Tool magazine of numerical control machine tool

Abstract

The utility model discloses a tool magazine of a numerical control machine tool. The tool magazine comprises a mounting frame, a protective cover, a motor, a cutter head, a cutter groove and a clamping structure. Through the arrangement of the clamping structure, when the push rod is pressed on the surface of the fixing plate, the push rod can drive the rack to enable the connecting teeth to rotate, when the connecting teeth rotate, the rotating clamping arm can be driven to rotate, and at the moment, the rotating clamping arm can be unfolded in a rotating mode; and at the moment, the push rod can slide along the surface of the fixing plate under the action of the torsional spring, and then the rotary clamping arm clamps and fixes the cutter in the cutter groove, so that after the cutter is placed in the cutter groove, the phenomenon that the cutter falls off is avoided, and the situation that the cutter is unstable in the cutter groove due to loss after being used for a long time is avoided.

Description

Technical Field

[0001] The utility model relates to the relevant field of numerical control machine tools, in particular to a tool magazine for numerical control machine tools. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the CNC device through information carriers. The tool magazine of CNC machine tools is a device that provides tool storage and tool change needs in the automated processing process. Its automatic tool change mechanism and tool magazine that can store multiple tools have changed the traditional human-dominated production method.

[0003] Existing patent: CN216503697U, discloses a CNC machine tool disc tool magazine, including: an annular guide rail, including an arc segment and a straight segment; a central spindle, the central spindle is arranged at the center of the annular guide rail; a plurality of connecting rod assemblies, the connecting rod assembly includes a first rod and a support assembly, one end of the first rod is hinged to the central spindle, the other end of the first rod opposite to the first rod is provided with a tool assembly, the first rod also includes a support position between the two ends, the support assembly is hinged to the support position, and the end of the support assembly away from the support position is slidably connected to the annular guide rail; wherein, when the support assembly slides from the arc segment to the straight segment, the distance from the support assembly to the central spindle is reduced, and the end of the first rod away from the central spindle and the tool assembly are lifted. The utility model effectively solves the problem that the tool changing mechanism of the existing tool magazine occupies a large space and cannot be applied to small-sized CNC machine tools without sacrificing the function and capacity of the tool magazine.

[0004] The above patents or existing CNC machine tool tool stocks have the following problems:

[0005] During the long-term use of the existing CNC machine tool tool magazine, the tool groove in the tool disc has undergone irreversible wear and tear after countless tool changes and returns. The tool is not firmly stuck in the tool groove of the tool disc. Therefore, when the motor drives the tool disc to rotate and cut, the tool may fall off directly due to the rotation. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a tool magazine for a CNC machine tool.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a CNC machine tool tool magazine, including a mounting frame, a protective cover is arranged at the bottom of the mounting frame, a motor is arranged on the top of the mounting frame, a tool disc is arranged on the motor output shaft, a tool groove is opened on the tool disc, a clamping structure is arranged on the tool disc, and the clamping structure includes a fixed seat, the fixed seat is arranged on the tool disc, a rotating clamping arm is arranged in the fixed seat, connecting teeth are arranged in the rotating clamping arm, a rack connected to the connecting teeth, the rack is provided with a push rod edge, the push rod is arranged in the middle of the fixed seat, a push block is arranged on the surface of the push rod, a torsion spring is assembled inside the fixed seat, one end of the torsion spring is connected to the push block, and a fixing plate is arranged at the bottom of the mounting frame.

[0008] Preferably, the connecting tooth is inserted into the rotating clamp arm, and a tooth opening is provided at the connection between the rotating clamp arm and the connecting tooth, and the connecting tooth is inserted into the tooth opening.

[0009] Preferably, a slide groove is provided in the middle of the lower end of the push rod, and the slide groove can slide along the surface of the positioning block arranged in the fixing seat through the push rod.

[0010] Preferably, when the rotating clamping arm is in the clamping state, the positioning block is located at the end of one end of the sliding groove.

[0011] Preferably, two torsion springs are provided, and one end of the two torsion springs is connected to the push block.

[0012] Preferably, the left and right side surfaces of the push block are in contact with the inner surface of the fixing seat, a bayonet is provided on the end surface where the push block is connected to the torsion spring, and the end where the torsion spring is connected to the push block is located in the bayonet.

[0013] Preferably, a reinforcement plate is provided inside the fixing plate, and the reinforcement plate reinforces the middle part of the fixing plate.

