CNC machining positioning device

Abstract

The invention discloses a CNC machining positioning device which is applied to the field of positioning devices.According to the CNC machining positioning device, a vacuum suction cup is arranged to be used for adsorbing a workpiece to achieve positioning of the workpiece, and three side top clamping air cylinders are matched with the vacuum suction cup to achieve side face pushing and clamping of the workpiece; five pressing fixing air cylinders which are divided into two groups are arranged to be matched with vacuum chucks for supporting at the lower part, so that pressing clamping and fixing of the workpiece can be realized; according to the positioning device, the workpiece is positioned more stably by adopting three-way clamping including downward pressing, side jacking and vacuum adsorption. The feeding and discharging driving assembly is arranged to drive the four supporting assemblies to drive the feeding push plate and the discharging push plate to reciprocate correspondingly, and feeding and discharging of workpieces can be achieved. And a spring and a telescopic rod of the supporting assembly can assist the feeding push plate and the discharging push plate to synchronously follow along with the height of the vacuum suction cup, and sliding of the feeding push plate and the discharging push plate on the feeding and discharging table and the connecting table cannot be affected under the action of a ball.

Description

Technical Field

[0001] The invention relates to the field of positioning devices, and in particular to a CNC machining positioning device. Background Art

[0002] With the rapid development of society, economic strength and progress in scientific research, CNC machine tools are widely used in mechanical processing. CNC machine tools are the foundation of equipment manufacturing industry. To revitalize the equipment manufacturing industry, we must first revitalize the CNC machine tool industry. The level of a country's CNC machine tool industry has become an important indicator of the country's manufacturing level, industrial modernization level and national comprehensive competitiveness. It is directly related to the country's economic construction, national defense security and strategic position. CNC lathes, as an important component, have important significance for their research. Computer numerical control machine tools are an automated machine tool equipped with a program control system that can logically process programs specified by control codes or other symbolic instructions and decode them to enable the machine tool to move and process parts.

[0003] CNC machining usually refers to computer digital controlled precision machining, CNC machining lathes, CNC machining milling machines, CNC machining boring and milling machines, etc. The CNC lathe feed processing route refers to the path that the turning tool takes from the tool setting point (or the fixed origin of the machine tool) until it returns to the point and ends the machining program, including the cutting path and non-cutting idle travel paths such as tool cutting in and out.

[0004] During the machining process of CAN CNC machine tools, a positioning device is used to achieve the positioning of the workpiece. The existing positioning device adopts clamping on both sides. Although it can meet the clamping and positioning of the workpiece, the clamping stability on both sides is insufficient, and the positioning stability of the workpiece needs to be enhanced.

[0005] In order to solve the above problems, we propose a CNC machining positioning device. Summary of the invention

[0006] The object of the present invention is to provide a CNC machining positioning device, which has the advantage of increasing the stability of workpiece positioning.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions: a CNC machining positioning device, including a positioning table, a telescopic positioning cylinder is installed on the top of the positioning table, a vacuum suction cup is installed on the output end of the telescopic positioning cylinder, three side top clamping cylinders installed with the positioning table are respectively provided on one side of the vacuum suction cup, the positioning table is installed with five downward pressure fixing cylinders, a loading and unloading driving assembly is provided at the bottom of the positioning table, and the two sides of the telescopic positioning cylinder are respectively fixedly connected with the loading and unloading table and the connecting table, the tops of the loading and unloading table and the connecting table are respectively provided with a loading push plate and a unloading push plate, and two supporting assemblies are provided inside the loading push plate and the unloading push plate.

[0008] By adopting the above technical scheme, by arranging the downward pressure fixing cylinder, the side push clamping cylinder, the vacuum suction cup and the telescopic positioning cylinder, the downward pressure, side push and vacuum adsorption are integrated into one, and the fixation of the workpiece is more reliable; by arranging the loading and unloading drive components, the support components, the loading and unloading push plates, the unloading and unloading tables and the connecting tables, the workpiece can be loaded and unloaded after processing, and the height of the vacuum suction cup can be adjusted synchronously.

