CNC built-in clamping automatic feeding device

Abstract

The invention provides a CNC built-in clamping automatic feeding device which comprises a CNC machine table, the CNC machine table is provided with a CNC main shaft, a tool changing mechanical arm and a tool magazine, a plurality of machining tools are stored in the tool magazine, and the CNC built-in clamping automatic feeding device is characterized in that a material taking tool handle structure is arranged on the tool changing mechanical arm; the CNC machine table is provided with a clamping clamp structure and an automatic feeding bin structure located on one side of the clamping clamp structure. The automatic feeding bin structure is used for storing workpieces, the clamping fixture structure is used for fixing the workpieces during machining, and the clamping fixture structure further drives the workpieces to rotate during machining of the workpieces, so that machining of the front faces and the back faces of the workpieces is achieved. Through cooperative work of the automatic feeding bin structure, the clamping fixture structure and the material taking cutter handle structure, automatic feeding and automatic rotating reverse face machining of the CNC machine tool are achieved, manual intervention is reduced, the production efficiency is improved, personnel can consider multiple CNC machine tools, the requirement for operators is reduced, and therefore the labor cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of CNC machining technology, and more specifically, to an automatic feeding device for in-machine clamping in a CNC machine. Background Technology

[0002] With the continuous innovation of technology, more and more electronic products need to use thin and light precision parts, such as screen hinges and hinges of electronic products such as mobile phones, laptops, servers, and VR / AR. These parts are relatively thin and irregularly shaped, with high precision requirements and large demand, and rely on CNC machining. Currently, most CNC machining processes involve external clamping of the material, placing it inside the CNC machine for processing, and then manually removing and re-clamping it after machining. This not only requires a large number of CNC operators but also results in low efficiency due to frequent operations. Therefore, we have proposed an improved version: an automatic feeding device for in-machine clamping of CNC machines. Summary of the Invention

[0003] This invention provides an automatic feeding device for CNC machine tool clamping, including a CNC machine base. The CNC machine base has a CNC spindle, a tool changer, and a tool magazine. The tool magazine stores a plurality of machining tools. The device is characterized in that the tool changer is equipped with a tool holder structure, and the CNC machine base is equipped with a clamping fixture structure and an automatic feeding bin structure located on one side of the clamping fixture structure. The automatic feeding bin structure is used to store workpieces, and the clamping fixture structure is used to fix the workpieces during machining. Furthermore, the clamping fixture structure also drives the workpieces to rotate during machining to achieve machining of both the front and back sides of the workpieces.

[0004] As a preferred technical solution of this application, the material handling shank structure includes a connecting block installed on the tool changing robot arm, the connecting block is connected to a tool magazine end, a machining tool is also provided on the CNC spindle, and a pneumatic gripper is provided on the tool magazine end. The pneumatic gripper moves under the drive of the CNC spindle to pick up and put down workpieces.

[0005] As a preferred technical solution of this application, the clamping fixture structure includes a rotating shaft mounted on a CNC machine tool. The rotating shaft has two rotating ends, and each of the two rotating ends is connected to a first connecting plate. A first support plate is connected between the two first connecting plates, and a plurality of limiting parts are provided on the first support plate.

[0006] As a preferred technical solution of this application, the limiting part includes a positioning block installed on the first support plate. The positioning block is provided with a plurality of limiting protrusions, and a workpiece limiting area is formed between the plurality of limiting protrusions.

[0007] As a preferred technical solution of this application, the positioning block is provided with a plurality of first machining holes, which are located in the workpiece limiting area; The limiting part also includes two second cylinders mounted on the first support plate. The two second cylinders are located on both sides of the positioning block, and the piston rods of the two second cylinders are connected to the second push block. A first cylinder is provided on one side of the positioning block, and the piston rod of the first cylinder is connected to a first push block.

[0008] As a preferred technical solution of this application, the limiting part further includes an upper limit member disposed on the first support plate. The upper limit member includes two first driving members mounted on the first support plate, and an upper limit plate is connected between the two first driving members. A plurality of second processing holes are disposed through the upper limit plate.

