CN111721185A - A portable inner hole taper detection device - Google Patents

Abstract

The invention discloses a portable inner hole taper detection device, which belongs to the technical field of rapid taper detection. The portable inner hole taper detection device includes a handle, a dial gauge, a split measuring head, a transmission measuring rod and a workpiece; the dial gauge is fixedly connected to the top of the handle, and the gauge head passes through the handle and communicates with the transmission. The measuring rod is in contact; the split type measuring head is fixedly connected to the end of the handle, inserted into the workpiece, and detects the taper of the inner hole; the transmission measuring rod is located in the handle, and the two ends are respectively connected with the gauge head and the measuring rod. The split measuring head contacts. The portable inner hole taper detection device separately measures the major diameter and the minor diameter of the inner conical hole of the workpiece through a split measuring head, so as to avoid the stuck phenomenon when using a taper rod or a plug gauge to detect the inner conical hole, and reduce the technical difficulty of operation at the same time. , reduce testing costs.

Description

A portable inner hole taper detection device

technical field

The invention relates to the technical field of rapid taper detection, in particular to a portable inner hole taper detection device.

Background technique

At present, the lathe spindles, external spindles, etc. on the market have the characteristics of matching taper surfaces in the inner hole of the nose end of the shaft core and the outer circumference of the nose end. Quality control and other departments usually use standard taper rods and taper plug gauges combined with sludge when testing whether the taper of the inner cone hole and outer cone surface at the nose end of the shaft core or other parts meets the design requirements. The coverage rate on the core is used to measure the taper of the inner hole; the three-coordinate measuring instrument combined with the probe is used to measure the size of the outer taper at the corresponding position. The measurement of the outer taper can be easily done under the action of the three-coordinate measuring instrument, but the constant method of measuring the inner taper has certain limitations, and the technical requirements of the operator are relatively high. If the axis is skewed, there will be a phenomenon that the taper rod and the shaft core are skewed and stuck, which will have a certain impact on the measurement accuracy of the shaft core taper.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a portable inner hole taper detection device, so as to solve the problem that the detection of the inner taper of the traditional taper rod or plug gauge is difficult, and it is easy to be stuck due to skew.

In order to solve the above technical problems, the present invention provides a portable inner hole taper detection device, including a handle, a dial indicator, a split measuring head, a transmission measuring rod and a workpiece;

The dial indicator is fixedly connected to the top of the handle, and the gauge head passes through the handle and contacts the transmission measuring rod;

The split-type measuring head is fixedly connected to the end of the handle, inserted into the workpiece, and detects the taper of the inner hole;

The transmission measuring rod is located in the handle, and the two ends are respectively in contact with the meter head and the split measuring head.

Optionally, the split measuring head is composed of a large diameter measuring column, a small diameter measuring column, a sliding rod, a measuring spring and a positioning plate; the bottom surface of the positioning plate is fixedly connected with the large diameter measuring column, and the top surface is connected to the The connecting plate of the handle is fixedly connected; the bottom end of the sliding rod is fixedly connected with the small diameter measuring column, and the top end passes through the large diameter measuring column and the positioning plate is in contact with the transmission measuring rod; Through the sliding rod, both ends are respectively fixedly connected with the large diameter measuring column and the small diameter measuring column.

Optionally, a stepped through hole is opened in the large diameter measuring column, the sliding rod slides back and forth along the inner wall of the small hole; the measuring spring is fixedly connected to the step of the stepped through hole.

Optionally, the sliding rod is provided with a first sliding groove, and the first sliding groove passes through a first pin that is fixedly connected to the large diameter measuring column; the sliding rod slides along the first sliding groove. The slot slides back and forth.

Optionally, a conical hole is opened in the workpiece, the top of the conical hole is a large-diameter hole, and the bottom end is a small-diameter hole; after the split measuring head is inserted into the conical hole, it is detected by the large-diameter measuring column. The diameter of the large-diameter hole is detected by the small-diameter measuring column.

Optionally, the transmission measuring rod includes a rod body, a guide block, a return spring and a measuring head; the guide block is fixedly connected with the inner wall of the handle, and the rod body passes through and slides back and forth along the guide block.

Optionally, the rod body is provided with a spring fixing block, the return spring passes through the rod body, and the two ends are respectively fixedly connected to the guide block and the spring fixing block.

Optionally, the rod body is provided with a second chute through which a second pin is fixedly connected to the inner wall of the handle; the rod body slides back and forth along the second chute .

