Jaw-shaped main shaft clamping seat

Abstract

The utility model discloses a claw-shaped main shaft clamping seat which comprises a clamping seat, and chucks are fixedly arranged on the two sides of the clamping seat. The cylinder body comprises a first piston sleeve arranged in the center of the clamping seat and a cylinder barrel annularly arranged outside the first piston sleeve, and a cavity is formed by a gap between the first piston sleeve and the cylinder barrel; the clamping device comprises sliding blocks movably arranged on the chucks on the two sides and clamping jaws fixedly arranged on the sliding blocks. The clamping jaw driving device is movably arranged in the cavity; the fourth transmission wheel is fixedly arranged on the cylinder barrel; the clamping devices are arranged on the two sides of the clamping base to achieve two-point fixing, the clamping force is increased, and meanwhile the stability of a clamped product is improved; and meanwhile, the synchronizing device is arranged at the bottom of the clamping seat, so that pollution such as oil stains and dust can be prevented from damaging the synchronizing device, and the situation that an operator is drawn into the synchronizing device in work can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping equipment, in particular to a claw-shaped main shaft clamping seat. Background Art

[0002] The spindle clamp is an important component of the machine tool. It clamps the workpiece so that the workpiece can accurately receive the processing force from the machine tool, thereby achieving precise processing. For example, the utility model with patent application number "CN201621033575.4" and name "A clamping chuck" discloses a clamping chuck, including at least two horizontal T-shaped grooves on the disk body, an axial hole in the center of the disk body, and the clamping jaws including a fixed bottom jaw and an upper jaw. The bottom jaw includes a bottom jaw plate and a side plate with an angle less than 90° with the bottom jaw plate. The bottom jaw plate has a bottom jaw slider, and the wedge sleeve is provided with at least two obliquely arranged oblique grooves matching the shape of the side plates. The angle between the oblique groove and the axis of the wedge sleeve is equal to the angle between the bottom jaw plate and the side plate. The clamping jaw is slidably set in the T-shaped groove through the bottom jaw slider, and the side plate is set in the oblique groove of the wedge sleeve. A pull rod is fixed on the wedge sleeve.

[0003] The single-sided clamping jaw design of the above-mentioned utility model patent cannot generate excessive clamping force, and thus cannot process extra-long workpieces. At the same time, the synchronization device is set on the other side of the chuck, which is not only susceptible to pollution such as dust and oil, causing accelerated wear and reducing service life, but also may cause the operator to be drawn into the synchronization device, resulting in serious work-related accidents.

[0004] Based on the above reasons, it is necessary to improve the existing technology. Utility Model Content

[0005] 1. Technical Problems to be Solved

[0006] The present invention aims at the above-mentioned defects in the prior art and proposes a claw-shaped spindle clamping seat to solve the problems raised in the above-mentioned background technology.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the utility model provides a claw-shaped spindle clamping seat, comprising a clamping seat, and chucks are fixedly arranged on both sides of the clamping seat;

[0009] A cylinder body, comprising a first piston sleeve disposed at the center of the chuck and a cylinder barrel disposed outside the first piston sleeve, wherein a gap between the first piston sleeve and the cylinder barrel forms a chamber;

[0010] A clamping device, comprising sliders movably arranged on the chucks on both sides and claws fixedly arranged on the sliders;

[0011] a claw driving device, the claw driving device being movably disposed in the chamber and being used to drive the claw to clamp or release;

[0012] a fourth transmission wheel, the fourth transmission wheel being fixedly disposed on the cylinder barrel;

[0013] A synchronization device is arranged at the bottom of the card seat, and one end of the synchronization device is in contact with the fourth transmission wheel.

[0014] In the above technical solution, the claw driving device includes a booster device, a second piston sleeve symmetrically arranged at both ends of the chamber, a third piston sleeve and a fourth piston sleeve movably arranged in the chamber, the third piston sleeve is fixedly connected to the second piston sleeve on the left, and a first cavity is formed therebetween, the fourth piston sleeve is fixedly connected to the second piston sleeve on the right, and a second cavity is formed therebetween, a gap is provided between the third piston sleeve and the fourth piston sleeve, a first oil circuit and a second oil circuit are provided on the cylinder barrel, a third oil circuit is provided on the first piston sleeve, the first oil circuit leads to the gap, the second oil circuit leads to the second cavity, and the third oil circuit leads to the first cavity, and a fourth oil circuit connected to the second oil circuit and the third oil circuit is provided on one side of the chuck.

