CN104139100B - Continuous forming process of nut plate and mold equipment thereof - Google Patents

Abstract

The invention relates to continuous forming die equipment of a nut plate, which comprises a drawing die assembly and a shaping die assembly, wherein the drawing die assembly sequentially comprises a primary punching die, a secondary punching die, a tertiary punching die, a primary drawing die, a secondary drawing die, a tertiary drawing die, a quaternary drawing die, a quintic drawing die, a heptatic drawing die, an octatic drawing die, a quaternary punching die, a nonatic drawing die, a decatic drawing die, an eleven-sided drawing die and a twelve-sided drawing die; the shaping die assembly sequentially comprises a primary shaping die, a secondary shaping die, a primary forming die, a character die, an inner hole trimming die, a primary trimming die, a secondary trimming die, a deburring die, a secondary forming die, a tertiary forming die and a cutting die. The invention adopts a continuous die assembly which is operated continuously and automatically, thereby not only greatly improving the processing efficiency, but also greatly improving the processing precision.

Description

A continuous forming process of nut plate and its mold equipment

Technical field:

The invention relates to the technical field of auto parts and processing thereof, in particular to a continuous molding die equipment for nut plates.

Background technique:

The existing nut plate processing process requires many independent molds to process separately. During the processing process, the material blocks must be disassembled and assembled continuously, which seriously affects the production efficiency of the product and also affects the processing accuracy of the product.

Invention content:

The object of the present invention is to overcome the above-mentioned shortcomings of the existing nut plate processing technology, and provide a continuous forming mold equipment for nut plates.

The technical solution adopted by the present invention to achieve its purpose is: a continuous molding die equipment for nut plates, which includes a drawing die assembly and a shaping die assembly, wherein the drawing die assembly includes a punching die, a punching die, Second punching die, three punching dies, one drawing die, two drawing dies, three drawing dies, four drawing dies, five drawing dies, six drawing dies, seven drawing dies , eight-time drawing die, four-time punching die, nine-time drawing die, ten-time drawing die, eleven-time drawing die, and twelve-time drawing die; Secondary shaping mould, primary forming mould, font mould, inner hole repairing mould, primary trimming mould, secondary trimming mould, pressing burr mould, secondary forming mould, tertiary forming mould, and cutting mould.

In the shaping mold assembly, a first empty step station is also provided before the primary shaping mold; a second empty step station is provided between the secondary shaping mold and the primary forming mold, and the primary forming mold and the font mold There is a third empty step station between them, a fourth empty step station between the font mold and the inner hole repairing mold, and a fifth empty step station between the deburring mold and the secondary forming mold.

A kind of production technology of nut plate, it is characterized in that: comprise the steps:

Use a plate with a thickness of 1.95mm to make a nut plate. First, the plate passes through the first punching die, the second punching die, and the third punching die to punch out positioning holes or type holes;

Then start to stretch the central part, and stretch through the stretching die once in the middle to form a circular concave part with an outer diameter of 98mm, an outer depth of 30mm, and a chamfer radius of 8mm;

Form a circular concave part with an outer diameter of 80 mm, an outer depth of 32 mm, an upper chamfer radius of 8 mm, and a lower chamfer radius of 7 mm through a secondary stretching die;

After three drawing dies, a circular recess with an outer diameter of 66 mm, an outer depth of 33 mm, an upper chamfer radius of 7.5 mm, and a lower chamfer radius of 6.5 mm is formed;

After four drawing dies, a circular recess with an outer diameter of 56 mm, an outer depth of 36 mm, an upper chamfer radius of 7 mm, and a lower chamfer radius of 6 mm is formed;

After five drawing dies, a circular recess with an outer diameter of 48.5mm, an outer depth of 38mm, an upper chamfer radius of 6.5mm, and a lower chamfer radius of 5.5mm is formed;

After six drawing dies, a circular recess with an outer diameter of 43 mm, an outer depth of 40 mm, an upper chamfer radius of 6 mm, and a lower chamfer radius of 5 mm is formed;

