Metal parts processing center based on precision processing

Abstract

The present invention discloses a metal parts processing center based on precision machining, including a column, a base, a workbench, a tool and a machine head, wherein the column is located on one side of the base, the workbench is installed on the base, the machine head can be movably installed on the column and located above the workbench, the tool is installed on the machine head, and the workbench is equipped with a clamping fixture, wherein the clamping fixture further includes a base plate, a carrier plate and a cover plate, a partition is arranged between the cover plate and the workpiece, the upper surface of the partition plate is in contact with the lower surface of the cover plate, a plurality of annular grooves are arranged on the upper surface of the carrier plate and located directly below the workpiece, a plurality of staggered ventilation grooves are opened in each annular groove, a plurality of air holes are opened in the ventilation groove, and the air holes are connected to the vacuum generator through a pipeline. The present invention adopts a vacuum adsorption method to adsorb and fix the workpiece, and then cooperates with a pressure plate and a pressure head mechanism to achieve precise positioning and stable clamping of the workpiece.

Description

Technical Field

[0001] The invention relates to a metal parts processing center based on precision processing, belonging to the field of mechanical processing. Background Art

[0002] Computerized Numerical Control (CNC) is an automated machine tool equipped with a program control system that can logically process control codes or other symbolic instructions and decode them to enable the machine tool to move and process parts. Therefore, compared with traditional manufacturing, CNC has higher processing accuracy and automation, which saves a lot of manual operation links, improves productivity, and is widely used in the modernization process of manufacturing. Fixtures are very common parts in the industrial manufacturing industry that assist in production and processing. They fix the workpiece to be processed to facilitate transportation or related processing of the workpiece; especially when performing CNC processing, it is often necessary to clamp the workpiece to be processed with fixtures.

[0003] The rapid development of communication technology has accelerated the speed of electronic product replacement and also promoted the continuous innovation of the electronic product production chain. For the shell of electronic products, especially metal shells, due to their thin thickness and irregular shape, it is difficult for operators to fix the workpiece during the production process. The workpiece is easily deformed and damaged under the external force of the machine tool, and the processing error is large. At least two clamping operations are required. Multiple clamping operations will produce clamping deformation, vibration marks and joint marks, resulting in a high defective rate of products, low production efficiency, and difficulty in meeting the huge market demand for electronic products. Therefore, CNC fixture technology has become an important factor restricting the processing efficiency of metal parts of electronic products. Summary of the invention

[0004] The purpose of the present invention is to provide a metal parts processing center based on precision processing, which uses vacuum adsorption to adsorb and fix the workpiece, and then cooperates with a pressure plate and a pressure head mechanism to achieve precise positioning and stable clamping of the workpiece.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a metal parts processing center based on precision processing, including a column, a base, a workbench, a tool and a machine head, the column is located on one side of the base, the workbench is installed on the base, the machine head can be movably installed on the column and located above the workbench, the tool is installed on the machine head, the workbench is installed with a clamping fixture, and the workpiece to be processed is installed on the clamping fixture;

[0006] The clamping fixture further includes a base plate, a carrier plate and a cover plate, wherein the carrier plate is fixedly mounted on the upper surface of the base plate, the upper surface of the carrier plate is in contact with and connected to the lower surface of the workpiece, the cover plate is arranged above the workpiece, and the lower surface of the cover plate is pressed and connected to the workpiece, and a plurality of pressing head mechanisms are installed at the edges of the base plate, and the pressing head mechanisms are pressed and connected to the top surface of the cover plate;

[0007] The pressure head mechanism further includes a fixed plate, a fixed seat, a push-pull rod, a tilting plate, a pressure head and two connecting rotating plates symmetrically arranged on both sides of the fixed seat, one end of the fixed plate is mounted on the base plate, and a through hole for the push-pull rod to pass through is opened on the other end of the fixed plate away from the base plate, the upper end of the push-pull rod is rotatably connected to the connecting rotating plate, and the lower end of the push-pull rod passes through the fixed plate and is connected to a driving assembly;

[0008] The base portion at the lower end of the fixed seat is fixedly installed on the upper surface of the fixed plate, and the base portion is connected to a connecting portion inclined toward one side of the push-pull rod, and a first rotating shaft penetrating the connecting portion is installed at the lower end of the connecting portion, and a second rotating shaft penetrating the connecting portion is installed at the upper end of the connecting portion, and the two ends of the first rotating shaft extend from the two sides of the connecting portion respectively, and are respectively connected to the connecting rotating plate, and the second rotating shaft is rotatably connected to the end of the tilting plate;

