Tool rest for numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a tool rest for a numerical control machine tool, which comprises a tool rest body, a rectangular block is movably mounted at the bottom end in the tool rest body, a tool bit is integrally formed at the bottom end of the rectangular block, and a top block is integrally formed at the top end of the rectangular block; a pair of rod seats is arranged on each of the two sides of the bottom end of the tool rest body, connecting rods are movably mounted in the middles of the rod seats on the two sides, and quick mounting mechanisms are arranged in the middles and at the bottom ends of the connecting rods and comprise racks, gears and movable blocks. The rack, the gear, the movable block, the threaded rod, the clamping head and the clamping groove are used in cooperation, the rectangular block at the top end of the tool bit and the top block are inserted from the bottom end of the tool rest body till the clamping head and the clamping groove are located on the same horizontal line, then the pull rod is loosened, and at the moment, the rack returns to control the gear to rotate reversely; and then the clamping head moves forwards and then is clamped into the clamping groove to be quickly locked, so that locking is more convenient, and falling is not prone to being caused.

Description

Technical Field

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

[0002] The tool holder of a CNC machine tool is a component used to fix and support the cutting tool. The tool holder plays a key role in CNC machine tools. It is not only responsible for maintaining the position of the cutting tool, but also provides support for the cutting force to ensure that the tool can accurately execute the cutting path specified in the CNC program.

[0003] For example, a tool holder for a CNC machine tool disclosed in the authorization announcement number CN217832701U has a shell, the upper end of which is fixedly connected to a mounting seat, a rectangular cavity is provided in the shell, a connecting strip is provided in the rectangular cavity, and the lower end of the connecting strip passes through the inner bottom of the rectangular cavity and is fixedly connected to a tool body. After adopting the above technical solution, the beneficial effect of the utility model is that during the use of the tool holder, compared with the prior art, it greatly facilitates the subsequent disassembly and installation, and facilitates the subsequent replacement of the tool body.

[0004] The above device has a simple structure and reasonable design, can meet the needs of users, and has great promotion value;

[0005] However, the above patent has the following shortcomings:

[0006] When the tool head is installed on the tool holder of the above-mentioned CNC machine tool, the tool head is clamped by manually compressing the gas to control the clamp block. However, when the gas is manually compressed, if the compression amount is not enough, the displacement distance of the clamp block will be insufficient, which will further affect the clamping degree of the clamp block, so that the tool head is easy to fall off during operation. Utility Model Content

[0007] The purpose of the utility model is to provide a tool holder for a numerically controlled machine tool to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A tool holder for a numerically controlled machine tool, comprising

[0010] A tool holder body, wherein a rectangular block is movably mounted at the inner bottom end of the tool holder body, a tool head is integrally formed at the bottom end of the rectangular block, and a top block is integrally formed at the top end of the rectangular block;

[0011] A pair of rod seats are arranged on both sides of the bottom end of the tool holder body, and connecting rods are movably installed in the middle of the rod seats on both sides. A quick-loading mechanism is arranged in the middle and bottom of the connecting rod, and the quick-loading mechanism includes a rack, a gear and a movable block.

[0012] Preferably, a rack is fixedly installed in the middle of the connecting rod, and gears are arranged at the bottom ends of the tool holder body close to the two racks, the gears are meshed with the racks, and threaded rods are fixedly installed at one end of the two gears located inside the tool holder body, and the other end of the threaded rod is threadedly connected to the middle of the movable block;

[0013] Preferably, a clamping head is fixedly installed at one end of the movable block away from the threaded rod, a clamping groove is provided in the middle of both sides of the rectangular block, guide blocks are fixedly connected to the outer walls of both sides of the movable block, and a guide groove slidably connected to the guide block is provided on the outer side of the tool holder body close to the guide block;

[0014] Preferably, clamping grooves are provided on both sides of the top of the top block, and clamping plates are movably installed on both sides of the inner top of the tool holder body through a rotating shaft, and the bottom ends of the two clamping plates are respectively clamped in the clamping grooves on both sides;

[0015] Preferably, the tool holder body is provided with a fixing block at the top end close to the two clamping plates, the bottom ends of the two fixing blocks are fixedly mounted with a first spring, and the other ends of the two first springs are fixedly connected to the two clamping plates respectively;

[0016] Preferably, a pull rod is integrally formed between the right end heads of the two connecting rods, a sleeve is fixedly installed on the outside of the left rod seat, a second spring is fixedly installed on one end inside the sleeve, and the other end of the second spring is fixedly connected to the connecting rod.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. A tool holder for a CNC machine tool is used in combination with a rack, a gear, a movable block, a threaded rod, a chuck and a slot. The rectangular block on the top of the tool head and the top block are inserted from the bottom of the tool holder body until the chuck and the slot are on the same horizontal line, and then the pull rod is released. At this time, the rack retreats and controls the gear to reverse, so that the chuck moves forward and is quickly locked in the slot. This makes locking more convenient and less likely to cause falling off.

