Shock absorption tool for machining lengthened thin-wall heavy-duty valve cover of horizontal numerical control lathe

Abstract

The invention belongs to the field of valve cover machining equipment, and particularly relates to a horizontal numerical control lathe lengthened thin-wall heavy-duty valve cover machining damping tool which comprises a workbench, two symmetrically-arranged bench drills are arranged on the workbench, a supporting frame is arranged on the workbench, a first rotating shaft is arranged on the supporting frame, a rotating disc is arranged on the first rotating shaft, and a second rotating shaft is arranged on the rotating disc. Supporting legs are arranged at the bottom of the working table, the two clamps are symmetrically distributed on the rotating disc, the rotating disc is driven by an overturning assembly, a moving assembly is arranged between the working table and the bench drill and comprises a rectangular groove formed in the working table, a sliding block is arranged in the rectangular groove, a base is fixed to the sliding block, and the rotating disc is arranged on the base. The bench drill is arranged on the base, and the moving assembly further comprises a driving component and a feeding speed adjusting component. By arranging the feeding speed adjusting assembly, impact and vibration caused by rapid feeding are avoided, the drilling precision is improved, and meanwhile abrasion of the drill bit is reduced.

Description

Technical Field

[0001] The invention belongs to the field of valve cover processing equipment, and in particular relates to a shock-absorbing tool for processing a lengthened thin-walled and heavy valve cover on a horizontal CNC lathe. Background Art

[0002] The valve cover is a valve part equipped with a valve stem seal. Its main function is to connect or support the actuator to ensure the normal operation of the valve. The valve cover is widely used in various industrial fields, including but not limited to petroleum, chemical industry, electric power, metallurgy, water treatment, etc. In these fields, the role of the valve cover is crucial, which is not only related to the sealing performance of the valve, but also directly affects the safety and stability of the entire system.

[0003] When opening the center hole of the valve cover, the common method is to use CNC three-jaw clamping with the support of the machine tool center frame to fix the valve cover, and then control the movement of the drill to open the hole in the valve cover.

[0004] The existing device also has the following deficiencies:

[0005] 1. For the extended thin-walled heavy valve cover, the length of the center hole is also correspondingly longer, so it is difficult to complete the hole drilling at one time. When drilling, usually a hole is drilled at one end of the valve cover first, and then the workpiece is turned over to drill a hole at the other end of the valve cover. However, positioning errors are prone to occur when the valve cover is turned over, thereby affecting the processing accuracy, and this hole drilling method has low working efficiency.

[0006] 2. When drilling a hole, the moment the drill bit contacts the valve cover, the valve cover will vibrate due to the impact of the drill bit. The vibration of the valve cover will have a direct impact on the processing accuracy. If the vibration amplitude is large, it may even damage the valve cover. In addition, the impact between the drill bit and the valve cover will also reduce the service life of the drill bit.

[0007] 3. After the drilling is completed in the existing drilling method, the valve cover with the drilling completed needs to be removed from the fixture and a new valve cover needs to be re-clamped before continuing the drilling work. The drill bit needs a waiting process for clamping, and continuous drilling cannot be performed, resulting in poor work continuity and low work efficiency. Summary of the invention

[0008] The purpose of the present invention is to provide a shock-absorbing tool for machining thin-walled and heavy-duty valve covers on a horizontal CNC lathe in order to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention adopts the following technical scheme: a horizontal CNC lathe lengthened thin-walled heavy valve cover processing shock absorbing tooling, comprising:

[0010] A workbench, wherein two bench drills are symmetrically arranged on the workbench, a support frame is provided on the workbench, a first rotating shaft is provided on the support frame, a rotating disk is provided on the first rotating shaft, and legs are provided at the bottom of the workbench;

[0011] The clamp has two clamps and is symmetrically distributed on a rotating disk, and the rotating disk is driven by a turning assembly.

[0012] Furthermore, a moving component is provided between the workbench and the bench drill, and the moving component includes a rectangular groove opened on the workbench, a slider is provided in the rectangular groove, a base is fixed on the slider, the bench drill is arranged on the base, and the moving component also includes a driving component and a feed speed adjustment component.

