CN107478125B

CN107478125B - Inner hole jumping measuring device

Info

Publication number: CN107478125B
Application number: CN201710676277.XA
Authority: CN
Inventors: 聂修远
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-09
Filing date: 2017-08-09
Publication date: 2020-09-18
Anticipated expiration: 2037-08-09
Also published as: CN107478125A

Abstract

The invention relates to an inner hole run-out measuring device, which comprises a base, a measuring meter, a fixed center tailstock and a movable center tailstock, a first center and a second center, wherein the fixed center tailstock and the movable center tailstock are arranged at two ends of the base; this application uses the centre bore to beat as the benchmark detection hole, and the gauge head of gauge table passes the gauge hole, salient outside top, and the work piece hole that the gauge head contact awaits measuring rotates, and the hole is beated and is reflected the dial plate to the gauge table through the gauge head, can see the change of dial plate pointer through visual window, and the hole of accurate measurement product is beated.

Description

Inner hole jumping measuring device

Technical Field

The invention relates to a measuring device for detecting inner hole run-out by taking a central hole as a reference, belonging to the technical field of inner hole run-out measuring devices.

Background

The traditional method for detecting the jump of the inner hole of a measuring product to the central hole in the industry at present is as follows:

1. the three-coordinate measuring instrument is used for measuring the runout of the reference surface of the central hole and the processing surface of the inner hole of the product, and the three-coordinate measuring instrument is used for measuring the runout, although the precision is higher, the efficiency is low.

2. Positioning the workpiece by the center hole, finely grinding two supporting excircles of the workpiece by using an excircle grinding machine, then placing the workpiece on a V-shaped block on a working table surface, and checking the jumping of a processing surface by using a dial indicator. The method can be measured only after the excircle is finely ground, real-time monitoring cannot be achieved, and errors are large after the reference conversion is carried out.

In summary, a device capable of rapidly and accurately measuring the inner hole run-out based on the central hole is lacked in the industry.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a measuring device for quickly and accurately measuring the inner hole jump by taking a central hole as a reference.

The technical scheme adopted for realizing the purpose of the invention is that the inner hole run-out measuring device at least comprises a base and a measuring meter positioned on the base, wherein a fixed centre tailstock and a movable centre tailstock are respectively arranged at two ends of the base; the measuring instrument is characterized in that the first tip is internally of a hollow structure, a visible window is formed in the surface of the first tip, the fixed tip tailstock is installed on the base through a gasket, a nut and a trapezoidal bolt, the gasket is located between the nut and the base, the gasket and the nut are located inside the fixed tip tailstock, a support is installed inside the fixed tip tailstock and comprises a gauge stand, a gauge stand adjusting rod and a supporting rod, the measuring instrument is fixed on the gauge stand, the gauge stand and the gauge stand adjusting rod and the supporting rod are connected through threaded fasteners, the gauge stand adjusting rod and the supporting rod are of a structure with one end provided with a threaded hole and the other end provided with a straight-through hole, a threaded hole is formed in the end of the gauge stand connected with the gauge stand adjusting rod, the supporting rod is connected with the gasket through a set screw, the measuring instrument is installed in the first tip through the support, the dial, the measuring head of the measuring gauge passes through the measuring hole and protrudes out of the tip.

The measuring meter is a dial indicator.

And a tailstock handle and a tip handle are arranged on the movable tip tailstock.

According to the technical scheme, the inner hole runout measuring device provided by the invention has the advantages that the workpiece to be detected is fixed through the two top tailstocks, the workpiece rotates around the central line (the connecting line of the two tops), one of the two tops is the fixed top, the inner part of the fixed top is hollow, and the detecting meter is located in the hollow space.

Compared with the prior art, the inner hole run-out measuring device provided by the invention has the following advantages:

1. the inner hole jumping measuring device provided by the invention has the advantages of simple structure, convenience in workpiece installation and replacement, simplicity and convenience in measuring operation, high product detection efficiency and remarkable economic benefit, and the rejection rate of products in processing is reduced, so that the cost of processing waste products is reduced;

2. the inner hole run-out measuring device provided by the invention can measure in real time, the measurement is accurate, the error is extremely small, the measuring element is a dial indicator, the inner hole run-out of a product can be directly read from the dial indicator, and the product quality is fully ensured;

3. the position of the dial indicator of the inner hole run-out measuring device provided by the invention is adjustable, the mounting height of the dial indicator and the extension length of the measuring head can be adjusted through the bracket, and the inner hole run-out measuring device is suitable for measuring inner holes with different apertures and hole depths;

4. in the inner hole jump measuring device provided by the invention, the dial indicator and the bracket are both arranged in the device, and no structure is arranged outside, so that the device is not interfered by the environment during detection;

5. the external structures of the centre and the centre tailstock in the inner hole run-out measuring device provided by the invention are the same as those of the existing centre and centre tailstock, and the external structure of the working part is not changed, so that the centre and the centre tailstock can be directly used in other processing occasions;

6. according to the inner hole run-out measuring device provided by the invention, when in detection, the inner hole run-out can be measured by rotating the workpiece for one circle, so that a complex clamping assembly is not needed, the workpiece to be detected can be fixed through the two tip tailstocks, the tip of the movable tip tailstock is a rotating tip and rotates together with the workpiece, and the fixed structure is adopted to facilitate the replacement of the workpiece.

