A flipping device for a tool magazine tool holder

Abstract

The present invention relates to a flipping device for a tool magazine tool sleeve, aiming to solve the problems of large vibration and unstable movement when a vertical chain-type tool magazine uses a flipping tool sleeve. It includes a fixed mounting seat, a swing shaft, a cylinder, a parallelogram link mechanism, and a tool sleeve. The swing shaft is arranged on the fixed mounting seat, and the cylinder is connected to the swing shaft through a cylinder seat and can reciprocally swing around the axis of the swing shaft. A connecting block is fixed at the end of the piston rod of the cylinder; the parallelogram link mechanism is installed on the fixed mounting seat, and a connecting block rotating shaft is arranged on the parallelogram link mechanism. The connecting block is connected to the connecting block rotating shaft and can rotate around the axis of the connecting block rotating shaft under the action of the cylinder and drive the parallelogram link mechanism to move; a push-pull shaft and a push-pull shaft sleeve that can rotate around the push-pull shaft are arranged on the parallelogram link mechanism, and a push-pull card seat is arranged on the tool sleeve. The push-pull card seat can clamp the push-pull shaft sleeve, and the tool sleeve is driven to flip along with the movement of the parallelogram link mechanism.

Description

Technical Field

[0001] The present invention belongs to the field of numerical control machine tools, and particularly relates to a turnover device for a tool magazine tool sleeve. Background Art

[0002] With the development of numerical control machining technology and the improvement of market machining requirements, chain-type tool magazines are more and more applied to the structure of numerical control machine tools due to their large capacity advantages. At present, in order to facilitate tool picking and feeding, most of these tool magazines adopt an automatically rotatable tool sleeve structure. The turnover movement of the tool sleeve is usually realized by a cylinder cooperating with a push-pull device, and the reliability of its movement directly affects the service life of the entire tool magazine. However, limited by the existing push-pull device and tool sleeve structure, problems such as large vibration, unstable movement, and high noise are likely to occur when the tool sleeve is turned over. Especially when carrying a heavy tool holder, the entire movement will vibrate, seriously affecting the overall performance of the tool magazine. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a turnover device for a tool sleeve applied to a chain-type tool magazine, which has a stable structure, smooth and stable movement, low noise, and uniform force on the tool holder.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions: A turnover device for a tool magazine tool sleeve includes a fixed mounting seat, a swing shaft, a cylinder, a parallelogram link mechanism, and a tool sleeve. The swing shaft is arranged on the fixed mounting seat. The cylinder is connected to the swing shaft through a cylinder seat and can reciprocally swing around the axis of the swing shaft. A connecting block is fixed at the end of the cylinder piston rod. The parallelogram link mechanism is installed on the fixed mounting seat. A connecting block rotating shaft is arranged on the parallelogram link mechanism. The connecting block is connected to the connecting block rotating shaft and can rotate around the axis of the connecting block rotating shaft under the action of the cylinder and drive the parallelogram link mechanism to move. A push-pull shaft and a push-pull shaft sleeve that can rotate around the push-pull shaft are arranged on the parallelogram link mechanism. A push-pull card seat is arranged on the tool sleeve, and the push-pull card seat can clamp the push-pull shaft sleeve. With the movement of the parallelogram link mechanism, the tool sleeve is driven to turn over.

[0005] In the above-mentioned turnover device for a tool magazine tool sleeve, the parallelogram link mechanism includes a driving link frame and a driven link group. The two groups of driven link groups are arranged in parallel and are respectively hinged between the driving link frame and the fixed mounting seat, that is, one end of the driven link group is hinged to the driving link frame, and the other end is hinged to the fixed mounting seat. The connecting block rotating shaft and the push-pull shaft are respectively installed on the driving link frame.

[0006] The above-mentioned flipping device for the tool sleeve of the tool magazine, wherein the driven link group is a symmetric double-link structure, that is, each group of driven link groups includes two driven rods, and the two driven rods are symmetrically distributed on both sides of the active link frame and are hinged to the active link frame through the first rotating shaft. The first rotating shaft is located at one end of the driven rod, and the other ends of the driven rods are respectively hinged to the fixed mounting seat through two coaxial second rotating shafts.

