Clamping arm milling clamp

Abstract

The utility model provides a clamping arm milling clamp, and belongs to the technical field of machining. Comprising a base, clamp bodies are symmetrically installed on the two sides of the top of the base, and a pneumatic OK clamp is in threaded connection with the center of the base; and the clamping assembly is used for ensuring that a workpiece to be milled is kept at the correct position in the machining process, and the clamping assembly is connected with the base, the clamp body and the pneumatic OK clamp. Through the arrangement of the clamping assembly, positioning and clamping of the clamping arm can be rapidly achieved, the situation that perpendicularity errors are generated by the clamping arm can be reduced, structures in the clamping assembly are mutually buckled and complemented in function, and through accurate positioning and clamping, the perpendicularity of the clamping arm can be reduced. The clamping arm milling clamp can ensure that the clamping arm is kept at the correct position in the machining process, so that the machining precision is improved, and meanwhile, the production efficiency can be improved through rapid clamping.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, especially relates to a clamping arm milling fixture. BACKGROUND

[0002] The clamping arm milling fixture of the ultrasonic scalpel is a fixture specially designed for clamping and positioning the clamping arm of the ultrasonic scalpel, so as to maintain the stability and accuracy of the tool during processing.

[0003] Since the ultrasonic scalpel needs to meet the requirements of high-precision processing, the performance of the clamping arm milling fixture also needs to be further improved. When the existing clamping arm milling fixture clamps the movable jaw using the OK clamp, the movable jaw has a certain height, and there is no limiting connection between the movable jaw and the fixed jaw. When clamping, the fixed jaw is prone to deformation and tilting outward, resulting in perpendicularity error of the clamping arm, which is not conducive to improving the accuracy and yield of the clamping arm. Therefore, the utility model provides a clamping arm milling fixture to meet the needs. SUMMARY

[0004] The utility model wants to solve the technical problem that a clamping arm milling fixture is provided with a clamping assembly, which can quickly position and clamp the clamping arm, reduce the perpendicularity error of the clamping arm, and ensure the correct position of the clamping arm during processing, thereby improving the processing accuracy. At the same time, quick clamping can improve production efficiency. The above settings can solve the problem that the fixed jaw is prone to deformation and tilting outward during clamping, resulting in perpendicularity error of the clamping arm, which is not conducive to improving the accuracy and yield of the clamping arm.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A clamping arm milling fixture, comprising a base, two symmetrical clamping bodies are installed on the top of the base, and a pneumatic OK clamp is threadedly connected to the center of the base; a clamping assembly is used to ensure that the workpiece to be milled maintains the correct position during processing, and the clamping assembly is connected to the base, the clamping body and the pneumatic OK clamp.

[0007] Optionally, the clamping assembly comprises a fixed jaw fixedly connected to the side surface of the clamping body, the top of the base is symmetrically connected to a movable jaw, and a clamping arm is placed between the fixed jaw and the movable jaw, and the top of the clamping arm is the surface to be milled.

[0008] Optionally, a placement groove is formed on one side of the top of the fixed jaw, which matches the outer contour of the clamping arm, and a first arc-shaped groove and a second arc-shaped groove are formed on the inner arm of the placement groove.

[0009] Optionally, the top height dimension of the fixed jaw and the movable jaw is lower than the height dimension of the lowest point of the surface to be milled.

[0010] Optionally, the side surface of the fixed jaw is symmetrically fixedly connected with an optical axis, and a spring is sleeved on the optical axis.

[0011] Optionally, the movable jaw is provided with an axle hole corresponding to the position of the optical axis, and the inner wall dimension of the axle hole is consistent with the outer wall dimension of the optical axis.

[0012] Optionally, the top of the movable jaw is consistent with the outer contour of the clamping arm on one side close to the clamping arm, and the top of the movable jaw is provided with a clamping groove.

[0013] Optionally, one end of the placing groove is threadedly connected with a fixed block, and the opposite surfaces of the fixed block are fixedly installed with clamping points.

