Tool holder for storing and locking tool rod in tool magazine and method for unlocking the tool rod

Abstract

To provide a method for unlocking a tool rod, which achieves both stable tool holding and ease of taking-out work.SOLUTION: A tool holder includes a tool cover and tool locking means. The tool cover is used to store a tool rod. The tool locking means has a slide tube and at least one lock component. The slide tube is movably arranged in the tool cover, and has at least one lateral opening. In the lateral opening, an opening wall is constituted of a first mortar-shaped surface and a second mortar-shaped surface, and the first mortar-shaped surface and the second mortar-shaped surface are designed with a system having different inclinations. However, when the lock component contacts the first mortar-shaped surface, a lock is formed in the tool rod, and when external force is applied to the slide tube, the second mortar-shaped surface contacts the lock component according to movement of the slide tube, whereby unlocking is formed in the tool rod.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a configuration for storing a tool rod in a tool magazine of a tool machine, and more particularly to a tool holder for storing and locking a tool rod in a tool magazine, and a method for unlocking the tool rod. [Background technology]

[0002] The tool magazine system of a tool machine is a device that meets the needs of storing and replacing tools during the automated processing process. Common tool magazine systems include a disk-type tool magazine and a chain-type tool magazine. Both of these tool magazines are provided with a plurality of tool covers for inserting tool rods combined with tools having different styles. In order to stabilize the tool rod and prevent the tool rod from being unduly removed from the tool cover, which may result in the tool rod or tool being damaged or causing safety issues during work, a known form is that an engagement structure is installed inside the tool cover. For example, there are Taiwan Patent No. M477934 "Tool Cover Device" and M439538 "Improvement to Tool Cover Structure in Tool Magazine of Processing Machine". The engagement structure of the patented technology is composed of a plurality of springs and a plurality of steel balls. However, the springs push up the steel balls, which come into contact with the tool rod and are inserted into one end of the tool cover. Thus, the function of engagement can be achieved, and the purpose of preventing the tool rod from being unduly removed can be achieved. However, in order to enhance the effect of firmly inserting the tool rod into the tool cover, the conventional engagement structure generally selects a spring with a relatively high rigidity as a material to increase the force of the steel ball that firmly abuts against the tool rod. Therefore, when the operator tries to remove the tool rod from the tool cover and grasp the tool with one hand, it is necessary to apply a relatively large pulling force to overcome the elasticity of the spring. This may cause the operator's hand to be injured by the blade of the tool, and the operator may be injured if the force to remove the tool is not properly controlled.

[0003] Therefore, when taking out the tool, the worker generally inserts an auxiliary tool into the gap between the tool rod and the tool cover and then pulls it to force the tool rod away from the tool cover, which is inconvenient. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, the present invention aims to provide a tool holder that stores and locks a tool rod in a tool magazine, which has the effect of increasing the stability of the inserted tool rod and making it easy to remove the tool rod, and a method for unlocking the tool rod. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention provides a tool holder for storing and locking a tool rod in a tool magazine, and a method for unlocking the tool rod, the tool holder including a tool cover and a tool locking means, the tool cover having a tool storage space capable of storing the tool rod, an axial hole and at least one through hole, the axial hole being axially connected to the tool storage space, and the at least one through hole being radially connected to the axial hole, defining an axis passing through the tool storage space and the center of the axial hole, the tool locking means including a sliding tube and at least one locking component, the sliding tube being installed in the axial hole and movable between a first position and a second position on the axis, the sliding tube having at least one side opening, an opening wall of the at least one side opening including a first die-shaped surface and a second die-shaped surface, ... a first extension line extending from the second die-shaped surface and forming a first angle with the virtual line; and a second extension line extending from the second die-shaped surface and forming a second angle with the virtual line, the first angle is greater than the second angle, the at least one locking part is movably installed in the at least one through-hole of the tool cover, when the sliding tube is located at the first position, the at least one locking part contacts the first die-shaped surface of the sliding tube, and the tool rod is locked and located in the tool storage space, and when the sliding tube is located at the second position, the at least one locking part contacts the second die-shaped surface of the sliding tube, and the tool rod is unlocked and moves away from the tool storage space.

