CN120480638B - Anti-rotation cutter sleeve structure suitable for HSKA cutter directional conveying - Google Patents

Abstract

The invention relates to the technical field of knife sleeve structures, in particular to an anti-rotation knife sleeve structure suitable for HSKA knife directional transmission, which comprises an outer sleeve, a knife sleeve and a knife sleeve, wherein the inner sleeve is provided with a mounting hole; the cutter locking mechanism is arranged at the rear end of the mounting hole and comprises a guide sleeve and a cutter locking shaft assembly, the cutter locking end of the guide sleeve stretches into the guide sleeve to form an annular cavity, gaps are formed in contact areas of the outer sleeve and the outer chain link plate, a rotation stopping pin is embedded into a mounting groove formed by the two gaps, the guide sleeve is fixedly arranged with the outer sleeve through a positioning pin, the guide sleeve is connected with the guide sleeve through a connecting bolt to achieve the fixed arrangement with the outer sleeve, and a positioning block used for being embedded into a cutter handle clamping groove is arranged at the cutter locking end of the guide sleeve. According to the invention, the outer sleeve and the outer chain link plate are limited to rotate relatively through the rotation stop pin, and the cutter is prevented from rotating in the cutter sleeve through the arrangement of the positioning pin, the connecting bolt and the positioning block, so that the installation angle of the cutter on the main shaft is not damaged, and the cutter loading precision and stability of the cutter are improved.

Description

Anti-rotation cutter sleeve structure suitable for HSKA cutter directional conveying

Technical Field

The invention relates to the technical field of knife sleeve structures, in particular to an anti-rotation knife sleeve structure suitable for HSKA knife directional transmission.

Background

HSKA as a high-performance conical knife handle system, the tool is widely applied to high-speed machining and high-precision machining scenes. The front end of the milling cutter can be provided with blades of different types, such as milling blades, turning blades and the like, according to the processing requirements, and a HSKA cutter needs to be mounted on a main shaft at a specific angle in the use process so as to ensure the processing precision and stability.

However, when the direction of the existing cutter sleeve chain is required to be changed through the corner, the included angle between the inner chain plate and the outer chain plate can be changed, and the change of the included angle can enable the chain plate to apply lateral force to the outer side of the cutter sleeve. Because the cutter is arranged in the cutter sleeve, the cutter sleeve can slightly rotate around the axis of the cutter sleeve by lateral force, and then the cutter is driven to angularly rotate. Once the cutter rotates, the originally set mounting angle is destroyed, thereby affecting the cutter mounting precision and stability of the cutter on the main shaft. In addition, the center of gravity of HSKA tools is unevenly distributed, which further exacerbates the risk of the tools rotating within the tool pocket.

Disclosure of Invention

The invention aims to solve the technical problem of providing an anti-rotation cutter sleeve structure suitable for HSKA cutter directional conveying, and effectively solves the problem in the background technology.

In order to achieve the purpose, the technical scheme adopted by the invention is that the anti-rotation cutter sleeve structure suitable for HSKA cutter directional conveying comprises the following components:

an outer sleeve, the inside of which is provided with a mounting hole penetrating along the axial direction;

The plug bush is arranged at the front end of the mounting hole;

the cutter locking mechanism is arranged at the rear end of the mounting hole and comprises a guide sleeve and a cutter locking shaft assembly arranged in the guide sleeve, and the cutter locking end of the guide sleeve extends into the insert sleeve to form an annular cavity for accommodating the cutter handle;

The cylindrical surface contact areas of the outer sleeve and the outer link plate are respectively provided with a notch, the two notches are spliced to form a mounting groove, and the axially arranged stop pin is embedded into the mounting groove;

the sleeve is fixedly arranged with the outer sleeve through a positioning pin arranged in the radial direction, and the guide sleeve is connected with the sleeve through a connecting bolt to indirectly realize the fixed arrangement with the outer sleeve;

the cutter locking end of the guide sleeve is provided with a positioning block which is used for being embedded into a clamping groove at the end part of the cutter handle.

