Positioning tool of surface grinding machine

Abstract

The utility model discloses a positioning tool of a surface grinding machine, which comprises a machine tool, a platform provided with a waste collecting hole and a positioning frame, clamping components are connected to two sides of a short edge of the positioning frame, a transverse clamping plate and a vertical clamping plate are arranged in two adjacent sides of the positioning frame, and one side of each of the transverse clamping plate and the vertical clamping plate is in threaded connection with a group of long screws. One side of the bottom of each of the transverse clamping plate and the vertical clamping plate is detachably connected with a scraper and a cleaning sponge; the two groups of long screws respectively penetrate through the other two adjacent side surfaces of the positioning frame in a sliding manner and are in threaded connection with a group of butterfly nuts which are respectively propped against the inner side and the outer side of the positioning frame; two sets of parallel wood hammerheads, a lifting mechanism for driving the two sets of parallel wood hammerheads to sequentially hammer and a first driving mechanism for driving the lifting mechanism to vertically translate along the short edge of the positioning frame are arranged on the upper portion outside one side of the positioning frame, and the driving end of the lifting mechanism is detachably connected with the tops of the wood hammerheads; a second driving mechanism for driving the first driving mechanism to translate transversely along the long side of the positioning frame is arranged on one side of the machine tool; the device has the advantages of good positioning effect, convenience in assembly and disassembly and multiple functions.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding machines, and more specifically relates to a positioning tool for a surface grinding machine. Background Art

[0002] Surface grinder is an important processing machine tool in the mechanical processing industry, especially in the mold industry. It mainly uses a grinding wheel to rotate and grind the surface of the workpiece so that the surface of the workpiece can reach the required flatness. The working table of the surface grinder is generally a magnetic suction cup. The working table is horizontal and suitable for processing parts with one or more reference surfaces parallel to the processed surface. When processing the workpiece, the workpiece is usually fixed on the worktable by a magnetic suction cup, and then the parameters are set to grind the workpiece. In the actual production process, due to long-term use, the service life of the magnetic suction cup will be greatly reduced, and the magnetic suction cup cannot absorb copper and aluminum workpieces, and there is a problem of poor fixed positioning effect. Therefore, it is often necessary to use positioning tooling to assist in the processing of the workpiece;

[0003] However, the positioning fixtures of existing surface grinders are complicated to install, fixed and non-adjustable, with poor positioning effect and single functionality. During the positioning and clamping process, due to small particles of waste debris or coolant of different depths remaining on the surface of some positions of the work table, it is very easy for some positions of the workpiece to have gaps and protrusions between the work table. In order to avoid affecting the overall flatness and subsequent grinding processing accuracy, it is usually necessary to manually find other tools in advance to manually clean the table and use a handheld wooden hammer to hammer the fixed workpiece to squeeze out the coolant to ensure that the bottom of the workpiece fits the work table. This is time-consuming and labor-intensive, and overall there are problems such as poor fixing and positioning effect, difficult loading and unloading, and single functionality. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a positioning fixture for a surface grinder, which has the advantages of good fixed positioning effect, easy loading and unloading and multifunctionality.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A positioning fixture for a surface grinder, comprising a machine tool and a platform arranged on the machine tool, and also comprising a positioning frame, wherein both sides of the short sides of the positioning frame are connected with clamping components for clamping both sides of the long sides of the platform, and the adjacent two sides of the positioning frame are provided with a horizontal clamping plate and a vertical clamping plate, and one side of the horizontal clamping plate and the vertical clamping plate is threadedly connected with a group of long screws; the two groups of long screws slide through the other two adjacent side surfaces of the positioning frame respectively, and are threadedly connected with a group of butterfly nuts respectively against the inner and outer sides of the positioning frame, and the platform is provided with a waste collection hole, A scraper for cleaning waste into a waste collection hole is detachably connected to one side of the bottom of the horizontal clamping plate, and a cleaning sponge is detachably connected to one side of the bottom of the vertical clamping plate. Two groups of parallel wooden hammer heads are arranged above and outside one side of the positioning frame, a lifting mechanism for driving the two groups of wooden hammer heads to hammer successively, and a first driving mechanism for driving the lifting mechanism to vertically translate along the short side of the positioning frame. The driving end of the lifting mechanism is detachably connected to the top of the wooden hammer head, and a second driving mechanism for driving the first driving mechanism to horizontally translate along the long side of the positioning frame is provided on one side of the machine tool.

