JPH03565Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a T-nut that is used together with a T-groove provided in the bed of a machine tool when a workpiece, jig, etc. is attached to the bed of a machine tool. In particular, the present invention relates to a T-nut that can be held at any desired position in a T-slot.

[Background technology and its problems]

Conventionally, when attaching an object such as a workpiece to a mounting surface such as the bed of a machine tool, the mounting surface has a plurality of T grooves, that is, a mounting groove with an inverted T-shaped cross section with a wide part inside. are formed parallel to each other, and a T-nut slidably fitted into this T-groove is moved along the T-groove, and a bolt of a predetermined size is screwed into this T-nut at an appropriate position for attaching the object to be attached. Then, by tightening this bolt, the part to be mounted is fixed at an arbitrary position on the mounting surface. Therefore, it is possible to adapt to various shapes of objects to be attached, and furthermore, it is also possible to adjust the mounting position, the number of attachment points, etc. according to the material of the object to be attached and the purpose of attachment.

Generally, such a T-nut has a cross-sectional shape that is almost the same as the cross-sectional shape of the T-slot into which it is fitted, and is a screw that can be screwed into a bolt of a predetermined size from the surface side of the mounting surface while it is inserted into the T-slot. A hole is provided. Here, the dimension of the cross-sectional shape of the T nut is T
The size is slightly smaller than the cross-sectional dimension of the groove, and when it is fitted into the T-groove, there is a slight play, allowing it to easily slide within the T-groove.

However, while the T-nut can be moved freely by hand in the process of attaching an object to a mounting surface, it has the disadvantage that the T-nut moves unnecessarily when screwing in a bolt. In other words, the worker performing the installation must hold down the T-nut as necessary when inserting the bolt, especially if the mounting surface is not horizontal and the T-slot is vertical, like the face plate of a cylindrical grinder. In cases where the T-nut is installed in a
It is necessary to insert the T-nut into the nut, which is extremely difficult and inefficient, and there are problems such as the possibility of the T-nut falling.

[Purpose of invention]

An object of the present invention is to provide a T-nut that can be moved to any desired position in a T-slot provided on a mounting surface for mounting an object, and can maintain that position.

[Means and actions for solving problems]

In the present invention, a frictional force imparting member capable of slidingly contacting the inner surface of the T groove is provided on the T nut that is slidable by being fitted into the T groove, and a frictional force imparting member and the T groove are connected to each other. An adjustment mechanism is provided to adjust the frictional force generated between the two. Here, as the frictional force imparting member, for example, a spring langeer is used, which can be fitted into a hole formed in a T-nut and has a movable tip that is normally protruded by an internal spring. It is possible. and,
As the adjustment mechanism, a structure can be used in which the frictional force imparting member is screwed onto a T-nut so that it can move forward and backward in the direction of pressure contact with the T-groove. A T-nut equipped with such a frictional force applying member can be prevented from moving unnecessarily even if it receives some external force within the T-slot, and can be moved along the T-slot by manual operation as necessary. It can be moved to any position, and if the adjustment mechanism is used to adjust the friction force between the friction force applying member and the T-groove to be slightly larger than the weight of the T-nut, the T-groove can be formed in the vertical direction. It is possible to maintain that position without falling even when The present invention aims to solve the above-mentioned problems by achieving the above-mentioned objects, eliminating danger during work, making work easier, and making it possible to improve work efficiency.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, a T-slot 3 extending in a direction perpendicular to the drawing is formed in a bed 2, which is a mounting surface on which an object 1 is mounted. A T-nut 5 having a slightly smaller cross-sectional shape that is almost the same as that of the T-slot 3 and having a bolt hole 40 into which a bolt 4 of a predetermined size can be screwed is slidably fitted into the T-groove 3. There is. The object to be mounted 1 has a mounting hole 10,
The bolt 4 inserted through this is screwed into the nut 5 fitted into the T-slot 3, and is fixed to the bed 2 by tightening.

In FIGS. 2 and 3, the T-nut 5 has a bolt hole 40 into which the bolt 4 can be screwed, as well as
Two screw holes 60 are provided to which spring plungers 6, which are frictional force imparting members, can be attached. The outer peripheral surface of this screw hole 60 is
A spring plunger 6 having a threaded portion 61 that can be screwed into the T-nut 5 is screwed into the spring plunger 6 and attached to the T-nut 5.

In FIG. 4, a cavity is formed inside the spring plunger 6, and a tip member 62 is provided at one end of the spring plunger 6. A spring 63 is provided with one end in contact with the member 62 and biased in the direction of protrusion. Further, the other end of the spring plunger 6 is provided with a receiving member that can contact the other end of the spring 63 and maintain its position, is screwed into the opening at the other end, and has a hexagonal key hole 65 on the surface side. 64 is installed.

