Quick-change structure of large rotary clamping mechanism and using method of quick-change structure

Abstract

The invention discloses a quick-change structure of a large rotary clamping mechanism and a using method, and relates to the technical field of clamp replacement, the quick-change structure comprises a base, a rotary driving mechanism, an outer clamping tool, a linear driving mechanism, a clamping jaw, a first flange plate and a second flange plate, the first flange plate is rotatably arranged at one end of the base, and the second flange plate is rotatably arranged at the other end of the base; a linear driving mechanism and an outer clamping tool are installed in the base, one end of the outer clamping tool is detachably connected with the first flange plate, a second flange plate is arranged at the output end of the linear driving mechanism, the other end of the outer clamping tool is detachably connected with the second flange plate, and a plurality of clamping jaws are arranged at one end of the outer clamping tool. According to the machining equipment, the outer clamping tools can be rapidly replaced, the function that one piece of equipment can machine products of various models can be achieved by replacing different outer clamping tools, the machining capacity of the equipment is effectively improved, and the problem that one piece of equipment can only machine products of one model in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of fixture replacement, and in particular to a quick-change structure of a large rotary clamping mechanism and a use method thereof. Background Art

[0002] In the processing of mechanical parts, it is usually necessary to fix and clamp the parts in a certain way, and then process them by removing material, adding material, welding, etc. to meet the corresponding processing requirements of the parts.

[0003] The rotary clamping mechanism in the prior art mainly includes a rotating disk, on which a clamping claw and a motor are arranged, and the motor drives a connecting rod to drive the clamping claw to tighten, thereby clamping the workpiece. However, the position of the clamping claw of this rotary clamping mechanism is fixed and cannot be quickly replaced, and it can only adapt to the clamping of one type of workpiece. Summary of the invention

[0004] The purpose of the present invention is to provide a quick-change structure and a use method of a large-scale rotary clamping mechanism to solve the above-mentioned technical problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A quick-change structure of a large-scale rotating clamping mechanism comprises a base, a rotating drive mechanism, an external clamping tool, a linear drive mechanism, a clamping jaw, a first flange and a second flange. The first flange is rotatably provided at one end of the base, the linear drive mechanism and the external clamping tool are installed inside the base, one end of the external clamping tool is detachably connected to the first flange, the output end of the linear drive mechanism is provided with the second flange, the other end of the external clamping tool is detachably connected to the second flange, one end of the external clamping tool is provided with a plurality of the clamping jaws, the rotating drive mechanism is arranged on the base and can drive the first flange to rotate, and the linear drive mechanism can drive the external clamping tool to drive a plurality of the clamping jaws to rotate.

[0007] Preferably, it further includes a first annular guide rail, one end of the base is provided with the first annular guide rail, and the first flange is connected to the first annular guide rail.

[0008] Preferably, it further includes a second annular guide rail, the output end of the linear drive mechanism is provided with the second annular guide rail, and the second flange is connected to the second annular guide rail.

[0009] As a further preference, it further includes adjustment blocks, and a plurality of the adjustment blocks are disposed on the outer edge of the second flange.

[0010] Preferably, the rotary drive mechanism comprises a rotary motor and a gear ring, wherein the gear ring is arranged at the outer edge of the first flange, the rotary motor is arranged at one end of the base, and the output end of the rotary motor is meshed with the gear ring through a gear.

[0011] Preferably, the external clamping tooling includes an inner ring and an outer ring, the inner ring is arranged inside the outer ring, one end of the outer ring is arranged inside the base, the other end of the outer ring is bent outward to form a bending portion, the bending portion is detachably connected to the first flange, and one end of the inner ring is detachably connected to the second flange.

[0012] As a further preference, it further comprises a force-enhancing block, which is arranged at the other end of the inner ring and cooperates with the inclined surface of the clamping jaw.

[0013] As a further preference, it further includes guide shafts and positioning pins, a plurality of the guide shafts and the positioning pins are arranged on the first flange, and a plurality of guide holes and positioning holes are arranged on the bending portion.

[0014] As a further preference, it further includes a linear guide rail, which is arranged between the inner ring and the outer ring, and the linear guide rail connects the inner ring and the outer ring.

[0015] As a further preference, it also includes a clamping jaw seat and an elastic member, the clamping jaw seat is arranged on the bending portion, the middle part of the clamping jaw is hinged to the clamping jaw seat, one end of the clamping jaw is provided with a protective block, the other end of the clamping jaw is provided with a rotating shaft, and the other end of the clamping jaw cooperates with the inclined surface of the force-enhancing block.

