KR101574962B1 - Chuck device having two collets - Google Patents

Abstract

Chucking device 300 includes front and rear collets 102, 112, a drive ring 72, and a drive sleeve 71. The drive ring 72 and the drive sleeve 71 may be hydraulically driven to move away from each other or away from each other. When the drive ring 72 and the drive sleeve 71 are moved to hydraulic pressure away from each other, each of the front and rear collars 102, 112 is moved to the discharge position. When the drive ring 72 and the drive sleeve 71 are hydraulically moved toward each other, each of the front and rear collars 102 and 112 is moved to a clamping position.

Description

≪ Desc / Clms Page number 1 > CHUCK DEVICE HAVING TWO COLLETS &

The present invention relates to a chucking device of a processing tool, and more particularly to a chucking device having two collets which can be driven to operate synchronously.

Referring to Figure 1, a conventional hydraulic chuck device disclosed in Taiwan Patent Application Publication No. 201130596 includes a processing frame 603, which includes a fixed seat 604, a hydraulic cylinder 605, a first oil path control unit 609, a second oil path control unit 6095, a drive seat 610, a transmission unit 608, a bearing unit 607, a connecting sheet 608, A front cap 613, a rear cap 614, a front collet 615, a rear collet 616, a front cover 617 and a rear cover 618, Is provided. When the hydraulic oil is supplied to the oil hole 6045 in the fixing seat 604, it flows into the hole 6089 and pushes the driving ring 6102 of the driving seat 610, 613 to move forward. Thus, the front collet 615 is operated to grip the workpiece (not shown) to be machined. The front and rear collars 615 and 616 can be opened and closed synchronously so that the pull rod 612 is connected between the front and rear collets 615 and 616 so that the action of the front collet 615 Adversely affecting the smooth operation of the rear collet 616. As a result, the rear collet 616 can not rigidly grip other workpieces (not shown) to be machined. In addition, due to the presence of the pull rod 612, the opening angles of the front and rear collets 615 and 616 are equal at the same time. One of the two parts of the workpiece is firmly gripped inside one of the front and rear collets 615 and 616 in the situation where the front and rear collets 615 and 616 grip the two parts, The other one of the two parts of the work piece can not be firmly gripped inside the other of the front and rear collets 615 and 616. [ As a result, when the chuck device operates at a high speed, shaking of the workpiece is caused, which adversely affects the machining accuracy. In addition, since the front and rear collets 615 and 616 can not be used to simultaneously process two workpieces having different diameters, the production capacity can be reduced if the workpieces to be machined have different diameters.

It is an object of the present invention to provide a chucking device with two collets, each capable of rigidly grasping two workpieces to be machined simultaneously.

Another object of the present invention is to provide a chuck device capable of firmly gripping two workpieces having different diameters at the same time.

According to an aspect of the present invention, a chucking device includes a front and a rear collet, a drive ring, and a drive sleeve. The drive ring and the drive sleeve may be hydraulically driven to move away from each other or away from each other. When the drive ring and the drive sleeve are moved to hydraulic pressure away from each other, each of the front and rear collets is moved to the discharge position. When the drive ring and the drive sleeve are hydraulically moved toward each other, each of the front and rear collets is moved to a clamping position.

According to another aspect of the present invention, a processing apparatus includes a machining frame, a drive device disposed on the machining frame, a chucking device, and a machining device, wherein the machining device includes two turrets arranged on the machining frame and aligned with the front and rear collets, and a turret unit. The mounting member of the chuck device is disposed above the processing frame.

Since the front and rear collars are not interconnected by a single rigid body, such as a pull rod used in the prior art described above, their opening angles can be different to synchronously hold two workpieces of different diameters rigidly, The production capacity can be effectively promoted.

These and other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments of the present invention when taken in conjunction with the accompanying drawings.
1 is a cross-sectional view of a conventional chucking device.
2 is a plan view of a first preferred embodiment of the processing equipment according to the invention.
3 is a front view of the first preferred embodiment.
4 is a front view of the chucking apparatus of the first preferred embodiment.
5 is a cross-sectional view taken along the line VV in Fig. 4, showing the front and rear collets disposed in the discharge position;
Fig. 6 is a partially enlarged view of Fig. 5. Fig.
Fig. 7 is a view similar to Fig. 5, showing each of the front and rear collets disposed in the clamping position.
8 is a partial enlarged view of Fig.
9 is a plan view of a second preferred embodiment of the processing equipment according to the invention.
10 is a front view of a second preferred embodiment.

