Totally-closed high-precision servo overturning type tool magazine

Abstract

The invention relates to a totally-closed high-precision servo turnover type tool magazine, which belongs to the technical field of numerical control machine tool tool magazines, and comprises a tool magazine frame body, a turnover tool magazine assembly is mounted on the tool magazine frame body, and the turnover tool magazine assembly is rotationally connected with the tool magazine frame body; one end of the turnover tool magazine assembly is connected with a servo motor; the turnover tool magazine assembly comprises a turnover frame, and a tool claw assembly is installed on the turnover frame. A tool magazine sealing plate is further fixed to the overturning frame. The cutter claw assembly comprises a mounting bottom plate, a supporting block, a cutter clamp elastic piece, a cutter handle supporting plate and a rotating block. The cutter holder elastic sheet is located below the cutter handle supporting plate, and openings are formed in the front ends of the cutter holder elastic sheet and the cutter handle supporting plate; the supporting block is hinged to the rotating block, the upper portion of the rotating block is connected with the tool holder elastic piece, the spring is installed on the rotating block, and the pressing column is installed on the tool holder elastic piece. The tool changing efficiency and the operation precision are improved, the structure is simple, stability is higher, the fault rate is lower, pollution is avoided, the influence of temperature difference is avoided, the service life is longer, the tool is not prone to falling off, and the manufacturing cost and the follow-up maintenance cost are lower.

Description

Technical Field

[0001] The invention relates to a fully enclosed high-precision servo flip-type tool magazine, belonging to the technical field of tool magazines for numerical control machine tools. Background Art

[0002] The tool magazine is one of the most important components in the tool changing system of CNC machine tools, which is used to store processing tools and auxiliary tools. At present, the CNC machine tool tool magazine used by most domestic users is a three-phase asynchronous motor + hydraulic manipulator + chain structure. When changing tools, the tool magazine of this structure drives the chain through the three-phase asynchronous motor to move the tool to be replaced to the vicinity of the tool changing mechanism, and the tool is removed by the tool changing mechanism, and then moved to the vicinity of the machine tool spindle, the tool on the spindle is removed, and then a new tool is installed; the tool magazine of this structure has a complex structure, a high failure rate, low precision, and cumbersome tool changing action, low tool changing efficiency, and is greatly affected by temperature. Summary of the invention

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to provide a fully enclosed high-precision servo flip tool magazine, which adopts a servo motor to drive the tool magazine to flip, and relies on the motion accuracy of the spindle itself to cooperate with the mechanical structure to complete the tool change, with a simple structure, low failure rate, high tool changing efficiency and operation accuracy, and good stability.

[0004] The fully enclosed high-precision servo flip tool magazine of the present invention comprises a tool magazine frame, on which a flip tool magazine assembly is mounted, and the flip tool magazine assembly is rotatably connected to the tool magazine frame via a bearing; one end of the flip tool magazine assembly is connected to a servo motor, and is driven by the servo motor to flip;

[0005] The flip tool magazine assembly comprises a flip frame, on which are mounted a plurality of knife claw assemblies, which are arranged in two rows on the flip frame and are used to clamp the tool; a tool magazine sealing plate is also fixed on the flip frame, and after the flip tool magazine assembly is flipped, the tool magazine sealing plate seals the entire tool magazine to prevent iron chips or cutting fluid from splashing onto the tool during processing;

[0006] The knife claw assembly comprises a mounting base, a support block, a knife clamp spring piece, a knife handle support plate, and a rotating block; the mounting base, the support block, and the knife handle support plate are connected in sequence from bottom to top, the knife clamp spring piece is located below the knife handle support plate, and the front ends of the knife clamp spring piece and the knife handle support plate are both provided with openings; the knife clamp spring piece is used to limit the movement of the knife handle in the horizontal direction, and the knife handle support plate is used to limit the movement of the knife handle in the vertical direction; the support block is hinged to the rotating block through a pin shaft, the knife clamp spring piece is connected above the rotating block, a spring is installed on the rotating block, the spring passes through the knife clamp spring piece, and under the action of the spring, the knife clamp spring piece is tightly attached to the knife handle support plate; a pressure column is installed on the knife clamp spring piece;

[0007] When changing the tool, the spindle drives the tool handle to move horizontally to align with the opening of the tool clamp spring piece. The edge of the tool handle contacts the tool clamp spring piece. As the tool handle moves, the tool clamp spring piece is continuously pressed down until the tool handle fits with the tool handle support plate, and the tool handle support plate limits the vertical direction of the tool handle. At this time, the spindle moves up and separates from the tool handle. At the same time, the tool clamp spring piece is lifted up to limit the horizontal direction of the tool handle, and the tool is locked on the claw assembly; then the spindle moves to above the claw assembly of the tool to be replaced and moves down, pressing the pressure column downward, and the rotating block drives the tool clamp spring piece to separate from the tool handle support plate, so that the tool handle is unlocked in the horizontal direction. At this time, the spindle retreats along the opening direction of the tool handle support plate to remove the tool.

