Quick-change numerical control machining tool holder changing device

Abstract

The utility model discloses quick change type numerical control processing tool shank tool changing device, including base and latin assembly device, and the top of latin assembly device is equipped with quick change chuck, and the inner wall of quick change chuck is equipped with a plurality of positioning clamping blocks, and the top of quick change chuck is clamped with tool shank, and the other end of tool shank is the threaded end, and the threaded end is connected with tool locking nut, and tool locking nut is provided with the clamping tool mouth. The utility model discloses quick change type numerical control processing tool shank tool changing device, solved the problem of different tool changing device that different tools need to be equipped when replacing tool in the prior art.

Description

Technical Field

[0001] This utility model belongs to the technical field of CNC machining devices, specifically relating to a quick-change CNC machining tool holder changer. Background Technology

[0002] In the context of the ongoing transformation of the CNC machining industry towards more efficient and flexible production, the spring collet tool holder, as a core component connecting the machine tool spindle and the cutting tool, directly affects the operational rhythm and production efficiency of the entire production line due to its ease of disassembly and replacement. However, the spring collet tool holder disassembly and replacement devices widely used in the industry at present generally suffer from a significant problem of poor versatility. The mainstream traditional tool changers on the market are not developed based on a design concept of compatibility with multiple tool holder specifications. Instead, they are mostly specially designed for specific models and parameters of tool holders. Examples include the HSK63 tool holder commonly used in medium- and high-speed precision machining, the HSK100 tool holder adapted for high-torque heavy-duty cutting operations, the BT50 tool holder widely used in small and medium-power machine tools, and the BT50 tool holder mainly used with high-power heavy-duty cutting equipment. Each specification of tool holder requires a dedicated tool changer. These dedicated tool changers differ significantly in clamping structure, positioning dimensions, and operating interfaces, making it impossible to adapt to different types of tool holders across specifications. This single-purpose design directly leads to manufacturers needing to stock a large number of tool changers of different specifications: not only do they need to equip themselves with a full set of dedicated tools for mainstream tool holder specifications such as HSK63, HSK100, BT50, and BT50, but they also need to purchase corresponding dedicated devices for some specially customized tool holders.

[0003] Quick-change tool changing devices already exist in the prior art. For example, reference patent CN200974137Y discloses a quick-change tool changing device that achieves rapid tool replacement through the cooperation of a chuck, sliding sleeve, and straight shank tool. It is suitable for machining multi-hole workpieces on drilling machines, effectively shortening auxiliary time and improving work efficiency. Secondly, patent CN2030924U proposes a quick-change chuck for drilling, tapping, and reaming. This chuck, through its chuck body and rotating base design, enables rapid tool changing, reducing tool change time and also improving production efficiency. Although the aforementioned patents have achieved rapid tool changing and improved machining efficiency to some extent, these technical solutions have limitations in tool applicability. Specifically, traditional quick-change devices are often designed for a specific type of tool, such as drilling machines or tapping cutters, lacking broad applicability to tools of different specifications, types, and uses. Especially in the field of CNC machining, insufficient compatibility with other types of tools such as milling cutters leads users to need to equip themselves with multiple tool changing devices, increasing costs and operational complexity. Specifically, traditional quick-change devices are often designed for a specific type of tool, such as drilling machines or tapping cutters, and lack broad applicability to tools of different specifications, types and uses. Especially in the field of CNC machining, they are not compatible with other types of tools such as milling cutters, which leads to users needing to equip themselves with multiple tool changers, increasing costs and operational complexity. Utility Model Content

[0004] The purpose of this invention is to provide a quick-change CNC machining tool holder tool changer, which solves the problem in the prior art that different tool changers are required for different tools when changing tools.

[0005] The technical solution adopted by this utility model is a quick-change CNC machining tool holder changing device, including a base and a Latin assembly device. The top of the Latin assembly device is provided with a quick-change chuck, and multiple positioning blocks are arranged around the inner wall of the quick-change chuck. A tool holder is engaged at the top of the quick-change chuck, and the other end of the tool holder is a threaded end. A tool locking nut is connected to the threaded end, and the tool locking nut has a tool clamping opening.

[0006] The feature of this utility model is that, The quick-change chuck has a quick-installation positioning hole at the bottom, and the base has a countersunk hole for fixing bolts; the Latin assembly device is fixed to the quick-change chuck and the base by two cylindrical pins, which pass through the Latin assembly device, the quick-change chuck and the base in sequence.

