Mechanical part reaming positioning die and method

Abstract

The invention belongs to the technical field of positioning dies, and particularly relates to a mechanical part reaming positioning die and method. Comprising a workbench 1, a sliding hole 2 is formed in the upper surface of the workbench 1, two supporting plates 3 are arranged on the outer surface of the sliding hole 2, the bottom faces of the two supporting plates 3 are fixedly connected with the upper surface of the workbench 1, a clamping and positioning mechanism 4 is arranged on the side faces, close to each other, of the two supporting plates 3, and the clamping and positioning mechanism 4 comprises two first supporting frames 401; a lifting mechanism 5 is arranged below the two first supporting frames 401 and comprises two second supporting frames 501, four supporting legs 6 are arranged on the outer surfaces of the two second supporting frames 501, and the upper surface of each supporting leg 6 is fixedly connected with the bottom face of the workbench 1. In order to overcome the defects in the prior art, the mechanical part chambering and positioning die is provided.

Description

Technical Field

[0001] The invention belongs to the technical field of positioning molds, and in particular relates to a mechanical parts hole enlarging positioning mold and a method. Background Art

[0002] Mechanical parts, also known as mechanical elements, are the basic elements that constitute machinery. They are inseparable individual parts that make up machinery and machines. In the production and processing of mechanical parts, in order to improve the size and shape accuracy of the holes, reduce surface roughness, and process large-sized holes, a rapid hole expansion positioning mechanism is often used to position and expand the mechanical parts to prevent them from shifting during the hole expansion process and affecting the processing accuracy.

[0003] At present, a high-precision mechanical parts reaming positioning mold is disclosed in the prior art, and its patent number is: CN214184984 U, which includes a base, a positioning block and a limiting mechanism. An L-shaped product positioning groove is provided on the front end face of the positioning block, and the top of the L-shaped product positioning groove is connected to the top face of the positioning block, and the left side face of the product positioning groove is connected to the left side face of the positioning block. The limiting mechanism is installed on the front end face of the positioning block. The reaming positioning mold improves the installation and disassembly efficiency and quality of the product, and has the advantage of high reaming processing efficiency. However, there are still some problems with the reaming positioning mold when it is used. For example, after the mechanical parts are clamped and positioned, the automatic flipping of the mechanical parts cannot be realized. If the mechanical parts need double-sided reaming, the parts need to be removed, and the surfaces need to be manually changed and then re-fixed for reaming, resulting in a decrease in the efficiency of the reaming positioning mold for reaming the mechanical parts. To this end, we provide a mechanical parts reaming positioning mold to solve the above problems. Summary of the invention

[0004] Technical problem solved by the invention: The purpose of the invention is to make up for the deficiencies of the prior art and provide a hole expansion and positioning die for mechanical parts.

[0005] The technical solution of the present invention:

[0006] On the one hand, the present invention provides a mechanical parts expansion and positioning mold, including a workbench 1, a sliding hole 2 is opened on the upper surface of the workbench 1, and two support plates 3 are arranged on the outer surface of the sliding hole 2, and the bottom surfaces of the two support plates 3 are fixedly connected to the upper surface of the workbench 1, and a clamping and positioning mechanism 4 is arranged on the side where the two support plates 3 are close to each other, and the clamping and positioning mechanism 4 includes two first support frames 401, and a lifting mechanism 5 is arranged below the two first support frames 401, and the lifting mechanism 5 includes two second support frames 501, and the outer surfaces of the two second support frames 501 are arranged with four support legs 6, and the upper surface of each of the support legs 6 is fixedly connected to the bottom surface of the workbench 1.

