Grinding wheel clamp device for grinding and widening inner circle of steel pipe

Abstract

The steel pipe inner circle grinding and widening grinding wheel clamp device comprises a first clamp and a second clamp, the first clamp is installed at one end of a grinding rod main shaft, the first clamp is sleeved with a grinding wheel, the second clamp is installed on the first clamp, an abutting plate is installed on the second clamp in a sliding mode, and the abutting plate abuts against one side face of the grinding wheel. An adjusting piece is arranged on the second clamp; the grinding wheel is installed on the first clamp, then the second clamp is installed on the first clamp, the abutting plate on the second clamp abuts against and limits the grinding wheel at the moment, when grinding wheels with different widths are installed, the adjusting piece is rotated to drive the abutting plate to move in the direction towards or away from the grinding wheel, and the position of the abutting plate on the second clamp is adjusted; the grinding wheel clamping device has the effect of being suitable for clamping grinding wheels with different widths.

Description

Technical Field

[0001] This application relates to the field of steel pipe inner circle grinding devices, and in particular to a grinding wheel clamping device for widening the inner circle of steel pipes. Background Technology

[0002] The steel pipe internal grinding machine is a special equipment used to process the inner wall of steel pipes. Its main function is to remove burrs, oxide layers, welding slag and other defects from the inner wall to improve the smoothness and dimensional accuracy of the inner surface. The equipment mainly consists of a sliding trolley, guide rails and roller assembly. The trolley is equipped with a rotating shaft, grinding wheel and drive system. During operation, the steel pipe is placed on the roller assembly and rotates. The trolley moves along the guide rail to feed the grinding wheel into the steel pipe. The drive system drives the rotating shaft to rotate and rotate the grinding wheel to perform grinding. The movement of the trolley synchronously feeds the grinding wheel. The grinding wheel is usually mounted on the rotating shaft by a clamping device.

[0003] In related technologies, please refer to the utility model patent with announcement number CN2917943Y, which discloses a high-power rough grinding mill wheel clamping device, including a rotating shaft and a grinding wheel sleeved on the rotating shaft. The rotating shaft with the grinding wheel is conical, and there is an axially mating I-beam chuck on the conical shaft. The grinding wheel is clamped between the two surfaces of the mating I-beam chuck, which can meet the requirements of high-speed, high-power, and large-volume grinding on the surface of high-hardness cemented carbide steel.

[0004] Existing chucks can only hold grinding wheels of a specific width. When grinding operations are required using grinding wheels of different widths or flap wheels, the appropriate chuck must be replaced before the operation can be performed. Changing grinding wheels is inconvenient and inefficient. Utility Model Content

[0005] To address the problem that existing chucks cannot accommodate grinding wheels of different widths, this application provides a grinding wheel clamping device for widening the inner circle of a steel pipe through grinding.

[0006] The grinding wheel clamping device for widening the inner circle of steel pipes provided in this application adopts the following technical solution:

[0007] A grinding wheel clamping device for widening the inner circle of a steel pipe includes a first clamp and a second clamp. The first clamp is installed at one end of the grinding rod spindle, and a grinding wheel is sleeved on the first clamp. The second clamp is detachably installed on the first clamp, and the grinding wheel is located between the first clamp and the second clamp. An abutment plate is slidably installed on the second clamp in a direction toward or away from the grinding wheel, and the abutment plate abuts against one side of the grinding wheel. The second clamp is provided with an adjusting member for driving the abutment plate to slide.

[0008] By adopting the above technical solution, the grinding wheel is installed on the first clamp, and then the second clamp is installed on the first clamp. At this time, the abutment plate on the second clamp abuts and limits the grinding wheel. When grinding wheels of different widths are installed, rotating the adjusting component drives the abutment plate to move in the direction toward or away from the grinding wheel, adjusting the position of the abutment plate on the second clamp. The adjustment operation is convenient and suitable for clamping grinding wheels of different widths.

