Machine tool chuck convenient to replace

Abstract

The utility model discloses a machine tool chuck convenient to replace, which belongs to the technical field of bearing assembly tools and comprises an assembly disc, a retainer fixing frame is fixedly connected to the inner wall of the assembly disc, fixed ejection devices are arranged on two sides of the outer surface of the assembly disc, and an auxiliary clamping device is arranged at the bottom of the retainer fixing frame. The fixed ejection device comprises a U-shaped frame and a connecting plate, and the outer surface of the U-shaped frame is fixedly connected with the outer surface of the assembly disc. According to the machine tool chuck convenient to replace, through the arrangement of the fixed ejection device, under the action of a first threaded rod, a first clamping ball can be driven, so that the first clamping ball can fix a bearing outer ring, the situation that the bearing outer ring is influenced in the inner ring installation process is avoided, under the action of a second threaded rod, an ejection ball can move, and the bearing outer ring can be conveniently replaced. And therefore, the mounted bearing can be ejected out of the assembling disc, and the bearing can be taken out conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool chucks, in particular to a machine tool chuck which is convenient to replace. Background Art

[0002] A chuck is a mechanical device used on machine tools to clamp workpieces. It is a machine tool accessory that clamps and positions the workpiece by radial movement of movable jaws evenly distributed on the chuck body. A three-jaw chuck is one of the common chucks that can be used to clamp objects.

[0003] The prior art machine tool chuck mainly includes a chuck body, a movable jaw and a jaw driving mechanism. When in use, the movable jaw is installed with the jaw driving mechanism on the chuck body, and then the jaw is driven to move for clamping under the action of the jaw driving mechanism.

[0004] However, in actual use, when the claws are worn and the clamping effect is reduced, they need to be replaced, and the bevel gear used for driving needs to be rotated with the assistance of external tools. In the absence of external special tools, the turntable needs to be rotated manually. Due to the small gap between the turntable and the chuck body, replacement is very time-consuming and laborious. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a machine tool chuck that is easy to replace, which solves the problem that when the jaws are worn and the clamping effect is reduced during actual use, they need to be replaced, and the bevel gear used for driving needs to be assisted by external tools for operation and rotation. In the absence of external special tools, the turntable needs to be manually rotated. Since the gap between the turntable and the chuck body is small, the replacement is very time-consuming and labor-intensive.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a machine tool chuck that is easy to replace, comprising a chuck body, a claw slidingly engaged with the top of the chuck body, a turntable is arranged inside the chuck body, a ring gear is fixedly connected to the bottom of the turntable, a bevel gear is rotatably arranged on the inner wall of the chuck body, the bevel gear and the ring gear are meshedly connected, an auxiliary operation structure is arranged at the bottom of the outer surface of the turntable, an auxiliary protection structure is arranged at the bottom of the auxiliary operation structure, the auxiliary operation structure also includes a circular clamping frame, the outer surface of the circular clamping frame is fixedly connected to the outer surface of the turntable, a circular clamping block is clamped on the inner wall of the circular clamping frame, the bottom of the circular clamping block is fixedly connected to a connecting round rod, and the bottom end of the connecting round rod is fixedly connected to an operating round block.

[0009] As a further solution of the utility model: a first plug hole is formed on the inner wall of the circular card frame, and a second plug hole is formed on the inner wall of the circular card block. The first plug hole and the second plug hole are aligned when the circular card frame and the circular card block are connected.

[0010] As a further solution of the utility model: a threaded rod is inserted into the inner wall of the first insertion hole and the second insertion hole, and a fixing nut is threadedly connected to the outer surface of the threaded rod.

[0011] As a further solution of the utility model: the outer surface of the operating round block is fixedly connected with three rectangular rods arranged equidistantly in a circumferential direction, and the inner wall of one of the rectangular rods is threadedly connected with a threaded extrusion rod.

[0012] As a further solution of the utility model: a rubber round block is fixedly connected to one end of the outer surface of the threaded extrusion rod, and a rubber ring block is fixedly connected to the bottom of the outer surface of the rotating disk.

[0013] As a further solution of the utility model: the auxiliary protection structure includes a positioning round block, the positioning round block is fixedly connected to the operating round block, the inner wall of the chuck body is fixedly connected with a positioning round frame, the outer surface of the positioning round block is clamped with a positioning round frame, one side of the outer surface of the positioning round frame is fixedly connected with a protective plate, the inner wall of the protective plate and the inner wall of the positioning round frame are provided with round holes, the inner wall of the round hole is inserted with a threaded clamping rod, the bottom of the outer surface of the positioning round block is provided with a threaded clamping hole, and the threaded clamping rod and the threaded clamping hole are detachably threadedly connected.

[0014] As a further solution of the utility model: a clamping round rod is fixedly connected to the outer surface of the protective plate, and the clamping round rod and the clamping round frame can be detachably clamped.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The machine tool chuck which is easy to replace is provided with an auxiliary operation structure. Under the action of the circular clamping block and the circular clamping frame, the operating circular block can be fixedly connected with the bottom of the turntable. When the clamping claw needs to be replaced, it is only necessary to rotate the operating circular block to drive the turntable at the bottom to rotate, so that the clamping claw can move to the outermost part of the spiral block at the top of the turntable for disassembly.