Before describing the present invention in more detail, it should be noted that the same elements are denoted by the same reference numerals throughout the present disclosure.

2 and 3, a first preferred embodiment of the processing equipment according to the present invention includes a processing frame 100, a drive device 200, a chucking device 300 and a machining device 400.

The driving device 200 includes a driving motor 201 disposed on the intermediate portion of the processing frame 100 and disposed on the processing frame 100 and a driving belt 201 connected between the driving motor 201 and the chuck device 300 202).

4, 5 and 6, the chuck apparatus 300 is disposed on the processing frame 100 and includes a mounting member 2, a fixing seat 3, a bearing unit 4, a connecting member 5, A front cover 12, a rear cover (not shown), a front cover 12, a front cover 12, a front cover 12, 13) and two cutter positioning units (14).

The mounting member 2 is disposed on the processing frame 100 and has a receiving hole 21 centered on the axis L. [

The stationary seat 3 is disposed in the receiving hole 21 and has an annular portion 31 centered on the axis L. [

The bearing unit 4 includes a plurality of bearings 41 that are disposed in the shaft hole 311 in the fixed seat 3.

The connecting member 5 has a rear sleeve 51 which is rotatably extended through the bearing 41 of the bearing unit 4 along the axis L and a front sleeve 51 which extends forward from the front end of the rear sleeve 51 Includes a ring component (52) having a tapered inner surface (521).

The transmission member 6 is driven by the belt 202 of the driving device 200 so as to be sleeved on the ring part 52 and to cover the ring part 52 and to rotate about the axis L. [ In this embodiment, the transmission member 6 is a belt pulley unit.

The pressure cylinder unit 7 includes a drive sleeve 71 disposed in the connecting member 5 and adjacent the tapered inner surface 521 and a drive sleeve 71 disposed in the ring component 52 and movable relative to the drive sleeve 71. [ And a ring 72. The drive sleeve 71 and the drive ring 72 can move along the axis L toward each other or away from each other. The drive ring 72 cooperates with the ring component 52 and the drive sleeve 71 to define the first oil chamber 73. The drive sleeve 71 cooperates with the tapered inner surface 521 to define a second oil chamber 74. The drive ring 72 cooperates with the transmission member 6 to define the third oil chamber 75.

The inner stationary unit 8 includes an inner cap 81 covering the front end of the annular portion 31 and an outer cap 82 covering the front end of the annular portion 31 and the inner cap 81.

5 and 7, the oil path unit 9 includes a first oil hole 91 formed in the outer cap 82, a second oil hole 92 formed in the outer cap 82, A first oil path 93 formed in the inner cap 81 and in fluid communication with the first oil path 93 and the first oil hole 91; A second oil path 94 is formed in the inner cap 81 and a third oil path 95 formed in the ring part 52 and in fluid communication with the second and third oil chambers 74 and 75, And a fourth oil path 96 in fluid communication with the oil hole 92 and the third oil path 95.

The front chuck unit 10 includes a front cap 101 disposed on the transmission member 6 and having a tapered front chuck hole 104, a front collet 102 and a front collet 102 disposed in the front chuck hole 104 And a front connecting pipe 103 connected between the driving ring 72 and the driving ring 72. Since the front cap 101 and the front collet 102 are well known in the art, a more detailed description thereof will be omitted herein for the sake of brevity.

