Numerical control self-centering center frame

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By designing the limitation, protection and chip removal components of CNC self-centering center frame, the problems of waste chip accumulation and chip splashing in machine tool processing are solved, and processing accuracy and operation safety are improved.

CN222986304UActive Publication Date: 2025-06-17TAIYUAN DERUI MASCH CO LTD

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Patent Information

Application Number: CN202422199252.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-09-09
Publication Date: 2025-06-17
Estimated Expiration: 2034-09-09

AI Technical Summary

Technical Problem

When machine tools process slender shaft parts, waste chips generated by processing accumulate on the surface of the parts, affecting the processing accuracy, and chip splashes may harm the health of the operator.

Method used

A CNC self-centering center frame is designed, including defining components, protection components and chip removal components. The defining assembly defines the parts by a rotating plate and an adjustment wheel, the protection assembly prevents chip splashing through the arc-shaped shield and the fan-shaped shield, and the defragment assembly cleans the waste chips on the surface of the part through the semicircle block and the return spring.

Benefits of technology

It effectively prevents chip splash, improves processing accuracy, and ensures the safety of operators. By cleaning up waste chips on the surface of the parts, the accuracy of subsequent processing is improved.

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Abstract

The utility model belongs to the field of machine tool machining, and particularly relates to a numerical control self-centering center frame which comprises a numerical control machine table, a limiting assembly is arranged at the front end of the numerical control machine table, and the limiting assembly comprises two rotating plates rotationally connected to the upper side and the lower side of the middle of the front end of the numerical control machine table. Adjusting wheels are rotationally connected to the close ends of the sides, away from the numerical control machine table, of the two rotating plates correspondingly, an extension rod is slidably connected into the center of the front end of the numerical control machine table, and protection assemblies are arranged at the upper end and the lower end of the numerical control machine table correspondingly. The two arc-shaped shielding plates are pushed to be close to each other, so that the front end of a machining area is shielded, at the moment, the two sets of fan-shaped shielding plates in the left-right direction shield the side face of the machining area, and the situation that cuttings generated in the machining area affect the safety of operators is avoided; and by adjusting the position of the semicircular block, the part makes contact with the semicircular block in the moving process, at the moment, sweeps on the surface of the part are removed, and therefore the subsequent machining precision is improved.

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Description

Technical Field

[0001] The utility model relates to the field of machine tool processing, in particular to a numerically controlled self-centering steady rest. Background Art

[0002] When machining slender shaft parts on a machine tool, in order to prevent the workpiece from bending and deforming due to force during machining, so as to ensure the machining accuracy, it is necessary to use a self-centering steady rest to limit the part. The numerically controlled self-centering steady rest has the function of automatic centering, and can automatically adjust the position of the support point according to the diameter of the workpiece, so that the axis of the workpiece is aligned with the axis of the main shaft of the machine tool. Through the numerical control system, the action of the steady rest can be accurately controlled to realize automatic machining.

[0003] At present, when machining shaft parts, the waste chips generated during machining will accumulate on the surface of the parts. Continuing machining at this time may affect the machining accuracy. At the same time, the chips generated during cutting will fly, thus affecting the health of the operator. Therefore, a numerically controlled self-centering steady rest is proposed for the above problems. Summary of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and avoid the problem that the waste chips cannot be effectively processed and affect machining, the utility model proposes a numerically controlled self-centering steady rest.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a numerically controlled self-centering steady rest, including a numerically controlled machine table, a limiting component is arranged at the front end of the numerically controlled machine table, the limiting component includes two rotating plates rotatably connected to the upper and lower sides of the middle of the front end of the numerically controlled machine table, adjusting wheels are rotatably connected to the adjacent ends of the two rotating plates away from the numerically controlled machine table, an extension rod is slidably connected to the inside of the center of the front end of the numerically controlled machine table, protection components are arranged at the upper and lower ends of the numerically controlled machine table, and chip removal components are arranged on the left and right sides of the front end of the numerically controlled machine table;

[0006] The protection component includes two hollow arc-shaped plates fixedly installed at the middle parts of the upper and lower ends of the numerically controlled machine table, an arc-shaped groove is opened at the top of the hollow arc-shaped plate, an arc-shaped shielding plate is slidably connected to the hollow arc-shaped plate, a convex block is fixedly installed at the top of the arc-shaped shielding plate, a first clamping groove is opened at the bottom of the front end of the convex block, a plug rod is slidably connected to the inside of the convex block, a pressure spring is fixedly connected to the rear end of the convex block, a clamping block is fixedly installed on the inner wall of the front end of the arc-shaped groove, and a second clamping groove is opened at the top of the clamping block.

