Method for forming lifting ring rod part of water faucet
Technical Field
The invention belongs to the technical field of faucet lifting ring forging, and particularly relates to a method for forming a rod part of a faucet lifting ring.
Background
The water tap lifting ring belongs to a typical bilateral symmetry type part and is widely applied to an oil rig system. The rod parts at the two ends of the product are strictly symmetrical, and the diameters of the rod parts are sequentially increased from the two ends to the middle, so that the product has uniform taper. The traditional production method is free forging to ensure the taper, and the product has the defects of poor surface finish, large machining allowance of the post procedure and the like. Moreover, due to the reasons that the roundness of the blanks after cogging is poor, the fire consumption is difficult to master and the like, the two ends of the blanks are difficult to accurately distribute, the diameter size or the length size of the two formed sides has larger difference, the requirements cannot be met, and the production difficulty is higher. Therefore, how to accurately distribute materials, improve the surface quality of products and reduce the machining allowance becomes a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a method for forming a water faucet lifting ring rod part, and solves the problems of poor size accuracy and high production difficulty of the existing water faucet lifting ring rod part.
The technical scheme adopted by the invention is that the method for forming the stem part of the faucet lifting ring is implemented according to the following steps:
step 1, obtaining the weight of a raw material according to the size of a faucet lifting ring, blanking according to the weight, heating to the initial forging temperature, and preserving heat to obtain a blank;
2, adopting a ball head forging die to throw ball heads at two ends, and roughly forging other residual blanks to the size of a blank large table;
step 3, adopting a special die to carry out rounding on the roots of the ball heads at two ends prepared in the step 2 without feeding;
step 4, feeding the ball heads at the two ends of the ball heads subjected to the rounding in the step 3 to the middle large platform of the water faucet lifting ring rod part, rounding at the feeding position, repeating the step n times, and stopping forging until the length L between the ball heads and the end part of the middle large platform meets the size requirement;
and 5, taking the rest blank forged in the step 4 as a middle large platform material, and forging the blank on a flat anvil to form a circle, namely finishing the forming of the faucet lifting ring rod part.
The present invention is also characterized in that,
in the step 1, the initial forging temperature is 1150-sand 1180 ℃, and the heat preservation time is 3 h.
The special mold in step 3 comprises: an upper die and a lower die which are symmetrically arranged,
the upper die comprises a body a, the bottom of the body a is provided with a cavity a with a taper along the axial direction, and two ends of the cavity a are respectively provided with an upturned cavity a;
the lower die comprises a body b, a cavity b with a taper is arranged at the bottom of the body b along the axial direction of the body b, and two ends of the cavity b are respectively provided with an upturned cavity b.
The cavity a and the cavity b form a truncated cone-shaped cavity; the cavity a and the cavity b at the same side form a horn-shaped cavity.
The taper of the cavity a and the cavity b is consistent with the taper of the rod part of the water faucet lifting ring.
And 3, before the round is broken, the press pressing amount is determined when the diameter of the smaller end of the round table-shaped cavity is equal to the diameter of the end, close to the ball head, of the faucet lifting ring rod part.
The feeding distance B' in the step 4 is half of the length B of the cavity, and the reduction t is reduced, then
In the formula, n is the repeated times, B' is the feeding distance, B is the length of the cavity, L is the length between the root of the ball head and the end of the middle big platform, D 1 Is the diameter of the rod part near one end of the ball head, D 2 Is the diameter of the rod part close to one end of the middle big platform.
The invention has the beneficial effects that: the method for forming the water faucet lifting ring rod part accurately obtains the weight of the required material according to the size of the water faucet lifting ring, and gradually falls into a circle from the root parts of ball heads at two ends to a large platform in the middle of the water faucet lifting ring rod part, so that the materials at two sides are ensured to be uniformly distributed, the surface smoothness of the rod part surface and the taper of the rod part are ensured through a cavity of a special die, the surface quality of the water faucet lifting ring is improved, and the materials are saved.