[0007] Further configuration: the lifting mechanism includes a mounting plate and two groups of electric push rods, a pad is detachably connected between the top rod of the electric push rod and the top of the wooden hammer head, and the two groups of electric push rods are fixedly connected to the driving end of the first driving mechanism through the mounting plate.

[0008] Further arrangement: the first driving mechanism includes a first screw guide rail and a first stepper motor driving its slider to slide, the slider of the first screw guide rail is connected to the mounting plate, the driving end of the second driving mechanism is connected to a rotating cylinder driving the first screw guide rail to rotate in a direction away from the positioning frame, the rotating end of the rotating cylinder is connected to the bottom of one end of the first screw guide rail, a sliding part is arranged at the bottom of the other end of the first screw guide rail, and a slide rail is arranged on the other side of the machine tool for the sliding part to slide laterally along the long side of the positioning frame, and the height of the slide rail relative to the platform is lower than the height of the positioning frame relative to the platform.

[0009] It is further configured that the second driving mechanism includes a second screw guide rail and a second stepping motor driving its slider to slide, the slider of the second screw guide rail is connected to a connecting seat, and the connecting seat is connected to the bottom of the first driving mechanism.

[0010] Further configuration: the clamping assembly includes two groups of guide rods, a left clamping plate and a right clamping plate both of which are L-shaped, the vertical section of the left clamping plate is fixedly connected to one end of one group of guide rods, and the vertical section of the right clamping plate is fixedly connected to one end of the other group of guide rods, a first guide portion and a second guide portion are respectively provided on both sides of the positioning frame, the first guide portion and the second guide portion are both provided with a guide groove for the other end of the guide rod to be slidably connected, a first compression spring is connected between the horizontal end of the left clamping plate and the first guide portion, a second compression spring is connected between the horizontal end of the right clamping plate and the second guide portion, the vertical section of the left clamping plate and the vertical section of the right clamping plate are both connected to a group of positioning columns, and positioning grooves for the positioning columns to be inserted are provided on both side surfaces of the long sides of the platform.

[0011] Further configuration: an electromagnet is arranged on the platform, the bottom of the first guide part and the bottom of the second guide part are provided with iron blocks magnetically connected to the electromagnet, and the bottom of the first guide part, the bottom of the second guide part, the inner side surface of the transverse section of the left splint and the inner side surface of the transverse section of the right splint are provided with anti-slip patterns.

[0012] In summary, the utility model plays the function of performing preliminary positioning of the workpiece through the positioning frame; through the horizontal clamping plate, the vertical clamping plate, the long screw and the butterfly nut, the horizontal clamping plate and the vertical clamping plate are driven by adjusting the long screw to clamp the preliminary positioned workpiece in the positioning frame, so as to play the role of positioning and clamping the workpiece; through the lifting mechanism, the wooden hammer head, the first driving mechanism and the second driving mechanism, the lifting mechanism is first used to drive the wooden hammer head to lift and lower, simulating manual reciprocating hammering of the workpiece to squeeze out the waste liquid between the bottom of the workpiece and the platform surface, and then the first driving mechanism and the second driving mechanism are used to drive the wooden hammer head to hammer and drain the workpieces in each column in turn for multiple times along the length direction of the long side of the positioning frame until all the workpieces are hammered flat, so as to achieve the function of secondary positioning and fixing of the workpiece and improving the positioning effect; through The wooden hammer heads are arranged in two parallel groups, which is convenient for re-hammering and adjusting the workpiece that is not leveled after the initial hammering, ensuring the fit between the workpiece and the platform, and further ensuring the fixed positioning effect; by setting a scraper and a waste collection hole, the scraper is driven to clean the waste on the platform surface into the waste collection hole by moving the horizontal clamp and the long screw, and then collected externally, thereby achieving the function of removing waste and further improving the positioning effect; by using a cleaning sponge, the vertical clamp and the long screw are moved to drive the cleaning sponge to absorb the residual coolant on the platform surface in the positioning frame, thereby achieving the function of removing waste liquid and further improving the positioning effect; by using the clamping assembly, the positioning frame can be quickly loaded and unloaded on the platform; it has the advantages of good fixed positioning effect, multi-function and easy loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of an embodiment of the utility model;

