CN210233044U - Automatic tapping device of mechanical arm - Google Patents

Abstract

The utility model belongs to the automatic tapping equipment field aims at providing an arm automatic tapping device, and its technical scheme main points include the arm, are located the screw tap of arm tip, be equipped with two detachable construction at least between screw tap and the arm, the coaxial setting of two detachable construction.

Description

Automatic tapping device of mechanical arm

Technical Field

The utility model relates to a tapping equipment, in particular to automatic chasing bar of arm.

Background

Tapping is a common means for processing internal threads, and generally, manual tapping and mechanical tapping are adopted, and a common mechanical tapping adopts a motor to drive a screw tap, so that threads are formed on the inner wall of a hole of a part to be tapped.

At present, in order to obtain the internally threaded holes with different sizes, screw taps with different sizes are generally adopted, and the torque protection chuck clamps the screw taps with different sizes. Because the diameter of the screw tap is relatively small, when the force is not applied properly, the screw tap is easy to damage, and particularly, in the process of dismounting the screw tap from the torque protection chuck for many times, a gap or deviation exists between the screw tap and the torque protection chuck in a matching manner, so that the use is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic chasing bar of arm has the advantage that reduces the screw tap and is damaged the possibility when being applied to the not unidimensional screw hole of production.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an automatic tapping device of arm, includes the arm, is located the screw tap of arm tip, be equipped with two detachable construction at least between screw tap and the arm, two detachable construction coaxial settings.

By adopting the technical scheme, the detachable structure comprises the part connected with the screw tap, and the detachable structure is one of the parts, so that the times of detaching the screw tap and the torque protection chuck connected with the screw tap between the chuck can be reduced by additionally arranging the detachable structures at more positions, the abrasion between the screw tap and the torque protection chuck is reduced, and the screw tap and the torque protection chuck can keep a stable and reliable relative position relationship.

Furthermore, the detachable structure comprises a quick-change head connected with the mechanical arm, a collet chuck coaxially arranged with the quick-change head, and a torsion protection collet coaxially arranged with the collet chuck, wherein two ends of the quick-change head are detachably connected with the mechanical arm and the collet chuck respectively.

By adopting the technical scheme, when the screw taps with different sizes need to be replaced, the collet chuck and the torque protection chuck are directly disassembled, or the collet chuck and the quick-change head are disassembled, and the torque protection chuck and the screw taps do not need to be disassembled, and only the torque chucks with the screw taps with different sizes need to be replaced.

Furthermore, one end of the collet close to the quick-change head is provided with a connecting section extending into the quick-change head, the connecting section is in threaded connection with the inner wall of the quick-change head, and a sleeve ring used for improving alignment accuracy is further arranged in the quick-change head.

Through adopting above-mentioned technical scheme, among the threaded connection's the structure, two adapting unit's area of contact are greater than the plane centre gripping and are connected, can play firm connection effect, are difficult for rocking, and the lantern ring has played the effect of improving the precision simultaneously, makes the relative position relation between screw tap and other parts keep coaxial as far as possible.

Furthermore, the lantern ring includes the ring body, is located the ball of ring body towards inside one side of quick-change head, the ball rolls the setting on the ring body.

Furthermore, the inner diameter of the ring body is extended with a flanging used for preventing the balls from falling.

Furthermore, a groove is formed in one side, facing the inner wall of the quick-change head, of the ring body, a protruding strip falling into the groove is arranged on one side, facing the collet chuck, of the quick-change head, and the width of the groove is larger than that of the protruding strip.

By adopting the technical scheme, when the collet is arranged in the quick-change head, the part of the collet extending into the quick-change head is limited by the ring body firstly, so that the range of the collet capable of vertically and axially moving is reduced, and then the collet is aligned with the threads in the quick-change head, so that the threads of the inner part and the outer part can be more conveniently and more accurately meshed; if the annular body does not reduce the range of the circumferential movement of the collet chuck, the situations that threads are staggered and the collet chuck and the quick-change head deviate from being coaxial are more likely to occur when the inner threads and the outer threads are meshed, the installation is influenced by the situations, the times are more, the wear is easy to occur, and the precision of the inner threads and the precision of the outer threads are influenced.

Furthermore, all detachable structures are driven by the same rotary driving device in the using process, and the output shaft of the rotary driving device is coaxial with all detachable structures.

By adopting the technical scheme, the same rotary driving motor drives the coaxial driven parts, the same rotating speed can be provided for the driven parts, and the motion lag between the parts is not easy to occur.

Drawings

Fig. 1 is a schematic configuration diagram for embodying the entirety of the apparatus;

FIG. 2 is a schematic view of a coupling structure for embodying the quick change head and the collet;

FIG. 3 is a schematic diagram of a collar used to embody the quick-change head;

fig. 4 is a schematic view showing the relative positions of the balls and the ring body using the enlarged view of the portion a of fig. 3.

In the figure, 1, a mechanical arm; 2. a screw tap; 3. a detachable structure; 31. quickly replacing the head; 311. a collar; 311-1, a ball; 311-2, a ring body; 311-3, flanging; 311-4, a groove; 32. a collet; 321. a connecting section; 33. a torque force protection chuck; 4. a rotation driving device; 5. and (4) protruding strips.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The utility model provides an automatic tapping device of arm, includes arm 1, is located the screw tap 2 of 1 tip of arm, is equipped with two detachable construction 3 between screw tap 2 and the arm 1 at least, and in this embodiment, in order to reduce economic cost, detachable construction 3 sets up to two, the coaxial setting of these two detachable construction 3.

