Tool holder positioner for machine tools

Abstract

The application discloses a tool holder positioner for machine tools, and relates to the field of machine tool positioning. The tool holder positioner for machine tools comprises a base, a positioning groove formed in the base, a sliding seat arranged in the positioning groove and slidable along the axial direction of the positioning groove, a driving module for driving the sliding seat to slide, and a plurality of clamping petals arranged at intervals on the circumferential side of the sliding seat. The plurality of clamping petals can be relatively opened or folded in the sliding stroke of the sliding seat. The tool holder positioner can be locked and unlocked during the relative opening or folding of the plurality of clamping petals, so that the tool holder can be quickly disassembled and assembled. The tool holder can be used to mount a workpiece. When the workpiece is replaced, the machine tool does not need to be stopped, and the machining efficiency of the machine tool is greatly improved. Meanwhile, the tool holder can be positioned on the workbench of the machine tool through the cooperation of the base and the clamping petals, and the workpiece can be fixed in the tool holder through an adapter plate, so that the machining space of the tool is ensured, and the machining quality and machining efficiency of the workpiece are improved.

Description

Technical Field

[0001] This application relates to the field of machine tool positioning, and in particular to a tool holder positioner for machine tools. Background Technology

[0002] In existing technologies, when machining workpieces using machine tools, a large number of auxiliary fixtures are often required to fix the workpieces in place. When a new workpiece needs to be replaced after machining, the machine tool must be stopped, and the workpiece must be removed from the machine tool for replacement. This is not only time-consuming and labor-intensive, but also greatly reduces the machining efficiency of the machine tool. At the same time, a large number of auxiliary fixtures can interfere with the cutting tools, seriously affecting the machining process. Furthermore, when the cutting tools are severely worn due to long-term use, they need to be sent to a specialized cutting tool repair shop for repair or discarded, which is costly. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, this application provides a tool holder positioner for machine tools.

[0004] The tool holder positioner for machine tools provided in this application adopts the following technical solution: A tool holder positioner for a machine tool includes a base, a positioning groove formed on the base, a slide block slidably disposed in the positioning groove along the axial direction of the positioning groove, a drive module for driving the slide block to slide, and a plurality of clamping flaps spaced apart around the slide block, wherein the plurality of clamping flaps can open or close relative to each other during the sliding stroke of the slide block.

[0005] By adopting the above technical solution, the tool holder can lock and unlock during the relative opening or closing of multiple clamping petals, thereby enabling quick assembly and disassembly of the tool holder. Workpieces can be mounted on the tool holder, and the machine tool can be stopped when changing workpieces, greatly improving the machining efficiency of the machine tool. At the same time, the tool holder can be positioned on the machine tool's worktable through the cooperation of the base and clamping petals, and the workpiece can be fixed in the tool holder through the adapter plate, without the need for additional auxiliary tooling, effectively ensuring the machining space of the tool and improving the machining quality and efficiency of the workpiece. Furthermore, the separate arrangement of multiple clamping petals allows for easy assembly and disassembly with the positioning slots, reducing assembly difficulty.

[0006] Preferably, one end of the slide has a drive head, and the ends of the plurality of clamping flaps facing the drive head each have clamping portions, and a mating groove is formed between the plurality of clamping portions, the groove diameter of the mating groove gradually increasing along the direction from the clamping flap to the drive head.

[0007] By adopting the above technical solution, the drive head can gradually push multiple clamping parts outward as it approaches the clamping plate, thereby locking the tool holder with multiple clamping parts.

[0008] Preferably, the drive head includes a drive portion and a retaining portion arranged along a direction away from the clamping flap, the diameter of the drive portion gradually increases along the direction from the clamping flap to the retaining portion, and the diameter of the retaining portion is the same as the maximum diameter of the drive portion.

[0009] By adopting the above technical solution, the drive unit with gradually increasing diameter can move more smoothly in the mating groove and open up the multiple clamping parts; while the holding part can continuously press against the multiple clamping parts after the drive unit moves into place, keeping the multiple clamping parts in the open state, thereby improving the clamping effect of the multiple clamping parts on the tool holder.

[0010] Preferably, the positioning groove is provided with a mounting plate, the mounting plate has a mounting opening, the slide block passes through the mounting opening, and the multiple clamping flaps are spaced apart on the inner circumferential side of the mounting opening.