[0009] The present invention is further configured as follows: the loading and unloading drive assembly includes a toothed plate, the toothed plate is meshed with a gear, a motor is installed at the bottom of the positioning platform through a bracket, and the output end of the motor is installed with the gear through a coupling.

[0010] The above technical solution is adopted to drive the movement of the loading and unloading push plates through the setting of the loading and unloading drive components;

[0011] The rotation direction of the motor can be controlled by a controller (the controller controls the motor output end to rotate in different directions, which is the current existing technology and will not be elaborated here);

[0012] Specifically, first place the workpiece that needs to be processed by CNS on the loading and unloading table;

[0013] Then the motor starts, and its output end rotates clockwise. The clockwise rotation of the motor output end drives the gear to rotate clockwise. The clockwise rotation of the gear drives the gear plate meshing with it to move to one side of the connecting table. The gear plate moves the support rod on the right side to pull the loading push plate to move on the top of the loading and unloading table. After the loading push plate moves to contact the workpiece on the top of the loading and unloading table, it pushes the workpiece to the top of the vacuum suction cup; and until the workpiece is completely in line with the vacuum suction cup, the motor stops rotating;

[0014] Then the three side top clamping cylinders are started, and their output ends push the workpiece sideways to cooperate with the vacuum suction cup to clamp the workpiece. The vacuum suction cup is started to adsorb the workpiece, and the five downward pressing and fixing cylinders are started, and their output ends press the workpiece downward to fix the workpiece;

[0015] Then the CNS processing machine tool processes the workpiece. After the processing is completed, the downward pressing cylinder, the side top clamping cylinder and the vacuum suction cup are reset;

[0016] The motor rotates counterclockwise to drive the tooth plate to reset. After the loading and unloading table is reset, the motor does not stop rotating and continues to drive the tooth plate to move. As the tooth plate moves, the support rod on the left side of the tooth plate will pull the unloading push plate to move, and the unloading push plate moves to contact the workpiece. As the tooth plate continues to move, the processed workpiece will be pushed to the top of the loading and unloading table, making it easier for the processing personnel to take the material.

[0017] The present invention is further configured as follows: the support assembly comprises a support rod, and a spring and a telescopic rod are respectively arranged inside the support rod;

[0018] The bottom end of the telescopic rod is fixedly connected to the support rod, and the spring is sleeved on the surface of the telescopic rod; the bottom end of the spring is fixedly connected to the support rod through a spring fixing piece, and the bottoms of the loading push plate and the unloading push plate are fixedly connected to the spring through a spring fixing piece;

[0019] The bottoms of the loading push plate and the unloading push plate are both fixedly connected to the telescopic rod;

[0020] The bottoms of the loading push plate and the unloading push plate are both rotatably connected with two balls, and the tops of the loading and unloading platforms and the connecting platform are in contact with the balls.

[0021] By adopting the above technical solution, a support assembly is provided to allow the vacuum suction cup to respectively drive the loading and unloading platform and the connecting platform to move when the telescopic positioning cylinder pushes the vacuum suction cup to move up and down, and at the same time, the loading and unloading push plates and the unloading push plates on the top of the loading and unloading platform and the connecting platform can be synchronously followed to rise and fall;

[0022] Specifically, the telescopic positioning cylinder is started, and the output end of the telescopic positioning cylinder is extended to push the vacuum suction cup to move upward, and the vacuum suction cup is fixedly connected to the loading and unloading platform and the connecting platform respectively. When the vacuum suction cup moves upward, the loading and unloading platform and the connecting platform will naturally move with it;

[0023] When the loading and unloading platforms and the connecting platform rise, they will push the loading push plate and unloading push plate on their tops upward respectively, and the loading push plate will pull the output end of the telescopic rod to extend, and at the same time, it will also pull the spring to extend;

[0024] The purpose of extending the output end of the spring is to fix the loading push plate; the extension of the spring will generate a rebound force. When the output end of the telescopic positioning cylinder retracts, the rebound force of the spring can ensure that the loading push plate descends synchronously with the descent of the loading and unloading platform. The above-designed spring and telescopic rod can ensure the stable support of the loading push plate.

[0025] The working principle of the unloading push plate is the same as that of the loading push plate, so I will not go into details here.

