A grinding machine for machining mechanical gears

Abstract

The present invention discloses a grinding machine for machining mechanical gears, belonging to the technical field of grinding machines. It includes a grinding machine table board and a gear fixture installed on the grinding machine table board. A workbench is installed on the grinding machine table board, a sliding seat is installed on the workbench, a first motor is slidably installed on the sliding seat, the first motor is installed with a grinding wheel through a transmission shaft. Taking the length direction of the transmission shaft as the transverse direction, the first motor can slide along the transverse direction; a sleeve is sleeved on the outer end of the transmission shaft, a shifting rod is slidably inserted along the longitudinal direction in the sleeve, a first pin shaft is hinged at the center of the shifting rod, and a second pin shaft is hinged at one end of the shifting rod away from the sleeve; a driving wheel and a driven wheel are simultaneously rotatably connected on the workbench, a driving shaft is coaxially connected to the center of the driving wheel, a driven shaft is coaxially connected to the center of the driven wheel, a short rod is connected between the driven shaft and the first pin shaft, and a long rod is connected between the driving shaft and the second pin shaft. The grinding machine of the present invention can machine both sides of the tooth groove, thereby improving the machining efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of grinding machines, and particularly relates to a grinding machine for machining mechanical gears. Background Art

[0002] Before the emergence of gear processing grinding machines, the machine tool manufacturing technology had already developed to a certain extent, providing a basis for the birth of gear processing grinding machines. For example, the emergence of machine tools such as ordinary lathes and milling machines has enabled people to have higher requirements for the accuracy and efficiency of mechanical processing, which has also promoted the research and development and improvement of gear processing grinding machines. In the early days, gear processing mainly relied on manual or simple mechanical tools, and the processing accuracy and efficiency were very low. With the rapid development of the automotive industry, the demand for gears has been increasing continuously, and at the same time, the performance requirements for gears such as accuracy, strength, and wear resistance have become higher and higher. The traditional gear processing methods can no longer meet the needs of the automotive industry, which has promoted the continuous development and improvement of gear processing grinding machines. During the grinding process of the existing grinding machines for the subsequent discussion, usually only one side of the tooth groove can be processed, and the processing efficiency is relatively low. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a grinding machine for machining mechanical gears, which can process both sides of the tooth groove, thereby improving the processing efficiency.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A grinding machine for machining mechanical gears disclosed by the present invention includes a grinding machine table board and a gear fixture installed on the grinding machine table board. A worktable is installed on the grinding machine table board, a sliding seat is installed on the worktable, a first motor is slidably installed on the sliding seat, and a grinding wheel is installed on the first motor through a transmission shaft. Taking the length direction of the transmission shaft as the transverse direction, the first motor can slide along the transverse direction; a sleeve is sleeved on the outer end of the transmission shaft, a shifting rod is slidably inserted along the longitudinal direction in the sleeve, a first pin shaft is hinged at the center of the shifting rod, and a second pin shaft is hinged at one end of the shifting rod away from the sleeve; a driving wheel and a driven wheel are simultaneously rotatably connected to the worktable, a driving shaft is coaxially connected to the center of the driving wheel, a driven shaft is coaxially connected to the center of the driven wheel, a short rod is connected between the driven shaft and the first pin shaft, and a long rod is connected between the driving shaft and the second pin shaft.

[0006] Further, a second motor is fixed on the worktable, the driving shaft is connected to the output end of the second motor, and the driving wheel and the driven wheel are connected by a transmission belt.

[0007] Furthermore, the workbench includes a frustum and a moving seat. The frustum is slidably mounted on the grinding machine table board, and the moving seat is slidably mounted on the frustum. A swing mechanism for controlling the reciprocating swing of the frustum is installed on the grinding machine table board, and a displacement driving device for controlling the longitudinal movement of the moving seat is installed on the frustum.

[0008] Furthermore, a rotating shaft is fixedly installed on the grinding machine table board. A support plate is rotatably mounted on the outer side of the rotating shaft, and the support plate is fixedly connected to the frustum. The swing mechanism includes a telescopic cylinder installed on the grinding machine table board, and the output end of the telescopic cylinder is obliquely connected to the support plate.

[0009] Furthermore, guide rods are installed at the bottom of the frustum, and guide grooves matching with the guide rods are formed on the grinding machine table board.

