CN221859529U - A screw concentricity detection fixture - Google Patents

Abstract

The utility model relates to the technical field of screw rod detection and discloses a screw rod concentricity detection jig which comprises a bottom plate, wherein the left end of the top of the bottom plate is fixedly connected with a fixed seat, the left side of the fixed seat is rotationally connected with a rotary table, a cavity is formed in the fixed seat, the right end of the rotary table is fixedly connected with a rotary rod, the right end of the rotary rod is fixedly connected with a rotary plate, the inner wall of the left end of the rotary plate is fixedly connected with a driving assembly, strip openings are formed in the front, the rear, the upper and the lower sides of the right end of the rotary plate, threaded rods are rotationally connected to the inner walls of the front, the rear, the upper and the lower sides of the rotary plate, and driven bevel gears are fixedly connected to the opposite sides of the threaded rods. According to the utility model, the screw rod is fixed, so that different screw rods can be fixed conveniently, the different screw rods can be detected in a rotating way, the trouble of manually adjusting the screw rods to detect is avoided, the detection error is reduced, and the stability is improved.

Description

A screw concentricity detection fixture

Technical Field

The utility model relates to the technical field of screw rod detection, in particular to a screw rod concentricity detection fixture.

Background Art

The screw concentricity test fixture is a tool or device used to test and verify the coaxiality (concentricity) of the screw device. In mechanical systems, screws are usually used to rotate or move parts, so ensuring the concentricity of the screw is an important factor in ensuring the accuracy and performance of the system. The concentricity test fixture is designed to evaluate the assembly quality of the screw and the corresponding equipment to ensure its reliability and performance during operation.

In the prior art, when some screw concentricity detection jigs are used, the screw is usually placed on a tray and the concentricity is detected by manually rotating the screw. However, this method has certain errors. The screw will shake due to manual influence, resulting in large deviations in the detection results, affecting the detection data. Therefore, in response to the above problems, a screw concentricity detection jig is proposed.

Utility Model Content

The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a screw concentricity detection fixture, which aims to improve the prior art of concentricity detection by manually rotating the screw, but this method has certain errors, the screw will shake due to manual influence, thereby affecting the detection data.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A screw rod concentricity detection fixture comprises a base plate, the top left end of the base plate is fixedly connected to a fixing seat, the left side of the fixing seat is rotatably connected to a turntable, a cavity is arranged inside the fixing seat, the right end of the turntable is fixedly connected to a rotating rod, the right end of the rotating rod is fixedly connected to a rotating plate, the left end inner wall of the rotating plate is fixedly connected to a driving assembly, the right end of the rotating plate is provided with long strip openings on both the front, back, upper and lower sides, the front, back, upper and lower inner walls of the rotating plate are rotatably connected to a threaded rod, the opposite side of the threaded rod is fixedly connected to a driven bevel gear, the driving assembly is meshedly connected to the driven bevel gear, the external thread of the threaded rod is connected to a slider, the top of the slider is fixedly connected to a support rod, and the top of the support rod is fixedly connected to a clamping block.

Furthermore, a fixed plate is fixedly connected to the top right end of the base plate, sliding rods are fixedly connected to both sides of the left end of the fixed plate, a sliding plate is slidably connected to the outer side of the sliding rod, an electric push rod is fixedly connected to the top of the sliding plate, and a support plate is fixedly connected to the top of the electric push rod.

Furthermore, the right end of the support rod passes through the right side of the long strip opening and extends outward.

Furthermore, the driving assembly includes a motor, the left end of the motor is fixedly connected to the left inner wall of the rotating plate, the driving end of the motor is fixedly connected to a driving bevel gear, and the driving bevel gear is meshingly connected to the driven bevel gear.

Furthermore, the top rear end of the base plate is fixedly connected to a linear guide rail, the top of the linear guide rail is slidably connected to a movable block, the top of the movable block is fixedly connected to a movable rod, the outer side of the movable rod is slidably connected to a connecting plate, and the front end of the connecting plate is fixedly connected to a detection table.

Furthermore, the top of the movable rod is fixedly connected to a limiting block, and the rear end of the connecting plate is threadedly connected to a bolt.

Furthermore, one side of the outer portion of the rotating plate is rotatably connected to the inner wall of the cavity.

Furthermore, the other end of the sliding rod is fixedly connected to the bottom of the right end of the fixing seat.

