Chuck assembly

Abstract

The utility model provides a chuck assembly and belongs to the technical field of machinery. The problem that an existing chuck is not practical is solved. The chuck assembly comprises a support, a rotating motor, a chuck body and a rotating shaft rotationally arranged on the support, the upper end of the rotating shaft is fixedly connected with the chuck body, the rotating motor is connected with the lower end of the rotating shaft through a belt transmission structure, the chuck assembly further comprises a U-shaped bottom frame, and the support is located in the bottom frame; connecting shafts are horizontally and rotationally arranged at the two ends of the bottom frame, the adjacent ends of the two connecting shafts are fixedly connected with supports, and the ends, away from each other, of the two connecting shafts extend out of the bottom frame. A swing motor and a rotating motor are arranged on the outer sides of the two ends of the bottom frame respectively, the rotating motor is fixedly connected with the corresponding connecting shaft through a machine base, an arc groove allowing the belt to penetrate through is formed in the bottom frame, and the swing motor is fixed to the bottom frame and used for driving the other connecting shaft to rotate. The chuck assembly is relatively practical.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a chuck especially a chuck assembly. BACKGROUND

[0002] In the machining process, the workpiece is generally clamped by the chuck, and this structure is disclosed in the steel ball cold upsetting die grinding table (application number: 202323566488.8) of Chinese patent library, including the frame fixed on the ground, the frame center is provided with the three-jaw chuck fixed on the top of the frame, the three-jaw chuck top clamps the cold upsetting die, the three-jaw chuck bottom is connected with the main shaft vertically arranged on the frame platform, the main shaft middle segment is provided with the bearing seat fixed in the frame center, the main shaft bottom is connected with the main shaft pulley, the frame side is connected with the driving motor through the motor connecting plate, and the motor pulley at the bottom of the driving motor is connected with the main shaft pulley through the belt.

[0003] In the above grinding table, the three-jaw chuck can only rotate around its own central axis, and the rotation direction is relatively single, which cannot match more complex processing conditions, and the practicability is poor. INVENTION CONTENTS

[0004] The utility model aims at the above problems existing in prior art and provides a chuck assembly capable of increasing the rotation angle of the chuck body.

[0005] The utility model discloses a chuck assembly, including support, rotating motor, chuck body and rotating shaft that rotates on the support, the chuck body is fixedly connected to the upper end of the rotating shaft, the rotating motor is connected to the lower end of the rotating shaft through the belt transmission structure, the belt transmission structure includes the horizontally arranged belt, characterized by, the utility model discloses a chuck assembly further includes the bottom bracket that is the n shape, and the support is in the bottom bracket;Both ends of the bottom bracket are horizontally rotatably provided with connecting shafts, and the two connecting shafts are coaxially arranged;The end of the two connecting shafts adjacent is fixedly connected with the support, and the end of the two connecting shafts away from each other is extended out of the bottom bracket;The outer side of both ends of the bottom bracket is respectively provided with a swing motor and the rotating motor, the rotating motor is fixedly connected with the corresponding connecting shaft through the machine base, the arc groove is provided on the bottom bracket for the belt to pass through, and the arc groove is coaxially arranged with the connecting shaft, the swing motor is fixed on the bottom bracket, and the swing motor is used to drive the other connecting shaft to rotate.

[0006] When using, the workpiece is clamped by the chuck body;The rotating motor drives the chuck body to rotate through the rotating shaft and the belt transmission structure cooperation;The swing motor drives the chuck body to swing through the connecting shaft to realize the processing of multiple positions of the workpiece.

[0007] With the cooperation of components or structures such as the base frame, machine base, and arc groove, the rotary motor swings synchronously with the support. During the swinging process of the support, the rotary motor still drives the chuck body to rotate around its own axis through the belt drive structure. This increases the workpiece processing range by increasing the rotation angle of the chuck body, making it highly practical.

