A clamping tool for a lug rope sleeve lathe and a clamping method

Abstract

A kind of lug rope sleeve lathe clamping tool and clamping method, including clamping end, clamping end includes cylindrical clamping seat, the periphery of one end of clamping seat is equipped with annular alignment surface, the same end of clamping seat is fixedly connected with connection conversion end, connection conversion end is a pair of oppositely arranged plate structures, the center of two plate structures is correspondingly provided with connecting pin hole, connecting pin hole is passed through with connecting pin, one connecting pin hole is located at the inside of plate structure and is provided with inner stop opening positioning surface along its edge, connecting pin is located at the outside of the plate structure and is provided with connecting flange, and the outside of the plate structure and connecting flange are all provided with several corresponding screw holes around the center of connecting pin hole, screw hole is all equipped with connecting bolt, another plate structure is provided with several screw holes around the center of connecting pin hole, and screw hole is equipped with adjusting screw a;The application also discloses the clamping method of the above-mentioned clamping tool, solves the problem of difficult clamping when lug rope sleeve is machined on lathe.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical processing equipment, and particularly relates to a clamping tool for a lug rope sleeve lathe. BACKGROUND

[0002] The lug rope sleeve is a commonly used connecting piece in hoisting equipment such as a drilling rig derrick and a base, and belongs to an irregular special-shaped part. Since the lug rope sleeve has a lug at one end and a conical surface at the other end, the inner and outer conical surfaces need to be machined, and in the conventional machining method, the lathe can only be selected for machining. However, since the clamping end is a circular lug, the four jaws of the lathe cannot clamp the workpiece, and there are problems such as clamping difficulty and poor rotation reliability. To solve the above problems, a special clamping tool must be designed to realize the machining of the special-shaped lug rope sleeve on the lathe. SUMMARY

[0003] The present application aims to provide a clamping tool for a lug rope sleeve lathe, which solves the problem of clamping difficulty in machining the irregularly shaped lug rope sleeve on the lathe.

[0004] Another object of the present application is to provide a clamping method using the above-mentioned clamping tool.

[0005] The technical solution adopted by the present application is a clamping tool for a lug rope sleeve lathe, which comprises a clamping end, the clamping end comprising a clamping seat, the clamping seat being of a cylindrical structure, an annular alignment surface being provided on the periphery of one end of the clamping seat, a connection conversion end being fixedly connected to the same end of the clamping seat, the connection conversion end being a pair of oppositely arranged plate-shaped structures, a connection pin shaft hole being formed in the center of each of the two plate-shaped structures, a connection pin shaft being inserted into the two connection pin shaft holes, an inner stop opening positioning surface being provided on the inner side of one of the plate-shaped structures along the edge thereof, a connection flange being provided on the outer side of the connection pin shaft of the plate-shaped structure, a plurality of corresponding threaded holes being provided on the outer side of the plate-shaped structure and the connection flange around the center of the connection pin shaft hole, a connection bolt being arranged in each of the threaded holes, a plurality of threaded holes being provided on the other plate-shaped structure around the center of the connection pin shaft hole, and an adjusting screw a being arranged in each of the threaded holes.

[0006] The present application is further characterized in that,

[0007] The connection pin shaft sleeve is provided with an adjusting pad, the adjusting pad being provided with a positioning surface a and a positioning surface b, and the positioning surface a is in contact with the inner stop opening positioning surface.

[0008] The adjusting pad adopts a stepped structure.

[0009] The end of the connection pin shaft which is not provided with a flange is provided with a through turning hole along the radial direction thereof.

[0010] The clamping end of the clamping seat is provided with two threaded holes at the positions corresponding to the two ears of the lifting lug sleeve, and an adjusting screw b is arranged in the threaded hole.

[0011] The end of the adjusting screw b is provided with a ball head structure.

[0012] The end of the adjusting screw a is provided with a ball head structure.

