Reaming machine for machining inner hole of oil cylinder

Abstract

The invention relates to the technical field of reaming, in particular to a reaming machine for machining an inner hole of an oil cylinder. A chuck is fixedly connected to a workbench, a part for cutting and flushing is arranged at one end of the chuck, and a sliding block is arranged at the other end of the chuck; the reciprocating threaded rod is connected with a driven gear, the driven gear is meshed with a driving gear, the driving gear is fixedly connected with a supporting shaft, the supporting shaft is rotationally connected with the workbench through a bearing, the workbench is rotationally connected with a connecting shaft and a driving shaft through a bearing, and the connecting shaft is fixedly connected with a first incomplete gear. The driving shaft is fixedly connected with a second incomplete gear, the first incomplete gear is meshed with the driving gear, the second incomplete gear is meshed with the driven gear, and the connecting shaft and the driving shaft are driven by a same-direction driving mechanism. According to the invention, the hole wall is prevented from being scratched, and the smoothness of the hole wall is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of reaming holes, and in particular to a reaming machine used for processing inner holes of oil cylinders. Background Art

[0002] Reaming is to improve the smoothness of the inside of the hole. When the cylinder is processed, in order to ensure the sealing effect between the inner wall of the cylinder and the piston, the inner wall of the cylinder barrel needs to be reamed. When the cylinder is processed, stainless steel seamless steel pipes are generally used to process the cylinder barrel. When reaming the seamless steel pipe, due to the long length of the cylinder, the depth of the reaming is longer. Due to the continuous feeding of the reamer, the stainless steel material has a strong plastic deformation ability, and the chips are easily extended into a spiral shape to form longer spiral chips. The long spiral chips are easy to entangle the reamer. As the reamer rotates, it is easy to scratch the hole wall and affect the smoothness of the processing. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art that the chips are easily extended into a spiral shape to form longer spiral chips, and the long spiral chips are easily entangled with the reamer. As the reamer rotates, it is easy to scratch the hole wall and affect the smoothness of the processing. A reaming machine for processing the inner hole of the cylinder is proposed.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A reaming machine for processing inner holes of oil cylinders is designed, comprising a workbench, a chuck is fixedly connected to the workbench, a component for cutting and flushing is arranged at one end of the chuck, and a slider is arranged at the other end; The workbench is provided with a slide groove, the slider is slidably arranged in the slide groove, a reciprocating threaded rod is threadedly connected to the slider, the reciprocating threaded rod is rotatably connected in the slide groove through a bearing, a first motor is fixedly connected to the slider, and a reamer is transmission-connected to the output shaft of the first motor; The reciprocating threaded rod is connected to a driven gear, the driven gear is meshed with a driving gear, the driving gear is fixedly connected to a supporting shaft, the supporting shaft is rotatably connected to the workbench via a bearing, a connecting shaft and a driving shaft are rotatably connected to the workbench via a bearing, a first incomplete gear is fixedly connected to the connecting shaft, a second incomplete gear is fixedly connected to the driving shaft, the first incomplete gear is meshed with the driving gear, the second incomplete gear is meshed with the driven gear, and the connecting shaft and the driving shaft are driven by a unidirectional driving mechanism.

[0005] Preferably, the cutting and flushing component includes a support frame, the support frame is fixedly connected to the workbench, a connecting pipe is provided through the support frame, the connecting pipe is connected to a storage box through a connecting hose, the storage box is placed on the workbench, and a high-pressure pump is provided on the connecting hose.

[0006] Preferably, the support frame is threadedly connected with bolts, and the bolts abut against the connecting pipe.

[0007] Preferably, a collection box is placed on the workbench.

[0008] Preferably, the co-directional driving mechanism comprises a second motor, the output shaft of the second motor is drivingly connected to the driving shaft, the driving shaft and the connecting shaft are both fixedly connected with pulleys, and a belt is sleeved between the two pulleys.

