Axial quick-moving chuck

Abstract

The present invention provides an axial quick-moving chuck, comprising a locking cylinder, a locking assembly and a clamping assembly; a clamping claw mounting seat is provided at the front end of the locking cylinder, a locking groove group with a serrated cross section is provided on the upper and lower sides, an outer sliding plane is provided on the left and right sides, and a tapered hole surface is provided on the rear end; three clamping claws that can move in the radial direction are evenly arranged on the front end surface of the clamping claw mounting seat along the circumferential direction; the locking assembly comprises a stop seat, and stop claws that can be locked with the locking groove are symmetrically arranged on the upper and lower sides of the inner ring of the stop seat, and a slide cylinder is fixedly connected in the stop seat, and a fastening sleeve rotatably connected to the slide cylinder is installed on the front end of the slide cylinder; the clamping assembly comprises a chuck body. The present invention can control the clamping claw to quickly adapt to the clamping of shaft parts or tools of different diameters by axially moving the chuck body, thereby greatly improving the use efficiency of the chuck, and correspondingly improving the production efficiency, reducing the production cost and labor intensity, and meeting the pursuit of efficiency in modern production.

Description

Technical Field

[0001] The invention relates to the technical field of chucks, in particular to an axially rapid-moving chuck. Background Art

[0002] In the field of mechanical processing and automation machinery, the clamping of shaft parts or tools usually requires the use of various chucks. The common ones we have are standard fixtures such as drill chucks and chucks. This type of fixture is inefficient when clamping tools of different diameters. Especially when the diameter of the clamped tool changes greatly, it takes a long time to rotate the clamp to adjust the clamp to the required clamping range before the tool can be clamped. For example, when the tailstock chuck is used to clamp the tool on the lathe to perform a series of operations such as center hole drilling, drilling, reaming, boring, and tapping on the machined parts. The tailstock chuck must first clamp the center drill to drill the center hole, then change the drill bit to drill, then change the reamer to reaming, and finally change to the reamer to reaming, and sometimes change the tap to tap the hole. Since the clamping diameters of tools such as center drills, drill bits, reamer drills, reamer, and taps are different, when the tailstock chuck is used to clamp these tools on the lathe, the chuck needs to be frequently screwed to achieve the appropriate clamping diameter. In addition, since different tools have different lengths, when changing different tools, it is necessary to frequently loosen and tighten and drag the tailstock to adapt to the length requirements of different tools. In order to improve the efficiency of changing and clamping different tools and reduce labor intensity, it is necessary to design a quick chuck that can clamp tools of different diameters and lengths. Summary of the invention

[0003] To solve the above problems, the present invention discloses an axial quick-moving chuck, which can control the jaws to quickly adapt to the clamping of shaft parts or tools of different diameters by axially moving the chuck body, thereby greatly improving the use efficiency of the chuck and correspondingly improving the production efficiency, reducing production costs and labor intensity, and meeting the pursuit of efficiency in modern production.

[0004] The specific plan is as follows:

[0005] An axial quick-moving chuck, characterized in that it includes a locking cylinder, a locking assembly and a clamping assembly; the locking cylinder is a cylindrical structure, a clamping claw mounting seat is provided at its front end, locking groove groups with sawtooth-shaped cross-sections are symmetrically provided on the upper and lower sides for quickly positioning the locking claws, and external sliding planes are symmetrically provided on the left and right sides for positioning the slide cylinder so that the slide cylinder can only move axially against the sliding plane, and a tapered hole surface for mounting on a machine tool is provided inside the rear end, and the clamping claw mounting seat is a circular ring structure, and three clamping claws that can move in their radial direction are evenly assembled on its front end surface in the circumferential direction. The locking groove group includes locking grooves evenly distributed along the axial direction of the locking cylinder; the locking assembly includes a stop seat that can slide back and forth and is sleeved outside the locking cylinder, the stop seat is a circular ring structure, and the upper and lower sides of its inner ring are symmetrically equipped with stop claws that can cooperate with the locking grooves to lock, and a slide cylinder is also fixedly connected to the stop seat, the front end of the slide cylinder extends out of the stop seat, and a fastening sleeve rotatably connected to it is installed outside the front end; the clamping assembly includes a chuck body that is sleeved outside the clamping claw and can control the clamping claw to move along the radial direction of the locking cylinder, and the rear end of the chuck body is threadedly connected to the fastening sleeve.

