Rotary clamping tool

Abstract

The utility model relates to the field of clamping tools, aims to solve the problem that the workpiece processing efficiency is reduced due to the cleaning of scraps and the like on the existing clamping tool, and provides a rotary clamping tool which comprises a rotary base, a supporting column and a clamping piece, the rotary base is provided with a plurality of first sliding rails and a plurality of second sliding rails, the number of the first sliding rails is at least three, and the number of the second sliding rails is at least three; each first sliding rail is in sliding connection with one supporting column, the top wall of each supporting column is used for abutting against the bottom wall of a to-be-clamped piece, and the top wall of each supporting column is completely covered with the bottom wall of the to-be-clamped piece; each second sliding rail is in sliding connection with one clamping piece, the clamping faces of the clamping pieces are higher than the top wall of the supporting column, and the multiple clamping pieces are evenly distributed around the rotating center of the rotating base. After a workpiece is supported by the supporting column, the workpiece is erected to be separated from the upper surface of the rotating base, and even if chippings and the like left by cutting or polishing the workpiece fall on the rotating base, the levelness or position stability of the workpiece during placement cannot be influenced.

Description

Technical Field

[0001] The utility model relates to the field of clamping tools, and more specifically, to a rotary clamping tool. Background Art

[0002] During the workpiece processing, it is often necessary to use a clamping tool to fix the workpiece, such as cutting, grinding and forging of the workpiece. At present, there is a lathe-grinder integrated machine tool that can both cut and grind the workpiece. When this machine tool is in use, the workpiece is generally placed horizontally and fixed on a rotating table. When performing cutting operations, the cutting device on the machine tool is fixed, and the tool abuts against the workpiece, and the rotation of the rotating table can drive the workpiece to rotate for cutting operations. When the machine tool is performing grinding operations, the grinding wheel and the rotating table can rotate in opposite directions at the same time. However, in such machine tools, since the workpiece is placed horizontally, debris will be left on the rotating table after cutting or grinding. If the workpiece directly contacts the tabletop of the rotating table, the debris left by the processing of the previous workpiece needs to be cleaned before clamping the workpiece to ensure the horizontality and position stability of the workpiece during clamping. Repeated cleaning operations greatly reduce the efficiency of workpiece processing. Now there is an urgent need for a clamping tool that does not require cleaning after each processing. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a rotary clamping tool to solve the problem that the cleaning of debris on the existing clamping tool reduces the workpiece processing efficiency.

[0004] The embodiments of the utility model are realized by the following technical solutions:

[0005] A rotary clamping tool includes: a rotary base, a support column and a clamping member. A plurality of first slide rails and a plurality of second slide rails are provided on the rotary base. The first slide rails and the second slide rails both extend towards the rotation center of the rotary base, and there are at least three first slide rails; each first slide rail is slidably connected to a support column, and the top wall of the support column is used to abut against the bottom wall of the workpiece to be clamped, and the bottom wall of the workpiece to be clamped completely covers the top wall of the support column; each second slide rail is slidably connected to a clamping member, and the clamping surface of the clamping member is higher than the top wall of the support column, and a plurality of clamping members are evenly arranged around the rotation center of the rotary base.

[0006] Preferably, the inner walls on both sides of the first slide rail are provided with a first elastic layer, the first elastic layer is in a compressed state, and the support column is located between the two first elastic layers on both sides.

[0007] Preferably, the support column is provided with two opposite first vertical edges, and a first sealing line is formed after the two first elastic layers on both sides abut against each other, and the first vertical edge and the first sealing line are in the same plane.

[0008] Preferably, second elastic layers are provided on the inner walls on both sides of the second slide rail. The second elastic layers are in a compressed state. The second slide rail is further provided with a connecting rod which is located between the second elastic layers on both sides and is slidably connected to the second slide rail. The top wall of the connecting rod is connected to the clamping member.

[0009] Preferably, the connecting rod is provided with two opposite second vertical edges. After the second elastic layers on both sides abut against each other, a second sealing line is formed. The second vertical edge and the second sealing line are located on the same plane.