[0018] 2. The machine tool chuck that is easy to replace is provided with a threaded insert rod and a fixing nut, so that the threaded insert rod can be inserted into the second insertion hole on the circular clamp block and the first insertion hole on the circular clamp frame, thereby fixing the circular clamp block and the circular clamp frame.

[0019] 3. The machine tool chuck which is easy to replace can be provided with an auxiliary protection structure. Under the action of the clamping round block and the clamping round frame, the protection plate can be installed, and then can be auxiliary fixed under the action of the clamping round rod and the clamping round frame to prevent rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the chuck body of the utility model;

[0022] Figure 3 It is a three-dimensional structural diagram of the turntable of the utility model;

[0023] Figure 4 It is a three-dimensional structural diagram of the operating circle of the utility model;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the protective plate of the utility model.

[0025] In the figure: 1. chuck body; 2. clamping claw; 3. turntable; 4. ring gear; 5. bevel gear; 6. auxiliary operation structure; 61. round clamp frame; 62. first plug hole; 63. round clamp block; 64. second plug hole; 65. threaded plug rod; 66. fixing nut; 67. connecting round rod; 68. operating round block; 69. rectangular rod; 610. threaded extrusion rod; 611. rubber round block; 612. rubber ring block; 7. auxiliary protection structure; 71. clamping round frame; 72. clamping round block; 73. threaded clamp hole; 74. clamping round frame; 75. protection plate; 76. round plug hole; 77. threaded clamp rod; 78. clamping round rod. DETAILED DESCRIPTION

[0026] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0027] like Figure 1-4As shown, the utility model provides a technical solution: a machine tool chuck that is easy to replace, including a chuck body 1, a claw 2 is slidably clamped on the top of the chuck body 1, a turntable 3 is arranged inside the chuck body 1, a spiral block is fixedly connected to the top of the turntable 3, a spiral groove is opened at the bottom of the claw 2, the turntable 3 and the claw 2 are connected by the spiral block and the spiral groove. This component belongs to the prior art and is not drawn in the figure. A ring gear 4 is fixedly connected to the bottom of the turntable 3, and a bevel gear 5 is rotatably arranged on the inner wall of the chuck body 1. By arranging the bevel gear 5 and the ring gear 4, the turntable 3 can be driven to rotate, and the bevel gear 5 and the ring gear 4 can be connected. 4 are meshedly connected, an auxiliary operation structure 6 is provided at the bottom of the outer surface of the turntable 3, an auxiliary protection structure 7 is provided at the bottom of the auxiliary operation structure 6, the auxiliary operation structure 6 also includes a circular card frame 61, the outer surface of the circular card frame 61 is fixedly connected to the outer surface of the turntable 3, and the inner wall of the circular card frame 61 is clamped with a circular card block 63. By arranging the circular card block 63 and the circular card frame 61, a connecting round rod 67 can be installed, the bottom of the circular card block 63 is fixedly connected to the connecting round rod 67, and the bottom end of the connecting round rod 67 is fixedly connected to an operating round block 68. By arranging the operating round block 68, it is convenient to operate the turntable 3.

[0028] Specifically, Figure 2 and Figure 3 and Figure 4 As shown, the inner wall of the circular card frame 61 is provided with a first plug hole 62, and the inner wall of the circular card block 63 is provided with a second plug hole 64. The first plug hole 62 and the second plug hole 64 are aligned when the circular card frame 61 and the circular card block 63 are engaged. By setting the first plug hole 62 and the second plug hole 64, other components can be fixed together. The inner walls of the first plug hole 62 and the second plug hole 64 are provided with a threaded rod 65. The outer surface of the threaded rod 65 is threadedly connected with a fixing nut 66. By setting the threaded rod 65 and the fixing nut The nut 66 can fix the circular clamping block 63 and the circular clamping frame 61. The outer surface of the operating circular block 68 is fixedly connected to three rectangular rods 69 arranged equidistantly in a circumferential direction. The inner wall of one of the rectangular rods 69 is threadedly connected to a threaded extrusion rod 610. One end of the outer surface of the threaded extrusion rod 610 is fixedly connected to a rubber circular block 611. The bottom of the outer surface of the turntable 3 is fixedly connected to a rubber ring block 612. By setting the rubber circular block 611 and the rubber ring block 612, the operating circular block 68 can be fixed.

