Numerically controlled lathe automatic clamping fixture suitable for clamping thin-walled parts

Abstract

The invention relates to the technical field of numerical control lathe fixtures, in particular to an automatic clamping fixture of a numerical control lathe, which is suitable for clamping thin-walled parts. The numerical control lathe automatic clamping fixture suitable for clamping the thin-wall type parts comprises a cross-shaped bottom plate and an adapter sleeve fixedly installed on one side of the cross-shaped bottom plate, and a plurality of sliding grooves are evenly formed in the cross-shaped bottom plate. The multiple lead screws are rotationally installed in the multiple sliding grooves one by one, bevel pinions are fixedly installed at one ends of the multiple lead screws correspondingly, supporting and clamping mechanisms are arranged on the multiple lead screws correspondingly, each supporting and clamping mechanism comprises a supporting plate, one end of each supporting plate is in sliding fit with the corresponding sliding groove, and the other end of each supporting plate is in sliding fit with the corresponding sliding groove; a threaded through hole in threaded connection with the lead screw is formed in one end of the supporting plate, an inner supporting plate is installed on the outer side of the supporting plate, and a pressing and clamping piece is installed on the inner side of the supporting plate. The numerical control lathe automatic clamping fixture suitable for clamping the thin-walled parts has the advantages of being stable in clamping and not prone to deformation.

Description

Technical Field

[0001] The invention relates to the technical field of CNC lathe clamps, in particular to an automatic clamping clamp for a CNC lathe suitable for clamping thin-walled parts. Background Art

[0002] CNC lathes automatically process the parts to be processed according to the pre-programmed processing program. We compile the processing route, process parameters, tool movement trajectory, displacement, cutting parameters (spindle speed, feed rate, back cutting amount, etc.) and auxiliary functions (tool change, spindle forward and reverse, cutting fluid on and off, etc.) of the parts into a processing program sheet according to the instruction code and program format specified by the CNC machine tool, and then record the contents of this program sheet on the control medium (such as punched paper tape, magnetic tape, disk, bubble memory), and then input it into the CNC device of the CNC machine tool, so as to command the machine tool to process the parts.

[0003] Existing CNC lathes mostly use three-jaw chucks to clamp workpieces. However, for thin-walled parts, the wall thickness is relatively thin. If the thin-walled parts are clamped with a traditional three-jaw chuck, the parts are easily deformed during clamping, affecting the processing quality.

[0004] Therefore, it is necessary to provide a new automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an automatic clamping fixture for a CNC lathe which has stable clamping and is not easy to deform and is suitable for clamping thin-walled parts.

[0006] The automatic clamping fixture for a CNC lathe suitable for clamping thin-walled parts provided by the present invention comprises: a cross bottom plate, and a transfer sleeve fixedly installed on one side of the cross bottom plate, and a plurality of slide grooves are evenly opened on the cross bottom plate; A plurality of lead screws are provided, and the lead screws are rotatably installed in the plurality of slide grooves one by one, and a small bevel gear is fixedly installed at one end of the lead screws, and a clamping mechanism is provided on the lead screws, and the clamping mechanism includes a support plate, one end of the support plate is slidably matched with the slide groove, and one end of the support plate is provided with a threaded through hole connected with the lead screw thread, an inner support plate is installed on the outer side of the support plate, and a clamping piece is installed on the inner side of the support plate; The mounting seat is mounted on the cross bottom plate, and a driving shaft is mounted on the mounting seat. A large bevel gear is fixedly mounted on one end of the driving shaft, and the large bevel gear is meshed with a small bevel gear.

[0007] Preferably, the inner support plate is detachably connected to the support plate by bolts.

[0008] Preferably, the clamping member comprises a hydraulic rod, a top plate is fixedly mounted on the telescopic end of the hydraulic rod, a pressure plate is slidably inserted on the top plate, a plurality of limiting holes are evenly opened on the pressure plate, and a limiting pin which is plugged into the limiting hole is threadedly mounted on one end of the top plate.

[0009] Preferably, a sliding rod is fixedly mounted on the bottom end of the top plate, and one end of the sliding rod facing away from the top plate is inserted into a through groove formed in the support plate.

[0010] Preferably, an oblique support plate is fixedly welded to the inner side of the support plate, and a support wheel that contacts and cooperates with the cross bottom plate is installed at one end of the oblique support plate away from the support plate.

[0011] Preferably, a worm wheel is fixedly mounted on the other end of the driving shaft, a worm is rotatably mounted on the mounting seat, the worm is meshed with the worm wheel, and a servo motor for driving the worm to rotate is mounted on the mounting seat.

[0012] Compared with the related art, the automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts provided by the present invention has the following beneficial effects: 1. The present invention provides an automatic clamping fixture for a CNC lathe suitable for clamping thin-walled parts. A slide groove is provided on a cross bottom plate, a lead screw is provided in the slide groove, and a support and clamping mechanism is provided on the lead screw. The support and clamping mechanism cooperates with a support plate, an inner support plate, a clamping member, a hydraulic rod, a top plate, a pressure plate, a limit pin, a slide rod, a limit hole, an inclined support plate and a support wheel to facilitate the stable clamping of annular thin-walled parts. 2. A driving shaft is arranged on the mounting seat, and the driving shaft meshes with a large bevel gear and a small gear. When the servo motor drives the worm and worm wheel to rotate, several lead screws are driven to rotate synchronously, thereby realizing automatic centering clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic structural diagram of a preferred embodiment of an automatic clamping fixture for a CNC lathe suitable for clamping thin-walled parts.

