Gantry moving ram type composite surface grinding machine structure

Abstract

A gantry moving ram type composite surface grinding machine structure comprises a machine body, a portal frame horizontally and longitudinally installed at the upper end of the machine body in a sliding mode, a ram mechanism arranged on the portal frame and installed in a vertical sliding mode through a ram and the center of the portal frame, and a grinding head assembly installed at the bottom of the ram in a modularized mode. The workbench is arranged on the lathe bed and is positioned below the grinding head assembly; the grinding head assembly comprises a vertical shaft plane grinding head assembly, a vertical shaft round surface grinding head assembly and a horizontal shaft grinding head assembly; the length of a production line is effectively shortened through a narrow structure mode of longitudinally and slidably arranging the portal frame; the unbalance loading force generated in the working process of the grinding head assembly is effectively reduced in the mode that the portal frame double rails are slidably installed on the lathe bed, the ram is vertically slidably installed in the center of the portal frame, and the grinding head assembly is directly and fixedly installed at the bottom of the ram. The grinding head assembly and the ram are installed in a modularized mode, and switching between the vertical shaft structure form and the horizontal shaft structure form is achieved.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, and in particular to a gantry-moving ram-type composite surface grinder structure. Background Technology

[0002] Grinding machines are a commonly used machine tool in industrial production. Their role in the production line is mainly reflected in improving machining accuracy, increasing production efficiency, extending tool life, and promoting technological innovation.

[0003] However, grinding machines currently on the market often have the following problems when used as a process in a production line:

[0004] 1. Current surface grinders, whether vertical or horizontal spindle, typically employ a wide-body structure, meaning the horizontal drive mechanism of the grinding head assembly is transverse rather than longitudinal, as disclosed in Reference 1 (Chinese Invention Patent No. CN115446710B, entitled "An Intelligent Vertical Grinding Machine with Vertical Interlock Protection Function"). However, current surface grinders in production lines are usually arranged laterally for ease of loading and unloading (as shown in the attached document). Figure 1 As shown in the figure, this leads to the problem that wide-body surface grinders occupy a large area, which in turn increases the length of the production line. This not only causes layout problems in the limited factory space, but also increases construction costs (such as the cost caused by the adaptive length of the robotic arm automatic loading and unloading track).

[0005] 2. In current surface grinders, the grinding head assembly is mostly mounted on the horizontal and vertical drive mechanisms in an off-center manner. That is, the grinding head assembly is mounted on the sliding frame of the vertical drive mechanism, and the vertical drive mechanism is mounted on the moving frame of the horizontal drive mechanism, as shown in the technical solution disclosed in the aforementioned comparative document 1 (the surface treatment device 5 is mounted on the vertical grinding frame slide 43 of the emergency braking device 4, and the emergency braking device 4 is mounted on the moving frame 31 of the machine body 3). This off-center mounting method not only causes a large off-center load on the horizontal and vertical drive mechanisms, but also affects the machining accuracy of the grinding head assembly.

[0006] 3. Existing surface grinders typically only have one structural configuration on both vertical and horizontal spindles. This means that when building a production line, it is necessary to equip it with both vertical and horizontal spindle surface grinders to meet the processing needs of different workpieces, which greatly increases the space occupied and the cost.

[0007] Therefore, it is necessary to invent a simple and practical composite surface grinder structure with a narrow body structure that can minimize the off-center load on the horizontal and vertical drive mechanisms and enable switching between vertical and horizontal spindle structures. Utility Model Content

[0008] To address the problems in the background technology, this utility model provides a gantry-type moving ram composite surface grinder structure, the specific technical solution of which is as follows:

[0009] A gantry-moving ram-type composite surface grinder structure, characterized in that it includes a bed, a gantry frame horizontally and longitudinally slidably mounted on the upper part of the bed, a ram mechanism disposed on the gantry frame and vertically slidably mounted to the center of the gantry frame via a ram, a grinding head assembly modularly mounted to the bottom of the ram, and a worktable mounted on the bed and located below the grinding head assembly;

[0010] The grinding head assembly includes a vertical spindle planar grinding head assembly, a vertical spindle circular grinding head assembly, and a horizontal spindle grinding head assembly, and one of the vertical spindle planar grinding head assembly, vertical spindle circular grinding head assembly, and horizontal spindle grinding head assembly is modularly installed with the bottom of the slide block according to the working requirements;

[0011] The worktable is a circular worktable and / or a rectangular worktable.

[0012] Furthermore, the gantry frame includes a gantry drive assembly, a receiving plate, and a guide block, which are fixedly installed from bottom to top; the gantry drive assembly includes a drive plate, a drive cylinder, and a support base; the drive cylinder is fixedly installed on the bed through the support base; the drive plate is slidably installed on the upper end of the bed through a slide rail assembly and is driven by the drive cylinder.

[0013] The slide mechanism also includes an electric lead screw assembly, which is fixedly installed with the slide, and the slider on the electric lead screw assembly is fixedly installed with the receiving plate; the slide is slidably installed with the guide block and can slide up and down through the drive plate and the receiving plate under the drive of the electric lead screw assembly.

