A clamping device and a boring machine

Abstract

The application discloses a clamping device and a boring machine, which are provided with a first inclined supporting surface and a second inclined supporting surface which are mutually angled and support the outer circumferential surface of a workpiece, thereby supporting the workpiece from the bottom and preventing the workpiece from rolling to the two sides, reducing the number of limiting pieces and eliminating the need for limiting piece adjustment. The main technical scheme of the application is as follows: a clamping device comprises a supporting main body, a bottom supporting piece connected to the supporting main body, the bottom supporting piece comprising a first inclined supporting surface and a second inclined supporting surface, the first inclined supporting surface and the second inclined supporting surface being mutually angled, and the first inclined supporting surface and the second inclined supporting surface being used for abutting against the outer circumferential surface of a workpiece; and a pressing piece connected with the supporting main body and used for pressing the workpiece on the supporting main body. The application is used for clamping a workpiece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamps, in particular to a clamping device and a boring machine. BACKGROUND

[0002] When a boring machine is used to process a hole on a flat workpiece, the workpiece needs to be fixed vertically on the operation table of the boring machine for vertical processing of the workpiece.

[0003] The fixing of the workpiece includes pressing and fixing at both end faces and fixing at the bottom end and both sides of the vertical face on the outer periphery. In the prior art, multiple limiting pieces are often used to cooperate to fix the vertical face, such as multiple limiting blocks corresponding to the bottom end and both sides of the outer periphery of the workpiece to support the workpiece at the bottom end and limit the workpiece at both sides, or a limiting piece corresponding to the bottom end of the workpiece to support the workpiece, and a movable adjusting extrusion device is additionally provided to extrude the workpiece from the outer periphery relative to both sides to fix the workpiece. This results in a large number of limiting pieces, and if the limiting pieces are fixed, they are not universal for multiple specifications of workpieces, and if a movable adjusting extrusion device is used, the extrusion device needs to be manually adjusted when the workpiece is fixed, which is complicated. SUMMARY

[0004] Therefore, the present application provides a clamping device and a boring machine, which mainly support the outer periphery of the workpiece by setting the first inclined support surface and the second inclined support surface at an angle, which supports the workpiece from the bottom and prevents the workpiece from rolling to both sides, reduces the number of limiting pieces, and eliminates the need for limiting piece adjustment.

[0005] To achieve the above-mentioned purposes, the present application mainly provides the following technical solutions:

[0006] On the one hand, the present application provides a clamping device, comprising:

[0007] a support body;

[0008] a bottom support piece connected to the support body, the bottom support piece comprising a first inclined support surface and a second inclined support surface, the first inclined support surface and the second inclined support surface being at an angle to each other, the first inclined support surface and the second inclined support surface being used to abut the outer periphery of the workpiece;

[0009] a pressing piece connected to the support body, the pressing piece being used to press the workpiece against the support body.

[0010] Among them, the support body comprises a support back plate, a bottom plate and a reinforcing rib;

[0011] The bottom plate is used for being connected to the operation table of the boring machine, the supporting back plate is vertically connected with the bottom plate, the bottom supporting part and the pressing part are respectively connected with the supporting back plate, the reinforcing ribs are located on the side of the supporting back plate which is opposite to the bottom supporting part, and the reinforcing ribs are respectively connected with the supporting back plate and the bottom plate.

[0012] The bottom supporting part further comprises a horizontal supporting surface connected with the first inclined supporting surface and the second inclined supporting surface respectively.

[0013] The distance between the first inclined supporting surface and the second inclined supporting surface gradually increases in the direction away from the horizontal supporting surface.

[0014] The bottom supporting part (200) comprises a first sub-supporting part (240), a second sub-supporting part (250) and a third sub-supporting part (260), the first inclined supporting surface (210) is arranged on the first sub-supporting part (240), the horizontal supporting surface (230) is arranged on the second sub-supporting part (250), and the second inclined supporting surface (220) is arranged on the third sub-supporting part (260).

