CN210089591U

CN210089591U - Taper hole detector

Info

Publication number: CN210089591U
Application number: CN201921169614.7U
Authority: CN
Inventors: 赵兴明; 向芥作; 贾海波; 吴涛; 雷闻焰; 郑运运; 刘松浩
Original assignee: JIANAN INDUSTRY Co Ltd SICHUAN PROV
Current assignee: JIANAN INDUSTRY Co Ltd SICHUAN PROV
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-02-18
Anticipated expiration: 2029-07-24

Abstract

The utility model provides a taper hole measuring apparatu for measuring taper hole tapering to solve the inconvenient problem of taper hole tapering measurement, relate to and detect instrument technical field. The taper hole detector comprises a measurement display device and a measurement seat; the measuring and displaying device comprises a measuring head and a displaying device, and a measuring rod is arranged in the measuring head; the measuring seat comprises a shell and a core rod; a first measuring positioning ring is arranged outside the shell; the core bar is arranged in the shell in a sliding mode, the front end of the core bar extends out of the shell, a second measuring positioning ring is arranged at the front end of the core bar, and a spring enabling the core bar to keep an extending state is sleeved on the core bar. The utility model discloses it is convenient to measure, and measurement accuracy is higher, has reduced the emergence of quality accident.

Description

Taper hole detector

Technical Field

The utility model relates to a detect instrument technical field, specifically a taper hole detector.

Background

When machining, the cutter gradually wears to cause the instability of hole machining quality, and in order to guarantee product quality and prevent batch accidents, the products need to be detected in batches every shift.

For a taper hole structure with high precision requirement on taper, the problems of large measurement error and low measurement efficiency exist due to the inconvenience in measurement of a common vernier caliper, an inner diameter ruler and the like, so that the product quality cannot be guaranteed, and batch accidents frequently occur. Therefore, a special taper hole detector is needed in the production process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a taper hole measuring apparatu for measuring taper hole tapering is provided to solve the inconvenient problem of taper hole tapering measurement.

The utility model provides a technical scheme that its technical problem adopted is: the taper hole detector comprises a measurement display device and a measurement seat; the measuring and displaying device comprises a measuring head and a displaying device, and a measuring rod is arranged in the measuring head; the measuring seat comprises a shell and a core rod;

a first measuring positioning ring is arranged outside the shell; the core bar is arranged in the shell in a sliding mode, the front end of the core bar extends out of the shell, a second measuring positioning ring is arranged at the front end of the core bar, and the diameter of the second measuring positioning ring is smaller than that of the first measuring positioning ring; the core rod is sleeved with a spring which enables the core rod to keep a stretching state;

the measuring head is arranged on the shell, and the measuring rod is abutted to the rear end face of the core rod.

Further, a strip-shaped limiting hole extending along the axis is formed in the core rod, and a limiting rod matched with the limiting hole is installed on the shell.

Further, the measurement display device is a digital display measuring instrument.

Furthermore, first measurement holding ring is for following the arch that the casing periphery equipartition set up constitutes.

Furthermore, the second measuring positioning ring is composed of three bulges which are uniformly distributed along the periphery of the core rod.

The utility model has the advantages that: the utility model discloses a during taper hole detector is measured, will measure in the seat stretches into the product taper hole of being surveyed, make the first measuring holding ring and the taper hole surface contact of casing, the core bar is under the effect of spring, the second of core bar measure the holding ring can with taper hole surface contact, because first measuring holding ring and the radius difference of second measuring holding ring known, the extension length accessible measuring head of core bar records to can obtain the taper value of taper hole, consequently adopt the utility model discloses a behind the measuring instrument, the taper hole is measured conveniently, and measurement accuracy is higher, thereby has guaranteed product quality, has reduced the emergence of quality accident.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the measuring base of the present invention;

FIG. 3 is a schematic view of the present invention when measuring the taper hole of a product;