Drawings
FIG. 1 is a schematic view of a faucet bail of the present invention in a method for forming the stem of a faucet bail;
FIG. 2 is a schematic view of step 3 of a method of forming a stem portion of a faucet bail of the present invention;
FIG. 3 is a schematic view of step 4 of a method of forming a stem portion of a faucet bail of the present invention;
FIG. 4 is a front view of an upper die used in a method of forming a stem portion of a faucet bail of the present invention;
FIG. 5 is a side view of an upper die used in a method of forming a stem portion of a faucet bail of the present invention;
FIG. 6 is a front view of a lower die used in a method of forming a stem portion of a faucet bail of the present invention;
fig. 7 is a side view of a lower die used in a method of forming a stem portion of a faucet bail in accordance with the present invention.
In the figure, 1 is a faucet lifting ring, 2 is a body a, 3 is a cavity a, 4 is a cavity a, 5 is a body b, 6 is a cavity b, 7 is a cavity b, 8 is an upper die, and 9 is a lower die.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a method for forming a rod part of a water faucet lifting ring, as shown in figure 1, the water faucet lifting ring 1 comprises a large platform, rod parts are symmetrically arranged at two ends of the large platform, and ball heads are symmetrically arranged at one end, far away from the large platform, of the rod part;
the method is implemented according to the following steps:
step 1, obtaining the weight of the raw materials according to the size of a faucet lifting ring 1, blanking according to the weight, heating to the initial forging temperature of 1150-;
2, adopting a ball head forging die to throw ball heads at two ends, and roughly forging other residual blanks to the size of a blank large table;
as shown in fig. 2, in step 3, a special die is used for rounding the roots of the ball heads at two ends prepared in step 2, and the pressing amount of a press is determined before rounding when the diameter of the smaller end of the cavity of the special die is equal to the diameter of the end, close to the ball head, of the rod part of the water faucet lifting ring 1, and the press is not fed;
wherein, special mould includes: an upper die 8 and a lower die 9 which are symmetrically arranged,
as shown in fig. 4 and 5, the upper die comprises a body a2, a tapered cavity a3 is arranged at the bottom of the body a2 along the axial direction, and two ends of the cavity a3 are respectively provided with an upturned cavity a 4;
as shown in fig. 6 and 7, the lower die comprises a body b5, a tapered cavity b6 is arranged at the bottom of the body b5 along the axial direction, and two ends of the cavity b6 are respectively provided with an upturned cavity b 4;
the taper of the cavity a3 and the cavity b6 is consistent with the taper of the rod part of the water tap lifting ring 1;
the cavity a3 and the cavity b6 form a truncated cone-shaped cavity; the cavity a4 and the cavity b4 on the same side form a horn-shaped cavity;
as shown in fig. 3, step 4, feeding the ball heads from the ball head roots at the two ends after the ball heads are rounded in the step 3 to the middle big platform of the rod part of the water faucet lifting ring 1, rounding at the feeding position, repeating the step n times, and stopping forging when the length L between the ball head roots and the middle big platform end meets the size requirement;
the feeding distance B' is half of the length B of the cavity, and the reduction t is smaller than
In the formula, n is the repeated times, B' is the feeding distance, B is the length of the cavity, L is the length between the root of the ball head and the end of the middle big platform, D 1 Is the diameter of a rod part near one end of the ball head, D 2 The diameter of the rod part close to one end of the middle big table;
step 5, using the residual blank forged in the step 4 as a material for a middle big table, and forging the blank on a flat anvil to round to enable the diameter D of the big table 3 And the length S meets the design requirement and stops, and the forming of the water faucet lifting ring rod part is completed.
Through the mode, the method for forming the rod part of the water faucet lifting ring ensures the smooth finish of the surface of the rod part and the taper of the rod part through the cavity of the special die, improves the surface quality of the water faucet lifting ring, saves materials, accurately obtains the weight of the required materials according to the size of the water faucet lifting ring, and gradually falls into a circle from the root parts of ball heads at two ends to a large middle platform of the rod part of the water faucet lifting ring, so that the materials at two sides are uniformly distributed, the diameter sizes of the rod parts at two ends are consistent, the sizes are accurate, and the production process is simple.