Further, the lock cutter shaft assembly comprises a clamping shaft, steel balls, a spring and a disc;

the clamping shaft and the guide sleeve are coaxially arranged, a locking cutter head is arranged at one end of the clamping shaft extending into the guide sleeve, the other end of the clamping shaft is connected with the disc, and the spring is arranged between the guide sleeve and the disc;

the guide sleeve is located on the outer cylindrical surface of the cutter locking end and is provided with a plurality of mounting holes along the circumferential direction, the outer cylindrical surface of the cutter locking head is provided with a cutter loosening groove for accommodating the steel balls, one side wall of the cutter loosening groove close to the end face is obliquely arranged, and the inclined side wall enables the steel balls to enter the mounting holes to lock the cutter handle.

Further, a limiting protrusion is arranged between the connecting flange of the guide sleeve and the plug bush in the mounting hole, and the connecting flange is abutted to the end face of the limiting protrusion.

Further, a plurality of connecting bolts penetrating through the connecting flange and connected with the plug bush form a locking bundle;

The projection range of the outer edge of the locking bundle in the axial direction is smaller than the diameter of the limiting protrusion.

Further, the plug bush comprises a main body part, and an outer flange and an inner flange which are positioned at two ends of the main body part and extend in opposite directions;

the main body part is attached to the inner wall of the mounting hole;

The outer flange is positioned at the front end of the main body part, is formed by bending and extending along the radial direction towards the direction away from the circle center, and is abutted against the end face of the outer sleeve;

The inner flange is positioned at the rear end of the main body part, is formed by bending and extending along the radial direction towards the circle center, and an inner hole of the inner flange is abutted on the outer cylindrical surface of the guide sleeve and is fixedly connected with the guide sleeve through the connecting bolt.

Further, a first positioning groove and a second positioning groove are formed in the circumferential direction of the inner flange;

the first positioning groove penetrates through the positioning pin in the radial direction and is arranged corresponding to the positioning pin, and the second positioning groove penetrates through the positioning pin in the axial direction and is arranged corresponding to the positioning block.

Further, an inner hole of the inner flange is attached to an outer cylindrical surface of the locking knife end of the guide sleeve.

Further, the shaft section of the guide sleeve at the cutter locking end comprises a first shaft section and a second shaft section;

the outer cylindrical surface of the second shaft section is in conical diffusion towards the direction away from the first shaft section, and the inner flange is provided with a conical surface attached to the second shaft section;

The diameter of the first shaft section is smaller than that of the starting end of the second shaft section, the diameter of the starting end of the conical surface is larger than that of the starting end of the second shaft section, and the diameter of the tail end of the conical surface is smaller than that of the tail end of the second shaft section.

Further, the outer cylindrical surface of the outer sleeve comprises a middle shaft section and connecting shaft sections positioned at two ends of the middle shaft section, and the diameter of the middle shaft section is larger than that of the connecting shaft section;

The intermediate shaft section is a driving section of a chain wheel, an optical axis section matched with an inner chain link plate is arranged at the tail end of the connecting shaft section close to the intermediate shaft section, a threaded section is arranged at the position of the connecting shaft section at the end part of the connecting shaft section, and an inner hole of the outer chain link plate is provided with an inner thread matched with the threaded section.

Further, the connecting bolts are arranged in three along the circumferential direction of the plug bush;

The two connecting bolts are symmetrically arranged on two sides of the positioning block, the other connecting bolt and the positioning block are arranged in the same section, and the threaded end part of the connecting bolt is embedded into the other clamping groove at the end part of the cutter handle.

The invention has the beneficial effects that the rotation stopping pin is arranged in the contact area of the outer sleeve and the outer chain link plate, so that the relative rotation between the outer sleeve and the outer chain link plate is limited, the angle of the cutter sleeve can be kept unchanged when the corner of the chain turns, and the circumferential limit of the insert sleeve and the cutter locking mechanism in the outer sleeve can be realized through the arrangement of the positioning pin, the connecting bolt and the positioning block, thereby avoiding the rotation of the cutter in the cutter sleeve, effectively ensuring that the installation angle of the cutter on the main shaft is not damaged, and improving the cutter mounting precision and stability of the cutter on the main shaft.

