Tool changing device of numerical control machining center

Abstract

The utility model provides a numerical control machining center tool changing device which comprises a numerical control machining tool and a bamboo hat type tool magazine body, and a cleaning assembly used for cleaning the connecting face of the numerical control machining tool is arranged in a protective cover. An auxiliary blowing-off assembly used for blowing off chippings or raised dust generated in the cleaning process is arranged beside the cleaning assembly. According to the numerical control machining tool cleaning device, the servo motor drives the tool cleaning brush to rotate together through the transmission shaft to rotationally clean the connecting face, making contact with the tool cleaning brush, of the numerical control machining tool; the transmission shaft can drive the driven belt wheel to rotate together through the driving belt wheel and the transmission belt, the driven belt wheel can drive the air blowing fan blades to rotate synchronously through the driven shaft to blow air downwards, and at the moment, the air guide plate can guide part of air blown out downwards by the air blowing fan blades to the cutter cleaning brush. Therefore, most of chippings and dust adhered to the surface of the cutter cleaning brush and the connecting surface of the cutter cleaning brush are blown off, and the connecting surface of the cutter cleaning brush is effectively cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a tool changing device for a numerical control processing center. Background Art

[0002] CNC machining centers can complete various processing requirements through the control of computer programs, greatly shorten the processing time and reduce production costs. During the processing of CNC machining centers, tools need to be replaced according to different operating requirements. The conical tool magazine does not require the use of a tool changing robot when changing tools. It has the advantages of simple structure, low cost, easy control and convenient maintenance. When changing tools, the spindle moves to the conical tool magazine. When the tool on the spindle enters the slot of the tool magazine, the spindle moves upward to disengage from the tool; then the tool magazine rotates, and when the tool to be replaced is aligned directly below the spindle, the spindle moves down, allowing the tool to enter the spindle taper hole. After clamping the tool, the spindle moves away to continue processing.

[0003] Announcement No. "CN220128242U" provides a tool changing device for a CNC machining center, which drives the cleaning brush to rotate along the surface of the tool through a rotating drive member, thereby achieving complete cleaning of the tool connection surface and improving the cleaning effect; the cleaning brush is driven up and down by a lifting drive member, thereby avoiding the conical tool magazine from abutting against the cleaning brush when rotating, reducing the deformation of the cleaning brush and extending the service life of the cleaning brush.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] Although the tool changing device of the CNC machining center drives the cleaning brush to rotate along the surface of the tool for cleaning through a rotating drive part, some debris will adhere to the inner wall of the cleaning brush during actual use, and the adhered debris will affect the cleaning effect of the cleaning brush. Therefore, relying solely on the rotating cleaning brush cannot effectively clean the debris and dust remaining on the tool connection surface, and its practicality is poor. Utility Model Content

[0006] The purpose of the utility model is to provide a tool changing device for a CNC machining center to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A tool changing device for a CNC machining center comprises a CNC machining tool, a conical tool magazine body and a protective cover, wherein a protective cover is installed on the front side of the upper end face of the conical tool magazine body, a CNC machining tool is placed inside the conical tool magazine body, a cleaning component for cleaning the connecting surface of the CNC machining tool is arranged inside the protective cover, and an auxiliary blowing-off component for blowing off debris or dust generated during the cleaning process is arranged next to the cleaning component, so as to further improve the cleaning effect of the cleaning component.

[0009] Preferably, the cleaning assembly includes a linkage plate, a rectangular through cavity, a servo motor, a transmission shaft and a tool cleaning brush. A linkage plate is installed inside the protective cover, a servo motor is installed on the left side of the lower end face of the linkage plate, a transmission shaft is installed at the lower end of the servo motor, a tool cleaning brush is installed at the lower end of the transmission shaft, and a rectangular through cavity is opened on the front side of the upper end face of the conical tool magazine body.

[0010] Preferably, a servo electric cylinder is installed at the middle position of the upper end surface of the linkage plate, and limit posts are symmetrically arranged on the left and right sides inside the linkage plate.

[0011] Preferably, the auxiliary blowing-off assembly includes a blowing fan blade, a driving pulley, a transmission belt, a driven pulley and a driven shaft, a driving pulley is arranged on the upper side of the annular side surface of the transmission shaft, a driven shaft is installed on the right side of the lower end surface of the linkage plate, a blowing fan blade is installed on the lower end of the driven shaft, a driven pulley is arranged on the lower side of the annular side surface of the driven shaft, and a transmission belt is arranged between the driven pulley and the driving pulley.

