TWI616254B

TWI616254B - Powered eccentric chuck

Info

Publication number: TWI616254B
Application number: TW105142243A
Authority: TW
Inventors: Ya-Jue Wu
Original assignee: Wu ya jue
Priority date: 2016-12-20
Filing date: 2016-12-20
Publication date: 2018-03-01
Also published as: TW201822920A

Abstract

一種動力式偏心夾頭，具有可沿著旋轉主軸的軸向移動之方式設一用以夾持工件的夾持裝置和至少一配重件，夾頭另設一傳動機構帶動夾持裝置偏心移動時同步地傳動配重件反向移動，本創作所提供的夾頭除了可以動力驅動方式夾住工件偏心轉動，而且又能維持重心，避免夾頭高速轉動時產生偏心震動。A power type eccentric chuck has a clamping device for clamping a workpiece and at least one weight member in a manner of axial movement along a rotating main shaft, and the chuck has a transmission mechanism for driving the clamping device to move eccentrically Simultaneously transmitting the counterweight moving in the opposite direction, the chuck provided by the present invention can not only eccentrically rotate the workpiece by the power driving mode, but also maintain the center of gravity and avoid eccentric vibration when the chuck rotates at a high speed.

Description

動力式偏心夾頭Powered eccentric chuck

本發明係與機械加工有關，特別是關於一種工具機的動力式偏心夾頭。 The invention relates to machining, and in particular to a power type eccentric chuck for a machine tool.

一般工件若需要進行偏心加工，主要係將工件以偏離工具機之旋轉主軸軸心的方式夾置於工具機之夾頭進行加工，此種夾置方式需要手動逐步調整夾頭每一個夾爪的位置，再將夾爪固定住欲加工的工件，整個加工緩慢且沒有效率。 In general, if the workpiece needs to be eccentrically machined, the workpiece is mainly placed on the chuck of the machine tool by being offset from the axis of the rotating spindle of the machine tool. This clamping method requires manual stepwise adjustment of each jaw of the chuck. Position, and then clamp the jaws to the workpiece to be machined, the whole process is slow and inefficient.

而且，在上述偏心加工的時候，為了避免旋轉主軸於轉動時產生震動而導致加工精度下降或工具機具損毀，通常都使旋轉主軸以低轉速轉動，也造成加工效能減低。再者，旋轉主軸在承受偏向負荷的情況下，轉動也容易減短使用壽命。 Moreover, in the above eccentric machining, in order to avoid the vibration of the rotating main shaft during the rotation, the machining accuracy is lowered or the tool tool is damaged, and the rotating main shaft is usually rotated at a low rotation speed, which also causes a reduction in the processing performance. Furthermore, when the rotating main shaft is subjected to a bias load, the rotation is also likely to shorten the service life.

因此，本發明之主要目的在於提供一種動力式偏心夾頭，可自動且有效率的方式夾持工件與改變偏心位移量，又能在偏心夾持工件時保持旋轉重心於中央部位。 Accordingly, it is a primary object of the present invention to provide a powered eccentric chuck that automatically and efficiently grips a workpiece and changes the amount of eccentric displacement, while maintaining the center of gravity of the center of gravity when the workpiece is eccentrically gripped.

為了達成前述發明目的，本發明所提供的動力式偏心夾頭具有可沿著旋轉主軸的軸向移動之方式設一用以夾持工件的夾持裝置和至少一配重件，夾頭另設一傳動機構用以帶動夾持裝置偏心移動時同步地傳動配重件反向移動，本創作所提供的偏心夾頭除了可動力驅動式夾住工件偏心轉動，而且又能維持重心，避免夾頭高速轉動時產生偏心震動。 In order to achieve the foregoing object, the power eccentric chuck provided by the present invention has a clamping device for clamping a workpiece and at least one weight member along the axial movement of the rotating main shaft, and the chuck is separately provided. A transmission mechanism is used to drive the eccentric movement of the clamping device to synchronously drive the counterweight to move in the opposite direction. The eccentric chuck provided by the present invention not only can eccentrically rotate the workpiece by the power driving type, but also maintains the center of gravity and avoids the chuck. Eccentric vibration occurs when rotating at high speed.