The cutter sleeve is convenient to detach and replace through the arrangement of the insert sleeve, the adaptability of the cutter sleeve is improved, the maintenance cost of the chain is reduced, the overall stability of the cutter sleeve is improved through the multiple limiting structural design, and the position accuracy of the cutter after conveying is effectively ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of an anti-rotation tool sleeve structure according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the connection of the bushing to the outer link plate in an embodiment of the present invention;

FIG. 3 is a front view of an anti-rotation sleeve structure according to an embodiment of the present invention;

FIG. 4 is a schematic view in section A-A of FIG. 3;

FIG. 5 is a schematic view in section B-B of FIG. 3;

FIG. 6 is an enlarged view of a portion of FIG. 4 at C;

FIG. 7 is an exploded view of the anti-rotation sleeve structure of the present invention;

FIG. 8 is a schematic view of the distribution of the connecting bolts in the limit protrusions;

FIG. 9 is a partial enlarged view at D of FIG. 5;

FIG. 10 is an enlarged view of a portion of FIG. 7 at E;

FIG. 11 is a schematic view of another embodiment of a guide sleeve according to the present invention;

fig. 12 is a partial enlarged view at F of fig. 11.

The numerical control tool comprises the following components of 1, an outer sleeve, 11, a notch, 12, a limiting protrusion, 13, an intermediate shaft section, 14, a connecting shaft section, 141, an optical shaft section, 142, a threaded section, 2, a plug bush, 21, a main body part, 22, an outer flange, 23, an inner flange, 23a, a first positioning groove, 23b, a second positioning groove, 3, a tool locking mechanism, 31, a guide sleeve, 311, a first shaft section, 312, a second shaft section, 32, a tool locking shaft assembly, 32a, an inclined plane, 32b, a tool loosening groove, 321, a clamping shaft, 322, a steel ball, 323, a spring, 324, a disc, 4, a stop pin, 5, a positioning pin, 6, a connecting bolt, 7, a positioning block, A1, an outer link plate, A2 and an inner link plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The anti-rotation cutter sleeve structure suitable for HSKA cutter directional conveying as shown in figures 1 to 12 comprises an outer sleeve 1, a sleeve 2 and a cutter locking mechanism 3, wherein an installation hole penetrating along the axial direction is formed in the outer sleeve 1;

the cylindrical surface contact area of the outer sleeve 1 and the outer link plate A1 is provided with notches 11, the two notches 11 are spliced to form a mounting groove, an axially arranged stop pin 4 is embedded into the mounting groove, the sleeve 2 is fixedly arranged with the outer sleeve 1 through a radially arranged positioning pin 5, the guide sleeve 31 is connected with the sleeve 2 through a connecting bolt 6 to indirectly realize the fixed arrangement with the outer sleeve 1, and a positioning block 7 used for being embedded into a clamping groove at the end part of the cutter handle is arranged at the cutter locking end of the guide sleeve 31.

