Chuck for clamping gear

Abstract

The utility model discloses a chuck for clamping a gear, which belongs to the field of chucks and comprises a chuck body, an arranged connecting mechanism is matched with an upper chuck for use, after a positioning inserting plate on a toothed plate is inserted into a positioning inserting opening formed in a connecting seat on the top surface of a clamping jaw, a screw knob is rotated to push an isosceles trapezoid block through a rotating block, and the toothed plate is clamped by the isosceles trapezoid block. The isosceles trapezoid block extrudes the right triangle block towards the two sides, the right triangle block drives the movable plate to move towards the outer side along the fixing rod through the connecting hole, and the compression spring is forced to conduct tightening operation till the clamping block penetrates through the through hole and then is inserted into the clamping hole formed in the side wall of the positioning inserting plate in the positioning inserting opening. Therefore, the purpose that the toothed plate with the clamping teeth is conveniently and rapidly installed and fixed on the top face of the clamping jaw for use is achieved, when the toothed plate with the clamping teeth needs to be replaced, the toothed plate is also conveniently disassembled, then convenience is brought to disassembly, assembly and replacement operation of the toothed plate with the clamping teeth, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chuck field especially relates to a gear clamping chuck. BACKGROUND

[0002] The chuck is the mechanical device that is used to clamp workpieces on the machine tool. The chuck is an accessory of the machine tool that clamps and positions workpieces by the radial movement of the movable clamping jaw uniformly distributed on the chuck body. The chuck is generally composed of three parts, the chuck body, the movable clamping jaw and the clamping jaw driving mechanism. The minimum diameter of the chuck body is 65mm, and the maximum diameter can reach 1500mm. The central part has a through hole to pass the workpiece or the bar. The back part has a cylindrical or short conical structure, which is connected to the end of the main shaft of the machine tool directly or through a flange. The chuck is usually installed on the lathe, the cylindrical grinder and the internal grinder. It can also be used on the milling machine and the drilling machine in cooperation with various indexing devices.

[0003] In the prior art, a chuck is disclosed in the Chinese utility model patent with the publication number "CN221109935U" and the patent name "Gear clamping chuck". The patent discloses a chuck, which comprises a chuck body, a plurality of clamping jaws, a plurality of adjustable clamping components, and a plurality of clamping teeth. The clamping jaws are fixed with a limiting connecting component. The clamping components are connected to the limiting connecting component of the clamping jaw. The clamping teeth are matched with the gear to be machined.

[0004] However, when the inner hole of the gear needs to be machined, the appropriate clamping component is selected according to the model and diameter of the gear, and the clamping component is installed on the limiting connecting component. The tooth plate with clamping teeth is installed and fixed on the clamping jaw extension through bolts. When the tooth plate with clamping teeth needs to be replaced, the worker needs to use auxiliary tools to disassemble the bolts, and then disassemble the tooth plate from the clamping jaw extension. When the tooth plate is installed and fixed on the clamping jaw extension again, the auxiliary tools need to be used again. The operation is complicated, which brings inconvenience to the disassembly and replacement of the tooth plate with clamping teeth when clamping and machining gears of different sizes, and thus the work efficiency is reduced.

[0005] Therefore, in order to solve the above technical problems, the utility model provides a gear clamping chuck. UTILITY MODEL CONTENTS

[0006] The main purpose of the utility model is to provide a gear clamping chuck, which can effectively solve the problems in the background art.

[0007] In order to achieve the above purpose, the utility model adopts the technical scheme that

[0008] The utility model provides a chuck for gear clamping, including the inside activity of chuck body is connected with big bevel gear, and the lower activity of big bevel gear is engaged with three small bevel gears, the outside end of small bevel gear is equipped with the square hole of spanner insertion, the top surface of chuck body is also connected with three clamping jaw, and big bevel gear is connected with clamping jaw through the spiral groove of top surface activity, the top surface of clamping jaw is equipped with connecting mechanism, and connecting mechanism includes connecting seat, fixed link, compression spring, movable plate, clamping block, right triangle block, isosceles trapezoidal block and screw knob, connecting seat is fixedly connected in the top surface of clamping jaw, and fixed link is fixedly connected in the inside of connecting seat, the both ends of fixed link are respectively equipped with compression spring, and movable plate is fixedly connected on the inner side wall of compression spring and is connected with fixed link through the connecting hole on the side wall, clamping block is fixedly connected on the outer side wall of movable plate, and right triangle block is fixedly connected at the rear end of movable plate, isosceles trapezoidal block is connected in connecting seat, and screw knob is connected with isosceles trapezoidal block through the rotating block of front end, the inner side wall of connecting seat is fixedly connected with the toothed plate, and a group of symmetrical clamping teeth are fixedly connected on the inner side wall of toothed plate.