[0007] The above-mentioned flipping device for the tool sleeve of the tool magazine, wherein the tool sleeve is hinged to the tool magazine through the tool sleeve rotating shaft. When the push-pull shaft sleeve is clamped with the push-pull card seat, one group of the driven link groups, the active link frame, the push-pull card seat and the tool sleeve form a new parallelogram link structure through the first rotating shaft, the second rotating shaft, the push-pull shaft and the tool sleeve rotating shaft.

[0008] The above-mentioned flipping device for the tool sleeve of the tool magazine further includes a flipping positioning block, which is installed on the tool magazine, and the tool sleeve falls into the positioning surface of the flipping positioning block after flipping 90°.

[0009] In the above-mentioned flipping device for the tool sleeve of the tool magazine, the swing shaft and the fixed mounting seat, the connecting block rotating shaft and the active link frame, the first rotating shaft and the driven rod, the second rotating shaft and the fixed mounting seat, and the tool sleeve rotating shaft and the tool sleeve are all connected through needle bearings.

[0010] The above-mentioned tool sleeve includes a sleeve body, steel balls, a steel ball seat, a steel ball ejector rod, a compression spring and a compression spring seat. The sleeve body is connected to the tool sleeve rotating shaft; the steel ball seat and the compression spring seat are stacked and installed at the bottom of the sleeve body, and a compression spring is arranged on the compression spring seat; a plurality of radial tapered holes are evenly distributed in the circumferential direction on the steel ball seat, the steel balls are placed in the radial tapered holes from the inside to the outside and are tightened from the inside by the steel ball ejector rod; the other end of the steel ball ejector rod is pressed against the compression spring.

[0011] On the above-mentioned sleeve body, a tool holder positioning key is further provided.

[0012] On the outer side of the above-mentioned sleeve body, a push-pull card seat is installed, and a rolling bearing is further arranged between the push-pull card seat and the sleeve body. The rolling bearing cooperates with the guiding device of the tool magazine; a flipping guiding block is further installed on the active link frame, and the flipping guiding block is attached to the upper end of the rolling bearing.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention solves the problems of large vibration and unstable movement when using a flipping tool sleeve in a vertical chain-type tool magazine. By constructing two sets of parallelogram link mechanisms at the front and back, the stability of the structure is effectively enhanced, the flipping action of the tool sleeve is more smooth and stable, and the noise is smaller; the tool sleeve structure adopts the form of steel balls cooperating with a compression spring, so that the tool holder is evenly stressed and has strong stability. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the parallelogram link mechanism of the present invention.

[0016] Figure 3 It is a schematic diagram of the tool holder structure of the present invention. Specific embodiments

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Combined with Figures 1 to 2 As shown, a flipping device for a tool holder of a tool magazine of the present invention includes a fixed mounting base 1, a swing shaft 2, a cylinder 3, a cylinder base 4, a connecting block 5, a connecting block rotating shaft 6, a parallelogram link mechanism 7, a push-pull shaft 8, a tool holder 9, and a push-pull card holder 10.

[0019] The fixed mounting base 1 is fixedly mounted on the fixed base 11 of the tool magazine. The swing shaft 2 is mounted on the fixed mounting base 1 through a needle bearing. The cylinder 3 is mounted on the swing shaft 2 through the cylinder base 4 and can reciprocally swing around the axis of the swing shaft 2. Among them, the cylinder base 4 is fixedly connected to the swing shaft 2, and the cylinder 3 is mounted inside the cylinder base 4; the connecting block 5 is fixedly connected to the end of the cylinder piston rod.

