JPH04125308A - T-slot nut capable of fixing position - Google Patents

Abstract

PURPOSE:To realize the temporary fixing of a T-slot nut by drilledly providing a fixing tap besides a bolt tap, and threadedly inserting a setscrew in the fixing tap so deep as to abut on the lower face of the T-slot. CONSTITUTION:Fixing taps 12 are vertically piercedly provided on both the sides of a bolt tap 11 at the middle of a T-slot nut 1, and setscrews 2 shorter than the height L of the T-slot nut 1 are threadedly inserted in the fixing taps 12 and screwed so as to abut the bottom of the T-slot. Thus the T-slot nut 1 can be fixed to the T-slot at an optional position through optional pressing force, and used for the T-slot set in any of vertical or horizontal states.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a T-slot nut, in which it is desired to prevent blind movement within the T-slot even when the bolt is removed.
It is widely used for slot nuts.

[Conventional technology]

T-slot nuts were developed to fix parts of various shapes and sizes onto base materials with bolts, so they remain in place when the bolts are tightened, and when the bolts are loosened. It was thought that it would be good if they could move freely in the state. However, when removing the object to be fixed and re-fixing another member, it is necessary to remove the bolt, and when the bolt is removed, the T-slot nut easily shifts in the T-slot.The t1 bolt is fixed to the T-slot nut. It is necessary to align the T-slot nut with the bolt each time. In order to solve this problem, we developed No. 4A, a T-slot nut that does not shift in the T-slot even when the bolt is removed.
The one shown in Figure 4B was developed.

That is, as shown in FIGS. 4A and 4B, the improved conventional product has a plate spring attached to the lower protruding edge 10 of the T-slot nut 1' having the bolt tap 11 in the center in the front-rear direction when viewed in the sliding direction. 4 is installed in a form that covers the lower surface of the slot nut 1 so that the contact surface S1 of the slot 1' and the lower surface of the leaf spring 4 is a distance d, and the T-slot nut 1' is attached to the T-slot nut 1'.
When the plate spring 4 is inserted into the groove (FIG. 2A, 3), the plate spring 4 is deformed under pressure and the dimension d is deformed to a small extent, so even if the bolt (not shown) is removed from the bolt tap 11, In order for the leaf spring 4 to press the lower surface of the T-slot, a pressure contact force is applied between the contact surface S1 of the protruding edge 10 of the T-slot nut 1' and the fastening surface of the T-slot (Fig. 2A, 32). However, the T-slot nut 1' is prevented from slipping inadvertently.

[Problem to be solved by the invention]

In general, the T-groove (Fig. 2A, 3) relative to the substrate (Fig. 2A, B)
) is usually formed by a two-step process of cutting a narrow vertical groove and then cutting a wider part below. 4th A due to variations.

The pressing force of the leaf spring 4 shown in Fig. 4B is not constant throughout the T-groove.

Further, the T groove may be in a horizontal state, that is, the base material B is in a horizontal state, or may be in a vertical state.
When applying a T-slot nut to the groove, it is necessary to increase the pressing force of the leaf spring, but the pressing force of the leaf spring cannot be adjusted during use.

The present invention solves the above-mentioned problems with a T-slot nut of a new construction.

[Means to solve the problem]

For example, as shown in FIG. 1, a fixing tap 12 is drilled through a T-slot nut 1 in addition to the conventional bolt tap 11, and a set screw having a length Ll shorter than the length L of the fixing tap 12 is inserted. 2 is screwed into the fixing tap 12 so that the lower end of the set screw 2 comes into contact with the lower surface 31 of the T-slot 3.

The T-slot nut 1 is lifted within the T-slot by the downward protrusion of the set screw 2 from the fixing tap 12, and a pressing force F acts between the contact surface S1 and the fastening surface 32 within the T-slot. , the T-slot nut 1 is prevented from slipping within the T-slot. Further, the pressing force F for preventing slipping of the T-slot nut can be arbitrarily adjusted by adjusting the screwing degree of the set screw 2.

Since the set screw 2 is shorter than the fixing tap 12, it does not interfere with the object to be fixed on the upper surface of the T-slot nut 1.

〔Example〕

This was implemented as a T-slot nut used to attach a cover to the vertical axis of an industrial robot shown in FIG. 3, which has a T-slot with a nominal size of 10 (width W at the narrow part is 10 mm).

