Tool changing structure of precision numerical control machining center

Abstract

The utility model discloses a tool changing structure of a precision numerical control machining center, which comprises a lathe, a sliding table is arranged in the lathe, a tool fixing structure is arranged above the sliding table, a moving structure is arranged at the bottom of the tool fixing structure, and the bottom of the moving structure is fixedly connected with the top of the sliding table. A tool storage structure is arranged on the rear side of the interior of the lathe, the tool storage structure comprises a mounting shell, an adjusting assembly is arranged in the mounting shell, a plurality of turning tools in an annular array are arranged in the adjusting assembly, and by arranging a tool fixing structure, the device can stably fix the tools; according to the tool changing structure of the precision numerical control machining center, the tool is replaced more easily, conveniently and rapidly, the time and energy of manual operation are greatly saved, the moving structure and the tool storage structure are arranged, the tool changing structure of the precision numerical control machining center can achieve the automatic tool changing function, and the machining efficiency and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control lathe technical field, concretely relates to a tool changing structure of precision numerical control machining center. BACKGROUND

[0002] With the development of modern manufacturing industry, precision numerical control machining center plays a more and more important role in the field of mechanical processing, wherein lathe processing is a part of mechanical processing, mainly two processing forms: one is to fix the turning tool, and process the workpiece not formed in rotation; the other is to fix the workpiece, and carry out precision processing through the high-speed rotation of the workpiece and the transverse and longitudinal movement of the turning tool (tool holder).

[0003] According to patent document CN111375802A, the numerical control lathe machining center is improved, and when in use, the impact force is evenly dispersed to the energy absorption pipe by the dispersion ring, is weakened through the energy absorption pipe, and is discharged to the arc guide rail inside through the guide rod by the sliding rod driven by the extrusion plate, so that the tail seat is blocked by the elastic impact piece to slow down the impact force, the ball screw and the stepping motor in the numerical control lathe are protected, and the precision of lathe processing is ensured; after the machining part is machined, the interaction force of the fixed plate and the compression spring effectively pushes the support plate left and right, so that the support plate can open the two clamping clamps, and the worker can directly take the machined part, the safety of work is improved, and the work efficiency of the worker is improved. The tool changing structure often has problems of complex structure, slow tool changing speed and poor stability, and it is difficult to meet the machining requirements of high precision and high efficiency

[0004] In the prior art, the turning tool is fixed through the screw on the tool holder, and when the turning tool is replaced, the worker needs to twist the screw, which not only wastes time, but also consumes physical strength, and reduces the work efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiencies of prior art, and provides a tool changing structure of precision numerical control machining center, so as to achieve the purpose of automatic tool changing.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a tool changing structure of precision numerical control machining center, including lathe, the inside of the lathe is provided with a sliding table, the top of the sliding table is provided with a tool fixing structure, the bottom of the tool fixing structure is provided with a moving structure, the bottom of the moving structure is fixedly connected with the top of the sliding table, and the rear side of the inside of the lathe is provided with a tool storage structure.

[0007] The tool fixing structure includes a fixing block, two installation grooves one are arranged on the upper side of each of the four sides of the fixing block, a motor shell is fixedly connected to the top of the fixing block corresponding to each of the four sides, a circular movable hole one is arranged on the inner wall top of the installation groove one corresponding to the motor shell, and the circular movable hole one penetrates into the interior of the motor shell.

[0008] The tool storage structure includes an installation shell, the rear side of the installation shell is fixedly connected to the inner wall rear side of the lathe, an adjusting assembly is arranged in the interior of the installation shell, and a plurality of turning tools in annular array are arranged in the interior of the adjusting assembly.

[0009] Preferably, the inner wall of the circular movable hole one is movably connected with a rotating shaft one, the top of the rotating shaft one is fixedly connected with a stepping motor one, the outer wall of the stepping motor one is fixedly connected with the inner wall of the motor shell, the bottom of the rotating shaft one is fixedly connected with a threaded rod one, the bottom of the threaded rod one is rotatably connected with the inner wall of the installation groove one, the outer wall of the threaded rod one is threadedly connected with a sliding block one, the upper and lower sides of the inner wall of the installation groove one on the other side of the four sides are fixedly connected with a sliding rod one, the outer wall of the sliding rod one is movably connected with a sliding sleeve one, one side of the sliding sleeve one and the sliding block one are fixedly connected with a pressing plate, and the bottom of the fixing block is fixedly connected with a fixed table.

