Lever type clamp clamping device

Abstract

The utility model belongs to the field of clamps, and provides a lever type clamp clamping device which comprises a tool plate, a lever type clamp and a clamping device. The abutting assembly is arranged on the tool plate, an abutting block is movably arranged on the abutting assembly, and the abutting block movably abuts against the interior of the semi-sealed containing cavity and is used for supporting and positioning the workpiece; and the pressing assembly is arranged on the tool plate, and a rotating block capable of being switched between a releasing position and a using position is arranged on the pressing assembly. Compared with the prior art, the clamping device has the advantages that the abutting block on the abutting assembly is used for abutting against the interior of the semi-sealed containing cavity of the workpiece, and it is guaranteed that the workpiece can be accurately positioned on the supporting base; and meanwhile, the rotating block capable of being switched between the releasing position and the using position is matched, the pressing part is stably pressed on the workpiece through the lever principle, the pressing part and the abutting part are located on the same straight line, the stability and reliability during part clamping are guaranteed, and the interference problem during tool machining can be avoided.

Description

Technical Field

[0001] The utility model belongs to the field of clamps, and in particular relates to a lever-type clamping device. Background Art

[0002] In the machining industry, traditional fixtures often cannot meet the machining requirements of workpieces with special structures (such as workpieces with two bosses).

[0003] As for the existing technology, most clamping fixture devices complete the clamping and fixing of the workpiece by setting a clamp pressure plate. However, due to the particularity of the positions of the two bosses, the clamp pressure plate and the bosses will cause position interference during the clamping process, affecting the stability and reliability of the part clamping, and at the same time interfering with the normal processing operation of the tool, thereby affecting the production efficiency of the workpiece. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a lever-type clamping device.

[0005] The utility model solves the technical problem by adopting a technical solution of providing a lever-type clamping device for machining a workpiece having two bosses, wherein the two bosses are located on the same side of the end of the workpiece and the two bosses and the workpiece together form a semi-sealed cavity; the device comprises: a tooling plate on which a support seat for supporting the workpiece is disposed;

[0006] A tightening assembly is provided on the tooling plate, and a tightening block is movably provided on the tightening assembly, and the tightening block movably rests in the semi-sealed cavity to support and position the workpiece;

[0007] A clamping assembly is provided on the tooling plate, and is provided with a rotating block that can be switched between a release position and a use position. The bottom end of the rotating block is connected to the output end of the clamping assembly, and the top end of the rotating block is formed with a clamping portion that movably abuts against the side of the workpiece away from the boss;

[0008] When the rotating block is in the releasing position, the bottom end of the rotating block is close to the pressing assembly, so that the pressing portion is away from the pressing block, so that the workpiece is placed on the supporting seat;

[0009] When the output end of the clamping assembly pushes the bottom end of the clamping part away from the pressing assembly, the clamping part can be movably pressed against the side of the workpiece away from the boss when the rotating block is switched to the use position, and is in the same straight line with the pressing block, so that the tool can process the through hole in the boss.

[0010] In the above-mentioned lever-type clamping device, the clamping block includes a connecting part and a clamping part, the connecting part is used to connect the output end of the clamping assembly; the clamping part is connected to the connecting part, and when the clamping part moves against the semi-sealed cavity, it is in the same straight line as the pressing part.

[0011] In the above-mentioned lever-type clamping device, the connecting portion is L-shaped and arranged on one side of the rotating block, the pressing portion is vertically connected to the connecting portion, and the pressing portion and the connecting portion jointly form a placement cavity.

[0012] In the above-mentioned lever-type clamping device, the tightening assembly further includes:

[0013] A reference seat, arranged on the tooling plate;

[0014] An adjusting oil cylinder is installed on the reference seat, and an output end of the adjusting oil cylinder is connected to the connecting portion, so as to drive the pressing portion to move against the semi-sealed cavity;

[0015] A guide post is arranged on the connecting portion. A guide hole is opened in the reference seat. The guide post is movably inserted in the guide hole.

[0016] In the above-mentioned lever-type clamping device, the pressing assembly further includes:

[0017] A driving member, which is mounted on the reference seat and arranged parallel to the regulating cylinder, wherein the output end of the driving member is connected to the bottom end of the rotating block;

[0018] The fixing seat is arranged on the tooling plate and is spaced apart from the reference seat. A rotating shaft is arranged in the fixing seat. A connecting hole is arranged at the upper middle portion of the rotating block, and the rotating shaft passes through the connecting hole.

