Surveying and mapping of mechanical parts
Project introduction
Customer products
This product is a mechanical part, and the processing structure is complex, so the size and relative position requirements are high. Therefore, the accessory needs to scan the data of the first industrial part in 3D, detect the quality error between the data and the design document, and analyze the mapping cost of mechanical parts to ensure the smooth progress of production.
Customer difficulties
After the customer's castings are processed, how to detect them has become a difficult problem. The customer has no way to detect the complex structure, many internal dimensions, important processing positions and relative positions.
Nanjing Ningrui handheld 3D laser scanner
The customer recognizes that the measuring equipment
The customer learned about our hand-held 3D laser scanner of Nanjing Ningrui metrology through the introduction of a friend, and checked the relevant knowledge on the Internet. He thought it was too suitable for the mapping of mechanical parts they wanted, so he found us.
Introduction to 3D laser scanner
When the portable 3D scanner T-scan works, the six beam laser is used to obtain the three-dimensional point cloud on the object surface. The operator can hold the equipment in his hand and adjust the distance and angle between the instrument and the measured object in real time. The operation is flexible, convenient and easy to learn. When scanning large volume objects, it can cooperate with the global photogrammetry system to eliminate the cumulative error and scan the size, shape and working environment of the scanned objects efficiently and accurately.
Operation of handheld 3D laser scanner and photogrammetry on products
Solution
The hand-held three-dimensional scanner is a mechanical mapping equipment. Firstly, the positioning mark points should be quickly pasted on the scanned products, and then the three-dimensional data of workpiece surface shape can be obtained quickly and accurately by using the mark points pasted on the workpiece surface through non-contact three-dimensional laser scanning; After the scanner obtains the high-precision data, the obtained data is compared with the existing digital analog, so as to obtain the product deviation and carry out cost analysis.
Scanning process
  It takes 7 minutes to paste the marked points;
  Data post-processing and comparison for 45 minutes.
Process display
3. Data comparison
summary
The grooved parts of the rotor body in the machine conform to the fit of the rotor gear and change the old comparison method. The use of 3D laser scanner is not only convenient and fast, but also can more accurately grasp the accuracy of each position, which brings better service to customers.
Reverse / comparative product presentation LW

1. The unmarked shape tolerance shall meet the requirements of gb1184-80.
2. The allowable deviation of unmarked length dimension is 0.5mm.
3. Unspecified fillet radius R5.
4. All undeclared chamfers are C2.
5. Blunt acute angle.
6. Blunt sharp edges, remove burrs and flash.
1. There shall be no scratch, scratch and other defects damaging the part surface on the part processing surface.
2. The machined thread surface shall be free of defects such as black skin, bump, random buckle and burr.
Before painting, rust, scale, grease, dust, soil, salt and dirt must be removed from the surface of all steel parts to be painted.
3. Before derusting, remove grease and dirt on the surface of iron and steel parts with organic solvent, alkali solution, emulsifier and steam.
4. The time interval between the surface to be coated by shot peening or manual derusting and the primer shall not be more than 6h.
5. The surfaces of riveted parts in contact with each other must be coated with a thickness of 30 40 before connection M antirust paint. Lap edges shall be closed with paint, putty or adhesive. The primer damaged due to processing or welding shall be repainted.
3 Heat treatment of parts:
1. After quenching and tempering, HRC50 55.
2. Medium carbon steel: 45 or 40Cr parts are subject to high-frequency quenching, tempering at 350 370 , and hrc40 45.
3. Carburizing depth 0.3mm.
4. Carry out high temperature aging treatment.
4 Technical requirements after finishing
1. The finished parts shall not be placed directly on the ground, and necessary support and protection measures shall be taken. 2. The machined surface shall be free of rust, corrosion, bumps, scratches and other defects affecting performance, service life or appearance.