[0009] As a preferred technical solution of this application, the automatic feeding bin structure includes a base plate installed on a CNC machine tool. A first upright plate and a second driving component located on one side of the first upright plate are installed on the top of the base plate. The second driving component is connected to a support box, and a workpiece tray storage space is left between the support box and the first upright plate. A third driving component is provided on the base plate, and two support arms are connected to the third driving component. A waterproof plate is connected between the tops of the two support arms. The third driving component is used to drive the waterproof plate to move so as to cover the top of the workpiece tray storage space during processing.

[0010] As a preferred technical solution of this application, the third driving component includes two first rodless cylinders mounted on the base plate, and the two support arms are respectively connected to the two first rodless cylinders; The second driving component includes a second support plate and a cylinder mounting base mounted on the top of the base plate. The cylinder mounting base is connected to a fifth cylinder, and the support box is connected between the fifth cylinder and the second support plate.

[0011] As a preferred technical solution of this application, the support box includes two protective boxes installed on the top of the second support plate. A second upright plate, a top plate, and a back plate are connected between the two protective boxes. A fourth connecting plate is installed on the inner side of the back plate, and the inner side of the fourth connecting plate is connected to the fifth cylinder.

[0012] As a preferred technical solution of this application, two second rodless cylinders are installed on the second upright plate. Each of the two second rodless cylinders is connected to a lifting frame, and both lifting frames pass through the second upright plate and extend into the workpiece pallet storage space and are connected to a pallet support plate. A third rodless cylinder is installed at the bottom of the top plate, and a push plate is provided on the third rodless cylinder. The movement trajectory of the push plate is located in the workpiece pallet storage space.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: This application achieves automatic feeding and automatic rotary reverse machining of CNC machine tools through the coordinated operation of the automatic feeding bin structure, clamping fixture structure and material handling device structure. This reduces manual intervention, improves production efficiency, allows personnel to manage multiple CNC machine tools, reduces the need for operators, and thus lowers labor costs. Attached Figure Description

[0014] Figure 1 A schematic diagram of the automatic feeding device for CNC machine clamping provided in this application; Figure 2 A partial structural schematic diagram of the automatic feeding device for CNC machine clamping provided in this application; Figure 3 A schematic diagram of the material handling tool holder structure and the CNC spindle provided in this application; Figure 4 This is a schematic diagram of the material handling tool holder structure provided in this application; Figure 5 A schematic diagram of the connecting frame provided in this application; Figure 6 This is a schematic diagram of the clamping fixture structure provided in this application; Figure 7 A partial top view of the first support plate provided in this application; Figure 8 A partial bottom view of the first support plate provided for this application; Figure 9 Schematic diagrams of the first and second push blocks provided in this application; Figure 10 A three-dimensional structural diagram of the automatic feeding bin structure provided in this application; Figure 11 A bottom view of the automatic feeding bin structure provided in this application; Figure 12 A partial structural diagram of the automatic feeding bin structure provided in this application; Figure 13 A structural schematic diagram of the third rodless cylinder and push plate provided in this application; Figure 14 This is a structural schematic diagram of the pallet support plate provided in this application; Figure 15 A structural schematic diagram of the second support plate provided in this application; Figure 16 A schematic diagram of the backflow prevention component provided in this application; Figure 17 A schematic diagram of the push plate provided in this application.

