Forge piece twisting tool

Abstract

The utility model provides a forge piece twisting tool, and relates to the field of forge piece twisting tools. The forge piece twisting tool comprises a main body arm; a first angle is formed between the working part and the main body arm, and a groove is formed in the end, away from the main body arm, of the working part; and the indicating part is rotationally arranged on the main body arm so as to display the angle between the indicating part and the main body arm when the main body arm rotates. By means of the forge piece torsion tool, whether the crank reaches the specified angle or not can be known more accurately, and compared with existing complete visual inspection, errors are effectively reduced, and angular deviation between the cranks is reduced.

Description

Technical Field

[0001] The utility model relates to the field of torsion tools for forgings, in particular to a torsion tool for forgings. Background Art

[0002] Large integral crankshaft forgings are generally composed of 2-3 cranks and crank journals. There is a certain angle difference between the cranks. Generally, the angle difference between 2 cranks is 90°, and the angle difference between 3 cranks is 120°. The forming method is free forging. After upsetting and drawing, the steel ingot is first forged into a hexagonal billet, then engraved, and a cutter is used for local shoulder pressing. Then, the upper narrow anvil and the lower wide anvil are used to press out the first crank, and then the second crank is pressed at a certain angle, and then the third crank is pressed at a certain angle. Since the flipping angle is affected by human operation and naked eye observation, a large error will occur, resulting in a large angle deviation between the cranks. A utility model tool is urgently needed to solve the problem of large errors between the cranks. Utility Model Content

[0003] In view of the above shortcomings of the prior art, the utility model provides a torsion tool for forgings to improve the technical problem that the flipping angle of the existing forgings is affected by naked eye observation, which will produce a large error and lead to a large angle deviation between the cranks.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides a forging torsion tool, including: a main arm; a working part, which forms a first angle with the main arm, and a groove is provided at one end of the working part away from the main arm; an indicating part, which is rotatably arranged on the main arm to display the angle between the indicating part and the main arm when the main arm rotates.

[0005] In an exemplary embodiment of the present application, an indicating scale line is provided on the main body arm, and when the indicating portion coincides with the indicating scale line, the indicating portion and the main body arm form an angle indicated by the indicating scale line.

[0006] In an exemplary embodiment of the present application, an extension portion is provided at one end of the main body arm away from the working portion, and the indicator scale line is provided on the extension portion.

[0007] In an exemplary embodiment of the present application, when the indicating portion enters the range of the indicating scale line, the projection of the indicating portion away from the indicating portion end along the rotating axis of the indicating portion falls on the extending portion.

[0008] In an exemplary embodiment of the present application, the extension portion is perpendicular to the main arm.

[0009] In an exemplary embodiment of the present application, at least three indicating scale lines are provided, namely a preset scale line and error scale lines provided on the left and right sides of the preset scale line.

[0010] In an exemplary embodiment of the present application, a hoisting portion is provided on the main arm, so that a hoisting device can hoist the forging torsion tool.

[0011] In an exemplary embodiment of the present application, the hanging portion includes a hanging ring, and the hanging ring is rotatably disposed on the main body arm.

[0012] In an exemplary embodiment of the present application, the rotation axis of the indicating portion coincides with the rotation axis of the hanging ring.

[0013] In an exemplary embodiment of the present application, the first angle is 150°.

[0014] The beneficial effects of the utility model are:

[0015] The flipping angle of the existing forging crank is affected by human operation and naked eye observation during production, which will produce large errors and cause large angle deviations between the cranks. In the present application, a first angle is set between the main arm and the working part, and an indicator part is rotatably set on the main arm. The indicator part remains in a vertical state under the action of gravity. The angle of the crank in the groove can be obtained according to the angle between the indicator part and the main arm and combined with the first angle. Through the forging torsion tool, it is possible to more accurately know whether the crank has reached the specified angle. Compared with the existing complete naked eye observation, it effectively reduces the error and the angle deviation between the cranks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of an exemplary forging torsion tool of the present application;

[0018] Figure 2 A front view of an exemplary forging torsion tool of the present application;

[0019] Figure 3 This is a schematic diagram of an exemplary forging of the present application;

[0020] Figure 4 This is a schematic diagram of an exemplary forging torque tool in use according to the present application.

[0021] Component number description

[0022] 100, main arm; 200, working part; 210, groove; 300, indicating part; 310, pointer; 400, indicating scale line; 410, preset scale line; 420, error scale line; 500, extension part; 600, lifting ring; 700, forging; 710, crank. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0024] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.

[0025] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.

[0026] During the processing of existing integral crankshaft forgings, the angles between the cranks are affected by human operation and visual observation, which may produce large errors and cause large deviations in the angles between the cranks.

