Numerical control drilling and tapping combined machine tool and using method based on rotating disc type drilling and tapping machine tool

Abstract

The invention relates to the technical field of machine tools, and discloses a numerical control drilling and tapping combined machine tool and a using method based on a rotary disc type drilling and tapping machine tool. The numerical control drilling and tapping combined machine tool comprises a workbench, a rotary machining table, a drilling device and a tapping device; the drilling device and the tapping device are both fixedly installed on the workbench. A clamping mechanism is arranged on the rotary machining table; according to the numerical control drilling and tapping combined machine tool, by arranging the clamping box, the inserting opening, the outer side positioning clamp, the rotating shaft and the inner side positioning clamp, when a workpiece is drilled and tapped, clamping and popping of the workpiece can be controlled through automatic clamping and opening of the outer side positioning clamp and automatic popping and retracting of the inner side positioning clamp; and after the workpiece is placed on the feeding station, the outer side positioning clamp automatically clamps the workpiece along with rotation of the rotary machining table, and the workpiece is kept stable during drilling and tapping machining.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tools, in particular to a numerical control drilling and tapping combined machine tool and a use method based on a rotary table type drilling and tapping machine tool. BACKGROUND

[0002] The numerical control drilling and tapping combined machine tool is a mechanical processing equipment combining drilling and tapping functions and adopting numerical control system for automatic control, which can complete multiple processing procedures such as drilling and tapping under the condition of clamping a workpiece once, reduces the carrying and clamping times of the workpiece between different equipment, and improves the processing efficiency and precision.

[0003] Chinese patent CN118559422B discloses a numerical control rotary table type multi-station drilling and tapping combined machine tool, which clamps a circular part after the circular part enters the inside of a processing groove by setting two extrusion springs to push the pressure of an arc-shaped support and two elastic sheets to exert pressure on two shifting bars.

[0004] When using the above device, the worker needs to manually install the feeding fitting frame to the butt joint feeding frame every time the cylindrical part to be drilled and tapped is put in, and then moves the butt joint feeding frame to make the feeding fitting frame move to the inside of the processing groove, so that the operation of the device is more troublesome, the degree of automation is insufficient, the workpiece placed in the clamping position cannot be automatically clamped, and the feeding fitting frame is prone to falling off. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a numerical control drilling and tapping combined machine tool and a use method based on a rotary table type drilling and tapping machine tool, which has the advantages of automatically clamping a workpiece and ejecting a completed workpiece, and solves the problems mentioned in the above background.

[0007] (II) Technical solutions

[0008] To solve the above technical problems, the present application provides the following technical solutions:

[0009] A numerical control drilling and tapping combined machine tool, comprising a workbench, a rotary processing table, a drilling device and a tapping device, the rotary processing table is rotationally installed on the upper surface of the workbench, and the drilling device and the tapping device are both fixedly installed on the workbench.

[0010] The rotating machining table is provided with a clamping mechanism, which comprises a clamping box, an outer positioning clamp, an inner positioning clamp, an outer clamp control assembly and an inner clamp control assembly.

[0011] The rotating machining table is provided with a control disc, which is fixedly installed on the workbench, and the outer side of the control disc is fixedly installed with a sliding belt and a tooth plate.

[0012] The rotating machining table is provided with a control disc, which is fixedly installed on the workbench, and the outer side of the control disc is fixedly installed with a sliding belt and a tooth plate.

[0013] Preferably, the inside of the clamping box is symmetrically provided with two rotating shafts, the lower end of the rotating shaft extends through the inner bottom wall of the clamping box to the lower side of the clamping box and is fixedly installed with a transmission gear, and the transmission gears are meshingly connected.

[0014] Preferably, the outer clamp control assembly comprises a ratchet wheel, a ratchet rod and a locking spring, the ratchet wheel is arranged below the clamping box and is fixedly connected with the lower end of one of the rotating shafts, the lower surface of the clamping box is fixedly installed with a rotating rod and a hanging rod, the middle part of the ratchet rod is rotatably connected with the rotating rod, the head part of the ratchet rod is matched and clamped with the ratchet wheel, the tail part of the ratchet rod is fixedly installed with a hanging rod, one end of the locking spring is hung and installed with the hanging rod, and the other end of the locking spring is hung and installed with the hanging rod.