[0006] A method for unlocking the tool rod includes the steps of: applying an external force to the sliding tube, so that the sliding tube moves from the first position to the second position, and a second mortise-shaped surface of the sliding tube presses the at least one locking part radially outward; withdrawing the tool rod relative to the tool holder; and releasing the external force, so that the sliding tube recovers from the second position to the first position. Effect of the Invention

[0007] The effect of the present invention is that since the side opening in the sliding tube is designed to have a first mortar-shaped surface and a second mortar-shaped surface with different inclinations, the purpose of stable locking and easy unlocking can be achieved. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is an exploded view of a tool holder and tool rod according to a preferred embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a tool holder according to the preferred embodiment of the present invention. [Diagram 3] FIG. 3 is a side view of FIG. 2. [Figure 4] 4 is a cross-sectional view taken along line 4-4 in FIG. 3. [Diagram 5] FIG. 2 is a perspective view showing a sliding tube in the tool holder according to the preferred embodiment of the present invention. [Figure 6] FIG. 6 is a top view of FIG. [Figure 7] 7 is a cross-sectional view taken along line 7-7 in FIG. 6. [Figure 8] 8 is a cross-sectional view taken along line 8-8 in FIG. 6. [Figure 9] 9 is a cross-sectional view taken along the line 9-9 in FIG. 7. [Figure 10] FIG. 2 is a schematic diagram showing how a tool rod is locked in the tool holder shown in FIG. 1 . [Figure 11] 11 is a cross-sectional view taken along the line 11-11 in FIG. [Figure 12] 12 is a cross-sectional view taken along line 12-12 in FIG. 11 and a partially enlarged view. [Figure 13] 2 is a schematic diagram showing a state in which the tool rod shown in FIG. 1 is unlocked from the tool holder; FIG. [Figure 14] 14 is a cross-sectional view taken along line 14-14 in FIG. 13. [Figure 15] 15 is a cross-sectional view taken along the line 15-15 in FIG. 14 and a partially enlarged view. [Figure 16]16 is a view similar to FIG. 15 in which a position limiting portion is provided on a body portion of a sliding tube in a tool holder according to another preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In order to more clearly explain the present invention, a detailed description will be given below based on a preferred embodiment with reference to the drawings. A tool holder according to a preferred embodiment of the present invention is a tool magazine for a tool machine, which is used to store and lock a tool rod. The tool magazine may be a disk-type tool magazine or a chain-type tool magazine. The tool rod is for assembling tools used in processing.

[0010] As shown in FIG. 1, a tool holder 100 according to a preferred embodiment of the present invention includes a tool cover 10 and a tool locking means 20, and the tool cover 10 accommodates a tool rod 200. As shown in FIGS. 2 to 4, the tool cover 10 has a front end 10a and a rear end 10b, and has a cone-shaped hole 11 recessed from the front end 10a. The cone-shaped hole 11 is formed by surrounding a tool storage space S with an opening wall. The tool cover 10 has a shaft hole 12 communicating with the tool storage space S in the axial direction at a location adjacent to the rear end 10b, and defines an axis L1 passing through the tool storage space S and the center of the shaft hole 12. The tool cover 10 further has at least one through hole 13 communicating with the shaft hole 12 in the radial direction. The number of through holes 13 according to this embodiment is four, but in other application examples, the number of through holes may be increased or decreased as necessary and is not limited to an even number. The tool cover 10 also forms a convex shoulder 14 at a location inside the tool cover 10 that connects the tool storage space S with the shaft hole 12. One surface of the convex shoulder 14 forms a first abutment surface 15, and the outer surface of the tool cover 10 forms a second abutment surface 16. The first abutment surface 15 and the second abutment surface 16 are located on either side of the through hole 13, respectively, and are installed back-to-back to each other.