[0015] The image shows: 1. CNC machine base; 101. CNC spindle; 102. Tool magazine; 2. Tool holder structure; 201. Connecting block; 202. Tool magazine end; 203. Pneumatic gripper; 204. Connecting frame; 205. T-bar; 206. Protective pad; 3. Clamping fixture structure; 301. Rotary shaft; 302. First connecting plate; 303. First support plate; 304. First cylinder; 3041. First push block; 305. Positioning block; 3051. First machining hole; 3052. Limiting protrusion; 306. Second cylinder; 3061. Second push block; 307. Third cylinder; 308. Upper limit plate; 3081. Second machining hole; 3082. Limiting bolt; 309. Second connecting plate; 311. Third connecting plate; 312. U-shaped plate; 313. First slide rail; 314. Third spring; 315. 4. Automatic feeding hopper structure; 401. Base plate; 402. First vertical plate; 403. Baffle bar; 404. Side plate; 405. Divider plate; 406. Backlash prevention assembly; 4061. Mounting holes; 4062. Backlash prevention plate; 4063. Side opening; 4064. Support base; 4065. Fourth cylinder; 4066. Conical rod; 407. First rodless cylinder; 4071. Support arm; 40 72. Waterproof membrane; 408. Second support plate; 409. Fifth cylinder; 4091. Cylinder mounting base; 410. Fourth connecting plate; 411. Protective box; 412. Second rodless cylinder; 413. Lifting frame; 4131. Pallet support plate; 414. Second slide rail; 4141. Second slider; 415. Second upright plate; 416. Third rodless cylinder; 4161. Push plate; 5. Machining tool. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0017] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] Example 1, please refer to Figures 1-17The system includes a CNC machine tool 1, which has a CNC spindle 101, a tool changer, and a tool magazine 102. The tool magazine 102 stores several machining tools 5. The tool changer is equipped with a tool holder structure 2. The CNC machine tool 1 is equipped with a clamping fixture structure 3 and an automatic feeder structure 4 located on one side of the clamping fixture structure 3. The automatic feeder structure 4 is used to store workpieces, and the clamping fixture structure 3 is used to fix the workpieces during machining. The clamping fixture structure 3 also drives the workpieces to rotate during machining to achieve machining of both the front and back sides of the workpieces. The tool changer is mounted on the CNC spindle 101. The material handling structure 2 includes a connecting block 201 mounted on the tool changing robot arm. The connecting block 201 is connected to the tool magazine end 202. A machining tool 5 is also set on the CNC spindle 101. A pneumatic gripper 203 is set on the tool magazine end 202. The pneumatic gripper 203 moves under the drive of the CNC spindle 101 and the tool changing robot arm to pick up and put down workpieces. By relying on the original CNC spindle 101 and the tool changing robot arm to pick up and put down workpieces during the machining process, it can not only improve automation, but also eliminate the need to configure an additional robot arm for material handling. This is because traditional machining devices often require additional robot arms to achieve automated material handling, which increases costs.

[0020] A connecting frame 204 is mounted on the pneumatic gripper 203, and an auxiliary component is provided on the connecting frame 204. The auxiliary component includes a T-shaped rod 205, which is inserted into the connecting frame 204. A protective pad 206 is threaded to the bottom end of the T-shaped rod 205. A first spring is sleeved on the outer surface of the T-shaped rod 205, and the two ends of the first spring abut against the connecting frame 204 and the protective pad 206, respectively. The bottom of the protective pad 206 is lower than the bottom of the pneumatic gripper 203 in its natural state. When the T-shaped rod 205 grips the workpiece, the protective pad 206 comes into contact with the workpiece and rises, causing the first spring to compress. When the T-shaped rod 205 releases the workpiece, the force of the first spring presses the protective pad 206 onto the workpiece through the T-shaped rod 205, thereby reducing the workpiece displacement during the release process.

[0021] The pneumatic gripper 203 is used to pick up and put down workpieces, and the protective pad 206 assists the T-shaped rod 205 in releasing the workpiece under the action of the T-shaped rod 205 and the first spring.

[0022] The pneumatic gripper 203 and auxiliary parts are in two quantities to increase the number of gripping points on the workpiece and improve stability.

[0023] Example 2 further optimizes the automatic feeding device for CNC machine clamping provided in Example 1. Specifically, as follows: Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the clamping fixture structure 3 includes a rotary shaft 301 mounted on the CNC machine tool 1. The rotary shaft 301 has two rotating ends, and each of the two rotating ends is connected to a first connecting plate 302. A first support plate 303 is connected between the two first connecting plates 302. The first support plate 303 is provided with several limiting parts. In the prior art, the fixing structure for workpiece processing is relatively fixed, which often requires manual adjustment of the workpiece position when processing the front and back of the workpiece. However, in this application, the rotary shaft 301 drives the first connecting plate 302 and the first support plate 303 to rotate, so that after the workpiece is fixed on the limiting parts, there is no need to manually adjust the workpiece, thereby improving processing efficiency.

