Multi-station synchronous machining tool based on screw post positioning

Abstract

This invention relates to the field of multi-station machining technology, and more particularly to a multi-station synchronous machining fixture based on screw post positioning. The fixture includes a slide, a fixing mechanism above the slide, a buffer assembly on one side of the fixing mechanism, and an adjustment mechanism on one side of the slide. This multi-station synchronous machining fixture based on screw post positioning, through the coordinated arrangement of a support plate, a scale, a slide groove, a threaded rod, a measuring rod, a force-bearing button, and a limiting rod, can perform top-mounted clamping positioning of screw post-type workpieces. The height of the support plate is read by the measuring rod, and the sliding distance is read by the scale and the limiting rod. The coordinated arrangement of the support rod, the guide rod, and the pressure plate provides elastic buffering clamping to the circumference of the workpiece. The coordinated arrangement of the guide rail, the slider, the bidirectional threaded screw, the disc gear, the transmission gear, and the force-bearing rod enables multiple sets of slides to move synchronously closer or further apart, achieving multi-station synchronous adjustment and synchronous machining.

Description

Technical Field

[0001] This invention relates to the field of multi-station machining technology, and in particular to a multi-station synchronous machining fixture based on screw post positioning. Background Technology

[0002] Screw studs are widely used in electronic device housings, precision structural parts, plastic inserts, hardware connectors, and assembly connection structures. They typically require drilling, tapping, end face finishing, positioning and pressing, or circumferential machining. Because screw studs are often cylindrical or have bosses, machining them demands high levels of positioning coaxiality, clamping stability, and consistency across multiple workstations. To improve machining efficiency, multi-station fixtures are often used to simultaneously clamp multiple screw studs, enabling them to be simultaneously positioned and machined under the same machining datum. However, existing multi-station synchronous machining fixtures based on screw stud positioning... In practice, single-station fixtures or multiple independent fixtures are often used for locking. While this achieves basic positioning, each station requires individual adjustment, which can easily lead to inconsistencies in clamping height, clamping force, and machining datum between different stations, affecting the accuracy of batch processing. At the same time, traditional rigid clamping structures can easily cause damage to the outer wall or end of the screw post. Workpiece displacement may also occur when subjected to processing force or vibration. For scenarios involving the synchronous processing of multiple sets of screw posts, existing tooling still suffers from asynchronous adjustment, inconvenient chip removal, low positioning efficiency, and insufficient multi-station linkage. Therefore, a multi-station synchronous processing tooling based on screw post positioning is needed.

[0003] To address the aforementioned issues, a search revealed a patent with publication number CN103302546A, which discloses a multi-station automated rotary tooling system. The system includes a power mechanism, a rotary disk, a lower cam, an upper cam, and hydraulic cylinders. The rotary disk has four corresponding workstations for product assembly, product placement, product deep processing, and product removal. Four product fixtures and processing trays are provided at each of these four workstations. The power mechanism and the upper and lower cam structures work together to drive the four workstations, achieving rapid feeding, positioning, fixing, locking, processing, and part removal. This multi-station automated rotary tooling system is installed on the worktable of a CNC machining center and, when combined with a feeding and removing robot, can achieve fully automated, unmanned operation. "Automated production has the advantages of fast clamping speed, accurate positioning and uninterrupted production, and extremely high production efficiency." Although this solution can realize multi-station automated processing, it mainly uses a rotary disk and cam drive to complete the station switching. It is suitable for rotary continuous processing scenarios, but it does not set up positioning sleeves, bearing plate clamping and circumferential elastic buffer positioning structures for screw column workpieces. It is difficult to form a uniform and flexible clamping on the outer circumference of the screw column. At the same time, this solution cannot realize the synchronous approach or departure of multiple sets of slides through bidirectional threaded screws, disc gears and transmission gears. It cannot perform linear synchronous adjustment according to the screw column processing spacing, nor does it set up scales or scale rods to assist in the unified adjustment of multi-station height. Furthermore, it lacks scrapers and chip removal grooves to synchronously clean up processing debris.