[0009] Optionally, the adjusting component includes a screw and a sleeve. The screw is rotatably mounted on the second clamp and is perpendicular to the plane of the grinding wheel. The sleeve is threaded onto the outside of the screw and is coaxially distributed. The sleeve is slidably mounted on the second clamp and connected to one side of the abutment plate. The second clamp is provided with a rotating component for driving the screw to rotate.

[0010] By adopting the above technical solution, the screw rotation drives the sleeve rod to move, and the sleeve rod pushes the abutment plate at one end to abut against one side of the grinding wheel, thereby tightening and limiting the grinding wheel. The position of the abutment plate can be adjusted by moving the sleeve rod driven by the screw, making the operation convenient.

[0011] Optionally, the rotating component includes a worm gear and a worm. The worm gear is rotatably mounted on the second clamp and coaxially connected to the screw. The worm is rotatably mounted on the second clamp and meshes with one side of the worm gear. One end of the worm is located outside the second clamp.

[0012] By adopting the above technical solution, the worm gear drives the worm wheel to rotate, which in turn drives the screw to rotate and then drives the sleeve rod to move. Adjusting the position of the sleeve rod is convenient, and the speed reduction adjustment effect of the worm gear is good. At the same time, the worm gear is self-locking, which makes it easy to limit the position of the abutment plate.

[0013] Optionally, a guide rod is slidably mounted on the second clamp, one end of the guide rod is connected to one side of the abutment plate, a limit block is provided at the end of the guide rod away from the guide rod, a limit groove is opened on the second clamp, and the limit block is located at the limit groove and slidably connected to the second clamp.

[0014] By adopting the above technical solution, when the contact plate moves, the guide rod slides and guides, and the limiting block limits the movement of the guide rod.

[0015] Optionally, the first fixture is provided with a positioning groove, and the second fixture is provided with a positioning strip, the positioning strip being embedded in the first fixture through the positioning groove.

[0016] By adopting the above technical solution, during installation, the positioning strip of the second clamp is embedded in the positioning groove of the first clamp, thereby completing the mutual positioning between the first clamp and the second clamp.

[0017] Optionally, the grinding rod spindle is provided with a tapered section, the first clamp is sleeved on the tapered section of the grinding rod spindle, and a locking nut is threaded on the end of the grinding rod spindle located at the tapered section. A washer is provided on the side of the locking nut facing the first clamp, and the washer abuts against one side of the first clamp.

[0018] By adopting the above technical solution, the locking nut is rotated until the washer and the first clamp are pressed together, which not only distributes the stress evenly but also enhances the friction.

[0019] Optionally, a fixing bolt is threaded onto the second clamp, and a mounting hole is provided on the first clamp, through which the fixing bolt is threadedly connected to the first clamp.

[0020] By adopting the above technical solution, during installation, the fixing bolts are rotated to the mounting hole of the first clamp to lock and fix the first clamp and the second clamp together, making the installation operation convenient.

[0021] Optionally, the second clamp is provided with a counterweight slot, and a counterweight block can be detachably installed on the second clamp at the counterweight slot.

[0022] By adopting the above technical solution, the second clamp is balanced by installing counterweights to counteract the centrifugal force caused by uneven weight distribution during rotation.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Rotating the adjusting component causes the abutment plate to move toward or away from the grinding wheel, adjusting the position of the abutment plate on the second clamp, which is suitable for clamping grinding wheels of different widths;

[0025] 2. The speed reduction adjustment effect through the worm gear is good, and the worm gear is self-locking, which makes it convenient to limit the position of the abutment plate;

[0026] 3. By installing counterweights, the second fixture is balanced as a whole to counteract the centrifugal force caused by uneven weight distribution during rotation. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of this application.

[0028] Figure 2 This is a cross-sectional view along the axis of the grinding rod spindle of this application.

[0029] Figure 3 This is an exploded structural diagram of the first clamp, the second clamp, and the locking nut on the grinding rod spindle of this application.

[0030] Figure 4 This is an enlarged sectional view of Part A of this application.

[0031] Figure 5 This is an enlarged sectional view of Part B of this application.

[0032] Figure 6 This is an enlarged cross-sectional structural diagram of part C of this application, mainly used to show the positional relationship between the adjusting component and the rotating component.

