Automatic milling cutter grinding machine

Abstract

An automatic sharpening milling cutter grinder relates to the field of grinding devices, including a frame, a grinding disc, a blade groove grinding seat, a tool setting seat, a top holding block and a control rod. The grinding disc can be vertically rotatably arranged on the frame, the blade groove grinding seat can be moved up and down on the frame, and is equipped with a first elastic member to urge it to move downward; the tool setting seat is fixed to the bottom of the blade groove grinding seat; the top holding block is arranged on the frame and is located below the tool setting seat; the control rod can be vertically rotatably arranged on the frame, and the control rod and the tool setting seat are held up and down. The present invention redesigns the existing grinder and can automatically perform blade groove processing; by adding a first elastic member and a control rod, the assembly position of the tool setting seat is adjusted to achieve quick and accurate control of the relevant grinding seat, and the clamping seat is convenient to load and unload, so as to achieve automatic sharpening, reduce the difficulty of operation, and improve the working efficiency and stability of the equipment.

Description

Technical Field

[0001] The invention relates to the field of grinding devices, and more particularly to an automatic edge-cutting milling cutter grinding machine. Background Art

[0002] A ball-end cutter is a tool with one or more blades similar to a ball head. When in use, the ball-end cutter is rotated to perform milling processing on the workpiece. Existing milling cutter grinders usually include multiple adjustable processing seats with different functions. Each processing seat needs to be adjusted individually before processing, which is inconvenient to use, cumbersome to operate, and has poor precision. For example, the ball-end cutter grinder disclosed in the Chinese patent with authorization announcement number CN 203245683 U and the round nose milling cutter grinder disclosed in the Chinese patent with authorization announcement number CN 204893589 U both have the above problems. Therefore, it is necessary to design a milling cutter grinder that is easy to operate, efficient, fully functional, and has high processing precision.

[0003] In order to solve the above problems, the Chinese patent application document with the announcement number CN110026833A discloses an automatic sharpening milling cutter grinder, but it still has the following problems: (1) If the blade groove grinding seat is moved down to grind the blade groove by manual pressing, the downward movement speed of the blade groove grinding seat is prone to change irregularly due to the change of pressing force, resulting in problems such as laborious operation and difficulty in controlling the grinding depth and speed; (2) The blade groove grinding seat and the rear clearance surface grinding seat are assembled from a number of accessories, which are easy to loosen after long-term use, affecting the processing accuracy of the whole machine. Therefore, it is necessary to design an improved milling cutter grinder. Summary of the invention

[0004] The invention provides an automatic sharpening milling cutter grinder, the purpose of which is to overcome the above-mentioned problems existing in the prior art.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An automatic sharpening milling cutter grinder comprises a frame, a grinding disc, a blade groove grinding seat and a tool setting seat, wherein the grinding disc can be vertically rotatably arranged on the frame, the blade groove grinding seat can be moved up and down on the frame, and the tool setting seat is fixedly arranged at the bottom of the blade groove grinding seat; it also includes a control rod and a first elastic member that moves the blade groove grinding seat downward, and the control rod can be vertically rotatably arranged on the frame below the tool setting seat, and is used to support the tool setting seat and control the moving speed of the blade groove grinding seat.

[0007] Furthermore, the first elastic member is a first tension spring connecting the blade groove grinding seat and the frame.

[0008] Furthermore, the control rod is equipped with a second elastic member that forces it to rotate toward the bottom of the tool holder.

[0009] Furthermore, the second elastic member is a second tension spring connecting the control rod and the tool holder.

[0010] Furthermore, it also includes a locking mechanism for fixing the control rod so that the control rod is held against the bottom of the tool holder.

[0011] Furthermore, the frame is provided with a base block, and the control rod is rotatably arranged on the base block.

[0012] Furthermore, the control rod is provided with a spring ball plunger, and the base block is provided with a positioning hole 1 which cooperates with the spring ball plunger.

[0013] Furthermore, it also includes a locking mechanism 2 for fixing the control rod so that the control rod and the tool holder remain in a completely separated state.

[0014] Furthermore, the base block is provided with a second positioning hole cooperating with the spring ball plunger.

[0015] Furthermore, it also includes a supporting block for cooperating with the tool holder, the supporting block is movably arranged on the base block, and a limiting protrusion is also arranged on the upper end surface of the supporting block.

