Forge piece fixing and milling equipment

Abstract

The invention relates to the technical field of forge piece machining, in particular to forge piece fixing and milling equipment which comprises three semi-circular ring rails with coincident rotating axes and independent rotation, the radiuses of the three semi-circular ring rails are gradually increased from inside to outside, the rotating centers of the three semi-circular ring rails are movably connected with common lifting type fixing bases, and the lifting type fixing bases are divided into two transversely-oppositely-installed lifting type fixing bases; the opposite faces of the two lifting type fixing bases are each provided with a self-adaptive gas cap clamp. A sliding base is movably connected to each semicircular rail in a sleeving mode, a cross shaft rotating frame is arranged in each sliding base, a telescopic column is arranged in each cross shaft rotating frame, and a milling head is connected to the end, close to the corresponding semicircular rail, of each telescopic column; a container with an upper opening is arranged below the lifting type fixed base and is used for filling and replacing various milling auxiliary liquids; the end of the milling head is high in moving flexibility, multi-position and multi-angle simultaneous milling is achieved, a forge piece is firmly fixed, and the milling precision is guaranteed; and full one-time cooling, lubricating or cleaning of the whole forge piece is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of forging processing, and in particular to a forging fixed milling device. Background Art

[0002] In the metal processing industry, forgings are widely used due to their high strength and good mechanical properties. Forgings usually need to be milled to obtain precise size and shape. However, forgings have various shapes and are often large in size, which brings challenges to subsequent milling. Traditional processing methods usually require multiple clamping and adjustments, which is not only time-consuming and labor-intensive, but also easily leads to accumulated processing errors, affecting product quality. Existing forging fixtures often have the problem of insufficient stability when fixing forgings, which easily causes displacement or vibration of forgings during milling, further affecting processing accuracy and surface quality. With the development of the manufacturing industry, higher requirements are placed on the efficiency and accuracy of forging processing. Therefore, a new type of forging fixing and milling equipment is needed to solve the limitations of the existing technology. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a forging fixed milling device.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: A fixed milling device for forgings, comprising three semicircular ring rails with overlapping rotation axes and independent rotations, the radius r of the three rails increasing from the inside to the outside, the rotation centers of the three rails being movably connected to a common lifting fixed base, the lifting fixed base being divided into two transversely mounted and non-contacting ones, the opposite surfaces of the two lifting fixed bases being provided with adaptive air top clamps, the two adaptive air top clamps extending toward each other to form a clamping array composed of a plurality of top clamping rods; Each semicircular ring rail is movably sleeved with a slide seat, a cross-axis rotating frame is arranged in the slide seat, a telescopic column is arranged in the cross-axis rotating frame, and a milling head is connected to one end of the telescopic column close to the center of the semicircular ring rail; An upper open container is arranged below the lifting fixed base, and various types of milling auxiliary liquids can be filled and replaced in the upper open container.

[0005] Furthermore, the semicircular track includes a first semicircular track, a second semicircular track and a third semicircular track which are arranged from the inside to the outside, and all three are composed of two parallel rows of monorails, and the cross-axis rotating frame is sandwiched between the two rows of monorails.

[0006] Furthermore, the cross-axis turret includes a vertically connected transverse power steering seat and a longitudinal power telescopic seat, the transverse power steering seat drives the longitudinal power telescopic seat to rotate perpendicular to its central axis, and the longitudinal power telescopic seat drives the telescopic column to feed or retract linearly along its central axis.

[0007] Furthermore, the adaptive air top clamp includes a main air cavity and a plurality of sub-air cavities connected to the main air cavity, pistons are arranged one-to-one in the sub-air cavities, and the pistons are connected to the top clamp rods one-to-one.

[0008] Furthermore, the lifting fixed base is connected to three semicircular ring rails respectively through three power turntables arranged in parallel with equal intervals. The power turntable includes a fixed inner disk and an outer disk that is rotatably connected thereto, and the two are separated by an air-supported membrane.