The utility model has the following beneficial effects:

In the utility model, the screw rod is fixed by the mutual cooperation of the rotating plate, the long strip mouth, the motor, the active bevel gear, the threaded rod, the driven bevel gear, the slider, the support rod, the clamping block and other structures, which is conducive to fixing different screw rods so as to perform rotation detection on different screw rods, avoid the trouble of manually adjusting the screw rod for detection, reduce the detection error, and improve stability; by the mutual cooperation of the sliding rod, the sliding plate, the electric push rod, the support plate and other structures, the screw rods of different lengths can be lifted, and different types of screw rods can also be adjusted, which facilitates and stabilizes the measurement operation and improves the flexibility of use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a three-dimensional schematic diagram of a screw concentricity detection fixture proposed by the present invention;

FIG2 is a schematic diagram of the structure of a movable block of a screw concentricity detection fixture proposed by the present invention;

Figure 3 is an enlarged view of point A in Figure 2;

FIG4 is a schematic diagram of the internal structure of a rotating plate of a screw concentricity detection fixture proposed by the present invention;

FIG5 is a schematic diagram of the internal structure of a fixing seat of a screw concentricity detection fixture proposed by the present invention.

Legend:

1. Base plate; 2. Fixed seat; 3. Turntable; 4. Rotating rod; 5. Rotating plate; 6. Long strip mouth; 701, motor; 702, Active bevel gear; 8. Threaded rod; 9. Driven bevel gear; 10. Slider; 11. Support rod; 12. Clamping block; 13. Fixed plate; 14. Sliding rod; 15. Sliding plate; 16. Electric push rod; 17. Support plate; 18. Linear guide; 19. Movable block; 20. Movable rod; 21. Connecting plate; 22. Limit block; 23. Inspection table; 24. Bolt.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

With reference to Fig. 1, Fig. 3 and Fig. 5, an embodiment of the utility model is provided: a screw concentricity detection fixture, comprising a base plate 1, a fixed seat 2 is fixedly connected to the top left end of the base plate 1, a turntable 3 is rotatably connected to the left side of the fixed seat 2, the turntable 3 contains a handle and can be rotated, a cavity is arranged inside the fixed seat 2, a rotating rod 4 is fixedly connected to the right end of the turntable 3, the rotating rod 4 starts to rotate under the action of the turntable 3, a rotating plate 5 is fixedly connected to the right end of the rotating rod 4, one end of the screw is fixed on the rotating plate 5, an outer side of the rotating plate 5 is rotatably connected to the inner wall of the cavity, a driving assembly is fixedly connected to the inner wall of the left end of the rotating plate 5, and the driving assembly comprises a motor 701, the motor 701 can provide its power source, the left end of the motor 701 is fixedly connected to the left inner wall of the rotating plate 5, the driving end of the motor 701 is fixedly connected to the active bevel gear 702, the driving end of the motor 701 drives the active bevel gear 702 to move, and the active bevel gear 702 is meshed with the driven bevel gear 9.

Referring to Figures 2-4, a long strip opening 6 is opened on the front, back, upper and lower sides of the right end of the rotating plate 5, and the inner walls of the front, back, upper and lower sides of the rotating plate 5 are rotatably connected with threaded rods 8. The threaded rods 8 are arranged opposite to each other in pairs, and the opposite sides of the threaded rods 8 are fixedly connected with driven bevel gears 9. The driving assembly is meshed with the driven bevel gear 9. The external thread of the threaded rod 8 is connected with a slider 10, and the slider 10 moves on the threaded rod 8. The top of the slider 10 is fixedly connected with a support rod 11, and the support rod 11 moves in the long strip opening 6, and the maximum movement distance is the length of the long strip opening 6. The right end of the support rod 11 passes through the right side of the long strip opening 6 and extends outward. The top of the support rod 11 is fixedly connected with a clamping block 12, and the clamping block 12 can limit and fix the screw rod.

Referring to Figure 1-2, the top right end of the base plate 1 is fixedly connected to a fixed plate 13, and both sides of the left end of the fixed plate 13 are fixedly connected to sliding rods 14. The other end of the sliding rod 14 is fixedly connected to the bottom of the right end of the fixed seat 2. The outer side of the sliding rod 14 is slidably connected to a sliding plate 15, and the sliding plate 15 moves on the sliding rod 14. The top of the sliding plate 15 is fixedly connected to an electric push rod 16, and the top of the electric push rod 16 is fixedly connected to a supporting plate 17. The electric push rod 16 can drive the supporting plate 17 to move, so that the length and height of the screw rod are determined. The top rear end of the base plate 1 is fixedly connected to a linear guide rail 18, and the linear guide rail The top of 18 is slidably connected with a movable block 19, and the movable block 19 moves on the linear guide 18. The top of the movable block 19 is fixedly connected with a movable rod 20. The outer side of the movable rod 20 is slidably connected with a connecting plate 21, and the connecting plate 21 moves on the movable rod 20. The front end of the connecting plate 21 is fixedly connected with a detection table 23, and the connecting plate 21 is connected to the detection table 23. The top of the movable rod 20 is fixedly connected with a limit block 22. The setting of the limit block 22 prevents the connecting plate 21 from leaving the movable rod 20. The rear end of the connecting plate 21 is threadedly connected with a bolt 24, and the bolt 24 can determine the height of the connecting plate 21.

