Lead screw locking dustproof structure

Abstract

The utility model discloses a screw rod locking dustproof structure, including frame body, motor mounting seat, screw rod, bearing seat, bearing, bearing end cover plate, inverted groove ring cover, locking nut, bolt, the frame body is strip mounting seat, and the upper surface is equipped with recessed cavity, and the both ends of recessed cavity are equipped with bearing installation riser, is equipped with bearing hole on bearing installation riser, bearing seat includes outside limit fixed plate, and is equipped with mounting hole on outside limit fixed plate, the both ends of screw rod are equipped with bearing after the cover and are arranged in bearing seat, and are rotatably connected with bearing seat, the outside of outside limit fixed plate is fixed with bearing end cover plate, still be equipped with inverted groove ring cover between bearing end cover plate and screw rod. The utility model discloses a screw rod locking dustproof structure, and its structure design is simple and reasonable, and stable and reliable operation, can effectively prevent dust, and prevent the chip, avoid dust, chip to enter the connecting portion of screw rod and bearing, avoid dust, chip to enter the recessed cavity of frame body.

Description

Technical Field

[0001] This utility model relates to the field of lathe and milling machine technology, and in particular to a lead screw locking and dustproof structure. Background Technology

[0002] Lathes and milling machines typically employ techniques such as telescopic protective covers, folding bellows covers, helical spring steel belt covers, and sealing rings to prevent dust and chips.

[0003] Dust prevention of lathe lead screws is a key measure to ensure machine tool accuracy and extend service life. However, the lead screw of lathes and milling machines is a power transmission component, and it is rotatably connected to the machine frame (usually connected to the machine frame by a bearing). There is a gap at the connection between the lead screw and the machine frame. Due to the rotatable nature of the lead screw, it is not possible to use telescopic or folding protective covers to prevent dust and chips at the connection between the lead screw and the machine frame.

[0004] Therefore, how to prevent dust and chips from entering the connection between the lead screw and the machine frame (mounting base) is a problem that needs to be solved. This application discloses a lead screw locking dustproof structure, which is mainly used in interpolation Y-axis turning and milling composite CNC machine tools. It is the mounting base at the bottom of the machine tool tool holder assembly (power turret system) and is usually fixed to the machine tool frame at a 40-50 degree angle. Utility Model Content

[0005] The purpose of this utility model is to provide a screw locking dustproof structure with a simple and reasonable structural design and stable and reliable operation; it can effectively prevent dust and chips, and prevent dust and chips from entering the connection between the screw and the bearing; and prevent dust and chips from entering the cavity of the frame.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A screw locking dustproof structure includes a frame, a motor mounting base, a screw, a bearing housing, a bearing, a bearing end cover, a grooved ring, a locking nut, and a pin. The frame is a strip-shaped mounting base with a cavity on its upper surface and bearing mounting plates at both ends of the cavity; the bearing mounting plates are provided with bearing holes. The bearing housing includes an outer limiting and fixing plate with mounting holes. The bearing housing passes through the bearing hole, and its outer limiting and fixing plate is attached to the outside of the bearing mounting plate and fixed by screws.

[0007] The lead screw is fitted with bearings at both ends and then inserted into the bearing housing, where it is rotatably connected.

[0008] A bearing end cover plate is fixed to the outer side of the outer limiting and fixing plate; A grooved ring is also provided between the bearing end cover plate and the lead screw; The grooved ring is an annular sleeve with an L-shaped latch on its outer wall; the bearing end cover plate has an L-shaped latch on its outer wall; the bearing end cover plate is fitted onto the outer wall of the grooved ring, and the latch two engages with the latch one; there is a gap between the latch two and the latch one, which is an airflow channel and has an S-shaped folding interval.

[0009] The lead screw has threaded sections at both ends, and a locking nut is fitted on the threaded section; the locking nut is provided with a pin, which can limit and fix the connection between the locking nut and the lead screw.

[0010] The top of the frame is provided with a motor mounting base; the motor is fixed on the motor mounting base, and its output shaft is connected to a lead screw, which drives the lead screw to rotate.

