A grinding machine

Abstract

The present application relates to a grinder, belonging to the field of machining technology. It includes a workbench and a placement component installed on the workbench, a grinding frame and an electric grinder installed on the grinding frame. The grinding frame is slidably installed on the workbench, and the grinding frame is located on one side of the placement component. An elastic component is also provided on the workbench, and the elastic component drives the grinding frame to slide toward the placement component. The placement component includes a workpiece clamping module composed of a lower base and an upper base respectively arranged up and down, a rotating drive member driving the workpiece clamping module to rotate, and a moving drive member driving the upper base and the lower base to approach each other; there are at least two types of workpiece clamping modules, one of which has a lower base protruding with a placement column and a positioning column, and the placement column is consistent with the rotation center of the lower base, and the upper base of the other workpiece clamping module is provided with an embedding groove adapted to the outer wall of the workpiece. The grinder of the present application can adapt to and stably grind the surfaces of various workpieces.

Description

Technical Field

[0001] The present application relates to the field of machining, and in particular to a grinding machine. Background Art

[0002] Grinding is an important step in the manufacturing process of metal parts. Grinding can remove burrs and other burrs on the surface of metal parts, making the surface of metal parts smoother and preparing for the next step of polishing.

[0003] The edges of existing workpieces are usually ground using a grinder, such as Figure 1 As shown, it includes a placement table 10 and an electric grinder 8. The electric grinder 8 is located under the placement table 10. The electric grinding head of the electric grinder 8 is exposed and extended in the middle of the placement table 10. When grinding, the workpiece is placed on the placement table 10, and then the workpiece is pushed to abut against the electric grinding head, and then the workpiece is moved for grinding.

[0004] The grinding effect of the above-mentioned grinding method is unstable, which mainly depends on the magnitude of the force applied during grinding, resulting in differences in the grinding effect of each workpiece surface. Summary of the invention

[0005] In order to stably grind the outer walls of various workpieces, the present application provides a grinder.

[0006] The present application provides a grinding machine adopting the following technical solution:

[0007] A grinder, comprising a workbench and a placement assembly mounted on the workbench, a grinding frame and an electric grinder mounted on the grinding frame, wherein the grinding frame is slidably mounted on the workbench, the grinding frame is located on one side of the placement assembly, an elastic assembly is further arranged on the workbench, the elastic assembly drives the grinding frame to slide toward the placement assembly, the placement assembly comprises a workpiece clamping module composed of a lower base and an upper base respectively arranged up and down, a rotating driving member driving the workpiece clamping module to rotate, and a moving driving member driving the upper base and the lower base to approach each other;

[0008] There are at least two types of workpiece clamping modules. One type of workpiece clamping module is set as a hole workpiece clamping module. The lower base of the hole workpiece clamping module is protrudingly provided with a placement column and a positioning column, and the placement column is consistent with the rotation center of the lower base. The other type of workpiece clamping module is set as an external workpiece clamping module. The upper base of the external workpiece clamping module is provided with an embedding groove adapted to the outer wall of the workpiece.

[0009] By adopting the above technical scheme, two types of workpieces are corresponded to two major categories of workpieces. For workpieces with holes, the workpiece can be clamped by the hole workpiece clamping module, and for workpieces without holes, the workpiece can be clamped by the external workpiece clamping module. In special cases, such as when the workpiece has only one hole and it is a circular hole, it is also necessary to adopt the external workpiece clamping module. The linkage between the workpiece and the workpiece clamping module is realized through the embedding groove provided on the upper base. For a single hole but the hole is not a circular hole, the linkage between the workpiece and the workpiece clamping module can be realized by matching the hole on the workpiece with the placement column, and the multi-porous workpiece can be inserted into a hole by the placement column and the positioning column respectively, so as to realize the linkage between the workpiece and the workpiece clamping module, and then the workpiece clamping module is driven by the rotating drive member to rotate with the workpiece, and then the grinding frame drives the electric grinder to grind the workpiece, wherein the setting of the elastic component enables the grinding frame to continuously fluctuate and slide according to the shape of the workpiece to keep the grinding head of the electric grinder in contact with the workpiece.

[0010] Optionally, the lower base includes a fixed portion and a quick-release portion, the fixed portion is mounted on the rotating drive member, the fixed portion is protrudingly provided with a plug post, the quick-release portion is provided with a socket for inserting the plug post, the axis of the plug post is the rotation center of the lower base, the fixed portion is also protrudingly provided with a connecting column, the quick-release portion is provided with a connecting hole for inserting the connecting column, there are multiple connecting columns, and the multiple connecting columns are evenly arranged around the plug post, an installation positioning protrusion is suspended from the outer wall of the top of the plug post, and the hole wall is provided with a An installation positioning groove for the installation positioning protrusion to slide into, the installation positioning groove has three sections, which are respectively arranged as the first section, the second section and the third section, wherein the first section and the third section are vertically opened and spaced at a certain angle around the insertion column, the second section is opened around the insertion hole and connects the vertically opened first section and the third section, when the installation positioning protrusion is located in the second section of the installation positioning groove, the connecting column abuts the quick release part, and when the installation positioning protrusion is located in the third section of the installation positioning groove, the connecting column corresponds one-to-one with the connecting hole.