[0012] Preferably, a follower seat is provided at the upper end of the driven shaft, and the follower seat is circular, a limit stop ring is installed on the right side of the lower end surface of the linkage plate, and an air guide plate is provided on the right side of the lower end surface of the linkage plate.

[0013] Preferably, the tool cleaning brush matches the connecting surface of the CNC machining tool, and the tool cleaning brush is a separately detachable structure.

[0014] Preferably, the servo motor and the servo electric cylinder are connected to an external intelligent servo driver via wires, and the distance between the linkage plate and the conical tool magazine body is greater than the distance between the tool cleaning brush and the CNC machining tool.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. This utility model is used to clean the debris or dust on the CNC machining tool connection surface inside the conical tool magazine body. The servo electric cylinder is used to make the linkage plate drive the servo motor to move downward together, and the tool cleaning brush is synchronously moved downward and contacts the CNC machining tool connection surface directly below. At this time, the servo motor drives the tool cleaning brush to rotate through the transmission shaft to clean the CNC machining tool connection surface in contact.

[0017] 2. In the present invention, when the servo motor drives the tool cleaning brush to rotate through the transmission shaft, the transmission shaft will drive the driven pulley to rotate together through the active pulley and the transmission belt, and the driven pulley will drive the fan blades to rotate synchronously downward through the driven shaft to blow air. At this time, the air guide plate will guide a part of the wind blown downward by the fan blades to the tool cleaning brush, so as to blow off most of the debris and dust adhered to the surface of the tool cleaning brush and the connecting surface of the tool cleaning brush, thereby effectively cleaning the connecting surface of the tool cleaning brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a structural diagram of the utility model after the protective cover is disassembled;

[0020] Figure 3 It is a partial structural diagram of the cleaning component and the auxiliary blowing component in the utility model;

[0021] Figure 4 It is a front cross-sectional view of the cleaning component and the auxiliary blow-off component in the utility model;

[0022] Figure 5 It is a partial structural diagram of the auxiliary blow-off component in the utility model.

[0023] In the figure: 1. CNC machining tool; 2. Cone-shaped tool magazine body; 3. Protective cover; 4. Cleaning assembly; 41. Servo electric cylinder; 42. Limit column; 43. Linkage plate; 44. Rectangular through cavity; 45. Servo motor; 46. Transmission shaft; 47. Tool cleaning brush; 5. Auxiliary blowing assembly; 51. Blowing fan blades; 52. Wind guide plate; 53. Driving pulley; 54. Transmission belt; 55. Driven pulley; 56. Driven shaft; 57. Follower seat; 58. Limit ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A tool changing device for a CNC machining center includes a CNC machining tool 1, a conical tool magazine body 2 and a protective cover 3. The protective cover 3 is installed on the front side of the upper end of the conical tool magazine body 2. The protective cover 3 is a detachable structure. The detachable protective cover 3 not only protects the cleaning component 4 and the auxiliary blow-off component 5, but also facilitates the subsequent maintenance of the cleaning component 4 and the auxiliary blow-off component 5 respectively. A CNC machining tool 1 is placed inside the conical tool magazine body 2. Since the internal detailed structure and working principle of the conical tool magazine body 2 are relatively mature technologies in the prior art, they will not be described in detail here.

[0028] A cleaning component 4 for cleaning the connecting surface of the CNC machining tool 1 is arranged inside the protective cover 3, and an auxiliary blowing-off component 5 for blowing off debris or dust generated during the cleaning process is arranged next to the cleaning component 4, so as to further improve the cleaning effect of the cleaning component 4.

[0029] The cleaning assembly 4 includes a linkage plate 43, a rectangular through cavity 44, a servo motor 45, a transmission shaft 46 and a tool cleaning brush 47. The linkage plate 43 is installed inside the protective cover 3. The distance between the linkage plate 43 and the conical tool magazine body 2 is greater than the distance between the tool cleaning brush 47 and the CNC machining tool 1. The linkage plate 43 will drive the servo motor 45 and the follower seat 57 to move up and down synchronously. The servo motor 45 is installed on the left side of the lower end surface of the linkage plate 43. The servo motor 45 will drive the transmission shaft 46 to rotate when working. The transmission shaft 46 is installed at the lower end of the servo motor 45. The transmission shaft 46 is connected to the active pulley 53 by welding. The transmission shaft 46 will respectively drive the active pulley 53 and the tool cleaning brush 47 to rotate.

