Numerical control grinding machine driving device and numerical control grinding machine

Abstract

The utility model relates to a numerical control grinding machine driving device and a numerical control grinding machine, and relates to the technical field of machining. The swing rod rotates to drive the first driving roller to make contact with a workpiece, the first driving piece drives the first driving roller to rotate, and then the workpiece is driven to rotate. The device realizes effective driving of workpieces which have no central holes or are not suitable for being driven by a clamp, and improves the machining efficiency and the automation degree.

Description

Technical Field

[0001] This application relates to the field of precision machine tools, and more particularly to a driving device for a numerically controlled grinding machine and a numerically controlled grinding machine. Background Art

[0002] A grinding machine is an important device in mechanical precision machining, which can perform high-precision and high-efficiency surface machining on workpieces. When the grinding machine performs surface machining on a workpiece, it is necessary to drive the workpiece to rotate in order to uniformly machine the circumferential surface of the workpiece.

[0003] Traditional grinding machines usually use a spindle tailstock or a fixture to clamp the workpiece, and drive the spindle to rotate to drive the workpiece to rotate, so as to realize grinding machining. However, this machining method is powerless when facing workpieces without a center hole, because workpieces without a center hole cannot be fixed on the spindle tailstock by the way of being tightened, and thus rotational machining cannot be realized. Summary of the Utility Model

[0004] In order to facilitate the machining of workpieces without a center hole, this application provides a driving device for a numerically controlled grinding machine and a numerically controlled grinding machine. The driving device for the numerically controlled grinding machine adopts the following technical solutions:

[0005] A driving device for a numerically controlled grinding machine, comprising:

[0006] A mounting seat for fixedly connecting to a grinding machine bed;

[0007] A work carriage mounted on the grinding machine bed or the mounting seat and provided with a V-shaped positioning groove for placing a workpiece;

[0008] A swing rod having one end rotatably connected to the mounting seat;

[0009] A first driving roller rotatably connected to the end of the swing rod away from the mounting seat; and

[0010] A first driving member fixedly connected to the end of the swing rod away from the mounting seat and used for driving the first driving roller to rotate;

[0011] Wherein, the rotation axis of the swing rod is parallel to the rotation axis of the first driving roller, and the swing rod rotates to drive the first driving roller to move and is used for contacting the surface of the workpiece in the positioning groove.

[0012] By adopting the above technical solutions, the workpiece is supported by the workpiece carriage, the swing rod swings so that the first driving roller contacts the surface of the workpiece, the first driving roller rotates under the drive of the first driving member, and under the action of friction, the first driving roller drives the workpiece to rotate.

[0013] Optionally, a rotary oil cylinder is fixedly connected to the mounting seat, and the rotary oil cylinder is used for driving the swing rod to rotate.

[0014] By adopting the above technical solution, the swing arm is driven to rotate by a rotary cylinder, and it can be automatically loosened after processing is completed, which is convenient for material collection and discharge, and is also convenient for use with automated equipment.

[0015] Optionally, the rocker arm is fixedly connected to a connecting sleeve, the connecting sleeve is passed through the mounting seat and the two are rotationally connected via a ball bearing, the driving shaft of the rotating cylinder is coaxially passed through the connecting sleeve, and the driving shaft of the rotating cylinder is connected to the connecting sleeve via a flat key.

[0016] By adopting the above technical solution, the axial front and rear force of the rocker arm will be applied to the mounting seat through the connecting sleeve, and the driving shaft of the rotary cylinder mainly bears the torque driving the rocker arm to rotate, so the overall structure is more stable and reliable.

[0017] Optionally, one end of the rocker arm is fixedly connected to a bearing seat, the bearing seat is rotatably connected to a connecting shaft via a ball bearing, the first driving roller is sleeved on one end of the connecting shaft and the two are fixedly connected, and the output shaft of the first driving member is passed through the connecting shaft and the two are connected via a flat key.

[0018] Optionally, an adjustment structure is installed at one end of the rocker arm, and the adjustment structure includes a fixed block, an adjustment bolt threadedly connected to the fixed block, and a support block fixedly connected to the machine tool bed. When the rocker arm swings close to the working bracket, the adjustment bolt contacts the support block.

[0019] By adopting the above technical solution, stable rotation of the first driving roller and effective transmission of power are achieved.

[0020] Optionally, it also includes a second driving member and a second driving roller, the second driving member drives the second driving roller to rotate, the second driving roller is located below the working bracket, the working bracket is provided with a clearance gap for the second driving roller to make way, when the workpiece is placed in the positioning groove, the second driving roller contacts the workpiece, and the rotation speed of the second driving roller is the same as that of the first driving roller.

