Automatic feeding device of lathe

Abstract

The utility model discloses a lathe automatic feeding device which comprises a base, a stock bin mechanism and a clamping mechanism, a limiting seat is installed on the base, a through groove is formed in the limiting seat, the stock bin mechanism is arranged on the limiting seat, the through groove is close to the stock bin mechanism, a feeding air cylinder is installed on the base, and an output shaft of the feeding air cylinder is fixedly connected with a connecting plate. The clamping mechanism comprises a lead screw assembly and two opposite and symmetrical sliding seats, the lead screw assembly is located at one end of the base, the sliding seats are in sliding connection with the lead screw assembly, a clamping area is formed between the two sliding seats, and the lead screw assembly is located at the other end of the base. One end of the through groove is close to the clamping area, one side of the sliding base is rotationally connected with a set of idler wheels, and the idler wheels are located in the clamping area. The automatic feeding device of the lathe is simple in structure and low in purchase and installation cost.

Description

Technical Field

[0001] The utility model relates to the field of numerically controlled lathes, in particular to an automatic feeding device for lathes. Background Art

[0002] CNC lathes have the characteristics of high processing precision and high automation efficiency, and occupy the vast majority of the current mechanical parts processing technology field; most CNC lathes use hollow spindles and hollow automatic clamping chucks. The structure of the above spindle and chuck makes it easy for CNC lathes to clamp and process long rod-shaped workpieces.

[0003] In order to further improve the production efficiency of CNC lathes, most processing workshops usually install loading and unloading robots on the outside of the CNC lathes. Before processing, the loading and unloading robots place the workpiece to be processed into the automatic clamping chuck, and the automatic clamping chuck automatically clamps the workpiece and processes it. After processing, the processed workpiece is removed by the loading and unloading robots to complete a round of processing.

[0004] However, when the above-mentioned loading and unloading robot is installed on a CNC lathe, it takes a lot of time to set the parameters before the loading and unloading robot can be integrated into the production of the CNC lathe; and, due to the high cost of purchasing and subsequent maintenance of the loading and unloading robot, small enterprises are burdened with heavy time and economic costs in equipping the loading and unloading robot, which makes it difficult to promote it. Utility Model Content

[0005] The utility model aims to provide an automatic feeding device for a lathe, which has a simple structure and low purchase and installation cost.

[0006] The technical solution adopted by the automatic feeding device of a lathe disclosed in the utility model is:

[0007] It includes a base, a silo mechanism and a clamping mechanism, a limited seat is installed on the base, a through slot is opened on the limit seat, the silo mechanism is placed on the limited seat, the through slot is close to the silo mechanism, a feeding cylinder is installed on the base, the output shaft of the feeding cylinder is fixedly connected with a connecting plate, a push rod is fixedly connected with the connecting plate, the output shaft and the push rod of the feeding cylinder are both located at the same end of the connecting plate, the push rod is placed in the limited slot, the clamping mechanism includes a screw assembly and two oppositely symmetrical slides, the screw assembly is located at one end of the base, the slide is slidably connected to the screw assembly, a clamping area is formed between the two slides, one end of the through slot is close to the clamping area, a group of rollers are rotatably connected to one side of the slide, and the rollers are located in the clamping area.

[0008] As a preferred solution, two telescopic rods are installed on the base, and both ends of the telescopic rods are fixedly connected to the base and one end of the connecting plate respectively, and the two telescopic rods are respectively located on both sides of the feeding cylinder.

[0009] As a preferred solution, a limiting block is slidably connected to the limiting seat, and the limiting block is located at one side of the through slot.

[0010] As a preferred embodiment, the silo mechanism includes a storage bracket and two oppositely symmetrical material guide plates, the storage bracket is erected on a limit seat, the storage bracket is fixedly connected to the limit seat, the material guide plate is slidably connected to one side of the storage bracket, the two material guide plates are respectively close to the two ends of the storage bracket, a material guide groove is formed between the storage bracket and the material guide plate, a storage box extends from the other side of the storage bracket, and the storage box is connected to the material guide groove.

[0011] As a preferred solution, a cylinder bracket is fixedly connected to the other side of the storage bracket, a connecting rod is extended from the cylinder bracket, one end of the connecting rod is rotatably connected to a limit plate, a limit cylinder is fixedly connected to the cylinder bracket, the output shaft of the limit cylinder is rotatably connected to the limit plate, and the limit plate extends into the storage box.

