A floating drilling and tapping tool magazine

Abstract

The present invention provides a floating drilling and tapping tool magazine, which includes a mounting chassis, a rotating drive device, and a knife claw. The knife claw includes a knife claw seat, a knife claw main body, a first spring, a guide rod, and two knife arm assemblies. The knife claw seat includes a seat body and a sleeve part. The guide rod is movably arranged in the sleeve part. The tail end of the sleeve part is detachably connected with an end cover, and the first spring abuts between the end cover and one end of the guide rod. A knife claw door panel is fixed to the outside of the knife claw main body. Notches are provided on both sides of the knife claw door panel, and a brush strip is provided on the notch. The knife claw main body includes a knife arm mounting plate, and the knife arm assembly includes a knife-locking arm and a knife-locking pin. Both side walls of the knife arm mounting plate are provided with a swinging movable groove, and the knife-locking arm is hinged on the swinging movable groove. A spring accommodating path is provided between the two swinging movable grooves, and a second spring abutting between one end of the two knife-locking arms is provided in the spring accommodating path, which can reduce tool change interference, improve tool change efficiency, and improve the service life of the tool magazine.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control tool magazines, in particular to a floating drilling and tapping tool magazine. Background Art

[0002] A tool magazine system is a device used on CNC machine tools to provide the tools needed for automated machining and automatically change tools. It includes an automatic tool changer and a magazine capable of storing multiple tools, transforming traditional, human-centric production methods. Controlled by computer programs, it can handle a variety of machining operations, such as milling, drilling, boring, and tapping, significantly shortening machining times and reducing production costs—a key advantage of tool magazine systems.

[0003] The knife claw is an important component of the tool magazine, used to hold the tool. The positioning device of the knife claw of the tool magazine on the market is exposed to the outside, which has poor protection. As a result, when the machine tool is processing parts, metal scraps will splash and stick to the knife claw mechanism, causing interference with the tool magazine tool change and the risk of damaging the functional components of the machine tool. In addition, the two knife-holding pins of the knife claw are set to move laterally. During the process of installing or removing the tool, the knife-holding pins need to overcome the large spring force to retract, which affects the efficiency of tool change and increases the wear of the knife-holding pin and the tool. There is a problem of loud tool change noise, which affects the service life of the tool magazine. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a floating drilling and tapping tool magazine, which reduces tool change interference, improves tool change efficiency, reduces wear of the tool magazine and cutting tools, and increases the service life of the tool magazine.

[0005] The above technical problems can be solved by a floating drilling and tapping tool magazine provided by the present invention, comprising a mounting chassis, a rotating drive device arranged at the top center of the mounting chassis, and knife claws evenly distributed on the mounting chassis, the knife claws comprising a knife claw seat, a knife claw body, a first spring, a guide rod, and two knife arm assemblies, the knife claw seat comprising a seat body portion fixedly connected to the top of the mounting chassis, a sleeve portion connected to one side of the seat body portion, one end of the knife claw body being hinged on the seat body portion, the guide rod being movably arranged in the sleeve portion, the tail end of the sleeve portion being detachably connected to an end cover, the end cover being used to close the tail end of the sleeve portion, the first spring being abutted between the end cover and one end of the guide rod, the guide rod The other end is hinged with a connecting rod, and the outer side of the knife claw body is fixedly connected to the knife claw door plate, and the other end of the connecting rod is hinged on the outer wall of the knife claw door plate. Notches are symmetrically provided on both sides of the knife claw door plate, and a brush strip for filling the notch is provided on the notch. The knife claw body includes a knife arm mounting plate, and the knife arm assembly includes a knife buckle arm and a knife buckle pin. Both side walls of the knife arm mounting plate are provided with a swinging movable groove, the knife buckle arm is hinged on the swinging movable groove, and the knife buckle pin is fixedly connected to the inner side wall of the knife buckle arm, and one end of the knife buckle pin is provided with a spherical end, and a spring accommodating path is provided between the two swinging movable grooves, and a second spring is provided in the spring accommodating path to abut between one end of the two knife buckle arms.

[0006] Preferably, both side walls of the seat body are penetrated by channels connected to the inner ring of the sleeve portion, and positioning components are provided on both sides of the seat body. The positioning components include a positioning nut threadedly connected to the outlet end of the channel, a positioning pin movably set in the channel, and a third spring abutting between the positioning pin and the positioning nut. An annular positioning groove is provided on the outer peripheral edge of the guide rod, and the head end of the positioning pin abuts on the annular positioning groove.

