A lathe auxiliary clamping device

Abstract

The present application belongs to lathe clamping technical field, especially to a kind of lathe auxiliary clamping equipment, it includes installation slide rail, auxiliary clamping unit, wherein installation slide rail swing installation is in the upside of lathe main cabinet;Two auxiliary clamping units are installed on installation slide rail;The present application is positioned after through limiting plate, positioning plate to the up-down direction of part and lathe main shaft axis, whether part and lathe main shaft axis can be judged whether collinear by whether first slide plate exerts pressure on pressure sensor, i.e. whether part is centered;Compared with the centering of traditional thicker and heavier parts, reciprocating clamping step is saved, and operation is relatively simple.Auxiliary clamping tool in the present application can be driven by installation slide rail to swing relative to lathe, and first slide rod, second slide rod and third slide rod are hinged connection, such design can flexibly adapt to the clamping requirements of parts in different positions when clamping parts.

Description

Technical Field

[0001] This invention belongs to the field of lathe clamping technology, and particularly relates to an auxiliary clamping device for lathes. Background Technology

[0002] A lathe is a machine tool used for manufacturing machines, also known as a machine tool or machine workpiece, and is commonly referred to simply as a lathe. It is generally classified into metal cutting lathes, forging lathes, and woodworking lathes. Modern mechanical manufacturing employs many methods for machining mechanical parts; besides cutting, there are casting, forging, welding, stamping, and extrusion. However, parts requiring high precision and fine surface roughness generally require final machining on a lathe using cutting methods. Lathes play a significant role in the modernization of the national economy.

[0003] A lathe is a machine tool primarily used to machine rotating workpieces using a cutting tool. Drills, reamers, taps, dies, and knurling tools can also be used on a lathe for various machining operations. Lathes are mainly used for machining shafts, discs, sleeves, and other workpieces with rotating surfaces, and are the most widely used type of lathe in machinery manufacturing and repair shops.

[0004] When machining shaft-type parts on a lathe, one end of the part needs to be clamped in a jaw. During clamping, the part is centered using measuring tools to ensure that it does not run out of space during turning, affecting the turning accuracy. For thinner and lighter parts, centering can be easily achieved by manually rotating and moving the part. However, for thicker and heavier parts, auxiliary tools such as a small crane are needed to move the part for faster and easier clamping. Even with a crane, manual intervention is still required to rotate and move the part. Centering is a crucial step, directly affecting the final turning accuracy. Therefore, after each clamping and centering, it is necessary to check for alignment using a micrometer. If runout is found during the check, re-clamping is required, which is quite troublesome.

[0005] This invention designs a lathe auxiliary clamping device to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, the present invention employs the following technical solutions:

[0007] A lathe auxiliary clamping device includes a mounting slide rail and auxiliary clamping units, wherein the mounting slide rail is oscillatingly mounted on the upper side of the lathe main body housing; and two auxiliary clamping units are mounted on the mounting slide rail.

[0008] The auxiliary clamping unit includes a mounting slider, a sliding rod, a first motor, a second motor, a pressure sensor, a sliding plate, a third motor, a pressure plate, a third gear, a fourth gear, and an arc-shaped clamping plate. The mounting slider is slidably mounted within a mounting rail, and a first motor capable of controlling the sliding slider's movement is mounted on the mounting rail. A mounting groove is formed on the first sliding rod, and a pressure sensor is fixedly mounted within the mounting groove. The first sliding rod is slidably mounted on the mounting slider, and a second motor capable of driving the first sliding rod to slide up and down is mounted on the mounting slider. The third and fourth gears are coaxially and rotatably mounted within the sliding rod, with the radius of the fourth gear being twice the radius of the third gear. The sliding plates are toothed plates, and two sliding plates are slidably mounted within the sliding rod and mesh with the third and fourth gears respectively. The upper end of the sliding plate meshing with the third gear is located within the mounting groove and engages with the pressure sensor. The lower end of the other sliding plate is located below the sliding rod and is fixedly mounted with an arc-shaped pressure plate. Two arc-shaped clamping plates are symmetrically slidably mounted on the lower end of the sliding rod, and a third motor capable of driving the two arc-shaped clamping plates to slide at the same speed is mounted on the lower end of the sliding rod.

[0009] As a preferred embodiment, a rotating shaft is fixedly installed on the upper side of the lathe main housing, and a rotating sleeve is rotatably installed on the upper end of the rotating shaft; a mounting slide rail is fixedly installed on the rotating sleeve.