In FIG. 5, a T-nut 5 having a spring plunger 6 is slidably fitted into the T-slot 3. Here, the spring plunger 6 is
The tip member 62 is adjusted to a position where it is pushed into the T-slot 3 and attached to the T-nut 5, and the position is determined by inserting a hexagonal key into the screw hole 60 from the surface side of the bed 2. The spring plunger 6 can be easily adjusted by fitting it into a hexagonal key hole 65 and rotating the spring plunger 6. Here, the threaded portion 61 of the spring plunger 6, the hexagonal key hole 65, and the threaded portion 6
The adjustment mechanism is constituted by the screw hole 60 of the T-nut 5 into which the T-nut 5 is screwed.

In this embodiment configured as above,
When the T-nut 5 is fitted into the T-slot 3, the tip member 62 of the spring plunger 6 is pushed inward. At this time, the tip member 62 pushed inside is urged outward by an internal spring 63, and this urging force presses the tip member 62 against the inner wall of the T-slot 3. Further, the T-nut 5 is urged in the opposite direction by the reaction force of this urging force, and is pressed against the opposing surface of the inner wall of the T-groove 3. Therefore, between the T groove 3 and the T nut 5,
Frictional force is generated by these pressure contacts, and the T-nut 5 does not move even with a slight external force. Note that this frictional force is applied to the spring plunger 6 by fitting a hexagonal key into a hexagonal keyhole 65 provided in the receiving member 64.
You can adjust the size to your desired size by rotating it and moving it up or down.

According to this embodiment, the T-nut 5 is
The spring plunger 6 can be moved to any position along the T-slot 3 by hand if necessary.
The frictional force generated by this has the effect of making it possible to maintain a desired position without moving unnecessarily even if some external force is applied. In addition, by making this frictional force a slightly larger value due to the weight of the T-nut 5, even when the T-slot 3 is in a vertical direction, it is possible to prevent it from falling and maintain its position, making it possible to maintain its position during work. In addition to eliminating danger, it also has the effect of making work easier and improving work efficiency.

Furthermore, by adjusting the position of the spring plunger 6, the frictional force can be adjusted.
The optimum frictional force for the work can be obtained, and in particular, this adjustment can be made very easily from the surface side of the bed 2 using a hexagonal key, and can be adjusted at any time during the work.

In the above embodiment, two spring plungers 6 were used as friction force applying members to the T-nut 5, but the number may be three or more, or one spring plunger, and the direction in which the tip member 62 is pressed is also the same as in the above embodiment. It is not limited to the inner wall of the T-groove 3. Furthermore, the frictional force applying member is not limited to the spring plunger 6, but may be any member that can press against the inner wall of the T-slot 3 and generate a predetermined frictional force. Further, the adjustment mechanism is not limited to one that adjusts the frictional force by adjusting the pressure contact position of the spring plunger 6, but also adjusts the position of the receiving member 64 to adjust the spring 6.
A structure may also be used in which the elastic force of the spring plunger 6 itself is adjusted by adjusting the compression amount of the spring plunger 6.

[Effect of idea]

As described above, the T-nut of the present invention has the advantage that it can be moved to any position along the T-groove provided on the mounting surface on which the object is mounted, and can maintain that position.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing essential parts of an embodiment of the present invention, FIG. 2 is a front view showing the T-nut of the embodiment, FIG. 3 is a side view of the T-nut of the embodiment, and FIG. The figure is a sectional view showing the spring plunger used in the embodiment, and FIG. 5 is a sectional view showing another main part of the embodiment. 1... object to be attached, 2... bed which is the mounting surface,
3...T groove, 4...bolt, 5...T nut, 6...
...Spring plunger as a frictional force imparting member, 40... Bolt hole, 60, 61, 65... Screw hole, threaded portion, hexagonal key hole constituting the adjustment mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An object to be attached is mounted via a bolt of a predetermined size that is slidably fitted into a T-groove formed on the mounting surface and screwed into the mounting surface from the surface side. In the T-nut that can be attached to a surface, a frictional force applying member that can slide into the T groove is provided, and an adjustment mechanism is provided for adjusting the frictional force generated between the frictional force applying member and the T groove. T-Natsu is characterized by (2) Utility model registration Claims Paragraph 1 is characterized in that the frictional force applying member is configured to be able to generate a frictional force slightly larger than the own weight of the T-nut between the T-slot and the T-nut. T Nats.