[0011] Preferably, a limiting groove is formed circumferentially on the inner wall of the mounting port, and the ends of the plurality of clamping flaps away from the driving head each have a snap-fit ​​part, and the plurality of snap-fit ​​parts are respectively inserted into the limiting groove and are in clearance fit with the limiting groove.

[0012] By adopting the above technical solution, multiple clamping flaps can be movably connected to the mounting plate through the limiting groove, which not only allows the multiple clamping flaps to open or close smoothly, but also makes it easy to assemble the clamping flaps with the positioning groove, thus reducing assembly difficulty.

[0013] Preferably, there is a gap between each pair of adjacent clamping flaps, and multiple limiting rods are arranged at intervals around the outer periphery of the slide block, with each limiting rod being fitted into each gap.

[0014] By adopting the above technical solution, two adjacent clamping flaps can maintain a distance through the limiting rod housed in the gap, thus preventing multiple clamping flaps from coming into contact with each other during the operation and affecting their clamping effect on the tool holder.

[0015] Preferably, the diameter of the limiting rod gradually increases along the direction from the clamping flap to the driving head.

[0016] By adopting the above technical solution, the limiting rod can open up the two adjacent clamping petals during the sliding of the slide block, further improving the clamping effect of multiple clamping petals on the tool holder.

[0017] Preferably, the outer periphery of the slide block is provided with a plurality of slots spaced apart around its circumference, and each slot is provided with an elastic element. The plurality of limiting rods are respectively housed in the plurality of slots, and each limiting rod abuts against the elastic element in the corresponding slot.

[0018] By adopting the above technical solution, different numbers of clamping flaps can be assembled in the positioning groove as needed, and the limiting rod that is not accommodated in the gap during assembly can be received in the slot under the compression of the clamping flaps.

[0019] Preferably, the base has a drive groove, and the drive module includes a piston that is slidably disposed in the drive groove. The piston is connected to the slide block and the two slide in the same direction. The drive groove has air inlets at both ends in the sliding direction of the piston.

[0020] Preferably, the positioning groove has a bearing surface on its periphery, a first detection hole is formed on the bearing surface, and a detection channel communicating with the first detection hole is also formed in the base, and a second detection hole is formed at the end of the detection channel away from the first detection hole.

[0021] In summary, the present invention has at least one of the following beneficial technical effects: 1. The tool holder can lock and unlock during the relative opening or closing of multiple clamping plates, thus enabling quick assembly and disassembly of the tool holder. Workpieces can be mounted on the tool holder, and the machine tool can be stopped when changing workpieces, which greatly improves the processing efficiency of the machine tool. 2. At the same time, the tool holder can be positioned on the machine tool's worktable through the cooperation of the base and the clamping plate, and the workpiece can be fixed in the tool holder through the adapter plate. There is no need to add other auxiliary tooling, which effectively ensures the machining space of the tool and prevents the tool from interfering with the auxiliary tooling. Furthermore, due to the large machining space, the tool can machine more surfaces of the workpiece, making it suitable for more machining occasions, and the machining quality and precision are both high. 3. When the workpiece is worn, the worn tool can be directly inserted and fixed in the tool holder, and the worn tool can be re-sharpened by the tool on the spindle. This can not only improve the machining accuracy of the tool, but also extend the tool's service life. 4. The separate design of multiple clamping flaps facilitates relative assembly and disassembly with the positioning slot, reducing assembly difficulty; 6. The tool holder can be quickly locked and unlocked by controlling the air supply port. No calibration is required when locking, which improves work efficiency. 7. The positioner can work with the robot on the machine tool to achieve automatic tool holder changing, with a high degree of automation. Attached Figure Description

[0022] Figure 1 This is a front view of the tool holder positioner in the embodiments of this application; Figure 2 This is a schematic axial cross-section of the tool holder positioner in the embodiments of this application. Figure 1 ; Figure 3 yes Figure 1 Schematic diagram of section AA in the diagram; Figure 4 This is a schematic axial cross-section of the tool holder positioner in the embodiments of this application. Figure 2 .