[0021] By adopting the above technical solution, two driving rollers drive the workpiece at the same time. The two driving rollers are controlled by two independent driving parts to ensure the same rotation speed. The two driving rollers are located above and below the workpiece to ensure uniform force, thereby driving smoothly.

[0022] Optionally, the distance between the rotation axis of the first drive roller and the rotation axis of the rotating cylinder main shaft is smaller than the distance between the center of the positioning groove and the rotation axis of the rotating cylinder main shaft, and the second drive roller is located directly below the positioning groove.

[0023] Optionally, the first driving member and / or the second driving member is a hydraulic motor.

[0024] By adopting the above technical solution, the hydraulic motor has high and constant torque output and can be directly connected to the driving roller without a speed reducer.

[0025] Optionally, it further includes a sliding seat, and the mounting seat, the second driving member and the working bracket are all mounted on the sliding seat, and the sliding seat is slidably connected to the bed body.

[0026] By adopting the above technical solution, the processing range is wider and the adaptability of the grinding machine is stronger.

[0027] The numerical control grinding machine adopts the following technical solution:

[0028] A numerical control grinding machine, characterized in that it includes a driving device.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. Using the workpiece bracket to support the workpiece, the first driving roller drives the workpiece to rotate, so that even if the workpiece has no center hole for clamping and is not suitable for being driven by a fixture, it can also be driven by pressing with the roller, thus solving the limitation problems existing in the traditional driving method;

[0031] 2. Adopting a rotary oil cylinder to drive the swing rod to rotate, realizing the automatic clamping and loosening of the first driving roller and the workpiece, facilitating the realization of automated processing and improving the processing efficiency;

[0032] 3. Through the setting of the adjusting structure, the swinging position of the swing rod can be accurately adjusted, further improving the accuracy and stability of the driving. Description of the Drawings

[0033] Figure 1 It is a schematic diagram of the driving device in Embodiment 1 for display.

[0034] Figure 2 It is a sectional view of the driving device in Embodiment 1 for display.

[0035] Figure 3 It is a schematic diagram of the driving device in Embodiment 2 for display.

[0036] Description of the reference numerals: 101, mounting seat; 102, working bracket; 103, swing rod; 104, first driving roller; 105, first driving member; 106, positioning groove; 107, fixing block; 108, adjusting bolt; 109, support block; 110, second driving member; 111, second driving roller; 112, connecting sleeve; 113, end cover; 114, bearing seat; 115, connecting shaft; 116, sliding seat; 117, rotary oil cylinder; 200, grinding wheel. Detailed Description of the Embodiment

[0037] The following is combined with the attachedFigures 1-3 Further detailed description of the present application is provided.

[0038] Embodiment 1

[0039] This embodiment discloses a driving device for a numerical control grinding machine. Referring to Figure 1 and Figure 2 , it includes a mounting base 101, a working carriage 102, a swing rod 103, a first driving roller 104, and a first driving member 105.

[0040] The mounting base 101 is used for fixedly connecting to the grinding machine bed to provide a stable support foundation. One end of the swing rod 103 is rotatably connected to the mounting base 101 through a bearing structure, enabling it to swing freely within a certain range. The first driving roller 104 is rotatably connected to the other end of the swing rod 103 and relatively rotates with the swing rod 103 through a bearing structure. The rotation axis of the swing rod 103 is parallel to the rotation axis of the first driving roller 104, enabling the first driving roller 104 to effectively contact the surface of the workpiece on the working carriage 102, thereby driving the workpiece to rotate. The first driving member 105 is fixedly connected to the swing rod 103 and is used to provide power and drive the first driving roller 104 to rotate. A rotary oil cylinder 117 is fixedly connected to the mounting base 101, and the rotary oil cylinder 117 is used to drive the swing rod 103 to rotate.

[0041] The working carriage 102 is installed on the grinding machine bed or the mounting base 101, and is provided with a V-shaped positioning groove 106 thereon. This positioning groove 106 is used to stably place the workpiece. In order to reduce the friction between the inner wall of the positioning groove 106 and the workpiece, the inner wall of the positioning groove 106 is provided with a coating with a low friction coefficient through a coating process, such as a DLC coating, a MoS2 (molybdenum disulfide) coating, etc.; alternatively, a lining material with a low friction coefficient, such as a polytetrafluoroethylene sheet, can be fixedly connected to the inner wall of the positioning groove 106. The distance between the rotation axis of the first driving roller 104 and the main shaft rotation axis of the rotary oil cylinder 117 is less than the distance between the center of the positioning groove 106 and the main shaft rotation axis of the rotary oil cylinder 117.

[0042] In order to facilitate the precise adjustment of the swinging position of the swing rod 103, this embodiment also provides an adjustment structure. The adjustment structure includes a fixed block 107, an adjustment bolt 108, and a support block 109.

