CN109015108B - Alignment device for machine tool parts - Google Patents

Abstract

The invention discloses a part alignment device for a machine tool, comprising a support seat, the support seat is connected with a detection rod through a universal ball, and a detection table for measuring the offset of the detection rod is also arranged on the support seat; The axis of the detection rod of the invention coincides with the main axis of the machine tool. If the axis of the workpiece deviates from the axis of the spindle, the detection rod will be driven to make a circular motion around the universal ball during the rotation of the workpiece. The invention uses the principle of leverage to amplify the small deviation of the workpiece , and then read the amplified offset through the detection table, which not only greatly improves the alignment accuracy, but also has a simple structure and easy operation, and greatly improves the alignment efficiency of the workpiece.

Description

Alignment device for machine tool parts

technical field

The invention relates to the technical field of mechanical processing devices, in particular to a part alignment device for machine tools.

Background technique

Processing equipment such as machine tools needs to install the processing parts on the corresponding fixtures before processing. However, during the installation process, due to various reasons, the axis of the parts does not coincide with the axial direction of the spindle of the machine tool, which leads to large gaps. Therefore, it is generally necessary to correct the clamped parts before driving the machine. In the prior art, a magnetic gauge base is often installed on the tool holder, and the dial gauge on the gauge base is in contact with the surface of the workpiece, and the workpiece is Rotating to adjust slowly is not only time-consuming and laborious, but also has low alignment accuracy and cumbersome operation, which is not conducive to improving processing efficiency and quality.

The Chinese utility model patent with the publication number CN201208706Y disclosed a mechanical lever center corrector for ordinary lathes on March 18, 2009. There is a blind hole at the front end of the corrector main body, and the sliding sleeve is arranged in the blind hole. And can slide along it, the concave support screw is installed on the sliding sleeve, the front end of the lever is connected with the correction head, and the middle part is a spherical transition section, the spherical transition section and the rear section of the lever are located in the blind hole on the main body of the corrector. The spherical part and the concave support screw on the sliding sleeve form a spherical fit; the spring is arranged on the lever between the sliding sleeve and the main body of the corrector, and the front end of the main body of the corrector is threaded with a nut, and the magnetic dial indicator seat is absorbed by magnetic force On the cylindrical surface of the main body of the corrector, the probe extends into the blind hole of the main body of the corrector through the hole provided on the main body of the corrector to contact and connect with the lever. The device has the characteristics of simple structure, easy manufacture, convenient use, high calibration accuracy and direct measurement of calibration values.

Although the invention realizes rapid calibration of the workpiece, since each component is fixed, the sensitivity and detection accuracy of the detection meter are limited, and it cannot be adjusted according to the actual production situation, and its scope of application is narrow.

Contents of the invention

Aiming at the defects of low equipment sensitivity, low alignment accuracy and narrow application range in the prior art, the invention discloses an alignment device for machine tool parts, which is not only easy to operate, but also has high alignment efficiency and can The error amplification can improve the detection accuracy, and different magnifications can be selected according to the actual production situation, so as to improve the detection accuracy as much as possible.

The present invention realizes above-mentioned object through following technical scheme:

A machine tool part alignment device, comprising a support base and a detection rod, characterized in that: a support rod is vertically arranged on the support base, a universal ball is arranged on the detection rod, and the detection rod and the support rod The universal ball is cross-connected, and the axis of the detection rod is in a horizontal position in a static state; a slide rail is provided on the support seat, and a slide seat is provided for sliding on the slide rail, and a slide seat is provided on the slide seat. Check table for measuring the deflection of the check rod.

The support rod is a telescopic rod, the sliding seat is provided with a telescopic frame, the telescopic frame is provided with a workbench and an adjusting screw, and the detection meter is installed on the workbench.

Balls are arranged between the sliding seat and the slide rail; fastening screws are also arranged on the sliding seat.

The detecting rod includes a measuring rod and a correcting rod, and a correcting head is connected with a thread on the correcting rod, and the measuring rod and the correcting rod are connected with a universal ball thread.

One end of the measuring rod is provided with a threaded connection hole, and the outer surface of the correcting rod is threaded to be connected with a counterweight nut.

There is clearance fit between the universal ball and the support seat, and the fit precision is grade 6 or grade 7.

The detection epitope dial gauge or dial gauge, and the detection head of the detection gauge is in contact with the outer surface of the detection stem.

