Machine tool punching positioning device for part production

Abstract

The invention relates to the technical field of workpiece punching and positioning, and discloses a machine tool punching and positioning device for part production, which comprises a workbench, a drill bit and a screw tap are arranged above the workbench, a rotating shell is vertically arranged on the workbench, and two positioning circular pipes are arranged on the outer wall of the rotating shell. The interior of the positioning circular pipe communicates with the interior of the rotating shell, a limiting block is arranged on the positioning circular pipe, a limiting assembly used for preventing a workpiece from moving is arranged on the workbench, a feeding mechanism is arranged on the side, close to the drill bit, of the workbench, and a discharging mechanism is arranged on the side, close to the screw tap, of the workbench. In the running process of the device, the drill bit and the screw tap work at the same time, the problem that the device is idle is solved, feeding, punching, tapping, discharging and other operations are continuously conducted on a workpiece, and the machining efficiency and the machining precision are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of machining hole technology for parts, and particularly to a drilling and positioning device for machine tools used in parts production. Background Technology

[0002] A drilling machine is a machine tool that primarily uses a drill bit to machine holes in a workpiece. Typically, the drill bit's rotation is the main motion, and its axial movement is the feed motion. Drilling machines have a simple structure and relatively low machining accuracy. They can drill through holes and blind holes. By changing special tools, they can also perform reaming, counterboring, boring, or tapping. During machining, the workpiece remains stationary while the tool moves, aligning its center with the hole center and then rotating. An external spherical roller bearing is a variation of a deep groove ball bearing. Its characteristic feature is that the outer diameter surface of its outer ring is spherical, allowing it to fit into the corresponding concave spherical surface of the bearing housing for self-aligning. During the machining of an external spherical roller bearing, after the bearing rings are positioned and fixed, holes are drilled and tapped into the outer wall of the bearing rings to machine set screw holes.

[0003] In existing technologies, when drilling and tapping the raceways of spherical bearings, the bearing raceways are first fixed to a fixture, then a drill bit is used to drill holes in them. After drilling, the drill bit is moved to the other side, and then a tap is used to tap the holes. After tapping, the bearing raceways are disassembled. To complete the drilling and tapping operations sequentially, two switching modes are typically used: one is to move the bearing raceway fixture to the vicinity of the tap after drilling, and the other is to move the drill bit to the side after drilling, while the tap is moved to the vicinity of the bearing raceway fixture to continue machining. Both methods result in some machining tools being idle, preventing continuous machining and leading to low efficiency.

[0004] Utility model CN216029282U discloses a special drilling and tapping device for bearing sleeves. A pushing and pressing mechanism pushes the bearing sleeve onto a corresponding fixed pin, and the pushing and pressing mechanism firmly presses the bearing sleeve against the operating table. Then, a pneumatic tapping machine on the corresponding side drills and taps the bearing sleeve. After drilling, the operating table rotates a certain angle. After rotation, the pushing and pressing mechanism pushes another bearing sleeve onto another fixed pin. Each pneumatic tapping machine drills holes in two corresponding bearing sleeves on the operating table, and the previously drilled and tapped bearing sleeve undergoes a second drilling and tapping process. However, this solution cannot fix the position of the bearing ring. When the operating table rotates, the bearing ring experiences a slight displacement due to centrifugal force, resulting in deviations in the tapping and drilling positions and low machining accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a machine tool drilling and positioning device for parts production, which aims to solve the problems of low efficiency and low precision in the existing technology of drilling and tapping external spherical bearings.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A drilling and positioning device for a machine tool used in parts production includes a worktable, on which a drill bit and a tap are mounted. A rotating shell is vertically mounted on the worktable, and two positioning tubes are mounted on the outer wall of the rotating shell. The interior of the positioning tubes communicates with the interior of the rotating shell. Limit blocks are mounted on the positioning tubes. A limiting component for preventing workpiece movement is mounted on the worktable. A feeding mechanism is mounted on the side of the worktable near the drill bit, and a discharging mechanism is mounted on the side of the worktable near the tap.

