CN206918018U

CN206918018U - High-accuracy high-efficiency nutplate

Info

Publication number: CN206918018U
Application number: CN201720638637.2U
Authority: CN
Inventors: 王长土
Original assignee: ZHEJIANG CHANGHUA AUTO PARTS CO Ltd
Current assignee: Changhua Holding Group Co ltd
Priority date: 2017-06-05
Filing date: 2017-06-05
Publication date: 2018-01-23
Anticipated expiration: 2027-06-05

Abstract

A kind of high-accuracy high-efficiency nutplate is the utility model is related to, is paid for auto parts and components lock, including first thickness sheet material and second thickness sheet material, the thickness of the first thickness sheet material are less than the thickness of the second thickness sheet material；The first thickness sheet material and the second thickness sheet material are integrally formed and are made；The first thickness sheet material and the angled connection of second thickness sheet material；The second thickness sheet material is tapped with internal thread.The application structure Reliable guarantee quality, improve market competitiveness of enterprises.

Description

High-accuracy high-efficiency nutplate

Technical field

It the utility model is related to a kind of nutplate, and in particular to a kind of high accuracy, efficient integrated nut and sheet material.

Background technology

With the development of science and technology, the progress of technology, automobile product make rapid progress, also fastener products are proposed higher It is required that and auto parts and components are the key areas that Domestic Automotive Industry participates in globalization.In response to electronic technology develop rapidly and Its extensive use in auto industry, the degree more and more higher of automotive circuit diagram, while the security of automobile is also required to get over Come higher.According to statistics, similar 70% it is as caused by electric system in vehicle failure, the reason for causing electric system failure is very It is more, but some of failures, then be due to fastener it is bad caused by, these failures gently then influence the work(in terms of automobile Can, tragedy heavy then that car crash even occurs, thereby, it is ensured that the reliability of fastening parts of automobiles just seems extremely important.

On automobile, nutplate and play a very important role.Many parts are paid on vehicle body by nut lock.With It is more and more automobile function, automobile using parts are also more and more more complicated, also more and more in vehicle top nut number, spiral shell Mother is the important step of automobile production assembling.

Prior art production nutplate is so that hexagonal or tetragonal nut to be manually placed on to the through hole of sheet material, then with welding side Formula welds, and this mode welded nut, has the disadvantages that：

1st, the easy solder skip of nut, could be found after automobile factory assembles, rework cost is very big；

2nd, the factor of voltage, electric current, product cleannes etc. influences during welded nut, and firm welding is unstable；

3rd, welded nut can not bear larger screw-down torque, and using area is limited.

Therefore, the combination of prior art nut and sheet material, processing technology device, the place also lifted.

Utility model content

The purpose of this utility model is to provide a kind of high accuracy, efficient nutplate, and structure is reliable, product quality is consistent, To solve existing technical problem.

To achieve the above object, the utility model employs following technical scheme：

A kind of high-accuracy high-efficiency nutplate, paid for auto parts and components lock, including a first thickness sheet material and one second thickness Sheet material is spent, the thickness of the first thickness sheet material is less than the thickness of the second thickness sheet material；

The first thickness sheet material and the second thickness sheet material are integrally formed with the progressive die and are made；

The first thickness sheet material and the angled connection of second thickness sheet material；

The second thickness sheet material is tapped with internal thread.

Nutplate described in the application preferred embodiment, the outer rim of the second thickness sheet material is circular.

Nutplate described in the application preferred embodiment, the second thickness sheet material are by punch forming at least twice.

Nutplate described in the application preferred embodiment, the thickness of the first thickness sheet material is 2.25mm, described second The thickness of thickness sheet material is between 3.15mm to 3.25mm.

The design concept of the application is to design a kind of progressive die stretch forming process, realizes integral type tapping technique Nutplate, instead of welding weldering nut technique after punching press, process mould is complicated, and required precision is high, passes through the anti-of multiple working procedure Multiple stretching, Contoured squeeze, so as to reach stretching height, the thick requirement for being more than thickness of slab of hole wall, realize the torsion for meeting screw after tapping Power, substitution is artificial, reaches safety in production, saves man-hour reduction expense, improves market competitiveness of enterprises.

Technical scheme as a result of more than so that the utility model has the following advantages effect：

Firstth, the application produces automatically, and speed improves, and reduces work hours, and reduces entreprise cost, improves enterprise market competition Power；

Secondth, the application nutplate screw thread torsion meets the requirements, and reaches welded nut parameter request；

3rd, the application nut harden structure is reliable, reduces welding procedure, avoids the quality problems such as solder skip, rosin joint；

4th, the application unitary nut plate reduces the welding slag problem after welding, lifts exterior quality.

Certainly, any one specific embodiment of teachings herein is implemented, the skill might not simultaneously with all of the above Art effect.

Brief description of the drawings

Fig. 1 is the nutplate schematic diagram of the application；

Fig. 2 is Fig. 1 cutaway view；

Fig. 3 is the process flow diagram of the application；

Fig. 4 is the diel schematic diagram of the application；

Fig. 5 is Fig. 4 enlarged schematic partial views；

Fig. 6 is the process flow diagram of the application.