5 and 6, the rear chuck unit 11 includes a rear cap 111 disposed on the rear sleeve 51 and having a dotted rear chuck hole 114, a rear cap 111 disposed on the rear chuck hole 114, And a connecting mechanism 113 disposed in the collet 112 and the rear sleeve 51 and connected between the driving sleeve 71 and the rear collet 112. Since the rear cap 111 and rear collet 112 are well known in the art, a more detailed description thereof will be omitted herein for the sake of brevity. The connecting mechanism 113 includes a stationary ring 115 fixed to the rear sleeve 51, a plurality of equidistant movable sleeves 116 movably extending through the stationary ring 115, a movable sleeve 116 And a rear connecting tube 118 having a front end that is threaded into the bolt 117 and a rear end that is connected to the rear collet 112. The rear connecting tube 118 includes a plurality of bolts 117,

The front cover 12 is disposed on the front end surface of the mounting member 2.

The rear cover 13 is disposed on the rear end surface of the mounting member 2.

Each of the cutter positioning units 14 is connected to each of the front and rear chuck units 10 and 11 and includes a first sleeve 141 threaded to the fixed ring 115, a second sleeve inserted into the first sleeve 141 A push rod 143 extending into the second sleeve 142 and a spring 143 connected between the first sleeve 141 and the push rod 143 to deflect the push rod 143 outwardly, The push rod 143 is deflected by the spring 144 such that the push rod 143 is pushed against the workpiece 500 to be machined wherein the workpiece 500 is supported on the corresponding one of the front and rear collars 102, Respectively.

2, 3 and 5, the machining apparatus 400 includes two turret units 401 disposed on the processing frame 100 and aligned with the front and rear collars 102, 112, respectively. The turret unit 401 can operate to synchronously process the two workpieces 500, respectively. Since the turret unit 401 is known in the art, it will not be described in detail.

5 and 7, each of the front and rear collars 102, 112 includes front and rear caps 101, 111 between the discharge position shown in Figures 5 and 6 and the clamping position shown in Figures 7 and 8, Can be moved relative to the corresponding one.

5 and 6, when the front and rear collets 102 and 112 are each disposed in the discharge position, the oil is supplied to the second oil path 94 in the inner cap 81 and to the second oil path 94 in the ring component 52 1 oil path 93 through the first oil hole 91 to the first oil chamber 73. [ At this time, since the first oil chamber 73 is positioned between the drive ring 72 and the drive sleeve 71, the drive ring 72 and the drive sleeve 71 are moved to the hydraulic pressure to move away from each other. The driving sleeve 72 moves the front connecting pipe 103 forward and the driving sleeve 71 pushes the movable sleeve 116 of the connecting mechanism 113 toward the front end of the rear connecting pipe 118, The connector tube 113 is moved backward. As a result, the front and rear connectors 103, 118 are moved away from each other, thereby removing the front and rear collets 102, 112 from the front and rear caps 101, 111, respectively, The workpiece 500 can be replaced by moving each of the workpieces 102 and 112 to the discharge position.

7 and 8, when the front and rear collets 102 and 112 are each disposed in the clamping position, the oil is introduced into the fourth oil path 96 in the inner cap 81 and the second oil path 96 in the ring component 52 3 oil path 95 through the second oil hole 92 to the second and third oil chambers 74, Since the second and third oil chambers 74 and 75 are located on two sides of the assembly of the drive ring 72 and the drive sleeve 71, the drive ring 72 and the drive sleeve 71 And is moved to the hydraulic pressure. The drive ring 72 moves the front connecting pipe 103 rearward and the driving sleeve 71 pulls the connecting mechanism 113 and the bolt 117 to move the rear connecting pipe 113 forward. As a result, the front and rear connectors 103, 118 are moved toward each other to engage the front and rear collars 102, 112 with the front and rear caps 101, 111, respectively, 112 to the clamping position to grasp the workpiece 500.

In view of the above, the processing equipment of the present invention has the following advantages.

1. Since the front connecting pipe 103 and the rear connecting pipe 118 of the connecting mechanism 113 are driven by the driving ring 72 and the driving sleeve 71 respectively the front and rear collets 102 and 112 are synchronized Lt; / RTI > In addition, since the front and rear collets 102, 112 are not interconnected by a single rigid body, their opening angles can be different from each other, so that workpieces 500 of different diameters can be provided to the front and rear collets 102, So that the machining precision can be improved.

