Machine tool center carriage and method of use

Abstract

The application discloses a machine tool center bracket and a using method, which comprises a ring-shaped frame and a plurality of supporting components arranged on the ring-shaped frame, the supporting components are used for supporting workpieces located on the inner side of the ring-shaped frame, each supporting component comprises a sleeve, a main supporting claw and two auxiliary supporting claws; the sleeve is integrally arranged on the ring-shaped frame, and the sleeve is provided with a first adjusting component; the main supporting claw is movably sleeved in the sleeve, the first adjusting component is used for adjusting the position of the main supporting claw in the sleeve, the inner end of the main supporting claw towards the center of the ring-shaped frame is provided with an expansion piece, the distal end of the expansion piece is movably provided with a first roller, and the inner portion of the main supporting claw is provided with a second adjusting component; the two auxiliary supporting claws are movably and symmetrically arranged on the two sides of the main supporting claw, the second adjusting component is used for synchronously adjusting the included angle between the two auxiliary supporting claws and the main supporting claw, and the distal ends of the two auxiliary supporting claws are respectively movably provided with second rollers. In general, the application has the advantages of novel structure, convenient use, safety and stability and the like.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, and specifically relates to a machine tool center support and its usage method. Background Technology

[0002] A machine tool center support is a device used to fix a workpiece during machining, typically mounted at the center of the machine tool spindle. Its function is to support the workpiece, keeping it stable during machining and ensuring its machining accuracy and quality. A center support usually consists of a central support and two supports symmetrically distributed on either side of the central support. Both the central support and the supports are usually adjustable to accommodate workpieces of different sizes and shapes.

[0003] In turning, the center support plays a particularly important role. When the length of the workpiece is more than 25 times its diameter, the workpiece will bend and vibrate due to the decrease in rigidity. The center support can effectively support the workpiece and reduce vibration, thereby improving machining accuracy and stability.

[0004] However, because the support components of the central bracket need to contact the workpiece surface, friction occurs at the contact point when the workpiece rotates. Under the influence of rotational speed and time, a large amount of frictional heat is generated at the contact point, which not only affects the stress on the workpiece surface but also the service life of the support components. Currently, existing technologies typically use continuous spraying of lubricating oil or other substances onto the friction contact point for lubrication and cooling. This method is relatively wasteful of cooling materials, increasing the cost of use. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a machine tool center support and its usage method.

[0006] The technical solution of the present invention is: a machine tool center support, comprising a ring frame and a plurality of support assemblies disposed on the ring frame, wherein the support assemblies are used to support workpieces located inside the ring frame, and each support assembly comprises:

[0007] A sleeve is integrally mounted on the annular frame, with the axis of the sleeve facing the center of the annular frame, and a first adjustment component is provided on the sleeve;

[0008] The main support claw is movably sleeved inside the sleeve. The first adjustment component is used to adjust the position of the main support claw inside the sleeve. A telescopic member is provided inside the end of the main support claw facing the center of the ring frame. A first roller is movably provided at the far end of the telescopic member. A second adjustment component is provided inside the main support claw.

[0009] Two auxiliary support claws are movably and symmetrically arranged on both sides of the main support claw. The second adjustment component is used to synchronously adjust the included angle between the two auxiliary support claws and the main support claw. The distal ends of the two auxiliary support claws are respectively provided with second rollers.

[0010] A monitoring component is used to monitor the temperature of the first roller and the second roller, respectively.

[0011] The control component is connected to the monitoring component, the first adjustment component, the telescopic component, and the second adjustment component, respectively.

[0012] Further, the first adjustment component includes:

[0013] The bearing is coaxially fixedly mounted on the inner side of the outer end of the sleeve;

[0014] An adjusting screw is fixedly sleeved inside the bearing at one end, and an adjusting seat is fixedly provided at the end of the adjusting screw near the bearing.

[0015] A limiting groove is provided on the inner side of the sleeve;

[0016] A limiting screw is provided through the side of the sleeve, and the limiting screw is used to loosen or lock the main support claw.

[0017] Furthermore, the main support claw includes:

[0018] The connecting section has a spiral groove inside, and the adjusting screw is screwed into the spiral groove.

[0019] The support section is integrally disposed at one end of the connecting section away from the spiral groove. The telescopic component and the second adjustment component are respectively disposed inside the support section. The support section has an installation groove on its side.

[0020] A limiting strip is provided on the side of the connecting section and the supporting section. The limiting strip is movably engaged with the limiting groove to restrict the rotation of the main supporting claw.