[0010] As a preferred embodiment, a positioning plate is fixedly installed on the rotating sleeve, and the positioning plate has a circular hole; the limiting plate is an arc-shaped plate, and the limiting plate has multiple evenly distributed circular through holes. The limiting plate is fixedly installed on the upper side of the lathe main body box by two symmetrically distributed support plates; when viewed from above the lathe, when the positioning plate swings to be completely aligned with the axis of the lathe spindle, the circular hole on the positioning plate is aligned with the circular through hole in the middle of the limiting plate; a positioning rod is inserted between the positioning plate and the limiting plate.

[0011] The mounting slide rails and positioning plates are distributed 180 degrees circumferentially.

[0012] As a preferred embodiment, the mounting slide rail has symmetrically distributed guide grooves on both sides, and a transmission block is fixedly installed on one side of the mounting slider, with the transmission block passing through the guide groove on one side of the mounting slide rail; the first motor is fixedly installed on the mounting slide rail, and a first screw is fixedly installed on the output shaft of the first motor, with the first screw and the transmission block connected by a threaded connection.

[0013] As a preferred embodiment, the slide bar is composed of a first slide bar, a second slide bar, and a third slide bar. The second slide bar is hinged to the lower side of the first slide bar via a support lug, and the third slide bar is hinged to the lower side of the second slide bar via a support lug. The first slide bar is slidably mounted on the mounting slider. The arc-shaped clamping plate and the third motor are mounted at the lower end of the third slide bar.

[0014] The third and fourth gears are coaxially rotatably mounted on the lug at the upper end of the second slide rod. The first slide plate is a toothed plate, which is slidably mounted inside the first slide rod. The upper end of the first slide plate protrudes from the first slide rod and aligns with the pressure sensor. The lower end of the first slide plate protrudes from the lower end face of the first slide rod and meshes with the third gear. The second slide plate is a toothed plate, which is slidably mounted inside the second slide rod. A second spring is installed between the second slide plate and the second slide rod. The upper end of the second slide plate protrudes from the upper end of the second slide rod and meshes with the fourth gear. The fifth gear is rotatably mounted on the lug at the upper end of the third slide rod. The lower end of the second slide plate protrudes from the lower end of the second slide rod and meshes with the fifth gear. The third slide plate is slidably mounted on the third slide rod. The upper end of the third slide plate protrudes from the upper end of the third slide rod and meshes with the fifth gear. A pressure plate is fixedly mounted on the lower end of the third slide plate.

[0015] As a preferred embodiment, a fixing plate is fixedly installed on one side of the lower end of the first slide rod, a fixing sleeve is fixedly installed on the upper side of the mounting slide block, a rotating column is rotatably installed on the upper side of the fixing sleeve, a second motor is fixedly installed on the upper side of the mounting slide block, and the output shaft of the second motor is connected to the rotating column through a first gear transmission; a second screw is slidably installed on the mounting slide block, the lower end of the second screw is fixedly connected to the fixing plate, and the second screw and the rotating column are connected through a threaded connection.

[0016] As a preferred embodiment, the lower end of the first slide rod has a slot; the second slide rod has an installation groove, and one side of the installation groove has a limit groove; the second limit rod is slidably installed in the installation groove, and a limit slide plate is fixedly installed on one side of the second limit rod; a first spring is installed between the limit slide plate and the installation groove, the first spring is a compression spring with preload; the limit slide plate mates with the lower end face of the limit groove; the first limit rod is slidably installed in the third slide rod, and the upper end of the first limit rod protrudes from the third slide rod and mates with the installation groove on the second slide rod.

[0017] As a preferred embodiment, a transmission rod is fixedly installed at the lower end of the first limiting rod, and the transmission rod extends through the side of the third slide rod; the third screw is rotatably installed on one side of the third slide rod, and the third screw and the transmission rod are connected by a threaded connection; the rocker arm is rotatably installed on one side of the third slide rod, and the rocker arm and the third screw are connected by a sixth gear.

[0018] As a preferred embodiment, two second gears are symmetrically rotated and mounted on both sides of the lower end of the third slide rod, and the third motor is fixedly mounted on the third slide rod. The output shaft of the third motor is connected to the rotating shaft of the two second gears through a synchronous pulley and a synchronous belt. Two arc-shaped clamping plates are symmetrically slidably mounted on both sides of the lower end of the third slide rod. The arc-shaped clamping plates are toothed plates, and the two arc-shaped clamping plates correspond one-to-one with the two second gears and mesh with each other.

[0019] Compared with existing technologies, the advantages of this invention are:

[0020] 1. After the part is positioned vertically and vertically with the lathe spindle axis by the limiting plate and the positioning plate, the present invention can determine whether the part and the lathe spindle axis are collinear by whether the first sliding plate applies pressure to the pressure sensor, that is, whether the part is centered. Compared with the traditional centering of thicker and heavier parts, the reciprocating clamping step is eliminated, and the operation is simpler.

