Numerical control machining device stable in clamping

Abstract

The utility model relates to the technical field of numerical control machining equipment, in particular to a stable-clamping numerical control machining device which comprises a numerical control machining mechanism, a clamping mechanism and a clamping mechanism. The clamping mechanism is fixed on the table board of the machine tool; the lifting mechanism is fixed to the position, close to the clamping mechanism, in the machine tool and can conduct lifting work. And the two replacing mechanisms are fixed to the two ends of the lifting mechanism correspondingly, and the clamping frame can be rapidly replaced according to requirements. According to the utility model, through the arrangement of the lifting mechanism and the inclined frame, when a workpiece is machined, the replacement mechanism can move into a machine tool, and one port of the square groove is sealed through the inclined frame influenced by the spring I, so that cuttings are effectively prevented from entering the equipment, and precise parts in the equipment are prevented from being abraded and damaged by the cuttings; the occurrence frequency of equipment faults is reduced, the service life of the equipment is prolonged, and the maintenance cost of the equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control processing equipment technical field, specifically a kind of numerical control processing device of clamping stability. BACKGROUND

[0002] In the field of numerical control processing, clamping device is the key component to ensure the machining precision and quality of workpiece. With the rapid development of manufacturing industry, the shape and material of product are increasingly diversified, which puts forward higher requirements for the clamp of numerical control processing device.

[0003] The current widely used numerical control processing device with clamping stability has some deficiencies. When the clamp is adapted to various shapes of workpieces, it lacks the ability to tightly fit and stably clamp curved surfaces and special-shaped parts, which makes it difficult to ensure machining precision. At the same time, for workpieces made of different materials (such as metal and composite materials), the clamp cannot flexibly adjust the clamping force and method, which easily causes damage to the surface of the workpiece or unstable clamping. SUMMARY

[0004] The utility model aims at providing a kind of numerical control processing device with clamping stability to solve the problems raised in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A kind of numerical control processing device with clamping stability, comprising:

[0007] Numerical control processing mechanism, including machine tool, camera is fixedly connected in the top of machine tool;

[0008] Clamping mechanism, fixed on machine tool table top;

[0009] Lifting mechanism, fixed in machine tool interior close to clamping mechanism position, can carry out lifting work;

[0010] Replacement mechanism, two are provided, respectively fixed in the both ends of lifting mechanism, can quickly replace clamping frame according to demand.

[0011] Further, the numerical control processing mechanism comprises:

[0012] Square groove one, two are provided, respectively opened in machine tool table top and located at both sides of clamping mechanism;

[0013] Slide groove, two are provided, respectively opened in square groove one interior and located at both sides, oblique frame is slidably inserted in the interior of slide groove;

[0014] Spring one, fixed between one end of oblique frame and one side inner wall of slide groove.

[0015] Preferably, the clamping mechanism comprises:

[0016] A placing rack is fixed with the machine tool table, two square grooves are arranged on the outer wall of the placing rack at equal angles, and a rack is fixedly connected to the inside of each square groove;

[0017] A sliding frame is slidably arranged in the square groove, a double-shaft motor is fixedly connected to one side of the sliding frame, two end shafts of the double-shaft motor are fixedly connected with a straight gear, and the straight gear is in meshing transmission with the rack.

[0018] Preferably, the clamping mechanism comprises:

[0019] Two square grooves three are arranged on the outer walls of the sliding frame on both sides, respectively, a slope is slidably inserted into the square groove three, and a spring two is fixedly connected between the outer wall of the slope and the inside of the square groove three.

[0020] Preferably, the clamping mechanism comprises:

[0021] A multi-stage plate is fixed between one end of the square groove two and the sliding frame.

[0022] Preferably, the lifting mechanism comprises:

[0023] A first motor is fixed in the machine tool, a threaded rod one is fixedly connected to the rotating shaft of the first motor, a U-shaped frame one is screw-connected to the outer wall of the threaded rod one, and the outer wall of the U-shaped frame one is slidably inserted into the machine tool;

[0024] Two supporting tables are fixed at both ends of the U-shaped frame one, respectively.