[0009] The connecting rotating plate comprises a first strip portion and a second strip portion, one end of each of the first strip portion and the second strip portion is connected, so that an acute angle is formed between the first strip portion and the second strip portion, and a corner portion is formed at the connection between the first strip portion and the second strip portion, and the corner portions of the two connecting rotating plates are respectively rotatably connected to the two ends of the first rotating shaft;

[0010] One end of the two first strip portions opposite to the corner portion is rotatably connected to the upper end of the push-pull rod through a third rotating shaft, and a fourth rotating shaft is connected between one end of the two second strip portions opposite to the corner portion, and the fourth rotating shaft is rotatably connected to the rear end of the pressure head, and the rear end of the pressure head has a downwardly extending adapter, and the adapter is rotatably connected to the middle and rear part of the tilting plate through a fifth rotating shaft, and the front end lower surface of the pressure head can be pressed and contacted with the upper surface of the tilting plate;

[0011] The upper end of the push-pull rod is connected to a fixed block, and a strip through hole is opened on the fixed block. The third rotating shaft is embedded in the strip through hole, and the two ends of the third rotating shaft extend out from the strip through hole respectively. The first strip portions of the two connecting rotating plates are rotatably connected to the two ends of the third rotating shaft respectively;

[0012] The workpiece comprises a body, wherein two opposite edges of the body are provided with a first upward bending portion, the middle of another edge of the body is provided with a notch portion, and the edges at both ends of the groove are provided with second upward bending portions respectively;

[0013] A partition is provided between the cover plate and the workpiece, the lower surface of the partition is in contact with the upper surface of the body, the upper surface of the partition is higher than the top surface of the first bent portion and is in contact with the lower surface of the cover plate;

[0014] A plurality of annular grooves are arranged on the upper surface of the carrier plate and directly below the workpiece, each of which has a plurality of staggered ventilation grooves, each of which has a plurality of air holes connected to the vacuum generator through a pipeline, and a sealing ring is embedded in the annular groove.

[0015] The further improved scheme in the above technical scheme is as follows:

[0016] 1. In the above scheme, the air holes are arranged at the intersection of the ventilation grooves.

[0017] 2. In the above solution, a long annular groove is respectively provided at two opposite edges of the carrier plate.

[0018] 3. In the above solution, the workbench can be movably mounted on the base and can reciprocate in two directions perpendicular to each other.

[0019] 4. In the above solution, two limit blocks corresponding to the second bending portion are fixed on the carrier plate, and one side surface of the limit block is in contact with the outer surface of the second bending portion;

[0020] 5. In the above solution, at least two limiting posts are arranged on the upper surface of the substrate and located on one side of the carrier plate, and the cover plate is provided with through holes for the limiting posts to be embedded.

[0021] 6. In the above scheme, limit cards are installed at both ends of the first rotating shaft, the third rotating shaft and the fourth rotating shaft. The limit cards are embedded in the grooves at both ends of the first rotating shaft, the third rotating shaft or the fourth rotating shaft, and the inner surface of the limit card is in contact with the outer surface of the connecting rotating plate.

[0022] 7. In the above solution, a groove is formed at the upper end of the connection portion of the fixing seat for the rear end of the rocker plate to be embedded in. The rear end of the rocker plate is embedded in the groove on the connection portion and is rotatably connected to the fixing seat through the second rotating shaft.

[0023] 8. In the above solution, the adapter part at the rear end of the pressure head is two symmetrically arranged adapter plates, the tilting pressure plate is embedded between the two adapter plates, and is rotatably connected to the two adapter plates through the fifth rotating shaft.

[0024] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0025] 1. The present invention is based on a metal parts processing center for precision processing, and its pressure head mechanism structure is cleverly designed. Through the linkage of multiple components, the tilting plate and the pressure head provide double pressure, which not only enhances the pressure and stability of the tilting plate on the cover plate, but also avoids shaking, vibration, knife marks and the like due to insufficient clamping force when processing the workpiece, thereby improving the stability and quality of workpiece processing; it can also increase the pressure of the tilting plate when the driving force provided by the driving component is the same. Furthermore, when the length of the tilting plate is relatively long, the second pressure is provided by the pressure head in the middle of the tilting plate so that the tilting plate can clamp the cover plate at a distance with a stable and constant pressure, thereby providing more space for the processing of the workpiece, and can process the workpiece in multiple processes at one time, thereby improving the processing effect and efficiency of the workpiece; in addition, through the coordinated arrangement of the push rod and each structure, the maximum angle that the tilting plate can open is greater than 90°, which is convenient for clamping the workpiece without damaging the clamped objects, thereby further improving the stability and quality of workpiece processing.