[0016] A method for using a quick-change structure of a large rotary clamping mechanism, including the quick-change structure of the large rotary clamping mechanism, the method for using comprising:

[0017] S1. When replacing the external clamping tooling, first connect the external clamping tooling through the lifting device, then remove the bolts connecting the inner ring and the second flange, then remove the bolts between the bending part and the first flange, and take the external clamping tooling out of the base;

[0018] S2. Connect another external clamping tool to be installed through a sling, then extend the inner ring and outer ring of the external clamping tool to be installed into the base, and align the guide hole on the bent portion with the guide shaft so that the guide shaft is inserted into the guide hole;

[0019] S3. Then insert the positioning pin into the positioning hole, connect the bent part of the outer ring to the first flange through bolts, and then connect the inner ring to the second flange through bolts. At the same time, adjust the coaxiality of the external clamping fixture and the base through the adjustment block, so as to complete the rapid switching between the two external clamping fixtures.

[0020] The above technical solution has the following advantages or beneficial effects:

[0021] (1) In the present invention, the external card tooling can be quickly replaced. By replacing different external card tooling, one device can process multiple types of products, which effectively improves the processing capacity of the device and solves the problem that one device can only process one type of product.

[0022] (2) In the present invention, the external card tooling that needs to be replaced is a purely mechanical mechanism. During the replacement process, the plugging and unplugging and installation of air pipes, oil pipes, cables, etc. are not involved, which solves the problem of leakage and poor cable contact caused by plugging and unplugging pipes and cables when replacing the external card tooling.

[0023] (3) In the present invention, the process of replacing the external card tooling only involves tightening and loosening the screws, which is easy to operate and can be replaced quickly, thus solving the problem of time-consuming and labor-intensive replacement of the external card tooling.

[0024] (4) In the present invention, positioning pins are used for positioning and adjustment blocks are used for adjustment, thereby solving the problem of the external clamping fixture and the equipment being out of axial alignment after replacement. There is no need to adjust the accuracy of the detection equipment again after replacement.

[0025] (5) The cooperation between the external clamping fixture and the linear drive mechanism and the rotary drive mechanism in the present invention can achieve clamping, rotation and rapid replacement of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the quick-change structure of the large-scale rotary clamping mechanism of the present invention when the external clamping fixture is not installed;

[0027] Figure 2 yes Figure 1 Sectional view along AA direction;

[0028] Figure 3 yes Figure 2 The enlarged view of point B in the middle;

[0029] Figure 4 This is a schematic diagram of the quick-change structure of the large rotary clamping mechanism of the present invention. Figure 1 ;

[0030] Figure 5 yes Figure 4 Middle CC section view;

[0031] Figure 6 yes Figure 5 The enlarged view of point D in the middle;

[0032] Figure 7 This is a schematic diagram of the quick-change structure of the large rotary clamping mechanism of the present invention. Figure 2 ;

[0033] Figure 8 yes Figure 7 Middle EE section view;

[0034] Fig. 9 yes Figure 8 Enlarged view of point F in the middle.

[0035] In the figure: 1. base; 2. external clamping fixture; 201. inner ring; 202. outer ring; 203. bending part; 204. force amplifying block; 205. guide shaft; 206. positioning pin; 207. linear guide; 3. clamping jaw; 4. first flange; 5. second flange; 6. first annular guide; 7. second annular guide; 8. adjustment block; 9. rotating motor; 10. gear ring; 11. clamping jaw seat; 12. elastic member; 13. servo motor. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Figure 1 It is a structural schematic diagram of the quick-change structure of the large-scale rotary clamping mechanism of the present invention when the external clamping fixture is not installed; Figure 2 yes Figure 1 Sectional view along AA direction; Figure 3 yes Figure 2 The enlarged view of point B in the middle; Figure 4 This is a schematic diagram of the quick-change structure of the large rotary clamping mechanism of the present invention. Figure 1 ; Figure 5 yes Figure 4 Middle CC section view; Figure 6 yes Figure 5 The enlarged view of point D in the middle; Figure 7 This is a schematic diagram of the quick-change structure of the large rotary clamping mechanism of the present invention. Figure 2 ; Figure 8 yes Figure 7 Middle EE section view; Fig. 9 yes Figure 8 Enlarged view of F in the middle. See Figures 1 to 9 As shown, a preferred embodiment is shown, which is a quick-change structure of a large rotary clamping mechanism, including a base 1, a rotary drive mechanism, an external clamping fixture 2, a linear drive mechanism, a clamping jaw 3, a first flange 4 and a second flange 5. The first flange 4 is rotatably provided at one end of the base 1, and the linear drive mechanism and the external clamping fixture 2 are installed inside the base 1. One end of the external clamping fixture 2 is detachably connected to the first flange 4, and the output end of the linear drive mechanism is provided with a second flange 5. The other end of the external clamping fixture 2 is detachably connected to the second flange 5. One end of the external clamping fixture 2 is provided with a plurality of clamping jaws 3. The rotary drive mechanism is provided on the base 1 and can drive the first flange 4 to rotate. The linear drive mechanism can drive the external clamping fixture 2 to drive the plurality of clamping jaws 3 to rotate. See Figure 5 and Figure 8 As shown, two diameter sizes of external clamping fixtures 2 are disclosed. Due to the different diameters of the external clamping fixtures 2, the diameters of the rings formed by the plurality of clamping jaws 3 thereon are also different, which can adapt to workpieces of different diameter sizes, making it easy to achieve clamping of workpieces of various sizes by one device.