[0021] 2. In this invention, the auxiliary clamping tool can swing relative to the lathe under the drive of the mounting slide rail, and the first slide rod, the second slide rod and the third slide rod are hinged. This design can flexibly adapt to the clamping requirements of parts in different positions when clamping parts.

[0022] 3. In order to ensure that the hinge joints of the first slide rod, the second slide rod and the third slide rod can be locked after swinging to the vertical state, a first limiting rod and a second limiting rod are designed in this invention. The swing of the first slide rod, the second slide rod and the third slide rod can be locked by the first limiting rod and the second limiting rod. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall component appearance.

[0024] Figure 2 This is a schematic diagram of the overall component distribution.

[0025] Figure 3 This is a schematic diagram of the auxiliary mechanism.

[0026] Figure 4 This is a schematic diagram of the distribution of auxiliary clamping units.

[0027] Figure 5 This is a schematic diagram of the rotating sleeve installation.

[0028] Figure 6 This is a diagram showing the installation of the slide rail.

[0029] Figure 7 This is a schematic diagram of the auxiliary clamping unit structure.

[0030] Figure 8 This is a schematic diagram of the installation of the first sliding rod.

[0031] Figure 9 This is a schematic diagram of the installation of the first slide bar, the second slide bar, and the third slide bar.

[0032] Figure 10 This is a schematic diagram of the installation of the first, second, and third skateboards.

[0033] Figure 11 This is a schematic diagram of the first sliding rod structure.

[0034] Figure 12 This is a schematic diagram of the second sliding rod structure.

[0035] Figure 13 This is a schematic diagram of the installation of the arc-shaped clamping component.

[0036] Figure 14 This is a schematic diagram of the installation of the curved plate.

[0037] Figure 15 This is a schematic diagram of the arc-shaped card plate drive.

[0038] Figure 16 This is a schematic diagram of the transmission between the first and second limit rods.

[0039] The following are the label names in the diagram: 1. Lathe body; 2. Auxiliary mechanism; 3. Mounting slide rail; 4. Auxiliary clamping unit; 5. Rotary shaft; 6. Limiting plate; 7. Rotating sleeve; 8. Positioning rod; 9. Support plate; 10. Positioning plate; 11. Guide slide groove; 12. Mounting slider; 13. First screw; 14. First slide rod; 15. Transmission block; 16. First motor; 17. Second slide rod; 18. Arc-shaped clamping component; 19. Second screw; 20. Second motor; 21. Fixing sleeve; 22. Fixing plate; 23. Mounting slide groove; 24. Pressure sensor; 25. Rotating column; 26. Slot; 27. First gear; 28. Third slide bar; 29. ​​Arc-shaped clamping plate; 30. First sliding plate; 31. Support lug; 32. Second sliding plate; 33. Third sliding plate; 34. First limiting rod; 35. First spring; 36. Second limiting rod; 37. Limiting sliding plate; 38. Limiting groove; 39. Mounting groove; 40. Synchronous pulley; 41. Synchronous belt; 42. Third motor; 43. Pressure plate; 44. Second gear; 45. Third gear; 46. Fourth gear; 47. Fifth gear; 48. Transmission rod; 49. Third screw; 50. Sixth gear; 51. Rocker arm; 52. Second spring. Detailed Implementation

[0040] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following embodiments and drawings are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0041] A lathe auxiliary clamping device, such as Figure 1 , 2 As shown in Figures 3 and 4, it includes a mounting slide rail 3, an auxiliary clamping unit 4, a rotating shaft 5, a limiting plate 6, a rotating sleeve 7, a positioning rod 8, a support plate 9, and a positioning plate 10, wherein... Figure 5 As shown, the limiting plate 6 is an arc-shaped plate with multiple evenly distributed circular through holes, such as... Figure 1 , 2 As shown, the limiting plate 6 is fixedly installed on the upper side of the lathe main housing via two symmetrically distributed support plates 9; the rotating shaft 5 is fixedly installed on the upper side of the lathe main housing, as shown. Figure 5As shown, a rotating sleeve 7 is rotatably mounted on the upper end of the rotating shaft 5, and a positioning plate 10 is fixedly mounted on the rotating sleeve 7; the positioning plate 10 has a circular hole, and when viewed from above, the positioning plate 10 swings to be completely aligned with the axis of the lathe spindle, the circular hole on the positioning plate 10 aligns with the circular through hole in the middle of the limiting plate 6; a positioning rod 8 is inserted between the positioning plate 10 and the limiting plate 6; as shown... Figure 6 As shown, symmetrically distributed guide grooves 11 are provided on both sides of the mounting slide rail 3. The mounting slide rail 3 is fixedly mounted on the rotating sleeve 7, and the mounting slide rail 3 and the positioning plate 10 are distributed at 180 degrees circumferentially. Figure 3 , 4 As shown, there are two auxiliary clamping units 4 on the mounting slide rail 3.