[0019] 2. This kind of tool holder for CNC machine tools is used in combination with a top block, a clamping plate, a clamping groove, a fixed block and a first spring. When the top block is inserted from the bottom end of the tool holder body and pushes up the two clamping plates, when the top end of the clamping plate is flipped up, its lower end will be synchronously stuck in the clamping grooves on both sides of the top block and fixed. When the tool head is subjected to external pressure, the top block will be synchronously controlled to push up. The greater the top block's pushing force, the higher the clamping degree of the clamping groove and the clamping plate, and thus more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the quick-loading mechanism of the utility model;

[0022] Figure 3 It is a schematic diagram of the clamping plate of the utility model;

[0023] Figure 4 It is a schematic diagram of the second spring of the utility model.

[0024] In the figure: 1. tool holder body; 2. rectangular block; 3. tool head; 4. top block; 5. rod seat; 6. connecting rod; 7. quick-release mechanism; 701. rack; 702. gear; 703. movable block; 8. threaded rod; 9. clamping head; 10. clamping groove; 11. guide block; 12. clamping groove; 13. clamping plate; 14. fixed block; 15. first spring; 16. pull rod; 17. sleeve; 18. second spring. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1-4 As shown, a technical solution provided by the utility model:

[0027] A tool holder for a numerically controlled machine tool comprises a tool holder body 1, a rectangular block 2 is movably mounted at the bottom of the tool holder body 1, a tool head 3 is integrally formed at the bottom of the rectangular block 2, and a top block 4 is integrally formed at the top of the rectangular block 2; a pair of rod seats 5 are arranged on both sides of the bottom of the tool holder body 1, a connecting rod 6 is movably mounted in the middle of the rod seats 5 on both sides, a quick-loading mechanism 7 is arranged in the middle and bottom of the connecting rod 6, and the quick-loading mechanism 7 comprises a rack 701, a gear 702 and a movable block 703; a rack 701 is fixedly mounted in the middle of the connecting rod 6, and the tool holder body 1 is close to the two gears. A gear 702 is provided at the bottom end of the rack 701, and the gear 702 is meshed with the rack 701. The two gears 702 are located at one end of the inner part of the tool holder body 1, and a threaded rod 8 is fixedly installed. The other end of the threaded rod 8 is threadedly connected to the middle part of the movable block 703; a clamping head 9 is fixedly installed at the end of the movable block 703 away from the threaded rod 8, and a clamping groove 10 is provided in the middle part of both sides of the rectangular block 2. Guide blocks 11 are fixedly connected to the outer walls of both sides of the movable block 703, and guide grooves slidably connected to the guide blocks 11 are provided on the outer side of the tool holder body 1 near the guide blocks 11.

[0028] In this embodiment, during installation, the pull rod 16 is pulled outward by hand, and the pull rod 16 drives the connecting rod 6 to move synchronously. When the connecting rod 6 moves, the gear 702 is controlled to rotate through the rack 701. When the gear 702 rotates, it drives the threaded rod 8 to rotate. When the threaded rod 8 rotates, the clamping head 9 on one side of the movable block 703 is controlled to be retracted, and then the rectangular block 2 at the top of the cutter head 3 together with the top block 4 are inserted from the bottom end of the tool holder body 1 until the clamping head 9 and the slot 10 are on the same horizontal line, and then the pull rod 16 is released. At this time, the rack 701 retreats and controls the gear 702 to reverse, so that the clamping head 9 moves forward and is clamped into the slot 10 for quick locking. This makes locking more convenient and less likely to cause falling off.

[0029] like Figure 1 and Figure 3 As shown, both sides of the top of the top block 4 are provided with clamping grooves 12, and both sides of the inner top of the tool holder body 1 are movably installed with clamping plates 13 through a rotating shaft, and the bottom ends of the two clamping plates 13 are respectively clamped with the clamping grooves 12 on both sides, and the tool holder body 1 is provided with a fixing block 14 near the top of the two clamping plates 13, and the bottom ends of the two fixing blocks 14 are fixedly installed with a first spring 15, and the other ends of the two first springs 15 are respectively fixedly connected with the two clamping plates 13;

[0030] In this embodiment, when the top block 4 is inserted from the bottom end of the tool holder body 1 and pushes up the two clamping plates 13, when the top end of the clamping plate 13 is turned up, its lower end will be synchronously inserted into the clamping grooves 12 on both sides of the top block 4 and fixed. When the cutter head 3 is subjected to external pressure, the top block 4 will be synchronously controlled to push up. The greater the pushing force of the top block 4, the higher the clamping degree of the clamping groove 12 and the clamping plate 13, and thus more stable.

