A CNC surface grinder for shaft machining

Abstract

The present invention relates to the technical field of shaft processing, and specifically relates to a numerically controlled surface grinder for shaft processing, which includes a grinder body, a workbench movably connected to the grinder body, two rotating disks and a grinding wheel installed at both ends of the top of the workbench and used for supporting and rotating a slender shaft. A supporting mechanism for supporting the grinding wheel is installed on the grinder body, and the supporting mechanism supports the grinding wheel. The grinding wheel is used for grinding the slender shaft. In this numerically controlled surface grinder for shaft processing, adjusting the supporting mechanism can not only support the slender shaft, but also, during the process of the rotation and movement of the slender shaft and the grinding in cooperation with the grinding wheel, according to the diameter change of the position where the slender shaft is ground, the multiple second balls at the supporting mechanism can timely adjust the clamping force on the slender shaft, thereby realizing stable support for the slender shaft and preventing the phenomenon of vibration deformation of the slender shaft during the grinding process.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft processing, and particularly to a numerically controlled surface grinder for shaft processing. Background Art

[0002] A surface grinder is a type of grinder that mainly uses a grinding wheel to rotate and grind workpieces to achieve the required flatness. In grinding processing, a surface grinder can process various types of shafts, including but not limited to ordinary shafts, slender shafts, crankshafts, etc. These shafts are usually used in various mechanical equipment, such as the fields of automobiles, aerospace, and precision instruments.

[0003] When the existing slender shaft is ground on a numerically controlled surface grinder, due to the large ratio of length to diameter, the slender shaft has poor self-rigidity. During the cutting process, although the staff uses auxiliary support tools to support the slender shaft at the shaft position, however, the contact force between the grinding wheel and the slender shaft easily causes the slender shaft to vibrate. Especially during the grinding process, the diameter of the grinding position of the slender shaft is gradually decreasing, and the existing auxiliary support tools cannot adjust their support contact force in a timely manner according to the diameter change of the slender shaft. As a result, during the grinding rotation of the slender shaft, the vibration force increases, and further, the phenomenon of bending deformation occurs during the grinding of the slender shaft, making it difficult to guarantee the dimensional accuracy of the slender shaft. Summary of the Invention

[0004] The purpose of the present invention is to provide a numerically controlled surface grinder for shaft processing to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A numerically controlled surface grinder for shaft processing, including a grinder body, a workbench movably connected to the grinder body, two rotating disks and a grinding wheel installed at both ends of the top of the workbench for supporting and rotating a slender shaft. A support mechanism for supporting the grinding wheel is installed on the grinder body, and the support mechanism supports the grinding wheel. The grinding wheel is used for grinding the slender shaft. A support rail is installed on the workbench on the side far from the grinding wheel, and a plurality of moving seats are slidably connected to the support rail. A locking mechanism is installed on the moving seat, and the moving seat is fixed to the support rail through the locking mechanism;

[0006] An adjusting support mechanism is installed on the moving seat. The adjusting support mechanism is used for auxiliary support of the slender shaft and adjusts according to the change of the grinding diameter of the slender shaft.

[0007] Wherein, an internal thread hole is provided on the moving seat on the side far from the grinding wheel. The locking mechanism is connected to the internal thread hole. The locking mechanism includes a locking bolt, and one end of the locking bolt is threadedly connected to the internal thread hole, and one end of the locking bolt abuts against the guide rail.

[0008] Among them, the adjustment and support mechanism includes a support base, a moving mechanism, a support frame, a lifting mechanism and a support detection mechanism. The support base is slidably connected to the upper surface of the moving base. The moving mechanism is located on the moving base and is used to drive the support base.

[0009] The support frame is located above the support base, and the lifting mechanism is installed on the support base. The lifting mechanism is used to adjust the vertical height between the support frame and the support base. By providing the adjustment and support mechanism, the function of adjusting and supporting the slender shaft is realized.