[0011] The tool locking means 20 of this embodiment includes a sliding tube 21, at least one locking part 22, at least one push-up part 23, at least one closing part 24, at least one elastic part 25, a gasket 26 and a C-shaped hook part 27, each of which will be described below.

[0012] As shown in Figs. 5 to 9, the sliding tube 21 is a cylinder having a countersunk hole 211 and at least one side opening 212. The countersunk hole 211 has an open end 211a and a closed end 211b at both ends. The at least one side opening 212 communicates with the countersunk hole 211. The sliding tube 21 has a first enclosure 213 formed on the periphery of the open end 211a and extending outward along the radial direction, and has a solid portion 214 located on one side of the closed end 211b of the countersunk hole 211. The sliding tube 21 has a stepped surface 215 and a recessed groove 216 recessed at a location corresponding to the solid portion 214 on the outer circumferential surface. The at least one side opening 212 is the same in number as the number of the through holes 13 in this embodiment, and is located in close proximity to the first enclosure 213. Each side opening 212 has an opening wall formed by machining with a ball end mill, and has a first mortar-shaped surface 212a and a second mortar-shaped surface 212b. As shown in Fig. 7 and Fig. 8, the opening width of the bottom of the side opening 212 corresponding to the first mortar-shaped surface 212a is larger than the opening width corresponding to the second mortar-shaped surface 212b. 9, a virtual line L2 extending from the opening wall of the countersunk hole 211 and parallel to the axis L1, a first extension line L3 extending from the first die-shaped surface 212a and forming a first angle θ1 with the virtual line L2, and a second extension line L4 extending from the second die-shaped surface 212b and forming a second angle θ2 with the virtual line L2 are defined. More specifically, the first extension line L3 passes through an intersection of the first die-shaped surface 212a with the outer tube surface of the sliding tube 21 and the opening wall of the countersunk hole 211, and the second extension line L4 passes through an intersection of the second die-shaped surface 212b with the outer tube surface of the sliding tube 21 and the opening wall of the countersunk hole 211, and the first angle θ1 is greater than the second angle θ2. Preferably, the first angle θ1 is 45 to 80 degrees, and the second angle θ2 is 10 to 40 degrees. In this embodiment, the first die-shaped surface 212a and the second die-shaped surface 212b facing outward are formed by controlling the lifting height and moving path of the tool in the ball end mill, and the first angle θ1 is 77.88 degrees and the second angle θ2 is 25 degrees.9, the first die-shaped surface 212a is a circular arc surface having an R angle, and the second die-shaped surface 212b is an inclined surface that is restricted by the gradual lifting of the ball end mill and is influenced by the moving path. Although the first die-shaped surface has been described as a circular arc surface, in actual application, the ball end mill may form an inclined surface depending on the lifting of the tool and the moving path.

[0013] The sliding tube 21 is installed in the shaft hole 12 so as to be movable along the axis L1, and the axis L1 simultaneously passes through the center of the countersunk hole 211. The first enclosure 213 abuts against the first abutment surface 15, so that the sliding tube 21 does not move away from the tool cover 10 beyond the rear end 10b of the tool cover 10.

[0014] The at least one locking part 22 is movably installed in the through hole 13 of the tool cover 10. The locking parts 22 in this embodiment are made of steel balls, and the number of the locking parts 22 is the same as that of the through holes 13. A locking part 22 is installed in each through hole 13. The at least one pushing-up part 23 is installed in the through hole 13 of the tool cover 10, and the number of the locking parts 22 is the same as that of the through holes 13. In this embodiment, the pushing-up part 23 may be a coil spring. The at least one closing part 24 covers the through hole 13 of the tool cover 10 to prevent the locking part 22 and the pushing-up part 23 from being unduly removed from the through hole 13. In this embodiment, the closing part 24 is a set screw, and a screw hole 13a is made in the upper part of the through hole 13, and the closing part 24 is assembled to the tool cover 10 or separated from the tool cover 10 according to the form of screwing into or retracting from the screw hole 13a.

