Machine tool and tool therefor

Abstract

The application relates to the technical field of machine tools, in particular to a machine tool and a tool thereof. The machine tool comprises a base, two sliding rails are fixedly connected to the base, a connecting frame is slidably connected to the upper sides of the two sliding rails, two connecting rods are slidably connected to the inner sides of the connecting frame, fixing frames are slidably connected to the inner sides of the two connecting rods, limiting tables are fixedly connected to the inner sides of the two fixing frames, limiting belts are rotatably connected to the limiting tables, a plurality of supporting plates are fixedly connected to the inner sides of the limiting belts, a plurality of rolling balls are rollingly connected to the supporting plates, sliding grooves are arranged in the inner sides of the two sides of each limiting table, sliding blocks are fixedly connected to the two sides of each limiting belt, an adjusting plate is fixedly connected to the outer side of the connecting frame, a rack is fixedly connected to the lower end of the adjusting plate, and a scale groove is arranged on the upper side of the adjusting plate. The tool comprises a tool head, a tool rod is fixedly connected to the lower end of the tool head, the tool rod is slidably connected in the adjusting plate, a gear is rotatably connected to the bottom of the tool rod, and the gear ring and the rack are mutually engaged. The tool has the beneficial effect that the boring machining of workpieces is facilitated.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, and more specifically to a machine tool and its cutting tools. Background Technology

[0002] When machining some workpieces, boring is required. Boring is a further processing of pre-made holes on the workpiece. It can enlarge the hole diameter, improve accuracy, reduce surface roughness, and also better correct the deviation of the original hole axis. There are two boring processing methods: when the workpiece is small, boring is performed by rotating the workpiece; when the workpiece is large, boring is performed by rotating the cutting tool.

[0003] Currently, when boring using machine tools, the workpiece is usually rotated. However, since the machine tool can only hold one end of the workpiece during boring, it is prone to bending and jumping when the workpiece is long, causing the tool and workpiece to shift in position. This results in a smaller machining range and lower precision for the machine tool. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a machine tool and its cutting tool, which has the advantage of facilitating boring of workpieces.

[0005] A machine tool includes a base, on which two slide rails are fixedly connected. A connecting frame is slidably connected to the upper side of the two slide rails. Two symmetrical connecting rods are slidably connected to the inner side of the connecting frame. A fixed frame is slidably connected to the inner side of each of the two connecting rods. A limit platform is fixedly connected to the inner side of each of the two fixed frames. A limit belt is rotatably connected to each limit platform. Multiple support plates are fixedly connected inside each limit belt. Multiple ball bearings are rollingly connected inside each support plate.

[0006] Furthermore, each of the limiting platforms has a sliding groove on both sides, and each limiting band has a racetrack-shaped slider fixed to both sides and slidably connected inside the corresponding sliding groove.

[0007] Furthermore, an adjustment plate is fixedly connected to the outside of the connecting frame, a rack is fixedly connected to the lower end of the adjustment plate, and a scale groove is provided on the upper side of the adjustment plate.

[0008] A cutting tool includes a cutting head, a cutting shank fixedly connected to the lower end of the cutting head, the cutting shank being slidably connected inside an adjusting plate, and a gear being rotatably connected to the bottom of the cutting shank, with a gear ring meshing with a rack. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0010] Figure 1 This is a schematic diagram of the machine tool in this invention;

[0011] Figure 2 This is a schematic diagram of the base structure in this invention;

[0012] Figure 3 This is a schematic diagram of the connecting frame in this invention;

[0013] Figure 4 This is a partial sectional view of the connecting rod and the fixing frame in this invention;

[0014] Figure 5 This is a schematic diagram of the structure of the limiting platform and the limiting band in this invention;

[0015] Figure 6 This is a schematic diagram of the limiting platform in the present invention;

[0016] Figure 7 This is a partial cross-sectional view of the limiting band in this invention;

[0017] Figure 8 This is a schematic diagram of the structure of multiple limiting platforms combined in this invention;

[0018] Figure 9 This is a schematic diagram of the tool structure in this invention;

[0019] Figure 10 This is a schematic diagram of the structure of the cutting tool and connecting frame in this invention.

