Chip-entrainment-preventing mechanism
By designing an anti-chip entrainment mechanism on a CNC lathe, and utilizing a swing arm and lower roller protection device, the problem of chip entrainment affecting the positioning accuracy of the center rest and the surface quality of the parts is solved, thus realizing automatic chip discharge and protection of the center rest.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2026-05-19
AI Technical Summary
During machining, the center rest of a CNC lathe is prone to getting caught in chips, which affects positioning accuracy and the surface quality of the parts.
A chip-prevention mechanism was designed, including a swing arm roller protection device and a lower roller protection device. The swing arm roller brush head and the lower roller brush head contact the chips before they come into contact with the workpiece, preventing the chips from being rolled in. Combined with the use of cutting fluid, the chips are automatically discharged.
It effectively prevents chips from being rolled into the contact surface between the roller and the workpiece, maintains the positioning accuracy of the center rest and the surface quality of the parts, and adapts to the processing needs of workpieces of different sizes.
Smart Images
Figure CN118682551B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of CNC lathe machining, specifically to a chip-prevention mechanism. Background Technology
[0002] The center rest on CNC lathes is prone to chipping during machining, affecting its positioning accuracy and the surface quality of the parts. Existing center rests are equipped with simple adjustable chip scrapers and water spray structures, but to prevent the chip scraper from rubbing against the workpiece, a certain gap still exists, allowing smaller chips to still get caught in the center rest. Summary of the Invention
[0003] (a) Technical problems to be solved
[0004] The technical problem to be solved by the present invention is to provide an anti-chip entrainment mechanism to solve the problem that the contact surface between the chip entrainment roller and the workpiece affects the positioning accuracy of the center frame and the surface quality of the parts.
[0005] (II) Technical Solution
[0006] To solve the above technical problems, the present invention provides an anti-chip entrapment mechanism, wherein swing arms 2 are provided on the left and right sides above the machine body 1, and a lower roller arm 16 is provided in the middle of the upper part of the machine body 1 and between the two swing arms 2. The anti-chip entrapment mechanism includes: a swing arm roller protection device and a lower roller protection device.
[0007] The swing arm roller protection device includes: a guard plate 4, a swing arm roller brush head pressure plate 5, a liquid outlet 6, and a swing arm roller brush head 7.
[0008] Two protective plates 4 are provided, symmetrically fixed and attached to the top of the two swing arms 2. Each protective plate 4 is connected to a swing arm roller brush head pressure plate 5. The upper part of the swing arm roller brush head pressure plate 5 has an outlet 6, and a swing arm roller brush head 7 is embedded inside.
[0009] The lower roller protection device includes: a lower roller brush head 10, a lower roller protection brush 11, a lower roller brush head pressure plate 12, a lower roller liquid outlet 13, and a lower guard plate 15.
[0010] A lower roller is provided above the lower roller arm 16. A lower guard plate 15 is fixed between the outside of the lower roller and the lower roller arm 16. A lower roller brush head pressure plate 12 and a lower roller protective brush 11 are connected to the lower guard plate 15. A lower roller liquid outlet 13 is opened on the lower roller brush head pressure plate 12, and a lower roller brush head 10 is embedded inside.
[0011] When the workpiece 9 is placed in, the machine tool drives the center frame to clamp, the swing arm 2 swings towards the center, the lower roller arm 16 extends, and drives the three rollers 3 to contact the workpiece 9. Under the restriction of the swing arm roller brush head pressure plate 5, the swing arm roller brush head 7 contacts the workpiece 9 before the rollers 3. The contact area of the swing arm roller brush head 7 is outside the contact area between the rollers 3 and the workpiece 9. Before the chips roll into the contact area between the rollers 3 and the workpiece 9, they contact the swing arm roller brush head 7 and are brushed off the surface of the workpiece 9, thus completing the protection of the rollers 3.
[0012] The lower roller brush head 10 contacts the workpiece 9 before the lower roller. The contact area of the lower roller brush head 10 is outside the contact area between the lower roller and the workpiece 9. The chips contact the lower roller brush head 10 before rolling into the contact area between the roller 3 and the workpiece 9 and are brushed off the workpiece surface, thus completing the axial protection of the lower roller.
[0013] The lower roller protective brush 11 is always in contact with the workpiece 9, and radially protects the chips on the surface of the workpiece 9 from being rolled into the lower roller.