[0007] Preferably, a first annular groove is provided on the inner circumference of the tail end of the sleeve portion, a first retaining spring matching the first annular groove is provided on the first annular groove, and the end cover abuts between one end face of the first retaining spring and one end of the first spring.

[0008] Preferably, a first guide sleeve is provided in the sleeve portion and is loosely matched with the sleeve portion. The first guide sleeve is matched with the guide rod, and the guide rod is movably provided in the first guide sleeve; a second guide sleeve is provided in the channel and is loosely matched with the channel. The second guide sleeve is matched with the positioning pin, and the positioning pin is movably provided in the second guide sleeve.

[0009] Preferably, a spring accommodating groove is provided at one end of the guide rod, and the first spring is provided in the spring accommodating groove and one end thereof abuts against the inner end surface of the spring accommodating groove.

[0010] Preferably, a knife-buckle head is provided at one end of the knife-buckle arm, a limiting portion is provided on one end surface of the knife-buckle head, a limiting notch matching the limiting portion is provided on one end surface of the knife arm mounting plate, a first pin hole connected to the swinging movable groove is provided on the knife arm mounting plate, a second pin hole corresponding to the first pin hole is provided on the knife-buckle arm, a pin is connected between the first pin hole and the second pin hole, a second annular groove is provided on the outer edge of one end of the pin, and a second retaining spring is clamped on the second annular groove.

[0011] Preferably, a through hole is provided on the head of the buckle knife, a T-shaped sleeve matching the through hole is provided in the through hole, the inner ring of the T-shaped sleeve is matched with the buckle knife pin, the buckle knife pin is inserted in the T-shaped sleeve, a third annular groove is provided on the outer edge of one end of the buckle knife pin, and a third retaining spring is clamped on the third annular groove.

[0012] Preferably, a first limiting column is provided on the inner side wall of one end of the knife arm, and one end of the second spring is sleeved on the first limiting column; a second limiting column is provided on the inner side wall of one end of the positioning pin, and one end of the third spring is sleeved on the second limiting column.

[0013] Preferably, a U-shaped knife clamping groove is provided at one end of the knife arm mounting plate, and a limiting plate is connected to the U-shaped knife clamping groove by screws.

[0014] The present invention provides a floating drilling and tapping tool magazine in which tools are retained by two tool-retaining pins. During tool changes, a tool-changing mechanism applies force to the tool claw body, causing it to rotate outward. This causes a guide rod to move along a sleeve portion and compress a first spring. When the tool claw door panel is opened, the tool-retaining mechanism removes the tool from the tool claw body. When the tool contacts the two spherical ends, it causes the two tool-retaining arms to swing outward, compressing the second spring. Once the two tool-retaining pins disengage from the tool, the tool can be removed from the tool claw. Because the tool-retaining arms are hinged to the swinging slots, they can be configured as force-saving levers based on the principle of leverage. This means that only a small amount of force is required to drive the tool-retaining arms to rotate, overcoming the elastic force of the second spring. This reduces tool-changing resistance, noise, and efficiency, while also reducing wear on the tool-retaining pins and tool. After tool removal is complete, the guide rod returns to its original position under the elastic force of the first spring, causing the tool claw door panel to return to its original position and close, completing the closure of the tool claw. The guide rod is set in the sleeve part, and the tail end of the sleeve part is closed with an end cover to prevent waste from entering the sleeve part and ensure smooth movement of the guide rod. When the knife claw door panel is opened and closed, the brush strips on both sides of the knife claw door panel can sweep the contact position of the two knife claw door panels to prevent waste from adhering to both sides of the knife claw door panel and causing jamming in opening and closing between adjacent knife claw door panels, thereby preventing waste from entering the tool magazine and improving the service life of the tool magazine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The schematic diagram of the external structure of the present invention is illustrated.

[0016] Figure 2 The figure shows the external structure of the knife claw of the present invention.

[0017] Figure 3 The exploded structural diagram of the knife claw of the present invention is illustrated.

[0018] Figure 4 A cross-sectional view illustrating a first angle of the knife claw of the present invention is shown.

[0019] Figure 5 A cross-sectional view at a second angle is shown for illustrating the knife claw of the present invention.

[0020] Figure 6 This is a cross-sectional view illustrating a third angle of the knife claw of the present invention.

