An adjustable clamping tool and method of operation

Abstract

The application discloses an adjustable clamping tool and an operation method, relates to the technical field of clamping tools, and comprises a base, a bottom cover is fixedly installed on one side of the top of the base, a top cover is arranged above the bottom cover, a first clamping mechanism is arranged in the bottom cover, the first clamping mechanism comprises a rotating piece, the rotating piece is rotatably installed in the bottom cover, a first clamping wheel is installed at one end of the rotating piece, a guide wheel is installed at the other end of the rotating piece, a moving piece is slidably installed in the bottom cover, and the rotating piece is symmetrically distributed along the center line of the moving piece. Through cooperation between the first clamping mechanism and the driving mechanism, regular cylindrical castings can be conveniently clamped and processed; through cooperation between the driving mechanism and the electric cylinder, when the clamping of the driving mechanism on the castings is released after the castings are processed, the electric cylinder is close to the castings, the electric cylinder works to push the castings to move outward, and the function of facilitating discharging is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamping fixtures, in particular to an adjustable clamping fixture and an operation method. BACKGROUND

[0002] The fixture clamp is a process device used to quickly fasten the workpiece during processing, so that the machine tool, tool and workpiece maintain the correct relative position, that is, the fixture clamp is an indispensable part of mechanical processing. With the development of machine tool technology towards high speed, high efficiency, precision, combination, intelligence and environmental protection, fixture technology is developing towards high precision, high efficiency, module, combination, general purpose and economy. The fixture clamp needs to be used in the process of casting processing.

[0003] After searching, a kind of adjustable clamping fixture device is disclosed in the public number CN219599274U, including bottom plate, fixed seat fixed in the lower part of the bottom plate by height adjusting device, the bottom plate includes the outer convex part arranged on the upper part of the bottom plate, by pulling pull rod, then workpiece is placed between pressing block and fixed seat and is compressed by the elastic force of spring The pressing block is compressed on the fixed seat, so that the positioning and clamping of the workpiece are completed, and it is suitable for different diameters of workpiece use, but the stability of the casting is low by the spring, the casting moves in the process of processing, reduces the precision of processing, and the above-mentioned fixture can only be clamped to the relatively regular casting in the process of use, when the external shape of casting is irregular, it is difficult to clamp it, and when the clamping of casting is released, it is inconvenient to push out the casting, and the problem of unloading is inconvenient.

[0004] Based on this, an adjustable clamping fixture and an operation method are provided, which can eliminate the disadvantages of the existing device. SUMMARY

[0005] The present application aims to provide an adjustable clamping fixture and an operation method to solve the problem of unstable clamping structure and inconvenient clamping of irregular castings in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] An adjustable clamping fixture, comprising a base, a bottom cover is fixedly installed on one side of the top of the base, a top cover is arranged above the bottom cover, a first clamping mechanism is arranged in the inside of the bottom cover, the first clamping mechanism comprises a rotating piece, the rotating piece is rotatably installed in the inside of the bottom cover, a first clamping wheel is installed on one end of the rotating piece, a guide wheel is installed on the other end of the rotating piece, a moving piece is slidably installed in the inside of the bottom cover, the rotating pieces are symmetrically distributed along the center line of the moving piece, guide surfaces are formed on both sides of the outside of the moving piece, the outside of the guide wheel is in close contact with the guide surfaces, a second clamping wheel is installed on one end of the moving piece, and a driving mechanism is arranged on the other end of the moving piece.

[0008] Based on the technical scheme, the application further provides the following optional technical schemes.

[0009] In an optional scheme, the driving mechanism comprises a first rack fixedly installed at the other end of the moving part, a gear engaged with the first rack, a second rack engaged with the gear, and the second rack is slidingly installed with the top cover.

[0010] In an optional scheme, the first rack is externally fitted with a fixed block, the fixed block is fixedly installed with the bottom cover, the fixed block is rotatably installed with the gear, one end of the gear is splinedly connected with a first motor, and the first motor is fixedly installed with the fixed block.

[0011] In an optional scheme, the bottom cover is internally fixedly installed with a spring on each side wall, and one end of the spring is fixedly installed with the rotating part.