[0026] 2. The present invention is based on a precision-processed metal parts processing center, in which a partition is arranged between the cover plate and the workpiece, the lower surface of the partition is in contact with the upper surface of the body, the upper surface of the partition is higher than the top surface of the first bending portion and is in contact with the lower surface of the cover plate, and the partition is arranged to avoid direct contact between the cover plate with higher hardness and the workpiece, which not only avoids the wear of the cover plate on the workpiece, but also enables the force applied to the cover plate by the pressure head mechanism to be evenly applied to the workpiece, while ensuring the stability of the clamping force on the workpiece and avoiding damage to the workpiece due to excessive local force; in addition, two limit blocks corresponding to the second bending portion are fixed on the carrier plate, one side surface of the limit block is in contact with the outer surface of the second bending portion, at least two limit columns are arranged on the upper surface of the substrate and on one side of the carrier plate, and the cover plate is provided with a through hole for the limit column to be embedded, the setting of the limit block preliminarily positions the workpiece, which is convenient for accurate positioning of the workpiece, and the setting of the limit column provides a limit for the cover plate, so that the cover plate can be installed quickly and accurately.

[0027] 3. The present invention is based on a precision machining metal parts machining center, and a plurality of annular grooves are arranged on the upper surface of the carrier plate and directly below the workpiece, and a plurality of staggered ventilation grooves are opened in each annular groove, and a plurality of air holes are opened in the ventilation groove, and the air holes are connected with the vacuum generator through a pipeline, and the workpiece is adsorbed and fixed by vacuum adsorption, which is convenient for the preliminary positioning of the workpiece, so that the workpiece and the carrier plate are closely fitted, and then the pressure plate and the pressure head mechanism are cooperated to realize the precise positioning and stable clamping of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 It is a structural schematic diagram of a metal parts processing center based on precision processing of the present invention;

[0029] Attached Figure 2 is a schematic diagram of the structure of the workpiece to be processed;

[0030] Attached Figure 3 This is a schematic diagram of the structure of a clamping fixture for a metal parts processing center based on precision processing of the present invention;

[0031] Attached Figure 4 It is a front view of the structure of the pressing head mechanism of the metal parts processing center based on precision processing of the present invention;

[0032] Attached Figure 5 The schematic diagram of the structure of the press head mechanism of the metal parts processing center based on precision processing of the present invention is shown in FIG. Figure 1 ;

[0033] Attached Figure 6 The schematic diagram of the structure of the press head mechanism of the metal parts processing center based on precision processing of the present invention is shown in FIG. Figure 2 ;

[0034] Attached Figure 7 For attachment Figure 6 A magnified view of the local structure;

[0035] Attached Figure 8 It is a schematic diagram of the structure of the connecting rotating plate of the pressing head mechanism of the metal parts processing center of the present invention;

[0036] Attached Fig. 9 It is a schematic diagram of the structure of the fixing seat of the pressing head mechanism of the metal parts processing center of the present invention;

[0037] Attached Fig.10 It is a schematic diagram of the structure of the carrier plate of the clamping fixture of the metal parts processing center of the present invention;

[0038] Attached Fig.11 It is a schematic diagram of the partial structure of the clamping fixture of the metal parts processing center of the present invention.

