A positioning and clamping device for precision porous part machining

Abstract

The application relates to the technical field of positioning and clamping devices, and discloses a positioning and clamping device for precise multi-hole part machining, which comprises a device machine box, the top of the device machine box is fixedly connected with a butt joint base plate, the top of the butt joint base plate is movably connected with a butt joint clamp plate, the butt joint clamp plate is externally provided with a downward pressing reinforcing column, the top of the butt joint clamp plate is movably engaged with a workpiece clamping plate, the bottom of the workpiece clamping plate is provided with a synchronous motor, and the top of the butt joint base plate is fixedly connected with a positioning butt joint bolt; the positioning butt joint bolt installed on the top of the butt joint base plate and the butt joint conductive column are matched with each other, the accurate closed fixation of the butt joint clamp plate and the butt joint base plate can be realized, the foundation connection stability of the overall structure is ensured, meanwhile, the downward pressing force exerted by the downward pressing reinforcing column on the top of the butt joint clamp plate can effectively reduce the butt joint gap, the compactness of the connection part is further strengthened, and the structure is not prone to loosening during operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of positioning and clamping devices, and more particularly to a positioning and clamping device for precision multi-hole part machining. BACKGROUND

[0002] The positioning and clamping device for precision multi-hole part machining is mainly used to solve the problem of high-precision machining of complex multi-hole structure parts in the fields of aerospace and automobile manufacturing. The traditional machining method has technical bottlenecks such as insufficient repeated positioning accuracy, low clamping efficiency, and poor machining stability. The device can significantly improve the machining quality and production efficiency of multi-hole parts by using a modular vacuum adsorption platform, an intelligent pin array positioning system, and real-time thermal deformation compensation technology. It is widely used in batch manufacturing of key components such as aircraft engine fuel nozzles and automobile high-pressure common rail injectors. These components usually have characteristics such as dense hole positions, small hole diameters, and high position accuracy requirements. Traditional clamping methods cannot meet the machining requirements.

[0003] When the positioning and clamping device for precision multi-hole part machining is used, the plate of the mold needs to be connected and fixed to the bottom of the equipment to ensure the stability of the machining. However, during the connection process, if there is a gap at the connection, when the equipment is closed and fixed by air pressure, the gas is easy to leak from the gap, which causes the air pressure to be unable to maintain the preset pressure value. This leakage directly weakens the clamping force of the air pressure on the mold plate, causing the mold plate to slightly shake or shift during machining. This not only affects the positioning accuracy of the part machining, but also increases the machining error due to insufficient tightening effect, and even poses a safety hazard, thereby reducing the use reliability and machining quality of the equipment.

[0004] When the positioning and clamping device for precision multi-hole part machining is used, the operator manually grabs the bearing to control the clamping of the clamp. This manual operation method is prone to unstable clamping due to uneven force control and insufficient positioning accuracy. It is difficult to ensure the accurate positioning of the part, and the clamping deviation may cause machining size errors, resulting in a large amount of waste and reducing the pass rate of finished products. Moreover, the workpiece mold is prone to damage due to high-frequency stress and wear after long-term use, which significantly reduces the positioning accuracy. At this time, a new mold needs to be replaced to maintain the machining quality. However, the traditional mold is designed as a whole, so even if only a part (such as a positioning groove or clamping surface) is damaged, the entire mold cannot be used and must be replaced. The replacement process requires the gradual disassembly of components, which greatly affects the user experience. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a positioning and clamping device for precision multi-hole part machining to solve the problems in the background art.

[0006] The application provides the following technical scheme: a positioning and clamping device for precision multi-hole part machining, comprising a device case, a docking base plate fixedly connected to the top of the device case, a docking clamp plate movably connected to the top of the docking base plate, a lower pressing reinforcing column arranged outside the docking clamp plate, a workpiece clamping plate movably engaged with the top of the docking clamp plate, a synchronous motor arranged at the bottom of the workpiece clamping plate, a positioning docking bolt fixedly connected to the top of the docking base plate, a docking conductive column fixedly connected to the top of the docking base plate, a synchronous motor arranged at the top of the docking conductive column, a trapezoidal sliding groove formed in the top of the docking clamp plate, a trapezoidal block movably sleeved in the trapezoidal sliding groove, a workpiece clamping plate fixedly connected to the top of the trapezoidal block, and sliding groove fence plates movably connected to the two ends of the trapezoidal sliding groove.