[0019] In the above-mentioned lever-type clamping device, a threaded hole is provided in the connecting portion, and a threaded shaft is formed at the end of the guide column, and the threaded shaft is threadedly engaged with the threaded hole.

[0020] In the above-mentioned lever-type clamping device, a limiting groove is further provided in the fixing seat, and the rotating block is rotatably arranged in the limiting groove.

[0021] In the above-mentioned lever-type clamping device, the top end of the rotating block is further provided with an assembly hole, an assembly column is detachably connected to the assembly hole, and the pressing portion is connected to the assembly column and extends out of the assembly hole.

[0022] In the above-mentioned lever-type clamping device, a through slot and a locking piece are provided in the connecting portion, and the output end of the regulating oil cylinder is movably inserted in the through slot and penetrated and locked by the locking piece.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The utility model relates to a lever-type clamping device, which utilizes a clamping block on a clamping assembly to press against the inside of a semi-sealed cavity of a workpiece, ensuring that the workpiece can be accurately positioned on a support seat; at the same time, in conjunction with a rotating block that can be switched between a release position and a use position, the clamping portion is firmly pressed against the workpiece and is aligned with the clamping portion through the lever principle. In addition to ensuring the stability and reliability of the part clamping, it can also avoid interference problems during tool processing.

[0025] (2) The placement cavity formed by the pressing portion and the connecting portion provides sufficient space for the placement of the workpiece and the pressing position of the pressing portion, ensuring that the pressing portion and the pressing portion can firmly clamp the workpiece without interfering with each other, while also reserving sufficient processing space for the tool.

[0026] (3) The guide column and the guide hole can not only play a guiding and limiting role when the connecting part drives the pressing part to move against the semi-sealed cavity, but also can realize a detachable installation method through the cooperation of the threaded shaft and the threaded hole, which provides convenience for subsequent maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of the present application;

[0028] Figure 2 1. It is a structural diagram of the tightening component;

[0029] Figure 3 This is an exploded view of the guide column, the clamping block, and the reference seat;

[0030] Figure 4 It is a structural diagram of the clamping assembly.

[0031] In the figure, 1, workpiece; 10, boss; 100, semi-sealed cavity;

[0032] 2. Tooling board;

[0033] 3. Clamping assembly; 30. Clamping block; 300. Connecting portion; 300a. Threaded hole; 300b. Through slot; 300c. Locking member; 301. Clamping portion; 302. Receiving cavity; 31. Reference seat; 310. Guide hole; 32. Adjusting cylinder; 33. Guide post; 330. Threaded shaft;

[0034] 4. Clamping assembly; 40. Rotating block; 400. Assembly hole; 401. Assembly column; 402. Clamping part; 41. Driving member; 42. Fixed seat; 420. Limiting groove; 43. Rotating shaft. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] like Figures 1 to 4 As shown, the utility model is a lever-type clamping device for processing a workpiece 1 having two bosses 10, the two bosses 10 being located on the same side of the end of the workpiece 1, and the two bosses 10 and the workpiece 1 jointly forming a semi-sealed cavity 100; comprising: a tooling plate 2, on which a support seat for supporting the workpiece 1 is arranged; a tightening assembly 3, arranged on the tooling plate 2, on which a tightening block 30 is movably provided, the tightening block 30 movably rests in the semi-sealed cavity 100 to support and position the workpiece 1; a pressing assembly 4, arranged on the tooling plate 2, on which a rotating block 40 that can be switched between a release position and a use position is provided. The bottom end of the rotating block 40 is connected to the output end of the clamping assembly 4, and the top end of the rotating block 40 is formed with a clamping portion 402 that movably presses against the side of the workpiece 1 away from the boss 10; when the rotating block 40 is in the released position, the bottom end of the rotating block 40 is close to the clamping assembly 3, so that the clamping portion 402 is away from the clamping block 30, so that the workpiece 1 can be placed on the support seat; when the output end of the clamping assembly 4 pushes the bottom end of the clamping portion 402 away from the clamping assembly 3, the clamping portion 402 can be movably pressed against the side of the workpiece 1 away from the boss 10 when the rotating block 40 is switched to the use position, and is in the same straight line with the clamping block 30, so that the tool can process the through hole in the boss 10.

