Testing fixture for measuring distance from inner ring groove to end face of deep hole

Abstract

A gauge for measuring the distance from an inner ring groove to an end face of a deep hole belongs to the field of measurement and comprises a measuring foot, a screw, a bushing, a measuring rod, a spring, a guide sleeve, a handle, a gauge stand, a dial indicator bushing, a fastening screw, a dial indicator and a calibration piece. The bushing is fixedly installed in the guide sleeve through a screw, the spring is sleeved on the measuring rod, the measuring rod penetrates through the bushing and a guide sleeve hole, the measuring foot is fixedly installed on the measuring rod through a screw, and the gauge stand is fixedly installed on the guide sleeve. The handle is connected to the measuring rod, and the measuring foot can be driven by the handle to rotate by 90 degrees. The gauge stand is provided with an L-shaped groove, and the handle can move in the groove. A dial indicator bushing is sleeved in the gauge stand hole, and a dial indicator is arranged in the dial indicator bushing and fixed on the gauge stand through a fastening screw. The device can accurately measure the distance from the inner hole ring groove to the hole end face, and is compact in structure and high in measurement precision. Especially under the conditions that the diameter of a part hole is small, the depth is large, and the distance between the position of an annular groove and the end face is large, the measurement is more convenient and accurate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of detection, and relates to a measuring gauge, especially to a measuring gauge for the distance from a ring groove in a deep hole to an end face. BACKGROUND

[0002] It is well known that in mechanical processing, some mechanical parts need to process some ring grooves in the part holes, and the widths, depths and relative hole end face positions of the ring grooves are different. Usually, the ring groove size is small, and the position is inconvenient for measurement, so ordinary measuring tools cannot complete the measurement. For some parts with small hole diameters, deep ring groove relative hole end face depths and high-precision ring grooves, it is difficult to measure, and it is difficult to obtain accurate measurement data.

[0003] On May 9, 2012, the State Intellectual Property Office published an invention patent application "A hole groove measuring device", the application date is October 9, 2011, the patent application number is 201110300427.X, and the announcement number is CN102445136A. The hole groove measuring device comprises a measuring frame, a measuring body and a screw hole. The measuring frame comprises a hollow base, a measuring frame is arranged on the upper surface of the base, the measuring frame is hollow, a cavity is arranged at the upper end of the measuring body, a screw hole is arranged on the side wall of the cavity, and the depth size is inserted into the cavity of the measuring body after passing through the measuring frame. During measurement, the lower end of the measuring body is inserted into the part hole, the lower end face of the measuring body is in contact with the hole groove end face, the depth gauge is inserted into the cavity at the upper end of the measuring body, the depth of the hole groove is calculated according to the reading of the depth gauge and the length of the measuring body, and the distance from the hole groove to the end face is measured by means of the depth gauge. The application needs to put the measuring body into the deep hole during measurement, and the size of the part hole diameter is limited. When the measuring body is put into the hole, the hand cannot hold the measuring body to be inserted into the hole when the space of the part hole is narrow, and it is difficult to operate the measuring body to be put into the hole. In addition, during measurement, the lower end face of the measuring body needs to be in contact with the hole groove end face of the part. Since the contact surface of the measuring body and the hole groove end face is small, the measuring body cannot be supported in the hole, and the lower end face cannot be in contact with the ring groove. In addition, the measuring body is unstable due to the gravity of the measuring body itself, and the contact state of the lower end face and the ring groove cannot be judged, which reduces the accuracy of measurement. Meanwhile, the measurement accuracy is low due to the limitation of the vernier caliper.

[0004] Therefore, it is necessary to design a measuring gauge for the distance from a ring groove in a deep hole to an end face, especially in the case that the part hole diameter is small, the measurement space is narrow, and the distance from the ring groove position to the hole end face is deep. The distance from the hole ring groove to the hole end face can be accurately measured, and the detection measuring tool is convenient to operate and has high measurement accuracy. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose at providing a kind of compact structure, it is easy to operate, measurement precision is high, can realize the measuring gauge of fast and accurate measurement deep hole inner ring groove to end face distance.

[0006] To achieve the above object, the utility model adopts technical scheme: a kind of measuring gauge of deep hole inner ring groove to end face distance, comprising: measuring foot, screw, bush, measuring rod, spring, guide sleeve, handle, table seat, dial gauge bush, fastening screw, dial gauge;Bushing is fixedly installed in guide sleeve by screw, spring is sleeved on measuring rod, measuring rod is worn in bush and guide sleeve hole, measuring foot is fixedly installed on measuring rod by screw, and table seat is fixedly installed on guide sleeve.

[0007] The handle is connected on the measuring rod, and the measuring foot can rotate 90 degrees under the driving of the handle.

[0008] L-shaped groove is opened on the table seat, and the handle can move in the L-shaped groove.

[0009] The dial gauge bush is sleeved in the table seat hole.

[0010] The dial gauge is fixed on the table seat by the fastening screw.

[0011] The utility model adopts the above technical scheme and has the following advantages: the utility model can accurately measure the distance from the inner hole ring groove to the hole end face, and the structure is compact, easy to operate, and high in measurement precision.Especially for the case that the part hole diameter is small, the hole depth is deep, the measurement space is narrow, and the ring groove position is far from the end face, the measurement convenience and accuracy are higher. DRAWINGS

[0012] Fig. 1 It is the sectional view structural schematic diagram of the utility model deep hole inner ring groove to end face distance measuring gauge;

[0013] Fig. 2 It is the calibration piece structural schematic diagram of the utility model deep hole inner ring groove to end face distance measuring gauge;

[0014] Fig. 3 It is the table seat structural schematic diagram of the utility model deep hole inner ring groove to end face distance measuring gauge.

