CN114888149A

CN114888149A - Rapid edge trimming die and edge trimming process for axle housing body

Info

Publication number: CN114888149A
Application number: CN202210413309.8A
Authority: CN
Inventors: 刘德林; 胡党旺; 欧长高; 饶锐
Original assignee: Jiangxi Jiangling Chassis Co Ltd
Current assignee: Jiangxi Jiangling Chassis Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-08-12

Abstract

The invention relates to a quick axle housing body edging die and an edging process, wherein the edging die comprises an upper die structure and a lower die structure, the upper die structure comprises a die handle, an upper die plate and an edging upper die, the die handle is arranged in each corresponding fixing hole of the upper die plate in an interference fit manner, and the edging upper die is fixed on the bottom surface of the upper die plate; the lower die structure comprises a guide rod, an adjusting screw rod, an axle housing body, a movable trimming block, a spring, a trimming lower die and a lower die plate, wherein the guide rod is fixed in a guide rod hole corresponding to the trimming lower die in an interference fit manner. The spring is arranged in a spring mounting hole corresponding to the trimming lower die, the movable trimming block is connected with the spring, and the movable trimming block is in clearance fit with the guide rod; the adjusting screw penetrates through an inner hole of the spring to connect the movable trimming block with the lower template, and the trimming lower die is fixed on the upper surface of the lower template. The die adopts an internal guide and floating type double-sided pressing structure, and can simultaneously carry out edge trimming processing on two sides of the axle housing body by a single person through a novel rapid edge trimming process, so that the product flatness is improved.

Description

Rapid edge trimming die and edge trimming process for axle housing body

Technical Field

The invention relates to the field of dies, in particular to a quick edge trimming die and an edge trimming process for an axle housing body.

Background

The axle housing body of the automobile drive axle is used for supporting and protecting a main speed reducer, a differential mechanism, a half shaft and the like. The automobile has the functions of bearing the mass of the automobile, bearing all-directional reaction force, bending moment and moment during braking transmitted by the driving wheel when the automobile runs, transmitting the reaction force, the bending moment and the moment to the frame through the suspension, and the like. In order to adapt to the torque of the driving wheel under different loads, the integral axle housing is usually a special-shaped body with a variable cross section from two ends to the center, and is usually manufactured by splicing and butt-welding an upper axle housing body and a lower axle housing body.

The chinese patent with publication number CN201610567025.9 discloses an automobile drive axle housing body side cut mould, and the positioner in the middle of the side cut of this mould includes side cut inner circle locating piece, connecting rod and connecting rod pressure spring, and two rows of even symmetries are equipped with a plurality of connecting rod pressure springs about the side cut terrace die fixing base, connecting rod pressure spring top is equipped with upper and lower sliding connection's connecting rod, the connecting rod left and right sides respectively is equipped with side cut inner circle locating piece in step, both ends are equipped with the side cut locating piece around the inside of side cut inner circle locating piece, form axle housing body side cut location die cavity between side cut clamping device's clamping part and the side cut locating piece at side cut inner circle locating piece and both ends.

The axle housing body is formed by stamping before welding. In the traditional stamping process, a blank is formed and shaped, and then a workpiece with a corresponding shape is obtained through the working procedures of trimming and the like. In the production process, the forming and shaping are large dies, a large-tonnage hydraulic machine is needed for pressing and continuously maintaining the pressure for a certain time, the production efficiency is low, the time consumption of batch production is long, and in addition, the investment cost of the dies, equipment, personnel and the like is also high. Therefore, the design and manufacture of a novel rapid trimming die and a trimming process ensure the product quality, improve the production efficiency and reduce the cost investment, which is very important.

Disclosure of Invention

One of the purposes of the invention is to provide a quick axle housing body trimming die. The trimming die is a small die and can be used for rapidly processing the large flange face of the axle housing body by being installed on a common small-sized press.