[0004] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-station synchronous machining fixture based on screw post positioning, to solve the problems mentioned in the background art. Existing multi-station synchronous machining fixtures based on screw post positioning often use single-station clamps or multiple independent clamps for locking. While this achieves basic positioning, each station requires individual adjustment, which can easily lead to inconsistencies in clamping height, clamping force, and machining datum between different stations, affecting batch processing accuracy. Furthermore, traditional rigid clamping structures can easily damage the outer wall or end of the screw post, and workpiece displacement may occur under processing stress or vibration. For scenarios involving the synchronous machining of multiple screw posts, existing fixtures also suffer from problems such as asynchronous adjustment, inconvenient chip removal, low positioning efficiency, and insufficient multi-station linkage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-station synchronous machining fixture based on screw post positioning, including a slide block. A fixing mechanism is provided above the slide block, a buffer component is provided on one side of the fixing mechanism, and an adjustment mechanism is provided on one side of the slide block. The fixing mechanism includes a bearing plate, a threaded rod is threaded through one side of the bearing plate, a force-bearing button is threaded through the outer side of the threaded rod, and a limit rod is welded above the slide.

[0007] Preferably, a processing seat is connected above the slide, a positioning sleeve is provided on the inner side of the processing seat, scrapers are connected to both sides of the slide, a chip removal groove is provided above the slide, and bases are welded to both sides of the slide.

[0008] Preferably, a threaded rod is connected to the top of the base, and a measuring rod is also connected to the top of the base.

[0009] Preferably, a groove is provided through the top of the bearing plate, and the limiting rod slides inside the groove.

[0010] Preferably, a scale mark is provided above the bearing plate, the scale mark is provided on both sides of the slide groove, two sets of limiting rods are symmetrically provided above the slide block, and a force-bearing button is rotatably sleeved above the bearing plate.

[0011] Preferably, the buffer assembly includes a support rod, and six sets of guide cylinders are connected in a circular, equally spaced manner on the inner side of the support rod. A pressure rod is slidably connected to the inner side of the guide cylinder, and a pressure plate is connected to one end of the pressure rod.

[0012] Preferably, a spring is connected to the inner side of the guide cylinder, and a pressure plate is connected to one end of the spring.

[0013] Preferably, a light rod is connected to the inner side of the guide cylinder, and a pressure plate is sleeved on the outer side of the light rod.

[0014] Preferably, the adjusting mechanism includes a guide rail, a slide block slidably connected above the guide rail, a slider connected to one side of the slide block, a bidirectional threaded screw threaded through one side of the slider, a disc gear connected to one end of the bidirectional threaded screw, a disc gear meshing with one side of the disc gear, a force-bearing rod connected to one end of the disc gear, and a protective box sleeved on the outside of the force-bearing rod.

[0015] Preferably, a guide rail is installed above the base, the slide block connecting scraper slides on the guide rail, a fixing plate is welded to one side of the base, a bidirectional threaded screw is rotatably connected to one side of the fixing plate, the slide block is provided with four sets, and each two sets are connected to the two ends of a bidirectional threaded screw, and the disc gear is meshed with the transmission gear on both sides.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This multi-station synchronous machining fixture based on screw post positioning employs a circumferential buffer assembly consisting of a bearing rod, guide cylinder, pressure rod, spring, smooth rod, and pressure plate. This assembly provides flexible buffer support for screw post-type workpieces during positioning and clamping, reducing workpiece damage and improving clamping reliability. Six sets of guide cylinders are evenly spaced in a circular pattern on the inner side of the bearing rod, allowing multiple pressure rods and pressure plates to make distributed contact around the outer circumference of the screw post, thus forming a uniform auxiliary clamping force on the workpiece's circumference. The spring provides elastic pressure to the pressure plate, enabling it to make some clearance when contacting the workpiece, avoiding scratches, indentations, or deformation caused by direct pressure on the workpiece's outer wall in traditional rigid clamping. The smooth rod guides the extension and retraction direction of the pressure plate or pressure rod, ensuring smooth movement of each pressure plate under force, preventing jamming or skewing. Through this buffer assembly in conjunction with the upper fixing mechanism, a composite positioning method of "center positioning, upper clamping, and circumferential buffering" can be achieved.

