Welding auxiliary tool for positioning workpiece

Abstract

The utility model provides an auxiliary welding tool for locating a workpiece, which comprises a locating shaft and a locating caliper, the locating caliper comprises a correction ruler and a vertical ruler, the vertical ruler is vertically connected between the correction ruler and the locating shaft which are parallel to each other, one end of the locating shaft is connected with at least three clamping jaws through a connecting rod, and the other end of the locating shaft is connected with a connecting rod. The clamping jaw is arranged in the radius direction of the positioning shaft and comprises a first clamping plate, a second clamping plate and an air cylinder, the first clamping plate is fixedly connected with the connecting rod, the air cylinder is arranged on the connecting rod, and a telescopic rod of the air cylinder is connected with the first clamping plate; the first clamping plate comprises an arc surface, and the arc surface is used for abutting against the inner wall of the auxiliary ring to be welded. According to the auxiliary ring welding device, the auxiliary ring and the to-be-welded part are concentric through a simple structure, welding personnel can accurately weld the auxiliary ring on the curved surface of the to-be-welded part, and the welding accuracy of the auxiliary ring is improved.

Description

Technical Field

[0001] This application relates to the field of machine tool processing technology, and specifically to a welding auxiliary tooling for positioning workpieces. Background Technology

[0002] Lathes are machining equipment that primarily use cutting tools, boring tools, and drill bits to process rotating workpieces, and are widely used in the field of mechanical processing technology. Some workpieces, due to structural limitations, cannot be directly fixed to the machine tool's chucks, such as workpieces with curved ends. To solve this, an auxiliary ring can be welded to the workpiece surface, allowing the machine tool's chucks to connect to the auxiliary ring and thus fix the workpiece. The welding of this auxiliary ring requires that its central axis be collinear with the central axis of the workpiece to ensure machining accuracy. Therefore, there is an urgent need for a fixture to assist in welding this auxiliary ring and prevent axial misalignment after welding. Utility Model Content

[0003] This utility model provides a welding auxiliary fixture for positioning workpieces, which solves the problem that the axis of the workpiece and the axis of the auxiliary ring cannot be collinear when welding auxiliary rings on part of the workpiece surface, and improves the accuracy of auxiliary ring welding.

[0004] This utility model provides a welding auxiliary fixture for positioning a workpiece, including a positioning shaft and a positioning caliper. The positioning caliper includes a calibration ruler and a vertical ruler. The vertical ruler is vertically connected between the parallel calibration ruler and the positioning shaft. One end of the positioning shaft is connected to at least three jaws via a connecting rod. The jaws are arranged in the radial direction of the positioning shaft and include a first clamping plate, a second clamping plate, and a cylinder. The second clamping plate is fixedly connected to the connecting rod, and the cylinder is disposed on the connecting rod. The telescopic rod of the cylinder is connected to the first clamping plate. The first clamping plate includes an arc surface, which is used to abut against the inner wall of the auxiliary ring to be welded.

[0005] Optionally, it also includes a base, a bracket, and a lead screw motor. The base is connected to the bracket, the bracket is connected to the positioning shaft, and the lead screw motor is mounted on the bracket, with the lead screw abutting against the axial end face of the positioning shaft.

[0006] Optionally, the positioning axis and the vertical ruler include a level.

[0007] Optionally, the vertical ruler includes a first vertical ruler and a second vertical ruler, wherein the first vertical ruler and the second vertical ruler are fitted together.

[0008] Optionally, a plumb bob is also included. Both the first and second vertical rulers have positioning lines, and the plumb bob is attached to the first vertical ruler and is in contact with the positioning lines.

[0009] Optionally, the correction ruler is hinged with the vertical ruler, and a protractor is arranged at the hinge position, and the correction ruler is clamped with a limiting pin on the protractor.

[0010] The utility model discloses the beneficial effects are:

[0011] The welding auxiliary tool is used for positioning the auxiliary ring on the surface of the to-be-welded piece, so that the operator can conveniently weld the auxiliary ring on the surface of the to-be-welded piece. Specifically, one end of the positioning shaft is used for fixing and clamping the auxiliary ring, and the other end is connected with the positioning caliper perpendicularly. When the correction ruler is attached to the surface of the to-be-welded piece and is horizontal with the positioning shaft, it indicates that the central axis of the auxiliary ring is horizontal with the central axis of the to-be-welded piece. At the same time, the length of the vertical ruler is adjusted to be equal to the radius of the to-be-welded piece, so that the central axis of the auxiliary ring is collinear with the central axis of the to-be-welded piece. Through the simple mechanism, the auxiliary ring is concentric with the to-be-welded piece, and the auxiliary ring is fixed on the curved surface of the to-be-welded piece, so that the welding personnel can accurately weld the auxiliary ring on the curved surface of the to-be-welded piece, and the welding accuracy of the auxiliary ring is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Fig. 1 is a front structure schematic diagram of a welding auxiliary tool for positioning a workpiece.