The invention also provides a novel axle housing body large flange face trimming process, which uses the axle housing body rapid trimming die to replace the traditional process of performing double-person operation on a large hydraulic press through a large trimming die to perform trimming processing by using a single-person operation in a common small press.

One of the objects of the invention is achieved by:

a quick edge trimming die for an axle housing body comprises an upper die structure and a lower die structure, wherein the upper die structure comprises a die handle, an upper die plate and an edge trimming upper die, the die handle is arranged in each corresponding fixing hole of the upper die plate in an interference fit manner, and the edge trimming upper die is fixed on the bottom surface of the upper die plate;

the lower die structure comprises a guide rod, an adjusting screw rod, an axle housing body, a movable trimming block, a spring, a trimming lower die and a lower die plate, wherein the guide rod is fixed in a guide rod hole corresponding to the trimming lower die in an interference fit mode. The spring is arranged in a spring mounting hole corresponding to the trimming lower die, the movable trimming block is connected with the spring, and the movable trimming block is in clearance fit with the guide rod;

the adjusting screw penetrates through the inner hole of the spring to connect the movable trimming block with the lower template, and the trimming lower die is fixed on the upper surface of the lower template.

Furthermore, the trimming upper die is provided with two guide holes at corresponding positions, and the guide holes are in clearance fit with the guide rods.

Furthermore, the bottom surface of the trimming upper die is a working surface, and the upper edge of the workpiece is trimmed.

Furthermore, the top surface of the trimming lower die is a working surface, and the bottom edge of the workpiece is trimmed.

Furthermore, the upper and lower working parts of the movable trimming block are respectively provided with corresponding pressing angles which are respectively matched with the trimming upper die and the trimming lower die.

Furthermore, a guide rod hole corresponding to the movable edge trimming block is in clearance fit with the guide rod, and the movable edge trimming block moves up and down along the guide rod.

Further, the maximum thickness of the movable edge trimming block is smaller than the width of the inner cavity of the workpiece.

Furthermore, the adjusting screw rod adjusts the height of the movable edge trimming block by adjusting the compression amount of the spring.

The second technical scheme of the invention is realized as follows:

the trimming process of the axle housing body quick trimming die comprises the following steps:

step 1: mounting the trimming die on a press machine;

step 2: placing the workpiece after the forming procedure into a movable trimming block, and positioning the workpiece according to the internal shape of the workpiece;

and step 3: starting the press, enabling the upper die plate to move downwards along with the upper workbench of the machine tool, enabling the edge trimming upper die to press the upper surface of the workpiece, continuously driving the movable edge trimming block downwards until the lower surface of the workpiece contacts the edge trimming lower die, and pressing until all working surfaces are matched with the upper surface and the lower surface of the axle housing body in a contact manner, so that edge trimming pressing of two surfaces is completed;

and 4, step 4: after the trimming of the workpiece is processed, the upper slide block on the press machine drives the upper die structure of the die to return, and at the moment, the movable trimming block bounces back under the action of the spring to take the workpiece out of the die;

and 5: and (4) repeating the operations from the step 2 to the step 4, and pressing the whole edge of the lower workpiece.

The invention has the beneficial effects that: the die adopts an internal guide and floating type double-sided pressing structure, and the die can be operated by a single person on a common small-sized press through a novel rapid edge trimming process, so that the edge trimming processing of the two sides of the axle housing body can be simultaneously carried out, and the product flatness is improved. The novel process replaces the traditional large-tonnage large-mold integral shaping process, simplifies the mold structure, reduces the investment of equipment, molds, manpower and other resources, obviously improves the efficiency, is simple in mold and manufacture, and effectively saves the production cost.

The middle positioning device for trimming in CN201610567025.9 adopts a positioning block connected with a connecting rod bolt, and forms a floating structure through a compression spring, and the floating structure is movable relative to a trimming male die fixing seat. The mode structure is more complicated, and preparation and change are inconvenient, and the clearance fit of connecting rod and side cut terrace die fixing base, both sides locating piece and side cut terrace die fixing base etc. department leads to the accumulative deviation great, and bolt fastening often easily becomes flexible in addition, causes floating structure pine phenomenon, so it must cooperate closing device such as cylinder to carry out the top tight enhancement.

