High-precision and high-efficiency milling and grinding integrated machine

Abstract

The utility model discloses a high -efficient milling and grinding integrated machine of high accuracy, including the portal frame of setting on the base, is equipped with X direction screw rod drive mechanism on the portal frame, is equipped with first Z direction drive mechanism and second Z direction drive mechanism respectively vertically on X direction screw rod drive mechanism, is equipped with grinding wheel electric main shaft subassembly transversely on first Z direction drive mechanism, is equipped with milling main shaft box on second Z direction drive mechanism, is vertically provided with bevel gear set in milling main shaft box, and the multilayer cutter head group is connected and is installed to bevel gear set through milling main shaft, and the front side of one end of portal frame bottom is provided with sand dressing group. The utility model discloses through multilayer cutter head group realizes the orderly high accuracy, low loss, high efficiency and high smoothness milling of workpiece without changing different cutter disc, and it adopts grinding wheel electric main shaft subassembly and directly drives the rotation of grinding wheel, makes the grinding wheel operation more stable and grinding precision higher, and the sand dressing group can obtain different dressing effect through the angle of sand dressing wheel pen adjustment, and its versatility is stronger.

Description

Technical Field

[0001] This utility model relates to the field of milling and grinding equipment, and in particular to a high-precision and high-efficiency integrated milling and grinding machine. Background Technology

[0002] Currently, most milling equipment on the market can only use a single type of cutter head to process the workpiece at a time. For example, when using a roughing cutter head, it can only perform roughing, and when using a finishing cutter head, it can only perform finishing. Prolonged use of a single-function cutter head without changing other cutter heads easily leads to tool wear, short tool life, high tool operating costs, and worn tools affecting the surface finish of the workpiece, resulting in poor surface finish. When a single-function cutter head cannot meet the requirements of high-precision milling, it is necessary to continuously change between roughing and finishing cutter heads during the processing of the same workpiece, resulting in long milling cycles and low milling efficiency. Furthermore, the angle of the dressing pen used in grinding equipment on the market is generally fixed and not adjustable, preventing the dressing of the grinding wheel from different angles, thus resulting in poor versatility and significant limitations in application.

[0003] Furthermore, existing grinding equipment typically uses a motor to indirectly drive the grinding wheel via a synchronous belt and pulley assembly to grind the workpiece. However, after prolonged operation, the synchronous belt and pulley assembly is prone to wear, leading to unstable grinding wheel operation and affecting the grinding accuracy of the wheel, which in turn affects the grinding accuracy of the workpiece. Moreover, existing grinding equipment lacks a structure for measuring the workpiece after grinding, making it impossible to accurately determine the grinding thickness and thus hindering precise control of the grinding accuracy. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a high-precision and high-efficiency integrated milling and grinding machine.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: The high-precision and high-efficiency milling and grinding integrated machine includes a base, a Y-axis lead screw transmission mechanism, a gantry frame, an X-axis lead screw transmission mechanism, a first Z-axis transmission mechanism, and a second Z-axis transmission mechanism. The worktable is longitudinally slidably mounted on the base via the Y-axis lead screw transmission mechanism. The disk is mounted on the worktable. The gantry frame is vertically mounted on the base. The X-axis lead screw transmission mechanism is horizontally mounted on the gantry frame. The first Z-axis transmission mechanism and the second Z-axis transmission mechanism are respectively vertically mounted on the X-axis lead screw transmission mechanism. A grinding wheel electric spindle assembly is horizontally mounted on the first Z-axis transmission mechanism, and the grinding wheel electric spindle assembly is close to the second Z-axis transmission mechanism. One end of the grinding wheel is equipped with a grinding wheel, and the grinding wheel electric spindle assembly directly drives the grinding wheel to rotate for more stable and precise grinding of the workpiece; the second Z-axis transmission mechanism is vertically equipped with a milling spindle box, and a milling spindle servo motor is installed on the top surface of the milling spindle box. The milling spindle box is vertically equipped with a helical gear set that can improve transmission precision and reduce operating noise. The milling spindle servo motor is connected to the milling spindle through the helical gear set. The lower end of the milling spindle is equipped with a multi-layer cutter head assembly that avoids frequent cutter head replacement. The Y-axis lead screw transmission mechanism is equipped with a dressing assembly that can be adjusted to different angles to dress the grinding wheel at different angles and measure the diameter. The dressing assembly is located on the front side of the lower end of the gantry.

[0006] The multi-layer cutter head assembly includes a cutter head body. From the circumferential edge inward, the bottom surface of the cutter head body is equipped with a ring of roughing cutters, a ring of semi-finishing cutters, and a ring of finishing cutters, which can reduce tool wear, shorten the milling time of the workpiece, and improve the surface finish of the workpiece. The height of the ring of roughing cutters, the ring of semi-finishing cutters, and the ring of finishing cutters extending downward along the bottom surface of the cutter head body increases sequentially from the edge of the bottom surface of the cutter head body inward. The milling spindle servo motor drives the ring of finishing cutters, the ring of semi-finishing cutters, and the ring of finishing cutters to rotate sequentially through the helical gear set and the milling spindle to perform milling operations on the workpiece.