When the tool sleeve is preassembled, firstly, the insert sleeve 2 is inserted into the mounting hole from the front end of the outer sleeve 1, the outer diameter of the insert sleeve 2 is matched with the inner diameter of the mounting hole of the outer sleeve 1 to realize tight fit, at the moment, the positioning pin 5 penetrates through the radial hole of the outer sleeve 1 to extend into the corresponding hole of the insert sleeve 2 to limit the rotation of the insert sleeve 2 in the circumferential direction, then the cutter locking shaft assembly 32 and the positioning block 7 are arranged on the guide sleeve 31 to form a combined body of the cutter locking mechanism 3, the combined body is inserted into the mounting hole from the rear end of the outer sleeve 1, the end part of the guide sleeve 31 extends into the insert sleeve 2, is in threaded connection with the annular cavity formed by the inner wall of the insert sleeve 2, and the guide sleeve 31 is fixedly connected with the mounting hole of the insert sleeve 2 by utilizing the connecting bolt 6, so that the guide sleeve 31 and the outer sleeve 1 are indirectly fixedly arranged, after the assembly of the guide sleeve 31 is completed, the inner and outer link plates A1 are arranged at two ends of the guide sleeve 31, the notch 11 on the outer link plates A1 are processed in advance, the outer link plates A1 are only required to be inserted into the mounting grooves formed by the guide sleeve 1, the guide sleeve 4 are required to be inserted into the mounting grooves formed in pairs, the inner and the guide sleeve 1 and the outer link plates A can be tightly attached to the outer link plates A1 in sequence, and the outer link plates A1 can be tightly arranged by limiting the notch A1 in the axial direction, and the outer link plates A1 can be correspondingly arranged in the step 1, and the step of the guide clamp ring 11 can be correspondingly and correspondingly arranged in the step 1, and can be assembled in the step 4 and can be prevented. It should be noted that the front end of the mounting hole refers to the mounting end of the cutter, and the rear end of the mounting hole refers to the driving end of the loose cutter.

In the conveying process of the cutter sleeve chain, when the cutter sleeve passes through a corner, the outer chain link plate A1 positioned at the conveying front end of the cutter sleeve rotates around the cutter sleeve axis, at the moment, the rotation stopping pin 4 can effectively limit the relative rotation between the outer sleeve 1 and the outer chain link plate A1, so that the cutter sleeve can not change in angle due to the rotation of the outer chain link plate A1, the inner chain link plate A2 can realize the steering of the chain at the corner by utilizing the relative rotation between the cutter sleeve and the cutter sleeve, after the steering is finished, the inner chain link plate A1 and the outer chain link plate A1 are restored to a parallel state, and the cutter sleeve itself keeps unchanged with the position of the outer chain link plate A1 due to the action of the rotation stopping pin 4, so that the installation angle of a cutter is effectively protected.

According to the invention, the anti-rotation pin 4 is arranged in the contact area of the outer sleeve 1 and the outer link plate A1, so that the relative rotation between the outer sleeve 1 and the outer link plate A1 is limited, the angle of the cutter sleeve can be kept unchanged when the corner of the chain turns, and the sleeve 2 and the cutter locking mechanism 3 in the outer sleeve 1 can be limited in the circumferential direction through the arrangement of the positioning pin 5, the connecting bolt 6 and the positioning block 7, so that the cutter is prevented from rotating in the cutter sleeve, the installation angle of the cutter on the main shaft is effectively prevented from being damaged, and the cutter loading precision and stability on the main shaft are improved.

The invention is convenient to detach and replace by arranging the insert sleeve 2, improves the adaptability of the cutter sleeve, reduces the maintenance cost of the chain, increases the overall stability of the cutter sleeve by adopting the multiple limiting structural design, and effectively ensures the position accuracy of the cutter after being transmitted.

In the invention, a cutter locking shaft assembly 32 comprises a clamping shaft 321, steel balls 322, a spring 323 and a disc 324, wherein the clamping shaft 321 is coaxially arranged with a guide sleeve 31, one end of the clamping shaft 321 extending into the guide sleeve 31 is provided with a cutter locking head, the other end of the clamping shaft is connected with the disc 324, the spring 323 is arranged between the guide sleeve 31 and the disc 324, a plurality of mounting holes are formed in the outer cylindrical surface of the guide sleeve 31, which is positioned at the cutter locking end, in the circumferential direction, a cutter loosening groove 32b for accommodating the steel balls 322 is formed in the outer cylindrical surface of the cutter locking head, and a side wall, close to the end surface, of the cutter loosening groove 32b is obliquely arranged, and the oblique side wall enables the steel balls to enter the mounting holes to lock a cutter handle.