[0007] Further, a sliding block groove is formed in the bottom of the docking clamp plate, a docking bolt hole is movably sleeved in the sliding block groove, and a conductive hole groove is formed in the middle of the docking clamp plate.

[0008] Further, a mold handle is fixedly connected to the outside of the docking clamp plate, and a scale table is fixedly connected to the outside of the docking clamp plate.

[0009] Further, a T-shaped piston rod is movably sleeved in the inside of the positioning docking bolt, and a circular rubber ring is movably sleeved on the outside of the T-shaped piston rod.

[0010] Further, a conductive copper sheet is fixedly connected to the bottom of the synchronous motor, a conductive rod is movably connected to the bottom of the conductive copper sheet, a T-shaped rubber pad is movably sleeved on the outside of the conductive rod (802), and a spring is fixedly connected to the bottom of the T-shaped rubber pad.

[0011] Further, a threaded hole block is fixedly connected to the bottom of the workpiece clamping plate, a threaded column is movably engaged in the inside of the threaded hole block, and a synchronous motor is movably connected to the outside of the threaded column.

[0012] Further, a semicircular strip column is fixedly connected to the outside of the lower pressing reinforcing column, a telescopic cylinder body is movably connected to the outside of the semicircular strip column, a cylinder gear is fixedly connected to the outside of the telescopic cylinder body, a gear strip is movably engaged with the outside of the cylinder gear, a movable roller is movably fixedly connected to the top of the gear strip, and a driving motor is movably engaged with the outside of the gear strip.

[0013] Further, an electric telescopic column is fixedly connected to the inside of the device case, a U-shaped bracket is fixedly connected to the top of the electric telescopic column, a first movable rod is movably connected to the outside of the U-shaped bracket, a second movable rod is movably connected to the outside of the first movable rod, a rubber piston is movably connected to the outside of the second movable rod, a piston pneumatic cavity is movably connected to the top of the rubber piston, and a gas conveying pipeline is fixedly connected to the top of the piston pneumatic cavity.

[0014] Technical effects and advantages of the present application:

[0015] The present application can realize precise closure and fixation of the butt joint clamp plate and the butt joint base plate by the cooperation of the positioning butt joint bolt installed on the top of the butt joint base plate and the butt joint conductive column, which can build a stable foundation connection for the overall structure, and at the same time, the downward pressure applied by the downward reinforcing column on the top of the butt joint clamp plate can effectively reduce the butt joint gap and further strengthen the tightness of the connection part, ensuring that the structure is not easy to loosen during operation.

[0016] The present application can quickly replace different specifications of workpiece clamps by freely disassembling the sliding groove fence, which improves the versatility and maintenance convenience of the equipment, the bottom sliding block groove and the butt joint base plate damping ring nest reduce the collision and wear during the closure of the positioning butt joint bolt, the synchronous motor drives the threaded column connected at both ends, controls the workpiece size adjustment clamping force, and the surface scale assists precise calibration of the clamp closure scale, reduces errors, and ensures the accuracy of subsequent processes. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The present application is a schematic diagram of the overall structure.

[0018] Figure 2 The present application is a schematic diagram of the butt joint clamp plate structure.

[0019] Figure 3 The present application is a schematic diagram of the workpiece clamp structure.

[0020] Figure 4 The present application is a schematic diagram of the butt joint base plate structure.

[0021] Figure 5 The present application is a schematic diagram of the downward reinforcing column structure.

[0022] Figure 6 The present application is a schematic diagram of the conductive hole groove structure.

[0023] Figure 7 The present application is a schematic diagram of the positioning butt joint bolt structure.

[0024] Figure 8 The present application is a schematic diagram of the butt joint conductive column structure.

[0025] Figure 9 The present application is a schematic diagram of the piston air pressure cavity structure.