[0015] Figure 3 This is a partial structural schematic diagram of a clamping assembly according to an embodiment of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the working state of the first driving mechanism of an embodiment of the utility model.

[0017] In the figure: 1. machine tool; 2. platform; 3. positioning frame; 4. horizontal clamping plate; 5. vertical clamping plate; 6. long screw; 7. waste collection hole; 8. scraper; 9. cleaning sponge; 10. wooden hammer head; 11. electric push rod; 12. mounting plate; 13. first screw guide; 14. first stepping motor; 15. rotating cylinder; 16. sliding part; 17. slide rail; 18. second screw guide; 19. second stepping motor; 20. connecting seat; 21. guide rod; 22. left clamping plate; 23. right clamping plate; 24. first guide part; 25. second guide part; 26. first compression spring; 27. second compression spring; 28. positioning column; 29. ​​positioning groove; 30. electromagnet; 31. iron block; 32. anti-slip pattern. DETAILED DESCRIPTION

[0018] In order to explain the technical content, purpose and effect of the utility model in detail, the following is a description of the embodiments and the accompanying drawings. It should be noted that the words "upper" and "lower" used in the following description refer to the attached Figure 1 In the directions, the words "bottom" and "top" refer to the Figure 1 The direction towards the geometric center of a specific component.

[0019] The key concept of the utility model is that: the positioning frame 3 is used to perform the function of preliminary positioning of the workpiece; the horizontal clamping plate 4, the vertical clamping plate 5, the long screw 6 and the butterfly nut are used to adjust the long screw 6 to drive the horizontal clamping plate 4 and the vertical clamping plate 5 to clamp workpieces of different sizes, thereby playing the role of positioning and clamping workpieces of various sizes; through the lifting mechanism, the wooden hammer head 10, the first driving mechanism and the second driving mechanism, it is simulated that the manual hand-held wooden hammer head 10 is used to hammer each column of workpieces up and down for multiple times along the length direction of the positioning frame 3 to drain water so as to adjust the flatness of the workpiece, thereby playing the role of secondary positioning and fixing the workpiece. The wooden hammer 10 is arranged in two parallel groups, and the workpiece is knocked and adjusted multiple times to ensure the fit between the workpiece and the platform 2, which further ensures the fixed positioning effect; the scraper 8 and the waste collection hole 7 are used to clean the waste on the surface of the platform 2 and collect it from the inside of the waste collection hole 7 to the outside, so as to achieve the function of removing waste; the cleaning sponge 9 is used to absorb the residual coolant on the surface of the platform 2, so as to achieve the function of removing waste; the clamping assembly is used to facilitate the quick assembly and disassembly of the positioning frame 3 on the platform 2, so as to facilitate disassembly;

[0020] The utility model has the functions of clamping and positioning the workpiece, cleaning the waste liquid, cleaning the waste material and automatically hammering and draining the water, which is convenient for disassembly and simple to operate. A scraper 8 and a cleaning sponge 9 are provided to clean the waste material and waste liquid, and at the same time, artificial hand-held wooden hammer is simulated to knock the water for positioning, which saves time and effort, and solves the problem that the positioning flatness of the overall workpiece is affected by the gap between part of the workpiece and the work surface due to the residual small particles of waste debris or coolant of different depths on the surface of part of the work surface, thereby ensuring that the bottom of the workpiece fits the work surface, and has the advantages of good fixed positioning effect, easy loading and unloading and multi-function as a whole.

