A vertical machining center tool anti-falling device

Abstract

The utility model discloses a kind of vertical machining center tool anti-falling devices, it is related to machining tool technical field, including movable shaft, movable shaft upper end is fixedly installed with carousel, movable shaft middle position is movably installed with positioning rod, positioning rod upper end is fixedly installed with positioning plate, carousel is fixedly installed with clamping mechanism, clamping mechanism includes the fixture body of fixed installation in the edge of carousel, clamping piece is rotatably installed in fixture body two sides, wedge block is fixedly installed on clamping piece, driving block is movably installed between wedge block, tension spring is installed between clamping piece and fixture body, driving assembly is fixedly installed on positioning plate. The vertical machining center tool anti-falling device, through the cooperation of clamping mechanism and driving assembly, the locking and release operation of tool can be realized, after tool locking, threaded rod and threaded sleeve are self-locked by friction force, can prevent clamping piece to move randomly, reduce the risk of tool falling.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically a tool anti-drop device for vertical machining centers. Background Technology

[0002] The tool changing process of a machining center is the core manifestation of its high-efficiency automation. Through a large number of tools pre-installed in the tool magazine and an automatic tool changer (ATC), under the control of the CNC program, it can automatically exchange old and new tools in a very short time without human intervention.

[0003] In the prior art, patent announcement number CN209520646U discloses a tool changing device for a machining center, including a machining center spindle and a tool. A tool magazine is provided on one side of the machining center spindle. The tool magazine is composed of a clamping mechanism and a turntable, and the clamping mechanism is mounted on the turntable.

[0004] During tool changing operations, a specialized clamp is typically used to securely hold the end mill to be replaced. In this clamp design, the key clamping component is a built-in spring that provides the necessary clamping force. The spring maintains a certain compression in its natural state, generating an outward elastic force, which allows the clamp to firmly hold the end mill. However, when the tool is subjected to external pulling during the change, the spring will expand and contract accordingly. This expansion and contraction not only weakens the clamp's gripping force but may also cause the tool to loosen. Once the tool loosens, there is a significant risk of it falling, which not only affects the smooth progress of the changeover but may also threaten the safety of the operator. Therefore, a tool anti-drop device for vertical machining centers is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a tool anti-drop device for vertical machining centers to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tool anti-drop device for a vertical machining center, comprising a movable shaft, a turntable fixedly mounted on the upper end of the movable shaft, a positioning rod movably mounted at the middle position of the movable shaft, a positioning plate fixedly mounted on the upper end of the positioning rod, a clamping mechanism fixedly mounted on the turntable, the clamping mechanism comprising a clamping body fixedly mounted at the edge of the turntable, clamping members rotatably mounted on both sides of the clamping body, wedge blocks fixedly mounted on the clamping members, a driving block movably mounted between the wedge blocks, a tension spring mounted between the clamping members and the clamping body, and a driving assembly fixedly mounted on the positioning plate.

[0007] Preferably, a threaded sleeve is fixedly installed on the fixture body, a threaded rod is threadedly installed inside the threaded sleeve, a connecting rod is slidably installed inside the threaded sleeve, one end of the connecting rod is fixedly installed on the drive block, and the other end of the connecting rod is rotatably installed on the threaded rod.

[0008] Preferably, the clamping member has a movable hole, and the clamping member is rotatably mounted on the clamp body through the movable hole.

[0009] Preferably, one end of the tension spring is on the clamping member, and the other end of the tension spring is fixed on the clamping body. The driving block is movably installed between the wedge blocks via a connecting rod.

[0010] Preferably, the drive assembly includes a positioning seat fixedly mounted on a positioning plate, a sliding plate slidably mounted on the positioning seat, an electric push rod fixedly mounted inside the positioning seat, and the output end of the electric push rod fixedly mounted on the bottom of the sliding plate. A motor and a mounting base are fixedly mounted on the sliding plate, a positioning sleeve is rotatably mounted inside the mounting base, a spring is installed inside the positioning sleeve, a drive rod is slidably mounted inside the positioning sleeve, and a drive shaft is fixedly mounted on the output end of the motor, with the end of the drive shaft fixedly mounted on the positioning sleeve.

[0011] Preferably, the output end of the motor is provided with a coupling, and the drive shaft is fixedly installed at the output end of the motor through the coupling.

[0012] Preferably, a bearing is installed inside the mounting base, and the positioning sleeve is rotatably mounted on the mounting base via the bearing.

[0013] Preferably, one end of the spring is connected to the drive rod, and the other end of the spring is connected to the bottom of the positioning sleeve. The drive rod is rotatably mounted on the mounting base through the positioning sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this application, the rotating threaded rod drives the connecting rod to move back and forth. When the connecting rod moves forward, the tension spring pulls the clamping member to unfold, allowing the tool to enter the inner side of the clamp body; when the connecting rod moves backward, the drive block applies a compressive force to the wedge block, causing the unfolded clamping member to close, thereby fixing the tool inside the clamp body. The threaded rod and threaded sleeve achieve self-locking through friction, which can effectively prevent the clamping member from moving freely and reduce the probability of the tool falling out.