[0026] The figure marks are: 1, device case; 2, docking chassis; 3, docking clamp plate; 4, down pressure reinforcing column; 5, workpiece clamping plate; 6, synchronous motor; 7, positioning docking bolt; 8, docking conductive column; 101, electric telescopic column; 102, U-shaped bracket; 103, first movable rod; 104, second movable rod; 105, rubber piston; 106, piston air pressure cavity; 107, gas pipeline; 301, trapezoidal sliding groove; 302, trapezoidal block; 303, sliding groove fence; 304, sliding block groove; 305, docking bolt hole; 306, conductive hole groove; 307, mold handle; 308, scale table; 401, semicircular strip column; 402, telescopic cylinder body; 403, cylinder body gear; 404, gear strip; 405, movable roller; 406, driving motor; 501, threaded hole block; 502, threaded column; 601, conductive copper sheet; 701, T-shaped piston rod; 702, circular rubber ring; 801, T-shaped rubber pad; 802, conductive rod; 803, spring. DETAILED DESCRIPTION

[0027] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application, and additionally, the forms of each structure described in the following embodiments are only examples, and the positioning and clamping device for precision multi-hole part machining involved in the present application is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0028] Referring to Figures 1-9 The present application provides a positioning and clamping device for precision multi-hole part machining, which comprises a device case 1, the top of the device case 1 is fixedly connected with a docking chassis 2, the top of the docking chassis 2 is movably connected with a docking clamp plate 3, the outside of the docking clamp plate 3 is provided with a down pressure reinforcing column 4, the top of the docking clamp plate 3 is movably engaged with a workpiece clamping plate 5, the bottom of the workpiece clamping plate 5 is provided with a synchronous motor 6, the top of the docking chassis 2 is fixedly connected with a positioning docking bolt 7, the top of the docking chassis 2 is fixedly connected with a docking conductive column 8, the top of the docking conductive column 8 is provided with a synchronous motor 6, which is beneficial to the precise closure and fixation of the docking clamp plate 3 and the docking chassis 2 through the cooperation of the positioning docking bolt 7 and the docking conductive column 8 installed on the top of the docking chassis 2, provides basic connection stability for the overall structure, at the same time, the down pressure reinforcing column 4 can effectively reduce the docking gap by exerting a downward pressure on the top of the docking clamp plate 3, further enhancing the tightness of the connection, the synchronous motor 6 drives the threaded column 502 connected at both ends, driving the workpiece clamping plate 5 to be precisely closed, the clamping force can be adjusted according to the size of the workpiece, realizing the stable clamping of the workpiece, the synergistic effect of multiple structures not only ensures the connection reliability of the clamp as a whole, but also stably fixes the workpiece, avoids positioning deviation or workpiece damage caused by loosening during the machining process, and improves the precision and safety of the operation.

[0029] In a preferred embodiment, the top of the docking fixture plate 3 is provided with a trapezoidal groove 301, and a trapezoidal block 302 is movably fitted inside the trapezoidal groove 301. The top of the trapezoidal block 302 is fixedly connected to the workpiece clamping plate 5, and the two ends of the trapezoidal groove 301 are movably connected to the groove guardrail 303. In another preferred embodiment, the trapezoidal groove 301 is provided at the top of the docking fixture plate 3, and the trapezoidal block 302 is movably fitted inside the trapezoidal groove 301. The top of the trapezoidal block 302 is fixedly connected to the workpiece clamping plate 5, and the two ends of the trapezoidal groove 301 are movably connected to the groove guardrail 303. This facilitates the precise limitation of the movement trajectory of the workpiece clamping plate 5 by the trapezoidal block 302 nested inside the trapezoidal groove 301, ensuring that it runs smoothly along a preset path during closing or opening, avoiding deviation that affects clamping accuracy. At the same time, the installed groove guardrail 303 can effectively block the trapezoidal block 302, preventing it from detaching from the trapezoidal groove 301 during operation, and ensuring the stability of the structure operation. In addition, the slide rail 303 is detachable, which makes it easy for operators to quickly replace workpiece clamping plates 5 of different specifications, flexibly adapt to diverse workpiece clamping needs, and improve the versatility and ease of maintenance of the equipment.

