A measuring rod for measuring the parallelism of the head and tail stock of a gear grinding machine

Abstract

The utility model discloses a measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine, comprising: a measuring plate installed on the end face of the headstock spindle, a first correction measuring rod and a second correction measuring rod are vertically arranged on the measuring plate, the first correction measuring rod and the second correction measuring rod are arranged in parallel, so that the radial runout of the near and far ends of the first correction measuring rod is within 0.003, and then the measurement accuracy of the first correction measuring rod is translated as a whole to the position of the second correction measuring rod which will not interfere with the up and down movement of the tailstock, a micrometer is fixed to the tailstock end of the machine tool, the needle of the dial touches the positive and side generatrix of the measuring rod, the parallelism of the tailstock movement and the workpiece spindle axis is measured, the parallelism of the workpiece spindle axis and the tailstock movement within the full stroke of the tailstock is measured by the eccentric lead-out method, including the tailstock movement accuracy, solving the measurement problem of the parallelism of the full stroke movement of the tailstock and the headstock axis, and meeting the parallelism detection accuracy requirement.

Description

Technical Field

[0001] The utility model relates to the field of gear grinding machine equipment, in particular to a measuring rod used for measuring the parallelism of a headstock and a tailstock of a gear grinding machine. Background Art

[0002] Gear grinding machine is a gear processing machine tool that uses grinding wheel as a grinding tool to process cylindrical gears or certain gears (helical gears, bevel gears, etc.) to process tool tooth surfaces. During the use of high-efficiency worm wheel gear grinding machine products, due to the different lengths of shaft gears and different tailstock heights when grinding shaft gears, if the parallelism of the head and tailstock axes is not controlled in a standardized manner, it will cause the gear tooth angle error after grinding to exceed the tolerance, especially for machine tools with a long tailstock travel and a large range of shaft gears, the impact is more obvious. Utility Model Content

[0003] In view of the above defects or shortcomings, the purpose of the utility model is to provide a measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine comprises: a measuring plate installed on the end face of the headstock spindle, a first correction measuring rod and a second correction measuring rod are vertically arranged on the measuring plate, and the first correction measuring rod and the second correction measuring rod are arranged in parallel.

[0006] The ends of the first correction measuring rod and the second correction measuring rod are provided with a thin neck structure.

[0007] The narrow neck structure is provided with upper and lower shaft shoulders.

[0008] A plurality of first screws are evenly arranged on the upper and lower shoulders in the circumferential direction. The first screws are connected to the upper shoulder, and the lower ends of the first screws pass through the lower shoulder and are installed on the measuring plate.

[0009] The lower shoulder is fixedly mounted on the measuring plate by a second screw.

[0010] The first calibration rod and the second calibration rod have a length of 520 mm and a diameter of 40 mm.

[0011] The top end surfaces of the first calibration rod and the second calibration rod are provided with reference center holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine. Two correction measuring rods are arranged and installed on the end face of the headstock spindle. The support screws are adjusted to make the radial runout of the near and far ends of the first correction measuring rod within 0.003. Then the measurement accuracy of the first correction measuring rod is translated as a whole to the position of the second correction measuring rod which will not interfere with the up and down movement of the tailstock. The micrometer is fixed to the tailstock end of the machine tool. The needle of the dial touches the positive and side generatrix of the measuring rod. The parallelism of the tailstock movement and the workpiece spindle axis is measured. The eccentric lead-out method is used to measure the parallelism of the workpiece spindle axis and the tailstock movement within the full stroke of the tailstock, including the tailstock movement accuracy. The problem of measuring the parallelism of the full stroke movement of the tailstock and the headstock axis is solved to avoid disputes and meet the parallelism detection accuracy requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the installation of a measuring rod used for measuring the parallelism of the head and tail frames of a gear grinding machine according to the utility model;

[0015] Figure 2 This is a schematic diagram of the measuring rod structure used for measuring the parallelism of the head and tail frames of the gear grinding machine. Figure 1 ;

[0016] Figure 3 This is a schematic diagram of the measuring rod structure used for measuring the parallelism of the head and tail frames of the gear grinding machine. Figure 2 ;

[0017] Figure 4 This is a schematic diagram of the measuring rod structure used for measuring the parallelism of the head and tail frames of the gear grinding machine. Figure 3 .