Specifically, a stepped hole is formed in the guide sleeve 31, a locking cutter head of the clamping shaft 321 is arranged in the stepped hole, the clamping shaft 321 is limited to generate displacement along the axial direction under the action of the spring 323, in a cutter locking state, the spring 323 is in a compressed state, the reaction force is enough to control the steel ball 322 to lock the cutter handle, an external force overcomes the reaction force of the spring 323 to drive the clamping shaft 321 to move to loosen the cutter, after the cutter is loosened, the cutter handle is inserted into the annular cavity, the external force is cancelled, the clamping shaft 321 moves under the reaction force of the spring 323, the steel ball 322 is pushed into the mounting hole of the guide sleeve 31 by the inclined surface 32a of the locking cutter head in the moving process, the part of the steel ball 322 protruding out of the outer cylindrical surface of the clamping shaft 321 is abutted against the cutter locking inclined surface 32a of the cutter handle, so that cutter locking action is realized, and when the cutter is needed to loosen the cutter, the clamping shaft 321 is driven by the external force, the steel ball 322 which is not supported by the cutter locking cutter head inclined surface 32a falls into the cutter loosening groove 32b, so that cutter action is realized. By the floating design of the clamping shaft 321, a one-key unclamping can be realized in combination with the unclamping groove 32b on the lock bit.

In the invention, when the cutter locking end of the guide sleeve 31 locks the cutter on the cutter handle, the distance between the cutter locking position and the cutter sleeve end surface needs to be matched with the size of the cutter handle to ensure the stability of cutter locking, in a preferred structure, a limiting protrusion 12 is arranged between a connecting flange of the guide sleeve 31 and the plug bush 2 in a mounting hole, and the connecting flange is abutted on the end surface of the limiting protrusion 12.

In the processing process of the outer sleeve 1, the processing precision between the limiting bulge 12 and the end surface is controlled according to the size of the cutter handle, and in the mounting process, the limiting bulge 12 is only required to be used as a positioning reference, so that a definite assembly position is provided for the cutter locking shaft assembly 32, the insertion sleeve 2 and the cutter locking shaft assembly 32 can be accurately mounted in place, assembly errors are avoided, and the positioning precision of a cutter in the cutter sleeve is improved.

On the basis of the embodiment, a locking bundle is formed by penetrating through a plurality of connecting bolts 6 which are in threaded connection with the plug bush 2 through the connecting flange, and the projection range of the outer edge of the locking bundle in the axial direction is smaller than the diameter of the limiting protrusion 12, so that the plurality of connecting bolts 6 can be connected with the plug bush 2 under the condition that the connecting bolts are not contacted with the limiting protrusion 12, the field installation difficulty is reduced, and the influence of the machining error of the limiting protrusion 12 on the positioning precision of the guide sleeve 31 is avoided. In addition, the abutting surface of the limiting bulge 12 and the connecting flange is a conical surface, the guide sleeve 31 is centered, and the coaxial precision of the guide sleeve 31 and the cutter in the plug bush 2 is ensured, so that the cutter locking stability is improved.

In the preferred embodiment of the invention, the plug bush 2 comprises a main body part 21, an outer flange 22 and an inner flange 23 which are positioned at two ends of the main body part 21 and extend in opposite directions, wherein the main body part 21 is attached to the inner wall of a mounting hole, the outer flange 22 is positioned at the front end of the main body part 21, is formed by bending and extending along the radial direction away from the center of a circle and is abutted against the end face of the outer sleeve 1, the inner flange 23 is positioned at the rear end of the main body part 21 and is formed by bending and extending along the radial direction towards the center of the circle, and an inner hole of the inner flange 23 is abutted against the outer cylindrical surface of the guide sleeve 31 and is fixedly connected with the guide sleeve 31 through a connecting bolt 6.

The two ends of the insert 2 are positioned by the reversely extending outer flange 22 and the inner flange 23, the mounting position of the insert 2 in the outer sleeve 1 is further limited, the insert 2 positions the cutter handle by utilizing the conical inner hole of the main body part 21 and the end face of the outer flange 22, direct contact between the outer sleeve 1 and a cutter is avoided, the processing difficulty of the outer sleeve 1 is reduced, in addition, the detachable insert 2 structure only needs to replace the insert 2 when the cutter handles of cutters with different specifications are faced, the detachment and replacement of the whole chain are avoided, the universality of the cutter sleeve is improved, the arrangement of the inner flange 23 increases the locking area of the connecting bolt 6 on the insert 2, the connection strength between the insert 2 and the guide sleeve 31 is further enhanced, and the insert 2 is ensured not to loosen in the cutter pulling process.