[0008] Preferably, a positioning block is installed below the tool handle support plate to locate the direction of the tool handle and prevent the tool from shifting.

[0009] Furthermore, a switch mounting plate is installed on the upper rear side of the tool handle support plate, and a detection switch is installed on the switch mounting plate. The detection switch is used to detect whether the tool clamp spring piece has moved into place.

[0010] Furthermore, a boss is provided on the end of the tool handle supporting plate that contacts the tool handle, and the boss is matched with a groove on the tool handle; a pressure column avoidance hole is also provided on the tool handle supporting plate.

[0011] Preferably, downwardly inclined claws are provided on both sides of the front end of the tool clamp spring piece, and inclined surfaces are provided on the opposite sides of the two claws to facilitate smooth contact between the edge of the tool handle and the tool clamp spring piece when changing the tool to avoid movement jamming; a raised clamping platform is provided on the rear side of the claw to clamp the tool handle; a spring avoidance hole is also provided on the rear side of the tool clamp spring piece.

[0012] Preferably, a spring mounting hole is provided on the rear side of the rotating block, the spring is located in the spring mounting hole, and a pin mounting hole is provided through the side of the rotating block.

[0013] Preferably, support plates are installed on both sides of the tool magazine frame, a motor mounting seat is installed on the support plate on one side, and the servo motor is fixed on the motor mounting seat; the turning frame includes end plates and connecting beams, the end plates are located on both sides of the connecting beam, and the output shaft of the servo motor is transmission-connected to the end plates; the servo motor can drive the turning frame to rotate forward or reverse, so as to facilitate the spindle to replace tools in different positions, reduce the servo motor stroke and the movement amplitude of the turning frame, thereby improving the tool changing efficiency.

[0014] Preferably, the tool magazine frame is provided with a top guard plate, side guard plates and a base, and the base is provided with a forklift loading and unloading port for easy movement.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention adopts a servo motor to drive the flip tool magazine assembly to rotate forward or reverse, so that the tool to be replaced can be quickly presented nearby, thereby improving the tool changing efficiency and operation accuracy;

[0017] 2. The present invention changes the traditional hydraulic structure into a servo motor structure, which has a simple structure, stronger stability, lower failure rate, no pollution, is not affected by temperature difference, and has a longer service life;

[0018] 3. The present invention relies on the movement accuracy of the spindle itself in conjunction with the knife claw assembly to complete the tool change. The locking and unlocking of the tool is achieved through a purely mechanical structure without any electric or pneumatic components. The tool is not easy to fall off, has higher stability, and has lower manufacturing costs and subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention when it is in a closed state;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention when it is in an open state;

[0021] Figure 3 It is a structural schematic diagram of the tool magazine frame;

[0022] Figure 4 It is a schematic diagram of the structure of the turning frame and the servo motor;

[0023] Figure 5 It is a structural schematic diagram of the knife claw assembly;

[0024] Figure 6 is a cross-sectional view of the knife claw assembly;

[0025] Figure 7 It is a schematic diagram of the working state of the knife claw assembly;

[0026] Figure 8 It is a three-dimensional picture of the tool handle support plate;

[0027] Fig. 9 It is a three-dimensional picture of the knife clip shrapnel;

[0028] Fig.10 is a stereogram of the rotating block.

[0029] In the figure: 1, tool magazine frame; 11, top guard plate; 12, side guard plate; 13, base; 14, support plate; 2, flip tool magazine assembly; 21, flip frame; 211, tool magazine cover plate; 212, connecting beam; 213, end plate; 214, motor mounting seat; 22, knife claw assembly; 221, tool handle support plate; 221a, boss; 221b, pressure column avoidance hole; 222, pressure column; 223, switch installation Plate; 224, detection switch; 225, support block; 226, mounting base; 227, tool holder spring; 227a, spring avoidance hole; 227b, card table; 227c, inclined surface; 228, positioning block; 229, pin shaft; 2210, rotating block; 2210a, spring mounting hole; 2210b, pin shaft mounting hole; 2211, spring; 3, servo motor; 4, tool handle; 41, groove. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with specific embodiments.