[0007] Preferably, the first ring of rough milling cutters is composed of several rough milling cutters arranged at equal intervals, the first ring of semi-finish milling cutters is composed of several semi-finish milling cutters arranged at equal intervals, and the first ring of finish milling cutters is composed of several finish milling cutters arranged at equal intervals. Each rough milling cutter and its adjacent semi-finish milling cutter are staggered, and the distance from each rough milling cutter to the center of the cutter head body is greater than the distance from the adjacent semi-finish milling cutter to the center of the cutter head body.

[0008] Each of the roughing milling cutters includes a roughing insert mounting base, a roughing insert, and a roughing cutter clamping block. The roughing insert is clamped onto the roughing insert mounting base by the roughing cutter clamping block, and the roughing cutter clamping block locks the roughing insert onto the roughing insert mounting base by a first locking screw.

[0009] Each of the semi-finish milling cutters includes a semi-finish milling insert mounting base, a semi-finish milling insert, and a semi-finish milling cutter clamping block. The semi-finish milling insert is clamped onto the semi-finish milling insert mounting base by the semi-finish milling cutter clamping block, and the semi-finish milling cutter clamping block locks the semi-finish milling insert onto the semi-finish milling insert mounting base by a second locking screw.

[0010] Each milling cutter includes a milling insert mount, a milling insert, and a milling cutter clamping block. The milling insert is pressed onto the milling insert mount by the milling cutter clamping block, and the milling cutter clamping block locks the milling insert onto the milling insert mount by a third locking screw.

[0011] Specifically, the height of the semi-finish milling insert is greater than the height of the roughing milling insert, and the height of the finish milling insert is greater than the height of the semi-finish milling insert.

[0012] Preferably, the cutter head body is provided with screw mounting holes, clearance holes, cutter head mounting screw holes and cutter head positioning holes in sequence from the outside to the inside. The cutter head positioning hole is located at the center of the cutter head body. A plurality of screw mounting holes, clearance holes and cutter head mounting screw holes are provided. A plurality of clearance holes are equally spaced within the inner circumference of a ring of precision milling cutters. A plurality of cutter head mounting screw holes are equally spaced outside the circumference of the cutter head positioning hole. The top of the cutter head positioning hole has two recessed downward sides with cutter head positioning grooves that are adapted to fit the positioning blocks on the bottom surface of the milling spindle for positioning the cutter head body.

[0013] Preferably, the grinding wheel electric spindle assembly includes two bearing caps, a grinding wheel spindle housing, a grinding wheel spindle shaft, a motor rotor, a motor stator, angular contact bearings, and a spindle sleeve. The two bearing caps are respectively installed on the same axial direction on two sides of the grinding wheel spindle housing. The grinding wheel spindle shaft is transversely installed in the grinding wheel spindle housing through the two bearing caps. The motor rotor is connected to a power cord connector and is located inside the motor stator. Angular contact bearings are respectively located on both sides of the motor rotor and are respectively fitted onto the grinding wheel spindle shaft. The angular contact bearings on both sides of the motor rotor are respectively fitted onto the grinding wheel spindle shaft through bearing sleeves. The spindle sleeve fits the motor stator, motor rotor, bearing sleeve, and angular contact bearings onto the grinding wheel spindle shaft and is installed in the grinding wheel spindle housing. At least one angular contact bearing is provided on each side of the motor rotor.

[0014] Preferably, the helical gear set includes a helical gear shaft, a bearing, and a helical gear. The helical gear is mounted on the helical gear shaft via the bearing. A gear that meshes with the helical gear is mounted on the output end of the milling spindle servo motor. The milling spindle servo motor drives the helical gear set to rotate via the gear to drive the milling spindle to rotate.

[0015] Preferably, the front side of the grinding wheel electric spindle assembly is equipped with a high-precision measuring component for measuring the workpiece after grinding to obtain a more precise grinding thickness. The high-precision measuring component includes a high-precision servo motor, a ball screw linear module, a first measuring instrument bracket, and a first measuring instrument. The high-precision servo motor is connected to the ball screw linear module for transmission, and the first measuring instrument is mounted on the sliding part of the ball screw linear module in a height-sliding manner through the first measuring instrument bracket.

[0016] Preferably, the sanding assembly includes a main support, a secondary support, an adjustable angle sanding pen holder, a sanding wheel pen, and a second measuring instrument. The main support is mounted on the base via the secondary support. The sanding wheel pen and the second measuring instrument are respectively mounted on the same end of the main support along the same straight line via fixed seats. The sanding wheel pen is mounted on the corresponding fixed seat via the adjustable angle sanding pen holder. The adjustable angle sanding pen holder has an annular mounting hole. The mounting angle between the adjustable angle sanding pen holder and the fixed seat is fixed by bolts through the annular mounting hole. There is one or more annular mounting holes.