[0017] 2. This multi-station synchronous machining fixture based on screw stud positioning integrates an adjustment mechanism consisting of a guide rail, a bidirectional threaded screw, a disc gear, a transmission gear, a force-bearing rod, and a protective box. It enables synchronous adjustment of multiple sets of slides, improving coordination and efficiency during multi-station machining. Four sets of slides are provided, with each pair connected to both ends of a bidirectional threaded screw. When the bidirectional threaded screw rotates, the slides at both ends of the same screw can move closer or further apart synchronously, thus achieving rapid adjustment of the distance between adjacent workstations. The disc gear at the end of the bidirectional threaded screw meshes with the transmission gear. The operator uses the force-bearing rod... When the drive gear rotates, it can synchronously drive the disc gears on both sides and the corresponding bidirectional threaded screw to rotate, enabling multiple sets of slides to achieve linkage adjustment. During the movement of the slide, the movement value can be read through the corresponding scale mark of the limit rod, which makes it easy to keep the adjustment position of multiple workstations consistent. The protective box is set on the outside of the force rod, which can shield and protect the area of ​​the drive gear and disc gear, reducing the entry of machining chips into the transmission area. Scrapers are set on both sides of the slide. When the slide moves on the guide rail, the scrapers can clean the chips on the guide rail surface. Together with the chip discharge groove, the cutting chips, dust or impurities are discharged, improving the smoothness of tooling operation and the convenience of maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the single-station slide and machining base structure of the present invention; Figure 3 This is a schematic diagram of the fixing mechanism structure of the present invention; Figure 4 This is a schematic diagram of the structure of the force-bearing button connection bearing plate of the present invention; Figure 5 This is a schematic diagram of the buffer component structure of the present invention; Figure 6This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 8 For the present invention Figure 6 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Slide; 2. Fixing mechanism; 201. Bearing plate; 202. Dimension mark; 203. Slide groove; 204. Threaded rod; 205. Dimension rod; 206. Force button; 207. Limiting rod; 3. Buffer assembly; 301. Bearing rod; 302. Guide cylinder; 303. Pressure rod; 304. Spring; 305. Smooth rod; 306. Pressure plate; 4. Adjusting mechanism; 401. Guide rail; 402. Slider; 403. Fixing plate; 404. Bidirectional threaded screw; 405. Disc gear; 406. Transmission gear; 407. Force rod; 408. Protective box; 5. Machining seat; 6. Positioning sleeve; 7. Scraper; 8. Chip removal groove; 9. Base. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-8 This invention provides a technical solution: a multi-station synchronous machining fixture based on screw post positioning, including a slide 1. A fixing mechanism 2 is provided above the slide 1, a buffer component 3 is provided on one side of the fixing mechanism 2, and an adjustment mechanism 4 is provided on one side of the slide 1. The fixing mechanism 2 includes a bearing plate 201. A threaded rod 204 is threaded through one side of the bearing plate 201. A force-bearing button 206 is threaded through the outer side of the threaded rod 204. A limit rod 207 is welded above the slide block 1. By setting the fixing mechanism 2, the screw column workpiece located in the positioning sleeve 6 can be pressed from above, so that the workpiece is not easy to move upward or shift during the processing, thus improving the stability of the processing positioning.

[0022] Furthermore, a machining seat 5 is connected above the slide 1, and a positioning sleeve 6 is provided on the inner side of the machining seat 5. Scrapers 7 are connected to both sides of the slide 1, and a chip removal groove 8 is provided above the slide 1. Bases 9 are welded to both sides of the slide 1. Through the arrangement of the slide 1, machining seat 5, and positioning sleeve 6, screw-type workpieces can be supported and centered. Through the arrangement of scraper 7 and chip removal groove 8, chips can be cleaned and guided during the movement and processing of the slide 1, improving the smoothness of tooling operation. Through the cooperation of machining seat 5 and positioning sleeve 6, screw-type workpieces can be placed in a unified positioning position, which is convenient for forming a consistent processing benchmark in multiple stations. Through the arrangement of scraper 7, the machining chips around the guide rail 401 or the slide 1 can be scraped simultaneously when the slide 1 moves along the guide rail 401. Through the arrangement of chip removal groove 8, the chips, powder, or impurities generated during processing can be concentrated and discharged, reducing the impact of chip accumulation on sliding accuracy.