[0014] Optionally, the inner wall of the placing groove and the two sides of the movable jaw are consistent with the spacing of the outer contour of the clamping arm.

[0015] Optionally, the clamping groove corresponds to the position of the first arc-shaped groove.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] In the above scheme, by setting the clamping assembly, the positioning and clamping of the clamping arm can be quickly realized, the perpendicularity error of the clamping arm can be reduced, the structures in the clamping assembly are functionally linked and complement each other, the clamping arm milling clamp can ensure that the clamping arm maintains the correct position in the machining process through accurate positioning and clamping, thereby improving the machining precision, and meanwhile, the quick clamping can improve the production efficiency.

[0018] By setting the movable jaw and the fixed jaw in cooperation, when the movable jaw is clamped by the pneumatic OK clamp, the middle wedge block part of the pneumatic OK clamp can be expanded from the center to both sides at the same time, uniform force clamping is realized, the movable jaw and the fixed jaw clamp the clamping arm, the contact surfaces of the movable jaw and the fixed jaw are consistent with the outer contour of the clamping arm, the accurate positioning of the clamping arm in the machining process can be ensured, thereby realizing accurate cutting and ensuring the machining precision.

[0019] By setting the optical axis and the spring in cooperation, the optical axis and the spring are arranged between the fixed jaw and the movable jaw, the optical axis is used for limiting the movable jaw, the movable jaw cannot be rotated and inclined outward, the perpendicularity error can be reduced, and the machining accuracy is improved.

[0020] By setting the clamping groove, the first arc-shaped groove and the second arc-shaped groove cooperate, the clamping groove corresponds to the position of the first arc-shaped groove, and the second arc-shaped groove is arranged at one end of the clamping arm, and the slotted design can provide a better gripping point, facilitating the taking and placing of the clamping arm, making the clamping arm more stable and convenient when taking or moving, improving the convenience and efficiency of operation, and improving the practical value of the milling clamp. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the application and, together with the description, further serve to explain the principles of the application and to enable a person skilled in the relevant art to implement and use the application.

[0022] Figure 1 is a first perspective view of the clamping arm milling clamp;

[0023] Figure 2 is a second perspective view of the clamping arm milling clamp;

[0024] Figure 3 is an enlarged perspective view of the clamping arm;

[0025] Figure 4 is a perspective view of the fixed jaw and the movable jaw in cooperation;

[0026] Figure 5 is Figure 4 is an enlarged perspective view of the clamping arm at A in the middle.

[0027] Reference signs:

[0028] 1, base; 2, body; 3, fixed jaw; 301, placing groove; 302, first arc-shaped groove; 303, second arc-shaped groove; 304, fixed block; 305, clamping point; 4, movable jaw; 401, clamping groove; 5, pneumatic OK clamp; 6, clamping arm; 601, surface to be milled; 7, spring; 701, optical axis.

[0029] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the purpose of illustration, and is not intended to limit the present application to this specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0030] The utility model provides a kind of clamping arm milling clamp, which is described in detail below in conjunction with the drawings and specific embodiments. It should be noted here that, in order to make the embodiments more detailed, the following embodiments are the best, preferred embodiments, and other alternative methods can also be used by those skilled in the art to implement some known technologies. Moreover, the drawings are only used to describe the embodiments in more detail, and are not intended to specifically limit the utility model.

[0031] It should be noted that in the specification, "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like indicate that the described embodiments can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of those skilled in the related art to implement such a feature, structure or characteristic in conjunction with other embodiments, whether or not it is explicitly described.

[0032] Generally, the terms can be understood at least in part from the use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular or can be used to describe combinations of features, structures, or characteristics, in the plural. In addition, the term "based on" can be understood as not necessarily requiring exclusive consideration to a set of factors, but instead, can allow for additional factors not expressly described to be present, depending at least in part on the context.

[0033] It can be understood that the meanings of "on", "above" and "over" in the utility model should be interpreted in the broadest way, so that "on" not only means "directly on" something, but also includes the meaning of "on" something with intervening characteristics or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of "above" or "over" something without intervening characteristics or layers therebetween.

