电机和传动部件外文文献翻译、中英文翻译

Motor and Drive Parts

TIMING BELT REPLACEMENT

1, Power source must be connected to machine and turned on. Turn the power disconnect/lockout switch to the “O” (OFF) position and lock out. Allow machine to come to a complete stop, then press the “I” (START) button and hold for two seconds to verify that the machine will not start.

2, After the green guard locking switch status light illuminates (when all rotating parts are idle) rotate the latch handle on the gear compartment door and open the gear door.

3, Remove the belt guard by removing the hand knob that holds the guard (inside the gear compartment).

4, Loosen the two pinch fasteners in the jack shaft spindle assembly (Figure 50).

5, Loosen the motor mounting fasteners and slide the motor to release belt tension. Remove the belts (Figure51).

Figure 50—Loosen pinch fasteners in jack shat spindle assembly (1) Pinch Fasteners,(2) Jack Shaft Spindle Assembly

Figure 51 – Timing Belts(1)

TIMING BELT TENSION

1, Use the motor tension wrench to slide the motor and apply tension to the timing belts. The pin on the wrench fits in a hole on the support housing(Figure52). The pinch fasteners in the jack shaft spindle assembly must be properly tension both belts. Tighten the motor mounting fasteners, and then tighten the pinch fasteners in the jack shaft spindle assembly.

Figure 52 – Using the motor to apply belt tension. (1) Motor Tension Wrench

2, Replace belt guard and tighten with the hand knob.

3, Close and rotate latch handle connecting the gear compartment door and support housing.

Electrical Assembly

INSPECTION

W ARNING: In the event of an electrical problem, only a qualified electrician should inspect or repair the fault. Voltages dangerous to life exist in the starter enclosure! The power disconnect/lockout switch must be in the “O”(OFF) position. Live voltages are still present in the box even though disconnect is off. Always disconnect and lock out power source before beginning electrical inspection or repair.

The electrical assembly must be in good working condition before operating this machine. For a description of the amplifier and safety switch operation and method for checking this system. Electrical schematics are located in the starter enclosure. Refer to Figures53 and 54 and inspect the following:

Figure 53 –Starter enclosure interior with variable frequency drive. (1) Disconnect Switch, (2) Guard Locking Switch Power Disconnect, (3) Main Fuses, (4) Earthing Terminals, (5) Transformer, (6) Transformer Fuses Block, (7) Variable Frequency Drive, (8) Contactor, (9) Standstill Monitor, (10) Control Relay

Figure 54 – Starter enclosure interior, across-the-line start. (1) Disconnect Switch, (2) Guard Locking Switch Power Disconnect, (3) Main Fuses, (4) Earthing Terminals, (5) Transformer, (6) Transformer Fuse Block, (7) Overload Relay, (8) Contactor, (9) Standstill Monitor, (10) Control Relay

Starter enclosure: Inspect interior of starter enclosure for corrosion. If a significant amount of water accumulates in the bottom of the starter enclosure, check the breather drain. Breather drain should be free from obstruction. Excess water could also indicate an opening or loose fitting that allows water to enter the enclosure. Check all access points to the enclosure. Check gasket around door and window. Inspect push/pull stop button, “I”(START) push button assemblies, selector switches and pilot light assembly for damage or corrosion. Replace rubber boots and pilot light lens if damaged.

NOTE: Electrical components that fail due to water or chemical contamination are not covered under the warranty.

Fuses: Remove transformer fuses, located in the transformer fuse blocks. Check with an ohmmeter or continuity light. If one fuse is replaced, all others of that type fuse should also be replaced.

Machines equipped with variable frequency drive(VFD):The drive currently in use is the GPD315/V 7. If the digital display on the drive is not illuminated when the machine is energized, contact Urschel Laboratories.

Standstill monitor: Terminals should be tight and free from corrosion. Monitor must be replaced if damaged.

Power line filter (CE compliant machine with VFD): See the electrical assemblies illustrations in the “Parts” section of this manual for part locations.