[0009] Preferably, the driven gear is rotatably connected to the reciprocating threaded rod through a bearing, the driven gear is fixedly connected with a connecting sleeve, a plurality of abutment blocks are equidistantly arranged on the connecting sleeve, and a plurality of abutment blocks are hingedly connected to an articulated rod, a connecting groove is provided on the reciprocating threaded rod, a limiting groove is provided on the inner wall of the connecting groove, a movable shaft is provided in the connecting groove, a limiting strip is fixedly connected to the movable shaft, and the limiting strip is slidably arranged in the limiting groove, a slave friction wheel is fixedly connected to the movable shaft, a connecting ring is fixedly connected to the slave friction wheel, and the connecting ring is fixedly connected to a slewing bearing, the outer axial surface of the slewing bearing is hingedly connected to a plurality of the articulated rods, a main friction wheel is fixedly connected to the driving shaft, the main friction wheel is staggered with the slave friction wheel, and the slave friction wheel is rotatably connected to a hydraulic rod through a thrust ball bearing.

[0010] Preferably, a protective shell is fixedly connected to the workbench, and the second motor and the hydraulic rod are both fixedly connected to the protective shell.

[0011] Preferably, the second motor is a low-speed motor.

[0012] The present invention proposes a reaming machine for processing inner holes in a cylinder, which has the beneficial effects of interrupting continuous cutting when retracting the tool and forcing the chips to break, which can effectively reduce the generation of long spiral debris and reduce the chips wrapping around the tool, thereby avoiding scratching the hole wall and ensuring the smoothness of the hole wall. Since the processing method is to feed and then retract the tool, the hole wall is processed in sections, forming multiple short-stroke processing intervals, and the chip volume generated at a single time is significantly reduced, reducing the possibility of chips wrapping around or clogging in the hole, and the short chips formed are more easily flushed away from the processing area by the cutting fluid for chip removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a structural schematic diagram of a reaming machine for machining inner holes of a cylinder proposed by the present invention; Figure 2 A three-dimensional diagram of a reaming machine for machining inner holes of a cylinder proposed by the present invention; Figure 3 A three-dimensional diagram of a reamer (protective shell partially hidden) for machining inner holes of a cylinder proposed by the present invention; Figure 4 A reaming machine for machining inner holes of oil cylinders proposed by the present invention Figure 3 A front view of Figure 5 The invention provides a three-dimensional structure of a driven gear and a second incomplete gear part of a reamer for machining the inner hole of a cylinder. Figure 1 ; Figure 6 The invention provides a three-dimensional structure of a driven gear and a second incomplete gear part of a reamer for machining the inner hole of a cylinder. Figure 2 ; Figure 7 A rear view of a driven gear and a second incomplete gear portion of a reamer for machining inner holes of a cylinder proposed by the present invention; Figure 8 A three-dimensional diagram of a part of a same-direction driving mechanism of a reamer for machining inner holes of a cylinder proposed by the present invention; Fig. 9 The present invention provides a stereoscopic view of a reamer for machining inner holes of a cylinder from the friction wheel portion.

[0014] In the figure: 1. workbench; 2. collection box; 3. storage box; 4. chuck; 5. connecting pipe; 6. connecting hose; 7. high-pressure pump; 8. reamer; 9. slide; 10. first motor; 11. slider; 12. reciprocating threaded rod; 13. protective shell; 14. second motor; 15. hydraulic rod; 16. first incomplete gear; 17. pulley; 18. belt; 19. driving gear; 20. connecting shaft; 21. driving shaft; 22. main friction wheel; 23. slave friction wheel; 24. hinged rod; 25. connecting sleeve; 26. moving shaft; 27. abutment block; 28. connecting groove; 29. ​​limit strip; 30. limit groove; 31. supporting shaft; 32. driven gear; 33. second incomplete gear; 34. supporting frame; 35. slewing bearing; 36. connecting ring. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example 1: Reference Figure 1-Figure 8A reaming machine for processing inner holes of an oil cylinder comprises a workbench 1, to which a chuck 4 is fixedly connected, one end of the chuck 4 is provided with a component for cutting and flushing, and the other end is provided with a slider 11, and a stainless steel pipe is clamped and fixed by the chuck 4 to ensure that it coincides with the axis of the reamer 8.