[0017] Preferably, a milling measurement assembly is provided on the front side of the milling spindle box. The milling measurement assembly includes a cylinder, a signal sensor on the cylinder, and a cylinder sliding rod connected to the output end of the cylinder. A stainless steel demagnetizing rod is connected and installed at the lower end of the cylinder sliding rod. The cylinder drives the stainless steel demagnetizing rod to move up and down through the cylinder sliding rod, so that the stainless steel demagnetizing rod can be lowered to the surface of the workpiece to measure the milling thickness of the workpiece.

[0018] Preferably, a worktable is mounted on the Y-axis lead screw drive mechanism. The worktable is longitudinally slidable on the base via the Y-axis lead screw drive mechanism, and a disk for clamping the workpiece is mounted on the worktable.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By designing the structures of the multi-layer cutter head group and the helical gear group respectively, the combination of the helical gear group and the multi-layer cutter head group enables the multi-layer cutter head group to complete rough milling, semi-finish milling and finish milling of the workpiece in sequence. The entire milling process of the workpiece does not require changing different cutter heads, thus avoiding wasting time changing cutter heads. The design of the helical gear group not only reduces the noise of the equipment, but also makes the transmission of the multi-layer cutter head group more precise. The surface finish of the workpiece milled by it is high, and it has the advantages of high milling efficiency and high milling accuracy. It solves the problem that the current milling equipment on the market uses a single-function cutter head, which cannot meet the requirements of high-precision milling of workpieces. It requires constantly changing the rough cutter head and the finish cutter head during the processing of the same workpiece, resulting in long milling cycles and low milling efficiency.

[0020] 2. It directly drives the grinding wheel to rotate by setting up an electric spindle assembly to grind the workpiece. Structurally, it does not require a synchronous belt and synchronous pulley assembly to drive the grinding wheel, thus avoiding the grinding effect of the grinding wheel due to the easy wear and tear of the synchronous belt after long-term operation. The grinding wheel is directly driven by the electric spindle assembly, which makes the grinding wheel run more smoothly and the grinding accuracy higher. It effectively solves the problem that the grinding wheel in the existing grinding equipment is generally driven by a motor through a synchronous belt and synchronous pulley assembly, which leads to unstable grinding wheel operation and low grinding accuracy due to the easy wear and tear of the synchronous belt.

[0021] 3. It has a high-precision measuring component installed on the front side of the grinding wheel electric spindle assembly, which can measure the thickness of the workpiece after grinding, so as to accurately obtain the grinding thickness information of the workpiece.

[0022] 4. By providing a dressing assembly on one side of the processing station and designing the structure of the dressing assembly, the dressing pen can be adjusted to change its angle according to different dressing needs. This allows the dressing pen to be adjusted to different angles before dressing the grinding wheel to achieve different dressing effects. It has the advantages of strong versatility and flexible dressing, and effectively solves the problem that the dressing pens used for dressing grinding wheels in the current grinding equipment cannot dress the grinding wheel from different angles, resulting in poor versatility and limited use. Attached Figure Description

[0023] For ease of explanation, the present invention will be described in detail below with reference to the preferred embodiments and accompanying drawings.

[0024] Figure 1 This is a perspective view of the high-precision and high-efficiency milling and grinding integrated machine of this utility model.

[0025] Figure 2 This is a bottom view of the multi-layer cutter head assembly of the high-precision and high-efficiency milling and grinding machine of this utility model.

[0026] Figure 3 This is a perspective view of the multi-layer cutter head assembly of the high-precision and high-efficiency milling and grinding integrated machine of this utility model.

[0027] Figure 4 These are perspective views of the multi-layer cutter head assembly of the high-precision and high-efficiency milling and grinding integrated machine of this utility model from different angles.

[0028] Figure 5 This is a cross-sectional view of the grinding wheel electric spindle assembly and grinding wheel of the high-precision and high-efficiency milling and grinding machine of this utility model.

[0029] Figure 6 This is a three-dimensional view of the assembly of the grinding wheel electric spindle assembly and the grinding wheel in the high-precision and high-efficiency milling and grinding machine of this utility model.

[0030] Figure 7 This is a perspective view of the helical gear set of the high-precision and high-efficiency milling and grinding integrated machine of this utility model.

[0031] Figure 8 This is a perspective view of the high-precision measuring component of the high-precision and high-efficiency milling and grinding integrated machine of this utility model.

[0032] Figure 9 This is a perspective view of the sand-repairing assembly of the high-precision and high-efficiency milling and grinding integrated machine of this utility model. Detailed Implementation