[0039] In the above figures: 1, substrate; 2, carrier; 3, workpiece; 301, body; 302, first bending portion; 303, notch portion; 304, second bending portion; 4, partition; 5, cover plate; 6, pressure head mechanism; 601, fixing plate; 602, fixing seat; 6021, base portion; 6022, connecting portion; 603, push-pull rod; 604, tilting plate; 605, pressure head; 6051, adapter; 606, through hole; 607, driving assembly; 608, first rotating shaft; 60 9. Second rotating shaft; 610. Third rotating shaft; 611. Fourth rotating shaft; 612. Fifth rotating shaft; 613. Fixed block; 6131. ​​Strip through hole; 614. Connecting rotating plate; 6141. First strip portion; 6142. Second strip portion; 6143. Corner portion; 10. Annular groove; 11. Ventilation groove; 12. Air hole; 16. Limit block; 17. Limit column; 21. Column; 22. Base; 23. Workbench; 24. Tool; 25. Machine head; 26. Clamping fixture. DETAILED DESCRIPTION

[0040] In the description of this patent, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0041] Embodiment 1: A metal parts processing center based on precision processing, comprising a column 21, a base 22, a workbench 23, a tool 24 and a machine head 25, wherein the column 21 is located on one side of the base 22, the workbench 23 is mounted on the base 22, the machine head 25 is movably mounted on the column 21 and located above the workbench 23, the tool 24 is mounted on the machine head 25, and the workbench 23 is mounted with a clamping fixture 26, on which a workpiece 3 to be processed is mounted;

[0042] The clamping fixture 26 further includes a base plate 1, a carrier plate 2 and a cover plate 5, wherein the carrier plate 2 is fixedly mounted on the upper surface of the base plate 1, the upper surface of the carrier plate 2 is in contact with and connected to the lower surface of the workpiece 3, the cover plate 5 is disposed above the workpiece 3, and the lower surface of the cover plate 5 is pressed and connected to the workpiece 3, and a plurality of pressing head mechanisms 6 are installed at the edges of the base plate 1, and the pressing head mechanisms 6 are pressed and connected to the top surface of the cover plate 5;

[0043] The pressure head mechanism 6 further includes a fixed plate 601, a fixed seat 602, a push-pull rod 603, a tilting plate 604, a pressure head 605 and two connecting rotating plates 614 symmetrically arranged on both sides of the fixed seat 602. One end of the fixed plate 601 is mounted on the base plate 1. The other end of the fixed plate 601 away from the base plate 1 is provided with a through hole 606 for the push-pull rod 603 to pass through. The upper end of the push-pull rod 603 is rotatably connected to the connecting rotating plate 614. The lower end of the push-pull rod 603 passes through the fixed plate 601 and is connected to a driving component 607.

[0044] The base portion 6021 at the lower end of the fixed seat 602 is fixedly installed on the upper surface of the fixed plate 601, and the base portion 6021 is connected to a connecting portion 6022 inclined to one side of the push-pull rod 603, and a first rotating shaft 608 penetrating the connecting portion 6022 is installed at the lower end of the connecting portion 6022, and a second rotating shaft 609 penetrating the connecting portion 6022 is installed at the upper end of the connecting portion 6022, and two ends of the first rotating shaft 608 extend from both sides of the connecting portion 6022 respectively, and are respectively connected to the connecting rotating plate 614, and the second rotating shaft 609 is rotatably connected to the end of the tilting plate 604;

[0045] The connecting rotating plate 614 includes a first strip portion 6141 and a second strip portion 6142, and one end of each of the first strip portion 6141 and the second strip portion 6142 is connected, so that an acute angle is formed between the first strip portion 6141 and the second strip portion 6142, and a corner portion 6143 is formed at the connection between the first strip portion 6141 and the second strip portion 6142, and the corner portions 6143 of the two connecting rotating plates 614 are respectively rotatably connected to the two ends of the first rotating shaft 608;

[0046] One end of the two first strip portions 6141 opposite to the corner portion 6143 is rotatably connected to the upper end of the push-pull rod 603 via a third rotating shaft 610, and one end of the two second strip portions 6142 opposite to the corner portion 6143 is connected with a fourth rotating shaft 611, and the fourth rotating shaft 611 is rotatably connected to the rear end of the pressing head 605, and the rear end of the pressing head 605 has a downwardly extending adapter portion 6051, and the adapter portion 6051 is rotatably connected to the middle and rear part of the tilting plate 604 via a fifth rotating shaft 612, and the lower surface of the front end of the pressing head 605 can be pressed and contacted with the upper surface of the tilting plate 604;

[0047] The upper end of the push-pull rod 603 is connected to a fixed block 613, and a strip-shaped through hole 6131 is opened on the fixed block 613. The third rotating shaft 610 is embedded in the strip-shaped through hole 6131, and the two ends of the third rotating shaft 610 extend out from the strip-shaped through hole 6131 respectively. The first strip portions 6141 of the two connecting rotating plates 614 are rotatably connected to the two ends of the third rotating shaft 610 respectively;

