Hot forging die for gear shaft blank

Abstract

The utility model discloses a hot forging die for a gear shaft blank, and relates to the technical field of hot forging dies. The gear shaft blank hot forging die comprises a bottom plate, a driving mechanism and a limiting mechanism, a supporting plate is fixedly installed on the bottom plate through bolts, a lower die is fixedly installed on the top of the bottom plate, an upper die is arranged over the lower die, the limiting mechanism is arranged on the lower die and the upper die, and the limiting mechanism comprises a connecting rod and a U-shaped clamping plate. Three groups of connecting rods are fixedly mounted on the outer surface of the upper mold and are annularly arranged, and a group of U-shaped clamping plates is fixedly mounted at one end of each of the three groups of connecting rods. According to the hot forging die for the gear shaft blank, through cooperative use of the limiting mechanism, the lower die and the upper die can be assisted to be limited in the horizontal direction when a formed blank is combined, it is guaranteed that the lower die and the upper die can be aligned, transverse position deviation is avoided, and the forming stability of the die is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot forging dies, in particular to a hot forging die for a gear shaft blank. Background Art

[0002] The application document with publication number CN216801548U discloses a hot forging die for processing a driving gear shaft blank, including an upper die and a lower die. The upper die inner cavity of the upper die is a truncated cone with a small top and a large bottom, which corresponds to the gear tooth area of ​​the driving gear shaft. The lower die inner cavity of the lower die is a truncated cone with a large top and a small bottom, which corresponds to the stepped shaft area of ​​the driving gear shaft. The upper die cavity and the lower die cavity are truncated cone-shaped, and the corresponding area of ​​the gear tooth area and the corresponding area of ​​the stepped shaft area of ​​the hot forging blank can be directly hot forged into a conical blank, with a small cutting amount, and a smaller hot forging raw material can be used, saving raw materials.

[0003] However, during the long-term use of the above-mentioned mold, due to the deformation of the blank during the combined extrusion of the upper and lower molds, lateral force will be generated. Since the mold is not limited, lateral offset is easy to occur between the upper and lower molds, resulting in deviations in the size of the formed ingredients. For this reason, we propose a hot forging mold for gear shaft blanks. Utility Model Content

[0004] The utility model aims to provide a gear shaft blank hot forging die, which can solve the problem that the position between the upper and lower dies in some existing dies is prone to size deviation.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a gear shaft blank hot forging die, comprising:

[0006] A bottom plate is fixedly mounted with a support plate by bolts, a lower mold is fixedly mounted on the top of the bottom plate, and an upper mold is arranged just above the lower mold;

[0007] A driving mechanism is disposed on the support plate, and is used to drive the upper mold and the lower mold to close the mold to form the blank;

[0008] The limiting mechanism is arranged on the lower mold and the upper mold. The limiting mechanism includes connecting rods and U-shaped clamps. Three groups of connecting rods are fixedly installed on the outer surface of the upper mold and arranged in a ring shape. One end of the three groups of connecting rods is fixedly installed with a group of U-shaped clamps.

[0009] Preferably, the limiting mechanism also includes limiting wheels and limiting grooves. A group of limiting wheels are rotatably installed between the inner walls of the three groups of U-shaped clamps. The outer surface of the lower mold is provided with limiting grooves whose number corresponds to the limiting wheels. The outer surfaces of the three groups of limiting wheels are all in contact with the inner walls of the corresponding limiting grooves.

[0010] Preferably, the driving mechanism includes a hydraulic rod, a hanging plate and a hanging rod. The hydraulic rod is fixedly installed on the top of the support plate. The free end of the hydraulic rod passes through the support plate and extends to just above the upper mold and is fixedly installed with a hanging plate. At least two groups of hanging rods are fixedly installed between the bottom of the hanging plate and the top of the upper mold.

[0011] Preferably, a mold groove A is provided at the bottom of the upper mold, and a mold groove B is provided at the top of the lower mold, so as to achieve the effect of forming the hot forging blank.

[0012] Preferably, a collecting box is fixedly installed on the top of the base plate, a blower is fixedly installed on the rear outer surface of the collecting box, an air outlet plate is fixedly installed on the top of the collecting box, and two groups of connecting pipes are arranged on the top of the blower, one end of the two groups of connecting pipes are communicated with the interior of the air outlet plate, and the other ends of the two groups of connecting pipes are fixedly connected to the output end of the blower.

[0013] Preferably, at least two groups of limiting rods are fixedly installed on the bottom of the upper mold, and the top of the lower mold is provided with limiting holes corresponding to the number of limiting rods, so as to further assist the upper and lower molds to align and fit.