[0014] Figure 2 A schematic structural diagram from another perspective of the automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts provided by the present invention.

[0015] Figure 3 This is a structural schematic diagram of a cross bottom plate provided by the present invention having a mounting seat installed thereon.

[0016] Figure 4 A structural schematic diagram of an inner support plate installed on the support plate provided by the present invention.

[0017] Figure 5A schematic structural diagram of a diagonal support plate installed on the support plate provided by the present invention.

[0018] Numbers in the figure: 1, cross base plate; 101, slide groove; 2, adapter sleeve; 3, lead screw; 31, small bevel gear; 4, support and clamping mechanism; 41, support plate; 42, inner support plate; 43, clamping piece; 431, hydraulic rod; 432, top plate; 433, pressure plate; 434, limit pin; 435, slide rod; 401, limit hole; 44, diagonal support plate; 45, support wheel; 5, mounting seat; 6, drive shaft; 61, large bevel gear; 62, worm wheel; 63, worm; 64, servo motor. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0021] See also Figures 1 to 5 The embodiment of the present invention provides an automatic clamping fixture for a CNC lathe suitable for clamping thin-walled parts, and the automatic clamping fixture for a CNC lathe suitable for clamping thin-walled parts comprises: A cross bottom plate 1, and a transfer sleeve 2 fixedly mounted on one side of the cross bottom plate 1, and a plurality of slide grooves 101 are evenly opened on the cross bottom plate 1; A plurality of lead screws 3 are provided, and the lead screws 3 are rotatably installed in the plurality of slide grooves 101 one by one, and a small bevel gear 31 is fixedly installed at one end of the lead screws 3, and a plurality of lead screws 3 are provided with a clamping mechanism 4, and the clamping mechanism 4 includes a support plate 41, one end of the support plate 41 is slidably matched with the slide groove 101, and one end of the support plate 41 is provided with a threaded through hole threadedly connected with the lead screw 3, an inner support plate 42 is installed on the outer side of the support plate 41, and a clamping member 43 is installed on the inner side of the support plate 41; The mounting seat 5 is mounted on the cross base plate 1 , and a driving shaft 6 is mounted on the mounting seat 5 . A large bevel gear 61 is fixedly mounted on one end of the driving shaft 6 . The large bevel gear 61 is meshed with the small bevel gear 31 .

[0022] A worm wheel 62 is fixedly mounted on the other end of the driving shaft 6 , a worm 63 is rotatably mounted on the mounting seat 5 , the worm 63 is meshed with the worm wheel 62 , and a servo motor 64 for driving the worm 63 to rotate is mounted on the mounting seat 5 .

[0023] It should be noted that: when in use, the adapter sleeve 2 is fixed by the three-jaw chuck of the CNC lathe, so as to be installed on the CNC lathe, and then the annular thin-walled part is placed on the cross base plate 1, and then the servo motor 64 is started to drive the worm 63 to rotate. When the worm 63 rotates, it engages with the worm wheel 62, thereby driving the drive shaft 6 to rotate. When the drive shaft 6 rotates, it drives the large bevel gear 61 to rotate synchronously. When rotating, the large bevel gear 61 engages with the small bevel gear 31, thereby driving several lead screws 3 to rotate synchronously, and when rotating, the support plate 41 is driven to slide along the slide groove 101. When the support plate 41 slides, it drives the inner support plate 42 to approach the annular thin-walled part until it contacts the inner wall of the annular thin-walled part to complete the inner support, and then the annular thin-walled part is pressed and fixed on the cross base plate 1 by the clamping piece 43 to complete the stable clamping.

[0024] In the embodiments of the present invention, please refer to Figures 1 to 5 , the inner support plate 42 is detachably connected to the support plate 41 by bolts; It should be noted that the inner support plate 42 can be manufactured according to the inner wall shape of the thin-walled part to maximize the contact area with the inner wall of the thin-walled part, thereby improving the stability of the inner support and avoiding local deformation.

[0025] In the embodiments of the present invention, please refer to Figures 1 to 5 The clamping member 43 comprises a hydraulic rod 431, a top plate 432 is fixedly mounted on the telescopic end of the hydraulic rod 431, a pressing plate 433 is slidably inserted on the top plate 432, a plurality of limiting holes 401 are evenly opened on the pressing plate 433, and a limiting pin 434 which is plugged and matched with the limiting hole 401 is threadedly mounted on one end of the top plate 432; It should be noted that when the clamp 43 is in use, after the inner support plate 42 supports the annular thin-walled part, the pressure plate 433 is pulled so that it just covers one end of the annular thin-walled part, and the extended length is less than the outer diameter of the annular thin-walled part. After adjustment, the limit pin 434 is inserted into the limit hole 401, and then the hydraulic rod 431 is controlled to drive the top plate 432 to approach the annular thin-walled part until the pressure plate 433 is driven to press the annular thin-walled part onto the cross bottom plate 1 to complete the clamping.