The detection meter is an infrared detector.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, a detection rod is installed on the support seat through the rotation of the universal ball, and the detection rod is in a horizontal position in a static state. A detection meter is arranged on the support seat. When the present invention is installed on a machine tool, it is necessary to ensure that the detection rod The axis of the machine tool spindle coincides with the axis of the machine tool, and then is supported by one end of the detection rod on the center pit of the end surface of the workpiece to be processed. If the axis of the workpiece coincides with the axis of the spindle, when the workpiece rotates, the detection rod is driven by the workpiece to rotate around its axis. When the detection table cannot detect any numerical changes; if the axis of the workpiece deviates from the axis of the spindle, the axis of the workpiece and the axis of the detection rod will also deviate, so the workpiece drives the detection rod to rotate around the universal ball, so that the detection table detects the deviation value; the present invention has the advantages of simple operation and fast detection, and at the same time, since the detection rod of the present invention essentially forms a lever with a universal ball as the fulcrum, the slight error of the workpiece axis can be enlarged by increasing the length of the detection rod, thereby greatly The rotation range of the detection rod is improved when the detection rod is rotated, the detection accuracy is improved, and the alignment accuracy of the workpiece is further improved.

2. The support rod of the present invention is a telescopic rod, the sliding seat is provided with a telescopic frame, and the telescopic frame is provided with a workbench, and the detection table is fixedly installed on the workbench, so that the detection rod and the detection table can be adjusted conveniently according to the actual size of the machine tool Therefore, the axis of the detection rod always coincides with the axis of the machine tool spindle, ensuring the accuracy of detection and expanding the scope of application of the device.

3. Balls are arranged between the slide rail and the sliding seat of the present invention to reduce the movement resistance of the sliding seat, which can not only reduce the wear between the parts, prolong its service life, but also make the movement of the sliding seat more rapid and stable , Reduce the vibration of the detection rod and improve the detection accuracy.

4. The detection rod of the present invention includes a measuring rod and a correction rod, the measuring rod and the correction rod are connected with the universal ball screw, and the screw on the correction rod is connected with a correction head, so that it is convenient to replace the detection rods of different lengths as required , so as to adjust the measurement accuracy and sensitivity of the device.

5. One end of the measuring rod of the present invention is provided with a threaded connection hole, and the outer surface of the correction rod is provided with a correction nut, which is convenient for the user to lengthen the measuring rod according to the actual situation, and at the same time adjust the balance of the detection rod through the counterweight nut, thereby improving the detection rod through The amplification effect of the lever principle improves the measurement accuracy and response sensitivity of the equipment.

6. The clearance fit between the universal ball and the supporting seat of the present invention is grade 6 or 7, and the sensitivity of the universal ball is improved under the premise of ensuring that the detection rod and the universal ball are firmly installed, thereby improving the detection accuracy .

7. The detection device of the present invention is a dial indicator, a dial indicator or an infrared detector, etc., by using different detection devices to correspond to different detection requirements, the detection cost is reduced under the premise of ensuring detection accuracy; Various types of detection devices greatly improve the scope of application of the equipment.

Description of drawings

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

Fig. 2 is a top view of the present invention;

Fig. 3 is a schematic diagram of the normal working principle of the present invention;

Fig. 4 is a schematic diagram of the abnormal working principle of the present invention;

Reference signs: 1, support seat, 2, support rod, 3, universal ball, 4, slide rail, 5, sliding seat, 6, inspection table, 7, telescopic frame, 8, workbench, 9, adjusting screw , 10, ball, 11, fastening bolt, 12, measuring rod, 13, correction rod, 14, correction head, 15, threaded connection hole, 16, counterweight nut, 17, steering seat, 18, weight reduction cavity, 19 , Workpiece.

Detailed ways

Example 1

This embodiment, as a preferred embodiment of the present invention, discloses a part alignment device for machine tools. The specific structure is shown in Figure 1, including a support base 1 and a detection rod. Vertically connected support rod 2, the support rod 2 is a telescopic rod; the detection rod includes a measuring rod 12 and a correction rod 13, and the measuring rod 12 and the correction rod 13 are symmetrically arranged on both sides of the universal ball 3, and are connected with the universal ball The steering ball 3 is connected with a screw; the support rod 2 is provided with a steering seat that is compatible with the universal ball 3, and the steering seat and the universal ball are in clearance fit, and the matching accuracy is grade 6; the universal ball 3 The lengths of the measuring rod 12 and the correction rod 13 on both sides are not equal, wherein the length of the correction rod 13 is shorter, and the end surface of the correction rod 13 is connected with a correction head 14 for fixing the workpiece, and the length of the measurement rod 12 is longer than that of the correction rod 13, and its profile is cylindrical, and the end face of the measuring rod is provided with a threaded connection hole 15, which is used to connect different measuring rods 12 to extend the length of the measuring rod 12; the measuring rod 12 and the calibration rod 13 It can be made of different materials with different densities, or the same material with the same density. When using the same material, it is necessary to set a weight nut 16 on the correction rod 13 or a weight reduction cavity 18 on the measuring rod 12. In order to ensure that the detection rod after installation can keep its axis in a horizontal position in a static state without external force (the balance principle is the principle of leverage), the angle between the detection rod and the support seat 1 is any angle; the support The seat 1 is also provided with a slide rail 4, the slide rail 4 is provided with a slide seat 5, and the sliding connection between the slide seat 5 and the slide rail 4 is realized by a ball 10, and the slide seat 5 is provided with a telescopic frame 7. The telescopic frame 7 is provided with an adjusting screw 9, and the adjusting screw is provided with two sections of adjusting threads with opposite screw directions, so as to realize the adjustment of the telescopic state of the telescopic frame 7. The top of the telescopic frame 7 is fixedly provided with a working A table 8, the workbench 8 is provided with a detection meter 6 for measuring the offset of the detection rod; the slide seat 5 is also provided with fastening bolts 11 for fixing it on the support base 1, and the detection Table 6 adopts a dial indicator or a dial indicator, and its detection head is in contact with the outer surface of the measuring rod 12 .

