Clamping device for large-mouth thin-wall nickel-copper alloy complete product
Technical Field
The utility model discloses a clamping device for machining mechanical products, in particular to a clamping device for a large-mouth thin-wall nickel-copper alloy complete product.
Background
The large-caliber thin-wall nickel-copper alloy complete product consists of a shell and a triple calcined piece (a pneumatic piston, a piston ring and a baffle ring). The diameter of the inner circle and the outer circle is large, the diameter of the thin wall is about 1200-1600 mm, the runout is less than or equal to 0.05, the roundness is less than or equal to 0.065, the minimum dimensional tolerance is 0-0.036mm, and the requirements on the diameter, the thin wall and the precision are high. And the material is nickel-copper alloy material. The nickel-copper alloy material is a difficult-to-process material, and specifically comprises the following components:
The nickel-copper alloy material is an alloy which takes nickel as a main element and contains a certain amount of copper, iron, manganese and other elements, and the difficult processing performance is mainly represented by the following aspects:
The high viscosity, the chip produced during cutting has higher viscosity, is easy to adhere to the cutter, and affects the processing quality and the service life of the cutter. The heat conduction is poor, heat generated in the machining process is not easy to dissipate, so that the cutter is overheated, the service life of the cutter is influenced, the machining precision is easily influenced, the hardness is high, a more wear-resistant cutter and a higher cutting parameter are required to be used for ensuring effective machining, the deformation is easy to occur in the machining process, and proper machining process and fixture are required to be adopted for ensuring the precision.
The large-caliber thin-wall part is suitable for being processed on the vertical lathe, because the vertical layout of the vertical lathe is favorable for better bearing gravity and cutting force, the deformation of the thin-wall part in the processing process is reduced, and the precision is favorable for being ensured. The large-caliber thin-wall nickel-copper alloy complete product clamping device for the horizontal numerical control lathe is specially designed and manufactured for solving the problem that the production progress requirement can not be met far enough because the horizontal numerical control lathe is mainly used as the horizontal numerical control lathe in the company and only 1 vertical lathe is used.
Disclosure of Invention
The utility model aims to solve the technical problems, and provides the clamping device for the large-mouth thin-wall nickel-copper alloy complete product, which is suitable for clamping a horizontal numerical control lathe, has a very simple structure, is convenient to clamp, effectively improves the machining precision, and can be simultaneously suitable for machining a shell and a triple calcined piece.
The clamping assembly comprises a screw rod and a pressing plate, wherein the front end of the screw rod sequentially penetrates through the arch-shaped boss and the pressing plate pressed on the end face of a product and then is fastened by a nut.
The inner side of the first boss on one side end surface of the base is also provided with a second boss, a plurality of inner side screw holes are annularly and uniformly distributed on the top surface of the second boss, and a plurality of outer side screw holes are annularly and uniformly distributed on the end surface of the base on the outer side of the first boss.
The pressing plate is provided with a waist round hole for the screw rod to pass through.
The clamping assembly further comprises a supporting block, and the supporting block is located between the arch-shaped boss and the pressing plate.
The supporting block is positioned on the outer side of the screw rod between the arch-shaped boss and the pressing plate.
The beneficial effects are that:
The clamping device is suitable for machining of a numerical control horizontal lathe, the horizontal layout is beneficial to natural falling of chips, and meanwhile, the clamping device is suitable for clamping a shell and a triple forging piece, can directly clamp a tool, is low in clamping difficulty, reduces workpiece deformation, improves workpiece machining precision, shortens machining time compared with a vertical lathe, and remarkably improves machining efficiency.
Drawings
Figure 1 is a front view of the base of the present utility model.
Fig. 2 is a side view of the base of the present utility model.
Fig. 3 is a schematic structural view of the housing.
Fig. 4 is a schematic view of a clamping housing of the present utility model.
FIG. 5 is a schematic structural view of a triple forging.
FIG. 6 is a front view of the present utility model clamping a triple forging.
FIG. 7 is a side view of the present utility model clamping a triple forging.
Wherein, 1-base, 1.1-arch boss, 1.1-center screw hole, 1.2-first boss, 1.3-second boss, 1.4-outside screw hole, 1.5-middle screw hole, 1.6-inside screw hole, 2-shell, 2.1-flange end inner hole, 2.2-flange inner end face, 2.3-inner hole boss end face, 3-supporting block, 4-screw, 5-pressing plate, 5.1-waist round hole, 6-nut, 7-triple forging, 7.1-piston ring, 7.2-pneumatic piston, 7.3-baffle ring
Detailed Description
The utility model is further explained below with reference to the drawings:
the utility model comprises a base 1 and a clamping assembly.
Referring to fig. 1 and 2, a plurality of arch-shaped bosses 1.1 are uniformly distributed on the outer circle of the base 1, a central screw hole 1.1.1 is formed in the arch-shaped bosses 1.1, an annular first boss 1.2 is formed in one side end face of the base 1, a plurality of middle screw holes 1.5 are uniformly distributed on the top face of the first boss 1.2 in an annular mode, a second boss 1.3 is further arranged on the inner side of the first boss 1.2, a plurality of inner side screw holes 1.6 are uniformly distributed on the top face of the second boss 1.3 in an annular mode, and a plurality of outer side screw holes 1.4 are uniformly distributed on the end face of the base 1 on the outer side of the first boss 1.2 in an annular mode.