[0007] There are at least two countersunk holes for fixing bolts, which are evenly distributed on the edge of the base, and the distance between two adjacent countersunk holes for fixing bolts is equal.

[0008] The Latin assembly device is located at the bottom of the quick-release positioning hole.

[0009] The quick-change card header is either BT50 quick-change card header 15, HSK63 quick-change card header, or HSK100 quick-change card header; The positioning block is a BT50 tool holder positioning block, an HSK63 tool holder positioning block, or an HSK100 tool holder positioning block.

[0010] The upper surface of the BT50 quick-change chuck head 15 is fixed with a BT50 tool holder positioning block; the upper surface of the HSK63 quick-change chuck head is fixed with an HSK63 tool holder positioning block; and the upper surface of the HSK100 quick-change chuck head is fixed with an HSK100 tool holder positioning block.

[0011] The side wall of the tool holder has grooves that match the positioning blocks of the BT50 tool holder, the HSK63 tool holder, and the HSK100 tool holder.

[0012] A locking block is fixed to the top of the base, and the locking block matches the quick-release positioning hole.

[0013] The locking block has a cylindrical structure with a diameter of 20-25mm; the quick-release positioning hole at the bottom of the quick-change locking head has a diameter of 20-25mm, and the locking block and the quick-release positioning hole are clearance fit with a clearance of 0.008-0.034mm.

[0014] The beneficial effects of this utility model are: (1) The quick-change CNC machining tool holder changing device provided by this utility model allows users to quickly change tool holders through quick-change collets and positioning blocks, thereby using different tools to complete different machining tasks. The unique fixing method and quick-installation positioning hole design make the tool changing process more stable and reliable, reducing downtime during machining and improving machining efficiency. In addition, by designing multiple countersunk holes for fixing bolts, this device can adapt to different installation scenarios. The cooperation between the base and the collet makes the replacement of the quick-change collet more convenient, without worrying about positioning accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the quick-change CNC machining tool holder changing device of this utility model.

[0016] Figure 2 This is a structural schematic diagram of the base of this utility model; Figure 3 This is a top view of the base of this utility model; Figure 4 This is a schematic diagram of the arrangement of the quick-release positioning holes in the quick-change card head of this utility model; Figure 5 This is a schematic diagram of the structure of the knife handle of this utility model; Figure 6 This is a schematic diagram of the structure of the BT50 quick-change card head of this utility model; Figure 7 This is a cross-sectional view of the HSK63 quick-change card head in this utility model; Figure 8 This is a schematic diagram of the installation of the HSK100 quick-change card head in this utility model; Figure 9 This is a schematic diagram of the installation of the HSK100 tool holder positioning block in Embodiment 3 of this utility model; Figure 10 This is a schematic diagram of the structure of the Latin assembly device of this utility model.