[0011] By adopting the above technical scheme, a detachable connection between the fixed part and the quick-release part is achieved. The quick-release part can be designed according to the workpiece situation, so that the matching hole workpiece clamping module can be quickly replaced according to the different workpieces. During the specific installation, the column part is inserted into the socket. At this time, the installation positioning protrusion is located in the first section of the installation positioning slide groove, and then the quick-release part is rotated to make the connecting column and the connecting hole correspond one by one and plug and fix. Such an arrangement, on the one hand, allows the fixed part to better drive the quick-release part, and on the other hand, the quick-release part cannot be directly removed after being lifted, so that the quick-release part is not easy to detach from the fixed part by itself, thereby ensuring the stability of the connection.

[0012] Optionally, the upper base includes a rotating part and a replacing part, the rotating part is protruding from the side wall of the rotating part away from the movable driving member, the rotating part is vertically provided with at least two receiving grooves, the receiving groove is rotatably connected with a linking piece, the replacing part is provided with a rotating hole for the rotating column to be inserted, the hole wall at the bottom of the rotating hole is provided with a linking groove adapted to the linking piece, the hole wall at the top of the rotating hole is provided with a disengagement groove connected with the linking groove, the groove width of the linking groove is greater than the groove width of the disengagement groove, and the depth of the linking groove is less than the depth of the disengagement groove, the part of the disengagement groove extending into the linkage groove, and the corresponding groove wall of the linkage groove has a protrusion for the disengagement groove to extend, and the bottom of the rotating hole is provided with a gathering groove, the groove wall of the gathering groove pushes the linking piece to move toward the receiving groove and retract inward to reach a state of entering the disengagement groove.

[0013] By adopting the above technical scheme, a detachable connection between the rotating part and the replacement part is achieved. The replacement part can be designed according to the workpiece situation, so that the external workpiece clamping module that is suitable for the workpiece can be quickly replaced according to the different workpieces. During installation, the rotating column is inserted into the rotating hole, and then the rotating part and the replacement part are rotated relatively, so that the connecting piece enters the connecting groove and then turns outward. At this time, due to the gravity of the replacement part, the connecting piece is in an outward turning state and maintains a matching state with the rotating part to achieve the connection between the rotating part and the replacement part. When the rotating part rotates, the replacement part is driven to rotate by the connecting piece. Due to the rotating state, the connecting piece is further turned outward and maintained in the connecting groove, and the connection state between the rotating part and the replacement part is maintained more stably. When disassembly is required, the rotating column is first further inserted into the retracting groove, and then the rotating part and the replacement part are rotated relatively. When the connecting piece corresponds to the disengagement groove, the replacement part is removed downward. At this time, the function of the disengagement groove keeps the connecting piece restricted and does not hinder the rotating column from disengaging. The replacement is convenient and the connection is stable.

[0014] Optionally, the workpiece clamping module also has a type and is configured as a universal workpiece clamping module for holes, wherein the lower base of the universal workpiece clamping module for holes is elastically mounted with limit pins, wherein there are a plurality of limit pins, and the plurality of limit pins are evenly arranged on the surface of the lower base, and the upper surface of the lower base is located within the lower surface of the workpiece.

[0015] By adopting the above technical scheme and setting up the universal workpiece clamping module for holes, it is possible to avoid specially processing corresponding workpiece clamping modules for holes when grinding a small number of special workpieces, and the universal workpiece clamping module for holes can be used to clamp the suitable workpieces when temporarily processing workpieces, wherein the limit pins are elastically installed, and when the workpiece is placed, the limit pins are inserted into the holes on the workpieces, and the position of the workpiece without holes squeezes the limit pins back, thereby completing the rotational connection between the lower base and the workpiece.

[0016] Optionally, the workpiece clamping module also has a type and is configured as an external universal workpiece clamping module, wherein the upper base of the external universal workpiece clamping module is elastically mounted with limit pins, wherein there are a plurality of limit pins, and the plurality of limit pins are evenly arranged on the lower surface of the upper base, and the lower surface of the upper base is larger than the upper surface of the workpiece, so that the projection of the workpiece is located as a whole within the lower surface of the upper base.

[0017] By adopting the above technical solution and setting up the external universal workpiece clamping module, it is possible to avoid specially processing the corresponding external workpiece clamping module when grinding a small number of special workpieces, and the external universal workpiece clamping module can also be used to clamp the adapted workpiece when temporarily processing the workpiece, wherein the elastically installed limit pin, when the workpiece is placed, the workpiece squeezes the limit pin to retract, and the limit pin on the outer ring of the workpiece surrounds the workpiece, thereby completing the rotational connection between the lower base and the workpiece.

[0018] Optionally, the elastic component includes a constant-pressure air pump, a pump cylinder, a driving rod, a one-way constant-pressure valve and an elastic reset member. The constant-pressure air pump constantly draws air from the pump cylinder. The one-way constant-pressure valve is installed at a port of the pump cylinder connected to the outside world. The driving rod is slidably installed on the pump cylinder and connected to the grinding frame. One end of the elastic reset member is connected to the grinding frame to pull the grinding frame away from the workpiece clamping module for reset.