[0033] Those skilled in the art will understand that the elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be enlarged relative to other elements to aid in understanding the embodiments of the invention.

[0034] Reference numerals: 1. Connecting rod; 2. Grinding rod spindle; 21. Tapered section; 211. Guide bar; 22. Connecting section; 23. Locking nut; 24. Washer; 3. First clamp; 31. Annular flange; 311. Positioning block; 32. Guide groove; 33. Positioning groove; 34. Mounting hole; 4. Grinding wheel; 41. Groove; 5. Second clamp; 51. Positioning bar; 52. Fixing bolt; 53. Guide rod; 54. Limiting block; 55. Limiting groove; 56. Rotating groove; 57. Counterweight groove; 58. Counterweight block; 6. Abutment plate; 7. Adjusting component; 71. Screw; 72. Sleeve rod; 8. Rotating component; 81. Worm gear; 82. Worm. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] This application discloses a grinding wheel clamping device for widening the inner circle of a steel pipe, referring to... Figure 1 and Figure 2 The assembly includes a first clamp 3 and a second clamp 5. A grinding rod spindle 2 is coaxially rotatably mounted on the connecting rod 1 of the trolley. The end of the grinding rod spindle 2 facing away from the trolley is located outside the connecting rod 1. The first clamp 3 is installed at the end of the grinding rod spindle 2 facing away from the trolley. The first clamp 3 is in the shape of a disc ring and is distributed perpendicularly to the grinding rod spindle 2. An annular retaining edge 31 is provided on the side of the first clamp 3 facing the connecting rod 1. A grinding wheel 4 is sleeved on the first clamp 3. One side of the grinding wheel 4 is in contact with one side of the annular retaining edge 31. A positioning block 311 is provided on the annular retaining edge 31. A groove 41 is provided on the grinding wheel 4. During installation, the positioning block 311 is embedded in the groove 41 of the grinding wheel 4 to axially position the grinding wheel 4.

[0037] Reference Figure 1 and Figure 2The second clamp 5 is detachably installed on the side of the first clamp 3 away from the connecting rod 1. The grinding wheel 4 is located between the first clamp 3 and the second clamp 5. The grinding wheel 4 is installed on the first clamp 3, and then the second clamp 5 is installed on the first clamp 3. At this time, the abutment plate 6 on the second clamp 5 abuts and limits the grinding wheel 4.

[0038] Reference Figure 2 and Figure 3 A contact plate 6 is slidably mounted on the second clamp 5 along the axis of the grinding rod spindle 2. The contact plate 6 abuts against the side of the grinding wheel 4 away from the annular flange 31. The second clamp 5 is provided with an adjusting element 7 for driving the contact plate 6 to slide. When grinding wheels 4 of different widths are installed, rotating the adjusting element 7 drives the contact plate 6 to move toward or away from the grinding wheel 4, adjusting the position of the contact plate 6 on the second clamp 5. This is suitable for clamping grinding wheels 4 or flap wheels of different widths.

[0039] Reference Figure 2 and Figure 3 A tapered section 21 is provided on the grinding rod spindle 2 at the end opposite to the trolley. The first clamp 3 is sleeved on the tapered section 21 of the grinding rod spindle 2. A guide bar 211 is provided on the tapered section 21 along the inclined direction of the tapered section 21. A connecting section 22 is provided at the end of the tapered section 21 of the grinding rod spindle 2. A guide groove 32 is provided on the inner side wall of the first clamp 3. During installation, the first clamp 3 is installed on the grinding rod spindle 2 along the tapered section 21. The guide bar 211 is embedded in the guide groove 32 to axially position the first clamp 3. A locking nut 23 is threaded on the connecting section 22. An annular washer 24 is provided on the side of the locking nut 23 facing the first clamp 3. The washer 24 abuts against the side of the first clamp 3 opposite to the connecting rod 1. Rotate the locking nut 23 until the washer 24 is pressed against the first clamp 3, push the first clamp 3 against the tapered section 21, and then fix the first clamp 3. While the stress is evenly distributed, the friction is enhanced.