[0015] The first sub-supporting part (240), the second sub-supporting part (250) and the third sub-supporting part (260) are used for being respectively connected to the supporting main body (100), so that the first inclined supporting surface (210), the second inclined supporting surface (220) and the horizontal supporting surface (230) cooperate to abut against the outer circumferential surface of the workpiece (10).

[0016] The pressing part comprises a first pad, a pressing plate, a penetrating rod and a locking part, the first pad is connected with the supporting main body, the penetrating rod penetrates through the pressing plate and the supporting main body, one end of the pressing plate is used for abutting against the first pad, the other end of the pressing plate is used for abutting against the workpiece, the locking part is connected with the penetrating rod and is used for moving relative to the penetrating rod and interacting with the supporting main body, and the distance between the pressing plate and the supporting main body is adjusted through the penetrating rod.

[0017] The pressing part comprises two pressing parts, the two pressing parts are arranged at intervals, and the penetrating rods of the two pressing parts are located between the two first pads.

[0018] The first pad comprises a plurality of sub-pads, and the plurality of sub-pads are arranged in layers.

[0019] The clamping device further comprises at least one second pad, the second pad is detachably connected with the supporting main body, and the second pad is used for abutting against the end surface of the workpiece to clamp the workpiece in cooperation with the pressing part.

[0020] The clamping device further comprises a second pad screw, a counterbore is arranged on the second pad, a connecting screw hole is arranged on the supporting main body, the second pad screw penetrates through the counterbore and is screwed on the connecting screw hole, so that the second pad is detachably connected with the supporting main body.

[0021] In another aspect, the present application provides a boring machine comprising the clamping device of any one of the above, and a boring machine body, the boring machine body comprising an operation table, and a fixing member arranged on the operation table, the fixing member being used to connect with the support body to fix the support body on the operation table.

[0022] The clamping device and the boring machine provided by the present application mainly support the outer circumferential surface of the workpiece through the first inclined support surface and the second inclined support surface which are mutually angled, thereby achieving the bottom support of the workpiece while hindering the rolling of the workpiece to the two sides, reducing the number of limiting members, and eliminating the need for limiting member adjustment. In the prior art, multiple limiting members are usually arranged to cooperate to fix the workpiece in the vertical plane, resulting in a large number of limiting members. Multiple limiting blocks are arranged to correspond to the bottom end and the two sides of the outer circumferential surface of the workpiece. If the limiting members are fixed, they are not universal for multiple specifications of workpieces. Alternatively, one limiting member is arranged to correspond to the bottom end of the outer circumferential surface of the workpiece to play a supporting role, and a movable and adjustable extrusion device is additionally arranged. The extrusion device needs to be manually adjusted when the workpiece is fixed, and the fixing process is complicated. Compared with the prior art, in the present application, the bottom support member is located below the workpiece, and the first inclined support surface and the second inclined support surface respectively abut the outer circumferential surface of the workpiece close to the bottom end from the inclined directions, thereby playing a supporting role from bottom to top and hindering the rolling of the workpiece to the two sides. The workpiece is fixed in the vertical plane. At the same time, through the cooperation of the support body and the pressing member, the pressing and fixing of the two end surfaces are realized, and the fixing in the vertical plane is assisted to a certain extent. The workpiece is clamped in all directions, the number of limiting members is reduced, and only the adjustment of the pressing member is required. The structure and operation are simpler, and the device can be applied to multiple different specifications of workpieces. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a first partial cross-sectional structural schematic diagram of a clamping device according to an embodiment of the present application;

[0024] Figure 2 FIG. 2 is a second partial cross-sectional structural schematic diagram of a clamping device according to an embodiment of the present application;

[0025] Figure 3 FIG. 3 is a structural schematic diagram of a support body in a first perspective according to an embodiment of the present application;

[0026] Figure 4 FIG. 4 is a structural schematic diagram of a support body in a second perspective according to an embodiment of the present application;

[0027] Figure 5 FIG. 5 is a structural schematic diagram of a bottom support member in a first perspective according to an embodiment of the present application;

[0028] Figure 6 FIG. 6 is a cross-sectional structural schematic diagram of a bottom support member according to an embodiment of the present application.