[0009] Further, a group of symmetrical positioning insert plates are fixedly installed on the outer side wall of the toothed plate, and a clamping hole is formed in the side wall of the positioning insert plate.

[0010] Further, the connecting seat is fixedly installed on the top surface of the clamping jaw, a group of symmetrical positioning insert openings are formed in the inner side wall of the connecting seat, an active inner cavity is formed in the inside of the connecting seat, a through hole is formed in the inner side wall of the positioning insert opening and communicates with the active inner cavity, and a screw hole is further formed in the outer side wall of the connecting seat.

[0011] Further, the fixed link is fixedly installed in the active inner cavity, a group of symmetrical compression springs are sleeved on the outside of the fixed link, the outer side end of the compression spring is fixedly installed with the inner wall of the active inner cavity, a movable plate is fixedly installed on the inner side end of the compression spring, a connecting hole is formed in the side wall of the movable plate, the movable plate is movably installed with the fixed link through the connecting hole, a clamping block is fixedly installed on the outer side wall of the movable plate, the clamping block passes through the through hole and is inserted into the clamping hole, a right triangle block is further fixedly installed on the outer side end of the movable plate, and the inclined surface of the right triangle block faces the inner side position.

[0012] Further, the isosceles trapezoidal block is movably installed in the active inner cavity, and a convex groove is formed in the outer side wall of the isosceles trapezoidal block.

[0013] Further, the screw knob is threadedly connected with the screw hole, a rotating block is fixedly installed on the inner side end of the screw knob and movably installed in the convex groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The connecting mechanism is arranged in cooperation with the use of the chuck, after the positioning plug-in plate on the tooth plate is inserted into the positioning socket arranged on the top surface connecting seat of the claw, the equal leg trapezoidal block is extruded to the two side directions by rotating the screw knob through the rotating block to drive the isosceles trapezoidal block, the right-angled triangular block drives the movable plate to move to the outside direction along the fixed rod through the connecting hole, and the compression spring is forced to operate, until the clamping block is inserted into the clamping hole arranged on the side wall of the positioning plug-in plate in the positioning socket through the through hole, so that the tooth plate with the clamping teeth is quickly installed and fixed on the top surface of the claw for use, and when the tooth plate with the clamping teeth needs to be replaced, the tooth plate is also convenient to disassemble, and the disassembly and replacement operation of the tooth plate with the clamping teeth is facilitated, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure schematic view of the utility model;

[0017] Figure 2 It is an overall structure split schematic view of the utility model;

[0018] Figure 3 It is an overall structure schematic view of the tooth plate of the utility model;

[0019] Figure 4 It is a split schematic view of the connecting seat of the utility model;

[0020] Figure 5 It is a structure split schematic view of the connecting mechanism of the utility model:

[0021] Figure 6 It is a split surface plane overhead schematic view of the connecting mechanism and the tooth plate of the utility model.