[0007] Preferably, the arc-shaped groove penetrates through the top of the hollow arc-shaped plate, and the convex block is slidably connected to the inside of the arc-shaped groove.

[0008] Preferably, the arc-shaped baffle extends through the front end of the hollow arc-shaped plate to the outside of the hollow arc-shaped plate. The upper and lower arc-shaped baffles are close to each other to block the front of the processing area and prevent chips from splashing and causing safety hazards. One end of the pressure spring away from the bump is fixedly installed on the inner wall at the rear end of the arc-shaped groove. The block is adaptively clamped with the first clamping groove, and the insertion rod is adaptively clamped with the second clamping groove, which can limit the position of the arc-shaped baffle.

[0009] Preferably, the chip removal component includes two fixed rings fixedly installed on the left and right sides at the front end of the numerical control machine table. The middle part of the front end of the fixed ring is threadedly connected with a threaded rod. The rear end of the threaded rod is rotatably connected with a semi-circular block. A return spring is fixedly installed on the surface of the semi-circular block. An elastic rod is fixedly connected to the rear side of the semi-circular block. A sector-shaped baffle is fixedly installed on the surface of the fixed ring.

[0010] Preferably, there are two semi-circular blocks in each group. The two semi-circular blocks are respectively fixedly connected to the two ends of the return spring. One end of the elastic rod away from the semi-circular block is fixedly installed at the front end of the numerical control machine table. The two semi-circular blocks are sleeved on the surface of the shaft-like part. When the part moves inside the semi-circular block, the waste chips on the surface of the part can be cleaned.

[0011] Preferably, the sector-shaped baffle is fixedly installed on the side of the fixed ring away from the limiting component. There are two sector-shaped baffles symmetrically installed on the upper and lower sides of the fixed ring. The sector-shaped baffle inclines towards the center of the fixed ring. The two sector-shaped baffles can block the side of the processing area to prevent chips from splashing from the side and causing safety hazards.

[0012] The beneficial effects of the present utility model are as follows:

[0013] By pushing the two arc-shaped baffles closer to each other, the front end of the processing area is blocked. At this time, the two groups of sector-shaped baffles in the left and right directions block the sides of the processing area, preventing the chips generated in the processing area from affecting the safety of the operator.

[0014] By adjusting the position of the semi-circular block, the part contacts the semi-circular block during the movement. At this time, the waste chips on the surface of the part are pushed out, thereby improving the subsequent processing accuracy. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 Schematic three-dimensional structure diagram of the present utility model;

[0017] Figure 2 Schematic structure diagram of the limiting component and the protection component of the present utility model;

[0018] Figure 3 Schematic structure diagram of the protection component of the present utility model;

[0019] Figure 4 Schematic structure diagram of the chip removal component of the present utility model.

[0020] In the figure: 1, numerical control machine tool; 2, limiting component; 21, rotating plate; 22, adjusting wheel; 23, extension rod; 3, protection component; 31, hollow arc plate; 32, arc groove; 33, arc shielding plate; 34, convex block; 35, first card slot; 36, insertion rod; 37, pressure spring; 38, clamping block; 39, second card slot; 4, chip removal component; 41, fixed ring; 42, threaded rod; 43, semi-circular block; 44, return spring; 45, elastic rod; 46, sector shielding plate. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] The following further elaborates on this application with reference to Figure 1 —4,

[0023] This application embodiment discloses a numerically controlled self-centering steady rest. Refer to Figure 1 , a numerically controlled self-centering steady rest, including a numerical control machine tool 1. A limiting component 2 is provided at the front end of the numerical control machine tool 1. The limiting component 2 includes two rotating plates 21 rotatably connected to the upper and lower sides of the middle part of the front end of the numerical control machine tool 1. The adjacent ends of the two rotating plates 21 away from the numerical control machine tool 1 are both rotatably connected with adjusting wheels 22. An extension rod 23 is slidably connected to the inside of the center of the front end of the numerical control machine tool 1. Protection components 3 are provided at both the upper and lower ends of the numerical control machine tool 1. Chip removal components 4 are provided on both the left and right sides of the front end of the numerical control machine tool 1;

