High-precision positioning tool for positioning bearing welding

Abstract

According to the high-precision positioning tool for positioning bearing welding, when shaft sleeves are clamped and fixed, the distance between the shaft sleeves can be positioned through an inner positioning frame according to the needed span, then clamping plates in an outer clamping assembly are arranged in a first sliding groove or a second sliding groove, then the clamping plates are jacked by a jacking piece to move inwards, and then the shaft sleeves are clamped and fixed; the integral structure is simple, the operation is convenient, and the coaxiality and the spacing precision of the shaft sleeves are relatively high; the length directions of the adjacent first sliding grooves and the second sliding grooves are partially overlapped, that is, the positions of the clamping plates sliding in the first sliding grooves or the second sliding grooves can be freely adjusted in the axial direction of the long-shaft sleeve, stepless adjustment is achieved, workpieces with different span holes can be clamped and fixed, and universality is good.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to a high-precision positioning tool for positioning bearing welding. Background Art

[0002] At present, in the assembly process of products such as cranes and pump trucks, more and more welding parts need to ensure the coaxiality of the inner holes of two, three or more sleeve parts on them, so as to ensure higher assembly accuracy.

[0003] However, for welding workpieces with large span holes, when the coaxiality accuracy requirements are high, it is usually difficult to process them due to the lack of suitable machine tools, or the coaxiality accuracy cannot be guaranteed after processing, or the coaxiality alignment and detection tooling cannot be disassembled. Not only is the processing cost high, the post-weld inspection is also difficult, and the qualified rate of finished products is also low. Summary of the invention

[0004] The present invention aims to solve one of the problems existing in the prior art to at least a certain extent. To this end, the present invention proposes a high-precision positioning tool for positioning bearing welding.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A high-precision positioning tool for positioning bearing welding, comprising a long shaft sleeve and two clamping and positioning assemblies arranged on the long shaft sleeve at intervals, the center of the long shaft sleeve being penetrated by a central shaft hole, and the outer wall of the long shaft sleeve being respectively provided with a plurality of first slide grooves and second slide grooves with inconsistent opening directions, the plurality of first slide grooves and second slide grooves being arranged in sequence at intervals along the axial direction of the long shaft sleeve, and the length directions of adjacent first slide grooves and second slide grooves partially overlap, the clamping and positioning assembly comprising an inner positioning frame and an outer clamping assembly, the inner positioning frame being able to slide in the axial direction of the long shaft sleeve and being able to be fixed to the long shaft sleeve by a fixing member, the outer clamping assembly comprising a clamping plate sliding in the first slide groove or the second slide groove, and a pushing member arranged in the central shaft hole for pushing the clamping plate.

[0007] In some embodiments, fixing blocks are provided at both ends of the long shaft sleeve, a first threaded hole coaxially arranged with the long shaft sleeve is penetrated through the fixing block, the pushing member is a bolt threadedly connected to the first threaded hole, and one end of the bolt is used to push the clamping plate.

[0008] In some embodiments, a plurality of groups of slots for cooperating with a wrench are arranged on the bolt at intervals along the axial direction thereof.

[0009] In some embodiments, the slot portion includes notches symmetrically arranged on the outer wall of the bolt, the wrench can be clamped between the two notches, and the opening directions of the notches of two adjacent groups of slot portions are inconsistent.

[0010] In some embodiments, the openings of the first sliding groove and the second sliding groove are arranged at 90° to each other.

[0011] In some embodiments, the inner positioning frame includes a positioning plate, on which a center hole and a first eccentric hole symmetrically arranged on both sides of the center hole are provided, a sleeve is sleeved in the center hole, a second threaded hole passes through the outer wall of the sleeve, and the fixing member is a locking screw threadedly connected to the second threaded hole.

[0012] In some embodiments, the positioning plate includes a central annular plate and an extension plate symmetrically arranged on the outer wall of the central annular plate, the central hole is arranged on the central annular plate, and the first eccentric hole is arranged on the extension plate.

[0013] In some embodiments, the clamping plate includes a central circular plate and a sliding pressure plate symmetrically arranged on the outer side of the central circular plate, the central circular plate is arranged in the central axis hole, and the sliding pressure plate is arranged in the first sliding groove or the second sliding groove.

[0014] In some embodiments, the outer clamping assembly further includes a clamping plate sleeved outside the long shaft sleeve, and the clamping plate is arranged on the inner side of the clamping plate.