[0022] In the drawing: 1, chuck body; 2, large bevel gear; 3, small bevel gear; 4, wrench insertion square hole; 5, helical groove; 6, claw; 7, tooth plate; 8, clamping tooth; 9, connecting mechanism; 10, positioning plug-in plate; 11, clamping hole; 12, connecting seat; 13, positioning socket; 14, movable inner cavity; 15, through hole; 16, screw hole; 17, fixed rod; 18, compression spring; 19, movable plate; 20, connecting hole; 21, clamping block; 22, right-angled triangular block; 23, equal leg trapezoidal block; 24, convex groove; 25, screw knob; 26, rotating block. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0024] As Figure 1 - Figure 6 The utility model provides a kind of chuck for gear clamping, including chuck body 1, the inside of chuck body 1 is movably connected with big bevel gear 2, and the lower of big bevel gear 2 is movably engaged with three small bevel gears 3, and the outside end of small bevel gear 3 is provided with spanner insertion square hole 4, and the top surface of chuck body 1 is movably connected with three clamping jaws 6, and big bevel gear 2 is movably connected with clamping jaw 6 by the spiral groove 5 being set on top surface, and the top surface of clamping jaw 6 is equipped with connecting mechanism 9, and connecting mechanism 9 includes connecting seat 12, fixed rod 17, compression spring 18, movable plate 19, clamping block 21, right triangle block 22, isosceles trapezoidal block 23 and screw knob 25, connecting seat 12 is fixedly connected on the top surface of clamping jaw 6, and fixed rod 17 is fixedly connected in the inside of connecting seat 12, and the outside two ends of fixed rod 17 are respectively equipped with compression spring 18, and movable plate 19 is fixedly connected on the inside wall of compression spring 18 and is movably connected with fixed rod 17 by the connecting hole 20 on the side wall, clamping block 21 is fixedly connected on the outside wall of movable plate 19, and right triangle block 22 is fixedly connected at the rear end of movable plate 19, isosceles trapezoidal block 23 is movably connected in connecting seat 12, and screw knob 25 is movably connected with isosceles trapezoidal block 23 by the rotating block 26 of front end, the inside wall of connecting seat 12 is fixedly connected with tooth plate 7, and a group of symmetrical clamping teeth 8 is fixedly connected on the inside wall of tooth plate 7.

[0025] As Figure 3 The outside wall of tooth plate 7 is fixedly installed with a group of symmetrical positioning insert plate 10, and the side wall of positioning insert plate 10 is provided with clamping hole 11, and positioning insert plate 10 and clamping hole 11 on the side wall of positioning insert plate 10 are used for the positioning and fixed effect of cooperation tooth plate 7;

[0026] As Figure 1 And Figure 4 Connecting seat 12 is fixedly installed on the top surface of clamping jaw 6, and a group of symmetrical positioning insert 13 is set on the inside wall of connecting seat 12, and positioning insert plate 10 is inserted into positioning insert 13, and tooth plate 7 can be quickly positioned and installed on the inside end wall of connecting seat 12, and active inner cavity 14 is set in the inside of connecting seat 12, and active inner cavity 14 is used for the active use of each active component of connecting mechanism 9, and the inside side wall of positioning insert 13 is provided with through hole 15 in communication with active inner cavity 14, and through hole 15 can ensure that clamping block 21 passes through through hole 15 and inserts into clamping hole 11 to limit and fix tooth plate 7, and screw hole 16 is further set on the outside wall of connecting seat 12, and screw hole 16 is used for the rotation operation of cooperation screw knob 25;

[0027] As Figure 5 And Figure 6As shown, the fixed rod 17 is fixedly installed in the movable inner cavity 14, and a set of symmetrical compression springs 18 are sleeved on the outside of the fixed rod 17, the outside end of the compression spring 18 is fixedly installed with the inner wall of the movable inner cavity 14, and the inside end of the compression spring 18 is fixedly installed with the movable plate 19, the side wall of the movable plate 19 is provided with a connecting hole 20, and the movable plate 19 is movably installed with the fixed rod 17 through the connecting hole 20, the outside side wall of the movable plate 19 is fixedly installed with the clamping block 21, and the clamping block 21 passes through the through hole 15 and is inserted into the clamping hole 11, and the outside end of the movable plate 19 is also fixedly installed with the right triangle block 22, and the inclined surface of the right triangle block 22 faces the inside position, when the right triangle block 22 is extruded, the movable plate 19 is driven to move outward along the fixed rod 17 through the connecting hole 20 on the side wall, and the compression spring 18 sleeved on the fixed rod 17 is forced to be contracted by the movable plate 19, so that the clamping block 21 can be inserted into the clamping hole 11 through the through hole 15, thereby achieving the purpose of conveniently installing and fixing the tooth plate 7 with the clamping teeth 8, and facilitating subsequent disassembly and replacement;