[0031] like Figures 1 to 10 As shown, this embodiment is realized by the following technical scheme: it includes a tool magazine frame 1, on which a flip tool magazine assembly 2 is installed, and the flip tool magazine assembly 2 is rotatably connected to the tool magazine frame 1 through a bearing; one end of the flip tool magazine assembly 2 is connected to a servo motor 3, and is driven by the servo motor 3 to flip; the flip tool magazine assembly 2 includes a flip frame 21, on which a plurality of sets of knife claw assemblies 22 are installed, and the knife claw assemblies 22 are arranged in two rows on the flip frame 21, and the knife claw assemblies 22 are used to clamp the tool; a tool magazine sealing plate 211 is also fixed on the flip frame 21, and after the flip tool magazine assembly 2 is flipped, the tool magazine sealing plate 211 seals the entire tool magazine to prevent iron filings or cutting fluid from splashing onto the tool during processing;

[0032] The knife claw assembly 22 includes a mounting base plate 226, a support block 225, a knife clamp spring piece 227, a knife handle support plate 221, and a rotating block 2210; the mounting base plate 226, the support block 225, and the knife handle support plate 221 are sequentially connected from bottom to top, the knife clamp spring piece 227 is located below the knife handle support plate 221, and the front ends of the knife clamp spring piece 227 and the knife handle support plate 221 are both provided with openings; the knife clamp spring piece 227 is used to limit the movement of the knife handle in the horizontal direction, The tool handle support plate 221 is used to limit the movement of the tool handle in the vertical direction; the support block 225 is hinged to the rotating block 2210 through the pin 229, and the tool clamp spring piece 227 is connected to the top of the rotating block 2210. A spring 2211 is installed on the rotating block 2210, and the spring 2211 penetrates the tool clamp spring piece 227. Under the action of the spring 2211, the tool clamp spring piece 227 is tightly attached to the tool handle support plate 221; a pressure column 222 is installed on the tool clamp spring piece 227.

[0033] A positioning block 228 is installed below the handle support plate 221 to locate the direction of the handle and prevent the tool from shifting. A switch mounting plate 223 is installed above the rear side of the handle support plate 221, and a detection switch 224 is installed on the switch mounting plate 223. The detection switch 224 is used to detect whether the knife clamp spring piece 227 moves into place. A boss 221a is provided at one end of the handle support plate 221 that contacts the handle 4, and the boss 221a is adapted to the groove 41 on the handle 4; a pressure column avoidance hole 221b is also provided on the handle support plate 221.

[0034] The front end of the knife clamp spring piece 227 is provided with downwardly inclined claws on both sides, and the opposite sides of the two claws are provided with inclined surfaces 227c, so that the edge of the tool handle can smoothly contact with the knife clamp spring piece 227 when changing the tool to avoid movement jamming; a raised clamping platform 227b is provided on the rear side of the claw to clamp the tool handle; a spring avoidance hole 227a is also provided on the rear side of the knife clamp spring piece 227. A spring mounting hole 2210a is provided on the rear side of the rotating block 2210, and a spring 2211 is located in the spring mounting hole 2210a. A pin mounting hole 2210b is provided through the side of the rotating block 2210.

[0035] The tool magazine frame 1 is provided with support plates 14 on both sides, and a motor mounting seat 214 is installed on one support plate, and the servo motor 3 is fixed on the motor mounting seat 214; the flip frame 21 includes an end plate 213 and a connecting beam 212, and the end plates 213 are located on both sides of the connecting beam 212, and the output shaft of the servo motor 3 is connected to the end plate 213 by transmission; the servo motor 3 can drive the flip frame 21 to rotate forward or reverse, so as to facilitate the spindle to replace tools at different positions, reduce the stroke of the servo motor 3 and the movement amplitude of the flip frame 21, thereby improving the tool changing efficiency. The tool magazine frame 1 is provided with a top guard plate 11, a side guard plate 12 and a base 13, and the base 13 is provided with a forklift loading and unloading port that is easy to move.

