Large-hole rolling cutter for welding box body

Abstract

The utility model discloses a large-hole rolling cutter for a welding box body, which comprises a cutter handle, a cutter body is arranged at the top of the cutter handle, a pair of rolling heads are symmetrically arranged on the cutter body, a size adjusting block is arranged between the rolling heads, and an adjusting pull plate is arranged on the size adjusting block. Due to the fact that the rolling cutter is used on the cutter, the problems of cutter vibration, poor roughness and the like generated when a common cutter is used for large hole machining are solved, the hole precision is improved, the fatigue life of the material surface is prolonged, the stress corrosion resistance and the like are improved, and the design and use requirements are met. Due to the fact that the reason that the conventional machining process for the large holes of the welding box cannot meet the design requirement is found out, and the defect existing in machining through a common cutter is overcome, experience accumulation and bedding are made for similar process innovation in the future, the precedent of the large hole machining process in the industry is broken through, the key process technology is mastered, and very positive significance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling equipment, in particular to a large-hole rolling cutter for a welding box. Background Art

[0002] At the power end of a reciprocating pump, any joints with relative rotation require bearing support. Rolling bearings are particularly important when transmitting large plunger forces, high power, and high pump speeds. Therefore, as the primary component of the power end, the bearing mounting area, and its installation accuracy, are crucial. This requires a particularly high degree of roughness at the mounting area to ensure normal and reliable pump operation.

[0003] In order to reduce bearing installation friction and wear and improve the working surface roughness, the rolling tool is used to apply pressure to the workpiece surface to cause the metal on the workpiece surface to plastically flow and fill the original remaining concave troughs. This method can improve the fatigue life and stress corrosion resistance of the material surface.

[0004] At present, in reciprocating pumps, the power end housing is gradually increasing in size, and the crankshaft support bearing is also increasing accordingly (the outer diameter of the bearing is about Φ400). Previously, the boring process was used to directly bore the hole with a tool on a boring machine. The disadvantage is that the bearing hole is large, the machine tool speed is low, and the processed hole roughness can only reach Ra6.3, which does not meet the design requirement (design requirement Ra 1.6).

[0005] However, with the widespread application of reciprocating pumps in various industries, traditional processing technology can no longer meet the requirements. Therefore, new technologies and new processes are urgently needed to meet market demand. Utility Model Content

[0006] In view of the above defects or shortcomings, the purpose of the present invention is to provide a large-hole rolling tool for welding box bodies.

[0007] In order to achieve the above objectives, the technical solution of the utility model is:

[0008] A large-hole rolling tool for welding a box body comprises: a tool handle, a tool body mounted on the top of the tool handle, a pair of rolling heads symmetrically mounted on the tool body, a replaceable adjustment pull plate for adjusting the distance between the rolling heads mounted between the rolling heads, pressure plates mounted on the rolling heads, size adjustment blocks mounted between the pressure plates, and the replaceable adjustment pull plate arranged below the size adjustment block.

[0009] The rolling head includes: a rolling head mounting body, a bearing is horizontally mounted on the end of the rolling head mounting body, and a positioning pin is vertically mounted on the end of the rolling head mounting body and passes through the rolling head mounting body and the bearing.

[0010] The end of the positioning pin is limited and fixed by a retaining ring.

[0011] The cutter body is provided with a slot for a rolling head mounting body, the rolling head mounting body is arranged in the slot, the pressure plate is pressed against the rolling head mounting body by a nut, and the pressure plate is fixed to the cutter body by screws.

[0012] The replaceable adjustment pull plate includes: a mounting body mounted between the rolling heads, an adjustment body mounted in the mounting body, an adjustment hole opened in the center of the adjustment body, and the size adjustment block mounted in the adjustment hole through an adjustment nut.

[0013] The installation body is provided with a wedge-shaped adjustment groove, and the outer wall of the adjustment body is matched with the wedge-shaped adjustment groove and is clamped and installed.

[0014] The size adjustment block is provided with an inner groove for adjusting the up and down movement of the body.