A portable inner hole taper detection device provided by the present invention includes a handle, a dial indicator, a split measuring head, a transmission measuring rod and a workpiece; the dial indicator is fixedly connected to the top of the handle, and the gauge head passes through The handle is in contact with the transmission measuring rod; the split type measuring head is fixedly connected to the end of the handle, inserted into the workpiece, and detects the taper of the inner hole; the transmission measuring rod is located in the handle, with both ends respectively contact with the meter head and the separate measuring head. The portable inner hole taper detection device separately measures the major diameter and the minor diameter of the inner conical hole of the workpiece through a split measuring head, so as to avoid the stuck phenomenon when using a taper rod or a plug gauge to detect the inner conical hole, and reduce the technical difficulty of operation at the same time. , reduce testing costs.

Description of drawings

1 is a schematic diagram of the overall structure of a portable inner hole taper detection device provided by the present invention;

2 is an overall cross-sectional view of a portable inner hole taper detection device provided by the present invention;

3 is a cross-sectional view of a split measuring head of a portable inner hole taper detection device provided by the present invention;

4 is a schematic structural diagram of a sliding rod of a portable inner hole taper detection device provided by the present invention;

5 is a schematic structural diagram of a workpiece of a portable inner hole taper detection device provided by the present invention;

FIG. 6 is a cross-sectional view of a transmission measuring rod of a portable inner hole taper detection device provided by the present invention.

Detailed ways

A portable inner hole taper detection device proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become apparent from the following description and claims. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

Example 1

The present invention provides a portable inner hole taper detection device, the structure of which is shown in Figure 1, including a handle 1, a dial indicator 2, a split measuring head 3, a transmission measuring rod 4 and a workpiece 5; the dial indicator 2 It is fixedly connected to the top of the handle 1, and the meter head 21 passes through the handle 1 to contact the transmission measuring rod 4; the split measuring head 3 is fixedly connected to the end of the handle 1, and is inserted into the workpiece 5, The taper of the inner hole is detected; the transmission measuring rod 4 is located in the handle 1 , and the two ends are respectively in contact with the meter head 21 and the split measuring head 3 .

Specifically, as shown in FIG. 2 and FIG. 3 , the split type measuring head 3 is composed of a large diameter measuring column 31, a small diameter measuring column 32, a sliding rod 33, a measuring spring 34 and a positioning plate 35; the bottom surface of the positioning plate 35 is connected to the The large diameter measuring column 31 is fixedly connected, and the top surface is fixedly connected with the connecting plate 11 of the handle 1 through bolts; the bottom end of the sliding rod 33 is fixedly connected with the small diameter measuring column 32, and the top end passes through the large diameter The measuring column 31 and the positioning plate 35 are in contact with the transmission measuring rod 4; the measuring spring 34 passes through the sliding rod 33, and the two ends are respectively fixed with the large diameter measuring column 31 and the small diameter measuring column 32 connection; the large diameter measuring column 31 has a stepped through hole, and the sliding rod 33 slides back and forth along the inner wall of the small hole; the measuring spring 34 is fixedly connected to the step of the stepped through hole.

Further, as shown in FIG. 4 , the sliding rod 33 is provided with a first sliding groove 331 , and the first sliding groove 331 passes through a first pin 332 fixedly connected with the large diameter measuring column 31 ; The sliding rod 33 slides back and forth along the first sliding groove 331 .

Specifically, as shown in FIG. 5 , the workpiece 5 is provided with a conical hole 51, the top of the conical hole 51 is a large-diameter hole 52, and the bottom end is a small-diameter hole 53; the split measuring head 3 is inserted into the cone After the hole 51 is drilled, the large-diameter measuring column 31 detects the diameter of the large-diameter hole 52 , and the small-diameter measuring column 32 detects the diameter of the small-diameter hole 53 .

Specifically, as shown in FIG. 6 , the transmission measuring rod 4 includes a rod body 41 , a guide block 42 , a return spring 43 and a measuring head 44 ; the guide block 42 is fixedly connected with the inner wall of the handle 1 , and the rod body 41 passes through The rod body 41 is provided with a spring fixing block 411, the return spring 43 passes through the rod body 41, and the two ends are respectively connected with the guide block 42 and the spring fixing block 411 is fixedly connected; the rod body 41 is provided with a second chute 412, and a second pin 413 that is fixedly connected to the inner wall of the handle 1 passes through the second chute 412; the rod body 41 runs along the The second chute 412 slides back and forth.