[0014] Beneficial effects of the utility model:

[0015] The utility model is provided with a clamping structure. When the push rod is pressed on the surface of the fixed plate, the push rod will drive the rack to rotate the connecting tooth. When the connecting tooth rotates, it will drive the rotating clamp arm to rotate. At this time, the rotating clamp arm will rotate and unfold. When the cutter disc rotates and drives the cutter groove to rotate out of the cutter changing position, the push rod will slide along the surface of the fixed plate under the action of the torsion spring, and then the rotating clamp arm will clamp and fix the cutter in the cutter groove, so that after the cutter is placed in the cutter groove, the cutter will not fall off, and the cutter will not be unstable in the cutter groove due to wear and tear after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a front view structural diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixing seat of the utility model from top view;

[0019] Figure 4 It is a schematic diagram of the top view cross-sectional structure of the push block of the utility model;

[0020] Figure 5 It is a schematic diagram of the top view structure of the fixing plate of the utility model.

[0021] Among them: mounting frame-1, guard cover-2, motor-3, cutter disc-4, cutter groove-5, clamping structure-6, fixed seat-61, rotating clamping arm-62, connecting teeth-63, rack-64, push rod-65, push block-66, torsion spring-67, fixed plate-68, tooth mouth-621, slide groove-651, positioning block-652, bayonet-661, reinforcement plate-681. DETAILED DESCRIPTION

[0022] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0023] See also Figure 1 and Figure 2 The utility model provides a tool magazine for a numerically controlled machine tool, comprising a mounting frame 1, a guard 2 is installed at the bottom of the mounting frame 1 by bolts, a motor 3 is fixed at the top of the mounting frame 1 by bolts, the output shaft of the motor 3 runs through the middle of the mounting frame 1, and is rotatably connected with the mounting frame 1, the output shaft of the motor 3 extends into the guard 2, and a cutter disc 4 is installed at the end of the output shaft by bolts, a cutter groove 5 is opened on the cutter disc 4, and a clamping structure 6 is provided on the cutter disc 4;

[0024] The mounting frame 1 is fixed on the CNC machine tool, and then the motor 3 is powered on and connected to the CNC machine tool. Then different CNC machine tool tools are placed in each tool groove 5. The motor 3 is controlled by the CNC machine tool. When the tool needs to be changed, the motor 3 will be driven to rotate the tool disc 4, and the tool placed in the tool groove 5 will rotate accordingly.

[0025] See also Figure 2 , Figure 3 , Figure 4 and Figure 5The utility model provides a tool magazine for a CNC machine tool, wherein the clamping structure 6 includes a fixed seat 61, the fixed seat 61 is fixed to the top surface of the tool disc 4 by bolts, and the lower end of the fixed seat 61 is equipped with a rotating clamping arm 62 that is rotatably connected, and one end of the rotating clamping arm 62 extends out of the fixed seat 61, and a tooth opening 621 is opened in the rotating clamping arm 62, and the connecting tooth 63 is stuck in the tooth opening 621, so that the connecting tooth 63 will not rotate in the rotating clamping arm 62, and the rack 64 engaged with the connecting tooth 63 is integrally formed on the side of the push rod 65, and the push rod 65 is arranged in the middle of the fixed seat 61, and the push rod 65 is connected to the fixed seat 61 in a horizontal forward and backward sliding manner. The lower end of the push rod 65 is provided with a sliding groove 651, and the sliding groove 651 slides along the surface of the positioning block 652 arranged on the inner wall of the bottom end of the fixed seat 61 through the sliding of the push rod 65. When the rotating clamping arm 62 is in the clamping state, the positioning block 652 is located in the sliding groove 651. The end of the end can prevent the rack 64 from separating from the connecting tooth 63, and the positioning block 652 can maintain the sliding stability of the push rod 65. A push block 66 that fits the inner walls of the two sides of the fixed seat 61 is integrally formed on the top surface of the push rod 65. The push block 66 will slide along the inner wall of the fixed seat 61 through the sliding of the push rod 65. Two torsion springs 67 are installed at the upper end of the fixed seat 61. One end of the two torsion springs 67 is connected to the front end surface of the push block 66. The end of the torsion spring 67 connected to the push block 66 will be stuck in the bayonet 661 set on the front end surface of the push block 66, so that when the push block 66 slides, the end of the torsion spring 67 will not move up and down. A fixing plate 68 is fixed to the bottom of the mounting frame 1 by bolts. The fixing plate 68 corresponds to the tool changing position of the cutter disc 4, and a reinforcing plate 681 is integrally formed inside the fixing plate 68. The reinforcing plate 681 reinforces the middle part of the fixing plate 68, effectively preventing the middle part of the fixing plate 68 from being concave.