[0036] The working process of the present invention is:

[0037] When changing the tool, the spindle drives the tool handle 4 to move to the front of the knife claw assembly without a knife, aligns with the opening of the tool clamp spring piece 227 and moves in the horizontal direction. The edge of the tool handle 4 contacts the inclined surface 227c of the tool clamp spring piece. As the tool handle 4 moves, the tool clamp spring piece 227 is continuously pressed down until the groove 41 of the tool handle fits with the boss 221a of the tool handle support plate 221. The tool handle support plate 221 limits the vertical position of the tool handle 4. At this time, the spindle releases the tool handle and moves up, separates from the tool handle, and the spindle moves up. At the same time, the tool clamp spring piece 227 is lifted up by the action of the spring 2211, limiting the horizontal direction of the tool handle 4, and the tool is locked on the claw assembly 22; then the spindle moves to above the claw assembly of the tool to be replaced and moves downward, pressing the pressure column 222 downward, and the rotating block 2210 drives the tool clamp spring piece 227 to separate from the tool handle support plate 221, so that the tool handle 4 is unlocked in the horizontal direction. At this time, the spindle locks the tool handle and retreats along the opening direction of the tool handle support plate 221 to remove the tool.

Claims

1. A fully enclosed high-precision servo flip tool magazine, characterized in that: The tool magazine frame (1) comprises a tool magazine frame (1), a flip tool magazine assembly (2) is mounted on the tool magazine frame (1), and the flip tool magazine assembly (2) is rotatably connected to the tool magazine frame (1) via a bearing; one end of the flip tool magazine assembly (2) is connected to a servo motor (3); The flip tool magazine assembly (2) comprises a flip frame (21), on which a plurality of knife claw assemblies (22) are mounted, and the knife claw assemblies (22) are arranged in two rows on the flip frame (21); a tool magazine sealing plate (211) for sealing the tool magazine is also fixed on the flip frame (21); The knife claw assembly (22) comprises a mounting base plate (226), a support block (225), a knife clamp spring piece (227), a knife handle supporting plate (221), and a rotating block (2210); the mounting base plate (226), the support block (225), and the knife handle supporting plate (221) are sequentially connected from bottom to top, the knife clamp spring piece (227) is located below the knife handle supporting plate (221), and the front ends of the knife clamp spring piece (227) and the knife handle supporting plate (221) are both provided with openings; the support block (225) is hinged to the rotating block (2210) through a pin shaft (229), the knife clamp spring piece (227) is connected to the top of the rotating block (2210), a spring (2211) is installed on the rotating block (2210), the spring (2211) passes through the knife clamp spring piece (227), and a pressure column (222) is installed on the knife clamp spring piece (227).

2. The fully enclosed high-precision servo flip tool magazine according to claim 1 is characterized in that: A positioning block (228) for positioning the direction of the knife handle is installed below the knife handle supporting plate (221).

3. The fully enclosed high-precision servo flip tool magazine according to claim 2 is characterized in that: A switch mounting plate (223) is installed on the upper rear side of the handle support plate (221), and a detection switch (224) is installed on the switch mounting plate (223).

4. The fully enclosed high-precision servo flip tool magazine according to claim 3 is characterized in that: The end of the handle support plate (221) in contact with the handle (4) is provided with a boss (221a), and the boss (221a) is matched with the groove (41) on the handle; the handle support plate (221) is also provided with a pressure column avoidance hole (221b).

5. The fully enclosed high-precision servo flip tool magazine according to claim 1 is characterized in that: The front ends of the knife clamp spring piece (227) are provided with downwardly inclined clamping claws on both sides, and the opposite sides of the two clamping claws are provided with inclined surfaces (227c); the rear sides of the clamping claws are provided with a raised clamping platform (227b); and the rear side of the knife clamp spring piece (227) is also provided with a spring avoidance hole (227a).

6. The fully enclosed high-precision servo flip tool magazine according to claim 1 is characterized in that: A spring mounting hole (2210a) is provided at the rear side of the rotating block (2210), the spring (2211) is located in the spring mounting hole (2210a), and a pin shaft mounting hole (2210b) is provided through the side of the rotating block (2210).

7. The fully enclosed high-precision servo flip tool magazine according to claim 1 is characterized in that: Support plates (14) are installed on both sides of the tool magazine frame (1), a motor mounting seat (214) is installed on the support plate on one side, and the servo motor (3) is fixed on the motor mounting seat (214); the turning frame (21) includes an end plate (213) and a connecting beam (212), the end plate (213) is located on both sides of the connecting beam (212), and the output shaft of the servo motor (3) is drivingly connected to the end plate (213).

8. The fully enclosed high-precision servo flip tool magazine according to claim 1 is characterized in that: The tool magazine frame (1) is provided with a top guard plate (11), a side guard plate (12) and a base (13); the base (13) is provided with a forklift loading and unloading port which is convenient for movement.

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