[0029] Figure 7 Another structure schematic view of the bottom support provided by the embodiment of the present application is provided.

[0030] Figure 8 A third partial section structure schematic view of the clamping device provided by the embodiment of the present application is provided. DETAILED DESCRIPTION

[0031] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined purposes, the specific embodiments, structures, features and effects of the clamping device according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.

[0032] As shown in Figures 1-2 , in one aspect, the present application provides a clamping device, comprising:

[0033] a support body (100);

[0034] a bottom support (200) connected to the support body (100), the bottom support (200) comprising a first inclined support surface (210) and a second inclined support surface (220), the first inclined support surface (210) and the second inclined support surface (220) being mutually angled, the first inclined support surface (210) and the second inclined support surface (220) being used for abutting against the outer circumferential surface of the workpiece (10);

[0035] a pressing member (300) connected with the support body (100), the pressing member (300) being used for pressing the workpiece (10) on the support body (100).

[0036] The workpiece (10) is generally a disc-shaped or approximately circular flat workpiece with an arc-shaped outer circumferential surface and a flat end surface, such as an end plate of a motor, which is disc-shaped and used to be connected with a supporting cylinder of the motor, and a plurality of threaded holes need to be machined on the end plate. During machining, the workpiece (10) or the end plate is vertically fixed on the operating table of a horizontal boring machine through a clamping device, and a hole is machined from one side end surface of the workpiece (10) inwards by the rotation and feeding of a boring tool on the boring machine. For the convenience of description, the end surface of the workpiece (10) facing the boring tool is referred to as the front end surface, and the end surface opposite to it is referred to as the rear end surface. The outer circumferential surface of the workpiece (10) is divided into upper and lower ends and left and right sides in the direction of actual machining of the workpiece (10). The support main body (100) is a main support structure connected to the operating table of the boring machine and can be fixed by bolts, etc. The support main body (100) directly or indirectly abuts against the rear end surface of the workpiece (10). The bottom end of the bottom support (200) is located in the same plane as the bottom end of the support main body (100), so that the bottom surface of the bottom support (200) can also abut against the operating table of the boring machine, thereby making the position of the bottom support (200) more stable. The bottom support (200) is contacted with the workpiece (10) by the top surface. The first inclined support surface (210) and the second inclined support surface (220) constitute all or part of the top surface of the bottom support (200). The first inclined support surface (210) and the second inclined support surface (220) are inclined inward, or in other words, the bottom support (200) includes the bottom surface of the first inclined support surface (210) and the second inclined support surface (220) opposite to each other. The first inclined support surface (210) and the second inclined support surface (220) are at an angle to each other, which means that the distance between the first inclined support surface (210) and the second inclined support surface (220) gradually increases in the direction away from the bottom surface, so that the first inclined support surface (210) and the second inclined support surface (220) constitute a V-shaped support surface. More specifically, the angle between the first inclined support surface (210) and the second inclined support surface (220) is greater than or equal to 90 degrees and less than or equal to 150 degrees. The first inclined support surface (210) and the second inclined support surface (220) are at an angle to each other, which realizes the abutment of the workpiece (10) between the bottom end and the two sides of the workpiece (10) with the outer circumferential surface of the workpiece (10), and under the action of gravity of the workpiece (10), the force exerted by the first inclined support surface (210) and the second inclined support surface (220) on the workpiece (10) is inclined, and the force includes horizontal relative component and vertical upward support force, thereby realizing the support of the workpiece (10) from the bottom end of the workpiece (10) and the limiting of the workpiece (10) from the two sides of the workpiece (10). The V-shaped support surface also enables the bottom support (200) to be used to support workpieces (10) of various diameters, thereby making the clamping device have a certain universality. The pressing member (300) is used to press the workpiece (10) from the front end surface of the workpiece (10) and cooperates with the support main body (100) to limit the workpiece (10) on the two end surfaces.