As shown in FIGS. 1, 2A, and 2B, the overall shape of the T-slot nut has the same cross-sectional shape as a conventional standard T-slot nut (not shown), with only the length being increased. That is, it consists of a main part with a width W+ (Wl < W 1) and a lower protruding edge part 10 for closely sliding in the longitudinal groove of the narrow width W3 of the T-slot 3, and the overall height is , convergence WIO
The protruding edge 10 has a height hl, and its upper surface forms an abutment surface S1 as in the conventional example.

In addition, there is a bolt tap 11 that penetrates vertically in the center,
On both sides, there is a diameter smaller than the diameter of the bolt tap 11 (5mmφ).
) fixing taps 12 and 12 were drilled through the top and bottom.

The set screw 2 has a length Ll smaller than the height L of the T-slot nut, and has a rotation hole C provided on its upper surface.

The T-slot 3 is a conventional standard groove with a nominal dimension width W+(1
0 mm), and the wide groove portion 30 has a width W. and the height is hs, and the dimensional relationship between the T-slot nut and the T-groove is W+ <W
s , WIo<W2O, h 1 <hs.

The obtained T-slot nut is fitted into the vertical T-slot 3 on the side surface of the robot's vertical axis shown in Fig. 3, and then the set screw 2 is screwed into the fixing tap 12 at the fixed position, as shown in Figs. 2A and 2B. As shown in the figure, press the lower end of the screw 2 against the groove lower surface 31, and then tighten the nut 1.
Each T-slot nut was fixed in advance by generating a pressing force F of the contact surface Sl against the groove outer surface 32. Next, a bolt is inserted into the cover as the member to be fixed, and the bolt is firmly screwed into the bolt tap 11 of the T-slot nut.
The cover was firmly fastened by increasing the pressing force F between the contact surface S1 and the fastening surface 32 using the fastening force of the bolt.

When it was necessary to remove the cover, the bolts were loosened and removed, but even with the bolts removed, each T-slot nut 1 did not slip within the T-slot due to the action of its setscrew 2, and therefore it could not be removed again. Even when installing covers of the same size, alignment of the T-slot nut 1 was not necessary.

If it becomes necessary to move the T-slot nut, loosen the set screw 2 using a screwdriver, move it to the appropriate position, and then tighten the set screw 2 again to move the T-slot nut to its new position. Fixation was achieved.

In this embodiment, the fixing tap 12 and the locking screw 2 are used at two locations, but the intended purpose can be achieved with just one location.

〔Effect of the invention〕

The T-slot nut 1 is provided with a fixing tap 12 outside the bolt tap, and the set screw 2 can be screwed into the fixing tap 12 in an adjustable manner, so regardless of the accuracy of the lower surface 31 of the T-slot 3, No matter what state the lower surface 31 is in, the T of the T-slot tap 1 can be adjusted at any position by any pressing force F.
Temporary fixation within the groove 3 is possible, and a single mass-produced T-slot nut can be applied to either a vertical T-slot or a horizontal T-slot.

In addition, if the set T screw 2 is temporarily fixed in a semi-fixed state, the T-slot nut can be moved when replacing the fixed object (in this example, the cover) without operating the set screw and the screw. This can be done by simply pushing the nut from side to side with a rod like this.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the T-slot nut of the present invention. FIG. 2A is a side view of the T-slot nut of the present invention fitted and fixed in the T-slot, and FIG. 2B is a side view taken along the line B-B in FIG. 2A.
FIG. FIG. 3 is a side view showing the T-slot nut of the present invention in use. FIG. 4A is a perspective view of a conventional T-slot nut.
FIG. 4B is a sectional view of the same. DESCRIPTION OF SYMBOLS 1... T-slot nut, 2... Top picture screw, 3... T-slot, 4... Leaf spring, 10... Projecting edge, 11... Bolt tap, 12... Fixing Tap, 30...Wide groove part, 32...Fixing surface, 31...Groove lower surface, S,...Abutment surface.

Claims (1)

[Claims] 1. Fixing tap (12) outside the bolt tap (11)
into the T-slot (3), and screw the set screw (2) with a dimension (L_1) shorter than the length (L) of the fixing tap (12) into the fixing tap (12). A T-slot nut that can be fixed in position so as to come into contact with the lower surface (31).