3. There shall be no peeling on the surface finished by rolling.
4. There shall be no oxide scale on the surface of the parts after heat treatment in the final process. The finished mating surface and tooth surface shall not be annealed
5 Sealing treatment of parts:
1. All seals must be soaked with oil before assembly.
2. Before assembly, strictly check and remove the sharp corners, burrs and foreign matters left during part processing. Ensure that the seal is not scratched during installation.
3. The excess adhesive flowing out shall be removed after bonding.
1. After the gear is assembled, the contact spots and backlash on the tooth surface shall comply with the provisions of GB10095 and gb11365.
2. The reference end face of the gear (worm gear) shall fit the shaft shoulder (or the end face of the positioning sleeve), and it cannot be checked with a 0.05mm feeler gauge. The perpendicularity between the gear reference end face and the axis shall be ensured.
3. The joint surface of gearbox and cover shall be in good contact.
1. The casting tolerance zone is symmetrical to the basic dimensional configuration of the blank casting.
2. Cold lap, crack, shrinkage cavity, penetrating defect and serious incomplete defect (such as under casting, mechanical damage, etc.) are not allowed on the casting surface.
3. The casting shall be cleaned without burrs and flash. The pouring and riser on the non machining indication shall be cleaned and flush with the casting surface.
4. The cast words and marks on the non machined surface of the casting shall be clear and legible, and the position and font shall meet the drawing requirements.
5. The roughness of non machined surface of casting, sand casting R, shall not be greater than 50 m
6. The pouring riser, flying thorn, etc. shall be removed from the casting. The residual amount of pouring and riser on the non machined surface shall be leveled and polished to meet the surface quality requirements.
7. The molding sand, core sand and core bone on the casting shall be removed.
8. The casting has inclined parts, and its dimensional tolerance zone shall be configured symmetrically along the inclined plane.
9. The molding sand, core sand, core bone, fleshy, sticky sand, etc. on the casting shall be shoveled, ground and cleaned.
10. The wrong type and boss casting deviation shall be corrected to achieve a smooth transition and ensure the appearance quality.
11. The wrinkle on the non machined surface of the casting shall be less than 2mm deep and the spacing shall be greater than 100mm.
12. The non machined surfaces of machine product castings shall be shot peened or roller treated to meet the requirements of cleanliness Sa21 / 2.
13. Castings must be water toughened.
14. The casting surface shall be flat, and the gate, burr, sand sticking, etc. shall be removed.
15. Casting defects such as cold shuts, cracks and holes that are detrimental to use are not allowed.
1. The nozzle and riser of each ingot shall have sufficient cutting amount to ensure that the forging has no shrinkage cavity and serious deflection.
2. Forgings shall be forged on a forging press with sufficient capacity to ensure full penetration in the forging.
3. Forgings are not allowed to have visible cracks, folds and other appearance defects affecting use. Local defects can be removed, but the cleaning depth shall not exceed 75% of the machining allowance. The defects on the non machined surface of forgings shall be cleaned and smoothly transition.
4. Forgings shall be free of white spots, internal cracks and residual shrinkage cavities.

PETALING JAYA: Low-profile Datuk Gan Kim Huat is consolidating his businesses in two listed companies, SKP Resources Bhd and Tecnic Group Bhd, in a move that will pave the way for the establishment of a major plastic parts manufacturer.
Yesterday, the share prices of SKP and Tecnic climbed to all-time highs of 71 sen and RM5.08, respectively, before both stocks were suspended, "pending a material announcement".
It is learnt that the merger and acquisition exercise could involve cash and the issuance of new SKP shares.
Gan and his family own about 67% in SKP and 69% in Tecnic, formerly known as STS Tecnic Bhd.
"It's a move that the Gan family has been looking at for some time to create an entity with economies of scale. A merger can be synergistic for the two companies, which can lead to accretive earnings going forward," said a source.
SKP, which has been on expansion mode over the past few years, is in the business of manufacturing plastic parts and components, contract manufacturing, precision mould making, the sub-assembly of electronic and electrical equipment and other secondary processes.