[0017] A slide groove 9 is provided on the workbench 1, and a slider 11 is slidably arranged in the slide groove 9. A reciprocating threaded rod 12 is threadedly connected to the slider 11, and the reciprocating threaded rod 12 is rotatably connected in the slide groove 9 through a bearing. A first motor 10 is fixedly connected to the slider 11, and a tool holder is fixedly connected to the output shaft of the first motor 10. The tool holder fixes the reamer 8, and the reamer 8 is driven to rotate by the rotation of the first motor 10. At the same time, the same-direction driving mechanism drives the reciprocating threaded rod 12 to rotate, driving the slider 11 to slide in the slide groove 9, feeding the reamer 8, so that the reamer reams a hole on the inner wall of the stainless steel pipe.

[0018] A driven gear 32 is connected to the reciprocating threaded rod 12, and a driving gear 19 is meshed with the driven gear 32. The number of teeth of the driving gear 19 is greater than the number of teeth of the driven gear 32, so that when the tool is fed, the feeding distance of the tool each time is greater than the distance of the tool retracted each time. A supporting shaft 31 is fixedly connected to the driving gear 19, and the supporting shaft 31 is rotatably connected to the workbench 1 through a bearing. A connecting shaft 20 and a driving shaft 21 are rotatably connected to the workbench 1 through a bearing. A first incomplete gear 16 is fixedly connected to the connecting shaft 20, and a second incomplete gear 33 is fixedly connected to the driving shaft 21. When the first incomplete gear 16 is meshed with the driving gear 19, the second incomplete gear 33 is separated from the driven gear 32. When the second incomplete gear 33 is meshed with the driven gear 32, the first incomplete gear 16 is separated from the driving gear 19, and they are alternately meshed. The connecting shaft 20 and the driving shaft 21 are driven by a unidirectional driving mechanism. When the connecting shaft 20 and the driving shaft 21 rotate at the same time, first, as shown in Figure 5-Figure 7As shown, the first incomplete gear 16 first meshes with the driving gear 19, and the driving gear 19 meshes with the driven gear 32, and the driven gear 32 drives the reciprocating threaded rod 12 to adjust the position of the slider 11 in the slide groove 9, so that the reamer 8 is fed. After continuous rotation, the first incomplete gear 16 first disengages from the driving gear 19, and the second incomplete gear 33 meshes with the driven gear 32, and the second incomplete gear 33 drives the driven gear 32 to rotate, so that the rotation direction of the driven gear 32 is opposite to the feeding direction, so as to retract the tool, and the number of teeth of the second incomplete gear 33 is much smaller than the number of teeth of the first incomplete gear 16, so that the first incomplete gear 16 is disengaged ... is meshed with the driven gear 32, and the second incomplete gear 33 drives the driven gear 32 to rotate, so that the rotation direction of the driven gear 32 is opposite to the feeding direction, so as to retract the tool, and the number of teeth of the second incomplete gear 33 is much smaller than the number of teeth of the first incomplete gear 16, so that the first incomplete gear 16 is disengaged from the driving gear 19, and the second incomplete gear 33 is disengaged from the driving gear 19, and the second incomplete gear 33 is disengaged from the driven gear 32, The meshing time of the second incomplete gear 33 is shorter than the meshing time of the first incomplete gear 16, so that the feeding distance is greater than the retracting distance. Since the continuous cutting is interrupted when retracting, the chips are forced to break, which can effectively reduce the generation of long spiral debris and reduce the chips wrapping around the tool, thereby avoiding scratching the hole wall and ensuring the smoothness of the hole wall. At the same time, during processing, the processing method is to feed and then retract the tool, forming segmented processing for the hole wall, forming multiple short-stroke processing intervals, and significantly reducing the volume of chips generated at a single time, reducing the possibility of chips wrapping or clogging in the hole, and the short chips are more easily flushed away from the processing area by the cutting fluid for chip removal. The cutting and flushing components include a support frame 34, which is fixedly connected to the workbench 1. A connecting pipe 5 is provided through the support frame 34. The connecting pipe 5 is connected to a storage box 3 through a connecting hose 6. The storage box 3 is placed on the workbench 1. A high-pressure pump 7 is provided on the connecting hose 6. Cutting fluid is placed in the storage box 3. The cutting fluid is sprayed from the connecting pipe 5 through the high-pressure pump 7 and enters the stainless steel pipe. When processing is carried out, it has a flushing effect on the processing area, which is beneficial to the discharge of debris and has a cooling effect on the processing area and the tool.