[0011] Preferably, a lead screw sleeve is fitted onto the middle section of the lead screw, engaging with the lead screw sleeve for transmission. The rotating lead screw drives the lead screw sleeve to slide along the lead screw. A power tool turret is fixed to the top of the lead screw sleeve, and a tool disc is mounted on the power tool turret, with several cutting tools mounted on the tool disc. The tool disc is connected to a tool changer motor, which drives the tool disc to rotate to switch cutting tools.

[0012] Preferably, the top of the frame is provided with a slide rail; sliders are fixed on both sides of the bottom of the power turret, and the sliders are slidably connected to the slide rail.

[0013] Preferably, a folding bellows cover is provided between the power turret and the frame to seal the gap area between the power turret and the frame.

[0014] Brief description of the dust prevention principle: Because a lead screw sleeve is fitted on the lead screw, and after the lead screw sleeve is connected to the power turret, the gap area between the frame and the power turret is sealed by a folding bellows cover. Therefore, the upper surface of the cavity of the frame is sealed. The lead screw sleeve moves within the cavity, and the end face of the cavity has an exhaust channel (airflow channel) to ensure that the normal operation of the lead screw sleeve is not affected. However, conventional airflow channels cannot achieve the effect of dust prevention and chip prevention. Therefore, this application adopts an S-shaped folding airflow channel, which achieves a good dust prevention and chip prevention effect.

[0015] The beneficial effects of this utility model are: Its structural design is simple and reasonable, and its operation is stable and reliable; it can effectively prevent dust and chips, and prevent dust and chips from entering the connection between the lead screw and the bearing; and prevent dust and chips from entering the cavity of the frame. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a lead screw locking dustproof structure according to the present invention; Figure 2 This is a schematic diagram of a lead screw locking dustproof structure according to the present invention (slide rail omitted); Figure 3This is a schematic diagram of a screw locking dustproof structure according to the present invention (the slide rail, frame, and motor mounting base are omitted). Figure 4 for Figure 3 A cross-sectional view along the DD direction; Figure 5 for Figure 4 A close-up view of the bottom section; Figure 6 A schematic diagram of the bearing end cover plate and grooved ring sleeve; Figure 7 for Figure 6 Cross-sectional view along the BB direction; Figure 8 This is a schematic diagram of the grooved ring structure; Figure 9 This is a schematic diagram of the bearing end cover plate. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] like Figures 1-9 The diagram shows a screw locking dustproof structure, comprising a frame 1, a motor mounting base 2, a screw 3, a bearing housing 4, a bearing 5, a bearing end cover 6, a grooved ring 7, a locking nut 8, and a pin 9. The frame 1 is a strip-shaped mounting base with a cavity 10 on its upper surface. Bearing mounting plates 50 are provided at both ends of the cavity 10. Bearing mounting plates 50 are provided with bearing holes. The bearing housing 4 includes an outer limiting and fixing plate 41, which has a mounting hole. The bearing housing 4 passes through the bearing hole, and its outer limiting and fixing plate 41 is attached to the outside of the bearing mounting plate 50 and fixed by screws.

[0019] The lead screw 3 is fitted with bearings 5 ​​at both ends and then passes through the bearing seat 4, where it is rotatably connected to the bearing seat 4.

[0020] A bearing end cover plate 6 is fixedly provided on the outer side of the outer limiting and fixing plate 41; A grooved ring 7 is also provided between the bearing end cover plate 6 and the lead screw 3; The grooved ring sleeve 7 is an annular sleeve, and its outer wall is provided with a first latch 71 with an L-shaped cross section; the outer wall of the bearing end cover plate 6 is provided with a second latch 72 with an L-shaped cross section; the bearing end cover plate 6 is sleeved on the outer wall of the grooved ring sleeve 7, and the second latch 72 engages with the first latch 71; there is a gap between the second latch 72 and the first latch 71, which is an airflow channel, and is an S-shaped folding airflow channel 73.

[0021] The lead screw 3 has threaded sections 31 at both ends, and a locking nut 8 is fitted on the threaded section 31; the locking nut 8 is provided with a pin 9, which can limit and fix the connection between the locking nut 8 and the lead screw 3.

[0022] The top of the frame 1 is provided with a motor mounting base 2; the motor is fixed on the motor mounting base 2, and its output shaft is connected to the lead screw 3, which drives the lead screw 3 to rotate.