[0025] Preferably, the changing mechanism comprises:

[0026] A square shell is fixed with the outer wall of the supporting table;

[0027] A second motor is fixed on the outer wall of the square shell, a threaded rod two is fixedly connected to the rotating shaft of the second motor, a U-shaped frame two is screw-connected to the outer wall of the threaded rod two, and the outer wall of the U-shaped frame two is slidably inserted into the inner wall of the square shell;

[0028] A rotating seat is fixed at one end of the square shell, a circular rod is rotatably connected in the rotating seat, and a threaded groove is arranged on the outer wall of the circular rod;

[0029] A third motor is fixed at one end of the rotating seat, and the rotating shaft is fixed at one end of the circular rod;

[0030] A square rod is screw-connected to the outer wall of the threaded groove, and a plurality of sliding rails are fixedly connected to the outer wall of the square rod at equal intervals;

[0031] A U-shaped frame three is slidably arranged in the sliding rail, and a spring three is fixedly connected between the outer wall of the U-shaped frame three and the inner wall of the sliding rail.

[0032] The limiting frame is slid on the outer wall of one side of the square shell, a group of square holes are formed in the outer wall of the limiting frame, and the square holes are in three plug connection with the U-shaped frame;

[0033] The square groove four is formed on the outer wall of one side of the limiting frame, square grooves five are formed at both sides in the square groove four, the square groove four is in plug connection with the sliding frame in the inside, and the square groove five is in plug connection with the inclined block in the inside;

[0034] The clamp is slid on the outer wall of one side of the limiting frame;

[0035] The pressure sensing gasket is fixed on the outer wall of the limiting frame and close to the clamp position.

[0036] Compared with the prior art, the beneficial effects of the utility model are:

[0037] 1. By setting the lifting mechanism and the inclined frame, the replacement mechanism is displaced into the machine tool during workpiece machining, and the inclined frame affected by the spring seals the square groove one port, effectively blocking the cuttings from entering the equipment interior, which avoids the wear and damage of the cuttings to the internal precision parts of the equipment, reduces the occurrence frequency of equipment failure, prolongs the service life of the equipment and reduces the equipment maintenance cost.

[0038] 2. The replacement mechanism can automatically replace different shape clamps on the placing frame, without manual replacement and adjustment of the clamp, greatly shortening the replacement time of the clamp, reducing the idle time of the equipment, improving the actual machining time length ratio of the machine tool, accelerating the production rhythm and significantly improving the overall machining efficiency.

[0039] 3. By the pressure sensing gasket, the clamping force of the clamp on the workpiece can be accurately adjusted according to the actual pressure feedback, the clamping force is adjusted in cooperation with the clamping mechanism, the workpiece is always provided with stable and appropriate clamping force, the stability of the workpiece in the machining process is ensured, the stability of the workpiece in the machining process is effectively improved, and in addition, the multistage plate is arranged between the square groove two port and the sliding frame, which can effectively seal the inside of the square groove two, prevent the cuttings from entering the inside of the square groove two and effectively improve the sealing performance of the clamping mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is the overall structure schematic diagram of the utility model;

[0041] Figure 2 It is the machine tool table structure schematic diagram in the utility model;

[0042] Figure 3 It is the clamping mechanism structure schematic diagram in the utility model;

[0043] Figure 4 It is the machine tool local structure schematic diagram in the utility model;

[0044] Figure 5 is the lifting mechanism structure schematic view in the utility model;

[0045] Figure 6 is the replacement mechanism structure schematic view in the utility model;

[0046] Figure 7 is the clamp structure schematic view in the utility model.