[0027] See also Figure 1 and Figure 2In view of this, the present application provides a forging torsion tool, including a main arm 100, a working part 200 and an indicating part 300. The working part 200 is arranged on the main arm 100, and forms a first angle with the main arm 100. Preferably, the working part 200 and the main arm 100 are integrally formed, which effectively ensures the connection strength between the working part 200 and the main arm 100, and reduces the problem of fracture at the connection between the working part 200 and the main arm 100 during long-term tension and compression. The working part 200 is provided with a groove 210 at one end away from the main arm 100, and the groove 210 is used to accommodate the crank 710 to be twisted or to be corrected after twisting. The height of the groove 210 is greater than the thickness of the blank of the crank 710, and the depth of the groove 210 is equal to or slightly about the width of the crank 710, so as to facilitate the use of the groove 210 to clamp the crank 710 to drive the crank 710 to bend and deform. In order to reduce the weight while ensuring the strength of the forging torsion tool, the cross section of the working part 200 where the groove 210 is set is larger than the cross section of the working part 200 near the main arm 100, which can facilitate the setting of the groove 210 and ensure the strength of the forging torsion tool. The indicator part 300 is rotatably set on the main arm 100 to display the angle between the indicator part 300 and the main arm 100 when the main arm 100 rotates. By observing the angle between the indicator part 300 and the main arm 100, combined with the first angle, the angle between the crank 710 and the adjacent crank 710 can be obtained, thereby reducing the angle deviation of the crank 710.

[0028] See also Figure 1 In one embodiment of the present application, the indicator 300 includes a pointer 310, which is rotatably connected to the main arm 100. The pointer 310 is kept in a vertical state under the action of gravity. The pointer 310 is slender in shape, which is convenient for observation.

[0029] Further, when the crank 710 is twisted to a specified angle, the main arm 100 is horizontal. The angle difference between the cranks 710 is α, the first angle is θ, 180°-θ=α-90°, and taking three cranks 710 as an example, the angle between the cranks 710 is 120°, and the corresponding first angle θ is 150°. When twisting the crank 710, the groove 210 on the forging twisting tool is placed on the crank 710, and pressure or tension is applied to part of the main arm 100. The main arm 100 drives the working part 200 to twist, thereby twisting the crank 710. The pointer 310 remains vertical under the action of gravity. By observing the relative position between the pointer 310 and the main arm 100, it is more accurate to know whether the main arm 100 is horizontal, that is, when the pointer 310 is perpendicular to the main arm 100, the main arm 100 is in a horizontal state, and the crank 710 reaches a preset angle. Compared with the existing method of directly observing the angle between the cranks 710, it is easier to judge whether the pointer 310 is perpendicular to the main arm 100 in the present application, thereby more accurately knowing whether the crank 710 is twisted into place, thereby reducing the angle deviation between the cranks 710 and improving the processing accuracy.

[0030] See also Figure 1 and Figure 2 In one embodiment of the present application, the main arm 100 is provided with an indication scale line 400. When the indication part 300 coincides with the indication scale line 400, the indication part 300 and the main arm 100 form an angle indicated by the indication scale line 400, so that it is possible to quickly and accurately know whether the indication part 300 and the main arm 100 have reached a preset angle, thereby quickly and accurately knowing whether the crank 710 has rotated to the preset angle. The slender pointer 310 is easier to observe whether it coincides with the indication scale line 400, thereby improving the observation speed and the efficiency of the twisting process of the crank 710.

[0031] See also Figure 1 and Figure 2 In one embodiment of the present application, the indicating scale lines 400 are provided with at least three, namely, a preset scale line 410 and error scale lines 420 provided on the left and right sides of the preset scale line 410. When the indicating portion 300 coincides with the preset scale line 410, the crank 710 is twisted to a preset angle. In order to increase the processing speed, and the subsequent processing will further refine the forging 700, the angle between the cranks 710 is allowed to have an error. When the indicating portion 300 falls into the area formed by the error scale lines 420 on the left and right sides, it means that the crank 710 is twisted to an angle within the allowable error range. It is convenient for workers to check and effectively improve the processing speed.

[0032] See also Figure 1 and Figure 2In one embodiment of the present application, an extension part 500 is provided at one end of the main arm 100 away from the working part 200, and the indicating scale line 400 is provided on the extension part 500. The size of the forging 700 is relatively large, so for the sake of processing safety, workers usually have a certain distance from the forging twisting tool, and the height of the working part 200 in the vertical direction is relatively short, which makes it inconvenient for workers to identify whether the indicating part 300 is rotated to the range of the indicating scale line 400. The height of the extension part 500 in the vertical direction is greater than the height of the working part 200 in the vertical direction. By providing the indicating scale line 400 on the extension part 500, a larger indicating part 300 and a longer indicating scale line 400 can be used, so that it is convenient for workers to check the relative position between the indicating part 300 and the indicating scale line 400, thereby improving the processing speed and the processing accuracy. It should be noted that the height of the working part 200 in the vertical direction refers to the longitudinal height of the working part 200 when the working part 200 is in a horizontal state.

[0033] See also Figure 2 In one embodiment of the present application, when the indicating portion 300 falls within the range of the indicating scale line 400, the projection of the indicating portion 300 away from the end of the indicating portion 300 along the rotation axis of the indicating portion 300 falls on the extension portion 500, which is more conducive to workers viewing the relative position between the indicating portion 300 and the indicating scale line 400, thereby improving the viewing speed.