[0048] The workpiece 3 includes a body 301, and the body 301 has an upward first bending portion 302 at two opposite edges, and a notch portion 303 at the middle of another edge of the body 301, and the edges at both ends of the notch portion 303 have upward second bending portions 304 respectively;

[0049] A partition plate 4 is disposed between the cover plate 5 and the workpiece 3, the lower surface of the partition plate 4 is in contact with the upper surface of the body 301, the upper surface of the partition plate 4 is higher than the top surface of the first bent portion 302 and is in contact with the lower surface of the cover plate 5;

[0050] A plurality of annular grooves 10 are provided on the upper surface of the carrier plate 2 and directly below the workpiece 3. A plurality of staggered ventilation grooves 11 are provided in each annular groove 10. A plurality of air holes 12 are provided in the ventilation groove 11. The air holes 12 are connected to the vacuum generator through a pipeline. A sealing ring is embedded in the annular groove 10.

[0051] The air hole 12 is arranged at the intersection of the ventilation groove 11; a long annular groove 10 is respectively arranged at two opposite edges of the carrier plate 2; the workbench 23 is movably mounted on the base 22 and can reciprocate in two directions perpendicular to each other;

[0052] Both ends of the first rotating shaft 608, the third rotating shaft 610 and the fourth rotating shaft 611 are equipped with limit cards 615, which are embedded in the grooves at both ends of the first rotating shaft 608, the third rotating shaft 610 or the fourth rotating shaft 611, and the inner surface of the limit card 615 is in contact with the outer surface of the connecting rotating plate 614;

[0053] The driving assembly 607 is a cylinder installed on the lower surface of the fixed plate 601; the carrier plate 2 is an epoxy resin plate; the number of the pressure head mechanisms 6 is 8, which are installed in groups of two at the four edges of the substrate 1; the partition 4 is a glass fiber partition.

[0054] Embodiment 2: A metal parts processing center based on precision processing, comprising a column 21, a base 22, a workbench 23, a tool 24 and a machine head 25, wherein the column 21 is located on one side of the base 22, the workbench 23 is mounted on the base 22, the machine head 25 is movably mounted on the column 21 and located above the workbench 23, the tool 24 is mounted on the machine head 25, and the workbench 23 is equipped with a clamping fixture 26, on which a workpiece 3 to be processed is mounted;

[0055] The clamping fixture 26 further includes a base plate 1, a carrier plate 2 and a cover plate 5, wherein the carrier plate 2 is fixedly mounted on the upper surface of the base plate 1, the upper surface of the carrier plate 2 is in contact with and connected to the lower surface of the workpiece 3, the cover plate 5 is disposed above the workpiece 3, and the lower surface of the cover plate 5 is pressed and connected to the workpiece 3, and a plurality of pressing head mechanisms 6 are installed at the edges of the base plate 1, and the pressing head mechanisms 6 are pressed and connected to the top surface of the cover plate 5;

[0056] The pressure head mechanism 6 further includes a fixed plate 601, a fixed seat 602, a push-pull rod 603, a tilting plate 604, a pressure head 605 and two connecting rotating plates 614 symmetrically arranged on both sides of the fixed seat 602. One end of the fixed plate 601 is mounted on the base plate 1. The other end of the fixed plate 601 away from the base plate 1 is provided with a through hole 606 for the push-pull rod 603 to pass through. The upper end of the push-pull rod 603 is rotatably connected to the connecting rotating plate 614. The lower end of the push-pull rod 603 passes through the fixed plate 601 and is connected to a driving component 607.

[0057] The base portion 6021 at the lower end of the fixed seat 602 is fixedly installed on the upper surface of the fixed plate 601, and the base portion 6021 is connected to a connecting portion 6022 inclined to one side of the push-pull rod 603, and a first rotating shaft 608 penetrating the connecting portion 6022 is installed at the lower end of the connecting portion 6022, and a second rotating shaft 609 penetrating the connecting portion 6022 is installed at the upper end of the connecting portion 6022, and two ends of the first rotating shaft 608 extend from both sides of the connecting portion 6022 respectively, and are respectively connected to the connecting rotating plate 614, and the second rotating shaft 609 is rotatably connected to the end of the tilting plate 604;