[0016] Furthermore, the control rod is L-shaped.

[0017] Furthermore, an arc-shaped protrusion is provided at the corner of the upper end surface of the control rod.

[0018] Furthermore, it also includes a first movable platform, which is movably arranged on the frame forward and backward, and the first movable platform is inclinedly provided with a limiting table surface, and the bottom of the tool holder is provided with a limiting block for supporting the limiting table surface.

[0019] Furthermore, it also includes a second movable table and a rear angle surface grinding seat, the second movable table can be movably arranged on the upper end surface of the first movable table; the rear angle surface grinding seat can be rotatably arranged on the upper end surface of the second movable table and is located on the left side of the grinding disc; a fixed block is provided on the left side of the machine base, and the fixed block is provided with a hand-held part, and a joystick is provided on the left side of the second movable table; a dial indicator is provided between the fixed block and the first movable table.

[0020] An automatic sharpening milling cutter grinder comprises a frame, a grinding disc, a blade groove grinding seat and a tool setting seat, wherein the grinding disc can be vertically rotatably arranged on the frame, the blade groove grinding seat can be moved up and down on the frame, and the tool setting seat is fixedly arranged at the bottom of the blade groove grinding seat; it also comprises a control rod and a first elastic member for moving the blade groove grinding seat downward, the control rod can be vertically rotatably arranged on the frame below the tool setting seat, and is used to support the tool setting seat and control the moving speed of the blade groove grinding seat.

[0021] Furthermore, the first elastic member is a first tension spring connecting the blade groove grinding seat and the frame.

[0022] Furthermore, the control rod is equipped with a second elastic member that causes it to rotate toward the bottom of the tool holder.

[0023] Furthermore, the second elastic member is a second tension spring connecting the control rod and the tool holder.

[0024] Furthermore, the frame is provided with a base block, and the control rod is rotatably arranged on the base block.

[0025] Furthermore, it also includes a supporting block for cooperating with the tool holder, the supporting block is movably arranged on the base block, and a limiting protrusion is also arranged on the upper end surface of the supporting block.

[0026] Furthermore, the control rod is L-shaped.

[0027] Furthermore, an arc-shaped protrusion is provided at the corner of the upper end surface of the control rod.

[0028] Furthermore, it also includes a first movable platform, which is movably arranged on the frame forward and backward, and the first movable platform is inclinedly provided with a limiting table surface, and the bottom of the tool holder is provided with a limiting block for supporting the limiting table surface.

[0029] Furthermore, it also includes a second movable table and a rear angle surface grinding seat, the second movable table can be movably arranged on the upper end surface of the first movable table; the rear angle surface grinding seat can be rotatably arranged on the upper end surface of the second movable table and is located on the left side of the grinding disc; a fixed block is provided on the left side of the machine base, and the fixed block is provided with a hand-held part, and a joystick is provided on the left side of the second movable table; a dial indicator is provided between the fixed block and the first movable table.

[0030] Compared with the prior art, the advantages of the present invention are:

[0031] First, the present invention redesigns the existing grinding machine, and with the help of the first elastic member, the blade groove grinding seat can automatically move down to process the blade groove. In addition, by adding the first elastic member and the control rod, the assembly position of the blade seat is adjusted, and the downward movement speed of the blade groove grinding seat is manually controlled by operating the control rod. Before the milling cutter contacts the grinding disc and in the initial stage of contact, the control rod can be held and rotated downward at an appropriate speed, so that the milling cutter slowly approaches the grinding disc along with the blade groove grinding seat, and the grinding process is started in a more gentle manner, thereby overcoming the disadvantage of the first elastic member, that is, avoiding damage to the milling cutter or the grinding disc due to the milling cutter descending too fast, thereby affecting the product quality. In addition, the control rod can also fix the blade groove grinding seat and other related processing seats in the initial position, which is convenient for loading and unloading the clamping seat. The present invention has the advantages of automatic sharpening, labor saving, reduced operation difficulty, and high work efficiency.