[0033] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0035] Reference Figure 1As shown, the high-precision and high-efficiency milling and grinding integrated machine of this utility model includes a base 1, a Y-axis lead screw transmission mechanism 2, a worktable 3, a disk, a gantry frame 4, an X-axis lead screw transmission mechanism 5, a first Z-axis transmission mechanism 61, and a second Z-axis transmission mechanism 62. The worktable 3 is longitudinally slidably mounted on the base 1 via the Y-axis lead screw transmission mechanism 2. The disk is mounted on the worktable 3. The gantry frame 4 is vertically mounted on the base 1. The X-axis lead screw transmission mechanism 5 is horizontally mounted on the gantry frame 4. The first Z-axis transmission mechanism 61 and the second Z-axis transmission mechanism 62 are respectively vertically mounted on the X-axis lead screw transmission mechanism 5. A grinding wheel electric spindle assembly 7 is horizontally mounted on the first Z-axis transmission mechanism 61. A grinding wheel 8 is mounted on one end of the grinding wheel electric spindle assembly 7 near the second Z-axis transmission mechanism 62. The spindle assembly 7 directly drives the grinding wheel 8 to rotate for smoother and more precise grinding of the workpiece; a milling spindle box 9 is vertically mounted on the second Z-axis transmission mechanism 62, and a milling spindle servo motor 10 is mounted on the top surface of the milling spindle box 9. A helical gear set 11 is vertically arranged inside the milling spindle box 9 to improve transmission precision and reduce operating noise. The milling spindle servo motor 10 drives the milling spindle through the helical gear set 11. A multi-layer cutter head set 12 is mounted at the lower end of the milling spindle to avoid frequent cutter head replacement. A milling measurement assembly 13 is arranged on the front side of the milling spindle box 9. A dressing assembly 14 is arranged on one side of the Y-axis lead screw transmission mechanism 2 to adjust different angles for dressing the grinding wheel 8 at different angles and measuring its diameter. The dressing assembly 14 is located on the front side of the lower end of the gantry 4.

[0036] By adopting the above technical solution, the first Z-axis transmission mechanism 61 and the second Z-axis transmission mechanism 62 can move left and right under the drive of the X-axis lead screw transmission mechanism 5. The grinding wheel electric spindle assembly 7 and the grinding wheel 8 can move up and down under the drive of the first Z-axis transmission mechanism 61, so as to drive the grinding wheel 8 to descend to the workpiece surface to perform grinding on the workpiece and automatically rise and reset after the grinding is completed. The milling spindle servo motor 10, the helical gear set 11, the milling spindle and the multi-layer cutter head assembly 12 can move up and down together under the drive of the second Z-axis transmission mechanism 62, so as to drive the multi-layer cutter head assembly 12 to descend to the workpiece surface to perform milling on the workpiece and automatically rise and reset after the milling is completed. At least one X-axis lead screw transmission mechanism 5 is provided, and different numbers of X-axis lead screw transmission mechanisms 5 can be provided according to the needs of use, so it is not limited to this. When two X-axis lead screw drive mechanisms 5 are installed on the gantry frame 4, the first Z-axis drive mechanism 61 is installed on one of the X-axis lead screw drive mechanisms 5, and the second Z-axis drive mechanism 62 is installed on the other X-axis lead screw drive mechanism 5, so that the two X-axis lead screw drive mechanisms 5 can control the independent lateral displacement of the first Z-axis drive mechanism 61 and the second Z-axis drive mechanism 62 respectively. In this embodiment, the X-axis lead screw drive mechanism 5, the Y-axis lead screw drive mechanism 2, the first Z-axis drive mechanism 61 and the second Z-axis drive mechanism 62 are all configured as ball screw linear modules. The specific structure and working principle of the ball screw linear module are common knowledge and will not be explained in detail here. In other embodiments, the X-axis lead screw drive mechanism 5, the Y-axis lead screw drive mechanism 2, the first Z-axis drive mechanism 61 and the second Z-axis drive mechanism 62 can also be configured as belt-type linear modules, so this is not a limitation.

[0037] Reference Figures 1 to 4 As shown, the multi-layer cutter head assembly 12 includes a cutter head body 121. The bottom surface of the cutter head body 121 is equipped with a ring of rough milling cutters 122, a ring of semi-finish milling cutters 123, and a ring of finish milling cutters 124, which can reduce tool wear, shorten the milling time of the workpiece, and improve the surface finish of the workpiece. The height of the ring of rough milling cutters 122, the ring of semi-finish milling cutters 123, and the ring of finish milling cutters 124 extending downward along the bottom surface of the cutter head body 121 increases sequentially from the edge of the bottom surface of the cutter head body 121 inward. The milling spindle servo motor 10 drives the cutter head body 121 to rotate sequentially through the helical gear set 11 and the milling spindle, thereby driving the ring of finish milling cutters 124, the ring of semi-finish milling cutters 123, and the ring of finish milling cutters 124 to rotate and then perform milling operations on the workpiece in sequence.

[0038] By adopting the above technical solution, when the milling spindle servo motor 10 drives the helical gear set 11 and the milling spindle to rotate in sequence, it can drive the multi-layer cutter head set 12 to rotate. The rotating multi-layer cutter head set 12 can perform rough milling, semi-finish milling and finish milling on the workpiece in sequence through one ring of rough milling cutter 122, one ring of semi-finish milling cutter 123 and one ring of finish milling cutter 124. This enables rough milling, semi-finish milling and finish milling on the workpiece without changing different cutter heads, thereby shortening the entire cycle of workpiece milling and greatly improving the efficiency of workpiece milling. It solves the problem that the current milling equipment on the market uses a single function / specification cutter head, which cannot meet the requirements of high-precision milling of workpieces. It requires the continuous replacement of rough cutter head and finish cutter head during the processing of the same workpiece, resulting in long milling cycle and low milling efficiency.