[0040] In this embodiment, a through hole is provided in the middle of the base 1, and the interior of the base 1 is hollow. The rotary drive mechanism is provided on the base 1 and the first flange 4, and is used to drive the first flange 4 to rotate, and the linear drive mechanism is used to drive the clamp 3 to rotate, so that the clamp 3 can clamp the workpiece, and the inclined surface between the linear drive mechanism and the clamp 3 can make the clamp 3 have a stronger clamping force, which is convenient for clamping the workpiece and preventing slipping during the workpiece clamping process.

[0041] In this embodiment, the external clamping tool 2 is detachably connected to the first flange 4 and the second flange 5 by bolts or screws, so as to facilitate the rapid replacement of the external clamping tool 2 .

[0042] The external clamping fixture 2 in this embodiment can clamp the workpiece and drive the workpiece to rotate at the same time.

[0043] Further, as a preferred embodiment, it also includes a first annular guide rail 6, one end of the base 1 is provided with the first annular guide rail 6, and the first flange 4 is connected to the first annular guide rail 6. It also includes a second annular guide rail 7, the output end of the linear drive mechanism is provided with the second annular guide rail 7, and the second flange 5 is connected to the second annular guide rail 7. Among them, the first annular guide rail 6 and the second annular guide rail 7 are both circular, a first slider is provided on the first annular guide rail 6, and a second slider is provided on the second annular guide rail 7. The first annular guide rail 6 is connected to the base 1, the first slider is connected to the first flange 4, the second annular guide rail 7 is connected to the output end of the linear drive mechanism, and the second slider is connected to the second flange 5.

[0044] The linear drive mechanism includes a servo motor 13 , and an output end of the servo motor 13 is connected to the second annular guide rail 7 .

[0045] In this embodiment, a linear guide 207 is further included, and a linear guide 207 is provided between the inner ring 201 and the outer ring 202, and the linear guide 207 connects the inner ring 201 and the outer ring 202. The rotation of the outer ring 202 can drive the inner ring 201 to rotate, and through the provision of the linear guide 207, the inner ring 201 can move relative to the outer ring 202, and when the inner ring 201 moves, it can drive the force-enhancing block 204 to squeeze the rotation and the inclined surface on the clamping jaw 3.

[0046] Further, as a preferred embodiment, it also includes an adjustment block 8, and a plurality of adjustment blocks 8 are provided on the outer edge of the second flange 5. The adjustment block 8 is used to adjust the coaxiality between the inner ring 201 and the base 1, thereby adjusting the coaxiality between the external clamping fixture 2 and the base 1, and the coaxiality between the external clamping fixture 2 and the base 1 can be ensured without further adjustment. The adjustment block 8 can move relative to the second flange 5 and can move along the radial direction of the second flange 5. A sliding hole can be provided on the second flange 5, and the adjustment block 8 is connected to the sliding hole by a bolt, and the adjustment block 8 can move along the sliding hole. By tightening the bolt, the position of the adjustment block 8 can be fixed.