Working principle: When the screw needs to be inspected, one end of the screw is placed in the rotating plate 5, and the motor 701 is started, so that the driving end of the motor 701 drives the active bevel gear 702 to start rotating, and the driven bevel gear 9 rotates accordingly. Under the continuous action, the slider 10 starts to move toward the center, so that the support rod 11 and the clamping block 12 gradually move toward the center, and then clamp one end of the screw to limit the position, and at the same time, the other end adjusts the position of the sliding plate 15 according to the length and height of the screw, and at the same time, the electric push rod 16 lifts the support plate 17. Make the screw rod in a horizontal position. At this time, the movable block 19 moves on the linear guide rail 18. It can be adjusted accordingly according to the measuring position. The height of the connecting plate 21 is adjusted so that the bottom of the detection table 23 contacts the surface of the screw rod. At the same time, after adjustment, the bolt 24 is tightened to fix the height of the connecting plate 21. At this time, the turntable 3 is rotated to make the rotating rod 4 and the rotating plate 5 start to rotate, so that the measuring head at the bottom of the detection table 23 starts to measure. The staff can view the data on the detection table 23, thereby completing the measurement operation and improving work efficiency.

Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A screw concentricity detection fixture, comprising a base plate (1), characterized in that: the top left end of the base plate (1) is fixedly connected to a fixed seat (2), the left side of the fixed seat (2) is rotatably connected to a turntable (3), a cavity is provided inside the fixed seat (2), the right end of the turntable (3) is fixedly connected to a rotating rod (4), the right end of the rotating rod (4) is fixedly connected to a rotating plate (5), the left end inner wall of the rotating plate (5) is fixedly connected to a driving component, and the right end of the rotating plate (5) is fixedly connected to a rotating plate (5). Long strip openings (6) are provided on both the front and rear upper and lower sides of the end; the inner walls of the front and rear upper and lower sides of the rotating plate (5) are rotatably connected with threaded rods (8); the opposite side of the threaded rod (8) is fixedly connected with a driven bevel gear (9); the driving component is meshingly connected with the driven bevel gear (9); the external thread of the threaded rod (8) is connected with a slider (10); the top of the slider (10) is fixedly connected with a support rod (11); the top of the support rod (11) is fixedly connected with a clamping block (12). 2. A screw concentricity detection fixture according to claim 1, characterized in that: a fixed plate (13) is fixedly connected to the top right end of the base plate (1), sliding rods (14) are fixedly connected to both sides of the left end of the fixed plate (13), a sliding plate (15) is slidably connected to the outer side of the sliding rod (14), an electric push rod (16) is fixedly connected to the top of the sliding plate (15), and a support plate (17) is fixedly connected to the top of the electric push rod (16). 3. A screw rod concentricity detection fixture according to claim 1, characterized in that the right end of the support rod (11) passes through the right side of the long strip opening (6) and extends outward. 4. A screw concentricity detection fixture according to claim 1, characterized in that: the driving component includes a motor (701), the left end of the motor (701) is fixedly connected to the left inner wall of the rotating plate (5), the driving end of the motor (701) is fixedly connected to a driving bevel gear (702), and the driving bevel gear (702) is meshingly connected with the driven bevel gear (9). 5. A screw concentricity detection fixture according to claim 1, characterized in that: the top rear end of the base plate (1) is fixedly connected to a linear guide rail (18), the top of the linear guide rail (18) is slidably connected to a movable block (19), the top of the movable block (19) is fixedly connected to a movable rod (20), the outer side of the movable rod (20) is slidably connected to a connecting plate (21), and the front end of the connecting plate (21) is fixedly connected to a detection gauge (23). 6. A screw rod concentricity detection fixture according to claim 5, characterized in that: the top of the movable rod (20) is fixedly connected to a limit block (22), and the rear end of the connecting plate (21) is threadedly connected to a bolt (24). 7. A screw rod concentricity detection fixture according to claim 1, characterized in that an outer side of the rotating plate (5) is rotatably connected to the inner wall of the cavity. 8. A screw rod concentricity detection fixture according to claim 2, characterized in that the other end of the sliding rod (14) is fixedly connected to the bottom of the right end of the fixing seat (2).