[0012] As a preferred embodiment, the screw assembly includes a screw support, a motor and a double-threaded screw, the screw support is fixedly connected to one end of the base, the two ends of the double-threaded screw are respectively rotatably connected to the two ends of the screw support, the double-threaded screw and the through groove are perpendicular to each other, the two sections of threads on the double-threaded screw are respectively left-handed threads and right-handed threads, the two sections of threads on the double-threaded screw are respectively close to the two ends of the double-threaded screw, the motor is fixedly connected to the screw support, the output shaft of the motor passes through the screw support and is fixedly connected to one end of the double-threaded screw, and the two slide seats are respectively slidably connected to the two sections of threads.

[0013] The beneficial effects of the automatic feeding device for a lathe disclosed by the utility model are:

[0014] The device is fixedly installed on the end of the hollow spindle of the CNC lathe away from the chuck, and the clamping mechanism is close to the CNC lathe. When loading, the workpiece in the hopper mechanism falls into the through slot, and the output shaft of the loading cylinder pulls the connecting plate close to the base, so that the push rod pushes the workpiece in the through slot through the clamping area of ​​the clamping mechanism into the hollow spindle. After the workpiece passes through the hollow automatic clamping chuck to the length to be processed, the loading cylinder stops running, so that the workpiece remains stationary at the current position, and the automatic clamping chuck runs to clamp the workpiece to complete the loading work, which simplifies the process of arranging the equipment and Moreover, compared with the loading and unloading robot, the structure of this equipment is simpler and the purchase cost is low. After the automatic clamping chuck runs to clamp the workpiece, the two slides slide on the screw assembly and approach each other, so that the rollers on the slides touch the outside of the workpiece, and the two slides form an effect of clamping the workpiece. When the automatic clamping chuck rotates, the rollers can make the workpiece continue to rotate with the automatic clamping chuck when clamped by the two slides. When the workpiece is long, the clamping mechanism can reduce the swing caused by the end of the workpiece away from the automatic clamping chuck during rotation, thereby reducing production safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of an automatic lathe feeding device installed on a numerically controlled lathe.

[0016] Figure 2 The utility model is a structural schematic diagram of an automatic feeding device for a lathe.

[0017] Figure 3 The utility model is a sectional view of a material bin mechanism of an automatic feeding device for a lathe.

[0018] Figure 4 The utility model is a schematic diagram of the structure of a clamping mechanism of an automatic feeding device for a lathe. DETAILED DESCRIPTION

[0019] The present invention is further described and illustrated below in conjunction with specific embodiments and accompanying drawings:

[0020] Please refer to Figure 1 .

[0021] The utility model discloses an automatic lathe feeding device, which is used for automatically feeding a numerical control machine tool 1; it comprises a base 2, a bin mechanism 3 and a clamping mechanism 4;

[0022] Furthermore, the spindle on the CNC machine tool 1 is a hollow spindle, and the chuck on the CNC machine tool 1 is a hollow automatic clamping chuck, and the spindle and the automatic clamping chuck cooperate with the operation of the device;

[0023] Furthermore, a material discharge chute 11 is provided on the CNC machine tool 1, and the material discharge chute 11 runs through the bed of the CNC machine tool 1. One end of the material discharge chute 11 is close to the bottom of the automatic clamping chuck, and the other end of the material discharge chute 11 extends out of the bed of the CNC machine tool 1. When the workpiece 5 is processed, the CNC lathe cuts the workpiece 5 by cutting the tool, and the workpiece 5 falls into the material discharge chute 11 and slides out of the CNC machine tool 1 from the material discharge chute 11, making it convenient for workers to collect the processed workpiece 5.

[0024] Please refer to Figure 1 and Figure 4 .

[0025] A limit seat 21 is fixedly installed on the base 2, a through slot 211 is provided on the limit seat 21, a limit block 212 is slidably connected to the limit seat 21, the limit block 212 is located on one side of the through slot 211, and the limit block 212 slides a certain distance on the limit seat 21 to adjust the width of the through slot 211, so that the through slot 211 can hold workpieces 5 of different diameters; the length of the through slot 211 is smaller than the length of the base 2.