[0034] In addition, spatially relative terms such as "under", "below", "lower", "over", "upper" and the like can be used herein for ease of description to describe one element's or feature's relationship to another element(s) or feature(s) as illustrated in the drawings. The spatially relative terms are intended to encompass different orientations of the device in its use or operation, in addition to the orientations depicted in the drawings. The device can be oriented in other ways, and the spatially relative descriptors used herein can be interpreted accordingly.

[0035] As Figures 1 to 5As shown, the embodiment of the utility model provides a kind of milling clamp of clamping arm 6, including base 1, the top two sides of base 1 are symmetrically equipped with pincers 2, the center of base 1 is threadedly connected with pneumatic OK clamp 5;Clamping assembly, clamping assembly is used to ensure that the workpiece to be milled keeps correct position during processing, clamping assembly is connected with base 1, pincers 2 and pneumatic OK clamp 5 respectively, the milling clamp provided in the application is mainly positioned and clamped to the jaw by base 1, pincers 2 and pneumatic OK clamp 5, base 1 is mainly responsible for supporting milling clamp, base 1 is the part of machine tool fixture responsible for fixing fixture, it ensures the fixation of fixture on machine tool, to carry out accurate machining operation, base 1 keeps enough strength and stiffness, guarantee that fixture does not deform or generate excessive error when processing, pincers 2 is used to fix clamping arm 6 at specific position, to facilitate accurate processing, pneumatic OK clamp 5 can realize quick clamping and releasing workpiece, the cylinder of pneumatic OK clamp 5 is arranged at the bottom of base 1, the clamping arm of pneumatic OK clamp 5 is arranged at the top center of base 1, pneumatic OK clamp 5 is equipped with cylinder and piston inside, the movement of piston will drive clamping component to realize clamping workpiece, when gas source is connected, compressed air in cylinder drives cylinder piston to move, to drive fixture body to clamp or loosen workpiece, the structure and working principle of pneumatic OK clamp 5 are prior art disclosure, not too much here.

[0036] As one of the embodiments in the embodiment, as Figures 1 to 4 As shown, the clamping assembly includes fixed jaw 3 fixedly connected to the side of pincers 2, the top of base 1 is symmetrically connected with movable jaw 4, clamping arm 6 is placed between fixed jaw 3 and movable jaw 4, the top of clamping arm 6 is to be milled surface 601, the cross section of fixed jaw 3 and movable jaw 4 is two interlocking L-shaped, fixed jaw 3 is a fixed part, fixed jaw 3 is fixedly installed on pincers 2 and base 1, cross network is made on the working surface of fixed jaw 3, so that clamping arm 6 does not easily slide after clamping, and fixed jaw 3 is hardened by heat treatment, with good wear resistance, movable jaw 4 is a movable part, movable jaw 4 is slidably installed on base 1, cross network is also made on the working surface of movable jaw 4, to enhance the stability and friction force when clamping clamping arm 6, fixed jaw 3 and movable jaw 4 cooperate, through accurate mechanical structure design, the stable clamping of clamping arm 6 is realized, one end of to-be-milled surface 601 at the top of clamping arm 6 has upwardly curved radian (as Figure 4 As shown), by setting clamping assembly, not only the positioning and clamping of clamping arm 6 can be quickly realized, but also the situation that perpendicularity error of clamping arm 6 can be reduced, the structure between clamping assembly is functionally linked, complementary, through accurate positioning and clamping, clamping arm 6 milling clamp can ensure that clamping arm 6 keeps correct position during processing, to improve machining accuracy, at the same time, quick clamping can improve production efficiency.

