Clamp for machining arc curved surface

Abstract

The clamp for machining the arc curved surface comprises a base, a mounting seat for mounting a workpiece to be machined is arranged on the base, the workpiece to be machined is provided with a machining part with a curved surface, and the clamp is characterized in that a positioning groove capable of pre-positioning the workpiece to be machined is formed in the mounting seat; the groove bottom of the positioning groove is arranged to be matched with the curved surface of the machining part, the peripheral wall part of the mounting seat is directly used as a convex edge extending upwards along the bottom periphery of the groove bottom, and any part of the peripheral wall part of the mounting seat is locally provided with a sunken area which is concavely arranged downwards; and the convex edge on the positioning groove always tends to clamp the processing part in the positioning groove. The utility model has the advantages that the curved surface of the processing part can be attached to the bottom of the positioning groove, and the convex edge can always clamp the processing part in the positioning groove by utilizing the concave area, so that the processing part with a longer curved surface does not deform during processing, and the production quality and the production efficiency of a workpiece are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp used for processing circular arc surfaces. Background Art

[0002] When processing non-standard parts with special shapes, it is usually necessary to clamp and fix the non-standard parts before proceeding with subsequent processes. For example, for clamping a workpiece with an arc surface, the fixture used for processing the arc surface in the prior art is shown in the Chinese utility model "Jig for Processing Arc Surfaces of Workpieces" with patent number CN201320836406.4 (authorization announcement number CN203843568U). The fixture includes a circular chassis, a clamping plate and a threaded fastener. A plurality of grooves for clamping the workpiece are evenly distributed along the circumferential direction on the side surface of the circular chassis. The clamping plate has a top pressing portion for clamping the workpiece in the groove. The threaded fastener can fasten the clamping plate to the circular chassis so that the top pressing portion of the clamping plate presses the workpiece. When the clamp is in use, the workpiece to be processed is clamped in the groove of the circular chassis, and then the clamping plate is pressed onto the workpiece. Finally, the clamping plate and the circular chassis are fastened and assembled in the direction in which the clamping plate presses the workpiece through the threaded fastener so that the clamping plate presses the workpiece.

[0003] Although the above-mentioned clamp can clamp a workpiece with a circular arc surface, the above-mentioned clamp is only suitable for clamping a workpiece with a shorter circular arc surface. Figure 1 As shown, another problem will arise. The workpiece includes a main body 1′ in a long arc shape. The main body 1′ is divided into a processing portion 11′ with an arc-shaped surface and a mounting portion 12′ with a notch. The fixture needs to clamp the main body 1′ so as to process the processing portion 11′ of the main body 1′. If the above-mentioned fixture is used to clamp the main body 1′, the mounting portion 12′ of the main body 1′ needs to be clamped in the groove of the circular chassis, and the mounting portion 12′ clamped in the groove is clamped by a clamping plate; however, this clamping method will cause the long processing portion 11′ to be exposed to the fixture, so that during the processing of the processing portion 11′, the arc-shaped surface of the processing portion 11′ may be deformed, thereby affecting the processing quality of the workpiece with an arc surface. For this reason, it is necessary to make further improvements to the fixture used for processing arc surfaces. Summary of the invention

[0004] The first technical problem to be solved by the utility model is to provide a clamp which can avoid deformation during the processing, especially for the workpiece to be processed having a long curved surface, in view of the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide a fixture which can better perform specific processing according to the arc surface to be processed in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the first technical problem is: the fixture for processing circular arc curved surfaces includes a base, and the base is provided with a mounting seat for mounting a workpiece to be processed, wherein the workpiece to be processed has a processing portion with a curved surface, and is characterized in that: the mounting seat is provided with a positioning groove capable of pre-positioning the workpiece to be processed, the groove bottom of the positioning groove is arranged to match the curved surface of the processing portion, and the peripheral wall portion of the mounting seat directly serves as a convex edge extending upward along the bottom periphery of the groove bottom, wherein any one part of the peripheral wall portion of the mounting seat is provided with a downwardly concave recessed area, so that the convex edge thereon always has a tendency to clamp the processing portion in the positioning groove.