[0013] Another technical solution adopted by the present application is a clamping method using the above clamping tool, which is implemented according to the following steps:

[0014] Step 1: According to the distance B from the outside of the lifting lug sleeve to the central axis thereof, the thickness of the required adjusting pad is calculated, and a corresponding adjusting pad is selected.

[0015] Step 2: The positioning surface a on the adjusting pad is placed into the inner stop surface, and the positioning surface a on the adjusting pad and the inner stop surface are matched with a small gap.

[0016] Step 3: The lifting lug sleeve is hoisted and placed between the two plate-shaped structures, so that one side surface of the lifting lug sleeve is in contact with the positioning surface b on the adjusting pad.

[0017] Step 4: The positions of the adjusting pad and the lifting lug sleeve are finely adjusted so that the connecting pin shaft can pass through the adjusting pad and the lifting lug sleeve in sequence.

[0018] Step 5: The position of the connecting pin shaft is finely adjusted by rotating the hole so as to align the flange through hole on the connecting pin shaft with the connecting threaded hole, the connecting bolt is passed through the flange through hole on the connecting pin shaft and screwed into the connecting bolt hole of the plate-shaped structure, and the connecting bolt is tightened.

[0019] Step 6: The adjusting screw a is screwed into the connecting bolt hole of the plate-shaped structure, the adjusting screw a is tightened, the lifting lug sleeve is tightly attached to the positioning surface b, then the adjusting screw b is screwed into the connecting bolt hole of the clamping seat, the ball head of the adjusting screw b presses the lifting lug sleeve, and the lifting lug sleeve is fixed and pressed in the clamping seat.

[0020] Step 7: The clamping seat is clamped on the ordinary lathe chuck, after the large outer circle and the annular positioning surface of the clamping seat are aligned, the chuck claw is tightened, so that the rotation center of the clamping seat coincides with the rotation center of the lathe, and at this time the turning processing of the lifting lug sleeve can be performed.

[0021] The present application has the following advantages:

[0022] 1. The present application has the advantages of compact structure, safety and reliability, convenient use, effective solution to the clamping problem of the lifting lug sleeve, improvement of the processing efficiency of the lifting lug sleeve, and provision of a new idea and method for the processing of the lifting lug sleeve.

[0023] 2. The invention can meet the processing of different distance special-shaped lifting lugs, and has wide application range. In addition, the method has low manufacturing cost, is convenient and fast to use, reduces production cost, and is particularly prominent in batch production. The above two features effectively improve production efficiency and greatly reduce production cost under the premise of effectively solving the difficult clamping of special-shaped lifting lugs.

[0024] 3. The invention can effectively ensure that the center of the workpiece coincides with the center of the clamp, and realize automatic centering of the clamping of the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of a clamping method for a lifting lug rope sleeve lathe;

[0026] Figure 2 is a structural schematic diagram of a clamping method for a lifting lug rope sleeve lathe;

[0027] Figure 3 is a structural schematic diagram of an adjusting pad in a clamping method for a lifting lug rope sleeve lathe;

[0028] Figure 4 is a structural schematic diagram of a connecting pin shaft in a clamping method for a lifting lug rope sleeve lathe;

[0029] Figure 5 is a structural schematic diagram of an adjusting screw in a clamping method for a lifting lug rope sleeve lathe.

[0030] In the figure: 1. clamping seat, 2. adjusting pad, 3. lifting lug rope sleeve, 4. connecting pin shaft, 5. connecting bolt, 6. adjusting screw a, 7. annular alignment surface, 8. adjusting screw b, 9. inner stop opening positioning surface, 10. positioning surface a, 11. positioning surface b, 12. turning hole. DETAILED DESCRIPTION

[0031] The invention will be described in detail below in combination with the drawings and specific embodiments:

[0032] A clamping tool for a lifting lug rope sleeve lathe according to the invention has the structure as shown in Figure 1As shown, the clamping end includes a clamping seat 1, which is in a cylindrical structure, and an annular alignment surface 7 is arranged on one end of the clamping seat 1. A connecting conversion end is fixedly connected to the same end of the clamping seat 1. The connecting conversion end is in a pair of oppositely arranged plate structures. A connecting pin hole is formed in the center of each plate structure. A connecting pin 4 is arranged in the two connecting pin holes. One connecting pin hole is located on the inner side of the plate structure and is provided with an inner stop positioning surface 9 along the edge thereof. The connecting pin 4 is located on the outer side of the plate structure and is provided with a connecting flange. A plurality of corresponding threaded holes are arranged on the outer side of the plate structure and the connecting flange around the center of the connecting pin hole. A connecting bolt 5 is arranged in each threaded hole. A plurality of threaded holes are arranged on the other plate structure around the center of the connecting pin hole. An adjusting screw a6 is arranged in each threaded hole.

[0033] As shown in Figure 1 and 2 , the plate structure of the connecting conversion end is provided with a connecting pin hole, which is machined at one time to ensure the coaxiality of the hole. One connecting pin hole is located on the inner side of the plate structure and is provided with an inner stop positioning surface 9 along the edge thereof. The inner stop positioning surface 9 contacts a positioning surface a10 during installation to ensure the center height dimension B of the ear loop sleeve 3. Six evenly distributed threaded holes are arranged on the outer side of the connecting pin hole around the center of the connecting pin hole. The connecting bolt 5 passes through the six connecting bolt holes of the connecting pin 4 and the six threaded holes on the outer side of the connecting pin hole to fix the connecting pin 4 and the connecting conversion end together. Six threaded holes are also arranged on the outer side of the other connecting pin hole around the center of the connecting pin hole. The adjusting screw a6 is arranged in the six threaded holes to press the ear loop sleeve 3 tightly in the clamp.

[0034] As shown in Figure 3 , the adjusting pad 2 adopts a stepped structure. The height h of the small end of the adjusting pad 2 is greater than the depth t of the inner stop positioning surface 9 on the clamping seat 1. The positioning surface a10 on the adjusting pad 2 is installed in the inner stop positioning surface 9. The positioning surface b11 contacts one side end surface of the ear loop sleeve 3. When machining ear loop sleeves 3 with different spacings, only different thicknesses of adjusting pads 2 with different sizes H need to be replaced to meet the machining of ear loop sleeves 3 with different spacings.

[0035] As shown in Figure 4 , the connecting pin 4 is provided in a flange type stepped structure. The large end surface of the stepped structure of the connecting pin 4 is in a flange structure and is provided with six connecting bolt holes for installing the adjusting screw a6 to fix the connecting pin 4. The outer circle of the connecting part of the connecting pin 4 is basically the same size as the inner hole of the ear loop of the ear loop sleeve 3 and the inner hole of the adjusting pad 2, and all adopt a clearance fit to ensure the coaxiality of the inner hole of the ear loop of the ear loop sleeve 3, the inner hole of the adjusting pad 2 and the outer circle of the connecting part of the connecting pin 4. The connecting pin 4 is provided with a radial hole 12 for fine adjustment of the position of the connecting pin 4.

[0036] As shown in Figure 5As shown, the end of the adjusting screw a6 and the adjusting screw b8 is provided with a ball head structure, the ball head on the adjusting screw a6 is in contact with the outer end surface of the lug rope sleeve 3 to limit the axial position of the lug rope sleeve 3, the ball head on the adjusting screw b8 is in contact with the left end surface of the lug rope sleeve 3 to limit the radial position of the lug rope sleeve 3, and high positioning accuracy of the lug rope sleeve 3 can be provided.

[0037] The application also has the following characteristics:

[0038] The annular alignment surface is arranged on the clamping seat, and during lathe machining, only the large outer circle of the clamping seat and the annular alignment surface need to be aligned, and then the outer conical surface of the lug rope sleeve can be machined.