[0021] Please refer to Figures 1 to 4As shown, a positioning fixture for a surface grinder includes a machine tool 1 and a platform 2. The platform 2 is arranged on the machine tool 1 and also includes a positioning frame 3. The short sides of the positioning frame 3 are connected with clamping components for clamping the long sides of the platform 2. The adjacent two sides of the positioning frame 3 are provided with a horizontal clamping plate 4 and a vertical clamping plate 5. One side of the horizontal clamping plate 4 and the vertical clamping plate 5 is threadedly connected with a group of long screws 6; the two groups of long screws 6 slide through the other two adjacent side surfaces of the positioning frame 3 respectively, and are threadedly connected with a group of butterfly nuts respectively against the inner and outer sides of the positioning frame 3. The platform 2 is provided with a waste collection Hole 7, a scraper 8 for cleaning the waste into the waste collecting hole 7 is detachably connected to one side of the bottom of the horizontal clamping plate 4, a cleaning sponge 9 is detachably connected to one side of the bottom of the vertical clamping plate 5, two groups of parallel wooden hammer heads 10 are arranged above the outside of one side of the positioning frame 3, a lifting mechanism for driving the two groups of wooden hammer heads 10 to hammer successively and a first driving mechanism for driving the lifting mechanism to vertically translate along the short side of the positioning frame 3, the driving end of the lifting mechanism is detachably connected to the top of the wooden hammer head 10, and a second driving mechanism for driving the first driving mechanism to horizontally translate along the long side of the positioning frame 3 is provided on one side of the machine tool 1.

[0022] From the above description, it can be known that before grinding the workpiece surface, first, the clamping assembly is used to facilitate the rapid loading and unloading of the positioning frame 3 on the platform 2, which facilitates disassembly; through the transverse clamping plate 4, the long screw 6, the butterfly nut and the scraper 8, the butterfly nut on the long screw 6 of the transverse clamping plate 4 is first found, and the butterfly bolt located on the inner side of the positioning frame 3 is rotated in the direction away from the positioning frame 3 until the butterfly bolt contacts one side of the transverse clamping plate 4, and then the long screw 6 of the transverse clamping plate 4 is pulled in the direction away from the positioning frame 3, so that the transverse clamping plate 4 moves from one side of the positioning frame 3 to the opposite side of the positioning frame 3. During the movement of the transverse clamping plate 4, the scraper 8 cleans the waste on the surface of the platform 2 located in the positioning frame 3 until the scraper 8 scrapes the waste into the waste collection hole 7, and the waste is collected to the outside of the positioning frame 3 through the waste collection hole 7, thereby realizing the function of removing waste; at the same time, it is avoided that small particles remain on the surface of the platform 2 After the workpiece is put into operation, the cleaning agent 5 of the tool 2 is put into operation, and the cleaning agent 5 is put into operation to clean the workpiece 2. Then, the cleaning agent 5 is put into operation to clean the workpiece 2.

[0023] When the staff positions the workpiece, first place the workpiece on the platform 2 between the other side of the horizontal clamping plate 4, the other side of the vertical clamping plate 5 and the positioning frame 3, and place the workpiece on the opposite sides of the positioning frame 3, and then push the two sets of long screws 6 towards the workpiece until the vertical clamping plate 5 and the horizontal clamping plate 4 position and clamp the workpiece, and then, rotate a set of butterfly nuts again to respectively press against the inner and outer sides of the positioning frame 3, so as to achieve the effect of initially positioning and locking the workpiece in the positioning frame 3; because the horizontal clamping plate 4, the vertical clamping plate 5 and the long screw 6 are threadedly connected, the horizontal clamping plate 4 and the vertical clamping plate 5 of corresponding thickness and length can be replaced according to workpieces of different sizes, so as to play the role of clamping and positioning workpieces of different sizes; after that, through the wooden hammer head 10, the first driving mechanism, the second driving mechanism and the lifting mechanism, the lifting mechanism is first started to drive the wooden hoe to rise and fall, simulate the manual reciprocating hammering of the workpiece, squeeze out the bottom of the workpiece and the surface of the platform 2, and then start the first driving mechanism to drive the wooden hammer head 10 along the positioning frame When the lifting mechanism 10 is lifted up, the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up, and the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up, the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up, and the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up, the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up, and the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up, the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up, and the lifting mechanism 10 is lifted up and the lifting mechanism 10 is lifted up

