CN212095434U

CN212095434U - Automatic tool changing device of cutting machine

Info

Publication number: CN212095434U
Application number: CN202020535560.8U
Authority: CN
Inventors: 李昕
Original assignee: Shanghai Youmai Cnc Technology Research Co ltd
Current assignee: Shanghai Youmai Cnc Technology Research Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-12-08
Anticipated expiration: 2030-04-13

Abstract

The utility model provides an automatic tool changer of a cutting machine, which fixes and clamps the tool handle through the fixed clamping jaw and the movable clamping jaw, and the tool is arranged on the tool handle; the first stepping motor drives the fixed disc to rotate so that different clamps are aligned with a main shaft of the cutting machine to change the tool; before tool changing, tool setting mechanism measures the height of the bottom end of the tool, through second step motor drives the slide bar shifts up, makes the bottom end of the tool with the block contact, the block moves down, makes the core process photoelectric switch then contradicts contact diaphragm sensor, through second step motor pivoted number of turns is confirmed the slide bar shifts up the distance, thereby confirms the height of the bottom end of the tool, accomplishes the tool setting. The utility model provides an automatic tool changer of cutting machine makes and can directly process after the new sword of cutting machine installation, need not to carry out the tool setting, saves process time, improves work efficiency.

Description

Automatic tool changing device of cutting machine

Technical Field

The utility model relates to a toolchanger field especially relates to an automatic toolchanger of cutting machine.

Background

The numerical control cutting machine is used for processing plane materials, and when the shape of the processed materials needs to be changed, only a numerical control program needs to be changed, and special process equipment such as a cam, a profiling mold, a sample plate or a drilling and boring mold is not needed. The method has the characteristics of high production efficiency and machining precision and stable machining quality. The economical numerical control cutting machine has the advantages of less investment, quick effect and simple system structure, and is more widely applied to medium and small enterprises.

At present, when a cutting machine is used for cutting, along with the increase of the service time of a cutter, the loss of the cutter is more obvious, the cutting performance of the cutter is poor, and generally, in order to avoid the influence of the loss of the cutter on the cutting effect and the cutting precision, the cutter needs to be changed regularly; in the prior art, a common tool changer comprises a rotary tool changing rest, a rotary tower type tool rest and an array type tool rest, a standby tool is generally fixed on a tool shank, the tool shank is placed on the tool rest, when the tool is changed by a cutting machine, an old tool is placed back on the tool rest according to a program, then a new tool on the tool rest is connected, and the tool changing is convenient and efficient. Because the tool shank is connected with the tool through the collet chuck, the relative position between the tool and the tool shank is uncertain, and the tool needs to be reset after the tool is replaced by the cutting machine. The steps are multiple, the time is consumed, and the processing efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model relates to an automatic tool changing device of cutting machine.

The utility model provides an automatic tool changer of a cutting machine, which comprises a base, wherein,

the middle part of the base is provided with a first stepping motor, an output shaft of the first stepping motor is connected with a worm screw rod, the worm screw rod is connected with a worm wheel, the first stepping motor is electrically connected with a controller, the worm wheel is fixedly connected with a tool magazine, the tool magazine is provided with a plurality of clamping mechanisms, the clamping mechanisms clamp and fix a tool handle, and the tool handle is fixedly connected with a tool;

set up tool setting mechanism on the base, tool setting mechanism includes the barrel, the barrel is fixed in the base, vertical sliding connection has the slide bar in the barrel, be provided with second step motor in the barrel, the output shaft of second step motor has drive screw, drive screw connects the slide bar, the top sliding connection block of slide bar, the block with there is the spring between the slide bar, the columniform core of internal connection of block, the vertical setting of core, there is photoelectric switch in the slide bar, the core is controlled to be inserted between photoelectric switch's light source and the sensor, second step motor and photoelectric switch electric connection the controller, be provided with the contact diaphragm sensor in the slide bar, the contact diaphragm sensor set up in photoelectric switch's downside.

Preferably, the tool magazine includes the fixed disk, fixed disk fixed connection in the worm wheel, the fixed disk with the worm wheel is coaxial to be set up, a plurality of connecting plates are connected at the top of fixed disk, the tip of connecting plate sets up fixture.

Preferably, fixture includes fixed clamping jaw and activity clamping jaw, fixed clamping jaw is fixed in the tip of connecting plate, activity clamping jaw sliding connection in the tip of connecting plate, fixed clamping jaw with the activity clamping jaw sets up relatively, fixed clamping jaw with activity clamping jaw opposite side semicircular in shape, fixed clamping jaw with the activity is cliied and is provided with the reference column, be provided with the draw-in groove on the handle of a knife, fixed clamping jaw with the centre gripping of activity clamping jaw is in the draw-in groove, be provided with the constant head tank in the draw-in groove, the reference column peg graft in the constant head tank.

