CN115647211A - Scratch-free roller type bending die for automobile rear axle shock absorber support and machining process of scratch-free roller type bending die - Google Patents

Abstract

The invention relates to a scratch-free roller type bending die for a shock absorber bracket of an automobile rear axle and a processing technology thereof, wherein the roller type bending die comprises an upper half part and a lower half part, and the upper half part comprises: the device comprises a die handle, an upper die plate, an ejector rod, an upper base plate, a guide sleeve, an upper fixing plate and a bending male die; the mould the latter half includes: the guide post, bottom plate, side guide plate, locating pin, roof, lower bolster, ejector pin, roller bearing and crooked die. After the die is used, the relative sizes of the bending opening size of a product, the coaxiality of two bending holes and the like are all in a tolerance range, the processing technology is optimized into one process by three traditional processes (namely bending, shaping and manual polishing), the production efficiency is improved by 2.6 times, the die adopts a boss and a groove for automatically correcting the gap of the die, the bending male die is additionally provided with a protruding guide boss and a bending female die which are provided with a roller, an oil storage tank and the like, the service life of the die is prolonged by 7 times, and the product quality is improved (the product is bent without scratches).

Description

Scratch-free roller type bending die for automobile rear axle shock absorber support and machining process of scratch-free roller type bending die

Technical Field

The invention belongs to the field of mechanical equipment, relates to a manufacturing die for a shock absorber support, and particularly relates to a scratch-free roller type bending die for an automobile rear axle shock absorber support and a processing technology thereof, in particular to a scratch-free roller type bending technology.

Background

Automobile rear axle bumper shock absorber support welds the dress on automobile rear axle housing body, the main effect is the fastening installation automobile bumper shock absorber, the mounted position of control bumper shock absorber, in order to realize the shock attenuation effect control of vehicle when going, guarantee stability and the travelling comfort during the vehicle is gone, consequently the crooked opening size of bumper shock absorber support and the axiality in two holes after the bending require higher, especially intensity (including work piece intensity and welding strength itself promptly), so the product requires to have the fish tail to influence intensity after the bending, and the welding seam of bumper shock absorber support and each welding department of rear axle housing body will be less than or equal to 0.8mm, just so can guarantee the intensity of bumper shock absorber support. Because the workpiece belongs to a thick plate (namely the thickness of the plate is 4.5 mm), if the workpiece is bent according to the structure of a traditional U-shaped part bending die (namely the workpiece is in sliding friction with the lower part of the die in the bending process, the generated friction force is large), the pull marks and scratches on the two bent side surfaces of the workpiece are inevitably caused, and in addition, the gap of the die is completely controlled by the manual skill of a bench worker according to the design thought of the traditional bending die, so the manufacturing precision of the die is difficult to ensure. Based on the optimization consideration of the production process in the prior art, the invention designs a novel scratch-free roller type bending die for the shock absorber support to improve the product quality and the production efficiency, which is very necessary.

Disclosure of Invention

One of the purposes is to provide a scratch-free roller type bending die for a shock absorber support of an automobile rear axle, wherein a boss and a groove which are used for automatically correcting a die gap are adopted, a protruding guide boss and a abdicating groove are additionally arranged on a bending male die, and the bending female die is provided with a roller, an oil storage groove and other structures to prolong the service life of the die and improve the product quality. The scratch-free roller type bending die is arranged on a press machine with a lower ejection cylinder to perform bending process on the shock absorber support.

The invention aims to design a non-scratch roller type bending die using a rear axle shock absorber bracket of an automobile to replace the traditional process of three processes (namely a bending process, a shaping process and a manual polishing and scratching process), in particular to a process of bending a product without scratch when a roller type bending process is adopted.

