CN118268418B - Slender shaft precision machining alignment tool - Google Patents

Abstract

The present invention relates to the technical field of precision machining of slender shafts, and specifically refers to a precision machining straightening jig for slender shafts, which comprises a base, on which two symmetrically mounted shaft mounters are provided, between which a number of movable pneumatic tables are provided, rollers are provided at both ends of the base, and a movable electric telescopic table is provided on one side of the base, on which a rotatable pneumatic hammer support table is provided, on which a pneumatic hammer with an adjustable position is provided, and the electric telescopic table comprises a rotatable mounting table body, and the pneumatic hammer support table comprises a first mounting seat located on the mounting table body, on which an axle seat is provided, on which a pneumatic hammer support table is rotatably connected, and an extension support table is provided at one end of the pneumatic hammer support table, and the pneumatic hammer can be moved and positioned on the extension support table. The precision machining straightening jig for slender shafts of the present invention can improve the accuracy of precision machining of slender shafts, and has a high fault tolerance rate, which is beneficial to enterprise production and improves product quality.

Description

A slender shaft precision machining straightening fixture

Technical Field

The invention relates to the technical field of precision machining of slender shafts, and in particular to a precision machining straightening jig for slender shafts.

Background Art

The slender shaft precision machining straightening jig is a device used to improve the machining accuracy of slender shafts. It can effectively solve the problems of low machining accuracy caused by poor rigidity, large thermal deformation, and fast tool wear during the machining of slender shafts. This jig usually includes a workbench, a clamping mechanism, a linear motor, a cylinder and other components. Through precise design, the slender shaft can be stably supported during the machining process, thereby improving the machining accuracy and ensuring the machining quality.

The core function of the slender shaft precision machining straightening jig in the prior art is to provide a stable platform so that the slender shaft can be kept in a precise position during machining, reducing deviations in the machining process, thereby improving machining accuracy. Prior art such as: a precision slender shaft machining straightening jig and a precision slender shaft machining method, publication number: CN103978070A, the slender shaft is measured by a movable micrometer, this method requires error-free movement of the micrometer as the basis to achieve the effect smoothly, in the actual production process the conditions are extremely harsh and difficult to achieve, and the extension bracket cannot vibrate slightly during the movement, otherwise it will greatly affect the quality of the finished product.

Summary of the invention

In order to solve the above problems, the present invention provides a slender shaft precision machining straightening fixture, which can improve the accuracy of slender shaft precision machining and has a high fault tolerance rate, is beneficial to enterprise production, and improves product quality.

In order to solve the above technical problems, the technical solution provided by the present invention is: a slender shaft precision machining straightening fixture, which includes a base, two symmetrically installed shaft mounters are arranged on the base, a plurality of movable pneumatic tables are arranged between the two shaft mounters, rollers are arranged at both ends of the base, a movable electric telescopic table is arranged on one side of the base, a rotatable pneumatic hammer support table is arranged on the electric telescopic table, and a pneumatic hammer with adjustable position is arranged on the pneumatic hammer support table;

The electric telescopic platform includes a rotatable mounting platform body, and the pneumatic hammer support platform includes a first mounting seat located on the mounting platform body, the first mounting seat is provided with an axle seat, and a pneumatic hammer support frame is rotatably connected to the axle seat, and an extension support platform is provided at one end of the pneumatic hammer support frame, and the pneumatic hammer can be moved and positioned on the extension support platform.

As an improvement, a fixed rail frame is provided at the other end of the pneumatic hammer support frame, and a driving motor is provided under the mounting platform. A threaded rod is provided on the driving shaft of the driving motor. The threaded rod passes through the mounting platform and is located in the fixed rail frame. A threaded sleeve is threadedly connected to the threaded rod, and sliders are rotatably connected at both ends of the threaded sleeve. Slide rails for sliding the sliders are provided on both sides of the fixed rail frame.

As an improvement, the electric telescopic platform also includes a first movable base that can be movably positioned on one side of the base, an electric telescopic column is fixedly mounted on the first movable base, first gears driven by a motor are provided on both sides of the telescopic end of the electric telescopic column, the telescopic end of the electric telescopic column is rotatably connected to a first gear shaft meshing with the first gear, and both ends of the first gear shaft are fixedly connected to the bottom end of the mounting platform body.