[0015] In the drawing: 1. measuring foot, 2. screw, 3. bush, 4. measuring rod, 5. spring, 6. guide sleeve, 7. handle, 8. table seat, 9. dial gauge bush, 10. fastening screw, 11 dial gauge, 12. calibration piece;A. L-shaped groove. DETAILED DESCRIPTION

[0016] The utility model will be further described below in connection with the drawings and examples.As Figs. 1-3As shown, a kind of deep hole inner ring groove to end face distance measuring gauge, comprising: measuring foot 1, screw 2, bushing 3, measuring rod 4, spring 5, guide sleeve 6, handle 7, table seat 8, dial gauge bushing 9, fastening screw 10, dial gauge 11, calibration piece 12.

[0017] In the embodiment, bushing 3 is fixedly installed in the hole in the end of guide sleeve 6 by screw 2, then spring 5 is sleeved on measuring rod 4, measuring rod 4 passes through bushing 3 and the hole in guide sleeve 6 with spring 5, measuring foot 1 is fixedly installed at the front end of measuring rod 4 by screw 2, table seat 8 is fixedly installed on guide sleeve 6, dial gauge bushing 9 is installed in the hole in table seat 8, dial gauge 11 is inserted into dial gauge bushing 9 and is fixedly installed on table seat 8 by fastening screw 10, L-shaped slot A is formed in table seat 8, handle 7 is connected to measuring rod 4 and can move in L-shaped slot A and is used for limiting the movement limit of dial gauge 11, calibration piece 12 is the same size as the distance from the inner ring groove to the end face of the measured part and is used for zero calibration of dial gauge 11.

[0018] The working principle of the utility model is as follows: before measurement, first, place the measuring gauge on calibration piece 12, adjust the dial scale of dial gauge 11 to zero, complete calibration work, then move handle 7 to 90 degrees position with L-shaped slot A, make measuring foot 1 rotate 90 degrees, avoid knocking when measuring foot 1 enters the hole of part and approaches inner ring groove, hold table seat 8, place the measuring gauge into the hole of the measured part, move to the end face of guide sleeve 6 and abut against the end face of part, then rotate handle 7 to parallel to the direction of measuring rod 4, rotate measuring foot 1 90 degrees, slowly release handle 7, and measuring foot 1 enters inner ring groove, under the action of spring force, the measuring surface of measuring foot 1 abuts against the end face of inner ring groove of part, then watch the reading of dial gauge, and the difference between zero reading is the distance difference from the end face of inner ring groove to the end face of hole.

[0019] After measurement, move measuring foot 1 out of inner ring groove, then move handle 7 to 90 degrees position with L-shaped slot A, take out the gauge, and complete measurement.

[0020] The utility model can accurately measure the distance from inner hole ring groove to hole end face, and is convenient to operate, has low requirement to operator, high measurement precision, and is suitable for inner ring groove measurement of holes of various sizes.

[0021] It should be explained finally: above-mentioned is only preferred embodiment of the utility model and is not used for limiting all contents of the utility model, although the utility model has been explained in detail with reference to foregoing embodiment, for the person skilled in the art, it still can make formal modification to the technical scheme recorded in foregoing embodiment, or make equivalent replacement to part technical features. The formal modification, equivalent replacement etc. made within the thought inspiration of the utility model should be contained in the right protection scope of the utility model.

Claims

1. A measuring gauge for measuring the distance from an inner ring groove to an end face of a deep hole, comprising: Measuring foot (1), screw (2), bushing (3), measuring rod (4), spring (5), guide sleeve (6), handle (7), table seat (8), dial indicator bushing (9), fastening screw (10), dial indicator (11); characterized in that: the bushing (3) is fixedly installed in the guide sleeve (6) through the screw (2), the spring (5) is sleeved on the measuring rod (4), the measuring rod (4) is inserted into the holes of the bushing (3) and the guide sleeve (6), the measuring foot (1) is fixedly installed on the measuring rod (4) through the screw (2), the table seat (8) is fixedly installed on the guide sleeve (6), the dial indicator (11) is inserted into the dial indicator bushing (9) and fixedly installed on the table seat (8) through the fastening screw (10), and the measuring rod (4) is connected with the handle (7).

2. The measuring gauge for measuring the distance from the inner ring groove to the end face of a deep hole according to claim 1, characterized in that: The measuring foot (1) can rotate 90 degrees under the driving of the handle (7).

3. The measuring gauge for measuring the distance from the inner ring groove to the end face of a deep hole according to claim 1, characterized in that: An L-shaped slot (A) is formed in the table seat (8), and the handle (7) can move in the L-shaped slot (A).

4. The measuring gauge for measuring the distance from the inner ring groove to the end face of a deep hole according to claim 1, characterized in that: The dial indicator bushing (9) is sleeved in the hole of the table seat (8).

5. The depth of bore ring groove to face distance measuring gauge of claim 4 wherein: The dial indicator (11) is arranged in the dial indicator bushing (9) and fixed on the table seat (8) through the fastening screw (10).

Images