Specifically, when detecting the taper of the inner taper hole, first insert the split measuring head 3 of the portable inner hole taper detection device into the inner taper hole, and the small diameter measuring column 32 first contacts the small hole at the bottom end, Continue to press down until the large-diameter measuring column 31 is in contact with the large hole at the top; the sliding rod 33 slides upward in the large-diameter measuring column 31 under the action of bottoming out the small-diameter measuring column 32 and is connected to the transmission measuring column 31 . The measuring head 44 of the rod 4 is in contact, and the transmission measuring rod 4 transmits the displacement to the head 21 of the dial indicator 2 , which can be judged by reading the data of the dial indicator 2 Whether the two ends of the inner tapered hole meet the technical requirements, so as to judge whether the taper of the inner tapered hole is processed in place. After the detection is completed, the large diameter measuring column 31 is ejected under the elastic force of the measuring spring 34 by removing the downward pressure, and then the small diameter measuring column 32 can be removed from the inner cone hole by lifting the split measuring head 3 upward. When taking out, since the large diameter measuring column 31 and the small diameter measuring column 32 have small contact surfaces with the inner tapered hole, it can prevent the occurrence of jamming, reduce the technical difficulty of operation, and reduce the detection cost.

The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosure all belong to the protection scope of the claims.

Claims (8)

1. A portable inner hole taper detection device is characterized by comprising a handle (1), a dial indicator (2), a split type measuring head (3), a transmission measuring rod (4) and a workpiece (5);

the dial indicator (2) is fixedly connected to the top end of the handle (1), and the indicator head (21) penetrates through the handle (1) to be in contact with the transmission measuring rod (4);

the split measuring head (3) is fixedly connected to the tail end of the handle (1), is inserted into the workpiece (5), and detects the taper of the inner hole;

the transmission measuring rod (4) is positioned in the handle (1), and two ends of the transmission measuring rod are respectively contacted with the gauge outfit (21) and the split measuring head (3).

2. The portable inner bore taper detection device according to claim 1, wherein the split measuring head (3) comprises a large diameter measuring column (31), a small diameter measuring column (32), a sliding rod (33), a measuring spring (34) and a positioning plate (35); the bottom surface of the positioning plate (35) is fixedly connected with the large-diameter measuring column (31), and the top surface of the positioning plate is fixedly connected with the connecting disc (11) of the handle (1) through a bolt; the bottom end of the sliding rod (33) is fixedly connected with the small-diameter measuring column (32), and the top end of the sliding rod penetrates through the large-diameter measuring column (31) and the positioning plate (35) to be in contact with the transmission measuring rod (4); the measuring spring (34) penetrates through the sliding rod (33), and two ends of the measuring spring are fixedly connected with the large-diameter measuring column (31) and the small-diameter measuring column (32) respectively.

3. The portable inner hole taper detection device as claimed in claim 2, wherein a stepped through hole is formed in the large-diameter measurement column (31), and the sliding rod (33) slides back and forth along the inner wall of the small hole; the measuring spring (34) is fixedly connected to the step of the step through hole.

4. The portable bore taper detection device according to claim 2, wherein the slide bar (33) is provided with a first slide slot (331), and a first pin (332) fixedly connected with the major diameter measuring column (31) passes through the first slide slot (331); the sliding rod (33) slides back and forth along the first sliding groove (331).

5. The portable inner bore taper detection device according to claim 2, wherein a conical bore (51) is formed in the workpiece (5), the conical bore (51) has a large-diameter bore (52) at the top end and a small-diameter bore (53) at the bottom end; after the split measuring head (3) is inserted into the conical hole (51), the diameter size of the large-diameter hole (52) is detected by the large-diameter measuring column (31), and the diameter size of the small-diameter hole (53) is detected by the small-diameter measuring column (32).

6. The portable inner hole taper detection device is characterized in that the transmission measuring rod (4) comprises a rod body (41), a guide block (42), a return spring (43) and a measuring head (44); the guide block (42) is fixedly connected with the inner wall of the handle (1), and the rod body (41) penetrates through and slides back and forth along the guide block (42).

7. The portable inner hole taper detection device according to claim 6, wherein a spring fixing block (411) is arranged on the rod body (41), the return spring (43) penetrates through the rod body (41), and two ends of the return spring are respectively fixedly connected with the guide block (42) and the spring fixing block (411).

8. The portable inner bore taper detection device according to claim 6, wherein a second sliding groove (412) is formed on the rod body (41), and a second pin (413) fixedly connected with the inner wall of the handle (1) passes through the second sliding groove (412); the rod body (41) slides back and forth along the second sliding groove (412).

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