[0047] In the figure: 100, numerical control processing mechanism;110, machine tool;111, square groove one;112, sliding groove;120, camera;130, inclined frame;131, spring one;200, clamping mechanism;210, placing rack;211, square groove two;212, multistage plate;213, rack;214, spur gear;215, double shaft motor;216, square groove three;217, inclined block;218, spring two;219, sliding frame;300, lifting mechanism;310, No. motor;311, threaded rod one;312, U-shaped frame one;320, support table;400, replacement mechanism;410, square shell;411, No. 2 motor;412, threaded rod two;413, U-shaped frame two;420, rotating seat;421, round rod;422, threaded groove;423, square rod;424, slide rail;425, spring three;426, U-shaped frame three;427, No. 3 motor;430, limiting frame;431, square groove four;432, square groove five;433, square hole;434, pressure sensing gasket;435, clamp. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0049] Please refer to Figures 1-7The utility model discloses a kind of clamping stable numerical control processing devices, including numerical control processing mechanism 100: its numerical control processing mechanism 100 includes lathe 110, and camera 120 is fixedly connected in top inside lathe 110, its clamping mechanism 200 is fixed on lathe 110 mesa, its lifting mechanism 300 is fixed in lathe 110 inside close to clamping mechanism 200 position, can be lifted and worked, its replacement mechanism 400 is provided with two, respectively fixed in lifting mechanism 300 both ends, can be quickly replaced according to the demand to clamping frame, numerical control processing mechanism 100 includes following several parts: its square groove one 111 is provided with two, respectively set up in lathe 110 mesa and located clamping mechanism 200 both sides, its sliding slot 112 is provided with two, respectively set up in square groove one 111 inside and located both sides, and oblique frame 130 is slidably inserted in sliding slot 112 inside, spring one 131 is fixed between oblique frame 130 one end and the inner wall of one side of sliding slot 112, lifting mechanism 300 includes following several parts: its No. motor 310 is fixed in lathe 110 inside, and the rotating shaft of No. motor 310 is fixedly connected with threaded rod one 311, and threaded rod one 311 outer wall is screw-connected with U-shaped frame one 312, and U-shaped frame one 312 outer wall is slidably inserted with lathe 110 inside, its support table 320 is provided with two, respectively fixed in U-shaped frame one 312 both ends, by being provided with lifting mechanism 300 and oblique frame 130, when workpiece is processed, replacement mechanism 400 will displace to lathe 110, and by the oblique frame 130 affected by spring one 131, square groove one 111 port is sealed, effectively blocks that chip enters equipment inside.

[0050] The clamping mechanism 200 comprises the following parts: the placing frame 210 is fixed with the machine tool 110 table top, and two square grooves two 211 are opened at equal angles on the outer wall of the placing frame 210, and the rack 213 is fixedly connected at both sides in the square groove two 211, the sliding frame 219 slides in the square groove two 211, the double-shaft motor 215 is fixedly connected on one side of the sliding frame 219, the straight gears 214 are fixedly connected at both ends of the rotating shaft of the double-shaft motor 215, the straight gears 214 are in meshing transmission with the rack 213, the square groove three 216 is provided with two, which are respectively opened on the outer walls of the sliding frame 219 on both sides, the inclined block 217 is slidingly inserted in the square groove three 216, and the spring two 218 is fixedly connected between the outer wall of the inclined block 217 and the inner wall of the square groove three 216, the replacement mechanism 400 comprises the following parts: the square shell 410 is fixed with the outer wall of the support table 320, the second motor 411 is fixed on the outer wall of the square shell 410, the threaded rod two 412 is fixedly connected with the rotating shaft of the second motor 411, the U-shaped frame two 413 is rotationally connected with the threaded rod two 412, the rotating seat 420 is fixed on one end of the square shell 410, the circular rod 421 is rotatably connected in the rotating seat 420, the threaded groove 422 is opened on the outer wall of the circular rod 421, the third motor 427 is fixed on one end of the rotating seat 420, the rotating shaft is fixed with one end of the circular rod 421, the square rod 423 is screwed on the outer wall of the threaded groove 422, a plurality of sliding rails 424 are fixedly connected at equal intervals on the outer wall of the square rod 423, the U-shaped frame three 426 slides in the sliding rail 424, the spring three 425 is fixedly connected between the outer wall of the U-shaped frame three 426 and the inner wall of the sliding rail 424, the limiting frame 430 slides on one side of the outer wall of the square shell 410, a group of square holes 433 are opened on the outer wall of the limiting frame 430, the square hole 433 is inserted and matched with the U-shaped frame three 426, the square groove four 431 is opened on one side of the outer wall of the limiting frame 430, square grooves five 432 are opened at both sides in the square groove four 431, the square groove four 431 is inserted and matched with the sliding frame 219, and the square groove five 432 is inserted and matched with the inclined block 217, the clamp 435 slides on one side of the outer wall of the limiting frame 430, and the replacement mechanism 400 can automatically replace the clamps 435 of different shapes on the placing frame 210, without manual replacement and adjustment of the clamps 435.

[0051] The clamping mechanism 200 further comprises the following parts: the multi-stage plate 212 is fixed between the square groove two 211 and the sliding frame 219, and the replacement mechanism 400 further comprises the following parts: the pressure sensing gasket 434 is fixed on the outer wall of the limiting frame 430 close to the position of the clamp 435, and the pressure sensing gasket 434 can accurately adjust the clamping force of the clamp 435 on the workpiece according to the actual pressure feedback.