[0030] In a preferred embodiment, a slider groove 304 is provided at the bottom of the docking clamp plate 3, and the docking bolt hole 305 is movably sleeved inside the slider groove 304. A conductive hole groove 306 is provided in the middle of the docking clamp plate 3, and the conductive hole groove 306 is movably sleeved inside the conductive post 8. This facilitates the interlocking of the slider groove 304 at the bottom of the docking clamp plate 3 with the shock-absorbing ring at the top of the docking chassis 2, forming a buffer during the closing process of the positioning docking bolt 7 and the docking bolt hole 305, effectively reducing the collision wear generated when the two come into contact, and extending the service life of the components. At the same time, the conductive hole groove 306 on the docking clamp plate 3 provides contact space for the T-shaped rubber pad 801. When the clamp closes, the edge of the conductive hole groove 306 collides and contacts the T-shaped rubber pad 801, and the elastic properties of the rubber material further absorb the impact force, reduce the vibration generated by the closing action, improve the stability of the overall structure operation, and reduce the risk of component damage caused by hard collisions.

[0031] In a preferred implementation, the external fixing of the mold handle 307 on the docking clamp plate 3 and the external fixing of the scale table 308 on the docking clamp plate 3 are beneficial for providing a convenient holding point for the operator through the mold handle 307 installed on the outside of the docking clamp plate 3, facilitating the reduction of labor intensity during manual operation and improving operational flexibility when the docking clamp plate 3 is transported, moved, or position-adjusted. Meanwhile, the scale table 308 nested on the surface of the docking clamp plate 3 can provide intuitive numerical reference for the operator to calibrate the closed size of the workpiece clamp plate 5, facilitating precise control of the clamp plate closed size and effectively reducing calibration errors, thereby enhancing the accuracy of the equipment during workpiece clamping and ensuring the precision basis of subsequent processes such as machining or detection.

[0032] In a preferred implementation, the internal movable sleeve of the positioning docking plug 7 is connected to the T-shaped piston rod 701, and the external movable sleeve of the T-shaped piston rod 701 is connected to the circular rubber ring 702, which is beneficial for precisely controlling the up-and-down movement of the T-shaped piston rod 701 through the air pressure suction structure at the bottom of the positioning docking plug 7. When the T-shaped piston rod 701 moves downward, it will squeeze the circular rubber ring 702, causing the circular rubber ring 702 to come into close contact with the inner wall of the docking plug hole 305 and generate friction. With this friction, the connection tightness between the positioning docking plug 7 and the docking plug hole 305 can be effectively enhanced, achieving stable fixation of the two, avoiding loosening or displacement during equipment operation, and ensuring the reliability of the docking structure.

[0033] In a preferred implementation, the bottom of the synchronous motor 6 is fixedly connected to the conductive copper sheet 601, the bottom of the conductive copper sheet 601 is movably connected to the conductive rod 802, the external movable sleeve of the conductive rod 802 is connected to the T-shaped rubber pad 801, and the bottom of the T-shaped rubber pad 801 is fixedly connected to the spring 803. When the docking clamp plate 3 is closed on the top of the docking conductive column 8, the conductive groove 306 will press down the T-shaped rubber pad 801, and at this time the T-shaped rubber pad 801 plays a protective role for the conductive rod 802, avoiding direct collision of the conductive rod 802 during the closing process. With the downward pressing action, the conductive rod 802 originally covered by the T-shaped rubber pad 801 is exposed and precisely docks with the conductive copper sheet 601, forming a stable conductive path, which facilitates the circuit board inside the case to issue instructions through this path, achieving precise control of the running state of the synchronous motor 6. When the docking clamp plate 3 is opened and the T-shaped rubber pad 801 is separated from the pressing of the conductive groove 306, the T-shaped rubber pad 801 can be quickly reset by the elastic force of the spring 803, re-covering and protecting the conductive rod 802, effectively reducing the wear and tear of the conductive rod 802 due to exposure, thereby increasing its service life and ensuring the long-term stability of the conductive connection.