[0039] The positioning stop is further arranged on the connecting conversion end, the adjusting pad is sleeved in the positioning stop, one end surface of the adjusting pad is matched with the positioning stop on the connecting conversion end, the other end surface of the adjusting pad is matched with and closely attached to one side end surface of the lug rope sleeve, the center height of the lug rope sleeve is ensured, and the lug rope sleeve is pressed tightly by the adjusting screw on the other side end surface.

[0040] The connecting pin shaft hole is further arranged on the connecting conversion end and is matched with the connecting pin shaft, and the connecting pin shaft is also in a matching relationship with the lug hole of the lug rope sleeve, so that the center of the lug hole of the connecting conversion end is consistent with the center of the hole of the lug rope sleeve.

[0041] The clamping seat is provided with two threaded holes at positions corresponding to the two ears of the lug rope sleeve, the adjusting screw b is arranged in the threaded hole, the left end of the lug rope sleeve is pressed tightly by the adjusting screw b, and the rotation freedom of the lug rope sleeve is limited.

[0042] The application further discloses a clamping method using the clamping tool.

[0043] Step 1, the thickness of the adjusting pad 2 required is calculated according to the distance B from the outer side of the lug rope sleeve 3 to the central axis, and the adjusting pad 2 of a corresponding specification is selected.

[0044] Step 2, the positioning surface a10 on the adjusting pad 2 is placed in the inner stop positioning surface 9, and the positioning surface a10 on the adjusting pad 2 and the inner stop positioning surface 9 are matched with a small gap.

[0045] Step 3, the lug rope sleeve 3 is hung and placed between the two plate structures, and the side surface of the lug rope sleeve 3 is in contact with the positioning surface b11 on the adjusting pad 2.

[0046] Step 4, the positions of the adjusting pad 2 and the lug rope sleeve 3 are finely adjusted so that the connecting pin shaft 4 can pass through the adjusting pad 2 and the lug rope sleeve 3 in sequence.

[0047] Step 5, fine-tune the position alignment of the connecting pin shaft 4 by rotating the hole 12, align the flange through hole and the connecting threaded hole on the connecting pin shaft 4, pass the connecting bolt 5 through the flange through hole on the connecting pin shaft 4 and screw into the connecting bolt hole of the plate-shaped structure, and tighten the connecting bolt 5;

[0048] Step 6, screw the adjusting screw a6 into the connecting bolt hole of the plate-shaped structure, tighten the adjusting screw a6, make the lifting lug rope sleeve 3 close to the positioning surface b11, then screw the adjusting screw b8 into the connecting bolt hole of the clamping seat 1, the ball head of the adjusting screw b8 presses the lifting lug rope sleeve 3, and the lifting lug rope sleeve 3 is fixed and pressed in the clamping seat 1;

[0049] Step 7, clamp the clamping seat 1 on the general lathe chuck, after aligning the large outer circle and the annular alignment surface 7 of the clamping seat 1, tighten the chuck jaw, ensure that the rotation center of the clamping seat 1 coincides with the rotation center of the lathe, and then the turning machining of the lifting lug rope sleeve 3 can be carried out.

[0050] The method of the present application uses the above-mentioned lathe clamp on the general lathe, and through the conversion design of the above-mentioned structure, the reference is effectively converted, the machining precision of the lifting lug rope sleeve is ensured, and the machining efficiency of the lifting lug special-shaped part is improved.