[0026] The present invention is further configured as follows: the five downward pressing and fixing cylinders are divided into two groups, one group of three downward pressing and fixing cylinders is located on one side of the telescopic positioning cylinder, and the other group of two downward pressing and fixing cylinders is located on the other side of the telescopic positioning cylinder.

[0027] By adopting the above technical solution, five downward pressing and fixing cylinders are arranged and divided into two groups, which can press down the tops of both sides of the workpiece from top to bottom respectively, thereby realizing the upper and lower fixation of the workpiece.

[0028] The present invention is further configured as follows: both sides of the tooth plate are fixedly connected to two support rods;

[0029] The width of the tooth plate is the same as the length of the gear.

[0030] By adopting the above technical solution, the two sides of the tooth plate are respectively connected to the two support rods. When the tooth plate is driven to move by the rotation of the gear, the tooth plate can synchronously drive the two support rods on both sides of it to move, so that the two support rods on both sides of the tooth plate can respectively drive the loading push plate and the unloading push plate to move.

[0031] The present invention is further configured as follows: two guide grooves are provided inside the loading and unloading platform and the connecting platform, and the inside of the guide grooves is slidably connected to the support rods.

[0032] By adopting the above technical solution, through the setting of the guide groove, the support rod can move back and forth inside the loading and unloading platform and the telescopic positioning cylinder, so that the two support rods inside the loading and unloading platform and the connecting platform can respectively drive the loading push plate and the unloading push plate to move.

[0033] The present invention is further configured as follows: both sides of the tooth plate are provided with slide grooves, four fixed blocks are installed at the bottom of the positioning platform, and a sliding block slidably connected to the fixed block is fixedly connected to one side of the fixed block close to the tooth plate;

[0034] The bottom of the positioning platform is also fixedly connected with four fixing feet.

[0035] By adopting the above technical solution, the tooth plate is provided with a front-rear linear guide through the arrangement of the slide groove, the fixed block and the sliding block, thereby ensuring the stability of the tooth plate during reciprocating motion.

[0036] The present invention is further configured as follows: a groove is provided on the top of the support rod, and the spring and the telescopic rod are both located inside the groove.

[0037] By adopting the above technical solution, the groove is provided to store the telescopic rod and the spring.

[0038] In summary, the present invention has the following beneficial effects:

[0039] The present invention can realize the positioning of the workpiece by arranging a vacuum suction cup to adsorb the workpiece, and can realize the side push clamping of the workpiece by cooperating with the vacuum suction cup through three side top clamping cylinders, and can realize the downward clamping and fixing of the workpiece by arranging five downward pressing fixing cylinders divided into two groups to cooperate with the vacuum suction cup for downward support; the positioning device adopts downward pressing, side pushing and vacuum adsorption, and the three clampings are more stable for the positioning of the workpiece. By arranging the loading and unloading driving components to drive the four supporting components to drive the loading push plate and the unloading push plate to reciprocate respectively, the loading of the workpiece before processing and the active unloading after processing can be realized. The spring and telescopic rod of the supporting component can assist the loading push plate and the unloading push plate to synchronously follow the height of the vacuum suction cup, and the effect of the ball will not affect the sliding of the loading push plate and the unloading push plate on the loading and unloading table and the connecting table, and will not affect the loading and unloading of the workpiece by the loading push plate and the unloading push plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of the present invention;

[0041] Figure 2 Schematic diagram of the loading and unloading drive assembly of the present invention;

[0042] Figure 3 It is a side sectional view of the loading and unloading platform of the present invention;

[0043] Figure 4 The present invention Figure 3 A partial enlarged view of the middle part;

[0044] Figure 5 is a bottom view of the positioning platform of the present invention;

[0045] Figure 6 It is a schematic diagram of the telescopic positioning cylinder of the present invention.