[0026] When one of the knife grooves 5 rotates to the tool changing position, the fixed seat 61 on the knife groove 5 will rotate with the rotation of the knife disc 4, and then move along the surface of the fixed plate 68. At this time, the push rod 65 is forced to be pressed into the inside of the fixed seat 61, and slides along the inner wall of the fixed seat 61, and at the same time drives the rack 64 to move. Since the rack 64 is meshed with the connecting tooth 63, the push rod 65 will push the rack 64 when it moves to rotate the connecting tooth 63, and drive the rotating clamp arm 62 to rotate and expand. When the push rod 65 slides, it will also drive the push block 66 to push the torsion spring 67. The torsion spring 67 is deformed under force to generate elastic force. When the tool is placed in the tool slot 5, the motor 3 will drive the tool disc 4 to rotate. The rotation of the tool disc 4 will drive the tool slot 5 at the tool changing position to rotate out of the tool changing position. At this time, the push rod 65 will slide along the surface of the fixed plate 68. When the push rod 65 slides out of the fixed plate 68, the torsion spring 67 loses its force and pushes the push block 66 to slide, causing the push rod 65 to slide to the outside of the fixed seat 61. At this time, the rack 64 will drive the connecting tooth 63 to rotate, and the rotating clamp arm 62 will clamp and fix the tool in the tool slot 5, so that after the tool is placed in the tool slot 5, the tool will not fall off, and the tool will not be unstable in the tool slot 5 due to wear and tear after long-term use.

[0027] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tool magazine for a numerically controlled machine tool, comprising a mounting frame (1), a protective cover (2) being arranged at the bottom of the mounting frame (1), a motor (3) being arranged at the top of the mounting frame (1), a tool disc (4) being arranged on the output shaft of the motor (3), and a tool groove (5) being provided on the tool disc (4); Features: The invention also comprises a clamping structure (6), wherein the knife disc (4) is provided with the clamping structure (6), wherein the clamping structure (6) comprises a fixed seat (61), wherein the fixed seat (61) is provided on the knife disc (4), wherein a rotating clamping arm (62) is provided in the fixed seat (61), wherein a connecting tooth (63) is provided in the rotating clamping arm (62), and a rack (64) connected to the connecting tooth (63), wherein the rack (64) is provided with a push rod (65) edge, wherein the push rod (65) is provided in the middle of the fixed seat (61), and a push block (66) is provided on the surface of the push rod (65), wherein a torsion spring (67) is installed inside the fixed seat (61), and one end of the torsion spring (67) is connected to the push block (66), and a fixing plate (68) is provided at the bottom of the mounting frame (1).

2. A tool magazine for a CNC machine tool according to claim 1, characterized in that: The connecting tooth (63) is inserted into the rotating clamp arm (62), and a tooth opening (621) is provided at the connection between the rotating clamp arm (62) and the connecting tooth (63), and the connecting tooth (63) is inserted into the tooth opening (621).

3. A tool magazine for a CNC machine tool according to claim 1, characterized in that: A slide groove (651) is provided in the middle of the lower end of the push rod (65), and the slide groove (651) can slide along the surface of a positioning block (652) arranged in the fixing seat (61) through the push rod (65).

4. A tool magazine for a CNC machine tool according to claim 3, characterized in that: When the rotating clamping arm (62) is in a clamping state, the positioning block (652) is located at the end of one end of the sliding groove (651).

5. The tool magazine for a CNC machine tool according to claim 1, characterized in that: Two torsion springs (67) are provided, and one end of the two torsion springs (67) is connected to the push block (66).

6. A tool magazine for a CNC machine tool according to claim 5, characterized in that: The left and right side surfaces of the push block (66) are in contact with the inner surface of the fixing seat (61); a bayonet (661) is provided on the end surface where the push block (66) is connected to the torsion spring (67); and the end where the torsion spring (67) is connected to the push block (66) is located in the bayonet (661).

7. The tool magazine for a CNC machine tool according to claim 1, characterized in that: A reinforcing plate (681) is arranged inside the fixing plate (68), and the reinforcing plate (681) reinforces the middle part of the fixing plate (68).

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