Example 2

This embodiment, as another preferred embodiment of the present invention, discloses a part alignment device for machine tools, the universal ball 3 and the steering seat 17 are clearance fit, and the fit accuracy is grade 7; The detection table 6 is an infrared detector, and the angle between the detection head and the measuring rod 12 is an acute angle, a right angle or an obtuse angle.

The working process of the present invention: firstly, the device is slidably installed on the machine tool, and the axis of the detection rod of the machine tool and the detection rod of the device are guaranteed to coincide, and then the parts to be corrected are installed on the main shaft of the machine tool, and the center of the end surface of the workpiece 19 is supported by the correction head Then fix the device on the machine tool, and reset the reading of the test meter to zero; then manually rotate the drive shaft of the machine tool, and judge whether the axis of the spindle coincides with the axis of the workpiece by observing the measurement data of the test meter, and correct it in time.

Working principle of the present invention: since the axis of the detection rod of the present invention coincides with the axis of the spindle of the machine tool (as shown in Figure 3), if the axis of the workpiece 19 coincides with the axis of the spindle after installation, the axis of the spindle of the machine tool, the axis of the workpiece and the axis of the detection rod coincide , when the workpiece 19 rotates, it will drive the detection stem to rotate around its axis. At this time, the detection data of the detection table is zero, indicating that the workpiece is in the correct installation position;

If the axis of the workpiece deviates from the spindle axis after installation, the axis of the workpiece 19 will also deviate from the axis of the detection rod (as shown in Figure 4). Make a rotating motion (as shown in Figure 4), at this time, the detection rod deviates, and the distance between the detection rod and the detection table changes. At this time, the detection table detects the deviation value, indicating that the workpiece is in the wrong installation position. Adjustment.

Claims (4)

1. A parts alignment device for machine tools, comprising a support base (1) and a detection rod, characterized in that: a support rod (2) is vertically arranged on the support base (1), and a support rod (2) is arranged on the detection rod The universal ball (3), the detection rod and the support rod (2) are connected in a cross through the universal ball (3), and the axis of the detection rod is in the horizontal position in the static state; the support seat (1) is set There is a slide rail (4), and a slide seat (5) is slidably arranged on the slide rail (4), and a detection table (6) for measuring the offset of the detection rod is provided on the slide seat (5); The support rod (2) is a telescopic rod, the sliding seat (5) is provided with a telescopic frame (7), and the telescopic frame (7) is provided with a workbench (8) and an adjusting screw (9), The detection meter (6) is installed on the workbench (8); balls (10) are provided between the slide seat (5) and the slide rail (4); the slide seat (5) is also provided with a tight Fix the bolt (11); the detection rod includes a measuring rod (12) and a correction rod (13), and the correction head (14) is connected with a screw on the correction rod (13), and the measuring rod (12) and the correction rod (13) The rod (13) is connected with the universal ball (3) with a threaded thread; one end of the measuring rod (12) is provided with a threaded connection hole (15), and the outer surface of the correction rod (13) is threaded with a counterweight nut (16) . 2. The alignment device for machine tool parts according to claim 1, characterized in that: the universal ball (3) and the support seat (1) are clearance fit, and the fit precision is grade 6 or 7 class. 3. A machine tool part alignment device according to claim 1, characterized in that: the detection gauge (6) is a dial indicator or a dial indicator, and the detection head and detection rod of the detection gauge (6) external surfaces in contact. 4. The device for aligning machine tool parts according to claim 1, characterized in that: the detection meter (6) is an infrared detector.

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