বাড়ি / সংবাদ / ব্লগস / Production Process Guidance of Leaf Springs - Eyes rolling (Part 5)

Production Process Guidance of Leaf Springs - Eyes rolling (Part 5)

দর্শন:0     লেখক:Wondee Autoparts     প্রকাশের সময়: 2022-04-15      উত্স:Wondee Autoparts

Production Process Guidance of Leaf Springs

চোখ ঘুরছে (Part 5)

1. Definition:


Heat the spring flat bars to the specified temperature, and then use special equipment and tooling molds to roll the ends of the spring flat bar into circular eyes.


Relevant dimensions of eye rolling technology are shown in Figure 1 below.

Schematic diagram of eyes rolling

(Fig. 1 Schematic diagram of eyes rolling)


2. Application:


The first leaf or / and last leaf of a leaf spring.


3. Operating procedures:


3.1. Inspection before eye rolling

Before rolling the eyes, check the inspection qualification mark of the previous process of spring flat bars, which must be qualified.At the same time, check the specifications of spring flat bars, only they meet the process requirements, the rolling process can be allowed to start.


3.2. গরম করার

Heating with furnace, the furnace temperature is controlled at 900-1000 ℃, and the heating length of spring flat bar = flat bar length / 2 + 40mm. If the heating equipment fails for more than 10 minutes during the heating process, the heating shall be stopped, and the heated spring flat bar shall be pulled out of the furnace to avoid over-heating and over-burning.

3.3. Selection of rolling mandrel

The mandrel shall be selected according to the eye’s inner diameter and the drawing of therolling mandrel, and the lower die adopts R = D /2(R=radius of the eye, D= diameter of the rolling mandrel).

3.4. Positioning of end cutting and eye rolling

When end cutting of the spring flat bar, it shall be positioned by the central hole. If it is a parabolic spring flat bar, the flat side of the spring flat bar shall be placed downward (and the tapered inclined planeside of the bar shall be upward), and then cutting.

When eye rolling, it is still positioned by the central hole, and then the eye is rolled in different directions according to whether it is an upper ear or a lower ear.


3.5. Eye rollinginspection


When rolling a eye, first piece of spring steel flat bar must be inspected firstly. Only it pass the first inspection, the mass production can be carried on.

See Table 1 for the inspection frequency after the first inspection to avoid unqualified products in the production process. The tests related to rolling ears are as follows

1)দ্যroundness detection of rolled eyes is shown in Figure 2 below.


2) Thehorn hole detection ofrolled eyes is shown in Figure 3 below.


3) Rolled eyeshape detection, as shown in Figure 4 below.

Roundness detection of eyes rolling

(Fig. 2Roundness detection of eyes rolling)

Horn hole detection of eyes rolling

(Fig। 3. হর্ন হোল ডিটেকশন চোখ রোলিং)

চোখ ঘূর্ণায়মান আকৃতি সনাক্তকরণ

(চিত্র 4।চোখ রোলিং আকৃতি সনাক্তকরণ)


3.6। উপাদান ব্যবস্থাপনা


চোখের ঘূর্ণিত বসন্ত ইস্পাত সমতল বার সুন্দরভাবে স্ট্যাক করা হবে। এটা ইচ্ছাকৃতভাবে তাদের স্থাপন নিষিদ্ধ, পৃষ্ঠ bruises ফলে। পরিদর্শন যোগ্যতা চিহ্ন তৈরি করা হবে এবং কাজের স্থানান্তর কার্ড পেস্ট করা হবে।

4. চোখ রোলিং পরিদর্শন মান(Refer to the standard: GBT 19844-2018 / ISO 18137: 2015 MOD Leaf Spring - Technical Specifications):

Measurements according to figure 1 and figure 2, the inspection standards of eyes rolling are shown in table 1 below.


Inspection Items

Diameter of eyes

Verticality and parallelism of eyes

Shape of eyes

Roundness of eyes


Horn holes

Width of eyes

Length deviation of eyes

Surface quality of Eye rolling

প্রযুক্তিগত প্রয়োজনীয়তা

According to the process card Requirements

δ≤B×1%

Check according to figure 4

Clearance after passing through the end of plug gauge ≤ 0.3mm (check according to figure 2)

Insertion depth of plug gauge stop ≤ B × 5% (check according to figure 3)

According to the process card Requirements

L1±1.5Total length L ± 3mm

Half length L1 ± 1.5mm

There shall be no overheating, overburning and pressed iron oxide scale. Bending within 75mm of the plane of the eye rolled end ≤ 0.5mm

Measuring and inspection tools

Name

Plug gauge

Angular rule

Special ruler

Plug gauge

Plug gauge

Vernier Caliper

Tape measure

চাক্ষুষ পরিদর্শন

সঠিকতা

0.02mm

0.04mm

0.1mm

0.02mm

0.02mm

0.02mm

1mm

নমুনা পদ্ধতি

Each batch shall be inspected according to the first piece, middle pieces and last piece inspection, and the visual inspection rate of eyes rolling surface quality is 100%.


দ্বারা কম্পাইলWONDEE Autoparts

2022-4-15

সম্পর্কিত খবর

সংশ্লিষ্ট পণ্য

বিষয়বস্তু খালি!

সদর দপ্তর

জিন্নাহ ইন্ডাস্ট্রিয়াল পার্ক, জিয়াউন, ফুজিয়ান, চীন 361006
ইমেইল:info@wondee.com

সম্পদ

প্রতিষ্ঠান

Copyrignt @ 2021 XIAMEN WONDEE AUTOPARTS CO., LTD. All Rights Reserved | Friendly Links: www.wondee.com | www.wondeetrailerparts.com