Clamp for forging step shaft forge piece

Abstract

The utility model relates to a clamp for forging a step shaft forge piece, which comprises two clamp forceps (1), the middle parts of the two clamp forceps (1) are hinged and connected to form a scissor type structure, each clamp forceps (1) is divided into a clamp head (7) and a clamp arm (8) by taking a hinge point as a node, and the clamp heads (7) of the two clamp forceps (1) are folded to form a clamping area; the clamp is characterized in that an adjusting rod (2) extending to a clamping area is mounted on one clamp (1), and the extending distance of the adjusting rod (2) in the clamping area is controlled by the adjusting rod (2) through a telescopic mechanism. The clamp for forging the step shaft forge piece is simple in overall structure, and step shaft clamping operation is convenient and efficient.

Description

Technical Field

[0001] The utility model relates to a clamp for forging a stepped shaft forging, belonging to the technical field of forging production tooling. Background Art

[0002] Forging is a processing method that uses a forging machine to apply pressure to a metal blank to cause it to undergo plastic deformation to obtain a forging with certain mechanical properties, shape, and size. When forging shaft forgings, it is necessary to use a fixture to clamp the end of the shaft and perform multiple forgings on the forging press. Figure 1 ), when forging the shaft body, it is necessary to use a clamp to clamp the shaft end, and constantly adjust the forging position to rotate the shaft body and forge it multiple times. When clamping the end of the step shaft, the existing clamp needs to repeatedly adjust the clamping position for forging. When changing the clamping position, it is easy to slip and clamp the shaft body, and the clamping operation can only be re-clamped, which affects the forging rhythm. At the same time, the operation is inconvenient, time-consuming and labor-intensive, which affects the forging production efficiency. Therefore, there is an urgent need for a clamp for forging step shaft forgings with a simple structure, convenient clamping operation and high efficiency. Summary of the invention

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a clamp for forging stepped shaft forgings which has a simple structure, convenient clamping operation and high efficiency.

[0004] The purpose of the utility model is achieved in this way:

[0005] A clamp for forging a stepped shaft forging comprises two clamps which are hingedly connected in the middle to form a scissor-like structure. The clamps are divided into a clamp head and a clamp arm with the hinge point as a node. The clamp heads of the two clamps are closed to form a clamping area. An adjusting rod extending toward the clamping area is installed on one of the clamps. The extending distance of the adjusting rod in the clamping area is controlled by a telescopic mechanism.

[0006] Furthermore, a baffle is installed at the end of the adjusting rod to abut against the end surface of the step shaft.

[0007] Furthermore, the chuck is a Y-shaped structure, which contacts the cylindrical side of the stepped shaft at two points.

[0008] Furthermore, the telescopic mechanism includes a sleeve fixed on the clamp chuck, a threaded through hole arranged on the sleeve wall, and a locking bolt screwed into the threaded through hole; the adjusting rod is slidably embedded in the sleeve and is pressed against the locking position by the locking bolt.

[0009] Furthermore, the telescopic mechanism includes a sleeve fixed on the clamp chuck, and a front nut and a rear nut screwed onto the external thread of the adjusting rod; the adjusting rod is slidably embedded in the sleeve, and the front nut and the rear nut are respectively located at the front and rear ends of the sleeve.

[0010] Furthermore, the angle between the axis of the adjusting rod and the symmetry center lines of the two clamps is no greater than 15°.

[0011] Furthermore, an auxiliary arm perpendicular to the clamping arm is installed on the clamping arm.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model relies on installing an adjusting rod with adjustable extension length on the clamp to press against the end face of the step shaft, so that the four clamping points of the clamp will not move toward the axial direction of the step shaft, thereby ensuring the stability of the clamping position. The utility model has a simple structure, simplifies the clamping operation, avoids the need for repeated clamping to affect the forging rhythm, and improves the forging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the existing fixture clamping the stepped shaft.

[0015] Figure 2 The utility model is a structural schematic diagram of a clamp for forging a stepped shaft forging.

[0016] Figure 3 The utility model is a schematic diagram of the telescopic mechanism structure of a clamp for forging a stepped shaft forging.

[0017] Figure 4 The utility model is a schematic diagram of the telescopic mechanism structure of a clamp for forging a stepped shaft forging.

[0018] Figure 5 The utility model is a side view of a chuck of a clamp for forging a stepped shaft forging.