[0020] In the diagram: base 101; slide rail 102; screw 103; drive seat 104; clamping plate 105; clamping frame 106; motor I 107; motor II 108;

[0021] Connecting frame 201; connecting rod 202; fixing frame 203; spring II 204; adjusting plate 205; rack 206; scale groove 207;

[0022] Limiting stage 301; slide 302; hollow tube 303; connecting tube 304; spring I 305;

[0023] Limiting band 401; slider 402; support plate 403; ball bearing 404;

[0024] Cutter head 501; cutter bar 502; orientation plate 503; gear 504. Detailed Implementation

[0025] like Figure 1-3 As shown in Figure 5-7, this example can facilitate the boring process of the workpiece.

[0026] Since the machine tool includes a base 101, two slide rails 102 are fixedly connected to the base 101. A connecting frame 201 is slidably connected to the upper side of the two slide rails 102. Two symmetrical connecting rods 202 are slidably connected to the inner side of the connecting frame 201. A fixing frame 203 is slidably connected to the inner side of each of the two connecting rods 202. A limiting platform 301 is fixedly connected to the inner side of each of the two fixing frames 203. A limiting band 401 is rotatably connected to each limiting platform 301. Multiple support plates 403 are fixedly connected inside each limiting band 401. Multiple balls 404 are rolledly connected inside each support plate 403. During boring, one end of the workpiece to be boring is fixed to the base 101, and the other end of the workpiece is placed between the two limiting platforms 301. The boring tool is fixed to the connecting frame 201. Then, the workpiece is rotated, and at the same time, the connecting frame 201 is pushed to move on the slide rails 102, thereby moving through the connecting rods 202. 02 drives the fixed frame 203 to move, which in turn pushes the limiting stage 301 to slide on the workpiece, thereby driving the limiting band 401 to rotate on the workpiece. At the same time, multiple balls 404 nested in the support plate 403 roll on the outside of the workpiece, thus achieving the effect of the limiting stage 301 and the limiting band 401 moving on the outside of the workpiece. When the limiting stage 301 and the limiting band 401 move on the outside of the workpiece, they push the fixed frame 203 inward, thereby causing the upper and lower limiting bands 401 to clamp the workpiece, thus preventing the workpiece from shaking and bending to ensure the stability of the workpiece, thus preventing the tool and workpiece from shifting positions during boring, thereby increasing the boring machining accuracy. At the same time, the limiting stage 301 supports the workpiece, preventing long workpieces from bending during boring, thereby increasing the machine tool's boring machining range, thus facilitating the boring machining of the workpiece.

[0027] When the boring tool moves toward the workpiece, the limiting band 401, which is in contact with the workpiece, is subjected to friction from the workpiece and rotates outside the limiting table 301. This converts the sliding friction between the limiting band 401 and the workpiece into rolling friction, thereby reducing the friction between the limiting band 401 and the workpiece. At the same time, the rotation of the workpiece during boring causes the ball bearing 404 to roll within the support plate 403 through friction, further reducing the friction between the limiting band 401 and the workpiece. This further achieves the effect of maintaining the stability of the workpiece during the boring process.

[0028] like Figure 1 , 5 As shown in Figure 7, this example can achieve the effect of preventing the workpiece from being scratched.

