Cutter handle fixing device for cutter presetting instrument

Abstract

The utility model discloses a tool holder fixing device for a tool presetting instrument, which comprises a tool setting instrument main body, a conversion seat, a tool holder and a clamping mechanism used for installing and replacing the tool holder, and the clamping mechanism comprises a fixing ring and an extrusion assembly used for driving the fixing ring to clamp and fix the tool holder. The extrusion assembly is arranged to drive the fixing rings to extrude and fix the cutter handle, the clamping blocks on the inner walls of the two sets of fixing rings are clamped in the clamping grooves formed in the outer arc face of the cutter handle, the requirement for clamping the cutter handle is met, and when the cutter handle needs to be replaced, a worker only needs to extrude the extrusion rods at the two ends of the conversion base at the same time, and the cutter handle can be replaced. The extrusion rod extrudes the L-shaped frame, the transmission module drives the two sets of fixing rings to move in the opposite direction of the L-shaped frame, the clamping blocks are made to be away from the clamping grooves, the cutter handle pops up towards the upper portion of the inserting groove under the elastic force of the buffer spring at the bottom of the inserting base, and the requirement for replacing the cutter handle can be met.

Description

Technical Field

[0001] This utility model relates to the field of precision manufacturing equipment technology, specifically to a tool holder fixing device for a tool pre-adjustment instrument. Background Technology

[0002] A tool presetting device, also known as a tool setter, is a measuring device that can pre-adjust and measure the tool tip diameter and clamping length, and input tool data into the NC program of a machining center. With the widespread use of NC machine tools equipped with multi-tool automatic tool changers, the market for high-precision, high-efficiency tool presetting devices is continuously expanding. Because different machine tools and application scenarios have different requirements for tools, and the specifications and models of tools are also diverse, tool holder changing clamping devices are used to clamp and change tools of different specifications.

[0003] A search revealed that in the prior art, publication number CN222359703U discloses a tool holder fixing device for a tool pre-adjustment instrument, comprising a connecting part, a positioning part, and a locking part. The connecting part includes a first tool holder connector, and the locking part is disposed on the outer wall of the first tool holder connector, with at least two sets of locking parts. The positioning part is fixedly connected to the bottom of the first tool holder connector. Through the coordinated use of the connecting part, positioning part, and locking part, the connecting part is responsible for connecting with the tool holder, ensuring a precise fit with the tool holder. The locking part provides enhanced positioning, preventing the tool holder from falling off during machining. By setting an intermediate conversion part, which serves as a key component connecting the first and second tool holder connectors, it possesses extremely high strength and rigidity to withstand the cutting forces during machining. Furthermore, it ensures that the axes of the two sets of tool holders are precisely aligned, reducing radial runout error during tool head machining, thereby improving machining accuracy.

[0004] However, existing tool holder change clamping devices use threaded pins connected to threaded through holes, which clamps the tool at the end of the threaded pin. When the tool holder needs to be replaced, the worker has to rotate the threaded pin repeatedly, resulting in low efficiency in tool holder replacement. Therefore, a tool holder fixing device for tool presetting instruments is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a tool holder fixing device for a tool pre-adjustment instrument. By setting up a compression component to drive the fixing rings to compress and fix the tool holder, the locking blocks on the inner walls of the two sets of fixing rings are engaged with the slots opened on the outer arc surface of the tool holder. When the tool holder needs to be replaced, simply compress the compression rod, and the transmission module will drive the locking blocks inside the two sets of fixing rings away from the slots. The tool holder will be ejected from the slot by the buffer spring at the bottom of the socket, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tool holder fixing device for a tool presetting instrument includes a tool setting instrument body, a conversion seat, a tool holder, and a clamping mechanism for installing and replacing the tool holder. The conversion seat is fixedly installed with the tool setting instrument body, and the tool holder is inserted into the top of the conversion seat.

[0008] The clamping mechanism includes a retaining ring and a pressing component for engaging and fixing the tool holder by driving the retaining ring.

[0009] The clamping mechanism also includes a slot and a buffer assembly for cushioning during tool holder replacement.

[0010] Preferably, there are two sets of fixing rings, and each set of fixing rings has a locking block on its opposite sidewall. The locking blocks are respectively engaged with the locking grooves opened on the outer arc surface of the tool holder.

