CN211965787U - Vertical forging die combination of double-coupling gear blank with deep blind hole - Google Patents

Abstract

The utility model discloses a vertical forging die combination with a double-coupling gear blank with a deep blind hole, which comprises a collecting die, a pre-forging die and a final forging die; Die slope is cylindrical, the top width of the cylindrical shape gradually increases until it is consistent with the bottom width of the conical shape, and the top width of the conical shape is larger than the bottom width of the cylindrical shape; the cavity of the concave module of the pre-forging die includes the upper large cylinder The cylinder head and the lower part are cylindrical with a draft angle, and the cylinder and the large cylinder head are connected by a conical section; the upper convex module of the pre-forging die, the upper punch of the pre-forging die and the lower concave module of the pre-forging die are enclosed. The pre-forging cavity is in the shape of "Y" as a whole; the upper convex module of the final forging die, the upper punch of the final forging die, the left half of the final forging die, the right half of the final forging die and the lower concave module of the final forging die can work together The final forging model cavity is enclosed. It can directly forge deep blind holes, avoid flashing, reduce the process, save material cost and machining cost.

Description

A vertical forging die assembly for double-coupling gear blanks with deep blind holes

technical field

The utility model relates to the technical field of forging molds, in particular to a mold combination in the forging process of a double-coupling gear blank, which includes a collecting mold, a pre-forging mold and a final forging mold.

Background technique

As shown in Figure 1, the traditional manufacturing method of double-coupling gear with deep blind hole is to use horizontal forging first, but horizontal forging cannot forge deep blind holes, only double-coupling gear blanks with full core can be forged. After the forging is completed, the deep blind hole is completed by machining. In addition, horizontal forging also requires trimming, which increases the cost of a set of trimming dies, resulting in a long process flow, high material costs, and high subsequent machining costs.

Utility model content

The utility model aims to provide a die combination used in the vertical forging process of a double-coupling gear blank, which can directly forge a deep blind hole, avoid the generation of flash, and at the same time reduce the process, save the cost of materials and machining cost.

To this end, the technical scheme adopted by the present utility model is: a vertical forging die combination of a double-coupling tooth blank with a deep blind hole, which includes an aggregate die, a pre-forging die and a final forging die;

The aggregate die includes an upper concave module of the aggregate die fixedly installed under the upper formwork of the aggregate die, a concave module of the aggregate die fixedly installed above the lower die plate of the aggregate die, and a concave module vertically extending into the aggregate die. The ejector mechanism at the bottom of the module cavity, the cavity of the upper concave module of the collecting die is a conical shape with a small upper part and a large lower part, and the cavity of the lower concave module of the collecting die is a cylindrical shape with a draft angle , the top width of the cylinder gradually increases until it is consistent with the bottom width of the cone, and the top width of the cone is greater than the bottom width of the cylinder;

The pre-forging die includes a pre-forging die upper convex module fixedly installed under the pre-forging die upper template, a pre-forging die lower concave module fixedly installed above the pre-forging die lower template, and a pre-forging die concave module vertically extending into the pre-forging die. The ejector mechanism at the bottom of the module cavity, the upper punch of the pre-forging die is installed in the middle of the upper convex module of the pre-forging die, the upper punch of the pre-forging die includes a rod body and a conical round head, and the upper convex module of the pre-forging die is installed The bottom surface of the pre-forging die is flat and is flush with the root of the conical round head of the punch on the pre-forging die; the cavity of the concave module of the pre-forging die includes a large cylinder head on the upper part and a cylinder with a draft angle on the lower part. The cylindrical shape and the large cylindrical head are connected by a conical section, and both ends of the conical section are rounded transitions; the upper convex module of the pre-forging die, the upper punch of the pre-forging die and the lower concave module of the pre-forging die are surrounded by The pre-forging cavity is "Y" shaped as a whole;

The final forging die comprises a final forging die upper convex module fixedly installed under the final forging die upper template, a final forging die concave module fixedly installed above the final forging die lower template, and a final forging die concave module vertically extending into the final forging die. The ejector mechanism at the bottom of the module cavity, the upper punch of the final forging die is installed in the middle of the upper convex module of the final forging die, and the left half of the final forging die and the final forging die are arranged above the lower concave module of the final forging die The right half-die, the outer sides of the left and right half-die of the final forging die are respectively equipped with a final forging die opening and closing cylinder, which can be opened and closed under the action of the final forging die opening and closing cylinder. The upper punch of the forging die, the left half of the final forging die, the right half of the final forging die and the lower concave module of the final forging die can jointly form the final forging model cavity, and the final forging model cavity includes a deep blind hole and a large gear on the upper part. The position cavity, the lower pinion position cavity and the bottom cylinder with a draft angle, and the lower pinion position cavity is facing the interface between the left and right half molds of the final forging die and the concave module of the final forging die; An elastic locking device is also installed below the upper template of the final forging die, and the elastic locking device includes a final forging die locking sleeve, a final forging die sliding rod and a final forging die compression spring, the final forging die sliding rod. The upper end of the final forging die is fixed on the upper template of the final forging die, and the compression spring of the final forging die and the locking sleeve of the final forging die are slid up and down on the sliding rod of the final forging die; when the left and right halves of the final forging die are closed, the final forging die When the upper die plate drives the upper convex module of the final forging die, the upper punch of the final forging die and the elastic locking device of the final forging die to descend to the effective working stroke of the final forging die, the inner cone surface of the locking sleeve of the final forging die can be connected with the left and right of the final forging die. The outer cone surfaces of the right half-die are completely in contact, thereby locking the left and right half-dies of the final forging die; when the upper platen of the final forging die continues to descend, the compression spring of the final forging die is continuously compressed, and the locking sleeve of the final forging die remains stationary , the locking force increases, the upper convex block of the final forging die and the upper punch of the final forging die continue to descend, and the upper punch of the final forging die goes deep into the final forging model cavity and fills the lower pinion position cavity of the blank with the material, and the final forging die The upper convex module and the upper punch of the final forging die continue to descend until the upper convex module of the final forging die is in contact with the left and right half-dies of the final forging die, and the final forging of the blank is completed.