[0021] Furthermore, the secondary support claw includes:

[0022] An arc arm is movably mounted in the mounting groove at one end via a pin, and a toothed ring is provided at one end of the arc arm near the pin.

[0023] Two support arms are fixedly installed at the other end of the arc arm at intervals, and a second roller is provided at the far end of each support arm.

[0024] Furthermore, the second adjustment component includes:

[0025] A hydraulic telescopic rod is installed inside the supporting section, and the hydraulic telescopic rod is connected to the control component;

[0026] The hydraulic telescopic rod has racks on both sides of its telescopic end, and the racks mesh with the toothed ring.

[0027] Furthermore, the annular frame includes a lower annular frame and an upper annular frame, both of which are semi-circular frames. One end of the lower annular frame is movably hinged to the upper annular frame, and the other end is locked by a locking member. The sleeve is respectively disposed on the lower annular frame and the upper annular frame.

[0028] Furthermore, the bottom of the ring frame is provided with a fixed base, the fixed base comprising:

[0029] The support frame is connected and installed below the lower ring frame;

[0030] A fixed lead screw is provided through the middle of the support frame, and a fixed nut is screwed onto the fixed lead screw located at the upper part of the support frame;

[0031] A fixing plate is fixedly installed at the lower end of the fixing screw.

[0032] Furthermore, the support frame is connected to the lower ring frame via an adjustable telescopic rod, which is used to adjust the height of the ring frame.

[0033] The working principle of this invention is as follows: Place the fixed base on the machine tool track, clamp the fixed plate under the track, rotate the fixed nut, adjust the length of the lower part of the fixed screw so that the fixed plate is clamped under the track, and fix the fixed base on the machine tool track. Then open the upper ring frame, clamp the workpiece on the machine tool chuck, and let the workpiece pass through the inner side of the ring frame. Close the upper ring frame and lock it. Adjust the height of the ring frame by adjusting the telescopic rod so that the center of the ring frame coincides with the center of the workpiece. Then rotate the adjusting seat to drive the adjusting screw to rotate, thereby adjusting the position of the main support claw in the sleeve so that multiple first rollers are all against the surface of the workpiece. Then lock the position of the main support claw by the limit screw. At this time, the machine tool can be turned on to drive the workpiece to rotate for processing.

[0034] When the workpiece is being processed, the workpiece surface comes into contact with and rubs against the first roller, generating heat. The monitoring component monitors the temperature of the first roller in real time. When the temperature exceeds a set threshold, the monitoring component sends a signal to the control component. At this time, the control component controls the extension and retraction of the hydraulic telescopic rod. Through the meshing of the rack and pinion, the arc arm of the secondary support claw rotates around the pin shaft, thereby causing the second roller to press against the workpiece surface. Then, the hydraulic telescopic rod locks, and the control component controls the telescopic component to retract the first roller, causing the first roller to release contact with the workpiece surface. When the monitoring component detects that the temperature of the second roller exceeds the set threshold, the first roller is switched back to contact the workpiece surface. The first and second rollers work alternately, which can avoid damage to the workpiece, the first roller, and the second roller due to excessive temperature without affecting the support of the workpiece.

[0035] Compared with existing technologies, the advantages of this invention are as follows: This invention provides a machine tool center support and its usage method. By setting auxiliary support claws on both sides of the main support claw, which can alternately support the main support claw, it avoids the generation of excessive heat when the rollers of the main support claw are in prolonged contact and friction with the workpiece surface. This prevents changes in workpiece surface stress or damage to the rollers. It replaces traditional lubricant cooling, saving material costs. Furthermore, a monitoring component is included to monitor the operating temperature of the rollers in real time. When the temperature exceeds a set threshold, the control component can automatically switch between the main and auxiliary support claws. The contact positions of the two rollers of the auxiliary support claws with the workpiece are different from those of the rollers of the main support claw, thus preventing stress changes caused by excessively high workpiece surface temperature. In summary, this invention has the advantages of novel structure, convenient use, and safety and stability. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the support component structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the support arm structure of the secondary support claw of the present invention.