[0029] Since each of the limiting platforms 301 in the machine tool has a sliding groove 302 on both sides, and each limiting band 401 has a racetrack-shaped slider 402 fixedly connected to both sides and slidably connected inside the corresponding sliding groove 302; when the limiting band 401 rotates outside the limiting platform 301, it drives the slider 402 to slide in the sliding groove 302, thereby adjusting the relative position of the limiting platform 301 and the limiting band 401 through the sliding groove 302 and the slider 402, thereby preventing the friction between the workpiece and the limiting band 401 from scraping off the limiting band 401, and thus preventing the limiting band 401 from falling off. If the limiting band 401 falls off, there will be no buffer between the limiting platform 301 and the workpiece, which will cause the limiting platform 301 to scrape against the workpiece, thereby causing scratches on the workpiece. Thus, by preventing the limiting band 401 from falling off the limiting platform 301, the effect of preventing the workpiece from being scratched is achieved.

[0030] like Figure 1 , 5 As shown in Figure 8, this example can facilitate boring of workpieces of different diameters.

[0031] Since each of the limiting platforms 301 in the machine tool has a hollow tube 303 fixedly connected to one end and a connecting tube 304 fixedly connected to the other end, and a nut is threadedly connected to the end of each connecting tube 304, each limiting platform 301 can be rotatably connected to the hollow tube 303 and other limiting platforms 301 through the connecting tube 304 on both sides; when the diameter of the workpiece is large, a single limiting platform 301 cannot fix the workpiece. In this case, the connecting tube 304 of another limiting platform 301 is inserted into the hollow tube 303 of the original limiting platform 301, and then the position of the connecting tube 304 and the hollow tube 303 is fixed by the nut. At the same time, the connecting tube 304 of the original limiting platform 301 is inserted into the hollow tube of another second limiting platform 301. In section 303, multiple limiting platforms 301 are connected together by fixing with nuts, thereby increasing the number of limiting bands 401. The angle between the newly added limiting platform 301 and the original limiting platform 301 is adjusted, and the workpiece is wrapped between multiple limiting bands 401. By wrapping the large-diameter workpiece with multiple limiting bands 401, the support provided to the workpiece can be increased, thereby increasing the support capacity of the workpiece and achieving support for the end of the large-diameter workpiece. By increasing or decreasing the number of limiting platforms 301, the diameter of the supported workpiece can be adapted, thereby facilitating the support of the end of workpieces with different diameters. This ensures that workpieces with different diameters remain stable during the boring process, thus achieving the effect of facilitating the boring of workpieces with different diameters.

[0032] like Figure 1 , 5 As shown in Figure 8, this example allows for easy adjustment of the angles between multiple limit stages 301.

[0033] Because springs I 305 are fixed between two adjacent limiting platforms 301 in the machine tool; springs I 305 are in a compressed state and are located on the upper part of the limiting platform 301. The thrust generated by the compressed springs I 305 pushes the upper part of the limiting platforms 301 to both sides, causing the two limiting platforms 301 to rotate around the connecting pipe 304 and the hollow pipe 303. When the workpiece is below the limiting platforms 301, the multiple limiting platforms 301 will wrap around the workpiece after rotation. At the same time, the thrust of springs I 305 to both sides causes the limiting platforms 301 on both sides to rotate around the workpiece and maintain downward pressure on the workpiece, thereby maintaining stable support for the workpiece. Furthermore, the angle between the multiple limiting platforms 301 can be automatically adjusted by the pushing of springs I 305, thereby achieving the effect of facilitating the adjustment of the angle between the multiple limiting platforms 301.

[0034] like Figure 1-4 As shown in Figure 8, this example can achieve the effect of clamping the workpiece with the limiting bands 401 on both the upper and lower sides.

[0035] Since each connecting rod 202 in the machine tool is fixedly connected to the corresponding fixed frame 203 with a spring II 204; the spring II 204 is in a compressed state, and the compressed spring II 204 generates elastic force to push the connecting rod 202 and the fixed frame 203 to move to both sides. Since the connecting rod 202 is fixed on the connecting frame 201, it pushes the fixed frame 203 to move inward, thereby achieving the effect of pushing the fixed frame 203 inward; at the same time, the limiting table 301 pushes the limiting band 401 to move inward, thereby pushing the upper and lower limiting bands 401 to clamp the workpiece on the inside, thereby achieving the effect of the upper and lower limiting bands 401 clamping the workpiece.