[0019] Bolts are threadedly connected to the support frame 34, and the bolts are in contact with the connecting pipe 5. By adjusting the position of the connecting pipe 5 on the support frame 34 and then fixing the position of the connecting pipe 5 by tightening the bolts, oil cylinders of different lengths can be processed.

[0020] A collecting box 2 is placed on the workbench 1 , and the collecting box 2 is used to collect chips and cutting fluid to prevent the chips from entering the chute 9 and affecting the movement of the slider 11 .

[0021] The same-direction driving mechanism includes a second motor 14, which is a low-speed motor. The output shaft of the second motor 14 is transmission-connected to the driving shaft 21. The driving shaft 21 and the connecting shaft 20 are both fixedly connected with pulleys 17, and a belt 18 is sleeved between the two pulleys 17. The second motor 14 rotates slowly, and under the action of the pulleys 17 and the belt 18, the driving shaft 21 and the connecting shaft 20 will be driven to rotate in the same direction and at the same speed.

[0022] Embodiment 2: In embodiment 1, the tool needs to be retracted after feeding, which causes the slider 11 to retreat after feeding when resetting, resulting in an extension of the movement distance and the time required for resetting, which is not conducive to the processing process. Figure 1-Figure 9 , as another preferred embodiment of the present invention, based on Example 1.

[0023] The driven gear 32 is rotatably connected to the reciprocating threaded rod 12 through a bearing, and the bearing can be a thrust ball bearing. A connecting sleeve 25 is fixedly connected to the driven gear 32, and a plurality of abutment blocks 27 are arranged at equal distances on the circumference of the connecting sleeve 25. A hinged rod 24 is hinged to each of the abutment blocks 27. When the hydraulic rod 15 is extended, the hinged rod 24 will push the abutment block 27 to move, so that the abutment block 27 abuts against the reciprocating threaded rod 12, so that the reciprocating threaded rod 12 rotates together with the driven gear 32. When the abutment block 27 is separated from the reciprocating threaded rod 12, the abutment block 27 is rotated together with the driven gear 32. , only the reciprocating threaded rod 12 will rotate, a connecting groove 28 is provided on the reciprocating threaded rod 12, a limiting groove 30 is provided on the inner wall of the connecting groove 28, a moving shaft 26 is provided in the connecting groove 28, a limiting strip 29 is fixedly connected to the moving shaft 26, and the limiting strip 29 is slidably provided in the limiting groove 30. When the hydraulic rod 15 extends and retracts to drive the moving shaft 26 to move, the limiting strip 29 will be driven to slide in the limiting groove 30. At the same time, when the moving shaft 26 rotates, the limiting strip 29 and the limiting groove 30 will be driven to rotate simultaneously, thereby driving the reciprocating threaded rod 12 to rotate coaxially.