[0019] By adopting the above technical solution, air is pumped from the pump cylinder by a constant-pressure vacuum pump, so that the driving rod retracts, and the driving rod drives the grinding frame to move toward the workpiece to grind the workpiece. Since the movement of the driving rod is mainly driven by the negative pressure in the pump cylinder, when the grinding frame is subjected to a reaction force, the driving rod can be driven and pulled out of the pump cylinder. The presence of the one-way constant-pressure valve keeps the negative pressure in the pump cylinder within a certain range, and the pulling force on the driving rod is kept as stable as possible, thereby ensuring that the grinding effect of the electric grinder on the workpiece is kept as stable as possible. The setting of the elastic reset part ensures that when the constant-pressure vacuum pump is not pumping air, the grinding frame will return to its original position under the pull of the elastic reset part.

[0020] Optionally, there are two placement assemblies, which are arranged side by side, and there are two corresponding grinding racks, which are arranged on both sides of the area where the two placement assemblies are located, and both ends of the elastic reset member are connected to the two grinding racks one by one.

[0021] By adopting the above technical solution, two mounting components are used, so that two workpieces can be polished at the same time, and the elastic reset member can act on the two polishing frames at the same time, which streamlines the structure and improves the polishing efficiency.

[0022] Optionally, the elastic reset member includes a tension spring and a reset cylinder, the reset cylinder is installed on the workbench, one end of the tension spring is connected to the piston rod of the reset cylinder, and the other end is connected to the grinding frame.

[0023] By adopting the above technical solution, the grinding frame is reset by the reset cylinder, and the presence of the tension spring prevents the reset cylinder and the driving rod on the pump cylinder from interfering with each other. When the grinding frame moves, it will not be restricted by the rigidity of the reset cylinder and can still have the reset function.

[0024] Optionally, the elastic reset member includes a reset block, a pushing cylinder and an elastic member. The reset block is slidably installed on the workbench and is located on the sliding path of the grinding frame. The reset block is provided with a guide surface facing the side wall of the grinding frame. The elastic member pushes the reset block to protrude from the workbench. The pushing cylinder is installed on the workbench to push the reset block to initially reset.

[0025] By adopting the above technical solution, when the driving rod drives the electric grinder on the grinding frame to grind the workpiece, the extrusion pressure between the electric grinder and the workpiece remains the same everywhere, thereby ensuring that the effect of grinding the workpiece is as consistent as possible everywhere, and the resetting function of the grinding frame is realized by the resetting pressure block and the elastic member. When the grinding frame is in the grinding state, the resetting pressure block is located under the grinding frame without affecting the grinding frame. When the grinding is completed, the grinding frame is pushed by pushing the cylinder so that the grinding piece is located at the guide surface position of the resetting pressure block. At this time, the resetting pressure block moves up under the action of the elastic member, and then pushes the grinding frame to reset, so that the resetting and grinding processes are completely separated and will not affect each other.

[0026] Optionally, a baffle is provided on the workbench, and the baffle includes a fixed baffle and a movable baffle, the fixed baffle is fixed to the workbench, the movable baffle is slidably installed on the upper part of the fixed baffle, a pull-down column is provided on the lower side of the movable baffle, the workbench is provided with a pull-down column hole for the sliding installation of the pull-down column, the workbench is provided with a reset pressure block hole for the sliding installation of the reset pressure block, and the reset pressure block hole is connected with the pull-down column hole, and the elastic member is a flexible filler and fills the reset pressure block and the pull-down column hole.

[0027] By adopting the above technical solution, the movable baffle can be moved up during grinding to block and prevent grinding splashes. When grinding is completed, the movable baffle moves down to facilitate the removal and placement of the workpiece. The movement of the movable baffle is linked to the movement of the grinding frame through the reset pressure block, thereby achieving a strong connection between the two processes, and it is not easy for the disconnection to occur. The elastic part also has a double pushing effect, so that blocking and resetting are achieved through two processes of the same component, and the reset process also plays the role of moving the movable baffle down.

[0028] To sum up, two types of workpiece clamping modules are used to correspond to two major categories of workpieces. For workpieces with holes, the workpiece can be clamped by the hole workpiece clamping module, and for workpieces without holes, the workpiece can be clamped by the external workpiece clamping module. In special cases, such as when the workpiece has only one hole and it is a round hole, an external workpiece clamping module is also required. The linkage between the workpiece and the workpiece clamping module is achieved through the embedding groove provided on the upper base. For a single hole but the hole is not a round hole, the linkage between the workpiece and the workpiece clamping module can be achieved by matching the setting column with the hole on the workpiece, and the multi-porous workpiece can be inserted into a hole by the setting column and the positioning column respectively, so as to achieve the linkage between the workpiece and the workpiece clamping module, and then the workpiece clamping module is driven by the rotating drive member to rotate with the workpiece, and then the grinding frame drives the electric grinder to grind the workpiece, wherein the setting of the elastic component enables the grinding frame to continuously fluctuate and slide according to the shape of the workpiece to keep the grinding head of the electric grinder in contact with the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an existing grinding machine;