[0023] Marked in the attached diagram: 1. Base; 2. Positioning groove; 3. Slide; 31. Drive head; 311. Drive unit; 312. Holding unit; 32. Snap-fit ​​connector; 4. Drive module; 5. Clamping flap; 51. Clamping part; 52. Mating groove; 53. Snap-fit ​​part; 6. Mounting plate; 7. Mounting port; 8. Limiting groove; 9. Gap; 10. Limiting rod; 11. Snap-fit ​​groove; 12. Elastic element; 13. Drive groove; 14. Air inlet; 15. Bearing surface; 16. First detection hole; 17. Detection channel; 18. Second detection hole; 19. Gas channel; 20. Spring; 100. Knife handle. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] See Figure 1-4 As shown, a tool holder positioner for a machine tool includes a base 1, a positioning groove 2 vertically formed on the upper part of the base 1, a slide 3 slidably disposed in the positioning groove 2 along the axial direction of the positioning groove 2, a drive module 4 for driving the slide 3 to slide, and six clamping flaps 5 spaced apart around the slide 3. The positioning groove 2 is used to mount a tool holder 100, which is the handle part of a cutting tool. It can not only fix the workpiece via an adapter plate but also directly connect to the cutting tool. The cross-section of the positioning groove 2 is triangular-circular, and the outer contour of the tool holder 100 matches the positioning groove 2, thus preventing relative rotation between the tool holder 100 and the positioning groove 2. The six clamping flaps 5 have a certain deformation capacity, allowing them to open or close relative to each other during the sliding stroke of the slide 3.

[0027] Specifically, in combination Figure 2 and Figure 4As shown, the upper end of the slide block 3 has a drive head 31, and the upper ends of the six clamping petals 5 each have a clamping part 51. A mating groove 52 is formed between the six clamping parts 51, and the groove diameter of the mating groove 52 gradually increases along the direction from the clamping petals 5 to the drive head 31.

[0028] When assembling the tool holder 100, simply insert the upper end of the tool holder 100 into the positioning groove 2. The lower end of the tool holder 100 has an assembly port. When inserted, the assembly port covers the outer periphery of the slide block 3 and the clamping flap 5. Then, the drive module 4 drives the slide block 3 to slide downward. During its sliding process, the drive head 31 can squeeze the six clamping parts 51 outward. After being pressed, the six clamping parts 51 open relative to each other and press against the inner wall of the assembly port, thereby locking the tool holder 100. When disassembling the tool holder 100, the drive module 4 drives the slide block 3 to slide upward. The drive head 31 disengages from the clamping parts 51. After the six clamping parts 51 lose the squeezing force, they close relative to each other. At this time, the tool holder 100 is unlocked and can be easily removed from the positioning groove 2. In this way, the tool holder 100 can lock and unlock during the relative opening or closing of the six clamping petals 5, thereby enabling quick assembly and disassembly of the tool holder 100. Workpieces can be mounted on the tool holder 100, and the machine tool can be stopped when changing workpieces, which greatly improves the processing efficiency of the machine tool. At the same time, the tool holder 100 can be positioned on the machine tool's worktable through the cooperation of the base 1 and the clamping petals 5. The workpiece can be fixed in the tool holder 100 through the adapter plate, without the need for additional auxiliary tooling, effectively ensuring the machining space of the tool and improving the machining quality and efficiency of the workpiece. Furthermore, the six clamping petals 5, which are set separately, can be easily assembled and disassembled with the positioning groove 2, making assembly difficult.

[0029] Among them, the clamping part 51 has an arc-shaped protrusion on the outside, and the inner wall of the assembly port has a groove around the slide 3. When the six clamping parts 51 are opened relative to each other, the six protrusions press against the groove and lock the tool holder 100.

[0030] In this embodiment, the drive head 31 includes a drive portion 311 and a retaining portion 312 arranged along a direction away from the clamping flap 5. The diameter of the drive portion 311 gradually increases along the direction from the clamping flap 5 to the retaining portion 312, and the diameter of the retaining portion 312 is the same as the maximum diameter of the drive portion 311. The gradually increasing diameter of the drive portion 311 allows it to move more smoothly in the mating groove 52 and open the six clamping portions 51. The retaining portion 312 can continuously abut against the multiple clamping portions 51 after the drive portion 311 has moved into place, keeping the multiple clamping portions 51 in the open state and improving the clamping effect of the multiple clamping portions 51 on the tool holder 100.

[0031] In this embodiment, a mounting plate 6 is provided in the positioning groove 2, and a mounting opening 7 is provided on the mounting plate 6. The slide 3 passes through the mounting opening 7 and has a snap connector 32 at its lower end for abutting the mounting plate 6. Six clamping petals 5 are spaced apart on the inner circumferential side of the mounting opening 7.

