CN218015801U - A Universal Spindle Nut Locking Fixture - Google Patents

Abstract

The utility model discloses a general type main shaft nut locking tool, the fixture comprises a fixture body, the tool body is cylindric structure, and the equidistant mounting hole that is used for fixed torque spanner that is equipped with of circumference on its lateral wall, be equipped with the first assembly structure that matches with tooth abdomen lock nut on a terminal surface of tool body, another terminal surface of tool body is equipped with the second assembly structure that matches with axial lock nut. The utility model discloses a general type main shaft nut locking tool can match multiple lock nut, and combines the torque spanner to carry out the accurate control of pretightning force.

Description

A Universal Spindle Nut Locking Fixture

technical field

The utility model relates to the field of machine tool spindles, in particular to a universal spindle nut locking jig.

Background technique

In order to meet the requirements of machining accuracy, the lathe spindle needs to be pre-tightened by the spindle lock nut to ensure the accuracy of the lathe spindle in the assembly process. When the spindle is assembled, the spindle lock nut needs to be screwed into the specified position on the spindle. A certain torque is applied to the spindle lock nut, so that the thread of the spindle lock nut and the external thread of the matching spindle are tightly occluded, so as to prevent the spindle lock nut from loosening.

Moreover, since the spindle lock nut itself cannot be directly connected with the torque wrench, the torque wrench cannot directly apply torque to the spindle lock nut, and the pre-tightening operation can only be performed manually. However, the current pre-tightening force of the spindle lock nut relies on The experience value of personnel assembly is controlled, there is no fixed quantitative standard, and a standard operation process cannot be formed, which is not conducive to the control of product quality and cannot be standardized.

Utility model content

The purpose of the utility model is to overcome the defects in the background technology, and provide a universal spindle nut locking jig, which can be matched with various locking nuts, and can be combined with a torque wrench to precisely control the pre-tightening force.

In order to achieve the above purpose, the utility model provides the following technical solutions: a general-purpose spindle nut locking jig, including a jig body, the jig body is a cylindrical structure, and a plurality of It is used to fix the installation hole of the torque wrench. One end surface of the jig body is provided with a first assembly structure matching with the tooth abdomen lock nut, and the other end surface of the jig body is provided with an axial lock nut. Matching second assembly structure.

Preferably, the first assembly structure is a plurality of tooth bars, which are distributed around the end face at equal intervals on the circumference, and their distribution positions correspond to the locking grooves on the tooth belly lock nut.

Preferably, the tooth bar is in the shape of a square bar, and the tooth bar is inserted into the locking groove of the belly lock nut during assembly.

Preferably, the second assembly structure is an assembly cavity formed by indentation on the end surface of the jig body, and a plurality of fixing holes are arranged at equal intervals on the circumference of the assembly cavity, and the axial lock nut is snapped into the assembly cavity, and the fastener Screw through the fixing hole into the threaded hole of the axial locknut.

Preferably, the shaft center of the jig body is provided with a through shaft hole for the main shaft to pass through.

Compared with the prior art, a universal spindle nut locking jig disclosed by the utility model has the following beneficial effects:

There are multiple installation holes on the side wall of the jig to facilitate the connection of the torque wrench, so that the precise control of the pre-tightening force can be realized through the torque wrench. The other end face is provided with an assembly cavity with a fixing hole to realize the cooperation with the axial lock nut, so that the jig can match different types of spindle lock nuts.

Description of drawings

Fig. 1 is the structural diagram of the utility model embodiment;

Fig. 2 is a side view of one end of the utility model embodiment;

Fig. 3 is another side view of the utility model embodiment;

Fig. 4 is the sectional view of the utility model embodiment;

Fig. 5 is the use state diagram of the utility model embodiment;

Fig. 6 is a structural diagram of the belly lock nut for the embodiment of the present invention;

Fig. 7 is the assembly diagram of the embodiment of the utility model and the tooth belly lock nut;

Fig. 8 is a structural diagram of the axial lock nut targeted by the embodiment of the present invention;

Fig. 9 is an assembly drawing of the utility model embodiment and the axial lock nut;

Fig. 10 is a cross-sectional view of the assembly of the utility model embodiment and the axial lock nut;