[0015] 2. In this application, an electric push rod can be used to drive the slide plate forward. After the slide plate moves forward, it will drive the drive rod to move forward, causing the drive rod to engage with the threaded rod. The engagement can start the motor, which will drive the drive shaft to rotate. The rotation of the drive shaft will drive the positioning sleeve to rotate, and the rotation of the positioning sleeve will drive the drive rod to rotate. In turn, the drive rod will drive the threaded rod to rotate, realizing the locking and releasing operation of the tool. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the clamping mechanism of this utility model; Figure 4 This is a schematic diagram of the driving component of this utility model.

[0017] The markings in the diagram are: 1. Positioning rod; 2. Movable shaft; 3. Turntable; 4. Positioning plate; 5. Clamping mechanism; 501. Clamp body; 502. Tension spring; 503. Clamping component; 504. Drive block; 505. Wedge block; 506. Connecting rod; 507. Threaded sleeve; 508. Threaded rod; 6. Drive assembly; 601. Positioning seat; 602. Electric push rod; 603. Slide plate; 604. Motor; 605. Drive shaft; 606. Positioning sleeve; 607. Mounting base; 608. Spring; 609. Drive rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a tool anti-drop device for a vertical machining center, including a movable shaft 2, a turntable 3 fixedly installed on the upper end of the movable shaft 2, a positioning rod 1 movably installed in the middle position of the movable shaft 2, a positioning plate 4 fixedly installed on the upper end of the positioning rod 1, a clamping mechanism 5 fixedly installed on the turntable 3, and a drive assembly 6 fixedly installed on the positioning plate 4.

[0020] Specifically, the movable shaft 2 drives the turntable 3 to rotate, thereby moving the tool at the edge of the turntable 3 to the replacement position. Through the cooperation of the clamping mechanism 5 and the drive assembly 6, the tool locking and releasing operations can be realized. After the tool is locked, the threaded rod 508 and the threaded sleeve 507 self-lock through friction, which can prevent the clamping part 503 from moving freely and reduce the risk of the tool falling.

[0021] Example 2: Figure 2 and Figure 3 As shown, the clamping mechanism 5 includes a clamping body 501 fixedly installed at the edge of the turntable 3. Clamping members 503 are rotatably installed on both sides of the clamping body 501. Wedge blocks 505 are fixedly installed on the clamping members 503. A driving block 504 is movably installed between the wedge blocks 505. A tension spring 502 is installed between the clamping members 503 and the clamping body 501. A threaded sleeve 507 is fixedly installed on the clamping body 501. A threaded rod 508 is threadedly installed inside the threaded sleeve 507. A connecting rod 506 is slidably installed inside the threaded sleeve 507. One end of the connecting rod 506 is fixedly installed on the driving block 504, and the other end of the connecting rod 506 is rotatably installed on the threaded rod 508.

[0022] Specifically, rotating the threaded rod 508 effectively drives the connecting rod 506 to move back and forth. When the connecting rod 506 moves forward, the tension spring 502 pulls the clamping member 503 to gradually unfold, allowing the tool to smoothly enter the inner space of the clamp body 501. Conversely, when the connecting rod 506 moves backward, the drive block 504 applies pressure to the wedge block 505, causing the unfolded clamping member 503 to gradually close, thus firmly fixing the tool in the inner position of the clamp body 501. In addition, the threaded rod 508 and the threaded sleeve 507 achieve a self-locking function through friction, which effectively prevents the clamping member 503 from moving arbitrarily without control, thereby greatly reducing the risk of the tool accidentally falling out and ensuring the stability and safety of the entire clamping system.

[0023] Example 3: Figure 2 and Figure 4As shown, the drive assembly 6 includes a positioning seat 601 fixedly mounted on the positioning plate 4, a sliding plate 603 slidably mounted on the positioning seat 601, an electric push rod 602 fixedly mounted inside the positioning seat 601, and the output end of the electric push rod 602 fixedly mounted on the bottom of the sliding plate 603. A motor 604 and a mounting base 607 are fixedly mounted on the sliding plate 603. A positioning sleeve 606 is rotatably mounted inside the mounting base 607. A spring 608 is installed inside the positioning sleeve 606. A drive rod 609 is slidably mounted inside the positioning sleeve 606. A drive shaft 605 is fixedly mounted on the output end of the motor 604, and the end of the drive shaft 605 is fixedly mounted on the positioning sleeve 606. A coupling is provided at the output end of the motor 604, and the drive shaft 605 is fixedly mounted to the output end of the motor 604 through the coupling.