[0024] The limiting part includes a positioning block 305 installed on the first support plate 303. The positioning block 305 is provided with a plurality of limiting protrusions 3052, and the plurality of limiting protrusions 3052 form a workpiece limiting area to achieve the limiting of the workpiece.

[0025] The positioning block 305 has several first machining holes 3051 through it. The first machining holes 3051 are located in the workpiece limiting area and are used to provide the workpiece for the operation of the machining tool 5 when machining the back of the workpiece.

[0026] The limiting part also includes two second cylinders 306 mounted on the first support plate 303. The two second cylinders 306 are located on both sides of the positioning block 305. The piston rods of the two second cylinders 306 are connected to the second push block 3061. The second cylinders 306 are used to drive the second push block 3061 to move so as to fix the end of the workpiece through the second push block 3061.

[0027] A first cylinder 304 is provided on one side of the positioning block 305. The piston rod of the first cylinder 304 is connected to a first push block 3041. The first cylinder 304 is used to drive the first push block 3041 to move, and the first push block 3041 presses against the workpiece to fix the workpiece.

[0028] The limiting part also includes an upper limit member disposed on the first support plate 303. The upper limit member includes two first driving members mounted on the first support plate 303. An upper limit plate 308 is connected between the two first driving members. A plurality of second machining holes 3081 are provided through the upper limit plate 308. The first driving members are used to drive the upper limit plate 308 to move. The upper limit plate 308 is used to press against the top of the workpiece. The second machining holes 3081 are used to provide the necessary space for the machining of the machining tool 5.

[0029] The first driving component includes two third cylinders 307 mounted on the first support plate 303. The piston rods of the two third cylinders 307 are connected to third connecting plates 311. The two third connecting plates 311 are connected to U-shaped plates 312. The two U-shaped plates 312 are slidably connected to second connecting plates 309. The two second connecting plates 309 are respectively fixedly mounted on both sides of the upper limit plate 308. A third spring 314 is provided between the second connecting plates 309 and the U-shaped plates 312. The third cylinders 307 can drive the upper limit plate 308 to move through the third connecting plates 311, U-shaped plates 312 and second connecting plates 309.

[0030] The bottom of the U-shaped plate 312 is connected to a first slider, the first slider is connected to a first slide rail 313, and the first slide rail 313 is mounted on the first support plate 303.

[0031] The upper limit plate 308 is also provided with a limit groove, and the first support plate 303 is equipped with a limit bolt 3082 corresponding to the limit groove. The limit bolt 3082 and the limit groove cooperate with each other to limit the upper limit plate 308.

[0032] A baffle is installed on the top of the U-shaped plate 312, and the baffle is used to limit the second connecting plate 309 to reduce the possibility of the second connecting plate 309 detaching from the U-shaped plate 312.

[0033] The first support plate 303 is also equipped with an air knife 315, which is located on one side of the positioning block 305. During CNC machining, the positioning block 305 can blow away cutting chips from the workpiece surface or machining area through high-pressure airflow, reducing the accumulation of waste chips and affecting machining accuracy. When used with cutting fluid, the air knife 315 can accelerate the dispersion of excess liquid and help remove chips, keeping the machining surface clean.

[0034] Example 3 further optimizes the automatic feeding device for CNC machine clamping provided in Example 1. Specifically, as follows: Figures 10-17As shown, the automatic feeding bin structure 4 includes a base plate 401 mounted on the CNC machine tool 1. A first upright plate 402 is mounted on the top of the base plate 401, and a second drive component is located on one side of the first upright plate 402. The second drive component is connected to a support box, and a workpiece tray storage space is left between the support box and the first upright plate 402. A third drive component is provided on the base plate 401, and the third drive component is connected to two support arms 4071. A waterproof plate 4072 is connected between the tops of the two support arms 4071. The third drive component is used to drive the waterproof plate 4072 to move, so as to cover the top of the workpiece tray storage space during processing. In the prior art, workpiece loading is mostly done manually, which is inefficient and poses safety hazards. The automatic feeding bin structure 4 set in this application can supply workpieces for CNC machine tool processing, and the waterproof plate 4072 can cover the workpiece tray storage space during processing, which can reduce the entry of cutting fluid into the workpiece tray storage space.