The invention uses the sliding horizontal combination of the guide rod and the hole, the position and the precision of the whole body can be effectively ensured by a single structure, the manufacture is simple, the maintenance, the adjustment and the replacement are convenient, and the quick switching can be realized.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the lower die structure of the present invention;

FIG. 3 is a schematic structural diagram of the movable edge block of the present invention;

FIG. 4 is a schematic structural view of an axle housing body machined in accordance with the present invention.

Description of reference numerals: the axle housing comprises a die handle 1, an upper die plate 2, a trimming upper die 3, a guide rod 4, an adjusting screw rod 5, an axle housing body 6, a movable trimming block 7, a spring 8, a trimming lower die 9, a lower die plate 10 and an axle housing body 11.

Detailed Description

The present invention can be embodied by technical solutions, and the present invention can be further described by the following examples, however, the scope of the present invention is not limited to the following examples.

As shown in fig. 1 to 4, a quick whole limit mould of axle housing body, including last mould structure and lower mould structure, go up the mould structure and include mould handle 1, cope match-plate pattern 2 and whole limit and go up mould 3, mould handle 1 attaches together in the fixed orifices that cope match-plate pattern 2 respectively corresponds through interference fit. The trimming upper die 3 is fixed on the bottom surface of the upper die plate 2 through bolts and pins according to the corresponding position.

The lower die structure of the die comprises a guide rod 4, an adjusting screw rod 5, an axle housing body 6, a movable trimming block 7, a spring 8, a trimming lower die 9 and a lower die plate 10, wherein the guide rod 4 is fixed in a guide rod hole corresponding to the trimming lower die 9 in an interference fit mode. The spring 8 is arranged in a spring mounting hole corresponding to the trimming lower die 9. The movable edge-finishing block 7 is arranged on the spring 8 and is in clearance fit with the guide rod 4 through a corresponding hole position. The adjusting screw 5 penetrates through an inner hole of the spring 8 to connect the movable trimming block 7 with the lower template 10. The trimming lower die 9 is fixed on the upper surface of the lower template 10 through bolts and pins. The axle housing body 6 is a workpiece and is placed into the movable trimming block 7 before work, and the large flange surfaces on the two sides can be pressed.

Wherein, the center of the movable edge-trimming block 7 is provided with two guide holes which form sliding clearance fit with the guide rod 4, and the movable edge-trimming block 7 can move up and down along the guide rod 4. The upper surface and the lower surface of the movable edge trimming block 7 are symmetrical in shape, each surface is divided into two areas, the front end of each area is an edge trimming pressing area, and the area forms a certain negative angle from the edge part to the center and is mainly used for pressing compensation rebound of a workpiece; the rear end is a planar support area for supporting the spring and cooperating with the guide rod 4 for mutual movement. After the spring is placed in a spring hole corresponding to the trimming lower die 9, the movable trimming block 7 can directly slide in through the guide rod 4 in a matched mode, the spring 8 supports the lower die structure to be placed in a flat floating mode, then the spring 8 is tightened through the adjusting screw rod 5, and the height of the movable trimming block 7 is adjusted.

The bottom surface of the trimming upper die 3 is a trimming pressing surface of the upper edge of the workpiece, and a pressing area forms a corresponding pressing negative angle from the edge part to the center; the upper surface of the trimming lower die 9 is a trimming pressing surface of the lower edge of the workpiece, and a pressing area forms a corresponding positive pressing angle from the edge part to the center.