Drawings

Fig. 1 is a front view of the inner bore run-out measuring device provided by the invention.

Fig. 2 is a view showing the installation structure of the measurement table and the bracket.

Fig. 3 is a top view of the inner bore run-out measuring device provided by the invention.

The measuring instrument comprises a fixed center tailstock, a first center, a visible window, a movable center tailstock, a second center, a measuring instrument, a dial plate, a measuring head, a support, a meter seat adjusting rod, a supporting rod, a base, a nut, a gasket, a trapezoid bolt, a fastening screw, a tail seat handle, a center handle and a workpiece, wherein the fixed center tailstock, the first center, the visible window, the movable center tailstock, the measuring instrument, the meter seat, the dial plate, the measuring head, the support, the meter.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples, and the present invention is not limited to the examples.

An inner hole run-out measuring device comprises a base 7, a measuring instrument 5, a fixed center tailstock 1 and a movable center tailstock 3 which are positioned at two ends of the base 7, a first center 2 arranged on the fixed center tailstock 1, and a second center 4 arranged on the movable center tailstock 3, wherein in the embodiment, the measuring instrument 5 is a dial indicator, the first center 2 is a fixed center, the second center 4 is a rotating center, and the second center 4 rotates together with a workpiece 14;

the movable center tailstock comprises a fixed center tailstock 1, a movable center tailstock 3, a center handle 13, a tailstock handle 12, a center handle 13, a gasket 9, a nut 8 and a trapezoidal bolt 10, wherein the fixed center tailstock 1 is installed on a base 7 through the gasket 9, the nut 8 and the trapezoidal bolt 10, the gasket 9 is positioned between the nut 8 and the base 7, the movable center tailstock 3 is installed on the base through a linear displacement mechanism and can slide on the base, the movable center tailstock 3 is provided with the tailstock handle 12 and the center handle 13, the tailstock handle 12 is used for locking the movable center tailstock 3 after being moved to a proper position, and the center handle 13 is used for locking a second center 4;

the first center 2 is of a hollow structure, a visible window 21 is formed in the surface of the first center, a cavity is also formed in the fixed center tailstock 1, the gasket 9 and the nut 8 are located in the fixed center tailstock 1, a support 6 is installed in the cavity, the support 6 is composed of a gauge stand 61, a gauge stand adjusting rod 62 and a support rod 63, the gauge stand 61 and the gauge stand adjusting rod 62 are connected through threaded fasteners, the gauge stand adjusting rod 62 and the support rod 63 are of a structure, one end of the structure is provided with a threaded hole, the other end of the structure is provided with a straight-through hole, the end of the gauge stand 61 connected with the gauge stand adjusting rod 62 is provided with a threaded hole, and the low end of the support rod 63 is connected with the gasket 9 through a set screw 11;

the measuring instrument 5 is supported and fixed through the support 6 and located in the first tip 2, the measuring instrument 5 is fixed on the instrument base 61, the dial 51 of the measuring instrument 5 is opposite to the visible window 21, the head of the first tip 2 is provided with a measuring hole, and the measuring head 52 of the measuring instrument 5 penetrates through the measuring hole and protrudes out of the tip.

During the in-service use, install live center tailstock 1 at base 7 suitable position and through gasket 9, nut 8 and trapezoidal bolt 10 locking are fixed, live center tailstock 3 slides on base 7, the position of live center tailstock 3 is adjusted according to the length of work piece 14, adjust the back and pass through tailstock handle 12 fixed live center tailstock 3, install the percentage table on support 6 afterwards, place the percentage table in the suitable position that detects the work piece hole and beat, with holding screw 11 fixed bolster 6, then rotatory work piece, it can to observe the dial plate of percentage table and accurately note down the reading through visual window 21.

Claims

1. The utility model provides an inner hole measuring device that beats, includes the base at least and is located the gauge on it, its characterized in that: the two ends of the base are respectively provided with a fixed centre tailstock and a movable centre tailstock, a first centre is arranged on the fixed centre tailstock, the first centre is a fixed centre, a second centre is arranged on the movable centre tailstock, the second centre is a rotating centre, and a tailstock handle and a centre handle are arranged on the movable centre tailstock; the measuring instrument is characterized in that the first tip is internally of a hollow structure, a visible window is formed in the surface of the first tip, the fixed tip tailstock is installed on the base through a gasket, a nut and a trapezoidal bolt, the gasket is located between the nut and the base, the gasket and the nut are located inside the fixed tip tailstock, a support is installed inside the fixed tip tailstock and comprises a gauge stand, a gauge stand adjusting rod and a supporting rod, the measuring instrument is fixed on the gauge stand, the gauge stand and the gauge stand adjusting rod and the supporting rod are connected through threaded fasteners, the gauge stand adjusting rod and the supporting rod are of a structure with one end provided with a threaded hole and the other end provided with a straight-through hole, a threaded hole is formed in the end of the gauge stand connected with the gauge stand adjusting rod, the supporting rod is connected with the gasket through a set screw, the measuring instrument is installed in the first tip through the support, the dial, the measuring head of the measuring gauge passes through the measuring hole and protrudes out of the tip.

2. The bore runout measuring apparatus of claim 1, wherein: the measuring meter is a dial indicator.