[0010] Preferably, the moving structure includes a fixed plate, installation grooves two are arranged on the top of the left and right sides of the fixed plate, a motor groove is arranged on the front side of the fixed plate, a circular movable hole two is arranged on the inner wall rear side of the motor groove and penetrates into the interior of the left installation groove two, the inner wall of the circular movable hole two is movably connected with a rotating shaft two, the front end of the rotating shaft two is fixedly connected with a driving motor, the rear end of the rotating shaft two is fixedly connected with a threaded rod two, the rear end of the threaded rod two is rotatably connected with the inner wall of the left installation groove two, the outer wall of the threaded rod two is threadedly connected with a sliding block two, the front and rear sides of the inner wall of the right installation groove two are fixedly connected with a sliding rod two, the outer wall of the sliding rod two is movably connected with a sliding sleeve two, and the top of the sliding block two and the sliding sleeve two is fixedly connected with the bottom of the fixed table.

[0011] Preferably, the installation shell includes an installation block, a circular limiting groove is arranged on the front side of the installation block, a connecting groove is arranged on the top of the installation block, a connecting through hole is arranged on the inner wall of the connecting groove and penetrates into the interior of the circular limiting groove, and a cover plate is fixedly connected to the upper side of the inner wall of the connecting groove.

[0012] Preferably, the adjusting assembly includes a fixed disc, a plurality of tool grooves in annular array are arranged on the front side of the fixed disc, the inner wall of the tool groove is movably connected with the outer wall of the turning tool, the outer wall of the fixed disc is fixedly connected with a gear ring, the front and rear ends of the gear ring are fixedly connected with limiting baffle plates, and the inner wall of the limiting baffle plate is fixedly connected with the outer wall of the fixed disc.

[0013] Preferably, the outer wall of the limiting baffle disc is movably connected with the inner wall of the circular limiting groove, the outer wall of the gear ring is meshedly connected with a gear, the rear end of the gear is rotatably connected with the inner wall of the connecting groove, and the front end of the gear is fixedly connected with a second stepping motor.

[0014] Preferably, the rear side of the fixed disc is annularly arranged with driving grooves in number same as that of the tool grooves, the inner wall of the driving groove is forwardly provided with a circular through hole penetrating into the tool groove, the inner wall of the circular through hole is movably connected with a connecting column, the front end of the connecting column is fixedly connected with a push plate, the outer wall of the push plate is movably connected with the inner wall of the tool groove, the rear end of the connecting column is fixedly connected with an electric push rod, and the outer wall of the electric push rod is fixedly connected with the inner wall of the driving groove.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The tool fixing structure is arranged, so that the device can stably fix the tool, the tool replacement is more convenient and fast, and the time and effort of manual operation are greatly saved.

[0017] 2. The moving structure and the tool storage structure are arranged, so that the tool changing structure of the precision numerical control machining center can realize the automatic tool changing function, the machining efficiency and accuracy are improved, the suitable tool can be quickly selected and replaced according to the machining requirement, and the automation and flexibility of tool changing are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is a structural sectional view of the tool fixing structure of the utility model;

[0020] Figure 3 It is a structural sectional view of the moving structure of the utility model;

[0021] Figure 4 It is a structural view of the tool storage structure of the utility model;

[0022] Figure 5 It is a structural view of the installation shell of the utility model;

[0023] Figure 6 It is a structural view of the adjusting assembly of the utility model;

[0024] Figure 7 It is a partial structural sectional view of the adjusting assembly of the utility model.