In the figure: 1-fixture body, 2-installation hole, 3-axis hole, 4-tooth rod, 5-assembly cavity, 6-fixing hole, 7-spindle, 8-lock nut, 9-torque wrench, 10 - flank lock nut, 11 - axial lock nut, 12 - threaded assembly hole, 13 - locking groove, 14 - second threaded assembly hole, 15 - first threaded hole, 16 - fastener.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 4, a general-purpose spindle nut locking jig disclosed in this embodiment realizes the locking operation of the spindle nut, and its structure includes a jig body 1, which is a cylindrical structure , a plurality of installation holes 2 are arranged at equal intervals on the circumference of the side wall, and the installation holes are used for assembling torque wrenches. The plurality of installation holes can realize the installation of torque wrenches in different positions. The axis of the fixture body is provided with a penetrating Shaft hole 3, the jig is set on the main shaft of the machine tool through the shaft hole during assembly, and assembled with the locking jig. In order to cooperate with the lock nut, one end of the jig body is provided with a first assembly structure to cooperate with the tooth belly lock nut , the other end of the jig body is provided with a second assembly structure, which cooperates with the axial lock nut.

Specifically, the first assembly structure is a plurality of tooth bars 4, which are distributed around the end face at equal intervals around the circumference. The tooth bars are in the shape of square bars, and their distribution positions correspond to the locking grooves on the tooth belly lock nut , Insert the tooth bar into the locking groove of the tooth belly lock nut during assembly.

The second assembly structure is an assembly cavity 5 formed concavely on the end surface of the jig body, and a plurality of through fixing holes 6 are provided at equal intervals on the circumference of the assembly cavity. During assembly, the axial lock nut is snapped into the assembly cavity. The matching fasteners are screwed into the threaded holes of the axial lock nuts through the fixing holes.

As shown in Figure 5, when the locking jig of the present invention is assembled, it is set on the main shaft 7, and the end face is matched with the lock nut 8. At the same time, a torque wrench 9 is assembled in the mounting hole of the jig, and the rotation torque Use a wrench to tighten the lock nut according to the pre-tightening force requirements.

A universal spindle nut locking fixture disclosed by the utility model can be matched with various locking nuts, such as tooth belly locking nut 10 and axial locking nut 11. The structure of the tooth belly locking nut is as follows: As shown in Figure 6, there is a threaded assembly hole 12 in the center, and locking grooves 13 are arranged at intervals on the outer wall. When assembling, insert the tooth bar on one end of the jig into the corresponding locking groove, thereby effectively preventing the locking nut from Relative rotation with the jig (as shown in Figure 7), the structure of the axial lock nut is shown in Figure 8, the center of which is provided with a second threaded assembly hole 14, and the second threaded assembly hole is surrounded by Through the first threaded hole 15, when assembling, insert the axial lock nut into the assembly cavity on the other end surface of the jig, and at the same time, cooperate with the fastener 16 to pass through the fixing hole of the jig and screw it into the first threaded hole. Both are fixed (as shown in Figures 9-10).

The jig of the utility model can realize the cooperation of various locking nuts, and is versatile, and the locking operation cooperates with the torque wrench to realize the precise adjustment of the pre-tightening force, thereby forming a standard quantitative operation and ensuring the assembly quality.

Finally, it should be noted that: the above-mentioned embodiment is only a preferred embodiment of the present utility model, and is not a limitation to the technical solution of the present utility model. It should be considered as falling within the protection scope of the utility model patent.

Claims (5)

1. A general-purpose spindle nut locking jig, characterized in that it includes a jig body, the jig body is a cylindrical structure, and a plurality of installations for fixing the torque wrench are arranged at equal intervals on the circumference of the side wall. hole, one end surface of the jig body is provided with a first assembly structure matching the tooth belly lock nut, and the other end surface of the jig body is provided with a second assembly structure matching the axial lock nut. 2. A general-purpose spindle nut locking fixture according to claim 1, characterized in that: the first assembly structure is a plurality of tooth rods, which are distributed around the end face at equal intervals on the circumference, and their distribution positions are the same as those of the tooth rods. Corresponds to the locking groove on the belly lock nut. 3. A universal spindle nut locking fixture according to claim 2, characterized in that: the tooth bar is in the shape of a square bar, and the tooth bar is inserted into the locking groove of the tooth belly lock nut during assembly. 4. A general-purpose spindle nut locking jig according to claim 1, characterized in that: the second assembly structure is an assembly cavity formed by indentation on the end surface of the jig body, and the circumference of the assembly cavity is equally spaced. There are multiple fixing holes, the axial lock nut is snapped into the assembly cavity, and the matching fastener is screwed into the threaded hole of the axial lock nut through the fixing holes. 5 . The general-purpose spindle nut locking fixture according to claim 1 , wherein the axis of the fixture body is provided with a through hole for the spindle to pass through. 6 .

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