10‧‧‧本體 10‧‧‧ Ontology

12‧‧‧前滑槽 12‧‧‧ front chute

14‧‧‧後滑槽 14‧‧‧ rear chute

16‧‧‧中心孔 16‧‧‧ center hole

18‧‧‧腔室 18‧‧‧ chamber

20‧‧‧夾持裝置 20‧‧‧Clamping device

22‧‧‧滑動座 22‧‧‧Sliding seat

23‧‧‧翼部 23‧‧‧ wing

24‧‧‧定位件 24‧‧‧ Positioning parts

25‧‧‧軸承 25‧‧‧ bearing

26‧‧‧連動件 26‧‧‧ linkages

27‧‧‧導槽 27‧‧‧ Guide slot

28‧‧‧固定件 28‧‧‧Fixed parts

29‧‧‧迴轉缸拉桿 29‧‧‧Rotary cylinder rod

30‧‧‧配重件 30‧‧‧With weights

40‧‧‧傳動機構 40‧‧‧Transmission mechanism

42‧‧‧齒輪軸 42‧‧‧ Gear shaft

50‧‧‧油壓缸 50‧‧‧Hydraulic cylinder

52‧‧‧活塞 52‧‧‧Piston

70‧‧‧擋止件 70‧‧‧stops

72‧‧‧墊塊 72‧‧‧ pads

80‧‧‧導油座 80‧‧‧ oil guide

82‧‧‧外部油管 82‧‧‧External tubing

以下，茲舉一較佳之實施例並配合下列圖示詳細說明本發明；而在下列圖示中：第1圖係本發明一較佳實施例之立體組合圖；第2圖係本發明一較佳實施例之立體分解圖；第3圖係本發明一較佳實施例之前視圖；第4圖係第3圖中4-4剖線之剖視圖；第5圖係第3圖中5-5剖線之剖視圖；第6至9圖係本發明一較佳實施例之作動示意圖；第10圖的剖視圖，主要顯示偏心移位狀態；第11、12圖係本發明的側視圖，主要顯示另一實施使用狀態。 BRIEF DESCRIPTION OF THE DRAWINGS In the following, the present invention will be described in detail with reference to the accompanying drawings in which: FIG. 1 is a perspective view of a preferred embodiment of the present invention; 3 is an exploded perspective view of a preferred embodiment of the present invention; FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 3; and FIG. 5 is a cross-sectional view taken at 5-5 of FIG. FIG. 6 to FIG. 9 are schematic views showing the operation of a preferred embodiment of the present invention; FIG. 10 is a cross-sectional view showing mainly an eccentric displacement state; and FIGS. 11 and 12 are side views of the present invention, mainly showing another Implement the use status.

請參閱第1圖至第5圖所示，本發明一較佳實施例所提供的動力式偏心夾頭包含一本體10、一夾持裝置20、一配重件30，以及一傳動機構40，本體10概呈圓柱形，可用以裝置於一工具機之旋轉主軸。本體10具有一前滑槽12、一後滑槽14，以及一連通前、後滑槽12、14的中心孔16、本體10的周壁設有二腔室18，二腔室18對稱位於本體10的二側。傳動機構40包含二齒輪軸42，各齒輪軸42可轉動地設於各腔室18內部，齒輪軸42的部分齒形分別露出於前、後滑槽12、14。本體10的底側另設有一油壓缸50，油壓缸50內具有一活塞52可受油壓控制而帶動夾持裝置20。 Referring to Figures 1 to 5, a power type eccentric chuck according to a preferred embodiment of the present invention comprises a body 10, a clamping device 20, and a weight member 30. And a transmission mechanism 40, the body 10 is substantially cylindrical and can be used to mount a rotating spindle of a machine tool. The main body 10 has a front chute 12, a rear chute 14, and a central hole 16 connecting the front and rear chutes 12, 14. The peripheral wall of the body 10 is provided with a two-chamber 18, and the two chambers 18 are symmetrically located on the body 10. The two sides. The transmission mechanism 40 includes two gear shafts 42. The gear shafts 42 are rotatably disposed inside the chambers 18. The tooth profiles of the gear shafts 42 are respectively exposed to the front and rear chutes 12, 14. The bottom side of the body 10 is further provided with a hydraulic cylinder 50. The hydraulic cylinder 50 has a piston 52 that can be controlled by the oil pressure to drive the clamping device 20.