After seven drawing dies, a circular recess with an outer diameter of 38.5mm, an outer depth of 43mm, an upper chamfer radius of 5.5mm, and a lower chamfer radius of 4.5mm is formed;

After eight stretching dies, a circular recess with an outer diameter of 35 mm, an outer depth of 43 mm, and an upper chamfer radius of 5 mm is formed;

Then punch through the punching die four times to punch out the bottom surface of the circular concave part to form a through hole;

Then, a cylindrical pipe body with an outer diameter of 32mm, an outer depth of 44.5mm, and an upper chamfer radius of 4.5mm is formed through nine stretching dies;

A cylindrical pipe body with an outer diameter of 29.5mm, an outer depth of 46mm, and an upper chamfer radius of 4mm is formed through ten stretching dies;

After eleven stretching dies, a cylindrical pipe body with an outer diameter of 27.5mm, an outer depth of 47mm, and an upper chamfer radius of 3.5mm is formed;

After twelve stretching dies, a cylindrical pipe body with an outer diameter of 26mm, an outer depth of 48mm, and an upper chamfer radius of 3mm is formed; the stretching process is completed;

After a shaping mold, the height of the cylindrical pipe body is changed from the previous 48mm to 39mm, while the outer diameter remains 26mm, and the upper chamfer radius becomes 1.5mm, which increases the wall thickness of the cylindrical pipe body;

After the second shaping mold, the height of the cylindrical pipe body is shaped to 30mm, while the outer diameter is kept at 26mm, and the radius of the upper chamfer becomes 1.5mm, which further increases the wall thickness of the cylindrical pipe body to 2.95mm. About 1.5 times the thickness of the plate;

Enter the primary forming mold, and form a small flange radially outward at the bottom of the cylindrical pipe body;

Then enter the font mold, and punch out the font shape on the surface of the product;

Then enter the inner hole repairing mold to trim the inner wall of the cylindrical pipe;

Then go through the first edge trimming mold, the second edge trimming mold, and the burr pressing mold in turn to cut off excess scrap and remove burrs;

Then through the secondary forming die and the tertiary forming die in turn, the material around the original plate is bent upwards and downwards to form the upper bending part and the lower bending part of the periphery of the nut plate;

Finally cut off to get two finished nut plates.

The invention adopts the continuous mold assembly with continuous and automatic operation, cooperates with the automatic transmission operation of the manipulator, and does not disassemble and assemble the material block in the middle, so not only the processing efficiency is greatly improved, but also the processing accuracy is also greatly improved.

Description of drawings:

Fig. 1 is the structural representation of drawing mold assembly in the mold equipment of the present invention;

Fig. 2 is the structural representation of plastic mold assembly in mold equipment of the present invention;

Fig. 3 is the manufacture process schematic diagram of nut plate among the present invention;

Fig. 4 is a structural schematic diagram of a nut plate made by the present invention.

detailed description:

The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

As shown in Fig. 1-Fig. 4, what the present invention describes is a kind of continuous forming mold equipment of nut plate, and this mold equipment comprises stretching mold assembly 1 and shaping mold assembly 2, wherein, stretching mold assembly 1 Include successively a punching die 101, a secondary punching die 102, a punching die 103 for three times, a drawing die 104, a drawing die 105 for a second time, a drawing die 106 for three times, a drawing die 107 for four times, and a drawing die for five times. Stretching die 108, six stretching dies 109, seven stretching dies 110, eight stretching dies 111, four punching dies 112, nine stretching dies 113, ten stretching dies 114, eleven stretching dies Stretching die 115, twelve stretching dies 116; shaping die assembly 2 successively includes primary shaping die 201, secondary shaping die 202, primary forming die 203, font die 204, inner hole repairing die 205, primary trimming die 206 , secondary trimming die 207, pressing burr die 208, secondary forming die 209, tertiary forming die 210 and cutting die 211.

In the shaping mold assembly 2, a first empty step station 301 is also provided before the primary shaping mold 201; a second empty step station 302 is provided between the secondary shaping mold 202 and the primary shaping mold 203, A third empty step station 303 is provided between the primary forming die 203 and the font die 204, a fourth empty step station 304 is provided between the font die 204 and the inner hole repairing die 205, and the deburring die 208 and the secondary forming die The 5th empty step station 305 is provided between 209. Because different molds require different installation spaces, a suitable installation space is formed by empty step stations, so as not to be too compact and cause insufficient space.