[0008] In the aforementioned chuck assembly, both ends of the base frame have horizontally penetrating connecting holes, and two connecting shafts are respectively inserted into the two connecting holes. Bearings are installed in both connecting holes, each bearing consisting of an inner ring and an outer ring. The outer ring and inner ring of the bearing are respectively fixed to the base frame and the corresponding connecting shaft. This design offers advantages such as simple structure and convenient installation.

[0009] In the chuck assembly described above, an annular limiting seat is formed on the inner wall of the connecting hole, and a positioning sleeve is fixed inside the connecting hole. The two positioning sleeves are respectively fitted onto the two connecting shafts, and the two limiting seats are located between the two positioning sleeves. The two ends of the outer ring of the bearing are pressed against the corresponding limiting seat and the corresponding positioning sleeve to stabilize and lock the bearing in the axial direction, improve the rotational stability of the connecting shaft, and thus improve the workpiece machining quality and accuracy.

[0010] In the aforementioned chuck assembly, the end of the locating sleeve furthest from the corresponding bearing extends into the corresponding connecting hole. A slewing bearing is provided between the base and the corresponding locating sleeve. The slewing bearing and the bearing are coaxially arranged, and the inner and outer rings of the slewing bearing are respectively pressed and fixed onto the corresponding locating sleeve and the base. The base forms a rotational engagement with the chassis through the slewing bearing, thereby transferring part of the weight of the base and the rotary motor assembly to the chassis, reducing the stress on the connecting shaft, and simultaneously enhancing the working stability and lifespan of the chuck assembly.

[0011] In the aforementioned chuck assembly, a ring-shaped positioning seat is formed on the outer wall of the positioning sleeve, and the positioning seat presses against the outer wall of the base frame. The positioning seat serves to limit the installation and facilitates the installation of the positioning sleeve.

[0012] In the aforementioned chuck assembly, the inner ring of the slewing bearing has a ring of axially penetrating through holes (Type 1), and the positioning seat has a ring of through holes (Type 2), with the number of through holes (Type 2) on the same positioning seat being the same as that of through holes (Type 1). A bolt passes through each through hole (Type 1), with the bolt shank passing through the corresponding through hole (Type 2) and screwed into the base frame. The bolt head is pressed against the inner ring of the slewing bearing. By fixing the slewing bearing and the corresponding positioning sleeve using the same ring of bolts, the assembly offers advantages such as simple structure and convenient installation.

[0013] In the chuck assembly described above, a mounting hole is horizontally penetrating the base, and a shaft corresponding to the base has a shaft body that matches the mounting hole, and the shaft body is inserted and fixed in the mounting hole.

[0014] In the aforementioned chuck assembly, a positioning hole is vertically formed on the top wall of the base, and this positioning hole connects to the aforementioned mounting hole. A long, narrow connecting groove is provided on the side wall of the shaft, extending axially along the connecting shaft. The end of the connecting groove furthest from the positioning sleeve is open. A positioning pin, matching the shape and size of the connecting groove, is vertically fixed within the positioning hole, with its lower end inserted into the connecting groove. The cooperation between the positioning pin and the connecting groove creates a stable circumferential fit between the base and the corresponding connecting shaft, improving the stability of the base's swing.

[0015] In the chuck assembly described above, the positioning hole is a threaded hole, and the outer wall of the positioning pin is provided with an external thread that mates with the threaded hole.

[0016] Compared with existing technologies, this chuck assembly has the following advantages:

[0017] 1. With the cooperation of components or structures such as the base frame, machine base, and arc groove, the rotary motor swings synchronously with the support. During the swinging process of the support, the rotary motor still drives the chuck body to rotate around its own axis through the belt drive structure. This increases the workpiece processing range by increasing the rotation angle of the chuck body, making it highly practical.

[0018] 2. The base is rotated with the frame via a slewing bearing, thereby transferring part of the weight of the base and rotary motor assembly to the frame, reducing the stress on the connecting shaft and enhancing the working stability and lifespan of the chuck assembly. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the chuck assembly.

[0020] Figure 2 This is a cross-sectional view of the chuck assembly.

