Universal ball lock floating power chuck

Abstract

The utility model belongs to lathe fixture technical field especially is a kind of universal ball lock floating type power chuck. Including main part, the inside movable setting of main part is provided with plunger, the inside movable sleeve of plunger is provided with several main shaft balls, the side movable sleeve of main part is provided with the jaw driver consistent with the number of main shaft ball, jaw driver one end penetrates main shaft ball and extends to the side of plunger. The utility model realizes that jaw driver self-adapting floating by plunger, main shaft ball linkage mechanism, can automatically compensate the clamping deviation of irregular forging and casting, ensure the machining coaxial degree, its spherical surface cooperation structure and inclined pin floating mechanism synergistic effect, can stabilize the clamping conical surface blank, the setting of sealing ring has dust sealing protection function, protects spherical pair movement precision, prolongs service life, the unique wedge-shaped force increasing design makes clamping force significantly improve, especially suitable for high-speed working condition under high-efficiency machining, with wide application prospect.

Description

Technical Field

[0001] This utility model relates to the field of machine tool fixture technology, specifically a universal ball lock floating power chuck. Background Technology

[0002] A chuck is a machine tool fixture specifically designed for machining the internal and external diameters of forged and cast parts, featuring floating self-centering and strong clamping characteristics. Its core applications include batch machining of automotive parts (such as cross shafts and boss forks), gas turbines, refrigeration valves, and hydraulic components (manifolds, multi-way connectors). However, existing chucks still have the following shortcomings in use:

[0003] Existing chucks generally suffer from insufficient self-centering capability and inability to automatically compensate for workpiece deviations when clamping irregular forgings and castings. They also exhibit poor clamping stability and insufficient clamping force when clamping conical blanks, resulting in low machining efficiency at high speeds.

[0004] Therefore, we propose a universal ball lock floating power chuck to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a universal ball lock floating power chuck, which solves the problems mentioned in the background art, such as insufficient self-centering ability, inability to automatically compensate for workpiece deviations, insufficient clamping force, clamping deformation, and poor stability.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A universal ball lock floating power chuck includes a main body, a plunger is movably disposed inside the main body, a plurality of spindle balls are movably sleeved inside the plunger, and a chuck driver with the same number of spindle balls is movably sleeved on one side of the main body, one end of the chuck driver passing through the spindle balls and extending to one side of the plunger.

[0010] Furthermore, several spindle balls are evenly spaced, and a guide key is movably nested on the section where the chuck driver is sleeved with the spindle balls. A groove is provided on the inner wall of the spindle balls that is sleeved with one end of the guide key.

[0011] Furthermore, a bearing race is fixedly nested on one side of the main body, with the same number of bearing balls as the main spindle balls and their positions being one-to-one. The chuck driver is provided with a spherical segment that fits into the inside of the bearing race.

[0012] Furthermore, the spherical segment has a through hole inside, and two inclined pins are installed inside the through hole, with the two inclined pins connected by a spring.

[0013] Furthermore, the bearing race is symmetrically provided with two slots that respectively engage with the opposite ends of the two inclined pins.

[0014] Furthermore, the end of the claw actuator extending to the plunger side is connected to a press cover via a spring.

[0015] Furthermore, the claw driver has a clamping block at the end away from the pressing cover, and the clamping block has a T-slot inside and is connected to a T-nut.

[0016] Furthermore, a sealing ring is provided inside the bearing housing ring, and the sealing ring is sleeved on the chuck driver and located between the spherical segment and the clamping block.

[0017] Furthermore, a rear cover plate is fixedly provided on one side of the main body.

[0018] Furthermore, a drive shaft with one end extending through to one side of the rear cover plate is provided at the center of one side of the plunger, and a cover plate opposite to the drive shaft is provided on the side of the main body away from the rear cover plate.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, this utility model provides a universal ball lock floating power chuck, which has the following beneficial effects:

[0021] This invention utilizes a plunger and spindle ball linkage mechanism to achieve adaptive floating of the chuck driver, which can automatically compensate for clamping deviations of irregular forged and cast parts, ensuring machining coaxiality. Its spherical mating structure and inclined pin floating mechanism work together to stably clamp conical blanks. The sealing ring provides dust sealing protection, protects the motion accuracy of the spherical pair, and extends service life. The unique wedge-shaped force-enhancing design significantly improves the clamping force, making it particularly suitable for high-efficiency machining under high-speed conditions and with broad application prospects. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0023] Figure 2 This is a side view of the main structure of this utility model;

[0024] Figure 3 This is an exploded view of the internal structure of the main body of this utility model;

[0025] Figure 4 This is an exploded view of the internal structure of the main body of this utility model;

[0026] Figure 5 This is a cross-sectional view of the main structure of this utility model.