[0042] Looking down at the lathe, when the positioning plate 10 swings to be completely aligned with the lathe spindle axis, the circular hole on the positioning plate 10 aligns with the circular through hole in the middle of the limiting plate 6. At this time, the positioning rod 8 is inserted into the circular hole of the positioning plate 10 aligned with the limiting plate 6 to limit the orientation of the rotating sleeve 7. In this state, because the mounting slide rail 3 and the positioning plate 10 are distributed 180 degrees around the rotating sleeve 7, the mounting slide rail 3 and the lathe spindle axis are completely aligned in the vertical direction. That is, the spindle axis of the part clamped by the two auxiliary clamping units 4 installed on the mounting slide rail 3 is completely aligned with the lathe spindle axis in the vertical direction. In other words, the positioning plate 10, the limiting plate 6 and the positioning rod 8 designed by this invention can align the part clamped on the two auxiliary clamping units 4 with the lathe spindle axis in the vertical direction.

[0043] In this invention, the support plate 9, the rotating shaft 5 and the lathe main body can be fixed by bolts or directly welded by a welding machine.

[0044] like Figure 7 , 8 As shown in Figures 9 and 1, the auxiliary clamping unit 4 includes a mounting slider 12, a first screw 13, a first sliding rod 14, a transmission block 15, a first motor 16, a second sliding rod 17, a second screw 19, a second motor 20, a fixing sleeve 21, a fixing plate 22, a pressure sensor 24, a rotating column 25, a first gear 27, a third sliding rod 28, an arc-shaped clamping plate 29, a first sliding plate 30, a support lug 31, a second sliding plate 32, a third sliding plate 33, a first limiting rod 34, a first spring 35, a second limiting rod 36, a limiting sliding plate 37, a synchronous pulley 40, a synchronous belt 41, a third motor 42, a pressure plate 43, a second gear 44, a third gear 45, a fourth gear 46, a fifth gear 47, a transmission rod 48, a third screw 49, a sixth gear 50, and a rocker arm 51, wherein... Figure 6 As shown, the mounting slider 12 is slidably mounted inside the mounting slide rail 3. A transmission block 15 is fixedly mounted on one side of the mounting slider 12, and the transmission block 15 protrudes through the guide groove 11 on one side of the mounting slide rail 3; Figure 2 , 7 As shown, the first motor 16 is fixedly mounted on the mounting slide rail 3, as... Figure 7 As shown, a first screw 13 is fixedly mounted on the output shaft of the first motor 16, and the first screw 13 is connected to the transmission block 15 through a threaded connection; as shown Figure 8 As shown, the first slide bar 14 is slidably mounted on the mounting slider 12, as... Figure 11 As shown, the first slide bar 14 has a mounting groove 23, such as... Figure 8 As shown, a pressure sensor 24 is fixedly installed inside the mounting groove 23; as Figure 11 As shown, a slot 26 is formed at the lower end of the first slide rod 14; a fixing plate 22 is fixedly installed on one side of the lower end of the first slide rod 14, as shown. Figure 8 As shown, the fixing sleeve 21 is fixedly installed on the upper side of the mounting slider 12, and the rotating column 25 is rotatably installed on the upper side of the fixing sleeve 21. The second motor 20 is fixedly installed on the upper side of the mounting slider 12, and the output shaft of the second motor 20 is connected to the rotating column 25 through the transmission of the first gear 27. The second screw 19 is slidably installed on the mounting slider 12, and the lower end of the second screw 19 is fixedly connected to the fixing plate 22. The second screw 19 and the rotating column 25 are connected through a threaded connection. Figure 9 , 10 As shown, a lug 31 is fixedly installed at the lower end of the first slide rod 14, and two lugs 31 are symmetrically fixedly installed at both the upper and lower ends of the second slide rod 17. The second slide rod 17 is hinged to the lower side of the first slide rod 14 through the cooperation of the lug 31 at its upper end and the lug 31 at the lower end of the first slide rod 14; Figure 12 As shown, the second slide bar 17 has a mounting groove 39, and a limit groove 38 is formed on one side of the mounting groove 39; as Figure 10 As shown, the second limiting rod 36 is slidably installed in the mounting groove 39, as... Figure 16 As shown, a limiting slide plate 37 is fixedly installed on one side of the second limiting rod 36. A first spring 35 is installed between the limiting slide plate 37 and the mounting groove 39. The first spring 35 is a compressed spring 35 with preload. Figure 10 As shown, the lower end face of the limiting slide plate 37 mates with the limiting groove 38; as Figure 10 , 16As shown, the third gear 45 and the fourth gear 46 are coaxially rotatably mounted on the lug 31 at the upper end of the second slide rod 17. The radius of the fourth gear 46 is twice the radius of the third gear 45. The first slide plate 30 is a toothed plate, which is slidably mounted inside the first slide rod 14. The upper end of the first slide plate 30 protrudes from the first slide rod 14 and aligns with the pressure sensor 24. The lower end of the first slide plate 30 protrudes from the lower end face of the first slide rod 14 and meshes with the third gear 45. The second slide plate 32 is a toothed plate, which is slidably mounted inside the second slide rod 17. A second spring 52 is installed between the second slide plate 32 and the second slide rod 17. The upper end of the second slide plate 32 protrudes from the upper end of the second slide rod 17 and meshes with the fourth gear 46. Figure 13 , 14 As shown, the upper end of the third slide rod 28 has two symmetrically distributed lugs 31, and the lower end of the third slide rod 28 is V-shaped; as Figure 9 As shown, the third slide rod 28 is hinged to the lower side of the second slide rod 17 via its upper end lug 31 and the lower end lug 31 of the second slide rod 17; the first limiting rod 34 is slidably installed inside the third slide rod 28, and the upper end of the first limiting rod 34 protrudes from the third slide rod 28 and engages with the mounting groove 39 opened on the second slide rod 17; as shown Figure 16 As shown, a transmission rod 48 is fixedly installed at the lower end of the first limiting rod 34, as... Figure 13 As shown, the transmission rod 48 extends through the side of the third slide rod 28; the third screw 49 is rotatably mounted on one side of the third slide rod 28, and the third screw 49 and the transmission rod 48 are connected by a threaded connection; as shown Figure 16 As shown, the rocker arm 51 is rotatably mounted on one side of the third slide rod 28, and the rocker arm 51 and the third screw 49 are connected by a sixth gear 50; the fifth gear 47 is rotatably mounted on the lug 31 at the upper end of the third slide rod 28, and the lower end of the second slide plate 32 passes through the lower end of the second slide rod 17 and meshes with the fifth gear 47; the third slide plate 33 is slidably mounted on the third slide rod 28, and the upper end of the third slide plate 33 passes through the upper end of the third slide rod 28 and meshes with the fifth gear 47; the lower end of the third slide plate 33 passes through the lower end of the third slide rod 28 and a pressure plate 43 is fixedly mounted thereon, and the pressure plate 43 is an arc-shaped plate.

