A processing tool for a cylindrical forging

Abstract

The utility model relates to a kind of processing tool for cylindrical forge piece, including bottom plate;Including at least two support columns, the support column is detachably connected on bottom plate, the support column is perpendicular to bottom plate, the support column is evenly arranged along the circumferential direction;Including at least two hydraulic cylinders, the hydraulic cylinder is detachably connected on bottom plate, the hydraulic cylinder is perpendicular to bottom plate, the hydraulic cylinder is provided with piston rod, the head of the piston rod protrudes the top end of hydraulic cylinder, the head of the piston rod is rotatably connected with pressure block, the utility model's advantage lies in improving the stability of fixed cylindrical forge piece, avoid position deviation in the process of processing influence surface machining accuracy.

Description

Technical Field

[0001] This utility model relates to the field of forging processing tools, and in particular to a processing fixture for cylindrical forgings. Background Technology

[0002] With the development of industrial technology, more and more new equipment is being designed and manufactured. Cylindrical forgings are common basic components, generally used as structural base components for equipment shells, such as pressure vessel shells, reactor shells, large motor shells, and gas turbine shells.

[0003] After heat treatment, the surface of the cylindrical forging needs to be machined to remove burrs and oxide layers. Typically, the cylindrical forging is placed on a platform and ground using an angle grinder. However, because a certain type of cylindrical forging has thin walls and is lightweight, the maximum static friction between the forging and the platform is low. When the external force exceeds this maximum static friction, the cylindrical forging shifts position, affecting the surface machining accuracy.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model discloses a machining fixture for cylindrical forgings.

[0006] A machining fixture for cylindrical forgings includes a base plate; at least two support columns detachably connected to the base plate and perpendicular to the base plate, the support columns being evenly arranged along the circumference; and at least two hydraulic cylinders detachably connected to the base plate and perpendicular to the base plate, each hydraulic cylinder having a piston rod with its head extending beyond the top of the cylinder, and a pressure block rotatably connected to the head of the piston rod.

[0007] Furthermore, the piston rod has an adapter at its head and the pressure block has an adapter groove at its tail. The adapter is located in the adapter groove, and a rotating shaft is inserted between the adapter and the pressure block to achieve a rotatable connection.

[0008] Furthermore, the top surface of the hydraulic cylinder is provided with a mounting block, and a connecting plate is provided between the mounting block and the pressure block. Both ends of the connecting plate are provided with through holes. The through hole at the upper end of the connecting plate is rotatably connected to the middle part of the pressure block by inserting a rotating shaft, and the through hole at the lower end of the connecting plate is rotatably connected to the mounting block by inserting a rotating shaft.

[0009] Furthermore, each mounting block is equipped with two connecting plates, which are respectively arranged on the left and right sides of the mounting block.

[0010] Furthermore, a pressure head is provided at the end of the pressure block away from the piston rod.

[0011] Furthermore, the base plate is detachably connected with several positioning posts.

[0012] Furthermore, the top of the positioning post is provided with a contact, the contact is conical, and the top of the contact is an arc surface.

[0013] Furthermore, the base plate is detachably connected with several positioning pins, which are perpendicular to the base plate.

[0014] Advantages of this utility model: 1. When fixing the cylindrical forging, the support column abuts against the bottom surface of the cylindrical forging, which plays the role of supporting the cylindrical forging. The piston rod of the hydraulic cylinder moves in extension and retraction, which drives the pressure block to move towards the cylindrical forging, so that the pressure block presses the cylindrical forging, improves the stability of fixing the cylindrical forging, and avoids positional displacement during processing, which affects the surface machining accuracy.

[0015] 2. When the piston rod drives the pressure block to rotate, the connecting plate rotates accordingly. The connecting plate restricts the range of motion of the pressure block to ensure that the pressure block can press the cylindrical forging from above as designed.

[0016] 3. When the contact of the positioning post touches the middle position of the bottom annular surface of the cylindrical forging, it indicates that the cylindrical forging is fixed in the correct position. Otherwise, it indicates that there is a deviation in the fixation. The positioning post improves the positioning accuracy. The top of the contact is set as an arc surface to avoid the sharp point scratching the forging.

[0017] 4. When the locating pin abuts against the inner wall of the through hole of the cylindrical forging, it indicates that the cylindrical forging is fixed in the correct position, playing a secondary positioning role and further improving the positioning accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the machining fixture used for cylindrical forgings.

[0019] In the diagram: 1. Chassis; 2. Support column; 3. Positioning column; 31. Contact; 4. Positioning pin; 5. Hydraulic cylinder; 51. Piston rod; 511. Adapter; 52. Pressure block; 521. Pressure head; 522. Adapter groove; 53. Mounting block; 54. Connecting plate. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] Example 1: A machining fixture for cylindrical forgings, such as Figure 1 As shown, it includes a base plate, which serves as the mounting base for other parts.

[0022] like Figure 1 As shown, several positioning posts 3 are detachably connected to the base plate by bolts, and the positioning posts 3 are perpendicular to the base plate. In this embodiment, the number of positioning posts 3 is set to two. The top of the positioning post 3 is provided with a contact 31, which is conical in shape and has an arc surface at the top to avoid the sharp point scratching the cylindrical forging. When fixing the cylindrical forging, the positioning post 3 abuts against the middle position of the bottom annular surface of the cylindrical forging through the contact 31, indicating that the cylindrical forging is fixed in the correct position.