[0006] As a further improvement of the present invention, three bosses are evenly distributed along the circumferential direction on the front end surface of the clamp mounting seat, and a clamp mounting groove is opened backward from the middle part of the front end of the boss. The clamp mounting groove is a strip groove arranged along the radial direction of the clamp mounting seat, and its two ends are respectively connected with the inner and outer sides of the boss. A limit sliding pin is installed in the clamp mounting groove, and a limit sliding pin hole for installing the limit sliding pin is symmetrically opened on the side of the boss.

[0007] As a further improvement of the present invention, the upper and lower sides of the inner ring of the stop seat are symmetrically provided with slots, and the front sides of the slots are respectively connected with the front and rear end surfaces of the stop seat, the middle part of the stop claw is swingably set in the slot through a fixing pin, and a penetrating fixing pin hole is provided at the corresponding position of the fixing pin on the side surface of the stop seat, and the side surface of the stop seat is also provided with release nail holes symmetrically arranged up and down, and threaded holes symmetrically arranged up and down, the threaded holes and the release nail holes are both connected with the corresponding slots, and the threaded holes are placed on the front side of the release nail holes, a spring seat is threadedly connected in the threaded hole, and a release nail is installed in the release nail hole.

[0008] As a further improvement of the present invention, the stopping claw is a rod-shaped structure, and a supporting protrusion is provided on its outer side surface, the top surface of the supporting protrusion is arc-shaped, and a mounting pin hole matching the fixing pin is provided on the side surface, a spring groove is provided on the outer side of the front end of the stopping claw, and a claw head is provided on the inner side of the front end, the spring groove is placed on the front side of the supporting protrusion, and a spring is installed in the spring groove, and the two ends of the spring are respectively connected to the spring seat and the spring groove, and the claw head is a right-angled triangle block, and a right-angled surface is connected to the inner side of the stopping claw, and the other right-angled surface faces the front side. In the natural state, the spring presses the front end of the stopping claw tightly in the locking groove of the locking cylinder, and the inclined surface of the claw head can ensure that the chuck body and other parts can smoothly move axially backward along the locking groove of the locking cylinder, thereby quickly completing the radial contraction action of the clamping claw.

[0009] As a further improvement of the present invention, the release pin is a round rod-shaped structure, with a ball head at its inner end, a first external thread at the inner end, and a limiting column at its outer end. The ball head abuts against the outer side of the rear end of the locking claw, and the release pin hole is provided with a first internal thread matched with the first external thread. The limiting column is larger than the release pin hole. When in use, the first external thread is screwed into the release pin hole of the stop seat until the first external thread passes through the first internal thread of the release pin hole. In this way, the release pin can remain in a free state in the release pin hole and will not fall out of the release pin hole. The ball head of the release pin can ensure that it maintains contact with the surface of the locking claw without interfering with the movement of the locking claw.

[0010] As a further improvement of the present invention, the slide cylinder is a stepped cylindrical structure with a larger front and a smaller rear, and is composed of a front slide column and a rear slide column arranged front and rear. A waist-shaped hole matched with the locking cylinder is provided in the middle part of the slide cylinder along the axial direction, and the front and rear sides thereof are inner sliding planes, and the inner sliding plane is in sliding contact with the outer sliding plane. An outer step is provided on the outer side of the front slide column, and the rear side of the front slide column is fixedly connected to the stop seat by bolts. Square holes connected to the waist-shaped hole in the middle are symmetrically provided on the upper and lower sides of the rear slide column, and the square holes are matched with the claw head. The inner sliding plane is used to slide with the outer sliding plane of the locking cylinder, which can not only ensure the axial sliding of the slide cylinder on the locking cylinder, but also ensure that the slide cylinder does not rotate. The two symmetrical square holes on the cylindrical surface of the slide cylinder are avoidance holes, so that the stopping claw installed on the stop seat can act on the locking groove of the locking cylinder through the square holes.

