Device for detecting coaxiality of rotary shell

Abstract

The rotary shell coaxiality detection device comprises a base, a rotary table, a conical block, an electric push rod, a stand column, a lever indicator, a bearing, a supporting piece, a spring, a connecting cylinder and a cylinder body, the bearing is installed in the base, supporting piece sliding through grooves are evenly formed in the circumference of the upper end face of the rotary table, spring blind grooves are formed in the two side walls of each supporting piece sliding through groove respectively, and the spring blind grooves are communicated with the spring blind grooves. A spring is placed in each spring blind groove, the supporting piece is composed of a supporting rod and two supporting side rods, the rear end of the supporting rod is an inclined face, the two supporting side rods are installed in the spring blind grooves in the two sides respectively, the stand column is sleeved with the connecting cylinder, the lower end of the connecting cylinder is fixed to the rotary table, the connecting cylinder is sleeved with the conical block, and the conical face of the conical block is matched with the inclined face of the rear end of the supporting rod. The electric push rod comprises a barrel and two push rods, the barrel sleeves the connecting barrel, the upper end of the barrel is connected with the upper end of the connecting barrel through a pin, the upper ends of the push rods are symmetrically mounted between the connecting barrel and the barrel, the lower ends of the push rods are hinged to the conical block through pins, and a lever indicator is mounted on the stand column.

Description

Technical Field

[0001] The utility model relates to the field of rotary shell coaxiality detection devices, in particular to a rotary shell coaxiality detection tool. Background Art

[0002] During the production process of a certain type of rotating shell, it is necessary to ensure the coaxiality of the inner holes on the two end faces of the shell and the central boss to meet its performance requirements. In traditional methods, coaxiality gauges are usually used to determine and control the coaxiality error. However, for the coaxiality measurement of this shell, the measured element and the reference element are not at the same end and the distance is relatively long. Conventional coaxiality gauges are limited by their own manufacturing accuracy and cannot accurately determine whether the coaxiality error meets the tolerance requirements. The use of a three-coordinate measuring machine can effectively improve the measurement accuracy of the coaxiality error, but the detection process involves processes such as measuring instrument correction, program writing, detection and calculation. The process is cumbersome and time-consuming, and requires a high level of quality from the user. It cannot meet the detection rhythm requirements of the production line and achieve random sampling. Summary of the Invention

[0003] The purpose of the invention of the utility model is to provide a rotary shell coaxiality detection tool to solve the technical problem in the prior art that the shell coaxiality is difficult to be randomly detected and quantified in actual processing and production.

[0004] In order to achieve the invention purpose of this application, this application adopts the following technical solutions:

[0005] The utility model discloses a device for detecting the coaxiality of a rotary shell, which comprises: a base, a turntable, a conical block, an electric push rod, a column, a lever dial indicator, a bearing, a support, a spring, a connecting tube and a cylinder. A bearing is installed in the base, the outer ring of the bearing cooperates with the base, the lower end of the turntable is installed on the inner ring of the bearing, and the column passes through the turntable and is fixed to the base. The device is characterized in that: 3-6 support member sliding grooves are evenly opened on the circumference of the end face of the turntable, spring blind grooves are respectively opened on both side walls of the above-mentioned support member sliding groove, a spring is placed in the spring blind groove, the support member consists of a support rod and two support side rods, the rear end of the support rod is an inclined surface, the two support side rods are symmetrically distributed on both sides of the support rod, the support rod is installed in the support member sliding groove, the two support side rods are respectively installed in the spring blind grooves on both sides, the connecting tube sleeve The cam is fixed on the upper end of the shaft and the lower end of the shaft is hinged on the top of the shaft and the lower end of the shaft is hinged on the cam. The cam is fixed on the upper end of the shaft and the lower end of the shaft is hinged on the cam. The cam is fixed on the lower end of the shaft and the lower end of the shaft is hinged on the cam. The cam is fixed on the lower end of the shaft The utility model relates to a detection device for the coaxiality of a rotary shell, wherein: the lever dial indicator and the sliding ring are connected together through a pin; the sliding ring is sleeved on the column and fixed to the column through a fastening bolt.

