A combined testing fixture for A2 series interface horizontal rotary spindle

Abstract

The utility model belongs to lathe calibration technical field discloses a kind of combination gauges for A2 series interface horizontal rotary main shaft, including stick body (1), connecting flange (2), fastening bolt (5);Stick body (1) one end surface and connecting flange (2) central part vertical welding are provided with fastening screw hole (3) on connecting flange (2);Connecting flange (2) and lathe bed main shaft end surface are connected and fixed by fastening bolt (5), adjusting washer is arranged between connecting flange (2) and lathe bed main shaft end surface.The utility model is simple in structure, low in manufacturing cost, easy to operate, improve precision detection work efficiency, ensure product machining precision, avoid the problem such as taper hole wear, research injury, corrosion etc..

Description

Technical Field

[0001] This utility model belongs to the field of lathe calibration technology, and in particular relates to a combined inspection tool for measuring and adjusting the spatial parallelism accuracy between the spindle generatrix and the bed generatrix of an A2 series interface horizontal rotary spindle. Background Technology

[0002] Common representative equipment using A2 series interface horizontal rotary spindles includes: ordinary lathes, horizontal CNC lathes, and combination special-purpose machines. This equipment is widely used in shipbuilding, aviation, aerospace, and weaponry industries. The accuracy of the spatial parallelism between the spindle generatrix and the bed generatrix directly affects the dimensional accuracy of the machined products. To improve product processing quality, reduce scrap due to equipment accuracy deviations, and address the issue of not being able to use standard gauges for routine accuracy calibration due to the grinding of the machine's tapered holes, specially designed gauges are typically designed to meet accuracy testing requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a combined inspection tool for measuring and adjusting the spatial parallelism accuracy between the spindle generatrix and the bed generatrix of an A2 series interface horizontal rotary spindle.

[0004] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0005] A combined inspection tool for A2 series interface horizontal rotary spindles includes a rod body 1, a connecting flange 2, and fastening bolts 5;

[0006] One end face of the rod body 1 is welded perpendicularly to the center of the connecting flange 2, and the connecting flange 2 is provided with fastening screw holes 3; the connecting flange 2 is connected and fixed to the end face of the bed spindle by fastening bolts 5, and an adjusting shim is provided between the connecting flange 2 and the end face of the bed spindle.

[0007] Furthermore, the rotational runout at the root and distal end of the rod is measured using a dial indicator. Adjustments are made by replacing the adjusting shims to ensure that the runout on both sides of the rod is less than 0.002mm. Subsequently, lathe precision testing and adjustment can be performed.

[0008] Furthermore, the dial indicator is fixed on the base, which is fixed on the moving axis of the bed. The indicator needle contacts the rod. The dial indicator is pushed along the bed guide rail to observe the change in the dial indicator value. Based on the value, the spatial parallelism accuracy between the spindle generatrix and the bed generatrix is ​​adjusted.

[0009] Furthermore, the dial indicator is fixed on the indicator base, which is fixed on the moving shaft of the bed. The indicator needle is in contact with the rod body. By manually rotating the spindle, the change of the indicator needle is observed, and the spindle rotation accuracy is adjusted according to the value.

[0010] This utility model has the following advantages: simple structure, low manufacturing cost, easy operation, improved efficiency of precision testing, guaranteed product processing accuracy, and avoids the problem of out-of-tolerance measurement and adjustment of the spindle generatrix and bed generatrix caused by tapered hole wear, scratches, corrosion, etc.; at the same time, it is a combination fixture that meets the requirements of measuring and adjusting the spatial parallelism between the spindle generatrix and bed generatrix of A2 series interface horizontal rotary spindles with various spindle end face specifications, and has a certain degree of versatility. Attached Figure Description

[0011] Figure 1 This is the main structural view of the combined inspection fixture body;

[0012] Figure 2 To adjust the main view of the structure of shim 2;

[0013] The markings in the diagram are as follows: 1-rod body; 2-connecting flange; 3-fastening screw hole; 4-short tapered interface; 5-fastening bolt; 6-adjusting shim. Detailed Implementation

[0014] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0015] like Figure 1 As shown, the combined inspection fixture for A2 series interface horizontal rotary spindle of this utility model includes a rod body 1, a connecting flange 2, a fastening screw hole 3, a short tapered interface 4, and a fastening bolt 5.

[0016] The rod body 1 is a round rod structure made of 45# steel, and one end face of the rod body 1 is welded perpendicularly to the center of the connecting flange 2.