[0011] As a further improvement of the present invention, four screw holes matching the bolts are evenly distributed along the circumferential direction on the end face of the stop seat, and four threaded holes matching the bolts are evenly distributed along the circumferential direction on the rear end face of the front sliding column, wherein the positions of the four threaded holes correspond to the positions of the four screw holes respectively.

[0012] As a further improvement of the present invention, the fastening sleeve is composed of a front sleeve and a rear sleeve arranged in front and back, the front sleeve is a circular ring structure, the outer side of which is provided with a second external thread, and the inner side is provided with an internal step that matches the outer step of the slide cylinder, the front sleeve is rotatably connected to the front slide column of the slide cylinder, the rear sleeve is a barrel-shaped structure with an opening at the rear end outside, and a through hole that matches the rear end of the front slide column is opened in the middle of the front end, and the rear sleeve is rotatably arranged outside the stop seat, and the outer side of the rear sleeve is evenly distributed with knurled grooves along the circumferential direction, and the knurled grooves can facilitate manual rotation and tightening operations.

[0013] As a further improvement of the present invention, the clamp is a right-angled trapezoidal piece with the inclined surface facing the outer side of the front end. A boss is provided on the inclined edge of the clamp, and a strip-shaped sliding hole is opened on the rear side. The strip-shaped sliding hole is perpendicular to the axis of the locking cylinder and limits the limiting sliding pin therein.

[0014] As a further improvement of the present invention, the chuck body is composed of a chuck and a connecting tube arranged in front and back. The chuck is a trumpet-shaped structure with a small front and a large rear. Its inner conical surface is adapted to the inclined surface of the clamping jaw, and three T-shaped bevel grooves are evenly distributed along the circumferential direction on the inner side surface of the chuck. The T-shaped bevel grooves are arranged along the axial direction of the chuck body and are adapted to the boss of the clamping jaw. The boss of the clamping jaw can be slidably placed in the T-shaped bevel grooves. The connecting tube is a cylindrical structure, and its inner side is provided with a second internal thread adapted to the second external thread.

[0015] The beneficial effects of the present invention are:

[0016] 1. The overall structure is compact, the parts are simple in structure, easy to process and ensure accuracy;

[0017] 2. Easy to use. When closing the jaws, you only need to directly drag the chuck body or the stop seat and other parts. The internal tooth groove structure will automatically cooperate with the chuck body to slide, and under the action of the T-slot, the jaws will automatically close;

[0018] 3. The jaws can be separated quickly. When the jaws are separated, just press the symmetrically arranged release pins with two fingers at the same time to separate the internal tooth groove structures from each other, and then directly push the chuck body or stop seat and other parts to automatically separate the jaws;

[0019] 4. The radial opening and closing action of the clamping jaws is controlled by the axially moving chuck body, which has a unique structure and effectively realizes the rapid opening and closing of the clamping jaws;

[0020] 5. When you want to further clamp the tool, just rotate the clamping sleeve slightly when the jaws are in contact with the outer diameter of the tool and the teeth are engaged. The clamping tool can be clamped tightly under the action of the engaged threads.

[0021] 6. The sliding planes of the locking cylinder and the slide cylinder cooperate with each other, so that when the fastening sleeve is rotated for fine adjustment, the slide cylinder will not rotate with it, and the clamping force of the clamping jaws can be forced and guaranteed to be further enhanced;

[0022] 7. When the chuck is working, the axial thrust is directed backwards, so the chuck body, stop claw and other parts can only apply force backwards, so that the chuck can always bite the tool and prevent it from loosening;

[0023] 8. Since the locking cylinder of the chuck is hollow, it can be well adapted to clamping longer shaft tools and can control the length of the shaft tools extending out of the chuck, thereby effectively increasing the strength of the tool when in use and bringing convenience to the use of the tool;

[0024] 9. The locking claw will automatically engage with the tooth groove of the locking cylinder under the action of the spring, and there is no need to worry about natural loosening;

[0025] 10. The chuck has simple movements and strong expandability. It can be customized according to production requirements and equipped on automated production equipment, providing a solution for production occasions where frequent replacement of clamped parts is required;

[0026] 11. Improved clamping efficiency and clamping length range, reduced production time and labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the present invention.