[0037] The clamping device and the boring machine provided by the present application mainly support the outer circumferential surface of the workpiece through the first inclined support surface and the second inclined support surface which are at an angle, thereby achieving the bottom support of the workpiece while hindering the rolling of the workpiece to the two sides, reducing the number of limiting pieces, and eliminating the need for limiting piece adjustment. In the prior art, multiple limiting pieces are often used to cooperate to fix in the vertical plane, resulting in a large number of limiting pieces. Multiple limiting blocks are arranged to correspond to the bottom end and the two sides of the outer circumferential surface of the workpiece. If the limiting pieces are fixed, they do not have universality for multiple specifications of workpieces. Alternatively, one limiting piece is arranged to correspond to the bottom end of the outer circumferential surface of the workpiece to play a supporting role, and a movable and adjustable extrusion device is additionally arranged. The extrusion device needs to be manually adjusted when the workpiece is fixed, and the fixing process is complicated. Compared with the prior art, in the present application, the bottom support is located below the workpiece, the first inclined support surface and the second inclined support surface respectively abut the outer circumferential surface of the workpiece close to the bottom end from the inclined direction, thereby playing a right-down-up supporting role and avoiding the rolling of the workpiece to the two sides. The workpiece is fixed in the vertical plane. Meanwhile, through the cooperation of the support body and the pressing piece, the pressing and fixing of the two end surfaces are realized, and the fixing in the vertical plane is assisted to a certain extent. The clamping of the workpiece in all directions is realized, the number of limiting pieces is reduced, and only the adjustment of the pressing piece is required. The structure and operation are simpler, and the device is applicable to multiple different specifications of workpieces.

[0038] In one embodiment, as shown in Figures 3-4 The support body (100) includes a support back plate (110), a bottom plate (120), and a reinforcing rib (130). The bottom plate (120) is used to be connected to the operation table of the boring machine. The support back plate (110) is connected perpendicularly to the bottom plate (120). The bottom support (200) and the pressing piece (300) are respectively connected to the support back plate (110). The reinforcing rib (130) is located on the side of the support back plate (110) opposite to the bottom support (200) and is respectively connected to the support back plate (110) and the bottom plate (120).

[0039] The support back plate (110) and the bottom plate (120) are both flat plate structures and are connected perpendicularly to each other to form a right-angle support body. The reinforcing rib (130) can be multiple, such as two, three, etc., and can be a triangular structure. The reinforcing rib (130) is connected to the support back plate (110) and the bottom plate (120) from the back of the support back plate (110), thereby playing a role of reinforcing the support back plate (110) and avoiding the problem of instability of the support back plate (110) during boring machine processing. The bottom support (200) and the pressing piece (300) are both connected to the support back plate (110), as shown in Figures 5-6As shown, the bottom support (200) is provided with two first through holes (202), and the support back plate (110) is provided with two screw holes or through holes corresponding to the first through holes (202). The bottom support (200) is fixed on the support back plate (110) by the support bolts (201) or the support bolts (201) and nuts.

[0040] Further, in order to better support the workpiece (10) from the bottom, the bottom support (200) is provided with a first inclined support surface (210) and a second inclined support surface (220). Figures 5-6 As shown, the bottom support (200) further includes a horizontal support surface (230) connected to the first inclined support surface (210) and the second inclined support surface (220), respectively. The distance between the first inclined support surface (210) and the second inclined support surface (220) gradually increases in the direction away from the horizontal support surface (230).