[0058] The connecting rotating plate 614 includes a first strip portion 6141 and a second strip portion 6142, and one end of each of the first strip portion 6141 and the second strip portion 6142 is connected, so that an acute angle is formed between the first strip portion 6141 and the second strip portion 6142, and a corner portion 6143 is formed at the connection between the first strip portion 6141 and the second strip portion 6142, and the corner portions 6143 of the two connecting rotating plates 614 are respectively rotatably connected to the two ends of the first rotating shaft 608;

[0059] One end of the two first strip portions 6141 opposite to the corner portion 6143 is rotatably connected to the upper end of the push-pull rod 603 via a third rotating shaft 610, and one end of the two second strip portions 6142 opposite to the corner portion 6143 is connected with a fourth rotating shaft 611, and the fourth rotating shaft 611 is rotatably connected to the rear end of the pressing head 605, and the rear end of the pressing head 605 has a downwardly extending adapter portion 6051, and the adapter portion 6051 is rotatably connected to the middle and rear part of the tilting plate 604 via a fifth rotating shaft 612, and the lower surface of the front end of the pressing head 605 can be pressed and contacted with the upper surface of the tilting plate 604;

[0060] The upper end of the push-pull rod 603 is connected to a fixed block 613, and a strip-shaped through hole 6131 is opened on the fixed block 613. The third rotating shaft 610 is embedded in the strip-shaped through hole 6131, and the two ends of the third rotating shaft 610 extend out from the strip-shaped through hole 6131 respectively. The first strip portions 6141 of the two connecting rotating plates 614 are rotatably connected to the two ends of the third rotating shaft 610 respectively;

[0061] The workpiece 3 includes a body 301, and the body 301 has an upward first bending portion 302 at two opposite edges, and a notch portion 303 at the middle of another edge of the body 301, and the edges at both ends of the notch portion 303 have upward second bending portions 304 respectively;

[0062] A partition plate 4 is disposed between the cover plate 5 and the workpiece 3, the lower surface of the partition plate 4 is in contact with the upper surface of the body 301, the upper surface of the partition plate 4 is higher than the top surface of the first bent portion 302 and is in contact with the lower surface of the cover plate 5;

[0063] A plurality of annular grooves 10 are provided on the upper surface of the carrier plate 2 and directly below the workpiece 3. A plurality of staggered ventilation grooves 11 are provided in each annular groove 10. A plurality of air holes 12 are provided in the ventilation groove 11. The air holes 12 are connected to the vacuum generator through a pipeline. A sealing ring is embedded in the annular groove 10.

[0064] Two limiting blocks 16 corresponding to the second bending portion 304 are fixed on the carrier plate 2, and one side surface of the limiting block 16 is in contact with the outer surface of the second bending portion 304; at least two limiting posts 17 are arranged on the upper surface of the substrate 1 and located on one side of the carrier plate 2, and a through hole for the limiting posts 17 to be embedded is arranged on the cover plate 5;

[0065] The upper end of the connection portion 6022 of the fixing seat 602 is provided with a groove for the rear end of the tilting pressure plate 604 to be inserted. The rear end of the tilting pressure plate 604 is inserted into the groove on the connection portion 6022 and is rotatably connected to the fixing seat 602 through the second rotating shaft 609. The adapter portion 6051 at the rear end of the pressure head 605 is two symmetrically arranged adapter plates. The tilting pressure plate 604 is inserted between the two adapter plates and is rotatably connected to the two adapter plates through the fifth rotating shaft 612.

[0066] The above-mentioned carrier plate 2 is a glass fiber board; the above-mentioned partition plate 4 is a polyurethane partition plate, and the two side surfaces of the partition plate 4 are respectively in contact with the inner surfaces of the two first bending parts 302, and a plurality of avoidance grooves are respectively opened on the two side surfaces of the partition plate 4, and the avoidance grooves are arranged corresponding to the processing positions of the workpiece 3.