[0023] Furthermore, a threaded rod 204 is connected to the top of the base 9, and a measuring rod 205 is also connected to the top of the base 9. The support provided by the base 9 for the threaded rod 204 and the measuring rod 205 enables the threaded rod 204 to stably drive the bearing plate 201 to adjust its height. The measuring rod 205 is used to read the height value of the bearing plate 201 when it is adjusted up and down, so as to keep the bearing plates 201 at different workstations at the same pressing height and improve the pressing consistency of multiple workstations.

[0024] Furthermore, a groove 203 is provided through the top of the support plate 201, and the limiting rod 207 slides inside the groove 203. Through the cooperation between the groove 203 and the limiting rod 207, the support plate 201 can be limited and guided when it moves under the drive of the threaded rod 204, so as to prevent the support plate 201 from rotating, shaking or deviating, and to ensure that the downward pressing direction of the support plate 201 is consistent with the axis of the workpiece. At the same time, the limiting rod 207 can also correspond to the scale 202 when the slide 1 moves, so as to read the value of the moving distance of the slide 1.

[0025] Furthermore, a scale mark 202 is provided above the support plate 201, and the scale mark 202 is provided on both sides of the slide groove 203. Two sets of limit rods 207 are symmetrically arranged above the slide block 1. A force button 206 is rotatably sleeved above the support plate 201. The scale mark 202 provides a distance reference mark when the slide block 1 moves on the guide rail 401. The limit rod 207 corresponds to the scale mark 202 and can be used to read the moving distance value of the slide block 1, which makes it easier for the operator to judge the adjustment position between each station. By synchronously rotating the force buttons 206 on both sides, the support plate 201 can be driven to adjust up and down along the threaded rod 204, and the height value can be read through the scale rod 205, so that the pressing height of multiple stations is more uniform.

[0026] Furthermore, the buffer assembly 3 includes a support rod 301, with six sets of guide cylinders 302 connected in a circular and equally spaced manner on the inner side of the support rod 301. A pressure rod 303 is slidably connected to the inner side of the guide cylinder 302, and a pressure plate 306 is connected to one end of the pressure rod 303. Through the circumferential arrangement of the support rod 301 and the six sets of guide cylinders 302, multiple pressure plates 306 can be distributed to press around the outer periphery of the workpiece, avoiding uneven force on the workpiece caused by single-point pressing and improving the concentric positioning effect of screw-type workpieces.

[0027] Furthermore, a spring 304 is connected to the inner side of the guide cylinder 302, and a pressure plate 306 is connected to one end of the spring 304. Through the setting of the spring 304, the pressure plate 306 can form an elastic buffer when it contacts the workpiece, which can not only apply a stable clamping force to the workpiece, but also automatically give way when there is a small error in the size of the workpiece, so as to avoid damage to the outer wall of the workpiece caused by rigid extrusion.

[0028] Furthermore, a guide rod 305 is connected to the inner side of the guide cylinder 302, and a pressure plate 306 is sleeved on the outer side of the guide rod 305. The guide rod 305 enables the pressure plate 306 to move linearly under the action of the spring 304, preventing the pressure plate 306 from tilting, jamming or deviating, and improving the stability and reliability of the buffer pressing action.

[0029] Furthermore, the adjustment mechanism 4 includes a guide rail 401, a slide block 1 slidably connected above the guide rail 401, a slider 402 connected to one side of the slide block 1, a double-threaded screw 404 threadedly connected to one side of the slider 402, a disc gear 405 connected to one end of the double-threaded screw 404, a disc gear 405 meshing with one side of the disc gear 405, a force rod 407 connected to one end of the disc gear 405, and a protective box 408 sleeved on the outside of the force rod 407. Through the setting of the adjustment mechanism 4, the operator can drive the transmission gear 406 to rotate through the force rod 407, and the transmission gear 406 synchronously drives the disc gears 405 on both sides and the double-threaded screw 404 to rotate, thereby driving multiple sets of slide blocks 1 to move synchronously, realizing multi-position synchronous adjustment.