[0034] In a preferred implementation, the bottom of the workpiece clamping plate 5 is fixedly connected with a threaded hole block 501, the inside of the threaded hole block 501 is movably engaged with a threaded column 502, the outside of the threaded column 502 is movably connected with a synchronous motor 6, which is conducive to driving the threaded column 502 connected at both ends to rotate synchronously through the synchronous motor 6, and the precise engagement transmission between the threaded column 502 and the threaded hole block 501 converts the rotary motion of the motor into the linear motion of the workpiece clamping plate 5. By controlling the number of rotations and direction of the threaded column 502, the closing distance of the workpiece clamping plate 5 can be accurately adjusted to ensure smooth closing of the clamping plate according to the preset scale, thereby realizing accurate clamping of the workpiece, avoiding workpiece displacement due to loose clamping or workpiece damage caused by tight clamping, and providing a stable clamping basis for subsequent machining or detection processes.

[0035] In a preferred implementation, the outside of the downward pressing reinforcing column 4 is fixedly connected with a semicircular strip column 401, the outside of the semicircular strip column 401 is movably connected with a telescopic cylinder body 402, the outside of the telescopic cylinder body 402 is fixedly connected with a cylinder gear 403, the outside of the cylinder gear 403 is movably engaged with a gear strip 404, the top of the gear strip 404 is movably fixedly connected with a movable roller 405, and the outside of the gear strip 404 is movably engaged with a driving motor 406, which is conducive to driving the gear strip 404 to move in a predetermined direction through the rotation of the gear of the driving motor 406. During the movement of the gear strip 404, the cylinder gear 403 engaged with it rotates, thereby driving the telescopic cylinder body 402 connected with the cylinder gear 403 to rotate synchronously. The movable rollers 405 installed on the gear strip 404 can effectively limit its movement track to ensure smooth movement of the gear strip 404 without deviation. Controlling the rotation of the telescopic cylinder body 402 can conveniently release the extrusion and fixation state of the butt clamping plate 3, improve the operation flexibility, and at the same time, the semicircular strip column 401 outside the downward pressing reinforcing column 4 can fix the downward pressing reinforcing column 4 inside the telescopic cylinder body 402, effectively limiting the rotational freedom of the downward pressing reinforcing column 4 during its upward and downward movement, avoiding structural misalignment caused by shaking, and ensuring the stability and accuracy of the overall operation.

[0036] In a preferred implementation, the inside of the device cabinet 1 is fixedly connected with the electric telescopic column 101, the top of the electric telescopic column 101 is fixedly connected with the U-shaped bracket 102, the outside of the U-shaped bracket 102 is movably connected with the first movable rod 103, the outside of the first movable rod 103 is movably connected with the second movable rod 104, the outside of the second movable rod 104 is movably connected with the rubber piston 105, the top of the rubber piston 105 is movably connected with the piston air pressure cavity 106, the top of the piston air pressure cavity 106 is fixedly connected with the gas conveying pipeline 107, which is beneficial to accurately control the up-down movement of the U-shaped bracket 102 through the telescopic action of the electric telescopic column 101, and in the movement process of the U-shaped bracket 102, the connected first movable rod 103 and second movable rod 104 move synchronously, and then pull the rubber piston 105 to stably move in the piston air pressure cavity 106, the piston movement of the rubber piston 105 can change the air pressure in the piston air pressure cavity 106, and the generated air pressure is accurately conveyed to the inside of the positioning butt joint bolt 7 and the butt joint conductive column 8 through the gas conveying pipeline 107, and the close-fitting tightness between the positioning butt joint bolt 7 and the butt joint bolt hole 305 and the butt joint conductive column 8 and the conductive groove 306 can be enhanced by the action of air pressure, so that the two can be more stably and tightly connected, avoiding loosening during equipment operation, and ensuring the connection reliability of the overall structure.