[0032] Secondly, in the present invention, the control rod is also equipped with a second elastic member that causes it to rotate toward the bottom of the tool seat. The second elastic member can ensure that under normal operation (rotating the control rod downward with appropriate force), the control rod and the tool seat always maintain mutual support, and there is good followability between the two, unless the control rod is rotated downward at an extremely fast speed, thereby ensuring that the moving speed and position of the blade groove grinding seat can be well controlled by rotating the control rod. In addition, when the blade groove grinding seat is lifted, the control rod can be automatically reset with the help of the force of the second elastic member, that is, the control rod rotates to the bottom of the tool seat, and the blade groove grinding seat and the tool seat are kept at a high position, and it has the advantages of reducing manual operation, improving work efficiency, and facilitating loading and unloading of the clamp seat.

[0033] Third, in the present invention, the machine base is provided with a fixed block with a hand-held portion, and the second movable table is provided with a joystick. During the back angle surface grinding process, when the second movable table needs to be moved, the thumb can be held on the joystick, and the other four fingers can be bent and held in the opposite direction on the hand-held portion of the fixed block, and then the fixed block is used as a fixed fulcrum, and the thumb is used to push the joystick and the second movable table to move, so as to perform the feed operation during the back angle surface grinding process, which is more labor-saving to use, and the moving speed and distance of the second movable table can be better controlled to ensure the processing efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0035] Figure 2 The partial disassembly diagram of the present invention is shown in FIG. Figure 1 (The second elastic member is not shown).

[0036] Figure 3 The partial disassembly diagram of the present invention is shown in FIG. Figure 2 (The second elastic member is not shown).

[0037] Figure 4 It is the right side view of the present invention after the blade groove grinding seat moves down. Wherein, the position of the control rod shown in the figure is position one.

[0038] Figure 5 It is the right side view of the present invention after the blade groove grinding seat is moved up. Wherein, the position of the control rod shown in the figure is position two.

[0039] Figure 6 It is a schematic diagram of the structure of the milling cutter and the clamping seat.

[0040] Figure 7 Schematic diagram of the second embodiment of the second elastic member in the present invention. The solid line part indicates that the second elastic member and the control rod are in position one. Figure 4The dotted line indicates that the second elastic member and the control rod are in position II. Figure 5 Status when in the position shown. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.

[0042] refer to Figure 6 In order to better illustrate the technical solution of the present invention, it is necessary to first briefly introduce the general structure of an existing milling cutter and a clamping seat. Specifically, the clamping seat 100 is provided with a clamping hole 1001 for inserting the milling cutter a, and the clamping seat 100 is equipped with a screw hole 1003 communicating with the clamping hole 1001, and a locking screw 1002 for locking the milling cutter a and the clamping seat 100 is installed in the screw hole 1003. A positioning portion 1004 is provided on the two opposite side walls of the clamping seat 100. The milling cutter a includes a blade groove a1, a rear angle surface a2 and a rear wall empty surface a3. Among them, the blade groove a1 includes a plane a11 and a curved surface a12.

[0043] refer to Figures 1 to 6 An automatic sharpening milling cutter grinding machine includes a frame 1, a grinding disc 2, a first movable table 3, a second movable table 4, a tool setting seat 5, a blade groove grinding seat 6, a rear angle surface grinding seat 7, a rear clearance surface grinding seat 8, a motor 9, a control rod 10, a first elastic member 11 and a second elastic member 12. The tool setting seat 5, the blade groove grinding seat 6, the rear angle surface grinding seat 7 and the rear clearance surface grinding seat 8 are all provided with mounting holes and locking screws for installing a clamp seat 100, and a matching positioning portion 1004 is provided on one side of the mounting hole for directional installation of the positioning groove of the clamp seat 100. Since the specific structure and method of the directional fixed installation of the clamp seat 100 and each processing seat belong to the more conventional mechanical structure of the existing grinder, those skilled in the art can refer to the drawings and the prior art for understanding and implementation, and will not be repeated here. However, the specific structure and method for directional fixed installation of the clamping base 100 and the mounting holes of each processing seat are not limited thereto. Any structure and method that can firmly and conveniently install the clamping base 100 on each processing seat can be applied to the milling cutter grinder.

[0044] refer to Figures 1 to 5 The frame 1 is an inverted T-shaped frame mainly composed of a bottom plate 13 and a vertical plate 14. The motor 9 is horizontally fixedly installed on the rear end surface of the vertical plate 14. The output shaft of the motor 9 passes through the vertical plate 14 and is fixedly installed with a grinding disc 2.