[0006] The utility model provides a detection device for the coaxiality of a rotary shell, wherein: four support member sliding grooves are evenly opened on the circumference of the turntable.

[0007] The utility model provides a detection device for the coaxiality of a rotary shell, wherein the bearing comprises two ball bearings and a bearing retaining ring, and the bearing retaining ring is installed between the two ball bearings.

[0008] The utility model relates to a detection device for the coaxiality of a rotary shell, wherein two lever dial indicators are installed on a column above the electric push rod.

[0009] The utility model provides a device for detecting the coaxiality of a rotary shell, wherein the front end of the supporting side rod is arc-shaped and contacts the inner wall of the rotary shell.

[0010] The utility model provides a device for detecting the coaxiality of a rotary housing, wherein: the spring blind groove is a dovetail groove.

[0011] Beneficial effects

[0012] The shell coaxiality detection tool provided by this utility model uses the turntable positioning surface and the support members uniformly distributed on the turntable to locate the measurement reference, thereby measuring the data of the shell surface to be tested. The measured data is further used to quantify and determine the coaxiality error. Compared with the existing technology, the utility model has a simple structure, is easy to use, has high measurement efficiency, and provides accurate testing. It can not only be used for testing in the laboratory, but also for random inspection of shells in the industrial field at any time, timely screening of defective products, and greatly improving the processing quality of shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional schematic diagram of a rotary housing coaxiality detection device according to the present invention at one angle;

[0014] Figure 2 This is a three-dimensional schematic diagram of another angle of the rotary housing coaxiality detection device of the present invention;

[0015] Figure 3 It is a three-dimensional schematic diagram of a rotary housing coaxiality detection device of the present invention equipped with a rotary housing;

[0016] Figure 4 It is a top view schematic diagram of the rotary housing coaxiality detection device of the present invention;

[0017] Figure 5 for Figure 4 Schematic diagram of the cross section at AA;

[0018] Figure 6 is a three-dimensional schematic diagram of a support member;

[0019] Figure 7 A cross-sectional view of the support member sliding groove and spring blind groove.

[0020] exist Figures 1 to 7 Among them, number 1 is the base; number 2 is the turntable; number 3 is the tapered block; number 4 is the electric push rod; number 5 is the column; number 6 is the lever dial indicator; number 7 is the ball bearing; number 8 is the bearing retaining ring; number 9 is the rotary housing; number 10 is the support member; number 11 is the spring; number 12 is the connecting cylinder; number 13 is the pin; number 14 is the sliding ring; number 15 is the fastening bolt; number 16 is the push rod; number 17 is the support member sliding groove; number 18 is the spring blind groove; number 19 is the cylinder; number 51 is the internal threaded hole; number 100 is the support rod; number 101 is the support side rod. DETAILED DESCRIPTION

[0021] In order to make the structural features and usage of the present invention clearer, further description will be given below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 7 As shown, the detection device for the coaxiality of a rotary shell of the present invention includes: a base 1, a turntable 2, a tapered block 3, an electric push rod 4, a column 5, a lever dial indicator 6, a bearing, a support 10, a spring 11, a connecting tube 12 and a cylinder 19. A bearing is installed in the base 1, the outer ring of the bearing cooperates with the base 1, the lower end of the turntable 2 is mounted on the inner ring of the bearing, and the column 5 passes through the turntable 2 and is fixed to the base 1.