[0011] The extrusion components are respectively positioned above the two sets of fixing rings.

[0012] Preferably, the extrusion assembly includes an extrusion rod, a fixing strip, and a transmission module for connecting the fixing strip and the extrusion rod. The slot has symmetrical mounting slots on both sides above the expansion groove. The end of the extrusion rod passes through the side wall of the conversion seat and is fixedly installed with an L-shaped frame inside the mounting slot. The fixing strips are respectively set on the outer side walls of two sets of fixing rings facing away from each other. The transmission module is set between the L-shaped frame and the fixing strip.

[0013] Preferably, the transmission module includes teeth and gears. The teeth are respectively disposed on the opposite side walls of the L-shaped frame and the fixing bar. The through expansion groove below the mounting groove is also provided with a sliding groove that communicates with the outside of the conversion seat. The gear is rotatably disposed between the fixing bar and the L-shaped frame. The teeth on the opposite side walls of the fixing bar and the L-shaped frame are respectively meshed with the gear.

[0014] Preferably, the two sets of L-shaped frames are fixedly installed between their adjacent sidewalls and the inner wall of the mounting groove by compression springs.

[0015] Preferably, the buffer assembly includes a buffer spring and a socket, with the bottom end of the buffer spring fixedly installed to the inner bottom surface of the socket and the top end of the buffer spring fixedly installed to the bottom surface of the socket.

[0016] Preferably, the inner bottom surface of the slot is further provided with a stop post, which is disposed inside the buffer spring and the top of the stop post does not contact the bottom surface of the socket.

[0017] Preferably, the top surface of the socket is further provided with a convex ball, which fits into the groove on the bottom surface of the knife handle.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention uses a compression assembly to drive the fixing rings to compress and fix the tool handle, so that the locking blocks on the inner walls of the two sets of fixing rings engage with the slots opened on the outer arc surface of the tool handle, thus fulfilling the need for clamping the tool handle. When the tool handle needs to be replaced, the worker only needs to simultaneously compress the compression rods at both ends of the conversion seat. The compression rods compress the L-shaped frame, and the transmission module drives the two sets of fixing rings to move in opposite directions to the L-shaped frame, so that the locking blocks move away from the slots. Under the elastic force of the buffer spring at the bottom of the socket, the tool handle pops out upwards into the slot, thus fulfilling the need for tool handle replacement. Attached Figure Description

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

[0021] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the conversion seat of this utility model;

[0022] Figure 3 This is a schematic diagram of the original structure of the extrusion rod of this utility model;

[0023] Figure 4 This is a schematic diagram of the pressing state structure of the extrusion rod of this utility model;

[0024] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Tool setter body; 2. Converter seat; 3. Tool holder; 4. Clamping mechanism; 5. Slot; 6. Buffer spring; 7. Support post; 8. Socket; 9. Protruding ball; 10. Slide groove; 11. Slot; 12. Fixing ring; 13. Fixing strip; 14. Tooth; 15. Gear; 16. L-shaped frame; 17. Locking block; 18. Compression spring; 19. Mounting slot; 20. Extrusion rod; 21. Expansion slot. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-5 This utility model provides a technical solution:

[0028] The tool holder fixing device for the tool presetting instrument includes a tool setting instrument body 1, a conversion seat 2, a tool holder 3, and a clamping mechanism 4 for installing and replacing the tool holder 3. The conversion seat 2 is fixedly installed with the tool setting instrument body 1, and the tool holder 3 is inserted into the top of the conversion seat 2.

[0029] The clamping mechanism 4 includes a retaining ring 12 and a pressing assembly for engaging and fixing the tool holder 3 with the retaining ring 12;

[0030] The clamping mechanism 4 also includes a slot 5 and a buffer assembly for cushioning when changing the tool holder 3.

[0031] Two sets of fixing rings 12 are provided. Each set of fixing rings 12 has a locking block 17 on its opposite side wall. The locking block 17 is engaged with the locking groove 11 opened on the outer arc surface of the tool holder 3.

[0032] The extrusion components are respectively positioned above the two sets of fixing rings 12.