[0021] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0022] In the diagram, 1 is the support; 2 is the rotary motor; 3 is the chuck body; 4 is the rotating shaft; 5 is the belt; 6 is the base frame; 6a is the arc groove; 6b is the connecting hole; 6c is the limit seat; 7 is the connecting shaft; 7a is the shaft body; 7b is the connecting groove; 8 is the swing motor; 9 is the machine base; 10 is the bearing; 11 is the positioning sleeve; 11a is the positioning seat; 12 is the slewing bearing; 13 is the bolt; and 14 is the positioning pin. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figure 1As shown, this chuck assembly includes a support 1, a rotary motor 2, a chuck body 3, and a rotating shaft 4 rotatably mounted on the support 1.

[0025] in,

[0026] The rotating shaft 4 is rotatably coupled to the support 1 via ball bearings; the upper end of the rotating shaft 4 is fixedly connected to the chuck body 3, and the rotating motor 2 is connected to the lower end of the rotating shaft 4 via a belt drive structure. Specifically, the belt drive structure includes a driven pulley fixed to the lower end of the rotating shaft 4 and a driving pulley fixed to the main shaft of the rotating motor 2. The driving pulley and the driven pulley are connected by a belt 5, and the belt 5 is horizontally arranged.

[0027] like Figure 1 As shown, this chuck assembly also includes a U-shaped base frame 6, with the support 1 located within the base frame 6. Both ends of the base frame 6 are horizontally rotatable connecting shafts 7, and the two connecting shafts 7 are coaxially arranged. The adjacent ends of the two connecting shafts 7 are fixed to the support 1, and the distant ends of the two connecting shafts 7 extend out of the base frame 6. Preferably, the support 1 is also U-shaped, in which case the two connecting shafts 7 are respectively fixed to both ends of the support 1, facilitating design and assembly.

[0028] The base frame 6 has a swing motor 8 and a rotary motor 2 respectively installed on the outer sides of both ends. The rotary motor 2 is fixed to the corresponding connecting shaft 7 via a base 9; that is, both the rotary motor 2 and the corresponding connecting shaft 7 are fixed to the base 9. The base frame 6 has an arc groove 6a for the belt 5 to pass through, and the arc groove 6a is coaxial with the connecting shaft 7. The swing motor 8 is fixed to the base frame 6 and is used to drive the other connecting shaft 7 to rotate.

[0029] In use, the workpiece is clamped by the chuck body 3; the rotary motor 2 drives the chuck body 3 to rotate through the rotary shaft 4 and belt drive structure; the swing motor 8 drives the chuck body 3 to swing through the connecting shaft 7 to realize the processing of the workpiece at multiple positions.

[0030] With the cooperation of components or structures such as the base frame 6, machine base 9, and arc groove 6a, the rotary motor 2 swings synchronously with the support 1. During the swinging process of the support 1, the rotary motor 2 still drives the chuck body 3 to rotate around its own axis through the belt drive structure. This increases the workpiece processing range by increasing the rotation angle of the chuck body 3, making it highly practical.

[0031] In this embodiment,

[0032] The oscillating motor 8 is also connected to the corresponding connecting shaft 7 via a belt drive structure. Of course, the oscillating motor 8 can also be directly connected to the corresponding connecting shaft 7 via a coupling.

[0033] The rotational fit between the connecting shaft 7 and the base frame 6 is as follows: Both ends of the base frame 6 have horizontally extending connecting holes 6b, and the two connecting shafts 7 are respectively inserted into the two connecting holes 6b. Each connecting hole 6b contains a bearing 10, which is a common rolling bearing. The bearing 10 includes an inner ring and an outer ring, and the outer ring and inner ring of the bearing 10 are respectively fixedly connected to the base frame 6 and the corresponding connecting shaft 7. This design has advantages such as simple structure and convenient installation. Preferably, both the inner and outer rings of the bearing 10 are fixedly connected to the connecting shaft 7 and the base frame 6 by an interference fit.