[0041] The first inclined support surface (210), the horizontal support surface (230) and the second inclined support surface (220) are sequentially connected to form the top surface of the bottom support (200), and the horizontal support surface (230) is located at the lowest position. By processing different angles of the first inclined support surface (210), the horizontal support surface (230) and the second inclined support surface (220), the horizontal support surface (230) can just abut against the bottom end of the workpiece (10) when the bottom support (200) supports the workpiece (10), so as to realize three-point support of the bottom support (200) to the outer circumferential surface of the workpiece (10), and the support strength is greater. It can be understood that in some larger workpiece (10) support, the bottom end of the workpiece (10) can not be in contact with the horizontal support surface (230).

[0042] In some other embodiments, as shown in the drawings, Figure 7 As shown, the bottom support (200) is of a split structure, and the bottom support (200) includes a first sub-support (240), a second sub-support (250) and a third sub-support (260). The first inclined support surface (210) is arranged on the first sub-support (240), the horizontal support surface (230) is arranged on the second sub-support (250), and the second inclined support surface (220) is arranged on the third sub-support (260). The first sub-support (240), the second sub-support (250) and the third sub-support (260) are used to be connected to the support main body (100) respectively, so that the first inclined support surface (210), the second inclined support surface (220) and the horizontal support surface (230) cooperate to abut against the outer circumferential surface of the workpiece (10).

[0043] The first sub-support (240), the second sub-support (250) and the third sub-support (260) are respectively provided with two first through holes (202), the support back plate (110) is provided with six screw holes or through holes corresponding to the first through holes (202), and the first sub-support (240), the second sub-support (250) and the third sub-support (260) are respectively fixed on the support back plate (110) through the support bolts (201) or the cooperation of the support bolts (201) and nuts. Different first sub-supports (240), second sub-supports (250) and third sub-supports (260) can be selected according to the size of the workpiece (10), for example, the first sub-support (240) and the third sub-support (260) with different inclination angles are selected, or the second sub-support (250) with different top surface heights is selected, so that the first inclined support surface (210), the horizontal support surface (230) and the second inclined support surface (220) can all abut against the outer circumferential surface of the workpiece (10), and the supporting force of the workpiece (10) is increased.

[0044] The pressing member (300) can be in various forms, and is designed to cooperate with the support back plate (110) to clamp the workpiece (10). In one embodiment, as shown in Figure 8 The pressing member (300) includes a first pad (310), a pressing plate (320), a penetrating rod (330) and a locking member (340). The first pad (310) is connected with the support body (100), the penetrating rod (330) penetrates through the pressing plate (320) and the support body (100), one end of the pressing plate (320) is used for abutting against the first pad (310), the other end of the pressing plate (320) is used for abutting against the workpiece (10), the locking member (340) is connected with the penetrating rod (330) and is used for moving relative to the penetrating rod (330) and interacting with the support body (100), and the distance between the pressing plate (320) and the support body (100) is adjusted through the penetrating rod (330).

[0045] The pressing members (300) are specifically two, which are arranged at intervals, and correspond to the left and right sides of the workpiece (10), i.e., the opposite sides of the middle position of the resin direction of the pressing members (300). The penetrating rods (330) are located between the first pads (310) and the workpiece (10), and are bolts, and the locking members (340) are nuts, which are connected to the part of the locking members (340) on the side of the support back plate (110) opposite to the pressing plate (320). By screwing the nuts, the nuts of the bolts press the pressing plate (320), so as to reduce the distance between the pressing plate (320) and the support back plate (110), and then the pressing plate (320) is pressed against the front end surface of the first pad (310) and the workpiece (10), so as to realize the pressing and fixing of the workpiece (10). Alternatively, the penetrating rods (330) can also be screws, and two nuts are respectively screwed on the penetrating rods (330) from the side of the pressing plate (320) opposite to the support back plate (110) and the side of the support back plate (110) opposite to the pressing plate (320), so as to adjust the distance between the pressing plate (320) and the support back plate (110), and then the pressing plate (320) is pressed against the front end surface of the first pad (310) and the workpiece (10).