One of the objects of the invention is achieved by:

the utility model provides a car rear axle bumper shock absorber support does not have fish tail roller formula bending die, includes mould first half and mould the latter half, and the mould first half includes: the device comprises a die handle, an upper die plate, an ejector rod, an upper base plate, a guide sleeve, an upper fixing plate and a bending male die;

the mould the latter half includes: the device comprises a guide pillar, a lower fixing plate, a side guide plate, a positioning pin, a top plate, a lower base plate, a lower template, an ejector rod, a rolling shaft and a bending female die;

the bending male die is arranged in a fixed cavity of an upper fixing plate in an interference fit manner, and is connected with an upper backing plate from the upper end face through a bolt;

two side guide plates are arranged on the left side and the right side of a fixed cavity of a lower fixed plate in an interference fit manner and are respectively connected with the lower fixed plate through bolts from the side edges;

the guide pillar is installed in guide pillar holes on two sides of the lower template in an interference fit mode, the lower template and the lower cushion plate are connected with the lower fixing plate through bolts and positioning pins, the ejector rods are placed in ejector rod holes corresponding to the lower cushion plate and the lower template in a clearance fit mode, the positioning pins are installed in positioning pin fixing holes corresponding to the top plates in an interference fit mode, and the top plates are placed in a cavity formed by the side guide plates and the bending female dies in a clearance fit mode.

Furthermore, the bending female die is provided with a roller shaft hole, and the clearance between the roller and the two sides of the roller shaft hole of the bending female die is 0.06-0.08 mm.

Furthermore, the bending female die is additionally provided with an oil filling hole and an oil storage tank, and lubricating oil is filled into the oil storage tank from the oil filling hole in the production process of the die.

Furthermore, the left end and the right end of the bending male die are respectively provided with a boss for automatically correcting the bending clearance, the side guide plate is provided with a groove for automatically correcting the bending clearance, and the double-sided clearance between the boss of the bending male die and the middle groove of the side guide plate is 0.08-0.10 mm.

Furthermore, the upper and lower sides of the bending convex die are respectively provided with a abdicating groove with the depth of 0.5 mm.

Furthermore, the bending female die is embedded, the lower fixing plate is integral, and the bending female die is fixed in the lower fixing plate through interference fit.

Furthermore, the left end and the right end of the top plate are respectively provided with a guide boss, and the clearance between the guide bosses and the two sides of the middle groove of the side guide plate is 0.14-0.16 mm.

Furthermore, the double-sided clearance between the guide pillar and the guide sleeve is 0.14-0.16 mm.

Further, die steel T10A is selected for the side guide plate and the top plate, and the quenching hardness is HRC 50-55.

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

step 1: mounting a scratch-free roller type bending die of the automobile rear axle shock absorber support on a 100T press with a lower ejection cylinder;

step 2: filling the oil storage tank with lubricating oil from an oil filling hole of the bending female die;

and 3, step 3: placing the workpiece of the prefabricated shock absorber bracket after the processes of blanking, blanking and punching on the upper surface of the top plate, and positioning two inner holes of the workpiece by using positioning pins;

and 4, step 4: starting a press machine, enabling an upper die plate to move downwards along with an upper machine table, firstly guiding bosses, of which two ends of the lower end face of a bending male die are higher than bending working parts, into middle grooves of side guide plates to ensure uniform bending gaps, then pressing a workpiece tightly under the action of a lower ejection cylinder by the bending working parts of the bending male die and a top plate, and when the workpiece is in contact with an upper rolling shaft and a lower rolling shaft, enabling the workpiece to stably enter bending cavities of the upper bending female die and the lower bending female die by rolling the rolling shafts in rolling shaft holes of the bending female die until the lower surface of the top plate is in contact with the upper surface of a lower backing plate, so that the workpiece is bent in cavities among the bending male die, the rolling shafts, the bending female die and the top plate;

and 5, step 5: after the workpiece is bent, the acting force of a top plate of a jacking cylinder below a machine tool props against the workpiece and drives the upper half part of the die to return along with an upper sliding block of a press machine, then a material beating mechanism of a workbench on the press machine drives a material beating rod to slide downwards to beat the workpiece, and then an auxiliary tool is used for taking out the workpiece and putting the workpiece into a material box;

and 6, step 6: and (5) repeating the operations from the step (3) to the step (5) to manufacture the lower workpiece.

