A super-large aperture replaceable rough and fine boring integrated device

Abstract

This utility model relates to an ultra-large diameter interchangeable roughing and finishing boring integrated device that can realize roughing and finishing of ultra-large diameter inner holes of different specifications. It includes a roughing and finishing boring body, a tool body connecting shank, a keyway box, a finishing boring tool box, a finishing boring cover, a roughing boring tool head, and a wooden guide key. These seven parts are assembled using screws, T-bolts, washers, and nuts. The wooden guide key is installed in the keyway box 1, and the roughing boring tool head's square groove is fitted with... Insert the rough boring tool, adjust the dimensions, and tighten the rough boring tool with screws. After adjusting the dimensions, install the finish boring tool into the tool slot of the finish boring tool box. Connect this device to the tool holder. The spindle rotates, and the tool holder drives the integrated rough and finish boring device to make linear motion, realizing one-time clamping and machining of the inner hole rough and finish boring. The keyway box, finish boring cover, and finish boring tool box can be replaced according to the hole diameter, so as to perform rough and finish boring of inner holes with different diameters.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology, specifically relating to an ultra-large diameter interchangeable rough and fine boring integrated device that can realize rough and fine boring of ultra-large diameter inner holes of different specifications. Background Technology

[0002] Currently, the finishing of inner holes for cylindrical parts in China typically involves rough and finish boring the inner hole, leaving a 0.2–0.3 mm allowance, followed by honing. To improve production efficiency and ensure the final dimensions and geometric tolerances of the inner hole, high requirements are placed on the roundness and straightness of the inner hole before finish boring. To further enhance efficiency, rough boring and finish boring are often performed in a single setup. However, to save manufacturing costs, a device integrating rough and finish boring of the inner hole needs to be designed for production, achieving low cost, high efficiency, and ease of manufacturing. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an ultra-large aperture interchangeable roughing and finishing boring integrated device that can save device manufacturing costs and improve production efficiency.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A large-diameter interchangeable roughing and finishing boring integrated device includes a roughing and finishing boring body, a tool body connecting shank connected to a tool holder and installed on one end of the roughing and finishing boring body by threads and screws, a roughing boring tool head, a finishing boring tool box, and a finishing boring pressure cover installed on the other end of the roughing and finishing boring body by screws, T-bolts, washers, and nuts.

[0006] The roughing and finishing boring body is assembled and welded together from a plug, a body, and a baffle. Specifically, the body is made of seamless steel pipe, the plug is welded to one side of the body, a baffle is welded inside the body, and at least four through slots for mounting keyway boxes are machined on the body. The keyway boxes are installed and fixed on the body by threaded holes symmetrically machined on both sides of the through slots and screws.

[0007] A slot for mounting a precision boring tool box is provided on the other side of the main body. This slot is a through slot with threaded holes machined inside. The precision boring tool box is connected to the slot by screws. A precision boring cover is fixed to the precision boring tool box by screws. The precision boring cover has slots and T-bolt slots at both ends that mate with the roughing boring tool head. The roughing boring tool head is fixed in the slots machined at both ends of the precision boring cover by T-bolts and T-bolt slots. A threaded hole for lifting and a threaded hole for pressing and mounting the precision boring tool are machined in the center of the precision boring cover. Screw through holes for connecting the precision boring tool box are machined on both sides of the center. The two ends of the precision boring cover are machined into arcs that match the arcs of the precision boring tool box.

[0008] A baffle is installed and welded in the inner hole of the body. The baffle, the inner hole of the body, the plug, the tool body connecting shank and the tool bar form a closed cavity for storing cutting fluid. A tool body connecting shank mounting hole is opened on the plug. The tool body connecting shank is installed in the tool body connecting shank mounting hole by a tool body connecting shank screw.

[0009] A positioning protrusion is machined on the rough boring head, with T-bolt through holes symmetrically machined on both sides. The rough boring head is installed and secured in the grooves machined at both ends of the finish boring cap using T-bolts and T-bolt slots. The protrusion of the rough boring head mates with the groove of the finish boring cap, and the two are fixed together by T-bolts, washers, and nuts. Two tool square grooves are machined on the rough boring head, with the upper surface of the tool square groove 1mm higher than the center line. A threaded hole is machined in the center of the groove. The rough boring tool is inserted into the tool square groove and secured with screws. One side of the rough boring head is machined into an arc. After the rough boring head is installed in the finish boring cap, this arc is lower than the arc of the finish boring cap to prevent interference with the inner hole during rotation.