[0028] As shown in Figure 5 and Figure 6 The isosceles trapezoidal block 23 is movably installed in the movable inner cavity 14, and the isosceles trapezoidal block 23 can extrude the symmetrical right triangle blocks 22, and the outside side wall of the isosceles trapezoidal block 23 is provided with a convex groove 24, and the convex groove 24 is used to limit the rotation of the rotating block 26 in cooperation with the rotating block 26;

[0029] As shown in Figure 5 and Figure 6 The screw knob 25 is screwed with the screw hole 16, and the inside end of the screw knob 25 is fixedly installed with the rotating block 26 and movably installed in the convex groove 24, and manual rotation of the screw knob 25 drives the rotating block 26 to rotate in the convex groove 24, so that the isosceles trapezoidal block 23 moves forward or backward.

[0030] The specific use principle of the chuck in cooperation with the connecting mechanism 9 when machining the gear is as follows:

[0031] When the inner hole of the gear needs to be processed, according to the model and diameter of the gear, the toothed plate 7 with the clamping teeth 8 is selected, when the toothed plate 7 is installed, the positioning plug plate 10 installed on the outer side wall of the toothed plate 7 is inserted into the positioning spout 13 opened on the inner side wall of the connecting seat 12 installed on the top surface of the clamping jaw 6, and the screw knob 25 on the outer side wall of the connecting seat 12 is rotated, the screw knob 25 will realize the screw thread rotation operation in the screw hole 16, and drive the rotating block 26 installed on the inner side to rotate synchronously in the convex groove 24 opened on the outer side wall of the isosceles trapezoidal block 23, and after continuously rotating the screw knob 25, the screw end of the screw knob 25 will gradually enter the movable inner cavity 14, and the isosceles trapezoidal block 23 is moved in the movable inner cavity 14 by the rotating block 26 to the inner side direction, in the process of continuously moving the isosceles trapezoidal block 23 in the movable inner cavity 14, the isosceles trapezoidal block 23 will be extruded by the inclined surface on both sides to the inclined surface of the symmetrical right triangle block 22 on both sides, and the symmetrical right triangle block 22 will move in the opposite direction, the right triangle block 22 will drive the movable plate 19 to move synchronously along the fixed rod 17 through the connecting hole 20 opened on the side wall, and force the compression spring 18 sleeved on the fixed rod 17 to be tightened, until the clamping block 21 installed on the outer side wall of the movable plate 19 is inserted into the clamping hole 11 opened on the side wall of the positioning plug plate 10 in the positioning spout 13, and the screw knob 25 cannot be rotated again, the installation of the toothed plate 7 with the clamping teeth 8 is completed, after the top surface of the three clamping jaws 6 is installed with the toothed plate 7 with the same clamping teeth 8, the gear to be processed is placed on the top surface of the chuck body 1, the one end of the volta handle is inserted into the side wrench insertion square hole 4, and the small bevel gear 3 is driven to rotate by rotating the volta wrench, the small bevel gear 3 will drive the large bevel gear 2 to rotate under the rotating meshing effect, and in the rotating process, the chuck body 1 top surface movable connection three direction clamping jaws 6 will be driven to move to the center direction at the same time through the top surface spiral groove 5, until the clamping teeth 8 on the toothed plate 7 with the clamping teeth 8 installed on the inner side wall of the connecting seat 12 on the top surface of the clamping jaw 6 is engaged with the teeth on the gear to be processed, in this way, the self-centering clamping purpose of the gear can be realized;

[0032] When gears of different sizes need to be processed, the tooth plate 7 with the clamping teeth 8 needs to be replaced accordingly, and when the tooth plate 7 is replaced and disassembled, the reverse rotation of the screw knob 25 moves the isosceles trapezoidal block 23 outward through the rotating block 26, so that the isosceles trapezoidal block 23 no longer extrudes the two straight triangular blocks 22, the compression spring 18 will restore and expand, and push the movable plate 19 to move the movable plate 19 through the connecting hole 20 along the fixed rod 17 to the inside, until the clamping block 21 moves out of the clamping hole 11 and moves into the movable inner cavity 14 through the through hole 15, and the screw knob 25 cannot be rotated, so that the tooth plate 7 can be disassembled and replaced, thereby facilitating the disassembly and replacement of the tooth plate 7 with the clamping teeth 8, and further improving the work efficiency.