[0021] Description of the accompanying figures: mounting chassis 1, rotary drive device 2, knife claw 3, knife claw seat 30, seat body 300, sleeve portion 301, end cover 301a, first retaining spring 301b, channel 302, first guide sleeve 303, second guide sleeve 304, knife claw door panel 310, brush strip 311, knife arm mounting plate 312, swing movable groove 312a, spring accommodating channel 312b, limiting notch 312c, U-shaped knife clamping groove 312d, limiting plate 312e, first spring 32, guide Directional rod 33, connecting rod 330, annular positioning groove 331, spring accommodating groove 332, knife arm assembly 34, knife-locking arm 340, first limiting column 340a, knife-locking pin 341, spherical end 341a, knife-locking head 342, limiting portion 342a, through hole 342b, pin 343, second retaining spring 343a, T-shaped sleeve 344, third retaining spring 345, positioning assembly 35, positioning nut 350, positioning pin 351, second limiting column 351a, third spring 352. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments.

[0023] Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present disclosure.

[0024] refer to Figures 1-6 .

[0025] The present invention provides a floating drilling and tapping tool magazine, comprising a mounting chassis 1, a rotary drive device 2 arranged at the top center of the mounting chassis 1, and knife claws 3 evenly distributed on the mounting chassis 1, the knife claw 3 comprising a knife claw seat 30, a knife claw body 31, a first spring 32, a guide rod 33, and two knife arm assemblies 34, the knife claw seat 30 comprising a seat body portion 300 fixedly connected to the top of the mounting chassis 1, a sleeve portion 301 connected to one side of the seat body portion 300, one end of the knife claw body 31 is hinged on the seat body portion 300, the guide rod 33 is movably arranged in the sleeve portion 301, the tail end of the sleeve portion 301 is detachably connected to an end cover 301a, the end cover 301a is used to close the tail end of the sleeve portion 301, the first spring 32 abuts between the end cover 301a and one end of the guide rod 33, the other end of the guide rod 33 is hinged to a connecting rod 330, The outer side of the claw body 31 is fixedly connected to the knife claw door panel 310, and the other end of the connecting rod 330 is hinged to the outer side wall of the knife claw door panel 310. Notches are symmetrically provided on both sides of the knife claw door panel 310, and brush strips 311 are provided on the notches to fill the gaps. The knife claw body 31 includes a knife arm mounting plate 312, and the knife arm assembly 34 includes a knife-catching arm 340 and a knife-catching pin 341. Both side walls of the knife arm mounting plate 312 are provided with a swinging movable groove 312a, the knife-catching arm 340 is hinged on the swinging movable groove 312a, and the knife-catching pin 341 is fixedly connected to the inner side wall of the knife-catching arm 340. One end of the knife-catching pin 341 is provided with a spherical end 341a, and a spring accommodating channel 312b is provided between the two swinging movable grooves 312a, and a second spring 313 is provided in the spring accommodating channel 312b, which abuts between one end of the two knife-catching arms 340.

[0026] When the tool is to be removed from the tool claw 31 by the two knife-catching pins 341, the tool claw 31 is locked. After the knife is removed, the guide rod 33 is reset under the elastic force of the first spring 32, and the knife claw door panel 310 is reset and closed, completing the closure of the knife claw 3. The guide rod 33 is set in the sleeve portion 301, and the end of the sleeve portion 301 is sealed with an end cap 301a to prevent waste from entering the sleeve portion 301 and ensure smooth movement of the guide rod 33. When the knife claw door panels 310 are opened and closed, the brush strips 311 on both sides of the knife claw door panels 310 can sweep the contact area between the two knife claw door panels 310 to prevent waste from adhering to the sides of the knife claw door panels 310 and causing the opening and closing between adjacent knife claw door panels 310 to jam, thereby preventing waste from entering the tool magazine and increasing the service life of the tool magazine.

[0027] Based on the above embodiment, both side walls of the seat body 300 are penetrated by channels 302 connected to the inner circle of the sleeve portion 301, and both sides of the seat body 300 are provided with positioning components 35, the positioning components 35 include a positioning nut 350 threadedly connected to the outlet end of the channel 302, a positioning pin 351 movably set in the channel 302, and a third spring 352 abutting between the positioning pin 351 and the positioning nut 350, and an annular positioning groove 331 is provided on the outer peripheral edge of the guide rod 33, and the head end of the positioning pin 351 abuts on the annular positioning groove 331. When the knife claw body 31 is forced to open by the knife changing mechanism, the guide rod 33 will move along the sleeve portion 301 and compress the first spring 32, the positioning pin 351 will retreat along the channel 302 and compress the third spring 352, and the positioning pin 351 will disengage from the annular positioning groove 331; after the knife is removed, the knife changing mechanism is separated from the knife claw body 31, and the guide rod 33 will be reset under the elastic force of the first spring 32. When the annular positioning groove 331 is aligned with the head end of the positioning pin 351, the positioning pin 351 will abut against the annular positioning groove 331 under the elastic force of the third spring 352, thereby positioning the guide rod 33, completing the closing of the knife claw 3 and preventing the knife claw 3 from moving.