Preferably, the tool setting mechanism is arranged on the base on the lower side of the clamping mechanism.

Preferably, a sealing film is connected between the cap and the sliding rod.

Compared with the prior art, the utility model discloses an automatic tool changer of cutting machine has following beneficial effect:

the utility model provides an automatic tool changer of a cutting machine, which fixes and clamps the tool handle through the fixed clamping jaw and the movable clamping jaw, and the tool is arranged on the tool handle; the first stepping motor drives the fixed disc to rotate so that different clamps are aligned with a main shaft of the cutting machine to change the tool; before tool changing, tool setting mechanism measures the height of the bottom end of the tool, through second step motor drives the slide bar shifts up, makes the bottom end of the tool with the block contact, the block moves down, makes the core process photoelectric switch then contradicts contact diaphragm sensor, through second step motor pivoted number of turns is confirmed the slide bar shifts up the distance, thereby confirms the height of the bottom end of the tool, accomplishes the tool setting. After a new cutter is installed on the main shaft of the cutting machine, the main shaft of the cutting machine is directly machined according to the finished cutter setting data without setting the cutter, so that the machining time is saved, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of an automatic tool changer of a cutting machine according to the present invention;

FIG. 2 is a schematic structural diagram of the tool setting mechanism and the controller shown in FIG. 1;

FIG. 3 is a schematic structural view of the clamping mechanism shown in FIG. 1;

fig. 4 is a schematic view of the structure of the end of the slide bar shown in fig. 2.

Reference numbers in the figures: 1. the tool setting device comprises a base, 2, a tool magazine, 21, a clamping mechanism, 211, a fixed clamping jaw, 212, a movable clamping jaw, 213, a positioning column, 214, a cylinder, 22, a fixed disc, 23, a connecting plate, 3, a tool, 31, a tool handle, 4, a tool setting mechanism, 41, a cylinder, 42, a sliding rod, 43, a second stepping motor, 44, a transmission screw, 45, a cover cap, 46, a spring, 47, a core body, 48, a photoelectric switch, 5, a first stepping motor, 51, a worm screw rod, 52, a worm wheel, 6, a controller, 7 and a contact diaphragm sensor.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a schematic structural diagram of an automatic tool changer of a cutting machine according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural diagram of the tool setting mechanism and the controller shown in FIG. 1; FIG. 3 is a schematic structural view of the clamping mechanism shown in FIG. 1; fig. 4 is a schematic view of the structure of the end of the slide bar shown in fig. 2. .

The utility model provides an automatic tool changing device of cutting machine, including base 1, on base 1 was fixed in the board of cutting machine, confirm the position of base 1 in cutting machine mechanical coordinates through the measurement.

The middle part of base 1 is provided with first step motor 5, the level of first step motor 5 sets up, the output shaft worm lead screw 51 of first step motor 5, rotate on the base 1 and connect worm wheel 52, the worm wheel 52 is parallel base 1 sets up, worm lead screw 51 connects worm wheel 52, first step motor 5 electric connection controller 6, fixed connection tool magazine 2 on the worm wheel 52, be provided with at least one vacancy that is used for placing old cutter on the tool magazine 2, the centre gripping is fixed with new sword on the tool magazine 2, and the cutting machine is placed old sword on the tool magazine 2, then follow tool magazine 2 selects new sword to install. In the specific implementation process, tool magazine 2 includes fixed disk 22, fixed disk 22 fixed connection in the top of worm wheel 52, fixed disk 22 with the coaxial setting of worm wheel 52, a plurality of connecting plates 23 are connected at the top of fixed disk 22, the connecting plate 23 is followed the uniform setting of radius direction of fixed disk 22, the tip of connecting plate 23 sets up fixture 21. The fixed tool handle 31 is positioned and clamped by the clamping mechanism 21, a collet is arranged at one end of the tool handle 31, a connecting buckle is arranged at the other end of the tool handle 31, the collet clamps and connects the tool 3, and the tool handle 31 is connected with a main shaft of the cutting machine through the buckle. The middle part of handle of a knife 31 is provided with circular shape draw-in groove, the cross-section of draw-in groove is outer wide isosceles trapezoid narrow in, follows evenly be provided with the locating hole in the draw-in groove.