[0028] Figure 2 It is a cross-sectional view of the clamping jaws of the present invention when they are opened to the maximum position.

[0029] Figure 3 It is a cross-sectional view of the clamping jaws of the present invention when they are clamped to a minimum position.

[0030] Figure 4 It is a schematic diagram of the locking cylinder in the present invention.

[0031] Figure 5 It is a schematic diagram of the stop seat in the present invention.

[0032] Figure 6 It is a schematic diagram of the stop claw in the present invention.

[0033] Figure 7 It is a schematic diagram of releasing the nail in the present invention.

[0034] Figure 8 It is a schematic diagram of the slide barrel in the present invention.

[0035] Fig. 9 It is a schematic diagram of the fastening sleeve in the present invention.

[0036] Fig.10It is a schematic diagram of the clamping jaws in the present invention.

[0037] Fig.11 Schematic diagram of the chuck body of the present invention.

[0038] Fig.12 It is a schematic diagram of the clamping jaws when they are opened to the maximum position in the present invention.

[0039] Fig.13 It is an internal schematic diagram of the clamping jaws of the present invention when they are opened to the maximum position.

[0040] Fig.14 It is a schematic diagram of the clamping jaws of the present invention when they are clamped to a very small position.

[0041] Fig.15 It is an internal schematic diagram of the clamping jaws of the present invention when they are clamped to a very small position.

[0042] List of reference numerals:

[0043] 1-locking cylinder, 2-stop seat, 3-release nail, 4-chuck body, 5-clamping claw, 6-spring seat, 7-slide cylinder, 8-limit sliding pin, 9-stop claw, 10-fixing pin, 11-spring, 12-bolt, 13-fastening sleeve, 15-locking groove, 16-boss, 17-limit sliding pin hole, 18-clamping claw mounting groove, 19-external sliding plane, 20-taper hole surface, 21-card slot, 22-release nail hole, 23-threaded hole, 24-pin hole, 25-screw hole, 31-external thread, 32-ball head, 41-T-shaped oblique groove, 42-second internal thread, 51-boss, 52-strip sliding hole, 71-square hole, 72-inner sliding plane, 73-threaded hole, 74-second external thread, 75-knurled groove, 91-mounting pin hole, 92-spring groove, 93-claw head. DETAILED DESCRIPTION

[0044] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0045] like Figure 1-11As shown, an axial quick-moving chuck comprises a locking cylinder 1, a locking assembly and a clamping assembly; the locking cylinder 1 is a cylindrical structure, a clamping claw mounting seat is provided at its front end, locking groove groups with sawtooth-shaped cross sections are symmetrically provided on the upper and lower sides, which are used to quickly position the stop claw 9, and outer sliding planes 19 are symmetrically provided on the left and right sides, which are used to position the slide 7 so that the slide 7 can only move axially against the sliding plane 19, and a tapered hole surface 20 for mounting on a machine tool is provided inside the rear end, and the clamping claw mounting seat is a circular ring structure, and three clamping claws 5 that can move in its radial direction are evenly assembled on its front end surface along the circumferential direction. The locking groove group includes locking grooves 15 evenly distributed along the axial direction of the locking cylinder 1; the locking assembly includes a stop seat 2 that can slide back and forth and is sleeved on the outside of the locking cylinder 1. The stop seat 2 is a circular ring structure, and the upper and lower sides of its inner ring are symmetrically equipped with stop claws 9 that can cooperate with the locking grooves for locking. A slide cylinder 7 is also fixedly connected to the stop seat 2. The front end of the slide cylinder 7 extends out of the stop seat 2, and a fastening sleeve 13 rotatably connected to it is installed on the outside of the front end; the clamping assembly includes a chuck body 4 that is sleeved on the outside of the clamping jaw 5 and can control the clamping jaw 5 to move along the radial direction of the locking cylinder 1. The rear end of the chuck body 4 is threadedly connected to the fastening sleeve 13.

