High-rigidity rack capable of being precisely positioned, locked and welded

Abstract

The utility model relates to the technical field of robots, in particular to a high-rigidity rack for precise positioning, locking and welding, which comprises a mounting disc and the like. A circular hole is formed in the middle of the mounting disc, mounting holes a for mounting flanges are circumferentially formed in the eccentric position of the middle of the mounting disc at intervals, six positioning grooves a are circumferentially formed in the edge of the top of the mounting disc at intervals, and threaded holes a are symmetrically formed in the edge of the bottom of the mounting disc relative to the positioning grooves a. According to the utility model, the matching surfaces of all parts of the rack are precisely machined, positioned by the keys and the clamping grooves, locked by the screws and then welded, so that the positioning precision is within 0.1 mm, and precise positioning is realized. And after being positioned, the parts of the rack are directly locked by screws, so that a positioning tool is omitted, and the cost of all tools is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to robot technical field especially relates to a high rigidity frame of precision positioning locking welding. BACKGROUND

[0002] Large complex structural parts play a vital role in the high-tech fields such as aerospace, energy power and heavy equipment. These structural parts not only have large size and complex structure, but also have very high machining precision, which brings great challenges to the manufacturing process. The traditional split offline machining mode has been difficult to meet the needs of modern industry due to unstable process and long cycle time. Although the gantry multi-axis CNC machine tool improves the machining efficiency to some extent, its inclusive machining mode is still not competent when facing large complex components.

[0003] To cope with these challenges, machining robots are widely used in large-span workspace operations of large complex structural parts. These robots need to cooperate with multiple degrees of freedom for machining. The existing robot supporting frame structure is simple, which is difficult to meet the requirements of high-precision, high-dynamic performance posture coupling motion of the robot, and high-precision machining of complex curved surfaces. However, this also puts forward very high requirements on the positioning accuracy of the robot frame.

[0004] The traditional welding positioning tooling cannot meet the high-precision positioning requirements of the frame due to insufficient accuracy. In actual operation, two sets of positioning tooling are often required for the frame: one set is used for rough positioning during welding and supports the frame to complete the machining of the inner side; the other set is used for precision machining and precisely matches the machined inner side of the frame to support the machining of the outer side of the frame. This scheme not only increases the manufacturing cost, but also prolongs the production cycle.

[0005] To solve this problem, we urgently need to design a high-rigidity frame with precision positioning and locking welding. SUMMARY

[0006] In order to overcome the shortcomings of the existing robot supporting frame structure, which is simple and difficult to meet the requirements of high-precision, high-dynamic performance posture coupling motion of the robot, and high-precision machining of complex curved surfaces, the technical problem of the utility model is to provide a high-rigidity frame with precision positioning and locking welding.

[0007] The utility model provides a high rigidity frame of precision positioning locking welding, it includes installation disc, installation ring frame and installation frame, the middle part of installation disc is opened the round hole, the middle part of installation disc eccentric position interval is provided with the installation hole a for installing flange, the top edge position interval of installation disc is opened the positioning groove a, the positioning groove a is six, the bottom edge of installation disc is opened the screw hole a about the positioning groove a, the positioning groove c that the installation frame is opened is aligned with one of the positioning groove a, the installation frame is welded between installation disc, the symmetric screw hole b that installation ring frame is opened, installation ring frame is opened the positioning groove b, and installation ring frame contacts the edge of installation disc, and the positioning groove b is aligned with the positioning groove a, and the screw hole a is aligned with the screw hole b, and through screw is combined into the screw hole a and screw hole b, and the welding seam is formed between installation disc and installation ring frame, and the circular hole is opened to installation ring frame.

[0008] Further, it also includes square tube a and square tube b, installation ring frame is intervally arranged around installation disc, the number of installation ring frame is five, and the square tube a is transversely arranged between adjacent installation ring frame, and the square tube b is arranged between installation ring frame and adjacent installation frame.

[0009] Further, installation ring frame is opened arc clamping groove a, and the arc clamping groove b that cooperates with installation disc is opened to installation frame, and installation frame, installation ring frame and installation disc are closely attached, and the contact area is increased.

[0010] Further, the installation hole b for installing hooke hinge is intervally opened to the circular hole of installation ring frame.

[0011] Further, the positioning groove a of installation disc and the positioning groove b of installation ring frame are positioned by key.