Guard locking switches:Replace or straighten actuator key if it is damaged or bent. Check cords for cuts or abrasions. If the green guard locking switch status light does not illuminate when power to the machine is connected, contact Urschel Laboratories. Switch must be replaced if it has been forced open while locked. Use only new screws that are supplied with the switch. Manual release must be in “lock” position when removing and replacing lid( Figure 55).

Figure 55 – Guard Locking Switch. (1) Green Guard Locking Switch Status Light, (2) Guard Locking Switch Manual Release

Green status light must be inside the lens when replacing the lid. To maintain watertight features, securely tighten the seven screws for the lid until there is no gap between lid and switch assembly. Do not over tighten.

NOTE:The two screws located under the lid on the guard locking switch act as special dowel pins locking the switch assembly into place and must not be substituted.

Interrupt switch: Terminals should be tight and free from corrosion. Recommended torque is 5.0 inch pounds (80 inch ounces) or 0.56 Newton-meters. Check sensor, actuator and cord for damage. Switch should be replaced if any defect or damage is defected. Check switch alignment. Actuator must be aligned and within 1/32 (8mm) of sensor to complete safety switch circuit (Figure 56).

WARNING: Always perform the guard locking/interrupt switch system test before operating the machine.

Figure 56 –Interrupt switch sensor and actuator must be aligned and within 1/32”(8mm). (1) Sensor, (2) Actuator

V ARIABLE FREQUENCY DRIVE PROGRAMMING

A replacement variable frequency drive must have frequencies programmed after the drive has been installed into the electrical enclosure. Refer to the “Speed Chart” on your machine or on page 30 in this manual and program the replacement unit according to the following procedure.

WARNING: Starter enclosure must be energized in order to program the drive. Voltages dangerous to life exist when equipment is open and energized! Only a qualified electrician should inspect, install, or program variable frequency drive.

1, Turn power disconnect/lockout switch to “O”(OFF). Open starter enclosure door. Operate the power disconnect/lockout switch mechanism in the enclosure to turn power on.

2, Set the selector switches to the first drive frequency to be programmed. The frequency drive has a digital operator with a display (Figure 57). The display for the GPD 315/V7 drive will read the lowest setting allowed.

Figure 57 – FPD 315 Drive, digital operator. (1) Digital Display,(2) Numeral Change Key, (increase), (3) Numeral Change Key, (decrease), (4) Read/Write Key

3, Enter the speed in the display in hertz. Increase or decrease the value with the “numeral change” keys. See the chart for frequency settings.

CAUTION: Do not attempt to over speed the motor! Over speeding could create a safety hazard and cause excessive wear on machine parts. Under speeding will cause the motor to overheat.

4, With the value correctly displayed and flashing, press the “DATA/ENTER” or “ENTER” key. The display will stop flashing, indicating that the value has been entered.

NOTE:Altering preprogrammed speeds will permanently change these values. To return to original settings, follow steps 1-4.

5, Operate the power disconnect/lockout switch mechanism in the enclosure to turn power off. Close and lock starter enclosure door.

Knife Care

KNIFE CARE GUIDELINES

Knives should be inspected and sharpened or replaced at regular intervals depending upon operating conditions, type of product and hours of operation. Follow these guidelines for best

results:

1, Do not attempt to remove all defects from the knife edge by sharpening.This practice results in shortened knife life. Small defects will not affect knife performance.

2, New knives should not be installed beside worn knives. This arrangement may result in poor quality cuts. Keep all the knives from one spindle in a set and sharpen them together. Periodically check knife width or diameter to make sure all the knives in a set are the same size.

3, Recommended minimum dimensions: The following minimum dimensions are intended to give satisfactory results for most applications. However, each customer must look at the quality of cut on his product to determine at what point knives are resharpened beyond usefulness. The minimum dimensions stated are intended to give satisfactory results for most applications. Some customers may be able to give satisfactory results from knives ground smaller, but some may notice a deterioration in quality of out before the minimum size is reached. Measure crosscut knives from the cutting edge to the back of the knife unless otherwise noted; measure the diameter of circular knives unless otherwise noted.