[0007] Furthermore, the clamping and positioning mechanism 4 includes two first support frames 401, the left sides of the two first support frames 401 are fixedly connected to the right side of one of the support plates 3, and the first bidirectional motor 402 is installed on the side of the two first support frames 401 close to each other, and the output end of the first bidirectional motor 402 passes through the inner wall of one of the support plates 3 and is fixedly connected to a rotating column 403, and the end of the rotating column 403 away from the first bidirectional motor 402 is rotatably connected to the left side of the other support plate 3, and the output end of the first bidirectional motor 402 is rotatably connected to the inner wall of one of the support plates 3;

[0008] The outer surface of the rotating column 403 is fixedly connected with a first gear 404, the first gear 404 is meshed with a second gear 405, the inner wall of the second gear 405 is fixedly connected with a threaded rod 406, and both ends of the threaded rod 406 are respectively rotatably connected to the side surfaces of the two support plates 3 that are close to each other;

[0009] The outer surface of the threaded rod 406 is threadedly connected to two threaded plates 407, and the inner walls of the two threaded plates 407 are slidably connected to fixed columns 408, and the two ends of the fixed columns 408 are respectively fixedly connected to the side surfaces of the two support plates 3 that are close to each other;

[0010] The outer surface of the threaded rod 406 is provided with threads in opposite directions, and when the threaded rod 406 rotates, the two threaded plates 407 connected by the threads on the outer surface can move toward one side closer to or farther away from each other;

[0011] One end of the two threaded plates 407 away from the threaded rod 406 is fixedly connected to a fixed plate 409, and the side surfaces of the two fixed plates 409 close to each other are rotatably connected to a rotating rod 410, and the right sides of the two rotating rods 410 are provided with two third support frames 411, and the left sides of the two third support frames 411 are fixedly connected to the right side of one of the fixed plates 409, and the side surfaces of the two third support frames 411 close to each other are installed with a second bidirectional motor 412, the output end of the second bidirectional motor 412 passes through the inner wall of one of the fixed plates 409 and is fixedly connected to the right end of one of the rotating rods 410, and the output end of the second bidirectional motor 412 is rotatably connected to the inner wall of one of the fixed plates 409;

[0012] The ends of the two rotating rods 410 away from the fixed plate 409 are fixedly connected to the clamping plates 413, and the sides of the two clamping plates 413 close to each other are fixedly connected to the buffer plates 414;

[0013] A groove is provided on one side of the two buffer plates 414 close to each other;

[0014] A lifting mechanism 5 is disposed below the two first support frames 401 of the clamping and positioning mechanism 4 .

[0015] Furthermore, the second bidirectional motor 412 rotates to drive one of the rotating rods 410 to rotate, and one of the rotating rods 410 will drive one of the clamping plates 413 and the buffer plate 414 to rotate, and one of the clamping plates 413 and the buffer plate 414 clamps the parts together with the other clamping plate 413 and the buffer plate 414. When one of the clamping plates 413 and the buffer plate 414 rotates, it will drive the parts together with the other clamping plate 413 and the buffer plate 414 to rotate, thereby completing the flipping of the parts.

[0016] Furthermore, the lifting mechanism 5 includes two second support frames 501, the upper surfaces of the two second support frames 501 are fixedly connected to the bottom surface of the workbench 1, and a cylinder 502 is installed on the side of the two second support frames 501 close to each other. The output end of the cylinder 502 is fixedly connected to the lifting platform 503, and the outer surface of the lifting platform 503 is slidably connected to the inner wall of the sliding hole 2.

[0017] Furthermore, the size of the lifting platform 503 is adapted to the size of the inner wall of the sliding hole 2, so that the lifting platform 503 can slide on the inner wall of the sliding hole 2, so that the lifting platform 503 can better support the components.

[0018] Furthermore, four legs 6 are provided on the outer surfaces of the two second support frames 501 , and the upper surface of each leg 6 is fixedly connected to the bottom surface of the workbench 1 .

[0019] On the other hand, the present invention provides a method for positioning a hole expansion of a mechanical component, the method being implemented by using the mold, the method comprising:

[0020] First, the parts to be expanded and positioned are placed on the upper surface of the cylinder 502, and the first bidirectional motor 402 is turned on, so that the first bidirectional motor 402 works to drive the rotating column 403 to rotate. When the rotating column 403 rotates, it will drive the first gear 404 fixedly connected to the outer surface to rotate, and the first gear 404 is meshed with the second gear 405. The second gear 405 rotates under the drive of the first gear 404. When the second gear 405 rotates, it drives the threaded rod 406 fixedly connected to the inner wall to rotate. The outer surface of the threaded rod 406 is provided with threads in opposite directions. When the threaded rod 406 rotates, The two threaded plates 407 connected by threads on the outer surfaces move toward a side that is closer to or farther away from each other. When the two threaded plates 407 move toward a side that is closer to each other, they can drive the two fixed plates 409 to move toward a side that is closer to each other. The two fixed plates 409 drive the two clamping plates 413 to move toward a side that is closer to each other through two rotating rods 410. The two clamping plates 413 will drive the two buffer plates 414 to clamp and position the parts. After the clamping plates 413 clamp and position the mechanical parts through the buffer plates 414, the parts are expanded using an expansion machine.