As an improvement, the base includes an elongated base body, one side of which is provided with a first slide groove for the first movable base to be installed and moved, the center of the elongated base body is provided with a second slide groove for the pneumatic table to be installed and moved, and both ends of the elongated base body are provided with second mounting seats for the roller to be installed.

As an improvement, the shaft mounter includes a U-shaped frame, and circular mounting grooves are provided at the two ends of the U-shaped frame. Driven roller wheels are rotatably connected in the two circular mounting grooves, and empty windows matching the driven roller wheels are provided on both sides of the U-shaped frame.

As an improvement, the pneumatic table includes a second movable base that can be moved and positioned in a second slide groove, the second movable base is provided with a connecting platform, the connecting platform is provided with a pneumatic telescopic seat, the pneumatic telescopic seat is provided with a pneumatic telescopic clamping platform that can be raised and lowered on the pneumatic telescopic seat, the pneumatic telescopic clamping platform is provided with a special-shaped frame, the special-shaped frame is rectangular, the special-shaped frame is provided with an arc-shaped groove, and needle-type sensing micrometers are provided on both sides of the special-shaped frame below the arc-shaped groove.

As an improvement, the needle-type sensor micrometer includes a micrometer housing, a micrometer dial is provided on the micrometer housing, a rebound pointer is provided on the micrometer housing, and the initial position of the rebound pointer is in the vertical direction.

As an improvement, the roller device includes a driving base with a motor installed therein, second gears driven by the motor are provided on both sides of the driving base, the top of the driving base is rotatably connected to a second gear shaft meshing with the second gear, an extension frame is fixedly connected to the second gear shaft, an active roller wheel is rotatably connected between the two ends of the extension frame, and a driving motor connected to the active roller wheel is provided at one end of the extension frame.

After adopting the above structure, the present invention has the following advantages:

By driving the motor, the active roller wheel drives the slender shaft to be straightened to rotate at a uniform speed, and at the same time plays a role of clamping and pressing the slender shaft to be straightened. During the rotation of the slender shaft to be straightened, the two driven roller wheels follow the movement, and cooperate with the pneumatic table to detect the bending part of the slender shaft to be straightened. Compared with the existing technology, the fault tolerance rate is higher;

Empty windows matching the driven roller wheels are provided on both sides of the U-shaped frame. The setting of the empty windows is conducive to the maintenance and polishing of the driven roller wheels, ensuring the roundness of the driven roller wheels, facilitating maintenance, and helping to improve the stability of the device;

The driving motor located at the driving base is controlled to drive the second gear shaft to rotate through the second gear, thereby adjusting the angle of the extension frame, so as to be suitable for slender shafts to be straightened of different specifications. The driving motor is started to drive the slender shaft to be straightened to rotate at a uniform speed through the active roller wheel, and at the same time, the slender shaft to be straightened is clamped and positioned. The structure is simple and easy to maintain.

The threaded rod of the driving motor drives the threaded sleeve to move up and down. During the up and down movement of the threaded sleeve, the fixed rail frame is driven to swing, so that one end of the extended support platform of the pneumatic hammer support platform swings up and down. The pneumatic hammer adjusts its position and positions through the moving device, thereby fine-tuning the hammering angle of the pneumatic hammer to improve the straightening efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a slender shaft precision machining straightening fixture according to the present invention.

FIG. 2 is one of the structural schematic diagrams of a pneumatic hammer and its mounting structure for a slender shaft precision machining straightening jig according to the present invention.

FIG. 3 is a second schematic diagram of the structure of a pneumatic hammer and its mounting structure for a slender shaft precision machining straightening jig according to the present invention.

FIG. 4 is a schematic diagram of the structural decomposition of a pneumatic hammer support platform of a slender shaft precision machining straightening fixture according to the present invention.

FIG. 5 is a schematic diagram of the structural decomposition of an electric telescopic table for a slender shaft precision machining straightening fixture according to the present invention.