[0033] By providing locking blocks 17 inside the opposing sidewalls of the two sets of fixing rings 12, the locking blocks 17 engage with the slots 11 opened on the outer arc surface of the tool holder 3, and the original positions of the two sets of fixing rings 12 are mutually fitted. When the tool holder 3 needs to be clamped and replaced, the squeezing component is used to drive the two fixing rings 12 to move in opposite directions, so that the two sets of fixing rings 12 enter the two ends of the expansion groove 21. By placing the bottom end of the tool holder 3 above the socket 8 and pressing it into the slot 5, when the bottom surface of the socket 8 abuts against the abutment 7, the squeezing component is released, and the fixing rings 12 are driven to move relative to the tool holder 3, so that the locking blocks 17 on the inner wall of the fixing rings 12 engage with the slots 11 on the outer arc surface of the tool holder 3, thereby realizing the clamping and replacement of the tool holder 3, which is more time-saving and labor-saving.

[0034] The extrusion assembly includes an extrusion rod 20, a fixing strip 13, and a transmission module for connecting the fixing strip 13 and the extrusion rod 20. The slot 5 has symmetrical mounting slots 19 on both sides above the expansion slot 21. The end of the extrusion rod 20 passes through the side wall of the conversion seat 2 and is fixedly installed with the L-shaped frame 16 inside the mounting slot 19. The fixing strips 13 are respectively set on the opposite outer side walls of the two sets of fixing rings 12. The transmission module is set between the L-shaped frame 16 and the fixing strips 13.

[0035] An extrusion rod 20 is installed through the side wall of the conversion seat 2 and the L-shaped frame 16 inside the mounting slot 19. The transmission module is located between the L-shaped frame 16 and the fixing strip 13, so that the worker can move the L-shaped frame 16 into the mounting slot 19 by extruding the extrusion rod 20. The L-shaped frame 16 causes the two sets of fixing rings 12 to move in the opposite direction to the L-shaped frame 16 through the transmission module. The locking block 17 on the inner wall of the fixing ring 12 moves away from the locking groove 11 on the side wall of the tool holder 3, so that the worker can pull the tool holder 3 out of the slot 5 to replace the tool holder 3.

[0036] The transmission module includes teeth 14 and gears 15. Teeth 14 are respectively disposed on the opposite side walls of L-shaped frame 16 and fixing bar 13. The expansion groove 21 below the mounting groove 19 is also provided with a sliding groove 10 that communicates with the outside of the conversion seat 2. Gears 15 are rotatably disposed between fixing bar 13 and L-shaped frame 16. Teeth 14 on the opposite side walls of fixing bar 13 and L-shaped frame 16 are respectively meshed with gears 15.

[0037] The device also features teeth 14 fixedly mounted on the side walls opposite to the L-shaped frame 16 and the fixing strip 13. A gear 15 is rotatably mounted inside the slide groove 10 between the fixing strip 13 and the L-shaped frame 16. The gear 15 meshes with the teeth 14 on the side walls of the fixing strip 13 and the L-shaped frame 16. The adjacent side walls of the two sets of L-shaped frames 16 are fixedly mounted to the inner wall of the mounting groove 19 by compression springs 18. When the worker manually squeezes the squeezing rod 20, the two sets of L-shaped frames 16 move toward the tool holder 3. The teeth 14 on the bottom surface of the L-shaped frame 16 mesh with the gear 15, causing the gear 15 to rotate. The gear 15 meshes with the teeth 14 on the surface of the fixing strip 13, thereby causing the two sets of fixing rings 12 to move in opposite directions and move toward both ends of the expansion groove 21. This causes the locking block 17 to move away from the locking groove 11, allowing the worker to pull the tool holder 3 out of the slot 5 and replace the tool holder 3.

[0038] The buffer assembly includes a buffer spring 6 and a socket 8. The bottom end of the buffer spring 6 is fixedly installed with the inner bottom surface of the slot 5, and the top end of the buffer spring 6 is fixedly installed with the bottom surface of the socket 8. The inner bottom surface of the slot 5 is also provided with a stop post 7. The stop post 7 is located inside the buffer spring 6 and the top end of the stop post 7 does not contact the bottom surface of the socket 8. The top surface of the socket 8 is also provided with a protruding ball 9, which fits into the groove on the bottom surface of the handle 3.