[0030] A tool cleaning brush 47 is installed at the lower end of the transmission shaft 46. The tool cleaning brush 47 matches the connecting surface of the CNC machining tool 1. When the tool cleaning brush 47 rotates, it will clean the debris or dust on the connecting surface of the CNC machining tool 1 that it contacts. The tool cleaning brush 47 is a separately detachable structure. The separately detachable tool cleaning brush 47 is convenient for replacing it separately at a later time. A rectangular through cavity 44 is opened on the front side of the upper end face of the conical tool magazine body 2. The rectangular through cavity 44 facilitates the tool cleaning brush 47, the blowing fan blades 51 and the air guide plate 52 to extend into the interior of the conical tool magazine body 2. A servo electric cylinder 41 is installed in the middle position of the upper end face of the linkage plate 43. The servo electric cylinder 41 will drive the linkage plate 43 to move up and down.

[0031] Limiting posts 42 are symmetrically arranged on the left and right sides of the linkage plate 43. The limiting posts 42 are connected to the bamboo-hat-type tool magazine body 2 by welding. The limiting posts 42 will limit and guide the linkage plate 43 to prevent the linkage plate 43 from offset or shaking during use. The servo motor 45 and the servo electric cylinder 41 are connected to the external intelligent servo driver through wires. The external intelligent servo driver can perform ladder diagram programming, complete PLC logic and data operations, and control the servo motor 45 and the servo electric cylinder 41 to work according to preset programs through unique motion control instructions.

[0032] Embodiment 2:

[0033] On the basis of embodiment one, in this embodiment, while the servo motor 45 drives the tool cleaning brush 47 to rotate through the transmission shaft 46, the transmission shaft 46 will drive the driven pulley 55 to rotate together through the active pulley 53 and the transmission belt 54, and the driven pulley 55 will drive the blowing fan blades 51 to rotate synchronously downward through the driven shaft 56 to blow air. At this time, the air guide plate 52 will guide a part of the wind blown downward by the blowing fan blades 51 to the tool cleaning brush 47, so as to blow off most of the debris and dust adhered to the surface of the tool cleaning brush 47 and the connecting surface of the tool cleaning brush 47, thereby effectively cleaning the connecting surface of the tool cleaning brush 47.

[0034] The auxiliary blowing-off assembly 5 includes a blowing fan blade 51, a driving pulley 53, a transmission belt 54, a driven pulley 55 and a driven shaft 56. A driving pulley 53 is arranged on the upper side of the annular side surface of the transmission shaft 46. The driving pulley 53 will drive the transmission belt 54 to rotate. A driven shaft 56 is installed on the right side of the lower end surface of the linkage plate 43. The driven shaft 56 is connected to the follower seat 57 and the driven pulley 55 by welding. The driven shaft 56 will drive the blowing fan blade 51 to rotate. The blowing fan blade 51 is installed at the lower end of the driven shaft 56. The blowing fan blade 51 will blow air downward when rotating.

[0035] A driven pulley 55 is provided on the lower side of the annular side surface of the driven shaft 56, and the driven pulley 55 will drive the driven shaft 56 to rotate. A transmission belt 54 is provided between the driven pulley 55 and the driving pulley 53, and the transmission belt 54 facilitates the driving pulley 53 to drive the driven pulley 55 to rotate together. A follower seat 57 is provided on the upper end of the driven shaft 56, and the follower seat 57 is circular. A limit stop ring 58 is installed on the right side of the lower end surface of the linkage plate 43. The circular follower seat 57 will limit the driven shaft 56, and the limit stop ring 58 will block and limit the follower seat 57, thereby preventing the driven shaft 56 from shaking or displacement during rotation and use. A wind guide plate 52 is provided on the right side of the lower end surface of the linkage plate 43. The wind guide plate 52 is connected to the linkage plate 43 by welding. The wind guide plate 52 will guide a part of the wind blown downward by the fan blades 51 to the tool cleaning brush 47.