[0007] With the above technical solution, during the machining of spherical bearing rings, the feeding mechanism pushes the workpiece onto the positioning tube, where it abuts against the limiting block. At this point, the workpiece is fitted onto the positioning tube. Then, the drill bit descends to drill a hole in the workpiece. After drilling, the rotating shell begins to rotate forward. During this rotation, the limiting component limits the workpiece, preventing displacement due to centrifugal force as the positioning tube rotates. After the rotating shell rotates 180 degrees, the tap descends to tap the drilled hole. At this time, the feeding mechanism at the other end places the workpiece onto the positioning block at the other end. Drilling and tapping are performed on the round tube. After the workpiece at the other end is drilled, the unloading mechanism removes the workpiece. Then the rotating shell starts to rotate in the opposite direction. During the rotation, the limiting component limits the workpiece at the other end that has been drilled. After the rotating shell rotates 180 degrees in the opposite direction, the above steps are repeated to complete the drilling and tapping of the workpiece in sequence. During the operation of the equipment, the drill bit and tap work at the same time, so there is no problem of the equipment being idle. The continuous operation of loading, drilling, tapping and unloading of workpieces significantly improves the processing efficiency.

[0008] It should be understood that the structures and principles for controlling the rise and fall of the drill bit and tap, and for controlling the forward and reverse rotation of the rotating shell, are common technologies in the field and will not be elaborated upon here.

[0009] A further configuration of the present invention is as follows: the limiting component includes a cam disposed on the worktable, the cam being fixedly connected to the worktable, the cam being located inside the rotating shell, telescopic rods being horizontally disposed on both sides of the cam, a first spring being sleeved on the telescopic rods, one end of the telescopic rods contacting the cam, and a tapered body being disposed at the other end, a movable rod being disposed on the side of the telescopic rod away from the cam, one end of the movable rod contacting the tapered body, a second spring being sleeved on the movable rod, and a receiving hole being opened on the positioning tube, with one end of the movable rod located in the receiving hole.

[0010] With the above technical solution, when the workpiece is drilled and the rotating shell rotates, since the cam is fixed, one end of the telescopic rod slides along the edge of the cam, and the telescopic rod extends into the positioning tube. The conical body also extends forward, pushing the movable rod from the receiving hole into the drill hole on the workpiece, thus locking the workpiece and preventing the workpiece from shifting due to centrifugal force when the positioning tube rotates. At the same time, when the movable rod extends, it will push out the metal residue left in the workpiece drill hole during drilling, preventing the metal residue from damaging the inner wall of the hole and the tap during subsequent tapping. When the workpiece is tapped and the positioning tube is reset, the movable rod can also extend from the receiving hole to push out the metal residue in the receiving hole. If the workpiece has already shifted before the movable rod extends into the workpiece for drilling, and the hole on the workpiece and the receiving hole are not aligned, the movable rod cannot continue to extend, and the rotating shell and the positioning tube will be stuck and will not tap, preventing the workpiece from being scrapped.

[0011] A further feature of the present invention is that an elastic sheet is provided at the end of the movable rod away from the conical body, the edge of the elastic sheet is in contact with the inner wall of the receiving hole, and the elastic sheet is a rubber sheet.

[0012] With the above technical solution, when the movable rod moves in the receiving hole and the workpiece hole, the elastic sheet can push out the metal residue in the hole. The elastic sheet is made of rubber, which has a better fit with the inner wall of the receiving hole and a better cleaning effect.

[0013] A further configuration of the present invention is that the outer diameter of the movable rod is smaller than the inner diameter of the receiving hole, and when the movable rod extends into the receiving hole, the movable rod is closer to the side of the receiving hole away from the cam.

[0014] With the above technical solution, when the workpiece undergoes axial displacement on the positioning tube and the receiving hole is only partially aligned with the hole on the workpiece, the movable rod can still be inserted into the hole of the workpiece. Then, the elastic plate deforms. When the elastic plate is squeezed into the hole of the workpiece, it will push the workpiece towards the limiting block under the action of the elastic plate. In this way, when the workpiece undergoes a small displacement, the equipment will not get stuck and stop processing. It can also reset the workpiece, allowing the tap to align with the round hole and ensuring the product processing accuracy.

[0015] A further configuration of the present invention is as follows: the feeding mechanism includes an "L"-shaped feeding trough, the feeding trough includes a vertical part and a horizontal part, a control plate is provided on the vertical part, and an electric push rod is provided on the side of the horizontal part away from the rotating shell.

[0016] With the above technical solution, multiple workpieces are located in the vertical part. When the control panel is opened, a workpiece falls into the horizontal part. At this time, the workpiece is aligned with the positioning tube. Then, the electric push rod is pushed forward to push the workpiece onto the positioning tube. After the workpiece is sleeved on the positioning tube, it is aligned with the limit block, and the upper position is completed.