[0010] Furthermore, the displacement driving device includes a third motor, a rotating gear and a rack. The third motor is fixed on the moving seat, the rack is fixed on the frustum, the output end of the third motor is connected to the rotating gear, and the rotating gear meshes with the rack.

[0011] Furthermore, an opening groove is formed on the short rod, and the first pin shaft is installed in the opening groove and connected to the short rod through a locking member.

[0012] Furthermore, the gear fixture includes a base, a plurality of supports evenly distributed in a ring on the base, and a central disk fixed at the center of the base. Sliders are slidably arranged on the supports, and positioning pins are fixedly installed on one side of the sliders facing the center of the base; limiting grooves matching with the positioning pins are formed on the central disk, an annular groove is formed in the middle of the central disk, and an annular stirrup member is installed in the annular groove. The annular stirrup member is arranged outside the positioning pins and used for clamping the positioning pins along the radial direction of the base.

[0013] The beneficial effects of the present invention are as follows:

[0014] A grinding machine for mechanical gear processing disclosed by the present invention, by installing a bushing at the outer end of the transmission shaft, when the driving wheel rotates, it can drive the driven wheel to rotate. The first pin shaft connected to the driven wheel can drive the lever to act through the short rod, so that the lever drives the bushing to reciprocate horizontally, thereby enabling the grinding wheel to move back and forth horizontally. After the grinding wheel is inserted into the tooth groove of the gear, through the reciprocating action, both sides of the tooth groove can be polished, thus improving the grinding efficiency.

[0015] In the device of the present invention, by setting the transmission of the driving wheel to drive the grinding wheel to move back and forth horizontally, while facilitating the control of the grinding frequency, accurate control of the horizontal displacement can be achieved, avoiding damage to the tooth profile.

[0016] Other advantages, objectives, and features of the present invention will be elaborated in the subsequent description, and to some extent, will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0018] Figure 1 Structural schematic diagram of the grinding machine of the present invention;

[0019] Figure 2 Structural schematic of the workbench of the present invention Figure 1 ;

[0020] Figure 3 For Figure 2 Enlarged view at position B in

[0021] Figure 4 Structural schematic of the workbench of the present invention Figure 2 ;

[0022] Figure 5 Structural schematic diagram of the gear fixture;

[0023] Figure 6 For Figure 5 Enlarged view at position A in

[0024] The reference signs in the drawings are as follows: grinding machine platen 1, gear fixture 2, workbench 3, sliding seat 4, first motor 5, transmission shaft 6, grinding wheel 7, bushing 8, lever 9, first pin shaft 10, second pin shaft 11, driving wheel 12, driven wheel 13, driving shaft 14, driven shaft 15, short rod 16, long rod 17, second motor 18, transmission belt 19, frustum 20, moving seat 21, rotating shaft 22, support plate 23, telescopic cylinder 24, guide groove 25, third motor 26, rotating gear 27, rack 28, opening groove 29, locking member 30, base 31, support 32, center disc 33, slider 34, positioning pin 35, limiting groove 36, annular groove 37, annular stirrup member 38. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] As Figures 1 to 6As shown in the figure, a grinding machine for machining mechanical gears disclosed by the present invention includes a grinding machine table board 1 and a gear fixture 2 installed on the grinding machine table board 1. The gear fixture 2 is used for clamping the gear. When clamping, the lower end of the gear is positioned and installed on the gear fixture 2, and the axis of the gear is along the vertical direction. In some other embodiments, the grinding machine table board 1 is installed on the grinding machine body in a longitudinally slidable manner, and the longitudinal position can be adjusted as needed to meet the needs of the operator. An air dust removal device is installed on the grinding machine body directly above the grinding machine table board 1 to absorb the dust after grinding.

[0026] In the embodiment of the present invention, a workbench 3 is further installed on the grinding machine table board 1. A sliding seat 4 is installed on the workbench 3, and a first motor 5 is slidably installed on the sliding seat 4. The first motor 5 is installed with a grinding wheel 7 through a transmission shaft 6. Taking the length direction of the transmission shaft 6 as the transverse direction, an outer sleeve 8 is sleeved on the outer end of the transmission shaft 6. Driven by the outer sleeve 8, the first motor 5 can slide along the transverse direction.