[0067] When the above-mentioned metal parts processing center based on precision processing is adopted, the structure design of the pressure head mechanism is ingenious. Through the linkage of multiple components, the tilting plate and the pressure head provide double pressure, which not only enhances the strength and stability of the tilting plate pressing the cover plate, but also avoids shaking, knife vibration, knife marks and the like due to insufficient clamping force when processing the workpiece, thereby improving the stability and quality of workpiece processing; it can also increase the pressing force of the tilting plate under the condition that the driving force provided by the driving component is the same. Furthermore, when the length of the tilting plate is relatively long, the second pressure is provided by the pressure head in the middle of the tilting plate so that the tilting plate can clamp the cover plate at a distance with stable and constant pressure, thereby providing more space for the processing of the workpiece, and can process the workpiece in multiple processes at one time, thereby improving the processing effect and efficiency of the workpiece; in addition, through the coordinated setting of the push rod and each structure, the maximum angle that the tilting plate can open is greater than 90°, which is convenient for clamping the workpiece without damaging the clamped objects, further improving the stability and quality of workpiece processing;

[0068] By setting the partition, the cover plate with higher hardness is prevented from directly contacting with the workpiece, which not only avoids the wear of the cover plate on the workpiece, but also allows the force applied by the pressure head mechanism to the cover plate to be evenly applied to the workpiece, ensuring the stability of the clamping force of the workpiece while avoiding damage to the workpiece due to excessive local force; in addition, the setting of the limit block can perform preliminary positioning of the workpiece, which is convenient for the precise positioning of the workpiece, while the setting of the limit column provides a limit for the cover plate, so that the cover plate can be installed quickly and accurately; in addition, the workpiece is adsorbed and fixed by vacuum adsorption, which is convenient for the preliminary positioning of the workpiece, so that the workpiece and the carrier plate fit tightly, and then the pressure plate and the pressure head mechanism are coordinated to achieve precise positioning and stable clamping of the workpiece.

[0069] When in use, the push-pull rod is pushed upward by the driving assembly, and the force is transmitted so that the tilting plate moves downward to press the cover plate. Then the driving assembly continues to drive the push-pull rod upward, and then the force is further transmitted so that the front end of the pressure head presses the tilting plate downward, providing a second pressure for the tilting plate, further enhancing the size and stability of the pressure of the tilting plate on the cover plate.

[0070] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal parts processing center based on precision processing, characterized by: The machine tool comprises a column (21), a base (22), a workbench (23), a tool (24) and a machine head (25), wherein the column (21) is located on one side of the base (22), the workbench (23) is mounted on the base (22), the machine head (25) is movably mounted on the column (21) and is located above the workbench (23), the tool (24) is mounted on the machine head (25), and the workbench (23) is mounted with a clamping fixture (26), on which a workpiece (3) to be processed is mounted; The clamping fixture (26) further comprises a base plate (1), a carrier plate (2) and a cover plate (5), wherein the carrier plate (2) is fixedly mounted on the upper surface of the base plate (1), the upper surface of the carrier plate (2) is in contact with and connected to the lower surface of the workpiece (3), the cover plate (5) is arranged above the workpiece (3), and the lower surface of the cover plate (5) is pressed and connected to the workpiece (3), and a plurality of pressing head mechanisms (6) are mounted on the edges of the base plate (1), and the pressing head mechanisms (6) are pressed and connected to the top surface of the cover plate (5); The pressure head mechanism (6) further comprises a fixed plate (601), a fixed seat (602), a push-pull rod (603), a tilting plate (604), a pressure head (605) and two connecting rotating plates (614) symmetrically arranged on both sides of the fixed seat (602), one end of the fixed plate (601) is mounted on the base plate (1), and the other end of the fixed plate (601) away from the base plate (1) is provided with a through hole (606) for the push-pull rod (603) to pass through, the upper end of the push-pull rod (603) is rotatably connected to the connecting rotating plate (614), and the lower end of the push-pull rod (603) passes through the fixed plate (601) and is connected to a driving component (607); The base portion (6021) at the lower end of the fixed seat (602) is fixedly mounted on the upper surface of the fixed plate (601), and the base portion (6021) is connected to a connecting portion (6022) inclined toward one side of the push-pull rod (603), and a first rotating shaft (608) penetrating the connecting portion (6022) is installed at the lower end of the connecting portion (6022), and a second rotating shaft (609) penetrating the connecting portion (6022) is installed at the upper end of the connecting portion (6022), and two ends of the first rotating shaft (608) extend from two sides of the connecting portion (6022) and are respectively connected to the connecting rotating plate (614), and the second rotating shaft (609) is rotatably connected to the end of the tilting and pressing plate (604); The connecting rotating plate (614) comprises a first strip portion (6141) and a second strip portion (6142), wherein one end of each of the first strip portion (6141) and the second strip portion (6142) are connected, thereby forming an acute angle between the first strip portion (6141) and the second strip portion (6142), and a corner portion (6143) is formed at the connection between the first strip portion (6141) and the second strip portion (6142), and the corner portions (6143) of the two connecting rotating plates (614) are respectively connected to the two ends of the first rotating shaft (608) for rotation; One end of the two first strip portions (6141) opposite to the corner portion (6143) is rotatably connected to the upper end of the push-pull rod (603) via a third rotating shaft (610); a fourth rotating shaft (611) is connected between one end of the two second strip portions (6142) opposite to the corner portion (6143); the fourth rotating shaft (611) is rotatably connected to the rear end of the pressing head (605); the rear end of the pressing head (605) has a connecting portion (6051) extending downward; the connecting portion (6051) is rotatably connected to the middle and rear part of the tilting plate (604) via a fifth rotating shaft (612); the lower surface of the front end of the pressing head (605) can be in compression contact with the upper surface of the tilting plate (604); The upper end of the push-pull rod (603) is connected to a fixed block (613), and a strip-shaped through hole (6131) is formed on the fixed block (613). The third rotating shaft (610) is embedded in the strip-shaped through hole (6131), and the two ends of the third rotating shaft (610) extend out from the strip-shaped through hole (6131) respectively. The first strip portions (6141) of the two connecting rotating plates (614) are rotatably connected to the two ends of the third rotating shaft (610) respectively. The workpiece (3) comprises a body (301), wherein two opposite edges of the body (301) are provided with an upward first bending portion (302), the middle portion of another edge of the body (301) is provided with a notch portion (303), and the edges at both ends of the notch portion (303) are provided with upward second bending portions (304) respectively; A partition plate (4) is provided between the cover plate (5) and the workpiece (3), the lower surface of the partition plate (4) being in contact and connected with the upper surface of the body (301), the upper surface of the partition plate (4) being higher than the top surface of the first bent portion (302) and being in contact and connected with the lower surface of the cover plate (5); A plurality of annular grooves (10) are provided on the upper surface of the carrier plate (2) and located directly below the workpiece (3), each annular groove (10) having a plurality of staggered ventilation grooves (11) therein, a plurality of air holes (12) therein, the air holes (12) being connected to the vacuum generator via a pipeline, and a sealing ring is embedded in the annular groove (10).