[0014] Preferably, at least two groups of bolt holes are provided on the bottom plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The gear shaft blank hot forging die can assist the lower die and the upper die to limit the position in the horizontal direction when the lower die and the upper die are combined to form the blank through a limiting mechanism, so as to ensure that the two can be aligned and avoid lateral position deviation. This solves the problem that in the long-term use of some existing dies, due to the deformation of the blank during the merging and extrusion of the upper and lower dies, lateral force is generated. Since the die is not limited, lateral offset is easily generated between the upper and lower dies, resulting in deviation in the size of the formed ingredients. This improves the stability of the die forming.

[0017] (2) The hot forging die for the gear shaft blank can collect the formed blanks through a collection box. At the same time, since the temperature of the hot forged blanks is relatively high, the collected blanks can be air-cooled under the action of the blower, the air outlet plate and the connecting pipe so that they can be used for subsequent processing as soon as possible, thereby ensuring the use effect of the die and being conducive to the promotion and use of the die. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a front perspective view of the utility model;

[0020] Figure 2 It is a rear perspective view of the utility model;

[0021] Figure 3 It is a partial bottom-up stereogram of the utility model;

[0022] Figure 4 It is a front perspective view of the lower mold of the utility model.

[0023] Figure numerals: 1. Base plate; 2. Support plate; 3. Lower mold; 4. Upper mold; 5. Limiting mechanism; 51. Connecting rod; 52. U-shaped clamp; 53. Limiting wheel; 54. Limiting slot; 6. Driving mechanism; 61. Hydraulic rod; 62. Hanging plate; 63. Hanging rod; 7. A mold slot; 8. B mold slot; 9. Collecting box; 10. Blower; 11. Air outlet plate; 12. Connecting pipe; 13. Bolt hole; 14. Limiting rod; 15. Limiting hole. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] See also Figure 1-4 The utility model provides a technical solution: a hot forging die for a gear shaft blank, comprising a bottom plate 1, a driving mechanism 6 and a limiting mechanism 5. The bottom plate 1 is fixedly installed with a support plate 2 by bolts, a lower die 3 is fixedly installed on the top of the bottom plate 1, an upper die 4 is arranged just above the lower die 3, a driving mechanism 6 is arranged on the supporting plate 2, and the driving mechanism 6 is used to drive the upper die 4 to close the die with the lower die 3 to form the blank, an A die groove 7 is provided at the bottom of the upper die 4, a B die groove 8 is provided at the top of the lower die 3, and a collecting mechanism 5 is fixedly installed on the top of the bottom plate 1. Box 9, a blower 10 is fixedly installed on the outer surface of the rear side of the collection box 9, an air outlet plate 11 is fixedly installed on the top of the collection box 9, two groups of connecting pipes 12 are arranged on the top of the blower 10, one end of the two groups of connecting pipes 12 are communicated with the inside of the air outlet plate 11, and the other ends of the two groups of connecting pipes 12 are fixedly connected to the output end of the blower 10, at least two groups of limiting rods 14 are fixedly installed on the bottom of the upper mold 4, and the top of the lower mold 3 is provided with limiting holes 15 corresponding to the number of limiting rods 14, and at least two groups of bolt holes 13 are provided on the bottom plate 1;

[0026] The limiting mechanism 5 is arranged on the lower mold 3 and the upper mold 4, and the limiting mechanism 5 includes connecting rods 51 and U-shaped clamps 52. Three groups of connecting rods 51 are fixedly installed on the outer surface of the upper mold 4 and arranged in a ring shape. One end of the three groups of connecting rods 51 is fixedly installed with a group of U-shaped clamps 52.

[0027] The limiting mechanism 5 also includes a limiting wheel 53 and a limiting groove 54. A group of limiting wheels 53 are rotatably installed between the inner walls of the three groups of U-shaped clamps 52. The outer surface of the lower mold 3 is provided with limiting grooves 54 corresponding to the number of limiting wheels 53. The outer surfaces of the three groups of limiting wheels 53 are all in contact with the inner walls of the corresponding limiting grooves 54. Through the limiting mechanism 5, the lower mold 3 and the upper mold 4 can be assisted to limit in the horizontal direction when merging the forming blank, ensuring that the two can be aligned, avoiding lateral position deviation, and improving the stability of mold forming.