The floating double-sided pressing structure is characterized in that before the mold is closed, the movable trimming block 7 floats in the lower mold under the supporting action of the spring 8 and the guiding action of the guide rod 4, a workpiece can be conveniently sleeved at the moment, and the upper edge and the lower edge of the workpiece are respectively arranged on the upper surface and the lower surface of the movable trimming block 7; after the mould is closed, the trimming upper mould 3 drives the workpiece and the movable trimming block 7 to move downwards together, finally, the lower edge of the workpiece is completely attached to the upper surface of the trimming lower mould 9, the bottom surface of the trimming upper mould 3 compresses the upper edge of the workpiece to be attached to the upper surface of the movable trimming block 7, and thus trimming pressing on two surfaces is completed.

This floating two-sided pressing structure adopts guide arm direction and spring-loaded support, under the accurate prerequisite in assurance position, has simplified the structure, and highly convenient adjustment, the whole limit suppression has simultaneously been guaranteed on two sides to the uniformity on work piece both sides and improves work efficiency.

In addition, the trimming upper die 3 is provided with two guide holes at corresponding positions, and the guide holes are in clearance fit with the guide rods 4 to play a certain role in guiding the upper part and the lower part of the die.

The bottom surface of the trimming upper die 3 is a working part, and the trimming upper die is provided with a certain pressing angle according to the trimming requirement, and mainly plays a role in trimming the upper edge of a workpiece.

The upper surface of the trimming lower die 9 is a working part, the shape of the trimming lower die is provided with a certain pressing angle according to the trimming requirement, and the trimming lower die mainly plays a role in trimming the bottom edge of a workpiece.

The upper and lower working positions of the movable trimming block 7 are provided with corresponding pressing angles which are respectively matched with the trimming upper die 3 and the trimming lower die 9.

The guide rod hole corresponding to the movable edge-trimming block 7 is in clearance fit with the guide rod 4, and the movable edge-trimming block 7 can move up and down along the guide rod 4.

The maximum thickness of the movable trimming block 7 is smaller than the width of the inner cavity of the workpiece, so that the workpiece can be freely taken and placed before and after pressing.

The adjusting screw 5 can adjust the compression amount of the spring 8, thereby adjusting the height of the movable edge block 7.

Before the quick whole limit mould work of axle housing body, activity whole limit piece 7 is under adjusting screw 5 and spring 8's regulation, and its height should be suitable, when guaranteeing that axle housing body 6 can freely put into the mould, adjusting screw 5 does not interfere with other on top.

Further, an edge trimming process of the axle housing body quick edge trimming die comprises the following steps:

step 1: mounting the trimming die on a press machine;

step 2: placing the workpiece after the forming process into the movable trimming block 7, and positioning the workpiece through the inner shape of the workpiece;

and step 3: starting a press machine, enabling an upper template 2 to move downwards along with a workbench on a machine tool, enabling an edge-trimming upper die 3 to press the upper surface of a workpiece, continuously driving a movable edge-trimming block 7 downwards to move downwards until the lower surface of the workpiece contacts an edge-trimming lower die 9, and pressing until all working surfaces are in contact fit with the upper surface and the lower surface of an axle housing body, so that edge-trimming pressing of two surfaces is completed;

and 4, step 4: after the trimming of the workpiece is processed, the upper slide block of the press drives the upper die structure of the die to return, and at the moment, the movable trimming block 7 bounces back under the action of the spring 8, so that the workpiece (the axle housing body 11) is taken out of the die;

The die adopts an internal guide and floating type double-sided pressing structure, and the die can be operated by a single person on a common small-sized press through a novel rapid edge trimming process, so that the edge trimming processing of the two sides of the axle housing body can be simultaneously carried out, and the product flatness is improved. The novel process replaces the traditional large-tonnage large-mold integral shaping process, simplifies the mold structure, reduces the investment of equipment, molds, manpower and other resources, obviously improves the efficiency, is simple in mold and manufacture, and effectively saves the production cost.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A quick axle housing body trimming die comprises an upper die structure and a lower die structure, and is characterized in that the upper die structure comprises a die handle (1), an upper die plate (2) and trimming upper dies (3), the die handle (1) is assembled in each corresponding fixing hole of the upper die plate (2) through interference fit, and the trimming upper dies (3) are fixed on the bottom surface of the upper die plate (2);

