Roundness correction device for annular forgings

Abstract

The utility model discloses a roundness correction device of annular forgings, including oil cylinder, oil cylinder support plate, thrust block and roundness correction baffle, the oil cylinder support plate is fixedly arranged at one end of hollow frame, the oil cylinder is horizontally arranged on the oil cylinder support plate, and the end part of the piston rod of the oil cylinder is connected with the thrust block through a shaft pin. The roundness correction baffle is arranged at the other end of the hollow frame and right faces the thrust block. An opening used for taking and placing the annular forgings is formed in the side face of the hollow frame. By means of a simple mechanical pressure adjusting mode, effective correction of the outer diameter oval change of the annular forge piece is achieved, the correcting device has the advantages of being simple in structure, low in cost, wide in application range, convenient and fast to operate and the like, production efficiency and product quality are improved, and the correcting device has important practical value.

Description

Technical Field

[0001] The utility model belongs to the technical field of ring production and processing, and particularly relates to a roundness correction device for annular forgings. Background Art

[0002] In the production process of ring forgings, some ring forgings often show elliptical deformation of the outer diameter after the ring is tied due to uneven processing or material properties. This deformation affects the quality and use effect of the product.

[0003] Traditional bulging machines correct elliptical deformation by expanding the inner diameter, that is, first control the size of the cerclage to be smaller than the required size, and then push the ring to move horizontally and radially outward by sliding the inclined surface of the bulging machine to expand the inner diameter, thereby eliminating the elliptical deformation of the ring and improving the roundness. However, this method is costly, complicated to operate, and has poor applicability to small-sized products. Therefore, there is an urgent need for a rounding device with a simple structure, low cost, convenient operation, and the ability to effectively improve the outer diameter roundness of the ring. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a circular forging rounding device, which can effectively improve the roundness of the circular forging and has the advantages of simple structure, low cost, wide application range and convenient operation.

[0005] The technical solution provided by the utility model is as follows:

[0006] A circular forging calibration device comprises a cylinder, a cylinder support plate, a thrust block and a circular forging baffle, wherein the cylinder support plate is fixedly arranged at one end of a hollow frame, the cylinder is horizontally arranged on the cylinder support plate, and the piston rod end of the cylinder is connected to the thrust block through an axle pin, and the circular forging baffle is arranged at the other end of the hollow frame and directly opposite to the thrust block; an opening for taking and placing the circular forging is opened on the side of the hollow frame.

[0007] Furthermore, it also includes inclined plane correction rods arranged on both sides of the hollow frame, and the ends of the inclined plane correction rods away from the oil cylinder are set as inclined planes. The two opposite inclined plane correction rods form a channel for the thrust block to pass through, and the end of the channel close to the circle correction baffle is trumpet-shaped, which is used to correct the thrust block passing through when the piston rod of the oil cylinder is reset.

[0008] Furthermore, an adjusting screw is fixedly provided on the lower side of the piston rod end of the oil cylinder, the adjusting screw is provided with a nut, and an adjusting spring is provided between the nut and the thrust block.

[0009] Furthermore, the hollow frame is welded from a plurality of I-beams, and reinforcing ribs are arranged between the I-beams; a plurality of positioning cross columns and clamping columns are also fixedly arranged on the hollow frame, and the rounding baffle is plugged into the plug-in position formed by the positioning cross columns and the clamping columns.

[0010] Furthermore, a pull ring is provided on the circle alignment baffle.

[0011] Furthermore, it also includes a plurality of cushion blocks which are arranged in the hollow frame and are used to adjust the placement height of the annular forging.

[0012] Beneficial effects of the utility model:

[0013] The utility model realizes effective correction of the outer diameter oval of the ring forging through a simple mechanical pressure adjustment method, greatly improves production efficiency and product quality, and has important practical value. Specifically, the utility model ensures that the circular baffle can be adjusted and placed in different positions to correspond to products with different outer diameters through the clamping column and the positioning cross column to form different corresponding positions; by adopting the inclined plane guide method, after the thrust block is rotated at an angle, when the thrust block moves to the left and returns to the initial state, it is squeezed to rotate and automatically corrected; by adjusting the screw nut welded and fixed to the end face of the cylinder piston rod head, the spring position is adjusted to ensure that the thrust block is upright and does not rotate along the shaft pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a circular calibration device provided in one embodiment of the utility model;