[0037] This solution is mainly to achieve the clamping of parts before tool processing, specifically, Figures 1 to 4As shown, when the workpiece 1 is placed on the support seat (not shown in the figure), the clamping assembly 3 can drive the clamping block 30 to extend into the semi-sealed cavity 100 of the workpiece 1 to support and preliminarily position the workpiece 1. It is worth noting that the semi-sealed cavity 100 is surrounded by the upper and lower bosses 10 and the workpiece 1 itself, and the bosses 10 and the semi-sealed cavity 100 are both located at the ends of the length direction of the workpiece 1, which effectively prevents the workpiece 1 from sliding relative to the support seat and does not interfere with the subsequent tool processing of the boss 10; at the same time, the rotating block 40 is at In the release position, the clamping portion 402 formed at the top of the rotating block 40 is away from the pressing block 30, ensuring the smoothness of the placement of the workpiece 1; as the output end of the clamping assembly 4 pushes the bottom end of the rotating block 40, the rotating block 40 switches from the release position to the use position along the set trajectory, and when the rotating block 40 is fully moved into position, the clamping portion 402 is completely pressed against the side of the workpiece 1 away from the boss 10. At this time, the clamping portion 402 and the pressing block 30 are in the same straight line, and the workpiece 1 is firmly fixed on the clamping device, ensuring that the workpiece 1 will not be displaced during the processing. It can be seen that the design of the lever-type clamp can ensure that the workpiece 1 is stable and motionless during the processing, thereby improving the processing accuracy and reducing the dimensional error caused by the movement of the workpiece 1. At the same time, the clamping method in which the clamping portion 402 and the pressing portion 301 are in the same straight line effectively avoids interference between the tool and the clamping fixture during processing.

[0038] The pressing block 30 includes a connecting portion 300 and a pressing portion 301. The connecting portion 300 is used to connect to the output end of the pressing assembly 3. The pressing portion 301 is connected to the connecting portion 300 and is in the same straight line as the pressing portion 402 when the pressing portion 301 moves against the semi-sealed cavity 100.

[0039] like Figures 1 to 2 As shown, the clamping block 30 in this embodiment consists of two parts: a connecting part 300 and a clamping part 301. When the output end of the clamping component 3 pushes the connecting part 300 to move horizontally to one side of the workpiece 1, the clamping part 301 located at the end of the connecting part 300 can accurately rest against the semi-sealed cavity 100, thereby achieving the effect of supporting and pre-positioning the workpiece 1. As the pressing part 402 is pressed against the side of the workpiece 1 away from the boss 10, it is ensured that the clamping part 301 and the pressing part 402 are in the same straight line with the support point and the pressing point of the workpiece 1, thereby ensuring that the subsequent tool can perform processing operations normally.

[0040] Preferably, if Figure 2As shown, the connecting portion 300 in this embodiment is L-shaped and arranged on one side of the rotating block 40, and the pressing portion 301 is vertically connected to the connecting portion 300 to form multiple turning points on the pressing block 30. This design allows the connecting portion 300 to not interfere with the position of the workpiece 1 during any movement on one side of the workpiece 1, and at the same time, it can be firmly pressed against the semi-sealed cavity 100 through the pressing portion 301 to play a supporting and pre-positioning effect. For this reason, when the pressing portion 301 and the pressing portion 402 are in the same straight line, it will not affect the tool's processing of the workpiece 1. In addition, the pressing portion 301 and the connecting portion 300 jointly form a placement cavity 302, the side opening of the placement cavity 302 faces the pressing portion 402, and then when the pressing portion 301 is pressed against the semi-sealed cavity 100, the placement cavity 302 provides sufficient space for the installation and placement of the workpiece 1 and the pressing assembly 4, ensuring that the two do not interfere with each other and can respectively achieve the support and pressing effects of the workpiece 1.

[0041] The tightening assembly 3 also includes: a reference seat 31, which is arranged on the tooling plate 2; an adjusting cylinder 32, which is installed on the reference seat 31, and the output end of the adjusting cylinder 32 is connected to the connecting part 300, so as to drive the tightening part 301 to move against the semi-sealed cavity 100; a guide column 33, which is arranged on the connecting part 300, and a guide hole 310 is opened in the reference seat 31, and the guide column 33 is movably inserted into the guide hole 310.