[0015] The number of the locking parts 22, the pushing-up parts 23, and the closing parts 24 is illustrated as being plural, but the number of the parts actually used may be increased or decreased according to needs. When the locking parts 22, the pushing-up parts 23, and the closing parts 24 are assembled, the closing parts 24 hold the locking parts 22 and the pushing-up parts 23 so that they are positioned in the through hole 13. The pushing-up parts 23 abut against the locking parts 22 and the closing parts 24 at both ends, respectively, and the elastic force of the pushing-up parts 23 pushes the locking parts 22 so that they move toward the center of the sliding tube 21. A part of the locking parts 22 is positioned in the through hole 13, while the other part passes through the side opening 212 of the sliding tube 21 and is exposed to the countersunk hole 211. Thus, the part of the locking parts 22 that passes through the side opening 212 and the part exposed to the countersunk hole 211 are defined as the arc-shaped convex part 22a. The locking part 22 has an arc-shaped protrusion 22a that contacts the first die-shaped surface 212a or the second die-shaped surface 212b. The locking part 22 in this embodiment is a steel ball. Therefore, the arc-shaped protrusion 22a is a part of the steel ball. However, in other applications, the locking part may be configured such that a hemispherical neck is connected to the rod body. In this case, the hemispherical neck constitutes the arc-shaped protrusion. In the case where the locking part 22 is a steel ball, the diameter of the steel ball affects the design of the R angle of the first die-shaped surface 212a, that is, the R angle must not be smaller than half the diameter of the steel ball, and must be at least equal to or larger than the radius of the steel ball. When the sliding tube 21 is applied to the field of a tool holder in a tool machine, it is preferable that the R angle of the first die-shaped surface 212a of the sliding tube 21 is 2 mm to 7 mm. In this embodiment, the diameter of the steel ball is 9.5 mm. The R angle of the first mortar-shaped surface 212a is the radius of a steel ball, which is 4.75 mm. It should be noted that, if the first mortar-shaped surface is used as needed in a configuration with different specifications, the R angle value is not limited to the range of 2 mm to 7 mm.

[0016] The purpose of providing at least one elastic part 25 is to promote the sliding tube 21 to move in a predetermined direction by using its elastic force. In this embodiment, the elastic part 25 is a coil spring, which is provided around the sliding tube 21 and penetrates one end of the shaft hole 12 in the tool cover 10 from the outside. The gasket 26 is provided around the step surface 215 and constitutes a second enclosure defined in the present invention. The C-shaped hook part 27 is provided around the recessed groove 216, so that it restricts the gasket 26 so that it cannot slip out of the sliding tube 21. The elastic part 25 is formed so that when one end of the elastic part 25 abuts against the second abutting surface 16 and the other end of the elastic part 25 abuts against the gasket 26, the elastic force of the elastic part 25 is applied to the gasket 26, pushing the sliding tube 21 outward. When the first enclosure 213 abuts against the first abutment surface 15, the sliding tube 21 cannot move outward any further. If the sliding tube 21 is defined as being in a first position P1 (as shown in FIG. 4) in this state, a part of the arc-shaped convex portion 22a of the locking part 22 contacts the first mortar-shaped surface 212a of the sliding tube 21. Thus, the elastic portion 25 promotes the sliding tube 21 to move to the first position P1 by its elasticity in a normal state where it is not subjected to a compressive force in the opposite direction.

[0017] In the above embodiment, the elastic part 25 is described as a single spring having an inner diameter larger than the outer diameter of the sliding tube 21 and arranged around the outside of the sliding tube 21, but in other embodiments, a plurality of springs having a relatively small diameter may be arranged distributed around the periphery of the sliding tube 21. Similarly, the purpose of pushing the sliding tube 21 outward can be achieved by abutting both ends of the spring against the second abutment surface 16 and the gasket 26.