[0017] A further feature of the present invention is that the feeding mechanism includes a movable plate, two clamping plates are arranged opposite to each other on the movable plate, and an adjusting screw hole is provided on the clamping plate, through which an adjusting bolt is provided.

[0018] With the above technical solution, after the workpiece is tapped, the moving plate moves forward, the two clamping plates approach each other, the end of the adjusting bolt contacts the workpiece, clamping the workpiece, and then the moving plate moves backward to complete the disassembly and unloading of the workpiece. At the same time, the adjusting bolt can be rotated to adjust the distance between the adjusting bolts to accommodate workpieces of different sizes.

[0019] It should be understood that the mechanical structures and principles that drive the movement of the moving plate, clamping plate, and control plate are common technologies in this field, and will not be elaborated on here.

[0020] A further feature of the present invention is that a baffle plate is provided on the rotating shell, a connecting hole is provided on the baffle plate, the outer wall of the rotating shell is connected to the inner wall of the connecting hole, and the height of the baffle plate gradually decreases along the direction from the center to the edge.

[0021] With the above technical solution, a large amount of metal chips will be generated during the drilling and tapping process of the workpiece. The baffle plate blocks the metal chips and prevents them from entering the gap and causing the equipment to jam. At the same time, a large amount of coolant will be used during the drilling and tapping process of the workpiece. The baffle plate can block the coolant, and the coolant can also flush the metal chips on the baffle plate to one side.

[0022] A further configuration of the present invention is: Through the above technical solutions Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a rotating shell and a positioning tube to attach the workpiece to one end of the positioning tube. After drilling, the positioning tube rotates 180 degrees to tap the wire, and the other end can immediately start feeding and drilling. During the operation of the equipment, the drill bit and tap work simultaneously, so there is no problem of equipment idleness. The workpiece can be continuously fed, drilled, tapped, and unloaded, which significantly improves the processing efficiency.

[0023] 2. This invention, by setting up a cam, a telescopic rod, and a movable rod, allows the movable rod to be pushed from the receiving hole into the drill hole on the workpiece when the rotating shell rotates, thus locking the workpiece and preventing it from shifting due to centrifugal force. Simultaneously, the movable rod pushes out any metal residue left in the workpiece's drill hole during drilling, preventing damage to the inner wall of the hole and the tap during subsequent tapping. If the workpiece has already shifted before the movable rod extends, and the hole on the workpiece and the receiving hole are not aligned, the movable rod cannot continue to penetrate the hole, and the rotating shell and the positioning tube will remain stuck, preventing tapping and thus preventing workpiece scrap.

[0024] 3. By setting an elastic plate and ensuring that the outer diameter of the movable rod is smaller than the inner diameter of the receiving hole, if the workpiece has undergone a slight displacement and the receiving hole is only partially aligned with the hole on the workpiece, the movable rod can still be inserted into the hole of the workpiece. Then, the elastic plate deforms, and under the action of the elastic plate's deformation recovery, it will push the workpiece towards the limiting block. In this way, when the workpiece undergoes a slight displacement, the equipment will not jam and stop processing, the equipment has a higher fault tolerance, and it can also reset the workpiece, allowing the tap to align with the round hole, ensuring the product processing accuracy. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the rotating shell, the positioning tube, and the blocking plate in one embodiment of the present invention; Figure 3 This is a schematic diagram of the workpiece structure in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the cam, the movable rod, and the limiting block in one embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the limiting component in one embodiment of the present invention; Figure 6 yes Figure 5 Enlarged view of section A; Figure 7 This is a schematic diagram of the feeding mechanism in one embodiment of the present invention; Figure 8 This is a schematic diagram of the feeding mechanism structure in one embodiment of the present invention; Figure 9 This is a schematic diagram showing the position and structure of the movable rod and the receiving hole in one embodiment of the present invention.