[0009] Furthermore, the arc outer edge of the inner disk is provided with a V-shaped groove, the arc inner edge of the outer disk is provided with a V-shaped ridge, the inclined inner wall of the V-shaped groove is fitted with a ring-shaped array electromagnet, and the inclined inner wall of the V-shaped ridge is fitted with a ring-shaped array permanent magnet.

[0010] Furthermore, the inner plate is provided with a high-pressure air hole connected to the outside, and the high-pressure air hole is connected to the gap between the V-shaped groove and the V-shaped convex ridge.

[0011] Furthermore, the milling auxiliary liquid is a mixture of one or more of a coolant, a lubricant and a cleaning liquid.

[0012] Furthermore, a pit is arranged at the center of the head end of the top clamp rod exposed outside the adaptive gas top clamp, and the lifting fixed base is connected downwardly with a lifting pillar, and the milling head rotates coaxially based on the telescopic pillar.

[0013] Furthermore, the main air cavity is connected to the high-pressure gas supply device through an on-off valve.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a fixed milling device for forgings, which forms three semicircular ring rails with multi-dimensional angles to surround the periphery of the fixed forgings. The end of the milling head has high mobility, and can realize simultaneous milling at multiple positions and angles, thereby significantly improving the milling efficiency and position accuracy. An adaptive air cap clamp is provided to generate multiple independently movable support clamping points, which can automatically adjust their positions according to the shape and position of the surface of the object to form an adaptive clamping shape, firmly fix the forgings, and ensure the milling accuracy. The overall forging can be immediately lowered through a lifting fixed base, and the entire forging can be immersed in a milling auxiliary liquid, so as to fully cool, lubricate or clean the entire forging at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 It is a schematic diagram of the top view of the structure of the present invention; Figure 4 for Figure 3 The enlarged view of point B; Figure 5 It is a perspective structural schematic diagram of the adaptive air cap clamp in the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the adaptive air cap clamp in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the slide seat in the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the power turntable in the present invention; Fig. 9 It is a schematic diagram of the matching position relationship between the annular array electromagnets and the annular array permanent magnets; In the figure: 1, semicircular ring rail; 1a, sliding seat; 1b, cross-axis rotating frame; 1b-1, lateral power steering seat; 1b-2, longitudinal power telescopic seat; 1c, telescopic column; 1d, milling head; 101, first semicircular ring rail; 102, second semicircular ring rail; 103, third semicircular ring rail; 2, lifting fixed base; 2a, lifting pillar; 3, adaptive gas top clamp; 3a, top clamp rod; 3b, total air cavity; 3c, sub-air cavity; 3d, piston; 4, upper open container; 5, milling auxiliary liquid; 6, power turntable; 6a, inner disk; 6a-1, V-shaped groove; 6a-2, annular array electromagnet; 6a-3, high-pressure air hole; 6b, outer disk; 6b-1, V-shaped ridge; 6b-2, annular array permanent magnet. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] like Figures 1 to 9 As shown, a forging fixed milling equipment includes three semicircular ring rails 1 with overlapping rotation axes and independent rotations, the radius r of the three rails increases gradually from the inside to the outside, and the rotation centers of the three rails are movably connected to a common lifting fixed base 2, the lifting fixed base 2 is downwardly connected to a lifting pillar 2a to achieve controlled lifting, the lifting fixed base 2 is divided into two transversely mounted and non-contacting ones, the opposite surfaces of the two lifting fixed bases 2 are provided with adaptive air top clamps 3, the two adaptive air top clamps 3 extend toward each other to form a clamping array composed of a plurality of top clamping rods 3a, the clamping array can automatically form an adaptive shape according to the shape and position of the surface of the object, and firmly clamp the forging to be milled.