SHARPENING EQUIPMENT

Urschel Laboratories manufactures machines to quickly and efficiently sharpen knives. The following machine are available;

Model WG honing machine is used to sharpen slicing knives and crosscut knives (straight cut only). For the Model DC, use workrest 33224 for 42281 and 42446 crosscut knives and slicing knife insert .Use workrest 33225 for 42460 crosscut knives. Use workrest 33256 for all other slicing knives.

Model CKG honing machine is used to place the best possible edge on circular knives. The Model CKG can be purchased from the factory ready to sharpen 3-1/2”circular knives for the Model DC. Honers that are not set up to sharpen 3-1/2” circular knives must have certain parts installed. Use the following procedure:

W ARNNING: Honers place an extremely sharp edge on knives; handle knives with care!

1, Make sure the honer is unplugged from the power source.

2, Install hone assembly, knife holder hub and edge roller stud for 3-1/2’’circular knives (Figure 58). The hone assembly (part number 33083) contains the hone bracket and internal parts, the shield and the honing wheel. The stud on the hone bracket is installed in the second hole from the motor shaft (4” knife position). The knife holder hub (part number 33081) is installed with the raised diameter facing out. The edge roller stud (part number 33023) is installed with the set screw in the second spot drilled hole from the outside end (Note that this part number has remained the

same but the part has been modified. The stud should have four spot drilled holes.) 3, Position the hone shield in as far as possible by loosening the screw and sliding the shield. Retighten the screw.

4. Pull the knife clamp hub out of the clamping position. Hold a knife against the knife holder hub. Loosen the set screw in the motor shaft hub and slide the hub and knife on the motor shaft until the knife just touches the honing wheel. Tighten the set screw.

5, Adjust the knife clamp if necessary. The knife clamp should hold the knife against the hub tight enough so that it cannot be rotated yet not so tight that it drives the motor back and distorts the base (the brake arm assembly must be properly adjusted to test for knife rotation). To adjust the knife clamp, loosen the two locking nuts and move the clamp in or out.

6, Place a knife in the honer and sharpen in the normal manner (see the Model CKG instruction manual for more information). If too much of the knife edge is removed, readjust the hub. If insufficient metal is removed, loosen the screw on the hone shield and slide the hone slightly forward against the knife edge.

BUFFING

WARNING: Only qualified trained personnel should buff knives. Use adequate eye and respiratory protection, and a properly guarded buffing wheel. Hold knife securely. Never attempt to catch a dropped knife! Should you drop a knife during the buffing operation, move away and let it tall.

When crosscut knives are sharpened by grinding, filing or honing, a slight wire edge may be produced. Buffing will remove this wire edge.

Install two to four 10" (254 mm) diameter buffing wheels side by side between flanges at least2" (51 mm) in diameter. Buffing wheels and bars of buffing compound are available from Urschel Laboratories (see “Tools", page67).

Turn on the buffer (3600RPM) and hold the bar of buffing compound firmly against the outside diameter of the buffing wheels to apply alight coating of compound. Apply compound frequently to obtain sharp edges quickly.

NOTE: If excess compound is applied, the wheel will harden, making it ineffective.

Should this occur, Use a buffing wheel rake, available from an industrial supplier, to soften the wheel.

When holding knives, be cautions and use a firm grip. Hold the knife firmly with the bevel side up, parallel with and just below the center line of the shaft of the buffer (Figure 58). Push the knife edge into the buffing wheel, penetrating the wheel 1/16"-1/8"(1.5-3mm). Move the knife endwise and buff the entire edge across the buffing wheel with a steady rapid movement in each direction. Several rapid passes are better than one or two slow ones. Do not hold the knife in one area of the buffing wheel too long as the edge may heat and burn. If a burr or wire edge remains, turn the knife over and buff with the bevel side down. Continue buffing, switching from side to side, until wire edge or burr is gone.

Sharpen all sides of crinkle knife edges by tipping the knife endwise at a slight angle, first in one direction and then in the other. Next, the knife is held straight and level to buff the remainder of the cutting edge.

With bevel side up, sharpen side surface of crinkle knife edge by tipping the knife endwise at a slight angle, first in one direction and then in the other. Next, the knife is held straight and level to

buff the remainder of the cutting edge.