[0043] The fixed block 107 is installed at one end of the swing rod 103. The fixed block 107 is L-shaped, and one end is fixedly connected to the swing rod 103 through bolts. The adjusting bolt 108 penetrates through the end of the fixed block 107 away from the swing rod 103. The adjusting bolt 108 is threadedly connected to the fixed block 107 and can adjust the extending length of the adjusting bolt 108 by rotation. The support block 109 is fixedly connected to the machine tool bed, and the support block 109 is located on the side of the working bracket 102 away from the rotary oil cylinder 117. During the swinging process of the swing rod 103, the adjusting bolt 108 will contact the support block 109, thereby restricting the continuous swinging of the swing rod 103.

[0044] By adjusting the extending length of the adjusting bolt 108, the swinging angle and position of the swing rod 103 can be accurately controlled, thereby ensuring that the first driving roller 104 can stably contact the workpiece surface and apply appropriate pressure. This design not only improves the accuracy and stability of driving, but also provides convenience for subsequent automated processing.

[0045] The driving device further includes a second driving member 110 and a second driving roller 111. The second driving member 110 drives the second driving roller 111 to rotate. The second driving roller 111 is located directly below the working bracket 102. The working bracket 102 is provided with a relief notch for the second driving roller 111 to give way. When the workpiece is placed in the positioning groove 106, the second driving roller 111 contacts the workpiece, and the rotation speed of the second driving roller 111 is the same as that of the first driving roller 104. The two driving rollers drive the workpiece simultaneously. The two driving rollers are controlled by two independent driving members to ensure the same rotation speed. The two driving rollers are located above and below the workpiece, which can ensure uniform force and thus drive smoothly.

[0046] In this embodiment, both the first driving member 105 and the second driving member 110 are hydraulic motors. The hydraulic motors have high and constant torque output and can be directly connected to the driving rollers without a speed reducer.

[0047] Refer to Figure 2 , the bearing structure between the swing rod 103 and the mounting seat 101 is specifically as follows. The swing rod 103 is fixedly connected with a connecting sleeve 112. The connecting sleeve 112 is sleeved on one end of the swing rod 103, and the shoulder of the connecting sleeve 112 contacts one side of the swing rod 103. One end of the connecting sleeve 112 is threadedly connected with an end cover 113, and the edge of the end cover 113 contacts the other side of the swing rod 103. The shoulder of the connecting sleeve 112 and the end cover 113 limit the axial position of the swing rod 103, and the circumferential limitation between the swing rod 103 and the connecting sleeve 112 is achieved through a flat key.

[0048] The connecting sleeve 112 is inserted through the mounting seat 101, and the two are rotatably connected through a ball bearing. The driving shaft of the rotary oil cylinder 117 is coaxially inserted through the connecting sleeve 112. The driving shaft of the rotary oil cylinder 117 is connected to the connecting sleeve 112 through a flat key. The force acting axially forward and backward on the swing rod 103 will be applied to the mounting seat 101 through the connecting sleeve 112, while the driving shaft of the rotary oil cylinder 117 mainly bears the torque for driving the swing rod 103 to rotate, making the overall structure more stable and reliable.

[0049] Referring to Figure 2 , the bearing structure between the first driving roller 104 and the swing rod 103 is specifically as follows:

[0050] One end of the swing rod 103 is fixedly connected with a bearing seat 114 through a bolt. The bearing seat 114 is rotatably connected with a connecting shaft 115 through a ball bearing. The first driving roller 104 is sleeved on one end of the connecting shaft 115 and the two are fixedly connected. The first driving member 105 is fixedly connected to the swing rod 103 through a bolt, and the output shaft of the first driving member 105 is inserted through the connecting shaft 115 and the two are connected through a flat key.

[0051] The implementation principle of Embodiment 1 is as follows: During actual use, when the workpiece is placed in the positioning groove 106 of the work bracket 102, the swing rod 103 will swing under the action of the rotary oil cylinder 117, driving the first driving roller 104 to approach the workpiece and gradually pressing it. Subsequently, the first driving member 105 is started, and the workpiece is driven to rotate by driving the first driving roller 104 to rotate, thereby realizing the grinding process of the workpiece. This driving method is not only applicable to workpieces without a center hole or unsuitable for being driven by a fixture, but also can improve the processing efficiency and automation level and reduce the operation difficulty.

[0052] Embodiment 2

[0053] This embodiment discloses a numerical control grinding machine. Referring to Figure 3 , this grinding machine includes the numerical control grinding machine driving device described in the foregoing embodiment. The driving device further includes a sliding seat 116. The mounting seat 101, the second driving member 110, and the work bracket 102 are all mounted on the sliding seat 116. The sliding seat 116 is slidably connected to the bed body, and the sliding direction is parallel to the axis of the first driving roller 104. The rotation axis of the grinding wheel 200 of the grinding machine is also parallel to the axis of the first driving roller 104 and is located on the side of the work bracket 102 away from the rotary oil cylinder. The grinding wheel 200 moves laterally closer to the workpiece to process the workpiece. The sliding seat 116 moves to enable the grinding wheel 200 to process different positions axially of the workpiece.