The clamping mechanism 21 comprises a fixed clamping jaw 211 and a movable clamping jaw 212, the fixed clamping jaw 211 is fixed at the end of the connecting plate 23, the movable clamping jaw 212 is slidably connected at the end of the connecting plate 23, the movable clamping jaw 212 is connected to a cylinder 214, the cylinder is fixed at the connecting plate 23, the cylinder is connected with an air source through an electronic valve, the fixed clamping jaw 211 and the movable clamping jaw 212 are arranged oppositely, the opposite side of the fixed clamping jaw 211 and the opposite side of the movable clamping jaw 212 are semicircular and matched with the clamping groove, a positioning column 213 is arranged on the fixed clamping jaw 211 and the movable clamping jaw 212, the diameter of the positioning column 213 is equal to the inner diameter of the empty hole, and the positioning column 213 is inserted into the positioning. The electronic valve is electrically connected with the controller 6.

The tool setting mechanism 4 is arranged on the base 1 and arranged on the lower side of the clamping mechanism 21 on the base 1. The tool setting mechanism 4 comprises a cylinder 41, the cylinder 41 is perpendicular to the base 1 and fixed on the base 1, a slide rod 42 is vertically connected in the cylinder 41 in a sliding manner, a second stepping motor 43 is arranged in the cylinder 41, a transmission screw 44 is arranged on an output shaft of the second stepping motor 43, the transmission screw 44 is a ball transmission screw, and the transmission screw 44 is in threaded connection with the slide rod 42.

The top of the sliding rod 42 is slidably connected with a cap 45, a spring 46 is arranged between the inner side of the cap 45 and the sliding rod 42, a bellows-shaped sealing film is arranged between the cap 45 and the sliding rod 42, the sealing film surrounds the spring 46, a cylindrical core 47 is connected inside the cap 45, the core 47 is vertically arranged and extends to the sliding rod 42, a photoelectric switch 48 is arranged in the sliding rod 42, the photoelectric switch 48 comprises a light source and a photoelectric sensor which are oppositely arranged, the light source and the photoelectric sensor are respectively arranged at two sides of the sliding rod 42, the core 47 can be inserted between the light source and the sensor of the photoelectric switch 48, the second stepping motor 43 and the photoelectric switch 48 are electrically connected with the controller 6, a contact diaphragm sensor 7 is arranged in the sliding rod 42, and the contact diaphragm sensor 7 is arranged at the lower side of the photoelectric switch 48, the end of the core 47 can abut against the diaphragm of the contact diaphragm sensor 7.

The utility model discloses an automatic tool changer of cutting machine theory of operation as follows:

when the base 1 is used, the base is fixed on a machine table of a cutting machine, the cutter 3 is fixed on a collet chuck of the cutter handle 31, the collet chuck end of the cutter handle 31 faces downwards, the buckling end of the cutter handle 31 faces upwards, the cutter handle 31 is placed between the fixed clamping jaw 211 and the movable clamping jaw 212, the controller 6 controls the electronic valve to enable the air cylinder 214 to extend, the movable clamping jaw 212 clamps the cutter handle 31 in a clamping manner, and the positioning column 213 is inserted into a positioning groove in the cutter handle 31; before tool changing, the controller 6 controls the first stepping motor 5 to rotate, so that the worm screw 51 rotates to drive the worm wheel 52 to rotate, the clamping mechanism 2 clamping a new tool rotates to the upper side of the tool setting mechanism 4, the tool 3 aligns with the cap 45 of the tool setting mechanism 4, the controller 6 controls the second stepping motor 43 to rotate, the second stepping motor 43 causes the sliding rod 42 to vertically move upwards along the cylinder 41, the cap 45 at the top of the sliding rod 42 abuts against the tool 3, the cap 45 moves downwards, the core 47 connected with the cap 45 moves downwards to penetrate through the photoelectric switch 48, the core 47 shields light, the photoelectric switch 48 is triggered, the contact membrane sensor 7 is opened, and the rotation speed of the second stepping motor 43 is reduced, so that the sliding rod 42 slowly slides, the core body 47 slowly abuts against the contact diaphragm sensor 7, the contact diaphragm sensor 7 sends an electric signal to be transmitted to the controller 6, the controller 6 stops the second stepping motor 43 according to the signal of the contact diaphragm sensor 7 and determines the height position of the lowest part of the cutter 3 through the number of rotating turns of the second stepping motor 43, so that cutter setting is realized, and the controller 6 controls the second stepping motor 43 to rotate reversely, so that the sliding rod 42 descends; when the cutter is changed, the controller 6 controls the first stepping motor 5 to drive the fixed disc 22 to rotate, so that the clamping mechanism 2 aligns to a main shaft of the cutter, the main shaft of the cutter descends to be provided with an old cutter, the cutter handle 31 aligns to the clamping mechanism 2, the clamping mechanism 2 clamps and fixes the cutter handle 31, the main shaft of the cutter ascends, the first stepping motor 5 rotates, so that a new cutter is arranged at the top of the cutter handle 31, and the cutter main shaft descends to be connected with the cutter handle 31.