[0015] The tail part of the ratchet rod abuts against one end of the sliding belt when the clamping box approaches the sliding belt, the head part of the ratchet rod is separated from the ratchet wheel when the sliding belt drives the ratchet rod to rotate, and the locking spring is elongated, the locking spring pulls the ratchet rod to reset when the ratchet rod is away from the sliding belt, so that the ratchet rod is relocked with the ratchet wheel.

[0016] Preferably, the outer clamp control assembly further comprises a tension spring and a reverse gear, the lower surface of the clamping box is fixedly installed with a pulling rod, the transmission gear is fixedly installed with a pulling rod, one end of the tension spring is hung and installed with the pulling rod, and the other end of the tension spring is hung and installed with the pulling rod, and the reverse gear is fixedly installed on one of the rotating shafts and is meshingly engaged with the tooth plate.

[0017] The two outer positioning clamps on the same clamping box are close to each other at the end far from the rotating shaft under the pulling of the tension spring, and the two outer positioning clamps on the same clamping box are far from each other at the end far from the rotating shaft when the gear plate drives the reverse gear to rotate.

[0018] Preferably, the inner clamp control assembly comprises a push block and a sliding block, the inner wall of the clamping box is provided with a sliding hole, the push block is slidingly installed in the sliding hole, one end of the push block is slidingly attached to the outer side of the control disc, the sliding block is slidingly installed in the clamping box, and the two sides of the sliding block are respectively provided with an inner rotating plate and an outer rotating plate, the other end of the inner rotating plate is rotatably connected to one side wall of the push block, and the other end of the outer rotating plate is rotatably connected to one side wall of the inner positioning clamp.

[0019] Preferably, the inner wall of the clamping box is symmetrically provided with a sliding groove, and the sliding block is slidingly installed in the sliding groove.

[0020] Preferably, the inner clamp control assembly further comprises a compression spring, one end of the compression spring is fixedly connected with the sliding block, and the other end of the compression spring is fixedly connected with a fixed block, and the fixed block is fixedly installed in the clamping box.

[0021] When the push block approaches the trap groove, the compression spring is automatically retracted, so that the push block is inserted into the trap groove, thereby causing the inner positioning clamp to be pushed out to the outside.

[0022] Preferably, the inner wall of the trap groove is provided with an inclined surface, and the push block is inserted into the trap groove from the side with a larger depth in the trap groove during the rotation of the rotating machining table, and is slid out from the other side of the trap groove.

[0023] Preferably, the upper surface of the workbench is fixedly installed with a motor, and the driving end of the motor is fixedly connected with the rotating machining table.

[0024] The application also discloses a use method of the rotating disc type drilling and tapping machine tool.

[0025] The rotating machining table stops once every quarter of a circle under the action of the starting device;

[0026] When the rotating machining table stops rotating, the four clamping boxes installed thereon are stopped at the discharging station, the feeding station, the drilling station and the tapping station respectively, and the drilling device and the tapping device process the workpieces stopped at the drilling station and the tapping station respectively.

[0027] The workpiece falling from the discharging station is taken off, and the workpiece to be drilled and tapped is placed into the socket formed in the clamping box stopped at the feeding station;

[0028] Then the rotating workbench continues to rotate, the clamping box moves from the discharging station to the feeding station, the outer positioning clamp keeps open state and the inner positioning clamp gradually retracts to one side of the socket, the clamping box moves from the feeding station to the drilling station, the outer positioning clamp gradually approaches each other to clamp the workpiece and the inner positioning clamp keeps stationary, the clamping box moves from the drilling station to the tapping station, the outer positioning clamp and the inner positioning clamp keep the state of clamping the workpiece, the clamping box moves from the tapping station to the discharging station, the outer positioning clamp gradually opens and the inner positioning clamp keeps stationary, until the inner clamp control assembly contacts the trap groove, the workpiece is suddenly ejected to the side.

