1、Manufacturing Standards C Chip conveyor / coolant lubricant channels 1. Definition Chip conveyors are used to transport of cast, iron, steel, and/or aluminium chips that occur either dry or in a coolant lubricant mixture. This Ford Manufacturing Standard is for the design, production and installatio
2、n of coolant lubricant channels and chip conveyors. It contains requirements and design instructions ensuring uniformity in offers, production, maintenance and safety at work. These regulations consist of the pages 1 to 19. Planning, production and operation are subject to the Wasserhaushaltsgesetz
3、(WHG - Water Supply Law). In addition, the Ford Manufacturing Standard U-KXOOl is obligatory. The manufacturer must be authorized according to WHG 19 Para. 12. Welding certificates have to be submitted. 2. Technical description 2.1 Flushing channels with nozzles for the transport of chips These chan
4、nels are used for the return of coolant lubricants when machining (short chips) with central grinding systems. They should be used only if accessibility is ensured in as much as blockages that might occur can be removed without disassembling the machines. The chips are swept away due to the high flo
5、w speed of the coolant lubricant- Tech. data: Width 200 to 500 mm Minimum depth 250 mm Inclination 1.0 % flow capacity of flushing nozzles 80-l 10 Vmin at 3 bar Every 5 to 8 m, steps of about 65 mm have to be fitted. To increase flow velocity, detachable nozzles are installed at the steps. In the cu
6、rves, the sheet metal covers are welded leakproof against liquid penetration (see page 81. 2.2 Scraper conveyor This conveyor is used for the transport of ripper and shear chips (cast, steel, aluminium, etc.). February 1995 Chip conveyor U-CHOO 1 Page 1 / 19 Coolant lubricant channels Manufacturing
7、Standards c Transport of the chips in the channel is effected by means of flight bars, which are installed on the conveyor chains at dividing distances and drawn over the channel floor. The scraper conveyor essentially consists of two conveyor chains with scrapers made of St. 37 welded to them (alte
8、rnatively scrapers can be bolted and secured). The conveyor chains are covered in the chip inlet area. To ensure the flow of the coolant lubricant, the channel is manufactured and routed with a 0.5% inclination. The coolant lubricant outlet is located in the lowest channel area. The chips are retain
9、ed by an insert screen fitted to the outlet. Alternatively, a wedge wire may be required. To ensure a parallel arrangement of the scrapers, the chain wheels have to be keyed in the tooth centre. Locking bushes are not approved. The tensioning station for chip conveyors where the transfer takes place
10、 below the factory floors upper edge has to be fitted with a waterproof sheet metal tank at the front side for the location of the gearmotor. in critical cases, the chain drive has to be located above the floor. 2.3 Paddle conveyor This conveyor is used for the transport of curly chips. The transpor
11、t of the chips in the channel is effected by a forward and backward movement of the push rod with the paddles that open and close due to friction. The push rod is divided into two parts and consists of the- rigid part and a conveyor chain. The forward and backward movement is achieved by a reversibl
12、y operating gearmotor via the conveyor chain that runs in a narrow guide. Stroke 6400 mm, paddle overlap at least 2100 mm, conveyor speed ca. 4 m / min. To ensure the flow of coolant lubricant, the channel is manufactured and routed with a 0.5 % inclination. The outlet is located in the iowest chann
13、el area. The chips are retained by an insert screen that is fitted to the outlet. The last chip inlet has to be located at least 7000 mm from the end of the channel. The push rod with the paddles made of St. 37 is located either at the right or left side of the channel (seen in transport direction).