[0018] The configuration of the tool holder 100 according to the preferred embodiment of the present invention has been described above. Hereinafter, it will be described how the tool holder 100 can stabilize locking and facilitate unlocking when combined with the tool rod 200. The tool rod 200 includes a rod body 201, a neck 202, and a pull head 203, and the front end of the rod body 201 is for fixing and connecting a tool (not shown). The pull head 203 has an outer diameter larger than that of the neck 202. The tool rod 200 is combined with the tool cover 10 by inserting one end having the pull head 203 into the tool storage space S of the tool cover 10.

[0019] 1, 10 to 12, the tool rod 200 is in a tool locking state. At this time, the cone-shaped body 201a of the rod body 201 of the tool rod 200 is inserted and attached into the cone-shaped hole 11. The pulling head 203 of the tool rod 200 passes through the open end 211a and extends into the counterbore 211 of the sliding tube 21. The elastic part 25 is not subjected to a compressive force in the opposite direction and is in an extended state, so that the sliding tube 21 is stopped at the first position P1. At the same time, the locking part 22 is pressed by the pushing-up part 23 so that the arc-shaped protrusion 22a is positioned between the first die-shaped surface 212a of the sliding tube 21 and the inclined surface 203a of the pulling head 203, so that the tool rod 200 is stably positioned in the tool storage space S, and the purpose of locking the tool rod 200 can be achieved. In addition, when the tool is locked, the first mortar-shaped surface 212a has a circular arc surface that is in surface contact with the circular arc protrusion 22a of the locking part 22, which can prevent early breakage due to excessive stress concentration that occurs when the tool is in contact at a single point. In addition, the second mortar-shaped surface 212b does not contact the locking part 22, or contacts the locking part 22 only over a small area.

[0020] 13 to 15, when the tool rod 200 is to be removed from the tool holder 100, an external force F is applied to the sliding tube 21 so that the sliding tube 21 moves along the axis L1 toward the tool storage space S. The locking part 22 can be easily pulled up and pushed outward along the radial direction using the second die-shaped surface 212b with an inclination angle of 25 degrees, so that the locking part 22 leaves the moving path of the pulling head 203. Thus, the object of easily removing the tool rod 200 and easily unlocking is achieved. With this definition, when the locking part 22 leaves the moving path of the pulling head 203, the sliding tube 21 is located at the second position P2 (see FIG. 15). That is, when the sliding tube 21 is located at the second position P2, the elastic part 25 is compressed and the locking part 22 comes into contact with the second die-shaped surface 212b of the sliding tube 21. The tool rod 200 is unlocked and therefore leaves the tool storage space S. The external force F may be generated by pushing with human power, or a lifting device (not shown) may be attached to the rear of a tool holder located at a specific position on the tool machine. The lifting device achieves the purpose of lifting the lifting rod forward to extend the end face 214a of the solid part 214 of the sliding tube 21 by controlling the air pressure or hydraulic pressure, and pushing the sliding tube 21 to move to the tool storage space S. In addition, since the solid part 214 of the sliding tube 21 has a solid structure, it is not deformed even if it is repeatedly pulled up by an external force. Preferably, the solid part 214 is subjected to a heat treatment or a surface hardening treatment in advance to increase the impact resistance and abrasion resistance of the solid part 214.

[0021] When the locking parts 22 are forced to move outward, they compress the push-up parts 23, so that when the external force F is released, the push-up parts 23 immediately release the energy stored by the compression and push the locking parts 22 toward the center of the sliding tube 21. Since the second mortar-shaped surface 212b faces outward and has an inclination, the elasticity of the elastic part 25 helps the sliding tube 21 to move in a direction away from the tool-storing space S. When the first enclosure 213 abuts against the first abutment surface 15 again, the sliding tube 21 returns to the first position P1 as shown in FIG. 4.