[0047] Further, as a preferred embodiment, the rotary drive mechanism includes a rotary motor 9 and a gear ring 10, wherein the gear ring 10 is arranged at the outer edge of the first flange 4, the rotary motor 9 is arranged at one end of the base 1, and the output end of the rotary motor 9 is meshed with the gear ring 10 through a gear. The gear ring 10 is fixed to the outer edge of the first flange 4, and the rotary motor 9 can be connected to the base 1 by bolts. A plurality of bolt holes can be arranged radially on the base 1 for adjusting the position of the rotary motor 9 so that the gear on the rotary motor 9 can always mesh with the gear ring 10. When the rotary motor 9 rotates, it can drive the gear to rotate, and the gear drives the gear ring 10 to drive the first flange 4 to rotate, and when the first flange 4 rotates, it can drive the outer ring 202 to rotate. Since the outer ring 202 is connected to the inner ring 201 by a linear guide 207, the relative rotation between the inner ring 201 and the outer ring 202 is limited, so that the outer ring 202 can drive the inner ring 201 to rotate.

[0048] Further, as a preferred embodiment, the outer clamping fixture 2 includes an inner ring 201 and an outer ring 202, the inner ring 201 is arranged inside the outer ring 202, one end of the outer ring 202 is arranged inside the base 1, the other end of the outer ring 202 is bent outward to form a bending portion 203, the bending portion 203 is detachably connected to the first flange 4, and one end of the inner ring 201 is detachably connected to the second flange 5. Fig. 9 As shown, the bent portion at one end of the outer ring 202 extends out of the base 1 and is connected to the first flange 4 by bolts, and the other end of the outer ring 202 is located inside the base 1. The inner ring 201 can move axially relative to the outer ring 202, but the two cannot rotate relative to each other.

[0049] Further, as a preferred embodiment, it also includes a booster block 204, which is arranged at the other end of the inner ring 201, and the booster block 204 cooperates with the inclined surface of the clamping jaw 3. One end of the booster block 204 is fixedly connected to the other end of the inner ring 201, and the other end surface of the booster block 204 is provided with a first inclined surface, and the other end of the clamping jaw 3 is provided with a second inclined surface, and the first inclined surface and the second inclined surface are in contact with each other, so that the booster block 204 can drive the clamping jaw 3 to rotate when it moves. The inclined surface cooperation between the booster block 204 and the clamping jaw 3 can provide a greater force for the clamping jaw 3 and avoid slipping between the clamping jaw 3 and the workpiece.

[0050] Further, as a preferred embodiment, it further includes guide shafts 205 and positioning pins 206. A plurality of guide shafts 205 and positioning pins 206 are provided on the first flange 4, and a plurality of guide holes and positioning holes are provided on the bent portion 203. The guide shafts 205 cooperate with the guide holes to facilitate the stable axial movement of the outer ring 202, and the positioning pins 206 cooperate with the positioning holes to facilitate the precise positioning of the outer ring 202 after the outer ring 202 is installed in place.

[0051] Further, as a preferred embodiment, it also includes a clamping jaw seat 11 and an elastic member 12. The clamping jaw seat 11 is arranged on the bending portion 203. The middle part of the clamping jaw 3 is hinged to the clamping jaw seat 11. A protective block is arranged at one end of the clamping jaw 3, and a rotating shaft is arranged at the other end of the clamping jaw 3. The other end of the clamping jaw 3 cooperates with the inclined surface of the force-enhancing block 204. The elastic member 12 is a spring, and one end of the spring is connected to one end of the clamping jaw 3, and the other end of the spring is connected to the clamping jaw seat 11. Among them, the rotating shaft and the clamping jaw 3 can rotate. When the first inclined surface on the force-enhancing block 204 contacts the rotating shaft, the rotating shaft can rotate to reduce the friction between the two, so as to facilitate the normal movement of the force-enhancing block 204, until the first inclined surface on the force-enhancing block 204 contacts the second inclined surface of the clamping jaw 3. At this time, the force-enhancing block 204 can push the clamping jaw 3 to rotate, so that the clamping jaw 3 clamps the workpiece, and when the force-enhancing block 204 retreats, the clamping jaw 3 can automatically rotate under the action of the spring, thereby releasing the workpiece. A protection block is provided at one end of the clamping jaw 3 to protect the workpiece and prevent the workpiece from being worn.