As a preferred option of the above solution, in the collecting die, the upper concave module of the collecting die has an upper end, the upper end is inserted into the upper template of the collecting die, and the upper module pressing ring of the collecting die presses the concave module on the collecting die On the stepped surface of the collecting die, it is locked on the upper template of the collecting die by screws, so as to realize the installation of the upper concave module of the collecting die on the upper template of the collecting die; the lower concave module of the collecting die has a lower end, The head is inserted into the positioning seat of the lower concave die of the collecting die, the positioning seat of the lower concave die of the collecting die is inserted into the lower template of the collecting die, the pressing ring of the lower module of the collecting die is pressed on the step surface of the lower concave module of the collecting die, and It is locked on the lower template of the aggregate die by screws, so as to realize the installation of the lower concave module of the aggregate die on the lower template of the aggregate die. The upper and lower concave modules of the aggregate die are respectively installed and fixed on the corresponding template by the module pressing ring and combined with the screws, so as to avoid opening holes on the upper and lower concave modules, to ensure the strength of the upper and lower concave modules themselves, and at the same time to be able to Realize the replacement of different molds on the upper and lower concave modules, with good versatility, convenient and fast installation, stable and reliable.

Further preferably, in the pre-forging die, a pre-forging die positioning sleeve is provided outside the upper convex module of the pre-forging die, and the bottom surface of the pre-forging die positioning sleeve is higher than the bottom surface of the upper convex module of the pre-forging die. The concave module of the forging die is inserted into the concave module of the pre-forging die, and the bottom surface of the positioning sleeve of the pre-forging die is in contact with the top surface of the concave module of the pre-forging die. The pre-forging die positioning sleeve is added as part of the pre-forging die upper convex module. The pre-forging die upper convex module and the pre-forging die upper punch are replaced frequently during the forging process, while the pre-forging die positioning sleeve is replaced less frequently. The body design can reduce the cost of use; at the same time, the contact surface between the positioning sleeve of the pre-forging die and the lower concave module of the pre-forging die is moved relative to the bottom of the upper convex module of the pre-forging die, which further avoids the generation of flash.

It is further preferred that, in the pre-forging die, the upper punch of the pre-forging die, the upper convex block of the pre-forging die and the positioning sleeve of the pre-forging die all have upper end heads, and the upper end heads are sequentially assembled from the inside to the outside and then inserted. In the upper die plate of the pre-forging die, the upper module pressing ring of the pre-forging die is pressed against the step surface of the positioning sleeve of the pre-forging die, and locked on the upper die plate of the pre-forging die by screws, so as to realize the pre-forging die upper convex module in the pre-forging die. Installation on the upper template of the forging die; the lower concave module of the pre-forging die has a lower end head, and the lower end head is inserted into the lower die positioning seat of the pre-forging die, and the lower die positioning seat of the pre-forging die is inserted into the lower template of the pre-forging die , the lower module pressing ring of the pre-forging die is pressed on the step surface of the lower concave module of the pre-forging die, and locked on the lower template of the pre-forging die by screws, so as to realize that the lower concave module of the pre-forging die is on the lower template of the pre-forging die. installation. The upper and lower modules of the pre-forging die are respectively installed and fixed on the corresponding template by means of a module compression ring and combined with screws, so as to avoid opening holes on the upper and lower modules, ensuring the strength of the upper and lower modules themselves, and at the same time, different molds can be realized. The replacement on the upper and lower modules has good versatility, convenient and fast installation, and is stable and reliable.

It is further preferred that, in the pre-forging die, the conical section between the cylinder and the large cylindrical head of the lower concave module cavity of the pre-forging die is divided into upper and lower sections, and the angle α1 between the upper conical section and the horizontal plane is smaller than the small conical section. The angle α2 with the horizontal plane, and the rounded transition between the two conical segments. The conical section adopts a segmented design with different tapers, which is more conducive to plastic deformation and improves the forging quality at the root of the large cylinder head.

Further preferably, in the final forging die, the upper convex module of the final forging die adopts an inner and outer split structure, including the upper punch body of the final forging die and the upper punch cover of the final forging die, and the bottom surface of the upper punch cover of the final forging die. It is higher than the bottom surface of the upper punch body of the final forging die. When the die is closed, the upper punch body of the final forging die is inserted between the left and right halves of the final forging die. , the top surface of the right half of the mold contacts. The replacement frequency of the upper punch body of the final forging die is higher than that of the upper punch casing of the final forging die, and the split structure is adopted to reduce the use cost; The bottom surface of the main body of the punch on the die is moved, which further avoids the generation of flash.

Further preferably, in the final forging die, the upper punch of the final forging die and the upper punch body of the final forging die are all provided with upper end heads, and the upper end heads are sequentially fitted together from the inside to the outside and then inserted into the upper protrusion of the final forging die. In the die positioning seat, the outer casing of the upper punch of the final forging die is pressed against the step surface of the main body of the upper punch of the final forging die, and is locked on the upper punch positioning seat of the final forging die by screws. It is locked on the upper template of the final forging die by screws, so as to realize the installation of the upper convex module of the final forging die on the upper template of the final forging die; the lower concave module of the final forging die has a lower end, and the lower end is inserted into the final forging die In the lower concave die positioning seat, the final forging die lower concave die positioning seat is inserted into the final forging die lower template, the final forging die lower module pressing ring is pressed on the step surface of the final forging die lower concave module, and is locked by screws. on the lower template of the final forging die, so as to realize the installation of the concave module of the final forging die on the lower template of the final forging die. The upper convex module of the final forging die adopts a split structure, and there is no need to open holes on the main body of the final forging die, which improves the strength of the main body of the final forging die. , very convenient; the concave module of the final forging die adopts the lower module compression ring of the final forging die and combines screws to install and fix it on the lower template of the final forging die, so as to avoid opening holes on the concave module of the final forging die and ensure the final forging die. The strength of the lower module itself, and at the same time, it can realize the replacement of different molds on the lower module of the final forging die, with good versatility, convenient and fast installation, stable and reliable.

Further preferably, in the final forging die, the elastic locking device further comprises a final forging die locking sleeve positioning plate and a final forging die sliding sleeve, and the final forging die locking sleeve positioning plate is fixedly sleeved on the final forging die for locking. Outside the casing, the positioning plate of the final forging die locking sleeve is slidably installed on the final forging die sliding rod through the final forging die sliding sleeve, and is locked and prevented from falling off by the nut, thereby realizing the final forging die locking sleeve on the final forging die sliding rod. sliding installation.