[0042] Further, if Figures 2 to 3 As shown, when the workpiece 1 to be processed is placed on the support seat, the oil cylinder 32 can be adjusted to drive the connecting part 300 along the Figure 2 As the fixture moves to the right, the guide post 33 provided on the connecting portion 300, which is movably inserted into the guide hole 310 of the base 31, allows the connecting portion 300 to maintain linear motion during movement, thereby ensuring that the abutting portion 301 is firmly abutted within the semi-sealed cavity 100. This ensures precise positioning of the workpiece 1 and improves machining accuracy. Furthermore, by adjusting the stroke of the oil cylinder 32, this structure can accommodate workpieces 1 of varying sizes and shapes, expanding the fixture's range of applications.

[0043] Preferably, if Figure 3 As shown, this embodiment further provides a threaded hole 300a in the connecting portion 300, and a threaded shaft 330 is formed at the end of the guide column 33. By threadedly fitting the threaded shaft 330 with the threaded hole 300a, quick installation and disassembly between the guide column 33 and the connecting portion 300 is achieved, and convenience is also provided for subsequent maintenance and replacement.

[0044] Preferably, the connecting portion 300 of this embodiment is provided with a through slot 300b and a locking member 300c. When the output end of the adjusting oil cylinder 32 extends into the through slot 300b, the locking member 300c can be used to penetrate the output end and the through slot 300b to fasten the output end to the connecting portion 300. This operation is relatively simple, providing convenience for installation and removal, and ensuring that there is no relative displacement between the two when the output end drives the connecting portion 300 to move. It should be noted that the locking member 300c of this embodiment can be replaced by a screw, a screw, or other connecting portion 300 components.

[0045] The clamping assembly 4 also includes: a driving member 41, which is installed on the reference seat 31 and is arranged parallel to the adjusting cylinder 32, and the output end of the driving member 41 is connected to the bottom end of the rotating block 40; a fixed seat 42, which is arranged on the tooling plate 2 and is spaced apart from the reference seat 31, and a rotating shaft 43 is arranged in the fixed seat 42, and a connecting hole is provided at the upper middle position of the rotating block 40, and the rotating shaft 43 passes through the connecting hole.

[0046] like Figure 1 、 Figure 2 and Figure 4 As shown, it is worth noting that the driving member 41 and the adjusting oil cylinder 32 in this embodiment share the same reference base 31, which not only saves space but also makes the entire fixture structure more compact and suitable for use in a limited space; in addition, during the placement of the workpiece 1, the output end of the driving member 41 can pull the bottom end of the rotating block 40 to move outward from the fixed seat 42, thereby making the pressing portion 402 at the top of the rotating block 40 away from the pressing portion 301 (i.e., in the released position), so as to facilitate the smooth placement of the workpiece 1; after the workpiece 1 is placed and pressed by the pressing portion 301, the workpiece 1 can be placed. When the part 301 is pressed against the semi-sealed cavity 100, the output end of the driving member 41 can push the bottom end of the rotating block 40 to move toward the inside of the fixed seat 42. As the rotating block 40 rotates relative to the fixed seat 42 by relying on the rotating shaft 43, the clamping part 402 at the top of the rotating block 40 is movable and pressed against the side of the workpiece 1 away from the boss 10 (that is, in the use position). At this time, the clamping part 402 and the pressing block 30 are in the same straight line, and the workpiece 1 is firmly fixed on the fixture to ensure that the workpiece 1 will not be displaced during the processing.

[0047] Preferably, a limiting groove 420 is further provided in the fixed seat 42 in this embodiment, and the rotating block 40 is rotatably set in the limiting groove 420 (i.e., the above-mentioned set trajectory), thereby guiding and limiting the rotating block 40 when it rotates, thereby avoiding shaking or deviation of the rotating block 40 when it rotates, thereby affecting the accuracy and stability of the clamping part 402 when pressing the workpiece 1.

[0048] The top of the rotating block 40 is further provided with an assembly hole 400 , in which an assembly post 401 is detachably connected. The pressing portion 402 is connected to the assembly post 401 and extends out of the assembly hole 400 .