[0045] The first motor 16 drives the first screw 13 to rotate. The rotation of the first screw 13 causes the transmission block 15 to slide along the mounting slide rail 3. The sliding of the transmission block 15 causes the mounting slider 12 to slide. This invention controls the relative positions of the two auxiliary clamping units 4 mounted on the mounting slide rail 3 by adjusting the position of the mounting slider 12 on the mounting slide rail 3. During adjustment, the positions of the two auxiliary clamping units 4 can be determined according to the length of the part. When the part is relatively long, the distance between the auxiliary clamping unit 4 closer to the main unit and the main unit is correspondingly increased. Similarly, when the part is relatively short, the distance between the auxiliary clamping unit 4 closer to the main unit and the main unit is correspondingly decreased. This ensures that the part can be stably fixed during the clamping process under the combined action of the claw plate and the two auxiliary clamping units 4, and will not tilt due to uneven distribution of the clamping points of the part.

[0046] like Figure 13 , 14 As shown in Figure 15, two second gears 44 are symmetrically and rotatably mounted on both sides of the lower end of the third slide rod 28. The third motor 42 is fixedly mounted on the third slide rod 28. The output shaft of the third motor 42 is connected to the rotating shaft of the two second gears 44 through a synchronous pulley 40 and a synchronous belt 41. Two arc-shaped clamping plates 29 are symmetrically and slidably mounted on both sides of the lower end of the third slide rod 28. The arc-shaped clamping plates 29 are toothed plates. The two arc-shaped clamping plates 29 correspond one-to-one with the two second gears 44 and mesh with each other.

[0047] When the second motor 20 is working, it drives the rotating column 25 to rotate through the first gear 27. Since the rotating column 25 is threadedly engaged with the second screw 19 and the lower end of the second screw 19 is fixedly installed on the fixed plate 22, when the rotating column 25 rotates, the second screw 19 will move relative to the mounting slider 12 under the action of the thread. The movement of the second screw 19 drives the first slide bar 14 to move.