[0015] The size adjustment block is provided with an adjustment dial.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model provides a large-hole rolling tool for a welding box. The bearing on the rolling head presses against the surface of the inner hole, causing the surface metal to plastically flow and fill the original remaining concave troughs. This method can improve the fatigue life and stress corrosion resistance of the material surface, and can also improve the surface roughness of the inner hole.

[0018] The utility model provides a large-hole rolling tool for welding a box body. Since a rolling tool is used on the tool, problems such as tool chattering and poor roughness caused by general tools during large-hole processing are avoided, thereby improving the accuracy of the hole, improving the fatigue life and stress corrosion resistance of the material surface, etc., and meeting the design and use requirements. In addition, since the setting is provided, the reasons why the conventional processing technology for large holes in welding boxes cannot meet the design requirements and the defects of using ordinary tools for processing are found, experience accumulation and preparation are laid for similar process innovations in the future, breaking the precedent of large-hole processing technology in the industry, and mastering key process technologies, which has very positive significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the large hole rolling tool for welding box body of the utility model;

[0020] Figure 2 This is a top view of the large hole rolling tool for welding box body of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the cutter body of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the rolling head of the utility model;

[0023] Figure 5 This is a schematic diagram of the replaceable and adjustable pull plate structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the replaceable adjustment pull plate of the utility model in the adjustment state;

[0025] Figure 7 This is a schematic diagram of the structure of the adjustment block of the utility model;

[0026] Figure 8 It is a structural schematic diagram of the adjustment dial of the utility model.

[0027] In the figure, 1 is the cutter body; 2 is the pressure plate; 3 is the positioning pin; 4 is the rolling head; 5 is the adjustment block; 6 is the replaceable adjustment pull plate; 7 is the bearing; 8 is the retaining ring; 9 is the cutter handle; 11 is the slot; 41 is the rolling head mounting body; 51 is the adjustment nut; 52 is the adjustment dial; 61 is the mounting body; 62 is the adjustment body; 63 is the adjustment hole. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0029] like Figure 1-8 As shown, the utility model provides a large-hole rolling tool for welding box bodies, comprising: a tool handle 9, a tool body 1 is mounted on the top of the tool handle 9, a pair of rolling heads 4 are symmetrically mounted on the tool body 1, a replaceable adjustment pull plate 6 for adjusting the distance between the rolling heads 4 is mounted between the rolling heads 4, a pressure plate 2 is mounted on the rolling heads 4, a size adjustment block 5 is mounted between the pressure plates 2, and the replaceable adjustment pull plate 6 is arranged below the size adjustment block 5. Specifically, for installation and fixation, a pressure plate 2 is fixedly mounted on each rolling head 4 and fixed with the fixing bolts. After the size of the rolling head 4 is adjusted, it is locked with a locking bolt.

[0030] like Figure 4 As shown, the rolling head 4 includes: a rolling head mounting body 41, a bearing 7 is horizontally mounted on the end of the rolling head mounting body 41, and a positioning pin 3 is vertically mounted on the end of the rolling head mounting body 41, which passes through the rolling head mounting body 41 and the bearing 7. Preferably, the end of the positioning pin 3 is fixed by a retaining ring 8.

[0031] Furthermore, if Figure 3As shown, the cutter body 1 is provided with a slot 11 for a rolling head mounting body 41, the rolling head mounting body 41 is arranged in the slot 11, the pressure plate 2 is pressed into the rolling head mounting body 41 by the locking bolt, and the pressure plate 2 is fixed to the cutter body 1 by screws.

[0032] like Figure 5 、 6 As shown, the replaceable adjustment plate 6 comprises a mounting body 61 mounted between the rolling heads 4, an adjustment body 62 mounted within the mounting body 61, an adjustment hole 63 defined in the center of the adjustment body 62, and the size adjustment block 5 mounted within the adjustment hole 63 via an adjustment nut 51. The size adjustment block 5 is provided with an internal groove for the up and down movement of the adjustment body 62, and an adjustment dial 52 is provided on the size adjustment block 5. For example, to ensure compact installation and prevent loosening, a wedge-shaped through-hole is provided within the mounting body 61, and the outer wall of the adjustment body 62 is securely mounted in the wedge-shaped through-hole.