夾持裝置20包含一中空滑動座22，滑動座22內部設一可用以夾置工件的定位件24，於本較佳實施例的定位件24為套筒，定位件24後端設置一中空連動件26，連動件26的中心穿設一固定件28，定位件24藉由一迴轉缸拉桿29而可拉動連動件26與定位件24相對於滑動座22移動，達成夾置或鬆釋定位件24的作用。 The clamping device 20 includes a hollow sliding seat 22, and the sliding seat 22 is provided with a positioning member 24 for clamping the workpiece. The positioning member 24 of the preferred embodiment is a sleeve, and a hollow joint is disposed at the rear end of the positioning member 24. The center of the linking member 26 is provided with a fixing member 28. The positioning member 24 can move the linking member 26 and the positioning member 24 relative to the sliding seat 22 by a rotary cylinder pull rod 29, thereby achieving a clamping or loosening positioning member. The role of 24.

滑動座22係設置於本體10之前滑槽12，連動件26經由本體10的中心孔16朝向後滑槽14方向設置，滑動座22二側各具有一翼部23，二翼部23分別靠置於本體10的前滑槽12壁面，而且嚙合二齒輪軸42，整個夾持裝置20可受齒輪軸42帶動而於前滑槽12內部滑移。配重件30位於本體10的後滑槽14，配重件30的前端面嚙合於二齒輪軸42，使得配重件30同樣受齒輪軸42帶動而可沿著後滑槽14滑移，再配合齒輪軸42兩側分別嚙合於配重件30與滑動座22，齒輪軸42於腔室18旋轉的時候會嚙合帶動夾持裝置20的移動方向恰好相反於配重件30的移動方向。 The sliding seat 22 is disposed on the front chute 12 of the main body 10. The linking member 26 is disposed in the direction of the rear chute 14 via the central hole 16 of the main body 10. The sliding seat 22 has a wing portion 23 on each of the two sides, and the two wing portions 23 are respectively placed The wall of the front chute 12 of the body 10 and the two gear shafts 42 are engaged, and the entire clamping device 20 can be driven by the gear shaft 42 to slide inside the front chute 12. The weight member 30 is located at the rear chute 14 of the body 10. The front end surface of the weight member 30 is engaged with the two gear shafts 42, so that the weight member 30 is also driven by the gear shaft 42 to slide along the rear chute 14, and then The two sides of the gear shaft 42 are respectively engaged with the weight member 30 and the sliding seat 22. When the gear shaft 42 rotates when the chamber 18 rotates, the moving direction of the clamping device 20 is opposite to the moving direction of the weight member 30.

連動件26的後端中心具有一長形導槽27，導槽27的延伸方向與定位件24的軸向相互垂直，固定件28穿設於導槽27，且藉由二間隔設置於固定件28的軸承25嵌夾住連動件26，使得夾持裝置20可相對於固定件28沿垂直於定位件24的軸向移動。 The center of the rear end of the linking member 26 has an elongated guiding groove 27, and the extending direction of the guiding groove 27 is perpendicular to the axial direction of the positioning member 24, and the fixing member 28 is disposed through the guiding groove 27, and The bearing 25 spaced apart from the fixing member 28 engages the linking member 26 such that the clamping device 20 is movable relative to the fixing member 28 in the axial direction perpendicular to the positioning member 24.

如第2圖、第6至8圖所示，本體10於滑動座22的側向設有二可移動的擋止件70與一墊塊72，擋止件70可受油壓控制於一第一位置(第6圖)與一第二位置(第8圖)之間移動，當擋止件70位於第一位置可抵接於滑動座22，形成滑動座22位於本體10的正中心位置，而當擋止件70移動至第二位置即為移離於滑動座22，使滑動座22可朝偏心位置移動至接觸墊塊72為止，達到控制滑動座22之偏心距離的目的。 As shown in FIG. 2 and FIG. 6 to FIG. 8 , the body 10 is provided with two movable stoppers 70 and a spacer 72 on the lateral side of the sliding seat 22 , and the stopper 70 can be controlled by oil pressure. Moving between a position (Fig. 6) and a second position (Fig. 8), when the blocking member 70 is at the first position, the sliding seat 22 is abutted, and the sliding seat 22 is formed at the center of the body 10. When the stopper 70 is moved to the second position, it is moved away from the sliding seat 22, so that the sliding seat 22 can be moved to the contact pad 72 toward the eccentric position, and the eccentric distance of the sliding seat 22 is controlled.