[0013] Furthermore, the driving component includes a motor fixed on the supporting leg, the supporting leg is provided with two second rotating shafts, the two second rotating shafts are both provided with pulleys, and the two pulleys are cross-driven by belts.

[0014] Furthermore, the feed speed adjustment component includes an incomplete gear fixed on the second rotating shaft, the incomplete gear is provided with a cylindrical pin, the support leg is provided with a central axis, the central axis is rotatably connected to a rocker arm, the rocker arm is provided with a U-shaped groove, the cylindrical pin is slidably connected in the U-shaped groove, the slider is rotatably connected to a connecting rod, and the end of the connecting rod away from the slider is rotatably connected to the end of the rocker arm away from the central axis.

[0015] Furthermore, a cleaning assembly is provided on the workbench, and the cleaning assembly includes a third rotating shaft rotatably connected to the support leg, a first column gear meshing with the incomplete gear is fixed on the third rotating shaft, a movable plate is provided on the third rotating shaft, and a guide rod passing through the movable plate is provided on the workbench, an L-shaped rod is fixed on the guide rod, and a cleaning plate is fixed on the L-shaped rod.

[0016] Furthermore, the number of teeth of the incomplete gear is the same as that of the first column gear, a cam groove is provided on the third rotating shaft, and a limiting rod adapted to the cam groove is provided on the movable plate. When the incomplete gear rotates one circle, the movable plate moves back and forth once along the axial direction of the third rotating shaft under the action of the cam groove.

[0017] Furthermore, the flip assembly includes a connecting rod fixed on the L-shaped rod, a rack is rotatably connected to the connecting rod, a second column gear meshing with the rack is provided on the first rotating shaft, and the number of teeth on the rack is half the number of teeth on the second column gear.

[0018] Furthermore, the rack has a traction rod, and the support frame is provided with a diamond-shaped groove adapted to the traction rod. A baffle is provided at a corner of the diamond-shaped groove close to the first rotating shaft, and the baffle is rotatably connected to the side wall of the diamond-shaped groove.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The present invention uses two bench drills to simultaneously drill holes at both ends of the valve cover, which reduces the number of times the valve cover is flipped and repositioned, thereby reducing positioning errors and improving processing accuracy. In addition, by simultaneously drilling holes at both ends, the time used for drilling holes is greatly shortened, work efficiency is improved, and the time cost of drilling holes is reduced.

[0021] 2. The present invention sets a feed speed adjustment component, and drives the incomplete gear to rotate through the motor, thereby driving the swing arm to swing back and forth left and right under the action of the cylindrical pin. When the cylindrical pin is in the upper half of the incomplete gear, the bench drill is in a cutting state. At this time, the distance between the cylindrical pin and the center axis is far, and the swing speed of the swing arm is low as the incomplete gear rotates. The feed speed of the bench drill is low, so that the drill bit can enter the valve cover slowly and smoothly when contacting, avoiding the impact and vibration caused by rapid feeding, improving the drilling accuracy, and extending the service life of the drill bit. When the cylindrical pin is located in the lower half of the incomplete gear, the bench drill is in a cutting state. At this time, the feed speed of the bench drill is high, and the drill bit withdraws from the hole quickly, reducing the friction time of the drill bit in the hole, thereby reducing the wear of the drill bit and further extending the service life of the drill bit.

[0022] 3. The present invention sets a cleaning component. When the drill bit is separated from the valve cover when retracting, the incomplete gear starts to mesh with the first column gear. When the bench drill returns to the initial position, the incomplete gear drives the first column gear and the third rotating shaft to rotate one circle. Under the action of the cam groove, the movable plate drives the L-shaped rod and the cleaning plate to move back and forth once, pushing the debris on the workbench away from under the valve cover, avoiding the accumulation of debris under the valve cover, resulting in the debris generated during drilling not falling off in time and affecting the drilling quality, thereby improving the drilling accuracy.