[0021] Furthermore, the method further comprises:

[0022] When the hole expansion of the component on one side is completed and the hole expansion of the other side is required, the cylinder 502 is opened, and the output end of the cylinder 502 drives the lifting platform 503 to slide downward on the inner wall of the sliding hole 2. After the lifting platform 503 slides down a distance, the cylinder 502 is closed, and the second bidirectional motor 412 is turned on. The second bidirectional motor 412 rotates and drives one of the rotating rods 410 to rotate. One of the rotating rods 410 will drive one of the clamping plates 413 and the buffer plate 414 to rotate. One of the clamping plates 413 and the buffer plate 414 and the other clamping plates 413 and the buffer plate 414 clamp the component. When one of the clamping plates 413 and the buffer plate 414 rotates, it will drive the component and the other clamping plate 413 and the buffer plate 414 to rotate, thereby completing the turning over of the component, and then the hole expansion machine is used to expand the hole on the other side of the mechanical component.

[0023] Compared with the prior art, the mechanical parts hole expansion positioning die has the following beneficial effects:

[0024] 1. The present invention can realize rapid flipping of mechanical parts through the coordinated arrangement of the workbench, the sliding hole, the support plate, the clamping positioning mechanism, and the lifting mechanism, thereby reducing the work process caused by manual labor, thereby improving the efficiency of the hole expansion positioning mold in expanding and positioning the mechanical parts.

[0025] 2. The present invention coordinates the working table, sliding hole, supporting plate, threaded plate, fixing plate, rotating rod, clamping plate, buffer plate, cylinder and lifting platform to enable the clamping plate and buffer plate to clamp the parts more stably, and the hole expansion positioning device is easy to operate, which greatly improves the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional front view structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of a three-dimensional side view structure of the present invention;

[0028] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the present invention;

[0029] Figure 4 It is a schematic diagram of the three-dimensional front view structure of the clamping and positioning mechanism of the present invention.

[0030] In the figure: 1. workbench; 2. sliding hole; 3. support plate; 4. clamping and positioning mechanism; 401. first support frame; 402. first bidirectional motor; 403. rotating column; 404. first gear; 405. second gear; 406. threaded rod; 407. threaded plate; 408. fixed column; 409. fixed plate; 410. rotating rod; 411. third support frame; 412. second bidirectional motor; 413. clamping plate; 414. buffer plate; 5. lifting mechanism; 501. second support frame; 502. cylinder; 503. lifting platform; 6. support leg. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] The present invention provides the following technical solution: a mechanical parts expansion and positioning mold, comprising a workbench, a sliding hole is opened on the upper surface of the workbench, and two support plates are arranged on the outer surface of the sliding hole, and the bottom surfaces of the two support plates are fixedly connected to the upper surface of the workbench, and a clamping and positioning mechanism is arranged on one side of the two support plates close to each other, and the clamping and positioning mechanism comprises two first support frames, and a lifting mechanism is arranged below the two first support frames, and the lifting mechanism comprises two second support frames, and four legs are arranged on the outer surface of the two second support frames, and the upper surface of each leg is fixedly connected to the bottom surface of the workbench.

[0033] Preferably, the left sides of the two first support frames are fixedly connected to the right side side of one of the support plates, and a first bidirectional motor is installed on a side of the two first support frames close to each other, and the output end of the first bidirectional motor passes through the inner wall of one of the support plates and is fixedly connected to a rotating column, and the end of the rotating column away from the first bidirectional motor is rotatably connected to the left side of the other support plate, and the output end of the first bidirectional motor is rotatably connected to the inner wall of one of the support plates.

[0034] Preferably, a first gear is fixedly connected to the outer surface of the rotating column, the first gear is meshed with a second gear, a threaded rod is fixedly connected to the inner wall of the second gear, and both ends of the threaded rod are rotatably connected to the side surfaces of the two support plates that are close to each other.