[0023] like Figures 1 to 7 As shown, four support member sliding grooves 17 are evenly opened on the circumference of the upper end surface of the turntable 2, and spring blind grooves 18 are respectively opened on the two side walls 2 of the above-mentioned support member sliding groove 17. The spring blind groove 18 is a dovetail groove, and a spring 11 is placed in the spring blind groove 18. The support member 10 is composed of a support rod 100 and two support side rods 101. The rear end of the support rod 100 is an inclined surface, and the two support side rods 101 are symmetrically distributed on both sides of the support rod 100. The support rod 100 is installed in the support member sliding groove 17, and the two support side rods 101 are respectively installed in the spring blind grooves 18 on both sides. The connecting tube 12 is sleeved on the column 5, and its lower end is fixed on the turntable 2. The conical block 3 is sleeved on the connecting tube 12 and slides up and down along the connecting tube 12. The conical surface of the conical block 3 cooperates with the inclined surface of the rear end of the above-mentioned support rod 100. The electric push rod 4 includes: a cylinder 19 and two push rods 16. The cylinder 19 is sleeved on the outside of the connecting cylinder 12, and the upper end of the cylinder 19 is connected to the upper end of the connecting cylinder 12 by a pin 13. The upper ends of the two push rods 16 are symmetrically installed between the connecting cylinder 12 and the cylinder 19, and their lower ends are hinged on the conical block 3 by a pin 13. Two lever dial indicators 6 are installed on the column 5, and the lever dial indicator 6 is connected to the sliding ring 14 by a fastening bolt 15. The sliding ring 14 is sleeved on the column 5 and fixed to the column 5 by a fastening bolt 15. The rotary shell 9 is sleeved on the turntable 2, and the push rod 16 pushes the conical block 3 to move downward. The conical block 3 pushes the support rod 100 outside the circumference of the turntable 2 until the outer side of the support rod 100 contacts the inner circumference of the rotary shell 9. The turntable 2 rotates, causing the rotary shell 9 to rotate with the turntable 2, and the lever dial indicator 6 contacts the inner wall of the rotary shell 9 to detect the coaxiality of the rotary shell 9.

[0024] The bearing comprises two ball bearings 7 and a bearing retaining ring 8 , wherein the bearing retaining ring 8 is installed between the two ball bearings 7 .

[0025] As a preferred technical solution, the lever dial indicator 6 can be replaced by a non-contact distance measuring sensor such as a laser rangefinder.

[0026] As a preferred technical solution, a stepping motor or the like can be provided to drive the turntable 2 to rotate.

[0027] As a preferred technical solution, when it is necessary to measure the coaxiality error of the outer surface of a rotary shell relative to the inner hole reference, a support frame can be extended on the column 5 to measure the outer surface.

[0028] The top of the column 5 is provided with an internally threaded hole 51 and an external hexagonal surface. The internally threaded hole 51 can be used to extend the length of the column 5 to meet the coaxiality measurement requirements of the inner hole of a long span. The external hexagonal surface is used with a wrench to facilitate the disassembly and assembly of the column 5. The sliding ring 14 can slide along the surface of the column 5 and is locked and fixed to any position of the column 5 by tightening bolts 15. The lever dial indicator 6 is connected to the sliding ring 14.

[0029] The steps of using the utility model are:

[0030] 1) Place the detection rotary housing 9 on a horizontal table, with the measurement reference end of the rotary housing 9 facing downward, and place it stably on the limit end of the base 2 through the column 5 and the positioning surface.

[0031] 2) Drive the electric push rod 4 to extend, and the electric push rod 4 drives the conical block 3 to slide downward. The conical surface of the conical block 3 contacts the inclined surface of the support member 10, and drives the evenly distributed support members 10 to slide outward along the support member sliding groove 17, so that the proximal arc surface of the support member 10 is supported on the surface of the reference hole of the rotary shell 9 to be measured, thereby positioning the measurement reference.

[0032] 3) Adjust the position and extension of the lever dial indicator 6 on the column 5 so that its probe contacts the surface of the rotary housing 9 to be measured.

[0033] 4) The motor (not shown) drives the turntable 2 to rotate it slowly and evenly, observe the fluctuation of the pointer of the lever dial indicator 6, read the value and calculate the coaxiality error.