[0029] (Three) beneficial effects

[0030] Compared with the prior art, the present application provides a numerical control drilling and tapping combined machine tool and a use method based on a rotating disc type drilling and tapping machine tool, which has the following beneficial effects:

[0031] 1. The numerical control drilling and tapping combined machine tool, by setting the clamping box, the socket, the outer positioning clamp, the rotating shaft and the inner positioning clamp, when drilling and tapping the workpiece, the clamping and ejection of the workpiece can be controlled by the automatic clamping and opening of the outer positioning clamp and the automatic ejection and retraction of the inner positioning clamp, so that the workpiece is automatically ejected after moving to the discharging station, and after placing the workpiece on the feeding station, the outer positioning clamp automatically clamps the workpiece with the rotation of the rotating workbench, so that the workpiece remains stable during drilling and tapping.

[0032] 2. The numerical control drilling and tapping combined machine tool, by setting the sliding belt, the toothed plate, the rotating shaft, the ratchet wheel, the ratchet rod, the locking spring, the tension spring and the reverse gear, the ratchet rod limits the rotating direction of the ratchet wheel, when the ratchet rod and the ratchet wheel are connected, the tension spring can pull the rotating shaft to rotate to clamp the outer positioning clamp, but the rotating shaft cannot rotate in reverse, so that the clamped outer positioning clamp cannot be loosened, thereby reducing the influence of the vibration generated during drilling and tapping of the workpiece on the clamping effect of the workpiece, thereby ensuring the machining precision, when the sliding belt contacts the ratchet rod, the ratchet rod and the ratchet wheel are separated, the toothed plate contacts the reverse gear with the rotation of the rotating workbench, the reverse gear drives the rotating shaft to reverse, and the outer positioning clamp is opened.

[0033] 3. The numerical control drilling and tapping combined machine tool, by setting the push block, the sliding block, the sliding hole, the inner rotating plate, the outer rotating plate and the pressure spring, when the push block slides on the outer surface of the control disc, the inner positioning clamp keeps stationary, when the push block moves to the position of the trap groove opened on the surface of the control disc, under the action of the tension of the pressure spring, the push block is inserted into the trap groove, and the inner positioning clamp slides, so that the workpiece can be ejected under the condition that the outer positioning clamp is opened. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1It is one of the three-dimensional structure schematic view of the numerical control drilling and tapping combined machine tool of the present application;

[0035] Figure 2 It is the second three-dimensional structure schematic view of the numerical control drilling and tapping combined machine tool of the present application;

[0036] Figure 3 It is the three-dimensional structure schematic view of the present application Figure 2 It is the partial enlarged structure schematic view of A in the present application;

[0037] Figure 4 It is the third three-dimensional structure schematic view of the numerical control drilling and tapping combined machine tool of the present application;

[0038] Figure 5 It is the partial enlarged structure schematic view of B in the present application Figure 4

[0039] Figure 6 It is the partial enlarged structure schematic view of C in the present application Figure 4

[0040] Figure 7 It is the first three-dimensional structure sectional view of the numerical control drilling and tapping combined machine tool of the present application;

[0041] Figure 8 It is the partial enlarged structure schematic view of D in the present application Figure 7

[0042] Figure 9 It is the second three-dimensional structure sectional view of the numerical control drilling and tapping combined machine tool of the present application;

[0043] Figure 10 It is the partial enlarged structure schematic view of E in the present application Figure 9

[0044] Figure 11 It is the third three-dimensional structure sectional view of the present application;

[0045] Figure 12 It is the partial enlarged structure schematic view of F in the present application Figure 11

[0046] In the figure:

[0047] 1, workbench; 11, motor;

[0048] 2, rotary processing table;

[0049] 3, clamping mechanism;

[0050] ​​​​​31, clamping box; 311, socket; 312, rotating rod; 313, hanging rod; 314, pull rod; 315, sliding hole; 316, sliding groove; 32, outer positioning clamp; 321, rotating shaft; 322, transmission gear; 3221, pull connecting rod; 33, inner positioning clamp; 34, outer clamp control assembly; 341, ratchet wheel; 342, ratchet rod; 343, locking spring; 344, hanging connecting rod; 345, tension spring; 346, reverse gear; 35, inner clamp control assembly; 351, push block; 352, sliding block; 353, inner rotating plate; 354, outer rotating plate; 355, pressure spring; 356, fixed block;