[0029] Specifically, Figure 4 and Figure 5As shown, the auxiliary protective structure 7 includes a positioning circular block 72, which is fixedly connected to the operating circular block 68, and the inner wall of the chuck body 1 is fixedly connected with a clamping circular frame 71, and the outer surface of the positioning circular block 72 is clamped with a positioning circular frame 74, and one side of the outer surface of the positioning circular frame 74 is fixedly connected with a protective plate 75. By setting the positioning circular frame 74 and the positioning circular block 72, the protective plate 75 can be fixed, and the inner wall of the protective plate 75 and the inner wall of the positioning circular frame 74 are provided with a circular plug hole 76, and the inner wall of the circular plug hole 76 is inserted with a threaded clamping rod 77, and the bottom of the outer surface of the positioning circular block 72 is provided with a threaded clamping hole 73, and the threaded clamping rod 77 is detachably threadedly connected to the threaded clamping hole 73. By setting the threaded clamping rod 77, the positioning circular block 72 and the positioning circular frame 74 can be fixed, and the outer surface of the protective plate 75 is fixedly connected with a clamping circular rod 78, and the clamping circular rod 78 is detachably clamped to the clamping circular frame 71.

[0030] The working principle of the utility model is:

[0031] S1, insert the round clamp block 63 into the round clamp frame 61, and then insert the threaded rod 65 into the inner wall of the first plug hole 62 and the second plug hole 64, then fix the fixing nut 66 with the threaded rod 65, and then rotate the threaded extrusion rod 610, so that the rubber round block 611 can be fixed with the rubber ring block 612, so as to avoid the gap between the round clamp block 63 and the round clamp frame 61 and cause shaking;

[0032] S2, at this time, the operating ball 68 is rotated so that the operating ball 68 can drive the turntable 3 to rotate, and then the claw 2 is rotated to the edge of the turntable 3, so as to facilitate its removal;

[0033] S3, the locking circular frame 74 is locked with the locking circular block 72, at this time the locking circular rod 78 can be fixed with the locking circular frame 71, and the threaded clamping rod 77 is rotated so that the threaded clamping rod 77 can be rotatably fixed with the threaded clamping hole 73.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0035] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A machine tool chuck that is easily replaceable, comprising a chuck body (1), characterized in that: The top of the chuck body (1) is slidably engaged with a claw (2); a rotating disk (3) is arranged inside the chuck body (1); a ring gear (4) is fixedly connected to the bottom of the rotating disk (3); a bevel gear (5) is rotatably arranged on the inner wall of the chuck body (1); the bevel gear (5) is meshingly connected to the ring gear (4); an auxiliary operation structure (6) is arranged at the bottom of the outer surface of the rotating disk (3); an auxiliary protection structure (7) is arranged at the bottom of the auxiliary operation structure (6); the auxiliary operation structure (6) further comprises a circular clamping frame (61); the outer surface of the circular clamping frame (61) is fixedly connected to the outer surface of the rotating disk (3); a circular clamping block (63) is clamped on the inner wall of the circular clamping frame (61); a connecting round rod (67) is fixedly connected to the bottom of the circular clamping block (63); an operating round block (68) is fixedly connected to the bottom end of the connecting round rod (67).

2. A machine tool chuck that is easily replaceable according to claim 1, characterized in that: The inner wall of the circular card frame (61) is provided with a first insertion hole (62), and the inner wall of the circular card block (63) is provided with a second insertion hole (64). The first insertion hole (62) and the second insertion hole (64) are aligned when the circular card frame (61) and the circular card block (63) are engaged.

3. A machine tool chuck that is easily replaceable according to claim 2, characterized in that: A threaded rod (65) is inserted into the inner walls of the first insertion hole (62) and the second insertion hole (64), and a fixing nut (66) is threadedly connected to the outer surface of the threaded rod (65).

4. The easily replaceable machine tool chuck according to claim 1, characterized in that: The outer surface of the operating round block (68) is fixedly connected with three rectangular rods (69) arranged equidistantly in a circumferential manner, and the inner wall of one of the rectangular rods (69) is threadedly connected with a threaded extrusion rod (610).

5. The conveniently replaceable machine tool chuck according to claim 4, characterized in that: A rubber round block (611) is fixedly connected to one end of the outer surface of the threaded extrusion rod (610), and a rubber ring block (612) is fixedly connected to the bottom of the outer surface of the rotating disk (3).

6. The easily replaceable machine tool chuck according to claim 1, characterized in that: The auxiliary protection structure (7) comprises a positioning circular block (72), the positioning circular block (72) is fixedly connected to the operating circular block (68), the inner wall of the chuck body (1) is fixedly connected with a positioning circular frame (71), the outer surface of the positioning circular block (72) is clamped with a positioning circular frame (74), one side of the outer surface of the positioning circular frame (74) is fixedly connected with a protection plate (75), the inner wall of the protection plate (75) and the inner wall of the positioning circular frame (74) are provided with a circular plug hole (76), the inner wall of the circular plug hole (76) is inserted with a threaded clamping rod (77), the outer surface bottom of the positioning circular block (72) is provided with a threaded clamping hole (73), and the threaded clamping rod (77) and the threaded clamping hole (73) are detachably threadedly connected.

7. The easily replaceable machine tool chuck according to claim 6, characterized in that: The outer surface of the protection plate (75) is fixedly connected with a clamping round rod (78), and the clamping round rod (78) is detachably clamped to the clamping round frame (71).

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