2. With the above-described conventional chucking apparatus, two workpieces 500 having different diameters can not be simultaneously processed, which adversely affects the operation efficiency. The front and rear collets 102 and 112 of the processing equipment of the present invention are able to grasp both workpieces 500 firmly simultaneously, thereby effectively increasing the production capacity.

Referring to Figures 9 and 10, a second preferred embodiment of the processing equipment according to the invention is similar to the first preferred embodiment. The difference between the preferred first and second embodiments is that the processing frame 100 of the second preferred embodiment has a processing table 110 that is inclined. Therefore, the second preferred embodiment has the same advantages as the first preferred embodiment, and the tilting table 110 of the second preferred embodiment facilitates the collection of the processed wastes.

Although the present invention has been described, it is apparent that many modifications and changes may be made without departing from the scope and spirit of the present invention. Accordingly, the invention is limited only as indicated by the appended claims.

2: mounting member
3: Fixed sheet
4: Bearing unit
5:
6:
7: Pressure cylinder unit
8: Internal stationary unit
9: Oil path unit
10: Front chuck unit
11: rear chuck unit
12: Front cover
13: rear cover
14: Cutter positioning unit
21: receiving hole
31: annular portion
51: rear sleeve
52: Ring part
71: drive sleeve
72: drive ring
73, 74, 75: first, second and third oil chambers
81: Inner cap
82: outer cap
91, 92: First and second oil holes
93, 94, 95, 96: first, second, third and fourth oil passages
100: Processing frame
101: front cap
102: front collet
103: Front connector
104: front chuck hole
111: rear cap
112: rear collet
113:
114: rear chuck hole
115: Retaining ring
116: movable sleeve
117: Bolt
118: Rear connector
141, 142: First and second sleeves
143: push rod
144: spring
200: Driving device
300: Chuck device
400: Processing device
500: workpiece

Claims (9)