[0030] Furthermore, a guide rail 401 is installed above the base 9, and the slide block 1 is connected to the scraper 7 and slides on the guide rail 401. A fixing plate 403 is welded to one side of the base 9, and a bidirectional threaded screw 404 is rotatably connected to one side of the fixing plate 403. The slide block 1 is provided with four sets, and each two sets are connected to the two ends of a bidirectional threaded screw 404. The disc gear 405 is meshed with the transmission gear 406 on both sides. Through the cooperation of the four sets of slide blocks 1 and the two bidirectional threaded screws 404, the slide blocks 1 at both ends of the same bidirectional threaded screw 404 can move closer or further away synchronously when the screw rotates. Through the meshing of the disc gears 405 on both sides with the transmission gear 406, the two bidirectional threaded screws 404 can rotate synchronously, thereby realizing the synchronous adjustment of the four workstations, reducing the spacing error caused by adjusting one by one, and improving the processing efficiency of multi-stations.

[0031] Working principle: First, the screw-like workpieces to be processed are placed sequentially in the processing seat 5 above each slide 1, so that the lower end or center of the workpiece enters the positioning sleeve 6. The positioning sleeve 6 performs preliminary center positioning of the workpiece. Then, the fixing mechanism 2 is adjusted according to the height of the workpiece or processing requirements. The operator simultaneously rotates the force knobs 206 on both sides, causing the bearing plate 201 to move up and down along the threaded rod 204. During the movement of the bearing plate 201, the limiting rod 207 slides in the slide groove 203, guiding and limiting the bearing plate 201 to prevent it from swaying. When the bearing plate 201 is adjusted up and down, the measuring rod 205 serves as a height reading structure. The operator can read the height value of the bearing plate 201 through the measuring rod 205, so that the bearing plates 201 of multiple stations are adjusted to a consistent clamping height, thereby ensuring a unified clamping reference for multiple stations. When the bearing plate 201... 1. After adjustment, the bearing plate 201 presses the screw-like workpiece inside the positioning sleeve 6 from above. Simultaneously, the buffer assembly 3 provides auxiliary positioning for the outer periphery of the workpiece. Specifically, six sets of guide cylinders 302, arranged in a circular pattern at equal intervals on the inner side of the bearing rod 301, correspond to the circumferential positions of the workpiece. The pressure rod 303 and pressure plate 306 apply elastic pressure towards the workpiece under the action of the spring 304. The pressure plate 306 adheres to the outer wall of the workpiece, forming multi-point circumferential support for the screw-like workpiece. If there is a slight deviation in the outer diameter of the workpiece, the spring 304 can provide elastic relief, avoiding damage to the workpiece from rigid clamping. The smooth rod 305 guides the extension and retraction of the pressure plate 306, ensuring stability during pressing or rebound. Through the pressing of the upper bearing plate 201, the center positioning of the positioning sleeve 6, and the circumferential buffer support of the pressure plate 306, the workpiece can maintain good coaxiality and stability during processing. When it is necessary to adjust the distance between multiple workstations or adapt to different processing positions, the operator rotates the force rod 407. The force rod 407 drives the transmission gear 406 to rotate, and the transmission gear 406 simultaneously meshes and drives the two disc gears 405 to rotate. The two disc gears 405 respectively drive the corresponding double-sided threaded screws 404 to rotate. Since each double-sided threaded screw 404 has a slide block 1 threadedly connected to both ends, when the double-sided threaded screw 404 rotates, the two slide blocks 1 move synchronously closer or farther away along the guide rail 401. The two double-sided threaded screws 404 move synchronously under the action of the transmission gear 406 and the disc gears 405. The movement allows the four sets of slide blocks 1 to adjust their positions synchronously. During the movement of slide block 1, the scale mark 202 serves as a distance reference indicator for the movement of slide block 1. The limit rod 207 corresponds to the scale mark 202. The operator can read the movement distance value of slide block 1 through the limit rod 207 to determine whether the adjustment position of each station is consistent. Through this synchronous adjustment process, the spacing between multiple stations can be quickly changed, so that multiple screw-type workpieces maintain the corresponding processing arrangement position, improving the batch processing adjustment efficiency and position consistency. During the processing, slide block 1 drives the processing seat 5 and the workpiece to move along the guide rail 401 or remain in the set position.The guide rail 401 provides linear support and guidance for the slide 1. The fixed plate 403 provides rotational support for the bidirectional threaded screw 404. The protective box 408 shields and protects the area near the transmission gear 406, disc gear 405, and force rod 407, reducing the entry of machining debris into the transmission area. The scrapers 7 connected to both sides of the slide 1 synchronously approach the surface of the guide rail 401 or base 9 when the slide 1 moves, scraping machining debris, dust, or residues towards the chip removal groove 8. The chip removal groove 8 then collects and discharges the debris, preventing debris accumulation from affecting the movement accuracy of the slide 1 and the service life of the guide rail 401.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station synchronous machining fixture based on screw post positioning, comprising a slide (1), characterized in that: A fixing mechanism (2) is provided above the slide (1), a buffer assembly (3) is provided on one side of the fixing mechanism (2), and an adjustment mechanism (4) is provided on one side of the slide (1). The fixing mechanism (2) includes a bearing plate (201), a threaded rod (204) is threaded through one side of the bearing plate (201), a force-bearing button (206) is threaded through the outer side of the threaded rod (204), and a limit rod (207) is welded above the slide (1).