[0046] In this embodiment, three bosses 16 are evenly distributed along the circumferential direction on the front end surface of the clamping jaw mounting seat, and a clamping jaw mounting groove 18 is opened backward from the middle of the front end of the boss 16. The clamping jaw mounting groove 18 is a strip groove arranged along the radial direction of the clamping jaw mounting seat, and its two ends are respectively connected to the inner and outer sides of the boss 16. A limit sliding pin 8 is installed in the clamping jaw mounting groove 18, and a limit sliding pin hole 17 for installing the limit sliding pin 8 is symmetrically opened on the side of the boss 16.

[0047] In this embodiment, the upper and lower sides of the inner ring of the stop seat 2 are symmetrically provided with card slots 21, and the front sides of the card slot 21 are respectively connected with the front and rear end surfaces of the stop seat 2. The middle part of the stop claw 9 is swingably set in the card slot 21 through the fixing pin 10. A penetrating fixing pin hole 24 is provided on the side surface of the stop seat 2 at a corresponding position of the fixing pin 10. The side surface of the stop seat 2 is also provided with release nail holes 22 symmetrically arranged up and down, and threaded holes 23 symmetrically arranged up and down. The threaded holes 23 and the release nail holes 22 are both connected with the corresponding card slots 21, and the threaded holes 23 are placed on the front side of the release nail holes 22. The spring seat 6 is threadedly connected in the threaded hole 23, and the release nail 3 is installed in the release nail hole 22.

[0048] In this embodiment, the locking claw 9 is a rod-shaped structure, and a supporting protrusion is provided on its outer side surface. The top surface of the supporting protrusion is arc-shaped, and a mounting pin hole 91 compatible with the fixing pin 10 is opened on the side surface. A spring groove 92 is opened on the outer side of the front end of the locking claw 9, and a claw head 93 is provided on the inner side of the front end. The spring groove 92 is placed on the front side of the supporting protrusion, and a spring 11 is installed in the spring groove 92. The two ends of the spring 11 are respectively connected to the spring seat 6 and the spring groove 92. The claw head 93 is a right-angled triangle block, and a right-angled surface is connected to the inner side of the locking claw 9, and the other right-angled surface faces the front side. In the natural state, the spring 11 presses the front end of the stopping claw tightly in the locking groove 15 of the locking cylinder 1, and the inclined surface of the claw head 93 can ensure that the chuck body and other parts can smoothly move axially backward along the locking groove 15 of the locking cylinder, thereby quickly completing the radial contraction action of the clamping jaw 5.

[0049] In this embodiment, the release pin 3 is a round rod-shaped structure, with a ball head 32 at its inner end, a first external thread 31 at the inner end, and a limiting column at the outer end. The ball head 32 abuts against the outer side of the rear end of the locking claw 9, and a first internal thread matched with the first external thread 31 is provided in the release pin hole 22. The limiting column is larger than the release pin hole 22. When in use, the first external thread 31 is screwed into the release pin hole 22 of the stop seat 2 until the first external thread 31 passes through the first internal thread of the release pin hole 22. In this way, the release pin 3 can remain in a free state in the release pin hole 22 and will not fall out of the release pin hole 22. The ball head 32 of the release pin 3 can ensure that it keeps in contact with the surface of the locking claw 9 without interfering with the movement of the locking claw.

[0050] The inner sliding plane 72 is in sliding contact with the outer sliding plane 19. The outer side of the front sliding column is provided with an outer step, and the rear side of the front sliding column is fixedly connected to the stop seat 2 by bolts 12. The upper and lower sides of the rear sliding column are symmetrically provided with square holes 71 connected to the waist-shaped hole in the middle. The square holes 71 are matched with the claw heads 93. The inner sliding plane 72 is used to slide with the outer sliding plane 19 of the locking cylinder 1, which can not only ensure that the slide cylinder 7 slides axially on the locking cylinder 1, but also ensure that the slide cylinder 7 does not rotate. The two symmetrical square holes 71 on the cylindrical surface of the slide cylinder 7 are avoidance holes, so that the stop claw 9 installed on the stop seat 2 can act on the locking groove 15 of the locking cylinder 1 through the square holes 71.