[0010] Preferably, the rotary clamping tooling further includes: an arc-shaped cleaning member. The end of the arc-shaped cleaning member is connected to the side wall of the connecting rod. The cleaning surface on the lower side of the arc-shaped cleaning member abuts against the upper surface of the second elastic layer. The second vertical edge near the edge side of the rotary base is located within the enclosed area of the arc-shaped cleaning member.

[0011] Preferably, the intersection line of the surface of the arc-shaped cleaning member away from the connecting rod and the surface of the second elastic layer away from the second sealing line is closer to the edge of the rotary base than the second vertical edge near the edge side of the rotary base.

[0012] Preferably, the support column is a telescopic rod. During the telescopic process of the support column, at least one state satisfies that the top wall of the support column is higher than the top wall of the clamping member.

[0013] Preferably, the clamping surfaces of the clamping member for abutting against the inner wall or the outer wall of the workpiece to be processed are both arc surfaces.

[0014] Preferably, there are four clamping members which are evenly arranged around the rotation center of the rotary base. The clamping member is provided with a threaded hole and a guiding hole. The second slide rail is provided with a threaded rod which is matched with the threaded hole, and the second slide rail is provided with a guiding rod which is matched with the guiding hole. One end of the threaded rod is connected to a bevel gear, and the adjacent bevel gears are in transmission connection. The other end of any one of the threaded rods is connected to a driving mechanism.

[0015] The utility model has at least the following beneficial effects:

[0016] After the workpiece is supported by the support column provided by the utility model, the workpiece is lifted off the upper surface of the rotary base. Even if the debris left by cutting or grinding the workpiece falls on the rotary base, it will not affect the level or position stability when the workpiece is placed; the bottom wall of the clamping member completely covers the top wall of the support column, so that the top wall of the support column can be kept clean; the support column and the clamping member slide on the slide rail, which can be applicable to workpieces of different specifications. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural schematic diagram of a rotary clamping tooling;

[0019] Figure 2 It is a connection schematic diagram of a support column;

[0020] Figure 3 It is a connection schematic diagram of a connecting rod;

[0021] Figure 4 It is a schematic diagram of the first clamping state;

[0022] Figure 5 It is a schematic diagram of the second clamping state;

[0023] Figure 6 It is a structural schematic diagram of an arc-shaped cleaning member;

[0024] Figure 7 It is a top view of the arc-shaped cleaning member;

[0025] Figure 8 It is a schematic diagram of the driving structure of the clamping member;

[0026] Figure 9 It is a linkage schematic diagram of a threaded rod;

[0027] Icon: 1 - Rotary base, 11 - First slide rail, 111 - First elastic layer, 1111 - First sealing line, 12 - Second slide rail, 121 - Second elastic layer, 1211 - Second sealing line, 122 - Connecting rod, 1221 - Second vertical rib, 2 - Support column, 21 - First vertical rib, 3 - Clamping member, 4 - Arc-shaped cleaning member, 5 - Threaded rod, 6 - Guide rod, 7 - Driving mechanism, 8 - Bevel gear, 9 - Workpiece. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Embodiment 1: As Figure 1As shown in the figure, a rotary clamping tooling includes: a rotary base 1, a support column 2 and a clamping member 3. A plurality of first slide rails 11 and a plurality of second slide rails 12 are provided on the rotary base 1. Both the first slide rails 11 and the second slide rails 12 extend towards the rotation center of the rotary base 1, and there are at least three first slide rails 11. Each first slide rail 11 is slidably connected to a support column 2. The top wall of the support column 2 is used to abut against the bottom wall of the workpiece to be clamped 3, and the bottom wall of the workpiece to be clamped 3 completely covers the top wall of the support column 2. Each second slide rail 12 is slidably connected to a clamping member 3. The clamping surface of the clamping member 3 is higher than the top wall of the support column 2, and a plurality of clamping members 3 are evenly arranged around the rotation center of the rotary base 1.