[0037] In the embodiment, as shown in Figure 1 , Figure 4 and Figure 5 , the top side of the fixed jaw 3 is provided with a placing groove 301 matching the outer contour of the clamping arm 6, the inner arm of the placing groove 301 is provided with a first arc-shaped groove 302 and a second arc-shaped groove 303, the top side of the movable jaw 4 close to the clamping arm 6 matches the outer contour of the clamping arm 6, and the top of the movable jaw 4 is provided with a clamping groove 401 corresponding to the position of the first arc-shaped groove 302. Multiple grooves are provided to facilitate taking and save material cost to some extent. Through the cooperation of the clamping groove 401, the first arc-shaped groove 302 and the second arc-shaped groove 303, the clamping groove 401 corresponds to the position of the first arc-shaped groove 302, and the second arc-shaped groove 303 is arranged at one end of the clamping arm 6. The groove design can provide a better gripping point, facilitate the taking and placing of the clamping arm 6, make the clamping arm 6 more stable and convenient during taking or moving, improve the convenience and efficiency of operation, and improve the practical value of the milling clamp.

[0038] In the embodiment, as shown in Figures 1 to 5 , the top height dimension of the fixed jaw 3 and the movable jaw 4 is lower than the height dimension of the lowest point of the surface to be milled 601, one end of the placing groove 301 is threadedly connected with a fixed block 304, the opposite surfaces of the fixed jaw 3 are both fixedly installed with clamping points 305, the inner wall of the placing groove 301 and the two sides of the movable jaw 4 are both consistent with the spacing of the outer contour of the clamping arm 6, the surface to be milled 601 is higher than the fixed jaw 3 and the movable jaw 4, so as to avoid milling damage to the jaw or damage to the milling cutter, affect the processing effect and the service life of the tool, and the jaw lower than the height of the clamping arm 6 helps to maintain the positioning accuracy and processing accuracy of the workpiece. The inner wall of the placing groove 301 and the two sides of the movable jaw 4 are both consistent with the spacing of the outer contour of the clamping arm 6, so that a clamping point 305 can be added in the placing groove 301, the firmness and stability of the clamping arm 6 during clamping processing are improved, and the processing accuracy is improved. Through the cooperation of the movable jaw 4 and the fixed jaw 3, when the movable jaw 4 is clamped by the pneumatic OK clamp 5, not only can the middle wedge block part of the pneumatic OK clamp 5 expand to both sides from the center at the same time, realizing uniform force clamping, but also can ensure that the movable jaw 4 and the fixed jaw 3 clamp the clamping arm 6. The contact surfaces of the movable jaw 4 and the fixed jaw 3 and the outer contour of the clamping arm 6 are consistent, which can ensure the accurate positioning of the clamping arm 6 during processing, so as to realize accurate cutting and ensure the processing accuracy.

[0039] In the embodiment, as shown in Figure 2 and Figure 4As shown, the side of the fixed jaw 3 is symmetrically fixedly connected with an optical shaft 701, the optical shaft 701 is sleeved with a spring 7, the movable jaw 4 is provided with a shaft hole corresponding to the position of the optical shaft 701, the inner wall size of the shaft hole is consistent with the outer wall size of the optical shaft 701, the two ends of the optical shaft 701 are connected with the fixed jaw 3 and the movable jaw 4 respectively, the outer wall size of the optical shaft 701 is consistent with the inner wall size of the spring 7, the compression distance of the spring 7 is greater than the spacing between the movable jaw 4 and the clamping arm 6, so that the spring 7 does not affect the clamping of the movable jaw 4 to the clamping arm 6, by setting the optical shaft 701 and the spring 7, the optical shaft 701 and the spring 7 are arranged between the fixed jaw 3 and the movable jaw 4, the optical shaft 701 is used to limit the movable jaw 4, so that the movable jaw 4 cannot be inclined outwardly by rotating, the perpendicularity error can be reduced, and the machining accuracy is improved.