Claims

1. A clamping tool for a lug line sleeve lathe, characterized in that, The clamping end comprises a clamping seat (1) in a cylindrical structure, an annular alignment surface (7) is arranged on one end of the clamping seat (1), and a connecting conversion end is fixedly connected to the same end of the clamping seat (1); the connecting conversion end is a pair of oppositely arranged plate structures, a connecting pin shaft hole is formed in the center of each plate structure, a connecting pin shaft (4) is arranged in the connecting pin shaft holes, an inner stop opening positioning surface (9) is arranged on the inner side of one of the plate structures along the edge thereof, a connecting flange is arranged on the outer side of the plate structure, a plurality of corresponding threaded holes are arranged on the outer side of the plate structure and the connecting flange around the center of the connecting pin shaft hole, a connecting bolt (5) is arranged in each threaded hole, a plurality of threaded holes are arranged on the other plate structure around the center of the connecting pin shaft hole, and an adjusting screw a (6) is arranged in each threaded hole; The connecting pin shaft (4) is sleeved with an adjusting pad (2), and the adjusting pad (2) is provided with a positioning surface a (10) and a positioning surface b (11); the positioning surface a (10) is in contact with the inner stop opening positioning surface (9).

2. A hanger rope socket lathe holding tool according to claim 1, characterized in that, The adjusting pad (2) adopts a stepped structure.

3. A rope socket lathe tool as claimed in claim 2, wherein, A through turning hole (12) is formed in the end of the connecting pin shaft (4) which is not provided with the flange along the radial direction thereof.

4. A tool as claimed in claim 3, wherein the tool is a tool for a rope socket lathe for a lifting ear, characterised in that, Two threaded holes are formed in the clamping end of the clamping seat (1) at positions corresponding to the two ears of the lifting ear rope sleeve, and an adjusting screw b (8) is arranged in each threaded hole.

5. The clamping tool for a lathe with a lifting lug rope as described in claim 4, characterized in that, The end of the adjusting screw b (8) is provided in a ball head structure.

6. A rope socketing lathe tool as claimed in claim 5, wherein, The end of the adjusting screw a (6) is provided in a ball head structure.

7. The clamping method of the lifting ear rope sleeve lathe clamping tool according to claim 6 is implemented according to the following steps: Step 1: according to the distance B from the outer side of the lifting ear rope sleeve (3) to the center axis, the thickness of the required adjusting pad (2) is calculated, and the adjusting pad (2) of the corresponding specification is selected; Step 2: the positioning surface a (10) of the adjusting pad (2) is placed into the inner stop opening positioning surface (9), and the adjusting pad positioning surface a (10) and the inner stop opening positioning surface (9) are matched with a small gap; Step 3: the lifting ear rope sleeve (3) is hung and placed between the two plate structures, so that one side surface of the lifting ear rope sleeve (3) is in contact with the positioning surface b (11) on the adjusting pad (2); Step 4: the positions of the adjusting pad (2) and the lifting ear rope sleeve (3) are finely adjusted so that the connecting pin shaft (4) can pass through the adjusting pad (2) and the lifting ear rope sleeve (3) in sequence; Step 5: the position of the connecting pin shaft (4) is finely adjusted through the turning hole (12) so as to align the flange through hole on the connecting pin shaft (4) with the connecting threaded hole, the connecting bolt (5) is passed through the flange through hole on the connecting pin shaft (4) and screwed into the connecting bolt hole of the plate structure, and the connecting bolt (5) is tightened; Step 6: the adjusting screw a (6) is screwed into the connecting bolt hole of the plate structure, the adjusting screw a (6) is tightened, the lifting ear rope sleeve (3) is tightly attached to the positioning surface b (11), then the adjusting screw b (8) is screwed into the connecting bolt hole of the clamping seat (1), the ball head of the adjusting screw b (8) presses the lifting ear rope sleeve (3), and the lifting ear rope sleeve (3) is fixed and pressed in the clamping seat (1). Step 7, the clamping seat (1) is clamped on the general lathe chuck, after the big outer circle and the annular alignment surface (7) of the clamping seat (1) are aligned, the chuck is tightened, the rotation center of the clamping seat (1) is coincided with the rotation center of the lathe, at this time, the turning of the lifting lug rope sleeve (3) can be carried out.

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