FIG. 6 is a schematic structural diagram of a base of a slender shaft precision machining straightening fixture according to the present invention.

FIG. 7 is a schematic structural diagram of a shaft assembler for a slender shaft precision machining straightening jig according to the present invention.

FIG. 8 is a schematic structural diagram of a pneumatic table for a slender shaft precision machining and straightening jig according to the present invention.

FIG. 9 is a schematic structural diagram of a needle-type sensor micrometer of a slender shaft precision machining straightening fixture according to the present invention.

FIG. 10 is a schematic structural diagram of a roller device for a slender shaft precision machining straightening fixture according to the present invention.

FIG. 11 is a schematic diagram of the structure decomposition of a roller device of a slender shaft precision machining straightening fixture according to the present invention.

As shown in the figure: 1. Base; 101. Long strip base body; 102. Second slide groove; 103. First slide groove; 104. Second mounting seat; 2. Shaft loader; 201. U-shaped frame; 203. Empty window; 204. Round mounting groove; 205. Driven roller wheel; 3. Pneumatic table; 301. Second movable base; 302. Connecting table; 303. Pneumatic telescopic seat; 304. Pneumatic telescopic clamping table; 305. Special-shaped frame; 306. Needle sensor micrometer; 3061. Micrometer housing; 3062. Micrometer scale; 3063. Rebound pointer; 307. Arc groove; 4. Roller; 401. Driving base; 402, second gear; 403, second gear shaft; 404, extension frame; 405, active roller wheel; 406, driving motor; 5, electric telescopic table; 501, first movable base; 502, electric telescopic column; 503, first gear; 504, first gear shaft; 505, mounting platform; 6, pneumatic hammer support platform; 601, first mounting seat; 602, shaft seat; 603, pneumatic hammer support frame; 604, driving motor; 605, slide rail; 606, threaded sleeve; 607, fixed rail frame; 608, extension support platform; 609, threaded rod; 610, slider; 7, pneumatic hammer.

DETAILED DESCRIPTION

The present invention is further described in detail below in conjunction with the accompanying drawings.

In conjunction with Figures 1 and 7, a slender shaft precision machining straightening fixture comprises a base 1, on which two symmetrically mounted shaft mounters 2 are provided, the shaft mounters 2 comprising a U-shaped frame 201, two ends of the U-shaped frame 201 are provided with circular mounting grooves 204, two circular mounting grooves 204 are rotatably connected with driven roller wheels 205, and two sides of the U-shaped frame 201 are provided with empty windows 203 that match the driven roller wheels 205;

Through this structure, the two ends of the slender shaft to be straightened are placed between the two driven roller wheels 205. When the slender shaft to be straightened is rotating, the two driven roller wheels 205 follow, which on the one hand play a fixing role, and on the other hand make the slender shaft to be straightened rotate evenly. The setting of the window 203 is conducive to the maintenance and polishing of the driven roller wheel 205 to ensure the roundness of the driven roller wheel 205.

In conjunction with Figures 1, 6, 8 and 9, a plurality of movable pneumatic tables 3 are provided between the two shaft mounters 2, and the pneumatic tables 3 include a second movable base 301 that can be moved and positioned in the second slide groove 102, and a connecting table 302 is provided on the second movable base 301, and a pneumatic telescopic seat 303 is provided on the connecting table 302, and a pneumatic telescopic clamping table 304 that can be raised and lowered on the pneumatic telescopic seat 303 is provided on the pneumatic telescopic clamping table 304, and a special-shaped frame 305 is provided on the pneumatic telescopic clamping table 304, and the special-shaped frame 305 is rectangular, and the special-shaped frame 305 is provided on the pneumatic telescopic clamping table 304. 05 is provided with an arc groove 307, and needle-type sensing micrometers 306 are provided below the arc groove 307 and located on both sides of the special-shaped frame 305. The base 1 includes a long strip base body 101, and a second slide groove 102 is provided at the center of the long strip base body 101 for the pneumatic table 3 to be installed and moved. The needle-type sensing micrometer 306 includes a micrometer housing 3061, and a micrometer dial 3062 is provided on the micrometer housing 3061. A rebound pointer 3063 is provided on the micrometer housing 3061, and the initial position of the rebound pointer 3063 is in the vertical direction;