[0015] In some embodiments, the clamping plate has second eccentric holes symmetrically disposed on the upper and lower sides.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When clamping and fixing the shaft sleeve, the spacing of the shaft sleeve can be positioned by the inner positioning frame according to the required span, and then the clamping plate in the outer clamping assembly is set in the first slide groove or the second slide groove, and then the clamping plate is pushed inward by the ejector to clamp and fix the shaft sleeve. The overall structure is simple, the operation is convenient, and the coaxiality and spacing accuracy of the shaft sleeve are high;

[0018] 2. The length direction of the adjacent first chute and the second chute partially overlaps, that is, the clamping plate sliding in the first chute or the second chute can be adjusted to any position in the axial direction of the long shaft sleeve to achieve stepless adjustment, and can clamp and fix workpieces with different span holes, with better versatility;

[0019] 3. The opening directions of the first slide groove and the second slide groove are inconsistent, that is, the first slide groove and the second slide groove are not on the same plane, so that the long shaft sleeve will not be too thin and deformed, thereby ensuring the overall strength of the long shaft sleeve;

[0020] 4. In addition, the ejector is arranged in the central shaft hole, so that it does not take up space, reduces unnecessary space occupation, is suitable for installation in an environment with limited space, and can reduce unnecessary material waste, thereby reducing the overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 It is a cross-sectional schematic diagram of the shaft sleeve of the present invention when it is positioned;

[0023] Figure 3 For the present invention Figure 2 A magnified schematic diagram of point A;

[0024] Figure 4 It is a partial exploded schematic diagram of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a long shaft sleeve of the present invention;

[0026] Figure 6 The present invention is a schematic diagram of the structure of a bolt;

[0027] Figure 7 This is one of the structural schematic diagrams of the inner positioning frame of the present invention;

[0028] Figure 8 This is the second structural schematic diagram of the inner positioning frame of the present invention. DETAILED DESCRIPTION

[0029] The following specific implementation contents provide a variety of different embodiments or examples for implementing the present invention. Of course, these are only embodiments or examples and do not wish to be restrictive. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0030] like Figure 1-Figure 8 A high-precision positioning tool for positioning bearing welding is shown, comprising a long shaft sleeve 1 and two clamping and positioning components 11 arranged on the long shaft sleeve 1 at intervals. A central shaft hole 10 passes through the center of the long shaft sleeve 1, and a plurality of first slide grooves 2 and second slide grooves 3 with inconsistent opening directions are respectively arranged on the outer wall of the long shaft sleeve 1. Preferably, the opening directions of the first slide groove 2 and the second slide groove 3 are arranged at 90° to each other.

[0031] The first plurality of slide grooves 2 and second slide grooves 3 are arranged in sequence and spaced apart along the axial direction of the long-axis sleeve 1, that is, the first slide grooves 2 and the second slide grooves 3 are not on the same plane, so that the long-axis sleeve 1 will not be too thin and deformed, thereby ensuring the overall strength of the long-axis sleeve 1.

[0032] The clamping and positioning assembly 11 includes an inner positioning frame 12 and an outer clamping assembly 13. The inner positioning frame 12 can slide axially in the long shaft sleeve 1 and can be fixed on the long shaft sleeve 1 through a fixing member. That is to say, the spacing of the sleeve 100 can be positioned by the inner positioning frame 12 according to the required span.

[0033] The outer clamping assembly 13 includes a clamping plate 4 that slides in the first slide groove 2 or the second slide groove 3, and a pushing member arranged in the central shaft hole 10 for pushing the clamping plate 4; after the spacing positioning of the sleeve 100 is completed, the clamping plate 4 is pushed inward by the pushing member to clamp and fix the sleeve 100; in addition, the length direction of the adjacent first slide groove 2 and the second slide groove 3 partially overlap, that is, the clamping plate 4 sliding in the first slide groove 2 or the second slide groove 3 can be adjusted to any axial position of the long shaft sleeve 1 to achieve stepless adjustment, and can clamp and fix workpieces with different span holes, with better versatility; therefore, the overall structure is simple, the operation is convenient, and the coaxiality and spacing accuracy of the sleeve are high.

[0034] In addition, the ejector is arranged in the central shaft hole 10, so that no space is occupied, unnecessary space occupation is reduced, and it is suitable for installation in an environment with limited space. At the same time, unnecessary material waste can be reduced, thereby reducing the overall cost.

[0035] See also Figure 1 , Figure 4 , Figure 5 As shown, a fixing block 21 is provided at both ends of the long shaft sleeve 1, and a first threaded hole 22 coaxially arranged with the long shaft sleeve 1 is penetrated through the fixing block 21, and the pushing member is a bolt 23 threadedly connected to the first threaded hole 22, and one end of the bolt 23 is used to push the clamping plate 4.

[0036] The fixing block 21 can be fixed to both ends of the long-axis sleeve 1 by welding, and preferably, the fixing block 21 is a rectangular structure, so that the fixing block 21 has four planes, which is convenient for limiting the installation and fixing of the long-axis sleeve 1.