[0033] like Figure 6 As shown, in order to change the size of the rolling head 4 and adjust the size, the adjusting bolt 64 is used for adjustment. Two left and right wedge blocks are provided in the mounting body 61 and are arranged in the wedge-shaped adjustment groove. The outer wall of the adjustment body 62 is clamped and installed in the wedge-shaped adjustment groove. The position of the two wedge blocks can be adjusted up and down by using the thread to change the size of the outer shape of the mounting body 61. The size adjustment block 5 is provided with an inner groove for the up and down movement of the adjustment body 62.

[0034] The replaceable adjustment pull plate 6 is provided with an adjustment wedge for the distance of the rolling head 4. The replaceable adjustment pull plate 6 uses the wedge block to move up and down to change the outer size of the replacement adjustment pull plate 6, so that the size of the rolling head 4 changes. The wedge block is only used for fine-tuning in order to adjust the size of the hole rolled by the rolling head.

[0035] The working process of this utility model is:

[0036] Use the adjustment bolt 51 for adjusting the size of the tool, and according to the adjustment dial 52 on the adjustment block 5, turn the bolt every small grid (0.002mm) to adjust the size, then tighten the fixing bolt on the pressure plate 2 to lock the rolling head 4.

[0037] Install the tool handle 9 on the boring machine, use the small bearing outer circle to roll the reserved hole, and set the speed to 180 rpm.

[0038] The cutter body 1 rotates, the feed amount is 0.1mm / revolution, the hole is coated with engine oil, and the cutter body 1 moves back and forth to complete the rolling of the hole.

[0039] For those skilled in the art, it is obvious that the above-mentioned specific examples are only preferred embodiments of the present invention. Therefore, any improvements and changes that may be made by those skilled in the art to certain parts of the present invention still reflect the principles of the present invention and still achieve the purpose of the present invention, and all fall within the scope of protection of the present invention.

Claims

1. A large hole rolling tool for welding box, characterized in that: include: A knife handle (9) is provided with a knife body (1) mounted on the top of the knife handle (9), a pair of rolling heads (4) are symmetrically mounted on the knife body (1), a replaceable adjustment pull plate (6) for adjusting the distance between the rolling heads (4) is mounted between the rolling heads (4), a pressing plate (2) is mounted on the rolling heads (4), a size adjustment block (5) is mounted between the pressing plates (2), and the replaceable adjustment pull plate (6) is arranged below the size adjustment block (5).

2. The large hole rolling tool for welding box according to claim 1, characterized in that: The rolling head (4) comprises: a rolling head mounting body (41), a bearing (7) being horizontally mounted on the end of the rolling head mounting body (41), and a positioning pin (3) passing through the rolling head mounting body (41) and the bearing (7) being vertically mounted on the end of the rolling head mounting body (41).

3. The large hole rolling tool for welding box according to claim 2, characterized in that: The end of the positioning pin (3) is fixed by a retaining ring (8).

4. The large hole rolling tool for welding box according to claim 3, characterized in that: The cutter body (1) is provided with a slot (11) for a rolling head mounting body (41); the rolling head mounting body (41) is arranged in the slot (11); the pressing plate (2) is pressed against the rolling head mounting body (41) by a nut; and the pressing plate (2) is fixedly mounted on the cutter body (1) by screws.

5. The large hole rolling tool for welding box according to claim 1, characterized in that: The replaceable adjustment pull plate (6) comprises: a mounting body (61) mounted between the rolling heads (4); an adjustment body (62) mounted in the mounting body (61); an adjustment hole (63) formed at the center of the adjustment body (62); and the size adjustment block (5) mounted in the adjustment hole (63) via an adjustment nut (51).

6. The large hole rolling tool for welding box according to claim 5, characterized in that: A wedge-shaped adjustment groove is provided in the installation body (61), and the outer wall of the adjustment body (62) is matched with the wedge-shaped adjustment groove for clamping and installation.

7. The large hole rolling tool for welding box according to claim 5, characterized in that: An inner groove for adjusting the body (62) to move up and down is provided in the size adjustment block (5).

8. The large hole rolling tool for welding box according to claim 7, characterized in that: The size adjustment block (5) is provided with an adjustment dial (52).

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