[0015] In the above technical solution, a plug-in portion is extended from one side of the slider into the chamber, the plug-in portion is tilted downward, and an oblique slot for use with the plug-in portion is provided in the second piston sleeve.

[0016] In the above technical solution, a bearing sleeve is provided on the outer shell of the cylinder barrel, and a bearing is provided between the bearing sleeve and the cylinder barrel.

[0017] In the above technical solution, the synchronization device includes a frame fixedly arranged at the bottom of the card seat, a synchronous pulley rotatably arranged on one side of the frame, a first transmission shaft connected to the synchronous pulley at one end, a first transmission wheel sleeved on the first transmission shaft, a second transmission shaft arranged at the upper end of the first transmission shaft, a second transmission wheel and a third transmission wheel sleeved on the second transmission shaft, the first transmission wheel abuts against the second transmission wheel, and the third transmission wheel abuts against the fourth transmission wheel.

[0018] 3. Beneficial Effects

[0019] Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with clamping devices on both sides of the card seat to achieve two-point fixation, thereby increasing the clamping force and the stability of the clamped product. At the same time, the synchronization device is arranged at the bottom of the card seat, which can not only prevent oil, dust and other pollution from damaging the synchronization device, but also effectively prevent the operator from being drawn into the synchronization device at work. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0022] Figure 3 It is a structural schematic diagram of the synchronization device and the fourth transmission wheel of the utility model.

[0023] Figure 4 It is a schematic cross-sectional structure diagram of part of the utility model.

[0024] In the figure: 1 is a card seat, 10 is a chuck, 100 is a first cavity, 101 is a second cavity, 102 is a gap, 103 is a fourth oil circuit, 2 is a cylinder body, 20 is a first piston sleeve, 21 is a cylinder barrel, 22 is a chamber, 200 is a third oil circuit, 210 is a first oil circuit, 211 is a second oil circuit, 212 is a bearing sleeve, 213 is a bearing, 3 is a clamping device, 30 is a slider, 31 is a claw, 300 is a plug-in portion, 4 is a claw driving device, 40 is a second piston sleeve, 41 is a third piston sleeve, 42 is a fourth piston sleeve, 400 is an oblique slot, 5 is a fourth transmission wheel, 6 is a synchronization device, 60 is a frame, 61 is a synchronous pulley, 62 is a first transmission shaft, 63 is a first transmission wheel, 64 is a second transmission shaft, 65 is a second transmission wheel, and 66 is a third transmission wheel. DETAILED DESCRIPTION

[0025] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] See also Figure 1-4 The utility model provides a claw-shaped spindle clamping seat, comprising a clamping seat 1, with chucks 10 fixedly arranged on both sides of the clamping seat 1;

[0027] The cylinder body 2 includes a first piston sleeve 20 provided at the center of the cassette 1 and a cylinder barrel 21 provided around the first piston sleeve 20 , wherein a gap between the first piston sleeve 20 and the cylinder barrel 21 forms a chamber 22;

[0028] A clamping device 3, comprising a slider 30 movably provided on the chuck 10 on both sides and a clamping claw 31 fixedly provided on the slider 30;

[0029] a claw driving device 4, the claw driving device 4 being movably disposed in the chamber 22 and being used to drive the claw 3 to clamp or release;

[0030] A fourth transmission wheel 5, wherein the fourth transmission wheel 5 is fixedly disposed on the cylinder 21;

[0031] The synchronizing device 6 is arranged at the bottom of the card seat 1 , and one end of the synchronizing device 6 abuts against the fourth transmission wheel 5 .