[0051] 4, control disc; 41, sliding belt; 42, toothed plate; 43, recess;

[0052] 5, drilling device;

[0053] 6, tapping device. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0055] Embodiment one

[0056] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 10 , the present application provides a numerical control drilling and tapping combined machine tool, comprising a workbench 1, a rotating machining table 2, a drilling device 5 and a tapping device 6, the rotating machining table 2 is rotationally installed on the upper surface of the workbench 1, and the drilling device 5 and the tapping device 6 are both fixedly installed on the workbench 1;

[0057] The rotating machining table 2 is provided with a clamping mechanism 3, the clamping mechanism 3 comprises a clamping box 31, an outer positioning clamp 32, an inner positioning clamp 33, an outer clamp control assembly 34 and an inner clamp control assembly 35, the upper end of the clamping box 31 is provided with a socket 311 in communication with the outer edge thereof, one end of the outer positioning clamp 32 is fixedly installed with a rotating shaft 321, the rotating shaft 321 is rotationally installed in the interior of the clamping box 31, and the inner positioning clamp 33 is slidingly installed in the interior of the clamping box 31;

[0058] The lower portion of the rotating machining table 2 is provided with a control disc 4, the control disc 4 is fixedly installed on the workbench 1, the outer side surface of the control disc 4 is fixedly installed with a sliding belt 41 and a toothed plate 42, and the outer side surface of the control disc 4 is provided with a recess 43.

[0059] When the shaft 321 is in contact with the slide belt 41, the outer positioning clamp 32 is opened and rotated with the rotation of the rotary workbench 2, and when the outer clamp control assembly 34 is separated from the tooth plate 42, the outer positioning clamp 32 is clamped, and when the inner clamp control assembly 35 is in contact with the trap groove 43, the inner positioning clamp 33 is pushed out to the outside.

[0060] From the above, the numerical control drilling and tapping combined machine tool, by setting the clamping box 31, the socket 311, the outer positioning clamp 32, the shaft 321 and the inner positioning clamp 33, when drilling and tapping workpieces, the clamping and ejection of the workpiece can be controlled by the automatic clamping and opening of the outer positioning clamp 32 and the automatic ejection and retraction of the inner positioning clamp 33, so that the workpiece is automatically ejected after moving to the discharge station, and after placing the workpiece on the feeding station, the outer positioning clamp 32 automatically clamps the workpiece with the rotation of the rotary workbench 2, so that the workpiece remains stable during drilling and tapping, at the same time, the inner positioning clamp 33 does not move when clamping the workpiece, by setting the shape of one end of the inner positioning clamp 33 and one end of the socket 311 to be the same, so that the cylindrical workpiece placed inside the socket 311 will not be tilted when clamped by the outer positioning clamp 32.

[0061] In addition, the drilling device 5 and the tapping device 6 mentioned in the embodiment are the drill bit used on the machining machine tool in the prior art for drilling or tapping operation on the surface of the part, and the motor driving the drill bit to rotate and move and the supporting electrical structure and bracket. Since the innovative content in the present application does not involve specific improvements of the drilling device 5 and the tapping device 6, detailed description is not given.

[0062] When the machine is used, the starting device is started, and the rotating workbench 2 stops once every quarter of a turn. When the rotating workbench 2 stops rotating, the four clamping boxes 31 installed thereon stop at the discharging station, the feeding station, the drilling station and the tapping station respectively, and the drilling device 5 and the tapping device 6 process the workpieces stopped at the drilling station and the tapping station respectively. The workpiece falling from the discharging station is taken off, and the workpiece to be drilled and tapped is placed in the socket 311 of the clamping box 31 stopped at the feeding station. Then the rotating workbench 2 continues to rotate. During the movement of the clamping box 31 from the discharging station to the feeding station, the outer positioning clamps 32 remain in the open state and the inner positioning clamps 33 gradually retract to one side of the socket 311. During the movement of the clamping box 31 from the feeding station to the drilling station, the outer positioning clamps 32 gradually approach each other to clamp the workpiece and the inner positioning clamps 33 remain stationary. During the movement of the clamping box 31 from the drilling station to the tapping station, the outer positioning clamps 32 and the inner positioning clamps 33 both remain in the state of clamping the workpiece. During the movement of the clamping box 31 from the tapping station to the discharging station, the outer positioning clamps 32 gradually open and the inner positioning clamps 33 remain stationary, until the inner clamp control assembly 35 suddenly ejects the workpiece to the side when it contacts the trap 43.

