Grinding machine for mechanical gear machining

Abstract

The invention discloses a grinding machine for mechanical gear machining, which belongs to the technical field of grinding machines, and comprises a grinding machine bedplate and a gear clamp mounted on the grinding machine bedplate, a workbench is mounted on the grinding machine bedplate, a sliding seat is mounted on the workbench, a first motor is mounted on the sliding seat in a sliding manner, and a grinding wheel is mounted on the first motor through a transmission shaft; the first motor can slide along the transverse direction by taking the length direction of the transmission shaft as the transverse direction; a deflector rod slidably penetrates through the shaft sleeve in the longitudinal direction, a first pin shaft is hinged to the center of the deflector rod, and a second pin shaft is hinged to the end, away from the shaft sleeve, of the deflector rod; a driving wheel and a driven wheel are rotationally connected to the workbench at the same time, 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 can machine the two sides of a tooth groove, and therefore the machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of grinders, and in particular relates to a grinder for machining mechanical gears. Background Art

[0002] Before the emergence of gear processing grinders, machine tool manufacturing technology had already developed to a certain extent, providing a foundation for the birth of gear processing grinders. For example, the emergence of ordinary lathes, milling machines and other machine tools has made people have higher requirements for the accuracy and efficiency of mechanical processing, which has also prompted the research and development and improvement of gear processing grinders. Early 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 automobile industry, the demand for gears has continued to increase, and at the same time, the requirements for gear accuracy, strength, wear resistance and other performance have become higher and higher. Traditional gear processing methods can no longer meet the needs of the automotive industry, which has prompted the continuous development and improvement of gear processing grinders. During the grinding process of the existing grinders, usually only one side of the tooth groove can be processed, and the processing efficiency is low. Summary of the invention

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

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention discloses a grinding machine for mechanical gear processing, comprising a grinding machine table and a gear fixture installed on the grinding machine table, wherein a workbench is installed on the grinding machine table, a slide seat is installed on the workbench, a first motor is slidably installed on the slide seat, a grinding wheel is installed on the first motor through a transmission shaft, and the length direction of the transmission shaft is transverse, and the first motor can slide in the transverse direction; a shaft sleeve is provided on the outer end of the transmission shaft, a shift rod is penetrated in the shaft sleeve along the longitudinal sliding direction, a first pin is hinged at the center of the shift rod, and a second pin is hinged at one end of the shift rod away from the shaft sleeve; a driving wheel and a driven wheel are 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.

[0006] Furthermore, 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.

[0007] Furthermore, the workbench includes a circular table and a movable seat, the circular table is slidably mounted on the grinding machine table, the movable seat is slidably mounted on the circular table, a swing mechanism for controlling the reciprocating swing of the circular table is mounted on the grinding machine table, and a displacement drive device for controlling the movable seat to move longitudinally is mounted on the circular table.

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

[0009] Furthermore, a guide rod is installed at the bottom of the circular table, and a guide groove cooperating with the guide rod is opened on the grinding machine table.

[0010] Furthermore, the displacement drive 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, the output end of the third motor is connected to the rotating gear, and the rotating gear is meshed with the rack.

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

[0012] Furthermore, the gear clamp includes a base, a plurality of supports evenly distributed in an annular shape on the base, and a center disk fixed at the center of the base, a slider is slidably arranged 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, an annular groove is provided in the middle of the center disk, an annular hoop is installed in the annular groove, and the annular hoop is arranged on the outer side of the positioning pin for tightening the positioning pin along the radial direction of the base.

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

[0014] The present invention discloses a grinding machine for machining mechanical gears. By installing a shaft sleeve on the outer end of a transmission shaft, when the driving wheel rotates, the driven wheel can be driven to rotate. The first pin shaft connected to the driven wheel can drive the lever to move through a short rod, so that the lever drives the shaft sleeve to move back and forth in the lateral direction, thereby allowing the grinding wheel to move back and forth in the lateral direction. After the grinding wheel is inserted into the tooth groove of the gear, the two side surfaces of the tooth groove can be ground through the reciprocating action, thereby improving the grinding efficiency.

[0015] In the device of the present invention, the driving wheel is arranged to drive the grinding wheel to move back and forth in the lateral direction, which is convenient for controlling the grinding frequency and can realize accurate control of the lateral displacement to avoid damage to the tooth shape.

[0016] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0018] Figure 1 It is a structural schematic diagram of the grinding machine of the present invention;

[0019] Figure 2 The structure of the workbench of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 3 for Figure 2 The enlarged view of point B in the middle;

[0021] Figure 4 The structure of the workbench of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 5 It is the structural schematic diagram of the gear fixture;

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0024] The markings in the accompanying drawings are as follows: grinding machine table 1, gear fixture 2, workbench 3, slide 4, first motor 5, transmission shaft 6, grinding wheel 7, bushing 8, lever 9, first pin 10, second pin 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, round table 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 piece 30, base 31, support 32, center disk 33, slider 34, positioning pin 35, limit groove 36, annular groove 37, annular hoop reinforcement 38. DETAILED DESCRIPTION

[0025] like Figures 1 to 6As shown, the present invention discloses a grinder for machining mechanical gears, comprising a grinder platen 1 and a gear fixture 2 mounted on the grinder platen 1. The gear fixture 2 is used to clamp the gear. When clamping, the lower end of the gear is positioned and mounted on the gear fixture 2, and the axis of the gear is along the vertical direction. In some other embodiments, the grinder platen 1 is mounted on the grinder body in a longitudinally slidable manner, and the longitudinal position can be adjusted as needed to meet the needs of the operator. A dust removal device is installed on the grinder body directly above the grinder platen 1 to absorb dust after grinding.