[0039] Reference Figure 2 As shown, the ring of rough milling cutters 122 is composed of several rough milling cutters 122 arranged at equal intervals, the ring of semi-finish milling cutters 123 is composed of several semi-finish milling cutters 123 arranged at equal intervals, and the ring of finish milling cutters 124 is composed of several finish milling cutters 124 arranged at equal intervals. Each rough milling cutter 122 and its adjacent semi-finish milling cutter 123 are staggered, and the distance from each rough milling cutter 122 to the center of the cutter head body 121 is greater than the distance from the adjacent semi-finish milling cutter 123 to the center of the cutter head body 121. The distance between each semi-finish milling cutter 123 and its adjacent finish milling cutter 124 is staggered, and the distance from each semi-finish milling cutter 123 to the center of the cutter head body 121 is greater than the distance from the adjacent finish milling cutter 124 to the center of the cutter head body 121. The above design enables the entire milling process of the workpiece to be completed by one round of rough milling cutter 122, one round of semi-finish milling cutter 123 and one round of finish milling cutter 124 in turn, so as to avoid the phenomenon of tool wear that is easy to occur when milling is completed by a single tool.

[0040] Reference Figures 2 to 3As shown, each roughing milling cutter 122 includes a roughing insert mounting base 1221, a roughing insert 1222, and a roughing cutter clamping block 1223. The roughing insert 1222 is pressed onto the roughing insert mounting base 1221 by the roughing cutter clamping block 1223, and the roughing cutter clamping block 1223 locks the roughing insert 1222 onto the roughing insert mounting base 1221 by a first locking screw 1224. Each semi-finishing milling cutter 123 includes a semi-finishing insert mounting base 1231, a semi-finishing insert 1232, and a semi-finishing cutter clamping block 1233. The semi-finishing insert 1232 is pressed onto the semi-finishing insert mounting base 1231 by the semi-finishing cutter clamping block 1233, and the semi-finishing cutter clamping block 1233 locks the semi-finishing insert 1232 onto the semi-finishing insert mounting base 1231 by a second locking screw 1234. Each finish milling cutter 124 includes a finish milling insert mounting base 1241, a finish milling insert 1242, and a finish milling cutter clamping block 1243. The finish milling insert 1242 is pressed onto the finish milling insert mounting base 1241 by the finish milling cutter clamping block 1243, and the finish milling cutter clamping block 1243 locks the finish milling insert 1242 onto the finish milling insert mounting base 1241 by a third locking screw 1244. The height of the semi-finish milling insert 1232 is greater than the height of the roughing insert 1222, and the height of the finish milling insert 1242 is greater than the height of the semi-finish milling insert 1232.

[0041] By adopting the above technical solution, the rough milling cutter 122, the semi-finish milling cutter 123, and the finish milling cutter 124 can perform milling operations on the workpiece sequentially as the cutter head body 121 rotates. That is, after the rough milling cutter 122 completes the rough milling operation on the workpiece, the semi-finish milling cutter 123 begins the semi-finish milling operation on the workpiece. After the semi-finish milling cutter 123 completes the semi-finish milling operation on the workpiece, the finish milling cutter 124 begins the finish milling operation on the workpiece. The method of using the rough milling cutter 122, the semi-finish milling cutter 123, and the finish milling cutter 124 to perform milling operations on the workpiece in turn avoids the problem of only using a single cutter to process the workpiece. This reduces the wear of a single cutter, extends the service life of the cutter, and reduces the cost of using the cutter. In this way, it solves the problem that current milling equipment on the market generally uses a single cutter to process the workpiece, which leads to easy wear of the cutter, short service life of the cutter, and high cost of using the cutter.

[0042] Reference Figures 2 to 4As shown, the cutter head body 121 is provided with screw mounting holes 125, clearance holes 126, cutter head mounting screw holes 127 and cutter head positioning holes 128 in sequence from the outside to the inside. The cutter head positioning hole 128 is located at the center of the cutter head body 121. A plurality of screw mounting holes 125, clearance holes 126 and cutter head mounting screw holes 127 are provided. A plurality of clearance holes 126 are equally spaced within the inner circumference of a ring of milling cutters 124. A plurality of cutter head mounting screw holes 127 are equally spaced outside the circumference of the cutter head positioning hole 128. The top two sides of the cutter head positioning hole 128 are recessed downwards and provided with cutter head positioning grooves 129, which are adapted to the positioning blocks on the bottom surface of the milling spindle to position the cutter head body 121 for installation.

[0043] By adopting the above technical solution, the screw mounting hole 125 is used for the installation of the corresponding first locking screw 1224, second locking screw 1234, and third locking screw 1244. The clearance hole 126 is designed to reduce the vibration of the multi-layer cutter head assembly 12 during operation, making the multi-layer cutter head assembly 12 more stable and improving the milling accuracy of the multi-layer cutter head assembly 12. At the same time, the clearance hole 126 can also allow the milling measurement component 13 to pass through to detect the milling thickness of the workpiece after milling. The cutter head mounting screw hole 127 is used to screw the cutter head body 121 to the milling spindle for fixed installation. The cutter head positioning hole 128 is used to fit the center of the milling spindle for installation, ensuring that the cutter head body 121 and the milling spindle are accurately aligned and positioned, with high installation efficiency and high installation accuracy.