[0027] Specifically, a shift lever 9 is slidably inserted along the longitudinal direction in the outer sleeve 8. One end of the shift lever 9 cooperating with the outer sleeve 8 extends along the longitudinal direction. A first pin shaft 10 is hinged at the center of the shift lever 9, and a second pin shaft 11 is hinged at one end of the shift lever 9 away from the outer sleeve 8. A driving wheel 12 and a driven wheel 13 are simultaneously rotatably connected to the workbench 3. The driving wheel 12 can be connected to a rotation driving device. Driven by the rotation driving device, the driving wheel 12 rotates, and at the same time, the driven wheel 13 can be driven to rotate together. A driving shaft 14 is coaxially connected to the center of the driving wheel 12, a driven shaft 15 is coaxially connected to the center of the driven wheel 13, and a short rod 16 is connected between the driven shaft 15 and the first pin shaft 10, and a long rod 17 is connected between the driving shaft 14 and the second pin shaft 11.

[0028] During the specific connection operation, the rotation driving device drives the driving wheel 12 to rotate. The driving wheel 12 can drive the driven wheel 13 to rotate together at the same time. The first pin shaft 10 connected to the driven wheel 13 can drive the short rod 16 to rotate with the first pin shaft 10 as the axis. The outer end of the short rod 16 drives the shift lever 9 to act, so that the shift lever 9 drives the outer sleeve 8 to reciprocate along the transverse direction. The long rod 17 plays a role in stabilizing the shift lever 9, so that the grinding wheel 7 reciprocates back and forth along the transverse direction. After the grinding wheel 7 is inserted into the tooth groove of the gear, through the reciprocating action, both sides of the tooth groove can be ground. Compared with the traditional single-side grinding method, the device of the present invention improves the grinding efficiency.

[0029] In this embodiment, a second motor 18 is fixed on the workbench 3. The driving shaft 14 is connected to the output end of the second motor 18. The driving wheel 12 and the driven wheel 13 are connected by a transmission belt 19. By using the connection method of the transmission belt 19, when the driven wheel 13 is subjected to a reaction force, the transmission belt 19 can reduce the impact on the driving wheel 12 caused by the reaction force received by the driven wheel 13, making the transmission more stable.

[0030] In this embodiment, the workbench 3 includes a round table 20 and a moving seat 21. The round table 20 is slidably mounted on the grinding machine table 1, and the moving seat 21 is slidably mounted on the round table 20. A swing mechanism for controlling the reciprocating swing of the round table 20 is installed on the grinding machine table 1, and a displacement driving device for controlling the longitudinal movement of the moving seat 21 is installed on the round table 20. By setting the swing mechanism, the deflection angle of the grinding wheel 7 can be adjusted as needed to meet the needs of different tooth shapes. The displacement driving device can drive the grinding wheel 7 to move longitudinally, so that tooth grooves of different depths can be ground, which can meet the needs of different gear grinding.

[0031] In this embodiment, a rotating shaft 22 is fixedly mounted on the grinding machine table 1, a support plate 23 is rotatably mounted on the outer side of the rotating shaft 22, the support plate 23 is fixedly connected to the round table 20, and the swing mechanism includes a telescopic cylinder 24 mounted on the grinding machine table 1, and the output end of the telescopic cylinder 24 is obliquely connected to the support plate 23. The telescopic cylinder 24 is used to control its deflection, which is more convenient to control.

[0032] In this embodiment, a guide rod is installed at the bottom of the truncated table 20, and a guide groove 25 cooperating with the guide rod is provided on the grinding machine table 1. By setting the cooperation between the guide rod and the guide groove 25, the deflection of the truncated table 20 can be guided, making its movement process more stable. Furthermore, in an embodiment of the present invention, the displacement drive device includes a third motor 26, a rotating gear 27 and a rack 28. The third motor 26 is fixed on the moving seat 21, and the rack 28 is fixed on the truncated table 20. The output end of the third motor 26 is connected to the rotating gear 27, and the rotating gear 27 is meshed with the rack 28. In some other embodiments, the displacement drive device can also use a traditional linear motor to connect the output end of the linear motor to the displacement seat, but this arrangement is not convenient for leaving space for the linear motor, and the structural arrangement is not very reasonable.

[0033] In this embodiment, an open slot 29 is provided on the short rod 16, and the first pin 10 is installed in the open slot 29 and connected to the short rod 16 through a locking member 30. By adjusting the different positions of the first pin 10 in the open slot 29, the position between the first pin 10 and the lever 9 can be adjusted, so that the toggle range of the lever 9 can be adjusted. For example, when high-precision gear processing is required, the toggle range of the lever 9 needs to be reduced to make the grinding process more delicate, and the grinding accuracy of the gear can be improved at the same frequency.