[0051] In this embodiment, four screw holes 25 that are compatible with the bolts 12 are evenly distributed along the circumferential direction on the end face of the stop seat 2, and four threaded holes 73 that are compatible with the bolts 12 are evenly distributed along the circumferential direction on the rear end face of the front sliding column, wherein the positions of the four threaded holes 73 correspond to the positions of the four screw holes 25 respectively.

[0052] In this embodiment, the fastening sleeve 13 is composed of a front sleeve and a rear sleeve arranged in front and back. The front sleeve is a circular ring structure, and a second external thread 74 is provided on its outer side, and an internal step matched with the outer step of the slide cylinder 7 is provided on the inner side. The front sleeve is rotatably connected to the front slide post of the slide cylinder 7, and the rear sleeve is a cylindrical structure with an opening at the rear end outside. A through hole matched with the rear end of the front slide post is provided in the middle of the front end. The rear sleeve is rotatably mounted outside the stop seat 2, and knurled grooves 75 are evenly distributed on its outer side along the circumferential direction. The knurled grooves 75 can facilitate manual rotation and tightening operations.

[0053] In this embodiment, the clamping jaw 5 is a right-angled trapezoidal piece with the inclined surface facing the outer side of the front end. A boss 51 is provided on the inclined side of the clamping jaw 5, and a strip-shaped sliding hole 52 is opened on the rear side surface. The strip-shaped sliding hole 52 is perpendicular to the axis of the locking cylinder 1 and limits the limiting sliding pin 8 therein.

[0054] In this embodiment, the chuck body 4 is composed of a chuck and a connecting tube arranged in front and back. The chuck is a trumpet-shaped structure with a small front and a large rear. Its inner conical surface is adapted to the inclined surface of the clamping jaw 5, and three T-shaped bevel grooves 41 are evenly distributed along the circumferential direction on the inner side surface of the chuck. The T-shaped bevel grooves 41 are arranged along the axial direction of the chuck body 4 and are adapted to the bosses 51 of the clamping jaw 5. The bosses 51 of the clamping jaw 5 can be slidably placed in the T-shaped bevel grooves 41. The connecting tube is a cylindrical structure, and its inner side is provided with a second internal thread 42 adapted to the second external thread 74.

[0055] The working principle of the present invention is as follows (refer to Figures 12 to 15 ):

[0056] (1) The quick-moving chuck is quickly connected and fixed to the machine tool component through the tapered hole surface 20 of the locking cylinder;

[0057] (2) When the three clamping jaws 5 are in the closed state, use two fingers to press the two symmetrical release pins 3 on the chuck at the same time, then the head of the stop claw 9 is separated from the locking groove 15 of the locking cylinder 1, and then the stop seat 2 is pushed forward, and the stop seat drives the release pin, the chuck body, the stop claw, the spring seat, the slide cylinder, etc. to move forward together;

[0058] (3) Since the clamping jaw 5 is slidably fixed in the clamping jaw installation groove 18 of the locking cylinder 1 by the limit sliding pin 8, the clamping jaw cannot move forward together with the clamping jaw. At the same time, since the boss 51 of the clamping jaw is slidably matched with the T-shaped inclined groove 41 of the chuck body 4, when the chuck body 4 moves forward, the clamping jaw is pushed to move radially outward, and the bar-shaped sliding hole 52 of the clamping jaw slides on the limit sliding pin 8, thereby completing the radial opening action of the clamping jaw; release the finger pressing on the release pin, and under the action of the spring 11, the stop claw and the locking groove are engaged;

[0059] (4) Place the larger diameter tool between the chuck jaws, drag the stop seat and the chuck body backward, and move the jaws radially closed until they contact the outer diameter of the clamped tool;

[0060] (5) When the stop claw moves to a certain position together with the stop seat, the stop claw and the locking groove are engaged. At this time, you only need to pinch the knurled groove 75 of the fastening sleeve 13 by hand and slightly rotate the fastening sleeve 13, so that the internal thread 42 of the chuck body can rotate on the external thread 74 of the fastening sleeve 13, thereby continuing to drive the clamping claw to move radially until the tool is clamped;