[0034] To further explain, an annular limiting seat 6c is formed on the inner wall of the connecting hole 6b, and the limiting seat 6c and the connecting hole 6b are coaxially arranged. A positioning sleeve 11 is also coaxially fixed inside the connecting hole 6b, with two positioning sleeves 11 respectively fitted onto the two connecting shafts 7, and both limiting seats 6c are positioned between the two positioning sleeves 11. The two ends of the outer ring of the bearing 10 are respectively pressed against the corresponding limiting seat 6c and the corresponding positioning sleeve 11 to axially stabilize and lock the bearing 10, improving the rotational stability of the connecting shaft 7, thereby improving the workpiece machining quality and precision.

[0035] Furthermore, the end of the positioning sleeve 11 furthest from the corresponding bearing 10 extends out of the corresponding connecting hole 6b. An annular positioning seat 11a is formed on the outer wall of the positioning sleeve 11. The positioning seat 11a and the positioning sleeve 11 are coaxially arranged, and the positioning seat 11a presses against the outer wall of the base frame 6. The positioning seat 11a serves as an installation limit, facilitating the installation of the positioning sleeve 11.

[0036] like Figure 1 As shown, a slewing bearing 12 is provided between the base 9 and the corresponding positioning sleeve 11, and the slewing bearing 12 and the bearing 10 are coaxially arranged. The slewing bearing 12 is an existing product, which also includes an inner ring and an outer ring. The inner ring and outer ring of the slewing bearing 12 are respectively pressed and fixed on the corresponding positioning sleeve 11 and the base 9. The base 9 forms a rotational engagement with the base frame 6 through the slewing bearing 12, thereby transferring part of the weight of the assembly of the base 9 and the rotary motor 2 to the base frame 6, so as to reduce the stress on the connecting shaft 7, and at the same time enhance the working stability and service life of the chuck assembly.

[0037] To further explain, the inner ring of the slewing bearing 12 has a ring of axially penetrating through holes, and the positioning seat 11a has a ring of through holes, with the number of through holes 2 on the same positioning seat 11a being the same as that of through holes 1. Each through hole 1 is fitted with a bolt 13, the shank of which passes through the corresponding through hole 2 and is screwed into the base frame 6, with the head of the bolt 13 pressing against the inner ring of the slewing bearing 12. The slewing bearing 12 and the corresponding positioning sleeve 11 are fixed together by the same ring of bolts 13, offering advantages such as simple structure and convenient installation.

[0038] The connection between the connecting shaft 7 and the base 9 is as follows: A horizontal mounting hole is formed through the base 9. The connecting shaft 7 corresponding to the base 9 has a shaft body 7a that matches the mounting hole, and the shaft body 7a is inserted and fixed within the mounting hole. Preferably, the shaft body 7a and the inner wall of the mounting hole are in circumferential contact, and the shaft body 7a and the base 9 are fixed together by welding. Further, a positioning hole is vertically formed on the top wall of the base 9, and this positioning hole connects to the aforementioned mounting hole. A long, narrow connecting groove 7b is provided on the side wall of the shaft body 7a. The length of the connecting groove 7b extends axially along the connecting shaft 7, and the end of the connecting groove 7b away from the positioning sleeve 11 is open. A positioning pin 14, whose shape and size match the connecting groove 7b, is vertically fixed within the positioning hole, and the positioning pin 14 is inserted into the connecting groove 7b. The positioning pin 14 and the connecting groove 7b cooperate to form a stable circumferential fit between the base 9 and the corresponding connecting shaft 7, improving the swing stability of the base 9. The preferred type of positioning hole is a threaded hole, and the outer wall of the positioning pin 14 is provided with an external thread that mates with the threaded hole, so as to facilitate the disassembly and assembly of the positioning pin 14.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A chuck assembly, comprising a support (1), a rotary motor (2), a chuck body (3), and a rotating shaft (4) rotatably mounted on the support (1), wherein the upper end of the rotating shaft (4) is fixedly connected to the chuck body (3), and the rotary motor (2) is connected to the lower end of the rotating shaft (4) via a belt drive structure, the belt drive structure comprising a horizontally arranged belt (5), characterized in that, The chuck assembly also includes a U-shaped base frame (6), and a support (1) is located inside the base frame (6); both ends of the base frame (6) are horizontally rotatably provided with connecting shafts (7), and the two connecting shafts (7) are coaxially arranged; the adjacent ends of the two connecting shafts (7) are fixedly connected to the support (1), and the distant ends of the two connecting shafts (7) extend out of the base frame (6); the outer sides of both ends of the base frame (6) are respectively provided with a swing motor (8) and the aforementioned rotary motor (2), the rotary motor (2) is fixedly connected to the corresponding connecting shaft (7) through the base (9), the base frame (6) is provided with an arc groove (6a) for the belt (5) to pass through, and the arc groove (6a) is coaxially arranged with the connecting shaft (7), the swing motor (8) is fixed on the base frame (6), and the swing motor (8) is used to drive the other connecting shaft (7) to rotate.