Further preferably, in the final forging die, the front end of the final forging die opening and closing cylinder is connected with the corresponding left and right half die of the final forging die through the final forging die connecting block, and the rear end of the final forging die opening and closing cylinder is fixed at the " On the column of the L"-shaped final forging die cylinder mounting seat, the bottom plate of the final forging die cylinder mounting seat is installed on the final forging die lower template through the final forging die cylinder positioning seat.

It is further preferred that the ejector mechanisms in the aggregate die, the pre-forging die and the final forging die all adopt a split structure, including a lower ejector block and an ejector rod. The upper end of the rod abuts on the anti-fall off protrusion, and the stroke range of the anti-fall off protrusion is between the corresponding lower concave module and the lower cushion block. The ejector rod is a commonly used part in the press. It adopts a split structure, which is equivalent to only adding a lower ejector block to the existing press, so as to achieve universal use.

The beneficial effects of the present utility model:

(1) The design features of the aggregate die: a. A specially designed aggregate model cavity structure is adopted, that is, the cavity has a conical head with a small upper and a large lower to ensure that there is enough in the subsequent pre-forging and final forging process. The material is used to form the large gear part of the blank; b. The cavity structure of the conical head, combined with the precise control of the blanking (usually the aggregate cavity has a 1% margin relative to the blank), in the aggregate process, The billet finally flows towards the interface of the upper and lower die, which can effectively avoid the formation of flash at the interface. During the final forging process, folds or interlayers are produced to improve the quality of the forgings.

(2) The design features of the pre-forging die: a. A pre-forging cavity with an overall "Y" shape surrounded by an upper convex module, an upper punch and a lower concave module is adopted, so that the upper punch is pressed into the interior of the blank , to form the upper taper hole of the blank to ensure that the blind hole and the large gear part are initially formed during the pre-forging process, and to ensure the feasibility of the subsequent final forging of the deep blind hole; b. The upper punch adopts a conical round head, and the lower concave module The cavity consists of a large cylindrical head on the upper part and a cylindrical shape with a draft angle on the lower part. The cylinder and the large cylindrical head are connected by a conical section, and both ends of the conical section are rounded transitions, passing through the details of the cavity. The design avoids the generation of flash, which is conducive to plastic deformation and improves the quality of forgings.

(3) The design features of the final forging die: the upper convex module, the upper punch, the left half die, the right half die and the lower concave module can be used to form the final forging model cavity. The final forging model cavity includes deep blind holes, upper The large gear position cavity, the lower pinion position cavity and the bottom cylinder with a draft angle, and the lower pinion position cavity is facing the interface between the left and right half molds and the concave module, which can ensure that both The final forging produces a blank with two gear positions and a deep blind hole, and can ensure smooth demoulding, which is an important part of the vertical forging process of double-shaft gears with deep blind holes.

To sum up, the forging die combination is applied to the vertical forging of double coupling gear blanks with deep blind holes, which improves the quality of the forgings, avoids the generation of flash, reduces the process, and saves the cost of materials and machining. cost.

Description of drawings

Figure 1 is a schematic structural diagram of a double-coupling gear with a deep blind hole after machining.

Fig. 2 is the structural schematic diagram of the aggregate mold in the utility model.

Fig. 3 is the structural schematic diagram of the pre-forging die in the utility model.

FIG. 4 is a partial enlarged view of FIG. 3 .

Fig. 5 is the structural schematic diagram of the final forging die in the utility model.

FIG. 6 is a D-D cross-sectional view of FIG. 5 .

Figure 7. Process flow chart of vertical forging of double coupling gear blanks with deep blind holes.

Detailed ways

Below by embodiment and in conjunction with accompanying drawing, the utility model is further described:

The utility model relates to a vertical forging die combination for a double-coupling tooth blank with a deep blind hole, which includes an aggregate die, a pre-forging die and a final forging die, which are respectively used for the aggregate, pre-forging and final forging forming of the blank. As shown in Figure 7, the vertical forging method is adopted, and the blanking, heating to the forging temperature, aggregate, pre-forging, and final forging forming processes can be used in turn to directly forge a double-coupling tooth blank with a deep blind hole.

As shown in Figure 2, the aggregate die is mainly composed of the upper die plate A-1 of the aggregate die, the upper concave module A-2 of the aggregate die, the lower die plate A-3 of the aggregate die, the lower concave module A-4 of the aggregate die, and the aggregate die upper concave module A-2. Lower die positioning seat A-5, upper module pressing ring A-6 of aggregate die, lower module pressing ring A-7 of aggregate die, upper backing plate A-8 of aggregate die, lower top block 9, The ejector rod 10, the lower block of the aggregate die A-11, the aggregate die guide sleeve A-12 and the aggregate die guide column A-13 are composed.

The upper concave module A-2 of the aggregate die is fixedly installed below the upper template A-1 of the aggregate die, and the lower concave module A-4 of the aggregate die is fixedly installed above the lower template A-3 of the aggregate die. The concave module A-2 and the concave module A-4 of the aggregate die together form the aggregate model cavity. The ejector mechanism can extend vertically into the bottom of the cavity A-4 of the concave module of the collecting die to eject the formed blank.

Specifically: the cavity of the upper concave module A-2 of the aggregate die is a conical shape with a small upper part and a large lower part, and the cavity of the lower concave module A-4 of the aggregate die is a cylindrical shape with a draft angle. The width of the top gradually increases until it matches the width of the bottom of the cone, which is wider than the bottom of the cylinder.

