Adjustable tool frame for numerical control lathe

Abstract

The utility model relates to an adjustable tool rest for a numerically controlled lathe, which effectively solves the problems that the conventional tool rest for the numerically controlled lathe is complicated to operate and is inconvenient to finely adjust the height and the feed depth of a tool. According to the adjustable tool rest for the numerical control lathe, the tightness of the rotating seat can be adjusted through the locking mechanism, so that the overall structure above can be conveniently rotated, a tool can be conveniently and rapidly replaced, the overall structure can be firmly fixed, the operation efficiency can be improved while the stability of the tool is guaranteed, the height of the fixing mechanism can be finely adjusted through the lifting mechanism, and the practicability is high. The fine adjustment structure can finely adjust the transverse position of the sliding block, so that fine adjustment can be conveniently carried out on the height and the feeding depth of the cutter, workpieces of different sizes can be conveniently and accurately machined, the height and the feeding depth of the cutter can be adjusted more finely, and the machining precision is improved. The safety problems such as tool collision caused by overlarge adjusting stroke are avoided, and the numerical control lathe is more convenient to use during machining.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control lathe tool fixing mechanism technical field, concretely relates to a adjustable tool rest for numerical control lathe. BACKGROUND

[0002] Numerical control lathe is one of numerical control machine tools that is more widely used at present. It is mainly used for cutting workpiece and can carry out cutting groove, drilling, reaming, reaming and boring and other processing, and when the metal is processed to different degrees, different tools and tool fixing frame need to be used, but the numerical control lathe tool rest appearing on the market still has various kinds of deficiencies, and cannot meet the needs of production.

[0003] When the existing numerical control lathe tool rest is used, the hand wheel needs to be rotated to drive the screw rod to move the tool rest connected to the top end of the screw rod outward, and the internal hexagonal screw embedded in the base needs to be driven by a hexagonal wrench to rotate, so that the base is separated from the limiting, and after rotating the base, the hexagonal bolt is re-fixed by the hexagonal wrench, so that the multi-station tool rest assembled at the top of the base can be rotated. However, the operation steps for rotating and adjusting the tool bit of the multi-station tool rest are relatively complicated, and repeated operations of installation, rotation and positioning between the tool rest and the base are needed to realize the rotation adjustment of the multi-station tool rest. In addition, the existing tool rest structure is fixed, and it is not convenient to finely adjust the height and depth of cut of the tool. The adjustment range is too large, which may cause the problem of tool collision and affect the safety of processing. It is not convenient to use when processing workpieces of different sizes. CONTENT OF THE UTILITY MODEL

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an adjustable tool rest for numerical control lathe. The adjustable tool rest for numerical control lathe can quickly replace the tool and fix the overall structure firmly, ensure the stability of the tool, improve the operation efficiency, process different sizes of workpieces more accurately and finely, and adjust the height and depth of cut of the tool more finely, so as to avoid the safety problem of tool collision caused by too large adjustment stroke, and be more convenient for use when the numerical control lathe is processing.

[0005] An adjustable tool rest for numerical control lathe, comprising a sliding base and a rotating base, the rotating base is fixedly connected to the upper surface of the sliding base, and the top of the rotating base is engaged with a rotating seat, the center part of the rotating seat is provided with a locking mechanism that can fix it, the upper surface of the rotating seat is fixedly connected with a rectangular frame, and the inside of the rectangular frame is provided with a lifting mechanism, the top of the lifting mechanism is provided with a sliding rail seat, and the middle part of the upper surface of the sliding rail seat is provided with a tooth groove, the top of the sliding rail seat is transversely slidably connected with a sliding block, and the inside of the sliding block is provided with a fine adjustment mechanism, the fine adjustment mechanism is in transmission connection with the tooth groove, and the upper surface of the sliding block is fixedly installed with a fixing mechanism for fixing the tool.

[0006] Preferably, the upper surface of the rotating base and the lower surface of the rotating seat are provided with meshing teeth capable of being engaged with each other, and the two are engaged with each other through the meshing teeth, and the bottom of the rectangular frame is fixedly installed on the upper surface of the rotating seat through bolts.

[0007] Preferably, the locking mechanism comprises a first threaded rod, a first bevel gear, a second bevel gear and a rotating rod, the first threaded rod is arranged at the axial position of the rotating base and the rotating seat, and the first bevel gear is fixedly connected to one end of the first threaded rod arranged in the rotating base, the first threaded rod is in transmission connection with the rotating seat through threads, the rotating rod is transversely arranged at the side of the rotating base, and the second bevel gear is fixedly connected to one end of the rotating rod close to the first bevel gear, and the second bevel gear is engaged with the first bevel gear.

