Quick clamping chuck device

Abstract

The utility model discloses a quick clamping chuck device which comprises a fixing unit, an inserting unit arranged on one side of the fixing unit and a power transmission unit, the fixing unit comprises a pressing sleeve, an outer sleeve arranged on the pressing sleeve in a sleeved mode, a first spring arranged on the outer sleeve in a sleeved mode and a steel ball playing a role in limiting the inserting unit; the insertion unit comprises a shaft center and an inner side pressing piece connected with the shaft center in a matched mode, and a first groove is formed in the end of one side of the shaft center. The power transmission unit comprises a motor for providing driving force and a shifting fork connected with the air cylinder; the arc-shaped hole is formed in the pressing sleeve and used for containing the steel ball, meanwhile, the first groove matched with the periphery of the steel ball is formed in one end of the axis, and the shifting fork is driven by the air cylinder to control the outer sleeve to move so as to drive the position change of the steel ball to conduct axial positioning on the axis.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model belongs to engineering machinery technical field, more particularly, relate to a kind of quick clamping chuck device. BACKGROUND

[0002] With the rapid rise of intelligent manufacturing, robot technology is more and more widely used in various industries, and the types of robot end tools are also more and more, in order to realize the automation and unmanned of robot operation, the demand for free switching of various tools is increasingly urgent, especially in the scene involving polishing operation and other need to frequently switch rotary tools.

[0003] At present, the commonly used clamping chuck device still depends on the manual replacement of the rotary tool at the end of the manipulator, and a special clamp is often designed for each type of rotary tool, and the tool is switched by replacing the clamp. This way not only is inefficient, but also has obvious shortcomings in clamping force, which can easily cause the workpiece to loosen or drop the tool due to unstable clamping force, thereby affecting the machining precision and safety. Therefore, there is an urgent need for a chuck device that can ensure stable clamping force and quick clamping Utility model content

[0004] In view of the above defects or improvement needs of the prior art, the utility model provides a kind of quick clamping chuck device, by setting arc-shaped hole in the pressure cover, arc-shaped hole is used to place steel ball, first recess is simultaneously set with the outer periphery of steel ball at one end of shaft center, and shaft center is positioned axially using steel ball;By controlling the pull fork, the movement of the outer sleeve can be flexibly controlled, thereby driving the position change of the steel ball in the arc-shaped hole, which simplifies the clamping process of the shaft center and improves the convenience and efficiency of operation. When the shaft center needs to be locked, the pull fork drives the outer sleeve to move, so that the steel ball accurately falls into the first recess of the shaft center, achieving stable axial positioning. When the shaft center needs to be released, the pull fork drives the outer sleeve to move again, so that the steel ball moves out of the first recess, and the shaft center can be easily released.

[0005] In order to achieve the above purpose, the utility model provides a kind of quick clamping chuck device, including fixed unit, insert unit and power transmission unit on one side of fixed unit, wherein,

[0006] The fixed unit includes a pressure cover, an outer sleeve sleeved on the pressure cover, a first spring sleeved on the outer sleeve, and a steel ball limiting the insert unit;

[0007] The insert unit includes a shaft center and an inner side pressing sheet connected with the shaft center, and the shaft center is provided with a first recess at one end of the shaft center;

[0008] The power transmission unit includes a motor providing driving force and a pull fork connected with the air cylinder;

[0009] By setting the arc-shaped hole in the pressing sleeve, the arc-shaped hole is used for placing the steel ball, and a first groove matched with the outer periphery of the steel ball is arranged at one end of the shaft center, the movement of the sleeve is controlled by the cylinder driving the pull fork to drive the position change of the steel ball, so that the shaft center is axially positioned.

[0010] In an embodiment of the present application, the fixing unit further comprises a first spring outer sleeve for limiting the first spring and a connecting screw arranged at one end of the fixing unit.

[0011] In an embodiment of the present application, the insertion unit further comprises a second spring cover plate closely adjacent to the inner side pressing plate and limiting the second spring, a second spring arranged on the second spring cover plate, and an elastic pin.

[0012] In an embodiment of the present application, the power transmission unit further comprises a cylinder fixing support, a locking nut, and a polishing piece connected with the insertion unit through threads.

[0013] In an embodiment of the present application, the pressing sleeve is provided with two second grooves on the side close to the insertion unit, and the grooves are matched with the elastic pin.

[0014] In an embodiment of the present application, the pressing sleeve and the first spring outer sleeve are fixed to the motor shaft head through the connecting screw.

[0015] In an embodiment of the present application, the first groove is an annular groove matched with the outer diameter of the steel ball.