[0019] in:

[0020] Clamp 1, adjusting rod 2, sleeve 3, locking bolt 4, front nut 5, rear nut 6, chuck 7, clamp arm 8, auxiliary arm 9, baffle 10. DETAILED DESCRIPTION Example 1

[0021] See also Figure 2 , Figure 3 and Figure 5The utility model relates to a clamp for forging a step shaft forging, comprising two clamps 1 which are hingedly connected in the middle and are in a scissor-like structure. The clamps 1 are divided into a clamp head 7 and a clamp arm 8 with a hinge point as a node. The clamp heads 7 of the two clamps 1 are closed to form a clamping area; the clamp head 7 is a Y-shaped structure, which contacts the cylindrical side of the step shaft at two points. The two clamps 1 include four contact clamping points, which wrap the cylindrical side of the step shaft to form a clamping effect; an auxiliary arm 9 perpendicular to the clamp arm 8 is installed on the clamp arm 8, which is convenient for two people to cooperate in the clamping operation when the step shaft is heavy;

[0022] An adjusting rod 2 extending toward the clamping area is installed on one of the clamps 1, and the angle between the axis of the adjusting rod 2 and the symmetric center line of the two clamps 1 is not greater than 15°. A baffle 10 is installed at the end of the adjusting rod 2 to abut against the end face of the step shaft. The adjusting rod 2 is used to abut against the end face of the step shaft, thereby preventing the clamping contact point of the chuck 7 from sliding onto the shaft body of the step shaft when the clamping position is changed, thereby affecting the forging rhythm;

[0023] Furthermore, in order to adapt to the step shafts with different step lengths, the adjusting rod 2 can control the extension distance of the adjusting rod 2 in the clamping area through a telescopic mechanism; the telescopic mechanism includes a sleeve 3 fixed on the clamp head 7 of the clamp 1, a threaded through hole set on the wall of the sleeve 3, and a locking bolt 4 screwed into the threaded through hole; the adjusting rod 2 is slidably embedded in the sleeve 3 and is held in the locking position by the locking bolt 4. The adjusting rod 2 can be easily telescopically slid by loosening the locking bolt 4. After adjusting the extension distance according to the step length of the step shaft, the locking bolt 4 can be locked, which is easy to operate. Example 2

[0024] On the basis of Example 1, the structure of the telescopic mechanism is changed, see Figure 4 The telescopic mechanism comprises a sleeve 3 fixed on the clamp 7 of the clamp 1, a front nut 5 and a rear nut 6 screwed on the external thread of the adjusting rod 2; the adjusting rod 2 is slidably embedded in the sleeve 3, and the front nut 5 and the rear nut 6 are respectively located at the front and rear ends of the sleeve 3. It is only necessary to loosen the front nut 5 and the rear nut 6 at the same time, adjust the extension length, and then tighten the front nut 5 and the rear nut 6 on the front and rear ends of the sleeve 3 to complete the adjustment and lock.

[0025] The utility model has a simple structure and relies on an adjusting rod 2 with an adjustable extension length to press against the end face of the step shaft, so that the four clamping points of the clamp 1 will not move toward the axial direction of the step shaft, thereby ensuring the stability of the clamping position, simplifying the clamping operation, avoiding the need for repeated clamping, thereby affecting the forging rhythm, and improving the forging efficiency.

[0026] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A clamp for forging a stepped shaft forging, comprising two clamps (1) which are hingedly connected in the middle to form a scissor-like structure, wherein the clamp (1) is divided into a clamp head (7) and a clamp arm (8) with a hinge point as a node, and the clamp heads (7) of the two clamps (1) are closed to form a clamping area, characterized in that: An adjusting rod (2) extending toward the clamping area is mounted on one of the clamps (1), and the extending distance of the adjusting rod (2) in the clamping area is controlled by a telescopic mechanism.

2. The forging fixture for stepped shaft forgings according to claim 1, characterized in that: A baffle (10) is mounted on the end of the adjusting rod (2) and abuts against the end surface of the step shaft.

3. The forging fixture for stepped shaft forgings according to claim 1, characterized in that: The chuck (7) is a Y-shaped structure and contacts the cylindrical side surface of the step shaft at two points.

4. The forging fixture for stepped shaft forgings according to claim 1, characterized in that: The telescopic mechanism comprises a sleeve (3) fixedly mounted on a clamp (7) of the clamp (1), a threaded through hole provided on the wall of the sleeve (3), and a locking bolt (4) screwed into the threaded through hole; the adjusting rod (2) is slidably embedded in the sleeve (3) and is held in a locked position by the locking bolt (4).

5. The forging fixture for stepped shaft forgings according to claim 1, characterized in that: The telescopic mechanism comprises a sleeve (3) fixed on a chuck (7) of a clamp (1), and a front nut (5) and a rear nut (6) screwed onto an external thread of an adjusting rod (2); the adjusting rod (2) is slidably embedded in the sleeve (3), and the front nut (5) and the rear nut (6) are respectively located at the front and rear ends of the sleeve (3).

6. The forging fixture for stepped shaft forgings according to claim 1, characterized in that: The angle between the axis of the adjusting rod (2) and the symmetry center lines of the two clamps (1) is no greater than 15°.

7. The forging fixture for stepped shaft forgings according to claim 1, characterized in that: An auxiliary arm (9) perpendicular to the clamping arm (8) is mounted on the clamping arm (8).

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