[0049] like Figure 4 As shown, in this embodiment, the assembly column 401 and the assembly hole 400 can also be quickly installed and disassembled by means of threaded cooperation, so that the structure can replace assembly columns 401 of different specifications according to different processing requirements, and then adjust the position and shape of the clamping part 402 to adapt to workpieces 1 of different shapes or sizes; as the rotating block 40 rotates, the assembly column 401 in the top assembly hole 400 can drive the clamping part 402 to move toward the side of the workpiece 1 away from the boss 10 until the clamping part 402 is completely pressed against the workpiece 1, ensuring the stability of the workpiece 1 during the tool processing process.

[0050] It should be noted that the driving member 41 in this embodiment can be replaced by other driving devices such as hydraulic drive, cylinder drive, etc.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0054] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A lever-type clamping device for machining a workpiece having two bosses, wherein the two bosses are located on the same side of the end of the workpiece and the two bosses and the workpiece together form a semi-sealed cavity; characterized in that: include: A tooling plate, on which a support seat for supporting a workpiece is arranged; A tightening assembly is provided on the tooling plate, and a tightening block is movably provided on the tightening assembly, and the tightening block movably rests in the semi-sealed cavity to support and position the workpiece; A clamping assembly is provided on the tooling plate, and is provided with a rotating block that can be switched between a release position and a use position. The bottom end of the rotating block is connected to the output end of the clamping assembly, and the top end of the rotating block is formed with a clamping portion that movably abuts against the side of the workpiece away from the boss; When the rotating block is in the releasing position, the bottom end of the rotating block is close to the pressing assembly, so that the pressing portion is away from the pressing block, so that the workpiece is placed on the supporting seat; When the output end of the clamping assembly pushes the bottom end of the clamping part away from the pressing assembly, the clamping part can be movably pressed against the side of the workpiece away from the boss when the rotating block is switched to the use position, and is in the same straight line with the pressing block, so that the tool can process the through hole in the boss.

2. A lever-type clamping device according to claim 1, characterized in that: The pressing block includes a connecting portion and a pressing portion, wherein the connecting portion is used to connect to the output end of the pressing assembly; the pressing portion is connected to the connecting portion and is in the same straight line as the pressing portion when the pressing portion is movably pressed against the semi-sealed cavity.

3. A lever-type clamping device according to claim 2, characterized in that: The connecting portion is L-shaped and arranged on one side of the rotating block. The pressing portion is vertically connected to the connecting portion, and the pressing portion and the connecting portion jointly form a placement cavity.

4. A lever-type clamping device according to claim 2, characterized in that: The abutting assembly further comprises: A reference seat, arranged on the tooling plate; An adjusting oil cylinder is installed on the reference seat, and an output end of the adjusting oil cylinder is connected to the connecting portion, so as to drive the pressing portion to move against the semi-sealed cavity; A guide post is arranged on the connecting portion. A guide hole is opened in the reference seat. The guide post is movably inserted in the guide hole.

5. The lever-type clamping device according to claim 4, characterized in that: The compression assembly further comprises: A driving member, which is mounted on the reference seat and arranged parallel to the regulating cylinder, wherein the output end of the driving member is connected to the bottom end of the rotating block; The fixing seat is arranged on the tooling plate and is spaced apart from the reference seat. A rotating shaft is arranged in the fixing seat. A connecting hole is arranged at the upper middle portion of the rotating block, and the rotating shaft passes through the connecting hole.

6. The lever-type clamping device according to claim 4, characterized in that: A threaded hole is provided in the connecting portion, and a threaded shaft is formed at the end of the guide column, and the threaded shaft is threadedly matched with the threaded hole.

7. The lever-type clamping device according to claim 5, characterized in that: A limiting groove is further provided in the fixing seat, and the rotating block is rotatably arranged in the limiting groove.

8. The lever-type clamping device according to claim 5, characterized in that: The top of the rotating block is further provided with an assembly hole, in which an assembly column is detachably connected, and the pressing portion is connected to the assembly column and extends out of the assembly hole.

9. The lever-type clamping device according to claim 4, characterized in that: A through slot and a locking piece are provided in the connecting portion, and the locking piece is used to pass through the connecting portion and the output end of the regulating oil cylinder.

Images