[0008] Preferably, the lifting mechanism comprises a first speed reducer, a second threaded rod, a limiting frame, a lifting block and a rectangular sleeve, the first speed reducer is fixedly installed in the rectangular frame, and the second threaded rod is connected to the output end of the first speed reducer through a spline, the second threaded rod is vertically rotatably connected to the middle part of the rectangular frame, the bottom end of the limiting frame is fixedly connected to the inside of the rectangular frame, and the second threaded rod is rotatably connected to the middle part of the limiting frame, the lifting block is cross-shaped and fixedly connected to the bottom of the rectangular sleeve, the middle part of the lifting block is in threaded transmission connection with the outside of the second threaded rod, and the four corners of the lifting block are all sleeved with the outside of the limiting frame, and the rectangular sleeve is inserted into the inside of the rectangular frame and can move up and down in the inside of the rectangular frame.

[0009] Preferably, the fine adjustment mechanism comprises a second speed reducer, a worm, a worm wheel, a first spur gear and a second spur gear, the second speed reducer is fixedly installed in the sliding block, and the output end is connected with the worm through a spline, the first spur gear is fixedly connected to one side of the worm wheel and coaxially arranged with the worm wheel, the worm wheel is rotatably connected to the inside of the sliding block and in transmission connection with the worm, the second spur gear is engaged with the first spur gear and rotatably connected to the inside of the sliding block, and the bottom end of the second spur gear is arranged through the lower surface of the sliding block and engaged with the tooth groove on the sliding rail seat.

[0010] Preferably, the fixing mechanism comprises a fixing block and fixing bolts, the fixing block is fixedly installed on the upper surface of the sliding block through bolts, the upper surface of the fixing block is connected with the fixing bolts for fixing the cutter through threads, the bottom of the fixing bolt is arranged through the inside of the fixing block in threads, the number of the fixing bolts is several, and the several fixing bolts are equidistantly and uniformly arranged on the upper surface of the fixing block.

[0011] The above technical scheme has the following beneficial effects:

[0012] The adjustable tool holder for the numerical control lathe is provided with a rotating seat, a locking mechanism, a lifting mechanism and a fine adjustment mechanism, the tightness of the rotating seat can be adjusted through the locking mechanism, so that the overall structure above is conveniently rotated, the tool is conveniently and quickly replaced, the overall structure is fixed firmly, the operation efficiency is improved while the stability of the tool is ensured, the lifting mechanism can finely adjust the height of the fixing mechanism, the fine adjustment mechanism has a larger transmission ratio and can finely adjust the transverse position of the sliding block, so that the height and the depth of cut of the tool are finely and accurately adjusted, different sizes of workpieces are conveniently and accurately processed, the height and the depth of cut of the tool are finely adjusted, the safety problems such as tool collision caused by too large adjustment stroke are avoided, and the numerical control lathe is more convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the split state of the utility model;

[0015] Figure 3 It is a schematic diagram of the rectangular frame of the utility model;

[0016] Figure 4 It is a sectional view of the rectangular frame and the lifting mechanism of the utility model;

[0017] Figure 5 It is a schematic diagram of the split state of the utility model Figure 4 ;

[0018] Figure 6 It is a schematic diagram of the fine adjustment mechanism installation state of the utility model;

[0019] Figure 7 It is a schematic diagram of the rotating seat and the locking mechanism of the utility model;

[0020] Figure 8 It is a schematic diagram of the fine adjustment structure of the utility model.

[0021] In the drawing: 1, sliding base; 2, rotating base; 3, rotating seat; 4, rectangular frame; 5, sliding rail seat; 6, tooth groove; 7, sliding block; 8, first threaded rod; 9, first bevel gear; 10, second bevel gear; 11, rotating rod; 12, first speed reducer motor; 13, second threaded rod; 14, limiting frame; 15, lifting block; 16, rectangular sleeve; 17, second speed reducer motor; 18, worm; 19, worm wheel; 20, first spur gear; 21, second spur gear; 22, fixed block; 23, fixed bolt. DETAILED DESCRIPTION

[0022] The foregoing and other technical contents, characteristics and effects of the utility model are described in the following in cooperation with theFigures 1 to 8 The embodiment is described in detail.