[0040] Reference Figure 3 The second clamp 5 is fitted onto the side of the first clamp 3 away from the connecting rod 1. A positioning groove 33 is provided on one side of the first clamp 3. Four positioning grooves 33 are provided along the circumferential direction of the first clamp 3 and are evenly spaced. A positioning strip 51 is provided on the second clamp 5. During installation, the positioning strip 51 of the second clamp 5 is embedded in the positioning groove 33 of the first clamp 3 to complete the mutual positioning between the first clamp 3 and the second clamp 5.

[0041] Reference Figure 2 and Figure 3The second clamp 5 is threaded with fixing bolts 52. The fixing bolts 52 are distributed along the axis of the grinding rod spindle 2. There are two fixing bolts 52, which are symmetrically distributed about the grinding rod spindle 2. The first clamp 3 has a mounting hole 34 on the side away from the connecting rod 1. During installation, the fixing bolts 52 are rotated to the mounting hole 34 of the first clamp 3 to lock and fix the first clamp 3 and the second clamp 5. The installation operation is convenient.

[0042] Reference Figure 2 and Figure 4 The abutment plates 6 are arranged in a ring shape and are attached to the side of the grinding wheel 4 opposite to the annular retaining edge 31. A guide rod 53 is slidably mounted on the second clamp 5. The guide rod 53 is parallel to the grinding rod spindle 2. One end of the guide rod 53 is connected to one side of the abutment plate 6, and a limit block 54 is provided at the end of the guide rod 53 opposite to the abutment plate 6. A limit groove 55 is provided on the second clamp 5, and the limit block 54 is located at the limit groove 55 and slidably connected to the second clamp 5. When the abutment plate 6 moves, the guide rod 53 slides and is guided, and the limit block 54 limits the movement of the guide rod 53.

[0043] Reference Figure 5 and Figure 6 The adjusting component 7 includes a screw 71 and a sleeve 72. The second clamp 5 is provided with a rotating groove 56. One end of the screw 71 is rotatably installed in the rotating groove 56 of the second clamp 5. The screw 71 and the plane where the grinding wheel 4 is located are perpendicular to each other. The sleeve 72 is threaded onto the outside of the screw 71 and is coaxially distributed. The sleeve 72 is slidably installed on the second clamp 5 and connected to one side of the abutment plate 6. The second clamp 5 is provided with a rotating component 8, which includes a worm gear 81 and a worm 82. The worm gear 81 is rotatably installed in the rotating groove 56 of the second clamp 5 and is coaxially fixedly connected to the screw 71. The worm 82 is rotatably installed on the second clamp 5 and meshes with one side of the worm gear 81. One end of the worm 82 is located on the outside of the second clamp 5.

[0044] Rotating the worm gear 82 drives the worm wheel 81 to rotate, which in turn drives the screw 71 to rotate. The rotation of the screw 71 causes the sleeve rod 72 to move, and the sleeve rod 72 pushes the abutment plate 6 at one end to abut against one side of the grinding wheel 4, thus tightening and limiting the grinding wheel 4. The deceleration adjustment effect of the worm gear 81 and worm 82 is good. At the same time, the worm gear 81 and worm 82 are self-locking, which makes it easy to limit the position of the abutment plate 6.

[0045] Reference Figure 4 The second clamp 5 has a counterweight groove 57 on the side opposite to the adjusting member 7. A counterweight block 58 is detachably installed on the second clamp 5 at the counterweight groove 57 by mounting bolts. By installing the counterweight block 58, the second clamp 5 is balanced as a whole, which counteracts the centrifugal force generated by uneven weight during rotation.