[0025] In the figure: 1, lathe; 2, sliding table; 3, tool fixing structure; 4, moving structure; 5, tool storage structure; 31, fixed block; 32, mounting groove one; 33, motor shell; 34, rotating shaft one; 35, stepper motor one; 36, threaded rod one; 37, sliding rod one; 38, sliding block one; 39, sliding sleeve one; 30, lower pressing plate; 301, fixed table; 41, fixed plate; 42, mounting groove two; 43, motor groove; 44, rotating shaft two; 45, driving motor; 46, threaded rod two; 47, sliding block two; 48, sliding rod two; 49, sliding sleeve two; 51, mounting shell; 52, adjusting assembly; 53, turning tool; 511, mounting block; 512, circular limiting groove; 513, connecting groove; 514, connecting through hole; 515, cover plate; 521, fixed disc; 522, tool groove; 523, tooth ring; 524, limiting baffle disc; 525, gear; 526, stepper motor two; 527, driving groove; 528, circular through hole; 529, push plate; 520, connecting column; 5201, electric push rod. DETAILED DESCRIPTION

[0026] 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 other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Please refer to Figure 1 The utility model provides a kind of technical scheme: a tool changing structure of precision numerical control machining center, including lathe 1, the inside of lathe 1 is provided with sliding table 2, the top of sliding table 2 is provided with tool fixing structure 3, the bottom of tool fixing structure 3 is provided with moving structure 4, the bottom of moving structure 4 is fixedly connected with the top of sliding table 2, the inside rear side of lathe 1 is provided with tool storage structure 5;

[0028] Please refer to Figure 2The cutter fixing structure 3 comprises a fixing block 31, two installation grooves 32 are formed on the upper side of the front, rear, left and right sides of the fixing block 31, the top of the fixing block 31 is fixedly connected with a motor shell 33 corresponding to one side of the installation groove 32, the inner wall top of the installation groove 32 corresponding to the motor shell 33 is provided with a circular movable hole 1 penetrating into the interior of the motor shell 33, the inner wall of the circular movable hole 1 is movably connected with a rotating shaft 1 34, the top of the rotating shaft 1 34 is fixedly connected with a stepping motor 1 35, the outer wall of the stepping motor 1 35 is fixedly connected with the inner wall of the motor shell 33, the bottom of the rotating shaft 1 34 is fixedly connected with a threaded rod 1 36, the bottom of the threaded rod 1 36 is rotatably connected with the inner wall of the installation groove 32, the outer wall of the threaded rod 1 36 is threadedly connected with a sliding block 1 38, the upper and lower sides of the inner wall of the installation groove 32 in the other side of the four sides are fixedly connected with a sliding rod 1 37, the outer wall of the sliding rod 1 37 is movably connected with a sliding sleeve 1 39, the sliding sleeve 1 39 is fixedly connected with a pressing plate 30 on one side of the sliding block 1 38, the bottom of the fixing block 31 is fixedly connected with a fixing table 301, when it is needed to replace a certain cutter, the corresponding stepping motor 1 35 on the top is started to make the rotating shaft 1 34 rotate, thereby driving the threaded rod 1 36 to rotate, since the outer wall of the threaded rod 1 36 is threadedly connected with the sliding block 1 38, the sliding block 1 38 moves under the action of the rotation of the threaded rod 1 36, thereby driving the pressing plate 30 to move, at the same time, driving the sliding sleeve 1 39 and the outer wall of the sliding rod 1 37 to move, contacting the limiting fixing of the cutter, through the cutter in the interior of the fixing table 301 and the pressing plate 30, the stepping motor 1 35 is reversely started, so that the pressing plate 30 presses to fix the cutter, and different sizes of cutters can be adapted, the practicability of the device is increased.