[0036] like Figure 1-2 As shown, this example can achieve the effect of rotating the workpiece.

[0037] Since a drive seat 104 is fixedly connected to one end of the base 101 in the machine tool, a clamping plate 105 is rotatably connected inside the drive seat 104, and a motor I 107 for driving the clamping plate 105 to rotate is fixedly connected to the outside of the drive seat 104, and three clamping frames 106 are slidably connected on the clamping plate 105; one end of the workpiece is fixed in the clamping plate 105 by sliding the clamping frames 106, and then the motor I 107 drives the clamping plate 105 to rotate in the drive seat 104, thereby driving the workpiece to rotate, thus achieving the effect of rotating the workpiece.

[0038] like Figure 1-3 As shown, this example can achieve the effect of the mobile connecting bracket 201.

[0039] Since the lower part of the drive base 104 in the machine tool is rotatably connected to the screw 103, the screw 103 is threadedly connected to the lower part of the connecting frame 201, and the other end of the base 101 is fixedly connected to the motor II 108 that drives the screw 103 to rotate; the motor II 108 drives the screw 103 to rotate, and then drives the connecting frame 201 to move through the thread, thereby achieving the effect of moving the connecting frame 201.

[0040] like Figure 1-3 As shown in 9-10, this example can achieve the effect of easily adjusting the boring hole size.

[0041] Since an adjusting plate 205 is fixedly connected to the outer side of the connecting frame 201 in the machine tool, and a rack 206 is fixedly connected to the lower end of the adjusting plate 205, and a scale groove 207 is opened on the upper side of the adjusting plate 205; the boring tool is fixed in the adjusting plate 205. When the size of the boring hole needs to be changed, the distance of the tool movement can be easily fed back through the scale groove 207, which makes it easy to adjust the position of the tool in the workpiece. By adjusting the position of the tool in the workpiece, the size of the boring hole of the tool on the workpiece can be changed, thereby achieving the effect of easy adjustment of the boring hole size.

[0042] like Figure 1-3 As shown in Figures 9-10, this example can improve the accuracy of boring hole dimensions.

[0043] The cutting tool includes a cutter head 501, with a cutter shank 502 fixedly connected to its lower end. The cutter shank 502 is slidably connected within the adjusting plate 205. A gear 504 is rotatably connected to the bottom of the cutter shank 502, and the gear 504 meshes with the rack 206. Rotating the gear 504 causes the cutter shank 502 to move through the meshing of the gear 504 and the rack 206, which in turn causes the cutter shank 502 to slide within the adjusting plate 205, thereby moving the cutter head 501. This allows for adjustment of the boring hole size. By controlling the module of the gear 504 and the rack 206, the distance the cutter shank 502 moves after one revolution of the gear 504 is equal to one graduation on the scale groove 207. This increases the displacement of the gear 504 when moving the cutter shank 502, thereby increasing the accuracy of adjusting the movement of the cutter shank 502 and improving the accuracy of changing the position of the cutter head 501. Ultimately, this improves the accuracy of the boring hole size.

[0044] like Figure 1-3 As shown in 9-10, this example can prevent deviations in the boring hole dimensions.

[0045] Because the tool holder 502 in the cutting tool is fixedly connected to two orientation plates 503 at its end, and the two orientation plates 503 are slidably connected to the upper and lower sides of the adjusting plate 205 respectively, and the upper orientation plate 503 is threadedly connected to a bolt; after changing the position of the tool holder 502, the bolt in the upper orientation plate 503 is tightened, and the bolt moves inward to the orientation plate 503 through the thread, and the bolt presses against the adjusting plate 205. The friction between the bolt and the adjusting plate 205 prevents the bolt from moving, and thus prevents the orientation plate 503 from moving, thereby fixing the position of the tool holder 502. This prevents the tool head 501 from being disturbed by the workpiece during the boring process, thus fixing the position of the tool head 501 and preventing deviations in the boring dimensions.