For the financial year ended March 31, 2013 (FY13), British electrical appliance brand Dyson contributed 55% to SKP's total sales.
According to SKP's website, its other clients include Hewlett-Packard, Sharp, Flextronics and Pioneer.
Tecnic, meanwhile, is involved in plastic moulding design and fabrication, plastic injection and blow moulding for the automotive, electrical and electronic sectors as well as industrial consumable products. It counts Valeo, Sharp, Panasonic, Denso, Suzuki, Proton and Perodua as its clients.
SKP and Tecnic had cash and cash equivalents of RM19.4mil and RM25.7mil, respectively, as at June 30. However, SKP has seen a higher trading volume in recent months, while Tecnic is a relatively tightly held stock.
In an earlier note, RHB Research said SKP could achieve a two-year earnings compounded annual growth rate of 57.9% on the back of a 75% expansion in capacity to cater to increasing orders from Dyson.
SKP has a new plant in Senai, Johor, which is slated for completion next month and achieve full-scale operations by FY17, Kenanga Research said in a separate report.
The research house noted that SKP's stronger order-book, underpinned by orders from Dyson to manufacture two new product lines for vacuum cleaners and fans, will provide earnings visibility for the next few years.
"The new products are next-generation appliances that will be able to fetch higher margins and contribute to the group's earnings. We understand that a major part of the group's new plant will cater to the production of the two new products," it added.
SKP jumped 10.5 sen to 71 sen, with 38.37 million shares being traded.
Tecnic rose 31 sen, or 6.5%, to RM5.08, with 219,500 shares changing hands.

The CNC in CNC Machining stands for Computer Numerical Control. CNC Machining is a process used in the manufacturing sector that involves the use of computers to control machine tools. Tools that can be controlled in this manner include lathes, mills, routers and grinders. On the surface, it may look like a normal PC controls the machines, but the computer's unique software and control console are what really sets the system apart for use in CNC machining. Under CNC Machining, machine tools function through numerical control. A computer program is customized for an object and the machines are programmed with CNC machining language that essentially controls all features like feed rate, coordination, location and speeds. With CNC machining, the computer can control exact positioning and velocity. CNC machining is used in manufacturing both metal and plastic parts. This state-of-the-art technology is fast and cost-efficient. Having computers play a vital and central role in operating and controlling the machine tools, as compared to doing so through levers or hand wheels, carries with it a whole lot of remarkable advantages. There is a significant increase in output and productivity. With machines doing most of the work through computer numerical control, more work is done in less time. There is also greater precision compared to manual machining; you get to go through the exact same process unerringly again and again. You get precise and accurate results. The precision of the process makes it possible to produce complicated and intricate parts with very little margin for error and material wastage. To make sure that the process remains this way, one has to have the best CNC machining services for support. You need to have people you trust to run to so that the machines and operations are kept problem-free as much as possible. Should problems arise, you need CNC machining services ready to come to your assistance to diagnose the problem and trouble shoot for you. You also need the best CNC machining services for regular maintenance and calibration of the machines. Precision can only be guaranteed if the machines stay in top form. You need CNC machining services people who know your operations and requirements and can provide you with the expert assistance that you need. They need to be responsive so that there is no undue disruption to work operations and no unnecessary delays. If they fail to respond fast and accurately, efficient and smooth operations at your end may be difficult to sustain. How CNC works? We have seen that the NC machine works as per the program of instructions fed into the controller unit of the machine. The CNC machine comprises of the computer in which the program is fed for cutting of the metal of the job as per the requirements. All the cutting processes that are to be carried out and all the final dimensions are fed into the computer via the program. The computer thus knows what exactly is to be done and carries out all the cutting processes. CNC machine works like the Robot. Some of the common machine tools that can run on the CNC are: Lathe, Milling machines, Drilling Machine etc. The main purpose of these machines is to remove some of the metal so as to give it proper shape such as round, rectangular , etc. In the traditional methods these machines are operated by the operators who are experts in the operation of these machines.