[0061] (6) Since the sliding plane 72 of the slide cylinder 7 and the sliding plane 19 of the locking cylinder 1 are in sliding cooperation, it is ensured that the slide cylinder 7 can only slide axially on the locking cylinder 1, thereby ensuring the rotational power of the chuck body 4;

[0062] (7) When it is necessary to clamp a tool with a smaller diameter or remove a clamped tool, use two fingers to simultaneously press the two symmetrical release pins 3 on the chuck, and the head of the locking claw 9 will be disengaged from the locking groove 15 of the locking cylinder 1, and then the stop seat 2 will be pushed forward to open the clamping claw. Then, the used large-diameter tool is taken out and the smaller-diameter tool is put in. The stop seat 2 is pushed backward until the clamping claw clamps the tool. In this way, a quick switch between clamping large and small-diameter tools can be completed.

[0063] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. An axial quick-moving chuck, characterized in that: It comprises a locking cylinder (1), a locking assembly and a clamping assembly; The locking cylinder (1) is a cylindrical structure, with a clamping jaw mounting seat at its front end, locking groove groups with sawtooth-shaped cross-sections symmetrically arranged on the upper and lower sides, and outer sliding planes (19) symmetrically arranged on the left and right sides, and a tapered hole surface (20) for mounting on a machine tool is arranged inside the rear end, the clamping jaw mounting seat is a circular ring structure, and three clamping jaws (5) that can move in the radial direction are evenly arranged on the front end surface in the circumferential direction, and the locking groove group includes locking grooves (15) evenly distributed along the axial direction of the locking cylinder (1); The locking assembly comprises a stop seat (2) which is slidable forward and backward and is sleeved outside the locking cylinder (1); the stop seat (2) is an annular structure, and stop claws (9) which can cooperate with the locking groove for locking are symmetrically mounted on the upper and lower sides of the inner ring; a slide cylinder (7) is also fixedly connected inside the stop seat (2); the front end of the slide cylinder (7) extends out of the stop seat (2), and a fastening sleeve (13) is mounted outside the front end and is rotatably connected to the slide cylinder (7); The clamping assembly comprises a chuck body (4) which is sleeved outside the clamping jaw (5) and can control the clamping jaw (5) to move in the radial direction of the locking cylinder (1); the rear end of the chuck body (4) is threadedly connected to the fastening sleeve (13); Three first bosses (16) are evenly distributed along the circumferential direction on the front end surface of the clamping jaw mounting seat, a clamping jaw mounting groove (18) is provided in the middle of the front end of the first boss (16) and is provided backward, the clamping jaw mounting groove (18) is a strip groove provided along the radial direction of the clamping jaw mounting seat, and its two ends are respectively connected to the inner and outer sides of the first boss (16), a limit sliding pin (8) is installed in the clamping jaw mounting groove (18), and a limit sliding pin hole (17) for installing the limit sliding pin (8) is symmetrically provided on the side surface of the first boss (16); The inner ring of the stop seat (2) is symmetrically provided with a clamping groove (21) on the upper and lower sides, and the front sides of the clamping groove (21) are respectively connected to the front and rear end surfaces of the stop seat (2). The middle part of the stop claw (9) is swingably arranged in the clamping groove (21) through a fixing pin (10). A fixing pin hole (24) is provided on the side surface of the stop seat (2) at a position corresponding to the fixing pin (10). The side surface of the stop seat (2) is also provided with a release nail hole (22) symmetrically arranged up and down, and a first threaded hole (23) symmetrically arranged up and down. The first threaded hole (23) and the release nail hole (22) are both connected to the corresponding clamping groove (21), and the first threaded hole (23) is arranged on the front side of the release nail hole (22). A spring seat (6) is threadedly connected in the first threaded hole (23), and a release nail (3) is installed in the release nail hole (22).