[0012] Further, the surface of installation disc, installation ring frame and installation frame is precisely machined, and is closely attached, and the positioning precision is 0.1mm.

[0013] The utility model discloses the beneficial effects of the utility model: the utility model adopts the cooperation surface of the parts of frame to be precisely machined, and is positioned with key and clamping groove, and is locked with screw, and then is welded, and the positioning precision is within 0.1mm, realizes precision positioning.The part of frame is directly locked with screw after positioning, cancels the positioning tooling, and saves the cost of all toolings.The parts are contacted with large surface, increase the contact area, reduce the contact stress, reduce the local elastic deformation, and increase the rigidity of structure.Locking then welding, the positioning precision is improved, and the deformation after welding is reduced, and it is not necessary to reserve machining allowance for the later process, and the overall weight of frame is reduced. ACCURACY

[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0015] Figure 2The utility model discloses a three-dimensional structure schematic diagram of installing the ring frame.

[0016] Figure 3 The utility model discloses a three-dimensional structure schematic diagram of installing the ring frame.

[0017] Figure 4 The utility model discloses a three-dimensional structure schematic diagram of installing the ring frame.

[0018] Figure 5 The utility model discloses a three-dimensional structure schematic diagram of installing the ring frame.

[0019] Figure 6 The utility model discloses a three-dimensional structure schematic diagram of installing the ring frame.

[0020] Figure 7 The utility model discloses a three-dimensional structure schematic diagram of installing the ring frame.

[0021] The marks of each part in the drawing are as follows: 1, installing disc, 101, threaded hole a, 102, positioning groove a, 103, mounting hole a, 104, round hole, 2, installing ring frame, 201, arc clamping groove a, 202, threaded hole b, 203, positioning groove b, 204, round hole, 205, mounting hole b, 3, mounting frame, 301, arc clamping groove b, 302, positioning groove c, 4, square tube a, 5, square tube b, 14, base a, 141, base b, 15, fixed ring a, 151, fixed ring b, 16, support a, 161, support b, 17, fixed ring seat a, 171, fixed ring seat b, 18, support frame a, 181, support frame b. Specific embodiments

[0022] The utility model will be described in detail below in connection with the drawings and specific embodiments, but not as the limitation of the utility model.

[0023] Embodiment: a kind of high rigidity rack of precision positioning locking welding, such as Figures 1-5As shown, including the installation disc 1, installation ring frame 2, installation frame 3, square tube a4 and square tube b5, the installation disc 1 middle part is provided with a circular hole 104, the installation disc 1 middle part is provided with installation hole a103 for installing flange at eccentric position, the installation disc 1 top edge is provided with positioning groove a102 at interval, the number of positioning groove a102 is six, the installation disc 1 bottom edge is provided with screw hole a101 about the positioning groove a102, the installation frame 3 is provided with arc clamping groove b301 matched with the installation disc 1, the installation frame 3 is provided with positioning groove c302 matched with one of the positioning groove a102, the arc clamping groove b301 of the installation frame 3 is welded between the installation disc 1, the installation ring frame 2 is provided with arc clamping groove a201, the arc clamping groove a201 of the installation ring frame 2 is provided with screw hole b202 at interval, the installation ring frame 2 is provided with positioning groove b203, the arc clamping groove a201 of the installation ring frame 2 is in contact with the edge of the installation disc 1, the contact area is increased and the contact stress is reduced, the local elastic deformation is reduced after welding, the rigidity of the structure is increased, the installation ring frame 2 is provided with circular hole 204, the installation ring frame 2 is provided with installation hole b205 for installing hooke joint at interval, the installation ring frame 2 is provided at interval around the installation disc 1, the number of installation ring frame 2 is five, the positioning groove b203 is matched with the positioning groove a102, the screw hole a101 is matched with the screw hole b202, the screw is screwed into the screw hole a101 and the screw hole b202, the welding seam is formed between the installation disc 1 and the installation ring frame 2, the square tube a4 is provided transversely between the adjacent installation ring frame 2, the square tube b5 is provided between the installation ring frame 2 and the adjacent installation frame 3, the positioning groove a102 of the installation disc 1 and the positioning groove b203 of the installation ring frame 2 are positioned by key, each surface of the installation disc 1, the installation ring frame 2 and the installation frame 3 is precisely machined, the close fit is achieved, and the positioning accuracy is 0.1mm.