[0023] The embodiment provides an adjustable tool holder for a numerical control lathe, as shown in the accompanying drawings. Figures 1-8 The sliding base 1 can be connected with a transverse moving mechanism on the numerical control lathe, and the sliding base 1 has the same base structure as the existing tool holder of the numerical control lathe, so that the base structure is not described herein. The rotating base 2 is fixedly connected to the upper surface of the sliding base 1, and the top of the rotating base 2 is engaged with the rotating seat 3. The upper surface of the rotating base 2 and the lower surface of the rotating seat 3 are both provided with engagement teeth that can be engaged with each other, and the two are engaged with each other through the engagement teeth, which can ensure the firmness of the connection between the rotating seat 3 and the rotating base 2 after locking. Even if the rotating seat 3 is subjected to a large rotating load force, the relative position between the rotating seat 3 and the rotating base 2 will not change. The connection mode of the engagement teeth can greatly improve the rotating resistance between the two, and greatly improve the firmness compared with the design of the two being flat surfaces.

[0024] The rotating seat 3 is provided with a locking mechanism for fixing the rotating seat 3. The locking mechanism includes a first threaded rod 8, a first bevel gear 9, a second bevel gear 10, and a rotating rod 11. The first threaded rod 8 is arranged at the axial center of the rotating base 2 and the rotating seat 3, and the first bevel gear 9 is fixedly connected to one end of the first threaded rod 8 arranged inside the rotating base 2. The first threaded rod 8 is in transmission connection with the rotating seat 3 through threads. The rotating rod 11 is transversely arranged at the side of the rotating base 2, and the second bevel gear 10 is fixedly connected to one end of the rotating rod 11 close to the first bevel gear 9. The second bevel gear 10 is engaged with the first bevel gear 9. By rotating the rotating rod 11, the first bevel gear 9 and the first threaded rod 8 can be driven by the second bevel gear 10 to rotate, so that the rotating seat 3 can be driven to move by the threads outside the first threaded rod 8. The firmness between the rotating seat 3 and the rotating base 2 can be adjusted, the rotating seat 3 can be moved upward to rotate, and the rotating seat 3 can also be driven downward by the first threaded rod 8 to be locked with the rotating base 2, thereby ensuring the firmness between the two.

[0025] The upper surface of the rotating seat 3 is fixedly connected with a rectangular frame 4, the bottom of the rectangular frame 4 is fixedly installed on the upper surface of the rotating seat 3, the inside of the rectangular frame 4 is provided with a lifting mechanism, the lifting mechanism comprises a first speed reducer motor 12, a second threaded rod 13, a limiting frame 14, a lifting block 15 and a rectangular sleeve 16, the first speed reducer motor 12 is fixedly installed in the inside of the rectangular frame 4 and the second threaded rod 13 is connected with the output end of the first speed reducer motor 12 through a spline, the second threaded rod 13 is vertically rotatably connected in the middle of the rectangular frame 4, the bottom end of the limiting frame 14 is fixedly connected in the inside of the rectangular frame 4 and the second threaded rod 13 is rotatably connected in the middle of the limiting frame 14, the top of the limiting frame 14 is a cross type and the limiting rods are vertically arranged at the four corners, the lifting block 15 is a cross type and is fixedly connected with the bottom of the rectangular sleeve 16, the middle of the lifting block 15 is threadedly connected with the outside of the second threaded rod 13 and the four corners are all sleeved with the outside of the limiting frame 14, the rectangular sleeve 16 is inserted into the inside of the rectangular frame 4 and can move up and down in the inside, when the first speed reducer motor 12 drives the second threaded rod 13 to rotate, the lifting block 15 can be driven to rise or fall through the thread, so that the rectangular sleeve 16 and the fixing mechanism on the top thereof can be lifted, thereby the height of the cutter fixed in the fixing mechanism can be finely adjusted, and the height of the cutter can adapt to the height of the workpiece to be machined.

[0026] A slide rail seat 5 is arranged on the top of the lifting mechanism, the slide rail seat 5 is composed of a supporting seat and slide rails, the supporting seat is fixedly connected with the top end of the rectangular sleeve 16, the cross section of the slide rail is an inverted isosceles trapezoid and the number of the slide rails is two, the two slide rails are fixedly connected with the upper surface of the supporting seat and are symmetrically arranged with the vertical center line of the supporting seat as the axis of symmetry; the middle of the upper surface of the slide rail seat 5 is provided with a tooth groove 6, the top of the slide rail seat 5 is transversely slidably connected with a sliding block 7 and the inside of the sliding block 7 is provided with a fine adjustment mechanism, the sliding block 7 is composed of an upper sliding block and a lower sliding block which are fixedly connected with each other through bolts, the lower surface of the lower sliding block is provided with a sliding groove which is matched with the corresponding part of the slide rail, the lower sliding block is transversely slidably connected with the outside of the slide rail through the sliding groove at the bottom, and the slide rail can limit the movement of the sliding block 7, so that the sliding block 7 can only move transversely along the direction of the slide rail.