[0017] The connecting flange 2 is a circular plate structure machined from 45# steel;

[0018] Fastening screw hole 3 is a through hole;

[0019] The short cone interface 4 is a groove;

[0020] Fastening bolt 5 is a national standard bolt;

[0021] like Figure 2 As shown, the adjusting shim 6 is mainly made of copper, with a thickness of 0.02mm-0.05mm in several pieces;

[0022] The principle of this utility model is:

[0023] The combined gauge body 1 is used to connect and fix to the end face of the machine bed spindle with M12 bolts. A dial indicator is used to measure the rotational runout of the root and distal head of the gauge body. Adjustments are made using shims 2 to ensure that the runout on both sides is less than 0.002mm. After installation, equipment accuracy testing and adjustment can be performed. It can measure and adjust the spatial parallelism accuracy between the spindle generatrix and the machine bed generatrix of the A2 series interface horizontal rotary spindle. It can also be used with a dial indicator to measure spindle rotation accuracy and to measure the height adjustment of the tailstock generatrix and the machine bed generatrix.

[0024] The working process of this utility model:

[0025] The combined gauge body consists of a rod body 1, a connecting flange 2, a fastening screw hole 3, a short tapered interface 4, and a fastening bolt 5. The combined gauge body 1 is used to connect and fix to the end face of the spindle of the equipment bed with M12 bolts. A dial indicator is used to measure the rotational runout of the root and distal head of the rod body. The runout on both sides is adjusted by shims 6 to ensure that it is less than 0.002mm. After installation, the equipment accuracy test and adjustment work can be carried out.

[0026] 1. The spatial parallelism accuracy between the spindle generatrix and the bed generatrix of the A2 series interface horizontal rotary spindle can be measured and adjusted. Fix the dial indicator on the sliding base, fix the base on the bed moving shaft, and make the dial indicator needle contact the tangential point on the rod 1. Push the dial indicator along the bed guide rail direction, observe the change of the dial indicator value, and adjust the spatial parallelism accuracy between the spindle generatrix and the bed generatrix according to the value.

[0027] 2. The spindle rotation accuracy of the A2 series interface horizontal rotary spindle can be measured and adjusted. The dial indicator is fixed on the sliding base, and the base is fixed on the moving shaft of the bed. The indicator needle is in contact with the tangent point on the bar 1. The spindle is manually rotated, and the change of the indicator needle is observed. The spindle rotation accuracy is adjusted according to the value.

[0028] 3. This tool allows for precise measurement and adjustment of the height of the tailstock generatrix and bed generatrix on a conventional lathe. Fix a standard gauge bar to the tailstock, and a dial indicator to a sliding base. The base is fixed to the bed's moving axis. The dial indicator needle contacts the tangential point on the standard gauge bar. Push the dial indicator along the bed guide rail and observe the change in its value. Adjust the precision based on the value. Once the target is met, fix the dial indicator to the tailstock, with the needle contacting the tangential point on the gauge bar. Zero the dial indicator and slide it along the bed. Observe the change in the dial indicator value and adjust the height of the tailstock generatrix and bed generatrix on the conventional lathe accordingly.

[0029] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and improvements without departing from the principles of the present invention, and these modifications and improvements should also be considered to fall within the protection scope of the present invention.

Claims

1. A combined inspection fixture for A2 series interface horizontal rotary spindles, characterized in that, Includes a rod body (1), a connecting flange (2), and fastening bolts (5); One end face of the rod (1) is welded perpendicularly to the center of the connecting flange (2), and the connecting flange (2) is provided with fastening screw holes (3); the connecting flange (2) is connected and fixed to the end face of the bed spindle by fastening bolts (5), and an adjusting shim is provided between the connecting flange (2) and the end face of the bed spindle.

2. The combined inspection fixture for A2 series interface horizontal rotary spindles according to claim 1, characterized in that, The runout at the root and distal end of the rod is measured using a dial indicator. Adjustments are made by replacing the shims to ensure that the runout on both sides of the rod is less than 0.002 mm. Then, lathe precision testing and adjustment can be performed.

3. The combined inspection fixture for A2 series interface horizontal rotary spindles according to claim 2, characterized in that, The dial indicator is fixed on the base, which is fixed on the moving axis of the bed. The indicator needle contacts the rod. The dial indicator is pushed along the bed guide rail to observe the change in the dial indicator value. The spatial parallelism accuracy between the spindle generatrix and the bed generatrix is ​​adjusted according to the value.

4. The combined inspection fixture for A2 series interface horizontal rotary spindles according to claim 2, characterized in that, The dial indicator is fixed to the base, which is in turn fixed to the moving axis of the bed. The indicator needle contacts the rod. The spindle is manually rotated to observe the change in the indicator needle, and the spindle rotation accuracy is adjusted according to the value.

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