Preferably, the upper concave module A-2 of the collecting die has an upper end, the upper end is inserted into the upper template A-1 of the collecting die, and the upper module pressing ring A-6 of the collecting die is pressed against the upper concave module of the collecting die The step surface of A-2 is locked on the upper template A-1 of the aggregate die by screws, so as to realize the installation of the upper concave module A-2 of the aggregate die on the upper template A-1 of the aggregate die. The lower concave module A-4 of the aggregate die has a lower end, the lower end is inserted into the lower concave die positioning seat A-5 of the aggregate die, and the lower concave die positioning seat A-5 of the aggregate die is inserted into the lower template A-3 of the aggregate die Inside, the lower module pressing ring A-7 of the aggregate die is pressed on the step surface of the lower concave module A-4 of the aggregate die, and is locked on the lower die plate A-3 of the aggregate die by screws, so as to realize the aggregate die. The installation of the concave module A-4 on the lower template A-3 of the aggregate die. It is best to use hexagon socket countersunk head screws.

Preferably, between the upper concave module A-2 of the aggregate die and the upper template A-1 of the aggregate die, there is an upper plate of the aggregate die A-8, the lower concave die positioning seat A-5 of the aggregate die and the lower aggregate die Preferably, there is a block A-11 under the aggregate mold between the template A-3.

The ejector mechanism preferably adopts a split structure, which is composed of a lower ejector block 9 and an ejector rod 10 . The lower end of the lower top block 9 is provided with an anti-separation protrusion 9a, the upper end of the ejector rod 10 abuts on the anti-separation protrusion 9a, and the stroke range of the Between blocks A-11 under the mold. The stroke of the ejector mechanism is determined by the stroke range h of the anti-separation protrusion 9a.

At least two sets of guiding mechanisms are arranged between the upper template A-1 of the aggregate mold and the lower template A-3 of the aggregate mold, but are not limited to two groups. Each set of guide mechanism is composed of collecting die guide sleeve A-12 and collecting die guide column A-13, which guide the up and down movement of the upper template A-1 of the collecting die and the upper concave module A-2 of the collecting die.

As shown in Figure 7, in the process of aggregate, the blank heated to the forging temperature is loaded into the lower die of the aggregate die, and the upper slider of the press drives the upper die of the aggregate die to descend from the initial position to the lower die. After the plane is in contact with the lower plane of the upper die, the forming of the aggregate is completed; after that, the upper slider of the press drives the upper die of the aggregate die to go up to the initial position, the ejector rod pushes the lower ejector upward, ejects the blank, and manually clamps it. Hold out the blank to complete a cycle of the aggregate process.

As shown in Figures 3 and 4, the pre-forging die is mainly composed of the upper template B-1 of the pre-forging die, the upper convex module B-2 of the pre-forging die, the lower template B-3 of the pre-forging die, and the lower concave module B of the pre-forging die. -4. The lower die positioning seat of the pre-forging die B-5, the upper module pressing ring of the pre-forging die B-6, the lower module pressing ring of the pre-forging die B-7, the upper backing plate of the pre-forging die B-8, the lower Top block 9, ejector rod 10, pre-forging die lower block B-11, pre-forging die guide sleeve B-12, pre-forging die guide column B-13, pre-forging die upper punch B-14, pre-forging die Positioning sleeve B-15 composition.

The upper convex module B-2 of the pre-forging die is fixedly installed under the upper plate B-1 of the pre-forging die, and the lower concave module B-4 of the pre-forging die is fixedly installed above the lower plate B-3 of the pre-forging die. The convex module B-2 and the lower concave module B-4 of the pre-forging die together form a pre-forging model cavity. The ejector mechanism can extend vertically into the bottom of the cavity B-4 of the concave module of the pre-forging die to eject the formed blank. A pre-forging die upper punch B-14 is installed in the middle of the pre-forging die upper convex module B-2.

Specifically: the upper punch B-14 of the pre-forging die includes the upper rod body and the lower conical round head. The bottom surface of the upper convex module B-2 of the pre-forging die is flat and flush with the root of the conical round head of the upper punch B-14 of the pre-forging die. The cavity of the concave module B-4 of the pre-forging die includes a large cylinder head on the upper part and a cylinder with a draft angle on the lower part. The cylinder and the large cylinder head are connected by a conical section, and both ends of the conical section Rounded transitions. The pre-forging cavity enclosed by the upper convex module B-2 of the pre-forging die, the upper punch B-14 of the pre-forging die and the lower concave module B-4 of the pre-forging die is in a "Y" shape as a whole.

Preferably, a pre-forging die positioning sleeve B-15 is provided outside the upper convex module B-2 of the pre-forging die, and the bottom surface of the pre-forging die positioning sleeve B-15 is higher than the bottom surface of the pre-forging die upper convex module B-2. When the die is closed, the lower concave module B-4 of the pre-forging die is inserted into the lower concave module B-4 of the pre-forging die, and the bottom surface of the pre-forging die positioning sleeve B-15 is in contact with the top surface of the lower concave module B-4 of the pre-forging die. Of course, the upper convex module B-2 of the pre-forging die and the pre-forging die positioning sleeve B-15 can also be integrated into one design, but the use cost is higher.

Preferably, the conical section between the cylinder and the large cylinder head of the lower concave module B-4 of the pre-forging die is divided into upper and lower sections, and the angle α1 between the upper conical section and the horizontal plane is smaller than the clip between the small conical section and the horizontal plane. Angle α2, and a rounded transition between the two conical segments.

Preferably, the upper punch B-14 of the pre-forging die, the upper convex module B-2 of the pre-forging die and the positioning sleeve B-15 of the pre-forging die are all provided with upper end heads, and are assembled together from the inside to the outside through the upper end heads. Then insert it into the upper template B-1 of the pre-forging die, and the upper module pressing ring B-6 of the pre-forging die is pressed on the step surface of the pre-forging die positioning sleeve B-15, and is locked on the pre-forging die upper template B by screws. -1, so as to realize the installation of the upper convex module B-2 of the pre-forging die on the template B-1 of the pre-forging die. The lower concave module B-4 of the pre-forging die has a lower end head, which is inserted into the lower concave die positioning seat B-5 of the pre-forging die, and the lower concave die positioning seat B-5 of the pre-forging die is inserted into the lower die plate B- In 3, the lower module pressing ring B-7 of the pre-forging die is pressed on the step surface of the lower concave module B-4 of the pre-forging die, and is locked on the lower plate B-3 of the pre-forging die by screws, so as to realize the pre-forging Installation of die lower concave module B-4 on pre-forging die lower template B-3. It is best to use hexagon socket countersunk head screws.