[0010] The two ends of the precision boring tool holder are machined into arcs to facilitate rotation within the inner hole of the part; the width and thickness of the precision boring tool holder ensure that after the precision boring tool holder is installed in the tool holder slot of the roughing and precision boring body, the precision boring tool holder is lower than the upper plane of the tool holder slot, and the assembly gap is preferably controlled within 0.1mm.

[0011] The keyway box is machined with a wooden guide keyway. The two ends of the keyway are not connected, and 20mm is usually left unmachined. This keyway is used to install the wooden guide key. Screw holes are machined on both sides of the keyway. A positioning block and a positioning arc are machined below to fit with the outer circle of the roughing and finishing boring machine and the keyway. The height of the positioning block should have a gap with the depth of the keyway of the roughing and finishing boring machine to facilitate a tight fit between the arc and the outer circle of the roughing and finishing boring machine. The width of the keyway should have an interference fit of 1-2mm with the wooden guide key to facilitate the expansion and tightening of the wooden guide key after soaking.

[0012] The tool body connecting shank has two positioning stops and square threads. One end is connected to the roughing and finishing boring body, and the other end is connected to the tool holder. The tool body connecting shank also has a threaded hole, through which the tool body connecting shank is fixed to the plug.

[0013] A roughing tool is installed inside the roughing tool head, and a finishing tool is installed in the tool slot of the finishing tool box. Two water outlet holes are machined between the baffle and the plug on the roughing and finishing boring body. Cutting fluid is welded to the two oil pipes on the roughing and finishing boring tool heads according to their positions.

[0014] The positive effects of this utility model's technical solution are as follows: it is easy to select materials, can be manufactured using thick-walled seamless pipes and steel plates, and employs welding and screw connections, resulting in a simple structure, convenient and quick manufacturing, low manufacturing cost, and the ability to process inner holes of different diameters by replacing some parts. Therefore, this utility model has the advantages of simple structure, convenient manufacturing, and low manufacturing cost. Attached Figure Description

[0015] Figure 1 This is the main structural view of the present invention.

[0016] Figure 2 This is a left sectional view of the present invention.

[0017] Figure 3 This is a front view of the roughing and finishing boring body of this utility model.

[0018] Figure 4 This is a cross-sectional view (AA) of the roughing and finishing boring body of this utility model.

[0019] Figure 5 This is a front sectional view of the tool body connecting handle in an ultra-large diameter interchangeable roughing and finishing boring integrated device of this utility model.

[0020] Figure 6 This is a partial enlarged view of the square thread of the tool body connecting shank in an ultra-large diameter interchangeable roughing and finishing boring integrated device of this utility model.

[0021] Figure 7 This is a right-section view of the fine boring cap in an ultra-large diameter replaceable rough and fine boring integrated device of this utility model.

[0022] Figure 8 This is a front view of the fine boring cap in an ultra-large aperture replaceable rough and fine boring integrated device of this utility model.

[0023] Figure 9 This is a top sectional view of the fine boring cap in an ultra-large diameter replaceable rough and fine boring integrated device of this utility model.

[0024] Figure 10 This is a front sectional view of the fine boring tool box in an ultra-large aperture replaceable roughing and fine boring integrated device of this utility model.

[0025] Figure 11 This is a left view of the fine boring tool box in an ultra-large aperture replaceable roughing and fine boring integrated device of this utility model.

[0026] Figure 12 This is a front sectional view of the keyway box in an ultra-large aperture replaceable roughing and finishing boring integrated device of this utility model.

[0027] Figure 13 This is a left sectional view of the keyway box in an ultra-large diameter replaceable roughing and finishing boring integrated device of this utility model.

[0028] Figure 14 This is a top view of the keyway box in an ultra-large aperture replaceable roughing and finishing boring integrated device of this utility model.

[0029] Figure 15 This is a front view of the roughing tool head in an ultra-large diameter replaceable roughing and finishing boring integrated device of this utility model.