As shown in fig. 4, 5 and 10, in the present invention, a first positioning groove 23a and a second positioning groove 23b are provided in the circumferential direction of the inner flange 23, the first positioning groove 23a penetrates in the radial direction and is provided corresponding to the positioning pin 5, and the second positioning groove 23b penetrates in the axial direction and is provided corresponding to the positioning block 7. The arrangement of the first positioning groove 23a and the second positioning groove 23b provides a clear assembly reference for the plug bush 2, so that the plug bush 2 can be aligned quickly and accurately during assembly, the position consistency of the cutter during each assembly is ensured, the assembly error is reduced, and the assembly efficiency and quality are improved.

In the invention, the coaxial positioning precision of the guide sleeve 31 in the outer sleeve 1 depends on the positioning of the connecting flange and the mounting hole of the outer sleeve 1, however, due to the limited width of the connecting flange, the centering of the cutter locking end of the guide sleeve 31 cannot be realized in the contact area with the mounting hole, once the axis of the guide sleeve 31 is inclined, the positioning precision and stability of the cutter in the cutter sleeve are seriously affected, so that in the preferred scheme, the inner hole of the inner flange 23 is attached to the outer cylindrical surface of the cutter locking end of the guide sleeve 31. The inner hole and the outer cylindrical surface are processed with high precision, and the tolerance of the inner hole and the outer cylindrical surface is reasonably controlled, so that the tight fitting is ensured, and the centering effect is not lost due to over-tightening or over-loosening, thereby realizing the supporting centering of the locking knife end. In addition, the contact surface of the inner flange 23 and the guide bush 31 is made of a material having high strength and high wear resistance, and is subjected to a surface treatment such as hard chrome plating or nitriding treatment to improve the surface hardness and wear resistance. In the assembly process, the positioning block 7 is arranged to help quick positioning, and the fitting condition of the inner hole and the outer cylindrical surface is checked after the assembly is completed, so that no obvious gap or looseness exists between the inner hole and the outer cylindrical surface.

In the invention, the inner flange 23 and the guide sleeve 31 are tightly attached, the guide sleeve 31 needs to be accurately aligned with the inner hole of the inner flange 23 during installation, the installation difficulty of the guide sleeve 31 is increased, the assembly efficiency is lower, in addition, when the end part of the guide sleeve 31 passes through the inner flange 23, the abrasion of the shaft section position of the steel ball 322 is caused, and the locking stability of a cutter is affected, therefore, is another preferable scheme, in order to solve the problem, the shaft section of the guide sleeve 31 at the locking end comprises a first shaft section 311 and a second shaft section 312, a plurality of steel balls 322 are arranged on the circumference of the first shaft section 311, the outer cylindrical surface of the second shaft section 312 is in conical diffusion towards the direction far away from the first shaft section 311, the inner flange 23 is provided with a conical surface attached with the second shaft section 312, the diameter of the first shaft section 311 is smaller than the starting end diameter of the second shaft section 312, the starting end diameter of the conical surface is larger than the starting end diameter of the second shaft section 312, and the tail end diameter of the conical surface is smaller than the tail end diameter of the second shaft section 312.

The inner hole wall of the inner flange 23 is a first conical surface, the second shaft section 312 is a second conical surface, the outer cylindrical surface of the inner flange 23 at the bending position is obliquely arranged and gradually gathered inwards along the axial direction towards the limit bulge 12, and when the outer flange 22 is abutted against the end part of the outer sleeve 1, a certain gap still exists between the end surface of the inner flange 23 and the limit bulge 12.