Preferably, between the upper convex module B-2 of the pre-forging die and the upper template B-1 of the pre-forging die, a pre-forging die upper backing plate B-8, the pre-forging die lower concave die positioning seat B-5 and the pre-forging die lower plate are preferably arranged. Preferably, a lower block B-11 of the pre-forging die is arranged between the template B-3.

The ejector mechanism preferably adopts a split structure, which is composed of a lower ejector block 9 and an ejector rod 10 . The lower end of the lower top block 9 is provided with an anti-separation protrusion 9a, the upper end of the ejector rod 10 abuts on the anti-separation protrusion 9a, and the stroke range of the Between blocks B-11 under the forging die. The stroke of the ejector mechanism is determined by the stroke range h of the anti-separation protrusion 9a.

At least two sets of guide mechanisms are arranged between the upper die plate B-1 of the pre-forging die and the lower die plate B-3 of the pre-forging die, but are not limited to two sets. Each group of guide mechanism is composed of a pre-forging die guide sleeve B-12 and a pre-forging die guide column B-13, which guide the up and down movement of the pre-forging die upper template B-1 and the pre-forging die upper convex module B-2.

With reference to Figure 7, in the pre-forging process, the blank after the aggregate process is completed is put into the lower die of the pre-forging die, and the upper slider of the press drives the upper punch of the pre-forging die (including the positioning sleeve, the upper convex module) , upper punch) from the initial position down to the upper plane of the lower die and contact with the lower plane of the positioning sleeve of the upper punch, at the same time the upper punch is pressed into the blank to form the upper taper hole of the blank, and the pre-forging is completed; pressure The slider on the machine drives the upper punch of the pre-forging die to go up to the initial position, the ejector rod pushes the lower ejector block upward, ejects the blank, and manually clamps and takes out the blank to complete a pre-forging work cycle.

Combined with the final forging die shown in Figure 5 and Figure 6, it is mainly composed of the upper template C-1 of the final forging die, the upper convex module C-2 of the final forging die, the lower template C-3 of the final forging die, and the lower concave module C of the final forging die. -4. Final forging die lower concave die positioning seat C-5, final forging die upper punch positioning seat C-6, final forging die lower module pressing ring C-7, final forging die cylinder positioning seat C-8, lower Top block 9, top material rod 10, final forging die lower block C-11, final forging die guide sleeve C-12, final forging die guide column C-13, final forging die upper punch C-14, final forging die Cylinder mounting seat C-15, final forging die left half-die C-16, final forging die right half-die C-17, final forging die opening and closing cylinder C-18, final forging die sliding rod C-19, final forging die compression It is composed of spring C-20, final forging die locking sleeve positioning plate C-21, final forging die sliding sleeve C-22, final forging die connecting block C-23, final forging die locking sleeve C-24.

The final forging die upper convex module C-2 is fixedly installed below the final forging die upper template C-1, and the final forging die lower concave module C-4 is fixedly installed above the final forging die lower template C-3. The ejector mechanism can vertically extend into the bottom of the cavity of the concave module C-4 of the final forging die, and is used to eject the formed blank. A final forging die upper punch C-14 is installed in the middle of the final forging die upper convex module C-2.

Above the concave module C-4 of the final forging die, a left half-die C-16 of the final forging die and a right half-die C-17 of the final forging die are arranged. The outer sides of the left half of the final forging die C-16 and the right half of the final forging die C-17 are respectively equipped with a final forging die opening and closing cylinder C-18, the left half of the final forging die C-16, and the right half of the final forging die. C-17 can be opened and closed (separated or closed) under the driving of the corresponding final forging die opening and closing cylinder C-18.

Final forging die upper convex module C-2, final forging die upper punch C-14, final forging die left half die C-16, final forging die right half die C-17 and final forging die lower concave module C-4 can Together they form the final forging model cavity. The final forging cavity is used to form the final forging blank. The final forging cavity includes a deep blind hole, an upper large gear position cavity, a lower pinion position cavity and a bottom cylinder with a draft angle, and the lower The pinion position cavity is facing the interface between the left half of the final forging die C-16, the right half of the final forging die C-17 and the concave module C-4 of the final forging die to ensure that the left half of the final forging die C-16, After the right half of the final forging die C-17 is separated, the blank can be successfully demolded under the action of the ejector mechanism.

An elastic locking device is also installed under the template C-1 of the final forging die. The elastic locking device is mainly composed of the final forging die locking sleeve C-24, the final forging die sliding rod C-19 and the final forging die compression spring C- 20 compositions. The upper end of the final forging die sliding rod C-19 is fixed on the final forging die upper template C-1, and the final forging die compression spring C-20 and the final forging die locking sleeve C-24 slide up and down on the final forging die sliding rod C. -19 on.

When the left half-die C-16 of the final forging die and the right half-die C-17 of the final forging die are closed, the upper die plate C-1 of the final forging die drives the upper convex module C-2 of the final forging die and the upper punch C-14 of the final forging die When the elastic locking device descends to the effective working stroke h1 of the final forging die, the inner cone surface of the final forging die locking sleeve C-24 can match the left half of the final forging die C-16 and the right half of the final forging die C-17. The outer cone surfaces are in complete contact, thereby locking the left half of the final forging die C-16 and the right half of the final forging die C-17 to prevent the left half of the final forging die C-16 and the right half of the final forging die C-17 from separating . When the final forging die upper template C-1 continues to descend, the final forging die compression spring C-20 is continuously compressed, and the final forging die locking sleeve C-24 remains unchanged, the locking force increases, and the final forging die upper convex module C-2. The upper punch C-14 of the final forging die continues to descend, and the upper punch C-14 of the final forging die goes deep into the final forging model cavity and fills the pinion position cavity at the lower part of the blank with material, and the upper convex module C of the final forging die is C-2. -2. The upper punch C-14 of the final forging die continues to descend until the upper convex module C-2 of the final forging die contacts with the left half of the final forging die C-16 and the right half of the final forging die C-17. The final forging is completed.