[0063] Embodiment Two

[0064] As shown in Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 12 , the difference between this embodiment and the above-mentioned embodiments is that two rotating shafts 321 are symmetrically arranged inside the clamping box 31, the lower end of the rotating shaft 321 extends below the clamping box 31 through the inner bottom wall of the clamping box 31 and is fixedly installed with a transmission gear 322, and the transmission gears 322 are meshingly connected.

[0065] As can be seen from the above, since two rotating shafts 321 are arranged on the clamping box 31, two outer positioning clamps 32 are installed on the same clamping box 31. Since the transmission gears 322 are meshingly connected, the rotating directions of the two rotating shafts 321 are always opposite and the rotating speeds are the same, so that the outer positioning clamps 32 can be opened and clamped.

[0066] The outer clamp control assembly 34 comprises a ratchet wheel 341, a ratchet rod 342 and a locking spring 343. The ratchet wheel 341 is arranged below the clamping box 31 and fixedly connected with the lower end of one of the rotating shafts 321. The lower surface of the clamping box 31 is fixedly installed with a rotating rod 312 and a hanging rod 313. The middle part of the ratchet rod 342 is rotatably connected with the rotating rod 312, and the head of the ratchet rod 342 is matched and clamped with the ratchet wheel 341. The tail of the ratchet rod 342 is fixedly installed with a hanging rod 344. One end of the locking spring 343 is hung and installed with the hanging rod 313, and the other end of the locking spring 343 is hung and installed with the hanging rod 344.

[0067] When the tail of the ratchet rod 342 is close to the sliding belt 41, the tail of the ratchet rod 342 is abutted with one end of the sliding belt 41. When the sliding belt 41 drives the ratchet rod 342 to rotate, the head of the ratchet rod 342 is separated from the ratchet wheel 341, and the locking spring 343 is elongated. When the ratchet rod 342 is away from the sliding belt 41, the locking spring 343 drives the ratchet rod 342 to reset, so that the ratchet rod 342 is re-clamped and locked with the ratchet wheel 341.

[0068] The outer clamp control assembly 34 further comprises a tension spring 345 and a reverse gear 346. The lower surface of the clamping box 31 is fixedly installed with a pulling rod 314. The transmission gear 322 is fixedly installed with a pulling rod 3221. One end of the tension spring 345 is hung and installed with the pulling rod 314, and the other end of the tension spring 345 is hung and installed with the pulling rod 3221. The reverse gear 346 is fixedly installed on one of the rotating shafts 321 and is adaptedly engaged with the tooth plate 42.

[0069] The ends of the two outer positioning clamps 32 on the same clamping box 31 away from the rotating shaft 321 are close to each other under the pulling of the tension spring 345. The ends of the two outer positioning clamps 32 on the same clamping box 31 away from the rotating shaft 321 are away from each other when the tooth plate 42 drives the reverse gear 346 to rotate.

[0070] As can be seen from the above, by arranging the sliding belt 41, the tooth plate 42, the rotating shaft 321, the ratchet wheel 341, the ratchet rod 342, the locking spring 343, the tension spring 345 and the reverse gear 346, the rotating direction of the ratchet rod 342 to the ratchet wheel 341 is limited. When the ratchet rod 342 is clamped with the ratchet wheel 341, the tension spring 345 can drive the rotating shaft 321 to rotate so that the outer positioning clamp 32 is clamped, but the rotating shaft 321 cannot be reversely rotated, so that the clamped outer positioning clamp 32 cannot be loosened, thereby reducing the influence of the vibration generated during the drilling and tapping of the workpiece on the clamping effect of the workpiece, thereby ensuring the machining precision. When the sliding belt 41 is in contact with the ratchet rod 342, the ratchet rod 342 is separated from the ratchet wheel 341. With the rotation of the rotating machining table 2, the tooth plate 42 is in contact with the reverse gear 346, so that the reverse gear 346 drives the rotating shaft 321 to reverse, so that the outer positioning clamp 32 is opened.