[0028] The driving mechanism 6 includes a hydraulic rod 61, a hanging plate 62 and a hanging rod 63. The hydraulic rod 61 is fixedly installed on the top of the support plate 2. The free end of the hydraulic rod 61 passes through the support plate 2 and extends to the top of the upper mold 4 and is fixedly installed with a hanging plate 62. At least two groups of hanging rods 63 are fixedly installed between the bottom of the hanging plate 62 and the top of the upper mold 4. The formed blanks can be collected through the collecting box 9. At the same time, due to the high temperature of the hot forged blanks, the collected blanks can be air-cooled under the action of the blower 10, the air outlet plate 11 and the connecting pipe 12 so that they can be used for subsequent processing as soon as possible, thereby ensuring the use effect of the mold and being conducive to the promotion and use of the mold.

[0029] Working principle: Place the hot forging blank in the B mold groove 8 on the lower mold 3, control the free end of the hydraulic rod 61 on the support plate 2 to extend, and drive the upper mold 4 to move down close to the lower mold 3 through the connection between the hanging plate 62 and the hanging rod 63. Each limiting wheel 53 will fit the corresponding limiting groove 54 and roll in the limiting groove 54, and each limiting mechanism 5 will be inserted into the corresponding driving mechanism 6, prompting the upper mold 4 to align with the lower mold 3 and fit each other. The hot forging blank in the lower mold 3 is also extruded and formed in the A mold groove 7 and the B mold groove 8. After completion, take out the blank and place it in the collection box 9, control the blower 10 to start blowing air from the air outlet plate 11 through the connecting pipe 12 to cool the blank in the collection box 9.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A hot forging die for a gear shaft blank, characterized in that: include: A bottom plate (1) is fixedly mounted with a support plate (2) by means of bolts, a lower mold (3) is fixedly mounted on the top of the bottom plate (1), and an upper mold (4) is arranged directly above the lower mold (3); A driving mechanism (6) is arranged on the support plate (2), and the driving mechanism (6) is used to drive the upper mold (4) and the lower mold (3) to close the mold to form the blank; A limiting mechanism (5) is arranged on the lower mold (3) and the upper mold (4), and comprises connecting rods (51) and U-shaped clamping plates (52). Three groups of connecting rods (51) are fixedly mounted on the outer surface of the upper mold (4) and arranged in a ring shape, and one end of each of the three groups of connecting rods (51) is fixedly mounted with a group of U-shaped clamping plates (52).

2. The hot forging die for a gear shaft blank according to claim 1, characterized in that: The limiting mechanism (5) further comprises limiting wheels (53) and limiting grooves (54); a group of limiting wheels (53) is rotatably mounted between the inner walls of the three groups of U-shaped clamping plates (52); the outer surface of the lower mold (3) is provided with limiting grooves (54) whose number corresponds to the number of limiting wheels (53); the outer surfaces of the three groups of limiting wheels (53) are all in contact with the inner walls of the corresponding limiting grooves (54).

3. The hot forging die for a gear shaft blank according to claim 2, characterized in that: The driving mechanism (6) comprises a hydraulic rod (61), a hanging plate (62) and a hanging rod (63); the hydraulic rod (61) is fixedly mounted on the top of the support plate (2); the free end of the hydraulic rod (61) passes through the support plate (2) and extends to the top of the upper mold (4) and is fixedly mounted with the hanging plate (62); at least two groups of hanging rods (63) are fixedly mounted between the bottom of the hanging plate (62) and the top of the upper mold (4).

4. The hot forging die for a gear shaft blank according to claim 3, characterized in that: A mold groove (7) is provided at the bottom of the upper mold (4), and a mold groove (8) is provided at the top of the lower mold (3).

5. The hot forging die for a gear shaft blank according to claim 4, characterized in that: A collecting box (9) is fixedly mounted on the top of the base plate (1), a blower (10) is fixedly mounted on the rear outer surface of the collecting box (9), an air outlet plate (11) is fixedly mounted on the top of the collecting box (9), two groups of connecting pipes (12) are arranged on the top of the blower (10), one end of the two groups of connecting pipes (12) are communicated with the interior of the air outlet plate (11), and the other ends of the two groups of connecting pipes (12) are fixedly connected to the output end of the blower (10).

6. The hot forging die for a gear shaft blank according to claim 5, characterized in that: At least two groups of limiting rods (14) are fixedly mounted on the bottom of the upper mold (4), and the top of the lower mold (3) is provided with limiting holes (15) whose number corresponds to the limiting rods (14).

7. The hot forging die for a gear shaft blank according to claim 6, characterized in that: At least two groups of bolt holes (13) are provided on the bottom plate (1).

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