[0030] Figure 16 This is a left view of the roughing tool head in an ultra-large diameter replaceable roughing and finishing boring integrated device of this utility model.

[0031] The following are labeled in the diagram: 1. Keyway box; 2. Wooden guide key; 3. Roughing and finishing boring body; 4. Tool body connecting shank; 5. Tool body connecting shank screw; 6. Water outlet; 7. Finishing boring tool box screw; 8. Finishing boring cap screw (hex socket screw); 9. T-bolt; 10. Roughing boring tool head; 11. Finishing boring cap; 12. Finishing boring tool box; 13. Body; 14. Plug; 15. Baffle. Detailed Implementation

[0032] like Figure 1 , 2 As shown, this utility model discloses an ultra-large diameter interchangeable roughing and finishing boring integrated device, including a roughing and finishing boring body 3, a tool connecting handle 4 installed on the roughing and finishing boring body 3 by square thread and screws, a roughing boring tool head 10, a finishing boring tool box 12, a finishing boring pressure cover 11, a keyway box 1, and a wooden guide key 2 installed on the roughing and finishing boring body 3 by screws, T-bolts, washers, and nuts.

[0033] like Figure 1 , 2 As shown in Figures 3 and 4, an ultra-large diameter interchangeable roughing and finishing boring integrated device includes a roughing and finishing boring body 3, a tool connecting handle 4 connected to the tool holder and installed on one end of the roughing and finishing boring body 3 by square thread and screws, a roughing boring tool head 10 installed on the other end of the roughing and finishing boring body 3 by screws, T-bolts, washers and nuts 9, a finishing boring tool box 12, and a finishing boring cover 11.

[0034] The roughing and finishing boring body 3 is assembled and welded together from a plug 14, a body 13, and a baffle 15. Specifically, the body 13 is made of seamless steel pipe, the plug 14 is welded to one side port of the body 13, the baffle 15 is welded inside the body 13, and at least four through slots for mounting the keyway box 1 are machined on the body 13. The keyway (1) is installed and fixed on the body 13 by threaded holes symmetrically machined on both sides of the through slot and screws.

[0035] A slot for mounting a precision boring tool holder 12 is provided on the other side of the main body 13. This slot is a through slot with threaded holes machined inside. The precision boring tool holder 12 is mounted and connected by precision boring tool holder screws 7. A precision boring cover 11 is mounted and fixed on the precision boring tool holder 12 by precision boring cover screws 8. The precision boring cover 11 has slots and T-bolt slots at both ends that mate with the rough boring tool head 10. The rough boring tool head 10 is mounted and secured in the slots machined at both ends of the precision boring cover by T-bolts and T-bolt slots. The precision boring cover 10 has threaded holes for lifting and threaded holes for pressing and mounting the precision boring tool at its center. Screw through holes for connecting the precision boring tool holder 12 are machined on both sides of the center. The two ends of the precision boring cover 11 are machined into arcs that are consistent with the arcs of the precision boring tool holder.

[0036] A baffle 15 is installed and welded in the inner hole of the main body. The baffle 15, the inner hole of the main body, the plug 14, the tool body connecting handle 4 and the tool bar form a closed cavity for storing cutting fluid. A tool body connecting handle mounting hole is opened on the plug 14. The tool body connecting handle 4 is installed in the tool body connecting handle mounting hole by a tool body connecting handle screw 5.

[0037] A positioning protrusion is machined on the rough boring head 10, and T-bolt through holes are symmetrically machined on both sides of it. The rough boring head 10 is installed and fixed in the grooves machined at both ends of the finish boring cover by T-bolts 9 and T-bolt slots. The protrusion of the rough boring head 10 mates with the groove of the finish boring cover 11, and the two are fixed by T-bolts, washers, and nuts. Two tool square grooves are machined on the rough boring head 10. The upper plane of the tool square groove is 1mm higher than the center line. A threaded hole is machined in the center of the groove. The rough boring tool is installed into the tool square groove and fixed with screws. One side of the rough boring head is machined into an arc. After the rough boring head is installed into the finish boring cover, this arc is lower than the arc of the finish boring cover to prevent interference of the inner hole during rotation.