[0018] Specifically, in order to achieve milling with a high freedom angle, each semicircular rail 1 is movably sleeved with a slide 1a, a cross-axis turntable 1b is provided in the slide 1a, a telescopic column 1c is provided in the cross-axis turntable 1b, and a milling head 1d is connected to the end of the telescopic column 1c close to the center of the semicircular rail 1. The semicircular rail 1 includes a first semicircular rail 101, a second semicircular rail 102 and a third semicircular rail 103 arranged from the inside to the outside, all of which are composed of two parallel rows of monorails, and the cross-axis turntable 1b is sandwiched between the two rows of monorails. The cross-axis turret 1b includes a vertically connected transverse power steering seat 1b-1 and a longitudinal power telescopic seat 1b-2. The transverse power steering seat 1b-1 drives the longitudinal power telescopic seat 1b-2 to rotate perpendicularly to its central axis. The longitudinal power telescopic seat 1b-2 drives the telescopic column 1c to feed or retract linearly along its central axis. Combined with the sliding seat 1a sliding on the arc path on the semicircular ring rail 1, the end of the milling head 1d can be moved to all positions on the forging except the clamped part, realizing milling with high freedom angle. The three semicircular ring rails 1 form a multi-dimensional angle around the fixed forging, realizing multi-position and multi-angle milling at the same time.

[0019] At the same time, a milling cutter is installed on the milling head 1d. The milling cutter is a tool used to mill forgings. According to different process requirements, milling cutters of different shapes and cutting methods can be selected. The milling head 1d rotates coaxially based on the telescopic column 1c, driving the milling cutter to rotate for milling.

[0020] On the other hand, in order to achieve high-strength and high-adaptability fixation of forgings, the adaptive air top clamp 3 includes a total air chamber 3b and several sub-air chambers 3c connected to the total air chamber 3b. The total air chamber 3b is connected to the high-pressure gas supply device through an on-off valve. The sub-air chambers 3c are provided with pistons 3d one by one. The pistons 3d are connected to the top clamp rods 3a one by one. Each top clamp rod 3a moves independently and in parallel. By pressurizing the total air chamber 3b, it is dispersed into multiple sub-air chambers 3c. The pressure in each sub-air chamber 3c is equal, pushing the piston 3d to translate toward the outer end. The end of the top clamp rod 3a contacts the surface of the extruded forging, generating multiple independently movable support clamping points. These points can automatically adjust their positions according to the shape and position of the surface of the object to form an adaptive clamping shape. In addition, in order to increase the friction of fixed clamping, a pit is provided at the center of the head end of the top clamp rod 3a exposed outside the adaptive air top clamp 3 to contact the surface of the forging to form a negative pressure cavity.

[0021] The lifting fixed base 2 is connected to the two ends of the three semicircular ring rails 1 through three power turntables 6 arranged in parallel at equal intervals, so as to realize the independent operation of each semicircular ring rail 1. The power turntable 6 includes a fixed inner disk 6a and an outer disk 6b that is rotatably connected outside the inner disk 6a. The two are separated by an air-supported membrane, which significantly reduces the rotational friction and the torque loss. The arc outer edge of the inner disk 6a is provided with a V-shaped groove 6a-1, and the arc inner edge of the outer disk 6b is provided with a V-shaped ridge 6b-1. The V-shaped ridge 6b-1 is embedded in the V-shaped groove 6a-1 in a contactless manner. The inclined inner wall of the V-shaped groove 6a-1 is fitted with a ring-shaped array electromagnet 6a-2, and the inclined inner wall of the V-shaped ridge 6b-1 is fitted with a ring-shaped array permanent magnet 6b-2. By controlling the annular array electromagnet 6a-2 to generate magnetic force, a repulsive force or an attractive force is generated on the annular array permanent magnet 6b-2 to move its position, thereby controlling the outer disk 6b to rotate based on the inner disk 6a, and the movement of the outer disk 6b drives the semicircular ring track 1 fixed thereon to operate. The inner disk 6a is provided with a high-pressure air hole 6a-3 connected to the outside. The high-pressure air hole 6a-3 connects the gap between the V-shaped groove 6a-1 and the V-shaped ridge 6b-1. High-pressure gas fills the gap to produce an air-supported film, reducing the relative rotation torque loss.