[0027] In the diagram: 1. Main body; 2. Piston; 201. Drive shaft; 3. Spindle ball; 301. Slide groove; 4. Claw driver; 401. Spherical section; 402. Clamping block; 5. Guide key; 6. Bearing seat ring; 601. Bar hole; 602. Sealing ring; 7. Angled pin; 701. Spring 1; 8. Press cover; 801. Spring 2; 9. T-nut; 10. Rear cover plate; 11. Cover plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example

[0030] like Figure 1-5 As shown, an embodiment of the present invention provides a universal ball lock floating power chuck, comprising a main body 1, a plunger 2 movably disposed inside the main body 1, a plurality of spindle balls 3 movably sleeved inside the plunger 2, and a chuck driver 4, the same number as the spindle balls 3, movably sleeved on one side of the main body 1, with one end of the chuck driver 4 penetrating through the spindle balls 3 and extending to one side of the plunger 2.

[0031] The linkage structure between the plunger 2 and the spindle ball 3 and the chuck driver 4 enables the chuck driver 4 to automatically compensate for positional deviations when clamping irregular workpieces, achieving a ±5° floating self-centering function.

[0032] like Figure 1-4 As shown, in some embodiments, a plurality of the spindle balls 3 are distributed at equal intervals, and a guide key 5 is movably nested on a section of the chuck driver 4 that is sleeved with the spindle balls 3. A groove 301 is provided on the inner wall of the spindle balls 3 that is sleeved with one end of the guide key 5.

[0033] By sliding the guide key 5 within the groove 301 of the spindle ball 3, the axial movement of the plunger 2 is converted into the radial movement of the pawl driver 4, while allowing the pawl driver 4 to maintain uninterrupted power transmission when floating.

[0034] like Figure 5 As shown, in some embodiments, a bearing race 6, which is the same number as the spindle balls 3 and is positioned opposite to each other, is fixedly nested on one side of the main body 1, and the pawl driver 4 is provided with a spherical segment 401 that fits into the inside of the bearing race 6.

[0035] The spherical segment 401 forms a floating fulcrum by fitting with the spherical surface within the bearing housing 6, allowing the chuck driver 4 to deflect in multiple directions and adapt to the stable clamping of a 10° conical workpiece.

[0036] like Figure 3-5 As shown, in some embodiments, the spherical segment 401 has a through hole inside and two inclined pins 7 are provided inside the through hole, and the two inclined pins 7 are connected by a spring 701.

[0037] The inclined pin 7 slides in the through hole by the preload of spring 701. When the clamping block 402 contacts the workpiece, it automatically adjusts the tilt angle to achieve dynamic balance floating clamping.

[0038] like Figure 4 As shown, in some embodiments, the bearing race 6 is symmetrically provided with two slots 601 that are respectively fitted to the opposite ends of the two inclined pins 7.

[0039] The bearing housing ring has 6 holes (601) to limit the stroke of the inclined pin (7), ensuring that the floating range is controlled within 5° and preventing excessive deflection from affecting machining accuracy.

[0040] like Figure 5 As shown, in some embodiments, the end of the claw actuator 4 extending to one side of the plunger 2 is connected to a press cover 8 via a spring 801.

[0041] The pressing cover 8 provides a reset force through spring 801, which quickly rebounds the chuck driver 4 when the clamp is released, improving the efficiency of changing the clamp.

[0042] like Figure 5 As shown, in some embodiments, the end of the claw driver 4 away from the pressing cover 8 is provided with a clamping block 402, and the interior of the clamping block 402 is provided with a T-shaped groove and connected with a T-shaped nut 9.

[0043] The T-nut 9 slides along the groove to adjust the position of the clamping block 402, enhancing its adaptability to workpieces of different diameters and improving the efficiency of clamping force transmission.