[0013] REFERENCE SIGNS

[0014] 1: positioning shaft; 2: correction ruler; 3: vertical ruler; 31: first vertical ruler; 32: second vertical ruler; 4: connecting rod; 5: clamping jaw; 51: first clamping plate; 52: second clamping plate; 6: support; 7: screw motor; 8: base; 9: protractor; 10: auxiliary ring. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments. In addition, "in an embodiment" or "in an embodiment" appearing at various places in the specification does not necessarily mean the same embodiment. In addition, these specific features, structures or characteristics can be combined in any suitable manner in one or more embodiments.

[0016] It is also important to note that the terms "first" and "second" and the like are used herein merely to differentiate one element from another, without necessarily requiring or implying any actual such relationship or order between such elements. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process or method. An element proceeded by "comprises a" does not, without more constraints, exclude the presence of additional identical elements in the process or method.

[0017] The lathe is mainly used for machining equipment of rotating workpieces by turning tools, boring tools, drilling tools and the like, and is widely used in the field of mechanical processing technology. Some workpieces cannot be directly fixed on the chuck 5 of the machine tool due to the limitation of their structure, for example, workpieces with curved end heads. To solve this problem, an auxiliary ring 10 can be welded on the surface of the workpiece to connect the chuck 5 of the machine tool with the auxiliary ring 10 and thereby fix the workpiece. The welding of the auxiliary ring 10 needs to meet the requirement that the center axis of the auxiliary ring 10 should be collinear with the center axis of the workpiece to ensure the accuracy of the machining of the workpiece, and therefore there is an urgent need for a tooling for welding the auxiliary ring 10 to prevent the axial deviation after welding.

[0018] As shown in Figure 1 , the workpiece to be welded is a cylinder containing a spherical surface, and the auxiliary ring 10 needs to be welded on the spherical surface, which brings difficulties to the positioning and welding of the auxiliary ring 10, because it is difficult to determine whether the center of the auxiliary ring 10 is collinear with the center axis of the cylinder, and if not, it will affect the machining of the workpiece on the machine tool.

[0019] Referring to Figure 1 , the utility model provides a kind of welding auxiliary tooling for positioning workpiece, including positioning shaft 1, positioning caliper, the positioning caliper includes correct ruler 2 and plumb 3, the plumb 3 is vertically connected between the correct ruler 2 and the positioning shaft 1, at least three clamps 5 are connected to the one end of the positioning shaft 1 by connecting rod 4, the clamp 5 is set in the radial direction of the positioning shaft 1, and including first clamping plate 51, second clamping plate 52, pneumatic cylinder, the second clamping plate 52 is fixedly connected with the connecting rod 4, the pneumatic cylinder is arranged on the connecting rod 4, and the telescopic rod of the pneumatic cylinder is connected with the first clamping plate 51;The first clamping plate 51 contains camber surface, and the camber surface is used to abut with the inner wall of auxiliary ring 10 to be welded.

[0020] The welding auxiliary tool is used for positioning the auxiliary ring 10 on the surface of the to-be-welded part, so that the operator can conveniently weld the auxiliary ring 10 on the surface of the to-be-welded part. Specifically, after the one end of the positioning shaft 1 is used for fixing and clamping the auxiliary ring 10, the other end is connected with the positioning caliper perpendicularly. When the correct ruler 2 is attached to the surface of the to-be-welded part and is horizontal with the positioning shaft 1, it is indicated that the central axis of the auxiliary ring 10 is horizontal with the central axis of the to-be-welded part. At the same time, the length of the vertical ruler 3 is adjusted, so that the length is equal to the radius of the to-be-welded part, and it is determined that the central axis of the auxiliary ring 10 is collinear with the central axis of the to-be-welded part. Through the simple mechanism, the auxiliary ring 10 is concentric with the to-be-welded part, and the auxiliary ring 10 is fixed on the curved surface of the to-be-welded part, so that the welding personnel can accurately weld the auxiliary ring 10 on the curved surface of the to-be-welded part, and the welding accuracy of the auxiliary ring 10 is improved.

[0021] The welding auxiliary tool further comprises a base 8, a support 6 and a lead screw motor 7, the base 8 is connected with the support 6, the support 6 is connected with the positioning shaft 1, the lead screw motor 7 is arranged on the support 6, and the lead screw is abutted with the axial end face of the positioning shaft 1. The lead screw motor 7 is used for pushing the positioning shaft 1, so that the auxiliary ring 10 is tightly attached to the spherical surface of the to-be-welded part after being subjected to the thrust force, and the convenience of auxiliary welding is improved.