14、 It is always installed at the opposite side of the coolant lubricant outlet. If the chips are let in only from above, it is preferably located on the left side. However, if there are, for example, also side-inlets, the push rod is located at the channel wall with none or the fewest inlets. If neces
15、sary, the planner can order the unit with detachable retainers to protect the push rod from coming-off. February 1995 Chip conveyor U-CHOOI Page2/19 Coolant lubricant channels Manufacturing Standards C 2.4 Push rod conveyor (Harpoon conveyor) This conveyor can be used for the transport of long curly
16、 chips also short ripper and shear chips. The conveyor length can be up to 100 m. A push rod is moved forward and backwards in a laterally barbed conveyor tank. This movement is produced by a hydraulic cylinder. The push rod must contact the cylinder in the centre. As an exception, e.g. with very .a
17、ggressive coolant lubricants, the cylinder has to be installed above the push rod. The push rod is fitted with drivers of the plough type. During the forward stroke, the chips are transported to the outlet by the drivers. During the backward stroke, the chips are retained by the barbed hooks at the
18、channel walls, so that the push rod can be moved back through the chips. The size of the conveyor trench depends on the size of the chips to be transported. The standard width is 600 mm. To avoid dry running, an additional flushing nozzle has to be installed at the end of the channel. 3. Ekxwical de
19、sign The electrical equipment hasto meet the EN 60204 also the manufacturing standards U-EXOOl (Electrical equipment) and the User specification Programmable Logic Controllers (PLCs). Materials used, have to comply with: - Approved sources according to U-El - Approved Source List E-E for Great Brita
20、in Moreover, the following features have to be considered: - Transport intervals must be adjustable with wet chips conveyors - Operating conditions of the chip conveyors should be indicated by a multiple light for remote indication, source see paragraph F,U-El At the chip outlet, a short-time stop s
21、hould be installed ready to hand. The multiple light should not be affected when engaging the stop and will indicate Conveyor in operation. In the case of a conveyor breakdown due to a failure, the gearmflor will be switched off and the message *Conveyor failure will be indicated (must be acknowledg
22、ed). Effective power monitoring devices are used for control. Leakage probes with circuit amplifier have to be used. Each probe has to be wired separately to the control cabinet, and the failure shall ba indicated by the respective light on the main operating panel. If a complete coolant lubricant s
23、ystem is installed, this indication must be provided in addition to the error message display. An adequate number of emergency stops have to be installed. February 1995 Chip conveyor U-CHOOl Page3/19 Coolant lubricant channels Manufacturing Standards C 0 Backwards moving by operation “Hand” is neces
24、sary for each conveyor. Drive units, which are not visible from the control cabinet, should be provided with control units at the drive unit locations. 4. Regulations for the design and installation of coolant lubricant channels The channels have to be of the double-wall type and must be seal welded
25、. Before installation, a leak check of the channel or the channel pieces has to be carried out. ATTENTION: Welding during production and installation may only be carried out by welders with welding qualification E-Bllg DIN 8560. Before starting installation; the names of the welders and the respecti
26、ve welding ID will be reported to the department that has passed the order. Each weld made during installation has to be marked with the welders ID. 0 The company executing the order has to be authorized according to 19 WM. The 1 and 19 a to e WHG and national regulations have to ba observed, too. 4
27、.1 S XiOB Paddle Conveyors Section A-B I I , Return gude SI Section E-f 30x15 Cwer Plate Cheese-head-w Transfer chain DIN 8168 I60 MC 112 Connection of paddle to chain 6 - 3CFOB 61 February 1995 Chip conveyor U-CHOOl Page 14/ 19 Coolant lubricant channels Manufacturing Standards C 10 Paddl e Conveyo
28、rs Connection of paddle to thrust bar a FOB-Design j- - + I 1 I 6 I - , 3CFOB 6: I 6 - XFOB 61 55 - I Light desi gn I I Heady design LFR t-t-1 - 0 February 1995 Chip conveyor U-CHOo1 Page 15 / 19 Coolant lubricant channels Manufacturing Standards c Paddle Conveyors j FOB- Design Paddles I -1 I Light
29、 design , I I HeaOx8 St52 Heavy design - . 3 =3 2xtJao February 1995 Chip conveyor U-CHOO 1 Page 17/ 19 Coolant lubricant channels Manufacturing Standards C Ford Inventory - Number manufacturing date Manufacturer Type of installation Installation Subcontractor (where applicable) Short description Lo
30、cation : Rant Column Location Names of the welders Welders ID compsw Sign Certification of the mamfacturer ( 1 Even after the repair - welding faulty wefded joints have been found. The Ford - Engineer, Mr. I Mrs was infommd on Place Date Supervisor of the Manufacturer February 1995 Chip conveyor U-C
31、HOOl Page 18 / 19 Coolant lubricant channels 0 Manufacturing Standards C Ford Inventory - Number manufacturing date Manufecturer Type of installation Installation Subcontractor (where applicable) Certification of the final leak check In presence of the Ford - Engineer and the manufacturers Superviso
32、r the complete unit has been finally leak - checked by filling the channel spaces with water. ( 1 No leaks have been detected. ( 1 Leaks hava been detected. Applied actions : place Date Supen&or of the Msnufacturer Ford - Engineer February 1995 Chip conveyor U-CHOOl Page 19/ 19 Coolant lubricant channels