[0010] The support detection mechanism is installed on one side of the support frame and is used to detect the support of the slender shaft.

[0011] Among them, the moving mechanism includes fixed blocks, a moving lead screw and a handle. There are two fixed blocks, and the two fixed blocks are respectively fixedly installed at both ends of the upper surface of the moving base. The moving lead screw is rotatably connected between the two fixed blocks, and one end of the moving lead screw outside one of the fixed blocks is fixedly connected to the handle. The moving lead screw is threadedly connected to the two fixed blocks, and the bottom of the support base is threadedly sleeved outside the moving lead screw. By providing the moving mechanism, the position of the support base relative to the moving base can be adjusted.

[0012] Among them, the lifting mechanism includes a slide bar, a lifting lead screw, a first connecting ear and a second connecting ear. The slide bar is fixedly installed on the support base, and the lifting lead screw is rotatably connected to the support base. The first connecting ear and the second connecting ear are respectively fixedly installed at both ends of the support frame. The first connecting ear is slidably sleeved outside the slide bar, and the second connecting ear is threadedly sleeved outside the lifting lead screw. The bottom outside of the lifting lead screw is provided with anti-slip threads. By providing the lifting mechanism, the function of supporting and connecting the support frame is realized.

[0013] Among them, the support detection mechanism includes an electric push rod, a support sleeve, a detection piece and a positioning piece. The electric push rod is fixedly installed on the support frame, and the output end of the electric push rod passes through the support frame and is fixedly connected to the support sleeve. The output end of the electric push rod is slidably connected to the support frame. A receiving groove is provided on one side of the support sleeve facing the slender shaft. The detection piece is located at the receiving groove and is used to detect the outer surface position of the slender shaft.

[0014] There are two positioning pieces, and the two positioning pieces are respectively located outside the support sleeve and are connected to the support frame. By providing the support detection mechanism, while supporting the slender shaft on the grinding machine body, the function of detecting the slender shaft is realized.

[0015] Among them, the detection piece includes a pressure sensor, a rubber pad, a receiving sleeve and a first ball. The pressure sensor is installed inside the receiving groove, and one side of the receiving sleeve is connected to the pressure sensor through the rubber pad. The receiving sleeve penetrates through one side of the receiving groove. The first ball penetrates through the receiving sleeve, and the first ball is rotatably connected to the receiving sleeve. By providing the detection piece, the function of detecting the outer diameter change of the slender shaft is realized.

[0016] Among them, the positioning piece includes a connecting piece, a pulling plate, a limiting sleeve and a clamping piece. The connecting piece is installed between the pulling plate and the support sleeve. The pulling plate is L-shaped, and the two ends of the pulling plate are respectively a support end and a moving end. The limiting sleeve is slidably sleeved outside the moving end, and the limiting sleeve is fixedly installed on the support frame. The clamping piece is located at the support end. By providing the positioning piece, the function of connecting the support frame is realized.

[0017] Among them, the connecting piece includes a connecting seat, connecting support rods and a connecting shaft. The connecting seat is fixedly installed outside the support sleeve. There are two connecting support rods. One ends of the two connecting support rods are hinged to the connecting seat through pins, and the other ends of the connecting support rods are rotatably connected to the outside of the pulling plate through the connecting shaft. By providing the connecting piece, the function of connecting the support sleeve and the pulling plate to each other is realized.

[0018] Among them, the clamping piece includes a limiting frame, positioning support rods, a swinging shaft, a swinging block, a contact block, a connecting rod, a connecting spring, a connecting sleeve and a second ball. The limiting frame is fixedly installed at the support end of the pulling plate. There are two positioning support rods. One ends of the two positioning support rods are hinged to the limiting frame through pins;

[0019] The swinging block is rotatably sleeved outside the swinging shaft, and both ends of the swinging block are circular ends. The contact block is slidably connected at the circular end. One end of the connecting rod is fixedly connected to the contact block, and the other end of the connecting rod passes through the pulling plate and is fixedly connected to the connecting sleeve. The second ball is rotatably connected to the connecting sleeve, and the second ball contacts the outer surface of the slender shaft.