[0014] The guard plate 4 is connected to the swing arm 2 by screws.
[0015] The lower guard plate 15 and the lower roller arm 16 are connected by screws;
[0016] The lower guard plate 15 is connected to the lower roller protective brush 11 and the lower roller brush head pressure plate 12 by screws.
[0017] The swing arm roller brush head pressure plate 5 is movably connected to the swing arm roller brush head adjustment block 8 via a spring.
[0018] The spring, through clamping force, causes the swing arm roller brush head adjusting block 8 to adjust the angle between the swing arm roller brush head 7 and the axis of the workpiece 9.
[0019] The lower roller brush head pressure plate 12 is movably connected to the lower roller brush head adjustment block 14 via a spring.
[0020] The spring, through its clamping force, causes the lower roller brush head adjusting block 14 to adjust the angle between the lower roller brush head 10 and the axis of the workpiece 9.
[0021] (III) Beneficial Effects
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] 1) It can scrape off all kinds of chips without getting them into the contact surface between the roller and the workpiece, and the chips do not accumulate.
[0024] 2) It can protect one or more rollers of the center frame to accommodate workpieces of different sizes;
[0025] 3) Protect both the axial and radial sides of the lower roller. Attached Figure Description
[0026] Figure 1 This is a front view of the structure of the present invention;
[0027] Figure 2 This is a top view of the structure of the present invention. Detailed Implementation
[0028] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.
[0029] This embodiment provides a chip-prevention mechanism. The upper left and right sides of the machine body 1 are provided with swing arms 2, and the upper middle part of the machine body 1 and between the two swing arms 2 are provided with a lower roller arm 16. The chip-prevention mechanism includes: a swing arm roller protection device and a lower roller protection device.
[0030] The swing arm roller protection device includes: a guard plate 4, a swing arm roller brush head pressure plate 5, a liquid outlet 6, and a swing arm roller brush head 7.
[0031] Two protective plates 4 are provided, symmetrically fixed and attached to the top of the two swing arms 2. Each protective plate 4 is connected to a swing arm roller brush head pressure plate 5. The upper part of the swing arm roller brush head pressure plate 5 has an outlet 6, and a swing arm roller brush head 7 is embedded inside.
[0032] The lower roller protection device includes: a lower roller brush head 10, a lower roller protection brush 11, a lower roller brush head pressure plate 12, a lower roller liquid outlet 13, and a lower guard plate 15.
[0033] A lower roller is provided above the lower roller arm 16. A lower guard plate 15 is fixed between the outside of the lower roller and the lower roller arm 16. A lower roller brush head pressure plate 12 and a lower roller protective brush 11 are connected to the lower guard plate 15. A lower roller liquid outlet 13 is opened on the lower roller brush head pressure plate 12, and a lower roller brush head 10 is embedded inside.
[0034] When the workpiece 9 is placed in, the machine tool drives the center frame to clamp, the swing arm 2 swings towards the center, the lower roller arm 16 extends, and drives the three rollers 3 to contact the workpiece 9. Under the restriction of the swing arm roller brush head pressure plate 5, the swing arm roller brush head 7 contacts the workpiece 9 before the rollers 3. The contact area of the swing arm roller brush head 7 is outside the contact area between the rollers 3 and the workpiece 9. Before the chips roll into the contact area between the rollers 3 and the workpiece 9, they contact the swing arm roller brush head 7 and are brushed off the surface of the workpiece 9, thus completing the protection of the rollers 3.
[0035] The lower roller brush head 10 contacts the workpiece 9 before the lower roller. The contact area of the lower roller brush head 10 is outside the contact area between the lower roller and the workpiece 9. The chips contact the lower roller brush head 10 before rolling into the contact area between the roller 3 and the workpiece 9 and are brushed off the workpiece surface, thus completing the axial protection of the lower roller.
[0036] The lower roller protective brush 11 is always in contact with the workpiece 9, and radially protects the chips on the surface of the workpiece 9 from being rolled into the lower roller.
[0037] The guard plate 4 is connected to the swing arm 2 by screws.
[0038] The lower guard plate 15 and the lower roller arm 16 are connected by screws;
[0039] The lower guard plate 15 is connected to the lower roller protective brush 11 and the lower roller brush head pressure plate 12 by screws.
[0040] The swing arm roller brush head pressure plate 5 is movably connected to the swing arm roller brush head adjustment block 8 via a spring.