[0007] In order to prevent the processing portion with a longer curved surface from being deformed after the workpiece to be processed is removed from the fixture, preferably, the mounting seat with the convex edge has three peripheral walls: a first side wall with the recessed area, a second side wall opposite to the first side wall, and a third side wall connecting the first side wall and the second side wall, and the bottom of the positioning groove is provided with a limiting portion protruding from the surface at the opposite end of the third side wall, and the limiting portion has a gap with the ends of the first side wall and the second side wall respectively, and the limiting portion is provided for the mounting portion with two legs in the workpiece to be processed to be clamped, and the corresponding legs are exposed through the gap. The limiting portion arranged in the positioning groove can not only cooperate with the notch of the mounting portion to clamp the workpiece to be processed, but also leave a gap with the ends of the first side wall and the second side wall to allow the two legs to expose the base. When the user needs to remove the workpiece from the mounting seat, the processing part of the workpiece can be removed by gently moving the two legs of the mounting portion. There is no need to use hands to push the processing part in the positioning groove, which avoids deformation of the thinner processing part after processing during the removal process and ensures the processing quality of the processing part.

[0008] In order to make the first side wall provided with the recessed area always have the tendency to clamp the processing part to the positioning groove, preferably, an adjusting member is provided on the first side wall, and when the adjusting member is adjusted, the clamping degree between the first side wall and the processing part can be adjusted, and the recessed area constitutes an adjustment space. The recessed area allows a certain adjustment space between the first side wall and the processing part in the positioning groove, and the adjusting member can adjust the size of the adjustment space to adjust the clamping degree between the first side wall and the processing part.

[0009] In order to optimize the spatial layout on the base, preferably, at least two positioning grooves are provided on the mounting seat, and each two positioning grooves constitute a processing unit, and the third side walls of the adjacent positioning grooves in each processing unit are arranged back to back. Each processing unit can facilitate the user to install and remove the workpiece to be processed through the positioning grooves arranged back to back, and multiple processing units can be installed on the mounting seat to realize the simultaneous processing of multiple workpieces to be processed, thereby improving production efficiency.

[0010] In order to solve the second technical problem, preferably, it further comprises a driving mechanism capable of driving each processing unit on the mounting seat to rotate, and the driving mechanism can drive each processing unit to rotate to a processing position, so as to process the processing part in the positioning groove of each processing unit. The driving mechanism can drive each processing unit on the mounting seat to rotate to a processing position for specific processing.

[0011] Compared with the prior art, the advantages of the utility model are: by setting a positioning groove corresponding to the processing part with a curved surface, and using the peripheral wall part of the mounting seat as the convex edge of the positioning groove, the positioning groove can pre-position the processing part of the workpiece to be processed, so that the curved surface of the processing part can fit the bottom of the positioning groove; and by using the recessed area, the convex edge can always clamp the processing part in the positioning groove, so that the processing part with a longer curved surface can be stably installed in the positioning groove and clamped, so that the processing part will not protrude out of the fixture, and the clamped processing part can be processed more stably, that is, the processing part with a longer curved surface will not be deformed during processing, thereby improving the production quality and production efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a workpiece with a long arc surface in the background technology of the utility model;

[0013] Figure 2 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the base and the mounting seat in the embodiment of the utility model;

[0015] Figure 4 This is an exploded schematic diagram of the mounting seat and the adjusting member in the embodiment of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the mounting base in the embodiment of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the base in the embodiment of the utility model. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] like Figures 2 to 6 Shown is the best embodiment of the utility model.