[0020] The connecting spring is sleeved outside the connecting rod, and both ends of the connecting spring are located between the contact block and the pulling plate. By providing the clamping piece, the function of clamping and positioning the slender shaft is realized.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. When the present invention is in use, through the support guide rails provided on the workbench, and a plurality of moving seats slidably connected to the support guide rails, and at the same time, the adjusting support mechanisms are correspondingly installed on the moving seats. Thus, when the grinding machine body grinds the slender shaft, the adjusting support mechanisms can not only support the slender shaft, but also, during the process of the slender shaft rotating and moving and cooperating with the grinding wheel for grinding, according to the diameter change of the position where the slender shaft is ground, the plurality of second ball bearings at the adjusting support mechanisms can timely adjust the clamping force on the slender shaft, thereby realizing stable support for the slender shaft and preventing the phenomenon of vibration deformation of the slender shaft during grinding.

[0023] 2. When the present invention is in use, the adjusting support mechanisms can not only support the slender shaft during grinding, but also reduce the vibration force generated during the grinding process of the slender shaft, further ensuring stable grinding of the slender shaft and ensuring the dimensional accuracy of the grinding of the slender shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the workbench structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the side view structure of the slender shaft of the present invention;

[0027] Figure 4 It is a schematic diagram of the moving seat structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the support seat structure of the present invention;

[0029] Figure 6 It is a schematic diagram of the lifting lead screw structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the support detection mechanism structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the support sleeve structure of the present invention;

[0032] Figure 9 It is an exploded schematic diagram of the internal parts of the support sleeve of the present invention;

[0033] Figure 10 It is a schematic diagram of the limit frame structure of the present invention;

[0034] Figure 11 It is a schematic diagram of the side view sectional structure of the support frame of the present invention.

[0035] In the figure: 1. Grinding machine body; 2. Workbench; 21. Support guide rail; 22. Moving seat; 3. Slender shaft; 4. Rotating disk; 5. Grinding wheel; 6. Locking mechanism; 61. Locking bolt; 7. Adjusting support mechanism; 71. Support seat; 72. Moving mechanism; 721. Fixed block; 722. Moving lead screw; 723. Handle; 73. Support frame; 74. Lifting mechanism; 741. Slide bar; 742. Lifting lead screw; 743. First connecting ear; 744. Second connecting ear; 8. Support detection mechanism; 81. Electric push rod; 82. Support sleeve; 83. Detection piece; 831. Pressure sensor; 832. Rubber pad; 833. Accommodating sleeve; 834. First ball; 84. Positioning piece; 841. Connecting piece; 8411. Connecting seat; 8412. Connecting support rod; 8413. Connecting shaft; 842. Pulling plate; 843. Limiting sleeve; 9. Clamping piece; 91. Limiting frame; 92. Positioning support rod; 93. Swing shaft; 94. Swing block; 95. Contact block; 96. Connecting rod; 97. Connecting spring; 98. Connecting sleeve; 99. Second ball; 10. Connecting lead screw; 101. Rotating motor; 102. First rotating gear; 103. Second rotating gear; 104. Internal thread sleeve. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1