In the assembly process, the diameter of the first shaft section 311 is smaller than that of the starting end of the second conical surface, and the first shaft section 311 cannot directly rub with the inner hole of the inner flange 23 when penetrating through the inner flange 23, so that the first shaft section 311 is effectively prevented from being worn. Along with the continuous screwing-in of the connecting bolt 6, the plug bush 2 is pulled along the axial direction, the included angle between the inclined surface 32a of the inner flange 23 and the inner wall of the outer sleeve 1 is gradually reduced, and meanwhile, the contact area of the conical surface of the inner flange 23 and the guide sleeve 31 moves until the outer flange 22 abuts against the end face of the outer sleeve 1, and the locking and fixing of the guide sleeve 31 and the plug bush 2 are completed. It should be noted that, in the screwing process, the plurality of connecting bolts 6 can enter from one end of the plug bush 2 through the depth fixing sleeve or the depth gauge, so as to control the screwing depth, thereby ensuring that the contact point of the inner flange 23 and the guide sleeve 31 is positioned in the same radial section, and ensuring centering accuracy.

The connecting bolts 6 pull the inner flange 23, so that the conical surface of the inner flange 23 is in contact with the second shaft section 312 of the guide sleeve 31, accurate centering of the guide sleeve 31 is achieved, uniform gaps of annular grooves at the cutter locking end along the circumferential direction are effectively ensured, positioning accuracy of the cutter handle is improved, and cutter locking stability of the cutter is effectively ensured.

When the lateral force exceeds the bearing range of the rotation stop pin 4, the rotation stop pin 4 may be deformed or damaged, so that the rotation of the cutter sleeve cannot be effectively prevented, in this case, preferably, the outer cylindrical surface of the outer sleeve 1 includes an intermediate shaft section 13 and connecting shaft sections 14 located at two ends of the intermediate shaft section 13, the diameter of the intermediate shaft section 13 is larger than that of the connecting shaft section 14, the intermediate shaft section 13 is a driving section of a sprocket, an optical axis section 141 matched with the inner link plate A2 is arranged at the end of the connecting shaft section 14 close to the intermediate shaft section 13, a threaded section 142 is arranged at the end shaft section of the connecting shaft section 14, and an inner hole of the outer link plate A1 is provided with an inner thread matched with the threaded section 142. The outer link plate A1 is connected with the outer sleeve 1 through threads and is matched with the anti-rotation pin 4, so that the connection stability between the outer link plate A1 and the outer sleeve 1 is improved,

The three connecting bolts 6 are arranged along the circumferential direction of the plug bush 2, the design of the multipoint connecting bolts 6 enhances the connection strength between the guide sleeve 31 and the plug bush 2, the two connecting bolts 6 are symmetrically arranged on two sides of the positioning block 7 and used for balancing the connecting guide sleeve 31 and the plug bush 2 to ensure the stability of the structure, the other connecting bolt 6 and the positioning block 7 are arranged in the same section, the threaded end part of the connecting bolt is embedded into the other clamping groove at the end part of the cutter handle, and the connecting bolt and the positioning block 7 limit the circumference of the cutter handle together, so that the cutter handle is prevented from rotating in the annular cavity, and a better anti-rotation effect is realized.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. Anti-rotation tool sleeve structure suitable for HSKA cutter directional transmission, characterized by comprising:

an outer sleeve, the inside of which is provided with a mounting hole penetrating along the axial direction;

The plug bush is arranged at the front end of the mounting hole;

the cutter locking mechanism is arranged at the rear end of the mounting hole and comprises a guide sleeve and a cutter locking shaft assembly arranged in the guide sleeve, and the cutter locking end of the guide sleeve extends into the insert sleeve to form an annular cavity for accommodating the cutter handle;

The cylindrical surface contact areas of the outer sleeve and the outer link plate are respectively provided with a notch, the two notches are spliced to form a mounting groove, and the axially arranged stop pin is embedded into the mounting groove;

the sleeve is fixedly arranged with the outer sleeve through a positioning pin arranged in the radial direction, and the guide sleeve is connected with the sleeve through a connecting bolt to indirectly realize the fixed arrangement with the outer sleeve;

the cutter locking end of the guide sleeve is provided with a positioning block which is used for being embedded into a clamping groove at the end part of the cutter handle;