[0030] In the specific implementation process, the rotary base 1 can be driven to rotate by a rotary motor, and the rotary base 1 can be set as circular as Figure 1 shown. The sliding connection structure of the slide rail is a prior art, and generally realizes sliding through the cooperation of the slide rail and the slider, which will not be elaborated here. By sliding to change the position of the support column 2, the support column 2 can be adapted to workpieces 9 of different specifications. At least three support columns 2 can ensure the stability of the placement of the workpiece 9, and 4 support columns 2 can be set as Figure 1 shown. 4 clamping members 3 can also be set as Figure 1 shown. By sliding the clamping member 3 on the second slide rail 12, the clamping and releasing of the workpiece 9 can be realized. The size of the top wall of the support column 2 can be set according to the workpiece 9 to ensure that the workpiece 9 can completely cover the top wall of the support column 2, avoiding debris and the like falling on the support column 2 during the processing of the workpiece 9 and affecting the placement of the next workpiece 9. The uniform arrangement of the clamping members 3 around the rotation center can make the distribution of the clamping force more uniform.

[0031] During use, first adjust the position of the support column 2 according to the size of the workpiece 9, then place the workpiece 9 on the support column 2, and finally move the clamping member 3 to clamp the workpiece 9. A fixed cleaning time can be set, and the debris and cutting residues on the upper surface of the rotary base 1 are centrally cleaned every once in a while.

[0032] Embodiment 2: In order to prevent debris and the like from entering the first slide rail 11, an improvement is made on the basis of Embodiment 1. As Figure 2 shown, in this embodiment, first elastic layers 111 are provided on the inner walls on both sides of the first slide rail 11. The first elastic layers 111 are in a compressed state, and the support column 2 is located between the first elastic layers 111 on both sides.

[0033] In the specific implementation process, the first elastic layer 111 can be made of silica gel or rubber material. After the support column 2 leaves a certain position, the first elastic layer 111 here rebounds. As Figure 2 shown, after the first elastic layers 111 on both sides of the first slide rail 11 rebound, they are sealed to prevent debris from entering the first slide rail 11 and affecting the movement of the support column 2.

[0034] Example 3: In order to reduce the resistance during the movement of the support column 2, improvements are made on the basis of Example 2. As Figure 2 shown, in this embodiment, the support column 2 is provided with two opposite first vertical edges 21, and after the two sides of the first elastic layer 111 are abutted, a first sealing line 1111 is formed, and the first vertical edge 21 and the first sealing line 1111 are located on the same plane.

[0035] During the specific implementation process, the support column 2 can be set as a multi-prism as Figure 2 shown, and it is easier to separate the first elastic layers 111 on both sides through the first vertical edges 21.

[0036] Example 4: In order to prevent debris and the like from entering the second slide rail 12, improvements are made on the basis of Example 1. As Figure 3 shown, in this embodiment, the inner walls on both sides of the second slide rail 12 are provided with second elastic layers 121, the second elastic layers 121 are in a compressed state, the second slide rail 12 is further provided with a connecting rod 122, the connecting rod 122 is located between the two second elastic layers 121 and is slidably connected to the second slide rail 12, and the top wall of the connecting rod 122 is connected to the clamping member 3.

[0037] During the specific implementation process, the second elastic layer 121 can be made of silicone or rubber material. After the connecting rod 122 leaves a certain position, the second elastic layer 121 at this place rebounds. As Figure 3 shown, after the second elastic layers 121 on both sides of the second slide rail 12 rebound, they are sealed to prevent debris from entering the second slide rail 12 and affecting the movement of the connecting rod 122. The width of the clamping member 3 is generally greater than that of the second slide rail 12, so in this embodiment, the clamping member 3 is slidably connected to the second slide rail 12 through the connecting rod 122.

[0038] Example 5: In order to reduce the resistance during the movement of the connecting rod 122, improvements are made on the basis of Example 4. As Figure 3 shown, in this embodiment, the connecting rod 122 is provided with two opposite second vertical edges 1221, and after the two sides of the second elastic layer 121 are abutted, a second sealing line 1211 is formed, and the second vertical edge 1221 and the second sealing line 1211 are located on the same plane.

[0039] During the specific implementation process, the connecting column can be set as a multi-prism as Figure 2 shown, and it is easier to separate the second elastic layers 121 on both sides through the second vertical edges 1221.