[0038] Please refer to Figures 1 to 3 , a numerical control surface grinding machine for shaft machining, including a grinding machine body 1, a workbench 2 movably connected to the grinding machine body 1, two rotating disks 4 and a grinding wheel 5 installed at both ends of the top of the workbench 2 and used for supporting and rotating a slender shaft 3. A support mechanism for supporting the grinding wheel 5 is installed on the grinding machine body 1, and the support mechanism supports the grinding wheel 5. The grinding wheel 5 is used for grinding the slender shaft 3. The support mechanism is an existing mechanism for supporting the grinding wheel 5 and can adjust the position of the grinding wheel 5 relative to the workbench 2 at the same time, so that the grinding wheel 5 rotates and grinds the slender shaft 3. Therefore, no more details will be described. A support guide rail 21 is installed on one side of the workbench 2 and far from the grinding wheel 5, and a plurality of moving seats 22 are slidably connected to the support guide rail 21. A locking mechanism 6 is installed on the moving seat 22, and the moving seat 22 is fixed to the support guide rail 21 through the locking mechanism 6;

[0039] Please refer to Figures 5 to 6, on the side of the moving seat 22 away from the grinding wheel 5, there is an internal thread hole, and the locking mechanism 6 is connected to the internal thread hole. The locking mechanism 6 includes a locking bolt 61, and one end of the locking bolt 61 is threadedly connected to the internal thread hole, and one end of the locking bolt 61 abuts against the guide rail;

[0040] Specific implementation process: When moving the moving seat 22 relative to the support guide rail 21, by loosening the locking bolt 61, the moving seat 22 can be moved to the position on the workbench 2 where the slender shaft 3 needs to be supported. And when the position is adjusted, the locking bolt 61 can be tightened to fix the moving seat 22 relative to the support guide rail 21 and prevent the moving seat 22 from moving.

[0041] Please refer to Figures 4 to 10 , an adjustment support mechanism 7 is installed on the moving seat 22. The adjustment support mechanism 7 is used to assist in supporting the slender shaft 3, and the adjustment support mechanism 7 is adjusted according to the change in the grinding diameter of the slender shaft 3. The adjustment support mechanism 7 includes a support seat 71, a moving mechanism 72, a support frame 73, a lifting mechanism 74, and a support detection mechanism 8. The support seat 71 is slidably connected to the upper surface of the moving seat 22. The moving mechanism 72 is located on the moving seat 22, and the moving mechanism 72 is used to drive the support seat 71;

[0042] The support frame 73 is located above the support seat 71, and the lifting mechanism 74 is installed on the support seat 71. The lifting mechanism 74 is used to adjust the vertical height between the support frame 73 and the support seat 71;

[0043] The support detection mechanism 8 is installed on one side of the support frame 73, and the support detection mechanism 8 is used to detect the support of the slender shaft 3.

[0044] Please refer to Figures 5 to 6 , the moving mechanism 72 includes a fixed block 721, a moving lead screw 722, and a handle 723. There are two fixed blocks 721, and the two fixed blocks 721 are respectively fixedly installed at both ends of the upper surface of the moving seat 22. The moving lead screw 722 is rotatably connected between the two fixed blocks 721, and one end of the moving lead screw 722 outside one of the fixed blocks 721 is fixedly connected to the handle 723. The moving lead screw 722 is threadedly connected to the two fixed blocks 721, and the bottom of the support seat 71 is threadedly sleeved outside the moving lead screw 722.

[0045] The lifting mechanism 74 includes a slide bar 741, a lifting lead screw 742, a first connecting ear 743 and a second connecting ear 744. The slide bar 741 is fixedly installed on the support base 71, and the lifting lead screw 742 is rotatably connected to the support base 71. The first connecting ear 743 and the second connecting ear 744 are respectively fixedly installed at both ends of the support frame 73. The first connecting ear 743 is slidably sleeved outside the slide bar 741, and the second connecting ear 744 is threadedly sleeved outside the lifting lead screw 742. Anti-slip threads are provided on the outer side of the bottom of the lifting lead screw 742.