[0030] Figure 2 It is a structural schematic diagram of a grinder in an embodiment of the present application;

[0031] Figure 3 It is a schematic diagram of the installation structure of the first elastic component in the embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the installation structure of the second elastic component in the embodiment of the present application;

[0033] Figure 5 is a schematic diagram of the installation structure of the fourth elastic component in the embodiment of the present application;

[0034] Figure 6 is a cross-sectional view of the linkage reset structure of the fourth elastic component in the embodiment of the present application;

[0035] Figure 7 It is a structural schematic diagram of the side of the grinder in the embodiment of the present application;

[0036] Figure 8 It is a structural schematic diagram of the grinding machine with the baffle removed in the embodiment of the present application;

[0037] Fig. 9 It is a structural schematic diagram of a hole workpiece clamping module in an embodiment of the present application;

[0038] Fig.10 is a cross-sectional view of the installation structure of the upper base and the mobile driving member in the embodiment of the present application;

[0039] Fig.11This is a schematic diagram of the structure of the external workpiece clamping module in the embodiment of the present application;

[0040] Fig.12 This is a schematic diagram of the structure of the external universal workpiece clamping module in the embodiment of the present application;

[0041] Fig.13 It is a structural schematic diagram of a universal workpiece clamping module for holes in an embodiment of the present application;

[0042] Fig.14 It is a structural schematic diagram of the quick-release part in the embodiment of the present application;

[0043] Fig.15 is a cross-sectional view of the lower base in an embodiment of the present application;

[0044] Fig.16 is a cross-sectional view of the upper base in an embodiment of the present application;

[0045] Fig.17 It is a structural schematic diagram of the replacement part in the embodiment of the present application.

[0046] Explanation of reference numerals: 1. workbench; 11. mounting plate; 12. reset block hole; 13. pull-down column hole; 14. bracket; 141. horizontal plate; 142. vertical plate; 2. placement assembly; 3. lower base; 31. placement column; 32. positioning column; 33. annular protrusion; 34. bearing; 35. mounting cover; 36. fixing part; 361. plug column; 362. connecting column; 37. quick release part; 371. plug hole; 3711. installation positioning slide groove; 372. connecting hole; 38. elastic rubber block; 39. extrusion bolt; 4. upper base; 41. embedded groove; 42. elastic fixing layer; 43. rotating part; 431. rotating column; 4 32. Storage slot; 44. Replacement part; 441. Rotation hole; 442. Linkage slot; 443. Escape slot; 444. Folding slot; 45. Linkage plate; 46. Limit wire sleeve; 51. Rotation drive member; 52. Movable drive member; 6. Elastic component; 61. Pump cylinder; 62. Drive rod; 63. One-way constant pressure valve; 64. Elastic reset member; 65. Compression spring; 661. Reset pressure block; 6611. Guide surface; 662. Push cylinder; 663. Elastic member; 7. Grinding frame; 8. Electric grinder; 9. Baffle; 91. Fixed baffle; 92. Movable baffle; 921. Pull-down column; 10. Placement table; 101. Limit pin. DETAILED DESCRIPTION

[0047] The following is combined with Figure 2-17 This application is described in further detail.

[0048] The embodiment of the present application discloses a grinder.

[0049] Reference Figure 2A grinder includes a workbench 1, a placement component 2 installed on the workbench 1, a grinding frame 7, and an electric grinder 8 installed on the grinding frame 7. The placement component 2 clamps the workpiece and rotates the workpiece, and the grinding frame 7 slides to grind the lower part of the outer wall of the workpiece with the electric grinder 8.

[0050] Reference Figure 2 and Figure 3 A mounting plate 11 is protruded from the surface of the workbench 1, and the surface of the mounting plate 11 is perpendicular to the surface of the workbench 1. The mounting plate 11 extends along the length direction of the workbench 1, and the surface of the workbench 1 is wider on one side of the mounting plate 11 and narrower on the other side. The placement component 2 is arranged on the surface of the workbench 1 on the side with the larger width of the mounting plate 11. In this embodiment, there are two placement components 2, and the two placement components 2 are arranged at intervals along the extension direction of the mounting plate 11. There are also two corresponding grinding racks 7, and the two grinding racks 7 are arranged on both sides of the two placement components 2. The mounting plate 11 is provided with a slide rail for the grinding rack 7 to slide and install, so that the two grinding racks 7 can slide one by one close to the corresponding placement components 2, and the electric grinder 8 installed on the grinding rack 7 is close to the workpiece on the placement component 2 to grind the workpiece.