The detachable structure 3 comprises a quick-change head 31 connected with the mechanical arm 1, a collet 32 coaxially arranged with the quick-change head 31, and a torsion protection chuck 33 coaxially arranged with the collet 32, wherein the quick-change head 31, the collet 32 and the torsion protection chuck 33 are all arranged in a cylindrical shape, and the collision between the outer wall and the outside can be reduced in the rotating process.

The two ends of the quick-change head 31 are respectively detachably connected with the mechanical arm 1 and the collet chuck 32. The detachable connection structure between the quick-change head 31 and the collet 32 is as follows:

one end of the collet 32 close to the quick-change head 31 is provided with a connecting section 321 extending into the quick-change head 31, the connecting section 321 is in threaded connection with the inner wall of the quick-change head 31, the connecting section 321 is provided with an external thread, and the inner wall of the quick-change head 31 is provided with an internal thread meshed with the external thread of the connecting section 321.

A collar 311 is also provided in the quick-change head 31 to improve the accuracy of the alignment. The lantern ring 311 comprises a ring body 311-2 and a ball 311-1 located on one side of the ring body 311-2 facing the interior of the quick-change head 31, the relative position between the ring body 311-2 and the quick-change head 31 is limited, and the structure is as follows: a groove 311-4 is formed in one side, facing the inner wall of the quick-change head 31, of the ring body 311-2, a protruding strip 5 falling in the groove 311-4 is arranged on one side, facing the collet chuck 32, of the quick-change head 31, and the width of the groove 311-4 is larger than that of the protruding strip 5. After the arrangement, the limit position of the ring body 311-2 is the relative position when the protruding strip 5 and the inner wall of the groove 311-4 are mutually abutted in the process of moving; and after the protruding strip 5 is covered and limited by the groove 311-4, the ring body 311-2 is not easy to fall off.

A flanging 311-3 for preventing the ball 311-1 from falling off extends from the inner diameter of the ring body 311-2, a space enclosed by the flanging 311-3 can just accommodate the ball 311-1, and the ball 311-1 can freely roll in the space enclosed by the flanging 311-3 on the ring body 311-2.

When the connecting section 321 extends into the quick-change head 31, because the ring body 311-2 occupies a certain space in the quick-change head 31, the diameter of the mouth position where the connecting section 321 can actually extend into the quick-change head 31 is smaller, and the diameter of the mouth part is smaller than the inner diameter of the quick-change head 31, so that the range where the connecting section 321 can circumferentially shift is smaller, compared with the condition with a larger axial shifting range, the coaxiality deviation between the connecting section 321 and the quick-change head 31 can be smaller due to the arrangement, when the internal thread and the external thread are meshed with each other, the possibility of staggering thread teeth is reduced, when a worker operates, the internal thread and the external thread can be rapidly rotated to be completely meshed at one time, and the quick-change head is.

Meanwhile, the ring body 311-2 has a certain range of play, so that the accuracy of thread engagement is not easily influenced. Finally, when the ring body 311-2 is screwed into full engagement, the ring body 311-2 abuts against the end surface of the collet 32 on the side facing the connecting section 321, and the ring body 311-2 is pushed up by the collet 32 to an extreme position close to the inside of the quick-change head 31.

The detachment between the collet 32 and the torsion-protecting collet 33 is achieved by the locking function of the collet 32 itself. In this embodiment, collet 32 may be used in models including ER8, ER11, ER16, with collet 32 being ER11 for the present application.

All detachable structure 3 adopt same platform rotation driving device 4 to drive in the use, and in this embodiment, rotation driving device 4 adopts the motor, and the output shaft of motor and all detachable structure 3 coaxial settings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (7)

1. The utility model provides an automatic tapping device of arm, includes arm (1), is located screw tap (2) of arm (1) tip, its characterized in that: at least two detachable structures (3) are arranged between the screw tap (2) and the mechanical arm (1), and the two detachable structures (3) are coaxially arranged.

2. The robotic automatic tapping device of claim 1, wherein: the detachable structure (3) comprises a quick-change head (31) connected with the mechanical arm (1), a collet chuck (32) coaxially arranged with the quick-change head (31), and a torsion protection chuck (33) coaxially arranged with the collet chuck (32), wherein two ends of the quick-change head (31) are detachably connected with the mechanical arm (1) and the collet chuck (32) respectively.

3. The robotic automatic tapping device of claim 2, wherein: one end of the collet (32) close to the quick-change head (31) is provided with a connecting section (321) extending into the quick-change head (31), the connecting section (321) is in threaded connection with the inner wall of the quick-change head (31), and a lantern ring (311) used for improving alignment accuracy is further arranged in the quick-change head (31).

4. The robotic automatic tapping device of claim 3, wherein: the lantern ring (311) comprises a ring body (311-2) and a ball (311-1) located on one side, facing the interior of the quick-change head (31), of the ring body (311-2), and the ball (311-1) is arranged on the ring body (311-2) in a rolling mode.

5. The robotic automatic tapping device of claim 4, wherein: a flanging (311-3) for preventing the ball (311-1) from falling is extended at the inner diameter of the ring body (311-2).

6. The robotic automatic tapping device of claim 4, wherein: one side of the ring body (311-2) facing the inner wall of the quick-change head (31) is provided with a groove (311-4), one side of the quick-change head (31) facing the collet (32) is provided with a protruding strip (5) falling in the groove (311-4), and the width of the groove (311-4) is larger than that of the protruding strip (5).

7. The robotic automatic tapping device of claim 1, wherein: all detachable structures (3) are driven by the same rotary driving device (4) in the using process, and the output shaft of the rotary driving device (4) is coaxial with all detachable structures (3).

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