[0044] Reference Figure 5 and Figure 6 As shown, the grinding wheel electric spindle assembly 7 includes two bearing caps 70, a grinding wheel spindle housing 71, a grinding wheel spindle shaft 72, a motor rotor 73, a motor stator 74, angular contact bearings 75, and a spindle sleeve 76. The two bearing caps 70 are respectively installed on the same axial direction on two sides of the grinding wheel spindle housing 71. The grinding wheel spindle shaft 72 is horizontally installed in the grinding wheel spindle housing 71 through the two bearing caps 70. The motor rotor 73 is connected to an external power source through a power cord connector 77 and is housed within the motor stator 74. Angular contact bearings 75 are respectively disposed on both sides of the motor rotor 73 and the angular contact bearings 75 and the motor rotor 73 are respectively mounted on the grinding wheel spindle shaft 72. The angular contact bearings 75 on both sides of the motor rotor 73 are respectively fitted onto the grinding wheel spindle shaft 72 through bearing sleeves 78. The spindle sleeve 76 mounts the motor stator 74, the motor rotor 73, the bearing sleeve 78 and the angular contact bearings 75 onto the grinding wheel spindle shaft 72 and installs them inside the grinding wheel spindle housing 71. At least one angular contact bearing 75 is provided on each side of the motor rotor 73.

[0045] By adopting the above technical solution, the two bearing caps 70 respectively press and install the corresponding angular contact bearings 75 on both sides of the motor rotor 73 to ensure the stable operation of the motor rotor 73. It directly drives the grinding wheel 8 to rotate through the grinding wheel electric spindle assembly 7, so that torque is directly output to the grinding wheel 8. This makes the grinding wheel 8 run more smoothly and the grinding accuracy of the workpiece higher. It avoids the problem of synchronous belt wear that is easily caused by using a synchronous belt and synchronous pulley assembly for driving, thus solving the problem that in existing grinding equipment, the grinding wheel 8 is generally driven by a motor through a synchronous belt and synchronous pulley assembly, which leads to unstable operation of the grinding wheel 8 and low grinding accuracy due to the easy wear of the synchronous belt.

[0046] Reference Figure 7 As shown, the helical gear set 11 includes a helical gear shaft 111, a bearing 112, and a helical gear 113. The helical gear 113 is mounted on the helical gear shaft 111 through the bearing 112. A gear that meshes with the helical gear 113 is mounted on the output end of the milling spindle servo motor 10. The milling spindle servo motor 10 drives the helical gear set 11 to rotate through the gear to drive the milling spindle to rotate.

[0047] By adopting the above technical solution, the structural design of the helical gear set 11 can change the speed and torque, making the transmission smoother. This not only makes the transmission more precise, but also reduces vibration and noise, and improves the load-bearing capacity to transmit greater power. This makes the milling spindle and multi-layer cutter head set 12 run more smoothly and the multi-layer cutter head set 12 more accurate in milling the workpiece.

[0048] Reference Figure 1 and Figure 8 As shown, the front side of the grinding wheel electric spindle assembly 7 is equipped with a high-precision measuring component 15 for measuring the workpiece after grinding to obtain a more precise grinding thickness. The high-precision measuring component 15 includes a high-precision servo motor 151, a ball screw linear module 152, a measuring instrument bracket 153, and a first measuring instrument 154. The high-precision servo motor 151 is connected to the ball screw linear module 152 for transmission. The first measuring instrument 154 is mounted on the sliding part of the ball screw linear module 152 in a height-sliding manner through the measuring instrument bracket 153.

[0049] By adopting the above technical solution, the high-precision servo motor 151 drives the measuring instrument bracket 153 to move up and down via the ball screw linear module 152, so that the first measuring instrument 154 is lowered to the surface of the workpiece after grinding as the measuring instrument bracket 153 moves down to obtain a more precise grinding thickness. In this embodiment, the first measuring instrument 154 is a tool setter. The specific structure and working principle of the tool setter are common knowledge and will not be explained in detail here.

[0050] Reference Figure 9As shown, the sanding assembly 14 includes a main support 141, a secondary support 142, an adjustable angle sanding pen holder 143, a sanding wheel pen 144, and a second measuring instrument 145. The main support 141 is mounted on the base 1 via the secondary support 142. The sanding wheel pen 144 and the second measuring instrument 145 are respectively mounted on the same end of the main support 141 via fixed seats 146 and along the same straight line. The sanding wheel pen 144 is mounted on the corresponding fixed seat 146 via the adjustable angle sanding pen holder 143. The adjustable angle sanding pen holder 143 has an annular mounting hole 147. The annular mounting hole 147 is fixed to the mounting angle between the adjustable angle sanding pen holder 143 and the fixed seat 146 by bolts 148. There is one or more annular mounting holes 147. In this embodiment, the second measuring instrument 145 is a tool setter. The working principles of the sanding wheel pen 144 and the tool setter are common knowledge and will not be explained in detail here.