[0046] Specific implementation process: First, adjust the position of the support frame 73 relative to the slender shaft 3 so that the support detection mechanism 8 can stably assist in clamping the slender shaft 3. Then, by rotating the handle 723, the moving lead screw 722 can be rotated. When the moving lead screw 722 rotates, a driving force is provided to the support base 71, causing the support base 71 to move relative to the moving seat 22, further adjusting the distance between the support frame 73 and the slender shaft 3. At the same time, when it is necessary to adjust the height of the support frame 73, rotate the lifting lead screw 742, and at the same time, the finger contacts the anti-slip threads at the bottom of the lifting lead screw 742 to drive the lifting lead screw 742. When the lifting lead screw 742 rotates, a driving force is further provided to the second connecting ear 744. Due to the limiting effect of the first connecting ear 743 and the slide bar 741 on the support frame 73, the support frame 73 further moves along the vertical direction until the support frame 73 is adjusted to the required height, so that the support and detection mechanism can be located outside the slender shaft 3.

[0047] Please refer to Figures 7 to 10 , the support detection mechanism 8 includes an electric push rod 81, a support sleeve 82, a detection member 83 and a positioning member 84. The electric push rod 81 is fixedly installed on the support frame 73, and the output end of the electric push rod 81 passes through the support frame 73 and is fixedly connected to the support sleeve 82. The output end of the electric push rod 81 is slidably connected to the support frame 73. A receiving groove is provided on one side of the support sleeve 82 facing the slender shaft 3. The detection member 83 is located at the receiving groove, and the detection member 83 is used to detect the outer surface position of the slender shaft 3;

[0048] The detection member 83 includes a pressure sensor 831, a rubber pad 832, a receiving sleeve 833 and a first ball 834. The pressure sensor 831 is installed inside the receiving groove, and one side of the receiving sleeve 833 is connected to the pressure sensor 831 through the rubber pad 832. The receiving sleeve 833 penetrates one side of the receiving groove. The first ball 834 penetrates through the receiving sleeve 833, and the first ball 834 is rotatably connected to the receiving sleeve 833;

[0049] In this embodiment, an outer edge is provided at one end of the receiving sleeve 833 located outside the receiving groove, so as to play a role in limiting the receiving sleeve 833. At the same time, the rubber pad 832 can be deformed, and the rubber pad 832 is used to connect the receiving sleeve 833 and the pressure sensor 831;

[0050] Specific implementation process: When the slender shaft 3 is ground on a surface grinder, the first ball 834 contacts the outside of the slender shaft 3. At this time, the pressure sensor 831 detects that its pressure value is the set value, and at the same time, the rubber pad 832 is relatively in a compressed state. During the grinding process of the slender shaft 3 by the grinding wheel 5, the diameter of the slender shaft 3 is reduced. Then, under the connection action of the rubber pad 832, the first ball 834 moves along the direction of the slender shaft 3 through the receiving sleeve 833. At this time, the pressure sensor 831 detects that the pressure value it receives becomes smaller. Then, the electric push rod 81 operates, and the output end of the electric push rod 81 drives the support sleeve 82 to move along the direction of the slender shaft 3 until the first ball 834 contacts the outside of the slender shaft 3 and can rotate relative to the slender shaft 3, and the pressure sensor 831 detects that the pressure value is the set value, then the electric push rod 81 stops operating. When the diameter of the slender shaft 3 continues to decrease, this embodiment can continuously detect and assist in supporting the slender shaft 3.

[0051] Please refer to Figures 7 to 8 , there are two positioning members 84, and the two positioning members 84 are respectively located outside the support sleeve 82, and the two positioning members 84 are connected to the support frame 73.

[0052] The positioning member 84 includes a connecting member 841, a pulling plate 842, a limiting sleeve 843 and a clamping member 9. The connecting member 841 is installed between the pulling plate 842 and the support sleeve 82. The pulling plate 842 is L-shaped, and the two ends of the pulling plate 842 are respectively a supporting end and a moving end. The limiting sleeve 843 is slidably sleeved outside the moving end, and the limiting sleeve 843 is fixedly installed on the support frame 73. The clamping member 9 is located at the supporting end.