[0045] refer to Figures 1 to 5, the first movable platform 3 is movably arranged on the machine base 1 and is located below the grinding disc 2. Specifically, the first movable platform 3 is movably installed on the bottom plate 13 of the machine base 1 through a screw sliding mechanism (not shown in the figure). The front wall of the first movable platform 3 is installed with an adjustment knob 31 for adjusting the screw sliding mechanism and moving the first movable platform 3, so as to facilitate the user to manually adjust the machine. Since the screw sliding mechanism with an adjustment knob is a common structure in the field of mechanical manufacturing for realizing a movable connection between two components, the specific structure of the screw sliding mechanism will not be repeated here, but the protection scope of this patent is not limited to the screw sliding mechanism, and any mechanical structure or adjustment method that can realize similar adjustment rules in this patent is within the protection scope of this patent.

[0046] refer to Figures 1 to 6 , the second movable table 4 is arranged on the upper end surface of the first movable table 3 so as to be movable left and right through a ball-type linear guide (not shown in the figure). A spring 1 is hidden between the first movable table 3 and the second movable table 4 to move the second movable table 4 to the left (it is not shown in the figure due to being blocked by other components). In order to enable the back angle grinding seat 7 to normally process the back angle surface a2 on the milling cutter a, the upper end surface of the second movable table 4 is an inclined surface with a lower front and a higher back. As a specific implementation scheme, the angle between the inclined surface and the horizontal plane is approximately 10°. Of course, the inclination angle of the upper end surface of the second movable table 4 is not limited to 10°, and appropriate parameters should be designed according to the type of milling cutter to be processed.

[0047] refer to Figures 1 to 5 The rear angle surface grinding seat 7 is rotatably arranged on the upper end surface of the second movable platform 4 by means of a pin shaft and a bearing, and is located on the left side of the grinding disc. A spring 2 is arranged between the rear wall of the rear angle surface grinding seat 7 and the second movable platform 4 to make the rear angle surface grinding seat 5 rotate to the left (it is not shown in the attached figure due to being blocked by other components).

[0048] It is a common structure in the existing mechanical manufacturing field to arrange a spring between two parts that can rotate relative to each other so that one of the parts can automatically move and return to a fixed position of the other part. Those skilled in the art can design and implement it as needed based on the functions to be achieved by the spring and in combination with the existing technology. Therefore, the specific installation structure of the above-mentioned spring 1 and the above-mentioned spring 2 will not be described in detail.

[0049] refer to Figures 1 to 5 In order to better control the speed and distance of the second movable platform 4 moving to the right, a fixed block 15 is provided on the left side of the bottom plate 13, and the fixed block 15 is provided with a hand-held portion. At the same time, a joystick 41 is provided on the left side of the second movable platform 4.

[0050] refer to Figures 1 to 5In order to better adjust and control the front-back displacement of the first movable table 3, a dial indicator 33 is provided between the fixed block 15 and the rear wall of the first movable table 3. Since the use of a dial indicator to measure the displacement of the moving part belongs to conventional technology, the specific installation method of the dial indicator 33 is not described here. In addition, reference can also be made to the relevant contents recorded in the Chinese patent application document "An Automatic Sharpening Milling Cutter Grinding Machine" with the announcement number CN110026833A.

[0051] refer to Figures 1 to 5 The blade groove grinding seat 6 is roughly L-shaped, including a guard plate 61, a blade groove grinding seat body 62 and a mounting plate 63 which are formed by molding. Among them, the mounting plate 63 is movably arranged on the front end face of the vertical plate 14 through a slide rail structure (not shown in the figure), and the guard plate 61 and the blade groove grinding seat body 62 are located above the grinding disc 2, and the axis of the mounting hole of the blade groove grinding seat 6 intersects with the corner line of the front end face of the grinding disc 2. The blade groove grinding seat 6 is also equipped with a first elastic member 11 that prompts it to move downward. As a specific implementation scheme, the first elastic member 11 can be a first tension spring, the upper end of which is connected to the groove of the rear end face of the mounting plate 63, hidden between the mounting plate 63 and the vertical plate 14, and the lower end of which is connected to the front end face of the vertical plate 14.