[0022] It should be noted that the positioning shaft 1 and the vertical ruler 3 comprise a level in the utility model. The operator can determine whether the vertical ruler 3 and the positioning shaft 1 are horizontal through the level. The vertical ruler 3 comprises a first vertical ruler 31 and a second vertical ruler 32, and the first vertical ruler 31 is sleeved with the second vertical ruler 32. The first vertical ruler 31 and the second vertical ruler 32 are arranged in a sleeved mode, so that the length of the vertical ruler 3 is adjustable, that is, the horizontal distance between the positioning shaft 1 and the correct ruler 2 is adjustable, and then the to-be-welded parts of various sizes can be compatible.

[0023] In some embodiments, the welding auxiliary tool further comprises a lead weight, the first vertical ruler 31 and the second vertical ruler 32 comprise positioning lines, and the lead weight is hung on the first vertical ruler 31 and attached to the positioning line. The operator can determine whether the vertical ruler 3 is perpendicular to the positioning shaft 1 and the correct ruler 2 through the lead weight and the positioning lines on the first vertical ruler 31 and the second vertical ruler 32, and further check whether the position of the fixed auxiliary ring 10 is on the axis of the to-be-welded part, and then the welding accuracy of the auxiliary ring 10 is improved.

[0024] In some embodiments, the correct ruler 2 is hinged with the vertical ruler 3, an angle gauge 9 is arranged at the hinge position, and the correct ruler 2 is clamped with the limiting pin on the angle gauge 9.

[0025] In the embodiment, the correction ruler 2 is hingedly connected with the vertical ruler 3, which is beneficial to the compatibility of other irregular workpieces to be welded, the protractor 9 is used to display the included angle between the correction ruler 2 and the vertical ruler 3, and after the included angle is determined, the included angle between the correction ruler 2 and the vertical ruler 3 is fixed by using the limiting pin.

[0026] Finally, the utility model provides a kind of welding auxiliary tool for positioning workpiece, including positioning shaft 1, positioning caliper, the positioning caliper includes correction ruler 2 and vertical ruler 3, the vertical ruler 3 is vertically connected between the correction ruler 2 and the positioning shaft 1 being parallel to each other, at least three claws 5 are connected to the one end of the positioning shaft 1 by connecting rod 4, the claw 5 is arranged in the radial direction of the positioning shaft 1, and it includes first clamping plate 51, second clamping plate 52, pneumatic cylinder, the second clamping plate 52 is fixedly connected with the connecting rod 4, the pneumatic cylinder is arranged on the connecting rod 4, and the telescopic rod of the pneumatic cylinder is connected with the first clamping plate 51;The first clamping plate 51 contains camber surface, and the camber surface is used to abut with the inner wall of the auxiliary ring 10 to be welded.The utility model, using simple structure makes auxiliary ring 10 and workpiece to be welded concentric, so that welding personnel accurately welds auxiliary ring 10 on the curved surface of workpiece to be welded, and the accuracy of auxiliary ring 10 welding is improved.

[0027] The above-described embodiments only express the implementation of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that, for ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A welding aid for positioning a workpiece, characterized by, The utility model relates to a positioning device, including positioning axis (1), positioning caliper, the positioning caliper includes corrector (2) and plumb rule (3), the plumb rule (3) is connected perpendicularly between the corrector (2) with the positioning axis (1) mutually parallel, one end of the positioning axis (1) is connected with at least three claws (5) through connecting rod (4), the claw (5) is arranged in the radial direction of the positioning axis (1), and including first clamping plate (51), second clamping plate (52), pneumatic cylinder, the second clamping plate (52) is fixedly connected with the connecting rod (4), the pneumatic cylinder is arranged on the connecting rod (4), and the telescopic rod of the pneumatic cylinder is connected with the first clamping plate (51), the first clamping plate (51) contains arc surface, and the arc surface is used to abut with the inner wall of the auxiliary ring (10) to be welded.

2. The welding aid for positioning a workpiece of claim 1, wherein, Still including base (8), support (6), lead screw motor (7), the base (8) is connected with the support (6), the support (6) is connected with the positioning axis (1), the lead screw motor (7) is arranged on the support (6), and the shaft center end surface of lead screw is abutted with the positioning axis (1).

3. The welding aid for positioning a workpiece of claim 2, wherein, The positioning axis (1) and the plumb rule (3) include level.

4. The welding aid for positioning a workpiece of claim 3, wherein, The plumb rule (3) includes first plumb rule (31) and second plumb rule (32), the first plumb rule (31) is sleeved with the second plumb rule (32).

5. The welding aid for positioning a workpiece of claim 4, wherein, Still including lead plummet, the first plumb rule (31) and the second plumb rule (32) all include positioning line, the lead plummet is hung on the first plumb rule (31) and is attached with the positioning line.

6. The welding aid for positioning a workpiece of claim 1, wherein, The corrector (2) is hinged with the plumb rule (3), and is provided with protractor (9) at the hinge, and the corrector (2) is clamped with the limit pin on the protractor (9).

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