[0035] Preferably, the outer surface of the threaded rod is threadedly connected to two threaded plates, the inner walls of the two threaded plates are slidably connected to fixing columns, and the two ends of the fixing columns are respectively fixedly connected to the side surfaces of the two support plates close to each other.

[0036] Preferably, the ends of the two threaded plates away from the threaded rod are fixedly connected to a fixing plate, the side surfaces of the two fixing plates close to each other are rotatably connected to a rotating rod, the right sides of the two rotating rods are provided with two third support frames, the left sides of the two third support frames are fixedly connected to the right side of one of the fixing plates, and a second bidirectional motor is installed on the side surfaces of the two third support frames close to each other, the output end of the second bidirectional motor passes through the inner wall of one of the fixing plates and is fixedly connected to the right end of one of the rotating rods, and the output end of the second bidirectional motor is rotatably connected to the inner wall of one of the fixing plates.

[0037] Preferably, one end of the two rotating rods away from the fixed plate is fixedly connected to a clamping plate, and one side of the two clamping plates close to each other is fixedly connected to a buffer plate.

[0038] Preferably, the upper surfaces of the two second support frames are fixedly connected to the bottom surface of the workbench, and a cylinder is installed on the side of the two second support frames close to each other, and the output end of the cylinder is fixedly connected to a lifting platform, and the outer surface of the lifting platform is slidably connected to the inner wall of the sliding hole.

[0039] See also Figure 1 to Figure 4 A mechanical parts expansion and positioning mold includes a workbench 1, a slide hole 2 is opened on the upper surface of the workbench 1, and two support plates 3 are arranged on the outer surface of the slide hole 2. The bottom surfaces of the two support plates 3 are fixedly connected to the upper surface of the workbench 1.

[0040] The workbench 1 is made of a material with strong hardness and a smooth outer surface, so that the workbench 1 can support the device while wiping the outer surface of the workbench 1 to ensure that the outer surface of the workbench 1 is clean and tidy, thereby ensuring a sanitary environment during the processing of mechanical parts.

[0041] A clamping and positioning mechanism 4 is provided on the side where the two support plates 3 are close to each other, and the clamping and positioning mechanism 4 includes two first support frames 401, and the left sides of the two first support frames 401 are fixedly connected to the right side of one of the support plates 3, and a first bidirectional motor 402 is installed on the side where the two first support frames 401 are close to each other, and the output end of the first bidirectional motor 402 passes through the inner wall of one of the support plates 3 and is fixedly connected to a rotating column 403, and the end of the rotating column 403 away from the first bidirectional motor 402 is rotatably connected to the left side of the other support plate 3, and the output end of the first bidirectional motor 402 is rotatably connected to the inner wall of one of the support plates 3.

[0042] The rotating column 403 is made of a material with strong hardness and light weight, so that the rotating column 403 can better support the first gear 404 arranged on the outer surface and reduce the gravity on the support plate 3.

[0043] The outer surface of the rotating column 403 is fixedly connected with a first gear 404, the first gear 404 is meshed with a second gear 405, the inner wall of the second gear 405 is fixedly connected with a threaded rod 406, and the two ends of the threaded rod 406 are respectively rotatably connected to the side surfaces of the two support plates 3 that are close to each other.

[0044] The outer surface of the threaded rod 406 is threadedly connected to two threaded plates 407 , and the inner walls of the two threaded plates 407 are slidably connected to fixing columns 408 , and both ends of the fixing columns 408 are fixedly connected to the side surfaces of the two support plates 3 that are close to each other.

[0045] The outer surface of the threaded rod 406 is provided with threads in opposite directions. When the threaded rod 406 rotates, the two threaded plates 407 connected by threads on the outer surfaces can move toward or away from each other.