[0046] Reference numerals: 1. positioning table; 2. telescopic positioning cylinder; 3. vacuum suction cup; 4. side top clamping cylinder; 5. downward pressing fixing cylinder;

[0047] 6. Loading and unloading drive assembly; 61. tooth plate; 62. gear; 63. motor;

[0048] 7. Loading and unloading platform; 8. Loading push plate; 9. Unloading push plate;

[0049] 10. Support assembly; 101. Support rod; 102. Spring; 103. Telescopic rod; 104. Ball;

[0050] 11. Connecting platform; 12. Guide groove; 13. Slide groove; 14. Fixed block; 15. Sliding block; 16. Fixed foot; 17. Groove. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0052] Embodiment 1:

[0053] refer to Figure 1-Figure 6 A CNC machining positioning device comprises a positioning table 1, a telescopic positioning cylinder 2 is installed on the top of the positioning table 1, a vacuum suction cup 3 is installed on the output end of the telescopic positioning cylinder 2, three side top clamping cylinders 4 installed with the positioning table 1 are respectively arranged on one side of the vacuum suction cup 3, five downward pressing fixing cylinders 5 are installed on the positioning table 1, a loading and unloading driving assembly 6 is arranged at the bottom of the positioning table 1, loading and unloading tables 7 and connecting tables 11 are respectively fixedly connected on both sides of the telescopic positioning cylinder 2, and loading and unloading tables 7 and connecting tables 11 are respectively arranged on the top The push plate 8 and the unloading push plate 9, the loading push plate 8 and the unloading push plate 9 are both provided with two support components 10 inside; the vacuum suction cup 3 can be used to adsorb the workpiece to achieve the positioning of the workpiece, and the three side clamping cylinders 4 can cooperate with the vacuum suction cup 3 to achieve the side push clamping of the workpiece, and then by setting five downward pressing and fixing cylinders 5 divided into two groups to cooperate with the vacuum suction cup 3 to support the bottom, the downward pressing and clamping of the workpiece can be achieved; the positioning device adopts downward pressing, side pushing, and vacuum adsorption, and the three clampings are more stable for the positioning of the workpiece. By setting the loading and unloading drive component 6 to drive the four support components 10 to drive the loading push plate 8 and the unloading push plate 9 to reciprocate respectively, the loading of the workpiece before processing and the active unloading after processing can be achieved. The spring 102 and telescopic rod 103 of the support assembly 10 can assist the loading push plate 8 and the unloading push plate 9 to synchronously follow the height of the vacuum suction cup 3. The action of the ball 104 will not affect the sliding of the loading push plate 8 and the unloading push plate 9 on the loading and unloading platform 7 and the connecting platform 11, and will not affect the loading and unloading of the workpiece by the loading push plate 8 and the unloading push plate 9.

[0054] Furthermore, the loading and unloading drive assembly 6 includes a tooth plate 61, the tooth plate 61 is meshed with a gear 62, a motor 63 is installed at the bottom of the positioning platform 1 through a bracket, and the output end of the motor 63 is installed with the gear 62 through a coupling. Through the setting of the loading and unloading drive assembly 6, it is used to drive the movement of the loading push plate 8 and the unloading push plate 9;

[0055] The rotation direction of the motor 63 can be controlled by a controller (the controller controlling the output end of the motor 63 to rotate in different directions is the current existing technology and will not be elaborated here); specifically, first place the workpiece to be CNS processed on the loading and unloading table 7; then the motor 63 is started, and its output end rotates clockwise, and the clockwise rotation of the output end of the motor 63 will drive the gear 62 to rotate clockwise, and the clockwise rotation of the gear 62 will drive the gear plate 61 meshing with it to move to one side of the connecting platform 11, and the gear plate 61 moves the support rod 101 on its right side to pull the loading push plate 8 to move on the top of the loading and unloading table 7. After the loading push plate 8 moves to contact the workpiece on the top of the loading and unloading table 7, it will push the workpiece to the top of the vacuum suction cup 3; and until the workpiece is completely aligned with the vacuum suction cup 3, the motor 63 stops rotating; after three The side top clamping cylinders 4 are started, and their output ends push the workpiece sideways to cooperate with the vacuum suction cup 3 to clamp the workpiece. The vacuum suction cup 3 is started to adsorb the workpiece, and the five downward pressing and fixing cylinders 5 are started, and their output ends press the workpiece downward to fix the workpiece; then the CNS processing machine tool processes the workpiece, and after the processing is completed, the downward pressing and fixing cylinder 5, the side top clamping cylinder 4, and the vacuum suction cup 3 are reset; the motor 63 rotates counterclockwise to drive the tooth plate 61 to reset, and after the loading and unloading platform 7 is reset, the motor 63 does not stop rotating and continues to drive the tooth plate 61 to move. As the tooth plate 61 moves, the support rod 101 on the left side of the tooth plate 61 will pull the unloading push plate 9 to move, and the unloading push plate 9 moves to contact the workpiece. As the tooth plate 61 continues to move, the processed workpiece will be pushed to the top of the loading and unloading platform 7, which is convenient for the processing personnel to take the material (see Figure 2 ).