The invention has the beneficial effects that: 1. the upper and lower parts of the die are provided with a convex and concave platform for automatically correcting the bending clearance, so that the uniformity of the clearance between the upper die and the lower die is not controlled by the manual skill of a bench worker, but is ensured by the machining precision of a machine tool;

2. the bending female die of the lower part of the die is provided with a rolling shaft and an oil storage tank, so that the bending is changed from the traditional sliding friction into rolling friction, and the friction force generated during bending is reduced, thereby ensuring that the workpiece is not scratched when bent;

after the die is used, the relative sizes of the bending opening size of a product, the coaxiality of two bending holes and the like are in a tolerance range, the processing technology is optimized from three traditional procedures (namely bending, shaping and manual polishing) into one procedure, the production efficiency is improved by 2.6 times, the die adopts a boss and a groove for automatically correcting the gap of the die, the bending male die is additionally provided with a protruding guide boss and a bending female die which are provided with a rolling shaft, an oil storage tank and the like, the service life of the die is prolonged by 7 times, the non-scratch roller type bending technology is adopted, the product quality is improved (namely, the product is not scratched after being bent), and the production cost is reduced.

Drawings

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

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

FIG. 3 is a schematic diagram of the right-side view of the mold of the present invention;

FIG. 4 is a schematic view of the shock absorber mount constructed according to the present invention;

FIG. 5 is a schematic view of the curved cavity configuration of the inventive mold;

FIG. 6 is a schematic view of the side guide structure of the inventive die;

FIG. 7 is a schematic view of the top plate structure of the inventive mold;

fig. 8 is a schematic view of the bending punch configuration of the inventive die.

Description of reference numerals: the bending die comprises a die shank 1, an upper die plate 2, an ejector rod 3, an upper backing plate 4, a guide sleeve 5, an upper fixing plate 6, a bending male die 7, a guide pillar 8, a lower fixing plate 9, a side guide plate 10, a positioning pin 11, a top plate 12, a lower backing plate 13, a lower die plate 14, an ejector rod 15, a rolling shaft 16, a bending female die 17, a guide boss 18, a rolling shaft hole 19, an oil filling hole 20, an oil storage tank 21, a abdicating tank 22 and a groove 23 for automatically correcting bending gaps.

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 8, a roller type bending mold for a shock absorber support of a rear axle of an automobile without scratches is divided into an upper half and a lower half, and the upper half includes: die shank 1, cope match-plate pattern 2, ejector beam 3, upper padding plate 4, guide pin bushing 5, upper mounting plate 6 and crooked terrace die 7, the latter half of mould includes: the device comprises a guide post 8, a lower fixing plate 9, a side guide plate 10, a positioning pin 11, a top plate 12, a lower backing plate 13, a lower template 14, a top rod 15, a rolling shaft 16 and a bending female die 17. The method is characterized in that: the bending male die 7 is arranged in a fixed cavity of an upper fixing plate 6 in an interference fit mode and is connected with an upper backing plate 4 from the upper end face through a bolt, a die shank 1 is arranged in a die shank hole of an upper die plate 2 in the interference fit mode, a guide sleeve 5 is arranged in guide sleeve holes in two sides of the upper die plate 2 in the interference fit mode, the upper die plate 2 and the upper backing plate 4 are connected with the upper fixing plate 6 through bolts and positioning pins, and a knockout pin 3 is directly placed in corresponding knockout pin holes of the die shank 1, the upper backing plate 4 and the bending male die 7 in a clearance fit mode; two side guide plates 10 are arranged on the left side and the right side of a fixing cavity of a lower fixing plate 9 in an interference fit mode and are connected with the lower fixing plate 9 through bolts from the side edges respectively, two rolling shafts 16 are directly arranged in rolling shaft holes of bending female dies 17 respectively in a clearance fit mode, the two bending female dies 17 are arranged on the upper side and the lower side of the fixing cavity of the lower fixing plate 9 in the interference fit mode and are connected with the lower fixing plate 9 through bolts from the side edges respectively, guide columns 8 are arranged in guide column holes on the two sides of a lower die plate 14 in the interference fit mode, the lower die plate 14 and a lower die plate 13 are connected with the lower fixing plate 9 through bolts and positioning pins, three ejector rods 15 are directly arranged in ejector rod holes corresponding to the lower die plate 13 and the lower die plate 14 in the clearance fit mode, two positioning pins 11 are arranged in positioning pin fixing holes corresponding to a top plate 12 in the interference fit mode, and the top plate 12 is directly arranged in a cavity formed by the side guide plates 10 and the bending female dies 17 in the clearance fit mode.