[0032] In the above structure, the claws arranged on both sides of the chuck clamp the product to be processed at the same time, which not only increases the clamping force, but also increases the stability of the product by fixing it at two points. At the same time, the synchronization device is arranged at the bottom of the base, which can prevent oil, dust and other pollution from damaging the synchronization device, and can also effectively prevent the operator from being drawn into the working synchronization device.

[0033] Specifically, the claw driving device 4 includes a booster device, second piston sleeves 40 symmetrically arranged at both ends of the chamber 21, and a third piston sleeve 41 and a fourth piston sleeve 42 movably arranged in the chamber 21. The third piston sleeve 41 is fixedly connected to the second piston sleeve 40 on the left side, and a first cavity 100 is formed therebetween. The fourth piston sleeve 42 is fixedly connected to the second piston sleeve 40 on the right side, and a second cavity 101 is formed therebetween. A gap 102 is provided between the third piston sleeve 41 and the fourth piston sleeve 42. A first oil passage 210 and a second oil passage 211 are provided on the cylinder 21. A third oil passage 200 is provided on the first piston sleeve 20. The first oil passage 210 leads to the gap 102, the second oil passage 211 leads to the second cavity 101, and the third oil passage 200 leads to the first cavity 100. A fourth oil passage 103 communicating with the second oil passage 211 and the third oil passage 200 is provided on one side of the chuck 10.

[0034] Specifically, a plug-in portion 300 is extended into the chamber 21 on one side of the slider 30, and the plug-in portion 300 is inclined downward. The second piston sleeve 40 is provided with an oblique slot 400 used in conjunction with the plug-in portion 300. The obliquely arranged plug-in portion and the oblique slot can allow the slider to move radially through the oblique slot during axial movement. When the operator needs to clamp the claws, the operator starts the booster device, so that the booster device presses hydraulic oil into the gap through the first oil circuit, and the hydraulic oil pushes the third piston sleeve to drive the second piston sleeve to move to the left, and the hydraulic oil pushes the fourth piston sleeve to drive the second piston sleeve to move to the right. The oblique slot on the second piston sleeve is used in conjunction with the plug-in portion used with it, so that the slider The radial movement drives the claws to move radially to clamp the product; when the operator needs to loosen the claws, the booster device presses hydraulic oil into the fourth oil circuit, and the hydraulic oil is pressed into the second cavity from the second oil circuit and into the first cavity from the third oil circuit respectively. The hydraulic oil in the first cavity pushes the third piston sleeve to move the second piston sleeve on the left toward the middle, and the hydraulic oil in the second cavity pushes the fourth piston sleeve to drive the second piston sleeve on the right to move toward the middle, so that the plug-in part inserted into the oblique slot moves axially, and the slider drives the claws to move in the opposite radial direction, thereby loosening the product. The booster device uses different oil channels to pressurize the hydraulic oil to push the piston sleeve, which not only has high work efficiency and high efficiency, but also has fast response speed and high sensitivity.

[0035] Specifically, a bearing sleeve 212 is provided on the outer cover of the cylinder 21, and a bearing 213 is provided between the bearing sleeve 212 and the cylinder 21. The bearing sleeve is used to limit the bearing position, and the use of the bearing can ensure that the friction force of the cylinder is reduced when the cylinder rotates.