[0026] Please refer to Figure 1-Figure 3 .

[0027] The silo mechanism 3 is placed on the limiting seat 21, and the through slot 211 is close to the silo mechanism 3; the silo mechanism 3 includes a storage bracket 31 and two opposite and symmetrical guide plates 32; the storage bracket 31 is erected on the limiting seat 21, the storage bracket 31 is fixedly connected to the limiting seat 21, and the guide plate 32 is slidably connected to one side of the storage bracket 31. In this embodiment, the guide plate 32 and the through slot 211 are preferably perpendicular to each other, and the two guide plates 32 are respectively close to the two ends of the storage bracket 31. A material guide slot 311 is formed between the storage bracket 31 and the guide plate 32. The width of the guide slot 311 is adjusted by adjusting the distance between the storage bracket 31 and the guide plate 32, so that the guide slot 311 can pass workpieces 5 of different diameters. A storage box 312 extends from the other side of the storage bracket 31. The storage box 312 is close to the top of the storage bracket 31. The storage box 312 is used to place the workpiece 5. The storage box 312 is connected to the material guide trough 311. The bottom of the storage box 312 is inclined toward the material guide trough 311, so that the workpiece 5 can slide into the material guide trough 311 in the storage box 312; there is a certain space between the two material guide plates 32, and the worker can observe the inventory of the workpiece 5 in the storage box 312 and whether the material guide trough 311 is blocked by the workpiece 5 through the space between the two material guide plates 32.

[0028] Furthermore, a cylinder bracket 33 is fixedly connected to the other side of the storage bracket 31, and the cylinder bracket 33 is close to the bottom of the storage bracket 31. A connecting rod 331 extends from the cylinder bracket 33. In this embodiment, the cylinder bracket 33 and the connecting rod 331 preferably form a right angle, one end of the connecting rod 331 is rotatably connected to a limiting plate 332, and the limiting plate 332 is parallel to the cylinder bracket 33. A limiting cylinder 333 is fixedly connected to the cylinder bracket 33, and the output shaft of the limiting cylinder 333 passes through the limiting bracket and is rotatably connected to the limiting plate 332. The limiting plate 332 extends from one end of the connecting rod 331 into the storage box 312, and the limiting plate 332 is rotatably connected to one end of the connecting rod 331 with a pulley, which is close to between the two material guide grooves 311.

[0029] Please refer to Figure 2 .

[0030] A feeding cylinder 22 is installed at the bottom of the base 2, and the feeding cylinder 22 is close to one end of the base 2, so that the length of the output shaft of the feeding cylinder 22 can be the same as the length of the base 2; the output shaft of the feeding cylinder 22 is fixedly connected to a connecting plate 221, and a push rod 222 is fixedly connected to the connecting plate 221. The push rod 222 is parallel to the output shaft of the feeding cylinder 22, and the output shaft of the feeding cylinder 22 and the push rod 222 are both located at the same end of the connecting plate 221, and the push rod 222 is located in the through groove 21 1; In this embodiment, the cross section of the push rod 222 is preferably cross-shaped. The cross-shaped push rod 222 can enhance its own anti-deformation ability and prevent the push rod 222 from bending when pushing the workpiece 5 and causing damage to the CNC lathe; the end face of the push rod 222 away from the connecting plate 221 is rotatably connected with a contact piece, and the contact piece touches the workpiece 5. When the automatic clamping chuck clamps the workpiece 5 to rotate, the workpiece 5 drives the contact piece to rotate on the push rod 222, avoiding direct friction between the workpiece 5 and the push rod 222 when rotating. Two telescopic rods 223 are installed on the base 2, and the two ends of the telescopic rod 223 are fixedly connected to the base 2 and one end of the connecting plate 221 respectively. The two telescopic rods 223 are respectively located on both sides of the feeding cylinder 22. When the feeding cylinder 22 pushes the connecting plate 221 forward, the connecting plate 221 pulls the telescopic rod 223 to expand. The two telescopic rods 223 can control the stability of the movement of the connecting plate 221.

[0031] Please refer to Figure 4 .

