Two Roller Machine 은
Two Roller Machine 타입 선접촉 시험기는




모델 TE 53에만 적용 – Block on Ring 전용 시험장치


모델 TE 73에만 적용 – 토로이달 변속기(Toroidal CVT) 시험장치
TE 72에만 적용 – 압연롤러 시험장치 – 하부롤러 X축 변위 이동제어

-선접촉 타입-견인력 시험기 -미끄럼 구름 비율 제어형(SRR)
-모델별 특징 차이 설명
-에너지 절약형 파워 제어 시스템 (Circulating Power System) : 한쪽 모터가 발전기처럼
작동하면 → 그 전력이 DC 링크를 통해 → 반대편 모터로 전달됨, 두 모터가 전력을 서로 주고받는 재순환 구조
-축간 거리 가변 조절형 구조 : Variable Shaft Center Distance (테스트 롤러 직경 선택에 있어 최대한의 유연성을 제공)
HYPOID GEAR(하이포이드 기어);
차동 기어의 일종으로, 테이퍼 롤러 베어링에 지지된 구동 피니언 기어는 링 기어의 중심보다 낮게 설치되어 있는 스파이럴 기어(spiral gear) 형식이다.
피니언 기어를 크게 제작할 수 있어 접촉률이 크고 원활하게 회전하여 감속비도 크게 할 수 있는 장점이 있다. 또한 피니언 기어 위치를 낮출 수 있어 프로펠러 샤프트(추진축) 위치와 차체의 지상고도 낮출 수 있다.

General Description:
The TE 74 Two Roller Machine is for the study of traction, wear and rolling contact fatigue under conditions of heavily loaded, lubricated, pure rolling and rolling and sliding. The machine incorporates two motors, one to provide the input power and one to absorb the transmitted power.
To achieve the necessary high loads with small diameter rollers, hence high contact pressures, the test rollers our mounted on shafts with bearings on either side, in the “fully supported” configuration. As a consequence, spindle bearings are exposed to, and must run in, the test lubricant.
To achieve satisfactory performance in line contact, the mounting/loading arrangement has adjustable alignment, with the upper specimen shaft carried on a pivoted arm and with a spherical bearing incorporated in the pivot axle. Axial alignment is achieved by indexing the pivot axle. Loading is achieved by means of a servo controlled pneumatic bellows actuator with force transducer feedback.
The lower specimen shaft is carried in fixed bearings. The drive to the lower roller incorporates an in-line torque transducer for measuring the input torque to the system. It should be noted that the traction measurement is thus subject to parasitic losses associated with the roller spindle bearings. These losses are small but may be quantified by running the unit under conditions of zero slip at different speeds and temperatures.
A vibration sensor is provided for detecting surface failure. The upper roller housing is electrically insulated and slip rings are provided on the roller shafts for electrical contact resistance measurement.
A lubricant service module is fitted as standard incorporating a sump tank with immersion heater, delivery pump, scavenge pump and oil to water heat exchangers for cooling.
The motors are a.c. and powered by conventional vector drives allowing precise control of speed. Power is re-circulated electrically via a common d.c. link between the drives, upstream of the frequency inverter stages. Total power requirement is thus limited to the system losses. For control purposes, one drive is designated as master with the second drive deriving its speed set point, adjusted for the required slip ratio, from the master drive.
Design Variants:
Two versions of the machine are available. The TE 74S (standard capacity) incorporates two 5.5 kW motors, a shaft centre distance of 40 mm and 12 kN loading system, whereas the TE 74H (high capacity) has two 30 kW motors, a shaft centre distance of 70 mm and 30 kN loading system.
Drive Configuration:
The lower roller spindle is connected to an in-line torque transducer via a cardan shaft; the transducer is connected to a lay shaft by a coupling and the lay shaft connected to the motor by pulley and timing belt. The upper roller spindle is connected to a lay shaft by a cardan shaft and the lay shaft connected to its motor by pulley and belt drive.
Control and Data Acquisition:
The TE 74 has PC based sequence programmable control and data acquisition. This is provided by an integrated Serial Link Interface Module and COMPEND 2000 software running on a host PC, operating under Windows. Data is stored to hard disc in standard spread sheet compatible file formats (.csv or .tsv).
Tests are defined by a sequence of steps, each step containing set-point, data recording rates and alarm level information. Set-points may be adjusted by step change or ramp. The test sequence is followed unless interrupted by the operator or an alarm. Set-points may also be adjusted manually using on screen toggles.
Controlled Parameters:
Motor speed
Motor speed difference–>(두개의 롤러 각각에 대하여, 미끄럼/구름 비율 PC에 의한 자동제어 가능)
Applied load
Test fluid temperature
Test duration
Measured Parameters
Motor speed
Motor speed difference
Applied load
Transmitted torque
Lubricant inlet temperature
Test bath outlet temperature
Vibration sensor output
Electrical contact resistance
모델 TE74 기어 피로 시험기의 표준버전과 고하중 버전의 접촉압력 차이
Operating Envelope – TE 74S(표준버전, 최대 12kN 하중):
Characteristic showing motor torque-speed characteristic (available torque) compared with roller generated torque, assuming traction coefficient of 0.1, with corresponding reduction in applied load. Note that the full load can be applied at full speed in pure rolling or under conditions where the traction coefficient is less than 0.08. 기본 샘플 롤러 표준 40mm on 40mm 사양하고, 두개의 롤러 직경 총합이 80mm 이하 사용. 최대 차이는 15 on 65mm.