In the present embodiment, the nut plate is made with a plate having a thickness of 1.95 mm. First, the nut plate passes through the primary punching die 101, the secondary punching die 102, and the triple punching die 103 to punch out positioning holes or type holes; The center begins to stretch, as shown in the diagram,

Stretching through the stretching die 104 once in turn forms a circular concave portion with an outer diameter of 98 mm, an outer depth of 30 mm, and a chamfer radius of 8 mm;

Through the secondary drawing die 105, a circular concave portion with an outer diameter of 80 mm, an outer depth of 32 mm, an upper chamfer radius of 8 mm, and a lower chamfer radius of 7 mm is formed;

After three stretching dies 106, a circular recess with an outer diameter of 66 mm, an outer depth of 33 mm, an upper chamfer radius of 7.5 mm, and a lower chamfer radius of 6.5 mm is formed;

After four drawing dies 107, a circular recess with an outer diameter of 56 mm, an outer depth of 36 mm, an upper chamfer radius of 7 mm and a lower chamfer radius of 6 mm is formed;

After five stretching dies 108, a circular recess with an outer diameter of 48.5 mm, an outer depth of 38 mm, an upper chamfer radius of 6.5 mm, and a lower chamfer radius of 5.5 mm is formed;

After six drawing dies 109, a circular recess with an outer diameter of 43 mm, an outer depth of 40 mm, an upper chamfer radius of 6 mm, and a lower chamfer radius of 5 mm is formed;

After seven drawing dies 110, a circular concave portion with an outer diameter of 38.5 mm, an outer depth of 43 mm, an upper chamfer radius of 5.5 mm, and a lower chamfer radius of 4.5 mm is formed;

Form the circular recess with an outer diameter of 35 mm, an outer depth of 43 mm, and an upper chamfer radius of 5 mm through eight stretching dies 111;

Then carry out punching through punching die 112 four times again, wash away the bottom surface of circular recess, form through hole;

Form the cylindrical pipe body with outer diameter 32mm, outer depth 44.5mm, upper chamfering radius of 4.5mm through nine stretching dies 113 again;

After ten stretching dies 114, a cylindrical pipe body with an outer diameter of 29.5 mm, an outer depth of 46 mm, and an upper chamfer radius of 4 mm is formed;

Form the cylindrical pipe body with an outer diameter of 27.5mm, an outer depth of 47mm, and an upper chamfer radius of 3.5mm through eleven drawing dies 115;

After twelve stretching dies 116, a cylindrical pipe body with an outer diameter of 26 mm, an outer depth of 48 mm, and an upper chamfer radius of 3 mm is formed; the stretching process is completed.

The product that has completed the stretching process enters the shaping mold assembly again, and first passes through a first empty step station 301, that is, does not perform any action on the product;

Through one shaping mold 201, the height (i.e. outer depth) of the cylindrical pipe body is adjusted to 39mm from the previous 48mm, while the outer diameter remains 26mm, and the upper chamfer radius becomes 1.5mm, which makes the wall of the cylindrical pipe body thickening;

Then through the secondary shaping die 202, the height of the cylindrical pipe body is shaped to 30mm, while the outer diameter remains 26mm, and the radius of the upper chamfer becomes 1.5mm, which further increases the wall thickness of the cylindrical pipe body to 2.95mm , about 1.5 times the thickness of the plate;

Go through a second empty step station 302 again;

Enter the primary forming die 203, and form a small flange radially outward at the bottom of the cylindrical pipe body;

Go through a third empty step station 303 again;

Then enter the font mold 204, and punch out the font shape on the product surface;

Go through a fourth empty step station 304 again;

Enter the inner hole repairing mold 205 again, and trim the inner wall of the cylindrical pipe;

Go through the trimming die 206, the trimming die 207 for the second time, and the trimming die 208 successively, to cut off excess trimmings and remove flashes;

Go through a fifth empty step station 305 again;

Then through the secondary forming die 209 and the tertiary forming die 210, the material around the original plate is bent upwards and downwards to form the upper and lower bending parts of the periphery of the nut plate;

Finally cut off to get two finished nut plates.