[0037] See also Figure 1-Figure 3 As shown, the push member is a bolt 23 threadedly connected to the first threaded hole 22. During operation, the bolt 23 can be directly screwed to screw it in or out, thereby tightening or loosening the clamping plate 4 to achieve clamping or loosening of the sleeve.

[0038] Further, see Figure 6 As shown, a plurality of groups of slots 31 for cooperating with a wrench are arranged at intervals along the axial direction of the bolt 23; thus, when the bolt 23 is being screwed, the wrench can be as close as possible to one side of the fixing block 21, which facilitates the application of force to the wrench, thereby facilitating the screwing of the bolt 23 and improving the convenience of operation.

[0039] Furthermore, the slot portion 31 includes slots 41 symmetrically arranged on the outer wall of the bolt 23, and the wrench can be clamped between the two slots 41; during the twisting operation, the wrench can be directly inserted into the two slots 41, so that the bolt 23 can be twisted by the wrench, and when the slot 41 is processed, the slot can be directly cut on the milling machine with a milling cutter, which is more convenient to process.

[0040] The opening directions of the notches 41 of two adjacent groups of the slot portions 31 are inconsistent.

[0041] Preferably, two adjacent groups of slots 31 are rotated 90° with respect to each other; alternatively, a plurality of the slots 2 are spirally arranged in sequence along the axial direction of the bolt 23; that is, when operating in a relatively narrow space, the operator uses a wrench to tighten the bolt 23 at the same side. After the wrench drives the bolt 23 to rotate a certain angle, there must be a group of slots 31 that are aligned with the operator's direction, so that the operator can insert the wrench into the slot 31 without moving, which is very convenient and can improve work efficiency.

[0042] See also Figure 1-Figure 4 , Figure 7 , Figure 8 As shown, the inner positioning frame 12 includes a positioning plate 61, on which a center hole 62 and a first eccentric hole 63 symmetrically arranged on both sides of the center hole 62 are provided, a sleeve 64 is sleeved in the center hole 62, a second threaded hole 65 passes through the outer wall of the sleeve 64, and the fixing piece is a locking screw 66 threadedly connected to the second threaded hole 65.

[0043] When the inner positioning frame 12 is performing the positioning operation, the sleeve 64 is sleeved on the long shaft sleeve 1, and then the sleeve 64 can drive the positioning plate 61 to slide and adjust the position along the axial direction of the long shaft sleeve 1 according to the actual situation. After the position is determined, the locking screw 66 is directly screwed into the second threaded hole 65. One end of the locking screw 66 is against the outer wall of the long shaft sleeve 1 to fix it. It has strong versatility and can adapt to the positioning of sleeves 100 with different spans; in addition, a first eccentric hole 63 is also provided on the positioning plate 61. Through the provision of the first eccentric hole 63, the weight of the positioning plate 61 can be reduced, and the sleeve or other workpieces can be welded in the first eccentric hole 63, thereby facilitating welding work.

[0044] Furthermore, the positioning plate 61 includes a center circular ring plate 71 and an extension plate 72 symmetrically arranged on the outer wall of the center circular ring plate 71, the center hole 62 is arranged on the center circular ring plate 71, the first eccentric hole 63 is arranged on the extension plate 72, and the center circular ring plate 71 and the extension plates 72 on both sides are made of iron as an integral part.

[0045] Therefore, the shaft sleeve or other welding workpiece can be positioned by the extension plate 72, and then, the upper and lower sides of the inner side of the shaft sleeve or other welding workpiece can be pre-welded by setting the first eccentric holes 63 on the upper and lower sides. At the same time, the center circular ring plate 71 will not block the shaft sleeve or other welding workpiece, so that pre-welding can also be performed on the left and right sides of the shaft sleeve or other welding workpiece, thereby increasing the pre-welding area of ​​the shaft sleeve or other welding workpiece, ensuring that it will not be deformed in subsequent welding, and improving the overall accuracy.

[0046] In order to improve the stability of clamping the sleeve or other welding workpiece, the outer clamping assembly 13 also includes a clamping plate 91 sleeved on the outside of the long shaft sleeve 1, and the clamping plate 91 is arranged on the inner side of the clamping plate 4. The clamping plate 91 has second eccentric holes 92 symmetrically on the upper and lower sides.

[0047] The clamping plate 91 has the same structure as the positioning plate 61, and can pre-weld the upper and lower sides of the outer side of the sleeve or other welding workpiece through the second eccentric hole 92. At the same time, the clamping plate 91 will not block the left and right sides of the sleeve or other welding workpiece, so that pre-welding can also be performed on the left and right sides of the sleeve or other welding workpiece, thereby increasing the pre-welding area of ​​the sleeve or other welding workpiece, ensuring that there will be no deformation in subsequent welding, and improving the overall accuracy.