[0071] Therefore, the outer positioning clamps 32 keep open state when the clamping box 31 moves from the discharging station to the feeding station, the outer positioning clamps 32 gradually clamp the workpiece when the clamping box 31 moves from the feeding station to the drilling station, the outer positioning clamps 32 keep clamping the workpiece when the clamping box 31 moves from the drilling station to the tapping station, and the outer positioning clamps 32 gradually open when the clamping box 31 moves from the tapping station to the discharging station.

[0072] Embodiment Three

[0073] As shown in Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 , the embodiment is different from the above-mentioned embodiments in that the inner clamp control assembly 35 comprises a push block 351 and a sliding block 352, the inner wall of the clamping box 31 is provided with a sliding hole 315, the push block 351 is slidingly installed in the inside of the sliding hole 315, one end of the push block 351 slidingly abuts against the outer side of the control disc 4, the sliding block 352 is slidingly installed in the inside of the clamping box 31, and the two sides of the sliding block 352 are respectively rotatably provided with an inner rotating plate 353 and an outer rotating plate 354, the other end of the inner rotating plate 353 is rotatably connected with one side wall of the push block 351, and the other end of the outer rotating plate 354 is rotatably connected with one side wall of the inner positioning clamp 33.

[0074] The inner clamp control assembly 35 further comprises a compression spring 355, one end of the compression spring 355 is fixedly connected with the sliding block 352, and the other end of the compression spring 355 is fixedly connected with a fixed block 356, and the fixed block 356 is fixed in the inside of the clamping box 31.

[0075] When the push block 351 approaches the trap groove 43, the compression spring 355 automatically contracts and resets, so that the push block 351 is inserted into the inside of the trap groove 43, thereby making the inner positioning clamp 33 be pushed out to the outside.

[0076] As can be seen from the above, by arranging the push block 351, the sliding block 352, the sliding hole 315, the inner rotating plate 353, the outer rotating plate 354 and the compression spring 355, when the push block 351 slides on the outer surface of the control disc 4, the inner positioning clamp 33 keeps still, when the push block 351 moves to the position of the trap groove 43 arranged on the surface of the control disc 4, under the action of the pulling force of the compression spring 355, the push block 351 is inserted into the trap groove 43, so that the sliding block 352 slides under the pulling of the inner rotating plate 353, thereby making the inner positioning clamp 33 slide to the outside under the pulling of the sliding block 352 and the outer rotating plate 354, so that the workpiece can be ejected when the outer positioning clamps 32 are open.

[0077] Therefore, during the process of the clamping box 31 moving from the loading station to the drilling station, from the drilling station to the tapping station, and from the tapping station to the unloading station, the inner positioning fixture 33 remains stationary. During the process of the clamping box 31 moving from the drilling station to the tapping station, the inner positioning fixture 33 remains stationary until the clamping box 31 reaches the tapping station. When the push block 351 is inserted into the groove 43, it suddenly pushes the workpiece to the side.

[0078] The interior of the groove 43 is set as a sloping surface. During the rotation of the rotary processing table 2, the push block 351 is inserted into the groove 43 from the side with the greater depth inside the groove 43 and slides out from the other side of the groove 43.

[0079] As can be seen from the above, since the inside of the groove 43 is set as a sloping surface, the push block 351 inserted into the groove 43 can gradually slide out along the inner wall of the groove 43 as the rotary processing table 2 rotates, so that the pressure spring 355 gradually stretches and the inner positioning fixture 33 gradually retracts.

[0080] Therefore, as the clamping box 31 moves from the discharge station to the loading station, the inner positioning clamp 33 gradually retracts back to one side of the insertion port 311.

[0081] The clamping box 31 has symmetrically opened grooves 316 inside, and the slider 352 is slidably installed inside the groove 316. The sliding direction of the slider 352 is perpendicular to the sliding direction of the push block 351.