[0024] Refer to Figure 1 - Figure 3, the protection component 3 includes two hollow arc-shaped plates 31 fixedly installed in the middle of the upper and lower ends of the numerical control machine table 1. An arc-shaped groove 32 is opened at the top of the hollow arc-shaped plate 31. An arc-shaped shielding plate 33 is slidably connected to the hollow arc-shaped plate 31. A convex block 34 is fixedly installed at the top of the arc-shaped shielding plate 33. The arc-shaped groove 32 penetrates through the top of the hollow arc-shaped plate 31. The convex block 34 is slidably connected inside the arc-shaped groove 32. A first clamping groove 35 is opened at the bottom of the front end of the convex block 34. A plug rod 36 is slidably connected inside the convex block 34. A pressure spring 37 is fixedly connected to the rear end of the convex block 34. A clamping block 38 is fixedly installed on the inner wall of the front end of the arc-shaped groove 32. A second clamping groove 39 is opened at the top of the clamping block 38. The arc-shaped shielding plate 33 passes through the front end of the hollow arc-shaped plate 31 and extends to the outside of the hollow arc-shaped plate 31. The upper and lower two arc-shaped shielding plates 33 are close to each other to shield the front of the processing area and prevent chips from splashing and causing potential safety hazards. One end of the pressure spring 37 away from the convex block 34 is fixedly installed on the inner wall of the rear end of the arc-shaped groove 32. The clamping block 38 and the first clamping groove 35 are adaptively clamped, and the plug rod 36 and the second clamping groove 39 are adaptively clamped, so as to limit the position of the arc-shaped shielding plate 33.

[0025] Referring to Figure 1 and Figure 4 , the chip removal component 4 includes two fixed rings 41 fixedly installed on the left and right sides of the front end of the numerical control machine table 1. A threaded rod 42 is threadedly connected to the middle of the front end of the fixed ring 41. The rear end of the threaded rod 42 is rotatably connected to a semi-circular block 43. A return spring 44 is fixedly installed on the surface of the semi-circular block 43. An elastic rod 45 is fixedly connected to the rear side of the semi-circular block 43. There are two semi-circular blocks 43 in each group. The two semi-circular blocks 43 are respectively fixedly connected to the two ends of the return spring 44. One end of the elastic rod 45 away from the semi-circular block 43 is fixedly installed on the front end of the numerical control machine table 1. The two semi-circular blocks 43 are sleeved on the surface of the shaft-like part. When the part moves from inside the semi-circular block 43, the waste chips on the surface of the part can be cleaned. A sector-shaped shielding plate 46 is fixedly installed on the surface of the fixed ring 41. The sector-shaped shielding plate 46 is fixedly installed on the side of the fixed ring 41 away from the limiting component 2. There are two sector-shaped shielding plates 46 and they are symmetrically installed on the upper and lower sides of the fixed ring 41. The sector-shaped shielding plate 46 inclines towards the center of the fixed ring 41. The two sector-shaped shielding plates 46 can shield the sides of the processing area to prevent chips from splashing from the sides and causing potential safety hazards.

[0026] Working principle: The operator passes the part to be processed through the semi-circular block 43 and places it at the middle position in the front end of the numerical control machine tool 1. At this time, the driving rotating plate 21 rotates and drives the extension rod 23 to extend out of the numerical control machine tool 1. By adjusting the positions of the rotating plate 21 and the extension rod 23, the part is limited. Then, the operator pulls the upper and lower bumps 34, so that the bumps 34 drive the arc-shaped shielding plate 33 to slide inside the hollow arc-shaped plate 31. At this time, the arc-shaped shielding plate 33 moves towards the middle of the numerical control machine tool 1 until the two arc-shaped shielding plates 33 approach and fit each other. At this time, the clamping block 38 is clamped inside the first clamping groove 35. Then, the operator inserts the insertion rod 36 into the bump 34 until it is inserted into the second clamping groove 39. At this time, the position of the bump 34 is limited, and thus the position of the arc-shaped shielding plate 33 is limited. At this time, the arc-shaped shielding plate 33 shields the front of the processing area.