[0017] In the diagram, 1. Base, 2. Quick-change chuck, 3. Tool locking nut, 4. Quick-release positioning hole, 5. BT50 tool holder positioning block, 6. Tool clamping edge, 7. Countersunk hole for fixing bolt, 8. HSK63 quick-change chuck, 9. HSK63 tool holder positioning block, 10. HSK100 quick-change chuck, 11. HSK100 tool holder positioning block, 12. Latin mounting position, 13. Tool holder, 14. Clamping block, 15. BT50 quick-change chuck, 16. Positioning sleeve, 17. Preload spring, 18. Tightening bolt. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 This utility model provides a quick-change CNC machining tool holder changing device, such as... Figure 1 and Figure 2 As shown, it includes a base 1 and a Latin assembly device 12, such as Figure 10As shown, the Latin assembly device 12 includes a positioning sleeve 16, a preload spring 17, and a tightening bolt 18. The positioning sleeve 16 is nested in the reserved central hole of the base 1. The preload spring 17 is placed on top of the positioning sleeve. The tightening bolt 18 is connected to the positioning sleeve through a threaded rod. The function of the Latin assembly device is to provide axial preload force for the quick-change collet. During assembly, the tightening bolt 18 compresses the preload spring 17, making the bottom of the quick-change collet 2 fit tightly against the base 1, eliminating the gap between the quick-release positioning hole 4 and the collet block 14. The Latin assembly device 12 has a quick-change collet 2 on its top. Multiple positioning blocks are arranged around the inner wall of the quick-change collet 2. A knife handle 13 is engaged on the top of the quick-change collet 2. After the knife handle 13 is inserted into the quick-change collet 2, the knife handle is rotated until the groove aligns with the positioning block to achieve engagement. When disassembling the knife handle, first loosen the set screw, then rotate the knife handle in the opposite direction. The positioning block compresses the spring and disengages from the groove, allowing the knife handle to be pulled out. The other end of the tool holder 13 is a threaded end, which is connected to a tool locking nut 3. Tighten the nut using a torque wrench, stopping when the wrench indicates the target torque has been reached to avoid overtightening and damaging the threads or undertightening and causing tool runout. The tool locking nut 3 has a tool clamping port 6, which is a circular through hole. The nut and the tool holder locking spring collet are pressed against each other against the inner wall of the tool holder. The spring collet contracts under force to stabilize the end mill. The inner wall of the threaded end of the tool holder has a trapezoidal tapered hole with the same taper as the spring collet. The spring collet can be selected according to the size of the tool being clamped, with tool clamping specifications ranging from 0.5-25mm. Figure 3 and Figure 4 As shown, the quick-change chuck 2 has a quick-install positioning hole 4 at its bottom, and the base 1 has a countersunk hole 7 for fixing bolts. The Latin assembly device 12 is fixed to the quick-change chuck 2 and the base 1 by two cylindrical pins, which pass through the Latin assembly device 12, the quick-change chuck 2 and the base 1 in sequence. The two cylindrical pins are symmetrically distributed along the center of the base, 80-85mm away from the center of the base. The pin holes on the Latin assembly device 12, the quick-change chuck 2 and the base 1 are all 8-10mm in diameter. The three are fitted together to ensure that there is no loosening after the cylindrical pins are inserted, and at the same time, it is convenient to disassemble and replace the quick-change chuck 2. The number of countersunk holes 7 for fixing bolts is at least two, and they are evenly distributed on the edge of the base 1, with equal distance between adjacent countersunk holes 7; the Latin assembly device 12 is located at the bottom of the quick-release positioning hole 4; the quick-change collet 2 is a BT50 quick-change collet 15, an HSK63 quick-change collet 8, or an HSK100 quick-change collet 10; the positioning block is a BT50 tool holder positioning block 5, an HSK63 tool holder positioning block 9, or an HSK100 tool holder positioning block 11; the upper end face of the BT50 quick-change collet 15 is fixed to the BT50 tool holder positioning block 5, the upper end face of the HSK63 quick-change collet 8 is fixed to the HSK63 tool holder positioning block 9, and the upper end face of the HSK100 quick-change collet 10 is fixed to the HSK100 tool holder positioning block 11; such as Figure 5As shown, the side wall of the tool holder 13 has a groove, which matches the BT50 tool holder positioning block 5, the HSK63 tool holder positioning block 9, and the HSK100 tool holder positioning block 11 respectively; the top of the base 1 is fixedly connected to a block 14, which matches the quick-release positioning hole 4; the block 14 is a cylindrical structure with a diameter of 20-25mm; the quick-release positioning hole at the bottom of the quick-change chuck 2 has a diameter of 20-25mm, and the block 14 and the quick-release positioning hole are clearance fit, with a clearance of 0.008-0.034mm.

[0020] The Latin assembly device 12 achieves a gapless rigid connection between the quick-change collet 2 and the base 1 through force transmission and structural linkage, as follows: First, the quick-change collet 2 is fitted onto the collet block of the base 1 through the quick-installation positioning hole 4. For easy assembly and disassembly, the quick-installation positioning hole 4 and the collet block are designed with a clearance fit. Then, the tightening bolt 18 and the positioning sleeve 16 are connected through a threaded pair. When the tightening bolt 18 is rotated clockwise, the lower end face of the preload spring 17 directly contacts the top end face of the positioning sleeve 16. The upward elastic reaction force of the spring pushes the positioning sleeve 16. The positioning sleeve 16 is nested in the central hole of the base 1 with a clearance fit. The positioning sleeve 16 slides axially along the central hole, and the radial displacement of the sleeve is limited by the hole wall. Therefore, the positioning sleeve 16 slides upward along the axis of the central hole under the action of the spring force, becoming the intermediary for the force to be transmitted from the spring to the quick-change collet 2. When the positioning sleeve 16 slides upward, its top end face directly contacts the bottom of the quick-change chuck 2 and applies an upward thrust to the quick-change chuck 2, which actually means that the quick-change chuck 2 moves towards the base.