FIG. 4 is a schematic view of FIG. 2 taken in the direction A;

shown in the figure: 1. the measuring device comprises a measuring display device, 2, a measuring seat, 3, a workpiece, 11, a measuring head, 12, a display device, 21, a shell, 22, a core rod, 23, a spring, 24, a limiting rod, 25, a protrusion, 26, a locking screw, 111, a measuring rod, 211, a first positioning ring and 221, a second positioning ring.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and fig. 2, the taper hole detector of the present invention includes a measuring display device 1 and a measuring base 2. The measurement display device 1 may be an existing digital display measurement instrument or a mechanical display measurement tool, such as: a dial gauge, etc. The measurement display device 1 comprises a measuring head 11 and a display device 12, and a measuring rod 111 is arranged in the measuring head 11. The measuring socket 2 comprises a housing 21 and a core rod 22. A first measuring positioning ring 211 is arranged outside the shell 21, the core rod 22 is slidably arranged in the shell 21, the front end of the core rod 22 extends out of the shell 21, a second measuring positioning ring 221 is arranged at the front end of the core rod 22, and the diameter of the second measuring positioning ring 221 is smaller than that of the first measuring positioning ring 211. The stem 22 is fitted with a spring 23 for keeping the stem 22 in an extended state. The measuring head 11 is mounted on the housing 21 such that the measuring rod 111 abuts against the rear end face of the core rod 22. Like this when measuring, as shown in fig. 3, earlier with core bar 22 withdrawal, measure display device zero set, will measure in the seat 2 inserts the taper hole of product 3 again, make first measurement holding ring 211 and taper hole surface contact on the casing 21, core bar 22 is under the effect of spring 23, the second of core bar 22 is measured holding ring 221 and can is with taper hole surface contact, because first measurement holding ring 211 and the second radius difference x of measuring holding ring 221 know, the displacement change of the extension length y accessible measuring stick 111 of core bar 22 is measured or is calculated, thereby can obtain the taper value of the taper hole of product according to the trigonometric function relation, consequently adopt the utility model discloses a back, the taper hole is measured conveniently, and measurement accuracy is higher, thereby has guaranteed product quality, has reduced the emergence of quality accident.

In the figure, in particular, the measuring head 11 is mounted on the housing 21 by means of locking screws 26.

For convenience of reading, the measurement display device is preferably an existing digital display measurement instrument, that is, the measurement head 11 is a sensor, and the display device 12 is a digital display meter.

As shown in fig. 1, the core rod 22 is provided with a limiting hole 222, the limiting hole 222 is a bar hole extending along the axis of the core rod 22, the length of the bar hole is set according to the measuring range of the measuring and displaying device 1, and the display shell 21 is provided with a limiting rod 24 matched with the limiting hole 222, so that the extending and retracting stroke of the core rod 22 is limited by the limiting rod 24, and the instrument is prevented from being damaged. The limiting rod 24 is shown as a screw threadedly coupled to the housing 21, but may be a pin engaged with the housing 21.

The first measuring positioning ring 211 and the second measuring ring 221 may be complete circular rings, as shown in fig. 4, the first measuring positioning ring 211 is composed of three protrusions 2 uniformly distributed along the outer circumference of the housing 21, that is, the contact surface between the instrument and the product taper hole is determined by the three-point positioning principle. Therefore, the measuring seat can be rotated during measurement, and the average value is obtained through multiple measurements, so that the measurement error is reduced. Similarly, the second measuring and positioning ring 221 is also composed of three protrusions 25 uniformly distributed along the outer periphery of the core rod 22.

Claims

1. Taper hole detector, its characterized in that: comprises a measuring display device (1) and a measuring seat (2); the measurement display device (1) comprises a measuring head (11) and a display device (12), and a measuring rod (111) is arranged in the measuring head (11); the measuring seat (2) comprises a shell (21) and a core rod (22);

a first measuring positioning ring (211) is arranged outside the shell (21); the core rod (22) is arranged in the shell (21) in a sliding mode, the front end of the core rod extends out of the shell (21), a second measuring positioning ring (221) is arranged at the front end of the core rod (22), and the diameter of the second measuring positioning ring (221) is smaller than that of the first measuring positioning ring (211); the core rod (22) is sleeved with a spring (23) which enables the core rod (22) to keep a stretching state;

the measuring head (11) is mounted on the housing (21) such that the measuring rod (111) abuts against the rear end face of the core rod (22).

2. The taper hole detector according to claim 1, wherein: the core rod (22) is provided with a strip-shaped limiting hole (222) extending along the axis, and the shell (21) is provided with a limiting rod (24) matched with the limiting hole (222).

3. The taper hole detector according to claim 1, wherein: the measurement display device (1) is a digital display measuring instrument.

4. The cone detector of claim 1, 2 or 3, wherein: the first measuring positioning ring (211) is composed of three bulges (25) uniformly distributed along the periphery of the shell (21).

5. The taper hole detector according to claim 4, wherein: the second measuring positioning ring (221) is composed of three bulges (25) which are uniformly distributed along the periphery of the core rod (22).