The bending female die 17 is provided with a roller shaft hole 19, and the double-side gap between the roller 16 and the roller shaft hole 19 of the bending female die 17 is 0.06-0.08 mm, so that the precision of the die can be ensured, the roller 16 can smoothly rotate in the roller shaft hole of the bending female die 17, the traditional sliding friction between a workpiece and the lower part of the die in the bending process is changed into rolling friction, the friction force generated in the bending process is reduced, the workpiece is ensured to be bent without scratches, and the service life of the die can be prolonged (namely the bending female die is not easy to be roughened).

The bending die 17 is additionally provided with an oil filling hole 20 and an oil storage tank 21, and lubricating oil is filled in the oil filling hole 20 to the oil storage tank 21 in the mold production process, so that the rolling shaft 16 can be lubricated, the surface of a workpiece can be lubricated, and the workpiece is guaranteed to be bent without scratches.

The left end and the right end of the bending male die 7 of the upper die part are respectively provided with a boss for automatically correcting the bending clearance, the side guide plate 10 of the lower die part is provided with a groove 23 for automatically correcting the bending clearance, and the clearance between the boss of the bending male die 7 and the double surfaces of the middle groove of the side guide plate 10 is 0.08-0.10 mm, so that the uniformity of the bending clearance of the upper die and the lower die is not controlled by the manual skill of a bench worker, but is ensured by the processing precision of a machine tool. In addition, the bosses of the two ends of the lower end face of the bending male die 7 for automatically correcting the bending clearance are 10mm higher than the bending working position of the bending male die 7, so that when the working position of the bending male die 7 is not contacted with a product in the production of the die, the bosses protruding from the two ends of the lower end face of the bending male die 7 enter the middle groove of the side guide plate 10 for guiding, the phenomenon that the upper die and the lower die move to influence the uniformity of the bending clearance of the die can be prevented, and the product quality and the service life of the die are improved.

The upper side and the lower side of the bending male die 7 are respectively provided with a 0.5mm deep abdicating groove 22 (namely the height of the effective bending working part of the bending male die 7 is 20 mm), and because the bending edge of the product is high, the rebound is large during bending, so that the rebound generated by bending the workpiece can be reduced, and the bending opening size of the product can meet the technical requirements.

The bending female die 17 is embedded, the lower fixing plate 9 is integral, and the bending female die 17 is fixed in the lower fixing plate 9 through interference fit, so that the material cost of the bending female die 17 can be saved, the die maintenance is convenient, the strength of the bending female die 17 can be improved, and the service life of the die is prolonged.

The left end and the right end of the top plate 12 are respectively provided with a guide boss 18, and the clearance between the guide bosses and the two sides of the middle groove of the side guide plate 10 is 0.14-0.16 mm, so that the positioning accuracy of the top plate 12 is ensured, the coaxiality of two holes of a bent product is ensured, and the top plate 12 runs smoothly up and down.

The double-sided clearance between the guide post 8 and the guide sleeve 5 is 0.14-0.16 mm, the die steel T10A is selected for the side guide plate 10 and the top plate 12, and the quenching hardness is HRC 50-55, so that the wear resistance of the side guide plate 10 and the top plate 12 is improved, and the service life of the whole die is prolonged.

The process for bending the shock absorber support without scratches by the aid of the scratch-free roller type bending die for the shock absorber support of the rear axle of the automobile comprises the following steps:

step 1: mounting a scratch-free roller type bending die of the automobile rear axle shock absorber support on a 100T press with a lower ejection cylinder;

step 2: the oil storage tank is filled with lubricating oil from an oil filling hole of the bending female die 17;

and 3, step 3: placing a workpiece of the prefabricated shock absorber bracket after blanking, blanking and punching processes on the upper surface of a top plate 12, and positioning two inner holes of the workpiece by using positioning pins 11;

and 4, step 4: starting a press machine, enabling an upper template 2 to move downwards along with an upper workbench of a machine, firstly guiding bosses of two ends of the lower end face of a bending male die 7 higher than bending working parts into a middle groove of a side guide plate 10 to ensure uniform bending gaps, then firstly pressing a workpiece by the bending working parts of the bending male die 7 and a top plate 12 under the action of a lower ejection cylinder, and when the workpiece is contacted with an upper rolling shaft 16 and a lower rolling shaft 16, enabling the rolling shaft 16 to roll in a rolling shaft hole of a bending female die 17 to enable the workpiece to stably enter a bending cavity of the upper bending female die 17 and the lower bending female die 17 until the lower surface of the top plate 12 is contacted with the upper surface of a lower backing plate 13, so that the workpiece is bent in a cavity among the bending male die 7, the rolling shaft 16, the bending female die 17 and the top plate 12;