Through this structure, after the slender shaft to be straightened is properly placed, the slender shaft to be straightened will be squeezed to both sides by the two rebound pointers 3063 located on the same special-shaped frame 305. The rebound pointer 3063 is a prior art, so it is not described in detail here. The rebound pointer 3063 is always close to the slender shaft to be straightened. During the rotation of the slender shaft to be straightened, if bending occurs, the rebound pointer 3063 will be moved to detect the bending position and degree of bending of the slender shaft to be straightened. Several of the second movable bases 301 can be moved and positioned in the second slide groove 102. This is a prior art, so it is not described in detail here. When the bending position of the slender shaft to be straightened is detected, the pneumatic telescopic seat 303 located in this area retracts the pneumatic telescopic clamping platform 304 downward, and the remaining pneumatic telescopic seats 303 lift the pneumatic telescopic clamping platform 304 upward. After the roller 4 rolls the raised surface of the slender shaft to be straightened to the top, the straightening process can be carried out.

In conjunction with Figures 1, 6, 10 and 11, rollers 4 are provided at both ends of the base 1, and the rollers 4 include a driving base 401 with a motor therein, and second gears 402 driven by the motor are provided on both sides of the driving base 401, and a second gear shaft 403 meshing with the second gear 402 is rotatably connected to the top of the driving base 401, and an extension frame 404 is fixedly connected to the second gear shaft 403, and a driving roller wheel 405 is rotatably connected between the two ends of the extension frame 404, and a driving motor 406 connected to the driving roller wheel 405 is provided at one end of the extension frame 404, and second mounting seats 104 for mounting the rollers 4 are provided at both ends of the long strip base body 101;

Through this structure, the driving motor located at the driving base 401 is controlled, and the second gear shaft 403 is driven to rotate through the second gear 402, thereby adjusting the angle of the extension frame 404, so as to be suitable for slender shafts to be straightened of different specifications. The driving motor 406 is started, and the active roller wheel 405 is used to drive the slender shaft to be straightened to rotate at a uniform speed, and at the same time, the slender shaft to be straightened is clamped and positioned.

In conjunction with Figures 1, 2, 3 and 5, a movable electric telescopic platform 5 is provided on one side of the base 1, and the electric telescopic platform 5 also includes a first movable base 501 that can be movably positioned on one side of the base 1, and an electric telescopic column 502 is fixedly installed on the first movable base 501, and first gears 503 driven by a motor are provided on both sides of the telescopic end of the electric telescopic column 502, and the telescopic end of the electric telescopic column 502 is rotatably connected to a first gear shaft 504 meshing with the first gear 503, and both ends of the first gear shaft 504 are fixedly connected to the bottom end of the mounting platform body 505, and a first slide groove 103 for the first movable base 501 to be installed and moved is provided on one side of the elongated base body 101;

Through this structure, the first movable base 501 is moved by a driving device, and the driving device can be a precision threaded rod. This is a prior art, so it is not described in detail here. The first gear 503 is controlled by controlling the driving motor in the electric telescopic column 502, so that the mounting platform 505 is driven to rotate through the first gear shaft 504, thereby adjusting the angle of the mounting platform 505. The electric telescopic column 502 can adjust the height. This is a prior art, so it is not described in detail here.