[0052] On the basis of the above embodiments, the present invention further discloses a method for using a quick-change structure of a large rotary clamping mechanism, the method comprising:

[0053] S1. When replacing the external clamping fixture 2, first connect the external clamping fixture 2 through the lifting device, then remove the bolts connecting the inner ring 201 and the second flange 5, then remove the bolts between the bent portion 203 and the first flange 4, and remove the external clamping fixture 2 from the base 1;

[0054] S2, connect another external clamping tool 2 to be installed through a hanger, then extend the inner ring 201 and the outer ring 202 of the external clamping tool 2 to be installed into the base 1, and align the guide hole on the bending portion 203 with the guide shaft 205, so that the guide shaft 205 is inserted into the guide hole;

[0055] S3. Then insert the positioning pin 206 into the positioning hole, and connect the bent portion 203 of the outer ring 202 to the first flange 4 through bolts, and then connect the inner ring 201 to the second flange 5 through bolts. At the same time, adjust the coaxiality of the external clamping fixture 2 and the base 1 through the adjustment block 8, so as to complete the rapid switching between the two external clamping fixtures 2.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. The quick-change structure of the large rotary clamping mechanism is characterized by: It includes a base, a rotary drive mechanism, an external clamping tool, a linear drive mechanism, a clamping jaw, a first flange and a second flange. The first flange is rotatably provided at one end of the base, the linear drive mechanism and the external clamping tool are installed inside the base, one end of the external clamping tool is detachably connected to the first flange, the output end of the linear drive mechanism is provided with the second flange, the other end of the external clamping tool is detachably connected to the second flange, one end of the external clamping tool is provided with a plurality of the clamping jaws, the rotary drive mechanism is arranged on the base and can drive the first flange to rotate, and the linear drive mechanism can drive the external clamping tool to drive the plurality of the clamping jaws to rotate.

2. The quick-change structure of the large rotary clamping mechanism according to claim 1, characterized in that: It also includes a first annular guide rail. One end of the base is provided with the first annular guide rail, and the first flange is connected to the first annular guide rail.

3. The quick-change structure of the large rotary clamping mechanism according to claim 1, characterized in that: It also includes a second annular guide rail. The output end of the linear drive mechanism is provided with the second annular guide rail, and the second flange is connected to the second annular guide rail.

4. The quick-change structure of the large rotary clamping mechanism according to claim 3, characterized in that: It also includes adjustment blocks, and a plurality of the adjustment blocks are arranged on the outer edge of the second flange.

5. The quick-change structure of the large rotary clamping mechanism according to claim 1, characterized in that: The rotary drive mechanism comprises a rotary motor and a gear ring, wherein the gear ring is arranged at the outer edge of the first flange, the rotary motor is arranged at one end of the base, and the output end of the rotary motor is meshed with the gear ring through a gear.

6. The quick-change structure of the large rotary clamping mechanism according to claim 1, characterized in that: The outer clamping fixture includes an inner ring and an outer ring, the inner ring is arranged inside the outer ring, one end of the outer ring is arranged inside the base, the other end of the outer ring is bent outward to form a bending portion, the bending portion is detachably connected to the first flange plate by bolts, and one end of the inner ring is detachably connected to the second flange plate by bolts.

7. The quick-change structure of the large rotary clamping mechanism according to claim 6, characterized in that: It also includes a force-enhancing block, which is arranged at the other end of the inner ring and cooperates with the inclined surface of the clamping jaw.

8. The quick-change structure of the large rotary clamping mechanism according to claim 6, characterized in that: It also includes guide shafts and positioning pins. The first flange is provided with a plurality of guide shafts and positioning pins. The bending portion is provided with a plurality of guide holes and positioning holes.

9. The quick-change structure of the large rotary clamping mechanism according to claim 6, characterized in that: It also includes a linear guide rail, which is arranged between the inner ring and the outer ring, and connects the inner ring and the outer ring.

10. A method for using a quick-change structure of a large rotary clamping mechanism, characterized in that: A quick-change structure comprising a large rotary clamping mechanism according to any one of claims 1 to 9, wherein the method of use comprises: S1. When replacing the external clamping tooling, first connect the external clamping tooling through the lifting device, then remove the bolts connecting the inner ring and the second flange, then remove the bolts between the bending part and the first flange, and take the external clamping tooling out of the base; S2. Connect another external clamping tool to be installed through a sling, then extend the inner ring and outer ring of the external clamping tool to be installed into the base, and align the guide hole on the bent portion with the guide shaft so that the guide shaft is inserted into the guide hole; S3. Then insert the positioning pin into the positioning hole, connect the bent part of the outer ring to the first flange through bolts, and then connect the inner ring to the second flange through bolts. At the same time, adjust the coaxiality of the external clamping fixture and the base through the adjustment block, so as to complete the rapid switching between the two external clamping fixtures.

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