[0051] By adopting the above technical solution, the second measuring instrument 145 is used to measure the diameter of the grinding wheel 8. It has an annular mounting hole 147 on the adjustable angle dressing pen holder 143. Since the bolt 148 can slide freely within the annular mounting hole 147, it can pass through different positions within the annular mounting hole 147 and be fixedly installed with the fixed seat 146. This allows for adjustment of the angle of the dressing pen 144 on the fixed seat 146 according to different dressing needs of the grinding wheel 8. This enables the dressing pen 144 to be adjusted to different angles before dressing the grinding wheel 8, thus achieving different dressing effects. It also has the advantages of strong passability and flexible operation. It effectively solves the problem that the dressing pen 144 used in existing grinding equipment cannot dress the grinding wheel 8 from different angles, resulting in poor versatility and limited use.

[0052] Reference Figures 1 to 9As shown, the workflow of this high-precision and high-efficiency milling and grinding machine is as follows: The workpiece to be processed is first placed on the disk on the worktable 3. The Y-axis lead screw transmission mechanism 2 drives the worktable 3 to move directly below the grinding wheel 8 and the multi-layer cutter head assembly 12. The grinding wheel 8 and the multi-layer cutter head assembly 12 can be laterally adjusted to their position relative to the workpiece through the X-axis lead screw transmission mechanism 5. When the X-axis lead screw transmission mechanism 5 drives the grinding wheel 8 to the position where the workpiece needs to be ground, the first Z-axis transmission mechanism 61 drives the grinding wheel 8 to move down to the surface of the workpiece. At the same time, the grinding wheel electric spindle assembly 7 directly drives the grinding wheel 8 to rotate to grind the workpiece. The high-precision measurement assembly 15 measures the completed grinding wheel rotation. The grinding thickness of the workpiece is measured. When the Y-axis lead screw transmission mechanism 2 drives the multi-layer cutter head assembly 12 to move to the position of the workpiece to be milled, the second Z-axis transmission mechanism 62 drives the multi-layer cutter head assembly 12 to move down to the surface of the workpiece. The multi-layer cutter head assembly 12 rotates under the drive of the milling spindle servo motor 10 and can successively complete rough milling, semi-finish milling and finish milling of the workpiece. Moreover, it does not require changing different cutter heads during the rough milling, semi-finish milling and finish milling process, avoiding the waste of time to change different cutter heads during the milling process of the workpiece, which greatly improves the milling efficiency and milling accuracy of the workpiece.

[0053] The above embodiments are merely examples of this utility model and are not intended to limit the implementation and scope of this utility model. All technical solutions that are the same as or equivalent to the contents described in the claims of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-precision and high-efficiency milling and grinding integrated machine, comprising a base, a Y-axis lead screw drive mechanism, a gantry frame, an X-axis lead screw drive mechanism, a first Z-axis drive mechanism, and a second Z-axis drive mechanism. The Y-axis lead screw drive mechanism is longitudinally mounted on the base, the gantry frame is vertically mounted on the base, the X-axis lead screw drive mechanism is transversely mounted on the gantry frame, and the first Z-axis drive mechanism and the second Z-axis drive mechanism are respectively vertically mounted on the X-axis lead screw drive mechanism. Its features are: The first Z-axis transmission mechanism is horizontally equipped with a grinding wheel electric spindle assembly. A grinding wheel is mounted on one end of the grinding wheel electric spindle assembly near the second Z-axis transmission mechanism. The grinding wheel electric spindle assembly directly drives the grinding wheel to rotate, so as to perform more stable and precise grinding on the workpiece. The second Z-axis transmission mechanism is vertically equipped with a milling spindle box. A milling spindle servo motor is mounted on the top surface of the milling spindle box. A helical gear set is vertically arranged inside the milling spindle box to improve transmission precision and reduce operating noise. The milling spindle servo motor is connected to the milling spindle through the helical gear set. A multi-layer cutter head assembly is installed at the lower end of the milling spindle to avoid frequent cutter head replacement. A dressing assembly is set on one side of the Y-axis lead screw transmission mechanism, which can be adjusted to different angles to perform different angle dressing and diameter measurement of the grinding wheel. The dressing assembly is located on the front side of the lower end of the gantry. The multi-layer cutter head assembly includes a cutter head body. From the circumferential edge inward, the bottom surface of the cutter head body is equipped with a ring of roughing cutters, a ring of semi-finishing cutters, and a ring of finishing cutters, which can reduce tool wear, shorten the milling time of the workpiece, and improve the surface finish of the workpiece. The height of the ring of roughing cutters, the ring of semi-finishing cutters, and the ring of finishing cutters extending downward along the bottom surface of the cutter head body increases sequentially from the edge of the bottom surface of the cutter head body inward. The milling spindle servo motor drives the ring of finishing cutters, the ring of semi-finishing cutters, and the ring of finishing cutters to rotate sequentially through the helical gear set and the milling spindle to perform milling operations on the workpiece.