[0035] The third driving component includes two first rodless cylinders 407 mounted on the base plate 401. Two support arms 4071 are respectively connected to the two first rodless cylinders 407. The first rodless cylinders 407 can drive the support arms 4071 to move, and then drive the waterproof plate 4072 to move through the support arms 4071 so that the waterproof plate 4072 can cover the workpiece tray storage space or remove the cover.

[0036] The second driving component includes a second support plate 408 and a cylinder mounting base 4091 mounted on the top of the base plate 401. The cylinder mounting base 4091 is connected to a fifth cylinder 409. The support box is connected between the fifth cylinder 409 and the second support plate 408. The cylinder mounting base 4091 and the fifth cylinder 409 cooperate to adjust the distance between the support box and the first upright plate 402.

[0037] A second slide rail 414 is installed on the base plate 401. A second slider 4141 is slidably connected to the second slide rail 414 and the second slider 4141 is connected to the second support plate 408. The second slide rail 414 and the second slider 4141 cooperate with each other to support and limit the second support plate 408, thereby improving the stability of the second support plate 408 when it moves.

[0038] The support box includes two protective boxes 411 mounted on the top of the second support plate 408. A second vertical plate 415, a top plate, and a back plate are connected between the two protective boxes 411. A fourth connecting plate 410 is installed on the inner side of the back plate. The inner side of the fourth connecting plate 410 is connected to the fifth cylinder 409. The top plate is located between the tops of the two second vertical plates 415.

[0039] Two second rodless cylinders 412 are installed on the second upright plate 415. Each of the two second rodless cylinders 412 is connected to a lifting frame 413. Both lifting frames 413 pass through the second upright plate 415 and extend into the workpiece pallet storage space and are connected to a pallet support plate 4131. The second upright plate 415 has a vertical opening for the lifting frame 413 to pass through and for lifting. The lifting frame 413 and the second rodless cylinder 412 cooperate to drive the pallet support plate 4131 to rise and fall, so as to adjust the height according to the number of workpiece pallets on the pallet support plate 4131.

[0040] A third rodless cylinder 416 is installed at the bottom of the top plate. A push plate 4161 is provided on the third rodless cylinder 416. The moving trajectory of the push plate 4161 is located in the workpiece pallet storage space. The third rodless cylinder 416 can push the push plate 4161 to move, thereby transferring the workpiece pallet between the two pallet support plates 4131.

[0041] A partition plate 405 is installed on the side of the first upright plate 402 near the second upright plate 415. The partition plate 405 divides the workpiece pallet storage space into a first space and a second space. Two pallet support plates 4131 are located in the first space and the second space, respectively. The first space and the second space are used to store workpieces before and after processing, respectively.

[0042] Side plates 404 are installed on both sides of the first upright plate 402 and the second upright plate 415. A stop bar 403 is installed on the top of the side of the first upright plate 402 and the second upright plate 415 that are close to each other. The stop bar 403 is used to limit the top side when the workpiece pallet moves between the first space and the second space.

[0043] Both the first upright plate 402 and the second upright plate 415 are provided with a plurality of anti-return components 406. The anti-return components 406 include mounting holes 4061, which are formed on the first upright plate 402 and the second upright plate 415. A support base 4064 is installed in the mounting hole 4061. An anti-return plate 4062 is hinged to the support base 4064. A second spring is provided between the anti-return plate 4062 and the support base 4064. A side opening 4063 is provided on the anti-return plate 4062. A tapered rod 4066 is inserted into the inner wall of the side opening 4063. The tapered rod 4066 is connected to a fourth cylinder 4065. The fourth cylinder 4065 is installed on the first upright plate 402 and the second upright plate 415 respectively. A moving space is formed between the top of the anti-return plate 4062 and the stop bar 403 for the workpiece pallet to move and be limited, thereby reducing the possibility of the workpiece pallet falling when it moves. The tapered rod 4066 is aligned with the non-center position of the side opening 4063. Therefore, when the tapered rod 4066 moves, the force of the second spring enables the backstop plate 4062 to rotate around the hinge point with the support base 4064, thereby causing the top of the backstop plate 4062 to protrude to support the workpiece tray or retract to not support the tray.