[0039] Among them, 1-ring frame, 11-lower ring frame, 12-upper ring frame, 2-support assembly, 21-sleeve, 211-first adjusting assembly, 2111-bearing, 2112-adjusting screw, 2113-adjusting seat, 2114-limiting groove, 2115-limiting top screw, 22-main support claw, 221-telescopic component, 222-first roller, 223-second adjusting assembly, 2231-hydraulic telescopic rod, 223 2-Rack, 224-Connecting section, 2241-Helical groove, 225-Supporting section, 2251-Mounting groove, 226-Limiting strip, 23-Secondary support claw, 231-Second roller, 232-Arch arm, 233-Pin shaft, 234-Gear ring, 235-Support arm, 3-Workpiece, 4-Fixed base, 41-Support frame, 42-Fixed screw, 43-Fixed nut, 44-Fixed plate, 45-Adjustable telescopic rod. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1 To the attached Figure 3The specific embodiments of the present invention will be described in detail below. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] It should be noted that the circuit connections involved in this invention all adopt conventional circuit connection methods and do not involve any innovation.

[0043] Example: Figure 1 As shown, a machine tool center support includes a ring frame 1 and a plurality of support assemblies 2 disposed on the ring frame 1. The support assemblies 2 are used to support a workpiece 3 located inside the ring frame 1. Wherein:

[0044] like Figure 2As shown, each support assembly 2 includes a sleeve 21, a main support claw 22, two auxiliary support claws 23, a monitoring assembly, and a control assembly. The sleeve 21 is integrally mounted on the annular frame 1, with its axis pointing towards the center of the annular frame 1. A first adjustment assembly 211 is provided on the sleeve 21, which includes a bearing 2111, an adjusting screw 2112, a limiting groove 2114, and a limiting top screw 2115. The bearing 2111 is coaxially fixedly mounted on the inner side of the outer end of the sleeve 21. One end of the adjusting screw 2112 is fixedly sleeved inside the bearing 2111. An adjusting seat 2113 is fixedly provided at one end near the bearing 2111; a limiting groove 2114 is provided on the inner side of the sleeve 21; a limiting screw 2115 is provided through the sleeve 21 on the side, and the limiting screw 2115 is used to loosen or lock the main support claw 22; the main support claw 22 is movably sleeved in the sleeve 21, and the first adjusting component 211 is used to adjust the position of the main support claw 22 in the sleeve 21. A telescopic member 221 is provided inside the end of the main support claw 22 facing the center of the ring frame 1, and a first roller 222 is movably provided at the distal end of the telescopic member 221. The main support claw 22 includes a connecting section 224, a support section 225, and a limiting strip 226. The connecting section 224 has a spiral groove 2241, and an adjusting screw 2112 is screwed into the spiral groove 2241. The support section 225 is integrally disposed at the end of the connecting section 224 opposite to the spiral groove 2241. The telescopic component 221 and the second adjusting component 223 are respectively disposed inside the support section 225. The support section 225 has a mounting groove 2251 on its side. The limiting strip 226 is disposed on the sides of the connecting section 224 and the support section 225, limiting movement. Strip 226 is movably engaged with limiting groove 2114 to limit the rotation of main support claw 22; two auxiliary support claws 23 are movably and symmetrically arranged on both sides of main support claw 22; the second adjusting component 223 is used to synchronously adjust the included angle between the two auxiliary support claws 23 and main support claw 22; the distal ends of the two auxiliary support claws 23 are respectively provided with second rollers 231; the auxiliary support claw 23 includes an arc arm 232 and two support arms 235; one end of the arc arm 232 is movably disposed in the mounting groove 2251 through pin 233; a toothed ring 234 is provided at one end of the arc arm 232 near the pin 233; Figure 3 As shown, two support arms 235 are fixedly installed at the other end of the arc arm 232 at intervals, and a second roller 231 is provided at the far end of each support arm 235; the second adjustment component 223 includes a hydraulic telescopic rod 2231 and a rack 2232. The hydraulic telescopic rod 2231 is installed inside the support section 225 and is connected to the control component; racks 2232 are provided on both sides of the telescopic end of the hydraulic telescopic rod 2231, and the racks 2232 mesh with the toothed ring 234; the monitoring component is used to monitor the temperature of the first roller 222 and the second roller 231 respectively; the control component is connected to the monitoring component, the first adjustment component 211, the telescopic component 221, and the second adjustment component 223 respectively;

[0045] The ring frame 1 includes a lower ring frame 11 and an upper ring frame 12, both of which are semi-circular frames. One end of the lower ring frame 11 and the upper ring frame 12 are movably hinged, and the other end is locked by a locking device. Sleeves 21 are respectively set on the lower ring frame 11 and the upper ring frame 12. The bottom of the ring frame 1 is provided with a fixed base 4, which includes a support frame 41, a fixing screw 42 and a fixing plate 44. The support frame 41 is connected and set below the lower ring frame 11. The fixing screw 42 is arranged through the middle of the support frame 41, and a fixing nut 43 is screwed onto the fixing screw 42 located on the upper part of the support frame 41. The fixing plate 44 is fixedly set at the lower end of the fixing screw 42. The support frame 41 is connected to the lower ring frame 11 through an adjusting telescopic rod 45, which is used to adjust the height of the ring frame 1.