[0048] This invention assumes the part radius is R. When the part is clamped on the jaw and perfectly aligned, i.e., when the part axis is collinear with the lathe spindle axis, the relative positions of the components in the auxiliary clamping unit 4 are such that when the part is removed, the first slide plate 30, the second slide plate 32, and the third slide plate 33 move downwards under the action of the second spring 52, the third gear 45, the fourth gear 46, and the fifth gear 47. When the highest point of the inner arc surface of the pressure plate 43 moves down to the lowest point of the original part, the distance between the first slide plate 30 and the pressure sensor 24 is R. Thus, when clamping the part, if the distance between the part axis and the spindle axis is L1, then when clamping the part, only the first slide rod 14, the second slide rod 17, and the third slide rod 28 are in position. The distance (L1+R) that the mounting slider 12 must move relative to allow the arc-shaped clamping plate 29 to slide out and fully insert into the lower side of the part is required. This is equivalent to the distance (L1+R) that the upper end of the first sliding plate 30 must move relative to the pressure sensor 24. During insertion, the pressure plate 43 is pressed upwards by the part by a distance of 2R. Under the action of the fourth gear 46 and the third gear 45, the first sliding plate 30 moves upwards by R. At this point, the distance between the upper end of the first sliding plate 30 and the pressure sensor 24 is L1, which is the same as the distance between the part's axis and the spindle axis. Therefore, after the control rope pulls the Y-shaped plate upwards relative to the mounting vertical rod, when the upper end of the first sliding plate 30 contacts and engages with the pressure sensor 24, the part's axis is exactly collinear with the lathe spindle axis. If there is a gap at the junction of the lowermost part of the part on the arc-shaped clamping plate 29 and the arc-shaped clamping plate 29, it can be finely adjusted by controlling the sliding of the mounting slider 12 via the first motor 16.

[0049] After the part is positioned vertically and vertically by the limiting plate 6 and the positioning plate 10, the present invention can determine whether the part and the lathe spindle axis are collinear by whether the first sliding plate 30 applies pressure to the pressure sensor 24, that is, whether the part is centered. Compared with the traditional centering of thicker and heavier parts, the reciprocating clamping step is eliminated, and the operation is simpler.

[0050] In this invention, the auxiliary clamping tool can swing relative to the lathe under the drive of the mounting slide rail 3, and the first slide rod 14, the second slide rod 17 and the third slide rod 28 are hinged. This design can flexibly adapt to the clamping requirements of parts in different positions when clamping parts. During the clamping process, the second slide rod 17 sometimes needs to swing relative to the first slide rod 14, and the third slide rod 28 needs to swing relative to the second slide rod 17. During the swing, because the third gear 45 and the fourth gear 46 are rotated and mounted on the lug 31 of the second slide rod 17, the first slide plate 30 will slide relative to the first slide rod 14 and the second slide plate 32 will slide relative to the second slide rod 17. Similarly, the third slide plate 33 will also slide when the third slide rod 28 swings relative to the second slide rod 17. However, when the first slide rod 14, the second slide rod 17 and the third slide rod 28 return to the vertical state, the sliding caused by the swing of the first slide plate 30, the second slide plate 32 and the third slide plate 33 will be canceled out. It will not affect the normal sliding of the first slide plate 30, the second slide plate 32 and the third slide plate 33 when they are squeezed by the parts.

[0051] In this invention, to ensure that the hinge joints of the first slide rod 14, the second slide rod 17, and the third slide rod 28 can lock after swinging to a vertical state, a first limiting rod 34 and a second limiting rod 36 are designed. When the first slide rod 14, the second slide rod 17, and the third slide rod 28 need to swing, the rocker arm 51 is controlled to rotate, causing the third screw 49 to rotate. The rotation of the third screw 49, under the action of the thread, drives the transmission rod 48 to slide down. The transmission rod 48 drives the first limiting rod 34 to slide down and slide out of the mounting groove 39 on the second slide rod 17, releasing the swing limitation between the third slide rod 28 and the second slide rod 17. At the same time, when the first... When the limiting rod 34 slides down, the second limiting rod 36 will also slide down and slide out of the slot 26 of the first slide rod 14 under the action of the first spring 35, releasing the limitation between the first slide rod 14 and the second slide rod 17; when locking is required, the control rocker arm 51 is rotated, so that the first limiting rod 34 moves up and inserts into the mounting slot 39 of the second slide rod 17. During the upward movement of the first limiting rod 34, it will squeeze the second limiting rod 36, so that the second limiting rod 36 inserts into the slot 26 of the first slide rod 14. The swing of the first slide rod 14, the second slide rod 17 and the third slide plate 33 are locked by the first limiting rod 34 and the second limiting rod 36.