A limiting protrusion is arranged between a connecting flange positioned in the guide sleeve and the plug bush in the mounting hole, and the connecting flange is abutted to the end face of the limiting protrusion;

a plurality of connecting bolts penetrating through the connecting flange and connected with the plug bush form a locking bundle;

the projection range of the outer edge of the locking bundle in the axial direction is smaller than the diameter of the limiting protrusion;

The plug bush comprises a main body part, and an outer flange and an inner flange which are positioned at two ends of the main body part and extend in opposite directions;

the main body part is attached to the inner wall of the mounting hole;

The outer flange is positioned at the front end of the main body part, is formed by bending and extending along the radial direction towards the direction away from the circle center, and is abutted against the end face of the outer sleeve;

The inner flange is positioned at the rear end of the main body part, is formed by bending and extending along the radial direction towards the center of a circle, and an inner hole of the inner flange is abutted on the outer cylindrical surface of the guide sleeve and is fixedly connected with the guide sleeve through the connecting bolt;

a first positioning groove and a second positioning groove are formed in the circumferential direction of the inner flange;

the first positioning groove penetrates through the positioning pin in the radial direction and is arranged corresponding to the positioning pin, and the second positioning groove penetrates through the positioning pin in the axial direction and is arranged corresponding to the positioning block.

2. The anti-rotation cutter sleeve structure suitable for HSKA cutter directional transfer according to claim 1, wherein the cutter shaft assembly comprises a clamping shaft, steel balls, springs and discs;

the clamping shaft and the guide sleeve are coaxially arranged, a locking cutter head is arranged at one end of the clamping shaft extending into the guide sleeve, the other end of the clamping shaft is connected with the disc, and the spring is arranged between the guide sleeve and the disc;

the guide sleeve is located on the outer cylindrical surface of the cutter locking end and is provided with a plurality of mounting holes along the circumferential direction, the outer cylindrical surface of the cutter locking head is provided with a cutter loosening groove for accommodating the steel balls, one side wall of the cutter loosening groove close to the end face is obliquely arranged, and the inclined side wall enables the steel balls to enter the mounting holes to lock the cutter handle.

3. The anti-rotation cutter sleeve structure suitable for HSKA cutter directional transmission according to claim 1, wherein the inner hole of the inner flange is attached to the outer cylindrical surface of the cutter locking end of the guide sleeve.

4. The anti-rotation cutter sleeve structure suitable for HSKA cutter directional transmission according to claim 1, wherein the shaft section of the guide sleeve at the cutter locking end comprises a first shaft section and a second shaft section;

the outer cylindrical surface of the second shaft section is in conical diffusion towards the direction away from the first shaft section, and the inner flange is provided with a conical surface attached to the second shaft section;

The diameter of the first shaft section is smaller than that of the starting end of the second shaft section, the diameter of the starting end of the conical surface is larger than that of the starting end of the second shaft section, and the diameter of the tail end of the conical surface is smaller than that of the tail end of the second shaft section.

5. The anti-rotation cutter sleeve structure suitable for HSKA cutter directional transmission according to claim 1, wherein the outer cylindrical surface of the outer sleeve comprises a middle shaft section and connecting shaft sections positioned at two ends of the middle shaft section, and the diameter of the middle shaft section is larger than that of the connecting shaft section;

The intermediate shaft section is a driving section of a chain wheel, an optical axis section matched with an inner chain link plate is arranged at the tail end of the connecting shaft section close to the intermediate shaft section, a threaded section is arranged at the position of the connecting shaft section at the end part of the connecting shaft section, and an inner hole of the outer chain link plate is provided with an inner thread matched with the threaded section.

6. The anti-rotation tool sleeve structure suitable for HSKA tool directional delivery according to claim 1, wherein the connecting bolts are arranged in three along the circumferential direction of the sleeve;

The two connecting bolts are symmetrically arranged on two sides of the positioning block, the other connecting bolt and the positioning block are arranged in the same section, and the threaded end part of the connecting bolt is embedded into the other clamping groove at the end part of the cutter handle.