[0032] A limiting groove 8 is circumferentially formed on the inner wall of the mounting port 7. Each of the six clamping flaps 5 has a locking part 53 at its end furthest from the drive head 31. The six locking parts 53 are respectively inserted into the limiting groove 8 and are clearance-fitted with it. The six clamping flaps 5 can be movably connected to the mounting plate 6 through the limiting groove 8, allowing the six clamping flaps 5 to open or close smoothly. Furthermore, the clamping flaps 5 can be easily assembled with the positioning groove 2, reducing assembly difficulty.

[0033] In this embodiment, as Figure 2-3 As shown, there is a gap 9 between each pair of adjacent clamping petals 5. Multiple limiting rods 10 are arranged circumferentially around the outer periphery of the slide block 3, and each limiting rod 10 is fitted into each gap 9. The two adjacent clamping petals 5 can maintain a distance through the limiting rods 10 housed in the gaps 9, preventing the six clamping petals 5 from abutting against each other during the movement and affecting their clamping effect on the tool holder 100.

[0034] The diameter of the limiting rod 10 gradually increases along the direction from the clamping petals 5 to the drive head 31. In this way, as the slide block 3 slides downward, the gradually increasing diameter of the limiting rod 10 can gradually open up the two adjacent clamping petals 5, further improving the clamping effect of the six clamping petals 5 on the tool holder 100.

[0035] In this embodiment, the outer periphery of the slide block 3 is provided with multiple slots 11 spaced apart around its circumference. Each slot 11 is provided with an elastic element 12, and multiple limiting rods 10 are respectively housed in the multiple slots 11, with each limiting rod 10 abutting against the elastic element 12 in the corresponding slot 11. The specific number of slots 11 and limiting rods 10 can be flexibly set as needed, and the elastic element 12 can be a spring or a sheet, etc.

[0036] In other words, workers can flexibly assemble different numbers of clamping petals 5 according to specific processing needs. In some other embodiments, the number of clamping petals 5 can also be three, four, five or more. When different numbers of clamping petals 5 are applied, the limiting rod 10 corresponding to the gap 9 extends out and is embedded in the gap 9 under the action of the elastic member 12. The limiting rod 10 not contained in the corresponding gap 9 can be contained in the slot 11 under the compression of the clamping petals 5, which will not affect the opening and closing of the clamping petals 5.

[0037] In this embodiment, as Figure 2 and Figure 4As shown, a drive groove 13 is provided at the lower part of the base 1. The drive groove 13 is connected to the positioning groove 2. The drive module 4 includes a piston that is slidably disposed in the drive groove 13. The piston is coaxially connected to the snap connector 32 and its sliding direction is the same as the sliding direction of the slide block 3. The drive groove 13 has air inlets 14 at both ends of the piston sliding direction.

[0038] Combination Figure 2 As shown, the air inlet 14 at the top of the drive groove 13 is connected to the L-shaped gas channel 19. The other end of the gas channel 19 is located on the outer wall of the base 1. When it is necessary to clamp the tool handle 100, compressed air is simply input into the drive groove 13 from the gas channel 19. The piston descends under the action of the compressed air and drives the slide block 3 to slide downward, thereby opening the six clamping flaps 5 and clamping the tool handle 100. Eight springs 20 are also arranged around the upper part of the piston, and these eight springs 20 are all connected to the groove wall of the drive groove 13. These eight springs 20 can use their own elasticity to squeeze the piston, thereby cooperating with the gas channel 19 to clamp the tool handle 100, further improving the clamping effect of the tool handle 100.

[0039] The air inlet 14 at the bottom of the drive groove 13 is the groove opening of the drive groove 13. In this example, the positioner needs to be installed on the machine tool workbench. When installed, the groove opening of the drive groove 13 faces downward. There is an air hole on the workbench, which is connected to an external air source. It can output compressed air to the groove opening of the drive groove 13 to drive the piston to slide upward, thereby unlocking the tool holder 100.

[0040] In this embodiment, combined with Figure 4 As shown, the positioning groove 2 has a bearing surface 15 on its periphery, and a first detection hole 16 is provided on the bearing surface 15. The base 1 also has a detection channel 17 communicating with the first detection hole 16. The end of the detection channel 17 away from the first detection hole 16 has a second detection hole 18. After the tool handle 100 is inserted into the positioning groove 2, if the tool handle 100 is clamped, its periphery can press against the bearing surface 15 and block the first detection hole 16. If the tool handle 100 is not clamped, there will inevitably be a gap between it and the bearing surface 15, and the periphery of the tool handle 100 cannot completely block the first detection hole 16. Therefore, by connecting a gas flow sensor to the second detection hole 18, the clamping state of the tool handle 100 can be effectively detected and adjusted by the gas flow in the detection channel 17, preventing the tool handle 100 from being affected by insecure fixing.