[0024] Furthermore, the lifting mechanism includes a mounting plate 12 and two sets of electric push rods 11, a pad is detachably connected between the top rod of the electric push rod 11 and the top of the wooden hammer head 10, and the two sets of electric push rods 11 are fixedly connected to the driving end of the first driving mechanism through the mounting plate 12.

[0025] From the above description, it can be seen that when the vertical clamping plate 5 and the horizontal clamping plate 4 clamp the workpiece and need to play the lifting mechanism, the electric push rod 11 is started, and the top rods of the two groups of electric push rods 11 are extended and retracted downward or upward in a staggered manner, driving the two groups of wooden hammer heads 10 to move upward or downward in a staggered manner, thereby realizing the function of driving the wooden hammer head 10 to hammer the workpiece up and down multiple times. When it is necessary to hammer workpieces of different thicknesses, it is only necessary to replace the pads of corresponding thickness or replace the hammer heads of corresponding models.

[0026] Furthermore, the first driving mechanism includes a first screw guide rail 13 and a first stepper motor 14 for driving its slider to slide, the slider of the first screw guide rail 13 is connected to the mounting plate 12, and the driving end of the second driving mechanism is connected to a rotating cylinder 15 for driving the first screw guide rail 13 to rotate away from the positioning frame 3. The rotating end of the rotating cylinder 15 is connected to the bottom of one end of the first screw guide rail 13, and a sliding portion 16 is arranged at the bottom of the other end of the first screw guide rail 13. A slide rail 17 is arranged on the other side of the machine tool 1 for the sliding portion 16 to slide laterally along the long side of the positioning frame 3. The height of the slide rail 17 relative to the platform 2 is lower than the height of the positioning frame 3 relative to the platform 2.

[0027] From the above description, it can be seen that after the lifting mechanism drives the wooden hammer head 10 to move up and down to hammer, the rotating cylinder 15 is first started to drive the first screw guide rail 13, the lifting mechanism and the wooden hammer head 10 to rotate together in the direction close to the positioning frame 3 until the sliding part 16 rotates to the slide rail 17. When the moving direction of the first screw guide rail is parallel to the short side direction of the positioning frame 3, the first stepper motor 14 is started again to drive the slider of the first screw guide rail 13 to move along the short side length direction of the positioning frame 3 toward the other side of the positioning frame 3, thereby driving the lifting mechanism Together with the wooden hammer head 10, it moves in a directional manner in the length direction of the short side of the positioning frame 3, thereby automatically driving the wooden hammer head 10 to hammer and drain the workpieces in a row; when all the workpieces are hammered, and the second driving mechanism drives the first screw guide rail 13, the lifting mechanism and the wooden hammer head 10 to move along the length direction of the positioning frame 3 and reset to the initial position, the external controller is used to control the rotating cylinder 15 to rotate and reset to the top of the positioning frame 3. This arrangement avoids the first screw guide rail affecting the subsequent grinding of the workpiece by the grinding wheel.

[0028] Furthermore, the second driving mechanism includes a second screw guide rail 18 and a second stepping motor 19 driving its slider to slide. The slider of the second screw guide rail 18 is connected to a connecting seat 20, and the connecting seat 20 is connected to the bottom of the first driving mechanism.

[0029] From the above description, it can be seen that after the wooden hammer head 10 completes the hammering adjustment of a row of workpieces, the second stepper motor 19 is started. The rotation of the second stepper motor 19 drives the slider of the second screw guide rail 18 to move laterally along the length direction of the positioning frame 3 toward the next row of workpieces, thereby driving the first drive mechanism, the lifting cylinder and the wooden hammer head 10 to move laterally toward the next row of workpieces, thereby automatically driving the wooden hammer head 10 to hammer and drain the workpieces in each row.