本體10內部另設有一導油座80，導油座80具有通路連通於外部油管82、油壓缸50與擋止件70，導油座80可設於配重件30的中央位置，更為縮減整體的尺寸。 An oil guiding seat 80 is further disposed in the body 10, and the oil guiding seat 80 has a passage communicating with the external oil pipe 82, the hydraulic cylinder 50 and the stopping member 70. The oil guiding seat 80 can be disposed at the center of the weight member 30, and Reduce the overall size.

請參閱第4圖及第10圖，當欲加工之工件插設於定位件24前端，透過拉桿29與固定件28可拉動定位件24收束於滑動座22而定位住工件。接著利用油壓迴路控制液壓油經過導油座80於油壓缸50之流向，即可驅使活塞52推動夾持裝置20朝偏心方向移動(第9圖)置抵接於墊塊72，使工件即可快速且自動化地移動至預定偏心加工位置，同時配重件30會因二齒輪軸42的轉動而隨滑動座22進行反向移動，整體偏心夾頭及工件之整體重心保持在轉動重心，夾頭高速旋轉時也不會發生偏心震動現象。再者，由於工件之重量可能會隨著加工需求不同而有所改變，使配重件30無法確實達成平衡作用，因而可以鎖設配重塊於配重件30而改變其重量，達成調整配重的平衡效果。 Referring to FIG. 4 and FIG. 10, when the workpiece to be processed is inserted into the front end of the positioning member 24, the positioning member 24 can be pulled by the pulling rod 29 and the fixing member 28 to be bundled on the sliding seat 22 to position the workpiece. Then, the hydraulic circuit is used to control the flow of the hydraulic oil through the oil guiding block 80 in the hydraulic cylinder 50, thereby driving the piston 52 to push the clamping device 20 to move in the eccentric direction (FIG. 9) to abut the spacer 72 to make the workpiece. It can be quickly and automatically moved to a predetermined eccentric machining position, and the weight member 30 will be reversely moved with the sliding seat 22 due to the rotation of the two gear shafts 42, and the overall center of gravity of the overall eccentric chuck and the workpiece is maintained at the center of gravity. Eccentric vibration does not occur when the chuck is rotated at a high speed. Furthermore, since the weight of the workpiece may vary with the processing requirements, the weight member 30 cannot be surely balanced, so that the weight can be locked to the weight member 30 to change its weight, and the adjustment can be achieved. Heavy balance effect.

再如第11圖及第12圖所示，本發明的滑動座可改設置一沿直線軸向移動的活塞60與二可隨之旋轉的夾爪62，利用連動件26設於活塞60即可帶動夾爪62固定或是鬆釋工件。 Further, as shown in FIG. 11 and FIG. 12, the sliding seat of the present invention can be provided with a piston 60 that moves in a linear axial direction and two jaws 62 that can be rotated therewith, and the connecting member 26 can be disposed on the piston 60. The clamping jaw 62 is driven to fix or release the workpiece.

藉由上述組成構件，本發明可自動且有效率地夾持工件，同時也可使工件呈偏心狀態進行加工，整體偏心夾頭及工件之整體重心保持在穩定的位置，提昇加工精度與品質。本發明可利用不同厚度的墊塊方便與快速的控制偏心位移量，提升加工效率，同時整體體積與尺寸又都較為精簡。 By the above-mentioned constituent members, the present invention can automatically and efficiently hold the workpiece, and at the same time, the workpiece can be processed in an eccentric state, and the overall eccentric chuck and the overall center of gravity of the workpiece are maintained at a stable position, thereby improving processing precision and quality. The invention can utilize the pads of different thicknesses to conveniently and quickly control the amount of eccentric displacement, improve the processing efficiency, and at the same time, the overall volume and size are relatively simple.