[0039] Finally, a stop post 7 is fixedly installed on the inner bottom surface of the slot 5, and a buffer spring 6 is installed on the outside of the stop post 7. The top of the buffer spring 6 is fixedly installed on the bottom surface of the socket 8. When the tool handle 3 is placed on the surface of the socket 8, the worker squeezes the squeeze rod 20, causing the two sets of fixing rings 12 to be driven to move towards both ends of the expansion groove 21. By pressing the tool handle 3 into the slot 5, the bottom end of the socket 8 and the surface of the stop post 7 come into contact with each other. At this time, the squeeze rod 20 is released, and the L-shaped frame 16 is squeezed by the rebound force of the compression spring 18, squeezing the squeeze rod 20 out of the mounting groove 19, thereby driving the two sets of fixing rings 12 to clamp the tool handle 3.

[0040] If the locking block 17 does not enter the slot 11 opened on the outer arc surface of the tool holder 3, the worker can manually rotate the tool holder 3 to make the locking block 17 enter the tool holder 3, thus achieving the requirement of clamping the tool holder 3.

[0041] When the tool holder 3 needs to be replaced, squeeze the clamping rod 20 again and repeat the above operation to clamp and replace the tool holder 3.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tool holder fixture for a tool presetter, characterized by: It includes a tool setting device body (1), a conversion seat (2), a tool holder (3), and a clamping mechanism (4) for installing and replacing the tool holder (3). The conversion seat (2) is fixedly installed with the tool setting device body (1), and the tool holder (3) is inserted into the top of the conversion seat (2). The clamping mechanism (4) includes a retaining ring (12) and a pressing assembly for engaging and fixing the retaining ring (12) to the tool holder (3); The clamping mechanism (4) also includes a slot (5) and a buffer assembly for buffering when changing the tool holder (3).

2. The tool holder fixture for tool presetter according to claim 1, characterized in that: The fixing ring (12) is provided in two sets, and the opposite sidewalls of the two sets of fixing rings (12) are provided with locking blocks (17), and the locking blocks (17) are respectively engaged with the locking grooves (11) opened on the outer arc surface of the knife handle (3); The extrusion components are respectively positioned above the two sets of fixing rings (12).

3. The tool holder fixture for tool presetter according to claim 2, characterized in that: The extrusion assembly includes an extrusion rod (20), a fixing strip (13), and a transmission module for connecting the fixing strip (13) and the extrusion rod (20). The slot (5) has symmetrically arranged mounting slots (19) on both sides above the expansion slot (21). The end of the extrusion rod (20) passes through the side wall of the conversion seat (2) and is fixedly installed with the L-shaped frame (16) arranged inside the mounting slot (19). The fixing strip (13) is respectively arranged on the opposite outer side wall of the two sets of fixing rings (12). The transmission module is arranged between the L-shaped frame (16) and the fixing strip (13).

4. The tool holder fixture for tool presetter according to claim 3, characterized in that: The transmission module includes teeth (14) and gears (15). The teeth (14) are respectively disposed on the opposite side walls of the L-shaped frame (16) and the fixing bar (13). The expansion groove (21) below the mounting groove (19) is also provided with a sliding groove (10) that communicates with the outside of the conversion seat (2). The gears (15) are rotatably disposed between the fixing bar (13) and the L-shaped frame (16). The teeth (14) on the opposite side walls of the fixing bar (13) and the L-shaped frame (16) are respectively meshed with the gears (15).

5. The tool holder fixture for tool presetter according to claim 4, characterized in that: The two sets of L-shaped frames (16) are fixedly installed between their adjacent side walls and the inner wall of the mounting groove (19) by compression springs (18).

6. The tool holder fixture for tool presetter according to claim 1, wherein: The buffer assembly includes a buffer spring (6) and a socket (8). The bottom end of the buffer spring (6) is fixedly installed with the inner bottom surface of the slot (5), and the top end of the buffer spring (6) is fixedly installed with the bottom surface of the socket (8).

7. The tool holder fixture for a tool presetter according to claim 6, characterized in that: The inner bottom surface of the slot (5) is also provided with a stop post (7), which is located inside the buffer spring (6) and the top of the stop post (7) does not contact the bottom surface of the socket (8).

8. The tool holder fixture for tool presetter according to claim 7, characterized in that: The top surface of the socket (8) is also provided with a convex ball (9), which fits into the groove on the bottom surface of the handle (3).

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