[0028] Based on the above embodiment, a first annular groove is provided on the inner circumference of the rear end of the sleeve portion 301. A first retaining spring 301b is disposed in the first annular groove, matching the first annular groove. The end cap 301a abuts between one end surface of the first retaining spring 301b and one end of the first spring 32. During assembly, the end cap 301a, first spring 32, and guide rod 33 are sequentially assembled from the front end of the sleeve portion 301. The first retaining spring 301b then engages the first annular groove, securing the end cap 301a and facilitating assembly and disassembly.

[0029] Based on the above embodiment, a first guide sleeve 303 with a clearance fit with the sleeve portion 301 is provided in the sleeve portion 301, the first guide sleeve 303 is matched with the guide rod 33, and the guide rod 33 is movably provided in the first guide sleeve 303, so as to avoid direct contact between the guide rod 33 and the inner wall of the sleeve portion 301, thereby reducing the wear of the sleeve portion 301, and only the first guide sleeve 303 needs to be replaced; a second guide sleeve 304 with a clearance fit with the channel 302 is provided in the channel 302, the second guide sleeve 304 is matched with the positioning pin 351, and the positioning pin 351 is movably provided in the second guide sleeve 304, so as to avoid direct contact between the positioning pin 351 and the inner wall of the channel 302, thereby reducing the wear of the channel 302, and only the second guide sleeve 304 needs to be replaced.

[0030] Based on the above embodiment, a spring accommodating groove 332 is provided at one end of the guide rod 33, and the first spring 32 is arranged in the spring accommodating groove 332 and one end thereof abuts against the inner end surface of the spring accommodating groove 332, which can limit the first spring 32 and improve the activity stability of the guide rod 33.

[0031] Based on the above embodiment, a blade-engaging arm 340 is provided with a blade-engaging head 342 at one end. A limiting portion 342a is provided on one end surface of the blade-engaging head 342. A limiting notch 312c is provided on one end surface of the blade-engaging arm mounting plate 312, which matches the limiting portion 342a. A first pin hole is provided through the blade-engaging arm mounting plate 312, which communicates with the swinging slot 312a. A second pin hole is provided through the blade-engaging arm 340, which corresponds to the first pin hole. A pin 343 is connected between the first and second pin holes. A second annular groove is provided on the outer edge of one end of the pin 343, and a second retaining spring 343a is secured in the second annular groove to facilitate assembly and disassembly of the pin 343. To configure the blade-engaging arm 340 as a force-saving lever, the power arm must be greater than the resistance arm. That is, the linear distance between the blade-engaging pin 341 and the pin 343 is greater than the linear distance between the end of the second spring 313 and the pin 343.

[0032] Based on the above embodiment, a through hole 342b is provided on the knife head 342, and a T-shaped sleeve 344 matching the through hole 342b is provided in the through hole 342b. The inner ring of the T-shaped sleeve 344 is matched with the knife pin 341, and the knife pin 341 is inserted into the T-shaped sleeve 344. A third annular groove is provided on the outer edge of one end of the knife pin 341, and a third retaining spring 345 is clamped on the third annular groove to facilitate the disassembly and replacement of the knife pin 341, avoid direct contact between the knife pin 341 and the through hole 342b, and reduce the wear of the knife arm 340.

[0033] Based on the above embodiment, a first limiting column 340a is provided on the inner side wall of one end of the knife arm 340, and one end of the second spring 313 is sleeved on the first limiting column 340a, which can limit the end of the second spring 313; a second limiting column 351a is provided on the inner side wall of one end of the positioning pin 351, and one end of the third spring 352 is sleeved on the second limiting column 351a, which can limit the end of the third spring 352.

[0034] Based on the above embodiment, one end of the blade arm mounting plate 312 is provided with a U-shaped blade retaining groove 312d, to which a limit plate 312e is screwed. When a tool is engaged with the blade claw 3, the annular retaining groove on the tool engages with the limit plate 312e. The front end of the limit plate 312e abuts against the annular retaining groove on the tool, restraining the tool and preventing it from moving in the tool magazine.