[0046] Because the boring process of the tool head 501 requires cutting the workpiece, the material of the tool head 501 needs to have high hardness, which leads to a higher tool price. Therefore, the mainstream approach for current tools is that only the machining part of the tool head 501 is made of high-hardness material, while the other part is a support material. The tool head 501 is prevented from rotating by two positioning plates 503, which in turn prevents the tool holder 502 from rotating. Since only one side of the tool head 501 is made of high-hardness material, it also prevents the workpiece from colliding with the material supporting the tool head 501 and breaking, which would cause the tool head 501 to fall off, thus achieving the effect of preventing damage to the tool head 501.

Claims

1. A machine tool, characterized in that: The system includes a base (101), on which two slide rails (102) are fixedly connected. A connecting frame (201) is slidably connected to the upper side of the two slide rails (102). Two symmetrical connecting rods (202) are slidably connected to the inner side of the connecting frame (201). A fixing frame (203) is slidably connected to the inner side of each of the two connecting rods (202). A limiting platform (301) is fixedly connected to the inner side of each of the two fixing frames (203). A limiting band (401) is rotatably connected to each limiting platform (301). Multiple support plates (403) are fixedly connected inside each limiting band (401). Multiple balls (404) are slidably connected inside each support plate (403).

2. The machine tool according to claim 1, characterized in that: Each of the limiting platforms (301) has a sliding groove (302) inside both sides, and each limiting band (401) has a racetrack-shaped slider (402) fixed to both sides and slidably connected inside the corresponding sliding groove (302).

3. A machine tool according to claim 2, characterized in that: Each of the limiting platforms (301) has a hollow tube (303) fixedly connected to one end, and a connecting tube (304) fixedly connected to the other end of each limiting platform (301). Each connecting tube (304) has a nut connected to its end by a thread. Both sides of each limiting platform (301) can be rotatably connected to the hollow tube (303) and other limiting platforms (301) through the connecting tube (304).

4. A machine tool according to claim 3, characterized in that: A spring I (305) is fixed between two adjacent limiting platforms (301).

5. A machine tool according to claim 4, characterized in that: Each of the connecting rods (202) is fixedly connected to a corresponding fixing frame (203) by a spring II (204).

6. A machine tool according to claim 5, characterized in that: One end of the base (101) is fixedly connected to a drive seat (104), a clamping plate (105) is rotatably connected inside the drive seat (104), a motor I (107) for driving the clamping plate (105) to rotate is fixedly connected to the outside of the drive seat (104), and three clamping frames (106) are slidably connected on the clamping plate (105).

7. A machine tool according to claim 6, characterized in that: The lower part of the drive base (104) is rotatably connected to a screw (103), which is threaded to the lower part of the connecting frame (201). The other end of the base (101) is fixed to a motor II (108) that drives the screw (103) to rotate.

8. A machine tool according to claim 1, characterized in that: An adjusting plate (205) is fixedly connected to the outside of the connecting frame (201), a rack (206) is fixedly connected to the lower end of the adjusting plate (205), and a scale groove (207) is opened on the upper side of the adjusting plate (205).

9. A cutting tool installed on a machine tool according to any one of claims 1-8, characterized in that: It includes a cutter head (501), a cutter bar (502) fixedly connected to the lower end of the cutter head (501), the cutter bar (502) is slidably connected in the adjusting plate (205), and a gear (504) is rotatably connected to the bottom of the cutter bar (502), the gear (504) meshing with the rack (206).

10. A cutting tool according to claim 9, characterized in that: Two azimuth plates (503) are fixedly connected to the end of the cutter bar (502). The two azimuth plates (503) are slidably connected to the upper and lower sides of the adjusting plate (205), respectively. The upper azimuth plate (503) has bolts connected inside by threads.

Images