[0023] 4. The present invention sets a flip assembly. When the L-shaped rod moves, it drives the connecting rod and the rack to move, thereby driving the second column gear and the rotating disk to rotate 180 degrees, exchanging the position of the processed valve cover and the unprocessed valve cover, eliminating the waiting time for clamping, realizing continuous hole opening, strong working continuity and high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a shock-absorbing tooling for processing a lengthened thin-walled, relatively heavy valve cover on a horizontal CNC lathe provided by the present invention;

[0025] Figure 2 It is a schematic diagram of the overall side view structure of a horizontal CNC lathe lengthened thin-walled and heavy-duty valve cover processing shock-absorbing tooling provided by the present invention;

[0026] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4It is a structural schematic diagram of a moving component and a feed speed regulating component of a shock-absorbing tooling for processing a lengthened thin-walled and heavy valve cover on a horizontal CNC lathe provided by the present invention;

[0028] Figure 5 It is a front view structural schematic diagram of a moving assembly and a feed speed adjustment assembly of a shock-absorbing tooling for processing a lengthened thin-walled and heavy valve cover on a horizontal CNC lathe provided by the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of a cleaning component of a shock-absorbing tooling for processing a lengthened thin-walled and heavy-duty valve cover on a horizontal CNC lathe provided by the present invention;

[0030] Figure 7 It is a schematic diagram of the movable plate structure of a shock-absorbing tooling for processing a thin-walled and heavy-duty valve cover on a horizontal CNC lathe provided by the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of a flip assembly of a shock-absorbing tooling for processing a thin-walled and heavy-duty valve cover on a horizontal CNC lathe provided by the present invention;

[0032] Fig. 9 yes Figure 8 Enlarged view of point B in the middle;

[0033] Fig.10 The present invention provides a schematic diagram of the structure of the connecting rod and rack movement states of a shock absorbing tooling for machining a lengthened thin-walled and relatively heavy valve cover on a horizontal CNC lathe.

[0034] In the figure, 1 is a workbench, 11 is a drill, 12 is a support frame, 13 is a first rotating shaft, 14 is a rotating disk, and 15 is a supporting leg;

[0035] 2 clamps;

[0036] 31 rectangular slot, 32 slider, 33 base;

[0037] 41 motor, 42 second rotating shaft, 421 incomplete gear, 422 cylindrical pin, 43 pulley, 44 center shaft, 45 swing rod, 451 U-shaped groove, 46 connecting rod;

[0038] 51 third rotating shaft, 52 first column gear, 53 movable plate, 54 guide rod, 55 L-shaped rod, 56 cleaning plate, 511 cam groove, 531 limit rod;

[0039] 61 connecting rod, 62 rack, 621 traction rod, 63 second column gear, 64 diamond groove, 641 baffle. DETAILED DESCRIPTION

[0040] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0041] like Figure 1-Figure 10As shown, a horizontal CNC lathe lengthened thin-walled heavy valve cover processing shock absorbing tooling includes:

[0042] A workbench 1, on which two bench drills 11 are symmetrically arranged, a support frame 12 is provided on the workbench 1, a first rotating shaft 13 is provided on the support frame 12, a rotating disk 14 is provided on the first rotating shaft 13, and a support leg 15 is provided at the bottom of the workbench 1;

[0043] The clamps 2 are two and symmetrically distributed on the rotating disk 14, and the rotating disk 14 is driven by the turning assembly.

[0044] A moving assembly is provided between the workbench 1 and the bench drill 11. The moving assembly includes a rectangular groove 31 provided on the workbench 1. A slider 32 is provided in the rectangular groove 31. A base 33 is fixed on the slider 32. The bench drill 11 is provided on the base 33. The moving assembly also includes a driving component and a feed speed adjustment component.

[0045] The driving component includes a motor 41 fixed on the leg 15. The leg 15 is provided with two second rotating shafts 42. The two second rotating shafts 42 are each provided with a pulley 43. The two pulleys are driven crosswise by belts.

[0046] The feed speed adjustment component includes an incomplete gear 421 fixed on the second rotating shaft 42, a cylindrical pin 422 is provided on the incomplete gear 421, and a plurality of evenly distributed weight-reducing holes are opened on the incomplete gear 421. A central axis 44 is provided on the support leg 15, a rocker arm 45 is rotatably connected to the central axis 44, a U-shaped groove 451 is opened on the rocker arm 45, and the cylindrical pin 422 is slidably connected in the U-shaped groove 451. A connecting rod 46 is rotatably connected to the slider 32, and an end of the connecting rod 46 away from the slider 32 is rotatably connected to an end of the rocker arm 45 away from the central axis 44.