[0036] Specifically, the synchronization device 6 includes a frame 60 fixedly arranged at the bottom of the card seat 1, a synchronous pulley 61 rotatably arranged on one side of the frame 60, a first transmission shaft 62 connected to the synchronous pulley 61 at one end, a first transmission wheel 63 sleeved on the first transmission shaft 62, a second transmission shaft 64 arranged at the upper end of the first transmission shaft 62, a second transmission wheel 65 and a third transmission wheel 66 sleeved on the second transmission shaft 64, the first transmission wheel 63 abuts the second transmission wheel 65, and the third transmission wheel 66 abuts the fourth transmission wheel 5. When the operator needs to rotate the product for processing, the synchronous pulley is manually or electrically controlled to rotate, and the synchronous pulley rotates the belt The first transmission shaft is driven to rotate, and the first transmission wheel provided on the first transmission shaft rotates synchronously. The first rotating wheel abuts the second transmission wheel, thereby driving the second transmission wheel to rotate through friction. The rotation of the second transmission wheel drives the second transmission shaft to rotate synchronously, and the third transmission wheel on the second transmission shaft also rotates accordingly. The third transmission wheel abuts the fourth transmission wheel and drives the fourth transmission wheel through friction. The fourth transmission wheel is fixed on the cylinder and drives the cylinder to rotate, so that the entire cylinder drives the product to be processed to rotate. The synchronization device is arranged at the bottom of the card seat to effectively prevent pollution such as dust and increase the service life of the synchronization device. At the same time, the combination of the transmission wheel and the transmission shaft has the advantages of simple structure, low cost, easy maintenance, accurate transmission ratio, etc.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A claw-shaped spindle clamp, characterized in that: include: A card base (1), wherein chucks (10) are fixedly provided on both sides of the card base (1); A cylinder body (2), the cylinder body (2) comprising a first piston sleeve (20) arranged at the center of the chuck (1) and a cylinder barrel (21) arranged outside the first piston sleeve (20), wherein a gap between the first piston sleeve (20) and the cylinder barrel (21) forms a chamber (22); A clamping device (3), the clamping device (3) comprising sliders (30) movably arranged on the chuck (10) at both sides and claws (31) fixedly arranged on the sliders (30); a claw driving device (4), the claw driving device (4) being movably arranged in the chamber (22) and used for driving the claws (31) to clamp or release; a fourth transmission wheel (5), the fourth transmission wheel (5) being fixedly arranged on the cylinder barrel (21); A synchronization device (6) is provided at the bottom of the card seat (1), and one end of the synchronization device (6) is in contact with the fourth transmission wheel (5).

2. The claw-shaped spindle holder according to claim 1, characterized in that: The claw driving device (4) includes a pressure boosting device, a second piston sleeve (40) symmetrically arranged at both ends of the chamber (22), a third piston sleeve (41) and a fourth piston sleeve (42) movably arranged in the chamber (22), the third piston sleeve (41) being fixedly connected to the second piston sleeve (40) on the left side, and a first cavity (100) being formed therebetween, the fourth piston sleeve (42) being fixedly connected to the second piston sleeve (40) on the right side, and a second cavity (101) being formed therebetween, the third piston sleeve (41) and the fourth piston sleeve (42) being fixedly connected to the second piston sleeve (40) on the right side, and a second cavity (101) being formed therebetween, ), a first oil circuit (210) and a second oil circuit (211) are provided on the cylinder barrel (21), a third oil circuit (200) is provided on the first piston sleeve (20), the first oil circuit (210) leads to the gap (102), the second oil circuit (211) leads to the second cavity (101), the third oil circuit (200) leads to the first cavity (100), and a fourth oil circuit (103) in communication with the second oil circuit (211) and the third oil circuit (200) is provided on one side of the chuck (10).

3. The claw-shaped spindle holder according to claim 2, characterized in that: A plug-in portion (300) is extended from one side of the slider (30) into the chamber (22), and the plug-in portion (300) is tilted downward. An oblique slot (400) for use with the plug-in portion (300) is provided in the second piston sleeve (40).

4. The claw-shaped spindle holder according to claim 1, characterized in that: The outer shell of the cylinder barrel (21) is provided with a bearing sleeve (212), and a bearing (213) is provided between the bearing sleeve (212) and the cylinder barrel (21).

5. The claw-shaped spindle holder according to claim 1, characterized in that: The synchronization device (6) comprises a frame (60) fixedly arranged at the bottom of the card seat (1), a synchronous pulley (61) rotatably arranged on one side of the frame (60), a first transmission shaft (62) connected to the synchronous pulley (61) at one end, a first transmission wheel (63) sleeved on the first transmission shaft (62), a second transmission shaft (64) arranged at the upper end of the first transmission shaft (62), a second transmission wheel (65) and a third transmission wheel (66) sleeved on the second transmission shaft (64), the first transmission wheel (63) abutting against the second transmission wheel (65), and the third transmission wheel (66) abutting against the fourth transmission wheel (5).

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