Figure 58 –Model CKG honing machine set to sharpen 3-1/2”circular knives (1) Hone Bracket, (2) Mounting Position for Hone Assembly, (3) Knife Holder Hub, (4) Set Screw,(5) Edge Roller Stud (set screw seats in second hole), (6) Hone Shield, (7) Screw, (8) Knife Clamp Hub, (9) Locking Nuts, (10) Honing Wheel

Failure to obtain sharp edges by buffing may be caused by the following:

1, Edges may be too dull or blunt. Blunt edges must always be ground or filed to restore a bevel width and angle similar to that found on a new knife.

2, Knives must be correctly held against the buffing wheel (Figure 59).

3, Too little or too much buffing compound on the wheel.

4, Undersize buffing wheels. Discard the buffing wheels when they are worn to8-3/4" (222 mm) diameter.

Figure 59 – Correct position (top) and incorrect position (bottom) for knife during buffing .(1) Knife, (2) Buffing Wheel

PROBLEM CAUSE CORRECTION

Machine Does Not Start Power disconnect lockout switch is

in the "O"(OFF)position

Turn power disconnect lockout

switch to the "I"(ON) position. Manual release on either of the

guard locking switches is in the

"unlock" position

Turn manual release to the

"lock" position on both

switches, page 17.

Guard locking switch power

disconnect is in the

"O"(OFF)position

Turn guard locking switch

power disconnect to the

"I"(ON) position, page 54.

Push/pull stop button is not pulled

out after being pushed

Pull push/pull stop button out,

page 28.

Covers and guards not securely

closed

Make certain covers and

guards are securely closed.

Check for bent or twisted

brackets that will prevent

switches from lining up. See

"Covers and Guards",

pages34-35.

VFD fault or warning Not error code displayed on

VFD. Turn disconnect off.

电机和传动部件

同步带置换

1，电源必须与机器连接并打开。将电源的断开/锁定档切换到“ 0 ” （关闭）的位置，并锁定。使机器完全停止，然后按下“I” （开始）按钮，并保持两秒钟，以验证该机器将无法启动。

2，在绿色防护装置锁定开关状态指示灯发亮后（当所有旋转部件闲置），旋转齿轮室门的键柄，打开齿轮室门。

3，通过移动支撑防护装置的手柄来拆除带防护装置（内齿轮室）。

4，松开转轴组件的两个夹紧固件（图50 ）。

5，松开电机装备固件，滑动电机，释放皮带张力。拆除带（图51）。

图50 —转轴上的夹紧固件，（1）夹紧固件，（2）转轴

图51 —同步带（1）

同步带张力

1，用机动紧张扳手下滑电动机和有紧张力的同步带。扳手的锁销与支撑外壳上的小孔配合适当（图52 ）。转轴组件上的夹紧固件必须留适当的紧张力，带也一样。拧紧电机垫板紧固件，然后夹紧转轴上的夹紧固件。

2，更换带防护装置并扳手拧紧。

3，关闭并旋转连接内齿轮室和支撑外壳的键柄。

图52 —用机动紧张扳手来调节带的张紧力（1）电动张紧扳手

电气装配

检验

警告：如果只是在电力方面的问题，一个合格的电工应去检查或修复故障。启动装置表面上带有对人体有危害的电压！电源断开/锁定开关必须打在“0”（关闭）的位置。尽管开关是断开的，但是机壳上仍然有残留电压。必须断开并锁定电源，然后再开始电器检查或修理。

操作这台机器前必须保证电气装配是在良好的工作条件下。为了对操作放大器和安全开关、检查这系统方法的描述，将电气原理图贴在启动装置箱表面上。参阅图53和54，并检查以下内容。

起动装置外壳箱：检查起动装置外壳箱的内部，看看有没有已腐蚀的地方。如果有大量的水积聚在起动装置底部，检查通气的水流失，通气孔应畅通无阻。过多的水可能暗示设备有漏洞或宽松的情况，以至于让污水流入箱体。检查所有与箱体链接的地方。检查门窗周围的垫片。检查推/拉停止按钮，“I” （开始）按钮组件，选择开关和装配上的指示灯是否损坏或腐蚀。如果损坏了的话就用胶靴和标灯透镜来替换。

