JPH0465251B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for preventing displacement of a joining member, which is effective for highly accurate attachment of a joining member of a machine, particularly a long member.

Prior Art In FIG. 4, if an external force F greater than the tightening force N x friction coefficient μo is applied to parts simply joined by bolts or the like, displacement occurs. For this reason, as a measure to prevent slippage, methods such as fitting the concave and convex portions with interference or driving in a taper pin have been conventionally adopted.

Problems to be Solved by the Invention When fitting parts with interference between uneven parts requires high precision on the order of several μm, it is necessary to make the processing accuracy of the fitting part the same or higher. This makes it difficult to process, increases machining time, and increases costs. In addition, when driving a taper pin, if the cross-sectional area of the taper pin is small, the taper pin will be deformed by external force and misalignment will occur, so there is a problem that a taper pin with a large cross-sectional area must be driven or the number of taper pins must be increased. Ta.

Means for Solving the Problem Sliding occurs due to an external force between a right-angled wall surface of a convex portion formed on one side of the joint surface and a right-angled wall surface of a concave portion formed on the other side corresponding to the convex portion and containing the convex portion. It is filled with a material that has sufficient strength against external forces by hardening in the direction in which it occurs.

Embodiment 1 A first embodiment of the present invention will be described below based on the drawings. In Fig. 1, the mounting surface 1 has a convex fitting part cut out on the bed 1 at approximately the center position.
A rail 2 having a concave fitting part on the right-angled wall surface 2a on the bottom surface 2a corresponding to the convex fitting part on the right-angled wall surface and containing the convex fitting part on the bottom surface 2a is fixed by a plurality of bolts 3, and the fitting part is fixed by a plurality of bolts 3. The left side wall surface 2b of the concave fitting portion is the left side wall surface 1b of the convex fitting portion.
The right side wall surface 2c of the concave fitting part contacts with zero gap.
A large gap is provided between the right side wall surface 1c of the convex fitting part and the right side wall surface 1c of the fitting part. A filler 4 is injected into this gap. Filler 4 is a paste-like substance that can be injected or applied with a spatula, and when mixed with a hardening agent, it hardens at room temperature in 24 to 36 hours and has a static compressive strength of 1000 kg/
^cm2 , does not shrink during curing, and is chemically stable against water, mineral oil, synthetic oil, alkali, gasoline, etc. For example, this product is commercially available.
Low friction sliding surface material SKC3 manufactured by GLEITBELAG-TECHNIK can be used.

Function: Fix the rail 2 on the mounting surface 1a of the bed 1 with bolts 3 with the gap between the left side end surfaces 1b and 2b of the fitting portion being zero, and then fix the rail 2 on the right side wall surface 1c of the fitting portion,
Filling material 4 is injected into the gap between 2c using an injection tool without any gap. The filler 4 is gradually hardened by the hardening agent mixed in just before injection, and is completely hardened after 24 to 36 hours. A filler with zero shrinkage upon curing is used, so the gap is completely filled. Then, the rail 2 is attached to the bed 1 on the guide surface A.
Grinding is performed.

Note that the wall surfaces 1c and 2c are not particularly limited to the embodiment as long as they have a shape that produces resistance against external force.

Embodiment 2 In FIG. 2, the same parts as in Embodiment 1 are denoted by the same reference numerals, and the explanation thereof will be omitted. The difference from the first embodiment is that a gap similar to the right side wall surfaces 2c and 1c is provided between the left side wall surface 2b of the concave fitting part and the left end surface 1b of the convex fitting part. The filler material 4 is also injected into the holes.

Function: The rail 2 is temporarily tightened with bolts 3 on the mounting surface 1a of the bed 1 with a gap between the left side walls 1b, 2b and the right side walls 1c, 2c of the fitting part.
The dimensions from the reference position to the guide surface A are accurately determined using a measuring instrument such as an indicator, and when the guide surface accuracy is accurately determined, the bolts 3 are completely tightened and the rail 2 is fixed. Next, a filler is injected into the gaps on both sides, and the filler hardens to complete the process.

This method uses bed 1 and rail 2 that are completed separately.
It has the advantage that it can be completed simply by assembling, and the grinding process after assembly can be omitted.

Effects As detailed above, in the present invention, a filler that hardly changes in volume during curing is injected into the gap between the wall surfaces provided at right angles to the external force on both side members of the joint surface, and the filler is cured. This has the effect that it is possible to prevent displacement of the elongated joining member due to external force using a simple method that does not require difficult machining, and that high precision can be maintained for a long time immediately after assembly and adjustment of the elongated member.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention;
FIG. 2 is a cross-sectional view showing a second embodiment of the present invention;
FIG. 3 is a cross-sectional view showing a conventional example. 1...Bed, 2...Rail, 4...Filling material.

Claims (1)

[Claims] 1. In a method for fixing joint members that are subjected to external forces that cause slippage, a right-angled wall surface of a convex portion formed on one side of the joint surface and a recess formed on the other side corresponding to the convex portion and containing the convex portion. A method for preventing slippage of joining members, characterized in that a material having sufficient strength against external forces is filled by hardening between the edges in the direction in which sliding occurs due to external forces with a right-angled wall surface.