[0051] In order to drive the grinding frame 7 to slide toward the corresponding placement component 2 when the workpiece needs to be polished, an elastic component 6 is provided on the workbench 1; the elastic component 6 includes a constant-pressure air pump, a pump cylinder 61, a driving rod 62, a one-way constant-pressure valve 63 and an elastic reset member 64. The pump cylinder 61 is screwed to the mounting plate 11 and is located between the two placement components 2. There are two driving rods 62. The two driving rods 62 are slidably installed on the pump cylinder 61 and are cantilevered toward the two placement components 2 in a one-to-one manner. The specific installation method between the driving rod 62 and the pump cylinder 61 is similar to the installation method of the piston rod of the cylinder. The constant-pressure air pump is connected to the pump cylinder 61 to extract air from the pump cylinder 61. The one-way constant-pressure valve 63 is installed on the pump cylinder 61. When the constant-pressure air pump extracts air from the pump cylinder 61 to reach a certain negative pressure, the pump cylinder 61 inhales air from the outside through the one-way constant-pressure valve 63, thereby keeping the negative pressure inside the pump cylinder 61 constant, and the pulling force provided by the driving rod 62 remains constant.

[0052] The elastic reset member 64 is used to drive the grinding frame 7 to move away from the workpiece clamping module and reset.

[0053] In the first embodiment, the elastic reset member 64 is located on the side of the mounting plate 11 away from the grinding frame 7 , both ends of the elastic reset member 64 pass over the mounting plate 11 and are connected to the two grinding frames 7 , and the driving rod 62 is directly connected to the grinding frame 7 .

[0054] Reference Figure 4 In the second embodiment, the elastic return member 64 includes a compression spring 65 , and the compression spring 65 is clamped between the two grinding frames 7 .

[0055] In the third embodiment, the elastic return member 64 is similar to the above-mentioned second embodiment. The elastic return member 64 can also include a tension spring and a return cylinder. There are two return cylinders, and the two return cylinders are installed one by one on the side of the grinding frame 7 away from the cylinder body on the mounting plate 11. One end of the tension spring is connected to the piston rod of the return cylinder, and the other end is connected to the grinding frame 7.

[0056] Reference Figure 5 and Figure 6 In the fourth embodiment, the elastic reset member 64 includes a reset pressure block 661, a pushing cylinder 662 and an elastic member 663. The pushing cylinder 662 adopts a double-headed cylinder. The pushing cylinder 662 is installed on the mounting plate 11 and is located below the cylinder body. The two piston rods of the pushing cylinder 662 are respectively set toward the two grinding frames 7 and are not directly connected to the grinding frames 7. A reset pressure block hole 12 for vertical sliding installation of the reset pressure block 661 is opened on the workbench 1, and the reset pressure block 661 is located on the sliding path of the grinding frame 7. The reset pressure block 661 is provided with a guide surface 6611 toward the side wall of the grinding frame 7. The elastic member 663 is installed in the reset pressure block hole 12 to push the reset pressure block 661 to protrude from the workbench 1, wherein the elastic member 663 can be a spring or a flexible member. The flexible member can be soft silicone, or it can be a soft silicone wrapped gas or liquid.

[0057] Reference Figure 7 A baffle 9 is provided on the workbench 1, and the baffle 9 includes a fixed baffle 91 and a movable baffle 92. The fixed baffle 91 is fixed to the workbench 1, and the movable baffle 92 is slidably installed on the upper part of the fixed baffle 91. In one embodiment, the movable baffle 92 is pushed by a cylinder to slide on the fixed baffle 91 to repeatedly protrude from the fixed baffle 91.

[0058] Reference Figure 5 and Figure 6 In another embodiment, corresponding to the fourth embodiment of the elastic reset member 64, and the elastic member 663 adopts the method of wrapping water with soft silicone, the lower side of the movable baffle 92 is integrally provided with a pull-down column 921 protruding toward each other, the workbench 1 is provided with a pull-down column hole 13 for the sliding installation of the pull-down column 921, and the reset pressure block hole 12 is connected with the pull-down column hole 13, and the elastic member 663 fills the reset pressure block 661 and the pull-down column hole 13, wherein since the movable baffle 92 is only slidably installed on the upper part, the fixed baffle 91 is provided with a cantilevered protrusion to support the pull-down column 921, which plays a limiting role, so that the gravity of the pull-down column 921 can be larger, but it will not over-squeeze the elastic member 663, and at the same time can speed up the reset process, solving the problem of slow reset of the linkage structure instead of the cylinder.

[0059] Reference Figure 8The placement assembly 2 includes a workpiece clamping module consisting of a lower base 3 and an upper base 4, a rotating drive member 51 for driving the workpiece clamping module to rotate, and a moving drive member 52 for driving the upper base 4 and the lower base 3 to approach each other; wherein the rotating drive member 51 adopts a motor, and the moving drive member 52 adopts a cylinder, a bracket 14 is fixed on the mounting plate 11, the bracket 14 includes a horizontal plate 141 and a vertical plate 142, the vertical plate 142 is fixed to the mounting plate 11 by screws, the horizontal plate 141 and the vertical plate 142 are fixed as a whole and are cantilevered above the upper base 4.

[0060] In this embodiment, there are four types of workpiece clamping modules.