[0012] In an optional scheme, one end of the second rack is fixedly installed with an electric cylinder, the output end of the electric cylinder is provided with a first soft pad, and the top cover is externally provided with a through hole.

[0013] In an optional scheme, the top of the base is provided with a moving mechanism on the other side.

[0014] In an optional scheme, the moving mechanism comprises an installation slot, the installation slot is provided in the top of the base, a lead screw is rotatably installed in the installation slot, a second motor is splinedly connected with the input end of the lead screw, the second motor is fixedly installed with the base, and the lead screw is externally provided with a second clamping mechanism.

[0015] In an optional scheme, the second clamping mechanism comprises a moving seat, the moving seat is threadedly connected with the lead screw, the moving seat is externally provided with a first sliding groove, a first rotating seat is slidingly installed with the moving seat through the first sliding groove, the first rotating seat is externally symmetrically provided with a second sliding groove, a second rotating seat is slidingly installed with the first rotating seat through the second sliding groove, the second rotating seat is externally symmetrically provided with a third sliding groove, a third rotating seat is slidingly installed with the second rotating seat through the third sliding groove, and the third rotating seat is externally provided with a second soft pad.

[0016] In an optional scheme, the first sliding groove, the second sliding groove, and the third sliding groove are all semicircular in shape.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] 1、The first clamping mechanism and the driving mechanism are matched, the regular cylindrical casting is clamped conveniently, two first clamping wheels and second clamping wheels are used to clamp the casting, the casting is conveniently oriented and positioned, and the clamping precision is improved.

[0019] 2、The driving mechanism and the electric cylinder are matched, the clamping of the casting is released after the driving mechanism works when the casting is finished, the electric cylinder is close to the casting at the moment, the electric cylinder works to push the casting to move outward, and the function of facilitating discharging is achieved.

[0020] 3、The two first clamping wheels, the moving mechanism and the second clamping mechanism are matched, the irregular-shaped casting is conveniently clamped, the adaptability of the clamping tool is improved, and the casting machining efficiency is improved. DRAWINGS

[0021] Figure 1 It is a structural schematic view of the present application.

[0022] Figure 2 It is a bottom cover internal structure schematic view of the present application.

[0023] Figure 3 It is a first clamping mechanism structure schematic view of the present application.

[0024] Figure 4 It is a driving mechanism structure schematic view of the present application.

[0025] Figure 5 It is a moving mechanism structure schematic view of the present application.

[0026] Figure 6 It is a second clamping mechanism structure schematic view of the present application.

[0027] The figure mark annotation: 1, base; 2, bottom cover; 3, top cover; 4, first clamping mechanism; 401, rotating part; 402, first clamping wheel; 403, guide wheel; 404, moving part; 405, guide surface; 406, second clamping wheel; 5, spring; 6, fixed block; 7, driving mechanism; 701, gear; 702, first rack; 703, second rack; 8, first motor; 9, electric cylinder; 10, first soft pad; 11, through hole; 12, moving mechanism; 1201, installation groove; 1202, screw rod; 1203, second motor; 13, second clamping mechanism; 1301, moving seat; 1302, first sliding groove; 1303, first rotating seat; 1304, second sliding groove; 1305, second rotating seat; 1306, third sliding groove; 1307, third rotating seat; 1308, second soft pad. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments.

[0029] In one embodiment, as shown in Figures 1-6 A adjustable clamping tool, including a base 1, the top side of the base 1 is fixedly installed with a bottom cover 2, the top of the bottom cover 2 is provided with a top cover 3, the inside of the bottom cover 2 is provided with a first clamping mechanism 4, the first clamping mechanism 4 includes a rotating part 401, the rotating part 401 is rotatably installed in the inside of the bottom cover 2, one end of the rotating part 401 is installed with a first clamping wheel 402, the other end of the rotating part 401 is installed with a guide wheel 403, the inside of the bottom cover 2 is slidably installed with a moving part 404, the rotating part 401 is symmetrically distributed along the center line of the moving part 404, the outside of both sides of the moving part 404 is provided with a guide surface 405, the outside of the guide wheel 403 is fitted with the guide surface 405, one end of the moving part 404 is installed with a second clamping wheel 406, the other end of the moving part 404 is provided with a driving mechanism 7.