Embodiment

For ease of understanding, preferred embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1, Fig. 2 and Fig. 3 are refer to, a kind of high-accuracy high-efficiency nutplate, is paid for auto parts and components lock, including first thick Sheet material 11 and second thickness sheet material 12 are spent, the thickness of the first thickness sheet material is less than the thickness of the second thickness sheet material；Institute State first thickness sheet material and the second thickness sheet material is integrally formed with the progressive die and is made；The first thickness sheet material and described The two angled connections of thickness sheet material, in the application, the connection angle of first thickness sheet material and second thickness sheet material is 90 degree；Institute State second thickness sheet material and be tapped with internal thread 13.

In addition, the outer rim of the second thickness sheet material is circular, must have different from welded nut, during welding outside nut Edge angle, it can just grip, the second thickness sheet material of the application is by punch forming at least twice, so outer rim is round Shape.As shown in figure 3, in the application second thickness sheet material be by punch forming three times, but can not be used for limit the application.

As shown in figure 3, the thickness of the first thickness sheet material is 2.25mm, after stretched, during second thickness The thickness of sheet material is between 1.80mm to 1.90mm, it is preferred that thickness 1.85mm, after first time punching press, it is preferred that thick Degree becomes 2.3mm, after second of punching press, it is preferred that thickness becomes 2.8mm, and after third time punching press, described second is thick The thickness of degree sheet material becomes between 3.15mm to 3.25mm, it is preferred that thickness 3.2mm.

Then illustrate, a kind of forming method of high-accuracy high-efficiency nutplate, the nutplate includes a first thickness plate Material and a second thickness sheet material, the thickness of the first thickness sheet material are less than the thickness of the second thickness sheet material；Described first Thickness sheet material and the second thickness sheet material are integrally formed with the progressive die and are made, and as shown in Figure 4 and Figure 5, the progressive die includes Upper mould 21 and lower mould 22, sheet material 23 move between upper die and lower die, progressively receive the PROCESS FOR TREATMENT of upper die and lower die；Described One thickness sheet material and the angled connection of second thickness sheet material；The second thickness sheet material is tapped with internal thread；Such as Fig. 6 institutes Show, the forming method comprises the following steps：

Step 101：Sheet material restocking；Progressive die die length used in this application：2200mm, it is continuous stamping die；Use Punch press：800T；Use sheet metal thickness：2.25mm.

Step 201：Plate stretch；As shown in figure 3, the stretching of the application includes stretching 31 for the first time and second stretches 32, by sheet material flexural deformation at twice.

Step 301：Sheet material pre-punched hole；The sheet material center pre-punched hole 33 of flexural deformation is formed into a through hole.

Step 401：Sheet material hole flanging；As shown in figure 3, the hole flanging of the application includes first time hole flanging 34, second of hole flanging 35 With third time hole flanging 36, by sheet material, hole flanging deforms in three times, three times after hole flanging, the thickness of hole wall be 1.80mm to 1.90mm it Between, it is preferred that thickness 1.85mm.

Step 501：Sheet material cold-heading；The technique that punching press is namely carried out to hole flanging, as shown in figure 3, the punching press bag of the application First time punching press 37, second of punching press 38 and third time punching press 39 are included, after first time punching press, it is preferred that the thickness of hole wall Becoming 2.3mm, after second of punching press, it is preferred that the thickness of hole wall becomes 2.8mm, after third time punching press, hole wall The thickness of thickness i.e. second thickness sheet material becomes between 3.15mm to 3.25mm, it is preferred that thickness 3.2mm.

In addition, as shown in Figure 4 and Figure 5, the continuous stamping die of the application, upper mould is punch-pin, and lower mould is cavity plate, cold-heading work During skill matched moulds, the convex extension part 211 of upper mould is protruded out in the groove 221 of lower mould through sheet material；The groove of lower mould and web contact is One circular groove, the internal diameter of the lower mould groove of punching press progressively amplifies three times, and depth then progressively diminishes, and sheet material is recessed by lower mould The extruding of groove, center have upper mould convex extension part 211 to stop, progressively shortened thickening again.

Step 601：Sheet material tapping；Tapping technique is carried out in the inner edge of second thickness sheet material.After tapping, second thickness sheet material Substitute welded nut.

Also to say, between the step 501 and step 601, in addition to step 502：Sheet material is cut.

Certainly, implement any one specific embodiment of the utility model content, there might not be all of the above simultaneously Technique effect.

Disclosed above is only preferred embodiment of the present utility model, but is not used for limiting itself, any to be familiar with Those skilled in the art is in the case of without prejudice to the utility model spiritual connotation, and the equivalent change done and change all should Fall in the scope of protection of the utility model.

Claims

1. a kind of high-accuracy high-efficiency nutplate, paid for auto parts and components lock, it is characterised in that including a first thickness sheet material and One second thickness sheet material, the thickness of the first thickness sheet material are less than the thickness of the second thickness sheet material；

The second thickness sheet material is tapped with internal thread.

2. nutplate as claimed in claim 1, it is characterised in that the outer rim of the second thickness sheet material is circular.

3. nutplate as claimed in claim 1, it is characterised in that the second thickness sheet material is by striking out at least twice Type.

4. nutplate as claimed in claim 1, it is characterised in that the thickness of the first thickness sheet material is 2.25mm, described The thickness of second thickness sheet material is between 3.15mm to 3.25mm.