[0046] The ends of the two threaded plates 407 away from the threaded rod 406 are fixedly connected to the fixed plates 409, and the side surfaces of the two fixed plates 409 close to each other are rotatably connected to the rotating rod 410. The right sides of the two rotating rods 410 are provided with two third support frames 411, and the left sides of the two third support frames 411 are fixedly connected to the right side of one of the fixed plates 409. A second bidirectional motor 412 is installed on the side surfaces of the two third support frames 411 close to each other, and the output end of the second bidirectional motor 412 passes through the inner wall of one of the fixed plates 409 and is fixedly connected to the right end of one of the rotating rods 410, and the output end of the second bidirectional motor 412 is rotatably connected to the inner wall of one of the fixed plates 409.

[0047] The ends of the two rotating rods 410 away from the fixed plate 409 are fixedly connected to the clamping plates 413 , and the side surfaces of the two clamping plates 413 close to each other are fixedly connected to the buffer plates 414 .

[0048] A groove is provided on the side of the two buffer plates 414 that are close to each other, which can increase the friction between the buffer plates 414 and the parts, so that the buffer plates 414 can better clamp the parts through the clamping plates 413.

[0049] Here, the second bidirectional motor 412 rotates to drive one of the rotating rods 410 to rotate, and one of the rotating rods 410 will drive one of the clamping plates 413 and the buffer plate 414 to rotate, and one of the clamping plates 413 and the buffer plate 414 and the other clamping plate 413 and the buffer plate 414 clamp the parts. When one of the clamping plates 413 and the buffer plate 414 rotates, it will drive the parts and the other clamping plate 413 and the buffer plate 414 to rotate, thereby completing the turning over of the parts, reducing the work process caused by manual labor, and thus improving the efficiency of the hole expansion positioning mold in expanding and positioning the mechanical parts.

[0050] The clamping and positioning mechanism 4 includes two first support frames 401, and a lifting mechanism 5 is arranged below the two first support frames 401. The lifting mechanism 5 includes two second support frames 501. The upper surfaces of the two second support frames 501 are fixedly connected to the bottom surface of the workbench 1. A cylinder 502 is installed on the side of the two second support frames 501 close to each other, and the output end of the cylinder 502 is fixedly connected to a lifting platform 503. The outer surface of the lifting platform 503 is slidably connected to the inner wall of the sliding hole 2.

[0051] Here, the two second support frames 501 are made of a material with strong hardness and light weight, so that the second support frames 501 can better support the cylinders 502 installed on one side close to each other, and can also reduce the gravity on the workbench 1.

[0052] Here, the lifting platform 503 is made of a material with strong hardness and light weight, so that the lifting platform 503 can be better lifted and lowered under the drive of the output end of the cylinder 502. The size of the lifting platform 503 is adapted to the size of the inner wall of the sliding hole 2, so that the lifting platform 503 can slide better on the inner wall of the sliding hole 2, so that the lifting platform 503 can better support the parts.

[0053] Four legs 6 are disposed on the outer surfaces of the two second support frames 501 , and the upper surface of each leg 6 is fixedly connected to the bottom surface of the workbench 1 .

[0054] The four legs 6 are made of a material with high hardness, so that the legs 6 can better support the workbench 1 , and the hole expansion positioning mold can better process the parts on the upper surface of the workbench 1 .

[0055] Working principle: When using this device, first place the parts to be expanded and positioned on the upper surface of the cylinder 502, turn on the first bidirectional motor 402, and make the first bidirectional motor 402 work to drive the rotating column 403 to rotate. When the rotating column 403 rotates, it will drive the first gear 404 fixedly connected to the outer surface to rotate. The first gear 404 is meshed with the second gear 405. The second gear 405 rotates under the drive of the first gear 404. When the second gear 405 rotates, it drives the threaded rod 406 fixedly connected to the inner wall to rotate. The outer surface of the threaded rod 406 is provided with threads in opposite directions. When the threaded rod 406 rotates, the two threaded plates 407 connected by the outer surface threads can move toward a side that is close to or away from each other. When the two threaded plates 407 move toward a side that is close to each other, the two fixed plates 409 can be driven to move toward a side that is close to each other. The two fixed plates 409 drive the two clamping plates 413 to move toward a side that is close to each other through the two rotating rods 410. The two clamping plates 413 will drive the two buffer plates 414 to clamp and position the parts. After the clamping plates 413 have clamped and positioned the mechanical parts through the buffer plates 414, the expansion joints can be used to expand the mechanical parts. The hole machine expands the parts. When the expansion of the parts on one side is completed and the other side needs to be expanded, the cylinder 502 is turned on. The output end of the cylinder 502 drives the lifting platform 503 to slide downward on the inner wall of the sliding hole 2. After the lifting platform 503 slides down a certain distance, the cylinder 502 is closed, and the second bidirectional motor 412 is turned on. The second bidirectional motor 412 rotates to drive one of the rotating rods 410 to rotate. One of the rotating rods 410 will drive one of the clamping plates 413 and the buffer plate 414 to rotate. One of the clamping plates 413 and the buffer plate 414 and the other clamping plate 4 13 and the buffer plate 414 are clamping the parts. When one of the clamping plates 413 and the buffer plate 414 rotates, it will drive the parts and the other clamping plate 413 and the buffer plate 414 to rotate, thereby completing the turning of the parts, and then use the reaming machine to reame the other side of the mechanical parts. The mechanical parts are clamped and positioned by the first bidirectional motor 402, the second bidirectional motor 412, and the cylinder 502, which reduces other manual operations, makes the reaming positioning device simple to operate, and improves the practicability of the device and the efficiency of reaming and positioning the mechanical parts.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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