[0040] Example 6: In order to prevent the debris on the second elastic layer 121 from entering the second slide rail 12 during the movement of the clamping member 3, improvements are made on the basis of Example 5. As Figure 6As shown in the figure, in this embodiment, the rotary clamping tooling further includes: an arc-shaped cleaning member 4, the end of the arc-shaped cleaning member 4 is connected to the side wall of the connecting rod 122, the cleaning surface on the lower side of the arc-shaped cleaning member 4 abuts against the upper surface of the second elastic layer 121, and the second vertical edge 1221 near the edge side of the rotary base 1 is located within the enclosed area of the arc-shaped cleaning member 4.

[0041] During the specific implementation process, bristles, sponge blocks, cleaning cloths, etc. can be provided on the bottom wall of the arc-shaped cleaning member 4. The enclosed area means that as Figure 6 shown, the second vertical edge 1221 is surrounded by the arc-shaped cleaning member 4. After the workpiece 9 is processed, the clamping member 3 moves away from the rotation center of the rotary base 1. During the moving-away process, the arc-shaped cleaning member 4 will push the debris on the second elastic layer 121 to the edge of the rotary base 1, avoiding the debris on the second elastic layer 121 from falling into the second slide rail 12 during the process of the clamping member 3 returning to clamp again. The support column 2 can also be provided with the arc-shaped cleaning member 4.

[0042] Embodiment 7: In order to further prevent the debris on the second elastic layer 121 from falling into the second slide rail 12, an improvement is made on the basis of Embodiment 6. As Figure 7 shown, in this embodiment, the intersection line of the surface of the arc-shaped cleaning member 4 away from the connecting rod 122 and the surface of the second elastic layer 121 away from the second sealing line 1211 is closer to the edge of the rotary base 1 than the second vertical edge 1221 near the edge side of the rotary base 1.

[0043] During the specific implementation process, in order to enable the arc-shaped cleaning member 4 to completely push the debris away from the second sealing line 1211. As Figure 7 shown, when the connecting rod 122 reaches the end of the second sealing line 1211, Figure 7 the black dot in the figure is located to the left of the second vertical edge 1221, so that the debris can be completely away from the second sealing line 1211.

[0044] Embodiment 8: In order to make the clamping tooling applicable to more working requirements, an improvement is made on the basis of Embodiments 1-7. In this embodiment, the support column 2 is a telescopic rod, and during the telescopic process of the support column 2, at least one state satisfies that the top wall of the support column 2 is higher than the top wall of the clamping member 3.

[0045] During the specific implementation process, taking a bearing as an example, when the grinding device needs to grind the entire outer ring wall of the bearing, if the clamping member 3 Figure 4 abuts against the outer ring wall as shown in the figure, it will affect the grinding process of the outer ring wall and increase the grinding time. For example, the clamping member 3 only abuts against the lower part of the outer ring wall of the bearing, first grinds the upper half of the outer ring wall, then flips the bearing and clamps it, and then grinds the lower half. In this embodiment, the support column 2 is set as a telescopic rod, and an electric telescopic rod can be used. After lifting the workpiece 9, move the clamping member 3 so that the clamping member 3 can be asFigure 5 The inner ring wall of the clamping bearing shown, thus completely exposing the outer ring wall and simplifying the grinding process.

[0046] Embodiment 9: In order to increase the clamping stability of the clamping member 3, improvements are made on the basis of Embodiment 8, such as Figure 4-5 shown, in this embodiment, the clamping surfaces of the clamping member 3 for abutting against the inner wall or the outer wall of the workpiece 9 to be processed are both arc surfaces.

[0047] In the specific implementation process, the arc surface can increase the contact area between the clamping member 3 and the workpiece 9, thereby increasing the clamping stability.

[0048] Embodiment 10: In order to simply realize the synchronous movement of the clamping member 3, improvements are made on the basis of Embodiment 8, such as Figure 8-9 shown, in this embodiment, there are four clamping members 3, and the four clamping members 3 are evenly arranged around the rotation center of the rotating base 1. The clamping member 3 is provided with a threaded hole and a guide hole. The second slide rail 12 is provided with a threaded rod 5 that cooperates with the threaded hole, and the second slide rail 12 is provided with a guide rod 6 that cooperates with the guide hole. One end of the threaded rod 5 is connected to a bevel gear 8, and the adjacent bevel gears 8 are in transmission connection. The other end of any threaded rod 5 is connected to a driving mechanism 7.