[0016] Figure 2 It is a top view of a circle calibration device provided by an embodiment of the utility model;

[0017] Figure 3 It is a front view of a circle calibration device provided by an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of adjusting the adjustment screw provided by an embodiment of the utility model;

[0019] Figure 5 It is a schematic diagram of the correction of the thrust block provided by one embodiment of the utility model;

[0020] Figure 6 It is a schematic diagram for determining the height of a cushion block provided by an embodiment of the utility model;

[0021] Figure 7 It is a schematic diagram of the positioning arrangement provided by an embodiment of the utility model.

[0022] Among them, the figures are represented as follows: 01-cylinder, 02-fixing bolt, 03-thrust block, 04-axle pin, 05-inclined correction rod, 06-forging ring, 07-pad, 08-clamping column, 09-positioning cross column, 10-triangular reinforcement rib, 11-cylinder support plate, 12-I-beam, 13-rounding baffle, 14-rear baffle, 15-adjusting screw, 16-adjusting spring, 17-lifting ring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 As shown, this embodiment provides a circular forging roundness correction device, the components of which are as follows Figure 2 and Figure 3 As shown, the device uses two upper and lower I-beams 12 with a length of 5.5 meters as the frame. The I-beams 12 are welded with the cylinder support plate 11 and the rear baffle 14 to form a rectangular frame. The two upper and lower cylinders 01 are fixed to the cylinder support plate 11 by a number of fixing bolts 02 and nuts. The thrust block 03 is connected to the cylinder piston rod through the shaft pin 04. The inclined correction rod 05, the clamping column 08, and the positioning cross column 09 are welded at various positions on the surface of the rectangular I-beam as shown in the figure. The triangular reinforcement ribs 10 are welded at various positions to fix and strengthen the local and stabilize the frame structure.

[0025] like Figure 4 As shown, the square head of the adjusting screw 15 is welded and fixed to the lower part of one side of the end face of the cylinder piston rod head. The adjusting spring 16 is moved to the right to an appropriate position and against the lower surface of the rear part of the thrust block by adjusting the nut on the screw to ensure that the side of the thrust block is vertical and does not rotate along the shaft pin.

[0026] The clamping column 08 and the positioning horizontal column 09 form corresponding clamping positions at different positions, which are used to adjust the placement position of the rounding baffle 13 to correspond to forging products with different outer diameters. The specific use process of the rounding device is as follows:

[0027] 1. Equipment adjustment: According to the target size of circularity correction, the circularity correction baffle 13 is vertically clamped into the corresponding clamping positions formed by the clamping posts 08 and the positioning cross posts 09 through the lifting rings 17 provided on the circularity correction baffle 13. The piston rod of the oil cylinder 01 is returned to the initial state, and two appropriate height pads 07 are placed in the frame to adjust the placement height of the ring part.

[0028] 2. Ring part preparation: Mark the position of the maximum outer diameter of the ring part, and use a forklift to horizontally place the ring part into the forging furnace and heat it to the specified temperature.

[0029] 3. Circularity correction: The ring part to be circularity-corrected is taken out of the forging furnace by a forklift, horizontally placed on the pad 07 from the side of the frame, and the maximum outer diameter of the ring part is kept on the same horizontal axis as the piston rod of the oil cylinder. Start the oil cylinder 01. Under the action of the piston rod, the thrust block 03 moves horizontally to the right and contacts the maximum outer diameter of the ring part. Finally, under the extrusion of the thrust block 03 and the circularity correction baffle 13, the ring part is circularity-corrected to the target size. Among them, the inclined plane correction rods 05 are arranged on both sides of the frame. The end of the inclined plane correction rod 05 far from the oil cylinder is set as an inclined plane. The two opposite inclined plane correction rods 05 just form a channel for the thrust block 03 to pass through, and the right side of the channel is flared due to the existence of the inclined plane, so as to correct the position of the passing thrust block 03 when the piston rod returns to its original position after circularity correction, as Figure 5 shown.

