CN102248070A - Connection method for metal sheet and nut connecting die - Google Patents
Connection method for metal sheet and nut connecting die Download PDFInfo
- Publication number
- CN102248070A CN102248070A CN2010101923097A CN201010192309A CN102248070A CN 102248070 A CN102248070 A CN 102248070A CN 2010101923097 A CN2010101923097 A CN 2010101923097A CN 201010192309 A CN201010192309 A CN 201010192309A CN 102248070 A CN102248070 A CN 102248070A
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- die
- nut
- punch
- round nut
- metal blank
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Abstract
The invention relates to a connection method for a metal sheet and a nut connecting die. The connection method comprises the following steps of: manufacturing an annular slot on the excircle of a round nut to be connected; manufacturing patterns or slot teeth on the excircle of the lower end of the annular slot; arranging a male die on a sliding block of a press machine; arranging a core shaft in an intermediate hole of the male die; arranging a female die on the upper side of a working bench of the press machine, wherein the condition that the male die and the female die are aligned with each other up and down during installation is required to be ensured; placing metal sheets to be connected on the upper plane of the female die respectively; arranging a nut to be riveted right above the central hole of the female die; placing the round nut on the upper side of the metal sheet; aligning the intermediate core shaft of the male die, and inserting into the intermediate threaded hole of the round nut; starting the press machine; pressing the male die downwards for certain stroke by using the press machine; and lifting and returning the male die by using the press machine when the male die ascends.
Description
Technical field
The present invention relates to a kind of plate and be connected mould and method of attachment with nut, particularly a kind of metal blank is connected mould and method of attachment with nut, belong to the panel beating technical field.
Background technology
Among in sheet metal part, making with panel beating, often need produce the screw thread of fixing other part or playing the connection effect above the softer metal blank at some, in order to reduce the cost of product, the employed material of part of general panel beating class is generally thinner, in order to produce above-mentioned connecting thread, at present, the several method below general the employing: 1, directly produce screw thread on metal blank, this method mainly is that the thicker situation of corresponding plate adapts to; 2, by turning over, at first rout up bottom outlet, on bottom outlet, produce screw thread then all over mould; 3, riveting nut on metal blank; 4, welded nut on metal blank.
In above-mentioned several method, all there is defective in various degree: adopt the method for on plate, directly making screw thread to need plate that enough thickness is arranged, be unfavorable for raw-material saving; Adopt flanging die to turn over endoporus, the method for making screw thread again in endoporus only is suitable for thin metallic plate, and less screw thread, and simultaneously, also there is the lower defective of intensity in this screw thread, inapplicable needing than Dalian relay amount and important occasion; Though the riveted joint screw thread can overcome above-mentioned defective on plate, but, riveting nut generally adopts manual finishing on metal blank at present, not only labour intensity is big, labor productivity is low, simultaneously, the second-rate defective that also has riveted joint, and on metal blank the way of welded nut, exist presentation quality relatively poor, because plate is generally thinner, also can cause between the part of institute's combination and be out of shape, in addition, also there is the defective of welding comparatively airplane crash in materials such as more corresponding aluminium that comparatively are difficult to weld, copper, alloy.
Summary of the invention
The objective of the invention is to: provide a kind of metal blank to be connected mould and method of attachment with nut, overcome existing metal blank existing above-mentioned defective when making connecting thread.
The present invention realizes that the technical scheme that above-mentioned purpose adopts is: a kind of metal blank is connected mould and method of attachment with nut: it is by the position mandrel, punch, die, it is characterized in that: described punch lower end has the bulge loop b of annular, the diameter of the round a of bulge loop inside and the external diameter that is a bit larger tham round nut to be connected, its degree of depth is slightly less than the height of round nut to be connected, described mandrel is installed in the centre bore of punch, mandrel has the free degree that certain stroke slides in the centre bore of punch, the mandrel outside diameter is slightly less than the diameter of round nut internal thread to be connected, and the head of mandrel produces cone shape; Described die, its upper end is a plane, produces circular hole in planar central, the slightly larger in diameter of circular hole is in the outside diameter of round nut.
A kind of metal blank and nut method of attachment: it comprises prepares and two steps of punching press; Described preparation is characterized in that: produce cannelure B on the cylindrical with round nut to be connected, simultaneously, produce decorative pattern or molar A on the cylindrical of the lower end of cannelure B; Described punching press, it is characterized in that: mould is installed on the forcing press, to guarantee upper and lower die alignment during installation, respectively metal blank to be connected is placed on the die on the plane, simultaneously, with the position of nut to be riveted be in the die centre bore directly over, round nut is placed in above the metal blank, simultaneously, the middle mandrel of punch is aligned and inserts in the neutral threaded hole of round nut, start forcing press, utilize forcing press that punch is pressed downward to certain stroke, simultaneously, forcing press promotes punch and returns.