[0034] In this embodiment, the gear fixture 2 includes a base 31, a plurality of supports 32 evenly distributed in a ring on the base 31, and a central disk 33 fixed at the center of the base 31. A slider 34 is slidably arranged on the support 32, and a positioning pin 35 is fixedly installed on one side of the slider 34 facing the center of the base 31. A limiting groove 36 matching the positioning pin 35 is formed on the central disk 33, and an annular groove 37 is formed in the middle of the central disk 33. An annular stirrup member 38 is installed in the annular groove 37. The annular stirrup member 38 is a spiral spring arranged in a ring, and the annular stirrup member 38 is arranged outside the positioning pin 35 to tightly hoop the positioning pin 35 along the radial direction of the base 31. After the annular stirrup member 38 tightly hoops the positioning pin 35 along the radial direction, each positioning pin 35 can press the gear tightly. After locking the position between the slider 34 and the support 32, the stability of the gear clamping is ensured. Before removing the gear, loosen the nut between the slider 34 and the support 32, and directly push the positioning pin 35 in the reverse direction. By adopting this method, the clamping efficiency of the gear can be improved.

[0035] In the embodiment of the present invention, a screw rod is fixed on the support 32, and a positioning groove matching the screw rod is formed on the slider 34. The slider 34 can be slid along the radial direction to adjust the positions of the slider 34 and the positioning pin 35. A nut is connected to the screw rod, and the position between the screw rod and the slider 34 can be fixed by the nut.

[0036] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A grinding machine for machining mechanical gears, comprising a grinding machine table and a gear fixture mounted on the grinding machine table, characterized in that: The drive shaft is provided with a first motor and a second motor is provided with a transmission belt, and the first motor and the second motor are connected with a transmission belt through the transmission belt; the first motor and the second motor are connected with a transmission belt through the transmission belt; the outer end of the transmission shaft is provided with a sleeve, and a lever is provided in the sleeve for sliding along the longitudinal direction; the center of the lever is hinged with a first pin, and the center of the lever is hinged with a second pin away from one end of the lever sleeve; a driving wheel and a driven wheel are simultaneously rotatably connected on the workbench, the center of the driving wheel is coaxially connected to the driving shaft, the center of the driven wheel is coaxially connected to the driven shaft, a short rod is connected between the driven shaft and the first pin, and a long rod is connected between the driving shaft and the second pin; a second motor is fixed on the workbench, the driving shaft is connected to the output end of the second motor, and the driving wheel and the driven wheel are connected by a transmission belt; the workbench comprises a circular table and a movable seat, the circular table is slidably mounted on the grinding machine table, and the movable seat slides The cam is installed on the table, and a swing mechanism for controlling the reciprocating swing of the table is installed on the table, and a displacement driving device for controlling the movable seat to move along the longitudinal direction is installed on the table; a rotating shaft is fixedly installed on the table, and a support plate is rotatably installed on the outer side of the rotating shaft, and the support plate is fixedly connected to the table, and the swing mechanism includes a telescopic cylinder installed on the table, and the output end of the telescopic cylinder is obliquely connected to the support plate; a guide rod is installed at the bottom of the table, and a guide groove cooperating with the guide rod is provided on the table; the gear clamp includes a base, a plurality of supports evenly distributed on the base in an annular manner, and a center disk fixed at the center of the base, a slider is slidably provided on the support, and a positioning pin is fixedly installed on the side of the slider facing the center of the base; a limiting groove cooperating with the positioning pin is provided on the center disk, and an annular groove is provided in the middle of the center disk, and an annular hoop reinforcement is installed in the annular groove, and the annular hoop reinforcement is arranged on the outer side of the positioning pin for hooping the positioning pin along the radial direction of the base.

2. A mechanical gear processing grinding machine according to claim 1, characterized in that: The displacement driving device includes a third motor, a rotating gear and a rack. The third motor is fixed on the moving seat, the rack is fixed on the round table, and the output end of the third motor is connected to the rotating gear, which is meshed with the rack.

3. A mechanical gear processing grinding machine according to claim 1, characterized in that: The short rod is provided with an open slot, and the first pin shaft is installed in the open slot and connected to the short rod through a locking piece.

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