Flat Rollers5 mm contact width

Crowned Rollers 4 GPa Contact Pressure

Note that as the minimum specimen diameter is 15 mm, a diameter of greater than this is required for a crowned roller sample machined on a 15 mm shaft. The practical minimum diameter for a crowned roller is thus 20 mm.
Services:
Electricity:380/415V, three phase plus neutral, 50/60 Hz, 15 kW
Clean, dry air:4 cfm at 8 bar (120 psi)
Mains water and drain:10 l/min (typical)
Operating Envelope – TE 74H(고하중 버전, 최대 하중 30kN)
Characteristic showing motor torque-speed characteristic (available torque) compared with roller generated torque, assuming traction coefficient of 0.1, with corresponding reduction in applied load. Note that the full load can be applied at full speed in pure rolling or under conditions where the traction coefficient is less than 0.08. 기본 샘플 롤러 70mm on 70mm 사용하고, 두개의 롤러 직경 최대 합이 140mm 이하 사용해야 함. 최대 차이는 30 on 110mm.
Assuming 70 mm diameter rollers and traction coefficient of 0.1, the maximum permissible load at maximum speed is 27.3 kN.
Flat Rollers 110 mm contact width

Flat Rollers5 mm contact width

Crowned Rollers 4 GPa Contact Pressure

Note that as the minimum specimen diameter is 30 mm, a diameter of greater than this is required for a crowned roller sample machined on a 30 mm shaft. The practical minimum diameter for a crowned roller is thus 40 mm
Services:
Electricity: 380/415V, three phase plus neutral, 50/60 Hz, 75 kW
Clean, dry air: 4 cfm at 8 bar (120 psi)
Mains water and drain: 10 l/min (typical)
1999년 개업 이후, 지난 30여년간
최첨단 장비들을 국내에 소개 및 판매 기술 지원하여 왔으며, 또한 이기술을 바탕으로 일부 품목 제조를 통하여 국산화에도 노력하여 왔습니다. 앞으로도 더욱 노력하여 국내 기술 발전에 이바지 하도록 하겠습니다.
서울특별시 송파구 송파대로 167, 문정역 테라타워 A동 6층 619호. (문정동 651) 우편번호 05855
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서울 지하철 8호선 문정역 3번 출구에서 도보 약 300m 거리에 위치해 있으며, 지하 보행 통로로도 연결되어 있어 우천 시에도 편리하게 방문하실 수 있습니다.
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