图53 —带变频器的启动装置箱内部（1）分离开关，（2）护罩紧固分离开关，（3）主要保险丝，（4）接地端，（5）变压器，（6）变压器保险盒，（7）变频器，（8）接触器，（9）停顿显示器，（10）控制继电器

图54 —启动装置箱内部，交叉线的起始点（1）分离开关，（2）护罩紧固分离开关，（3）主要保险丝，（4）接地端，（5）变压器，（6）变压器保险盒，

注意：被水或化学污染损坏的电器元件，不在保修范围以内。

保险丝：拆除变压器保险丝座上的变压器保险丝。观察欧姆表或串联的灯。如果一个保险丝更换，其他所有该类型的保险丝也应更换。

机器配备了变频驱动器（VFD显示）：目前，驱动器一般使用的是315 /V7 。设备通电后，如果驱动器上的数字显示仍未发亮，就联系Urschel实验室。

停顿监测：终端设备应保持紧凑和不受腐蚀。如果检测器被损坏了，就必须更换。

电源线滤波器（VFD显示）：见手册上部分章节里的电器组件插图。

防护罩锁定开关：如果促动器键损坏或弯曲，更换或拉直。检查电线是否有破口或磨损的情况。设备接通电源后，如果绿色防护开关状态指示灯不照亮，联系Urschel实验室。如果强行打开了开关，而一段时间后又自动关闭，那必须更换开关。只要使用开关提供的新螺丝钉。当拆除和更换箱盖时，手动解锁装置必须在“锁定”的位置（图55）。

图55 —防护罩固定开关（1）绿色防护罩固定开关状态指示灯，（2）防护罩手动解锁

更换盖子时，绿色状态指示灯必须在更换镜头里面。为了保持水密功能，尽量用力拧紧盖子的七个螺丝钉，直到盖子和开关组件之间没有间距为止，但千万不能拧得太紧。

注意：两个螺丝位于盖子下面的保护闸开关上，以起到用专门合销来控制锁定开关组件在一定位置的作用，这种合销绝不能用其他组件来来取代。

中断开关：终端设备应保持紧凑和不受腐蚀。建议扭矩为5.0英寸磅（80英寸盎司）或0.56牛顿/米。检查传感器、驱动器和电线的损坏情况。如开关有任何缺陷，应及时更换。检查开关是否对齐。推进器必须在传感器里面的1/32（8毫米）处，以完成安全开关电路（图56）。

警告：操作该机器前一定要进行保户闸/中断开关系统的测试。

图56 —传感器和推进器必须成一线，并推进器必须在传感器里面的1/32（8毫米）处（1）传感器，（2）推进器

变频驱动器的设计

驱动器已安装到电器外壳后，要更换变频驱动器就必须得有频率设计。在设备上或手册中的30页都涉及到“速率图”，根据下面的程序设计它的替换单位。

警告：为了设计驱动器，必须给起动机外壳提供电压。当设备运行和供电时，它上面带有对生命危险的电压！只有合格的电气技师才能检查，安装，或设计变频驱动器。

1，将电源断开/锁定开关切换到“ O”（关闭），打开起动机外壳门，将电源断开/

锁定开关接到外壳里面的机器上，打开电源。

2，设置一个编好了驱动频率程序的选择开关，频率驱动器有一个操作标记的数字显示（图57）。将可以从这台GPD315/V7驱动器上的显示器上读出允许设置的最低值。

图57 —FPD 315 驱动器，数字式操作标记（1）数字显示，（2）数字变动键（增加），（3）数字变动键（减小）,(4) 读/写键

3，输入的速率时显示的是赫兹。用数字键增加或减少数值，从图表中观察频率设置。

警告：不要尝试让电动机超速！超速可能造成安全隐患，使机器部件过磨损，超速运行还将导致发动机过热。

4，当数值正确的显示并闪烁时，按下“ DATA/ENTER”键或“ Enter”键，该显示器将停止闪烁，这表明该数值已输入。

注意：改变预先设定好的速度将永久地改变这些值，要返回到原来的设置，请按照遵循步骤1-4。

5，将电源断开/锁定开关打在开断位置，关闭起动机外箱的门，并锁紧。

刀具维护