In conjunction with Figures 1, 2, 3 and 4, a rotatable pneumatic hammer support platform 6 is provided on the electric telescopic platform 5, and a pneumatic hammer 7 with an adjustable position is provided on the pneumatic hammer support platform 6. The electric telescopic platform 5 includes a rotatable mounting platform body 505, and the pneumatic hammer support platform 6 includes a first mounting seat 601 located on the mounting platform body 505, and an axle seat 602 is provided on the first mounting seat 601, and a pneumatic hammer support frame 603 is rotatably connected to the axle seat 602, and an elongated support platform 608 is provided at one end of the pneumatic hammer support frame 603, and the pneumatic hammer 7 can be moved and positioned on the elongated support platform 608;

A fixed rail frame 607 is provided at the other end of the pneumatic hammer support frame 603, a driving motor 604 is provided below the mounting platform 505, a threaded rod 609 is provided on the driving shaft of the driving motor 604, the threaded rod 609 passes through the mounting platform 505 and is located in the fixed rail frame 607, a threaded sleeve 606 is threadedly connected to the threaded rod 609, and sliders 610 are rotatably connected at both ends of the threaded sleeve 606, and slide rails 605 for the slider 610 to slide are provided on both sides of the fixed rail frame 607;

Through this mechanism, the driving motor 604 is started, and the threaded rod 609 of the driving motor 604 drives the threaded sleeve 606 to move up and down. During the up and down movement of the threaded sleeve 606, the fixed rail frame 607 is driven to swing, so that one end of the extended support platform 608 of the pneumatic hammer support frame 603 swings up and down, thereby adjusting the hammering angle of the pneumatic hammer 7. The pneumatic hammer 7 is adjusted and positioned by the moving device. The moving device is a prior art, so it is not described here.

In the specific implementation of the present invention, the two ends of the slender shaft to be straightened are placed between the two driven roller wheels 205, and the driving motor located at the driving base 401 is controlled to drive the second gear shaft 403 to rotate through the second gear 402, thereby adjusting the angle of the extension frame 404, so as to be suitable for slender shafts to be straightened of different specifications, and the driving motor 406 is started to drive the slender shaft to be straightened to rotate at a uniform speed through the active roller wheel 405, and at the same time, the slender shaft to be straightened is clamped and positioned, and the two driven roller wheels 205 follow the rotation of the slender shaft to be straightened;

If bending occurs, the rebound pointer 3063 will be moved to detect the bending part of the slender shaft to be straightened and the degree of bending. The second movable bases 301 can be moved and positioned in the second slide groove 102. This is a prior art and is not described here. When the bending part of the slender shaft to be straightened is detected, the pneumatic telescopic seat 303 located in this area retracts the pneumatic telescopic clamping table 304 downward, and the remaining pneumatic telescopic seats 303 push the pneumatic telescopic clamping table 304 upward. After the roller 4 rolls the convex surface of the slender shaft to be straightened to the top, the straightening process can be carried out.

The first movable base 501 is moved by the driving device, and the first gear 503 is controlled by controlling the driving motor in the electric telescopic column 502, so that the mounting platform 505 is driven to rotate through the first gear shaft 504, so as to adjust the angle of the mounting platform 505. The electric telescopic column 502 can adjust the height, and the driving motor 604 is started. The threaded rod 609 of the driving motor 604 drives the threaded sleeve 606 to move up and down. During the up and down movement of the threaded sleeve 606, the fixed rail frame 607 is driven to swing, so that one end of the extension support platform 608 of the pneumatic hammer support frame 603 swings up and down. At the same time, the pneumatic hammer 7 is adjusted to fine-tune the hammering angle of the pneumatic hammer 7, thereby improving the straightening efficiency.

The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In general, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can creatively design a structure and implementation method similar to the technical solution, which should fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides an slender axles precision finishing alignment tool, it includes base (1), is equipped with two symmetrical installation's dress axle ware (2), its characterized in that on base (1): a plurality of movable pneumatic tables (3) are arranged between the two shaft installing devices (2), roller devices (4) are arranged at two ends of the base (1), a movable electric telescopic table (5) is arranged on one side of the base (1), a rotatable pneumatic hammer supporting table (6) is arranged on the electric telescopic table (5), and a pneumatic hammer (7) with an adjustable position is arranged on the pneumatic hammer supporting table (6);

The electric telescopic table (5) comprises a rotatable mounting table body (505), the pneumatic hammer supporting table (6) comprises a first mounting seat (601) positioned on the mounting table body (505), a shaft seat (602) is arranged on the first mounting seat (601), a pneumatic hammer supporting frame (603) is rotatably connected to the shaft seat (602), an extension supporting table (608) is arranged at one end of the pneumatic hammer supporting frame (603), and the pneumatic hammer (7) can be movably positioned on the extension supporting table (608);