[0029] Please refer to Figures 3-7The moving structure 4 comprises a fixed plate 41, installation grooves two 42 are formed on the top of the left and right sides of the fixed plate 41, a motor groove 43 is formed on the front side of the fixed plate 41, a circular movable hole two is formed in the inner wall of the motor groove 43 and penetrates to the inside of the left installation groove two 42, a rotating shaft two 44 is movably connected to the inner wall of the circular movable hole two, a driving motor 45 is fixedly connected to the front end of the rotating shaft two 44, a threaded rod two 46 is fixedly connected to the rear end of the rotating shaft two 44, the rear end of the threaded rod two 46 is rotatably connected to the inner wall of the left installation groove two 42, a sliding block two 47 is screw-connected to the outer wall of the threaded rod two 46, sliding rods two 48 are fixedly connected to the front and rear sides of the inner wall of the right installation groove two 42, a sliding sleeve two 49 is movably connected to the outer wall of the sliding rod two 48, the top of the sliding block two 47 and the sliding sleeve two 49 is fixedly connected to the bottom of the fixed table 301, the cutter storage structure 5 comprises an installation shell 51, the rear side of the installation shell 51 is fixedly connected to the inner wall of the rear side of the lathe 1, an adjusting assembly 52 is arranged in the inside of the installation shell 51, a plurality of turning tools 53 in a circular array are arranged in the inside of the adjusting assembly 52, the installation shell 51 comprises an installation block 511, a circular limiting groove 512 is formed on the front side of the installation block 511, a connecting groove 513 is formed on the top of the installation block 511, a connecting through hole 514 is formed in the inner wall of the connecting groove 513 and penetrates to the inside of the circular limiting groove 512, a cover plate 515 is fixedly connected to the inner wall of the connecting groove 513, the adjusting assembly 52 comprises a fixed disc 521, a plurality of tool grooves 522 in a circular array are formed on the front side of the fixed disc 521, the inner wall of the tool groove 522 is movably connected to the outer wall of the turning tool 53, a gear ring 523 is fixedly connected to the outer wall of the fixed disc 521, limit stop discs 524 are fixedly connected to the front and rear ends of the gear ring 523, the inner wall of the limit stop disc 524 is fixedly connected to the outer wall of the fixed disc 521, the outer wall of the limit stop disc 524 is movably connected to the inner wall of the circular limiting groove 512, a gear wheel 525 is meshingly connected to the outer wall of the gear ring 523, the rear end of the gear wheel 525 is rotatably connected to the inner wall of the connecting groove 513, a stepping motor two 526 is fixedly connected to the front end of the gear wheel 525, the bottom of the stepping motor two 526 is fixedly connected to the inner wall of the connecting groove 513, a plurality of driving grooves 527 are formed on the rear side of the fixed disc 521 in a circular array and have the same number as the tool grooves 522, a circular through hole 528 is formed in the inner wall of the front end of the driving groove 527 and penetrates to the inside of the tool groove 522, a connecting column 520 is movably connected to the inner wall of the circular through hole 528, a push plate 529 is fixedly connected to the front end of the connecting column 520, the outer wall of the push plate 529 is movably connected to the inner wall of the tool groove 522, an electric push rod 5201 is fixedly connected to the rear end of the connecting column 520, the outer wall of the electric push rod 5201 is fixedly connected to the inner wall of the driving groove 527, when the lower pressing plate 30 is lifted, the driving motor 45 is started to drive the rotating shaft two 44 to rotate, thereby driving the threaded rod two 46 to rotate, the threaded rod two 46 is rotated to drive the sliding block two 47 to move forward and backward on the outer wall of the threaded rod two 46, thereby driving the cutter fixing structure 3 to move,Simultaneously drive the sliding sleeve two 49 to slide on the outer wall of the sliding rod two 48, improve the stability when the tool fixing structure 3 moves, when the tool fixing structure 3 contacts the outer wall of the tool storage structure 5, start the stepper motor two 526 to make the gear 525 rotate, in turn drive the gear ring 523 to make the fixed disc 521 rotate, in turn drive the turning tool 53 to rotate in the inside of the mounting shell 51, so as to adjust to the position of the turning tool 53 to be replaced, start the electric push rod 5201 to make the connecting column 520 move, in turn drive the push plate 529 to move in the inside of the tool groove 522, push the turning tool 53 to be replaced out of the tool groove 522, at this time, the lower pressing plate 30 in the tool fixing structure 3 is in the open state, in turn drop the turning tool 53 to be replaced into the inside of the fixed table 301 and the lower pressing plate 30, and then start the stepper motor one 35 in reverse to make the lower pressing plate 30 press down to fix the turning tool 53, that is, the quick replacement of the turning tool 53 can be realized, after replacement, start the driving motor 45 in reverse to make the tool fixing structure 3 drive the replaced turning tool 53 to move to the working area of the lathe 1 for processing and use, convenient operation, realize the quick replacement of the turning tool 53, and improve the processing efficiency.