[0022] A further optimization scheme is that an upper open container 4 is provided below the lifting fixed base 2, and various types of milling auxiliary liquids 5 can be filled and replaced in the upper open container 4, and the milling auxiliary liquid 5 is a mixture of one or more of a coolant, a lubricant and a cleaning liquid; during the milling process, a large amount of friction heat will be generated between the tool and the workpiece. For example, when a high-speed steel tool mills an alloy steel workpiece with a higher hardness, the heat generated by friction may cause the tool edge temperature to rise sharply. If not cooled in time, the hardness of the tool will decrease, and the wear will increase or even damage will occur. The milling coolant can absorb and take away this heat, effectively reducing the temperature of the tool and the workpiece, thereby extending the service life of the tool and ensuring the processing accuracy of the workpiece; during milling, there is relative movement between the tool and the workpiece surface, which will generate a large friction force, and the milling lubricant can form a lubricating film on the tool and workpiece surface. Taking the milling plane as an example, when the cutting edge of the milling cutter contacts the surface of the workpiece, the lubricating film can reduce the friction coefficient between them and reduce the cutting force, which not only helps to improve the quality of the machined surface and reduce the surface roughness, but also makes the milling process smoother and reduces the vibration and wear of the tool; at the same time, a large amount of chips will be generated during the milling process. When milling a workpiece of complex shape or performing deep groove milling, if the chips cannot be discharged in time, they will accumulate between the tool and the workpiece, affecting the continued processing. The milling cleaning fluid can wash the chips away from the processing area, so that the chips leave the contact area between the tool and the workpiece with the flow of the liquid. For example, when milling a mold cavity, good chip removal performance can ensure the smooth progress of the processing process and prevent chips from scratching the processed surface. The solution of the present invention can immediately lower the integral forging through the lifting fixed base 2 when necessary, and immerse it in the milling auxiliary liquid 5 as a whole, so as to achieve full one-time cooling, lubrication or cleaning of the whole.

[0023] When using a forging fixed milling device of the present invention, first move the forging to be processed between the lifting fixed base 2, pressurize the total air chamber 3b inside the adaptive air top clamp 3, and disperse the air pressure into multiple sub-air chambers 3c, pushing the piston 3d to translate toward the outer end, and the end of the top clamp rod 3a contacts the surface of the extruded forging, generating multiple independently movable supporting clamping points, and firmly fixing the forging between the two opposing adaptive air top clamps 3, driving the movement of the outer disk 6b to drive the semicircular ring track 1 fixed thereon to operate, forming a multi-dimensional angle The degree of rotation surrounds the fixed forging, the slide 1a slides or is fixed on the semicircular ring rail 1, the lateral power steering seat 1b-1 drives the longitudinal power telescopic seat 1b-2 to rotate or fix perpendicular to its central axis, the longitudinal power telescopic seat 1b-2 drives the telescopic column 1c to feed, retract or fix along its central axis, and the milling head 1d rotates coaxially based on the telescopic column 1c; the milling cutter is driven to rotate for milling. The above technical scheme comprehensively realizes multi-position and multi-angle milling at the same time, significantly improving the milling efficiency and accuracy. When selecting a milling tool, it is necessary to consider factors such as its material, size and shape, and select it according to different process requirements. When performing milling processing, it is necessary to control the speed, cutting depth and cutting force parameters in the processing process to ensure the processing quality and efficiency. The equipment is designed for automated processing of forgings, and realizes precise milling operations through synchronous clamping and rotation drive, effectively improving processing efficiency and accuracy. It is suitable for various types of forging processing, especially for the production of forgings with complex curved surfaces and high precision requirements.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. For ordinary technicians in this field, various changes, modifications or additions without departing from the concept of the present invention should all fall within the protection scope of the present invention.