[0014] Furthermore, the vertical shaft surface grinding head assembly includes a main shaft, a grinding head chuck body coaxially fixedly mounted on the lower end of the main shaft, abrasive pads evenly distributed on the grinding head chuck body, and a housing component that is hermetically and rotatably mounted with the main shaft; the ram has a hollow structure; the ram mechanism also includes a motor fixedly mounted on the top of the ram, and a transmission shaft disposed inside the ram and connected at its top end to the output end of the motor; the housing component is fixedly mounted to the bottom of the ram, and the main shaft and the transmission shaft are connected when the housing component is installed on the ram.

[0015] Furthermore, the housing component includes flange one, housing one, and flange two, which are fixedly connected from bottom to top; the vertical shaft surface grinding head assembly also includes a roller bearing disposed between housing one and the main shaft, a thrust ball bearing located between housing one and the bottom of the main shaft, a positioning cover sleeved on the main shaft and rotatably connected to the upper end of housing one through another thrust ball bearing, a spring cover sleeved on the main shaft and elastically connected to the upper end of the positioning cover through several springs, and a locking nut threaded to the main shaft for pressing the spring cover.

[0016] Furthermore, the vertical shaft circular grinding head assembly includes a housing two fixedly connected to the bottom of the slide, a motor one vertically fixedly installed inside the housing two, and a grinding wheel one installed at the output end of the motor one.

[0017] Furthermore, the horizontal spindle grinding head assembly includes a housing three fixedly connected to the bottom of the slide, a motor two horizontally fixedly installed inside the housing three, and a grinding wheel two installed at the output end of the motor two.

[0018] Furthermore, the circular worktable includes a mounting platform mounted on the bed via a fixing frame, a second motor fixedly mounted on the bottom of the mounting platform, a turntable rotatably mounted on the top of the mounting platform, and a second transmission shaft that is installed through the inside of the mounting platform and has one end fixedly connected to the output end of the second motor and the other end fixedly connected to the turntable.

[0019] Furthermore, the turntable and rectangular worktable use electromagnetic structures or disc structures to fix the workpiece.

[0020] Furthermore, a coolant tank is provided at the bottom of the bed corresponding to the worktable.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] 1. This utility model effectively shortens the length of the production line and further reduces the construction cost of the production line by using a narrow-body structure for the gantry frame that slides longitudinally.

[0023] 2. This utility model replaces the current off-center mounting method in surface grinders, where the grinding head assembly is mounted on the vertical drive mechanism and the vertical drive mechanism is mounted on the horizontal drive mechanism, by sliding the gantry frame on the bed with double rails, vertically sliding the ram on the center of the gantry frame, and directly fixing the grinding head assembly to the bottom of the ram. This effectively reduces the off-center load generated by the grinding head assembly during operation and further improves the machining accuracy.

[0024] 3. This utility model achieves the switching between vertical and horizontal spindle structures by modularly installing the grinding head assembly and the slide, effectively improving the mobility and utilization rate of the grinding machine, and further reducing space occupation and cost. Attached Figure Description

[0025] Figure 1-4 This is a schematic diagram of the overall assembly structure of Embodiment 1 of this utility model.

[0026] Figure 5 This utility model Figure 2 A schematic diagram of the cross-sectional structure along the AA direction.

[0027] Figure 6 This utility model Figure 3 A schematic diagram of the cross-sectional structure along the BB direction.

[0028] Figure 7 This is a schematic diagram of the assembly structure of the gantry frame of this utility model.

[0029] Figure 8 This is a schematic diagram of the exploded assembly structure of the gantry frame of this utility model.

[0030] Figure 9 This is an exploded assembly diagram of the slide ram mechanism and vertical shaft plane grinding head assembly of this utility model.

[0031] Figure 10-11 This is a schematic diagram of the assembly structure of the vertical shaft surface grinding head assembly of this utility model.

[0032] Figure 12 This utility model Figure 11 A schematic diagram of the cross-sectional structure along the CC direction.

[0033] Figure 13 This utility model Figure 12 A magnified schematic diagram of the structure at point E in the middle.

[0034] Figure 14 This is an exploded assembly diagram of the vertical shaft surface grinding head assembly of this utility model.

[0035] Figure 15 This is a schematic diagram of the assembly structure of the vertical shaft circular surface grinding head assembly of this utility model.

[0036] Figure 16 This is a schematic diagram of the assembly structure of the horizontal shaft grinding head assembly of this utility model.

[0037] Figure 17 This utility model Figure 5 A magnified schematic diagram of the structure at point F in the middle.

[0038] Figure 18 This is a schematic diagram of the overall assembly structure of Embodiment 2 of this utility model.

[0039] Figure 19 This is a schematic diagram of the overall assembly structure of Embodiment 3 of this utility model.

[0040] Figure 20 This utility model Figure 19 A schematic diagram of the cross-sectional structure along the DD direction.

[0041] Figure 21 This is a schematic diagram of the overall assembly structure of Embodiment 4 of this utility model.