[0030] Working principle:

[0031] When it is necessary to replace a certain tool, start the corresponding stepper motor one 35 at the top to make the rotating shaft one 34 rotate, in turn drive the threaded rod one 36 to rotate, since the outer wall of the threaded rod one 36 is threadedly connected with the sliding block one 38, the sliding block one 38 moves under the action of the rotation of the threaded rod one 36, in turn drive the lower pressing plate 30 to move, simultaneously drive the sliding sleeve one 39 and the outer wall of the sliding rod one 37 to move, contact the limiting and fixing of the tool, when the tool is in the inside of the fixed table 301 and the lower pressing plate 30, start the stepper motor one 35 in reverse, make the lower pressing plate 30 press down to fix the tool, and can adapt to tools of different sizes, increase the practicability of the device;

[0032] When the lower plate 30 is lifted, the driving motor 45 is started to rotate the second shaft 44, thereby driving the second threaded rod 46 to rotate, and through the rotation of the second threaded rod 46, the slider 47 moves forward and backward on the outer wall of the second threaded rod 46, thereby driving the tool fixing structure 3 to move, and at the same time driving the sleeve 49 to slide on the outer wall of the second slide rod 48, thereby improving the stability of the tool fixing structure 3 when moving, when the tool fixing structure 3 contacts the outer wall of the tool storage structure 5, the second stepper motor 526 is started to rotate the gear 525, thereby driving the gear ring 523 to rotate the fixed disc 521, thereby driving the turning tool 53 to rotate in the inside of the installation shell 51, so as to adjust to the position of the turning tool 53 to be replaced, the connecting column 520 is moved by starting the electric push rod 5201, thereby driving the push plate 529 to move in the inside of the tool groove 522, and the turning tool 53 to be replaced is pushed out from the tool groove 522, at this time, the lower plate 30 in the tool fixing structure 3 is in the open state, thereby falling the turning tool 53 to be replaced into the inside of the fixed table 301 and the lower plate 30, and then the first stepper motor 35 is started in reverse, so that the lower plate 30 is pressed to fix the turning tool 53, that is, the quick replacement of the turning tool 53 can be realized, after replacement, the driving motor 45 is started in reverse, so that the tool fixing structure 3 drives the replaced turning tool 53 to move to the working area of the lathe 1 for processing and use, which is convenient to operate, realizes the quick replacement of the turning tool 53, and improves the processing efficiency.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tool changing structure of a precision CNC machining center, characterized in that: Including lathe (1), the inside of lathe (1) is provided with sliding table (2), the top of sliding table (2) is provided with tool fixing structure (3), the bottom of tool fixing structure (3) is provided with moving structure (4), the bottom of moving structure (4) is fixedly connected with the top of sliding table (2), the inside rear side of lathe (1) is provided with tool storage structure (5); The tool fixing structure (3) includes a fixed block (31), two installation grooves (32) are formed in the upper side of the front, rear, left and right sides of the fixed block (31), a motor housing (33) is fixedly connected to the top of the fixed block (31) corresponding to one side of the installation groove (32) in the four sides, and a circular movable hole (1) is formed in the inner wall top of the installation groove (32) corresponding to one side of the motor housing (33) in the four sides and penetrates into the interior of the motor housing (33). The tool storage structure (5) includes an installation shell (51), the rear side of the installation shell (51) is fixedly connected with the inner wall rear side of the lathe (1), the inside of the installation shell (51) is provided with an adjusting assembly (52), and the inside of the adjusting assembly (52) is provided with a plurality of turning tools (53) in annular array.