[0035] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A floating drilling and tapping tool magazine, comprising a mounting chassis, a rotary drive device disposed at the top center of the mounting chassis, and tool claws evenly distributed on the mounting chassis, characterized in that: The knife claw comprises a knife claw seat, a knife claw body, a first spring, a guide rod, and two knife arm assemblies. The knife claw seat comprises a seat body portion fixedly connected to the top of the mounting chassis, a sleeve portion connected to one side of the seat body portion, one end of the knife claw body is hinged on the seat body portion, the guide rod is movably arranged in the sleeve portion, the tail end of the sleeve portion is detachably connected to an end cover, the end cover is used to close the tail end of the sleeve portion, the first spring abuts between the end cover and one end of the guide rod, the other end of the guide rod is hinged to a connecting rod, the outer side of the knife claw body is fixedly connected to a knife claw door panel, and the other end of the connecting rod The end is hinged on the outer side wall of the knife claw door panel, and notches are symmetrically provided on both sides of the knife claw door panel, and brush strips are provided on the notches to fill the notches. The knife claw body includes a knife arm mounting plate, and the knife arm assembly includes a knife-catching arm and a knife-catching pin. Both side walls of the knife arm mounting plate are provided with a swinging movable groove, and the knife-catching arm is hinged on the swinging movable groove, and the knife-catching pin is fixedly connected to the inner side wall of the knife-catching arm. One end of the knife-catching pin is provided with a spherical end portion, and a spring accommodating path is provided between the two swinging movable grooves, and a second spring is provided in the spring accommodating path to abut between one ends of the two knife-catching arms.

2. A floating drilling and tapping tool magazine according to claim 1, characterized in that: Both side walls of the seat body are penetrated by channels connected to the inner ring of the sleeve part, and positioning components are provided on both sides of the seat body, and the positioning components include a positioning nut threadedly connected to the outlet end of the channel, a positioning pin movably set in the channel, and a third spring abutting between the positioning pin and the positioning nut. An annular positioning groove is provided on the outer peripheral edge of the guide rod, and the head end of the positioning pin abuts against the annular positioning groove.

3. A floating drilling and tapping tool magazine according to claim 2, characterized in that: A first annular groove is provided on the inner circumference of the rear end of the sleeve portion, a first retaining spring matching the first annular groove is provided on the first annular groove, and the end cover abuts between one end surface of the first retaining spring and one end of the first spring.

4. A floating drilling and tapping tool magazine according to claim 3, characterized in that: The sleeve portion is provided with a first guide sleeve that is loosely matched with the sleeve portion, the first guide sleeve is matched with the guide rod, and the guide rod is movably provided in the first guide sleeve; the channel is provided with a second guide sleeve that is loosely matched with the channel, the second guide sleeve is matched with the positioning pin, and the positioning pin is movably provided in the second guide sleeve.

5. The floating drilling and tapping tool magazine according to claim 4, characterized in that: A spring receiving groove is provided at one end of the guide rod, the first spring is provided in the spring receiving groove and one end of the first spring abuts against the inner end surface of the spring receiving groove.

6. The floating drilling and tapping tool magazine according to claim 5, characterized in that: A knife-locking head is provided at one end of the knife-locking arm, and a limiting portion is provided at one end surface of the knife-locking head. A limiting notch matching the limiting portion is provided at one end surface of the knife arm mounting plate. A first pin hole communicating with the swinging movable groove is provided on the knife arm mounting plate, and a second pin hole corresponding to the first pin hole is provided on the knife-locking arm. A pin is connected between the first pin hole and the second pin hole, and a second annular groove is provided on the outer edge of one end of the pin, and a second retaining spring is clamped on the second annular groove.

7. The floating drilling and tapping tool magazine according to claim 6, characterized in that: A through hole is provided on the head of the buckle knife, and a T-shaped sleeve matching the through hole is provided in the through hole. The inner ring of the T-shaped sleeve is matched with the buckle knife pin, and the buckle knife pin is inserted in the T-shaped sleeve. A third annular groove is provided on the outer edge of one end of the buckle knife pin, and a third retaining spring is clamped on the third annular groove.

8. The floating drilling and tapping tool magazine according to claim 7, characterized in that: A first limiting column is provided on the inner side wall of one end of the knife-clamping arm, and one end of the second spring is sleeved on the first limiting column; a second limiting column is provided on the inner side wall of one end of the positioning pin, and one end of the third spring is sleeved on the second limiting column.

9. The floating drilling and tapping tool magazine according to claim 8, characterized in that: A U-shaped knife clamping groove is provided at one end of the knife arm mounting plate, and a limiting plate is connected to the U-shaped knife clamping groove via screws.

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