[0021] Example 2 This embodiment provides a quick-change CNC machining tool holder changing device, such as... Figure 1-5 As shown, the device includes a base 1 and a Latin assembly device 12. The top of the Latin assembly device 12 is equipped with a quick-change collet 2. Multiple positioning blocks are arranged around the inner wall of the quick-change collet 2. A tool holder 13 is engaged at the top of the quick-change collet 2. The other end of the tool holder 13 is a threaded end, which is connected to a tool locking nut 3. The tool locking nut 3 has a tool clamping port 6. The tool clamping port 6 of the tool locking nut 3 is a circular through hole. The nut and the tool holder lock the spring collet and the inner wall of the tool holder are pressed against each other. The spring collet is compressed under force to stabilize the milling cutter. The inner wall of the threaded end of the tool holder has a trapezoidal tapered hole with the same taper as the spring collet. The spring collet can be selected according to the size of the tool to be clamped. The tool clamping size can reach 0.5-25mm.

[0022] Example 3 This embodiment provides a quick-change CNC machining tool holder changing device, such as... Figure 1-5As shown, the device includes a base 1 and a Latin assembly device 12. The top of the Latin assembly device 12 is equipped with a quick-change collet 2. Multiple positioning blocks are arranged around the inner wall of the quick-change collet 2. A tool holder 13 is engaged at the top of the quick-change collet 2. The other end of the tool holder 13 is a threaded end, which is connected to a tool locking nut 3. The tool locking nut 3 has a tool clamping port 6. The tool clamping port 6 of the tool locking nut 3 is a circular through hole. The nut and the tool holder lock the spring collet and the inner wall of the tool holder are pressed against each other. The spring collet is compressed under force to stabilize the milling cutter. The inner wall of the threaded end of the tool holder has a trapezoidal tapered hole with the same taper as the spring collet. The spring collet can be selected according to the size of the tool to be clamped. The tool clamping size can reach 0.5-25mm. The quick-change chuck 2 has a quick-installation positioning hole 4 at its bottom, and the base 1 has a countersunk hole 7 for fixing bolts. The Latin assembly device 12 is fixed to the quick-change chuck 2 and the base 1 by two cylindrical pins, which pass through the Latin assembly device 12, the quick-change chuck 2 and the base 1 in sequence. There are at least two countersunk holes 7 for fixing bolts, which are evenly distributed on the edge of the base 1 and the distance between two adjacent countersunk holes 7 is equal. The Latin assembly device 12 is located at the bottom of the quick-installation positioning hole 4. A locking block 14 is fixed to the top of the base 1 and matches the quick-installation positioning hole 4. The locking block 14 is a cylindrical structure with a diameter of 20-25mm. The quick-installation positioning hole at the bottom of the quick-change chuck 2 has a diameter of 20-25mm. The locking block 14 and the quick-installation positioning hole are clearance fit, with a clearance of 0.008-0.034mm.

[0023] Example 4 This embodiment provides a quick-change CNC machining tool holder changing device, such as... Figure 1-6As shown, the device includes a base 1 and a Latin assembly device 12. The top of the Latin assembly device 12 is equipped with a quick-change collet 2. Multiple positioning blocks are arranged around the inner wall of the quick-change collet 2. A tool holder 13 is engaged at the top of the quick-change collet 2. The other end of the tool holder 13 is a threaded end, which is connected to a tool locking nut 3. The tool locking nut 3 has a tool clamping port 6. The tool clamping port 6 of the tool locking nut 3 is a circular through hole. The nut and the tool holder lock the spring collet and the inner wall of the tool holder are pressed against each other. The spring collet is compressed under force to stabilize the milling cutter. The inner wall of the threaded end of the tool holder has a trapezoidal tapered hole with the same taper as the spring collet. The spring collet can be selected according to the size of the tool to be clamped. The tool clamping size can reach 0.5-25mm. The quick-change collet 2 has a quick-installation positioning hole 4 at its bottom, and the base 1 has a countersunk hole 7 for fixing bolts. The Latin assembly device 12 is fixed to the quick-change collet 2 and the base 1 by two cylindrical pins, which pass through the Latin assembly device 12, the quick-change collet 2 and the base 1 in sequence. There are at least two countersunk holes 7 for fixing bolts, which are evenly distributed on the edge of the base 1 and the distance between two adjacent countersunk holes 7 is equal. The Latin assembly device 12 is located at the bottom of the quick-installation positioning hole 4. The quick-change collet 2 is a BT50 quick-change collet 15, and the upper end face of the BT50 quick-change collet 15 is fixed to the BT50 tool holder positioning block 5. The side wall of the tool holder 13 has a groove, which matches the BT50 tool holder positioning block 5.