Operation principle of the present invention is: when forcing press drive punch moves downward, when punch drops to certain altitude, the round a of the bulge loop inside of punch is fastened on round nut among the round a, when punch continues to descend, the baseplane of round nut is equivalent to piercing punch, with die the metal blank stamping-out is portalled, and form circular waste material c, in addition, the bulge loop b on the punch and the last plane of die are pushed the metal blank around the cylindrical of round nut bottom, and formation annulus C, from annulus C, extrude unnecessary material and clamp-on the cannelure B inside of round nut, make and carry out the axis location between plate and the round nut, clamp-on the excess metal in round nut bottom decorative pattern or the molar, prevent the rotation between round nut and the plate, when the forcing press backhaul, punch rises, and round nut is connected with metal blank and finishes.
Beneficial effect: the present invention adopts the method for special mould to realize the riveted joint of round nut and metal blank, have that efficient is higher, riveting quality good, characteristics, can overcome existing plate rivet in existing defective.
Description of drawings
Fig. 1 is the connection diagram of round nut of the present invention and plate;
Fig. 2 is state diagram before the mold work of the present invention;
Fig. 3 is mold work initial state figure of the present invention;
Fig. 4 is that mold work of the present invention is finished schematic diagram;
Shown in the figure: 1, plate; 2, nut; 3, mandrel; 4, punch; 5, die; A, decorative pattern (molar); B, cannelure; C, annulus; A, circle; B, bulge loop; E, waste material.
The specific embodiment
Produce cannelure B on the cylindrical with round nut to be connected (2), simultaneously, on the cylindrical of the lower end of cannelure B, produce decorative pattern or molar A; Punch (4) tool is installed on the slide block of forcing press, simultaneously, mandrel (3) is installed in the interstitial hole of punch (4), die (5) is installed in above the workbench of forcing press, to guarantee during installation that punch-die aligns up and down, respectively metal blank to be connected (1) being placed in die (5) goes up on the plane, simultaneously, with the placement of nut to be riveted (2) be in die (5) centre bore directly over, round nut (2) is placed in above the metal blank (1), simultaneously, the middle mandrel (3) of punch (4) is aligned and inserts in the neutral threaded hole of round nut (2), start forcing press, utilize forcing press that punch is pressed downward to certain stroke, in the time of on the punch (4), forcing press promotes punch and returns.
Claims (2)
1. a metal blank is connected mould and method of attachment with nut, it is characterized in that: produce cannelure B on the cylindrical of round nut to be connected (2), simultaneously, produce decorative pattern or molar A on the cylindrical of the lower end of cannelure B; Punch (4) tool is installed on the slide block of forcing press, simultaneously, mandrel (3) is installed in the interstitial hole of punch (4), die (5) is installed in above the workbench of forcing press, will guarantee during installation that punch-die aligns up and down;
2. be connected mould and method of attachment with nut according to claims 1 described a kind of metal blank, it is characterized in that: respectively metal blank to be connected (1) is placed in die (5) and goes up on the plane, simultaneously, with the placement of nut to be riveted (2) be in die (5) centre bore directly over, round nut (2) is placed in above the metal blank (1), simultaneously, the middle mandrel (3) of punch (4) is aligned and inserts in the neutral threaded hole of round nut (2), start forcing press, utilize forcing press that punch is pressed downward to certain stroke, in the time of on the punch (4), forcing press promotes punch and returns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101923097A CN102248070A (en) | 2010-05-21 | 2010-05-21 | Connection method for metal sheet and nut connecting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101923097A CN102248070A (en) | 2010-05-21 | 2010-05-21 | Connection method for metal sheet and nut connecting die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102248070A true CN102248070A (en) | 2011-11-23 |
Family
ID=44975847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101923097A Pending CN102248070A (en) | 2010-05-21 | 2010-05-21 | Connection method for metal sheet and nut connecting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102248070A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689137A (en) * | 2012-05-23 | 2012-09-26 | 上海乐深电子有限公司 | Method for manufacturing thin-material spring plate with nut riveted in thickness direction |
| CN106563735A (en) * | 2015-10-13 | 2017-04-19 | 上海夙臻机械制造有限公司 | Punch-riveting system applicable to manufacture of automobile parts and components, and operation method for same |
-
2010
- 2010-05-21 CN CN2010101923097A patent/CN102248070A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689137A (en) * | 2012-05-23 | 2012-09-26 | 上海乐深电子有限公司 | Method for manufacturing thin-material spring plate with nut riveted in thickness direction |
| CN102689137B (en) * | 2012-05-23 | 2015-02-11 | 上海乐深电子有限公司 | Method for manufacturing thin-material spring plate with nut riveted in thickness direction |
| CN106563735A (en) * | 2015-10-13 | 2017-04-19 | 上海夙臻机械制造有限公司 | Punch-riveting system applicable to manufacture of automobile parts and components, and operation method for same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |