Tool magazine with a correction structure

Abstract

The utility model relates to tool changer technical field, especially, relate to a tool changer with correction structure, including tool changer body, the tool changer body includes the tool holder shell and tool holder core, the upper connecting portion outer periphery of tool holder core is equipped with the flange section, the flange section is seted up with seal groove, be equipped with O type ring in the seal groove, the upper and lower ends of seal groove form annular convex edge, the annular convex edge is used for forming axial location to O type ring, the position of tool holder shell inner wall surface and the abutment of annular convex edge forms has the correction guide angle, the correction guide angle is used for with the radial cooperation of annular convex edge, the concentricity of tool holder core and tool holder shell is restricted, O type ring is used for realizing the sealing and radial deflection buffer between tool holder core and tool holder shell, the utility model provides a kind of tool changer with correction structure, with concentricity dynamic correction, strong sealing, stable clamping and long-acting protection, to adapt to the demand of PCB precision machining.

Description

Technical Field

[0001] This utility model relates to the field of tool changer technology, and in particular to a tool changer with a correction structure. Background Technology

[0002] In the PCB manufacturing industry, drilling, milling and other processes require frequent switching of different tool specifications. The tool changing accuracy directly determines key indicators of the PCB, such as hole position accuracy and hole wall quality.

[0003] Traditional tool changers have several technical defects: First, they lack an effective axial limiting structure for the O-ring, which is prone to displacement due to tool change vibration or axial force, leading to an increased clearance between the O-ring and the housing, resulting in loss of sealing effect and inability to stably constrain concentricity; second, concentricity constraint and sealing functions are disconnected, with most structures only achieving one function, requiring additional components, resulting in increased tool changer size and complex assembly; third, the movement of the tool holder core lacks effective guidance and buffering, and uncontrolled axial displacement or radial wobbling can easily damage the core mating structure, shortening its service life; fourth, the protective structure is not accurately positioned, allowing impurities to easily enter the interior, causing the clamping components to jam and the mating surfaces to wear, further exacerbating concentricity errors. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a tool changer with a correction structure, which has dynamic concentricity correction, strong sealing, stable clamping and long-term protection, to meet the needs of precision PCB machining.

[0005] The present invention adopts the following technical solution: A tool changer with a correction structure includes a tool changer body adapted to a tool used in PCB manufacturing, for clamping, positioning, and changing the tool. The tool changer body includes a tool holder housing and a tool holder core assembled inside the tool holder housing. A flange section is provided on the outer periphery of the upper connecting portion of the tool holder core. A sealing groove is formed in the flange section, and an O-ring is provided within the sealing groove. Annular flanges are formed at the upper and lower ends of the sealing groove, and these flanges are used to axially limit the O-ring. A correction guide angle is formed at the position where the inner wall surface of the tool holder housing abuts the annular flange. The correction guide angle is used to radially engage with the annular flange to constrain the concentricity of the tool holder core and the tool holder housing. The O-ring is used to achieve sealing between the tool holder core and the tool holder housing and to buffer radial runout.

[0006] A further improvement to the above technical solution is that the top outer peripheral wall of the tool holder housing is provided with a locking boss.

[0007] A further improvement to the above technical solution is that the interior of the tool holder housing is provided with an upper cavity and a lower cavity; the upper cavity and the lower cavity are connected; the bottom end of the lower cavity is connected to a core outlet hole, which is used for the bottom end of the tool holder core to pass through.

[0008] A further improvement to the above technical solution is that the upper connecting part is connected to the lower connecting part; a tool changing chamber is provided on the inner side of the upper connecting part, the tool changing chamber is used to clamp the tool to realize the tool changing operation; the bottom end of the lower connecting part passes through the core outlet hole, and a retaining spring is snapped on the outer periphery of the lower connecting part, the retaining spring is used to limit the axial displacement of the tool holder core in the tool holder housing.

[0009] A further improvement to the above technical solution is that the tool changing chamber includes a clearance cavity and several free grippers; the clearance cavity is used for the tool to extend into and form a clearance space; the several free grippers are circumferentially distributed around the top of the clearance cavity, the upper inner diameter of the gripper formed by the combination of the free grippers is adapted to the outer diameter of the tool, and the lower inner diameter of the gripper formed by the combination of the free grippers is smaller than the outer diameter of the tool, which is used to guide the tool to smoothly enter and achieve stable clamping.

[0010] A further improvement to the above technical solution is that the bottom end of the avoidance cavity is provided with an inner conical surface, which is used to adapt to and accommodate the tip of the tool.

[0011] A further improvement to the above technical solution is that the sealing groove is formed on the circumferential surface of the flange section, and the O-ring is disposed between the upper and lower annular protrusions of the sealing groove to limit the excessive deformation of the O-ring in the axial direction and ensure the adhesion between the O-ring and the inner wall of the tool holder housing.

[0012] A further improvement to the above technical solution is that the tool changer body also includes a dust cover, which is sleeved on the tool holder core and engaged with a locking protrusion on the outer peripheral wall of the top of the tool holder housing.

[0013] A further improvement to the above technical solution is that the tool changer body further includes a spring element, which is sleeved on the outer periphery of the tool holder core and located between the flange section and the lower cavity; the top end of the spring element abuts against the lower end of the flange section, and the bottom end of the spring element abuts against the lower end of the lower cavity, for providing axial elastic restoring force for the tool holder core.

[0014] A further improvement to the above technical solution is that the cutting tool is a milling cutter, and the cutting tool is connected to a spindle.

[0015] The beneficial effects of this utility model are as follows: This utility model achieves advantages such as precise positioning, stable clamping, dynamic correction, and long-term protection through the coordinated design of various components. The core technologies include the upper and lower annular protrusions of the tool holder core sealing groove limiting the O-ring, and the radial correction of the tool holder shell's guide angle. The upper and lower cavities of the tool holder shell, along with the core outlet hole, provide movement space and auxiliary radial limiting for the tool holder core. The engaging boss provides an assembly reference for the dust cover. The upper connecting part of the tool holder core achieves smooth tool access and secure clamping through the avoidance cavity and free gripper in the tool changing chamber. The retaining spring in the lower connecting part restricts axial displacement, and the annular protrusion of the flange sealing groove ensures stable engagement between the O-ring and the corrected guide angle. The O-ring combines concentricity constraint and sealing, the spring provides elastic reset and buffering, the dust cover prevents impurities from entering, and the transmission connection between the milling cutter and the spindle, combined with core concentricity constraint, ensures machining accuracy. The components work together to solve the problems of poor concentricity of traditional tool changers, easy failure of O-rings, and the inability to balance sealing and alignment. They also achieve the advantages of high tool changing accuracy, stable clamping, and low maintenance frequency. They are fully compatible with the stringent requirements of PCB precision machining for tool positioning accuracy and machining stability, and can significantly improve PCB product yield and machining efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the tool changer body and the tool of the tool changer with correction structure of this utility model. Figure 2 for Figure 1 A side view of the tool changer body with a correction structure; Figure 3 for Figure 2 A cross-sectional view of the tool changer body along the AA direction; Figure 4 for Figure 3 A magnified view of circle A on the tool changer body; Figure 5 for Figure 1 An exploded schematic diagram of the tool changer body; Figure 6 for Figure 1 A three-dimensional sectional view of the tool changer body and the cutting tool.

[0017] The numbers on the map are: 10. Tool changer body; 11. Dust cover; 12. Spring components; 20. Tool holder housing; 21. Corrected guide angle; 22. Engaging boss; 23. Upper cavity; 24. Lower cavity; 25. Core ejection hole; 30. Tool holder core; 31. Upper connecting part; 32. Lower connecting part; 33. Snap ring; 40. Flange section; 41. Sealing groove; 42. O-ring; 43. Annular flange; 50. Tool changing chamber; 51. Clearance chamber; 52. Free gripper; 53. Inner conical surface; 70. Cutting tool; 71. Spindle. Detailed Implementation

[0018] 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.

[0019] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," 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 this utility model 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 limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 1 to 6The image shows an embodiment of this utility model, relating to a tool changer with a correction structure. It is characterized by comprising a tool changer body 10, which is adapted to a tool 70 used in PCB manufacturing, for clamping, positioning, and changing the tool 70. The tool changer body 10 includes a tool holder housing 20 and a tool holder core 30 assembled inside the tool holder housing 20. A flange section 40 is provided on the outer periphery of the upper connecting portion 31 of the tool holder core 30, and the flange section 40 has a sealing groove 41. An O-ring 42 is provided in the sealing groove 41. The upper and lower ends of the sealing groove 41 form annular protrusions 43, which are used to axially limit the O-ring 42. A correction guide angle 21 is formed at the position where the inner wall surface of the tool holder housing 20 abuts the annular protrusion 43. The correction guide angle 21 is used to radially cooperate with the annular protrusion 43 to constrain the concentricity of the tool holder core 30 and the tool holder housing 20. The O-ring 42 is used to achieve sealing between the tool holder core 30 and the tool holder housing 20 and to buffer radial runout. Specifically, the sealing groove 41 of the flange section 40 of the tool holder core 30 forms a precise axial limit on the O-ring 42 through the upper and lower annular protrusions 43, which can prevent the O-ring 42 from excessive displacement due to tool changing vibration or axial force, and ensure that the annular protrusions 43 and the correction guide angle 21 of the tool holder housing 20 maintain stable radial contact. The correction guide angle 21 generates a radial correction force by means of the elastic deformation of the O-ring 42, which can dynamically offset the radial offset of the tool holder core 30, fundamentally solving the problem of inaccurate tool positioning of the tool 70 caused by concentricity deviation in traditional tool changers. At the same time, the O-ring 42 also has a sealing function, which can prevent liquids and dust in PCB processing from entering the gap between the tool holder core 30 and the housing, achieving the dual effects of concentricity constraint and sealing protection, providing a stable tool positioning reference for precision PCB processing, and significantly reducing the PCB scrap rate caused by insufficient tool changing accuracy.

[0022] like Figure 4 As shown, the top outer peripheral wall of the tool holder housing 20 is provided with a locking boss 22. Specifically, the locking boss 22 on the top of the tool holder housing 20 provides a clear positioning reference for the subsequent assembly of the dust cover 11. Compared with the traditional non-positioning structure, it can ensure the coaxial assembly of the dust cover 11 with the tool holder housing 20 and the tool holder core 30, avoiding the cover from shifting and forming a protective gap. At the same time, the boss structure enhances the fastening stability of the cover and the housing, can resist the high-frequency vibration of the PCB processing equipment, prevent the cover from loosening and falling off, and indirectly protect the core components such as the sealing groove 41 and the O-ring 42 from contamination by impurities, maintaining the long-term effectiveness of the concentricity constraint structure.

[0023] like Figure 3As shown, the tool holder housing 20 has an upper cavity 23 and a lower cavity 24 inside; the upper cavity 23 and the lower cavity 24 are connected; the bottom end of the lower cavity 24 is connected to a core outlet hole 25, which is used for the bottom end of the tool holder core 30 to pass through. Specifically, the upper cavity 23 and the lower cavity 24 connected inside the tool holder housing 20 provide sufficient space for the axial lifting and lowering of the tool holder core 30, adapting to the vertical displacement requirements of the tool holder core 30 with the pressure of the spindle 71 during tool changing; the core outlet hole 25 at the bottom end of the lower cavity 24 can not only guide the lower connecting part 32 of the tool holder core 30 to pass through accurately, but its hole wall can also form an auxiliary radial limit with the outer wall of the tool holder core 30, further suppressing the radial sway of the tool holder core 30, forming a double anti-offset effect with the concentricity constraint of the corrected guide angle 21, ensuring that the tool holder core 30 always maintains axial stability during the movement, and avoiding the concentricity error caused by insufficient cavity space or positioning deviation of the core outlet hole 25.

[0024] like Figure 3 and Figure 6 As shown, the upper connecting part 31 is connected to the lower connecting part 32; the inner side of the upper connecting part 31 is provided with a tool changing chamber 50, which is used to clamp the tool 70 to realize the tool changing operation; the bottom end of the lower connecting part 32 passes through the core outlet hole 25, and a retaining spring 33 is snapped onto the outer periphery of the lower connecting part 32, which is used to limit the axial displacement of the tool holder core 30 in the tool holder housing. Specifically, the tool changing chamber 50 of the upper connecting part 31 of the tool holder core 30 directly contacts the tool 70, shortening the force transmission path between the tool 70 and the tool holder core 30, which can improve the clamping stability of the tool 70 and avoid the tool 70 loosening caused by traditional indirect clamping; the retaining spring 33 on the outer periphery of the lower connecting part 32 can accurately limit the axial displacement range of the tool holder core 30 in the tool holder housing, preventing the O-ring 42 from disengaging from the correction guide angle 21 due to excessive downward movement of the tool holder core 30 due to tool changing impact force, and also preventing the tool holder core 30 from excessively moving upward and damaging the fit between the tool changing chamber 50 and the tool 70, ensuring that the tool holder core 30 can return to the initial position adapted to the correction guide angle 21 after each reset, reducing the error of repeated positioning during tool changing, and forming a synergistic guarantee of axial limiting and radial correction with the core concentricity constraint structure.

[0025] like Figure 3 and Figure 6As shown, the tool changing chamber 50 includes a clearance chamber 51 and a plurality of free grippers 52; the clearance chamber 51 is used for the tool 70 to extend into and form a clearance space; the plurality of free grippers 52 are distributed circumferentially around the top of the clearance chamber 51, the upper inner diameter of the gripper formed by the combination of the free grippers 52 is adapted to the outer diameter of the tool 70, and the lower inner diameter of the gripper formed by the combination of the free grippers 52 is smaller than the outer diameter of the tool 70, which is used to guide the tool 70 to smoothly enter and achieve stable clamping. Specifically, the clearance cavity 51 of the tool changing chamber 50 provides sufficient space for the tip and cutting edge of the tool 70 when it is inserted, preventing the tool 70 from colliding with the cavity wall and causing damage to the cutting edge or deformation of the tip, thus protecting the precision of the tool 70. Several free grippers 52 are distributed circumferentially around the top of the clearance cavity 51. The inner diameter of the upper end is adapted to the outer diameter of the tool 70, which can guide the tool 70 to be inserted quickly and accurately, reducing the alignment difficulty of manual or mechanical tool changing. The inner diameter of the lower end is smaller than the outer diameter of the tool 70, so it can form an elastic clamping force, ensuring the clamping is firm while avoiding excessive clamping that could cause deformation of the tool 70. This structure, in conjunction with the core concentricity constraint structure, can achieve a continuous effect of precise tool insertion, stable clamping, and axis correction, significantly improving tool changing efficiency and tool 70 protection capabilities.

[0026] like Figure 3 and Figure 6 As shown, the bottom end of the clearance cavity 51 is provided with an inner conical surface 53, which is used to adapt to and accommodate the tip of the tool 70. Specifically, the inner conical surface 53 at the bottom end of the clearance cavity is precisely matched with the taper of the tip of the tool 70, which can not only achieve complete accommodation of the tip and avoid wear caused by the tip being suspended or in contact with the plane, but also help to correct the coaxiality of the axis of the tool 70 and the axis of the tool holder core 30 through the conical surface fit, forming a double axis calibration with the concentricity constraint of the guide angle 21 and the O-ring 42; especially for slender milling cutters commonly used in PCB processing, the inner conical surface 53 can reduce the wobble of the milling cutter tip, further improve the hole position accuracy during drilling, and solve the drilling deviation problem caused by the lack of tip positioning in traditional tool changers.

[0027] like Figures 4 to 6As shown, the sealing groove 41 is formed on the circumferential surface of the flange section 40, and the O-ring 42 is disposed between the upper and lower annular protrusions 43 of the sealing groove 41. This serves to limit excessive axial deformation of the O-ring 42 and ensure the contact strength between the O-ring 42 and the inner wall of the tool holder housing 20. Specifically, the O-ring 42, disposed between the upper and lower annular protrusions 43 of the sealing groove 41, effectively limits the axial deformation range of the O-ring 42, preventing axial compression or tensile deformation due to long-term stress, which would reduce the contact area with the corrected guide angle 21 and decrease the concentricity constraint capability. Simultaneously, the annular protrusions 43 enhance the structural strength of the sealing groove 41, preventing cracking due to the reaction force of the O-ring 42, extending the service life of the tool holder core 30, and ensuring long-term stable contact strength between the O-ring 42 and the inner wall of the tool holder housing 20, providing continuous and reliable structural support for concentricity constraint.

[0028] like Figures 3 to 6 As shown, the tool changer body 10 also includes a dust cover 11, which is sleeved on the tool holder core 30 and fastened to the engaging boss 22 on the outer peripheral wall of the top of the tool holder housing. Specifically, the dust cover 11 is sleeved on the connecting part 31 of the tool holder core 30 and fastened to the engaging boss 22, which can directly seal the opening of the tool changing chamber 50, preventing fine cutting debris and dust generated during PCB processing from entering the tool changing chamber 50, avoiding jamming of the free gripper 52 due to impurity accumulation, or sealing failure of the sealing groove 41 and O-ring 42 due to impurity contamination; at the same time, the engaging boss 22 ensures the coaxiality of the dust cover 11 and the tool holder core 30, preventing the cover from blocking the entrance of the tool changing chamber 50 and affecting the tool changing operation, providing long-term cleaning protection for the core concentricity constraint structure and the tool changing chamber 50 components, and reducing the maintenance frequency of the tool changer.

[0029] like Figures 3 to 6 As shown, the tool changer body 10 also includes a spring 12, which is sleeved on the outer periphery of the tool holder core 30 and located between the flange section 40 and the lower cavity 24. The top end of the spring 12 abuts against the lower end of the flange section 40, and the bottom end of the spring 12 abuts against the lower end of the lower cavity 24, for providing axial elastic restoring force for the tool holder core 30. Specifically, the spring element 12 is sleeved on the outer periphery of the tool holder core 30 and abuts against the flange section 40 and the lower cavity 24. When the tool holder core 30 is pressed down by the spindle 71, it can compress and store force. After the external force is released, it can provide a smooth axial elastic restoring force for the tool holder core 30, ensuring that the tool holder core 30 accurately returns to the initial position and avoids the change in the fit relationship between the O-ring 42 and the correction guide angle 21 due to the reset deviation. At the same time, the buffering effect of the spring element 12 can absorb the impact force during tool change, reduce the rigid collision wear of the flange section 40, sealing groove 41 and O-ring 42 of the tool holder core 30, extend the service life of the core concentricity constraint structure, and maintain its long-term stable correction effect.

[0030] like Figure 1 and Figure 6 As shown, the tool 70 is a milling cutter, which is connected to a spindle 71. Specifically, the tool 70 is a special milling cutter for PCB drilling, which can be specifically adapted to the drilling requirements of PCB substrates, avoiding power transmission losses caused by poor compatibility between general-purpose tools 70 and tool changers. The transmission connection between the milling cutter and the spindle 71 ensures that the torque and speed of the spindle 71 are accurately transmitted to the milling cutter, avoiding milling cutter speed fluctuations due to loose transmission. More importantly, the sealing groove 41, the annular protrusion 43, the O-ring 42, and the correction guide angle 21 ensure that the milling cutter axis and the spindle 71 axis are highly concentric, solving the problems of rough hole walls and out-of-tolerance hole diameters caused by misalignment between the milling cutter and the spindle 71 in traditional tool changers, significantly improving the processing quality and consistency of PCB drilling.

[0031] The working principle of this utility model is as follows: The tool holder core 30 is assembled inside the tool holder housing 20. The upper and lower annular protrusions 43 of the sealing groove 41 of its flange section 40 limit the O-ring 42 to a fixed axial position, so that the O-ring 42 always maintains radial contact with the correction guide angle 21 of the inner wall of the tool holder housing 20. When the tool holder core 30 is subjected to external force (such as the pressure of the spindle 71) and radially deviates, the contact between the O-ring 42 and the correction guide angle 21 generates a radial corrective force, dynamically pushing the tool holder core 30 to reset, ensuring the concentricity of the tool holder core 30 and the housing. When changing tools, the spindle 71 drives the milling cutter downward. The milling cutter first extends into the tool changing cavity 50 of the connecting part 31 on the tool holder core 30. The clearance cavity 51 provides space for the milling cutter. The inner conical surface 53 is adapted to the tip of the milling cutter to assist in correcting the axis. The free gripper 52 is guided by the inner diameter of the upper end. When the milling cutter is inserted, its lower end contracts its inner diameter to form an elastic clamp. At this time, the tool holder core 30 is pressed downward by the spindle 71, the lower connecting part 32 slides along the core outlet hole 25, the spring 12 is compressed and stored, and the retaining spring 33 restricts the tool holder core 30 from going too far downward. After the tool change is completed, the spindle 71 drives the milling cutter upward, the spring 12 elastically resets and pushes the tool holder core 30 back to its initial position, and the retaining spring 33 prevents it from going too far upward. The dust cover 11 closes the tool changing chamber 50 by engaging with the engagement boss 22 of the tool holder housing 20 to prevent impurities from entering. Throughout the process, the O-ring 42 continuously blocks liquid and dust, the annular convex edge 43 ensures that the O-ring 42 does not shift, and the corrected guide angle 21 dynamically maintains concentricity, ultimately achieving high-precision concentric cooperation between the milling cutter and the spindle 71 to ensure the quality of PCB drilling.

[0032] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A tool magazine with a correction structure, characterized in that The device includes a tool changer body adapted to the cutting tools used in PCB manufacturing, for clamping, positioning, and changing the cutting tools. The tool changer body includes a tool holder housing and a tool holder core assembled inside the tool holder housing. The upper connecting portion of the tool holder core has a flange section with a sealing groove. An O-ring is installed within the sealing groove, and annular protrusions are formed at the upper and lower ends of the sealing groove. These annular protrusions axially limit the O-ring. A corrective guide angle is formed at the position where the inner wall of the tool holder housing abuts the annular protrusions. This corrective guide angle radially engages with the annular protrusions to constrain the concentricity of the tool holder core and the tool holder housing. The O-ring provides sealing between the tool holder core and the tool holder housing and buffers radial runout.

2. The tool magazine with a correction structure according to claim 1, characterized in that, The top outer peripheral wall of the tool holder housing is provided with a locking boss.

3. The tool magazine with a correction structure according to claim 1, characterized in that, The tool holder housing has an upper cavity and a lower cavity inside; the upper cavity and the lower cavity are connected; the bottom end of the lower cavity is connected to a core outlet hole, which is used for the bottom end of the tool holder core to pass through.

4. The tool magazine with a correction structure according to claim 1, characterized in that, The upper connecting part is connected to the lower connecting part; the inner side of the upper connecting part is provided with a tool changing chamber, which is used to hold the tool to realize the tool changing operation; the bottom end of the lower connecting part passes through the core outlet hole, and a retaining spring is snapped into the outer periphery of the lower connecting part, which is used to limit the axial displacement of the tool holder core in the tool holder housing.

5. The tool changer with a correction structure according to claim 4, characterized in that, The tool changing chamber includes a clearance cavity and several free grippers; the clearance cavity is used for the tool to extend into and form a clearance space; the several free grippers are distributed circumferentially around the top of the clearance cavity, the upper inner diameter of the gripper formed by the combination of the free grippers is adapted to the outer diameter of the tool, and the lower inner diameter of the gripper formed by the combination of the free grippers is smaller than the outer diameter of the tool, which is used to guide the tool to smoothly enter and achieve stable clamping.

6. The tool changer with a correction structure according to claim 5, characterized in that, The bottom end of the clearance cavity is provided with an inner conical surface, which is used to adapt to and accommodate the tip of the cutting tool.

7. The tool changer with a correction structure according to claim 1, characterized in that, The sealing groove is formed on the circumferential surface of the flange section, and the O-ring is disposed between the upper and lower annular protrusions of the sealing groove to limit the excessive deformation of the O-ring in the axial direction and ensure the adhesion between the O-ring and the inner wall of the tool holder housing.

8. The tool changer with a correction structure according to claim 1, characterized in that, The tool changer body also includes a dust cover, which is sleeved on the tool holder core and engaged with a locking protrusion on the outer peripheral wall of the top of the tool holder housing.

9. The tool changer with a correction structure according to claim 1, characterized in that, The tool changer body also includes a spring element, which is sleeved on the outer periphery of the tool holder core and located between the flange section and the lower cavity. The top end of the spring element abuts against the lower end of the flange section, and the bottom end of the spring element abuts against the lower end of the lower cavity, for providing axial elastic restoring force for the tool holder core.

10. The tool changer with a correction structure according to claim 1, characterized in that, The cutting tool is a milling cutter, which is connected to a spindle via a drive mechanism.

Images