[0024] Example 5 This embodiment provides a quick-change CNC machining tool holder changing device, such as... Figure 1-7As shown, the device includes a base 1 and a Latin assembly device 12. The top of the Latin assembly device 12 is equipped with a quick-change collet 2. Multiple positioning blocks are arranged around the inner wall of the quick-change collet 2. A tool holder 13 is engaged at the top of the quick-change collet 2. The other end of the tool holder 13 is a threaded end, which is connected to a tool locking nut 3. The tool locking nut 3 has a tool clamping port 6. The tool clamping port 6 of the tool locking nut 3 is a circular through hole. The nut and the tool holder lock the spring collet and the inner wall of the tool holder are pressed against each other. The spring collet is compressed under force to stabilize the milling cutter. The inner wall of the threaded end of the tool holder has a trapezoidal tapered hole with the same taper as the spring collet. The spring collet can be selected according to the size of the tool to be clamped. The tool clamping size can reach 0.5-25mm. The quick-change collet 2 has a quick-installation positioning hole 4 at its bottom, and the base 1 has a countersunk hole 7 for fixing bolts. The Latin assembly device 12 is fixed to the quick-change collet 2 and the base 1 by two cylindrical pins, which pass through the Latin assembly device 12, the quick-change collet 2 and the base 1 in sequence. There are at least two countersunk holes 7 for fixing bolts, which are evenly distributed on the edge of the base 1 and the distance between two adjacent countersunk holes 7 is equal. The Latin assembly device 12 is located at the bottom of the quick-installation positioning hole 4. The quick-change collet 2 is an HSK63 quick-change collet 8, and the upper end face of the HSK63 quick-change collet 8 is fixed to the HSK63 tool holder positioning block 9. The side wall of the tool holder 13 has a groove, which matches the HSK63 tool holder positioning block 9.

[0025] Example 6 This embodiment provides a quick-change CNC machining tool holder changing device, such as... Figure 1-8As shown, the device includes a base 1 and a Latin assembly device 12. The top of the Latin assembly device 12 is equipped with a quick-change collet 2. Multiple positioning blocks are arranged around the inner wall of the quick-change collet 2. A tool holder 13 is engaged at the top of the quick-change collet 2. The other end of the tool holder 13 is a threaded end, which is connected to a tool locking nut 3. The tool locking nut 3 has a tool clamping port 6. The tool clamping port 6 of the tool locking nut 3 is a circular through hole. The nut and the tool holder lock the spring collet and the inner wall of the tool holder are pressed against each other. The spring collet is compressed under force to stabilize the milling cutter. The inner wall of the threaded end of the tool holder has a trapezoidal tapered hole with the same taper as the spring collet. The spring collet can be selected according to the size of the tool to be clamped. The tool clamping size can reach 0.5-25mm. The quick-change collet 2 has a quick-installation positioning hole 4 at its bottom, and the base 1 has a countersunk hole 7 for fixing bolts. The Latin assembly device 12 is fixed to the quick-change collet 2 and the base 1 by two cylindrical pins, which pass through the Latin assembly device 12, the quick-change collet 2 and the base 1 in sequence. There are at least two countersunk holes 7 for fixing bolts, which are evenly distributed on the edge of the base 1 and the distance between two adjacent countersunk holes 7 is equal. The Latin assembly device 12 is located at the bottom of the quick-installation positioning hole 4. The quick-change collet 2 is an HSK100 quick-change collet 10, and the upper end face of the HSK100 quick-change collet 10 is fixed to the HSK100 tool holder positioning block 11. The side wall of the tool holder 13 has a groove, which matches the HSK100 tool holder positioning block 11.

