CN110238772A - A multi-degree-of-freedom clamp - Google Patents

Abstract

The invention belongs to the field of clamps, in particular to a simple clamp with multiple degrees of freedom. According to the invention, the inner wall of the sleeve at the opening of the connecting sleeve is provided with a circlip groove, the connecting sleeve is axially fixed with the connecting shaft by the circlip, and the first hand tightening nut is arranged on the connecting sleeve, and the connecting sleeve is connected by the first hand tightening nut. The sleeve is fastened on the connecting shaft; the diameter of the cylinder on the upper part of the connecting shaft is smaller than that of the cylinder sleeved in the sleeve connecting piece; the intermediate shaft connects the connecting shaft with the first fixture fixing block; the connecting shaft includes the intermediate shaft mounting hole , the installation hole of the hand nut, the middle shaft is installed in the middle shaft installation hole, the second hand nut is installed on the connecting shaft through the hand nut installation hole, and the middle shaft and the connecting shaft are circumferentially fixed by tightening the second hand nut. The clamp of the invention has a simple and compact structure, can realize the rotation of the clamp with multiple degrees of freedom, is suitable for various clamps, simple and convenient to operate, and low in cost.

Description

A multi-degree-of-freedom clamp

technical field

The invention belongs to the field of clamps, in particular to a simple clamp with multiple degrees of freedom.

Background technique

Most of the clamps in the prior art are simple in structure, have only one degree of freedom, and have low flexibility. A few clamps have a high degree of freedom but have a complex structure and high cost. It is necessary to design a simple clamp with multiple degrees of freedom and low cost. of.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the present invention provides a simple clamp with multiple degrees of freedom. The invention can adjust the relative position of the first clamp fixing block and the sleeve connecting piece, so as to realize the multi-degree-of-freedom rotation of the clamp.

The technical scheme of the present invention is: a multi-degree-of-freedom clamp, comprising a connecting sleeve, a first hand-tightening nut, a sleeve connecting piece, a second hand-tightening nut, a connecting shaft, a jacking wire, a first clamp fixing block, a second The fixture fixing block, the long bolt, the intermediate shaft and the circlip, and the bottom of the sleeve connecting piece has threaded holes; it is characterized in that: the inner wall of the sleeve at the opening of the connecting sleeve is provided with a circlip groove, and the connecting sleeve is connected to the connecting shaft through the circlip For axial fixation, the first hand tightening nut is set on the connecting sleeve, and the connecting sleeve is fastened on the connecting shaft by the first hand tightening nut; The body diameter is small; the intermediate shaft connects the connecting shaft with the first fixture fixing block; the connecting shaft includes the intermediate shaft mounting hole, the hand-tightening nut mounting hole, the intermediate shaft is installed in the intermediate shaft mounting hole, and the second hand-tightening nut is installed by the hand-tightening nut The hole is installed on the connecting shaft, and the intermediate shaft and the connecting shaft are fixed circumferentially by tightening the second hand nut; the bottom of the first fixture fixing block is semi-cylindrical, the second fixture fixing block is semi-cylindrical, and the second fixture fixing block A second clamp hole is arranged on the upper part, a threaded hole is arranged at the bottom of the first clamp fixing block corresponding to the second clamp hole, and the long bolt is fixedly connected to the threaded hole at the bottom of the first clamp fixing block through the second clamp hole.

According to the multi-degree-of-freedom clamp as described above, it is characterized in that the circlip restricts the axial movement of the connecting shaft.

According to a multi-degree-of-freedom clamp as described above, it is characterized in that: the first clamp fixing block is provided with a first clamp hole, the intermediate shaft passes through the first clamp hole, and the top wire passes through the first clamp fixing block to connect the middle Axle is fixed.

The multi-degree-of-freedom clamp as described above is characterized in that: the semi-cylindrical shape of the second clamp fixing block is provided with threaded holes, and the semi-cylindrical hole at the bottom of the corresponding first clamp fixing block is provided with threaded holes.

Compared with the prior art, the beneficial effects of the patent of the present invention: when the present invention is in use, the connecting shaft can be rotated circumferentially by loosening the first hand-tightening nut; the intermediate shaft can be circumferentially rotated by loosening the second hand-tightening nut. Rotation; by changing the shape of the auxiliary fixture block, it can be adapted to the installation of different fixtures; the whole fixture has a simple and compact structure, can realize the rotation of the fixture with multiple degrees of freedom, is suitable for a variety of fixtures, is simple and convenient to operate, and has low cost.

Description of drawings

Fig. 1 is the structural representation of the present invention;

2 is a cross-sectional view of the intermediate shaft, the connecting shaft and the first fixture fixing block in the present invention;

3 is a schematic diagram of the connection between the first clamp fixing block and the intermediate shaft of the present invention;

4 is a schematic structural diagram of a second fixture fixing block of the present invention;

FIG. 5 is a schematic structural diagram of a connecting shaft in the present invention.

Description of reference numerals: connecting sleeve 1, first hand-tightening nut 2, sleeve connector 3, second hand-tightening nut 4, connecting shaft 5, intermediate shaft mounting hole 51, hand-tightening nut mounting hole 52, top screw 6 , The first clamp fixing block 7, the first clamp hole 71, the second clamp fixing block 8, the second clamp hole 81, the threaded hole 82, the long bolt 9, the intermediate shaft 10, the retaining spring 11.

Detailed ways

In order to facilitate the understanding and implementation of the present invention by those of ordinary skill in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to illustrate and explain the present invention, but not to limit it. this invention.

As shown in Figures 1 to 5, a multi-degree-of-freedom clamp of the present invention includes a connecting sleeve 1, a first hand-tightening nut 2, a sleeve connecting piece 3, a second hand-tightening nut 4, a connecting shaft 5, and a jack screw 6. The first fixture fixing block 7, the second fixture fixing block 8, the long bolt 9, the intermediate shaft 10 and the retaining spring 11; there are threaded holes at the bottom of the sleeve connector 3, and the threaded hole of the sleeve connector 3 can be connected with the mechanical arm. or other actuators for fixed connection. The inner wall of the sleeve at the opening of the connecting sleeve 1 is provided with a circlip groove, the connecting sleeve 1 is arranged on the connecting shaft 5, the connecting sleeve 1 is axially fixed with the connecting shaft 5 by the circlip 11, and the circlip 11 restricts the connecting shaft 5 axial movement. A first hand tightening nut 2 is provided on the connecting sleeve 1 , and the connecting sleeve 1 can be fastened on the connecting shaft 5 by the first tightening nut 2 .

As shown in Figure 5, the diameter of the cylinder on the upper part of the connecting shaft 5 is slightly smaller than the diameter of the cylinder sleeved in the sleeve connector 3, and its range is preferably between 0.05mm and 0.1mm to ensure that there is no looseness between them.

As shown in FIGS. 1 to 5 , the intermediate shaft 10 connects the connecting shaft 5 with the first clamp fixing block 7 . The connecting shaft 5 includes an intermediate shaft mounting hole 51, a hand-tightening nut mounting hole 52, the intermediate shaft 10 is installed in the intermediate shaft mounting hole 51, and the second hand-tightening nut 4 is installed on the connecting shaft 5 through the hand-tightening nut mounting hole 52, and passes through the mounting hole 52. Tightening the second thumb nut 4 can fix the circumferential direction of the intermediate shaft 10 and the connecting shaft 5 .

As shown in FIG. 1 to FIG. 5 , the bottom of the first fixture fixing block 7 of the present invention is semi-cylindrical, the second fixture fixing block 8 is semi-cylindrical as a whole, and the second fixture fixing block 8 is provided with a second fixture hole 81 , The bottom of the first fixture fixing block 7 is provided with a threaded hole corresponding to the second fixture hole 81 , and the long bolt 9 is fixedly connected to the threaded hole at the bottom of the fixing block 7 through the second fixture hole 81 . The first clamp fixing block 7 is provided with a first clamp hole 71 , the intermediate shaft 10 passes through the first clamp hole 71 , and the jack wire 6 passes through the first clamp fixing block 7 to fix the intermediate shaft 10 . A threaded hole 82 is provided on the semi-cylindrical shape of the second clamp fixing block 8 , and a threaded hole can also be provided on the semi-cylindrical shape at the bottom of the corresponding fixing block 7 , so that different auxiliary clamps can be fixed on the two semi-cylindrical cylinders through the threaded hole 82 . in the cavity formed by the shape.

When the present invention is in use, the connecting shaft 5 can be rotated along the connecting sleeve 1 by loosening the first hand tightening nut 2, so that the posture of the clamp fixed on the sleeve connecting piece 3 can be adjusted; by loosening the second hand tightening The nut 4 can make the intermediate shaft 10 rotate in the circumferential direction relative to the connecting shaft 5, so as to adjust the relative position of the first clamp fixing block 7 and the sleeve connecting piece 3; so as to be fixed on the first clamp fixing block 7 and the second clamp The clamp on the block 8 and the manipulator connected to the sleeve connector 3 can be connected at any angle. The invention can adapt to the installation of different clamps by changing the shape of the auxiliary clamp block; the whole clamp has a simple and compact structure, can realize the rotation of the clamp with multiple degrees of freedom, is suitable for a variety of clamps, has the characteristics of simple and convenient operation and low cost.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (5)

1. A multi-degree-of-freedom clamp, comprising a connecting sleeve (1), a first hand-tightened nut (2), a sleeve connector (3), a second hand-tightened nut (4), a connecting shaft (5), a top The wire (6), the first fixture fixing block (7), the second fixture fixing block (8), the long bolt (9), the intermediate shaft (10) and the circlip (11), the bottom of the sleeve connector (3) has A threaded hole; it is characterized in that: the inner wall of the sleeve at the opening of the connecting sleeve (1) is provided with a circlip groove, the connecting sleeve (1) is axially fixed with the connecting shaft (5) by the circlip (11), and the connecting sleeve (1) is axially fixed with the connecting shaft (5). A first hand tightening nut (2) is arranged on the barrel (1), and the connecting sleeve (1) is fastened on the connecting shaft (5) by the first hand tightening nut (2); the cylinder on the upper part of the connecting shaft (5) The diameter is smaller than the diameter of the cylinder sleeved in the sleeve connecting piece (3); the intermediate shaft (10) connects the connecting shaft (5) with the first fixture fixing block (7); the connecting shaft (5) includes the intermediate shaft mounting hole (51), the hand-tightening nut mounting hole (52), the intermediate shaft (10) is installed in the intermediate shaft mounting hole (51), and the second hand-tightening nut (4) is installed on the connecting shaft ( 5), fix the intermediate shaft (10) and the connecting shaft (5) circumferentially by tightening the second hand nut (4); the bottom of the first fixture fixing block (7) is semi-cylindrical, and the second fixture fixing block ( 8) It is semi-cylindrical, the second fixture fixing block (8) is provided with a second fixture hole (81), the bottom of the first fixture fixing block (7) is provided with a threaded hole corresponding to the second fixture hole (81), and the long bolt (9) ) is fixedly connected to the threaded hole at the bottom of the first clamp fixing block (7) through the second clamp hole (81). 2 . The multi-degree-of-freedom clamp according to claim 1 , wherein the retaining spring ( 11 ) restricts the axial movement of the connecting shaft ( 5 ). 3 . 3. A multi-degree-of-freedom clamp according to claim 1, characterized in that: the first clamp fixing block (7) is provided with a first clamp hole (71), and the intermediate shaft (10) passes through the first clamp The hole (71), the top wire (6) passes through the first clamp fixing block (7) to fix the intermediate shaft (10). 4. A multi-degree-of-freedom clamp according to claim 1, characterized in that: a threaded hole (82) is provided on the semi-cylindrical shape of the second clamp fixing block (8), and the corresponding first clamp fixing block is provided with a threaded hole (82). A threaded hole is provided on the semi-cylindrical bottom. 5. The multi-degree-of-freedom clamp according to claim 1, wherein the diameter of the cylinder on the upper part of the connecting shaft (5) is 0.05mm-0.1 mm smaller than the diameter of the cylinder sleeved in the sleeve connector (3). between mm.