[0052] refer to Figures 1 to 5 The rear clearance surface grinding seat 8 is roughly L-shaped, including a ring body 81 and a rear clearance surface grinding seat body 82 which are formed by molding. Among them, the cross section of the ring body 81 along the vertical direction is L-shaped, and the ring body 81 is provided with a notch 811 and is equipped with a locking screw (not shown in the figure) that passes through the notch 811. The blade groove grinding seat 6 is provided with a recess 622 surrounding its mounting hole, and the ring body 81 is rotatably mounted in the recess 622. In order to ensure the smoothness of rotation, the blade groove grinding seat 6 is also equipped with a bearing 608 in the recess 622, wherein the inner ring of the bearing 608 is connected to the blade groove grinding seat 6, and the outer ring is connected to the ring body 81. And a limiting structure is formed between the ring body 81 and the blade groove grinding seat 6 so that the rear clearance surface grinding seat 8 can only rotate horizontally 90°.

[0053] refer to Figures 1 to 5 The tool holder 5 is fixedly mounted on the lower end surface of the mounting plate 63 by screws and is located on the right side of the grinding disc 2. A limit block 51 is vertically arranged on the lower end surface of the tool holder 5 by molding.

[0054] refer to Figures 1 to 5In order to make the change in the front-rear displacement of the first movable table 3 the same as the change in the bottom dead point of the travel of the tool holder 5 and the blade groove grinding seat 6, so as to achieve the purpose of synchronously adjusting multiple stations, the right side wall of the first movable table 3 is inclinedly provided with a limit table surface 32 for holding against the limit block 51. The limit table surface 32 is an inclined surface with a low front and a high rear, and an angle of 45° between it and the horizontal plane. Preferably, the lower end surface of the limit block 51 is also an inclined surface with a low front and a high rear, and an angle of 45° between it and the horizontal plane.

[0055] refer to Figures 1 to 6 The bottom plate 13 is fixed with a base block 112 by screws, and a holding block 111 is movably arranged at the front end of the base block 112 through a dovetail groove structure. The holding block 111 is located below the tool seat 5 and is used to hold the tip of the milling cutter a. A limiting protrusion 110 is also provided on the upper end surface of the holding block 111 for engaging the blade groove a1 of the milling cutter a.

[0056] refer to Figures 1 to 5 The control rod 10 is L-shaped, and one end of the control rod 10 is hinged to the left side wall of the base block 112 by rivets so as to be able to rotate up and down. The control rod 10 is also equipped with a second elastic member 12 to enable it to rotate toward the bottom of the tool holder. Preferably, the upper end face of the control rod 10 is provided with an arc-shaped protrusion at the corner, so that the upper end face of the control rod 10 is supported against the tool holder at two fulcrums (the upper arc-shaped protrusion and the other end of the upper end face of the control rod 10), which can reduce the contact area between the control rod 10 and the tool holder, making it easier to rotate the control rod 10. Preferably, the second elastic member 12 is a second tension spring.

[0057] refer to Figures 1 to 5 , as the first embodiment of the second tension spring: one end of the second tension spring is connected to the middle of the control rod 10, and the other end is connected to the right side wall of the limit block 51. Of course, a return torsion spring can also be provided at the hinge of the control rod 10 and the base block 112 to serve as the second elastic member 12. In addition, in order to facilitate operation, a handle (not shown in the figure) can be connected to the free end of the control rod 10.

[0058] Reference Figure 4 , Figure 5 and Figure 7, as the second embodiment of the second tension spring: one end of the second tension spring is connected to the middle of the control rod 10, and the other end is connected to the fixed point a of the frame 1. The straight line between the fixed point a and the pivot point b of the control rod 10 is recorded as the connecting line ab. The connecting point of the second tension spring and the control rod 10 when it is in position one is position c, and the connecting point of the second tension spring and the control rod 10 when it is in position two is position c'. The selected fixed point a must meet the following conditions: position c' and position c are respectively on the upper and lower sides of the connecting line ab. In this way, when the connecting point of the second tension spring and the control rod 10 is located on the lower side of the connecting line ab, due to the action force of the second tension spring, the control rod 10 will automatically rotate downward to position one and finally be fixed, so that the control rod 10 is completely separated from the tool holder. When the connecting point of the second tension spring and the control rod 10 is located on the upper side of the connecting line ab, due to the action force of the second tension spring, the control rod 10 will automatically rotate upward to position two and finally be fixed, so that the control rod 10 and the tool holder 5 are held up and down.