Preferably, the final forging die upper convex module C-2 adopts an inner and outer split structure, including the final forging die upper punch main body C-2a and the final forging die upper punch cover C-2b, the final forging die upper punch cover C-2b. The bottom surface of -2b is higher than the bottom surface of the upper punch body C-2a of the final forging die. When the die is closed, the upper punch body C-2a of the final forging die is inserted into the left half of the final forging die C-16 and the right half of the final forging die. Between the dies C-17, the bottom surface of the upper punch casing C-2b of the final forging die is in contact with the top surfaces of the left half die C-16 of the final forging die and the right half die C-17 of the final forging die. Of course, the upper convex module C-2 of the final forging die can also adopt an integrated structure.

In order to facilitate the installation, the punch C-14 on the final forging die and the upper punch body C-2a of the final forging die are equipped with upper end heads, and the upper end heads are assembled together from the inside to the outside and then inserted into the upper punch of the final forging die. In the positioning seat C-6, the upper punch cover C-2b of the final forging die is pressed against the stepped surface of the upper punch body C-2a of the final forging die, and is locked on the punch positioning seat C-2a on the final forging die by screws. 6; the final forging die upper punch positioning seat C-6 is locked on the final forging die upper template C-1 by screws, so as to realize the final forging die upper convex module C-2 on the final forging die upper template C-1 installation.

The concave module C-4 of the final forging die is provided with a lower end, the lower end is inserted into the positioning seat C-5 of the lower concave die of the final forging die, and the positioning seat C-5 of the lower concave die of the final forging die is inserted into the lower template C-5 of the final forging die In 3, the clamping ring C-7 of the lower module of the final forging die is pressed on the step surface of the lower concave module C-4 of the final forging die, and is locked on the lower template C-3 of the final forging die by screws, so as to realize the final forging Installation of die lower concave module C-4 on final forging die lower template C-3.

Preferably, a final forging die lower block C-11 is arranged between the final forging die lower concave die positioning seat C-5 and the final forging die lower template C-3.

The ejector mechanism preferably adopts a split structure, which is composed of a lower ejector block 9 and an ejector rod 10 . The lower end of the lower top block 9 is provided with an anti-separation protrusion 9a, the upper end of the ejector rod 10 abuts on the anti-separation protrusion 9a, and the stroke range of the Between the spacers C-11 under the forging die. The stroke of the ejector mechanism is determined by the stroke range h of the anti-separation protrusion 9a.

There are at least two sets of guide mechanisms, preferably four sets, between the upper template C-1 of the final forging die and the lower template C-3 of the final forging die. Each guide mechanism is composed of the final forging die guide sleeve C-12 and the final forging die guide column C-13, which guide the up and down movement of the final forging die upper template C-1 and the final forging die upper convex module C-2.

Preferably, the elastic locking device further comprises a final forging die locking sleeve positioning plate C-21 and a final forging die sliding sleeve C-22, the final forging die locking sleeve positioning plate C-21 is fixedly sleeved on the final forging die to lock In addition to the sleeve C-24, the final forging die locking sleeve positioning plate C-21 is slidably installed on the final forging die sliding rod C-19 through the final forging die sliding sleeve C-22, and is locked and prevented from falling off by the nut, thereby realizing the final forging die. Sliding installation of forging die locking sleeve C-24 on final forging die sliding rod C-19.

The front end of the final forging die opening and closing cylinder C-18 is connected with the corresponding left and right half-dies 16 and 17 through the final forging die connecting block C-23, and the rear end of the final forging die opening and closing cylinder C-18 is fixed at "L" On the column of the final forging die cylinder mounting seat C-15, the bottom plate of the final forging die cylinder mounting seat C-15 is installed on the final forging die lower template C-3 through the final forging die cylinder positioning seat C-8.

The final forging die upper template C-1, the final forging die upper convex module C-2, the final forging die lower template C-3, the final forging die lower concave module C-4, the final forging die lower concave die positioning seat C-5 , Final forging die upper punch positioning seat C-6, final forging die lower module clamping ring C-7, final forging die cylinder positioning seat C-8, lower top block 9, top material rod 10, final forging die lower pad Block C-11, final forging die guide sleeve C-12, final forging die guide column C-13, final forging die upper punch C-14, final forging die cylinder mounting seat C-15, final forging die left half die C -16. Final forging die right half-die C-17, final forging die opening and closing cylinder C-18, final forging die sliding rod C-19, final forging die compression spring C-20, compression sleeve positioning plate 21, final forging Die sliding sleeve C-22, final forging die connecting block C-23, final forging die locking sleeve C-24.

As shown in Figure 7, the final forging process is as follows: the left and right final forging dies open and close the cylinder C-18, and move to the center of the die at the same time, so that the left half of the final forging die C-16 and the right half of the final forging die C- 17. Clamp the die to form a complete lower mold cavity with the fixed concave module C-4 of the final forging die. Load the blank after the pre-forging process into the lower mold cavity, and the upper slider of the press drives the final forging of the final forging die. When the upper die plate C-1, the final forging die upper convex module C-2, the final forging die upper punch C-14 and the elastic locking device descend to the effective working stroke of the die, the final forging die locking sleeve C-24 inner cone The surface is completely in contact with the outer cone surface of the left half of the final forging die C-16 and the right half of the final forging die C-17, and the left and right half of the die are locked so that they remain in a closed state after being stressed. The slider of the press continues to descend, at this time the final forging die compression spring C-20 is continuously compressed, the final forging die locking sleeve C-24 remains stationary, the locking force increases, and the final forging die upper convex module C-2, The upper punch C-14 of the final forging die continues to descend, and the upper punch C-14 of the final forging die begins to contact the blank and penetrates deep into the blank, so that the cavity at the lower pinion position of the blank is filled with material, and the final forging die is convex. Module C-2, the upper punch C-14 of the final forging die continues to descend until the lower plane of the upper punch cover C-2b of the final forging die and the left half of the final forging die C-16 and the right half of the final forging die C-16 The upper plane of -17 is in contact, and the final forging of the blank is completed at this time; the upper slider of the press drives the upper die plate C-1 of the final forging die, the upper convex module C-2 of the final forging die, and the upper punch of the final forging die. When C-14 and the elastic locking device go up to the effective working stroke of the die, the inner cone surface of the final forging die locking sleeve C-24 begins to separate from the left half of the final forging die C-16 and the right half of the final forging die C-17 the outer conical surface of the final forging die, the slider continues to drive the upper die plate C-1 of the final forging die, the upper convex module C-2 of the final forging die, the upper punch C-14 of the final forging die and the elastic locking device to return to the initial position, and the left and right end The opening and closing cylinder C-18 of the forging die moves back to the left and right directions, so that the left half die C-16 of the final forging die and the right half die C-17 of the final forging die are separated, and the ejector mechanism moves upward to eject the blank, and manually clamps and takes it out. The blank, completes a final forging work cycle.