and 5, step 5: after the workpiece is bent, the top plate 12 props against the workpiece by the acting force of a lower ejection cylinder of the machine tool and returns along with the upper half part of a mould driven by an upper sliding block of the press machine, then a material beating mechanism of an upper workbench of the press machine drives a material beating rod 3 to slide downwards to beat the workpiece, and then the workpiece is taken out by an auxiliary tool and put into a material box;

and 6, a step of: and (5) repeating the operations from the step 3 to the step 5 to manufacture the lower workpiece.

In conclusion, the upper part and the lower part of the die are provided with the convex table and the concave table which automatically correct the bending gap, so that the uniformity of the gap between the upper die and the lower die is not controlled by the manual skill of a bench worker, but is ensured by the machining precision of a machine tool; the bending female die of the lower part of the die is provided with a rolling shaft and an oil storage tank, so that the bending is changed from the traditional sliding friction into the rolling friction, the friction force generated during bending is reduced, and the workpiece is ensured to be bent without scratches.

After the mould is used, the relative sizes of the bending opening size of a product, the coaxiality of two bending holes and the like are in a tolerance range, the processing technology is optimized from three traditional procedures (namely bending, shaping and manual polishing) into one procedure, the production efficiency is improved by 2.6 times, the mould adopts a boss and a groove for automatically correcting the clearance of the mould, the bending male mould is additionally provided with a protruding guide boss and a bending female mould which are provided with a roller, an oil storage tank and other structures, the service life of the mould is prolonged by 7 times, and the product quality (namely, the product is not scratched after being bent) is improved by adopting a non-scratching roller type bending technology, so that the production cost is reduced.

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 various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a car rear axle bumper shock absorber support does not have fish tail roller formula bending die, includes mould first half and mould the latter half, and the mould first half includes: the device comprises a die handle (1), an upper die plate (2), an ejector rod (3), an upper backing plate (4), a guide sleeve (5), an upper fixing plate (6) and a bending male die (7);

the mould the latter half includes: the device comprises a guide post (8), a lower fixing plate (9), a side guide plate (10), a positioning pin (11), a top plate (12), a lower backing plate (13), a lower template (14), an ejector rod (15), a rolling shaft (16) and a bending female die (17);

the punching die is characterized in that the bending male die (7) is assembled in a fixing cavity of an upper fixing plate (6) in an interference fit manner and is connected with an upper backing plate (4) through a bolt from the upper end face, a die shank (1) is assembled in a die shank hole of an upper die plate (2) in the interference fit manner, a guide sleeve (5) is assembled in guide sleeve holes on two sides of the upper die plate (2) in the interference fit manner, the upper die plate (2) and the upper backing plate (4) are connected with the upper fixing plate (6) through bolts and positioning pins, and a material beating rod (3) is placed in material beating rod holes corresponding to the die shank (1), the upper backing plate (4) and the bending male die (7) in a clearance fit manner;

the two side guide plates (10) are assembled on the left side and the right side of a fixing cavity of the lower fixing plate (9) through interference fit and are respectively connected with the lower fixing plate (9) through bolts from the side edges, the two rolling shafts (16) are directly placed in rolling shaft holes of bending female dies (17) respectively through clearance fit, and the two bending female dies (17) are assembled on the upper side and the lower side of the fixing cavity of the lower fixing plate (9) through interference fit and are respectively connected with the lower fixing plate (9) through bolts from the side edges;

guide posts (8) are arranged in guide post holes in two sides of a lower template (14) in an interference fit mode, the lower template (14) and a lower cushion plate (13) are connected with a lower fixing plate (9) through bolts and positioning pins, ejector rods (15) are arranged in ejector rod holes corresponding to the lower cushion plate (13) and the lower template (14) in a clearance fit mode, positioning pins (11) are arranged in positioning pin fixing holes corresponding to a top plate (12) in an interference fit mode, and the top plate (12) is arranged in a cavity formed by a side guide plate (10) and a bending female die (17) in a clearance fit mode.