[0024] The movable shaft 26 is fixedly connected with a slave friction wheel 23, and a connecting ring 36 is fixedly connected to the slave friction wheel 23. The connecting ring 36 is fixedly connected with a slewing bearing 35. The design purpose of the slewing bearing 35 is that when the tool is reset, the rotation of the slave friction wheel 23 will not drive the connecting sleeve 25 to rotate, so that the driven gear 32 does not rotate, and at the same time it can also carry the axial force load. The outer axial surface of the slewing bearing 35 is hinged with multiple hinged rods 24. The driving shaft 21 is fixedly connected with a main friction wheel 22, and the main friction wheel 22 is misaligned with the slave friction wheel 23. The slave friction wheel 23 is rotatably connected with a hydraulic rod 15 through a thrust ball bearing. When resetting, the hydraulic rod 15 is retracted. The hydraulic rod 15 is a hydraulic rod with a The hydraulic telescopic rod with a self-locking function drives the slave friction wheel 23 to move, and the slave friction wheel 23 abuts against the main friction wheel 22, so that the hinged rod 24 pulls the abutment block 27 to move, and the abutment block 27 is disengaged from the abutment against the reciprocating threaded rod 12. When the second motor 14 drives the active shaft 21 to rotate, so that the main friction wheel 22 rotates, it will drive the slave friction wheel 23 to rotate, drive the moving shaft 26 to rotate, and the moving shaft 26 drives the reciprocating threaded rod 12 to rotate, so that only the reciprocating threaded rod 12 rotates, and the driven gear 32 does not rotate, so that the slider 11 will not retreat when moving, so as to drive the slider 11 to reset, reset the position of the tool, save the resetting time, and facilitate the progress of processing.

[0025] When reaming, the stainless steel pipe is fixed with the chuck 4, and the two motors are started. The second motor 14, under the action of the pulley 17 and the belt 18, drives the driving shaft 21 and the connecting shaft 20 to rotate in the same direction and at the same speed. The first incomplete gear 16 drives the driving gear 19 to mesh, and the driving gear 19 meshes and drives the driven gear 32. The driven gear 32 drives the reciprocating threaded rod 12, and the position of the adjusting slider 11 in the slide groove 9 is fed. Then the first incomplete gear 16 is disengaged from the driving gear 19, and the second incomplete gear 33 is meshed with the driven gear 32, and the second incomplete gear 33 drives the driven gear 32 to rotate. , so that the reciprocating threaded rod 12 retracts in the opposite direction of the first rotation, and the reaming is carried out in sections in this cycle, and the cutting fluid is used for flushing during reaming; when resetting, the hydraulic rod 15 retracts, driving the slave friction wheel 23 to move, and the slave friction wheel 23 abuts against the main friction wheel 22, and at the same time, the hinged rod 24 pulls the abutment block 27 to move, and the abutment block 27 is separated from the abutment against the reciprocating threaded rod 12, and the second motor 14 rotates to drive the main friction wheel 22 to rotate, the main friction wheel 22 drives the slave friction wheel 23 to rotate, the slave friction wheel 23 drives the moving shaft 26 to rotate, and the moving shaft 26 drives the reciprocating threaded rod 12 to rotate, so as to reset the tool.