[0016] In an embodiment of the present application, one side of the second spring is connected with the second spring cover plate, and the other side is connected with the elastic pin.

[0017] Overall, compared with the prior art, the above technical scheme conceived by the present application can achieve the following beneficial effects:

[0018] (1) The quick clamping chuck device of the present application sets the arc-shaped hole in the pressing sleeve, which is used for placing the steel ball, and a first groove matched with the outer periphery of the steel ball is arranged at one end of the shaft center, and the shaft center is axially positioned by the steel ball; by controlling the pull fork, the movement of the sleeve can be flexibly controlled, and the position change of the steel ball in the arc-shaped hole is driven, which simplifies the clamping process of the shaft center and improves the convenience and efficiency of operation; when the shaft center needs to be locked, the pull fork drives the sleeve to move, so that the steel ball accurately falls into the first groove of the shaft center, realizing stable axial positioning; when the shaft center needs to be released, the pull fork drives the sleeve to move again, so that the steel ball moves out of the first groove, and the shaft center can be easily separated.

[0019] (2) The utility model discloses a quick clamping chuck device, through setting up second spring, elastic pin, press cover, under the action of second spring when clamping, make elastic pin push out, the second recess that is matched with elastic pin is provided on press cover, when elastic pin is accurately clamped into second recess, not only realize the steady location of chuck device in the circumference, still ensure power transmission.

[0020] (3) The utility model discloses a quick clamping chuck device, the one end of axle is provided with screw structure, make the device can be connected with a variety of different specifications' tool to greatly broaden its application range, the right side of axle middle is provided with still flat mouth, when fixing tool, it is convenient to lock the operation through spanner, ensure the stability and high efficiency of operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic drawing of the utility model embodiment quick clamping chuck device;

[0022] Figure 2 It is the section schematic drawing before clamping of the utility model embodiment quick clamping chuck device;

[0023] Figure 3 It is the section schematic drawing after clamping of the utility model embodiment quick clamping chuck device;

[0024] Figure 4 It is the overall schematic drawing before clamping in the practical application scene of the utility model embodiment;

[0025] Figure 5 It is the overall schematic drawing after clamping and fixing in the practical application scene of the utility model embodiment.

[0026] In all drawings, same reference signs represent same technical features, specifically:

[0027] 1-fixed unit, 11-press cover, 12-outer cover, 13-first spring, 14-steel ball, 15-connecting screw, 16-first spring outer sleeve;

[0028] 2-insertion unit, 21-axle, 211-first recess, 22-elastic pin, 23-second spring, 24-second spring cover plate, 25-internal pressure sheet;

[0029] 3-power transmission unit, 31-motor, 32-polishing piece, 33-pull fork, 34-cylinder, 35-lock nut, 36-cylinder fixed support. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict.

[0031] It should be noted that if the utility model embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if the utility model embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the utility model.

[0033] In this patent, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0034] By Figures 1-5It can be known that the utility model discloses a quick clamping chuck device, including fixed unit 1, set up in fixed unit one side's insert unit 2 and power transmission unit 3, fixed unit 1 as the basic part of whole chuck device, for installing and supporting whole device, its in the one end of device, provides stable support platform for other components, power transmission unit 3 provides driving force through motor, and power is given to insert unit and cylinder, realizes the movement of insert unit and cylinder movement, and the clamping or loosening action of each unit cooperation is realized, the insert unit 2 is detachable unit, and its position is immediately adjacent to fixed unit, under the driving of power transmission unit, insert unit can quickly, accurately move to the specified position, and then realizes clamping.

[0035] By Figures 1-3 It can be known that the fixed unit 1 includes a pressing sleeve 11, an outer sleeve 12 sleeved on the pressing sleeve 11, a first spring 13 sleeved on the outer sleeve, a steel ball 14 for limiting the insert unit 2, and a first spring outer sleeve 16 for limiting the first spring 13.

[0036] By Figures 2-3 It can be known that the fixed unit 1 further includes a connecting screw 15 arranged at one end of the fixed unit 1.

[0037] The pressing sleeve 11 is provided with two second grooves on the side close to the insert unit, the grooves are matched with elastic pins, so that the two can be stably and flexibly clamped, thereby realizing the expected connection and fixing effect.

[0038] The pressing sleeve 11 is provided with an arc-shaped hole inside, the arc-shaped hole is trumpet-shaped and used for bearing the steel ball, the arc-shaped hole is designed according to the shape of the steel ball, when the outer sleeve is moving, part of the steel ball will naturally fall into the arc-shaped hole, due to the special design of the arc-shaped hole, the steel ball will not completely separate from the pressing sleeve 11, nor will it shake or be stuck in the hole, so that the steel ball can continuously and effectively play a limiting function.