[0061] Reference Fig. 9 The first workpiece clamping module is set as a hole workpiece clamping module. The lower base 3 of the hole workpiece clamping module is protrudingly provided with a placement column 31 and a positioning column 32. The placement column 31 is consistent with the rotation center of the lower base 3. When the hole workpiece clamping module is used, the mobile driving member 52 and the rotating driving member 51 are respectively arranged up and down. The mobile driving member 52 is fixed on the horizontal plate 141, and the rotating driving member 51 is fixed on the workbench 1. The lower base 3 is fixed on the driving shaft of the rotating driving member 51 and rotates under the drive of the rotating driving member 51. The upper base 4 is rotatably installed on the piston rod of the mobile driving member 52.

[0062] Reference Fig.10 The specific rotation connection method is that the mobile driving member 52 is screwed to one end of the horizontal plate 141 and the piston rod slides through the horizontal plate 141 for installation of the lower base 3. The axis of the piston rod of the mobile driving member 52 is consistent with the rotation axis of the rotation driving member 51. An annular protrusion 33 is integrally protruded on the lower base 3 and a coaxial bearing 34 hole is opened in the annular protrusion 33. The bearing 34 hole is embedded with a bearing 34, and the inner diameter of the annular protrusion 33 is consistent with the aperture of the bearing 34 hole. A mounting cover 35 for limiting the separation of the bearing 34 is threadedly sleeved on the annular protrusion 33. The piston rod of the mobile driving member 52 is interference-fitted into the inner ring of the bearing 34. The mounting cover 35 is provided with a hole for the piston rod of the mobile driving member 52 to pass through, thereby realizing the rotation connection between the lower base 3 and the piston rod of the mobile driving member 52.

[0063] Reference Fig.11The second workpiece clamping module is set as an external workpiece clamping module. The upper base 4 of the external workpiece clamping module is provided with a groove 41 adapted to the outer wall of the workpiece on the side wall facing the lower base 3. The groove wall of the groove 41 is glued and fixed with an elastic fixing layer 42. When the external workpiece clamping module is used, the rotating drive member 51 and the moving drive member 52 are respectively arranged up and down. The rotating drive member 51 is fixed on the horizontal plate 141, and the moving drive member 52 is fixed on the workbench 1. The upper base 4 is fixed on the driving shaft of the rotating drive member 51 and rotates under the drive of the rotating drive member 51. The lower base 3 is rotatably installed on the piston rod of the moving drive member 52. The specific rotational connection method is the same as the installation method of the moving drive member 52 and the upper base 4 in the hole work clamping module.

[0064] Reference Fig.12 The third workpiece clamping module is set as an external universal workpiece clamping module. The upper base 4 of the external universal workpiece clamping module is elastically installed with a limit pin 101. There are multiple limit pins 101. The multiple limit pins 101 are evenly arranged on the lower surface of the upper base 4, and the lower surface of the upper base 4 is larger than the upper surface of the workpiece, so that the projection of the workpiece is located as a whole within the lower surface of the upper base 4. At this time, the arrangement of the rotating drive member 51 and the moving drive member 52 is consistent with the external workpiece clamping module.

[0065] Reference Fig.13 The fourth workpiece clamping module is set as a universal workpiece clamping module for holes. The lower base 3 of the universal workpiece clamping module for holes is elastically installed with a limit pin 101. There are multiple limit pins 101, and the multiple limit pins 101 are evenly arranged on the surface of the lower base 3, and the upper surface of the lower base 3 is located inside the lower surface of the workpiece. At this time, the arrangement of the rotating drive member 51 and the moving drive member 52 is consistent with the hole workpiece clamping module.

[0066] The above-mentioned installation method of the limit pin 101 can use soft rubber to directly fill the hole where the limit pin 101 is installed, so as to elastically drive the limit pin 101.

[0067] At the same time, in order to quickly replace different upper bases 4 and lower bases 3, the upper base 4 and the lower base 3 are composed of two parts.

[0068] Reference Fig.14 and Fig.15The lower base 3 includes a fixed portion 36 and a quick-release portion 37. The fixed portion 36 is directly mounted on the rotating drive member 51. The fixed portion 36 is protrudingly provided with a plug column 361. The quick-release portion 37 is provided with a socket 371 for inserting the plug column 361. The axis of the plug column 361 is the rotation center of the lower base 3. The fixed portion 36 is also protrudingly provided with a connecting column 362. The quick-release portion 37 is provided with a connecting hole 372 for inserting the connecting column 362. There are multiple connecting columns 362, and the multiple connecting columns 362 are evenly arranged around the plug column 361. The top outer wall of the plug column 361 is overhanging with an installation positioning protrusion. The socket 37 The hole wall is provided with an installation positioning groove 3711 for the installation positioning protrusion to slide into, and the installation positioning groove 3711 has three sections, which are sequentially set as the first section, the second section and the third section, wherein the first section and the third section are vertically opened and spaced at a certain angle around the plug column 361, and the second section is opened around the plug hole 371 and connects the vertically opened first section and the third section, when the installation positioning protrusion is located at the second section of the installation positioning groove 3711, the connecting column 362 abuts against the quick release part 37, and when the installation positioning protrusion is located at the third section of the installation positioning groove 3711, the connecting column 362 corresponds to the connecting hole 372 one by one.