A chucking device (300) configured to be coupled to a drive device (200)
The chucking device (300)
A mounting member (2) having a receiving hole (21) centered on the axis (L);
A stationary seat (3) arranged in the receiving hole (21) and having an annular portion (31) formed to have a shaft hole (311) centered on the axis (L);
A bearing unit (4) disposed in the shaft hole (311) in the fixed seat (3);
A rear sleeve 51 extending rotatably through the bearing unit 4 along the axis L and a tapered inner surface 521 extending from the front end of the rear sleeve 51 A connecting member 5 including a ring component 52 having a ring shape;
A transmission member 6 connected by a sleeve on the ring component 52 and covering the ring component 52 and configured to be driven by the drive device 200 to rotate about the axis L;
A drive sleeve 72 disposed in the linking member 5 and adjacent the pointed inner surface 521, a drive ring 72 disposed within the ring component 52 and movable relative to the drive sleeve 71, , A first oil chamber (73) defined between the drive ring (72), the ring part (52) and the drive sleeve (71), the drive sleeve (71) A second oil chamber 74 defined between the inner surface 521 and a third oil chamber 75 defined between the drive ring 72 and the transmission member 6, ) Said drive sleeve (71) and said drive ring (72) being movable towards and away from each other along said axis (L);
An inner positioning unit 8 including an inner cap 81 covering the front end of the annular portion 31 and an outer cap 82 covering the front end of the annular portion 31 and the inner cap 81, );
A first oil hole 91 formed in the outer cap 82, a second oil hole 92 formed in the outer cap 82, a second oil hole 92 formed in the ring part 52, A second oil path (94) formed in the inner cap (81) and in fluid communication with the first oil path (93) and the first oil hole (91), a second oil path A third oil path 95 formed in the ring part 52 and in fluid communication with the second and third oil chambers 74 and 75 and the second oil path 95 formed in the inner cap 81, And a fourth oil path (96) in fluid communication with the third oil path (95);
A front collet 102 disposed on the front chuck hole 104 and a front collet 102 disposed on the transmission member 6 and having a dotted front chuck hole 104; A front chuck unit (10) including a front connecting pipe (103) connected between the rings (72); And
A rear cap 111 disposed on the rear sleeve 51 and having a dotted rear chuck hole 114, a rear collet 112 disposed in the rear chuck hole 114, and a rear collet 112 disposed on the rear sleeve 51 A rear chuck unit 11 including a connecting mechanism 113 connected between the driving sleeve 71 and the rear collet 112,
/ RTI >
Each of the front and rear collars (102, 112) is movable relative to a corresponding one of the front and rear caps (101, 111) between a discharge position and a clamping position,
The oil flows into the first oil chamber 73 through the first oil hole 91 to move the drive ring 72 and the drive sleeve 71 away from each other, The front and rear collars 102 and 112 are removed from the front and rear caps 101 and 111, respectively, by driving the front connecting tube 103 and the connecting mechanism 113 to move in the opposite direction,
In the clamping position, oil flows into the second and third oil chambers 74 and 75 through the second oil hole 92 to move the drive ring 72 and the drive sleeve 71 toward each other Thereby moving the front connecting tube 103 and the connecting mechanism 113 toward each other to engage the front and rear collets 102 and 112 with the front and rear caps 101 and 111 respectively Chuck device (300). The method according to claim 1,
The connection mechanism 113 includes a stationary ring 115 fixed to the rear sleeve 51, a plurality of equidistant movable sleeves 116 extending through the stationary ring 115, And a rear connecting pipe 118 having a plurality of bolts 117 that are movably extended through the bolts 117 and a rear end threaded to the bolts 117 and a rear end connected to the rear collet 112,
When each of the front and rear collets 102 and 112 is moved from the clamping position to the discharge position, the drive sleeve 71 moves the movable sleeve 116 to the front end of the rear connection tube 118 To move backward to push the bolts 117 and the rear connecting pipe 118 to remove the rear collet 112 from the rear cap 111,
When each of the front and rear collets 102 and 112 is moved from the discharge position to the clamping position, the drive sleeve 71 is moved forward to move forward of the bolt 117 and the rear connecting tube 118 (300) for driving said rear collet (112) to engage said rear cap (111). 3. The method of claim 2,
Further comprising two cutter positioning units (14) connected to the front and rear chuck units (10, 11), respectively,
Each of the cutter positioning units 14 includes a first sleeve 141 threaded to the stationary ring 115, a second sleeve 142 connected to the first sleeve 141, and a second sleeve 142 connected to the first and second sleeves 141, 142 is inserted into the other of the first and second sleeves 141, 142, a push rod 143 extending into the second sleeve 142 and a push rod 143 And a spring (144) connected between the first sleeve (141) and the push rod (143) to bias the first sleeve (141) outwardly. The method according to claim 1,
The mounting member (2) has front and rear end surfaces,
The chucking device 300 further comprises a front cover 12 disposed on the front end surface of the mounting member 2 and a rear cover 13 disposed on the rear end surface of the mounting member 2 Chuck device (300). As processing equipment,
A processing frame (100);
A driving device (200) disposed on the processing frame (100);
A chuck device (300) connected to the driving device (200); And
The machining device (400)
Lt; / RTI >
The chucking device (300)
A mounting member (2) having a receiving hole (21) centered on the axis (L);