[0039] The pressing sleeve 11 is provided with a flat mouth on the right side, which cooperates with the first spring outer sleeve 16, thereby realizing power transmission.

[0040] The outer sleeve 12 is installed on the pressing sleeve 11, and a circle of first springs 13 is sleeved on the outer periphery of the outer sleeve 12, when it is needed to move the outer sleeve for clamping operation, external force in the operation process will act on the outer sleeve, thereby extruding the first springs 13 sleeved on the outer periphery of the outer sleeve. With the movement of the outer sleeve, the first springs 13 will be gradually compressed; once the clamping operation is completed, the external force is removed, and the first springs 13 will be quickly reset under the action of the internal elastic force, not only ensuring the stability and reliability of the clamping operation, but also making the whole device still maintain good performance and service life after being used for many times.

[0041] Optionally, the steel ball 14 is made of high-strength alloy.

[0042] The first spring outer sleeve 16 plays a limiting role on the first spring 13, preventing it from deviating or falling off during operation. Meanwhile, the first spring outer sleeve 16 is provided with an inner flange, which is matched with the flange on the right side of the pressing sleeve 11. The combination of the two ensures that the power transmitted by the motor can be smoothly and accurately transmitted to the subsequent components.

[0043] The connecting screw 15 is arranged on the side of the fixed unit 1 close to the motor. The pressing sleeve 11 and the first spring outer sleeve 16 are fixed to the motor shaft head through the connecting screw 15.

[0044] From Figures 1-4 It can be seen that the insertion unit 2 includes a shaft 21, an inner pressing plate 25 connected with the shaft 21, a second spring cover plate 24 closely adjacent to the inner pressing plate 25 and limiting the second spring, a second spring 23 arranged on the second spring cover plate 24, and an elastic pin 22.

[0045] The shaft 21 is provided with a first recess 211 on one side end, which is an annular recess for matching the steel ball 14. The first recess 211 is matched with the outer diameter of the steel ball. The other side end of the shaft 21 is provided with a threaded structure, so that the device can be connected with various tools of different specifications, thereby greatly widening its application range. The right side of the shaft 21 is provided with a flange.

[0046] One end of the inner pressing plate 25 is provided with a flange recess, which is matched with the corresponding flange of the shaft 21. When the two are matched, they can be firmly connected together to achieve power transmission together.

[0047] The shaft 21 is provided with two holes for assembling the second spring 23. One side of the second spring 23 is connected with the second spring cover plate 24, and the other side is connected with the elastic pin 22. The elastic pin 22 serves as the terminal component of the insertion unit. When clamping is achieved, the elastic pin 2 is connected with the second recess on the pressing sleeve 11 of the fixed unit 1, achieving circumferential limiting and tightly connecting the insertion unit and the fixed unit as a whole.

[0048] The second spring cover plate 24 plays a limiting role on the second spring 23. It is closely attached to one side of the inner pressing plate 25, ensuring that the second spring can maintain a stable form and position when compressed or stretched, thereby ensuring the stability and response speed of the insertion unit when under stress.

[0049] In an embodiment of the utility model, through setting up arc hole in pressure cover 11, arc hole is used for placing steel ball 14, and first recess 211 that is adapted to the outer circle of steel ball 14 is set up at one end of axle 21, and steel ball 14 is used to carry out axial positioning to axle 21, through control of pull fork, the movement of outer sleeve 12 can be flexibly controlled, and then the position change of steel ball 14 in arc hole is driven, the clamping process of axle 21 is simplified, and the convenience and efficiency of operation are improved, when needing to lock axle 21, pull fork drives outer sleeve 12 to move, makes steel ball 14 accurately fall into first recess 211 of axle 21, realizes stable axial positioning, and when needing to release axle 21, pull fork drives outer sleeve 12 to move again, makes steel ball 14 move out from first recess, and axle 21 can be easily separated.

[0050] In an embodiment of the utility model, through setting up second spring 23, elastic pin 22 and pressure cover 11, elastic pin 22 is pushed out under the action of second spring 23 when clamping, and second recess that is adapted to elastic pin 22 is set up on pressure cover 11, when elastic pin 22 is accurately clamped into second recess, not only the stable limiting of chuck device in the circumferential direction is realized, but also power transmission is ensured.

[0051] By Figures 4-5 It can be known that the power transmission unit 3 comprises a motor 31 providing driving force, a cylinder fixing support 36, a cylinder 34 fixed to the motor 31 through the cylinder fixing support 36, a pull fork 33 connected with the cylinder 34, a locking nut 35, and a polishing piece 32 connected with the inserting unit 2 through threads.