[0052] Specifically, during operation, the workpiece is placed on the placement rack 210, and the camera 120 identifies and detects the shape of the pre-clamping area of ​​the workpiece. Motor 310 drives the threaded rod 311 to rotate and engage with the U-shaped frame 312, causing the support platform 320 to move upwards. The support platform 320 contacts the inclined frame 130, which is then pressed into the slide groove 112 until the square groove 111 is fully exposed. The changing mechanism 400 is then placed on the table of the machine tool 110. Motor 427 drives the round rod 421 to rotate, causing the threaded groove 422 to engage with the square rod 423, moving the fixture 435 to be replaced into the square shell 410. Dual-axis motor 215 drives the spur gear 214 to rotate and engage with the rack 213, moving the slide 219 towards the changing mechanism 400. The slide 219 then engages with the square groove 431, while the inclined block 217... The spring 218 rebounds and extends outward into the square groove 5 432, limiting the corresponding limit frame 430. The second motor 411 drives the threaded rod 412 to rotate and engage with the U-shaped frame 413, causing the U-shaped frame 413 to slide into the square shell 410 and separate from the corresponding U-shaped frame 426. The spring 35 rebounds and causes the U-shaped frame 426 to separate from the corresponding square hole 433, releasing the limit of the clamp 435 by the replacement mechanism 400. The dual-axis motor 215 drives the clamp 435, which is now limited, to slide along the inside of the square groove 211 to clamp the workpiece. A pressure sensing pad 434 is provided between the clamp 435 and the limit frame 430. When the pressure sensing pad 434 is squeezed by the clamp 435, the pressure value is detected, thereby adjusting the clamping force of the clamp 435 on the workpiece.

[0053] Example 1

[0054] like Figures 4-5 As shown, in this embodiment, the CNC machining mechanism 100 includes the following parts: two square slots 111 are provided, respectively opened on the table of the machine tool 110 and located on both sides of the clamping mechanism 200; two sliding grooves 112 are provided, respectively opened inside the square slots 111 and located on both sides; and a slant bracket 130 is slidably inserted inside the sliding groove 112; a spring 131 is fixed between one end of the slant bracket 130 and the inner wall of one side of the sliding groove 112; the lifting mechanism 300 includes the following parts: a first motor 310 is fixed inside the machine tool 110; a threaded rod 311 is fixedly connected to the shaft of the first motor 310; a U-shaped frame 312 is screwed onto the outer wall of the threaded rod 311; and the outer wall of the U-shaped frame 312 is slidably inserted into the machine tool 110; and two support platforms 320 are provided, respectively fixed at both ends of the U-shaped frame 312.

[0055] In this embodiment, the first motor 310 drives the threaded rod 311 and the U-shaped frame 312 to rotate, drives the support table 320 to move upwards, the support table 320 contacts the inclined frame 130, the inclined frame 130 is extruded to slide into the chute 112, until the square groove 111 is completely exposed, the replacement mechanism 400 is sent to the table top of the machine tool 110, by setting the lifting mechanism 300 and the inclined frame 130, when the workpiece is processed, the replacement mechanism 400 will be displaced into the machine tool 110, and the square groove 111 port is sealed by the inclined frame 130 affected by the spring 131, effectively blocking the cutting chips from entering the inside of the equipment, which avoids the wear and damage of the cutting chips to the internal precision parts of the equipment, reduces the frequency of equipment failure, prolongs the service life of the equipment, and reduces the equipment maintenance cost.