[0027] The fine adjustment mechanism is arranged between the upper sliding block and the lower sliding block, the fine adjustment mechanism is in transmission connection with the tooth groove 6, the fine adjustment mechanism comprises a second speed reducer motor 17, a worm 18, a worm wheel 19, a first spur gear 20 and a second spur gear 21, the second speed reducer motor 17 is fixedly installed in the inside of the upper sliding block and the output end is connected with the worm 18 through a spline, the first spur gear 20 is fixedly connected with one side of the worm wheel 19 and they are coaxially arranged, the worm wheel 19 is rotatably connected in the inside of the lower sliding block and is in transmission connection with the worm 18, the second spur gear 21 is in meshing with the first spur gear 20 and is rotatably connected in the inside of the lower sliding block, the bottom end of the second spur gear 21 penetrates through the lower surface of the lower sliding block and is in meshing with the tooth groove 6 on the slide rail seat 5;

[0028] The second speed reducer motor 17 drives the worm 18 to rotate forward or reverse, which can drive the worm wheel 19 to rotate forward or reverse, so that the first spur gear 20 drives the second spur gear 21 to rotate forward or reverse, the second spur gear 21 is engaged with the tooth groove 6 on the slide rail seat 5, so that the slide block 7 and the overall structure above it can move transversely along the direction of the slide rail on the slide rail seat 5, the diameter of the first spur gear 20 is smaller than the diameter of the second spur gear 21, and there is a large transmission ratio between the two, and the second speed reducer motor 17 can make the second spur gear 21 rotate more finely, and can finely adjust the depth of cut of the tool in the fixing mechanism, greatly improving the accuracy of tool cutting, avoiding tool damage, and ensuring the processing quality.

[0029] The upper surface of the slide block 7 is fixedly provided with a fixing mechanism for fixing the tool, the fixing mechanism comprises a fixing block 22 and a fixing bolt 23, the fixing block 22 is fixedly installed on the upper surface of the slide block 7, the upper surface of the fixing block 22 is threadedly connected with the fixing bolt 23 for fixing the tool, and the bottom of the fixing bolt 23 is threadedly arranged in the interior of the fixing block 22, the number of the fixing bolts 23 is several, and the several fixing bolts 23 are evenly arranged on the upper surface of the fixing block 22, the interior of the fixing block 22 is a hollow structure, two tools can be respectively inserted into the two sides of the fixing block 22, and the tools are locked and fixed by the fixing bolts 23 on the top.

[0030] In summary, the adjustable tool holder for numerical control lathe has the following use steps:

[0031] 1. After fixing and installing two tools on the two sides of the fixing block 22, drive the first speed reducer motor 12 to rotate the second threaded rod 13, drive the lifting block 15 and the rectangular sleeve 16 to lift, adjust the height of the tool to the accurate position, and then lock the first speed reducer motor 12;

[0032] 2. Then drive the second speed reducer motor 17 to drive the slide block 7 to move transversely on the slide rail seat 5 through the transmission action between the worm 18, the worm wheel 19, the first spur gear 20 and the second spur gear 21, and adjust the transverse position of the tool to the appropriate position;

[0033] 3. Then run the numerical control machine tool to process the workpiece, and also adjust the depth of cut of the tool through the fine adjustment mechanism during processing, so that the tool holder can accurately adjust the tool during processing, thereby facilitating the processing of workpieces of different sizes;

[0034] 4. When the tool needs to be replaced, the rotating seat 3 can be loosened between the rotating base 2 by rotating the rotating rod 11, so that the rotating seat 3 is rotated, the top fixing block 22 is quickly adjusted by 180 degrees, the tools on the two sides are switched, and the rotating seat 3 is locked by tightening the rotating rod 11, thereby greatly improving the efficiency of numerical control processing.

[0035] The above is only for the purpose of illustrating the present application, and it should be understood that the present application is not limited to the above examples, and various modifications in accordance with the present application are within the scope of the present application.

