on the tooling connected to the mold is 0.52 to 0.55 times the key block height, and the bottom and sidewalls of the keyway are rounded.

[0027] Example This utility model provides an installation and positioning device for a large mold, including a key and a keyway.

[0028] The key is 85mm high and 120mm wide. Figure 1 and Figure 2 As shown, planes G1 and G2 are mold mounting and positioning surfaces with a height of 57mm. Mounting and positioning surfaces G1 and G2, along with cylindrical surface G3, are connected to the bottom surface of the key by a 45° transition slope with a height of 5mm. Sloping surfaces M1 and M2, and conical surface M3, serve as guide surfaces during mold mounting with a height H1 of 22mm, forming a 20° angle with the working surface. The working surface of the key is connected to the guide surface by a 10mm diameter arc surface. Process hole 31 is located at the center of the key's upper surface; it is a 12mm diameter threaded hole with a depth of 25mm.

[0029] The mold and the tooling connected to the mold have keyways at corresponding positions. The width of the keyway is clearance-fitted with the width of the key, with a clearance of 0.3 to 0.5 mm. The height of the keyway is 45 mm. The side wall of the keyway is connected to the bottom surface with a 10 mm diameter arc surface.

[0030] A large forging die has dimensions of 4400×2500×450mm and weighs approximately 36 tons. The die is preheated to 250–350℃. During installation, the key of this invention is used for positioning. The inclined surfaces M1 and M2 and the conical surface M3 on the key's side are used for guidance. The planes G1 and G2 on the key's side are positioned with the keyway sides of the die and tooling, enabling rapid die alignment, saving installation time, and improving the installation efficiency of large forging dies. Simultaneously, it avoids key or keyway damage during installation, which could lead to inaccurate die positioning and improve the dimensional accuracy of forgings. While ensuring high accuracy in the positioning of the large forging die, it also reduces heat loss during installation, increases the forging temperature of the forging die, and further improves the quality of the forgings.

Claims

1. A forging die positioning device, characterized in that, include: Keys and keyways; The keyway consists of two half-grooves, an upper and a lower one. The key is inserted into the keyway. The cross-section of the key consists of a rectangle and a semicircle. A guide section is provided at the upper end of the side wall of the key. The guide section is set as an inclined surface and a semi-conical surface according to the shape of the key.

2. The apparatus according to claim 1, characterized in that, When the keyway is located between the upper mold and the upper fixture, the upper half of the keyway is located on the upper fixture, the lower half of the keyway is opened on the bottom surface of the upper mold, and the guide section is located in the upper half of the keyway of the upper fixture.

3. The apparatus according to claim 1, characterized in that, When the keyway is located between the lower mold and the lower fixture, the bottom surface of the lower mold has an upper half-groove, the lower half-groove is located in the lower fixture, and the guide section is located in the upper half-groove of the lower mold.

4. The apparatus according to claim 1, characterized in that, The key has flat surfaces on both the top and bottom, and a threaded hole in the middle of the top surface, which can be used to move the key using lifting bolts.

5. The apparatus according to claim 1, characterized in that, The angle between the guide section and the sidewall is 15-20°.

6. The apparatus according to claim 1, characterized in that, The height of the guide section is 0.2 to 0.3 times the overall height of the key.

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