[0022] As can be seen from the above description, in locking the tool rod 200 to the tool holder 100, the method of unlocking the tool rod 200 is to apply an external force F to the sliding tube 21, so that the sliding tube 21 moves from the first position P1 to the second position P2, and the second mortar-shaped surface 212b of the sliding tube 21 pushes the locking part 22 radially outward. In this case, the tool rod 200 is easily pulled out relative to the tool holder 100. When the external force F is released, the sliding tube 21 automatically returns from the second position P2 to the first position P1 by releasing the energy stored by the elastic part 25 due to compression, so that the tool rod 200 can be inserted and attached again. Similarly, when the tool rod 200 is to be attached to the tool holder 100, by applying only the external force F to push the sliding tube 21 to the second position P2, the pulling head 203 of the tool rod 200 can be easily inserted into the countersunk hole 211 of the sliding tube 21. When the external force F is released, the tool rod 200 locks the tool locking means 20 again.

[0023] In the above embodiment, the elastic part 25 releases the energy stored by compression and deforms, so that the sliding tube 21 moves from the second position P2 to the first position P1. However, in another embodiment, when the total elastic force of the push-up part 23 is sufficient to firmly abut the locking part 22 against the second mortar-shaped surface 212b having the inclination angle, and the sliding tube 21 is pushed to move to the first position P1, the elastic part 25 is not installed, and the gasket 26 and the C-shaped hook part 27 are not installed, resulting in the configuration shown in FIG. 16. Also, in FIG. 16, a position limiting part 28 is installed at a predetermined position on the outer circumferential surface of the body part of the sliding tube 21A. When the position limiting part 28 abuts against the second abutting surface 16, the sliding tube 21A cannot be moved further into the tool storage space S due to the external force F. This design can prevent the sliding tube 21A from moving too far, and ensure that the locking part 22 and the second mortar-shaped surface 212b are located at an ideal contact position. The position limiting part 28 is a C-shaped hook, which is engaged with the engagement groove 217 on the outer circumferential surface of the sliding tube 21A. Similarly, the position limiting part 28 is applied to the sliding tube 21 having the configuration shown in Figs. 1 to 15 above.

[0024] In addition, the side opening 212 in the sliding tube 21 has a predetermined thickness in a configuration corresponding to the sliding tube 21 for the purpose of designing the first angle θ1 and the second angle θ2 of the first and second mortar-shaped surfaces 212a and 212b, so as to ensure that the thickness is not too shallow and is not broken by the moving locking part 22. In addition, the locking part 22, the pushing-up part 23 and the closing part 24 are placed together in the through hole 13, which has the effect of being quickly detachable and conveniently replaceable for maintenance.

[0025] The above are merely preferred embodiments of the present invention, and any equivalent replacement based on the specification and scope of the present invention is obviously within the scope of the patent of the present invention. [Explanation of symbols]

[0026] 100 Tool Holder 10 Tool Cover 10a front end 10b rear end 11 Conical hole 12 Shaft hole 13 Through hole 13a Screw hole 14 Convex shoulder 15 First contact surface 16 Second contact surface 20 Tool locking means 21 Sliding tube 21A Sliding tube 211 Countersink 211a Open end 211b closed end 212 Lateral opening 212a First molar surface 212b Second molar surface 213 First Enclosure 214 Solid Section 214a End face 215 Stage Surface 216 Groove 217 Engagement groove 22 Lock parts 22a Arc-shaped convex part 23 Push-up section 24 Closing part 25 Elastic part 26 Gasket 27 C-shaped hanging part 28 Position restriction section 200 Tool Rod 201 lot body 201a Cone-shaped body part 202 Neck 203 Head Puller 203a Slope L1 axis L2 Virtual Line L3 First elongation line L4 Second extension line F external force θ1 First angle θ2 Second angle P1 first position P2 2nd position S Tool storage space