[0027] Then, the operator rotates the threaded rod 42. At this time, the threaded rod 42 pushes the rotating semi-circular block 43 to move until the axis of the part is located at the center of the circle of the semi-circular block 43. At this time, the two semi-circular blocks 43 fit on the surface of the part under the action of the resilience of the return spring 44. Then, when the part moves, it will slide inside the semi-circular block 43. At this time, the waste chips generated by the surface processing of the part are discharged, and the fan-shaped shielding plate 46 can shield the left and right sides of the processing area.

[0028] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A CNC self-centering center frame, characterized in that: The invention comprises a numerical control machine (1), wherein a limiting component (2) is arranged at the front end of the numerical control machine (1), wherein the limiting component (2) comprises two rotating plates (21) rotatably connected to the upper and lower sides of the middle part of the front end of the numerical control machine (1), and the two rotating plates (21) are rotatably connected to the regulating wheels (22) at the adjacent ends of the side away from the numerical control machine (1), and an extension rod (23) is slidably connected to the interior of the center of the front end of the numerical control machine (1), and the upper and lower ends of the numerical control machine (1) are provided with protection components (3), and the left and right sides of the front end of the numerical control machine (1) are provided with chip removal components (4); The protection component (3) comprises two hollow arc plates (31) fixedly mounted at the middle of the upper and lower ends of the numerical control machine (1); an arc groove (32) is provided at the top of the hollow arc plate (31); an arc shielding plate (33) is slidably connected to the hollow arc plate (31); a protrusion (34) is fixedly mounted on the top of the arc shielding plate (33); a first clamping groove (35) is provided at the bottom of the front end of the protrusion (34); an insertion rod (36) is slidably connected inside the protrusion (34); a pressure spring (37) is fixedly connected at the rear end of the protrusion (34); a clamping block (38) is fixedly mounted on the inner wall of the front end of the arc groove (32); and a second clamping groove (39) is provided at the top of the clamping block (38).

2. A CNC self-centering center frame according to claim 1, characterized in that: The arc-shaped groove (32) passes through the top of the hollow arc-shaped plate (31), and the protrusion (34) is slidably connected inside the arc-shaped groove (32).

3. A CNC self-centering center frame according to claim 2, characterized in that: The arc-shaped shielding plate (33) passes through the front end of the hollow arc-shaped plate (31) and extends to the outside of the hollow arc-shaped plate (31); one end of the pressure spring (37) away from the protrusion (34) is fixedly mounted on the inner wall of the rear end of the arc-shaped groove (32); the clamping block (38) and the first clamping groove (35) are adapted to be clamped together; and the insertion rod (36) and the second clamping groove (39) are adapted to be clamped together.

4. The CNC self-centering center frame according to claim 1, characterized in that: The chip removal assembly (4) comprises two fixing rings (41) fixedly mounted on the left and right sides of the front end of the numerical control machine (1); a threaded rod (42) is threadedly connected to the middle of the front end of the fixing ring (41); a semicircular block (43) is rotatably connected to the rear end of the threaded rod (42); a return spring (44) is fixedly mounted on the surface of the semicircular block (43); an elastic rod (45) is fixedly connected to the rear side of the semicircular block (43); and a fan-shaped shielding plate (46) is fixedly mounted on the surface of the fixing ring (41).

5. A CNC self-centering center frame according to claim 4, characterized in that: Each group of the semicircular blocks (43) includes two of them. The two semicircular blocks (43) are fixedly connected to the two ends of the return spring (44) respectively. One end of the elastic rod (45) away from the semicircular block (43) is fixedly mounted on the front end of the CNC machine (1).

6. A CNC self-centering center frame according to claim 4, characterized in that: The fan-shaped baffle plate (46) is fixedly mounted on a side of the fixing ring (41) away from the limiting assembly (2); there are two fan-shaped baffle plates (46) which are symmetrically mounted on the upper and lower sides of the fixing ring (41); and the fan-shaped baffle plates (46) are inclined toward the center of the fixing ring (41).