The other end of the pneumatic hammer supporting frame (603) is provided with a fixed rail frame (607), a driving motor (604) is arranged below the installation table body (505), a threaded rod (609) is arranged on a driving shaft of the driving motor (604), the threaded rod (609) penetrates through the installation table body (505) and is positioned in the fixed rail frame (607), a threaded sleeve (606) is connected to the threaded rod (609) in a threaded manner, two ends of the threaded sleeve (606) are rotatably connected with sliding blocks (610), and sliding rails (605) for the sliding blocks (610) to slide are arranged on two sides of the fixed rail frame (607);

The pneumatic table (3) comprises a special-shaped frame body (305), the special-shaped frame body (305) is rectangular, an arc-shaped groove (307) is formed in the special-shaped frame body (305), needle-type sensing micrometer (306) located on two sides of the special-shaped frame body (305) are arranged below the arc-shaped groove (307), and the needle-type sensing micrometer (306) located on two sides of the same special-shaped frame body (305) can measure the left side and the right side of a workpiece to be straightened.

2. The slender shaft precision machining and straightening jig according to claim 1, further comprising: the electric telescopic table (5) further comprises a first movable base (501) which is movably positioned on one side of the base (1), an electric telescopic column (502) is fixedly installed on the first movable base (501), motor-driven first gears (503) are arranged on two sides of the telescopic end of the electric telescopic column (502), a first gear shaft (504) meshed with the first gears (503) is rotatably connected to the telescopic end of the electric telescopic column (502), and two ends of the first gear shaft (504) are fixedly connected with the bottom end of the installation table body (505).

3. The slender shaft precision machining and straightening jig according to claim 2, characterized in that: the base (1) comprises a strip-shaped base body (101), a first chute (103) which can be used for installing and moving the first movable base (501) is arranged on one side of the strip-shaped base body (101), a second chute (102) which can be used for installing and moving the movable table (3) is arranged in the center of the strip-shaped base body (101), and second installation seats (104) which can be used for installing the roller device (4) are arranged at two ends of the strip-shaped base body (101).

4. The slender shaft precision machining and straightening jig according to claim 1, further comprising: the axle loader (2) comprises a U-shaped frame body (201), two end parts of the U-shaped frame body (201) are provided with circular mounting grooves (204), driven roller wheels (205) are rotatably connected in the two circular mounting grooves (204), and hollow windows (203) matched with the driven roller wheels (205) are arranged on two sides of the U-shaped frame body (201).

5. The slender shaft precision machining alignment jig according to claim 3, wherein: the pneumatic table (3) further comprises a second movable base (301) which can be moved and positioned in the second sliding groove (102), a connecting table (302) is arranged on the second movable base (301), a pneumatic telescopic seat (303) is arranged on the connecting table (302), a pneumatic telescopic clamping table (304) which can be lifted on the pneumatic telescopic seat (303) is arranged on the pneumatic telescopic seat (303), and the top end of the pneumatic telescopic clamping table (304) is fixedly connected with the special-shaped frame body (305).

6. The slender shaft precision machining and straightening jig according to claim 5, further comprising: the needle-type sensing micrometer (306) comprises a micrometer shell (3061), a micrometer scale (3062) is arranged on the micrometer shell (3061), a rebound pointer (3063) is arranged on the micrometer shell (3061), and the initial position of the rebound pointer (3063) is in the vertical direction.

7. The slender shaft precision machining and straightening jig according to claim 1, further comprising: the roller device (4) comprises a driving base (401) internally provided with a motor, second gears (402) driven by the motor are arranged on two sides of the driving base (401), a second gear shaft (403) meshed with the second gears (402) is rotatably connected to the top end of the driving base (401), an extension frame body (404) is fixedly connected to the second gear shaft (403), a driving roller wheel (405) is rotatably connected between two end parts of the extension frame body (404), and a driving motor (406) connected with the driving roller wheel (405) is arranged at one end of the extension frame body (404).