[0046] The working principle of the above embodiment is as follows: Place the fixed base 4 on the machine tool track, clamp the fixed plate 44 under the track, rotate the fixed nut 43, adjust the length of the lower part of the fixed screw 42 so that the fixed plate 44 is fixedly clamped under the track, and fix the fixed base 4 on the machine tool track. Then open the upper ring frame 12, clamp the workpiece 3 on the machine tool chuck, and let the workpiece 3 pass through the inner side of the ring frame 1. Close the upper ring frame 12 and lock it. Adjust the height of the ring frame 1 by adjusting the telescopic rod 45 so that the center of the ring frame 1 coincides with the center of the workpiece 3. Then rotate the adjusting seat 2113 to drive the adjusting screw 2112 to rotate, thereby adjusting the position of the main support claw 22 in the sleeve 21 so that multiple first rollers 222 are all against the surface of the workpiece 3. Then lock the position of the main support claw 22 by the limiting screw 2115. At this time, the machine tool can be turned on to drive the workpiece 3 to rotate for processing.

[0047] When workpiece 3 is rotated for processing, the surface of workpiece 3 comes into contact with and rubs against the first roller 222, generating heat. The monitoring component monitors the temperature of the first roller 222 in real time. When the temperature exceeds the set threshold, the monitoring component sends a signal to the control component. At this time, the control component controls the extension and retraction of the hydraulic telescopic rod 2231. Through the meshing of the rack 2232 and the toothed ring 234, the arc arm 232 of the secondary support claw 23 rotates around the pin shaft 233, thereby causing the second roller 231 to press against the surface of workpiece 3. Then the hydraulic telescopic rod 2231 is locked, and the control component controls the telescopic component 221 to drive the first roller 222 to retract, so that the first roller 222 is no longer in contact with the surface of workpiece 3. When the monitoring component detects that the temperature of the second roller 231 exceeds the set threshold, the first roller 222 is switched back to contact the surface of workpiece 3. The first roller 222 and the second roller 231 work alternately, which can avoid damage to workpiece 3, the first roller 222 and the second roller 231 due to excessive temperature without affecting the support of workpiece 3.

[0048] The specific models of the above electronic components are not specifically specified; any commercially available ordinary products can be selected, as long as they can meet the usage requirements of this invention.

[0049] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A machine tool center support, comprising a ring frame (1) and a plurality of support assemblies (2) disposed on the ring frame (1), the support assemblies (2) being used to support a workpiece (3) located inside the ring frame (1), characterized in that, Each of the aforementioned support components (2) includes: A sleeve (21) is integrally mounted on the annular frame (1), with the axis of the sleeve (21) facing the center of the annular frame (1), and a first adjustment component (211) is provided on the sleeve (21). The main support claw (22) is movably sleeved in the sleeve (21). The first adjustment component (211) is used to adjust the position of the main support claw (22) in the sleeve (21). The main support claw (22) has a telescopic component (221) inside one end facing the center of the ring frame (1). The telescopic component (221) has a first roller (222) movably mounted at the far end. The main support claw (22) has a second adjustment component (223) inside. Two auxiliary support claws (23) are symmetrically arranged on both sides of the main support claw (22). The second adjustment component (223) is used to synchronously adjust the angle between the two auxiliary support claws (23) and the main support claw (22). The distal ends of the two auxiliary support claws (23) are respectively provided with second rollers (231). A monitoring component is used to monitor the temperature of the first roller (222) and the second roller (231) respectively; The control component is connected to the monitoring component, the first adjustment component (211), the telescopic component (221), and the second adjustment component (223), respectively; The first adjustment component (211) includes: The bearing (2111) is coaxially fixed inside the outer end of the sleeve (21); An adjusting screw (2112) is fixedly sleeved inside the bearing (2111) at one end, and an adjusting seat (2113) is fixedly provided at the end of the adjusting screw (2112) near the bearing (2111). A limiting groove (2114) is provided on the inner side of the sleeve (21); A limiting screw (2115) is provided through the side of the sleeve (21). The limiting screw (2115) is used to loosen or lock the main support claw (22). The main support claw (22) includes: The connecting section (224) has a spiral groove (2241) inside, and the adjusting screw (2112) is screwed into the spiral groove (2241); The support section (225) is integrally disposed at one end of the connecting section (224) away from the spiral groove (2241). The telescopic component (221) and the second adjustment component (223) are respectively disposed inside the support section (225). The support section (225) has an installation groove (2251) on its side. A limiting strip (226) is provided on the side of the connecting section (224) and the supporting section (225). The limiting strip (226) is movably engaged with the limiting groove (2114) to limit the rotation of the main supporting claw (22). The secondary support claw (23) includes: The arc arm (232) is movably mounted in the mounting groove (2251) by a pin (233) at one end, and a toothed ring (234) is provided at one end of the arc arm (232) near the pin (233). Two support arms (235) are fixedly installed at the other end of the arc arm (232) at intervals, and each of the support arms (235) is provided with a second roller (231) at its far end. The second adjustment component (223) includes: A hydraulic telescopic rod (2231) is disposed inside the supporting section (225), and the hydraulic telescopic rod (2231) is connected to the control component; The rack (2232) is provided on both sides of the telescopic end of the hydraulic telescopic rod (2231), and the rack (2232) meshes with the toothed ring (234).