2. The axial quick-moving chuck according to claim 1, characterized in that: The locking claw (9) is a rod-shaped structure, and a supporting protrusion is provided on its outer side surface. The top surface of the supporting protrusion is arc-shaped, and a mounting pin hole (91) matched with the fixing pin (10) is provided on the side surface. A spring groove (92) is provided on the outer side of the front end of the locking claw (9), and a claw head (93) is provided on the inner side of the front end. The spring groove (92) is arranged on the front side of the supporting protrusion, and a spring (11) is installed in the spring groove (92). The two ends of the spring (11) are respectively connected to the spring seat (6) and the spring groove (92). The claw head (93) is a right-angled triangle block, and one right-angled surface is connected to the inner side of the locking claw (9), and the other right-angled surface faces the front side.

3. The axial quick-moving chuck according to claim 1, characterized in that: The release nail (3) is a round rod-shaped structure, with a ball head (32) provided at its inner end, a first external thread (31) provided on the outer side of the inner end, and a limit column provided on the outer side, the ball head (32) abuts against the outer side of the rear end of the stop claw (9), and a first internal thread matched with the first external thread (31) is provided in the release nail hole (22).

4. The axial quick-moving chuck according to claim 2, characterized in that: The slide cylinder (7) is a stepped cylindrical structure with a larger front portion and a smaller rear portion, and is composed of a front slide column and a rear slide column arranged front and rear. A waist-shaped hole matching the locking cylinder (1) is provided in the middle of the slide cylinder (7) along the axial direction, and the front and rear sides thereof are inner sliding planes (72). The inner sliding plane (72) is in sliding contact with the outer sliding plane (19). An outer step is provided on the outer side of the front slide column, and the rear side of the front slide column is fixedly connected to the stop seat (2) by bolts (12). Square holes (71) connected to the waist-shaped hole in the middle are symmetrically provided on the upper and lower sides of the rear slide column, and the square holes (71) are matched with the claw heads (93).

5. The axial quick-moving chuck according to claim 4, characterized in that: Four screw holes (25) matching the bolts (12) are evenly distributed along the circumferential direction on the end surface of the stop seat (2), and four second threaded holes (73) matching the bolts (12) are evenly distributed along the circumferential direction on the rear end surface of the front sliding column, wherein the positions of the four second threaded holes (73) respectively correspond to the positions of the four screw holes (25).

6. The axial quick-moving chuck according to claim 4, characterized in that: The fastening sleeve (13) is composed of a front sleeve and a rear sleeve arranged at the front and rear ends. The front sleeve is a circular ring-shaped structure, and is provided with a second external thread (74) on its outer side, and is provided with an internal step matching the external step of the slide cylinder (7) on its inner side. The front sleeve is rotatably connected to the front slide column of the slide cylinder (7). The rear sleeve is a cylindrical structure with an opening at the rear end, and a through hole matching the rear end of the front slide column is provided in the middle of the front end. The rear sleeve is rotatably arranged outside the stop seat (2), and is provided with knurled grooves (75) evenly distributed on its outer side along the circumferential direction.

7. The axial quick-moving chuck according to claim 1, characterized in that: The clamping jaw (5) is a right-angled trapezoidal piece with an inclined surface facing the outer side of the front end. A second boss (51) is provided on the inclined side of the clamping jaw (5), and a strip-shaped sliding hole (52) is opened on the rear side surface. The strip-shaped sliding hole (52) is perpendicular to the axis of the locking cylinder (1) and limits the limiting sliding pin (8) therein.

8. The axial quick-moving chuck according to claim 7, characterized in that: The chuck body (4) is composed of a chuck and a connecting tube arranged at the front and back. The chuck is a trumpet-shaped structure with a small front and a large rear. Its inner conical surface is matched with the inclined surface of the clamping jaw (5), and three T-shaped inclined grooves (41) are evenly distributed along the circumferential direction on the inner side surface of the chuck. The T-shaped inclined grooves (41) are arranged along the axial direction of the chuck body (4) and are matched with the second boss (51) of the clamping jaw (5). The second boss (51) of the clamping jaw (5) can be slidably placed in the T-shaped inclined grooves (41). The connecting tube is a cylindrical structure, and its inner side is provided with a second internal thread (42) matched with the second external thread (74).

Images