[0020] The parallelogram link mechanism 7 includes a driving link frame 71, an upper driven link group 72, and a lower driven link group 73. The driving link frame 71 includes four hinge positions. Two opposite hinge positions are respectively connected to the upper driven link group 72 and the lower driven link group 73. The other two hinge positions are respectively provided with a connecting block rotating shaft 6 and a push-pull shaft 8. The connecting block rotating shaft 6 is connected to the driving link frame 71 through a needle bearing, and the push-pull shaft 8 is fixedly connected to the driving link frame. A push-pull shaft sleeve 14 is provided on the push-pull shaft 8, and the push-pull shaft sleeve 14 can rotate around the push-pull shaft 8. Both the upper driven link group 72 and the lower driven link group 73 are symmetric double-link structures, that is, they respectively include two driven rods, which are symmetrically distributed on both sides of the driving link frame 71 and are respectively hinged to the driving link frame 71 through a first rotating shaft 74. The first rotating shaft 74 is supported at one end of the driven rod through a needle bearing and is fixedly connected to the driving link frame; the other ends of the driven rods are respectively hinged to the fixed mounting base 1 through a second rotating shaft 75. Among them, the second rotating shaft 75 is fixedly connected to the driven rod and is supported on the fixed mounting base 1 through a needle bearing. The driven rod structures of the upper driven link group 72 and the lower driven link group 73 are the same and are arranged in parallel, so that the driving link frame 71, the upper driven link group 72, and the lower driven link group 73 form a first group of parallelogram link structures through the first rotating shaft 74 and the second rotating shaft 75.

[0021] The connecting block 5 is fixedly connected to the connecting block rotating shaft 6 and can rotate around the axis of the connecting block rotating shaft 6 under the action of the cylinder 3 to drive the parallelogram link mechanism 7 to move. The tool sleeve 9 is hinged to the tool sleeve mounting seat 13 of the tool magazine through the tool sleeve rotating shaft 12. Among them, the tool sleeve rotating shaft 12 is fixedly connected to the tool sleeve mounting seat 13 and is connected to the tool sleeve 9 through a needle roller bearing. A push-pull clamping seat 10 is also installed on one side of the tool sleeve 9. The push-pull clamping seat 10 can clamp the push-pull shaft bushing 14. After clamping, the lower driven link group 73, the driving link frame 71, the push-pull clamping seat 10 and the tool sleeve 9 form a second group of parallelogram link structures through the first rotating shaft 74, the second rotating shaft 75, the push-pull shaft 8 and the tool sleeve rotating shaft 12. With the movement of the parallelogram link mechanism 7, that is, the first group of parallelogram link structures, the second group of parallelogram link structures can be driven to move, so that the tool sleeve 9 can be turned over. To ensure accurate positioning of the tool sleeve 9 during turning, a turning positioning block 15 is also provided on the outer side of the fixed base 11 of the tool magazine. After the tool sleeve 9 is turned over by 90°, it falls into the arc groove positioning surface of the turning positioning block 15.

[0022] A rolling bearing 17 is also provided between the push-pull clamping seat 10 and the tool sleeve 9. After the tool sleeve 9 is installed in the tool magazine, the rolling bearing 17 rolls along the guiding device of the tool magazine. To prevent the rolling bearing 17 from moving up and down in the turning position, a turning guiding block 16 is also installed on the driving link frame 71, and the turning guiding block 16 is attached to the upper end of the rolling bearing.

[0023] As Figure 3 shown, the tool sleeve 9 includes a sleeve body 91, steel balls 92, a steel ball seat 93, a steel ball ejector rod 94, a compression spring 95, a compression spring seat 96 and a tool shank positioning key 97. A rotating shaft hole is provided on the sleeve body 91 for connection with the tool sleeve rotating shaft 12. The steel ball seat 93 and the compression spring seat 96 are stacked and installed at the bottom of the sleeve body 91, and a compression spring 95 is provided in the compression spring seat 96; three radial tapered holes are evenly distributed in the circumferential direction on the steel ball seat 93, the steel balls 92 are placed in the radial tapered holes from the inside to the outside and are tightened from the inside by the steel ball ejector rod 94; the other end of the steel ball ejector rod 94 is pressed against the compression spring. A tool shank positioning key 97 is also provided on the sleeve body 91 for tool shank positioning.

[0024] By constructing two groups of parallelogram link structures, the present invention effectively enhances the structural stability, the turning action of the tool sleeve is more smooth and stable, and the noise is smaller; the tool sleeve structure adopts the form of three steel balls cooperating with a compression spring, so that the force on the tool shank is uniform, further enhancing the stability.