[0053] The connecting member 841 includes a connecting seat 8411, a connecting support rod 8412 and a connecting shaft 8413. The connecting seat 8411 is fixedly installed outside the support sleeve 82. There are two connecting support rods 8412. One ends of the two connecting support rods 8412 are hinged to the connecting seat 8411 through pins, and the other ends of the connecting support rods 8412 are rotatably connected to the outside of the pulling plate 842 through the connecting shaft 8413.

[0054] The clamping member 9 includes a limit frame 91, a positioning support rod 92, a swing shaft 93, a swing block 94, a contact block 95, a connecting rod 96, a connecting spring 97, a connecting sleeve 98 and a second ball 99. The limit frame 91 is fixedly installed at the support end of the pulling plate 842. There are two positioning support rods 92. In this embodiment, the positioning support rod 92 is in an L shape. One ends of the two positioning support rods 92 are hinged to the limit frame 91 through a pin shaft, and the swing shaft 93 is fixedly connected to one ends of the two positioning support rods 92;

[0055] The swing block 94 is rotatably sleeved outside the swing shaft 93, and both ends of the swing block 94 are circular ends. The contact block 95 is slidably connected at the circular ends. One end of the connecting rod 96 is fixedly connected to the contact block 95, and the other end of the connecting rod 96 passes through the pulling plate 842 and is fixedly connected to the connecting sleeve 98. The second ball 99 is rotatably connected to the connecting sleeve 98, and the second ball 99 contacts the outer surface of the slender shaft 3.

[0056] The connecting spring 97 is sleeved outside the connecting rod 96, and both ends of the connecting spring 97 are located between the contact block 95 and the pulling plate 842.

[0057] Specific implementation process: When the electric push rod 81 operates and drives the support sleeve 82 to move along the direction of the slender shaft 3, the support sleeve 82 synchronously drives the connecting support rod 8412 to move through the two connecting seats 8411 on its outer side. And since the other end of the connecting support rod 8412 is limited by the pulling plate 842, the connecting support rod 8412 further drives the pulling rod to move, and then the two pulling plates 842 move along the opposite directions, that is, the support end of the pulling plate 842 slides relative to the limit sleeve 843;

[0058] While the two pulling plates 842 are moving along the direction of the slender shaft 3, the second balls 99 at the connecting rod 96 on the pulling plate 842 move relative to the direction of the slender shaft 3 until the four second balls 99 clamp and support the slender shaft 3. At the same time, the slender shaft 3 can rotate relative to the four second balls 99. Thus, the four second balls 99 play a role in supporting and limiting the slender shaft 3 with a certain force;

[0059] At the same time, when the slender shaft 3 vibrates due to the grinding of the grinding wheel 5 and the rotation of the slender shaft 3 relative to the grinding wheel 5, at the multiple second balls 99 in contact with the slender shaft 3, due to the connection of the connecting sleeve 98 outside the second ball 99 under the connection of the connecting rod 96, the connecting spring 97 and the contact block 95, the vibration of the slender shaft 3 causes the second ball 99 and the connecting rod 96 to move a certain amplitude relative to the mobile end of the elongated plate, and then the connecting spring 97 undergoes elastic deformation. In this process, it plays a role in buffering and eliminating the vibration force of the slender shaft 3, thereby reducing the vibration force of the slender shaft 3 and ensuring the stability of the slender shaft 3 at the same time;

[0060] In this embodiment, due to the limiting effect of the contact block 95 on the positioning support rod 92, the swing shaft 93, and the swing block 94, multiple second balls 99 independently support the slender shaft 3, further ensuring the stability of the grinding of the slender shaft 3.

