Quick-change type cutter handle detection main shaft

Abstract

The invention discloses a quick-change type cutter handle detection main shaft, and relates to the field of machine tool part design, the quick-change type cutter handle detection main shaft comprises a rotating main shaft, the outer side of the rotating main shaft is rotatably and cooperatively provided with a shell, the left end of the rotating main shaft is fixedly provided with a rotating cylinder, and the rotating cylinder is internally in driving connection with a movable rod; a conversion groove is formed in the right end of the rotating main shaft, a receding groove position is formed between the conversion groove and the movable hole, and a conversion sleeve is detachably installed in the conversion groove. A pull rod is detachably mounted at the right end of the movable rod; the right end of the pull rod is inserted into the conversion sleeve in a clearance fit manner; the rotary air cylinder is used for driving the movable rod to move left and right, when the movable rod moves leftwards, a glass bead in a round hole in the right end of the movable rod can abut against a trapezoidal convex edge at the left end of the pull rod, the technical effect of pulling the pull rod leftwards is achieved, the right end of the pull rod is connected with the knife handle through the pull switch, and the knife handle stably abuts against the interior of the conversion sleeve for assembly; and the conversion sleeve is detachably assembled in the conversion groove, so that the conversion sleeve cannot automatically fall and be damaged after the knife handle is disassembled.

Description

Technical Field

[0001] This invention relates to the field of machine tool component design, and in particular to a quick-change tool holder detection spindle. Background Technology

[0002] High-speed cutting is mainly used in rotary cutting tools, requiring high spindle speeds. When the spindle speed exceeds 10,000 r / min, the large end of the taper hole of the traditional 7:24 spindle adapted to the BT tool system will expand, causing axial movement of the tool and potentially resulting in the spindle seizing the taper shank. Therefore, the machining performance of the traditional BT tool system can hardly meet the requirements of high-speed cutting.

[0003] Currently, the most widely used high-speed cutting tools include the German Hohl Shaft Kegel (HSK) tool system, the American KM tool system, and the Japanese NC5 and BIG-PLUS tool systems. All of these are double-sided restraint tool holders.

[0004] The prior art (Announcement No.: CN218800733U, Announcement Date: 2023.04.07) discloses a self-locking force-enhancing pulley for use in high-speed spindle HSK tool systems. It designs a self-locking force-enhancing pulley, which achieves dynamic balance and self-locking effect at high speeds through a combination of a six-lobed pulley and a ring spring, combined with a U-shaped oil seal and a wave spring ring. This reduces the number of disc springs and the length of the pulley bar, and improves the compactness and stability of the spindle.

[0005] In the above solution, the puller bar pulls the connecting shaft of the puller claw to drive the puller claw to retract inward and clamp the HSK tool holder. A tool holder connecting seat with a matching diameter is provided between the puller claw and the HSK tool holder. When it is necessary to use a tool holder with a different diameter, the tool holder connecting seat of the appropriate size needs to be replaced. However, there is no other fixing structure at the tool holder connecting seat, which is easy to fall and be damaged when disassembling the tool holder. In addition, other solutions in the prior art generally use a threaded locking method to lock the tool holder on the tool holder connecting seat. This installation method has the technical problem of being time-consuming and labor-intensive. Summary of the Invention

[0006] To overcome the shortcomings mentioned above, the present invention provides a technical solution that can solve the above problems.

[0007] A quick-change tool holder detection spindle includes a rotating spindle, on the outer side of which a housing is rotatably mounted. A rotary cylinder is fixedly mounted on the left end of the rotating spindle. A movable rod is connected inside the rotary cylinder and driven by the cylinder. A movable hole is formed at the axis of the rotating spindle, and the movable rod is fitted into the movable hole with clearance fit. The right end of the rotating spindle is formed with a conversion groove, and a clearance groove is formed between the conversion groove and the movable hole. A conversion sleeve can be detachably installed in the conversion groove. The right end of the movable rod is detachably fitted with a pull rod, and the right end of the pull rod is inserted into the conversion sleeve with a clearance fit.