[0026] The working principle of this utility model is as follows: First, according to the actual processing scenario (such as a machine tool workbench), the base 1 is fastened to the mounting surface with bolts through the countersunk bolt holes 7; ensure that the cylindrical locking block on the top of the base 1 faces upwards without obstruction, in preparation for the subsequent positioning of the quick-change chuck 2. Then, according to the specifications of the tool holder to be used, the corresponding quick-change chuck 2 is selected; align the quick-install positioning hole 4 at the bottom of the quick-change chuck 2 with the locking block 14 of the base 1, and slowly insert it with a clearance fit to achieve initial positioning; then take two cylindrical pins and pass them through the pin holes of the Latin assembly device 12, the quick-change chuck 2, and the base 1 in sequence for transition fit, to complete the rigid fixation of the three and ensure that the quick-change chuck 2 is not loose. Next, take the tool holder 13 that matches the quick-change chuck 2, align the bottom of the tool holder 13 with the top opening of the quick-change chuck 2; rotate the tool holder 13 so that the groove on the side wall of the tool holder 13 is fully engaged with the positioning locking block on the inner wall of the quick-change chuck 2, to achieve circumferential positioning and axial limiting of the tool holder, and prevent the tool holder from falling off. Select the appropriate cutting tool according to the machining requirements and match it with a spring collet of suitable size. Place the spring collet into the trapezoidal conical hole on the inner wall of the threaded end of the tool holder, and then insert one end of the cutting tool into the center hole of the spring collet and the tool clamping port 6 of the tool locking nut. Tighten the tool locking nut 3 clockwise. When the nut engages with the tool holder 13 through the thread, it compresses the spring collet, causing it to contract along the trapezoidal conical hole and tightly wrap around the cutting tool, achieving rigid fixation. Finally, loosen the tool locking nut, remove the old cutting tool and spring collet, and replace it with a tool holder of a different specification. When changing to a tool holder of a different specification, pull out the cylindrical pin, remove the current quick-change chuck 2, and replace it with a quick-change chuck 2 of the corresponding specification to achieve quick switching between different tool holders.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

Claims

1. A quick-change CNC machining tool holder changing device, characterized in that, Includes a base (1) and a Latin assembly device (12). The Latin assembly device (12) is provided with a quick-change chuck (2) on the top. Multiple positioning blocks are arranged around the inner wall of the quick-change chuck (2). A knife handle (13) is attached to the top of the quick-change chuck (2). The other end of the knife handle (13) is a threaded end, and a tool locking nut (3) is connected to the threaded end. The tool locking nut (3) has a tool clamping port (6).

2. The quick-change CNC machining tool holder changing device according to claim 1, characterized in that, The quick-change chuck (2) has a quick-install positioning hole (4) at the bottom, and the base (1) has a countersunk hole (7) for fixing bolts; the Latin assembly device (12) is fixed to the quick-change chuck (2) and the base (1) by two cylindrical pins, which pass through the Latin assembly device (12), the quick-change chuck (2) and the base (1) in sequence.

3. The quick-change CNC machining tool holder changing device according to claim 2, characterized in that, The number of countersunk holes (7) for fixing bolts is at least 2, and they are evenly distributed on the edge of the base (1), with the distance between two adjacent countersunk holes (7) being equal.

4. The quick-change CNC machining tool holder changing device according to claim 1, characterized in that, The Latin assembly device (12) is located at the bottom of the quick-release positioning hole (4).

5. The quick-change CNC machining tool holder changing device according to claim 1, characterized in that, The quick-change card head (2) is a BT50 quick-change card head 15 (15), an HSK63 quick-change card head (8), or an HSK100 quick-change card head (10). The positioning block is a BT50 tool holder positioning block (5), an HSK63 tool holder positioning block (9), or an HSK100 tool holder positioning block (11).

6. The quick-change CNC machining tool holder changing device according to claim 5, characterized in that, The upper end face of the BT50 quick-change chuck 15 (15) is fixed to the BT50 tool holder positioning block (5), the upper end face of the HSK63 quick-change chuck (8) is fixed to the HSK63 tool holder positioning block (9), and the upper end face of the HSK100 quick-change chuck (10) is fixed to the HSK100 tool holder positioning block (11).

7. The quick-change CNC machining tool holder changing device according to claim 5, characterized in that, The side wall of the tool holder (13) is provided with a groove, which is matched with the BT50 tool holder positioning block (5), the HSK63 tool holder positioning block (9) and the HSK100 tool holder positioning block (11) respectively.

8. The quick-change CNC machining tool holder changing device according to claim 5, characterized in that, The base (1) has a locking block (14) fixed to its top, and the locking block (14) matches the quick-release positioning hole (4).

9. The quick-change CNC machining tool holder changing device according to claim 8, characterized in that, The card block (14) is a cylindrical structure with a diameter of 20-25mm; the quick-release positioning hole at the bottom of the quick-change card head (2) has a diameter of 20-25mm, and the card block (14) and the quick-release positioning hole (4) are in clearance fit with a clearance of 0.008-0.034mm.

Images