The automatic tool changing device of the cutting machine provided by the utility model fixes and clamps the tool handle 31 through the fixed clamping jaw and the movable clamping jaw, and the tool 3 is arranged on the tool handle 31; the first stepping motor 5 drives the fixed disc 22 to rotate so that different clamps are aligned with a main shaft of the cutting machine to change the tool; before tool changing, tool setting mechanism 4 measures the height of cutter 3 bottommost, through second step motor 43 drives slide bar 42 moves up, makes cutter 3 bottommost with cap 45 contacts, cap 45 moves down, makes core 47 pass through photoelectric switch 48 then contradict contact diaphragm sensor 7, confirms through second step motor 43 pivoted number of turns slide bar 42 moves up the distance, thereby confirms the height of cutter 3 bottommost, accomplishes the tool setting. After a new cutter is installed on the main shaft of the cutting machine, the main shaft of the cutting machine is directly machined according to the finished cutter setting data without setting the cutter, so that the machining time is saved, and the working efficiency is improved.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. An automatic tool changer of a cutting machine is characterized by comprising a base (1), wherein,

the middle of the base (1) is provided with a first stepping motor (5), an output shaft of the first stepping motor (5) is connected with a worm screw rod (51), the worm screw rod (51) is connected with a worm wheel (52), the first stepping motor (5) is electrically connected with a controller (6), the worm wheel (52) is fixedly connected with a tool magazine (2), the tool magazine (2) is provided with a plurality of clamping mechanisms (21), the clamping mechanisms (21) clamp and fix the tool shank (31), and the tool shank (31) is fixedly connected with a tool (3);

set up tool setting mechanism (4) on base (1), tool setting mechanism (4) includes barrel (41), barrel (41) are fixed in base (1), vertical sliding connection has slide bar (42) in barrel (41), be provided with second step motor (43) in barrel (41), the output shaft of second step motor (43) has drive screw (44), drive screw (44) are connected slide bar (42), the top sliding connection of slide bar (42) lid (45), there is spring (46) between lid (45) and slide bar (42), the columniform core of internal connection (47) of lid (45), core (47) vertical setting, there is photoelectric switch (48) in slide bar (42), core (47) controlled insertion between photoelectric switch (48)'s the light source and sensor, the second stepping motor (43) and the photoelectric switch (48) are electrically connected with the controller (6), a contact diaphragm sensor (7) is arranged in the sliding rod (42), and the contact diaphragm sensor (7) is arranged on the lower side of the photoelectric switch (48).

2. The automatic tool changer of the cutting machine according to claim 1, wherein the tool magazine (2) comprises a fixed disc (22), the fixed disc (22) is fixedly connected to the worm wheel (52), the fixed disc (22) and the worm wheel (52) are coaxially arranged, the top of the fixed disc (22) is connected with a plurality of connecting plates (23), and the end parts of the connecting plates (23) are provided with the clamping mechanisms (21).

3. Automatic tool changer for cutting machines according to claim 2, characterized in that the clamping mechanism (21) comprises a fixed jaw (211) and a movable jaw (212), the fixed clamping jaw (211) is fixed at the end part of the connecting plate (23), the movable clamping jaw (212) is connected to the end part of the connecting plate (23) in a sliding way, the fixed clamping jaw (211) and the movable clamping jaw (212) are oppositely arranged, the opposite sides of the fixed clamping jaw (211) and the movable clamping jaw (212) are semicircular, positioning columns (213) are arranged on the fixed clamping jaw (211) and the movable clamping jaw (212), a clamping groove is arranged on the knife handle (31), the fixed clamping jaw (211) and the movable clamping jaw (212) are clamped in the clamping groove, a positioning groove is arranged in the clamping groove, and the positioning column (213) is inserted in the positioning groove.

4. The automatic tool changer of a cutting machine according to claim 1, characterized in that the tool setting mechanism is arranged on the base (1) on the lower side of the clamping mechanism (21).

5. Automatic tool changer for cutting machines according to claim 1, characterized in that a sealing membrane is connected between the cap (45) and the slide (42).