[0026] In the present embodiment, a slide bar 435 is fixedly mounted on the bottom end of the top plate 432, and one end of the slide bar 435 facing away from the top plate 432 is inserted into a through groove provided in the support plate 41. In this way, when clamping, the top plate 432 drives the slide bar 435 to slide synchronously in the support plate 41, thereby improving the stability of the movement, thereby improving the stability of the clamping, and avoiding shaking.

[0027] In the embodiments of the present invention, please refer to Figures 1 to 5A diagonal support plate 44 is fixedly welded to the inner side of the support plate 41, and a support wheel 45 that contacts and cooperates with the cross bottom plate 1 is installed at one end of the diagonal support plate 44 away from the support plate 41; It should be noted that: when the support plate 41 moves and supports the annular thin-walled parts, the support strength of the support plate 41 can be improved by utilizing the cooperation between the diagonal support plate 44 and the support wheel 45 .

[0028] The working principle of the automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts provided by the present invention is as follows: When in use, the adapter sleeve 2 is fixed by the three-jaw chuck of the CNC lathe, so as to be installed on the CNC lathe, and then the annular thin-walled part is placed on the cross bottom plate 1, and then the servo motor 64 is started to drive the worm 63 to rotate. When the worm 63 rotates, it meshes with the worm wheel 62, thereby driving the drive shaft 6 to rotate. When the drive shaft 6 rotates, it drives the large bevel gear 61 to rotate synchronously. When rotating, the large bevel gear 61 meshes with the small bevel gear 31, thereby driving several lead screws 3 to rotate synchronously, and when rotating, it drives the support plate 41 to slide along the slide groove 101, and the support plate 4 When sliding, the inner support plate 42 is driven to approach the annular thin-walled part until it contacts the inner wall of the annular thin-walled part to complete the inner support. After the inner support plate 42 supports the annular thin-walled part, the pressing plate 433 is pulled to make it just cover one end of the annular thin-walled part, and the extended length is less than the outer diameter of the annular thin-walled part. After adjustment, the limiting pin 434 can be inserted into the limiting hole 401, and then the hydraulic rod 431 is controlled to drive the top plate 432 to approach the annular thin-walled part until the pressing plate 433 is driven to press the annular thin-walled part onto the cross bottom plate 1 to complete the clamping.

[0029] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic clamping fixture for a CNC lathe suitable for clamping thin-walled parts, comprising: A cross bottom plate (1), and a transfer sleeve (2) fixedly mounted on one side of the cross bottom plate (1), wherein a plurality of slide grooves (101) are evenly arranged on the cross bottom plate (1); It is characterized by further comprising: A plurality of lead screws (3) are provided, each of the lead screws (3) being rotatably mounted in a plurality of slide grooves (101), and each of the lead screws (3) is fixedly mounted with a small bevel gear (31) at one end thereof, and each of the lead screws (3) is provided with a support mechanism (4), the support mechanism (4) comprising a support plate (41), one end of the support plate (41) being slidably matched with the slide groove (101), and one end of the support plate (41) being provided with a threaded through hole threadably connected to the lead screw (3), an inner support plate (42) being mounted on the outer side of the support plate (41), and a clamping member (43) being mounted on the inner side of the support plate (41); The mounting seat (5) is mounted on the cross base plate (1), and a driving shaft (6) is mounted on the mounting seat (5). A large bevel gear (61) is fixedly mounted on one end of the driving shaft (6), and the large bevel gear (61) is meshed with a small bevel gear (31).

2. The automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts according to claim 1 is characterized in that: The inner support plate (42) is detachably connected to the support plate (41) via bolts.

3. The automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts according to claim 1 is characterized in that: The clamping member (43) comprises a hydraulic rod (431), a top plate (432) being fixedly mounted on the telescopic end of the hydraulic rod (431), a pressing plate (433) being slidably inserted on the top plate (432), a plurality of limiting holes (401) being evenly formed on the pressing plate (433), and a limiting pin (434) being plugged into and matched with the limiting hole (401) being threadedly mounted on one end of the top plate (432).

4. The automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts according to claim 3 is characterized in that: A sliding rod (435) is fixedly mounted on the bottom end of the top plate (432), and one end of the sliding rod (435) facing away from the top plate (432) is inserted into a through groove provided in the support plate (41).

5. The automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts according to claim 1 is characterized in that: An oblique support plate (44) is fixedly welded to the inner side of the support plate (41), and a support wheel (45) is mounted on one end of the oblique support plate (44) facing away from the support plate (41) and is in contact with the cross bottom plate (1).

6. The automatic clamping fixture for CNC lathes suitable for clamping thin-walled parts according to claim 1, characterized in that: A worm wheel (62) is fixedly mounted on the other end of the drive shaft (6), a worm (63) is rotatably mounted on the mounting seat (5), the worm (63) is meshed with the worm wheel (62), and a servo motor (64) for driving the worm (63) to rotate is mounted on the mounting seat (5).

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