[0046] The implementation principle of the grinding wheel clamp device for widening the inner circle of a steel pipe according to the embodiment of this application is as follows: During installation, the first clamp 3 is first placed on one side of the tapered section 21 of the grinding rod spindle 2, and the locking nut 23 is rotated to position the first clamp 3. At this time, the grinding wheel 4 is installed on the first clamp 3 and positioned. Then, the second clamp 5 is installed on one side of the first clamp 3 and positioned. At this time, the second clamp 5 is locked by the fixing bolt 52. The worm gear 82 is rotated to drive the worm wheel 81 to rotate, which in turn drives the screw 71 to rotate. The screw 71 pushes the sleeve 72 to move the abutment plate 6 to abut against one side of the grinding wheel 4, thus completing the installation of the grinding wheel 4.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grinding wheel clamp device for inner circle grinding and widening of a steel pipe, comprising a first clamp (3) and a second clamp (5), the first clamp (3) is installed at one end of a grinding rod main shaft (2), a grinding wheel (4) is sleeved on the first clamp (3), characterized in that: The second clamp (5) is detachably mounted on the first clamp (3), the grinding wheel (4) is located between the first clamp (3) and the second clamp (5), the abutting plate (6) is slidably mounted on the second clamp (5) in the direction towards or away from the grinding wheel (4), the abutting plate (6) abuts with one side of the grinding wheel (4), and the second clamp (5) is provided with an adjusting part (7) for driving the abutting plate (6) to slide.

2. The grinding wheel clamp apparatus for inside diameter regrinding and widening of a steel pipe according to claim 1, wherein: The adjusting part (7) comprises a screw rod (71) and a sleeve rod (72), the screw rod (71) is rotatably mounted on the second clamp (5), the screw rod (71) is perpendicular to the plane where the grinding wheel (4) is located, the sleeve rod (72) is coaxially distributed and threaded on the outer side of the screw rod (71), the sleeve rod (72) is slidably mounted on the second clamp (5) and connected with one side of the abutting plate (6), and the second clamp (5) is provided with a rotating part (8) for driving the screw rod (71) to rotate.

3. The grinding wheel clamp apparatus for inside diameter regrinding and widening of a steel pipe according to claim 2, wherein: The rotating part (8) comprises a worm wheel (81) and a worm (82), the worm wheel (81) is rotatably mounted on the second clamp (5) and coaxially connected with the screw rod (71), the worm (82) is rotatably mounted on the second clamp (5) and meshed with one side of the worm wheel (81), and one end of the worm (82) is located outside the second clamp (5).

4. The grinding wheel clamp apparatus for inside diameter regrinding and widening of a steel pipe according to claim 1, wherein: The second clamp (5) is slidably mounted with a guide rod (53), one end of the guide rod (53) is connected with one side of the abutting plate (6), a limiting block (54) is arranged on the end of the guide rod (53) away from the guide rod (53), a limiting groove (55) is formed in the second clamp (5), and the limiting block (54) is slidably connected with the second clamp (5) at the limiting groove (55).

5. The grinding wheel clamp apparatus for inside diameter regrinding and widening of a steel pipe according to claim 1, wherein: The first clamp (3) is provided with a positioning groove (33), and the second clamp (5) is provided with a positioning strip (51), the positioning strip (51) is embedded in the first clamp (3) through the positioning groove (33).

6. The grinding wheel clamp apparatus for inside diameter regrinding and widening of a steel pipe according to claim 1, wherein: The grinding rod spindle (2) is provided with a tapered section (21), the first clamp (3) is sleeved on the tapered section (21) of the grinding rod spindle (2), the end of the grinding rod spindle (2) located at the tapered section (21) is threaded with a locking nut (23), the locking nut (23) is provided with a gasket (24) on the side facing the first clamp (3), and the gasket (24) abuts with one side of the first clamp (3).

7. The grinding wheel clamp apparatus for inside diameter regrinding and widening of a steel pipe according to claim 1, wherein: The second clamp (5) is threaded with a fixing bolt (52), the first clamp (3) is provided with a mounting hole (34), and the fixing bolt (52) is threaded with the first clamp (3) through the mounting hole (34).

8. The grinding wheel clamp apparatus for inside diameter regrinding and widening of a steel pipe according to claim 1, wherein: The second clamp (5) is provided with a counterweight groove (57), and the second clamp (5) is detachably mounted with a counterweight block (58) at the counterweight groove (57).

Images