[0032] The clamping mechanism 4 includes a screw assembly 42 and two oppositely symmetrical slides 41. The screw assembly 42 is located at one end of the base 2. The slide 41 is slidably connected to the screw assembly 42. A clamping area is formed between the two slides 41. One end of the through groove 211 is close to the clamping area. A group of rollers 411 are rotatably connected to one side of the slide 41. The two rollers 411 in each group of rollers 411 are placed parallel to each other up and down. In this embodiment, preferably, each slide 41 has two groups of rollers 411, and the two groups of rollers 411 are placed opposite to each other. The rollers 411 are located in the clamping area.

[0033] Furthermore, the screw assembly 42 includes a screw bracket, a motor and a double-threaded screw. The screw bracket is fixedly connected to one end of the base 2, and the two ends of the double-threaded screw are respectively rotatably connected to the two ends of the screw bracket. The double-threaded screw and the through groove 211 are perpendicular to each other. The two sections of threads on the double-threaded screw are respectively left-handed threads and right-handed threads, and the two sections of threads on the double-threaded screw are respectively close to the two ends of the double-threaded screw; the motor is fixedly connected to the screw bracket, and the output shaft of the motor passes through the screw bracket and is fixedly connected to one end of the double-threaded screw. The two slides 41 are respectively slidably connected to the two sections of threads, and the axis of the workpiece 5 clamped by the slide 41 of the clamping mechanism 4 is located at the center of the through groove 211. The clamping mechanism 4 clamps the workpiece 5 so that the axis of the workpiece 5 is located on the axis of the automatic clamping chuck, and also avoids the swing caused by the end of the workpiece 5 away from the automatic clamping chuck during rotation; the outer side of the workpiece 5 is in contact with the roller 411. When the workpiece 5 rotates, it drives the roller 411 to rotate, and the slide 41 contacts the workpiece 5 through the roller 411. While not reducing the clamping force of the slide 41, it also avoids direct contact between the workpiece 5 and the slide 41.

[0034] Please refer to Figure 1-Figure 4 .

[0035] In this embodiment, the base 2 is preferably installed on a CNC lathe, the clamping mechanism is close to the main shaft, the central axis of the central shaft is parallel to the through slot 211, and the axis of the central shaft is located at the center of the through slot 211.

[0036] When the equipment is loading, the limit cylinder 333 pulls the limit plate 332 to rotate a certain angle on the connecting rod 331, so that the pulley is away from the two guide grooves 311, allowing one of the workpieces 5 in the storage box 312 to slide into the guide groove 311, and the two ends of the workpiece 5 slide in the two guide grooves 311 and fall into the through groove 211, completing the loading of the workpiece 5 from the silo mechanism 3 into the through groove 211. When one workpiece 5 slides from the storage box 312 into the guide groove 311, the output shaft of the limit cylinder 333 pushes The movable limit plate 332 is reset to prevent other workpieces 5 from sliding into the guide groove 311; the loading cylinder 22 pulls the connecting plate 221 to move a certain distance toward the base 2, so that the push rod 222 pushes the workpiece 5 to pass through the clamping area and the hollow central axis in sequence, allowing the workpiece 5 to pass through the hollow automatic clamping chuck to the length to be processed, and then the automatic clamping chuck runs to clamp the workpiece 5; the output shaft of the motor drives the double-threaded screw to rotate, so that the two slides 41 approach each other, so that the roller 411 clamps the workpiece 5, and the loading of the workpiece 5 is completed.

[0037] After the CNC lathe completes the processing of the part to be processed of the workpiece 5, it is cut by the cutting tool, and the output shaft of the motor drives the double-threaded lead screw to rotate in the opposite direction, so that the two slides 41 move away from each other, allowing the roller 411 to release the workpiece 5, and the automatic clamping chuck runs to clamp the workpiece 5. The feeding cylinder 22 pulls the connecting plate 221 to move a certain distance toward the base 2. After the push rod 222 pushes the workpiece 5 out of the hollow automatic clamping chuck to pass through the length to be processed, the automatic clamping chuck runs to clamp the workpiece 5; the output shaft of the motor drives the double-threaded lead screw to rotate, so that the two slides 41 approach each other, so that the roller 411 clamps the workpiece 5, and completes the pushing out of the unprocessed part of the single workpiece 5 for processing.

[0038] When the part of the workpiece 5 to be processed is exhausted, the loading cylinder 22 pushes the connecting plate 221 to move a certain distance away from the base 2, and after the push rod 222 is away from the bottom of the silo mechanism 3, the above loading steps are repeated.