[0047] During the specific operation, the valve cover to be processed is fixed on the rotating disk 14 by the clamp 2, and the motor 41 is turned on. The motor 41 rotates to drive the second rotating shaft 42 and the incomplete gear 421 to rotate, and the cylindrical pin 422 rotates synchronously around the central axis of the incomplete gear 421 and drives the swing rod 45 to swing back and forth, thereby driving the bench drill 11 to move back and forth horizontally under the action of the connecting rod 46. When the cylindrical pin 422 is in the upper half of the incomplete gear 421, the bench drill 11 is in the feeding state. At this time, the cylindrical pin 422 is far away from the central axis 44, and the swing rod 45 moves with the incomplete gear 421. The rotation and swinging speed of the complete gear 421 is low, and the feed speed of the bench drill 11 is low, so that the drill bit can enter the valve cover slowly and smoothly, avoiding the impact and vibration caused by rapid feed, improving the drilling accuracy, and extending the service life of the drill bit. When the cylindrical pin 422 is located in the lower half of the incomplete gear 421, the bench drill 11 is in a retracted state. At this time, the feed speed of the bench drill 11 is high, and the drill bit withdraws from the hole quickly, reducing the friction time of the drill bit in the hole, thereby reducing the wear of the drill bit and further extending the service life of the drill bit.

[0048] The workbench 1 is provided with a cleaning assembly, which includes a third rotating shaft 51 rotatably connected to the supporting leg 15, a first column gear 52 meshing with the incomplete gear 421 is fixed on the third rotating shaft 51, a movable plate 53 is provided on the third rotating shaft 51, a guide rod 54 penetrating the movable plate 53 is provided on the workbench 1, an L-shaped rod 55 is fixed on the guide rod 54, and a cleaning plate 56 is fixed on the L-shaped rod 55;

[0049] The number of teeth of the incomplete gear 421 is the same as that of the first column gear 52. A cam groove 511 is provided on the third rotating shaft 51. A limiting rod 531 adapted to the cam groove 511 is provided on the movable plate 53. When the incomplete gear 421 rotates one circle, the movable plate 53 reciprocates once along the axial direction of the third rotating shaft 51 under the action of the cam groove 511.

[0050] When retracting the tool, after the drill bit is separated from the valve cover, the incomplete gear 421 meshes with the first column gear 52. When the bench drill 11 returns to its initial position, the incomplete gear 421 separates from the first column gear 52 again. In the process from the separation of the drill bit from the valve cover to the return of the bench drill 11 to its initial position, the incomplete gear 421 drives the first column gear 52 to rotate one circle. Under the action of the cam groove 511 and the limit rod 531, the movable plate 53 reciprocates once along the central axis of the first column gear 52, thereby driving the L-shaped rod 55 and the cleaning plate 56 to reciprocate once. The cleaning plate 56 pushes the debris generated during the hole opening away from under the valve cover to avoid the accumulation of debris under the valve cover, which causes the debris generated during drilling to fail to fall off in time and affect the drilling quality, thereby improving the drilling accuracy.

[0051] The flip assembly includes a connecting rod 61 fixed on the L-shaped rod 55, a rack 62 is rotatably connected to the connecting rod 61, a second column gear 63 meshing with the rack 62 is provided on the first rotating shaft 13, the number of teeth of the rack 62 is half the number of teeth of the second column gear 63, a traction rod 621 is provided on the rack 62, a diamond groove 64 adapted to the traction rod 621 is provided on the support frame 12, a baffle 641 is provided at the corner of the diamond groove 64 close to the first rotating shaft 13, and the baffle 641 is rotatably connected to the side wall of the diamond groove 64;

[0052] When the L-shaped rod 55 moves, it drives the connecting rod 61 to move synchronously. When the connecting rod 61 moves toward the direction close to the first rotating shaft 13, the traction rod 621 is located in the horizontal groove at the top of the diamond groove 64. At this time, the rack 62 is in a horizontal state, and the rack 62 is engaged with the second column gear 63. When the rack 62 moves, it drives the second column gear 63 to rotate 180°, thereby driving the first rotating shaft 13 and the rotating disk 14 to rotate 180° to exchange the position of the processed valve cover and the unprocessed valve cover, eliminating the waiting time for clamping, realizing continuous hole opening, strong working continuity and high working efficiency. When the traction rod 621 moves to the horizontal groove at the bottom of the diamond groove 64, the rack 62 and the second column gear 53 are separated, and the connecting rod 61 will not drive the rotating disk 13 to flip during the return process.

