Adjusting device for tool clamp of numerically controlled lathe

Abstract

The utility model belongs to the technical field of numerical control lathes, and particularly relates to a numerical control lathe tool clamp adjusting device which comprises a mounting base, a locking nut, an outer lantern ring and an ER elastic chuck, the locking nut is located on the top of the mounting base, the inner side of the outer lantern ring is in threaded connection with the outer side of the locking nut, and the ER elastic chuck is located on the outer side of the outer lantern ring. The ER elastic chuck is movably connected with the inner side of the outer sleeve ring; when the internal thread ring and the external sleeve ring rotate anticlockwise, the distance between the internal thread ring and the external sleeve ring becomes farther and farther, but the distance between the internal thread ring and the external sleeve ring is fixed through the limitation of the limiting frame, so that the internal thread ring and the external sleeve ring are mutually limited; therefore, the purpose of limiting between the outer lantern ring and the locking nut is achieved, the situation that in the machining process, due to rotation of the mounting base and force between the tool and a machined part, the outer lantern ring is loosened, and the machining efficiency is affected is avoided, and the stability of the tool in the machining process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerical control lathes, and particularly relates to a tool fixture adjusting device for a numerical control lathe. Background Technique

[0002] A numerical control lathe is a highly automated machine tool that uses a digital control system to precisely control the movement and machining process of the lathe. It mainly processes through a turning tool, and the turning tool needs to be fixed by a fixture. The ER elastic collet is a commonly used clamping tool in a numerical control lathe. By placing the ER elastic collet inside the locking nut and then connecting the outer sleeve ring to the threads of the locking nut, the outer sleeve ring moves axially, causing the ER elastic collet to move towards the inside of the locking nut, thereby reducing the clamping aperture of the ER elastic collet and enabling the clamping of the turning tool. Since the connection method between the outer sleeve ring and the locking nut is relatively simple, during use, the outer sleeve ring is prone to loosening, which affects the fixing effect of the ER elastic collet on the turning tool and reduces the machining efficiency. Content of the Utility Model

[0003] The utility model provides a tool fixture adjusting device for a numerical control lathe, which has the characteristics that the inner thread ring and the outer sleeve ring will limit each other, achieving the purpose of limiting between the outer sleeve ring and the locking nut, and being beneficial to ensuring the stability of the tool during the machining process.

[0004] The utility model provides the following technical solution: including a mounting seat, a locking nut, an outer sleeve ring and an ER elastic collet, characterized in that: the locking nut is located on the top of the mounting seat, the inner side of the outer sleeve ring is threadedly connected to the outer side of the locking nut, the ER elastic collet is movably connected to the inner side of the outer sleeve ring, several adjustment grooves are provided on the outer side of the outer sleeve ring, a limiting frame is movably connected to the outer side of the outer sleeve ring, the limiting frame includes two connecting blocks, a limiting ring and two arc-shaped plates, the connecting blocks are matched with the adjustment grooves in size, the limiting ring is fixedly connected to one end of the two connecting blocks, and the size of the limiting ring is smaller than that of the outer sleeve ring. A connecting rod is provided on the outer side of the connecting block, the arc-shaped plate is located at the end of the connecting rod away from the connecting block, an external thread is provided on the outer side of the mounting seat, the direction of the external thread is opposite to that of the locking nut, an inner thread ring is provided on the outer side of the external thread, the inner side of the arc-shaped plate is attached to the outer side of the mounting seat, and the thickness of the inner thread ring is the same as the distance between the connecting rod and the mounting seat.

[0005] Wherein, a fixing block is fixedly connected to the outer side of the connecting block, and the end of the connecting rod away from the arc-shaped plate is fixedly connected to the bottom of the fixing block.

[0006] Wherein, the two connection blocks are opposite in position, and the inner side of the arc-shaped plate matches the outer side dimension of the mounting seat.

[0007] Wherein, a plurality of grooves are formed on the outer side of the internal thread ring, and the size of the locking nut is smaller than that of the internal thread ring.

[0008] Wherein, the thickness of the arc-shaped plate is greater than that of the connecting rod, and the connecting rod does not contact the mounting seat.

[0009] The beneficial effect of the present utility model is that when the internal thread ring and the outer sleeve ring rotate counterclockwise, the distance between the internal thread ring and the outer sleeve ring will become farther and farther. However, due to the limitation of the limiting frame, the distance between the internal thread ring and the outer sleeve ring is fixed. Therefore, the internal thread ring and the outer sleeve ring will limit each other, so as to achieve the purpose of limiting between the outer sleeve ring and the locking nut, and avoid the situation that the outer sleeve ring becomes loose due to the rotation of the mounting seat and the force between the tool and the workpiece during the processing, which affects the processing efficiency, and is beneficial to ensuring the stability of the tool during the processing.