[0039] The utility model provides an automatic feeding device for lathes. The device is fixedly mounted on one end of the hollow main shaft of the CNC lathe away from the chuck, and the clamping mechanism is close to the CNC lathe. When feeding, the workpiece in the hopper mechanism falls into the through slot, and the output shaft of the feeding cylinder pulls the connecting plate close to the base, so that the push rod pushes the workpiece in the through slot through the clamping area of ​​the clamping mechanism into the hollow main shaft. After the workpiece passes through the length to be processed from the hollow automatic clamping chuck, the feeding cylinder stops running, so that the workpiece keeps the current position still, and the automatic clamping chuck runs to clamp the workpiece, completing the feeding work, which simplifies The process of arranging the equipment is simple, and the structure of this equipment is simpler than that of the loading and unloading robot, and the purchase cost is low; after the automatic clamping chuck runs to clamp the workpiece, the two slides slide on the screw assembly and approach each other, so that the rollers on the slides touch the outside of the workpiece, and the two slides form an effect of clamping the workpiece. When the automatic clamping chuck rotates, the rollers can make the workpiece still follow the rotation of the automatic clamping chuck when clamped by the two slides. When the workpiece is long, the clamping mechanism can reduce the swing caused by the end of the workpiece away from the automatic clamping chuck during rotation, thereby reducing production safety hazards.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. An automatic lathe feeding device for feeding a CNC lathe, characterized in that: It includes a base, a silo mechanism and a clamping mechanism; A limit seat is installed on the base, a through slot is provided on the limit seat, the silo mechanism is placed on the limit seat, the through slot is close to the silo mechanism, a feeding cylinder is installed on the base, the output shaft of the feeding cylinder is fixedly connected with a connecting plate, a push rod is fixedly connected with the connecting plate, the output shaft of the feeding cylinder and the push rod are both located at the same end of the connecting plate, and the push rod is placed in the limit slot; The clamping mechanism includes a screw assembly and two symmetrical slides, the screw assembly is located at one end of the base, the slide is slidably connected to the screw assembly, a clamping area is formed between the two slides, one end of the through groove is close to the clamping area, one side of the slide is rotatably connected to a group of rollers, and the rollers are located in the clamping area.

2. The automatic lathe feeding device according to claim 1, characterized in that: Two telescopic rods are installed on the base, and the two ends of the telescopic rods are respectively fixedly connected to the base and one end of the connecting plate, and the two telescopic rods are respectively located on both sides of the feeding cylinder.

3. The automatic lathe feeding device according to claim 2, characterized in that: The limiting seat is slidably connected with a limiting block, and the limiting block is located at one side of the through slot.

4. The automatic lathe feeding device according to claim 3, characterized in that: The silo mechanism includes a storage bracket and two oppositely symmetrical material guide plates, the storage bracket is erected on a limiting seat, the storage bracket is fixedly connected to the limiting seat, the material guide plate is slidably connected to one side of the storage bracket, the two material guide plates are respectively close to the two ends of the storage bracket, a material guide groove is formed between the storage bracket and the material guide plate, a storage box is extended from the other side of the storage bracket, and the storage box is communicated with the material guide groove.

5. The automatic lathe feeding device according to claim 4, characterized in that: A cylinder bracket is fixedly connected to the other side of the storage bracket, a connecting rod extends from the cylinder bracket, one end of the connecting rod is rotatably connected to a limit plate, a limit cylinder is fixedly connected to the cylinder bracket, an output shaft of the limit cylinder is rotatably connected to the limit plate, and the limit plate extends into the storage box.

6. The automatic lathe feeding device according to claim 5, characterized in that: The screw assembly includes a screw support, a motor and a double-threaded screw. The screw support is fixedly connected to one end of the base, and the two ends of the double-threaded screw are respectively rotatably connected to the two ends of the screw support. The double-threaded screw and the through groove are perpendicular to each other. The two sections of threads on the double-threaded screw are respectively left-handed threads and right-handed threads. The two sections of threads on the double-threaded screw are respectively close to the two ends of the double-threaded screw. The motor is fixedly connected to the screw support, and the output shaft of the motor passes through the screw support and is fixedly connected to one end of the double-threaded screw. The two slide seats are respectively slidably connected to the two sections of threads.

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