[0020] like Figures 2 to 4 As shown, the fixture of this embodiment is used to clamp the workpiece 6 to be processed, and the workpiece 6 to be processed is divided into a processing portion 61 with a curved surface and a mounting portion 62 with two legs 621. In order to clamp the workpiece 6 to be processed, the fixture of this embodiment includes a base 1, a mounting seat 2, an adjusting member 3 and a driving mechanism 5. The base 1 is rotatably mounted on the side of the driving mechanism 5, and the driving mechanism 5 can drive the base 1 to rotate. The mounting seat 2 for mounting the workpiece 6 to be processed is mounted upward on the surface of the base 1 away from the driving mechanism 5. The vertical section of the mounting seat 2 is a fan-shaped shape that gradually spreads from bottom to top. Two positioning grooves 21 arranged opposite to each other are provided on the mounting seat 2. The two positioning grooves 21 constitute a processing unit. Each positioning groove 21 can pre-position the processing portion 61 of the workpiece 6 to be processed, and the base 1 is fixedly connected to the mounting seat 2. The driving mechanism 5 can drive the processing unit on the mounting seat 2 to rotate with the help of the base 1. The driving mechanism 5 can drive the processing unit to rotate to the processing position, thereby processing the processing portion 61 in the positioning groove 21 of the processing unit.

[0021] like Figure 2 As shown, the bottom of the positioning groove 21 in this embodiment is arranged to match the arc surface of the processing portion 61, and the peripheral wall portion of the mounting seat 2 directly serves as a convex edge extending upward along the bottom periphery of the groove bottom, wherein any one of the peripheral wall portions of the mounting seat 2 is partially provided with a recessed area recessed downward, so that the convex edge thereon always has the tendency to clamp the processing portion 61 to the positioning groove 21. In this embodiment, there are three peripheral walls of the mounting seat 2 with convex edges: the first side wall 22 is provided with a recessed area, the second side wall 23 opposite to the first side wall 22, and the third side wall 24 connecting the first side wall 22 and the second side wall 23. The third side walls 24 of the adjacent positioning grooves 21 in each processing unit are arranged back to back, and the bottom of the positioning groove 21 is provided with a limiting portion 25 protruding from its surface at the opposite end of the third side wall 24, and the limiting portion 25 has a gap with the ends of the first side wall and the second side wall 23, respectively, and the limiting portion 25 A mounting portion 62 having two legs 621 is provided in the workpiece 6 to be processed, and the corresponding legs 621 are exposed through intervals. When the user needs to remove the workpiece 6 to be processed from the mounting seat 2, the processing portion 61 placed in the positioning groove 21 can be removed by gently moving the two legs 621 of the mounting portion 62, without manually pressing the processing portion 61 in the positioning groove 21, thereby avoiding deformation of the thinner processing portion 61 after processing during the removal process, and ensuring the processing quality of the processing portion 61.

[0022] like Figure 4 and Figure 5 As shown, in this embodiment, an adjusting member 3 is provided on the first side wall 22. When the adjusting member 3 is adjusted, the clamping degree between the first side wall 22 and the processing portion 61 can be adjusted, and the recessed area constitutes an adjusting space 4. The adjusting member 3 in this embodiment is a bolt, and a through hole 221 for the adjusting member 3 to pass through is provided on the first side wall 22. The adjusting member 3 is installed on the mounting seat 2 through the through hole 221. The adjusting member 3 can drive the first side wall 22 to move in the adjusting space 4, thereby adjusting the distance between the first side wall 22 and the second side wall 23, and further adjusting the clamping degree between the first side wall 22 and the processing portion 61.

[0023] like Figure 5 and Figure 6 As shown, in order to enable the driving mechanism 5 to drive the mounting seat 2 to rotate, a transmission shaft 11 is provided on the surface of one side of the base 1 in this embodiment, and the transmission shaft 11 is connected to the driving mechanism 5. A fixing portion is provided on the surface of the other side of the base 1, and the mounting seat 2 is fixedly connected to the base 1 by means of the fixing portion. The driving mechanism 5 drives the base 1 to rotate through the transmission shaft 11, and the mounting seat 2 is fixedly connected to the base 1 through the fixing portion, so that the mounting seat 2 rotates with the base 1 to process the workpiece. Among them, the fixing part includes a fixing shaft 12 and a fixing groove 13 arranged on the base 1. The fixing shaft 12 is arranged at the center of the surface of the base 1 away from the driving mechanism 5. The mounting seat 2 is provided with a positioning hole 26 for inserting the fixing shaft 12. The cooperation between the fixing shaft 12 and the positioning hole 26 enables the mounting seat 2 to be pre-positioned on the base 1. The mounting seat 2 is also provided with a mounting hole 27 for the bolt to pass through. The fixing groove 13 is arranged corresponding to the mounting hole 27. The bolt passes through the mounting hole 27 and the fixing groove 13 to fix the mounting seat 2 to the base 1. The nuts at both ends of the bolt are respectively fixed on the mounting seat 2 and in the fixing groove 13, thereby realizing the fixed connection between the mounting seat 2 and the base 1.