Claims

一種動力式偏心夾頭，係裝置於一工具機之旋轉主軸，該動力式偏心夾頭包含有：一本體；一夾持裝置，係可沿一移動路徑往復移動地裝設於該本體，該夾持裝置可沿一垂直於該移動路徑之方向夾持住工件；一配重件，係設於該本體，可於該本體沿一直線路徑往復移動，且該直線路徑係平行於該夾持裝置之移動路徑；一傳動機構，係設於該本體，用以使該夾持裝置移動時傳動該配重件朝反方向移動；其中，該本體於該夾持裝置的側向設有至少一可移動的擋止件與一墊塊，該至少一擋止件可受控制於一第一位置與一第二位置之間移動，當該至少一擋止件位於該第一位置可抵接於該夾持裝置，形成該夾持裝置位於該本體的正中心位置，而當該擋止件移動至該第二位置係移離於該夾持裝置，使該夾持裝置可朝偏心位置移動至接觸該墊塊。 A power type eccentric chuck is mounted on a rotating main shaft of a machine tool. The power type eccentric chuck comprises: a body; a clamping device is mounted on the body reciprocally along a moving path, The clamping device can clamp the workpiece in a direction perpendicular to the moving path; a weight member is disposed on the body to reciprocate along the straight path of the body, and the linear path is parallel to the clamping device a moving mechanism; a transmission mechanism is disposed on the body for moving the weight member in a reverse direction when the clamping device is moved; wherein the body is provided with at least one side of the clamping device a moving stop member and a pad, the at least one stop member being controllable to move between a first position and a second position, wherein the at least one stop member is located at the first position to abut a clamping device, the clamping device is formed at a position of a center of the body, and when the blocking member is moved to the second position, the clamping device is moved away from the eccentric position to contact The spacer.

如申請專利範圍第1項所述之動力式偏心夾頭，其中該本體具有一前滑槽、一後滑槽，以及一連通該前滑槽與該後滑槽的中心孔，該夾持裝置具有一滑動座設置於該前滑槽，該夾持裝置具有一連動件經由該中心孔朝向該後滑槽方向設置，該連動件可移動地結合一固定件，使該夾持裝置可相對該本體朝偏心方向移動。 The power type eccentric chuck according to claim 1, wherein the body has a front chute, a rear chute, and a center hole connecting the front chute and the rear chute, the clamping device Having a sliding seat disposed on the front chute, the clamping device has a linking member disposed through the central hole toward the rear chute, the linking member movably coupling a fixing member, so that the clamping device can be opposite to the clamping device The body moves in an eccentric direction.

依申請專利範圍第2項所述之動力式偏心夾頭，其中該連動件具有一導槽，該導槽的延伸方向與該滑動座的軸向相互垂直，該固定件穿設於該導槽，且藉由二間隔設置於該固定件的軸承嵌夾住該連動件，使得該夾持裝置可相對於該固定件沿垂直於該定位件的軸向移動。 The power type eccentric chuck according to claim 2, wherein the linking member has a guiding groove, and the extending direction of the guiding groove is perpendicular to the axial direction of the sliding seat. The fixing member is disposed in the guiding groove, and the connecting member is clamped by two bearings spaced apart from the fixing member, so that the clamping device can move relative to the fixing member in an axial direction perpendicular to the positioning member. .

如申請專利範圍第2項所述之動力式偏心夾頭，其中該本體設有二腔室，該二腔室對稱位於該本體二側，該傳動機構包含二齒輪軸，各該齒輪軸可轉動地設於各該腔室內部，而且嚙合於該滑動座與位於該後滑槽的該配重件，該夾持裝置於該本體移動時，可分別傳動該配重件同步且反向移動。 The power type eccentric chuck according to claim 2, wherein the body is provided with two chambers symmetrically located on two sides of the body, the transmission mechanism comprises two gear shafts, and the gear shafts are rotatable The grounding portion is disposed in each of the chambers, and is engaged with the sliding seat and the weight member located in the rear sliding slot. When the clamping device moves, the clamping device can respectively drive the weight member to synchronously and reversely move.

如申請專利範圍第1項所述之動力式偏心夾頭，其中該本體另設有一油壓缸，該油壓缸具有一活塞可受油壓控制而帶動該夾持裝置。 The power type eccentric chuck according to claim 1, wherein the body is further provided with a hydraulic cylinder having a piston that can be controlled by oil pressure to drive the clamping device.

依申請專利範圍第1項所述之動力式偏心夾頭，其中該配重件可鎖設預定數量之配重塊於該配重件，進而依需求調整整個配重重量。 The power type eccentric chuck according to claim 1, wherein the weight member can lock a predetermined number of weights on the weight member, thereby adjusting the weight of the entire weight according to requirements.

依申請專利範圍第1項所述之動力式偏心夾頭，其中該夾持裝置設一夾置工件的定位件，該定位件為一沿直線軸向移動的活塞與二可隨之旋轉的夾爪，該活塞即可帶動該二夾爪固定或是鬆釋工件。The power type eccentric chuck according to claim 1, wherein the clamping device is provided with a positioning member for clamping the workpiece, the positioning member is a piston moving in a linear axial direction and a clamp capable of rotating therewith. The claw can drive the two jaws to fix or release the workpiece.