[0069] An elastic rubber block 38 is provided in the connecting hole 372, and the end of the connecting column 362 is a truncated cone. The elastic rubber block 38 is compressed to fill the gap for fixing, and then an extrusion bolt 39 is driven into the upper end surface of the quick-release column. By removing the extrusion bolt 39, it is convenient to remove the quick-release part 37 and also convenient to install the elastic rubber block 38. The aperture of the bolt hole into which the extrusion bolt 39 is driven is larger than the aperture of the connecting hole 372. It is cold installed during installation. When in use, the ambient temperature rises, and the elastic rubber block 38 expands due to heat, making it more difficult to detach.

[0070] Reference Fig.16 and Fig.17The upper base 4 includes a rotating part 43 and a replacement part 44. The rotating part 43 is provided with a rotating column 431 protruding from the side wall of the rotating part 43 away from the mobile driving member 52. At least two receiving grooves 432 are vertically opened on the rotating column 431. A connecting piece 45 is rotatably connected in the receiving groove 432. The specific installation method is that the receiving groove 432 is provided with a circle of annular grooves, and a notch is opened at the end of the connecting piece 45. The annular groove and the notch are connected to form a complete circular ring and a limited position wire sleeve 46 is embedded. The replacement part 44 is provided with a rotating hole 441 for the rotating column 431 to be inserted. The hole wall at the bottom of the rotating hole 441 is provided with a connecting groove 442 adapted to the connecting piece 45, and the hole wall at the top of the rotating hole 441 is provided with a connecting groove 442 adapted to the connecting groove 442. The connected escape groove 443, the groove width of the linkage groove 442 is larger than the groove width of the escape groove 443, and the radial depth of the linkage groove 442 along the rotating hole 441 is smaller than the radial depth of the escape groove 443 along the rotating hole 441, the escape groove 443 extends toward the linkage groove 442, and the groove wall of the corresponding linkage groove 442 has a protrusion for the escape groove 443 to extend, and the bottom of the rotating hole 441 is provided with a gathering groove 444, and the groove wall of the gathering groove 444 pushes the linkage piece 45 to move toward the receiving groove 432 and retract to reach the state of entering the escape groove 443, and the corresponding rotating part 43 and the replacement part 44 need to have a certain distance between them under normal conditions to facilitate the further insertion of the rotating column 431 into the gathering groove 444.

[0071] The implementation principle of a grinder in an embodiment of the present application is as follows: according to the condition of the workpiece, an appropriate workpiece clamping module is selected, and then the workpiece clamping module is driven to rotate with the workpiece by a rotating driving member 51, and then the grinding frame 7 drives the electric grinder 8 to grind the workpiece, wherein the setting of the elastic component 6 allows the grinding frame 7 to continuously fluctuate and slide according to the shape of the workpiece, so as to keep the grinding head of the electric grinder 8 in contact with the workpiece.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A grinding machine, characterized in that: The invention comprises a workbench (1), a placement component (2) mounted on the workbench (1), a grinding frame (7), and an electric grinding machine (8) mounted on the grinding frame (7); the grinding frame (7) is slidably mounted on the workbench (1); the grinding frame (7) is located on one side of the placement component (2); an elastic component (6) is further provided on the workbench (1); the elastic component (6) drives the grinding frame (7) to slide toward the placement component (2); the placement component (2) comprises a workpiece clamping module composed of a lower base (3) and an upper base (4) respectively arranged above and below, a rotating driving member (51) for driving the workpiece clamping module to rotate, and a moving driving member (52) for driving the upper base (4) and the lower base (3) to approach each other; There are at least two types of workpiece clamping modules, one type of workpiece clamping module is set as a hole workpiece clamping module, the lower base (3) of the hole workpiece clamping module is protrudingly provided with a placement column (31) and a positioning column (32), the placement column (31) and the rotation center of the lower base (3) are consistent, and the other type of workpiece clamping module is set as an external workpiece clamping module, and the upper base (4) of the external workpiece clamping module is provided with an embedding groove (41) adapted to the outer wall of the workpiece; The lower base (3) comprises a fixed portion (36) and a quick-release portion (37), wherein the fixed portion (36) is mounted on the rotating drive member (51), the fixed portion (36) is provided with a protruding plug post (361), the quick-release portion (37) is provided with a plug hole (371) for inserting the plug post (361), the axis of the plug post (361) is the rotation center of the lower base (3), the fixed portion (36) is further provided with a protruding connecting column (362), the quick-release portion (37) is provided with a connecting hole (372) for inserting the connecting column (362), there are a plurality of connecting columns (362), the plurality of connecting columns (362) are evenly arranged around the plug post (361), and the top outer wall of the plug post (361) is cantilevered with a A mounting positioning protrusion, a mounting positioning slot (3711) for the mounting positioning protrusion to slide into is provided on the wall of the insertion hole (371), the mounting positioning slot (3711) has three sections which are sequentially arranged as a first section, a second section and a third section, wherein the first section and the third section are vertically opened and spaced at a certain angle around the insertion column (361), the second section is opened around the insertion hole (371) and connects the vertically opened first section and the third section, when the mounting positioning protrusion is located in the second section of the mounting positioning slot (3711), the connecting column (362) abuts against the quick-release portion (37), and when the mounting positioning protrusion is located in the third section of the mounting positioning slot (3711), the connecting column (362) corresponds one-to-one with the connecting hole (372); The elastic component (6) comprises a constant-pressure air pump, a pump cylinder (61), a driving rod (62), a one-way constant-pressure valve (63) and an elastic reset member (64); the constant-pressure air pump constantly extracts air from the pump cylinder (61); the one-way constant-pressure valve (63) is installed at a port of the pump cylinder (61) connected to the outside; the driving rod (62) is slidably installed on the pump cylinder (61) and connected to the grinding frame (7); one end of the elastic reset member (64) is connected to the grinding frame (7) to pull the grinding frame (7) away from the workpiece clamping module to reset; There are two placement assemblies (2), which are arranged side by side. There are two corresponding grinding racks (7), which are arranged on both sides of the area where the two placement assemblies (2) are located. The two ends of the elastic reset member (64) are respectively connected to the two grinding racks (7) in a one-to-one correspondence.