[0023] like Figure 1 As shown, several positioning pins 4 are detachably connected to the base plate, and the positioning pins 4 are perpendicular to the base plate. In this embodiment, two positioning pins 4 are provided. When fixing the cylindrical forging, the positioning pins 4 abut against the inner wall of the through hole of the cylindrical forging, and the positioning pins 4 and the positioning post 3 work together to improve the positioning accuracy.

[0024] like Figure 1 As shown, the machining fixture for the cylindrical forging also includes at least two support columns 2, which are detachably connected to the base plate by bolts. In this embodiment, the number of support columns 2 is set to three, and the three support columns 2 are evenly arranged along the circumference to ensure force balance. When fixing the cylindrical forging, the support columns 2 contact the bottom surface of the fixed cylinder to support the forging from below.

[0025] like Figure 1 As shown, the machining fixture for the cylindrical forging also includes at least two hydraulic cylinders 5. The bottom of the hydraulic cylinders 5 is fixed to the base plate by bolts, and the hydraulic cylinders 5 are perpendicular to the base plate. The hydraulic cylinders 5 and the support columns 2 are arranged in pairs, with the hydraulic cylinders 5 located inside the support columns 2. In this embodiment, three hydraulic cylinders 5 are provided.

[0026] like Figure 1 As shown, the hydraulic cylinder 5 is equipped with a piston rod 51, the head of which extends out of the top of the hydraulic cylinder 5, and the piston rod 51 performs telescopic movements. An adapter 511 is provided at the head of the piston rod 51.

[0027] A pressure block 52 is rotatably connected to the head of the piston rod 51. An adapter groove 522 is formed at the tail of the pressure block 52. An adapter 511 is inserted into the adapter groove 522, and a rotating shaft is inserted between the adapter 511 and the pressure block 52 to achieve a rotatable connection. A pressure head 521 is provided at the end of the pressure block 52 away from the piston rod 51, and the pressure head 521 is used to press the cylindrical forging.

[0028] The top surface of the hydraulic cylinder 5 is provided with a mounting block 53. A connecting plate 54 is provided between the mounting block 53 and the pressure block 52. Each mounting block 53 has two connecting plates 54, which are respectively arranged on the left and right sides of the mounting block 53. Both ends of the connecting plate 54 have through holes. The through hole at the upper end of the connecting plate 54 is rotatably connected to the middle of the pressure block 52 by inserting a rotating shaft. The through hole at the lower end of the connecting plate 54 is rotatably connected to the mounting block 53 by inserting a rotating shaft. The hydraulic cylinder 5 drives the pressure block 52 to move, so that the pressure block 52 presses against the top surface of the cylindrical forging, thereby fixing it.

[0029] Specific work process: In the initial state, the pressure block 52 tilts upwards. The operator transports the cylindrical forging to a fixed position. At this time, the support column 2 supports the bottom of the cylindrical forging, the positioning column 3 contacts the bottom surface of the cylindrical forging via the contact 31, and the positioning pin 4 contacts the inner wall of the through hole in the cylindrical forging. Then, the hydraulic cylinder 5 is activated, and the piston rod 51 extends upwards, driving the pressure block 52 to rotate towards the cylindrical forging. Finally, the pressure head 521 of the pressure block 52 presses against the top surface of the cylindrical forging, quickly fixing it in place. After processing is complete, the hydraulic cylinder 5 resets, the piston rod 51 retracts, the pressure block 52 rotates and opens, and the operator can then remove the cylindrical forging.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A machining fixture for cylindrical forgings, characterized in that, Including the base plate; It includes at least two support columns, which are detachably connected to the base plate, the support columns are perpendicular to the base plate, and the support columns are evenly arranged along the circumferential direction; It includes at least two hydraulic cylinders, which are detachably connected to the base plate and are perpendicular to the base plate. Each hydraulic cylinder is equipped with a piston rod, the head of which extends out of the top of the hydraulic cylinder and is rotatably connected to a pressure block.

2. The machining fixture for cylindrical forgings according to claim 1, characterized in that: The piston rod has an adapter at its head and the pressure block has an adapter groove at its tail. The adapter is located in the adapter groove, and a rotating shaft is inserted between the adapter and the pressure block to achieve a rotatable connection.

3. The machining fixture for cylindrical forgings according to claim 2, characterized in that: The top surface of the hydraulic cylinder is provided with a mounting block, and a connecting plate is provided between the mounting block and the pressure block. Both ends of the connecting plate have through holes. The through hole at the upper end of the connecting plate is rotatably connected to the middle of the pressure block by inserting a rotating shaft, and the through hole at the lower end of the connecting plate is rotatably connected to the mounting block by inserting a rotating shaft.

4. The machining fixture for a cylindrical forging according to claim 3, characterized in that: Each mounting block is equipped with two connecting plates, which are respectively arranged on the left and right sides of the mounting block.

5. The machining fixture for cylindrical forgings according to claim 1, characterized in that: A pressure head is provided at the end of the pressure block away from the piston rod.

6. The machining fixture for cylindrical forgings according to claim 1, characterized in that: Several positioning posts are detachably connected to the base plate.

7. The machining fixture for a cylindrical forging according to claim 6, characterized in that: The top of the positioning post is provided with a contact, which is conical in shape and has an arc surface at the top.

8. The machining fixture for a cylindrical forging according to claim 1, characterized in that: The base plate is detachably connected to several positioning pins, which are perpendicular to the base plate.

Images