[0046] Since the thickness of the workpiece (10) is different, in order to make the pressing member (300) adapt to workpieces (10) of various thicknesses, the first pad (310) is provided with a plurality of sub-pads, which are arranged in layers. The sub-pads are provided with pad through holes, and the bolts are screwed on the support back plate (110) after penetrating the pad through holes, so as to adjust the thickness of the first pad (310) by adjusting the number of sub-pads, and then realize the pressing of the pressing member (300) to workpieces (10) of various thicknesses.

[0047] In one embodiment, as shown in Figures 1-2 , the clamping device further comprises at least one second pad (400), which is detachably connected to the support body (100), and is used for abutting against the end surface of the workpiece (10) to clamp the workpiece (10) together with the pressing member (300).

[0048] The second pad (400) can be multiple, such as four, four second pads (400) are located between two pressing members (300), and are located above the bottom support (200), and the four second pads (400) can be uniformly distributed on the corresponding area of the workpiece (10), such as a quadrilateral distribution. The second pad (400) is used to contact the workpiece from the rear end face of the workpiece (10), and cooperates with the pressing member (300) to fix the workpiece (10) from both ends. The second pad (400) is used to ensure the perpendicularity of the workpiece (10). More specifically, in use, the second pad (400) is fixed on the support body (100), and the second pad (400) is milled to obtain a flat surface perpendicular to the plane of the operation table, and then the workpiece (10) is abutted on the second pad (400), so that the workpiece (10) can reach the perpendicularity requirement under the support of the second pad (400). By setting the second pad (400), the milling of the second pad (400) can be ensured to ensure the perpendicularity of the contact surface of the workpiece (10), and the perpendicularity requirement of the end face of the workpiece (10) and the top surface of the operation table can be ensured. By replacing the second pad (400), repeated milling can be realized, avoiding the need for fine boring treatment of the end face of the support body (100) or the support back plate (110), and avoiding the problem of thinning of the wall thickness of the support back plate (110) and reduction of the structural strength caused by milling the end face of the support back plate (110).

[0049] As shown in Figure 8 In the embodiment provided with the second pad (400), the thickness of the first pad (310) should be the sum of the thickness b of the second pad (400) and the thickness a of the workpiece (10) or the edge of the workpiece (10).

[0050] To realize the milling of the second pad (400) without damaging the connection strength between the second pad (400) and the support body (100), in an embodiment, the clamping device further comprises a second pad screw (500), the second pad (400) is provided with a counterbore (410), the support body (100) is provided with a connecting screw hole, and the second pad screw (500) passes through the counterbore (410) and is screwed on the connecting screw hole to detachably connect the second pad (400) to the support body (100).

[0051] The height of the nut of the second pad screw (500) is less than the depth of the counterbore (410), so that after the second pad screw (500) is tightened, the nut of the second pad screw (500) is embedded in the counterbore (410) and is away from the edge of the counterbore (410) by a distance, on the one hand, the second pad screw (500) will not be touched during milling of the second pad (400), and on the other hand, the size of the second pad (400) is reduced, making it easier to mill the second pad (400).

[0052] In another aspect, the present application provides a boring machine comprising the clamping device according to any one of the above, and a boring machine body, wherein the boring machine body comprises an operation table, and a fixing member is arranged on the operation table and used to connect with the support body (100) to fix the support body (100) on the operation table.

[0053] The fixing member can be only a bolt or a combination of a bolt and a pressing plate. The support body (100) is fixed on the operation table by adjusting the bolt to make the pressing plate press on the bottom plate (120) of the support body (100). Due to the arrangement of the second pad (400), the requirement for fixing the support body (100) is reduced, and the clamping device can be fixed on the operation table without the need of additionally arranging a support frame and the like, so that the clamping device has high flexibility and can be used in various boring machines.