[0008] As a further aspect of the present invention: the end of the movable rod near the conversion sleeve is formed with an assembly groove, the outer side of the left end of the pull rod is formed with a trapezoidal protrusion, the trapezoidal protrusion is inserted into the assembly groove with a clearance fit, the outer side of the right end of the movable rod is formed with a plurality of round holes, the inner side of the round holes is connected to the assembly groove, and glass beads are installed in the round holes with a clearance fit. When the movable rod moves to the left, the glass beads are pressed against the trapezoidal protrusion, and when the movable rod moves to the right, the glass beads are in the clearance groove with a clearance fit.

[0009] As a further aspect of the present invention: a limiting ring is formed on the outer side of the pull rod, and the limiting ring blocks the glass beads inside the clearance groove.

[0010] As a further aspect of the present invention: a hydraulic cylinder adapter flange is fixedly installed between the left end of the rotating spindle and the rotary cylinder.

[0011] As a further aspect of the present invention: a pulley is fixedly installed on the outer side of the rotating main shaft, and the pulley is located between the hydraulic cylinder adapter flange and the machine housing.

[0012] As a further embodiment of the present invention: at least two L-shaped buckles are formed on the outer side of the right end of the conversion sleeve, and at least two buckles are fixedly installed on the right end face of the rotating spindle. When the conversion sleeve is pressed and rotated, the buckles are inserted into the L-shaped buckles in a corresponding gap fit.

[0013] As a further aspect of the present invention: a spring is installed between the right end of the rotating main shaft and the conversion sleeve.

[0014] As a further aspect of the present invention: a plurality of positioning steel balls are movably fitted between the conversion sleeve and the conversion groove, and the plurality of positioning steel balls are arranged in a circular array with each other.

[0015] As a further aspect of the present invention: both the movable rod and the pull rod have pin through holes formed at their axial centers, and a detection pin is fitted into the pin through hole with clearance, the right end of the detection pin extending into the conversion sleeve.

[0016] As a further aspect of the present invention: a stepped groove is formed in the movable hole, and a stepped position is formed on the outer wall of the right end of the movable rod. The stepped groove limits the travel distance of the movable rod to the right through the stepped position.

[0017] As a further aspect of the present invention, a rolling bearing is fitted between the outer side of the rotating spindle and the housing.

[0018] As a further aspect of the present invention: several rolling bearings are provided, and a bearing limiting groove is formed on the outer wall of the rotating main shaft, and the inner ring of the rolling bearing is fitted and installed in the bearing limiting groove.

[0019] As a further embodiment of the present invention: at least two bearing clamping nuts are fitted on the outer side of the rotating spindle, the bearing clamping nuts press against the inner ring of the rolling bearing, and the outer ring of the rolling bearing is fitted on the left and right ends inside the housing.

[0020] As a further aspect of the present invention: a spacer is fitted between the left rolling bearing and the left bearing clamping nut, the spacer is sleeved on the rotating main shaft, and the spacer is set to abut against the inner ring of the rolling bearing.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. The main spindle rotates at high speed inside the housing. The rotary cylinder is used to drive the movable rod to move left and right. When the movable rod moves to the left, the glass ball in the round hole at its right end will press against the trapezoidal protrusion at the left end of the pull rod, thus achieving the technical effect of pulling the pull rod to the left. The right end of the pull rod is connected to the tool holder through the pull brake, so that the tool holder is stably pressed against the conversion sleeve for assembly, which meets the clamping stability during high-speed operation. 2. The conversion sleeve is detachably assembled in the conversion slot. After the tool holder is removed, the conversion sleeve will not fall and break on its own. At the same time, the detachable structure makes it easy to replace the conversion sleeve with the appropriate size for use, which in turn makes it easy to replace tool holders of different diameters. 3. After the tool holder is installed, the installation depth of the tool holder can be tested using the detection pin, thereby ensuring the stability of the tool holder assembly.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A schematic diagram of a half-section structure; Figure 3 This is a schematic diagram of the installation structure of the L-shaped fastener and the snap fastener; Figure 4 This is a schematic diagram of the installation structure of the rotary cylinder, movable rod, and tie rod; Figure 5 This is a schematic diagram of the installation structure of the movable rod and the tie rod; Figure 6 This is a schematic diagram of the cross-sectional structure after the rotary cylinder is hidden. Figure 7 This is a half-section diagram of the structure in which the movable rod and the tie rod are installed inside the rotating main shaft; Figure 8 This is a schematic diagram of the structure of the present invention when using the first type of knife handle; Figure 9 yes Figure 8 A schematic diagram of the cross-sectional structure; Figure 10 This is a schematic diagram of the structure of the present invention when using the second type of knife handle; Figure 11 yes Figure 10 A schematic diagram of the cross-sectional structure.

[0025] The diagram shows: 1. Rotating spindle; 2. Machine housing; 3. Rotary cylinder; 4. Movable rod; 5. Movable hole; 6. Conversion groove; 7. Clearance groove; 8. Conversion sleeve; 9. Tie rod; 10. Assembly groove; 11. Trapezoidal protrusion; 12. Round hole; 13. Glass ball; 14. Limiting ring; 15. Hydraulic cylinder adapter flange; 16. Pulley; 17. L-shaped snap; 18. Snap fastener; 19. Spring; 20. Positioning steel ball; 21. Ejector pin through hole; 22. Stepped groove; 23. Stepped position; 24. Rolling bearing; 25. Bearing limiting groove; 26. Bearing clamping nut; 27. Spacer; 28. Tool holder. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0028] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] like Figure 1-11 As shown, the quick-change tool holder detection spindle of the present invention includes a rotating spindle 1, a housing 2 is rotatably mounted on the outer side of the rotating spindle 1, a rotary cylinder 3 is fixedly mounted on the left end of the rotating spindle 1, a movable rod 4 is driven and connected inside the rotary cylinder 3, a movable hole 5 is formed at the axis of the rotating spindle 1, and the movable rod 4 is fitted into the movable hole 5 with clearance fit. The right end of the rotating spindle 1 is formed with a conversion groove 6, and a clearance groove 7 is formed between the conversion groove 6 and the movable hole 5. A conversion sleeve 8 is detachably installed in the conversion groove 6. A pull rod 9 is detachably installed on the right end of the movable rod 4, and the right end of the pull rod 9 is inserted into the conversion sleeve 8 with a clearance fit. The movable rod 4 has an assembly groove 10 formed at one end near the conversion sleeve 8. The outer side of the left end of the pull rod 9 has a trapezoidal protrusion 11, which is inserted into the assembly groove 10 with a clearance fit. The outer side of the right end of the movable rod 4 has several round holes 12, which are connected to the assembly groove 10. Glass beads 13 are installed in the round holes 12 with a clearance fit. When the movable rod 4 moves to the left, the glass beads 13 press against the trapezoidal protrusion 11. When the movable rod 4 moves to the right, the glass beads 13 are in the clearance slot 7 with a clearance fit. The principle is as follows: the rotating spindle 1 rotates at high speed inside the housing 2, and the rotary cylinder 3 drives the movable rod 4 to move left and right. When the movable rod 4 moves to the left, the glass ball 13 in the round hole 12 at its right end will press against the trapezoidal protrusion 11 at the left end of the pull rod 9, thus achieving the technical effect of pulling the pull rod 9 to the left. The right end of the pull rod 9 is connected to the tool holder 28 through the pull brake, so that the tool holder 28 is stably pressed against the conversion sleeve 8 for assembly, which meets the clamping stability during high-speed operation. The conversion sleeve 8 can be detachably assembled in the conversion slot 6. After the tool holder 28 is removed, the conversion sleeve 8 will not fall and break on its own. At the same time, the detachable structure makes it convenient to replace the conversion sleeve 8 of the appropriate size for use, and thus facilitates the replacement of tool holders 28 of different diameters.

[0032] As a further aspect of the present invention: a limiting ring 14 is formed on the outer side of the pull rod 9; this can effectively limit the stroke of the pull rod 9 to move left and right, and ensure the stability of the tool holder 28 after assembly.

[0033] As a further aspect of the present invention: a hydraulic cylinder adapter flange 15 is fixedly installed between the left end of the rotating spindle 1 and the rotary cylinder 3; this ensures the stable assembly of the rotary cylinder 3.

[0034] As a further aspect of the present invention: a pulley 16 is fixedly installed on the outer side of the rotating main shaft 1, and the pulley 16 is located between the hydraulic cylinder adapter flange 15 and the housing 2; the rotating main shaft 1 can be controlled to perform stable and high-speed rotational motion through the pulley 16.

[0035] As a further aspect of the present invention: at least two L-shaped latches 17 are formed on the outer side of the right end of the conversion sleeve 8, and at least two buckles 18 are fixedly installed on the right end face of the rotating spindle 1. When the conversion sleeve 8 is pressed and rotated, the buckles 18 are inserted into the L-shaped latches 17 in a corresponding gap fit. The conversion sleeve 8 can be quickly installed and disassembled by pressing and twisting, which makes it convenient to replace conversion sleeves 8 of different diameters to match tool holders 28 of different diameters.

[0036] As a further aspect of the present invention: a spring 19 is installed between the right end of the rotating spindle 1 and the conversion sleeve 8; the spring 19 can be used to ensure the stability of the buckle 18 after it is engaged in the L-shaped buckle 17, so that even when cutting the workpiece at high speed, there will be no loosening. The appropriate spring 19 with suitable elasticity can be selected according to the actual situation to realize the quick installation and disassembly of the conversion sleeve 8.

[0037] As a further aspect of the present invention: a plurality of positioning steel balls 20 are movably fitted between the conversion sleeve 8 and the conversion groove 6, and the plurality of positioning steel balls 20 are arranged in a circular array with each other; when the conversion sleeve 8 is pressed and twisted, the conversion sleeve 8 can rotate in the conversion groove 6 through the positioning steel balls 20, thereby achieving the technical effect of quick installation and disassembly.

[0038] As a further aspect of the present invention: both the movable rod 4 and the pull rod 9 have pin through holes 21 formed at their axial centers, and a detection pin is fitted into the pin through hole 21 with clearance fit. The right end of the detection pin extends into the conversion sleeve 8. The detection pin can be used to test the installation depth of the tool holder 28, thereby ensuring the stability of the tool holder 28 assembly.

[0039] As a further aspect of the present invention: a stepped groove 22 is formed in the movable hole 5, and a stepped position 23 is formed on the outer wall of the right end of the movable rod 4. The stepped groove 22 restricts the travel distance of the movable rod 4 to the right through the stepped position 23; it can limit the travel distance of the movable rod 4 to the left and right, thereby facilitating the quick locking or unlocking of the pull rod 9.

[0040] As a further aspect of the present invention: a rolling bearing 24 is fitted between the outer side of the rotating spindle 1 and the housing 2; making the installation of the rotating spindle 1 within the housing 2 more stable.

[0041] As a further aspect of the present invention: several rolling bearings 24 are provided, and a bearing limiting groove 25 is formed on the outer wall of the rotating main shaft 1, and the inner ring of the rolling bearing 24 is fitted and installed in the bearing limiting groove 25; so that the installation and positioning of the rolling bearing 24 is more accurate.

[0042] As a further embodiment of the present invention: at least two bearing clamping nuts 26 are installed on the outer side of the rotating spindle 1, the bearing clamping nuts 26 press against the inner ring of the rolling bearing 24, and the outer ring of the rolling bearing 24 is installed at the left and right ends inside the housing 2; quick assembly can be achieved through the bearing clamping nuts 26, and the rolling bearing 24 can also be disassembled and replaced when it is damaged.

[0043] As a further aspect of the present invention: a spacer 27 is fitted between the left rolling bearing 24 and the left bearing clamping nut 26. The spacer 27 is sleeved on the rotating main shaft 1 and abuts against the inner ring of the rolling bearing 24; this ensures the stable assembly of the rolling bearing 24.

[0044] This embodiment does not impose any limitation on the shape, material, structure, etc. of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A quick-change tool holder detection spindle, including a rotating spindle, characterized in that: The outer side of the rotating main shaft is rotatably fitted with a housing, and a rotary cylinder is fixedly installed at the left end of the rotating main shaft. A movable rod is connected inside the rotary cylinder and a movable hole is formed at the axis of the rotating main shaft. The movable rod is fitted into the movable hole with clearance fit. The right end of the rotating spindle is formed with a conversion groove, and a clearance groove is formed between the conversion groove and the movable hole. A conversion sleeve can be detachably installed in the conversion groove. A pull rod is detachably installed at the right end of the movable rod, and the right end of the pull rod is inserted into the conversion sleeve with clearance fit. The movable rod has an assembly groove formed at one end near the conversion sleeve. A trapezoidal protrusion is formed on the outer side of the left end of the pull rod. The trapezoidal protrusion is inserted into the assembly groove with a clearance fit. Several round holes are formed on the outer side of the right end of the movable rod. The inner side of the round holes is connected to the assembly groove. Glass beads are installed in the round holes with a clearance fit. When the movable rod moves to the left, the glass beads are pressed against the trapezoidal protrusion. When the movable rod moves to the right, the glass beads are in the clearance slot with a clearance fit.

2. The quick-change tool holder detection spindle according to claim 1, characterized in that: The outer side of the pull rod is formed with a limiting ring, which blocks the glass beads inside the clearance groove.

3. The quick-change tool holder detection spindle according to claim 1, characterized in that: A hydraulic cylinder adapter flange is fixedly installed between the left end of the rotating spindle and the rotary cylinder.

4. The quick-change tool holder detection spindle according to claim 3, characterized in that: A pulley is fixedly installed on the outer side of the rotating main shaft, and the pulley is located between the hydraulic cylinder adapter flange and the machine housing.

5. The quick-change tool holder detection spindle according to claim 1, characterized in that: The outer side of the right end of the conversion sleeve is formed with at least two L-shaped buckles, and at least two buckles are fixedly installed on the right end face of the rotating spindle. When the conversion sleeve is pressed and rotated, the buckles are inserted into the L-shaped buckles in a corresponding gap fit.

6. The quick-change tool holder detection spindle according to claim 5, characterized in that: A spring is installed between the right end of the rotating main shaft and the conversion sleeve.

7. The quick-change tool holder detection spindle according to claim 6, characterized in that: A number of positioning steel balls are movably fitted between the conversion sleeve and the conversion groove, and the positioning steel balls are arranged in a circular array with each other.

8. The quick-change tool holder detection spindle according to claim 1, characterized in that: Both the movable rod and the pull rod have pin through holes formed at their cores. A detection pin is installed in the pin through hole with clearance fitting, and the right end of the detection pin extends into the conversion sleeve.

9. The quick-change tool holder detection spindle according to claim 1, characterized in that: A stepped groove is formed inside the movable hole, and a stepped position is formed on the outer wall of the right end of the movable rod. The stepped groove and the stepped position limit the travel distance of the movable rod to the right.

10. The quick-change tool holder detection spindle according to claim 1, characterized in that: A rolling bearing is fitted between the outer side of the rotating spindle and the housing.

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