[0056] As Figure 3 , Figure 6 and Figure 7As shown, in the embodiment, the clamping mechanism 200 comprises the following parts: the rack 210 is fixed on the table top of the machine tool 110, two square grooves 211 are formed on the outer wall of the rack 210 at equal angles, and the rack gears 213 are fixed on both sides of the inner part of the square grooves 211; the sliding rack 219 slides in the square grooves 211, the double-shaft motor 215 is fixed on one side of the sliding rack 219, the spur gears 214 are fixed on both ends of the rotating shaft of the double-shaft motor 215, the spur gears 214 are in meshing transmission with the rack gears 213, the square grooves 216 are provided with two square grooves 216, which are respectively formed on the outer walls of both sides of the sliding rack 219, the inclined blocks 217 slide and are inserted in the square grooves 216, and the springs 218 are fixed between the outer wall of the inclined blocks 217 and the inner part of the square grooves 216; the replacement mechanism 400 comprises the following parts: the square shell 410 is fixed on the outer wall of the support table 320, the No.2 motor 411 is fixed on the outer wall of the square shell 410, the threaded rod 412 is fixed on the rotating shaft of the No.2 motor 411, the U-shaped frame 413 is screwed on the outer wall of the threaded rod 412, and the U-shaped frame 413 is slide and is inserted in the inner wall of the square shell 410; the rotating seat 420 is fixed on one end of the square shell 410, the circular rod 421 is rotatably connected in the rotating seat 420, the threaded groove 422 is formed on the outer wall of the circular rod 421, the No.3 motor 427 is fixed on one end of the rotating seat 420, the rotating shaft is fixed on one end of the circular rod 421, the square rod 423 is screwed on the outer wall of the threaded groove 422, a plurality of sliding rails 424 are fixed on the outer wall of the square rod 423 at equal intervals, the U-shaped frame 426 slides in the sliding rails 424, the springs 425 are fixed between the outer wall of the U-shaped frame 426 and the inner wall of the sliding rails 424, the limiting frame 430 slides on one side of the outer wall of the square shell 410, a plurality of square holes 433 are formed on the outer wall of the limiting frame 430, the square holes 433 are inserted and matched with the U-shaped frame 426, the square groove 431 is formed on one side of the outer wall of the limiting frame 430, square grooves 432 are formed on both sides of the inner part of the square groove 431, the inner part of the square groove 431 is inserted and matched with the sliding rack 219, the inner part of the square groove 432 is inserted and matched with the inclined block 217, and the clamp 435 slides on one side of the outer wall of the limiting frame 430.

[0057] In specific implementation, the third motor 427 drives the rotation of the round rod 421, the screw groove 422 and the square rod 423, the clamp 435 to be replaced is moved into the square shell 410, the double-shaft motor 215 drives the rotation of the straight gear 214 and the rotation with the rack 213, the carriage 219 is moved to the replacement mechanism 400, the carriage 219 is inserted into the square groove four 431, the inclined block 217 is extended into the square groove five 432 under the influence of the spring two 218, the corresponding limiting frame 430 is limited, the second motor 411 drives the rotation of the threaded rod two 412 and the rotation with the U-shaped frame two 413, the U-shaped frame two 413 is slid to one side of the square shell 410, separated from the corresponding U-shaped frame three 426, under the influence of the spring three 425, the U-shaped frame three 426 is separated from the corresponding square hole 433, the limiting of the clamp 435 by the replacement mechanism 400 is released, through the camera 120 arranged at the top of the machine tool 110, the current situation of the workpiece can be monitored in real time, according to the monitored information, the system can automatically select the most suitable clamp 435 for replacement, realize the intelligent switching of the clamp 435, the precise selection based on the actual situation of the workpiece improves the adaptability of the clamp 435 and the workpiece, further guarantees the machining precision, improves the stability of the product quality, through the replacement mechanism 400, different shapes of clamps 435 can be automatically replaced on the placement rack 210, manual replacement and adjustment of the clamp 435 are not needed, the time for replacing the clamp 435 is greatly shortened, the idle time of the equipment is reduced, the actual machining time of the machine tool 110 is improved, the production rhythm is accelerated, and the overall machining efficiency is significantly improved.

[0058] Embodiment two

[0059] As shown in Figure 3 and Figure 7 In this embodiment, the clamping mechanism 200 further includes the following parts: the multistage plate 212 is fixed between the square groove two 211 and the carriage 219, the replacement mechanism 400 further includes the following parts: the pressure sensing gasket 434 is fixed on the outer wall of the limiting frame 430 close to the clamp 435.