[0024] Specifically, driven by the electric push rod 602, the slide plate 603 can be effectively driven to move smoothly forward along the preset track. When the slide plate 603 moves forward under the push of the electric push rod 602, the front end of the drive rod 609 will precisely engage with the threaded rod 508. After engagement, the motor 604 drives the drive shaft 605 to rotate. The rotation of the drive shaft 605 is transmitted to the positioning sleeve 606, causing the positioning sleeve 606 to rotate as well. The rotation of the positioning sleeve 606 further drives the drive rod 609 connected to it to rotate. The rotation of the drive rod 609 is finally transmitted to the threaded rod 508, causing the threaded rod 508 to rotate as well. The rotation of the threaded rod 508 can achieve precise locking or releasing of the tool.

[0025] Working principle: Rotating the threaded rod 508 can drive the connecting rod 506 to move back and forth. When the connecting rod 506 moves forward, the tension spring 502 will pull the clamping member 503 to unfold, allowing the tool to enter the inside of the clamp body 501. When the connecting rod 506 moves backward, the drive block 504 will squeeze the wedge block 505, causing the unfolded clamping member 503 to close and fix the tool inside the clamp body 501. The threaded rod 508 and the threaded sleeve 507 are self-locked by friction, which can prevent the clamping member 503 from moving freely and reduce the risk of the tool falling off. The electric push rod 602 can drive the slide plate 603 to move forward. After the slide plate 603 moves forward, it will drive the drive rod 609 to move forward, so that the drive rod 609 is engaged with the threaded rod 508. The engagement of the drive rod 609 with the threaded rod 508 puts the spring 608 in a compressed state. Then the motor 604 can be started. After the motor 604 is started, it will drive the drive shaft 605 to rotate. After the drive shaft 605 rotates, it will drive the positioning sleeve 606 to rotate. After the positioning sleeve 606 rotates, it will drive the drive rod 609 to rotate. Thus, the drive rod 609 drives the threaded rod 508 to rotate, thereby achieving the locking and releasing operation of the tool.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tool anti-drop device for a vertical machining center, comprising a movable shaft (2), a turntable (3) fixedly mounted on the upper end of the movable shaft (2), a positioning rod (1) movably mounted in the middle position of the movable shaft (2), and a positioning plate (4) fixedly mounted on the upper end of the positioning rod (1), characterized in that: A clamping mechanism (5) is fixedly installed on the turntable (3). The clamping mechanism (5) includes a clamp body (501) fixedly installed on the edge of the turntable (3). Clamping parts (503) are rotatably installed on both sides of the clamp body (501). Wedge blocks (505) are fixedly installed on the clamping parts (503). A drive block (504) is movably installed between the wedge blocks (505). A tension spring (502) is installed between the clamping parts (503) and the clamp body (501). A drive assembly (6) is fixedly installed on the positioning plate (4).

2. The tool anti-drop device for a vertical machining center according to claim 1, characterized in that: A threaded sleeve (507) is fixedly installed on the fixture body (501). A threaded rod (508) is threadedly installed inside the threaded sleeve (507). A connecting rod (506) is slidably installed inside the threaded sleeve (507). One end of the connecting rod (506) is fixedly installed on the drive block (504), and the other end of the connecting rod (506) is rotatably installed on the threaded rod (508).

3. The tool anti-drop device for a vertical machining center according to claim 2, characterized in that: The clamping member (503) has a movable hole, and the clamping member (503) is rotatably mounted on the clamp body (501) through the movable hole.

4. The tool anti-drop device for a vertical machining center according to claim 3, characterized in that: One end of the tension spring (502) is on the clamping member (503), and the other end of the tension spring (502) is fixed on the clamp body (501). The driving block (504) is movably installed between the wedge blocks (505) through the connecting rod (506).

5. The tool anti-drop device for a vertical machining center according to claim 4, characterized in that: The drive assembly (6) includes a positioning seat (601) fixedly mounted on a positioning plate (4), a sliding plate (603) slidably mounted on the positioning seat (601), an electric push rod (602) fixedly mounted inside the positioning seat (601), and the output end of the electric push rod (602) fixedly mounted on the bottom of the sliding plate (603). A motor (604) and a mounting base (607) are fixedly mounted on the sliding plate (603). A positioning sleeve (606) is rotatably mounted inside the mounting base (607). A spring (608) is installed inside the positioning sleeve (606). A drive rod (609) is slidably mounted inside the positioning sleeve (606). A drive shaft (605) is fixedly mounted on the output end of the motor (604), and the end of the drive shaft (605) is fixedly mounted on the positioning sleeve (606).

6. The tool anti-drop device for a vertical machining center according to claim 5, characterized in that: The output end of the motor (604) is provided with a coupling, and the drive shaft (605) is fixedly installed at the output end of the motor (604) through the coupling.

7. A tool anti-drop device for a vertical machining center according to claim 6, characterized in that: The mounting base (607) is equipped with a bearing, and the positioning sleeve (606) is rotatably mounted on the mounting base (607) via the bearing.

8. A tool anti-drop device for a vertical machining center according to claim 7, characterized in that: One end of the spring (608) is connected to the drive rod (609), and the other end of the spring (608) is connected to the bottom of the positioning sleeve (606). The drive rod (609) is rotatably mounted on the mounting base (607) through the positioning sleeve (606).

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