[0027] Reference numerals: 1. Workbench; 2. Drill bit; 3. Tap; 4. Rotary shell; 5. Positioning tube; 5a. Receiving hole; 6. Limiting block; 7. Limiting assembly; 7a. Cam; 7b. Telescopic rod; 7b1. First spring; 7b2. Conical body; 7c. Movable rod; 7c1. Second spring; 7c2. Elastic plate; 8. Feeding mechanism; 8a. Discharge chute; 8a1. Vertical part; 8a2. Horizontal part; 8b. Control panel; 8c. Electric push rod; 9. Discharge mechanism; 9a. Moving plate; 9b. Clamping plate; 9b1. Adjusting screw hole; 9b2. Adjusting bolt; 10. Blocking plate; 10a. Connecting hole; 11. Spray pipe; 12. Workpiece. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] The present invention provides a machine tool drilling and positioning device for parts production, such as... Figures 1 to 3 As shown, the worktable includes a workbench 1, a drill bit 2 and a tap 3 are arranged above the workbench 1, and a spray pipe is arranged on the side near the drill bit 2 and the side near the tap 3. A rotating shell 4 is vertically arranged on the workbench 1. Two positioning round tubes 5 are arranged on the outer wall of the rotating shell 4. The interior of the positioning round tubes 5 is connected to the interior of the rotating shell 4. A limit block 6 is arranged on the positioning round tubes 5. A limit component 7 for preventing the workpiece from moving is arranged on the workbench 1. A feeding mechanism 8 is arranged on the side of the workbench 1 near the drill bit 2. A discharging mechanism 9 is arranged on the side of the workbench 1 near the tap 3.

[0030] like Figure 2 As shown, a baffle plate 10 is provided on the rotating shell 4, and a connection hole 10a is provided on the baffle plate 10. The outer wall of the rotating shell 4 is connected to the inner wall of the connection hole 10a, and the height of the baffle plate 10 gradually decreases from the middle to the edge.

[0031] When machining the outer spherical bearing ring, the workpiece is fitted onto the positioning tube 5, and then the drill bit 2 is lowered by the cylinder to drill a hole in the workpiece. After drilling, a servo motor is connected to the rotating shell 4, which controls the rotating shell 4 to start rotating in the forward direction. After the rotating shell 4 rotates 180 degrees, the cylinder controls the tap 3 to descend and tap the drilled hole. At this time, a new workpiece is fitted onto the positioning tube 5 at the other end for drilling. After tapping, the workpiece at the other end is also drilled. The tapped workpiece is removed, and then the servo motor controls the rotating shell 4 to start rotating in the reverse direction by 180 degrees. The above steps are repeated to complete the drilling and tapping of the workpiece in sequence. During the operation of the equipment, the drill bit 2 and the tap 3 work simultaneously, so there is no problem of equipment idleness. The continuous operation of loading, drilling, tapping, and unloading of workpieces significantly improves the processing efficiency.

[0032] like Figures 4 to 6 As shown, the limiting component 7 includes a cam 7a fixedly connected to the worktable 1. The cam 7a is located inside the rotating shell 4. Telescopic rods 7b are horizontally arranged on both sides of the cam 7a. A first spring 7b1 is sleeved on the telescopic rod 7b. One end of the telescopic rod 7b is in contact with the cam 7a, and a conical body 7b2 is provided at the other end. A movable rod 7c is provided on the side of the telescopic rod 7b away from the cam 7a. One end of the movable rod 7c is in contact with the conical body 7b2, and a second spring 7c1 is sleeved on the movable rod 7c. A receiving hole 5a is opened on the positioning tube 5. One end of the movable rod 7c is located in the receiving hole 5a. An elastic piece 7c2 is provided on the end of the movable rod 7c away from the conical body 7b2. The edge of the elastic piece 7c2 is in contact with the inner wall of the receiving hole 5a. The elastic piece 7c2 is a rubber sheet.

[0033] When the rotating shell 4 rotates, the workpiece is subjected to centrifugal force. To prevent the workpiece from moving and to ensure that the drilling and tapping positions do not shift, the cam 7a remains stationary while the rotating shell 4 rotates. One end of the telescopic rod 7b slides along the edge of the cam 7a, and the telescopic rod 7b extends into the positioning tube 5. The conical body 7b2 also extends forward, pushing the movable rod 7c and the elastic plate 7c2 from the receiving hole 5a into the drill hole on the workpiece, thus locking the workpiece. At the same time, when the movable rod 7c extends, the elastic plate 7c2 will push out the metal residue left in the drill hole of the workpiece during drilling by the drill bit 2. After tapping is completed, when the positioning tube 5 is reset, the movable rod 7c and the elastic plate 7c2 can also push out the metal residue in the receiving hole 5a. If the workpiece has shifted before the movable rod 7c extends into the drill hole of the workpiece, and the hole of the workpiece and the receiving hole 5a are not aligned, the movable rod 7c cannot extend from the receiving hole 5a into the drill hole of the workpiece. The rotating shell 4 and the positioning tube 5 will be stuck and will not perform tapping, thus preventing the workpiece from being scrapped.