The clamping assembly comprises a screw 4, a pressing plate 5 and a supporting block 3, wherein the front end of the screw 4 sequentially penetrates through the arch-shaped boss 1.1.1 and the pressing plate 5 pressed on the end face of a product and is fastened through a nut 6. The pressing plate 5 is provided with a waist round hole 5.1 for the screw rod to pass through, and the supporting block 3 is positioned at the outer side of the screw rod 4 between the arch-shaped boss 1.1 and the pressing plate 5.
Fig. 3 is a schematic structural diagram of a shell, referring to fig. 4, when an inner hole of the shell 2 is required to be processed, the inner hole 2.1 at the flange end is inlaid on the first boss 1.2 of the base 1, the screw 4 passes through a central screw hole 1.1.1 of the arch boss 1.1, a waist round hole 5.1 of the pressing plate 5 is passed through, the supporting block 3 is parallel to the screw 4, one end of the supporting block 3 supports the end face of the arch boss 1.1, the other end of the supporting block 3 supports one side of the pressing plate 5, the other side of the pressing plate 5 is pressed on the inner end face 2.2 of the flange of the shell 2, and the nut 6 passes through the screw 4 and is fastened. In this way, the housing 2 is fixed to the base 1 by the arch boss 1.1, the support block 3, the screw 4, the pressing plate 5 and the nut 6 on the base 1, and the rest arch bosses 1.1 on the base 1 are operated once. Then, the horizontal lathe clamps the outer circle of the base 1, semi-finish turning and finish turning all parts of the inner hole of the shell 2 to the technological requirements.
When the excircle of the shell 2 is required to be processed, an inner hole 2.1 at the flange end is inlaid on a first boss 1.2 of the base 1, one end of a screw 4 is fixed on one of middle screw holes 1.5, the other end passes through a waist round hole 5.1 of a pressing plate 5, a supporting block 3 is parallel to the screw 4, one end of the supporting block 3 supports the end face of the arch-shaped boss 1.1, the other end of the supporting block 3 supports one side of the pressing plate 5, the other side of the pressing plate 5 is pressed on the boss end face 2.3 of the inner hole of the shell 2, and a nut 6 passes through the screw 4 and is fastened. The operation is carried out once on the rest middle screw holes 1.5 of the base 1, so that the shell 2 is fixed on the base 1, then the horizontal lathe clamps the outer circle of the base 1, and semi-finish turning and finish turning are carried out on all parts of the outer circle of the shell 2 until the process is required.
Fig. 5 is a schematic structural diagram of the triple forging 7, which consists of a piston ring 7.1, a pneumatic piston 7.2 and a baffle ring 7.3. Referring to fig. 6 and 7, when the inner circle, the small end outer circle and the groove of the triple forging piece 7 are required to be processed, an inner hole at one end of the piston ring 7.1 is inlaid on the 2 nd boss 1.3, one end of the screw 4 is fixed on the outer screw hole 1.4, the other end of the screw 4 passes through the waist round hole 5.1 of the pressing plate 5, the supporting block 3 is parallel to the screw 4, one end of the supporting block 3 supports the end face of the arch boss 1.1, the other end of the supporting block 3 supports one side of the pressing plate 5, the other side of the pressing plate 5 is pressed on the flange end face 7.2.1 of the pneumatic piston 7.2, and the nut 6 passes through the screw 4 and is fastened. The operation is carried out on the screw holes 1.4 on the other outer sides of the base 1 once, the outer circle of the base 1 is clamped by a horizontal lathe once, firstly, the inner circle and the outer circle of the baffle ring 7.3 are half finely turned and finely turned until the technological requirements are met, and then the baffle ring 7.3 is cut off. And then semi-finish turning and finish turning the inner circle of the pneumatic piston 7.2, the outer circle of the small end and the groove to the technological requirements.
When the excircle of the pneumatic piston 7.2 is required to be processed, the base 1, the piston ring 7.1 and the pneumatic piston 7.2 are moved up and down from the numerical control sleeper, and firstly, the 8 screws 4, the 8 supporting blocks 3, the pressing plate 5 and the nuts 6 fixed on the outside screw holes 1.4 are detached from the numerical control sleeper. Then screw rod 4 one end is fixed on inboard screw 1.6, and the other end passes clamp plate 5 slotted hole 5.1, supporting shoe 3 and screw rod 4 parallel, and supporting shoe 3 one end supports base 1 terminal surface, and the supporting shoe 3 other end supports clamp plate 5 one side, and clamp plate 5 another side presses pneumatic piston 7.2 hole end, 7.2.2 departments, and nut 6 wears on screw rod 4 and fastens. In the operation, the rest inner side screw holes 1.6 of the base 1 are operated for one time, the horizontal lathe is started, the outer circle of the base is clamped again, and the outer circle of the pneumatic piston 7.2 is turned to the requirement.
The base 1 together with the piston ring 7.1 and the pneumatic piston 7.2 is moved down, the machine tool is turned to a plane, the end face leaves 1 millimeter allowance, and the pneumatic piston 7.2 is cut off from the base. At the moment, only a piston ring 7.1 remains on the base 1, the screw 4, the pressing plate 5 and the supporting block 3 are used for pressing the inner end face of the pneumatic piston 7.2 from the outer side, and half finish turning and finish turning are used for pressing the inner hole of the pneumatic piston 7.2 until the technological requirement is met. The screw 4, the pressing plate 5 and the supporting block 3 are used for semi-finish turning and finish turning the outer circle of the pneumatic piston 7.2 from the inner end surface of the pneumatic piston 7.2 to the technological requirement. Finally, the piston ring 7.1 is knocked off from the base 1, and the end face is finish-turned to the technological requirement.
So far, one set of tooling completes the processing of complete products of the shell 2, the baffle ring 7.3, the pneumatic piston 7.2 and the piston ring 7.1.