[0030] In this embodiment, when clamping the regular cylindrical casting, the casting is placed between the two first clamping wheels 402 and the second clamping wheel 406, the first rack 702 drives the moving part 404 to move, due to the cooperation of the guide surface 405 and the guide wheel 403, the two rotating parts 401 rotate, the two first clamping wheels 402 approach the casting, the moving part 404 drives the second clamping wheel 406 to approach the casting, thereby effectively clamping the casting.

[0031] In one embodiment, as shown in Figures 2-4 The driving mechanism 7 includes a first rack 702, the first rack 702 is fixedly installed at the other end of the moving part 404, the top of the first rack 702 is meshingly connected with a gear 701, the top of the gear 701 is meshingly connected with a second rack 703, the second rack 703 is slidably installed with the top cover 3; the first rack 702 and the second rack 703 move in opposite directions by rotating the gear 701.

[0032] In one embodiment, as shown in Figures 2-4 The outside of the first rack 702 is fitted with a fixed block 6, the fixed block 6 is fixedly installed between the bottom cover 2, the fixed block 6 is rotatably installed with the gear 701, one end of the gear 701 is spline-connected with a first motor 8, the first motor 8 is fixedly installed with the fixed block 6; the fixed block 6 limits the movement of the first rack 702, the first motor 8 works to drive the gear 701 to rotate.

[0033] In one embodiment, as shown in Figure 2 andFigure 3 As shown in the figure, the inside two side walls of the bottom cover 2 are fixedly installed with springs 5, one end of the spring 5 is fixedly installed with the rotating part 401; the spring 5 plays a role of resetting, so that the guide wheel 403 and the guide surface 405 are always attached, effectively controlling the rotation of the rotating part 401.

[0034] In one embodiment, as shown in Figure 2 and Figure 4 As shown in the figure, one end of the second rack 703 is fixedly installed with an electric cylinder 9, the output end of the electric cylinder 9 is provided with a first soft pad 10, and the outside of the top cover 3 is provided with a through hole 11; after the casting is finished, the first soft pad 10 is driven by the electric cylinder 9 to pass through the through hole 11 and penetrate the top cover 3, the first soft pad 10 contacts the casting, effectively pushing the casting out, facilitating the blanking treatment of the casting.

[0035] In one embodiment, as shown in Figure 1 and Figure 5 As shown in the figure, the other side of the top of the base 1 is provided with a moving mechanism 12, and the moving mechanism 12 controls the movement of the second clamping mechanism 13.

[0036] In one embodiment, as shown in Figure 1 and Figure 5 As shown in the figure, the moving mechanism 12 includes an installation slot 1201, the installation slot 1201 is opened in the top of the base 1, the inside of the installation slot 1201 is rotatably installed with a lead screw 1202, the input end of the lead screw 1202 is connected with a second motor 1203 through a key groove, the second motor 1203 is fixedly installed with the base 1, and the outside of the lead screw 1202 is provided with the second clamping mechanism 13; the lead screw 1202 is driven to rotate by the second motor 1203, and the second clamping mechanism 13 is moved by the rotation of the lead screw 1202.

[0037] In one embodiment, as shown in Figure 5 and Figure 6As shown, the second clamping mechanism 13 comprises a moving seat 1301 which is in threaded connection with the lead screw 1202, a first sliding groove 1302 is formed in the outer portion of the moving seat 1301, a first rotating seat 1303 is slidably installed on the outer portion of the moving seat 1301 through the first sliding groove 1302, a second sliding groove 1304 is symmetrically formed in the outer portion of the first rotating seat 1303, a second rotating seat 1305 is slidably installed on the outer portion of the first rotating seat 1303 through the second sliding groove 1304, a third sliding groove 1306 is symmetrically formed in the outer portion of the second rotating seat 1305, a third rotating seat 1307 is slidably installed on the outer portion of the second rotating seat 1305 through the third sliding groove 1306, a second soft pad 1308 is arranged on the outer portion of the third rotating seat 1307, through the cooperation of the first sliding groove 1302 and the first rotating seat 1303, the cooperation of the second sliding groove 1304 and the second rotating seat 1305 and the cooperation of the third sliding groove 1306 and the third rotating seat 1307, the four second soft pads 1308 are all in contact with the irregular castings, thereby effectively clamping the irregular castings.