[0052] When the third motor 42 is working, it can drive the two second gears 44 to rotate through the synchronous pulley 40 and the synchronous belt 41. The rotation of the second gears 44 causes the two arc-shaped clamps 29 to slide.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

[0054] In this invention, the lengths of the first slide rod 14 and the second screw rod 19 are sufficient to allow the two arc-shaped clamping plates 29 to descend to the ground and clamp the workpiece on the ground; the lengths of the first slide rod 14 and the second screw rod 19 are as shown in the attached figure. Figure 2 As shown in the other figures, the lengths of the first slide bar 14 and the second screw bar 19 are only schematic.

[0055] Implementation: When using the clamping auxiliary tool designed in this invention, manually move the mounting slide rail 3 to the position of the part. Control the first limiting rod 34 and the second limiting rod 36 to move down and release the limiting of the hinge points of the first slide rod 14, the second slide rod 17 and the third slide rod 28. Adjust the position of the two auxiliary clamping units 4 by the first motor 16, and then control the second motor 20 in the auxiliary clamping unit 4 to work. When the second motor 20 works, it will drive the rotating column 25 to rotate through the first gear 27. Since the rotating column 25 is threadedly engaged with the second screw 19, and the lower end of the second screw 19 is fixedly installed on the fixing plate 22, when the rotating column 25 rotates, the second screw 19 will move relative to the mounting slider 12 under the action of the thread. The movement of the second screw 19 drives the first slide rod 14 to move. Move the arc-shaped clamping plate 29 to the part and control the third motor 42 to work. When the third motor 42 works, it can drive the two slide rods 14 through the synchronous pulley 40 and the synchronous belt 41. The second gear 44 rotates, causing two arc-shaped clamping plates 29 to slide and insert into the lower side of the part, clamping it. After the part is clamped on the auxiliary clamping unit 4, the mounting slide rail 3 is moved, causing it to rotate relative to the rotating shaft 5. When the circular hole on the positioning plate 10 aligns with the circular through hole in the middle of the limiting plate 6, the positioning plate 10 is fixed to the limiting plate 6 by the positioning rod 8. At this time, the axis of the part is completely coincident with the axis of the lathe spindle in the vertical direction. The rocker arm 51 controls the first limiting rod 34 and the second limiting rod 36 to move upward, locking the hinge of the first slide rod 14, the second slide rod 17 and the third slide rod 28. Then, the second motor 20 is controlled to work, controlling the first slide rod 14, the second slide rod 17 and the third slide rod 28 to move upward. The part is moved upward. During the upward movement, when the upper end of the first slide plate 30 contacts and engages with the pressure sensor 24, the axis of the part is also collinear with the axis of the lathe spindle. At this time, the part is aligned and can be clamped and fixed.

Claims

1. A lathe auxiliary clamping device, characterized in that: It includes a mounting slide rail and auxiliary clamping units, wherein the mounting slide rail is oscillatingly mounted on the upper side of the lathe main body housing; two auxiliary clamping units are mounted on the mounting slide rail; The auxiliary clamping unit includes a mounting slider, a sliding rod, a first motor, a second motor, a pressure sensor, a sliding plate, a third motor, a pressure plate, a third gear, a fourth gear, and an arc-shaped clamping plate. The mounting slider is slidably mounted within a mounting rail, and a first motor capable of controlling the sliding slider's movement is mounted on the mounting rail. A mounting groove is formed on the first sliding rod, and a pressure sensor is fixedly mounted within the mounting groove. The first sliding rod is slidably mounted on the mounting slider, and a second motor capable of driving the first sliding rod to slide up and down is mounted on the mounting slider. The third and fourth gears are coaxially rotatably mounted within the sliding rod, with the radius of the fourth gear being twice the radius of the third gear. The sliding plates are toothed plates, and two sliding plates are slidably mounted within the sliding rod and mesh with the third and fourth gears respectively. The upper end of the sliding plate meshing with the third gear is located within the mounting groove and engages with the pressure sensor. The lower end of the other sliding plate is located below the sliding rod and is fixedly mounted with an arc-shaped pressure plate. Two arc-shaped clamping plates are symmetrically slidably mounted on the lower end of the sliding rod, and a third motor capable of driving the two arc-shaped clamping plates to slide at the same speed is mounted on the lower end of the sliding rod. The slide bar is composed of a first slide bar, a second slide bar, and a third slide bar. The second slide bar is hinged to the lower side of the first slide bar via a support lug, and the third slide bar is hinged to the lower side of the second slide bar via a support lug. The first slide bar is slidably mounted on the mounting slider. The arc-shaped clamping plate and the third motor are mounted at the lower end of the third slide bar. The third and fourth gears are coaxially rotatably mounted on the lug at the upper end of the second slide rod. The first slide plate is a toothed plate, which is slidably mounted inside the first slide rod. The upper end of the first slide plate protrudes from the first slide rod and aligns with the pressure sensor. The lower end of the first slide plate protrudes from the lower end face of the first slide rod and meshes with the third gear. The second slide plate is a toothed plate, which is slidably mounted inside the second slide rod. A second spring is installed between the second slide plate and the second slide rod. The upper end of the second slide plate protrudes from the upper end of the second slide rod and meshes with the fourth gear. The fifth gear is rotatably mounted on the lug at the upper end of the third slide rod. The lower end of the second slide plate protrudes from the lower end of the second slide rod and meshes with the fifth gear. The third slide plate is slidably mounted on the third slide rod. The upper end of the third slide plate protrudes from the upper end of the third slide rod and meshes with the fifth gear. A pressure plate is fixedly mounted on the lower end of the third slide plate.