[0044] The usage process of the automatic feeding device for CNC machine clamping provided by this invention is as follows: Figure 3 and Figure 4 The demonstration shows the tool changing process. After the corresponding machining tool 5 is loaded into the CNC spindle 101, the tool changing robot drives the connecting block 201 and the tool magazine end 202 away from the machining tool 5, so that the pneumatic gripper 203 and the connecting frame 204 will not affect the machining tool 5 to process the workpiece. For ease of understanding, this application uses A to represent the workpiece pallet, and it is labeled in the drawing. Figure 10 The space on the right side stores the workpiece and workpiece tray before processing, i.e., the first space. The space on the left side stores the workpiece and workpiece tray after processing, i.e., the second space. Before starting, the first rodless cylinder 407 drives the waterproof plate 4072 to open, lowering the tray support plate 4131 in the second space to the lowest position. The workpiece tray containing the workpiece is stacked on the tray support plate 4131. Then the tray support plate 4131 rises, so that the uppermost workpiece tray reaches the bottom of the stop bar 403. During machining, the CNC spindle 101 drives the tool holder structure 2 to move, causing the pneumatic gripper 203 to reach the automatic feeding bin structure 4. The pneumatic gripper 203 grips the workpiece and moves it to the clamping fixture structure 3. After the workpiece is removed, the waterproof plate 4072 closes, and the pneumatic gripper 203 places the workpiece in the workpiece limiting area at the top of the positioning block 305. Then, the second push block 3061 and the first push block 3041 fix the workpiece, while the upper limit plate 308 moves towards the positioning block 305 and covers the workpiece. The machining tool 5 first faces the workpiece through the second machining hole 3081. The workpiece is processed on one side, and then the rotating shaft 301 drives the first connecting plate 302 and the first support plate 303 to rotate, so as to adjust the position of the first support plate 303 so that the processing tool 5 can process the back of the workpiece from the limiting protrusion 3052. After the processing is completed, the first support plate 303 rotates back to the center, and the upper limit plate 308, the second push block 3061 and the first push block 3041 are reset to release the workpiece from the fixation. The workpiece is taken away by the pneumatic gripper 203 and conveyed to the automatic feeding bin structure 4. The waterproof plate 4072 is opened, the processed workpiece is put back in its original position, and then another workpiece is taken for processing. After the workpiece in the uppermost workpiece tray in the first space is processed, the top of the backstop plate 4062 moves towards the bottom of the workpiece tray to support the bottom of the workpiece tray. Then, the tray support plate 4131 in the second space rises, and the third rodless cylinder 416 drives the push plate 4161 to move, pushing the processed workpiece tray from the first space onto the tray support plate 4131 in the second space. Then, the push plate 4161 resets, and the tray support plate 4131 in the first space rises by the height of one workpiece tray, causing subsequent workpiece trays to rise. Meanwhile, the tray support plate 4131 in the second space descends by the height of one workpiece tray. This process is repeated until all workpieces are processed and then manually removed and unprocessed workpieces are placed in the tray. Before the workpiece pallet moves, the fifth cylinder 409 and the cylinder fixing seat 4091 work together to drive the support box to move towards the first upright plate 402, so that the first upright plate 402 and the second upright plate 415 can clamp the workpiece pallet to maintain the stability of the workpiece pallet. During manual handling, the support box moves away from the first upright plate 402, which increases the operating space between the second upright plate 415 and the first upright plate 402, and releases the clamping and fixing of the workpiece pallet.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. An automatic feeding device for in-machine clamping in a CNC machine, comprising a CNC machine base (1), wherein the CNC machine base (1) has a CNC spindle (101), a tool changer, and a tool magazine (102), wherein the tool magazine (102) stores a plurality of machining tools (5), characterized in that, The tool changing robot arm is equipped with a tool holder structure (2), and the CNC machine base (1) is equipped with a clamping fixture structure (3) and an automatic feeding bin structure (4) located on one side of the clamping fixture structure (3). The automatic feeding bin structure (4) is used to store workpieces, and the clamping fixture structure (3) is used to fix the workpieces during processing. The clamping fixture structure (3) also drives the workpieces to rotate during processing to achieve processing of the front and back sides of the workpieces.