[0037] The working principle of the present application is that the device core realizes accurate closure and fixation of the butt joint clamp plate 3 and the butt joint base plate 2 through the positioning butt joint bolt 7 and the butt joint conductive column 8 on the top of the butt joint base plate 2, laying the foundation for the basic stability of the overall structure. At the same time, the downward pressure column 4 exerts downward pressure on the top of the butt joint clamp plate 3, effectively reducing the butt joint gap and further enhancing the connection tightness. The synchronous motor 6 drives the two-threaded column 502 to rotate, driving the workpiece clamp plate 5 to accurately close, and the clamping force can be flexibly adjusted according to the size of the workpiece, realizing stable clamping and avoiding positioning deviation or workpiece damage caused by loosening during machining, significantly improving operation accuracy and safety. The movement track of the workpiece clamp plate 5 is accurately defined by the trapezoidal slide groove 301 and the trapezoidal block 302 nested inside, ensuring smooth operation along the preset path during closing or opening, avoiding deviation affecting clamping accuracy. The installed slide groove fence 303 can effectively prevent the trapezoidal block 302 from escaping from the slide groove, ensuring stable operation of the structure; and the slide groove fence 303 can be easily disassembled, facilitating quick replacement of different specifications of workpiece clamp plates 5, flexibly adapting to diversified clamping needs, improving equipment versatility and maintenance convenience. The slide block groove 304 on the bottom of the butt joint clamp plate 3 and the shock absorbing ring on the top of the butt joint base plate 2 are nested with each other, forming a buffer when the positioning butt joint bolt 7 and the butt joint bolt hole 305 are closed, reducing collision wear and extending the service life of the components. At the same time, the conductive groove 306 on the butt joint clamp plate 3 provides contact space for the T-shaped rubber pad 801, and when closed, the edge of the groove body collides with the rubber pad, absorbing impact force by the elasticity of the rubber, reducing vibration, improving overall operation stability, and reducing the risk of damage caused by hard collision.

[0038] The operation convenience aspect, the mold handle 307 outside the docking clamp plate 3 provides a convenient holding point, reduces the labor intensity during carrying and adjusting, and improves the operation flexibility. The scale table 308 nested on the surface of the plate body provides a direct numerical reference for calibrating the size of the workpiece clamp plate 5 closed, effectively reduces the calibration error, enhances the clamping accuracy, guarantees the subsequent machining precision, and the air pressure adsorption structure at the bottom of the positioning docking bolt 7 can accurately control the up and down movement of the T-shaped piston rod 701, when the piston rod moves down, it extrudes the circular rubber ring 702, so that it tightly rubs with the inner wall of the docking bolt hole 305, enhances the connection tightness, avoids loosening or displacement during equipment operation, guarantees the docking reliability, when the docking clamp plate 3 is closed, the conductive hole groove 306 presses the T-shaped rubber pad 801, protects the conductive rod 802 from direct collision; with the pressing action, the conductive rod 802 protrudes and accurately docks with the conductive copper sheet 601, forms a stable conductive path, facilitates the chassis circuit board to issue instructions, accurately controls the synchronous motor 6 operation. When the clamp plate is opened, the spring 803 restores quickly after the T-shaped rubber pad 801 is extruded, re-covers the conductive rod 802, reduces the exposure wear, prolongs the service life, and guarantees the long-term stability of the conductive connection.

[0039] The synchronous motor 6 drives the threaded column 502 to rotate synchronously, converts the rotary motion into the linear movement of the workpiece clamp plate 5 through the meshing transmission with the threaded hole block 501, accurately adjusts the clamping distance by controlling the number of rotation and direction of the threaded column, ensures smooth closing according to the preset size, realizes accurate clamping of the workpiece, avoids over-loose displacement or over-tight damage, provides a stable foundation for machining, the gear rotation of the driving motor 406 drives the gear strip 404 to move, drives the cylinder gear 403 and the connected telescopic cylinder 402 to rotate; the upper and lower movable rollers 405 on the gear strip 404 limit the movement trajectory, ensure smooth movement without deviation. Controlling the rotation of the telescopic cylinder can conveniently release the extrusion and fixation of the docking clamp plate 3, improve the operation flexibility; the semicircular strip column 401 outside the lower pressing column 4 is fixed inside the telescopic cylinder, limits the rotational freedom degree during up and down movement, avoids shaking and misplacement, guarantees the operation stability and accuracy, the telescopic action of the electric telescopic column 101 controls the up and down movement of the U-shaped bracket 102, drives the first movable rod 103 and the second movable rod 104 to pull the rubber piston 105 to move stably in the piston air pressure cavity 106, changes the air pressure in the cavity, the generated air pressure is delivered to the inside of the positioning docking bolt 7 and the docking conductive column 8 through the air conveying pipeline 107, enhances the close tightness of the two with the corresponding hole groove, realizes more stable fastening connection, avoids loosening during operation, guarantees the reliability of the overall structure connection.