[0026] In the embodiment of the present invention, a workbench 3 is also installed on the grinding machine platen 1, a slide 4 is installed on the workbench 3, a first motor 5 is slidably installed on the slide 4, and the first motor 5 is installed with a grinding wheel 7 through a transmission shaft 6. The length direction of the transmission shaft 6 is taken as the transverse direction, and a shaft sleeve 8 is provided on the outer end sleeve of the transmission shaft 6. Under the driving action of the shaft sleeve 8, the first motor 5 can slide in the transverse direction.

[0027] Specifically, a lever 9 is provided in the shaft sleeve 8 for sliding along the longitudinal direction, and one end of the lever 9 that cooperates with the shaft sleeve 8 extends along the longitudinal direction. A first pin 10 is hinged at the center of the lever 9, and a second pin 11 is hinged at the end of the lever 9 away from the shaft sleeve 8. A driving wheel 12 and a driven wheel 13 are connected to the workbench 3 for simultaneous rotation. The driving wheel 12 can be connected to a rotation drive device. Under the driving action of the rotation drive device, the driving wheel 12 rotates and can drive the driven wheel 13 to rotate together. A driving shaft 14 is coaxially connected to the center of the driving wheel 12, and a driven shaft 15 is coaxially connected to the center of the driven wheel 13. A short rod 16 is connected between the driven shaft 15 and the first pin 10, and a long rod 17 is connected between the driving shaft 14 and the second pin 11.

[0028] During the specific connection action, the rotating driving device drives the active wheel 12 to rotate, and the active wheel 12 can also drive the driven wheel 13 to rotate together. 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 lever 9 to move, so that the lever 9 drives the sleeve 8 to move back and forth laterally. The long rod 17 plays a role in stabilizing the lever 9, so that the grinding wheel 7 can move back and forth laterally. After the grinding wheel 7 is inserted into the tooth groove of the gear, the reciprocating back and forth action can achieve grinding of both sides of the tooth groove. Compared with the traditional single-sided 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, and the driving wheel 12 and the driven wheel 13 are connected by a transmission belt 19. By adopting the transmission belt 19 for connection, when the driven wheel 13 is subjected to a reaction force, the transmission belt 19 can reduce the impact of the driven wheel 13 on the driving wheel 12, so that the transmission is 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 clamp 2 includes a base 31, a plurality of supports 32 evenly distributed in an annular manner on the base 31, and a center 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 the side of the slider 34 facing the center of the base 31; a limiting groove 36 cooperating with the positioning pin 35 is provided on the center disk 33, and an annular groove 37 is provided in the middle of the center disk 33, and an annular hoop 38 is installed in the annular groove 37. The annular hoop 38 adopts a spiral spring arranged in an annular manner, and the annular hoop 38 is arranged on the outside of the positioning pin 35 to tighten the positioning pin 35 along the radial direction of the base 31. After the annular hoop 38 tightens the positioning pin 35 along the radial direction, each positioning pin 35 can press the gear, and after the position between the slider 34 and the support 32 is locked, 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 out in the opposite direction. This method can improve the clamping efficiency of the gear.

[0035] In the embodiment of the present invention, a screw is fixed on the support 32, and a positioning groove cooperating with the screw is opened on the slider 34. The slider 34 can be slid radially to adjust the position of the slider 34 and the positioning pin 35. A nut is connected to the screw, and the position between the screw 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 it. 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: A workbench is installed on the grinding machine table, a slide is installed on the workbench, a first motor is slidably installed on the slide, a grinding wheel is installed on the first motor through a transmission shaft, and the length direction of the transmission shaft is horizontal, and the first motor can slide horizontally; a shaft sleeve is provided on the outer end of the transmission shaft, a shift rod is inserted into the shaft sleeve along the longitudinal sliding direction, a first pin is hinged at the center of the shift rod, and a second pin is hinged at one end of the shift rod away from the shaft sleeve; a driving wheel and a driven wheel are simultaneously rotatably connected to 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.

2. A mechanical gear processing grinding machine according to claim 1, characterized in that: 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 via a transmission belt.

3. A mechanical gear processing grinding machine according to claim 2, characterized in that: The workbench includes a circular table and a movable seat, the circular table is slidably mounted on the grinding machine table, the movable seat is slidably mounted on the circular table, a swing mechanism for controlling the reciprocating swing of the circular table is mounted on the grinding machine table, and a displacement driving device for controlling the movable seat to move longitudinally is mounted on the circular table.

4. A mechanical gear processing grinding machine according to claim 3, characterized in that: A rotating shaft is fixedly mounted on the grinding machine table, a support plate is rotatably mounted on the outer side of the rotating shaft, the support plate is fixedly connected to the round table, and the swing mechanism includes a telescopic cylinder mounted on the grinding machine table, and an output end of the telescopic cylinder is obliquely connected to the support plate.

5. A mechanical gear processing grinding machine according to claim 4, characterized in that: A guide rod is installed at the bottom of the circular table, and a guide groove matched with the guide rod is opened on the grinding machine table.

6. A mechanical gear processing grinding machine according to claim 3, 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.

7. 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.

8. A mechanical gear processing grinding machine according to any one of claims 1 to 7, characterized in that: The gear clamp includes a base, a plurality of supports evenly distributed in an annular manner on the base, and a center disk fixed at the center of the base, a slider is slidably arranged 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, an annular groove is provided in the middle of the center disk, an annular hoop is installed in the annular groove, and the annular hoop is arranged on the outside of the positioning pin for tightening the positioning pin along the radial direction of the base.

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