[0061] Embodiment 2

[0062] Please refer to Figure 11 , Embodiment 2 is another implementation method for connecting the support sleeve 82 in Embodiment 1. Specifically, in this second embodiment, the connecting screw rod 10 is used to connect the support sleeve 82. The connecting screw rod 10 passes through the support frame 73. An internal thread sleeve 104 is rotatably connected to the support frame 73. A rotary motor 101 is installed on the support frame 73. The output end of the rotary motor 101 is fixedly connected to a first rotating gear 102. A second rotating gear 103 is meshed outside the first rotating gear 102, and the second rotating gear 103 is fixedly sleeved outside the internal thread sleeve 104;

[0063] Furthermore, when the pressure sensor 831 detects a change in its pressure value, at this time, the rotary motor 101 operates, so that the first rotating gear 102 drives the second rotating gear 103 to rotate. When the second rotating gear 103 rotates, the internal thread sleeve 104 rotates relative to the connecting screw rod 10. Due to the limiting effect of the connecting screw rod 10 on the support sleeve 82, the support sleeve 82 is further driven to move along the direction of the slender shaft 3 or along the direction away from the slender shaft 3 until the model value of the pressure sensor 831 reaches the set value, and then the rotary motor 101 stops operating.

[0064] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0065] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC surface grinder for shaft processing, comprising a grinder body (1), a worktable (2) movably connected to the grinder body (1), two rotating disks (4) and a grinding wheel (5) mounted at both ends of the top of the worktable (2) and used to support and rotate a slender shaft (3), wherein a supporting mechanism for supporting the grinding wheel (5) is mounted on the grinder body (1), and the supporting mechanism supports the grinding wheel (5), and the grinding wheel (5) is used to grind the slender shaft (3), characterized in that: A support rail (21) is installed on the side of the workbench (2) away from the grinding wheel (5), and a plurality of movable seats (22) are slidably connected to the support rail (21), a locking mechanism (6) is installed on the movable seats (22), and the movable seats (22) are fixed to the support rail (21) via the locking mechanism (6); An adjusting support mechanism (7) is installed on the movable seat (22), and the adjusting support mechanism (7) is used to provide auxiliary support for the slender shaft (3), and the adjusting support mechanism (7) is adjusted according to the change of the grinding diameter of the slender shaft (3); The adjusting support mechanism (7) comprises a support seat (71), a moving mechanism (72), a support frame (73), a lifting mechanism (74) and a support detection mechanism (8); the support seat (71) is slidably connected to the upper surface of the moving seat (22); the moving mechanism (72) is located on the moving seat (22); and the moving mechanism (72) is used to drive the support seat (71); The support frame (73) is located above the support seat (71), and the lifting mechanism (74) is installed on the support seat (71), and the lifting mechanism (74) is used to adjust the vertical height of the support frame (73) relative to the support seat (71); The support detection mechanism (8) is installed on one side of the support frame (73), and the support detection mechanism (8) is used to perform support detection on the slender shaft (3); The support detection mechanism (8) comprises an electric push rod (81), a support sleeve (82), a detection member (83) and a positioning member (84); the electric push rod (81) is fixedly mounted on the support frame (73); the output end of the electric push rod (81) passes through the support frame (73) and is fixedly connected to the support sleeve (82); the output end of the electric push rod (81) is slidably connected to the support frame (73); a receiving groove is provided on a side of the support sleeve (82) facing the slender shaft (3); the detection member (83) is located at the receiving groove; and the detection member (83) is used to detect the position of the outer surface of the slender shaft (3); There are two positioning members (84), the two positioning members (84) are respectively located outside the supporting sleeve (82), and the two positioning members (84) are connected to the supporting frame (73); The detection member (83) comprises a pressure sensor (831), a rubber pad (832), a receiving sleeve (833) and a first rolling ball (834); the pressure sensor (831) is installed inside the receiving groove, and one side of the receiving sleeve (833) is connected to the pressure sensor (831) via the rubber pad (832); the receiving sleeve (833) passes through one side of the receiving groove; the first rolling ball (834) passes through the receiving sleeve (833), and the first rolling ball (834) is rotatably connected to the receiving sleeve (833); The positioning member (84) comprises a connecting member (841), a pulling plate (842), a limiting sleeve (843) and a clamping member (9); the connecting member (841) is installed between the pulling plate (842) and the supporting sleeve (82); the pulling plate (842) is L-shaped, and the two ends of the pulling plate (842) are respectively a supporting end and a moving end; the limiting sleeve (843) is slidably sleeved on the outside of the moving end, and the limiting sleeve (843) is fixedly installed on the supporting frame (73); and the clamping member (9) is located at the supporting end; The connecting member (841) comprises a connecting seat (8411), a connecting rod (8412) and a connecting shaft (8413); the connecting seat (8411) is fixedly mounted on the outside of the supporting sleeve (82); two connecting rods (8412) are provided; one end of each of the two connecting rods (8412) is hinged to the connecting seat (8411) via a pin, and the other end of the connecting rod (8412) is rotatably connected to the outside of the pulling plate (842) via the connecting shaft (8413); The clamping member (9) comprises a limit frame (91), a positioning support rod (92), a swing shaft (93), a swing block (94), a contact block (95), a connecting rod (96), a connecting spring (97), a connecting sleeve (98) and a second ball (99); the limit frame (91) is fixedly installed at the supporting end of the pulling plate (842); two positioning support rods (92) are provided; one end of the two positioning support rods (92) is hinged to the limit frame (91) through a pin shaft; and the swing shaft (93) is fixedly connected to one end of the two positioning support rods (92); The swing block (94) is rotatably sleeved on the outside of the swing shaft (93), and both ends of the swing block (94) are circular ends. The contact block (95) is slidably connected to the circular end. One end of the connecting rod (96) is fixedly connected to the contact block (95), and the other end of the connecting rod (96) passes through the pulling plate (842) and is fixedly connected to the connecting sleeve (98). The second ball (99) is rotatably connected to the connecting sleeve (98), and the second ball (99) contacts the outer surface of the slender shaft (3). The connecting spring (97) is sleeved on the outside of the connecting rod (96), and the two ends of the connecting spring (97) are located between the contact block (95) and the pulling plate (842).