[0034] To prevent excessive rotational force of the rotating shell 4 from causing the telescopic rod 7b to disengage from the cam 7a or even damage the telescopic rod 7b, a distance sensor can be installed inside the rotating shell 4 or the positioning tube 5 to detect the extension distance of the telescopic rod 7b. When the end of the telescopic rod 7b has not moved to the set position, the distance sensor sends an electrical signal to control the rotating shell 4 to stop rotating, thus preventing damage.

[0035] To ensure that the telescopic rod 7b slides smoothly on the cam 7a and the movable rod 7c slides smoothly on the surface of the conical body 7b2, the ends of the telescopic rod 7b and the movable rod 7c are spherical, or ball bearings can be directly installed.

[0036] Meanwhile, in order to adapt to different types of workpieces, the cam 7a and the worktable 1 are detachably connected. In this embodiment, the connection is fixed with bolts. The positioning tube 5 and the rotating shell 4 are also detachably connected. Different sizes of cam 7a and positioning tube 5 can be selected according to different workpiece processing parameters.

[0037] like Figure 7 As shown, the feeding mechanism 8 includes an "L"-shaped feeding trough 8a. The feeding trough 8a includes a vertical part 8a1 and a horizontal part 8a2. A control plate 8b is provided on the vertical part 8a1, and an electric push rod 8c is provided on the side of the horizontal part 8a2 away from the rotating shell 4.

[0038] Multiple workpieces are placed in the vertical part 8a1. The control board 8b is extended and retracted by the cylinder. When the control board 8b retracts, a workpiece falls into the vertical part 8a1. The electric push rod 8c pushes the workpiece toward the positioning tube 5 and fits the workpiece onto the positioning tube 5.

[0039] like Figure 8 As shown, the feeding mechanism 9 includes a movable plate 9a, on which two clamping plates 9b are arranged opposite each other. An adjusting screw hole 9b1 is provided on the clamping plate 9b, and an adjusting bolt 9b2 is provided through the adjusting screw hole 9b1.

[0040] After the workpiece is tapped, the moving plate 9a is moved forward by the cylinder, and then another set of cylinders controls the clamping plates 9b to move closer to each other. The end of the adjusting bolt 9b2 clamps the workpiece, and the moving plate 9a is retracted by the cylinder to remove the workpiece from the positioning tube 5. The worktable 1 is equipped with a special discharge port. When the workpiece moves above the discharge port, the clamping plates 9b are moved away from each other by the cylinder, and the workpiece falls into the discharge port to complete the unloading.

[0041] like Figure 9 As shown, the outer diameter of the movable rod 7c is smaller than the inner diameter of the receiving hole 5a. The inner diameter of the receiving hole 5a is the same as the inner diameter of the workpiece drill hole. When the movable rod 7c extends into the receiving hole 5a, the movable rod 7c is closer to the side of the receiving hole 5a away from the cam 7a.

[0042] During the rotation of the rotating shell 4, it takes a certain amount of time for the movable rod 7c to extend from the receiving hole 5a into the workpiece hole. During this time, the workpiece may undergo axial displacement on the positioning tube 5 due to centrifugal force, and the receiving hole 5a and the workpiece hole may only be partially aligned. At this time, since the outer diameter of the movable rod 7c is smaller, it is generally set to 0.5-0.8 times the inner diameter of the receiving hole 5a and the workpiece hole. The movable rod 7c can still extend from the receiving hole 5a into the workpiece hole. The movable rod 7c drives the elastic plate 7c2 into the workpiece hole. When the elastic plate 7c2 just enters the workpiece hole, it will deform. Then, during the process of the elastic plate 7c2 returning to its original shape, it will push the workpiece towards the limiting block 6, allowing the workpiece to reset. In this way, the position of the workpiece during drilling and tapping is aligned without deviation. At the same time, the entire equipment will not stop working due to the slight displacement of the workpiece and the inability of the movable rod 7c to continue moving. The fault tolerance of the equipment is higher.