[0056] Furthermore, the support assembly 10 includes a support rod 101, and a spring 102 and a telescopic rod 103 are respectively arranged inside the support rod 101; the bottom end of the telescopic rod 103 is fixedly connected to the support rod 101, and the spring 102 is sleeved on the surface of the telescopic rod 103; the bottom end of the spring 102 is fixedly connected to the support rod 101 through a spring fixing member, and the bottoms of the loading push plate 8 and the unloading push plate 9 are fixedly connected to the spring 102 through a spring fixing member; the bottoms of the loading push plate 8 and the unloading push plate 9 are fixedly connected to the telescopic rod 103 is fixedly connected; the bottom of the loading and unloading push plate 8 and the unloading push plate 9 are both rotatably connected with two ball bearings 104, and the tops of the loading and unloading platforms 7 and the connecting platform 11 are in contact with the ball bearings 104. The support assembly 10 is used to allow the vacuum suction cup 3 to respectively drive the loading and unloading platforms 7 and the connecting platform 11 to move when the telescopic positioning cylinder 2 pushes the vacuum suction cup 3 to move up and down, and at the same time, the loading and unloading push plate 8 and the unloading push plate 9 on the top of the loading and unloading platforms 7 and the connecting platform 11 can be synchronously followed to rise and fall; specifically, by extending The retracting positioning cylinder 2 is started, and the output end of the telescopic positioning cylinder 2 extends to push the vacuum suction cup 3 to move upward, and the vacuum suction cup 3 is fixedly connected to the loading and unloading platform 7 and the connecting platform 11 respectively. When the vacuum suction cup 3 moves upward, the loading and unloading platform 7 and the connecting platform 11 will naturally move with it; when the loading and unloading platform 7 and the connecting platform 11 rise, the loading and unloading platform 7 and the connecting platform 11 will respectively push the loading push plate 8 and the unloading push plate 9 on their tops upward, and the loading push plate 8 will pull the output end of the telescopic rod 103 to extend upward, and at the same time When the output end of the telescopic positioning cylinder 2 retracts, the rebound force of the spring 102 can ensure that the loading push plate 8 descends synchronously with the descent of the loading and unloading platform 7. The above-mentioned design of the spring 102 and the telescopic rod 103 can ensure the stable support of the loading push plate 8; the working principle of the unloading push plate 9 is the same as that of the loading push plate 8, which will not be elaborated here.

[0057] Furthermore, the five downward pressing and fixing cylinders 5 are divided into two groups, one group of three downward pressing and fixing cylinders 5 is located on one side of the telescopic positioning cylinder 2, and the other group of two downward pressing and fixing cylinders 5 is located on the other side of the telescopic positioning cylinder 2. By setting the five downward pressing and fixing cylinders 5, the five downward pressing and fixing cylinders 5 are divided into two groups, which can press down the tops of both sides of the workpiece from top to bottom respectively, thereby realizing the upper and lower fixation of the workpiece.

[0058] Furthermore, both sides of the tooth plate 61 are fixedly connected to two support rods 101;

[0059] The width of the tooth plate 61 is the same as the length of the gear 62. The two sides of the tooth plate 61 are respectively connected to two support rods 101. When the tooth plate 61 is driven to move by the rotation of the gear 62, the tooth plate 61 can synchronously drive the two support rods 101 on both sides thereof to move, so that the two support rods 101 on both sides of the tooth plate 61 can respectively drive the loading push plate 8 and the unloading push plate 9 to move.