Claims

1. A tool cover and a tool locking means are included. the tool cover has a tool storage space capable of storing a tool rod, an axial hole, and at least one through hole, the axial hole communicates with the tool storage space in an axial direction, the at least one through hole communicates with the axial hole in a radial direction, and an axis passing through the tool storage space and the center of the axial hole is defined; the tool locking means includes a sliding tube and at least one locking part, the sliding tube is installed in the axial hole and is movable between a first position and a second position on the axis line, the sliding tube has at least one side opening, and an opening wall of the at least one side opening includes a first die-shaped surface and a second die-shaped surface, in which a virtual line parallel to the axis line, a first extension line extending from the first die-shaped surface and forming a first angle with the virtual line, and a second extension line extending from the second die-shaped surface and forming a second angle with the virtual line are defined, the first angle is greater than the second angle, The at least one locking component is movably mounted in the at least one through hole of the tool cover; When the sliding tube is located at the first position, the at least one locking piece contacts the first mortise surface of the sliding tube, and the tool rod is locked and located in the tool storage space; When the sliding tube is located at the second position, the at least one locking part contacts a second recessed surface of the sliding tube, and the tool rod is unlocked and moves away from the tool storage space.

2. The tool locking means includes at least one closing portion and at least one lifting portion, the at least one closure covers the at least one through hole in the tool cover; 2. A tool holder for storing and locking a tool rod in a tool magazine as described in claim 1, characterized in that the at least one push-up portion is installed in the at least one through hole in the tool cover, and both ends of the at least one push-up portion abut against the at least one closing portion and the at least one locking component, respectively.

3. The tool rod has a pull head at one end, and the at least one locking part has an arc-shaped protrusion, 3. The tool holder for storing and locking a tool rod in a tool magazine according to claim 2, characterized in that, when the sliding tube is located at the first position, a circular arc-shaped convex portion of the at least one locking part contacts a first recess-shaped surface of the sliding tube and the pulling head, and is located between the first recess-shaped surface and the pulling head.

4. the sliding tube has a counterbore located on the axis and having an open end and a closed end; the at least one side opening communicates with the counterbore; 4. The tool holder for storing and locking a tool rod in a tool magazine according to claim 3, wherein said pull head enters and exits said counterbore through said open end.

5. 2. The tool holder for storing and locking a tool rod in a tool magazine according to claim 1, wherein the tool locking means includes at least one elastic portion, and the elastic force of the at least one elastic portion promotes maintaining the sliding tube moved to the first position.

6. The at least one through hole in the tool cover has a first abutment surface and a second abutment surface on both sides, respectively; The sliding tube has a first enclosure at one end and a second enclosure at the other end, 6. The tool holder for storing and locking a tool rod in a tool magazine according to claim 5, characterized in that, when the first enclosure abuts against the first abutment surface, the sliding tube is located at the first position, the at least one elastic portion is arranged around the sliding tube, one end abuts against the second abutment surface, and the other end abuts against the second enclosure.

7. 2. The tool holder for storing and locking a tool rod in a tool magazine according to claim 1, wherein the first angle is between 45 and 80 degrees, and the second angle is between 10 and 40 degrees.

8. 2. The tool holder for storing and locking a tool rod in a tool magazine according to claim 1, wherein the first circular surface of the sliding tube is a circular arc surface having an R angle, the locking part is a steel ball, and the R angle is equal to or greater than a radius of the steel ball.

9. 9. The tool holder for storing and locking a tool rod in a tool magazine according to claim 8, wherein the R angle is in the range of 2 mm to 7 mm.

10. The tool cover has a first abutment surface and a second abutment surface on both sides of the at least one through hole, The sliding tube has a first enclosure at one end, and a position limiting portion is provided on a body portion of the sliding tube; 2. A tool holder for storing and locking a tool rod in a tool magazine according to claim 1, characterized in that, when the first enclosure abuts against the first abutment surface, the sliding tube is located at the first position, the position limiting portion abuts against the second abutment surface, and the sliding tube is located at the second position.

11. A method for unlocking the tool rod based on the tool holder according to claim 1, comprising the steps of: applying an external force to the sliding tube, so that the sliding tube moves from the first position to the second position, and a second recessed surface of the sliding tube pushes the at least one locking component radially outward; withdrawing the tool rod relative to the tool holder; and and recovering the sliding tube from the second position to the first position by releasing the external force.

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