[0041] The spring, through clamping force, causes the swing arm roller brush head adjusting block 8 to adjust the angle between the swing arm roller brush head 7 and the axis of the workpiece 9.
[0042] The lower roller brush head pressure plate 12 is movably connected to the lower roller brush head adjustment block 14 via a spring.
[0043] The spring, through its clamping force, causes the lower roller brush head adjusting block 14 to adjust the angle between the lower roller brush head 10 and the axis of the workpiece 9.
[0044] The mechanism can use a spring to press the brush head to control the contact force between the brush head and the workpiece. The brush head can be tilted at an adjustable angle so that the chips are automatically discharged as the workpiece rotates. The mechanism can be connected to a cutting fluid line to use cutting fluid to flush the brush and remove the remaining chips.
[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A chip-prevention mechanism, wherein swing arms (2) are provided on the left and right sides above the machine body (1), and a lower roller arm (16) is provided in the middle of the upper part of the machine body (1) and between the two swing arms (2), characterized in that, The anti-chip entrapment mechanism includes: a swing arm roller protection device and a lower roller protection device; The swing arm roller protection device includes: a guard plate (4), a swing arm roller brush head pressure plate (5), a liquid outlet (6), and a swing arm roller brush head (7); Two guard plates (4) are provided and are symmetrically fixed to the top of the two swing arms (2). Each guard plate (4) is connected to a swing arm roller brush head pressure plate (5). The upper part of the swing arm roller brush head pressure plate (5) has an outlet (6) and a swing arm roller brush head (7) is embedded inside. The lower roller protection device includes: a lower roller brush head (10), a lower roller protection brush (11), a lower roller brush head pressure plate (12), a lower roller liquid outlet (13), and a lower guard plate (15); A lower roller is provided above the lower roller arm (16). A lower guard plate (15) is fixed between the outside of the lower roller and the lower roller arm (16). A lower roller brush head pressure plate (12) and a lower roller protective brush (11) are connected to the lower guard plate (15). A lower roller liquid outlet (13) is opened on the lower roller brush head pressure plate (12), and a lower roller brush head (10) is embedded inside. When the workpiece (9) is placed in, the machine tool drives the center frame to clamp, the swing arm (2) swings towards the center, the lower roller arm (16) extends, and drives the three rollers (3) to contact the workpiece (9). Under the restriction of the swing arm roller brush head pressure plate (5), the swing arm roller brush head (7) contacts the workpiece (9) before the rollers (3). The contact area of the swing arm roller brush head (7) is outside the contact area between the rollers (3) and the workpiece (9). Before the chips roll into the contact area between the rollers (3) and the workpiece (9), they contact the swing arm roller brush head (7) and are brushed off the surface of the workpiece (9), thus completing the protection of the rollers (3). The lower roller brush head (10) contacts the workpiece (9) before the lower roller. The contact area of the lower roller brush head (10) is outside the contact area between the lower roller and the workpiece (9). The chips contact the lower roller brush head (10) before rolling into the contact area between the roller (3) and the workpiece (9) and are brushed off the workpiece surface, thus completing the axial protection of the lower roller. The lower roller protective brush (11) is always in contact with the workpiece (9) and radially protects the chips on the surface of the workpiece (9) from being rolled into the lower roller.
2. The anti-chip entrainment mechanism as described in claim 1, characterized in that, The guard plate (4) and the swing arm (2) are connected by screws.
3. The anti-chip entrapment mechanism as described in claim 2, characterized in that, The lower guard plate (15) and the lower roller arm (16) are connected by screws; The lower guard plate (15) is connected to the lower roller protection brush (11) and the lower roller brush head pressure plate (12) by screws.
4. The anti-chip entrainment mechanism as described in claim 3, characterized in that, The inside of the swing arm roller brush head pressure plate (5) is movably connected to the swing arm roller brush head adjustment block (8) by a spring; The spring, through its clamping force, causes the swing arm roller brush head adjusting block (8) to adjust the angle between the swing arm roller brush head (7) and the axis of the workpiece (9).
5. The anti-chip entrainment mechanism as described in claim 4, characterized in that, The lower roller brush head pressure plate (12) is movably connected to the lower roller brush head adjustment block (14) via a spring; The spring, through its clamping force, causes the lower roller brush head adjusting block (14) to adjust the angle between the lower roller brush head (10) and the axis of the workpiece (9).