The invention adopts the continuous mold assembly with continuous and automatic operation, cooperates with the automatic transmission operation of the manipulator, and does not disassemble and assemble the material block in the middle, so not only the processing efficiency is greatly improved, but also the processing accuracy is also greatly improved.

Claims (1)

1. a production technique of nut plate, is characterized in that: comprise the steps: Use a plate with a thickness of 1.95mm to make a nut plate. First, the plate passes through the first punching die, the second punching die, and the third punching die to punch out positioning holes or type holes; Then start to stretch the central part, and stretch through the stretching die once in the middle to form a circular concave part with an outer diameter of 98mm, an outer depth of 30mm, and a chamfer radius of 8mm; Form a circular concave part with an outer diameter of 80 mm, an outer depth of 32 mm, an upper chamfer radius of 8 mm, and a lower chamfer radius of 7 mm through a secondary stretching die; After three drawing dies, a circular recess with an outer diameter of 66 mm, an outer depth of 33 mm, an upper chamfer radius of 7.5 mm, and a lower chamfer radius of 6.5 mm is formed; After four drawing dies, a circular recess with an outer diameter of 56 mm, an outer depth of 36 mm, an upper chamfer radius of 7 mm, and a lower chamfer radius of 6 mm is formed; After five drawing dies, a circular recess with an outer diameter of 48.5mm, an outer depth of 38mm, an upper chamfer radius of 6.5mm, and a lower chamfer radius of 5.5mm is formed; After six drawing dies, a circular recess with an outer diameter of 43 mm, an outer depth of 40 mm, an upper chamfer radius of 6 mm, and a lower chamfer radius of 5 mm is formed; After seven drawing dies, a circular recess with an outer diameter of 38.5mm, an outer depth of 43mm, an upper chamfer radius of 5.5mm, and a lower chamfer radius of 4.5mm is formed; After eight stretching dies, a circular recess with an outer diameter of 35 mm, an outer depth of 43 mm, and an upper chamfer radius of 5 mm is formed; Then punch through the punching die four times to punch out the bottom surface of the circular concave part to form a through hole; Then, a cylindrical pipe body with an outer diameter of 32mm, an outer depth of 44.5mm, and an upper chamfer radius of 4.5mm is formed through nine stretching dies; A cylindrical pipe body with an outer diameter of 29.5mm, an outer depth of 46mm, and an upper chamfer radius of 4mm is formed through ten stretching dies; After eleven stretching dies, a cylindrical pipe body with an outer diameter of 27.5mm, an outer depth of 47mm, and an upper chamfer radius of 3.5mm is formed; After twelve stretching dies, a cylindrical pipe body with an outer diameter of 26mm, an outer depth of 48mm, and an upper chamfer radius of 3mm is formed; the stretching process is completed; After a shaping mold, the height of the cylindrical pipe body is changed from the previous 48mm to 39mm, while the outer diameter remains 26mm, and the upper chamfer radius becomes 1.5mm, which increases the wall thickness of the cylindrical pipe body; After the second shaping mold, the height of the cylindrical pipe body is shaped to 30mm, while the outer diameter is kept at 26mm, and the radius of the upper chamfer becomes 1.5mm, which further increases the wall thickness of the cylindrical pipe body to 2.95mm. About 1.5 times the thickness of the plate; Enter the primary forming mold, and form a small flange radially outward at the bottom of the cylindrical pipe body; Then enter the font mold, and punch out the font shape on the surface of the product; Then enter the inner hole repairing mold to trim the inner wall of the cylindrical pipe; Then go through the first edge trimming mold, the second edge trimming mold, and the burr pressing mold in turn to cut off excess scrap and remove burrs; Then through the secondary forming die and the tertiary forming die in turn, the material around the original plate is bent upwards and downwards to form the upper bending part and the lower bending part of the periphery of the nut plate; Finally cut off to get two finished nut plates.