[0026] Example 3: Reference Figure 1-Figure 2As another preferred embodiment of the present invention, on the basis of Embodiment 2, a protective shell 13 is fixedly connected to the workbench 1, and the second motor 14 and the hydraulic rod 15 are both fixedly connected to the protective shell 13. The protective shell 13 prevents the gears from being exposed, which is beneficial to the safety during operation.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reaming machine for machining inner holes of a cylinder, comprising a workbench (1), characterized in that: A chuck (4) is fixedly connected to the workbench (1), and a component for cutting and flushing is provided at one end of the chuck (4), and a slider (11) is provided at the other end; The workbench (1) is provided with a slide groove (9), the slide block (11) is slidably arranged in the slide groove (9), a reciprocating threaded rod (12) is threadedly connected to the slide block (11), the reciprocating threaded rod (12) is rotatably connected to the slide groove (9) via a bearing, the slide block (11) is fixedly connected to a first motor (10), and a reamer (8) is drivingly connected to an output shaft of the first motor (10); The reciprocating threaded rod (12) is connected to a driven gear (32), the driven gear (32) is meshed with a driving gear (19), the driving gear (19) is fixedly connected to a support shaft (31), the support shaft (31) is rotatably connected to the workbench (1) via a bearing, the workbench (1) is rotatably connected to a connecting shaft (20) and a driving shaft (21) via a bearing, the connecting shaft (20) is fixedly connected to a first incomplete gear (16), the driving shaft (21) is fixedly connected to a second incomplete gear (33), the first incomplete gear (16) is meshed with the driving gear (19), the second incomplete gear (33) is meshed with the driven gear (32), and the connecting shaft (20) and the driving shaft (21) are driven by a co-directional driving mechanism.

2. A reaming machine for machining inner holes of a cylinder according to claim 1, characterized in that: The cutting and flushing component comprises a support frame (34), the support frame (34) is fixedly connected to the workbench (1), a connecting pipe (5) is provided through the support frame (34), the connecting pipe (5) is connected to a storage box (3) through a connecting hose (6), the storage box (3) is placed on the workbench (1), and a high-pressure pump (7) is provided on the connecting hose (6).

3. A reaming machine for machining inner holes of a cylinder according to claim 2, characterized in that: The support frame (34) is threadedly connected with a bolt, and the bolt abuts against the connecting pipe (5).

4. A reaming machine for machining inner holes of a cylinder according to claim 3, characterized in that: A collection box (2) is placed on the workbench (1).

5. A reaming machine for machining inner holes of a cylinder according to any one of claims 1 to 4, characterized in that: The same-direction driving mechanism comprises a second motor (14), the output shaft of the second motor (14) being transmission-connected to the driving shaft (21), the driving shaft (21) and the connecting shaft (20) being fixedly connected with pulleys (17), and a belt (18) being sleeved between the two pulleys (17).

6. A reaming machine for machining inner holes of a cylinder according to claim 5, characterized in that: The driven gear (32) is rotatably connected to the reciprocating threaded rod (12) via a bearing; a connecting sleeve (25) is fixedly connected to the driven gear (32); a plurality of abutment blocks (27) are equidistantly arranged on the circumference of the connecting sleeve (25); a hinged rod (24) is hingedly connected to each of the plurality of abutment blocks (27); a connecting groove (28) is provided on the reciprocating threaded rod (12); a limiting groove (30) is provided on the inner wall of the connecting groove (28); a moving shaft (26) is provided in the connecting groove (28); a limiting strip (29) is fixedly connected to the moving shaft (26); the limiting strip (29) is hingedly connected to the connecting groove (28); and the limiting strip (29) is hingedly connected to the connecting groove (28). The positioning bar (29) is slidably arranged in the limiting groove (30); a slave friction wheel (23) is fixedly connected to the movable shaft (26); a connecting ring (36) is fixedly connected to the slave friction wheel (23); a slewing bearing (35) is fixedly connected to the connecting ring (36); an outer axial surface of the slewing bearing (35) is hinged to a plurality of hinged rods (24); a main friction wheel (22) is fixedly connected to the driving shaft (21); the main friction wheel (22) is offset from the slave friction wheel (23); and a hydraulic rod (15) is rotatably connected to the slave friction wheel (23) via a thrust ball bearing.

7. A reaming machine for machining inner holes of a cylinder according to claim 6, characterized in that: A protective shell (13) is fixedly connected to the workbench (1), and the second motor (14) and the hydraulic rod (15) are both fixedly connected to the protective shell (13).

8. A reaming machine for machining inner holes of a cylinder according to claim 7, characterized in that: The second motor (14) is a low-speed motor.

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