[0031] like Figure 4 As shown, a pull rod 16 is integrally formed between the right ends of the two connecting rods 6, a sleeve 17 is fixedly installed on the outside of the left rod seat 5, a second spring 18 is fixedly installed on one end of the inside of the sleeve 17, and the other end of the second spring 18 is fixedly connected to the connecting rod 6;

[0032] In this embodiment, when the pull rod 16 is released, the second spring 18 stretched inside the sleeve 17 will control the connecting rod 6 to retreat into the sleeve 17, so that automatic locking can be achieved after letting go.

[0033] Working principle: During installation, hold the pull rod 16 and pull it outward, the pull rod 16 drives the connecting rod 6 to move synchronously, when the connecting rod 6 moves, the gear 702 is controlled to rotate through the rack 701, when the gear 702 rotates, it drives the threaded rod 8 to rotate, when the threaded rod 8 rotates, the clamping head 9 on one side of the movable block 703 is controlled to be retracted, and then the rectangular block 2 at the top of the cutter head 3 together with the top block 4 are inserted from the bottom end of the tool holder body 1 until the clamping head 9 and the card slot 10 are on the same horizontal line, and then the pull rod 16 is released, At this time, the rack 701 retreats and controls the gear 702 to reverse, so that the clamping head 9 moves forward and then snaps into the clamping slot 10 and is quickly locked; when the top block 4 is inserted from the bottom end of the tool holder body 1 and pushes up the two clamping plates 13, when the top end of the clamping plate 13 is turned up, its lower end will be synchronously snapped into the clamping grooves 12 on both sides of the top block 4 and fixed. When the tool head 3 is subjected to external pressure, the top block 4 will be synchronously controlled to push up. The greater the pushing force of the top block 4, the higher the clamping degree of the clamping groove 12 and the clamping plate 13, and thus more stable.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A tool rest for a CNC machine tool, characterized in that: include A tool holder body (1), wherein a rectangular block (2) is movably mounted at the bottom of the tool holder body (1), a tool head (3) is integrally formed at the bottom of the rectangular block (2), and a top block (4) is integrally formed at the top of the rectangular block (2); A pair of rod seats (5) are provided on both sides of the bottom end of the tool holder body (1); a connecting rod (6) is movably installed in the middle of the rod seats (5) on both sides; a quick-install mechanism (7) is provided in the middle and bottom of the connecting rod (6); the quick-install mechanism (7) comprises a rack (701), a gear (702) and a movable block (703).

2. The tool rest for a CNC machine tool according to claim 1, characterized in that: A rack (701) is fixedly installed in the middle of the connecting rod (6); gears (702) are arranged on the tool holder body (1) near the bottom ends of the two racks (701); the gears (702) are meshed with the racks (701); a threaded rod (8) is fixedly installed at one end of the two gears (702) located inside the tool holder body (1); the other end of the threaded rod (8) is threadedly connected to the middle of the movable block (703).

3. The tool rest for a CNC machine tool according to claim 2, characterized in that: A clamping head (9) is fixedly installed at one end of the movable block (703) away from the threaded rod (8), a clamping groove (10) is provided in the middle of both sides of the rectangular block (2), and guide blocks (11) are fixedly connected to the outer walls of both sides of the movable block (703), and a guide groove slidably connected to the guide block (11) is provided on the outer side of the tool holder body (1) close to the guide block (11).

4. The tool rest for a CNC machine tool according to claim 1, characterized in that: Clamping grooves (12) are provided on both sides of the top of the top block (4), and clamping plates (13) are movably installed on both sides of the inner top of the tool holder body (1) through a rotating shaft, and the bottom ends of the two clamping plates (13) are respectively clamped in the clamping grooves (12) on both sides.

5. The tool rest for a CNC machine tool according to claim 4, characterized in that: The tool holder body (1) is provided with a fixing block (14) near the top of the two clamping plates (13), and the bottom ends of the two fixing blocks (14) are fixedly installed with a first spring (15), and the other ends of the two first springs (15) are respectively fixedly connected to the two clamping plates (13).

6. The tool rest for a CNC machine tool according to claim 1, characterized in that: A pull rod (16) is integrally formed between the right end heads of the two connecting rods (6), a sleeve (17) is fixedly installed on the outside of the left rod seat (5), a second spring (18) is fixedly installed on one end inside the sleeve (17), and the other end of the second spring (18) is fixedly connected to the connecting rod (6).

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