[0030] Furthermore, the clamping assembly includes two groups of guide rods 21, a left clamping plate 22 and a right clamping plate 23 both of which are L-shaped, the vertical section of the left clamping plate 22 is fixedly connected to one end of one group of guide rods 21, and the vertical section of the right clamping plate 23 is fixedly connected to one end of the other group of guide rods 21, and the first guide part 24 and the second guide part 25 are respectively provided on both sides of the positioning frame 3, and the first guide part 24 and the second guide part 25 are both provided with a guide groove for the other end of the guide rod 21 to slide and connect, a first compression spring 26 is connected between the horizontal end of the left clamping plate 22 and the first guide part 24, and a second compression spring 27 is connected between the horizontal end of the right clamping plate 23 and the second guide part 25, and the vertical section of the left clamping plate 22 and the vertical section of the right clamping plate 23 are both connected with a group of positioning columns 28, and positioning grooves 29 for the positioning columns 28 to be inserted are provided on both sides of the long side of the platform 2.

[0031] From the above description, it can be seen that when the positioning frame 3 needs to be fixed on the platform 2, first, the positioning frame 3 is placed on the platform 2, and then the left clamping plate 22 and the right clamping plate 23 are pulled in two opposite directions of the length of the short side of the platform 2 respectively, and the positioning column 28 is aligned with the positioning groove 29. After that, the left clamping plate 22 and the right clamping plate 23 are released. Under the elastic force of the first compression spring 26 and the second compression spring 27, the left clamping plate 22 and the right clamping plate 23 clamp the two side surfaces of the long side of the platform 2, and the positioning column 28 is inserted into the positioning groove 29, which avoids the shaking of the positioning frame 3. The structure is simple, which facilitates loading and unloading and has a good positioning effect.

[0032] Furthermore, an electromagnet 30 is provided on the platform 2, and an iron block 31 magnetically connected to the electromagnet 30 is provided at the bottom of the first guide portion 24 and the second guide portion 25, and anti-slip grooves 32 are provided at the bottom of the first guide portion 24, the bottom of the second guide portion 25, the inner side surface of the transverse section of the left clamping plate 22 and the inner side surface of the transverse section of the right clamping plate 23.

[0033] From the above description, it can be seen that after the positioning frame 3 is placed on the platform 2, the external controller is used to control the electromagnet 30 to be energized, and the electromagnet 30 is magnetically attracted to the iron block 31, thereby performing the initial positioning and fixing of the positioning frame 3; avoiding the positioning column 28 from being offset from the positioning groove 29 during the subsequent clamping process, thereby further improving the positioning effect; through the anti-slip grooves 32, the friction between the left clamping plate 22, the right clamping plate 23 and the platform 2, as well as the friction between the bottom of the first guide part 24, the bottom of the second guide part 25 and the platform 2 is increased, thereby further improving the positioning effect.

[0034] Reference Figures 1 to 4 , the embodiments provided by the utility model are:

[0035] A positioning tool for a surface grinder comprises a machine tool 1, a platform 2 and a positioning frame 3, wherein the platform 2 is arranged on the machine tool 1, and both sides of the short sides of the positioning frame 3 are connected with clamping components for clamping both sides of the long sides of the platform 2, and the adjacent two sides of the positioning frame 3 are provided with a horizontal clamping plate 4 and a vertical clamping plate 5, and one side of the horizontal clamping plate 4 and the vertical clamping plate 5 is threadedly connected with a group of long screws 6; the two groups of long screws 6 slide through the other two adjacent side surfaces of the positioning frame 3 respectively, and are threadedly connected with a group of butterfly nuts respectively against the inner and outer sides of the positioning frame 3; two groups of parallel wooden hammer heads 10, a lifting mechanism for driving the two groups of wooden hammer heads 10 to hammer successively, and a first driving mechanism for driving the lifting mechanism to move vertically along the short side of the positioning frame 3 are arranged above the outside of one side of the positioning frame 3, and the driving end of the lifting mechanism is detachably connected to the top of the wooden hammer head 10, and a second driving mechanism for driving the first driving mechanism to move horizontally along the long side of the positioning frame 3 is provided on one side of the machine tool 1.