[0059] refer to Figures 1 to 5 The present invention further includes a locking mechanism 1 for fixing the control rod 10 so that the control rod 10 is held against the bottom of the tool setting seat 5. Specifically, the locking mechanism 1 includes a spring ball plunger 101 installed on the control rod 10, and a positioning hole 113 opened on the base block 112. The positioning hole 113 and the spring ball plunger 101 cooperate with each other to fix the control rod 10 at position 2, thereby preventing the control rod 10 from accidentally rotating out from the bottom of the tool setting seat 5 due to the action of the first elastic member 11.

[0060] refer to Figures 1 to 5 The present invention also includes a second locking mechanism for fixing the control rod 10 so that the control rod 10 and the tool setting seat 5 are kept in a completely separated state. Specifically, the second locking mechanism includes a spring ball plunger 101 installed on the control rod 10 and a second positioning hole 114 opened on the base block 112. It prevents the control rod 10 from accidentally rotating upward due to the action of the second elastic member 12, thereby preventing the tool setting seat 5, the blade groove grinding disc 6, etc. from moving downward due to the action of the first elastic member 11.

[0061] Reference Figures 1 to 6 The specific operation steps and working principle of the milling cutter a of the present invention are as follows:

[0062] 1. Tool setting

[0063] (1.1) Use external force to move the blade groove grinding seat 6 and the tool setting seat 5 upward until the control rod 10 rotates to the bottom of the tool setting seat 5 due to the force of the second elastic member 12, that is, Figure 5 and then cancel the external force, so that the tool holder 5 moves downward due to the force of the first elastic member 11, until the control rod 10 and the tool holder 5 are held against each other and fixed.

[0064] (1.2) According to the radius of the milling cutter a, rotate the adjusting knob 31 to adjust the first movable table 3 to the appropriate position, and adjust the blade groove grinding seat 6 and the lower stop of the travel of the tool holder 5, that is, when the limit table surface 32 is in contact with the limit block 51, the inner angle line of the blade groove a1 processed on the milling cutter a by the blade groove grinding seat 6 is roughly at the axial center line position of the milling cutter a.

[0065] (1.3) Use hand to rotate the control rod 10 in the opposite direction and pull it out from the bottom of the tool holder 5 until the limit block 51 contacts the limit table surface 32. Figure 4 At this time, even if the external force is removed, the blade groove grinding seat 6 and the tool seat 5 will not move up automatically due to the force of the control rod 10.

[0066] (1.4) Insert the milling cutter a into the clamping hole 1001 of the fixture 100, place the fixture 100 in the mounting hole of the tool holder 5, and make one end face of the fixture 100 closely contact the end face of the tool holder 5; use the locking screw to lock the fixture 100 to the tool holder 5.

[0067] (1.5) If a brand new milling cutter a is made of a rod, it is only necessary to move the milling cutter a downward so that the lower end is supported against the supporting block 111. If an old milling cutter a is refurbished, in addition to supporting the tip of the milling cutter a against the supporting block 111, it is also necessary to rotate and adjust the milling cutter a appropriately and move the supporting block 111 to the right so that the limiting protrusion 110 is embedded in one of the blade grooves a1 of the milling cutter a.

[0068] (1.6) Use a screwdriver to lock the locking screw 1002 into the screw hole 1003 of the fixture 100 through the through hole of the tool holder 5 until the milling cutter a and the fixture 100 are locked; then loosen the locking screw that fixes the fixture 10 and the tool holder 5, and remove the fixture 100 from the tool holder 5.

[0069] 2. Grinding blade groove (blade sharpening)

[0070] (2.1) Use external force to move the blade groove grinding seat 6 and the tool seat 5 upward until the control rod 10 rotates to the bottom of the tool seat 5 due to the force of the second elastic member 12, that is, Figure 4 and then cancel the external force, so that the tool holder 5 moves downward due to the force of the first elastic member 11, until the control rod 10 and the tool holder 5 are held against each other and fixed.