2. The chuck assembly according to claim 1, characterized in that, The base frame (6) has horizontally penetrating connecting holes (6b) at both ends, and two connecting shafts (7) are respectively inserted in the two connecting holes (6b). Each of the two connecting holes (6b) is provided with a bearing (10). The bearing (10) includes an inner ring and an outer ring, and the outer ring of the bearing (10) and the inner ring of the bearing (10) are respectively fixed to the base frame (6) and the corresponding connecting shaft (7).

3. The chuck assembly according to claim 2, characterized in that, A ring-shaped limiting seat (6c) is formed on the inner wall of the connecting hole (6b). A positioning sleeve (11) is also fixed inside the connecting hole (6b). The two positioning sleeves (11) are respectively fitted on the two connecting shafts (7), and the two limiting seats (6c) are both located between the two positioning sleeves (11). The two ends of the outer ring of the bearing (10) are respectively pressed on the corresponding limiting seat (6c) and the corresponding positioning sleeve (11).

4. The chuck assembly according to claim 3, characterized in that, The end of the positioning sleeve (11) away from the corresponding bearing (10) extends out of the corresponding connecting hole (6b); a slewing bearing (12) is provided between the machine base (9) and the corresponding positioning sleeve (11). The slewing bearing (12) and the bearing (10) are coaxially arranged, and the inner ring and outer ring of the slewing bearing (12) are respectively pressed and fixed on the corresponding positioning sleeve (11) and the machine base (9).

5. The chuck assembly according to claim 4, characterized in that, The outer wall of the positioning sleeve (11) is formed with a ring-shaped positioning seat (11a), and the positioning seat (11a) presses against the outer wall of the base frame (6).

6. The chuck assembly according to claim 5, characterized in that, The inner ring of the slewing bearing (12) has a ring of through holes axially through it. The positioning seat (11a) has a ring of through holes 2, and the number of through holes 2 on the same positioning seat (11a) is the same as that of through holes 1. Each through hole 1 is fitted with a bolt (13). The shank of the bolt (13) passes through the corresponding through hole 2 and is screwed into the base frame (6). The head of the bolt (13) is pressed against the inner ring of the slewing bearing (12).

7. The chuck assembly according to claim 1, characterized in that, A mounting hole is horizontally penetrating the base (9), and a shaft (7a) corresponding to the base (9) has a shaft body (7a) that matches the mounting hole, and the shaft body (7a) is inserted and fixed in the mounting hole.

8. The chuck assembly according to claim 7, characterized in that, A positioning hole is vertically opened on the top wall of the base (9), and the positioning hole is connected to the above-mentioned mounting hole; a long strip-shaped connecting groove (7b) is provided on the side wall of the shaft (7a), the length of the connecting groove (7b) extends along the axial direction of the connecting shaft (7), the end of the connecting groove (7b) away from the positioning sleeve (11) is open, and a positioning pin (14) with a shape and size matching the connecting groove (7b) is vertically fixed in the positioning hole, and the lower end of the positioning pin (14) is inserted into the connecting groove (7b).

9. The chuck assembly according to claim 8, characterized in that, The positioning hole is a threaded hole, and the outer wall of the positioning pin (14) is provided with an external thread that mates with the threaded hole.

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