Claims (10)

1. a double-coupling tooth blank vertical forging die combination with a deep blind hole, comprising an aggregate die, a pre-forging die and a final forging die; it is characterized in that: The aggregate die includes an upper concave module (A-2) of the aggregate die that is fixedly installed under the upper template (A-1) of the aggregate die, and an aggregate that is fixedly installed above the lower template (A-3) of the aggregate die. The lower concave module (A-4) of the die, and the ejector mechanism vertically extending into the bottom of the cavity of the lower concave module (A-4) of the collecting die, and the cavity of the upper concave module (A-2) of the collecting die It is a conical shape with a small top and a large bottom. The cavity of the lower concave module (A-4) of the aggregate die is a cylindrical shape with a draft angle, and the width of the top of the cylindrical shape gradually increases until it matches the bottom of the conical shape. The width is the same, the top width of the cone is greater than the bottom width of the cylinder; The pre-forging die includes a pre-forging die upper convex module (B-2) fixedly installed under the pre-forging die upper template (B-1), and a pre-forging die fixed above the pre-forging die lower template (B-3) The lower concave module (B-4) of the die, and the ejector mechanism vertically extending into the bottom of the cavity of the lower concave module (B-4) of the pre-forging die, which is installed in the middle of the upper convex module (B-2) of the pre-forging die There is a pre-forging die upper punch (B-14), the pre-forging die upper punch (B-14) includes a rod body and a conical round head, and the bottom surface of the pre-forging die upper convex module (B-2) is flat, And it is flush with the root of the conical round head of the punch (B-14) on the preforging die; The cylindrical shape of the die inclination is connected with the large cylindrical head through the conical section, and the two ends of the conical section are rounded; The pre-forging cavity enclosed by the head (B-14) and the pre-forging die concave module (B-4) has a "Y" shape as a whole; The final forging die comprises a final forging die upper convex block (C-2) fixedly installed under the final forging die upper template (C-1), and a final forging die fixedly installed above the final forging die lower template (C-3) The die lower concave module (C-4), and the ejector mechanism vertically extending into the bottom of the cavity of the final forging die lower concave module (C-4), the final forging die is installed on the middle of the convex module (C-2) There is an upper punch of the final forging die (C-14), and a left half of the final forging die (C-16) and a right half of the final forging die (C-4) are arranged above the lower concave module of the final forging die (C-4). -17), the outer sides of the left and right halves of the final forging die (C-16, C-17) are respectively equipped with the final forging die opening and closing cylinder (C-18), and can open and close the cylinder (C-18) in the final forging die. 18) to realize opening and closing, the final forging die upper convex module (C-2), the final forging die upper punch (C-14), the final forging die left half die (C-16), the final forging die The right half-die (C-17) and the concave module of the final forging die (C-4) can together form the final forging model cavity, and the final forging model cavity includes a deep blind hole, a large gear position cavity in the upper part, and a small cavity in the lower part. The gear position cavity and the bottom cylindrical shape with a draft angle, and the lower pinion position cavity is facing the left and right halves of the final forging die (C-16, C-17) and the concave module of the final forging die ( C-4) interface; an elastic locking device is also installed under the upper template (C-1) of the final forging die, and the elastic locking device includes a final forging die locking sleeve (C-24), a final forging die locking sleeve (C-24), a Forging die sliding bar (C-19) and final forging die compression spring (C-20), the upper end of the final forging die sliding bar (C-19) is fixed on the final forging die upper template (C-1), so The final forging die compression spring (C-20) and the final forging die locking sleeve (C-24) are slid up and down on the final forging die sliding rod (C-19); when the final forging die left and right halves (C-19) -16, C-17) are closed, the final forging die upper template (C-1) drives the final forging die upper convex module (C-2), the final forging die upper punch (C-14) and the elastic locking device down to the When the final forging die has an effective working stroke, the inner cone surface of the final forging die locking sleeve (C-24) can be completely contacted with the outer cone surfaces of the left and right half-dies (C-16, C-17) of the final forging die, thereby locking. Tighten the left and right halves of the final forging die (C-16, C-17); when the final forging die upper template (C-1) continues to descend, the final forging die compression spring (C-20) is continuously compressed, and the final forging die The die locking sleeve (C-24) remains stationary, the locking force increases, the upper convex block of the final forging die (C-2) and the upper punch of the final forging die (C-14) continue to descend, and the final forging die is punched upward. The head (C-14) goes deep into the cavity of the final forging mold and the lower pinion position cavity of the blank is filled with material. The upper convex block (C-2) and the upper punch (C-14) of the final forging die continue to descend. , until the upper convex module (C-2) of the final forging die is in contact with the left and right half-dies (C-16, C-17) of the final forging die, the final forging of the blank is completed. 2. The vertical forging die assembly for double-coupling tooth blanks with deep blind holes according to claim 1, characterized in that: in the collecting die, the upper concave module (A-2) of the collecting die is provided with The upper end head is inserted into the upper template (A-1) of the collecting die, and the upper module pressing ring (A-6) of the collecting die is pressed on the step surface of the upper concave module (A-2) of the collecting die, and Locking on the upper template (A-1) of the aggregate die by screws, so as to realize the installation of the upper concave module (A-2) of the aggregate die on the upper template (A-1) of the aggregate die; the aggregate die The lower concave module (A-4) has a lower end head, and the lower end head is inserted into the lower concave die positioning seat (A-5) of the aggregate mold, and the lower concave mold positioning seat (A-5) of the aggregate mold is inserted into the lower template of the aggregate mold In (A-3), the pressing ring (A-7) of the lower module of the aggregate die is pressed against the stepped surface of the lower concave module of the aggregate die (A-4), and is locked on the lower template (A-4) of the aggregate die by screws. A-3), so as to realize the installation of the concave module (A-4) of the aggregate die on the lower template (A-3) of the aggregate die. 3. The vertical forging die assembly for double-coupling tooth blanks with deep blind holes according to claim 1, characterized in that: in the pre-forging die, the upper convex module (B-2) of the pre-forging die is provided outside There is a pre-forging die positioning sleeve (B-15), the bottom surface of the pre-forging die positioning sleeve (B-15) is higher than the bottom surface of the pre-forging die upper convex module (B-2), when the mold is closed, the pre-forging die is concave. The module (B-4) is inserted into the pre-forging die concave module (B-4), and the bottom surface of the pre-forging die positioning sleeve (B-15) is in contact with the top surface of the pre-forging die concave module (B-4). 