2. The automatic feeding device for CNC machine clamping according to claim 1, characterized in that, The material handling structure (2) includes a connecting block (201) mounted on the tool changing robot arm. The connecting block (201) is connected to a tool magazine end (202). A machining tool (5) is also provided on the CNC spindle (101). A pneumatic gripper (203) is provided on the tool magazine end (202). The pneumatic gripper (203) moves under the drive of the CNC spindle (101) to pick up and put down workpieces.

3. The automatic feeding device for CNC machine clamping according to claim 1, characterized in that, The clamping fixture structure (3) includes a rotating shaft (301) mounted on a CNC machine tool (1). The rotating shaft (301) has two rotating ends, and both rotating ends are connected to a first connecting plate (302). A first support plate (303) is connected between the two first connecting plates (302). A plurality of limiting parts are provided on the first support plate (303).

4. The automatic feeding device for CNC machine clamping according to claim 1, characterized in that, The limiting part includes a positioning block (305) installed on the first support plate (303). The positioning block (305) is provided with a plurality of limiting protrusions (3052), and a workpiece limiting area is formed between the plurality of limiting protrusions (3052).

5. The automatic feeding device for CNC machine clamping according to claim 4, characterized in that, The positioning block (305) has a plurality of first machining holes (3051) through it, and the first machining holes (3051) are located in the workpiece limiting area; The limiting part also includes two second cylinders (306) mounted on the first support plate (303). The two second cylinders (306) are located on both sides of the positioning block (305), and the piston rods of the two second cylinders (306) are connected to the second push block (3061). A first cylinder (304) is provided on one side of the positioning block (305), and the piston rod of the first cylinder (304) is connected to a first push block (3041).

6. The automatic feeding device for CNC machine clamping according to claim 5, characterized in that, The limiting part also includes an upper limit member disposed on the first support plate (303). The upper limit member includes two first driving members mounted on the first support plate (303). An upper limit plate (308) is connected between the two first driving members. A plurality of second processing holes (3081) are provided through the upper limit plate (308).

7. The automatic feeding device for CNC machine clamping according to claim 1, characterized in that, The automatic feeding bin structure (4) includes a base plate (401) installed on a CNC machine tool (1). A first upright plate (402) and a second drive unit located on one side of the first upright plate (402) are installed on the top of the base plate (401). The second drive unit is connected to a support box, and a workpiece tray storage space is left between the support box and the first upright plate (402). A third drive unit is provided on the base plate (401), and the third drive unit is connected to two support arms (4071). A waterproof plate (4072) is connected between the tops of the two support arms (4071). The third drive unit is used to drive the waterproof plate (4072) to move so as to cover the top of the workpiece tray storage space during processing.

8. The automatic feeding device for CNC machine clamping according to claim 7, characterized in that, The third driving component includes two first rodless cylinders (407) mounted on the base plate (401), and the two support arms (4071) are respectively connected to the two first rodless cylinders (407); The second drive component includes a second support plate (408) and a cylinder mounting base (4091) mounted on the top of the base plate (401). The cylinder mounting base (4091) is connected to a fifth cylinder (409), and the support box is connected between the fifth cylinder (409) and the second support plate (408).

9. The automatic feeding device for CNC machine clamping according to claim 8, characterized in that, The support box includes two protective boxes (411) mounted on the top of the second support plate (408). A second upright plate (415), a top plate, and a back plate are connected between the two protective boxes (411). A fourth connecting plate (410) is installed on the inner side of the back plate. The inner side of the fourth connecting plate (410) is connected to the fifth cylinder (409).

10. The automatic feeding device for CNC machine clamping according to claim 9, characterized in that, Two second rodless cylinders (412) are installed on the second upright plate (415). Each of the two second rodless cylinders (412) is connected to a lifting frame (413), and both lifting frames (413) pass through the second upright plate (415) and extend into the workpiece pallet storage space and are connected to a pallet support plate (4131). A third rodless cylinder (416) is installed at the bottom of the top plate, and a push plate (4161) is provided on the third rodless cylinder (416). The moving trajectory of the push plate (4161) is located in the workpiece pallet storage space.

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