[0034] 5) After the measurement is completed, the electric push rod 4 is driven to retract, and the electric push rod 4 drives the conical block 3 to slide upward, and the conical surface of the conical block 3 is separated from the inclined surface of the support member 10. The support member 10 slides inward along the support member sliding groove 17 under the elastic force of the spring 11 (the spring is in a compressed state during operation), and the distal arc surface of the support member 10 is out of contact with the rotary shell 9, and the rotary shell 9 is removed.

[0035] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A device for detecting the coaxiality of a rotary housing, comprising: A base (1), a turntable (2), a conical block (3), an electric push rod (4), a column (5), a lever dial indicator (6), a bearing, a support member (10), a spring (11), a connecting tube (12) and a cylinder (19), wherein a bearing is installed in the base (1), the outer ring of the bearing is matched with the base (1), the lower end of the turntable (2) is installed on the inner ring of the bearing, and the column (5) passes through the turntable (2) and is fixed on the base (1), characterized in that: 3-6 support member sliding grooves (17) are evenly opened on the circumference of the upper end surface of the turntable (2), and the support member sliding grooves ( 17) are respectively provided with spring blind grooves (18) on both side walls, and a spring (11) is placed in the spring blind groove (18). The support member (10) is composed of a support rod (100) and two support side rods (101). The rear end of the support rod (100) is an inclined surface. The two support side rods (101) are symmetrically distributed on both sides of the support rod (100). The support rod (100) is installed in the support member sliding groove (17). The two support side rods (101) are respectively installed in the spring blind grooves (18) on both sides. The connecting tube (12) is sleeved on the column (5), and its lower end is fixed on the rotating shaft. On the platform (2), the conical block (3) is mounted on the connecting cylinder (12) and slides up and down along the connecting cylinder (12). The conical surface of the conical block (3) matches the inclined surface of the rear end of the support rod (100). The electric push rod (4) includes: a cylinder (19) and two push rods (16). The cylinder (19) is mounted on the outside of the connecting cylinder (12). The upper end of the cylinder (19) is connected to the upper end of the connecting cylinder (12) through a pin (13). The upper ends of the two push rods (16) are symmetrically installed between the connecting cylinder (12) and the cylinder (19). The lower ends of the push rods (16) are hinged to the connecting cylinder (12) through the pin (13). At least one lever dial indicator (6) is mounted on the conical block (3) and the column (5). The rotary housing (9) is mounted on the turntable (2). The push rod (16) pushes the conical block (3) downward. The conical block (3) pushes the support rod (100) toward the outside of the circumference of the turntable (2) until the outer side of the support rod (100) contacts the inner circumference of the rotary housing (9). The turntable (2) rotates, causing the rotary housing (9) to rotate along with the turntable (2). The lever dial indicator (6) contacts the inner wall of the rotary housing (9) to detect the coaxiality of the rotary housing (9).

2. The device for detecting the coaxiality of a rotary housing according to claim 1, wherein: The lever dial indicator (6) is connected to the sliding ring (14) through a pin. The sliding ring (14) is sleeved on the column (5) and fixed to the column (5) through a fastening bolt (15).

3. The device for detecting the coaxiality of a rotary housing according to claim 2, wherein: Four support member sliding grooves (17) are evenly arranged on the circumference of the turntable (2).

4. The device for detecting the coaxiality of a rotary housing according to claim 3, wherein: The bearing comprises two ball bearings (7) and a bearing retaining ring (8), wherein the bearing retaining ring (8) is installed between the two ball bearings (7).

5. The device for detecting the coaxiality of a rotary housing according to claim 4, characterized in that: Two lever dial indicators (6) are installed on the column (5) above the electric push rod (4).

6. The device for detecting the coaxiality of a rotary housing according to claim 5, wherein: The front end of the supporting side rod (101) is arc-shaped and contacts the inner wall of the rotary shell (9).

7. The device for detecting the coaxiality of a rotary housing according to claim 6, wherein: The spring blind groove (18) is a dovetail groove.

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