[0010] The parts not involved in this device are the same as or can be implemented by the prior art. Description of the Drawings

[0011] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0012] Figure 2 is the present utility model Figure 1 The enlarged view of part A in;

[0013] Figure 3 is the present utility model Figure 1 The enlarged view of part B in;

[0014] Figure 4 is the structural schematic diagram of the limiting frame in the present utility model;

[0015] In the figure: 1, mounting seat; 11, external thread; 12, locking nut; 2, outer sleeve ring; 21, adjustment groove; 3, ER elastic chuck; 4, limiting frame; 41, connection block; 411, fixed block; 412, connecting rod; 42, limiting ring; 43, arc-shaped plate; 5, internal thread ring; 51, groove. Detailed Description of the Invention

[0016] Please refer to Figures 1-4, the present utility model provides the following technical solutions: It includes a mounting base 1, a lock nut 12, an outer sleeve ring 2, and an ER elastic collet 3, and is characterized in that: the lock nut 12 is located at the top of the mounting base 1, the inner side of the outer sleeve ring 2 is threadedly connected to the outer side of the lock nut 12, the ER elastic collet 3 is movably connected to the inner side of the outer sleeve ring 2, several adjustment slots 21 are provided on the outer side of the outer sleeve ring 2, a limit frame 4 is movably connected to the outer side of the outer sleeve ring 2, the limit frame 4 includes two connecting blocks 41, a limit ring 42, and two arc-shaped plates 43, the connecting block 41 is matched with the size of the adjustment slot 21, the limit ring 42 is fixedly connected to one end of the two connecting blocks 41, and the size of the limit ring 42 is smaller than that of the outer sleeve ring 2, a connecting rod 412 is provided on the outer side of the connecting block 41, the arc-shaped plate 43 is located at one end of the connecting rod 412 away from the connecting block 41, an external thread 11 is provided on the outer side of the mounting base 1, the external thread 11 is opposite to the direction of the lock nut 12, an internal thread ring 5 is provided on the outer side of the external thread 11, the inner side of the arc-shaped plate 43 is in contact with the outer side of the mounting base 1, and the thickness of the internal thread ring 5 is the same as the distance between the connecting rod 412 and the mounting base 1.