[0025] Although the present invention has been described in detail above, the present invention is not limited thereto, and those skilled in the art can make various modifications according to the principle of the present invention. Therefore, all modifications made according to the principle of the present invention should be understood to fall within the protection scope of the present invention.

Claims

1. A turning device for a tool magazine tool sleeve, characterized in that, It includes a fixed mounting base, a swing shaft, a cylinder, a parallelogram link mechanism and a tool sleeve. The swing shaft is arranged on the fixed mounting base. The cylinder is connected to the swing shaft through a cylinder seat and can reciprocally swing around the axis of the swing shaft. A connecting block is fixed at the end of the piston rod of the cylinder. The parallelogram link mechanism is mounted on the fixed mounting base. A connecting block rotating shaft is arranged on the parallelogram link mechanism. The connecting block is connected to the connecting block rotating shaft and can rotate around the axis of the connecting block rotating shaft under the action of the cylinder and drive the parallelogram link mechanism to move. A push-pull shaft and a push-pull shaft sleeve that can rotate around the push-pull shaft are arranged on the parallelogram link mechanism. A push-pull clamping seat is arranged on the tool sleeve. The push-pull clamping seat can clamp the push-pull shaft sleeve. As the parallelogram link mechanism moves, it drives the tool sleeve to flip. The parallelogram link mechanism includes a driving link frame and a driven link group. The two driven link groups are arranged in parallel and are respectively hinged between the driving link frame and the fixed mounting base, that is, one end of the driven link group is hinged to the driving link frame and the other end is hinged to the fixed mounting base. The connecting block rotating shaft and the push-pull shaft are respectively mounted on the driving link frame. The driven link group is a symmetric double-link structure, that is, each driven link group includes two driven rods. The two driven rods are symmetrically distributed on both sides of the driving link frame and are hinged together with the driving link frame through a first rotating shaft. The first rotating shaft is located at one end of the driven rod. The other ends of the driven rods are respectively hinged to the fixed mounting base through two coaxial second rotating shafts. The tool sleeve is hinged to the tool magazine through a tool sleeve rotating shaft. When the push-pull shaft sleeve is clamped with the push-pull clamping seat, one of the driven link groups forms a new parallelogram link structure with the driving link frame, the push-pull clamping seat and the tool sleeve through the first rotating shaft, the second rotating shaft, the push-pull shaft and the tool sleeve rotating shaft.

2. The flipping device of the tool magazine tool sleeve according to claim 1, wherein, It also includes a flipping positioning block. The flipping positioning block is mounted on the tool magazine. After the tool sleeve flips 90°, it falls into the positioning surface of the flipping positioning block.

3. The flipping device of the tool sleeve of the tool magazine according to claim 2, characterized in that Between the swing shaft and the fixed mounting base, between the connecting block rotating shaft and the driving link frame, between the first rotating shaft and the driven rod, between the second rotating shaft and the fixed mounting base, and between the tool sleeve rotating shaft and the tool sleeve are all connected through needle bearings.

4. The flipping device of a tool magazine tool sleeve according to claim 3, characterized in that, The tool sleeve includes a sleeve body, steel balls, a steel ball seat, a steel ball ejector rod, a compression spring and a compression spring seat. The sleeve body is connected to the tool sleeve rotating shaft. The steel ball seat and the compression spring seat are stacked and installed at the bottom of the sleeve body. A compression spring is arranged on the compression spring seat. A number of radial tapered holes are evenly distributed in the circumferential direction on the steel ball seat. The steel balls are placed in the radial tapered holes from the inside to the outside and are tightly pressed from the inside by the steel ball ejector rod. The other end of the steel ball ejector rod is pressed against the compression spring.

5. The flipping device of the tool magazine tool sleeve according to claim 4, characterized in that, A tool handle positioning key is also arranged on the sleeve body.

6. The flipping device of a tool magazine tool sleeve according to claim 5, characterized in that, A push-pull clamping seat is installed on the outer side of the sleeve body. A rolling bearing is also arranged between the push-pull clamping seat and the sleeve body. The rolling bearing cooperates with the guiding device of the tool magazine. A flipping guiding block is also installed on the driving link frame. The flipping guiding block is attached to the upper end of the rolling bearing.

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