2. The high-precision and high-efficiency milling and grinding integrated machine according to claim 1, characterized in that: The first ring of rough milling cutters is composed of several rough milling cutters arranged at equal intervals, the first ring of semi-finish milling cutters is composed of several semi-finish milling cutters arranged at equal intervals, and the first ring of finish milling cutters is composed of several finish milling cutters arranged at equal intervals. Each rough milling cutter and its adjacent semi-finish milling cutter are staggered, and the distance from each rough milling cutter to the center of the cutter head body is greater than the distance from the adjacent semi-finish milling cutter to the center of the cutter head body. Each of the roughing milling cutters includes a roughing insert mounting base, a roughing insert, and a roughing cutter clamping block. The roughing insert is clamped onto the roughing insert mounting base by the roughing cutter clamping block, and the roughing cutter clamping block locks the roughing insert onto the roughing insert mounting base by a first locking screw. Each of the semi-finish milling cutters includes a semi-finish milling insert mounting base, a semi-finish milling insert, and a semi-finish milling cutter clamping block. The semi-finish milling insert is clamped onto the semi-finish milling insert mounting base by the semi-finish milling cutter clamping block, and the semi-finish milling cutter clamping block locks the semi-finish milling insert onto the semi-finish milling insert mounting base by a second locking screw. Each milling cutter includes a milling insert mount, a milling insert, and a milling cutter clamping block. The milling insert is pressed onto the milling insert mount by the milling cutter clamping block, and the milling cutter clamping block locks the milling insert onto the milling insert mount by a third locking screw.

3. The high-precision and high-efficiency milling and grinding integrated machine according to claim 2, characterized in that: The height of the semi-finish milling insert is greater than the height of the roughing milling insert, and the height of the finish milling insert is greater than the height of the semi-finish milling insert.

4. The high-precision and high-efficiency milling and grinding integrated machine according to claim 1, characterized in that: The cutter head body is provided with screw mounting holes, clearance holes, cutter head mounting screw holes and cutter head positioning holes in sequence from the outside to the inside. The cutter head positioning hole is located at the center of the cutter head body. There are several screw mounting holes, clearance holes and cutter head mounting screw holes. Several clearance holes are equally spaced within the inner circumference of a precision milling cutter. Several cutter head mounting screw holes are equally spaced outside the circumference of the cutter head positioning hole. The top of the cutter head positioning hole has two recessed downward sides with cutter head positioning grooves that are adapted to the positioning blocks on the bottom surface of the milling spindle to position the cutter head body.

5. The high-precision and high-efficiency milling and grinding integrated machine according to claim 1, characterized in that: The grinding wheel electric spindle assembly includes two bearing caps, a grinding wheel spindle housing, a grinding wheel spindle shaft, a motor rotor, a motor stator, angular contact bearings, and a spindle sleeve. The two bearing caps are respectively installed on the same axial direction on two sides of the grinding wheel spindle housing. The grinding wheel spindle shaft is horizontally installed in the grinding wheel spindle housing through the two bearing caps. The motor rotor is connected to a power cord connector and is located inside the motor stator. Angular contact bearings are respectively located on both sides of the motor rotor and are respectively fitted onto the grinding wheel spindle shaft. The angular contact bearings on both sides of the motor rotor are respectively fitted onto the grinding wheel spindle shaft through bearing sleeves. The spindle sleeve fits the motor stator, motor rotor, bearing sleeve, and angular contact bearings onto the grinding wheel spindle shaft and is installed in the grinding wheel spindle housing. At least one angular contact bearing is provided on each side of the motor rotor.

6. The high-precision and high-efficiency milling and grinding integrated machine according to claim 1, characterized in that: The helical gear set includes a helical gear shaft, bearings, and helical gears. The helical gears are mounted on the helical gear shaft via the bearings. A gear that meshes with the helical gears is mounted on the output end of the milling spindle servo motor. The milling spindle servo motor drives the helical gear set to rotate via the gears, thereby driving the milling spindle to rotate.

7. The high-precision and high-efficiency milling and grinding integrated machine according to claim 1, characterized in that: The front side of the grinding wheel electric spindle assembly is equipped with a high-precision measuring component for measuring the workpiece after grinding to obtain a more precise grinding thickness. The high-precision measuring component includes a high-precision servo motor, a ball screw linear module, a first measuring instrument bracket, and a first measuring instrument. The high-precision servo motor is connected to the ball screw linear module for transmission. The first measuring instrument is mounted on the sliding part of the ball screw linear module in a height-sliding manner through the first measuring instrument bracket.

8. The high-precision and high-efficiency milling and grinding integrated machine according to claim 1, characterized in that: The sanding assembly includes a main support, a secondary support, an adjustable angle sanding pen holder, a sanding wheel pen, and a second measuring instrument. The main support is mounted on the base via the secondary support. The sanding wheel pen and the second measuring instrument are respectively mounted on the same end of the main support along the same straight line via fixed seats. The sanding wheel pen is mounted on the corresponding fixed seat via the adjustable angle sanding pen holder. The adjustable angle sanding pen holder has an annular mounting hole. The mounting angle between the adjustable angle sanding pen holder and the fixed seat is fixed by bolts through the annular mounting hole. There is one or more annular mounting holes.

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