[0071] (2.2) Place the fixture 100 into the mounting hole of the blade groove grinding seat 6 with the blade head facing downward, so that the end face of the fixture 100 is tightly attached to the upper end face of the blade groove grinding seat 6, and then use the locking screw to lock the fixture 100 to the blade groove grinding seat 6.

[0072] (2.3) Start the motor 31 to rotate the grinding disc 32 at high speed.

[0073] (2.4) Use hand to rotate the control lever 10 in the opposite direction, and the blade groove grinding seat 6 will automatically move down under the action of the first elastic member 11. Before the milling cutter a contacts the grinding disc 2 and in the initial stage of contact, the control lever 10 should be held and rotated downward at an appropriate speed to allow the blade groove grinding seat 6 and other corresponding parts to slowly move downward, so that the milling cutter a slowly approaches the grinding disc 2, and the grinding process can be started in a more gentle manner to avoid damage to the milling cutter a or the grinding disc due to the milling cutter a descending too fast, thereby affecting the product quality. When the milling cutter a contacts the front edge of the grinding disc 2, the blade groove a1 starts to be ground; after a period of time after the grinding begins, the user can directly rotate the control lever 10 downward to Figure 4 In the state shown, the blade groove grinding seat 6 and the milling cutter a are automatically moved downward under the action of the first elastic member 11 to complete the subsequent blade groove grinding work; until the limiting table 32 contacts the limiting block 51, a complete blade groove a1 is formed on the milling cutter a.

[0074] (2.4) Repeat step (2.1).

[0075] (2.6) After rotating the fixture 100 horizontally by 180°, re-lock the fixture 100 on the blade groove grinding seat 6 according to step (2.2).

[0076] (2.7) Repeat step (2.4) to grind another blade groove a1 on the milling cutter a.

[0077] (2.8) Repeat step (2.1) and remove the fixture 100.

[0078] 3. Grinding the rear angle surface

[0079] (3.1) Place the fixture 100 into the mounting hole of the rear angle surface grinding seat 7 with the blade facing rightward, so that the end face of the fixture 100 is in close contact with the left end face of the rear angle surface grinding seat 7, and then use the locking screw to lock the fixture 100 to the rear angle surface grinding seat 7.

[0080] (3.2) Place the thumb of your left hand on the left side of the joystick 41, bend the other four fingers and hold them on the grip 151 of the fixed block 15, then use the fixed block 15 as a fixed fulcrum and use your thumb to push the joystick 41, the second movable table 4 and the rear angle grinding seat 7 to move. After reaching the appropriate position, fix them and the feed action is completed. At this time, the tip of the milling cutter a is in front of the grinding disc 32.

[0081] (3.3) The rear angle grinding seat 7 is rotated rightward by an external force (i.e., the right hand) at an angle of approximately 90°, and the rear angle surface a2 is ground behind the rotary cutting of one of the planes a11 using the front end surface of the grinding disc 32; the external forces in steps (3.3) and (3.2) are removed in sequence, and the rear angle grinding seat 7 and the second movable table 4 are restored to their initial positions by means of the above-mentioned spring 2 and spring 1.

[0082] (3.4) Rotate the fixture 100 180° and re-install it into the rear angle grinding seat 7, and tighten the locking screw to fix the two.

[0083] (3.6) Repeat steps (3.2) and (3.3) to grind a back angle surface a2 behind the rotary cutting of another plane a11 of the milling cutter a.

[0084] 4. Grinding the empty surface of the back wall

[0085] (4.1) Re-adjust the first movable table so that the hollow surface of the rear wall formed by grinding meets the processing parameters of the hollow surface of the rear wall (different specifications of milling cutters have different depths of hollow surfaces of the rear walls. How to adjust the first movable table to achieve the corresponding processing parameters belongs to the basic principle of adjustment of the existing milling cutter grinder. Those skilled in the art can know it based on the existing technology and will not be repeated here.).

[0086] (4.2) Rotate the rear wall blank surface grinding seat 8 to the right, and insert the clamp 100 into the mounting hole of the rear wall blank surface grinding seat 8 with the blade facing left, so that the end face of the clamp 100 is tightly attached to the rear wall blank surface grinding seat 8, and then use the locking screw to lock the two.