[0038] like Figure 3 , 4 As shown, the roughing and finishing boring body 3 is assembled and welded from a body 13, a plug 14, and a baffle 15. The body 13 has four through slots for mounting keyway boxes 1. The clearance between the keyway box 1 and the slot is preferably controlled between 0.1mm and 0.2mm. Threaded holes are symmetrically machined on both sides of the slot, and the keyway box 1 is fixed in the slot using hexagonal screws. The body 13 also has a through slot for mounting a finishing boring tool box 12. This slot has a clearance controlled within 0.1mm. Threaded holes are machined in the slot, and the finishing boring tool box 12 is fixed in the slot using hexagonal screws. A baffle 15 is installed in the inner hole of the body 13, forming a closed cavity with the tool holder to store cutting fluid. The plug 14 has an internal stop, square thread, and connecting thread. It is assembled with the connecting tool holder 4 using the square thread and internal stop, and then the connecting tool holder 4 is tightened with screws.

[0039] like Figure 3 ,4 As shown, the roughing and finishing boring body 3 and the plug 14 are generally made of 45 steel plate, while the body 13 is generally made of seamless steel pipe of 45 / 27SiMn. Both of these are heat-treated to HB250-300. The baffle 15 is usually made of steel plate with a thickness of 5mm. Materials with good weldability are selected.

[0040] like Figure 5 , 6 As shown, the tool body connecting shank 4 is machined with two positioning stops φD4 and two square threads. One end is connected to the roughing and finishing boring body 3, and the other end is connected to the tool holder. The tool body connecting shank 4 is also machined with threaded holes to fix the tool body connecting shank 4 and the roughing and finishing boring body 3.

[0041] like Figure 5 , 6 As shown, the blade connecting handle 4 can be welded together from two types of thick-walled tubes, and the material used for manufacturing is tempered material.

[0042] like Figure 12 , 13 As shown in Figure 14, the keyway box 1 is machined with wooden guide keyways L7 and L13, usually four in total. The two ends of the slots are not connected, and 20mm is usually left unmachined. This slot is used to install the wooden guide key 2. Screw through holes are machined on both sides of the slot, and positioning blocks L5 are machined below. -0.1 -0.2 L6 and positioning arc D1 / 2, and the outer circle φD1 and grooves L5 and L6 of the roughing and finishing boring body 3. +0.2 +0.1 Matching. The height L6 of the positioning block matches the depth L6 of the three grooves in the roughing and finishing boring body. +0.2 +0.1 There should be a gap to allow the arc D1 / 2 to fit tightly with the outer circle φD1 of the rough and fine boring body 3; the groove width L5 and the wooden guide key 2 should have an interference of 1-2mm to facilitate the expansion and tightening of the wooden guide key after soaking.

[0043] like Figure 10 , 11 As shown, the precision boring tool holder 12 has a groove for mounting the precision boring tool. This groove is a through groove, and the clearance between the groove and the precision boring tool is generally designed to be 0.03-0.05mm. A threaded through hole is machined at the bottom of the groove for connecting and fixing it to the roughing and precision boring body 3. Threaded holes are machined on both sides of the groove for fixing the precision boring cover 11. The two ends of the precision boring tool holder 12 are machined into arcs R1 to facilitate rotation within the inner hole of the part. The width L2 of the precision boring tool holder... 0 -0.1 and thickness L1 0 -0.1 All design and machining deviations are designed to ensure that after the fine boring tool holder 12 is installed in the tool holder slot of the rough and fine boring body 3, the fine boring tool holder 12 is lower than the upper plane of the tool holder slot, and the assembly gap is controlled within 0.1mm.

[0044] like Figure 7 , 8 As shown in Figure 9, the precision boring cover 11 is machined with a groove L8H9 that mates with the rough boring head 10 and a T-bolt groove. The boss L8f7 on the rough boring head 10 is installed in the groove L8H9 machined at both ends of the precision boring cover 11 and is connected and secured with T-bolts, washers and nuts. The center of the precision boring cover 11 is machined with a threaded hole for lifting and a threaded hole for pressing the precision boring tool. Screw through holes are machined on both sides of the center for connecting the precision boring tool box 12. The two ends of the precision boring cover 11 are machined into arcs R1, which are consistent with the arcs R1 of the precision boring tool box 12.