[0053] The working principle of the present invention is as follows:

[0054] During operation, the valve cover to be processed is fixed on the rotating disk 14 by the clamp 2, and the motor 41 is turned on. The rotation of the motor 41 drives the second rotating shaft 42 and the incomplete gear 421 to rotate, and the cylindrical pin 422 rotates synchronously around the central axis of the incomplete gear 421 and drives the swing rod 45 to swing back and forth, thereby driving the bench drill 11 to move back and forth horizontally under the action of the connecting rod 46. When the cylindrical pin 422 is in the upper half of the incomplete gear 421, the bench drill 11 is in a feeding state. At this time, the cylindrical pin 422 is far away from the central axis 44, and the swing rod 45 swings at a low speed with the rotation of the incomplete gear 421. The feed speed of the bench drill 11 is low, so that the drill bit can enter slowly and smoothly when contacting the valve cover, avoiding the impact and vibration caused by rapid feeding, improving the drilling accuracy, and extending the service life of the drill bit.

[0055] When the cylindrical pin 422 is located at the lower half of the incomplete gear 421, the bench drill 11 is in a retracted state. At this time, the feed speed of the bench drill 11 is high, and the drill bit quickly withdraws from the hole, which reduces the friction time of the drill bit in the hole, thereby reducing the wear of the drill bit and further extending the service life of the drill bit. By drilling holes at both ends of the valve cover with two bench drills 11 at the same time, the number of times the valve cover is flipped and repositioned is reduced, thereby reducing positioning errors and improving processing accuracy. In addition, by drilling holes at both ends at the same time, the time used for drilling holes is greatly shortened, the work efficiency is improved, and the time cost of drilling holes is reduced.

[0056] When the drill is retracted, after the drill bit is separated from the valve cover, the incomplete gear 421 meshes with the first column gear 52. When the bench drill 11 returns to its initial position, the incomplete gear 421 separates from the first column gear 52 again. In the process from the separation of the drill bit from the valve cover to the return of the bench drill 11 to its initial position, the incomplete gear 421 drives the first column gear 52 to rotate one circle. Under the action of the cam groove 511 and the limit rod 531, the movable plate 53 reciprocates once along the central axis of the first column gear 52, thereby driving the L-shaped rod 55 and the cleaning plate 56 to reciprocate once. The cleaning plate 56 pushes the debris generated during the hole opening away from the bottom of the valve cover, so as to avoid the accumulation of debris under the valve cover, which causes the debris generated during the drilling to fail to fall off in time and affect the drilling quality, thereby improving the drilling accuracy.

[0057] When the L-shaped rod 55 moves, it drives the connecting rod 61 to move synchronously. When the connecting rod 61 moves toward the direction close to the first rotating shaft 13, the traction rod 621 is located in the horizontal groove at the top of the diamond groove 64. At this time, the rack 62 is in a horizontal state, and the rack 62 is engaged with the second column gear 63. When the rack 62 moves, it drives the second column gear 63 to rotate 180°, thereby driving the first rotating shaft 13 and the rotating disk 14 to rotate 180° to exchange the position of the processed valve cover and the unprocessed valve cover, eliminating the waiting time for clamping, realizing continuous hole opening, strong working continuity and high working efficiency. When the traction rod 621 moves to the horizontal groove at the bottom of the diamond groove 64, the rack 62 and the second column gear 53 are separated, and the connecting rod 61 will not drive the rotating disk 13 to flip during the return process.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal CNC lathe lengthened thin-walled heavy valve cover processing shock-absorbing tooling, characterized in that: include: A workbench (1), wherein two symmetrically arranged bench drills (11) are provided on the workbench (1), a support frame (12) is provided on the workbench (1), a first rotating shaft (13) is provided on the support frame (12), a rotating disk (14) is provided on the first rotating shaft (13), and a support leg (15) is provided at the bottom of the workbench (1); The clamps (2) are two and symmetrically distributed on a rotating disk (14), and the rotating disk (14) is driven by a turning assembly.