2. A grinding machine according to claim 1, characterized in that: The upper base (4) comprises a rotating portion (43) and a replacement portion (44); a rotating column (431) is protruding from a side wall of the rotating portion (43) away from the movable driving member (52); at least two receiving grooves (432) are vertically provided on the rotating column (431); a linking piece (45) is rotatably connected in the receiving groove (432); the replacement portion (44) is provided with a rotating hole (441) for the rotating column (431) to be inserted; a linking groove (442) adapted to the linking piece (45) is provided on the hole wall at the bottom of the rotating hole (441); and a linking groove (442) adapted to the linking piece (45) is provided on the hole wall at the top of the rotating hole (441). The connecting groove (442) is connected to the evacuation groove (443), the groove width of the connecting groove (442) is greater than the groove width of the evacuation groove (443), and the depth of the connecting groove (442) is less than the depth of the evacuation groove (443), the evacuation groove (443) extends into the connecting groove (442), and the groove wall of the corresponding connecting groove (442) has a protrusion for the evacuation groove (443) to extend, and the bottom of the rotating hole (441) is provided with a gathering groove (444), and the groove wall of the gathering groove (444) pushes the connecting piece (45) to move toward the receiving groove (432) and retract to reach a state of entering the evacuation groove (443).

3. A grinding machine according to claim 1, characterized in that: The workpiece clamping module also has a type of universal workpiece clamping module for holes, wherein the lower base (3) of the universal workpiece clamping module for holes is elastically mounted with a limit pin (101), and there are a plurality of limit pins (101). The plurality of limit pins (101) are evenly arranged on the surface of the lower base (3), and the upper surface of the lower base (3) is located within the lower surface of the workpiece.

4. A grinding machine according to claim 1, characterized in that: The workpiece clamping module also has a kind of external universal workpiece clamping module, wherein the upper base (4) of the external universal workpiece clamping module is elastically mounted with a limit pin (101), and there are a plurality of limit pins (101). The plurality of limit pins (101) are evenly arranged on the lower surface of the upper base (4), and the lower surface of the upper base (4) is larger than the upper surface of the workpiece, so that the projection of the workpiece is located as a whole within the lower surface of the upper base (4).

5. A grinding machine according to claim 4, characterized in that: The elastic reset member (64) comprises a tension spring and a reset cylinder, the reset cylinder being mounted on the workbench (1), one end of the tension spring being connected to the piston rod of the reset cylinder, and the other end being connected to the grinding frame (7).

6. A grinding machine according to claim 4, characterized in that: The elastic reset member (64) comprises a reset pressure block (661), a pushing cylinder (662) and an elastic member (663); the reset pressure block (661) is slidably mounted on the workbench (1) and is located on a sliding path of the grinding frame (7); a guide surface (6611) is provided on a side wall of the reset pressure block (661) facing the grinding frame (7); the elastic member (663) pushes the reset pressure block (661) to protrude out of the workbench (1); and the pushing cylinder (662) is mounted on the workbench (1) to push the reset pressure block (661) to initially reset.

7. A grinding machine according to claim 6, characterized in that: The workbench (1) is provided with a baffle (9), the baffle (9) comprising a fixed baffle (91) and a movable baffle (92), the fixed baffle (91) being fixed to the workbench (1), the movable baffle (92) being slidably mounted on the upper portion of the fixed baffle (91), a pull-down column (921) being provided on the lower side of the movable baffle (92), the workbench (1) being provided with a pull-down column hole (13) for the pull-down column (921) to be slidably mounted, the workbench (1) being provided with a reset pressure block hole (12) for the reset pressure block (661) to be slidably mounted, and the reset pressure block hole (12) being connected to the pull-down column hole (13), and the elastic member (663) being a flexible filler and filling the reset pressure block hole (12) and the pull-down column hole (13).

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