[0017] In this embodiment, it includes a mounting seat 1, a locking nut 12, an outer collar 2 and an ER elastic collet 3. The locking nut 12 is located at the top of the mounting seat 1. The inner side of the outer collar 2 is threadedly connected to the outer side of the locking nut 12. The ER elastic collet 3 is movably connected to the inner side of the outer collar 2. The ER elastic collet 3 is provided with a plurality of grooves, so that the ER elastic collet 3 has elasticity. When in use, the ER elastic collet 3 is placed inside the locking nut 12. The locking nut 12 and the ER elastic collet 3 both have a certain taper. Then the tool is screwed into the inner side of the ER elastic collet 3. Then the outer collar 2 is sleeved on the outer side of the ER elastic collet 3. By rotating the outer collar 2, the outer collar 2 is moved axially, which drives the ER elastic collet 3 to move axially. Because of the taper, Due to the existence of , the ER elastic chuck 3 is squeezed to produce elastic deformation, and the clamping aperture of the ER elastic chuck 3 will be reduced, thereby clamping the tool. A plurality of adjustment grooves 21 are provided on the outer side of the outer sleeve 2, and the outer sleeve 2 can be easily rotated by adjusting the grooves 21. The outer side of the outer sleeve 2 is movably connected to the limit frame 4, and the limit frame 4 includes two connecting blocks 41, a limit ring 42 and two arc plates 43. The connecting blocks 41 match the sizes of the adjustment grooves 21. When the outer sleeve 2 is connected to the locking nut 12, by placing the two connecting blocks 41 on the inner sides of two of the adjustment grooves 21, the limit ring 42 can be made to fit the top of the outer sleeve 2, and the arc plate 43 can fit the mounting seat 1. The limit ring 42 is fixedly connected to one end of the two connecting blocks 41, and the limit ring 4 2 matches the top taper of the outer sleeve 2. Therefore, when the two connecting blocks 41 are subjected to a pulling force from the bottom, the connection between the outer sleeve 2 and the connecting block 41 is made tighter through the connection of the limiting ring 42. The size of the limiting ring 42 is smaller than the outer sleeve 2. When the limiting ring 42 is subjected to a pulling force in the direction of the outer sleeve 2, the limiting ring 42 will not be separated from the outer sleeve 2, and the connection between the limiting ring 42 and the outer sleeve 2 is tighter. A connecting rod 412 is provided on the outer side of the connecting block 41. The connecting rod 412 is fixedly connected to the connecting block 41. The arc plate 43 is located at one end of the connecting rod 412 away from the connecting block 41. The arc plate 43 is fixedly connected to the connecting rod 412. When the connecting block 41 is connected to the adjustment slot 21, the position of the arc plate 43 will be aligned with the outer sleeve 21. Corresponding to the mounting seat 1, an outer side of the mounting seat 1 is provided with an external thread 11, and the direction of the external thread 11 is opposite to that of the locking nut 12. An internal thread ring 5 is provided on the outer side of the external thread 11, and the internal thread ring 5 is threadedly connected to the external thread 11, and an anti-slip washer is provided between the internal thread ring 5 and the external thread 11. When the outer ring 2 rotates counterclockwise, the outer ring 2 and the locking nut 12 will loosen, and the outer ring 2 will move upward, and when the internal thread ring 5 rotates counterclockwise, the internal thread ring 5 will move downward. Therefore, when the outer ring 2 and the internal thread ring 5 rotate counterclockwise, the distance between the outer ring 2 and the internal thread ring 5 will become longer, the inner side of the arc plate 43 is in contact with the outer side of the mounting seat 1, and the thickness of the internal thread ring 5 is the same as the distance between the connecting rod 412 and the mounting seat 1.After the outer sleeve ring 2 and the locking nut 12 are connected to fasten the ER elastic chuck 3, by connecting the limit frame 4 to the outer sleeve ring 2, the two arc-shaped plates 43 can be located outside the mounting seat 1 and be in contact with the mounting seat 1. When the internal thread ring 5 is rotated downward, the bottom of the internal thread ring 5 will be in close contact with the top of the arc-shaped plate 43 to limit the arc-shaped plate 43. When the outer sleeve ring 2 becomes loose, it needs to be rotated counterclockwise and the distance between the outer sleeve ring 2 and the mounting seat 1 gradually increases. However, since the internal thread ring 5 limits the arc-shaped plate 43, the distance between the outer sleeve ring 2 and the mounting seat 1 cannot increase, so the outer sleeve ring 2 cannot be rotated counterclockwise to become loose. When the internal thread ring 5 and the outer sleeve ring 2 are rotated counterclockwise, the distance between the internal thread ring 5 and the outer sleeve ring 2 will become farther and farther. But through the limitation of the limit frame 4, the distance between the internal thread ring 5 and the outer sleeve ring 2 is fixed. Therefore, the internal thread ring 5 and the outer sleeve ring 2 limit each other, so as to achieve the purpose of limiting between the outer sleeve ring 2 and the locking nut 12, and avoid the situation that the outer sleeve ring 2 becomes loose due to the rotation of the mounting seat 1 and the force between the tool and the workpiece during the processing, which affects the processing efficiency, and is beneficial to ensuring the stability of the tool during the processing.

[0018] A fixing block 411 is fixedly connected to the outside of the connecting block 41, and one end of the connecting rod 412 far from the arc-shaped plate 43 is fixedly connected to the bottom of the fixing block 411; through the connection of the connecting rod 412 with the arc-shaped plate 43 and the fixing block 411, the distance between the arc-shaped plate 43 and the limit ring 42 is fixed.

[0019] The positions of the two connecting blocks 41 are opposite, and the inner side of the arc-shaped plate 43 matches the outer side size of the mounting seat 1; through the two connecting blocks 41, the force on the limit ring 42 is more uniform, avoiding the situation that the limit ring 42 slips off due to unilateral force.

[0020] A number of grooves 51 are formed on the outside of the internal thread ring 5, and the size of the locking nut 12 is smaller than that of the internal thread ring 5; through the grooves 51, it is convenient to rotate the internal thread ring 5. Before the limit frame 4 is connected to the outer sleeve ring 2, the internal thread ring 5 needs to be separated from the mounting seat 1 and moved to the outside of the locking nut 12, so as to avoid interference of the internal thread ring 5 with the downward movement of the arc-shaped plate 43.

[0021] The thickness of the arc-shaped plate 43 is greater than that of the connecting rod 412, and the connecting rod 412 does not contact the mounting seat 1; when the arc-shaped plate 43 is in contact with the mounting seat 1, the internal thread ring 5 will be located between the connecting rod 412 and the mounting seat 1. When the internal thread ring 5 moves towards the arc-shaped plate 43, it can limit the arc-shaped plate 43.