[0048] The clamping plate 4 includes a central circular plate 81 and a sliding pressure plate 82 symmetrically arranged outside the central circular plate 81 . The central circular plate 81 is arranged in the central shaft hole 10 , and the sliding pressure plate 82 is arranged in the first sliding groove 2 or the second sliding groove 3 .

[0049] The center circular plate 81 and the two outer sliding pressure plates 82 are made of one-piece iron material with good overall strength. When the clamping plate 4 is installed, the clamping plate 4 is first inserted sideways from the first slide groove 2 or the second slide groove 3. When the center circular plate 81 is located in the center axis hole 10, the clamping plate 4 is rotated 90° as a whole, so that the center circular plate 81 will not fall out of the first slide groove 2 or the second slide groove 3, thereby realizing the installation of the clamping plate 4.

[0050] In conjunction with the drawings and the above, the basic principles and main features of the present invention and the advantages of the present invention are shown and described. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision positioning tool for positioning bearing welding, characterized in that: The invention comprises a long shaft sleeve (1) and two clamping and positioning components (11) arranged at intervals on the long shaft sleeve (1); a central shaft hole (10) passes through the center of the long shaft sleeve (1); a plurality of first slide grooves (2) and second slide grooves (3) with openings in different directions are arranged on the outer wall of the long shaft sleeve (1); the plurality of first slide grooves (2) and second slide grooves (3) are arranged in sequence at intervals along the axial direction of the long shaft sleeve (1); and adjacent first slide grooves (2) and second slide grooves (3) are arranged at intervals. ) partially overlap in the length direction, the clamping and positioning assembly (11) includes an inner positioning frame (12) and an outer clamping assembly (13), the inner positioning frame (12) can slide in the axial direction of the long shaft sleeve (1) and can be fixed to the long shaft sleeve (1) by a fixing member, the outer clamping assembly (13) includes a clamping plate (4) sliding in the first slide groove (2) or the second slide groove (3), and a pushing member arranged in the central axis hole (10) for pushing the clamping plate (4).

2. The high-precision positioning tool for positioning bearing welding according to claim 1, characterized in that: A fixing block (21) is provided at both ends of the long shaft sleeve (1), a first threaded hole (22) coaxially arranged with the long shaft sleeve (1) is penetrated through the fixing block (21), and the pushing member is a bolt (23) threadedly connected to the first threaded hole (22), and one end of the bolt (23) is used to push the clamping plate (4).

3. The high-precision positioning tool for positioning bearing welding according to claim 2, characterized in that: A plurality of groups of slots (31) for cooperating with a wrench are arranged at intervals along the axial direction of the bolt (23).

4. The high-precision positioning tool for positioning bearing welding according to claim 3 is characterized in that: The clamping groove portion (31) comprises notches (41) symmetrically arranged on the outer wall of the bolt (23); a wrench can be clamped between the two notches (41); and the opening directions of the notches (41) of two adjacent groups of clamping groove portions (31) are inconsistent.

5. The high-precision positioning tool for positioning bearing welding according to claim 1, characterized in that: The openings of the first sliding groove (2) and the second sliding groove (3) are arranged at 90 degrees to each other.

6. The high-precision positioning tool for positioning bearing welding according to claim 1, characterized in that: The inner positioning frame (12) includes a positioning plate (61), on which a center hole (62) and first eccentric holes (63) symmetrically arranged on both sides of the center hole (62) are arranged, a sleeve (64) is sleeved in the center hole (62), a second threaded hole (65) passes through the outer wall of the sleeve (64), and the fixing member is a locking screw (66) threadedly connected to the second threaded hole (65).

7. The high-precision positioning tool for positioning bearing welding according to claim 6, characterized in that: The positioning plate (61) comprises a central annular plate (71) and an extension plate (72) symmetrically arranged on the outer wall of the central annular plate (71) in an upper and lower direction, the central hole (62) is arranged on the central annular plate (71), and the first eccentric hole (63) is arranged on the extension plate (72).

8. The high-precision positioning tool for positioning bearing welding according to claim 1, characterized in that: The clamping plate (4) includes a central circular plate (81) and a sliding pressure plate (82) symmetrically arranged on the outside of the central circular plate (81); the central circular plate (81) is arranged in the central axis hole (10); and the sliding pressure plate (82) is arranged in the first sliding groove (2) or the second sliding groove (3).

9. The high-precision positioning tool for positioning bearing welding according to claim 1, characterized in that: The outer clamping assembly (13) further comprises a clamping pressure plate (91) sleeved on the outside of the long shaft sleeve (1), and the clamping pressure plate (91) is arranged on the inner side of the clamping plate (4).

10. The high-precision positioning tool for positioning bearing welding according to claim 9, characterized in that: The clamping plate (91) is symmetrically provided with second eccentric holes (92) on the upper and lower sides.

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