[0087] (4.3) Use handheld device to rotate the control lever 10 in the opposite direction and pull it out from the bottom of the tool holder 5 to move the rear wall empty surface grinding seat 8 downward until the limit block 51 contacts the limit table surface 32.

[0088] (4.4) The rear wall hollow surface grinding seat 8 is rotated approximately 90° to the left by an external force, and a rear wall hollow surface a3 is ground behind the rotary cutting of one of the rear angle surfaces a2 using the arc surface of the grinding disc 32; the rear wall hollow surface grinding seat 8 is then rotated to the right to the far right.

[0089] (4.5) Use external force to move the rear wall empty surface grinding seat 8 upward until the control rod 10 rotates to the bottom of the tool seat 5 due to the force of the second elastic member 12, and then cancel the above external force, so that the tool seat 5 moves downward due to the force of the first elastic member 11 until the control rod 10 and the tool seat 5 are supported and fixed.

[0090] (4.6) Rotate the fixture 100 180° and re-lock it on the rear wall empty surface grinding seat 8.

[0091] (4.8) Repeat steps (4.3) and (4.4) to use the arc surface of the grinding disc 32 to grind out a rear wall hollow surface a3 after the rotary cutting of another rear angle surface a2.

[0092] In the description of the present invention, it should be understood that the terms "vertical", "horizontal", "front", "rear", "left", "right", "high", "low", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0093] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0094] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixed installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediate medium, it can be the internal communication between two parts or the interaction relationship between two parts. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0095] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An automatic sharpening milling cutter grinding machine, comprising a frame, a grinding disc, a blade groove grinding seat and a tool setting seat, wherein the grinding disc can be vertically rotatably arranged on the frame, and the blade groove grinding seat can be moved up and down on the frame, characterized in that: The tool setting seat is fixedly arranged at the bottom of the blade groove grinding seat; it also includes a control rod and a first elastic member that moves the blade groove grinding seat downward, the control rod can be vertically rotatably arranged on the frame below the tool setting seat, used to support the tool setting seat and control the moving speed of the blade groove grinding seat; it also includes a rear clearance surface grinding seat, which is L-shaped, including a ring body and a rear clearance surface grinding seat body formed by molding, the cross section of the ring body along the vertical direction is L-shaped, the ring body is provided with a notch and is equipped with a locking screw that passes through the notch, the blade groove The grinding seat is provided with a recessed portion surrounding its mounting hole, and the ring body is rotatably mounted in the recessed portion; a limiting structure is formed between the ring body and the blade groove grinding seat so that the rear avoidance surface grinding seat can only rotate horizontally 90°; the control rod is equipped with a second elastic member that prompts it to rotate toward the bottom of the tool seat; it also includes a locking mechanism 1 for fixing the control rod so that the control rod is held against the bottom of the tool seat; the frame is provided with a base block, and the control rod is rotatably mounted on the base block; it also includes a locking mechanism 2 for fixing the control rod so that the control rod and the tool seat remain in a completely separated state.

2. The automatic sharpening milling cutter grinding machine according to claim 1, characterized in that: It also includes a supporting block for cooperating with the tool holder. The supporting block can be movably arranged on the base block, and a limiting protrusion is also arranged on the upper end surface of the supporting block.

3. An automatic sharpening milling cutter grinder according to claim 1 or 2, characterized in that: The control rod is L-shaped.

4. The automatic sharpening milling cutter grinding machine according to claim 3, characterized in that: The upper end surface of the control rod is provided with an arc-shaped protrusion at the corner.

5. The automatic sharpening milling cutter grinding machine according to claim 1, characterized in that: It also includes a first movable platform, which is movably arranged on the frame forward and backward, and the first movable platform is inclinedly provided with a limiting table surface, and the bottom of the tool holder is provided with a limiting block for supporting the limiting table surface.

6. The automatic sharpening milling cutter grinding machine according to claim 5, characterized in that: It also includes a second movable table and a rear angle surface grinding seat, wherein the second movable table can be movably arranged on the upper end surface of the first movable table; the rear angle surface grinding seat can be rotatably arranged on the upper end surface of the second movable table and is located on the left side of the grinding disc; a fixed block is provided on the left side of the frame, and the fixed block is provided with a hand-held part, and a joystick is provided on the left side of the second movable table; a dial indicator is provided between the fixed block and the first movable table.

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