2. The shock-absorbing tooling for processing thin-walled and heavy-duty valve covers on a horizontal CNC lathe as claimed in claim 1 is characterized in that: A moving assembly is provided between the workbench (1) and the bench drill (11), the moving assembly comprising a rectangular groove (31) provided on the workbench (1), a slider (32) provided in the rectangular groove (31), a base (33) fixed on the slider (32), the bench drill (11) being arranged on the base (33), and the moving assembly further comprising a driving component and a feed speed adjusting component.

3. The shock-absorbing tooling for processing thin-walled and heavy-duty valve covers on a horizontal CNC lathe as described in claim 2 is characterized in that: The driving component comprises a motor (41) fixed on the supporting leg (15); the supporting leg (15) is provided with two second rotating shafts (42); the two second rotating shafts (42) are each provided with a pulley (43); the two pulleys are cross-driven by belts.

4. The shock-absorbing tooling for processing thin-walled and heavy-duty valve covers on a horizontal CNC lathe as claimed in claim 2 is characterized in that: The feed speed adjustment component comprises an incomplete gear (421) fixed on the second rotating shaft (42), a cylindrical pin (422) is provided on the incomplete gear (421), a central shaft (44) is provided on the support leg (15), a swing rod (45) is rotatably connected to the central shaft (44), a U-shaped groove (451) is provided on the swing rod (45), the cylindrical pin (422) is slidably connected in the U-shaped groove (451), a connecting rod (46) is rotatably connected to the slider (32), and an end of the connecting rod (46) away from the slider (32) is rotatably connected to an end of the swing rod (45) away from the central shaft (44).

5. The shock-absorbing tooling for processing thin-walled and heavy-duty valve covers on a horizontal CNC lathe as claimed in claim 1 is characterized in that: The workbench (1) is provided with a cleaning assembly, which comprises a third rotating shaft (51) rotatably connected to the supporting leg (15), a first column gear (52) meshing with the incomplete gear (421) being fixed on the third rotating shaft (51), a movable plate (53) being provided on the third rotating shaft (51), a guide rod (54) penetrating the movable plate (53) being provided on the workbench (1), an L-shaped rod (55) being fixed on the guide rod (54), and a cleaning plate (56) being fixed on the L-shaped rod (55).

6. The shock-absorbing tooling for processing thin-walled and heavy-duty valve covers on a horizontal CNC lathe as claimed in claim 5 is characterized in that: The number of teeth of the incomplete gear (421) is the same as the number of teeth of the first column gear (52); a cam groove (511) is provided on the third rotating shaft (51); a limiting rod (531) adapted to the cam groove (511) is provided on the movable plate (53); when the incomplete gear (421) rotates one circle, the movable plate (53) reciprocates once along the axial direction of the third rotating shaft (51) under the action of the cam groove (511).

7. The shock-absorbing tooling for processing thin-walled and heavy-duty valve covers on a horizontal CNC lathe as claimed in claim 5 is characterized in that: The flip assembly comprises a connecting rod (61) fixed on the L-shaped rod (55), a rack (62) being rotatably connected to the connecting rod (61), a second column gear (63) meshing with the rack (62) being provided on the first rotating shaft (13), and the number of teeth on the rack (62) being half the number of teeth on the second column gear (63).

8. The shock-absorbing tooling for processing thin-walled and heavy-duty valve covers on a horizontal CNC lathe as claimed in claim 7 is characterized in that: The rack (62) is provided with a traction rod (621), the support frame (12) is provided with a rhombus groove (64) adapted to the traction rod (621), a baffle (641) is provided at a corner of the rhombus groove (64) close to the first rotating shaft (13), and the baffle (641) is rotatably connected to the side wall of the rhombus groove (64).

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