[0033] In conclusion, only the preferred embodiments of the present application are described above, and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, various improvements can be made to the present application without departing from the scope of the present application, and equivalent substitutions can be made to the components therein, or equivalent substitutions can be made to part of the technical features. Any improvement or substitution within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A gear clamping chuck, comprising a chuck body (1), wherein a large bevel gear (2) is movably connected inside the chuck body (1), and three small bevel gears (3) are movably meshed below the large bevel gear (2), wherein a wrench insertion square hole (4) is provided on the outer end of the small bevel gears (3), and three jaws (6) are movably connected to the top surface of the chuck body (1), and the large bevel gear (2) is movably connected to the jaws (6) through a spiral groove (5) provided on the top surface, characterized in that: The top surface of the claw (6) is provided with a connecting mechanism (9), and the connecting mechanism (9) includes a connecting seat (12), a fixing rod (17), a compression spring (18), a movable plate (19), a locking block (21), a right-angled triangular block (22), an isosceles trapezoidal block (23), and a screw knob (25). The connecting seat (12) is fixedly connected to the top surface of the claw (6), and the fixing rod (17) is fixedly connected to the inside of the connecting seat (12). Compression springs (18) are respectively sleeved on both ends of the outside of the fixing rod (17), and the movable plate (19) is fixedly connected to the compression springs (18). The inner sidewall is movably connected to the fixed rod (17) through the connecting hole (20) on the sidewall. The locking block (21) is fixedly connected to the outer sidewall of the movable plate (19), and the right-angled triangular block (22) is fixedly connected to the rear end of the movable plate (19). The isosceles trapezoidal block (23) is movably connected to the connecting seat (12), and the screw knob (25) is movably connected to the isosceles trapezoidal block (23) through the rotating block (26) at the front end. The inner sidewall of the connecting seat (12) is fixedly connected to the toothed plate (7), and a set of symmetrical locking teeth (8) is fixedly connected to the inner sidewall of the toothed plate (7).

2. The gear clamping chuck according to claim 1, characterized in that: A set of symmetrical positioning plates (10) are fixedly installed on the outer side wall of the toothed plate (7), and the side wall of the positioning plates (10) is provided with a locking hole (11).

3. A gear clamping chuck according to claim 2, characterized in that: The connecting seat (12) is fixedly installed on the top surface of the claw (6), and a set of symmetrical positioning sockets (13) are provided on the inner side wall of the connecting seat (12). The connecting seat (12) has a movable inner cavity (14) inside, and a through hole (15) communicating with the movable inner cavity (14) is provided on the inner side wall of the positioning socket (13). A screw hole (16) is also provided on the outer side wall of the connecting seat (12).

4. A gear clamping chuck according to claim 3, characterized in that: The fixed rod (17) is fixedly installed inside the movable inner cavity (14), and a set of symmetrical compression springs (18) are fitted on the outside of the fixed rod (17). The outer end of the compression spring (18) is fixedly installed with the inner wall of the movable inner cavity (14), and a movable plate (19) is fixedly installed on the inner end of the compression spring (18). A connecting hole (20) is provided on the side wall of the movable plate (19), and the movable plate (19) is movably installed with the fixed rod (17) through the connecting hole (20). A locking block (21) is fixedly installed on the outer side wall of the movable plate (19), and the locking block (21) passes through the through hole (15) and is inserted into the locking hole (11). A right-angled triangular block (22) is also fixedly installed on the outer end of the movable plate (19), and the inclined surface of the right-angled triangular block (22) faces the inner part.

5. A gear clamping chuck according to claim 4, characterized in that: The isosceles trapezoidal block (23) is movably installed in the movable inner cavity (14), and a groove (24) is provided on the outer wall of the isosceles trapezoidal block (23).

6. A gear clamping chuck according to claim 5, characterized in that: The screw knob (25) is threadedly connected to the screw hole (16), and a rotating block (26) is fixedly installed on the inner end of the screw knob (25) and movably installed in the groove (24).

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