[0054] The implementation principle of Embodiment 2 is as follows: The CNC grinding machine can effectively process workpieces without center holes or workpieces that are not suitable for being driven by fixtures. This not only expands the processing range of the grinding machine, but also improves its adaptability and flexibility. At the same time, due to the advantages of simple structure, convenient operation, low cost, etc. of the driving device, it can be widely applied to various CNC grinding machines, bringing substantial technological progress and economic benefit improvement to the mechanical processing industry.

[0055] The above are all preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A CNC grinding machine driving device, characterized in that: include A mounting seat (101), the mounting seat (101) being used for fixedly connecting to a grinding machine bed; A working bracket (102), the working bracket (102) is mounted on a grinding machine bed or a mounting seat (101) and is provided with a V-shaped positioning groove (106), wherein the positioning groove (106) is used to place a workpiece; A swing rod (103), one end of the swing rod (103) being rotatably connected to the mounting seat (101); A first driving roller (104) rotatably connected to an end of the swing rod (103) away from the mounting seat (101); and A first driving member (105) is fixedly connected to an end of the swing rod (103) away from the mounting seat (101) and is used to drive the first driving roller (104) to rotate; The rotation axis of the swing rod (103) is arranged parallel to the rotation axis of the first driving roller (104); the swing rod (103) rotates to drive the first driving roller (104) to move and to contact the surface of the workpiece in the positioning groove (106).

2. A CNC grinding machine driving device according to claim 1, characterized in that: The mounting seat (101) is fixedly connected to a rotating oil cylinder (117), and the rotating oil cylinder (117) is used to drive the swing rod (103) to rotate.

3. A CNC grinding machine driving device according to claim 2, characterized in that: The swing rod (103) is fixedly connected to a connecting sleeve (112), the connecting sleeve (112) is inserted into the mounting seat (101), and the two are rotationally connected via a ball bearing, the drive shaft of the rotary oil cylinder (117) is coaxially inserted into the connecting sleeve (112), and the drive shaft of the rotary oil cylinder (117) is connected to the connecting sleeve (112) via a flat key.

4. A CNC grinding machine driving device according to claim 2, characterized in that: One end of the swing rod (103) is fixedly connected to a bearing seat (114), and the bearing seat (114) is rotatably connected to a connecting shaft (115) via a ball bearing; the first driving roller (104) is sleeved on one end of the connecting shaft (115) and the two are fixedly connected; the output shaft of the first driving member (105) is passed through the connecting shaft (115) and the two are connected via a flat key.

5. A CNC grinding machine driving device according to claim 2, characterized in that: An adjustment structure is installed at one end of the swing arm (103), the adjustment structure comprising a fixed block (107), an adjustment bolt (108) threadedly connected to the fixed block (107), and a support block (109) fixedly connected to a machine tool bed, and when the swing arm (103) swings close to the working bracket (102), the adjustment bolt (108) contacts the support block (109).

6. A CNC grinding machine driving device according to any one of claims 1 to 5, characterized in that: The invention also comprises a second driving member (110) and a second driving roller (111), wherein the second driving member (110) drives the second driving roller (111) to rotate, and the second driving roller (111) is located below the working bracket (102). The working bracket (102) is provided with a clearance notch for the second driving roller (111) to make way for the second driving roller (111). When a workpiece is placed in the positioning groove (106), the second driving roller (111) contacts the workpiece, and the rotation speed of the second driving roller (111) is the same as the rotation speed of the first driving roller (104).

7. A CNC grinding machine driving device according to claim 6, characterized in that: The distance between the rotation axis of the first driving roller (104) and the rotation axis of the main shaft of the rotating oil cylinder (117) is smaller than the distance between the center of the positioning groove (106) and the rotation axis of the main shaft of the rotating oil cylinder (117), and the second driving roller (111) is located directly below the positioning groove (106).

8. The CNC grinding machine driving device according to claim 6, characterized in that: The first driving member (105) and / or the second driving member (110) is a hydraulic motor.

9. A CNC grinding machine driving device according to claim 6, characterized in that: It also comprises a sliding seat (116), the mounting seat (101), the second driving member (110) and the working bracket (102) are all mounted on the sliding seat (116), and the sliding seat (116) is slidably connected to the bed.

10. A CNC grinding machine, characterized in that: It comprises a driving device as described in any one of claims 1-9.

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