[0018] In the figure, 1 is the end face of the headstock spindle; 2 is the measuring plate; 3 is the second calibration rod; 4 is the first calibration rod; 5 is the thin neck structure; 6 is the reference center hole; 51 is the first screw; 52 is the second screw. DETAILED DESCRIPTION

[0019] The utility model will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0020] like Figure 1 As shown, the utility model provides a measuring rod for measuring the parallelism of the head and tail stock of a gear grinding machine, comprising: a measuring plate 2 installed on the headstock spindle end face 1, a first correction measuring rod 4 and a second correction measuring rod 3 are vertically arranged on the measuring plate 2, and the first correction measuring rod 3 and the second correction measuring rod 4 are arranged in parallel.

[0021] like Figure 2-4As shown, the first calibration rod 4 and the second calibration rod 3 are installed on the measuring plate 2 through the thin neck structure 5. The thin neck structure 5 is provided with upper and lower shoulders. For example, the upper and lower shoulders are evenly arranged with a plurality of first screws 51 in the circumferential direction, which are connected to the upper shoulder. The lower end of the first screw 51 passes through the lower shoulder and is installed with the measuring plate 2. The upper layer has a diameter of 80 mm, and the second layer has a diameter of 120 mm. The length of the first calibration rod 4 and the second calibration rod 3 is 520 mm, and the diameter is 40 mm.

[0022] In addition, the lower shoulder is fixedly mounted on the measuring plate 2 by a second screw 52 , and the top end surfaces of the first calibration rod 4 and the second calibration rod 3 are provided with a reference center hole 6 .

[0023] The working process of the utility model is:

[0024] 1. Install the measuring plate 2 on the end face of the headstock spindle, and then install the first calibration measuring rod 4. The runout of the near and far ends of the first calibration measuring rod 4 is within 0.003mm. The indicator is fixed on the grinding body shell. Move the Z axis, measure the positive side generatrix and record it. Rotate the table 180°, measure the positive side generatrix and record it. Take the average value of two times and record it.

[0025] 2. Install the second calibration measuring rod 3, and measure the positive side busbar by adjusting the tightening screws until the measured value is consistent with the average value detected by the first calibration measuring rod 4; remove the first calibration measuring rod 4.

[0026] 3. Move the tailstock up and down through its full stroke and measure the parallelism between the tailstock movement and the workpiece spindle axis.

[0027] Through the process test research and exploration of the eccentric lead-out method of the workpiece spindle axis, the method of translating the axis of the center measuring rod of the utility model solves the problem of measuring the parallelism between the full-stroke movement of the tailstock and the axis of the headstock, and better controls the coaxiality of the headstock and tailstock. The application of the tool measuring rod can also measure the linear accuracy of the tailstock in the full stroke. A set of tooling detects multiple geometric accuracies, improves the measurement efficiency of the machine tool, detects the parallelism between the axis of the headstock and the movement of the tailstock in the full stroke of the tailstock movement, and the detection method and data are reliable and stable, thereby improving the reliability of the machine tool accuracy.

[0028] It is obvious to those skilled in the art that the above-mentioned specific examples are only preferred schemes of the present invention. Therefore, the improvements and changes that may be made by those skilled in the art to certain parts of the present invention still reflect the principles of the present invention and achieve the purpose of the present invention, and all belong to the scope of protection of the present invention.

Claims

1. A measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine, characterized in that: include: A measuring plate (2) is mounted on the end face (1) of the head frame spindle, wherein a first calibration measuring rod (4) and a second calibration measuring rod (3) are vertically arranged on the measuring plate (2), and the first calibration measuring rod (4) and the second calibration measuring rod (3) are arranged in parallel.

2. The measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine according to claim 1, characterized in that: The ends of the first correction measuring rod (4) and the second correction measuring rod (3) are provided with a narrow neck structure (5).

3. The measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine according to claim 2, characterized in that: The narrow neck structure (5) is provided with upper and lower shoulders.

4. The measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine according to claim 3, characterized in that: A plurality of first screws (51) are evenly arranged around the upper and lower shaft shoulders, the first screws (51) are connected to the upper shaft shoulder, and the lower ends of the first screws (51) pass through the lower shaft shoulder and are mounted on the measuring plate (2).

5. The measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine according to claim 3, characterized in that: The lower shoulder is fixedly mounted on the measuring plate (2) by means of a second screw (52).

6. The measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine according to claim 1 or 2, characterized in that: The first calibration measuring rod (4) and the second calibration measuring rod (3) have a length of 520 mm and a diameter of 40 mm.

7. The measuring rod for measuring the parallelism of the headstock and tailstock of a gear grinding machine according to claim 1 or 2, characterized in that: The top end surfaces of the first calibration measuring rod (4) and the second calibration measuring rod (3) are provided with a reference center hole (6).

Images