4. The vertical forging die combination of double-coupling gear blanks with deep blind holes according to claim 3, characterized in that: in the pre-forging die, the upper punch (B-14), the pre-forging die Forging die upper protruding module (B-2) and pre-forging die positioning sleeve (B-15) both have upper end heads, which are assembled together from the inside to the outside through the upper end heads and then inserted into the pre-forging die upper template (B-1 ), the upper module clamping ring (B-6) of the pre-forging die is pressed on the step surface of the pre-forging die positioning sleeve (B-15), and locked on the pre-forging die upper template (B-1) by screws , so as to realize the installation of the upper convex module (B-2) of the pre-forging die on the upper template (B-1) of the pre-forging die; the lower concave module (B-4) of the pre-forging die is provided with a lower end head, which Insert into the lower concave die positioning seat (B-5) of the pre-forging die, insert the lower concave die positioning seat (B-5) of the pre-forging die into the lower template (B-3) of the pre-forging die, and insert the lower module clamping ring of the pre-forging die (B-7) Press on the step surface of the pre-forging die concave module (B-4), and lock it on the pre-forging die lower template (B-3) by screws, so as to realize the pre-forging die concave module (B-3) B-4) Installation on the lower template (B-3) of the pre-forging die. 5. The vertical forging die combination for double-coupling gear blanks with deep blind holes according to claim 1, characterized in that: in the pre-forging die, the pre-forging die has a concave module (B-4) cavity The conical section between the cylindrical head and the large cylindrical head is divided into upper and lower sections, the angle α1 between the upper conical section and the horizontal plane is smaller than the angle α2 between the small conical section and the horizontal plane, and the two conical sections are rounded transitions. 6. The vertical forging die assembly for double-coupling tooth blanks with deep blind holes according to claim 1, characterized in that: in the final forging die, the final forging die has a convex block (C-2) The inner and outer split structure is adopted, including the upper punch main body (C-2a) of the final forging die and the upper punch casing (C-2b) of the final forging die, and the bottom surface of the upper punch casing (C-2b) of the final forging die is higher than The bottom surface of the upper punch body (C-2a) of the final forging die, when the die is closed, the upper punch body (C-2a) of the final forging die is inserted into the left and right halves of the final forging die (C-16, C-17) In between, the bottom surface of the upper punch casing (C-2b) of the final forging die is in contact with the top surfaces of the left and right halves (C-16, C-17) of the final forging die. 7. The vertical forging die combination of double coupling gear blanks with deep blind holes according to claim 6, characterized in that: in the final forging die, the upper punch (C-14) of the final forging die . The upper punch main body (C-2a) of the final forging die is equipped with an upper end, and the upper ends are assembled together from the inside to the outside and then inserted into the upper punch positioning seat (C-6) of the final forging die. The punch jacket (C-2b) on the die is pressed against the step surface of the punch body (C-2a) on the final forging die, and is locked on the punch positioning seat (C-6) on the final forging die by screws. The final forging die upper punch positioning seat (C-6) is locked on the final forging die upper template (C-1) by screws, so that the final forging die upper punch module (C-2) can be locked on the final forging die upper template (C-1). C-1) installation; the final forging die concave module (C-4) has a lower end head, the lower end head is inserted into the final forging die lower concave die positioning seat (C-5), the final forging die is concave The die positioning seat (C-5) is inserted into the lower template (C-3) of the final forging die, and the lower module clamping ring (C-7) of the final forging die is pressed against the stepped surface of the lower concave module (C-4) of the final forging die and lock it on the lower template (C-3) of the final forging die by screws, so as to realize the installation of the concave module (C-4) of the final forging die on the lower template (C-3) of the final forging die. 8. The vertical forging die assembly for double-coupling tooth blanks with deep blind holes according to claim 1, characterized in that: in the final forging die, the elastic locking device further comprises a final forging die locking device. Sleeve positioning plate (C-21) and final forging die sliding sleeve (C-22), the final forging die locking sleeve positioning plate (C-21) is fixedly sleeved outside the final forging die locking sleeve (C-24) , the final forging die locking sleeve positioning plate (C-21) is slidably installed on the final forging die sliding rod (C-19) through the final forging die sliding sleeve (C-22), and is locked and prevented from falling off by the nut, thereby realizing Sliding installation of the final forging die locking sleeve (C-24) on the final forging die sliding rod (C-19). 9. The vertical forging die combination for double-coupling tooth blanks with deep blind holes according to claim 1, characterized in that: in the final forging die, the final forging die opens and closes the cylinder (C-18) The front end of the final forging die is connected with the corresponding left and right half die (C-16, C-17) through the final forging die connecting block (C-23), and the rear end of the final forging die opening and closing cylinder (C-18) is fixed On the column of the "L" type final forging die cylinder mounting seat (C-15), the bottom plate of the final forging die cylinder mounting seat (C-15) is installed on the final forging die cylinder through the final forging die cylinder positioning seat (C-8). On the lower mold template (C-3). 10. The vertical forging die combination for double-coupling tooth blanks with deep blind holes according to claim 1, characterized in that: the ejector mechanisms in the aggregate die, the pre-forging die, and the final forging die all adopt The split structure includes a lower top block (9) and an ejector rod (10), the lower end of the lower top block (9) is provided with an anti-separation protrusion (9a), and the upper end of the ejector rod (10) abuts against the anti-separation protrusion On the lift (9a), the stroke range of the anti-falling protrusion (9a) is between the corresponding lower concave module and the lower cushion block.

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