Introduzione
The Mitutoyo 102 series outside micrometer is a precision measuring instrument designed for accurate outside diameter (OD) measurements. It features a vernier scale for precise readings and a ratchet thimble mechanism to ensure uniform pressure, leading to consistent and repeatable measurements. Its tapered frame allows for measurements in narrow slots and tight spaces. The micrometer is constructed with a durable baked enamel finish and carbide-tipped measuring faces for wear resistance, ensuring long-term reliability and accuracy.
Figure 1: Mitutoyo 102-707 Ratchet Thimble Micrometer, showing its main components.
Informazioni sulla sicurezza
- Handle the micrometer with care to avoid dropping or impacting it, which can affect its accuracy.
- Do not apply excessive force when tightening the thimble or spindle lock, as this can damage the mechanism.
- Keep the measuring faces clean and free from dust, oil, or debris to ensure accurate readings.
- Store the micrometer in its protective case when not in use to prevent damage and maintain calibration.
- Avoid exposing the micrometer to extreme temperatures or humidity.
Componenti e dimensioni del prodotto
The Mitutoyo 102-707 micrometer consists of a frame, anvil, spindle, sleeve, thimble, and ratchet stop. Understanding these components is crucial for proper operation.
Figure 2: Technical drawing illustrating the key dimensions and components of the micrometer.
Impostare
- Disimballaggio: Carefully remove the micrometer from its protective case.
- Pulizia: Before first use, gently wipe the measuring faces and other parts with a clean, lint-free cloth. If necessary, use a small amount of instrument cleaning fluid.
- Calibrazione zero:
- Ensure the measuring faces are clean.
- Slowly turn the ratchet thimble until the spindle makes contact with the anvil. Continue turning until the ratchet slips 2-3 times, indicating proper measuring force.
- Check the zero point. The zero line on the thimble should align perfectly with the datum line on the sleeve. If not, use the provided spanner wrench to adjust the sleeve until alignment is achieved. For models with a setting ring, use the setting ring to calibrate to the specified dimension.
Figure 3: Demonstrating the zero calibration process using a setting ring (not included with all models).
Istruzioni per l'uso
- Tenere il micrometro: Hold the micrometer firmly by the frame, ensuring your hand does not affect the measurement by transferring heat.
- Posizionamento del pezzo in lavorazione: Place the workpiece between the anvil and the spindle.
- Effettuare una misurazione:
- Rotate the thimble (or speeder) to bring the spindle close to the workpiece.
- Once the spindle is near the workpiece, use the ratchet stop (or friction thimble) to apply consistent measuring force. Turn the ratchet until it clicks 2-3 times. This ensures uniform pressure and repeatable measurements.
- Engage the spindle lock to secure the measurement position before reading.
Figure 4: Micrometer in use with a stand, providing stability for precise measurements.
- Lettura della misura:
- Read the main scale on the sleeve (millimeters).
- Read the sub-scale on the sleeve (0.5mm increments).
- Read the thimble scale (hundredths or thousandths of a millimeter), noting the line that aligns with the datum line on the sleeve.
- Sum these values to obtain the final measurement.
Manutenzione
- Pulizia: After each use, wipe down the micrometer with a clean, soft cloth to remove any dust, oil, or fingerprints. Pay special attention to the measuring faces.
- Lubrificazione: Periodically apply a thin film of rust-preventative oil to unpainted metal surfaces, especially the spindle, to prevent corrosion. Avoid over-lubrication.
- Magazzinaggio: Always store the micrometer in its original protective case in a dry, temperature-stable environment. Ensure the spindle is not fully closed to prevent stress on the measuring faces.
- Controllo della calibrazione: Regularly check the zero point calibration. If frequent adjustments are needed, or if accuracy is suspected, professional calibration may be required.
Risoluzione dei problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Letture imprecise | Dirty measuring faces; improper zero calibration; excessive measuring force; worn components. | Clean faces; re-calibrate zero; use ratchet stop correctly; inspect for wear (contact support if worn). |
| Mandrino difficile da girare | Dirt or debris in threads; lack of lubrication; spindle lock engaged. | Clean threads; apply light lubricant; disengage spindle lock. |
| Ratchet stop slips too easily/not enough | Problema al meccanismo interno. | Contattare il servizio assistenza Mitutoyo per la riparazione. |
Specifiche
| Caratteristica | Dettaglio |
|---|---|
| Numero di modello | 102-707 |
| Allineare | 0-25mm |
| Graduation / Resolution | 0.001mm |
| Precisione | +/-0.002mm |
| Materiale | Carbide (measuring faces) |
| Dimensioni del prodotto | 7.87 x 2.36 x 1.57 inches; 6.35 ounces (packaging) / 0.98"L x 0.98"W (product) |
| Produttore | Mitutoyo |
| Paese di origine | Giappone |
Garanzia
Mitutoyo products are manufactured to high standards and are typically covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions applicable to your Mitutoyo 102-707 Ratchet Thimble Micrometer, please refer to the warranty card included with your product or visit the official Mitutoyo websito. Conservare la prova d'acquisto per eventuali reclami in garanzia.
Supporto
For technical assistance, service, or inquiries regarding your Mitutoyo 102-707 Ratchet Thimble Micrometer, please contact Mitutoyo customer support. You can find contact information and additional resources on the official Mitutoyo websito o tramite i loro distributori autorizzati.
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