[0060] In specific implementation, the double-shaft motor 215 drives the clamps 435 after limiting to slide along the inside of the square groove two 211, clamps the workpiece, and the pressure sensing gasket 434 is arranged between the clamps 435 and the limiting frame 430, when the pressure sensing gasket 434 is extruded from the clamps 435, the pressure value is detected, so as to adjust the clamping force of the clamps 435 on the workpiece, through the pressure sensing gasket 434, the clamping force of the clamps 435 on the workpiece can be accurately adjusted according to the actual pressure feedback, cooperate with the clamping mechanism 200 to adjust the clamping force, always provide stable and appropriate clamping force for the workpiece, ensure that the workpiece remains stable during machining, effectively improve the stability of the workpiece during machining, in addition, the multi-stage plate 212 is arranged between the square groove two 211 port and the sliding frame 219, which can effectively seal the inside of the square groove two 211, prevent the cutting chips from entering the inside of the square groove two 211, and effectively improve the sealing performance of the clamping mechanism 200.

[0061] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be considered as limiting the involved claims.

[0062] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A clamped-stable numerical control processing device, characterized by, The utility model relates to a numerical control processing mechanism, including lathe, the top fixed connection has camera in lathe, Clamping mechanism, fixed on the machine tool table top, Lifting mechanism, fixed in the lathe interior near the clamping mechanism position, can carry out lifting work, Replacement mechanism, provided with two, fixed at the both ends of lifting mechanism respectively, can according to the demand, to the quick replacement of clamping frame. Numerical control processing mechanism includes:

2. The clamped stable numerical control machining apparatus according to claim 1, wherein Square groove one, provided with two, respectively located in the both sides of clamping mechanism on the machine tool table top, Slide groove, provided with two, respectively located in the both sides in square groove one inside, the slide groove inside slidingly inserts inclined frame, Spring one, fixed between the one end of inclined frame and the inner wall of slide groove one side. Clamping mechanism includes:

3. The clamped stable numerical control machining apparatus according to claim 2, wherein Placement frame, fixed with machine tool table top, two square grooves two are equally opened on the outer wall of placement frame, and the both sides of the square groove two inside are fixedly connected with rack, Slide, sliding in square groove two inside, the one side of slide is fixedly connected with double-shaft motor, and the both ends of double-shaft motor are fixedly connected with spur gears, and the spur gears are engaged with the rack. Clamping mechanism includes:

4. The clamped stable numerical control machining apparatus according to claim 3, wherein Square groove three, provided with two, respectively located on the both sides of slide, and the inclined block is slidingly inserted into the square groove three inside, and the spring two is fixedly connected between the outer wall of inclined block and the inside of square groove three. Clamping mechanism includes:

5. The clamped stable numerical control machining apparatus according to claim 4, wherein Multi-stage plate, fixed between the one end of square groove two and slide. Lifting mechanism includes:

6. The clamped stable numerical control machining apparatus according to claim 5, wherein No. One motor, fixed with the inside of lathe, and the rotating shaft of no. One motor is fixedly connected with threaded rod one, and the outer wall of threaded rod one is screw-connected with U-shaped frame one, and the outer wall of U-shaped frame one is slidingly inserted into the inside of lathe, Supporting table, provided with two, respectively fixed at the both ends of U-shaped frame one. Replacement mechanism includes:

7. The clamped stable numerical control machining apparatus according to claim 6, wherein Square shell, fixed with the outer wall of supporting table, No. Two motor, fixed on the outer wall of square shell, and the rotating shaft of no. Two motor is fixedly connected with threaded rod two, and the outer wall of threaded rod two is screw-connected with U-shaped frame two, and the outer wall of U-shaped frame two is slidingly inserted into the inner wall of square shell, Rotary seat, fixed at the one end of square shell, and the rotary connection of rotary seat inside has round rod, and the outer wall of round rod is provided with screw groove, No. Three motor, fixed at the one end of rotary seat, and the rotating shaft is fixed with one end of round rod, Square rod, screw-connected on the outer wall of screw groove, and the outer wall of square rod is fixedly connected with a plurality of slide rails at equal intervals, U-shaped frame three, sliding in slide rail inside, and the spring three is fixedly connected between the outer wall of U-shaped frame three and the inner wall of slide rail, Limiting frame, sliding on the outer wall of one side of square shell, and a group of square holes are formed on the outer wall of limiting frame, Square groove four, located on the outer wall of one side of limiting frame, and square groove five is formed in the both sides of square groove four inside, and the slide of slide is matched with the inside of square groove four, and the slide of slide is matched with the inside of square groove five, Clamp, sliding on the outer wall of one side of limiting frame, Pressure sensing gasket, fixed on the outer wall of limiting frame near the clamp position. ​

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