[0082] As can be seen from the above, the sliding groove 316 is used to limit the movement direction of the slider 352.

[0083] Example 4

[0084] like Figure 9 As shown, the difference between this embodiment and the above embodiment is that a motor 11 is fixedly installed on the upper surface of the worktable 1, and the drive end of the motor 11 is fixedly connected to the rotary processing table 2.

[0085] As can be seen from the above, motor 11 is used to drive the rotary processing table 2 to rotate.

[0086] Example 5

[0087] Please see Figure 1 - Figure 12 The present invention also discloses a method of using a rotary drilling and tapping machine, the specific steps of which are as follows:

[0088] Start the device; the rotary processing table 2 stops once every quarter revolution.

[0089] When the rotating machining table 2 stops rotating, the four clamping boxes 31 mounted thereon stop at the unloading station, the loading station, the drilling station and the tapping station respectively, and the drilling device 5 and the tapping device 6 process the workpieces stopped at the drilling station and the tapping station respectively;

[0090] The workpiece dropped from the unloading station is removed, and the workpiece to be drilled and tapped is placed into the socket 311 of the clamping box 31 stopped at the loading station;

[0091] Then the rotating machining table 2 continues to rotate, and the outer positioning clamps 32 keep open while the inner positioning clamps 33 gradually retract to one side of the socket 311 when the clamping box 31 moves from the unloading station to the loading station, the outer positioning clamps 32 gradually approach each other to clamp the workpiece while the inner positioning clamps 33 keep still when the clamping box 31 moves from the loading station to the drilling station, the outer positioning clamps 32 and the inner positioning clamps 33 keep clamping the workpiece when the clamping box 31 moves from the drilling station to the tapping station, and the outer positioning clamps 32 gradually open while the inner positioning clamps 33 keep still when the clamping box 31 moves from the tapping station to the unloading station, until the inner clamp control assembly 35 suddenly pushes the workpiece to the side when it contacts the trap 43.

[0092] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A CNC drilling and tapping combination machine tool, comprising a worktable, a rotary machining table, a drilling device, and a tapping device, characterized in that: The rotary machining table is rotatably mounted on the upper surface of the workbench, and the drilling device and tapping device are both fixedly mounted on the workbench. The rotary machining table is equipped with a clamping mechanism, which includes a clamping box, an outer positioning fixture, an inner positioning fixture, an outer fixture control component, and an inner fixture control component. The upper end of the clamping box has an insertion port communicating with its outer edge. One end of the outer positioning fixture is fixedly mounted with a rotating shaft, which is rotatably mounted inside the clamping box. The inner positioning fixture is slidably mounted inside the clamping box. A control panel is provided below the rotary machining table. The control panel is fixedly installed on the worktable. A sliding belt and a toothed plate are fixedly installed on the outer side of the control panel. A groove is opened on the outer side of the control panel. The rotating shaft can rotate when the outer clamping control component contacts the sliding belt. The outer positioning clamp opens as the rotary machining table rotates when the outer clamping control component contacts the toothed plate. The outer positioning clamp rotates and clamps after the outer clamping control component separates from the toothed plate. The inner positioning clamp pushes outward when the inner clamping control component contacts the groove.

2. The CNC drilling and tapping combination machine tool according to claim 1, characterized in that: The clamping box has two symmetrically arranged rotating shafts inside. The lower end of each rotating shaft passes through the inner bottom wall of the clamping box and extends to the bottom of the clamping box, where a transmission gear is fixedly installed. The opposing transmission gears are meshed together.

3. The CNC drilling and tapping combination machine tool according to claim 1, characterized in that: The outer clamp control assembly includes a ratchet, a ratchet bar, and a locking spring. The ratchet is located below the clamping box and is fixedly connected to the lower end of one of the rotating shafts. A rotating rod and a hanging rod are fixedly installed on the lower surface of the clamping box. The middle part of the ratchet bar is rotatably connected to the rotating rod, and the head of the ratchet bar is engaged with the ratchet. A hanging rod is fixedly installed at the tail of the ratchet bar. One end of the locking spring is hooked to the hanging rod, and the other end of the locking spring is hooked to the hanging rod. The tail of the ratchet bar abuts against one end of the slide when the clamping box approaches the slide, and the head of the ratchet bar separates from the ratchet wheel when the slide pushes the ratchet bar to rotate, causing the locking spring to be stretched. When the ratchet bar moves away from the slide, the locking spring pulls the ratchet bar back to its original position, so that the ratchet bar is re-engaged and locked with the ratchet wheel.