[0054] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by 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. A clamping device, characterized in that The device comprises: a support body (100); a bottom support (200) connected to the support body (100), the bottom support (200) comprising a first inclined support surface (210) and a second inclined support surface (220), the first inclined support surface (210) and the second inclined support surface (220) being mutually angled, the first inclined support surface (210) and the second inclined support surface (220) being used to abut an outer circumferential surface of a workpiece (10); a pressing member (300) connected to the support body (100), the pressing member (300) being used to press the workpiece (10) against the support body (100); the pressing member (300) comprising a first pad (310), a pressing plate (320), a penetrating rod (330), and a locking member (340), the first pad (310) being connected to the support body (100), the penetrating rod (330) penetrating through the pressing plate (320) and the support body (100), one end of the pressing plate (320) being used to abut against the first pad (310), the other end of the pressing plate (320) being used to abut against the workpiece (10), the locking member (340) being connected to the penetrating rod (330) and being used to move relative to the penetrating rod (330) and interact with the support body (100), so as to adjust the distance between the pressing plate (320) and the support body (100) through the penetrating rod (330); the first pad (310) comprising a plurality of sub-pads, the plurality of sub-pads being stacked; at least one second pad (400) detachably connected to the support body (100), the second pad (400) being used to abut against an end surface of the workpiece (10) to clamp the workpiece (10) in cooperation with the pressing member (300), the second pad (400) being used for milling processing so that the second pad (400) obtains a vertical and flat surface; the thickness of the first pad (310) being the sum of the thickness of the second pad (400) and the thickness of the workpiece (10).

2. The clamping device according to claim 1, wherein: the support body (100) comprises a support back plate (110), a bottom plate (120), and a reinforcing rib (130); the bottom plate (120) is used to be connected to an operating table surface of a boring machine, the support back plate (110) is connected to the bottom plate (120) perpendicularly, the bottom support (200) and the pressing member (300) are respectively connected to the support back plate (110), the reinforcing rib (130) is located on a side of the support back plate (110) opposite to the bottom support (200) and is respectively connected to the support back plate (110) and the bottom plate (120).

3. The clamping device according to claim 1, wherein: The bottom support (200) further comprises a horizontal support surface (230) connected with the first inclined support surface (210) and the second inclined support surface (220) respectively. The distance between the first inclined support surface (210) and the second inclined support surface (220) gradually increases in the direction away from the horizontal support surface (230).

4. The clamping device according to claim 3, characterized in that, The bottom support (200) comprises a first sub-support (240), a second sub-support (250) and a third sub-support (260), the first inclined support surface (210) is arranged on the first sub-support (240), the horizontal support surface (230) is arranged on the second sub-support (250), and the second inclined support surface (220) is arranged on the third sub-support (260). The first sub-support (240), the second sub-support (250) and the third sub-support (260) are used to be connected to the support body (100) respectively, so that the first inclined support surface (210), the second inclined support surface (220) and the horizontal support surface (230) cooperate to abut against the outer circumferential surface of the workpiece (10).

5. The clamping device according to claim 1, characterized in that, The pressing members (300) are two, the two pressing members (300) are arranged at intervals, and the rod penetrating portions (330) of the two pressing members (300) are located between the two first pads (310).

6. The clamping device of claim 1, wherein The clamping device further comprises: Second pad screws (500), the second pad (400) is provided with a counterbore (410), the support body (100) is provided with a connecting screw hole, the second pad screw (500) passes through the counterbore (410) and is screwed on the connecting screw hole, so as to detachably connect the second pad (400) to the support body (100).

7. A boring machine, characterized in that The clamping device comprises the clamping device according to any one of claims 1-6, and a boring machine body, the boring machine body comprises an operation table, the operation table is provided with a fixing member, the fixing member is used to be connected with the support body (100), so as to fix the support body (100) on the operation table.

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