CN107186500B - Auxiliary positioning device for numerical control lathe spindle - Google Patents

Abstract

The invention discloses an auxiliary positioning device for a main shaft of a numerical control lathe, which comprises an adjusting clamp, an installation part, a positioning shaft and a long cylinder, wherein the positioning shaft and the long cylinder are of hollow structures, the positioning shaft is coaxially arranged in the long cylinder, the length of the positioning shaft is greater than that of the long cylinder, one end of the long cylinder is provided with a flange device for synchronously fixing the long cylinder and the positioning shaft, the installation part and the adjusting clamp are sequentially arranged at the end part of the other end of the long cylinder, one end of the adjusting clamp is clamped on the long cylinder, and the other end of the adjusting clamp is clamped on the positioning shaft. The positioning shaft can be adjusted according to different workpieces, and then positioning with different lengths can be achieved by locking the adjusting clamp and the mounting piece. Compared with the prior art, when workpieces with different lengths are machined in a large batch, the extension length of the workpiece can be quickly adjusted, the time for clamping and positioning is saved, and the device is convenient and quick to operate, so that the machining efficiency is greatly improved.

Description

Auxiliary positioning device for CNC lathe spindle

technical field

The invention relates to a tooling tool for a numerically controlled lathe, in particular to an auxiliary positioning device for a spindle of a numerically controlled lathe, belonging to the technical field of mechanical processing equipment.

Background technique

CNC lathes are large-scale modern machining equipment, generally divided into cutting machine tools and tooling machine tools. With the rapid development of science and technology, CNC machine tools continue to develop towards the trend of intelligence, high speed and precision. When processing the workpiece, the workpiece is placed on the spindle of the CNC lathe, and then the processing operation can only be performed after positioning by the workpiece fixture matched with the spindle. In the prior art, in the field of CNC lathe processing, there are already many and mature tools for positioning and clamping workpieces. For example, the Chinese invention patent application with application number CN201610362922.6 discloses a clamp in a CNC lathe, including U-shaped body, the outside of the right arm of the U-shaped body is equipped with a motor, the motor is connected to the locking block arranged on the inside of the right arm of the U-shaped body through a rotating shaft, and the composition of the left arm of the U-shaped body is the same as that of the right arm. The fixture has a simple structure, is easy to install and disassemble, and is easy to operate. However, it cannot quickly adjust the protruding length of the workpiece during processing. When a large number of workpieces with different lengths are processed, it is necessary to measure the protruding length of the workpiece every time it is clamped. The measurement process will not only take a long time and reduce production efficiency, but also the processing accuracy of the workpiece is difficult to guarantee.

Contents of the invention

In view of the above-mentioned deficiencies, the technical problem to be solved by the present invention is to provide an auxiliary positioning device for the spindle of a CNC lathe that has a simple structure and can quickly adjust the protruding length of the workpiece.

To achieve the above object, the present invention is achieved through the following technical solutions:

An auxiliary positioning device for a spindle of a CNC lathe, including an adjusting fixture, a mounting piece, a positioning shaft and a long cylinder all of which are hollow structures, the positioning shaft is coaxially installed in the long cylinder and the length of the positioning shaft is greater than the length of the long cylinder, and the long cylinder One end of the cylinder is provided with a flange device for synchronously fixing the long cylinder and the positioning shaft, and the other end of the long cylinder is provided with the mounting part and the adjusting fixture in turn, and one end of the adjusting fixture is clamped on the long cylinder. The other end is clamped on the positioning shaft.

In the above solution, the flange device may include a flange, a fixed plate and a fixing member for installing the fixed plate on the flange, and a circular shaft for installing the fixed plate is provided in the center of the flange The fixed plate includes a cylindrical male joint and a through hole for the positioning shaft to pass through. The cylindrical male joint is axially connected with the long cylinder and arranged coaxially with the through hole.

In the above solution, further, the adjustment fixture may include two cooperating clamping pieces and fasteners for locking the clamping piece, and one end of the clamping piece is provided with a clamp for clamping the long cylinder. The other end of the large lock lug is provided with a small lock lug for clamping the positioning shaft.

In the above solution, the fastener may include a bolt and a nut used in conjunction with the bolt, and mounting holes for the bolt to pass through are provided on the large lock lug and the small lock lug.

In the above solution, the mounting part includes a washer and a locking nut that can be freely screwed on the long cylinder, and threads that cooperate with the locking nut are provided on the outer wall of the long cylinder.

The beneficial effects of the present invention are:

The invention assists the positioning of the workpiece on the spindle of the CNC lathe by setting a positioning device mainly composed of an adjusting fixture, a mounting part, a positioning shaft and a long cylinder, all of which are hollow structures. That is, the positioning shaft is adjusted according to different workpieces, and then the positioning of different lengths can be achieved by locking and adjusting the fixture and the mounting piece. Compared with the existing technology, when workpieces with different lengths are processed in large batches, the protruding length of the workpieces can be quickly adjusted, saving the time for clamping and positioning, and the operation is convenient and fast, thereby greatly improving the processing efficiency.

Description of drawings

Fig. 1 is a dismantled schematic diagram of a structure of an auxiliary positioning device for a spindle of a CNC lathe.

Fig. 2 is a structural schematic diagram of the assembled CNC lathe spindle auxiliary positioning device.

The labels in the figure are: 1. Positioning shaft; 2. Flange; 3. Fixed plate; 4. Long cylinder; 5. Gasket; 6. Lock nut; 7. Clamping piece: 7a, large lock ear, 7b , small lock lug; 8, bolt; 9, nut; 10, fixing piece.