[0040] Although the present application has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is defined by the appended claims and their equivalents.

[0041] Finally, it should be noted that in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, which can be mechanical connection or electrical connection, or the internal communication of two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0042] Secondly: the present application relates to the structure in the drawings of the present application, other structures can refer to the usual design, in the case of no conflict, the same invention and different invention of the present application can be combined;

[0043] Finally: the above only for the preferred invention of the present application, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A positioning and clamping device for precision machining of porous parts, comprising a device cabinet (1), characterized in that: The top of the device case (1) is fixedly connected with a docking chassis (2), the top of the docking chassis (2) is movably connected with a docking clamp plate (3), the outside of the docking clamp plate (3) is provided with a pressing reinforcing column (4), the top of the docking clamp plate (3) is movably engaged with a workpiece clamping plate (5), the bottom of the workpiece clamping plate (5) is provided with a synchronous motor (6), the top of the docking chassis (2) is fixedly connected with a positioning docking bolt (7), the top of the docking chassis (2) is fixedly connected with a docking conductive column (8), the top of the docking conductive column (8) is provided with a synchronous motor (6), the top of the docking clamp plate (3) is provided with a trapezoidal sliding groove (301), the inside of the trapezoidal sliding groove (301) is movably sleeved with a trapezoidal block (302), the top of the trapezoidal block (302) is fixedly connected with a workpiece clamping plate (5), both ends of the trapezoidal sliding groove (301) are movably connected with sliding groove fence plates (303). The bottom of the docking clamp plate (3) is provided with a sliding block groove (304), the inside of the sliding block groove (304) is movably sleeved with a docking bolt hole (305), the middle of the docking clamp plate (3) is provided with a conductive hole groove (306), the inside of the conductive hole groove (306) is movably sleeved with a docking conductive column (8). The bottom of the synchronous motor (6) is fixedly connected with a conductive copper sheet (601), the bottom of the conductive copper sheet (601) is movably connected with a conductive rod (802), the outside of the conductive rod (802) is movably sleeved with a T-shaped rubber pad (801), the bottom of the T-shaped rubber pad (801) is fixedly connected with a spring (803). The outside of the pressing reinforcing column (4) is fixedly connected with a semicircular strip column (401), the outside of the semicircular strip column (401) is movably connected with a telescopic cylinder body (402), the outside of the telescopic cylinder body (402) is fixedly connected with a cylinder gear (403), the outside of the cylinder gear (403) is movably engaged with a gear strip (404), the top of the gear strip (404) is movably fixedly connected with a movable roller (405), the outside of the gear strip (404) is movably engaged with a driving motor (406). The inside of the device case (1) is fixedly connected with an electric telescopic column (101), the top of the electric telescopic column (101) is fixedly connected with a U-shaped bracket (102), the outside of the U-shaped bracket (102) is movably connected with a first movable rod (103), the outside of the first movable rod (103) is movably connected with a second movable rod (104), the outside of the second movable rod (104) is movably connected with a rubber piston (105), the top of the rubber piston (105) is movably connected with a piston air pressure cavity (106), the top of the piston air pressure cavity (106) is fixedly connected with a gas conveying pipeline (107).

2. The positioning and clamping device for precision multi-hole part machining according to claim 1, characterized in that: The outside of the docking clamp plate (3) is fixedly connected with a mold handle (307), the outside of the docking clamp plate (3) is fixedly connected with a scale table (308).

3. The positioning and clamping device for precision multi-hole part machining according to claim 1, characterized in that: The inside of the positioning docking bolt (7) is movably sleeved with a T-shaped piston rod (701), the outside of the T-shaped piston rod (701) is movably sleeved with a circular rubber ring (702).

4. The positioning and clamping device for precision multi-hole part machining according to claim 1, characterized in that: The bottom of the workpiece clamping plate (5) is fixedly connected with a threaded hole block (501), the inside of the threaded hole block (501) is movably engaged with a threaded column (502), and the outside of the threaded column (502) is movably connected with a synchronous motor (6).

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