[0024] As shown, Figure 6 When the previous rack is assembled and welded, the installation disc 1 is installed on the fixed ring a15 first, then the circular hole 204 of the installation ring frame 2 is sleeved on the fixed ring seat a17 for fixation, then the contact position of the installation ring frame 2 and the installation disc 1 is adjusted, then the welding machine is used for rough welding to complete the welding of the inner side of the rack, then the rack is placed reversely on the fixed ring b151 after the welding is completed, the installation ring frame 2 is placed in alignment with the fixed ring seat b171, the inner side of the machined rack is precisely matched, as shown, Figure 7 As shown, the possibility of rack structure change is relatively large in the design and development stage of the equipment, the welding positioning tooling is generally used for positioning, Figure 6 And Figure 7) cannot be reused, so the utilization rate is not high, causing waste. In order to further optimize, first align the positioning groove c302 of the mounting frame 3 with the positioning groove a102 of the mounting disc 1, then position and install through the key, and directly weld through the welding machine. Then align the threaded hole b202 of the mounting ring frame 2 with the threaded hole a101 of the mounting disc 1, then align the positioning groove b203 of the mounting ring frame 2 with the positioning groove a102 of the mounting disc 1, position and install through the key, and then seal weld the connection between the mounting disc 1 and the mounting ring frame 2 using a welding machine. Then install the square tube a4 and the square tube b5 in turn, and then weld and fix.

[0025] The above has carried out the detailed introduction to the application, the principle and the implementation mode of the application are set forth in the text by applying specific examples, the above example explanation is only for helping understanding the method of the application and its core idea; at the same time, for the general technical personnel in the art, according to the idea of the application, the specific implementation mode and the application range will have the change, according to the above, the content of the specification should not be understood as the limitation of the application.

Claims

1. A high rigidity gantry for precision positioning and locking welds, characterized by, The installation disc (1) is provided with a circular hole (104) in the middle, installation holes a (103) for installing flanges are arranged in the eccentric position of the middle of the installation disc (1) and are spaced apart in the circumferential direction, positioning grooves a (102) are arranged in the circumferential direction at the top edge of the installation disc (1) and are spaced apart, the number of the positioning grooves a (102) is six, threaded holes a (101) are symmetrically arranged in the bottom edge of the installation disc (1) with respect to the positioning grooves a (102), positioning grooves c (302) are arranged on the mounting frame (3) and are aligned with one of the positioning grooves a (102), the mounting frame (3) is welded with the installation disc (1), threaded holes b (202) are symmetrically arranged on the mounting ring (2), positioning grooves b (203) are arranged on the mounting ring (2), the mounting ring (2) is in contact with the edge of the installation disc (1), the positioning grooves b (203) are aligned with the positioning grooves a (102), the threaded holes a (101) are aligned with the threaded holes b (202), screws are screwed into the threaded holes a (101) and the threaded holes b (202), a weld is formed between the installation disc (1) and the mounting ring (2), and a circular hole (204) is arranged on the mounting ring (2).

2. A precision positioning, lock-welded high stiffness gantry according to claim 1, wherein, The square tube a (4) is further arranged, the mounting ring (2) is arranged around the installation disc (1) and is spaced apart, the number of the mounting ring (2) is five, the square tube a (4) is arranged transversely between adjacent mounting rings (2), and the square tube b (5) is arranged between the mounting ring (2) and the adjacent mounting frame (3).

3. A precision positioning, lock-welded high stiffness gantry according to claim 2, wherein, The mounting ring (2) is provided with an arc-shaped clamping groove a (201), the mounting frame (3) is provided with an arc-shaped clamping groove b (301) matched with the installation disc (1), the mounting frame (3), the mounting ring (2) and the installation disc (1) are closely combined, and the contact area is increased.

4. A precision positioning, lock-welded high stiffness gantry according to claim 3, wherein, The circular hole (204) of the mounting ring (2) is spaced apart in the circumferential direction and is provided with installation holes b (205) for installing a hooke joint.

5. A precision positioning, lock-welded high stiffness gantry according to claim 4, wherein, The positioning grooves a (102) of the installation disc (1) and the positioning grooves b (203) of the mounting ring (2) are positioned by keys.

6. A precision positioning, lock-welded high stiffness gantry according to claim 5, wherein, Each surface of the installation disc (1), the mounting ring (2) and the mounting frame (3) is precisely machined, closely combined, and the positioning precision is 0.1 mm.

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