[0030] Determination of the height of the pad:

[0031] As Figure 6 shown, the height of the pad 07 is H. When assembled, the distance between the upper and lower piston rods is H0. The centers of the upper and lower piston rods are respectively at a distance of H0 / 2 from the upper and lower I-beams. The vertical distance from the upper surface of the lower I-beam to the bottom surface is H1, and the height of the ring part is set as H2. Then the height range of H2 must satisfy the condition: 0 < H2 < 2H0.

[0032] When H0 ≤ H2 < 2H0, simultaneous circularity correction is performed by the upper and lower cylinders, and H = H1 + H0 - H2 / 2

[0033] When 0 < H2 < H0, single-cylinder circularity correction is adopted (in this case, using two cylinders will cause uneven piston pressure). If the upper cylinder in the instruction manual is used for circularity correction, H = H1 + 3H0 / 2 - H2 / 2. If the lower cylinder is used for circularity correction, H = H1 + H0 / 2 - H2 / 2.

[0034] Determination of the horizontal diameter size:

[0035] As Figure 7As shown, the maximum outer diameter of the elliptical ring is set as Da. The clamping post, positioning cross post and the last baffle form a total of 6 positions with equal intervals from #1 to #6 to correspond to products with different outer diameter sizes. The stroke of the oil cylinder piston rod is set as L0, the single allowable circularity correction amount is 100 mm, and the horizontal clearance for loading the ring is 100 mm. Then the 6 equal interval sizes are L0 - 200. When the piston rod is in the initial state, the distance between the thrust block and #1 is set as L0. Then the maximum circularity correction sizes for each position from #1 to #6 are as follows:

[0036] #1: 0 < Da ≤ L0 - 100

[0037] #2: L0 - 100 < Da ≤ 2L0 - 300

[0038] #3: 2L0 - 300 < Da ≤ 3L0 - 500

[0039] #4: 3L0 - 500 < Da ≤ 4L0 - 700

[0040] #5: 4L0 - 700 < Da ≤ 5L0 - 900

[0041] #6: 5L0 - 900 < Da ≤ 6L0 - 1100

[0042] It can be obtained from the above that when the circularity correction amount is 100 mm and the horizontal clearance for loading the ring is 100 mm, the range of the outer diameter of the product's circular diameter Da can be guaranteed as: 0 < Da ≤ 6L0 - 1100. In this embodiment, the actual stroke L0 of the oil cylinder used is 950 mm, so the effective circular diameter range is 0 - 4600 mm.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A circular forging rounding device, characterized in that: It includes a cylinder, a cylinder support plate, a thrust block and a circle correction baffle. The cylinder support plate is fixedly arranged at one end of a hollow frame. The cylinder is horizontally arranged on the cylinder support plate, and the piston rod end of the cylinder is connected to the thrust block through an axle pin. The circle correction baffle is arranged at the other end of the hollow frame and is opposite to the thrust block. An opening for taking and placing annular forgings is opened on the side of the hollow frame.

2. A circular forging squaring device as claimed in claim 1, characterized in that: It also includes inclined plane correction rods arranged on both sides of the hollow frame, wherein the ends of the inclined plane correction rods away from the oil cylinder are arranged as inclined planes, and the two opposite inclined plane correction rods form a channel for the thrust block to pass through, and the end of the channel close to the circle correction baffle is trumpet-shaped, which is used to correct the thrust block passing through when the piston rod of the oil cylinder is reset.

3. A circular forging squaring device as claimed in claim 1, characterized in that: An adjusting screw is fixedly arranged at the lower side of the piston rod end of the oil cylinder, the adjusting screw is equipped with a nut, and an adjusting spring is arranged between the nut and the thrust block.

4. A circular forging squaring device as claimed in claim 1, characterized in that: The hollow frame is welded by a plurality of I-beams, and reinforcing ribs are arranged between the I-beams; a plurality of positioning cross columns and clamping columns are also fixedly arranged on the hollow frame, and the rounding baffle is plugged into the plug-in position formed by the positioning cross columns and the clamping columns.

5. A circular forging squaring device as claimed in claim 1, characterized in that: A pull ring is arranged on the circle alignment baffle.

6. A circular forging squaring device as claimed in claim 1, characterized in that: The utility model also comprises a plurality of spacers which are arranged in the hollow frame and used for adjusting the placement height of the annular forging.

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