1. A mechanical parts hole expansion positioning die, characterized in that: The invention comprises a workbench (1), wherein a sliding hole (2) is provided on the upper surface of the workbench (1), and two support plates (3) are arranged on the outer surface of the sliding hole (2), and the bottom surfaces of the two support plates (3) are fixedly connected to the upper surface of the workbench (1); a clamping and positioning mechanism (4) is arranged on the side surfaces of the two support plates (3) close to each other, and the clamping and positioning mechanism (4) comprises two first support frames (401), and a lifting mechanism (5) is arranged below the two first support frames (401), and the lifting mechanism (5) comprises two second support frames (501), and four supporting legs (6) are arranged on the outer surface of the two second support frames (501), and the upper surface of each supporting leg (6) is fixedly connected to the bottom surface of the workbench (1).

2. A mechanical parts hole expansion positioning die according to claim 1, characterized in that: The clamping and positioning mechanism (4) comprises two first support frames (401), the left sides of the two first support frames (401) are fixedly connected to the right side of one of the support plates (3), a first bidirectional motor (402) is installed on the side of the two first support frames (401) close to each other, the output end of the first bidirectional motor (402) passes through the inner wall of one of the support plates (3) and is fixedly connected to a rotating column (403), the end of the rotating column (403) away from the first bidirectional motor (402) is rotatably connected to the left side of the other support plate (3), and the output end of the first bidirectional motor (402) is rotatably connected to the inner wall of one of the support plates (3); The outer surface of the rotating column (403) is fixedly connected to a first gear (404), the first gear (404) is meshed with a second gear (405), the inner wall of the second gear (405) is fixedly connected to a threaded rod (406), and both ends of the threaded rod (406) are respectively rotatably connected to the side surfaces of the two support plates (3) that are close to each other; The outer surface of the threaded rod (406) is threadedly connected to two threaded plates (407), the inner walls of the two threaded plates (407) are slidably connected to fixed columns (408), and the two ends of the fixed columns (408) are respectively fixedly connected to the side surfaces of the two support plates (3) that are close to each other; The outer surface of the threaded rod (406) is provided with threads in opposite directions, and when the threaded rod (406) is rotated, two threaded plates (407) connected by threads on the outer surfaces can be moved toward or away from each other; The ends of the two threaded plates (407) away from the threaded rod (406) are fixedly connected to a fixed plate (409), and the side surfaces of the two fixed plates (409) close to each other are rotatably connected to a rotating rod (410). The right sides of the two rotating rods (410) are provided with two third support frames (411), and the left sides of the two third support frames (411) are fixedly connected to the right side of one of the fixed plates (409). A second bidirectional motor (412) is installed on the side surfaces of the two third support frames (411) close to each other, and the output end of the second bidirectional motor (412) passes through the inner wall of one of the fixed plates (409) and is fixedly connected to the right end of one of the rotating rods (410), and the output end of the second bidirectional motor (412) is rotatably connected to the inner wall of one of the fixed plates (409); The ends of the two rotating rods (410) away from the fixed plate (409) are fixedly connected to the clamping plate (413), and the side surfaces of the two clamping plates (413) close to each other are fixedly connected to the buffer plate (414); A groove is provided on one side of the two buffer plates (414) close to each other; A lifting mechanism (5) is provided below the two first support frames (401) of the clamping and positioning mechanism (4).