[0044] like Figure 5 As shown, in some embodiments, a sealing ring 602 is provided inside the bearing race 6, and the sealing ring 602 is sleeved on the chuck driver 4 and located between the spherical segment 401 and the clamping block 402.

[0045] The sealing ring 602 isolates dust between the spherical section 401 and the clamping block 402, protecting the motion accuracy of the spherical pair and extending its service life.

[0046] like Figure 1-2 As shown, in some embodiments, a rear cover plate 10 is fixedly provided on one side of the main body 1.

[0047] The rear cover plate 10 encloses the drive mechanism and together with the cover plate 11, forms a double dust barrier to adapt to the harsh environment of the forging workshop.

[0048] like Figure 2-5 As shown, in some embodiments, a drive shaft 201 with one end extending through to one side of the rear cover plate 10 is provided at the center of one side of the plunger 2, and a cover plate 11 opposite to the drive shaft 201 is provided on the side of the main body 1 away from the rear cover plate 10.

[0049] The drive shaft 201 passes through the rear cover plate 10 and connects to an external power source. The clamping force output can be greatly improved through the wedge-shaped force-enhancing structure of the plunger 2.

[0050] In summary, the adaptive floating of the chuck driver 4, achieved through the linkage mechanism of plunger 2 and spindle ball 3, can automatically compensate for clamping deviations of irregular forged and cast parts, ensuring machining coaxiality. Its spherical mating structure, in conjunction with the floating mechanism of inclined pin 7, can stably clamp conical blanks. The setting of sealing ring 602 has a dust sealing protection function, protecting the motion accuracy of the spherical pair and extending its service life. The unique wedge-shaped force-enhancing design significantly improves the clamping force, making it particularly suitable for high-efficiency machining under high-speed conditions, and has broad application prospects.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A universal ball lock floating power chuck, comprising a main body (1), characterized in that: The main body (1) is equipped with a plunger (2) inside, and a number of spindle balls (3) are movably fitted inside the plunger (2). A pawl driver (4) with the same number of spindle balls (3) is movably fitted on one side of the main body (1). One end of the pawl driver (4) passes through the spindle balls (3) and extends to one side of the plunger (2).

2. The universal ball lock floating power chuck according to claim 1, characterized in that: Several spindle balls (3) are evenly spaced. A guide key (5) is movably nested on a section of the chuck driver (4) that is connected to the spindle ball (3). A groove (301) is provided on the inner wall of the spindle ball (3) that is connected to one end of the guide key (5).

3. The universal ball lock floating power chuck according to claim 1, characterized in that: One side of the main body (1) is fixedly nested with bearing races (6) that are the same number as the main spindle balls (3) and are positioned opposite each other. The pawl driver (4) is provided with a spherical segment (401) that fits into the inside of the bearing race (6).

4. The universal ball lock floating power chuck according to claim 3, characterized in that: The spherical segment (401) has a through hole inside and two inclined pins (7) are provided inside the through hole. The two inclined pins (7) are connected by a spring (701).

5. A universal ball lock floating power chuck according to claim 3, characterized in that: The bearing race (6) is symmetrically provided with two slots (601) that are respectively connected to the opposite ends of the two inclined pins (7).

6. The universal ball lock floating power chuck according to claim 1, characterized in that: The claw actuator (4) extends to one end of the plunger (2) and is connected to a press cover (8) via a spring (801).

7. A universal ball lock floating power chuck according to claim 1, characterized in that: The claw driver (4) is provided with a clamping block (402) at one end away from the pressing cover (8). The clamping block (402) has a T-slot inside and is connected to a T-nut (9).

8. A universal ball lock floating power chuck according to claim 3, characterized in that: The bearing race (6) is provided with a sealing ring (602) inside. The sealing ring (602) is sleeved on the chuck driver (4) and located between the spherical section (401) and the clamping block (402).

9. A universal ball lock floating power chuck according to claim 1, characterized in that: A rear cover plate (10) is fixedly installed on one side of the main body (1).

10. A universal ball lock floating power chuck according to claim 1, characterized in that: A drive shaft (201) with one end extending through to one side of the rear cover plate (10) is provided at the center of one side of the plunger (2), and a cover plate (11) opposite to the drive shaft (201) is provided on the side of the main body (1) away from the rear cover plate (10).

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