[0060] Furthermore, two guide grooves 12 are provided inside the loading and unloading platform 7 and the connecting platform 11, and the inside of the guide grooves 12 is slidably connected to the support rod 101. Through the setting of the guide grooves 12, it is convenient for the support rod 101 to reciprocate inside the loading and unloading platform 7 and the telescopic positioning cylinder 2, thereby facilitating the two support rods 101 inside the loading and unloading platform 7 and the connecting platform 11 to respectively drive the loading push plate 8 and the unloading push plate 9 to move.

[0061] Furthermore, both sides of the tooth plate 61 are provided with slide grooves 13, and four fixing blocks 14 are installed at the bottom of the positioning platform 1. A slider 15 slidably connected to the fixing block 14 is fixedly connected to one side of the fixing block 14 close to the tooth plate 61;

[0062] Four fixed feet 16 are also fixedly connected to the bottom of the positioning platform 1. Through the arrangement of the slide groove 13, the fixed block 14 and the slider 15, the tooth plate 61 is guided in a front-to-back linear manner to ensure the stability of the tooth plate 61 during reciprocating motion.

[0063] Furthermore, a groove 17 is provided at the top of the support rod 101 , and the spring 102 and the telescopic rod 103 are both located inside the groove 17 . The groove 17 is provided for accommodating the telescopic rod 103 and the spring 102 .

[0064] Working principle:

[0065] When in use, the groove 17 and the CNS processing lathe are installed, and the cylinder, motor and other devices that need to be controlled by the controller are connected to the controller.

[0066] After that, the workpiece is placed on the top of the loading and unloading platform 7, and the controller controls the motor 63 to start and control its output end to rotate clockwise, and the output end of the motor 63 drives the gear 62 to rotate clockwise, and the gear 62 drives the tooth plate 61 to move to the left. When the tooth plate 61 moves, the support assembly 10 on its right side will drive the loading push plate 8 on the top to start moving to the left. By moving the loading push plate 8 and contacting the workpiece, the loading push plate 8 will be able to push the workpiece to the top of the vacuum suction cup 3 into place. After the workpiece is in place, the motor 63 stops working.

[0067] The telescopic positioning cylinder 2 is started to vacuum adsorb the workpiece, and the three side clamping cylinders 4 are started and their output ends cooperate with the vacuum suction cup 3 from the side to push and clamp the workpiece; the five downward pressing and fixing cylinders 5 are started and they cooperate with the vacuum suction cup 3 to press the workpiece downward from top to bottom to fix the workpiece.

[0068] After that, the CNC machining lathe processes the workpiece, and the processing is completed.

[0069] The controller controls the output end of the motor 63 to rotate counterclockwise, so that the motor 63 drives the gear 62 to drive the tooth plate 61 to reset. After the loading and unloading platform 7 is reset, the motor 63 does not stop rotating and continues to drive the tooth plate 61 to move. As the tooth plate 61 moves, the support rod 101 on the left side of the tooth plate 61 will pull the unloading push plate 9 to move, and the unloading push plate 9 moves to contact the workpiece and push the workpiece to move on the vacuum suction cup 3. As the tooth plate 61 continues to move, the processed workpiece will be pushed to the top of the loading and unloading platform 7 by the vacuum suction cup 3 by the unloading push plate 9, and the personnel can take the material.

[0070] If the height of the vacuum suction cup 3 needs to be adjusted, the output end of the telescopic positioning cylinder 2 is activated to push the vacuum suction cup 3 up. Since the vacuum suction cup 3 is fixedly connected to the loading and unloading platform 7 and the connecting platform 11 respectively, the loading and unloading platform 7 and the connecting platform 11 will rise synchronously.