3. A mechanical parts hole expansion positioning die according to claim 2, characterized in that: The second bidirectional motor (412) rotates to drive one of the rotating rods (410) to rotate, and one of the rotating rods (410) drives one of the clamping plates (413) and the buffer plate (414) to rotate, and one of the clamping plates (413) and the buffer plate (414) and the other clamping plate (413) and the buffer plate (414) clamp the parts, and when one of the clamping plates (413) and the buffer plate (414) rotates, it drives the parts and the other clamping plate (413) and the buffer plate (414) to rotate, thereby completing the turning over of the parts.

4. A mechanical parts hole expansion positioning die according to claim 1, characterized in that: The lifting mechanism (5) comprises two second support frames (501), the upper surfaces of the two second support frames (501) are fixedly connected to the bottom surface of the workbench (1), a cylinder (502) is installed on the side of the two second support frames (501) close to each other, the output end of the cylinder (502) is fixedly connected to the lifting platform (503), and the outer surface of the lifting platform (503) is slidably connected to the inner wall of the sliding hole (2).

5. A mechanical parts hole expansion positioning die according to claim 4, characterized in that: The size of the lifting platform (503) is matched with the size of the inner wall of the sliding hole (2), so that the lifting platform (503) can slide on the inner wall of the sliding hole (2), so that the lifting platform (503) can better support the parts.

6. A mechanical parts hole enlarging and positioning die according to claim 4, characterized in that: Four supporting legs (6) are arranged on the outer surfaces of the two second supporting frames (501), and the upper surface of each supporting leg (6) is fixedly connected to the bottom surface of the workbench (1).

7. A method for positioning a hole expansion of a mechanical component, characterized in that: The method is implemented using a mold as claimed in any one of claims 1 to 6, and the method comprises: First, the component to be expanded and positioned is placed on the upper surface of the cylinder (502), and the first bidirectional motor (402) is turned on, so that the first bidirectional motor (402) works to drive the rotating column (403) to rotate. When the rotating column (403) rotates, it drives the first gear (404) fixedly connected to the outer surface to rotate, and the first gear (404) is meshed with the second gear (405). The second gear (405) rotates under the drive of the first gear (404). When the second gear (405) rotates, it drives the threaded rod (406) fixedly connected to the inner wall to rotate. The outer surface of the threaded rod (406) is provided with threads in opposite directions. The threaded rod (406) rotates. When the two threaded plates (407) connected by the outer surface threads are moved, they can move toward a side that is close to or away from each other. When the two threaded plates (407) move toward a side that is close to each other, they can drive the two fixed plates (409) to move toward a side that is close to each other. The two fixed plates (409) drive the two clamping plates (413) to move toward a side that is close to each other through the two rotating rods (410). The two clamping plates (413) will drive the two buffer plates (414) to clamp and position the parts. After the clamping plates (413) clamp and position the mechanical parts through the buffer plates (414), the parts are expanded by using an expansion machine.

8. A method for positioning a hole expansion of a mechanical component according to claim 7, characterized in that: The method further comprises: When the hole expansion of the component on one side is completed and the hole expansion of the other side is required, the cylinder (502) is turned on, and the output end of the cylinder (502) drives the lifting platform (503) to slide downward on the inner wall of the sliding hole (2). After the lifting platform (503) slides downward a certain distance, the cylinder (502) is closed, and the second bidirectional motor (412) is turned on. The second bidirectional motor (412) rotates to drive one of the rotating rods (410) to rotate, and one of the rotating rods (410) drives one of the clamping plates ( 413) and the buffer plate (414) rotate, one of the clamping plates (413) and the buffer plate (414) and the other clamping plate (413) and the buffer plate (414) clamp the parts, when one of the clamping plates (413) and the buffer plate (414) rotates, the parts and the other clamping plate (413) and the buffer plate (414) are driven to rotate, thereby completing the turning over of the parts, and then the reaming machine is used to reame the other side of the mechanical parts.

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