[0049] In the specific implementation process, the driving mechanism 7 can adopt a rotating motor. For a circular workpiece 9, such as a bearing, the synchronous movement of the clamping members 3 can realize the clamping of the workpiece 9 without individually driving each clamping member 3. In this embodiment, through the transmission connection of the bevel gears 8, one driving mechanism 7 can drive multiple clamping members 3. When the output shaft of the driving mechanism 7 rotates, it drives the threaded rod 5 to rotate, causing the clamping member 3 to move along the guide rod 6.

[0050] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary clamping tool, characterized in that: include: A rotating base, wherein a plurality of first slide rails and a plurality of second slide rails are provided on the rotating base, wherein the first slide rails and the second slide rails both extend toward the rotation center of the rotating base, and there are at least three first slide rails; A support column, each first slide rail is slidably connected to a support column, the top wall of the support column is used to abut against the bottom wall of the part to be clamped, and the bottom wall of the part to be clamped completely covers the top wall of the support column; A clamping member, each second slide rail is slidably connected to a clamping member, a clamping surface of the clamping member is higher than the top wall of the support column, and a plurality of clamping members are evenly arranged around the rotation center of the rotating base.

2. The rotary clamping tool according to claim 1, characterized in that: The inner walls on both sides of the first slide rail are provided with first elastic layers, the first elastic layers are in a compressed state, and the support column is located between the first elastic layers on both sides.

3. The rotary clamping tool according to claim 2, characterized in that: The support column is provided with two opposite first vertical edges, and the first elastic layers on both sides are abutted to form a first sealing line, and the first vertical edge and the first sealing line are located on the same plane.

4. The rotary clamping tool according to claim 1, characterized in that: The inner walls on both sides of the second slide rail are provided with a second elastic layer, and the second elastic layer is in a compressed state. The second slide rail is also provided with a connecting rod, which is located between the second elastic layers on both sides and is slidably connected to the second slide rail. The top wall of the connecting rod is connected to the clamping member.

5. The rotary clamping fixture according to claim 4, characterized in that: The connecting rod is provided with two opposite second vertical edges, and the second elastic layers on both sides are abutted to form a second sealing line, and the second vertical edge and the second sealing line are located on the same plane.

6. The rotary clamping fixture according to claim 5, characterized in that: The rotary clamping fixture also includes: An arc-shaped cleaning member, the end of which is connected to the side wall of the connecting rod, the cleaning surface on the lower side of the arc-shaped cleaning member abuts against the upper surface of the second elastic layer, and the second vertical edge close to the edge of the rotating base is located in the enclosed area of ​​the arc-shaped cleaning member.

7. The rotary clamping fixture according to claim 6, characterized in that: The intersection line between a side of the arc-shaped cleaning member away from the connecting rod and a side of the second elastic layer away from the second sealing line is closer to the edge of the rotating base than the second vertical edge close to the edge of the rotating base.

8. The rotary clamping tool according to any one of claims 1 to 7, characterized in that: The support column is a telescopic rod. During the telescopic process, the support column has at least one state in which the top wall of the support column is higher than the top wall of the clamping member.

9. The rotary clamping fixture according to claim 8, characterized in that: The clamping surfaces of the clamping member used for abutting against the inner wall or the outer wall of the workpiece to be processed are all arc surfaces.

10. The rotary clamping fixture according to claim 8, characterized in that: There are four clamping members, which are evenly arranged around the rotation center of the rotating base. The clamping members are provided with threaded holes and guide holes. The second slide rail is provided with a threaded rod that cooperates with the threaded hole. The second slide rail is provided with a guide rod that cooperates with the guide hole. One end of the threaded rod is connected to the bevel gear, and adjacent bevel gears are transmission-connected. The other end of any threaded rod is connected to the driving mechanism.

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