4. A CNC drilling and tapping combination machine tool according to claim 2, characterized in that: The outer clamp control assembly also includes a tension spring and a reversing gear. A pull rod is fixedly installed on the lower surface of the clamping box. A connecting rod is fixedly installed on the transmission gear. One end of the tension spring is connected to the pull rod, and the other end of the tension spring is connected to the connecting rod. The reversing gear is fixedly installed on one of the rotating shafts, and the reversing gear is adapted to mesh with the toothed plate. The ends of the two outer positioning clamps on the same clamping box that are away from the rotating shaft are brought closer to each other under the pull of the tension spring, and the ends of the two outer positioning clamps on the same clamping box that are away from the rotating shaft are moved away from each other when the toothed plate drives the reverse gear to rotate.

5. A CNC drilling and tapping combination machine tool according to claim 1, characterized in that: The inner clamp control assembly includes a push block and a slider. The inner wall of the clamping box has a sliding hole. The push block is slidably installed inside the sliding hole. One end of the push block is slidably attached to the outer side of the control panel. The slider is slidably installed inside the clamping box. An inner rotating plate and an outer rotating plate are rotatably installed on both sides of the slider. The other end of the inner rotating plate is rotatably connected to one side wall of the push block. The other end of the outer rotating plate is rotatably connected to one side wall of the inner positioning clamp.

6. A CNC drilling and tapping combination machine tool according to claim 5, characterized in that: The clamping box has symmetrically arranged sliding grooves inside, and the slider is slidably installed inside the sliding groove. The sliding direction of the slider is perpendicular to the sliding direction of the push block.

7. A CNC drilling and tapping combination machine tool according to claim 5, characterized in that: The inner clamp control assembly also includes a pressure spring, one end of which is fixedly connected to the slider, and the other end of which is fixedly connected to a fixing block, which is fixed inside the clamping box. The pressure spring automatically contracts and resets when the push block approaches the groove, causing the push block to insert into the groove, thereby causing the inner positioning clamp to push outward.

8. A CNC drilling and tapping combination machine tool according to claim 7, characterized in that: The interior of the groove is set as a sloping surface. As the rotary processing table rotates, the pusher is inserted into the groove from the side with the greater depth and slides out from the other side of the groove.

9. A CNC drilling and tapping combination machine tool according to claim 1, characterized in that: A motor is fixedly installed on the upper surface of the worktable, and the drive end of the motor is fixedly connected to the rotary machining table.

10. A method of using a rotary drilling and tapping machine tool, comprising a CNC drilling and tapping combination machine tool as described in any one of claims 1-9, characterized in that, The specific steps are as follows: The starting device stops the rotary processing table every quarter revolution. When the rotary machining table stops rotating, the four clamping boxes installed on it stop at the unloading station, loading station, drilling station and tapping station respectively. The drilling device and tapping device process the workpieces stopped at the drilling station and tapping station respectively. Remove the workpiece that has fallen from the discharge station and place the workpiece to be drilled and tapped into the slot on the clamping box that is stopped at the loading station. Then the rotary machining table continues to rotate. As the clamping box moves from the unloading station to the loading station, the outer positioning fixture remains open while the inner positioning fixture gradually retracts to one side of the slot. As the clamping box moves from the loading station to the drilling station, the outer positioning fixtures gradually move closer to each other to clamp the workpiece while the inner positioning fixture remains stationary. As the clamping box moves from the drilling station to the tapping station, both the outer and inner positioning fixtures remain clamped to the workpiece. As the clamping box moves from the tapping station to the unloading station, the outer positioning fixtures gradually open while the inner positioning fixture remains stationary until the inner fixture control component contacts the slot, suddenly pushing the workpiece to the side.

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