the lower die structure comprises a guide rod (4), an adjusting screw rod (5), an axle housing body (6), a movable trimming block (7), a spring (8), a trimming lower die (9) and a lower die plate (10), wherein the guide rod (4) is fixed in a guide rod hole corresponding to the trimming lower die (9) in an interference fit manner, the spring (8) is arranged in a spring mounting hole corresponding to the trimming lower die (9), the movable trimming block (7) is connected with the spring (8), and the movable trimming block (7) is in clearance fit with the guide rod (4);

the adjusting screw rod (5) penetrates through an inner hole of the spring (8) to connect the movable trimming block (7) with the lower template (10), and the trimming lower die (9) is fixed on the upper surface of the lower template (10).

2. The axle housing body rapid trimming die according to claim 1, wherein the trimming upper die (3) is provided with two guide holes at corresponding positions, and the guide holes are in clearance fit with the guide rods (4).

3. The axle housing body rapid trimming die as claimed in claim 1, wherein the bottom surface of the trimming upper die (3) is a working surface, and the upper edge of a workpiece is trimmed.

4. The axle housing body rapid trimming die according to claim 1, wherein the top surface of the trimming lower die (9) is a working surface for trimming the bottom edge of a workpiece.

5. The axle housing body rapid trimming die according to claim 1, wherein the upper and lower working parts of the movable trimming block (7) are provided with corresponding pressing angles which are respectively matched with the trimming upper die (3) and the trimming lower die (9).

6. The axle housing body rapid trimming die according to claim 1, wherein the guide rod hole corresponding to the movable trimming block (7) is in clearance fit with the guide rod (4), and the movable trimming block (7) moves up and down along the guide rod (4).

7. The axle housing body rapid trimming die according to claim 1, wherein the maximum thickness of the movable trimming block (7) is smaller than the width of the inner cavity of the workpiece.

8. The axle housing body rapid trimming die according to claim 1, wherein the adjusting screw (5) adjusts the height of the movable trimming block (7) by adjusting the compression amount of the spring (8).

9. The axle housing body rapid trimming die as claimed in claim 1, wherein before the die is closed, the movable trimming block (7) floats in the lower die under the supporting action of the spring (8) and the guiding action of the guide rod (4), at the moment, a workpiece can be conveniently sleeved, and the upper edge and the lower edge of the workpiece are respectively arranged on the upper surface and the lower surface of the movable trimming block (7); after the die is closed, the trimming upper die (3) drives the workpiece and the movable trimming block (7) to move downwards together, finally, the lower edge of the workpiece is completely attached to the upper surface of the trimming lower die (9), the bottom surface of the trimming upper die (3) compresses the upper edge of the workpiece to be attached to the upper surface of the movable trimming block (7), and thus trimming pressing on two surfaces is completed.

10. The trimming process of the axle housing body quick trimming die according to claim 1, characterized by comprising the following steps:

step 1: mounting the trimming die on a press machine;

step 2: putting the workpiece after the forming procedure into a movable trimming block (7), and positioning the workpiece through the inner shape of the workpiece;

and step 3: starting a press machine, enabling an upper template (2) to move downwards along with a workbench on a bed, pressing an edge trimming upper die (3) onto a workpiece, continuously driving a movable edge trimming block (7) downwards until the lower surface of the workpiece contacts an edge trimming lower die (9), and pressing until all working surfaces are in contact fit with the upper surface and the lower surface of an axle housing body to complete edge trimming pressing of two surfaces;

and 4, step 4: after the trimming of the workpiece is processed, the upper slide block on the press machine drives the upper die structure of the die to return, and at the moment, the movable trimming block (7) bounces back under the action of the spring (8) to take the workpiece out of the die;