[0036] The platform 2 is provided with a waste collection hole 7, a scraper 8 for cleaning waste into the waste collection hole 7 can be detachably connected to one side of the bottom of the horizontal clamping plate 4, and a cleaning sponge 9 can be detachably connected to one side of the bottom of the vertical clamping plate 5;

[0037] The lifting mechanism includes a mounting plate 12 and two sets of electric push rods 11. A pad is detachably connected between the top rod of the electric push rod 11 and the top of the wooden hammer head 10. The two sets of electric push rods 11 are fixedly connected to the driving end of the first driving mechanism through the mounting plate 12.

[0038] The first driving mechanism includes a first screw guide rail 13 and a first stepper motor 14 for driving its slider to slide. The slider of the first screw guide rail 13 is connected to the mounting plate 12. The driving end of the second driving mechanism is connected to a rotating cylinder 15 for driving the first screw guide rail 13 to rotate away from the positioning frame 3. The rotating end of the rotating cylinder 15 is connected to the bottom of one end of the first screw guide rail 13. A sliding portion 16 is arranged at the bottom of the other end of the first screw guide rail 13. A slide rail 17 is arranged on the other side of the machine tool 1 for the sliding portion 16 to slide laterally along the long side of the positioning frame 3. The height of the slide rail 17 relative to the platform 2 is lower than the height of the positioning frame 3 relative to the platform 2.

[0039] The second driving mechanism includes a second screw guide rail 18 and a second stepping motor 19 for driving its slider to slide. The slider of the second screw guide rail 18 is connected to a connecting seat 20, and the connecting seat 20 is connected to the bottom of the first driving mechanism.

[0040] The clamping assembly includes two groups of guide rods 21, a left clamping plate 22 and a right clamping plate 23 both of which are L-shaped. The vertical section of the left clamping plate 22 is fixedly connected to one end of one group of guide rods 21, and the vertical section of the right clamping plate 23 is fixedly connected to one end of the other group of guide rods 21. The first guide portion 24 and the second guide portion 25 are respectively provided with a guide groove for the other end of the guide rod 21 to slide and connect. A first compression spring 26 is connected between the horizontal end of the left clamping plate 22 and the first guide portion 24, and the horizontal end of the right clamping plate 23 is connected to the first guide portion 24. A second compression spring 27 is connected between the end and the second guide portion 25, a group of positioning columns 28 are connected to the vertical sections of the left clamping plate 22 and the vertical sections of the right clamping plate 23, and positioning grooves 29 for the positioning columns 28 to be inserted are provided on both sides of the long sides of the platform 2; an electromagnet 30 is arranged on the platform 2, and an iron block 31 magnetically connected to the electromagnet 30 is provided at the bottom of the first guide portion 24 and the second guide portion 25, and anti-slip grooves 32 are provided at the bottom of the first guide portion 24, the bottom of the second guide portion 25, the inner side surface of the transverse section of the left clamping plate 22 and the inner side surface of the transverse section of the right clamping plate 23.