[0040] The working principle of the technical scheme is as follows:

[0041] In use, the clamping arm 6 is placed on the top of the fixed jaw 3, the outer contour of the clamping arm 6 is ensured to be attached to the inner wall of the placement groove 301 of the fixed jaw 3 and the clamping arm 6, the two clamping points 305 of the fixed jaw 3 clamp the two sides of one end of the clamping arm 6, the positioning and clamping of the clamping arm 6 are ensured, the clamping arm 6 milling clamp can effectively fix the clamping arm 6, the accuracy and efficiency of milling machining are ensured, the first arc-shaped groove 302 and the second arc-shaped groove 303 are arranged on the placement groove 301, the clamping groove 401 corresponds to the first arc-shaped groove 302, the slot design can provide a better gripping point, the clamping arm 6 is convenient to take and place, the clamping arm 6 is more stable and convenient during taking or moving, the operation convenience and efficiency are improved, after the placement of the clamping arm 6 is completed, the pneumatic OK clamp 5 is started, the middle wedge block part of the pneumatic OK clamp 5 is expanded to both sides from the center by the cylinder and the piston, uniform force clamping is realized, so that the clamping arm 6 is clamped between the movable jaw 4 and the fixed jaw 3, in the process that the movable jaw 4 approaches the fixed jaw 3, the spring 7 is extruded and compressed, the optical shaft 701 and the spring 7 are arranged between the fixed jaw 3 and the movable jaw 4, the optical shaft 701 is used to limit the movable jaw 4, so that the movable jaw 4 cannot be inclined outwardly by rotating, the perpendicularity error can be reduced, and the machining accuracy is improved, by setting the clamping assembly, the positioning and clamping of the clamping arm 6 can be quickly realized, and the perpendicularity error of the clamping arm 6 can be reduced, the structures in the clamping assembly are functionally linked and complementary, by accurate positioning and clamping, the clamping arm 6 milling clamp can ensure that the clamping arm 6 maintains the correct position during the machining process, thereby improving the machining accuracy, and simultaneously, the quick clamping can improve the production efficiency.

[0042] The utility model covers any alternative, modification, equivalent method and scheme which are made on the essence and range of the utility model. In order to make the public have the thorough understanding of the utility model, the specific details are explained in the following preferred embodiment of the utility model, and the utility model can also be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, the well-known method, process, flow, element and circuit are not explained in detail.

[0043] The above only is the preferred implementation of the utility model, should point out, for the ordinary skill in the art of the present technology, on the premise of not departing from the principle of the utility model, still can make a number of improvement and finish, these improvement and finish also should view as the protection range of the utility model.

Claims

1. A clamped-arm milling fixture comprising a base, characterized in that, The top of the base is symmetrically provided with a clamp body, and the center of the base is threadedly connected with a pneumatic OK clamp; A clamping assembly is used to ensure that the workpiece to be milled is kept in the correct position during processing, and the clamping assembly is connected with the base, the clamp body and the pneumatic OK clamp respectively; The clamping assembly comprises a fixed jaw fixedly connected to the side surface of the clamp body, and a movable jaw symmetrically and slidably connected to the top of the base, and a clamping arm is arranged between the fixed jaw and the movable jaw, and the top of the clamping arm is the surface to be milled; A placing groove is formed in one side of the top of the fixed jaw and matches the outer contour of the clamping arm, and a first arc-shaped groove and a second arc-shaped groove are formed in the inner arm of the placing groove; A light shaft is symmetrically fixedly connected to the side surface of the fixed jaw, and a spring is sleeved on the light shaft.

2. The fixture according to claim 1, wherein The top height dimension of the fixed jaw and the movable jaw is lower than the height dimension of the lowest point of the surface to be milled.

3. The fixture of claim 1 wherein, An axle hole is formed in the position corresponding to the light shaft of the movable jaw, and the inner wall dimension of the axle hole matches the outer wall dimension of the light shaft.

4. The fixture of claim 1 wherein, The top of the movable jaw near the side of the clamping arm matches the outer contour of the clamping arm, and a clamping groove is formed in the top of the movable jaw.

5. The fixture of claim 1 wherein, A fixed block is threadedly connected to one end of the placing groove, and clamping points are fixedly installed on the opposite surfaces of the fixed block and the fixed jaw.

6. The fixture of claim 1 wherein, The inner wall of the placing groove and the two sides of the movable jaw match the spacing of the outer contour of the clamping arm.

7. The fixture of claim 4 wherein, The position of the clamping groove corresponds to that of the first arc-shaped groove.

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