[0038] In one embodiment, as Figure 6 As shown, the shapes of the first sliding groove 1302, the second sliding groove 1304 and the third sliding groove 1306 are all semicircular arcs, which facilitates clamping of the irregular castings.

[0039] The working principle of the present application is that when clamping a regular cylindrical casting, the casting is placed between the two first clamping wheels 402 and the second clamping wheel 406, the first gear 701 is driven to rotate by the work of the first motor 8, the first gear 701 drives the first rack 702 to move outwardly of the bottom cover 2, the first rack 702 drives the moving part 404 to move, due to the cooperation of the guide surface 405 and the guide wheel 403, the two rotating parts 401 are rotated, the spring 5 is compressed, the two first clamping wheels 402 are close to the casting, the moving part 404 drives the second clamping wheel 406 to be close to the casting, thereby effectively clamping the casting, at the same time, the second rack 703 is driven to move inwardly of the bottom cover 2 by the gear 701, and the electric cylinder 9 is driven to enter the interior of the bottom cover 2 by the second rack 703.

[0040] After the processing is completed, the first motor 8 reverses rotation, the gear 701 rotates to drive the first rack 702 to move to the inside of the bottom cover 2, the first rack 702 drives the moving piece 404 to move, and due to the resetting action of the spring 5, the rotating piece 401 rotates, the two first clamping wheels 402 move away from the casting, the moving piece 404 drives the second clamping wheel 406 to enter the inside of the bottom cover 2, the clamping of the casting is released, at the same time, the gear 701 drives the second rack 703 to move, the second rack 703 drives the electric cylinder 9 to move to the outside of the bottom cover 2, the first soft pad 10 penetrates through the top cover 3 through the through hole 11 by the work of the electric cylinder 9, the first soft pad 10 contacts the casting, effectively pushes the casting out, and facilitates the blanking treatment of the casting.

[0041] When the irregular casting needs to be clamped, the moving piece 404 moves to the inside of the bottom cover 2, the two rotating pieces 401 open to the maximum, the casting is placed between the two first clamping wheels 402 and the second clamping mechanism 13, the screw rod 1202 rotates by the work of the second motor 1203, the moving seat 1301 approaches the casting by the rotation of the screw rod 1202, the four second soft pads 1308 are all in close contact with the irregular casting by the cooperation of the first sliding groove 1302 and the first rotating seat 1303, the cooperation of the second sliding groove 1304 and the second rotating seat 1305, and the cooperation of the third sliding groove 1306 and the third rotating seat 1307, thereby effectively clamping the irregular casting, and after the processing is completed, the second motor 1203 reverses rotation, and the moving seat 1301 moves away from the casting.

[0042] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An adjustable clamping fixture, comprising a base (1), a bottom cover (2) fixedly mounted on one side of the top of the base (1), a top cover (3) provided above the bottom cover (2), and a first clamping mechanism (4) provided inside the bottom cover (2), characterized in that, The first clamping mechanism (4) includes a rotating component (401), which is rotatably mounted inside the bottom cover (2). A first clamping wheel (402) is mounted on one end of the rotating component (401), and a guide wheel (403) is mounted on the other end of the rotating component (401). A moving component (404) is slidably mounted inside the bottom cover (2). The rotating component (401) is symmetrically distributed along the center line of the moving component (404). Guide surfaces (405) are provided on both sides of the outer side of the moving component (404). The outer side of the guide wheel (403) is in contact with the guide surface (405). A second clamping wheel (406) is mounted on one end of the moving component (404), and a driving mechanism (7) is provided on the other end of the moving component (404). The drive mechanism (7) includes a first rack (702), which is fixedly installed on the other end of the moving part (404). A gear (701) is meshed above the first rack (702), and a second rack (703) is meshed above the gear (701). The second rack (703) is slidably installed with the top cover (3). Fixing blocks (6) are attached to the outer sides of the first rack (702). The fixing blocks (6) are fixedly installed with the bottom cover (2). The fixing blocks (6) are rotatably installed with the gear (701). A first motor (8) is connected to one end of the gear (701) via a keyway. The first motor (8) is fixedly installed with the fixing block (6). An electric cylinder (9) is fixedly installed at one end of the second rack (703). A first soft pad (10) is provided at the output end of the electric cylinder (9). A through hole (11) is opened on one side of the outer side of the top cover (3). A moving mechanism (12) is provided on the other side of the top of the base (1). The moving mechanism (12) includes a mounting groove (1201). The mounting groove (1201) is opened on the top of the base (1). A lead screw (1202) is rotatably installed inside the mounting groove (1201). A second motor (1203) is connected to the keyway at the input end of the lead screw (1202). The second motor (1203) is fixedly installed with the base (1). A second clamping mechanism (13) is provided on the outside of the lead screw (1202).