[0041] In summary, compared with the prior art, the utility model has the advantages of good fixing and positioning effect, multi-function and easy loading and unloading; through the positioning frame 3, the function of preliminary positioning of the workpiece is achieved; through the horizontal clamping plate 4, the vertical clamping plate 5, the long screw 6 and the butterfly nut, the long screw 6 is adjusted to drive the horizontal clamping plate 4 and the vertical clamping plate 5 to clamp workpieces of different sizes, thereby playing the role of positioning and clamping workpieces of various sizes; through the lifting mechanism, the wooden hammer head 10, the first driving mechanism and the second driving mechanism, it is simulated that the manual hand-held wooden hammer head 10 is used to hammer and drain each column of workpieces up and down for multiple times along the length direction of the positioning frame 3 until all the workpieces are hammered flat, thereby achieving the function of secondary positioning and fixing of the workpiece and improving the positioning effect; by setting the wooden hammer head 10 The two groups are arranged in parallel, and the workpiece that has been hammered for the first time is hammered again to ensure the fit between the workpiece and the platform 2, which plays a role in further ensuring the fixed positioning effect; through the scraper 8 and the waste collection hole 7, the long screw 6 of the horizontal clamping plate 4 is pulled to drive the scraper 8 to clean the waste on the surface of the platform 2 in the positioning frame 3 into the waste collection hole 7, and then collect it externally, so as to achieve the function of removing waste and further improving the positioning effect; through the cleaning sponge 9, the long screw 6 of the vertical clamping plate 5 is pulled to drive the cleaning sponge 9 to absorb the residual coolant on the surface of the platform 2, so as to achieve the function of removing waste liquid and further improving the positioning effect; through the clamping assembly, the positioning frame 3 can be quickly loaded and unloaded on the platform 2, which plays a role in facilitating disassembly.

[0042] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A positioning fixture for a surface grinder, comprising a machine tool and a platform arranged on the machine tool, characterized in that: The cam is provided with a plurality of camshafts, each of which ...

2. The positioning fixture for a surface grinder according to claim 1, characterized in that: The lifting mechanism includes a mounting plate and two groups of electric push rods, a pad is detachably connected between the top rod of the electric push rod and the top of the wooden hammer head, and the two groups of electric push rods are fixedly connected to the driving end of the first driving mechanism through the mounting plate.

3. The positioning fixture for a surface grinder according to claim 2, characterized in that: The first driving mechanism includes a first screw guide rail and a first stepper motor driving its slider to slide, the slider of the first screw guide rail is connected to the mounting plate, the driving end of the second driving mechanism is connected to a rotating cylinder driving the first screw guide rail to rotate away from the positioning frame, the rotating end of the rotating cylinder is connected to the bottom of one end of the first screw guide rail, a sliding part is arranged at the bottom of the other end of the first screw guide rail, and a slide rail is arranged on the other side of the machine tool for the sliding part to slide laterally along the long side of the positioning frame, and the height of the slide rail relative to the platform is lower than the height of the positioning frame relative to the platform.

4. The positioning fixture for a surface grinder according to claim 1, characterized in that: The second driving mechanism includes a second screw guide rail and a second stepping motor driving its slider to slide. The slider of the second screw guide rail is connected to a connecting seat, and the connecting seat is connected to the bottom of the first driving mechanism.

5. The positioning fixture for a surface grinder according to claim 1, characterized in that: The clamping assembly includes two groups of guide rods, a left clamping plate and a right clamping plate both of which are L-shaped, the vertical section of the left clamping plate being fixedly connected to one end of one group of guide rods, and the vertical section of the right clamping plate being fixedly connected to one end of the other group of guide rods, a first guide portion and a second guide portion are respectively provided on both sides of the positioning frame, the first guide portion and the second guide portion are both provided with a guide groove for the other end of the guide rod to be slidably connected, a first compression spring is connected between the horizontal end of the left clamping plate and the first guide portion, and a second compression spring is connected between the horizontal end of the right clamping plate and the second guide portion, a group of positioning columns are connected to the vertical sections of the left clamping plate and the vertical sections of the right clamping plate, and positioning grooves for the positioning columns to be inserted are provided on both side surfaces of the long sides of the platform.

6. The positioning fixture for a surface grinder according to claim 5, characterized in that: An electromagnet is arranged on the platform, and the bottom of the first guide part and the second guide part are provided with iron blocks magnetically connected to the electromagnet, and the bottom of the first guide part, the bottom of the second guide part, the inner side surface of the transverse section of the left clamping plate and the inner side surface of the transverse section of the right clamping plate are all provided with anti-slip patterns.

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