DE10004746A1 - Clamping and rotating device has base bush clamped in lathe, into which fitting mandrel is pushed - Google Patents

Abstract

The three-part clamping and rotating device is fitted to a lathe for renovating worn piston rod seals. The base bush is clamped in the lathe and the fitting mandrel (2) is pushed into it. The piston rod seals are pushed over the mandrel. The gland is then pushed over the mandrel and loosely screwed to the base bush. The mandrel is removed and the seals are machined to the required measurement.

Description

• 1. The lock play of piston rod seals is followed and on the Paßdorn (Fig. 1 u. Figure 2), the diameter (Fig. 1/1) is 0.5 mm smaller than the piston rod, placed on Schloßspielmaß.
• 2. The apparatus (basic sleeve, Fig. 3, Fig 5, 6) is centered in the lathe clamped (Fig. 3/7) and.
• 3. The Paßdorn (Fig. 1, Fig 2), the diameter (Fig. 1/2) 0.03 mm is less than the φ of the base sleeve (Fig. 3/5) is in the on direction (basic bushings) inserted.
• 4. The previously reworked seals (Figure 1) are pushed to the bottom of the φ (Fig. 3/3) with spring on the Paßdorn (Fig. 1/1) and the lock match is aligned.
  Addition to 4.
  Depending on the thickness and the desired number auszudrehender seals the depth of measurement (Fig. 3/3) and the height of the measure must be (Fig. 2 intermediate gauge of measure 5 u. 6) can be calculated. Example picture 5 u. 6 .
• 5. The spectacles (clamping lid, Fig. 2) is pushed over the Paßdorn (Fig. 1) on the base bushing (Fig. 3), by means of the dimensions (Fig. 2/4 and Fig. 3/3) is fixed and with Tighten the screws until the seals can no longer move.
• 6. The dowel ( Fig. 1) is pulled out. The screws are tightened so that the seals are firmly clamped. Since the inside dimension of the seals is slightly smaller than the nominal dimension, it is now turned back to the nominal dimension.

The lap play, the pressure of the spring and gas, and the sealing surface is OK again and the seal can be installed again become.

By using several dowels ( Fig. 1, the dimension 1 changes), the base sleeve and the glasses can be used for several diameters of the piston rod seals ( Fig. 5 , 6 ).

Piston rod seals (stuffing box inner parts Fig. 1 ) maintain their function until the lock clearance of the multi-part seals is zero due to abrasion of the piston rods. In this case, the gas and spring pressure is no longer transferred to the surface of the piston rod to be sealed. The seal (gland) leaks and the old seals must be replaced with new ones.

Through a tool developed by me (clamping and turning device to recondition worn piston rod seals) the seals are refurbished several times.

The tool is a turning tool.

The tool can be of different diameters, fitting the piston rod seals to be built.

The height of the basic sleeve is determined by the number of rifles rotating piston rod seals.

The mandrel pin is slightly smaller than the intended one Inclusion of the basic rifle.

The upper diameter of the mandrel is smaller than the nominal diameter the piston rod seals.

The glasses serve as a pressure flange for the piston rod seals.

The height of the pressure plate can vary depending on the number of pistons rod seals can be determined.

Groundbox and glasses can fit different diameters of the passport thorn top can be used. So that thereby several piston rods seals can be processed.  

Declaration of drawings

Fig.

1 / Fit pin

1

The mandrel dimension is im slightly (0.5 mm) smaller than the nominal dimension of the seals.

2

The diameter of the mandrel pin is 0.03 mm smaller than that Diameter of

Fig.

3 /

5

,

3rd

The height of the mandrel pin is approx. 1 mm smaller than the depth of the Diameter

Fig.

3 /

5

,

4

Total height of the mandrel.

Fig.

2 / glasses

1

Outside diameter dimension (like

Fig.

3 /

1

)

2

Pitch circle dimension (like

Fig.

3 /

2

)

3rd

Internal dimension

4

Outside dimension for printing area (0.5 mm smaller than

Fig.

3 /

3rd

)

5

Glasses thickness

6

Total height of the glasses thickness and printing area

Fig.

3 / basic rifle

1

Outside diameter dimension (like

Fig.

2 /

1

)

2

Bolt circle with threaded hole (bolt circle as

Fig.

2 /

2

)

3rd

Diameter 0.5 mm larger than

Fig.

2 /

4

4

Diameter for the undercut when turning

5

Diameter for the mandrel pin (0.03 mm larger than

Fig.

1/

2

)

6

drilling
The hole is used to relax the dowel.

7

Diameter for clamping in the lathe

8th

Hole height

9

Measure

9

minus measure

8th

is 1 mm deeper than the dimension of

Fig.

1/

3rd

10th

Length of the diameter

7

11

Overall height dimension

12th

minus measure

11

is equal to the depth for the piston rod seals

12th

Overall height

Claims (1)

Three-part clamping and turning tool that is clamped in a lathe for reprocessing worn piston rod seals,
characterized by
that the base sleeve ( Fig. 3) is clamped in a lathe
and then the dowel ( Fig. 1) is pushed ge into the main sleeve,
the piston rod seals are pushed over the mandrel,
to then slide the glasses ( Fig. 2) over the mandrel and screw them to the base sleeve for slight tension,
pull out the mandrel and turn the seals to size.