Claims

1. A fixed milling equipment for forgings, characterized in that: It comprises three semicircular ring rails (1) whose rotation axes coincide and rotate independently, the radius r of the three rails increasing from the inside to the outside, the rotation centers of the three rails being movably connected to a common lifting fixed base (2), the lifting fixed base (2) being divided into two transversely mounted and non-contacting ones, the opposite surfaces of the two lifting fixed bases (2) being provided with adaptive air top clamps (3), the two adaptive air top clamps (3) extending toward each other to form a clamping array consisting of a plurality of top clamping rods (3a); Each semicircular ring rail (1) is movably sleeved with a slide seat (1a), a cross-axis rotating frame (1b) is arranged in the slide seat (1a), a telescopic column (1c) is arranged in the cross-axis rotating frame (1b), and a milling head (1d) is connected to one end of the telescopic column (1c) close to the center of the semicircular ring rail (1); An upper open container (4) is arranged below the lifting fixed base (2), and various types of milling auxiliary liquids (5) can be filled into and replaced in the upper open container (4).

2. A forging fixed milling equipment according to claim 1, characterized in that: The semicircular ring track (1) comprises a first semicircular ring track (101), a second semicircular ring track (102) and a third semicircular ring track (103) which are arranged in sequence from the inside to the outside, and all three are composed of two rows of parallel monorails, and the cross-axis rotating frame (1b) is sandwiched between the two rows of monorails.

3. A forging fixed milling equipment according to claim 2, characterized in that: The cross-axis rotating frame (1b) comprises a transverse power steering seat (1b-1) and a longitudinal power telescopic seat (1b-2) which are vertically connected. The transverse power steering seat (1b-1) drives the longitudinal power telescopic seat (1b-2) to rotate perpendicularly to its central axis, and the longitudinal power telescopic seat (1b-2) drives the telescopic column (1c) to advance or retract linearly along its central axis.

4. A forging fixed milling equipment according to claim 1, characterized in that: The adaptive air top clamp (3) comprises a main air cavity (3b) and a plurality of sub-air cavities (3c) connected to the main air cavity (3b), pistons (3d) are arranged one-to-one in the sub-air cavities (3c), and the pistons (3d) are connected one-to-one to the top clamp rods (3a).

5. A forging fixed milling equipment according to claim 2, characterized in that: The lifting fixed base (2) is connected to three semicircular ring rails (1) respectively through three power turntables (6) arranged in parallel at equal intervals. The power turntable (6) comprises a fixed inner disk (6a) and an outer disk (6b) that is rotatably connected thereto, and the two are separated by an air-supported membrane.

6. A forging fixed milling device according to claim 5, characterized in that: The arc outer edge of the inner disk (6a) is provided with a V-shaped groove (6a-1), the arc inner edge of the outer disk (6b) is provided with a V-shaped convex ridge (6b-1), the inclined inner wall of the V-shaped groove (6a-1) is fitted with a ring-shaped array of electromagnets (6a-2), and the inclined inner wall of the V-shaped convex ridge (6b-1) is fitted with a ring-shaped array of permanent magnets (6b-2).

7. A forging fixed milling device according to claim 6, characterized in that: The inner plate (6a) is provided with a high-pressure air hole (6a-3) connected to the outside, and the high-pressure air hole (6a-3) is connected to the gap between the V-shaped groove (6a-1) and the V-shaped ridge (6b-1).

8. A forging fixed milling device according to claim 1, characterized in that: The milling auxiliary liquid (5) is a mixture of one or more of a cooling liquid, a lubricating liquid and a cleaning liquid.

9. A forging fixed milling device according to claim 1, characterized in that: A pit is arranged at the center of the head end of the top clamp rod (3a) exposed outside the adaptive air top clamp (3); the lifting fixed base (2) is connected downwardly with a lifting support (2a); and the milling head (1d) rotates coaxially based on the telescopic column (1c).

10. A forging fixed milling device according to claim 4, characterized in that: The main gas chamber (3b) is connected to the high-pressure gas supply device via an on-off valve.

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