2. A machine tool center support as described in claim 1, characterized in that, The ring frame (1) includes a lower ring frame (11) and an upper ring frame (12). Both the lower ring frame (11) and the upper ring frame (12) are semi-circular frames. One end of the lower ring frame (11) and the upper ring frame (12) are movably hinged, and the other end is locked by a locking member. The sleeve (21) is respectively set on the lower ring frame (11) and the upper ring frame (12).

3. A machine tool center support as described in claim 2, characterized in that, The bottom of the ring frame (1) is provided with a fixed base (4), and the fixed base (4) includes: A support frame (41) is connected and disposed below the lower ring frame (11); A fixed lead screw (42) is provided through the middle of the support frame (41), and a fixed nut (43) is screwed onto the fixed lead screw (42) located on the upper part of the support frame (41). The fixing plate (44) is fixedly installed at the lower end of the fixing screw (42).

4. A machine tool center support as described in claim 3, characterized in that, The support frame (41) is connected to the lower ring frame (11) via an adjustable telescopic rod (45), which is used to adjust the height of the ring frame (1).

5. The method of using a machine tool center support as described in claim 4, characterized in that, Includes the following steps: Place the fixed base (4) on the machine tool track, clip the fixed plate (44) under the track, rotate the fixed nut (43), adjust the length of the lower part of the fixed screw (42) so that the fixed plate (44) is clipped under the track and the fixed base (4) is fixed on the machine tool track. Then open the upper ring frame (12), clamp the workpiece (3) on the machine tool chuck and let the workpiece (3) pass through the inner side of the ring frame (1). Close the upper ring frame (12) and lock it. Adjust the height of the ring frame (1) by adjusting the telescopic rod (45) so that the center of the ring frame (1) coincides with the center of the workpiece (3). The adjusting screw (2112) is rotated by rotating the adjusting seat (2113), thereby adjusting the position of the main support claw (22) in the sleeve (21), so that multiple first rollers (222) are all against the surface of the workpiece (3), and then the position of the main support claw (22) is locked by the limiting set screw (2115), and the machine tool is turned on to drive the workpiece (3) to perform rotation processing; When the workpiece (3) is rotated for processing, the surface of the workpiece (3) comes into contact with the first roller (222) and rubs against it, generating heat. The monitoring component will monitor the temperature of the first roller (222) in real time. When the temperature exceeds the set threshold, the monitoring component will send a signal to the control component. At this time, the control component controls the extension and retraction of the hydraulic telescopic rod (2231). Through the meshing of the rack (2232) and the toothed ring (234), the arc arm (232) of the secondary support claw (23) rotates around the pin shaft (233), so that the second roller (231) presses against the surface of the workpiece (3). Then the hydraulic telescopic rod (2231) is locked, and the control component controls the telescopic component (221) to drive the first roller (222) to retract, so that the first roller (222) is released from contact with the surface of the workpiece (3). When the monitoring component detects that the temperature of the second roller (231) exceeds the set threshold, it switches back to the first roller (222) to contact the surface of the workpiece (3). The first roller (222) and the second roller (231) work alternately, so as not to affect the support of the workpiece (3) and avoid high temperature from damaging the workpiece (3), the first roller (222) and the second roller (231).

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