[0045] like Figure 7 As shown, the bottom surface of the precision boring cover 11 needs to be ground flat to a smooth finish, so as to facilitate the sliding of the precision boring tool in the groove of the precision boring tool box 12.

[0046] like Figure 15 , 16 As shown, the rough boring head 10 has a positioning protrusion L8f7 machined on it, and T-bolt through holes are symmetrically machined on both sides. The protrusion L8f7 of the rough boring head 10 mates with the groove L8H9 of the fine boring cover 11. There should be a gap at the bottom of the mating to ensure that the two fit tightly. Then, the two are fixed by T-bolts, washers, and nuts. The rough boring head 10 has two tool square grooves L2*L2 machined on it. The upper plane of the tool square grooves L2*L2 is 1mm higher than the center line. A threaded hole is machined in the center of the groove. The rough boring tool is installed into the tool square grooves L2*L2 and secured with screws. One side of the rough boring head 10 is machined into an arc R2. After the rough boring head 10 is installed into the fine boring cover 11, this arc R2 is lower than the arc R1 of the fine boring cover 11 to prevent interference of the inner hole during rotation.

[0047] like Figure 7 , 8 As shown in 9, 10, 11, 12, 13, and 14, the keyway box 1, the fine boring tool box 12, and the fine boring cover 11 can all be made of 45 tempered steel plate, and the rough boring tool head 10 can be made of tempered alloy structural steel.

[0048] like Figure 1 , 2 As shown, after the ultra-large aperture replaceable roughing and finishing boring integrated device is assembled, the roughing tool is installed in the tool groove L2*L2 of the roughing tool head 10, and the tool groove L10 of the finishing tool box 12 is... +0.03 0, L11 +0.03 The fine boring tool is installed inside the 0. Two water outlet holes are machined between the baffle 15 and the plug 14 on the rough and fine boring body 3. Two oil pipes are welded on site according to the positions of the fine boring tool head and the rough boring tool head, so that the cutting fluid flows directly to the rough and fine boring tool heads to achieve the purpose of cooling the tool heads.

[0049] like Figure 1 ,2 As shown, the large-diameter interchangeable roughing and finishing boring integrated device involves fixing the keyway box 1 to the roughing and finishing boring body 3 with screws. The connecting tool holder 4 is connected and secured to the roughing and finishing boring body 3 via threads and screws. The finishing boring tool box 12 is fixed to the roughing and finishing boring body 3. The finishing boring cover 11 and the roughing boring head 10 are then assembled and secured with screws and T-bolts. A wooden guide key 2 is installed inside the keyway box 1. The roughing boring tool is installed in the square slot of the roughing boring head 10, its dimensions are adjusted, and the roughing boring tool is secured with screws. The finishing boring tool is adjusted and then installed into the slot of the finishing boring tool box 12. This device is connected to a tool holder. When the spindle rotates, the tool holder drives the roughing and finishing boring integrated device in a linear motion, achieving one-time roughing and finishing boring of the inner hole.

[0050] like Figure 1 , 2 As shown, the ultra-large diameter interchangeable roughing and finishing boring integrated device can use a roughing tool and a finishing tool separately, or both can be used simultaneously for internal hole machining.

[0051] like Figure 1 , 2 As shown, the large-diameter replaceable rough and fine boring integrated device has a keyway box 1, a fine boring cover 11, and a fine boring tool box 12 that can be replaced according to the size of the hole, thereby performing rough and fine boring of inner holes of different diameters, which is economical and practical.