2. The lathe auxiliary clamping device according to claim 1, characterized in that: A rotating shaft is fixedly installed on the upper side of the lathe main housing, and a rotating sleeve is rotatably installed on the upper end of the rotating shaft; a mounting slide rail is fixedly installed on the rotating sleeve.

3. The lathe auxiliary clamping device according to claim 2, characterized in that: A positioning plate with a circular hole is fixedly installed on the rotating sleeve; the limiting plate is an arc-shaped plate with multiple evenly distributed circular through holes. The limiting plate is fixedly installed on the upper side of the lathe main body box by two symmetrically distributed support plates; when viewed from above, when the positioning plate swings to be completely aligned with the axis of the lathe spindle, the circular hole on the positioning plate is aligned with the circular through hole in the middle of the limiting plate; a positioning rod is inserted between the positioning plate and the limiting plate. The mounting slide rails and positioning plates are distributed 180 degrees circumferentially.

4. The lathe auxiliary clamping device according to claim 1, characterized in that: The mounting slide rail has symmetrically distributed guide grooves on both sides. A transmission block is fixedly installed on one side of the mounting slider, and the transmission block passes through the guide groove on one side of the mounting slide rail. The first motor is fixedly installed on the mounting slide rail, and a first screw is fixedly installed on the output shaft of the first motor. The first screw and the transmission block are connected by a threaded connection.

5. The lathe auxiliary clamping device according to claim 1, characterized in that: A fixing plate is fixedly installed on one side of the lower end of the first slide rod, a fixing sleeve is fixedly installed on the upper side of the mounting slide, a rotating column is rotatably installed on the upper side of the fixing sleeve, a second motor is fixedly installed on the upper side of the mounting slide, and the output shaft of the second motor is connected to the rotating column through a first gear transmission; a second screw is slidably installed on the mounting slide, the lower end of the second screw is fixedly connected to the fixing plate, and the second screw is connected to the rotating column through a threaded connection.

6. The lathe auxiliary clamping device according to claim 1, characterized in that: The lower end of the first slide rod has a slot; the second slide rod has an installation groove, and one side of the installation groove has a limit groove; the second limit rod is slidably installed in the installation groove, and a limit slide plate is fixedly installed on one side of the second limit rod. A first spring is installed between the limit slide plate and the installation groove. The first spring is a compressed first spring with preload; the limit slide plate mates with the lower end face of the limit groove; the first limit rod is slidably installed in the third slide rod, and the upper end of the first limit rod protrudes from the third slide rod and mates with the installation groove on the second slide rod.

7. A lathe auxiliary clamping device according to claim 6, characterized in that: A transmission rod is fixedly installed at the lower end of the first limiting rod, and the transmission rod extends out of the side of the third slide rod; the third screw is rotatably installed on one side of the third slide rod, and the third screw and the transmission rod are connected by a threaded connection; the rocker arm is rotatably installed on one side of the third slide rod, and the rocker arm and the third screw are connected by a sixth gear.

8. The lathe auxiliary clamping device according to claim 1, characterized in that: Two second gears are symmetrically rotatably mounted on both sides of the lower end of the third slide rod. The third motor is fixedly mounted on the third slide rod. The output shaft of the third motor is connected to the rotating shaft of the two second gears through a synchronous pulley and a synchronous belt. Two arc-shaped clamping plates are symmetrically slidably mounted on both sides of the lower end of the third slide rod. The arc-shaped clamping plates are toothed plates. The two arc-shaped clamping plates correspond one-to-one with the two second gears and mesh with each other.

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