[0043] The workflow of this technical solution is as follows: Based on the workpiece dimensions, select a suitable cam 7a, positioning tube 5, and movable rod 7c. Fix cam 7a on the worktable 1, connect positioning tube 5 to the rotating shell 4, and retract control plate 8b. The workpiece falls from the vertical part 8a1 of the feed chute 8a into the horizontal part 8a2. Electric push rod 8c pushes the workpiece forward, and the workpiece is fitted onto one end of positioning tube 5, abutting against limit block 6. Then, drill bit 2 descends to drill a hole in the workpiece surface. After drilling, drill bit 2 rises, rotating shell 4 begins to rotate, and positioning tube 5 drives the workpiece to begin rotating forward. During rotation, as rotating shell 4 rotates, telescopic rod 7b slides on cam 7a, and cone 7b2 extends forward, pushing movable rod 7c from receiving hole 5a into the hole of the workpiece, locking the workpiece and preventing it from shifting. The movement also removes metal shavings generated during drilling from the workpiece's hole. After rotating 180 degrees forward, the electric push rod 8c pushes the new workpiece to be processed onto the positioning tube 5 at the other end, and drilling begins. The workpiece that has already been drilled is located below the tap 3. The tap 3 descends to tap the workpiece. Drilling and tapping of the two workpieces are carried out simultaneously. After tapping is completed, the tapped workpiece is unloaded. Then, the rotating shell 4 drives the positioning tube 5 to rotate 180 degrees in the opposite direction. The unloaded positioning tube 5 is fitted with a new workpiece to begin drilling, and the workpiece that has just been drilled begins tapping. The above steps are repeated in sequence, and multiple workpieces can be processed continuously. The drill bit 2 and tap 3 will not be idle, resulting in high production efficiency. The workpiece can be limited and fixed and the offset can be adjusted, resulting in high processing accuracy.

[0044] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0045] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A drilling and positioning device for machine tools used in parts production, characterized in that: The system includes a workbench (1), on which a drill bit (2) and a tap (3) are arranged. A rotating shell (4) is vertically arranged on the workbench (1). Two positioning tubes (5) are arranged on the outer wall of the rotating shell (4). The interior of the positioning tubes (5) is connected to the interior of the rotating shell (4). A limit block (6) is arranged on the positioning tubes (5). A limit assembly (7) for preventing workpiece movement is arranged on the workbench (1). A feeding mechanism (8) is arranged on the side of the workbench (1) near the drill bit (2). A unloading mechanism (9) is arranged on the side of the workbench (1) near the tap (3).

2. The machine tool drilling and positioning device for parts production according to claim 1, characterized in that: The limiting component (7) includes a cam (7a) disposed on the worktable (1), the cam (7a) being fixedly connected to the worktable (1), the cam (7a) being located inside the rotating shell (4), and telescopic rods (7b) being horizontally disposed on both sides of the cam (7a), a first spring (7b1) being sleeved on the telescopic rods (7b), one end of the telescopic rods (7b) being in contact with the cam (7a), and a cone (7b2) being disposed at the other end, a movable rod (7c) being disposed on the side of the telescopic rods (7b) away from the cam (7a), one end of the movable rod (7c) being in contact with the cone (7b2), and a second spring (7c1) being sleeved on the movable rod (7c), and a receiving hole (5a) being opened on the positioning tube (5), with one end of the movable rod (7c) located in the receiving hole (5a).

3. The machine tool drilling and positioning device for parts production according to claim 2, characterized in that: An elastic sheet (7c2) is provided at the end of the movable rod (7c) away from the cone (7b2). The edge of the elastic sheet (7c2) is in contact with the inner wall of the receiving hole (5a). The elastic sheet (7c2) is a rubber sheet.

4. The machine tool drilling and positioning device for parts production according to claim 3, characterized in that: The outer diameter of the movable rod (7c) is smaller than the inner diameter of the receiving hole (5a). When the movable rod (7c) extends into the receiving hole (5a), the movable rod (7c) is closer to the side of the receiving hole (5a) away from the cam (7a).

5. The machine tool drilling and positioning device for parts production according to claim 1, characterized in that: The feeding mechanism (8) includes an "L"-shaped feeding trough (8a), which includes a vertical part (8a1) and a horizontal part (8a2). A control plate (8b) is provided on the vertical part (8a1), and an electric push rod (8c) is provided on the side of the horizontal part (8a2) away from the rotating shell (4).

6. The machine tool drilling and positioning device for parts production according to claim 1, characterized in that: The feeding mechanism (9) includes a movable plate (9a), on which two clamping plates (9b) are arranged opposite each other. An adjusting screw hole (9b1) is provided on the clamping plate (9b), and an adjusting bolt (9b2) is provided through the adjusting screw hole (9b1).

7. The machine tool drilling and positioning device for parts production according to claim 1, characterized in that: A baffle plate (10) is provided on the rotating shell (4), and a connecting hole (10a) is provided on the baffle plate (10). The outer wall of the rotating shell (4) is connected to the inner wall of the connecting hole (10a), and the height of the baffle plate (10) gradually decreases from the middle to the edge.

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