Claims

1. A large-diameter interchangeable roughing and finishing boring integrated device, comprising a roughing and finishing boring body (3), a tool connecting shank (4) connected to a tool holder and mounted on one end of the roughing and finishing boring body (3) by threads and screws, a roughing boring tool head (10) mounted on the other end of the roughing and finishing boring body (3) by T-bolts, washers and nuts (9), a finishing boring tool box (12), and a finishing boring cover (11), characterized in that: The roughing and finishing boring body (3) is assembled and welded from a plug (14), a body (13), and a baffle (15). Specifically, the body (13) is made of seamless steel pipe, the plug (14) is welded to one side port of the body (13), the baffle (15) is welded inside the body (13), and at least four through slots for installing the keyway box (1) are machined on the body (13). The keyway box (1) is installed and fixed on the body (13) by threaded holes symmetrically machined on both sides of the through slots and screws. A slot for mounting a fine boring tool box (12) is provided on the other side port of the main body (13). This slot is a through slot with threaded holes machined in it. The fine boring tool box (12) is mounted and connected by fine boring tool box screws (7). A fine boring cover (11) is mounted and fixed on the fine boring tool box (12) by fine boring cover screws (8). Both ends of the fine boring cover (11) are machined to cooperate with the rough boring tool head (10). The rough boring head (10) is installed and fixed in the grooves machined at both ends of the fine boring cover by T-bolts and T-bolt grooves; a hoisting threaded hole and a top-pressing threaded hole for mounting the fine boring tool are machined on the center of the fine boring cover (11); screw through holes for connecting the fine boring tool box (12) are machined on both sides of the center; the two ends of the fine boring cover (11) are machined into arcs, which are consistent with the arcs of the fine boring tool box; A baffle (15) is installed and welded in the inner hole of the main body. The baffle (15) forms a closed cavity for storing cutting fluid with the inner hole of the main body, the plug (14), the tool body connecting handle (4) and the tool bar. A tool body connecting handle mounting hole is opened on the plug (14). The tool body connecting handle (4) is installed in the tool body connecting handle mounting hole by a tool body connecting handle screw (5).

2. The ultra-large aperture interchangeable roughing and finishing boring integrated device according to claim 1, characterized in that: A positioning protrusion is machined on the rough boring head (10), and T-bolt through holes are symmetrically machined on both sides of it. The rough boring head (10) is installed and fixed in the grooves machined at both ends of the fine boring cover by T-bolts, washers and nuts (9) and T-bolt slots. The protrusion of the rough boring head (10) matches the groove of the fine boring cover (11), and the two are fixed by T-bolts, washers and nuts. Two tool square grooves are machined on the rough boring head (10). The upper plane of the tool square groove is 1mm higher than the center line. A threaded hole is machined in the center of the groove. The rough boring tool is installed in the tool square groove and fixed with screws. One side of the rough boring head is machined into an arc. After the rough boring head is installed in the fine boring cover, this arc is lower than the arc of the fine boring cover to prevent interference of the inner hole during rotation.

3. The ultra-large aperture interchangeable roughing and finishing boring integrated device according to claim 1, characterized in that: The two ends of the precision boring tool box (12) are machined into arcs to facilitate rotation within the inner hole of the part; the width and thickness of the precision boring tool box (12) ensure that after the precision boring tool box is installed in the tool box slot of the rough and precision boring body, the precision boring tool box is lower than the upper plane of the tool box slot, and the assembly gap is controlled within 0.1mm.

4. The ultra-large aperture interchangeable roughing and finishing boring integrated device according to claim 1, characterized in that: The keyway box (1) is machined with a wooden guide keyway. The two ends of the keyway are not connected and 20mm is left unmachined. This keyway is used to install the wooden guide key (2). Screw holes are machined on both sides of the keyway. A positioning block and a positioning arc are machined below to fit with the outer circle of the rough and fine boring machine body and the keyway. The height of the positioning block should be gapped with the depth of the keyway of the rough and fine boring machine body to facilitate the tight fit of the arc with the outer circle of the rough and fine boring machine body. The width of the keyway and the wooden guide key have an interference of 1-2mm to facilitate the expansion and tightening of the wooden guide key after soaking.

5. The ultra-large aperture interchangeable roughing and finishing boring integrated device according to claim 1, characterized in that: The tool body connecting handle (4) has two positioning stops and square thread, one end of which is connected to the rough and fine boring body (3), and the other end is connected to the tool bar; the tool body connecting handle (4) also has a threaded hole, and the tool body connecting handle (4) is fixed to the plug (14) through the threaded hole and the tool body connecting handle screw (5).

6. The ultra-large aperture interchangeable roughing and finishing boring integrated device according to claim 1, characterized in that: A roughing tool is installed in the roughing head (10), and a fine boring tool is installed in the tool groove of the fine boring tool box (12). Two water outlet holes (6) are machined between the baffle (15) and the plug (14) on the roughing and fine boring body (3). Oil pipes for cutting fluid to flow to the roughing and fine boring heads are welded according to the positions of the fine boring tool head and the roughing tool head.

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