[0022] Working principle and usage process of the present utility model: When in use, first place the ER elastic chuck 3 inside the locking nut 12. Both the locking nut 12 and the ER elastic chuck 3 have a certain taper. Then screw the tool into the inside of the ER elastic chuck 3. Next, put the outer sleeve ring 2 on the outside of the ER elastic chuck 3. By rotating the outer sleeve ring 2 clockwise, the outer sleeve ring 2 moves axially, driving the ER elastic chuck 3 to move axially. Due to the existence of the taper, the ER elastic chuck 3 is squeezed to produce elastic deformation, and the clamping aperture of the ER elastic chuck 3 will shrink, thereby clamping the tool. Then place the two connecting blocks 41 inside two of the adjustment slots 21, so that the limit ring 42 can be in contact with the top of the outer sleeve ring 2. At the same time, the two arc-shaped plates 43 will be located outside the mounting seat 1 and in contact with the mounting seat 1. Then move the internal thread ring 5 from the outside of the locking nut 12 to the outside of the mounting seat 1. By rotating the internal thread ring 5 counterclockwise, the bottom of the internal thread ring 5 is closely attached to the top of the arc-shaped plate 43 to limit the arc-shaped plate 43. When the outer sleeve ring 2 rotates counterclockwise, it will become loose between the outer sleeve ring 2 and the locking nut 12, and the outer sleeve ring 2 will move upward. When the internal thread ring 5 rotates counterclockwise, the internal thread ring 5 will move downward. Therefore, when the outer sleeve ring 2 and the internal thread ring 5 rotate counterclockwise, the distance between the outer sleeve ring 2 and the internal thread ring 5 will become longer. Through the restriction of the limit frame 4, the distance between the internal thread ring 5 and the outer sleeve ring 2 is fixed. Therefore, the internal thread ring 5 and the outer sleeve ring 2 will limit each other, thereby achieving the purpose of limiting between the outer sleeve ring 2 and the locking nut 12.

Claims

1. A tool fixture adjustment device for a numerical control lathe, comprising a mounting base (1), a locking nut (12), an outer sleeve ring (2) and an ER elastic chuck (3), characterized in that: The locking nut (12) is located at the top of the mounting base (1). The inner side of the outer sleeve ring (2) is threadedly connected to the outer side of the locking nut (12). The ER collet (3) is movably connected to the inner side of the outer sleeve ring (2). A plurality of adjustment slots (21) are provided on the outer side of the outer sleeve ring (2). A limiting frame (4) is movably connected to the outer side of the outer sleeve ring (2). The limiting frame (4) includes two connecting blocks (41), a limiting ring (42) and two arc-shaped plates (43). The connecting block (41) matches the size of the adjustment slot (21). The limiting ring (42) is fixedly connected to one end of the two connecting blocks (41), and the size of the limiting ring (42) is smaller than that of the outer sleeve ring (2). A connecting rod (412) is provided on the outer side of the connecting block (41). The arc-shaped plate (43) is located at the end of the connecting rod (412) away from the connecting block (41). External threads (11) are provided on the outer side of the mounting base (1), and the direction of the external threads (11) is opposite to that of the locking nut (12). An internal thread ring (5) is provided on the outer side of the external threads (11). The inner side of the arc-shaped plate (43) is in contact with the outer side of the mounting base (1), and the thickness of the internal thread ring (5) is the same as the distance between the connecting rod (412) and the mounting base (1).

2. The adjustment device for the tool fixture of a numerically controlled lathe according to claim 1, wherein: A fixing block (411) is fixedly connected to the outer side of the connecting block (41). The end of the connecting rod (412) away from the arc-shaped plate (43) is fixedly connected to the bottom of the fixing block (411).

3. The adjustment device for the tool fixture of a numerically controlled lathe according to claim 2, characterized in that: The positions of the two connecting blocks (41) are opposite, and the inner side of the arc-shaped plate (43) matches the size of the outer side of the mounting base (1).

4. The CNC lathe tool fixture adjustment device according to claim 3, characterized in that: A plurality of grooves (51) are provided on the outer side of the internal thread ring (5), and the size of the locking nut (12) is smaller than that of the internal thread ring (5).

5. The adjustment device for the tool fixture of a CNC lathe according to claim 4, characterized in that: The thickness of the arc-shaped plate (43) is greater than that of the connecting rod (412), and the connecting rod (412) does not contact the mounting base (1).

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