[0024] The working process of this embodiment is as follows: first, the processing portion 61 of the workpiece 6 to be processed is placed in the positioning groove 21 of the mounting seat 2, the limiting portion 25 clamps the mounting portion 62, the two legs 621 of the mounting portion 62 pass through the gap and are exposed to the mounting seat 2, and the side of the processing portion 61 abuts against the second side wall 23 and the third side wall 24, so that the workpiece 6 to be processed is pre-positioned in the positioning groove 21; then, the adjusting member 3 drives the first side wall 22 to move in the adjustment space 4, adjusts the distance between the first side wall 22 and the second side wall 23, and then the first side wall 22 clamps the processing portion 61 in the positioning groove 21; then, the driving mechanism 5 drives the mounting seat 2 to rotate through the base 1, so that the processing unit on the mounting seat 2 rotates to the processing position, so as to process the processing portion 61 in the positioning groove 21 of the processing unit; finally, the user manually moves the two legs 621 of the mounting portion 62 to remove the processing portion 61 placed in the positioning groove 21, and then disassembles the processed workpiece to complete the processing of the workpiece.

Claims

1. A fixture for machining an arc surface, comprising a base (1), wherein the base (1) is provided with a mounting seat (2) for mounting a workpiece (6) to be machined, wherein: The workpiece (6) to be processed has a processing portion (61) with a curved surface, and is characterized in that: the mounting seat (2) is provided with a positioning groove (21) capable of pre-positioning the workpiece (6) to be processed, the groove bottom of the positioning groove (21) is arranged to match the curved surface of the processing portion (61), and the peripheral wall portion of the mounting seat (2) directly serves as a convex edge extending upward along the bottom periphery of the groove bottom, wherein any one part of the peripheral wall portion of the mounting seat (2) is provided with a downwardly concave depression area, so that the convex edge thereon always has the tendency to clamp the processing portion (61) in the positioning groove (21).

2. The clamp according to claim 1, characterized in that: The mounting seat (2) provided with the convex edge has three peripheral walls: a first side wall (22) provided with the concave area, a second side wall (23) opposite to the first side wall (22), and a third side wall (24) connecting the first side wall (22) and the second side wall (23); a groove bottom of the positioning groove (21) is provided with a limiting portion (25) protruding from the surface thereof at the opposite end of the third side wall (24); the limiting portion (25) is respectively provided with a gap with the ends of the first side wall and the second side wall (23); the limiting portion (25) is provided for clamping a mounting portion (62) having two legs (621) in a workpiece (6) to be processed, and the corresponding legs (621) are exposed through the gap.

3. The clamp according to claim 2, characterized in that: An adjusting member (3) is provided on the first side wall (22); when the adjusting member (3) is adjusted, the degree of clamping between the first side wall (22) and the processing portion (61) can be adjusted, and the recessed area constitutes an adjusting space (4).

4. The clamp according to any one of claims 1 to 3, characterized in that: At least two positioning grooves (21) are arranged on the mounting seat (2), and every two positioning grooves (21) constitute a processing unit. The third side walls (24) of adjacent positioning grooves (21) in each processing unit are arranged back to back.

5. The clamp according to claim 4, characterized in that: It also includes a driving mechanism (5) capable of driving each processing unit on the mounting seat (2) to rotate, and the driving mechanism (5) can drive each processing unit to rotate to a processing position, thereby processing the processing portion (61) in the positioning groove (21) of each processing unit.

Images