2. The automobile rear axle shock absorber support scratch-free roller type bending die as claimed in claim 1, wherein the bending female die (17) is provided with a roller hole, and a double-sided gap between the roller (16) and the roller hole of the bending female die (17) is 0.06-0.08 mm.

3. The automobile rear axle shock absorber support scratch-free roller type bending die as claimed in claim 1 or 2, characterized in that the bending female die (17) is additionally provided with an oil filling hole and an oil storage tank, and lubricating oil is filled into the oil storage tank from the oil filling hole in the die production process.

4. The automobile rear axle shock absorber support scratch-free roller type bending die as claimed in claim 3, wherein the left end and the right end of the bending male die (7) are respectively provided with a boss for automatically correcting the bending clearance, the side guide plate (10) is provided with a groove for automatically correcting the bending clearance, and the double-sided clearance between the boss of the bending male die (7) and the middle groove of the side guide plate (10) is 0.08-0.10 mm.

5. The automobile rear axle shock absorber support scratch-free roller type bending die as claimed in claim 3, characterized in that the upper and lower sides of the bending male die (7) are respectively provided with a 0.5mm deep abdication groove.

6. The automobile rear axle shock absorber support scratch-free roller type bending die as claimed in claim 3, characterized in that the bending female die (17) is embedded, the lower fixing plate (9) is integral, and the bending female die (17) is fixed in the lower fixing plate (9) through interference fit.

7. The scratch-free roller bending die for the shock absorber bracket of the rear axle of the automobile as claimed in claim 3, wherein the left end and the right end of the top plate (12) are respectively provided with a guide boss, and the double-sided clearance with the middle groove of the side guide plate (10) is 0.14-0.16 mm.

8. The automobile rear axle shock absorber support scratch-free roller type bending die as claimed in claim 3, characterized in that the double-sided clearance between the guide pillar (8) and the guide sleeve (5) is 0.14-0.16 mm.

9. The scratch-free roller bending die for the automobile rear axle shock absorber support is characterized in that the side guide plates (10) and the top plate (12) are made of die steel T10A, and the quenching hardness is HRC 50-55.

10. A process for performing scratch-free bending on a shock absorber support by using the scratch-free roller type bending die for the shock absorber support of the rear axle of the automobile as claimed in claim 1, which is characterized by comprising the following steps:

step 1: mounting the scratch-free roller type bending die of the automobile rear axle shock absorber support on a 100T press with a lower ejection cylinder;

step 2: the oil storage tank is filled with lubricating oil from an oil filling hole of the bending female die (17);

and 3, step 3: placing the prefabricated shock absorber support workpiece subjected to blanking, blanking and punching on the upper surface of a top plate (12), and positioning two inner holes of the workpiece by using positioning pins (11);

and 4, step 4: starting a press machine, enabling an upper template (2) to move downwards along with an upper workbench of a machine, firstly guiding bosses of two ends of the lower end face of a bending male die (7) higher than bending working positions into middle grooves of a side guide plate (10) to ensure uniform bending gaps, then firstly pressing a workpiece by the bending working positions of the bending male die (7) and a top plate (12) under the action of a lower ejection cylinder, and when the workpiece is contacted with an upper rolling shaft and a lower rolling shaft (16), rolling the rolling shaft (16) in a rolling shaft hole of a bending female die (17) to enable the workpiece to stably enter a bending cavity of the upper bending female die and the lower bending female die (17) until the lower surface of the top plate (12) is contacted with the upper surface of a lower backing plate (13), so that the workpiece is bent in a cavity among the bending male die (7), the rolling shaft (16), the bending female die (17) and the top plate (12);

and 5, step 5: after the workpiece is bent, the top plate (12) props against the workpiece by the acting force of a lower ejection cylinder of a machine tool and drives the upper half part of the die to return along with an upper sliding block of a press machine, then a material beating mechanism of an upper workbench of the press machine drives a material beating rod (3) to slide downwards to beat the workpiece, and then the workpiece is taken out by an auxiliary tool and put into a material box;

and 6, a step of: and (5) repeating the operations from the step 3 to the step 5 to manufacture the lower workpiece.

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