2. The multi-station synchronous machining fixture based on screw post positioning according to claim 1, characterized in that: A processing seat (5) is connected above the slide (1), a positioning sleeve (6) is provided on the inner side of the processing seat (5), scrapers (7) are connected on both sides of the slide (1), a chip removal groove (8) is opened above the slide (1), and a base (9) is welded on both sides of the slide (1).

3. The multi-station synchronous machining fixture based on screw post positioning according to claim 2, characterized in that: A threaded rod (204) is connected above the base (9), and a measuring rod (205) is connected above the base (9).

4. The multi-station synchronous machining fixture based on screw post positioning according to claim 1, characterized in that: A groove (203) is provided through the top of the bearing plate (201), and the limiting rod (207) slides inside the groove (203).

5. The multi-station synchronous machining fixture based on screw post positioning according to claim 1, characterized in that: A scale mark (202) is provided above the bearing plate (201). The scale mark (202) is provided on both sides of the slide groove (203). Two sets of limiting rods (207) are symmetrically provided above the slide block (1). A force button (206) is rotatably sleeved above the bearing plate (201).

6. The multi-station synchronous machining fixture based on screw post positioning according to claim 1, characterized in that: The buffer assembly (3) includes a support rod (301), and six sets of guide cylinders (302) are connected in a circular and equally spaced manner on the inner side of the support rod (301). A pressure rod (303) is slidably connected to the inner side of the guide cylinder (302), and a pressure plate (306) is connected to one end of the pressure rod (303).

7. The multi-station synchronous machining fixture based on screw post positioning according to claim 6, characterized in that: A spring (304) is connected to the inner side of the guide cylinder (302), and a pressure plate (306) is connected to one end of the spring (304).

8. The multi-station synchronous machining fixture based on screw post positioning according to claim 7, characterized in that: The guide cylinder (302) is connected to the inner side of a light rod (305), and a pressure plate (306) is sleeved on the outer side of the light rod (305).

9. A multi-station synchronous machining fixture based on screw post positioning according to claim 1, characterized in that: The adjustment mechanism (4) includes a guide rail (401), a slide block (1) is slidably connected above the guide rail (401), a slider (402) is connected to one side of the slide block (1), a double-threaded screw (404) is threaded through one side of the slider (402), a disc gear (405) is connected to one end of the double-threaded screw (404), a disc gear (405) is meshed with one side of the disc gear (405), a force rod (407) is connected to one end of the disc gear (405), and a protective box (408) is sleeved on the outside of the force rod (407).

10. A multi-station synchronous machining fixture based on screw post positioning according to claims 2 and 9, characterized in that: A guide rail (401) is installed above the base (9). The slide (1) is connected to the scraper (7) which slides on the guide rail (401). A fixing plate (403) is welded to one side of the base (9). A bidirectional threaded screw (404) is rotatably connected to one side of the fixing plate (403). The slide (1) is provided with four sets, and each two sets are connected to the two ends of a bidirectional threaded screw (404). The disc gear (405) meshes with the transmission gear (406) on both sides.

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