[0041] Specifically, if the gas flow sensor outputs a large flow signal, it indicates that the first detection hole 16 is not blocked, that is, the tool holder 100 is not effectively clamped; if the gas flow sensor outputs a small flow signal or no flow signal, it indicates that the first detection hole 16 has been blocked by the tool holder 100, and the tool holder 100 has been effectively clamped.

[0042] The implementation principle of the tool holder positioner for machine tools in this embodiment is as follows: When assembling the tool holder 100, the tool holder 100 is inserted into the positioning groove 2 from the upper end slot of the positioning groove 2. Then, the drive module 4 drives the slide 3 to slide downward. During its sliding, the drive head 31 can squeeze the six clamping parts 51 outward. After being pressed, the six clamping parts 51 open relative to each other and press against the tool holder 100. When disassembling the tool holder 100, the drive module 4 drives the slide 3 to slide upward. The drive head 31 disengages from the clamping parts 51. After the six clamping parts 51 lose the squeezing force, they close relative to each other. At this time, the tool holder 100 is unlocked.

[0043] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A tool holder positioner for machine tools, characterized in that: Includes a base (1), a positioning groove (2) opened on the base (1), a slide block (3) slidably disposed in the positioning groove (2) along the axial direction of the positioning groove (2), a drive module (4) for driving the slide block (3) to slide, and a plurality of clamping flaps (5) spaced apart on the periphery of the slide block (3), wherein the plurality of clamping flaps (5) can open or close relative to each other during the sliding stroke of the slide block (3); The slide (3) has a drive head (31) at one end, and the plurality of clamping petals (5) have clamping parts (51) at the end facing the drive head (31). The plurality of clamping parts (51) form a mating groove (52) between them. The groove diameter of the mating groove (52) gradually increases along the direction from the clamping petal (5) to the drive head (31). There is a gap (9) between each pair of adjacent clamping petals (5), and multiple limiting rods (10) are arranged around the outer periphery of the slide (3) at intervals, and each of the gaps (9) is fitted with a limiting rod (10). The outer periphery of the slide block (3) is provided with a plurality of slots (11) spaced apart around its circumference. Each slot (11) is provided with an elastic element (12). The plurality of limiting rods (10) are respectively housed in the plurality of slots (11), and each limiting rod (10) abuts against the elastic element (12) in the corresponding slot (11).

2. The tool holder positioner for machine tools according to claim 1, characterized in that: The drive head (31) includes a drive portion (311) and a holding portion (312) arranged in a direction away from the clamping flap (5). The diameter of the drive portion (311) gradually increases along the direction from the clamping flap (5) to the holding portion (312), and the diameter of the holding portion (312) is the same as the maximum diameter of the drive portion (311).

3. A tool holder positioner for machine tools according to claim 1, characterized in that: The positioning groove (2) is provided with an installation plate (6), the installation plate (6) is provided with an installation port (7), the slide (3) passes through the installation port (7), and the multiple clamping petals (5) are spaced apart on the inner circumferential side of the installation port (7).

4. A tool holder positioner for machine tools according to claim 3, characterized in that: A limiting groove (8) is provided circumferentially on the inner wall of the mounting port (7). Each of the multiple clamping petals (5) has a snap-fit ​​part (53) at the end away from the driving head (31). The multiple snap-fit ​​parts (53) are respectively inserted into the limiting groove (8) and are in clearance fit with the limiting groove (8).

5. A tool holder positioner for machine tools according to claim 1, characterized in that: The diameter of the limiting rod (10) gradually increases along the direction from the clamping flap (5) to the driving head (31).

6. A tool holder positioner for machine tools according to claim 1, characterized in that: The base (1) has a drive groove (13), and the drive module (4) includes a piston that is slidably disposed in the drive groove (13). The piston is connected to the slide block (3) and the two slide in the same direction. The drive groove (13) has an air outlet (14) at both ends of the piston sliding direction.

7. A tool holder positioner for machine tools according to claim 1, characterized in that: The positioning groove (2) has a bearing surface (15) on its periphery. A first detection hole (16) is provided on the bearing surface (15). A detection channel (17) communicating with the first detection hole (16) is also provided in the base (1). A second detection hole (18) is provided at one end of the detection channel (17) away from the first detection hole (16).

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