2. The tool changer of claim 1, wherein: The inner wall of the circular movable hole (1) is movably connected with a rotating shaft (34), the top of the rotating shaft (34) is fixedly connected with a stepping motor (35), the outer wall of the stepping motor (35) is fixedly connected with the inner wall of the motor housing (33), the bottom of the rotating shaft (34) is fixedly connected with a threaded rod (36), the bottom of the threaded rod (36) is rotatably connected with the inner wall of one side of the installation groove (32), the outer wall of the threaded rod (36) is threadedly connected with a sliding block (38), the upper and lower sides of the inner wall of the other side of the installation groove (32) in the four sides are fixedly connected with a sliding rod (37), the outer wall of the sliding rod (37) is movably connected with a sliding sleeve (39), one side of the sliding sleeve (39) and the sliding block (38) are fixedly connected with a pressing plate (30), and the bottom of the fixed block (31) is fixedly connected with a fixed table (301).

3. The tool changer of claim 1, wherein: the tool changer is a tool changer of a precision CNC machining center. The moving structure (4) includes a fixed plate (41), the left and right sides of the top of the fixed plate (41) are provided with mounting groove two (42), the front side of the fixed plate (41) is provided with motor groove (43), the rear side of the inner wall of the motor groove (43) is provided with a circular movable hole two penetrating into the left mounting groove two (42), the inner wall of the circular movable hole two is movably connected with the rotating shaft two (44), the front end of the rotating shaft two (44) is fixedly connected with the driving motor (45), the rear end of the rotating shaft two (44) is fixedly connected with the threaded rod two (46), the rear end of the threaded rod two (46) is rotatably connected with the inner wall of the left mounting groove two (42), the outer wall of the threaded rod two (46) is threadedly connected with the sliding block two (47), the inner wall of the right mounting groove two (42) is fixedly connected with the sliding rod two (48), the outer wall of the sliding rod two (48) is movably connected with the sliding sleeve two (49), the top of the sliding block two (47), the sliding sleeve two (49) is fixedly connected with the bottom of the fixed table (301).

4. The tool changer of claim 1, wherein: The mounting shell (51) includes a mounting block (511), the front side of the mounting block (511) is provided with a circular limiting groove (512), the top of the mounting block (511) is provided with a connecting groove (513), the inner wall of the connecting groove (513) is provided with a connecting through hole (514) penetrating into the circular limiting groove (512), the inner wall of the connecting groove (513) is fixedly connected with the top of the cover plate (515).

5. The tool changer of claim 1, wherein: The adjusting assembly (52) includes a fixed disc (521), the front side of the fixed disc (521) is provided with a plurality of circular array of cutter grooves (522), the inner wall of the cutter groove (522) is movably connected with the outer wall of the turning tool (53), the outer wall of the fixed disc (521) is fixedly connected with the gear ring (523), the front and rear ends of the gear ring (523) are fixedly connected with the limiting baffle disc (524), the inner wall of the limiting baffle disc (524) is fixedly connected with the outer wall of the fixed disc (521).

6. The tool changer of claim 5, wherein: The outer wall of the limiting baffle disc (524) is movably connected with the inner wall of the circular limiting groove (512), the outer wall of the gear ring (523) is meshingly connected with the gear (525), the rear end of the gear (525) is rotatably connected with the inner wall of the connecting groove (513), the front end of the gear (525) is fixedly connected with the step motor two (526), the bottom of the step motor two (526) is fixedly connected with the inner wall of the connecting groove (513).

7. The tool changer of claim 6, wherein: The rear annular array of the fixed disc (521) is provided with the same number of driving grooves (527) as the cutter grooves (522), the inner wall of the driving grooves (527) is provided with a circular through hole (528) penetrating into the cutter grooves (522), the inner wall of the circular through hole (528) is movably connected with a connecting column (520), the front end of the connecting column (520) is fixedly connected with a push plate (529), the outer wall of the push plate (529) is movably connected with the inner wall of the cutter grooves (522), and the rear end of the connecting column (520) is fixedly connected with an electric push rod (5201), and the outer wall of the electric push rod (5201) is fixedly connected with the inner wall of the driving grooves (527).

Images