[0036] Working principle: when it is necessary to clean the debris or dust on the connecting surface of the CNC machining tool 1 inside the conical tool magazine body 2, first control the servo electric cylinder 41 to extend through the external intelligent servo driver, so that the linkage plate 43 drives the servo motor 45 to move downward together, and the servo motor 45 will drive the tool cleaning brush 47 to move downward synchronously through the transmission shaft 46, and continue to descend until the tool cleaning brush 47 contacts the connecting surface of the CNC machining tool 1 directly below; then the external intelligent servo driver will control the servo motor 45 to work, so that the servo motor 45 drives the transmission shaft 46 to rotate, and the transmission shaft 46 will drive the tool cleaning brush 47 to rotate together to rotate and clean the connecting surface of the CNC machining tool 1 in contact with it, and at the same time, the transmission shaft 46 will drive the active pulley 53 to rotate together, so that the active pulley 53 passes The transmission belt 54 drives the driven pulley 55 to rotate together, and the driven pulley 55 will drive the blowing fan blades 51 to rotate synchronously through the driven shaft 56. At this time, the rotating blowing fan blades 51 will blow air downward, and the wind guide plate 52 will guide a part of the wind blown downward by the blowing fan blades 51 to the tool cleaning brush 47, so as to blow off most of the debris and dust adhered to the surface of the tool cleaning brush 47 and the connecting surface of the tool cleaning brush 47, thereby effectively cleaning the connecting surface of the tool cleaning brush 47; after cleaning, the external intelligent servo driver will control the servo motor 45 to stop working and control the servo electric cylinder 41 to perform a contraction action, so that the tool cleaning brush 47 moves up to the initial position, so that the bamboo hat type tool magazine body 2 can rotate the next CNC machining tool 1 to the bottom of the tool cleaning brush 47 for the next set of cleaning operations.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool changing device for a CNC machining center, comprising a CNC machining tool (1), a conical tool magazine body (2) and a protective cover (3), characterized in that: A protective cover (3) is installed on the front side of the upper end face of the conical tool magazine body (2); a numerical control machining tool (1) is placed inside the conical tool magazine body (2); a cleaning component (4) for cleaning the connection surface of the numerical control machining tool (1) is arranged inside the protective cover (3); an auxiliary blowing-off component (5) for blowing off debris or dust generated during the cleaning process is arranged next to the cleaning component (4), thereby further improving the cleaning effect of the cleaning component (4).

2. A tool changing device for a CNC machining center according to claim 1, characterized in that: The cleaning assembly (4) comprises a linkage plate (43), a rectangular through cavity (44), a servo motor (45), a transmission shaft (46) and a tool cleaning brush (47); the linkage plate (43) is installed inside the protective cover (3); the servo motor (45) is installed on the left side of the lower end surface of the linkage plate (43); the transmission shaft (46) is installed at the lower end of the servo motor (45); the tool cleaning brush (47) is installed at the lower end of the transmission shaft (46); and the rectangular through cavity (44) is opened on the front side of the upper end surface of the conical tool magazine body (2).

3. A tool changing device for a CNC machining center according to claim 2, characterized in that: A servo electric cylinder (41) is installed at the middle position of the upper end surface of the linkage plate (43), and limit posts (42) are symmetrically arranged on the left and right sides of the linkage plate (43).

4. A tool changing device for a CNC machining center according to claim 2, characterized in that: The auxiliary blow-off assembly (5) comprises a blowing fan blade (51), a driving pulley (53), a transmission belt (54), a driven pulley (55) and a driven shaft (56); the driving pulley (53) is arranged on the upper side of the annular side surface of the transmission shaft (46); the driven shaft (56) is installed on the right side of the lower end surface of the linkage plate (43); the blowing fan blade (51) is installed at the lower end of the driven shaft (56); the driven pulley (55) is arranged on the lower side of the annular side surface of the driven shaft (56); and a transmission belt (54) is arranged between the driven pulley (55) and the driving pulley (53).

5. A tool changing device for a CNC machining center according to claim 4, characterized in that: A follower seat (57) is arranged at the upper end of the driven shaft (56), and the follower seat (57) is circular. A limit stop ring (58) is installed on the right side of the lower end surface of the linkage plate (43), and an air guide plate (52) is arranged on the right side of the lower end surface of the linkage plate (43).

6. The tool changing device for a CNC machining center according to claim 2, characterized in that: The tool cleaning brush (47) matches the connection surface of the numerical control machining tool (1), and the tool cleaning brush (47) is a structure that can be independently disassembled.

7. The tool changing device for a CNC machining center according to claim 3, characterized in that: The servo motor (45) and the servo electric cylinder (41) are both connected to an external intelligent servo driver via wires, and the distance between the linkage plate (43) and the conical tool magazine body (2) is greater than the distance between the tool cleaning brush (47) and the CNC machining tool (1).

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