Detailed ways

As shown in Fig. 1 and Fig. 2, the auxiliary positioning device for the spindle of a CNC lathe includes an adjusting fixture, a mounting piece, a positioning shaft 1 and a long cylinder 4, both of which are hollow structures. The positioning shaft 1 is coaxially installed in the long cylinder 4 and the length of the positioning shaft 1 is greater than the length of the long cylinder 4 . One end of the long cylinder 4 is provided with a flange device for synchronously fixing the long cylinder 4 and the positioning shaft 1, and the other end of the long cylinder 4 is provided with the installation piece and the adjusting fixture in sequence. One end of the adjusting fixture is clamped on the long cylinder 4 , and the other end is clamped on the positioning shaft 1 . In this embodiment, the mounting part includes a washer 5 and a lock nut 6 that can be freely screwed on the long cylinder 4, and the outer wall of the long cylinder 4 is provided with a screw thread that is used in conjunction with the lock nut 6 .

In this embodiment, the flange device includes a flange 2 , a fixed plate 3 and a fixing member 10 for installing the fixed plate 3 on the flange 2 . Specifically, the fixing member 10 may be a screw. The center of the flange plate 2 is provided with a circular shaft hole for installing the fixed plate 3, and the fixed plate 3 includes a cylindrical convex joint and a through hole for the positioning shaft 1 to pass through. The cylindrical convex joint is axially connected with the long cylinder 4 and arranged coaxially with the through hole, that is, the long cylinder 4 is axially connected with the cylindrical convex joint, and the positioning shaft 1 penetrates into the through hole on the fixed plate 3, and the fixed The disc 3 is fixed on the flange 2 through the fixing member 10 .

As shown in Figure 1, the adjustment fixture includes two clamping pieces 7 used in conjunction with fasteners for locking the clamping piece 7, and one end of the clamping piece 7 is provided with a The other end of the large lock ear 7a of 4 is provided with a small lock ear 7b for clamping the positioning shaft 1. Further, the fastener includes a bolt 8 and a nut 9 matched with the bolt 8 . Mounting holes for the bolts 8 to penetrate are opened on the large lock ear 7a and the small lock ear 7b. The big lock ear 7a, the clamping piece 7 and the small lock ear 7b are integrally formed. Since the positioning shaft 1 and the long cylinder 4 are both circular, the cross section of the single clamping piece 7 is a semicircular structure. In this embodiment, the number of the bolts 8 and nuts 9 is four, that is, two large and small locking lugs (7a, 7b) are used to lock the clamping piece 7 respectively.

When the present invention is in use:

1) After passing the long cylinder 4 through the main shaft of the CNC lathe, connect one end of the main shaft to the flange 2, and then fix the long cylinder 4 to the tail of the main shaft through the mounting parts (that is, the gasket 5 and the lock nut 6); 2 ) and then run the positioning shaft 1 through the long cylinder 4, adjust the protruding length of the positioning shaft 1 at the end of the flange 2 according to shaft workpieces of different lengths, press the workpiece against the positioning shaft 1, and then the workpiece Positioning; 3) Finally, a pair of clamping pieces 7 are used to clamp the long cylinder 4 and the positioning shaft 1 at the same time, that is, the large locking lug 7a on the clamping piece 7 clamps the long cylinder 4 and the small locking lug 7b clamps the positioning shaft 1, Make the entire auxiliary device rotate with the main shaft as a whole; 4) When it is necessary to adjust the protruding length of the workpiece, after loosening the nut on the small lock ear 7b, the positioning axis 1 can be moved, and after adjusting the positioning axis 1 to a suitable position Fix it with bolts 8 and nuts 9, which realizes the rapid positioning of the workpiece.

The above is only to illustrate the implementation of the present invention, and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be Included within the protection scope of the present invention.

Claims (3)

1. Numerical control lathe main shaft auxiliary positioning device, its characterized in that: the positioning device comprises an adjusting clamp, an installing piece, a positioning shaft (1) and a long cylinder (4), wherein the positioning shaft (1) and the long cylinder (4) are of hollow structures, the positioning shaft (1) is coaxially arranged in the long cylinder (4), the length of the positioning shaft (1) is larger than that of the long cylinder (4), one end of the long cylinder (4) is provided with a flange device for synchronously fixing the long cylinder (4) and the positioning shaft (1), the end part of the other end of the long cylinder (4) is sequentially provided with the installing piece and the adjusting clamp, one end of the adjusting clamp is clamped on the long cylinder (4), and the other end of the adjusting clamp is clamped on the positioning shaft (1);

the flange device comprises a flange plate (2), a fixed disc (3) and a fixing piece (10) for mounting the fixed disc (3) on the flange plate (2), wherein a circular shaft hole for mounting the fixed disc (3) is formed in the center of the flange plate (2), the fixed disc (3) comprises a cylindrical convex joint and a through hole for the positioning shaft (1) to penetrate through, and the cylindrical convex joint is in shaft connection with the long cylinder (4) and is coaxially arranged with the through hole;

the mounting piece comprises a gasket (5) and a locking nut (6) capable of being freely screwed on the long cylinder (4), and threads matched with the locking nut (6) for use are arranged on the outer wall body of the long cylinder (4).

2. The numerically controlled lathe spindle auxiliary positioning device according to claim 1, wherein: the adjusting clamp comprises two clamping sheets (7) which are matched with each other for use and a fastener for locking the clamping sheets (7), wherein one end of each clamping sheet (7) is provided with a large locking lug (7 a) for clamping and connecting the long cylinder (4), and the other end of each clamping sheet is provided with a small locking lug (7 b) for clamping and positioning the shaft (1).

3. The numerically controlled lathe spindle auxiliary positioning device according to claim 2, wherein: the fastener comprises a bolt (8) and a nut (9) matched with the bolt (8) for use, and mounting holes for the bolt (8) to penetrate are formed in the large lock lug (7 a) and the small lock lug (7 b).

Images