A stationary seat (3) arranged in the receiving hole (21) and having an annular portion (31) formed to have a shaft hole (311) centered on the axis (L);
A bearing unit (4) disposed in the shaft hole (311) in the fixed seat (3);
A ring member 51 extending from the front end of the rear sleeve 51 and having a tapered inner surface 521, a rear sleeve 51 rotatably extending through the bearing unit 4 along the axis L, A connecting member (5) including a connecting member (52);
A transmission member 6 connected by a sleeve on the ring component 52 and covering the ring component 52 and driven by the drive device 200 to rotate about the axis L;
A pressure cylinder unit (7) movable along the axis (L), the pressure cylinder unit (7) comprising a drive sleeve (71) disposed in the connecting member (5) and adjacent the pointed inner surface (521) A drive ring 72 disposed within the ring part 52 and movable relative to the drive sleeve 71, a drive ring 72 defined between the ring part 52 and the drive sleeve 71, A first oil chamber 74 defined between the first oil chamber 73, the drive sleeve 71 and the pointed inner surface 521 of the ring part 52 and a second oil chamber 74 defined between the drive ring 72 and the And a third oil chamber (75) defined between the transmission members (6);
An inner positioning unit 8 including an inner cap 81 covering the front end of the annular portion 31 and an outer cap 82 covering the front end of the annular portion 31 and the inner cap 81, );
A first oil hole 91 formed in the outer cap 82, a second oil hole 92 formed in the outer cap 82, a second oil hole 92 formed in the ring part 52, A second oil path (94) formed in the inner cap (81) and in fluid communication with the first oil path (93) and the first oil hole (91), a second oil path A third oil path 95 formed in the ring part 52 and in fluid communication with the second and third oil chambers 74 and 75 and the second oil path 95 formed in the inner cap 81, And a fourth oil path (96) in fluid communication with the third oil path (95);
A front collet 102 disposed on the front chuck hole 104 and a front collet 102 disposed on the transmission member 6 and having a dotted front chuck hole 104; A front chuck unit (10) including a front connecting pipe (103) connected between the rings (72); And
A rear cap 111 disposed on the rear sleeve 51 and having a dotted rear chuck hole 114, a rear collet 112 disposed in the rear chuck hole 114, and a rear collet 112 disposed on the rear sleeve 51 A rear chuck unit 11 including a connecting mechanism 113 connected between the driving sleeve 71 and the rear collet 112,
/ RTI >
Wherein each of the front and rear collars (102, 112) is movable relative to a corresponding one of the front and rear caps (101, 111) between a discharge position and a clamping position,
The oil flows into the first oil chamber 73 through the first oil hole 91 to move the drive ring 72 and the drive sleeve 71 away from each other, Drives the forward movement of the front connecting tube 103 and the connecting mechanism 113 to remove the front and rear collets 102 and 112 from the front and rear caps 101 and 111 respectively,
In the clamping position, oil flows into the second and third oil chambers 74 and 75 through the second oil hole 92 to move the drive ring 72 and the drive sleeve 71 toward each other Thereby moving the front connecting tube 103 and the connecting mechanism 113 toward each other to engage the front and rear collets 102 and 112 with the front and rear caps 101 and 111 respectively ,
The processing apparatus 400 includes two turret units 401 disposed on the processing frame 100 and aligned with the front and rear collets 102 and 112, respectively. 6. The method of claim 5,
The connecting mechanism 113 of the chucking device 300 includes a stationary ring 115 fixed to the rear sleeve 51, a plurality of equidistantly movable sleeves 116 extending through the stationary ring 115, A plurality of bolts 117 each movably extending through the sleeve 116 and a rear connecting tube 118 having a front end threaded into the bolt 117 and a rear end connected to the rear collet 112 and,
When each of the front and rear collets 102 and 112 is moved from the clamping position to the discharge position, the drive sleeve 71 moves the movable sleeve 116 to the front end of the rear connection tube 118 To move backward to push the bolts 117 and the rear connecting pipe 118 to remove the rear collet 112 from the rear cap 111,
When each of the front and rear collets 102 and 112 is moved from the discharge position to the clamping position, the drive sleeve 71 is moved forward to move forward of the bolt 117 and the rear connecting tube 118 To move the rear collet (112) into engagement with the rear cap (111). 6. The method of claim 5,
The mounting member (2) has front and rear end surfaces,
The chucking device 300 further comprises a front cover 12 disposed on the front end surface of the mounting member 2 and a rear cover 13 disposed on the rear end surface of the mounting member 2 Processing equipment. The method according to claim 6,
The chucking device (300) further comprises two cutter positioning units (14) connected to the front and rear chuck units (10, 11), respectively,
Each of the cutter positioning units 14 includes a first sleeve 141 threaded to the stationary ring 115, a second sleeve 142 connected to the first sleeve 141, and a second sleeve 142 connected to the first and second sleeves 141, 142) is inserted into the other of the first and second sleeves (141, 142), a push rod (143) extending into the second sleeve (142), and a push rod And a spring (144) connected between the first sleeve (141) and the push rod (143) to deflect the first sleeve (141). 6. The method of claim 5,
The driving apparatus 200 includes a driving motor 201 disposed on the processing frame 100 and a transmission belt 202 connected between the motor 201 and the chucking device 300.

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