Claims

1. An adjustable tool holder for a numerical control lathe, comprising a sliding base (1) and a rotating base (2), characterized in that: The rotating base (2) is fixedly connected to the upper surface of the sliding base (1), and the top of the rotating base (2) is engaged with a rotating seat (3), the center part of the rotating seat (3) is provided with a locking mechanism which can be fixed, the upper surface of the rotating seat (3) is fixedly connected with a rectangular frame (4), and the inside of the rectangular frame (4) is provided with a lifting mechanism, the top of the lifting mechanism is provided with a sliding rail seat (5), the middle part of the upper surface of the sliding rail seat (5) is provided with a gear slot (6), the top of the sliding rail seat (5) is transversely and slidably connected with a sliding block (7), and the inside of the sliding block (7) is provided with a fine adjustment mechanism, the fine adjustment mechanism is in transmission connection with the gear slot (6), and the upper surface of the sliding block (7) is fixedly provided with a fixing mechanism for fixing a tool.

2. The adjustable tool holder for a CNC lathe according to claim 1, characterized in that: The upper surface of the rotating base (2) and the lower surface of the rotating seat (3) are provided with meshing teeth which can be engaged with each other, and the two are engaged with each other through the meshing teeth, and the bottom of the rectangular frame (4) is fixedly installed on the upper surface of the rotating seat (3) through bolts.

3. The adjustable tool holder for a CNC lathe according to claim 1, characterized in that: The locking mechanism comprises a first threaded rod (8), a first bevel gear (9), a second bevel gear (10) and a rotating rod (11), the first threaded rod (8) is arranged at the axial center of the rotating base (2) and the rotating seat (3), and the first bevel gear (9) is fixedly connected to one end of the first threaded rod (8) arranged in the inside of the rotating base (2), the first threaded rod (8) is in transmission connection with the rotating seat (3) through threads, the rotating rod (11) is transversely arranged at the side of the rotating base (2), and the end close to the first bevel gear (9) is fixedly connected with the second bevel gear (10), and the second bevel gear (10) is engaged with the first bevel gear (9).

4. The adjustable tool holder for a CNC lathe according to claim 1, characterized in that: The lifting mechanism comprises a first speed reducer (12), a second threaded rod (13), a limiting frame (14), a lifting block (15) and a rectangular sleeve (16), the first speed reducer (12) is fixedly installed in the inside of the rectangular frame (4), and the second threaded rod (13) is connected to the output end of the first speed reducer (12) through splines, the second threaded rod (13) is vertically and rotatably connected to the middle part of the rectangular frame (4), the bottom end of the limiting frame (14) is fixedly connected to the inside of the rectangular frame (4), and the second threaded rod (13) is rotatably connected to the middle part of the limiting frame (14), the lifting block (15) is cross-shaped and fixedly connected to the bottom of the rectangular sleeve (16), the middle part of the lifting block (15) is in threaded transmission connection with the outside of the second threaded rod (13), and the four corners are all sleeved with the outside of the limiting frame (14), and the rectangular sleeve (16) is inserted into the inside of the rectangular frame (4) and can move up and down in the inside.

5. The adjustable tool holder for a CNC lathe according to claim 1, wherein: The fine adjustment mechanism comprises a second speed reduction motor (17), a worm (18), a worm wheel (19), a first spur gear (20) and a second spur gear (21), the second speed reduction motor (17) is fixedly installed in the interior of the sliding block (7) and has the worm (18) connected through the spline at the output end, the first spur gear (20) is fixedly connected at one side of the worm wheel (19) and coaxially arranged, the worm wheel (19) is rotatably connected in the interior of the sliding block (7) and is in transmission connection with the worm (18), the second spur gear (21) is in mesh with the first spur gear (20) and is rotatably connected in the interior of the sliding block (7), the bottom end of the second spur gear (21) is threaded through the lower surface of the sliding block (7) and is in mesh with the tooth groove (6) on the sliding rail seat (5).

6. The adjustable tool holder for a CNC lathe according to claim 1, characterized in that: The fixing mechanism comprises a fixing block (22) and a fixing bolt (23), the fixing block (22) is fixedly installed on the upper surface of the sliding block (7) through the bolt, the upper surface of the fixing block (22) is in threaded connection with the fixing bolt (23) for fixing the cutter, the bottom of the fixing bolt (23) is threaded in the interior of the fixing block (22), the number of the fixing bolt (23) is several and the several fixing bolts (23) are equidistantly and uniformly arranged on the upper surface of the fixing block (22).

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