[0023] Preferably, a lead screw sleeve is fitted in the middle section of the lead screw 3, engaging with the lead screw sleeve for transmission. The rotating lead screw 3 drives the lead screw sleeve to slide along the lead screw 3. A power tool turret is fixed to the top of the lead screw sleeve, and a tool disc is provided on the power tool turret, with a plurality of tools on the tool disc. The tool disc is connected to a tool changing motor, which drives the tool disc to rotate to switch tools.

[0024] Preferably, the top of the frame 1 is provided with a slide rail 11; sliders are fixed on both sides of the bottom of the power turret, and the sliders are slidably connected to the slide rail 11.

[0025] Preferably, a folding bellows cover is provided between the power turret and the frame 1 to seal the gap area between the power turret and the frame 1.

[0026] Preferably, the end face of the locking nut 8 is in close contact with the end face of the grooved ring 7.

[0027] Brief description of the dustproof and chip-proof principle: Because a lead screw sleeve is fitted on the lead screw 3, and after the lead screw sleeve is connected to the power turret, the gap area between the frame 1 and the power turret is sealed by a folding bellows cover. Therefore, the upper surface of the cavity 10 of the frame 1 is in a sealed state. When the lead screw sleeve moves in the cavity 10, the end face of the cavity 10 has an exhaust channel (airflow channel) to avoid affecting the normal operation of the lead screw sleeve. However, conventional airflow channels cannot achieve the effect of dustproof and chip-proof. Therefore, this application adopts an S-shaped folding airflow channel to achieve the effect of exhaust and intake, while also achieving a good dustproof and chip-proof effect.

[0028] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. A lead screw locking dustproof structure, characterized in that: Includes frame, motor mounting base, lead screw, bearing housing, bearing, bearing end cover plate, grooved ring, lock nut, and pin; The frame is a strip-shaped mounting base with a cavity on its upper surface and bearing mounting plates at both ends of the cavity; the bearing mounting plates are provided with bearing holes. The bearing housing includes an outer limiting and fixing plate with mounting holes; the bearing housing passes through the bearing hole, and its outer limiting and fixing plate is attached to the outside of the bearing mounting plate and fixed by screws. The lead screw is fitted with bearings at both ends and then inserted into the bearing housing, where it is rotatably connected to the bearing housing. A bearing end cover plate is fixed to the outer side of the outer limiting and fixing plate; A grooved ring is also provided between the bearing end cover plate and the lead screw.

2. The lead screw locking dustproof structure according to claim 1, characterized in that: The grooved ring is an annular sleeve with an L-shaped latch on its outer wall; The outer wall of the bearing end cover plate is provided with two L-shaped latches; The bearing end cover is fitted onto the outer wall of the grooved ring, and the second latch engages with the first latch. There is a gap between the second latch and the first latch, which is an S-shaped reversing airflow channel.

3. The lead screw locking dustproof structure according to claim 2, characterized in that: The lead screw has threaded sections at both ends, and a locking nut is fitted on the threaded section; the locking nut is equipped with a pin.

4. The lead screw locking dustproof structure according to claim 3, characterized in that: The top of the frame is provided with a motor mounting base; the motor is fixed on the motor mounting base, and its output shaft is connected to a lead screw, which drives the lead screw to rotate.

5. The lead screw locking dustproof structure according to any one of claims 1-4, characterized in that: The middle section of the lead screw is fitted with a lead screw sleeve, which meshes with the lead screw sleeve for transmission. The rotating lead screw drives the lead screw sleeve to slide along the lead screw. The top of the lead screw sleeve is fixedly provided with a power turret, the power turret is provided with a cutter head, and the cutter head is provided with a number of cutters; The tool turret is connected to a tool changer motor, which drives the tool turret to rotate to switch tools.

6. The lead screw locking dustproof structure according to claim 5, characterized in that: The top of the frame is equipped with a slide rail; sliders are fixed on both sides of the bottom of the power turret, and the sliders are slidably connected to the slide rail.

7. The lead screw locking dustproof structure according to claim 5, characterized in that: A folding bellows cover is provided between the power turret and the frame to seal the gap area between the power turret and the frame.

8. The lead screw locking dustproof structure according to claim 5, characterized in that: The end face of the locking nut is in close contact with the end face of the grooved ring.

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