[0034] In one embodiment of the present application, the extension portion 500 is perpendicular to the main arm 100 , which facilitates the setting of the indicator scale line 400 on the extension portion 500 and also facilitates the projection of the indicator portion 300 to fall on the extension portion 500 .

[0035] See also Figure 1 and Figure 2 In one embodiment of the present application, a hoisting part is provided on the main arm 100 for the hoisting device to hoist the forging twisting tool. The force required for twisting the crank 710 is relatively large. When the angle between the cranks 710 is too large, the crank 710 is driven to twist by applying pressure to the main arm 100. When the angle between the cranks 710 is too small, it is necessary to apply a pulling force to the main arm 100 to drive the crank 710 to twist. The hoisting part is provided on the main arm 100 to facilitate the upper anvil to hoist the main arm 100 and to facilitate the application of pulling force to the main arm 100.

[0036] See also Figure 1 and Figure 2In one embodiment of the present application, the lifting portion includes a lifting ring 600, and the lifting ring 600 is rotatably arranged on the main arm 100. By using the lifting ring 600, it is convenient to lift the forging torsion tool on the anvil to apply tension. Preferably, the lifting ring 600 is U-shaped, and a connecting portion is provided at the opening of the U-shape, and the connecting portion extends toward the center of the opening, and the connecting portion is rotatably connected to the main arm 100. Exemplarily, a connecting hole is provided on the side wall of the main arm 100, and the connecting portion is inserted into the connecting hole so that the lifting ring 600 is rotatably connected to the main arm 100. In another embodiment of the present application, the lifting ring 600 is rotatably connected to the connecting hole through a pin.

[0037] See also Figure 1 and Figure 2 In one embodiment of the present application, the rotation axis of the indicating part 300 coincides with the rotation axis of the hanging ring 600, which facilitates the design of the forging torsion tool and avoids interference between the indicating part 300 and the hanging ring 600. That is, when the hanging ring 600 is in a vertical or tilted upward state due to the tension during operation, the indicating part 300 is always kept vertical by gravity, thereby avoiding interference between the indicating part 300 and the hanging ring 600 and reducing the probability of damage to the indicating part 300. Furthermore, a mounting hole is provided on the connecting part, and the indicating part 300 is rotatably mounted on the mounting hole through a pin shaft. The indicating part 300 is always on the outside of the hanging ring 600, avoiding collision and damage between the indicating part 300 and the hanging ring 600.

[0038] When the forging twisting tool is used, the groove 210 is first placed on the crank 710, and pressure is directly applied to the main arm 100, or tension is applied to the main arm 100 through the ring 600, so that the main arm 100 drives the working part 200 to twist, thereby driving the crank 710 to twist. When the main arm 100 reaches the horizontal or substantially horizontal state, that is, when the pointer 310 coincides with the preset scale line 410 or is within the error scale line 420, the crank 710 is twisted to a suitable angle.

[0039] The forging torsion tool of the utility model facilitates the twisting of the crank 710 to a suitable angle, improves processing efficiency, and has the beneficial effect of improving processing accuracy. Therefore, the utility model effectively overcomes some practical problems in the prior art and has a high utilization value and use significance. The above-mentioned embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A forging torsion tool, characterized in that: include: Main arm; The working part forms a first angle with the main body arm, and a groove is provided at one end of the working part away from the main body arm; an indicator portion rotatably disposed on the main body arm so as to display an angle between the indicator portion and the main body arm when the main body arm rotates; Wherein, the main body arm is provided with an indicating scale line, and when the indicating portion coincides with the indicating scale line, the indicating portion and the main body arm form an angle indicated by the indicating scale line.

2. The forging torsion tool according to claim 1, characterized in that: An extension portion is arranged at one end of the main body arm away from the working portion, and the indicating scale line is arranged on the extension portion.

3. The forging torsion tool according to claim 2, characterized in that: When the indicating portion falls within the range of the indicating scale line, the projection of the end of the indicating portion away from the indicating portion along the rotation axis of the indicating portion falls on the expansion portion.

4. The forging torsion tool according to claim 2, characterized in that: The extension portion is perpendicular to the main body arm.

5. The forging torsion tool according to claim 1, characterized in that: The indicating scale lines are at least three in number, which are a preset scale line and error scale lines arranged on the left and right sides of the preset scale line.

6. The forging torsion tool according to claim 1, characterized in that: The main body arm is provided with a hoisting portion for a hoisting device to hoist the forging torsion tool.

7. The forging torsion tool according to claim 6, characterized in that: The hoisting part comprises a hoisting ring, and the hoisting ring is rotatably arranged on the main body arm.

8. The forging torsion tool according to claim 7, characterized in that: The rotation axis of the indicating portion coincides with the rotation axis of the hanging ring.

9. The forging torsion tool according to claim 1, characterized in that: The first angle is 150°.

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