2. The CNC surface grinder for shaft processing according to claim 1, characterized in that: An internal threaded hole is provided on the movable seat (22) at a side away from the grinding wheel (5), the locking mechanism (6) is connected to the internal threaded hole, the locking mechanism (6) comprises a locking bolt (61), one end of the locking bolt (61) is threadedly connected to the internal threaded hole, and one end of the locking bolt (61) abuts against the guide rail.

3. The CNC surface grinder for shaft processing according to claim 1, characterized in that: The moving mechanism (72) comprises a fixed block (721), a moving screw rod (722) and a handle (723). Two fixed blocks (721) are provided. The two fixed blocks (721) are respectively fixedly mounted on two ends of the upper surface of the moving seat (22). The moving screw rod (722) is rotatably connected between the two fixed blocks (721), and one end of the moving screw rod (722) located on the outside of one of the fixed blocks (721) is fixedly connected to the handle (723). The moving screw rod (722) is threadedly connected to the two fixed blocks (721), and the bottom of the support seat (71) is threadedly sleeved on the outside of the moving screw rod (722).

4. The CNC surface grinder for shaft processing according to claim 1, characterized in that: The lifting mechanism (74) comprises a sliding rod (741), a lifting screw rod (742), a first connecting ear (743) and a second connecting ear (744); the sliding rod (741) is fixedly mounted on the support seat (71), and the lifting screw rod (742) is rotatably connected to the support seat (71); the first connecting ear (743) and the second connecting ear (744) are respectively fixedly mounted on two ends of the support frame (73); the first connecting ear (743) is slidably sleeved on the outside of the sliding rod (741), and the second connecting ear (744) is threadedly sleeved on the outside of the lifting screw rod (742); and the outside of the bottom of the lifting screw rod (742) is provided with anti-slip grooves.

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