[0071] As the loading and unloading platform 7 and the connecting platform 11 rise, the loading and unloading platform 7 will push up the loading push plate 8, and the loading push plate 8 will pull the output end of the telescopic rod 103 to extend, pulling the spring 102 to extend out of the inside of the groove 17;

[0072] At the same time, as the connection platform 11 rises, the connection platform 11 pushes up the unloading push plate 9, and as the unloading push plate 9 rises, the unloading push plate 9 pulls the output end of the telescopic rod 103 at its bottom to extend, pulling the spring 102 at its bottom to extend out of the inside of the groove 17. The support rod 101 and the loading push plate 8 are connected by the telescopic rod 103, and the support rod 101 and the unloading push plate 9 are connected by the telescopic rod 103, so that the stability of the loading push plate 8 and the unloading push plate 9 can be ensured;

[0073] Under the rolling action of the ball 104, the loading push plate 8 and the unloading push plate 9 are pushed on the loading and unloading platform 7 and the connecting platform 11 and will not be affected by the position change.

[0074] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A CNC machining positioning device, comprising a positioning table (1), characterized in that: A telescopic positioning cylinder (2) is installed on the top of the positioning platform (1), and a vacuum suction cup (3) is installed on the output end of the telescopic positioning cylinder (2). Three side clamping cylinders (4) installed with the positioning platform (1) are respectively provided on one side of the vacuum suction cup (3). Five downward pressing fixing cylinders (5) are installed on the positioning platform (1). A loading and unloading driving assembly (6) is provided at the bottom of the positioning platform (1). The two sides of the telescopic positioning cylinder (2) are respectively fixedly connected with a loading and unloading platform (7) and a connecting platform (11). The tops of the loading and unloading platforms (7) and the connecting platform (11) are respectively provided with a loading push plate (8) and a unloading push plate (9). Two supporting assemblies (10) are provided inside the loading and unloading push plate (8) and the unloading push plate (9).

2. A CNC machining positioning device according to claim 1, characterized in that: The loading and unloading drive assembly (6) comprises a tooth plate (61), the tooth plate (61) is meshed with a gear (62), a motor (63) is installed at the bottom of the positioning platform (1) through a bracket, and the output end of the motor (63) is installed with the gear (62) through a coupling.

3. A CNC machining positioning device according to claim 2, characterized in that: The support assembly (10) comprises a support rod (101), wherein a spring (102) and a telescopic rod (103) are respectively arranged inside the support rod (101); The bottom end of the telescopic rod (103) is fixedly connected to the support rod (101), and the spring (102) is sleeved on the surface of the telescopic rod (103); the bottom end of the spring (102) is fixedly connected to the support rod (101) via a spring fixing member, and the bottoms of the loading push plate (8) and the unloading push plate (9) are fixedly connected to the spring (102) via a spring fixing member; The bottoms of the loading push plate (8) and the unloading push plate (9) are both fixedly connected to the telescopic rod (103); The bottoms of the loading push plate (8) and the unloading push plate (9) are both rotatably connected to two balls (104), and the tops of the loading and unloading platforms (7) and the connecting platform (11) are in contact with the balls (104).

4. A CNC machining positioning device according to claim 1, characterized in that: The five downward pressing and fixing cylinders (5) are divided into two groups, one group of three downward pressing and fixing cylinders (5) is located on one side of the telescopic positioning cylinder (2), and the other group of two downward pressing and fixing cylinders (5) is located on the other side of the telescopic positioning cylinder (2).

5. A CNC machining positioning device according to claim 3, characterized in that: Both sides of the tooth plate (61) are fixedly connected to two support rods (101); The width of the tooth plate (61) is the same as the length of the gear (62).

6. A CNC machining positioning device according to claim 1, characterized in that: The loading and unloading platform (7) and the connecting platform (11) are each provided with two guide grooves (12), and the interior of the guide grooves (12) is slidably connected to the support rod (101).

7. A CNC machining positioning device according to claim 2, characterized in that: Slide grooves (13) are provided on both sides of the tooth plate (61); four fixed blocks (14) are installed at the bottom of the positioning platform (1); a sliding block (15) slidably connected to the fixed block (14) is fixedly connected to one side of the fixed block (14) close to the tooth plate (61); Four fixed feet (16) are also fixedly connected to the bottom of the positioning platform (1).

8. A CNC machining positioning device according to claim 3, characterized in that: A groove (17) is provided at the top of the support rod (101), and the spring (102) and the telescopic rod (103) are both located inside the groove (17).

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