2. The adjustable clamping fixture according to claim 1, characterized in that, Springs (5) are fixedly installed on both sides of the inner side wall of the bottom cover (2), and one end of the spring (5) is fixedly installed with the rotating part (401).

3. The adjustable clamping fixture according to claim 2, characterized in that, The second clamping mechanism (13) includes a movable seat (1301), which is threadedly connected to the lead screw (1202). A first sliding groove (1302) is provided on the outside of the movable seat (1301). A first rotating seat (1303) is slidably mounted on the outside of the movable seat (1301) through the first sliding groove (1302). A second sliding groove (1304) is symmetrically provided on the outside of the first rotating seat (1303). A second rotating seat (1305) is slidably mounted on the outside of the first rotating seat (1303) through the second sliding groove (1304). A third sliding groove (1306) is symmetrically provided on the outside of the second rotating seat (1305). A third rotating seat (1307) is slidably mounted on the outside of the second rotating seat (1305) through the third sliding groove (1306). A second soft pad (1308) is provided on the outside of the third rotating seat (1307).

4. The adjustable clamping fixture according to claim 3, characterized in that, The first groove (1302), the second groove (1304) and the third groove (1306) are all semi-circular arcs.

5. A method for operating the adjustable clamping fixture as described in claim 4, characterized in that, Includes the following steps: Step 1: When clamping a regular cylindrical casting, the casting is placed between two first clamping wheels (402) and a second clamping wheel (406). The first motor (8) drives the gear (701) to rotate. The gear (701) drives the first rack (702) to move to the outside of the bottom cover (2). The first rack (702) drives the moving part (404) to move. Due to the cooperation between the guide surface (405) and the guide wheel (403), the two rotating parts (401) rotate, the spring (5) is compressed, the two first clamping wheels (402) move closer to the casting, and the moving part (404) drives the second clamping wheel (406) to move closer to the casting, thereby effectively clamping the casting. At the same time, the gear (701) drives the second rack (703) to move to the inside of the bottom cover (2). The second rack (703) drives the electric cylinder (9) to enter the inside of the bottom cover (2). Step 2: After processing is completed, the first motor (8) rotates in the reverse direction, the gear (701) rotates and drives the first rack (702) to move into the bottom cover (2), the first rack (702) drives the moving part (404) to move, due to the reset effect of the spring (5), the rotating part (401) rotates, the two first clamping wheels (402) move away from the casting, the moving part (404) drives the second clamping wheel (406) to enter the bottom cover (2), the clamping of the casting is released, at the same time the gear (701) drives the second rack (703) to move, the second rack (703) drives the electric cylinder (9) to move out of the bottom cover (2), through the operation of the electric cylinder (9) drives the first soft pad (10) to pass through the through hole (11) through the top cover (3), the first soft pad (10) contacts the casting, effectively pushes the casting out, and facilitates the unloading of the casting; Step 3: When it is necessary to clamp the irregular casting, the moving part (404) moves to the innermost part of the bottom cover (2), and the two rotating parts (401) open to the maximum. The casting is placed between the two first clamping wheels (402) and the second clamping mechanism (13). The second motor (1203) drives the lead screw (1202) to rotate. The rotation of the lead screw (1202) drives the moving seat (1301) to approach the casting. Through the cooperation of the first sliding groove (1302) and the first rotating seat (1303), the cooperation of the second sliding groove (1304) and the second rotating seat (1305), and the cooperation of the third sliding groove (1306) and the third rotating seat (1307), the four second soft pads (1308) are all in contact with the irregular casting, thereby effectively clamping the irregular casting. After the processing is completed, the second motor (1203) rotates in the opposite direction, and the moving seat (1301) moves away from the casting.

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