2. The metal parts processing center based on precision processing according to claim 1, characterized in that: The air holes (12) are arranged at the intersections of the ventilation grooves (11).

3. The metal parts processing center based on precision processing according to claim 1, characterized in that: A long annular groove (10) is respectively provided at two opposite edges of the carrier plate (2).

4. The metal parts processing center based on precision processing according to claim 1, characterized in that: The workbench (23) is movably mounted on the base (22) and can reciprocate in two directions perpendicular to each other.

5. The metal parts processing center based on precision processing according to claim 1, characterized in that: Two limit blocks (16) corresponding to the second bending portion (304) are fixed on the carrier plate (2), and one side surface of the limit block (16) is in contact with and connected to the outer side surface of the second bending portion (304).

6. The metal parts processing center based on precision processing according to claim 5, characterized in that: At least two limiting columns (17) are provided on the upper surface of the base plate (1) and located on one side of the carrier plate (2), and through holes for the limiting columns (17) to be embedded are provided on the cover plate (5).

7. The metal parts processing center based on precision processing according to claim 1, characterized in that: Limiting cards (615) are installed at both ends of the first rotating shaft (608), the third rotating shaft (610) and the fourth rotating shaft (611). The limiting cards (615) are embedded in grooves at both ends of the first rotating shaft (608), the third rotating shaft (610) or the fourth rotating shaft (611), and the inner surface of the limiting card (615) is in contact with the outer surface of the connecting rotating plate (614).

8. The metal parts processing center based on precision processing according to claim 1, characterized in that: The upper end of the connection portion (6022) of the fixed seat (602) is provided with a groove for the rear end of the tilting pressure plate (604) to be embedded in. The rear end of the tilting pressure plate (604) is embedded in the groove on the connection portion (6022) and is rotationally connected to the fixed seat (602) via the second rotating shaft (609).

9. The metal parts processing center based on precision processing according to claim 1, characterized in that: The adapter part (6051) at the rear end of the pressure head (605) is two symmetrically arranged adapter plates, and the tilting pressure plate (604) is embedded between the two adapter plates and is rotationally connected to the two adapter plates via the fifth rotating shaft (612).

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