[0052] The motor 31 is a source of driving force, which is connected with the cylinder fixing support 36.

[0053] The cylinder fixing support 36 is located on one side of the motor, and is used for fixing and supporting the cylinder.

[0054] Optionally, the connection mode between the cylinder fixing support 36 and the motor is bolt connection.

[0055] Optionally, the cylinder fixing support 36 is plate-shaped, and the support adopts a plate-shaped structure, has sufficient rigidity and strength to bear various forces and vibrations generated by the cylinder during working, and a plurality of mounting holes are arranged on the surface of the support.

[0056] The puller 33 is fixed with the piston rod of the cylinder by bolt connection at the end of the piston rod of the cylinder.

[0057] In another embodiment of the utility model, a use method of the quick clamping chuck device is provided.

[0058] S100: tool insertion: the mechanical hand is used to position the tool to be installed to the insertion unit 2 of the quick clamping chuck device, the outer sleeve 12 is moved right by the puller 33 driven by the cylinder 34, the steel ball 14 is moved out of the arc-shaped hole of the pressing sleeve, space is left for the insertion unit connection, the tool is connected with the insertion unit 2 through the thread on one side of the shaft 21, and the tool and the shaft are correctly matched.

[0059] S200: tool fixing: the puller 33 is loosened, the outer sleeve 12 is moved left under the action of the first spring 13, the steel ball 14 is driven into the arc-shaped hole of the pressing sleeve, after the steel ball 14 enters the arc-shaped hole of the pressing sleeve, the right side end first recess 211 of the shaft is limited, the tool cannot move axially, after the motor is started and rotated, the elastic pin 22 enters the second recess of the pressing sleeve under the action of the second spring 23, circumferential limiting is realized, the tool can rotate with the motor, the shaft 21 drives the tool to rotate, the fixing and power transmission of the tool are completed.

[0060] S300: tool removal: the outer sleeve 12 is moved right again by the puller 33 driven by the cylinder, the steel ball 14 is moved out of the arc-shaped hole of the pressing sleeve 11, the limiting of the shaft 21 is released, the insertion unit is easily taken out, and the work is completed.

[0061] Those skilled in the art can easily understand that the above only describes the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection range of the utility model.

Claims

1. A quick-attach collet device, comprising: Including fixed unit (1), the insertion unit (2) provided in one side of fixed unit (1) and power transmission unit (3), wherein, The fixed unit (1) includes a pressing sleeve (11), an outer sleeve (12) sleeved on the pressing sleeve (11), a first spring (13) sleeved on the outer sleeve, and a steel ball (14) for limiting the insertion unit (2); The insertion unit (2) includes an axis (21) and an inner pressing plate (25) connected with the axis (21), and a first groove (211) is arranged at one end of the axis (21); The power transmission unit (3) includes a motor (31) for providing driving force and a pull fork (33) connected with a pneumatic cylinder (34). By arranging an arc-shaped hole in the pressing sleeve (11) for placing the steel ball (14), and arranging a first groove (211) at one end of the axis (21) matched with the outer periphery of the steel ball (14), the position of the steel ball (14) is changed by the pneumatic cylinder driving the pull fork (33) to control the movement of the outer sleeve, so that the axis (21) is axially positioned.

2. The quick-attach collet apparatus of claim 1, wherein, The fixed unit (1) further includes a first spring outer sleeve (16) for limiting the first spring (13) and a connecting screw (15) arranged at one end of the fixed unit (1).

3. The quick-attach collet apparatus of claim 1, wherein, The insertion unit (2) further includes a second spring cover plate (24) adjacent to the inner pressing plate (25) and limiting the second spring, a second spring (23) arranged on the second spring cover plate (24), and an elastic pin (22).

4. The quick-attach collet apparatus of claim 1, wherein, The power transmission unit (3) further includes a pneumatic cylinder fixing support (36), a locking nut (35), and a polishing piece (32) connected with the insertion unit (2) by threads.

5. The quick- change chuck apparatus of any one of claims 1-4, wherein, The pressing sleeve (11) is provided with two second grooves adjacent to the insertion unit, which are matched with the elastic pin (22).

6. The quick-attach collet apparatus of claim 2, wherein, The pressing sleeve (11) and the first spring outer sleeve (16) are fixed to the motor shaft head by the connecting screw (15).

7. The quick- change chuck apparatus of any one of claims 1-4, wherein, The first groove (211) is an annular groove matched with the outer diameter of the steel ball (14).

8. The quick-attach collet apparatus of claim 3, wherein, The second spring (23) is connected with the second spring cover plate (24) at one side and connected with the elastic pin (22) at the other side.

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