[0042] In the picture:

[0043] 1-Bed body;

[0044] 2-Gantry frame;

[0045] 21-Slide rail assembly (2101-Slide rail; 2102-Limit plate); 22-Gantry drive assembly (2201-Drive plate; 2202-Drive cylinder; 2203-Support base); 23-Receiving plate (2301-Mounting hole); 24-Guide block;

[0046] 3-Slide mechanism;

[0047] 31-Slide ram; 32-Electric lead screw assembly (3201-Slider); 33-Motor 1; 34-Drive shaft 1;

[0048] 41-Vertical spindle surface grinding head assembly (4101-Spindle; 4102-Grinding head chuck body; 4103-Abrasive bearing; 4104-Housing housing one; 4105-Roller bearing; 4106-Flange one; 4107-Flange two; 4108-Thrust ball bearing; 4109-Positioning gland; 4110-Spring gland; 4111-Locking nut; 4112-Spring); 42-Vertical spindle circular grinding head assembly (4201-Housing housing two; 4202-Grinding wheel one; 4203-Motor one); 43-Horizontal spindle grinding head assembly (4301-Housing housing three; 4302-Grinding wheel two; 4303-Motor two);

[0049] 51-Circular worktable (5101-Fixed frame; 5102-Mounting platform; 5103-Turntable; 5104-Motor II; 5105-Drive shaft II); 52-Rectangular worktable;

[0050] 6-Coolant tank. Detailed Implementation

[0051] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention. Example 1:

[0052] like Figure 1-5 As shown, a gantry-type composite surface grinder structure includes a bed 1, a gantry frame 2 horizontally and longitudinally slidably mounted on the upper end of the bed 1, a ram mechanism 3 mounted on the gantry frame 2 and vertically slidably mounted to the center of the gantry frame 2 via a ram 31, a grinding head assembly modularly mounted to the bottom of the ram 31, a worktable mounted on the bed 1 and located below the grinding head assembly, and a coolant tank 6 located at the bottom of the bed 1 corresponding to the worktable position (it should be noted that the spray head pipeline and recovery pipeline in the coolant tank 6 are installed corresponding to the worktable; the specific installation and operation methods are existing technologies and will not be described in detail here).

[0053] like Figure 10 As shown, in this embodiment, the grinding head assembly is a vertical spindle plane grinding head assembly 41, and the worktable is a circular worktable 51.

[0054] Specifically, such as Figure 6-8 As shown, the gantry frame 2 includes a gantry drive assembly 22, a receiving plate 23, and a guide block 24, which are fixedly installed from bottom to top. The gantry drive assembly 22 includes a drive plate 2201, a drive cylinder 2202, and a support base 2203. The drive cylinder 2202 is fixedly installed on the bed 1 through the support base 2203. The drive plate 2201 is slidably installed on the upper end of the bed 1 through the slide rail assembly 21 and is driven by the drive cylinder 2202. In this embodiment, the drive cylinder 2202 is a single-stage servo hydraulic cylinder or a servo screw. The slide rail assembly 21 includes two slide rails 2101 laid parallel to each other on the upper end of the bed 1, and a limiting plate 2102 installed on both sides of the drive plate 2201 and connected to the slide rails 2101. The center of the drive plate 2201 and the receiving plate 23 are respectively provided with through holes, and the receiving plate 23 is provided with a mounting hole 2301 on one side of the through hole. The drive plate 2201 is provided with a clearance hole corresponding to the mounting hole 2301.

[0055] like Figure 6 and 9 As shown, the slide mechanism 3 also includes an electric screw assembly 32, which is fixedly installed to the slide 31 via a connecting lug. The slider 3201 on the electric screw assembly 32 is fixedly installed in the mounting hole 2301 of the receiving plate 23. The slide 31 is slidably fitted with the guide block 24. When the screw in the electric screw assembly 32 rotates, since the slider 3201 is fixed, the electric screw assembly 32 slides up and down relative to the gantry 2 when the slider 3201 is stationary. Thus, the slide 31 can slide up and down through the drive plate 2201 and the receiving plate 23 under the drive of the electric screw assembly 32.

[0056] Specifically, such as Figure 10-14As shown, the vertical spindle surface grinding head assembly 41 includes a spindle 4101, a grinding head chuck body 4102 coaxially fixedly mounted on the lower end of the spindle 4101, abrasive pads 4103 evenly distributed on the grinding head chuck body 4102, and a housing component that is sealed and rotated with the spindle 4101; the slide 31 has a hollow structure; the slide mechanism 3 also includes a motor 33 fixedly mounted on the top of the slide 31, and a transmission shaft 34 disposed inside the slide 31 and connected at its top end to the output end of the motor 33; the housing component is fixedly mounted to the bottom of the slide 31, and the spindle 4101 and the transmission shaft 34 are connected when the housing component is installed with the slide 31;

[0057] The housing components include flange 4106, housing 4104, and flange 4107, which are fixedly connected from bottom to top. The vertical spindle surface grinding head assembly 41 also includes a roller bearing 4105 disposed between housing 4104 and spindle 4101, a thrust ball bearing 4108 located between housing 4104 and the bottom of spindle 4101, a positioning cover 4109 sleeved on spindle 4101 and rotatably connected to the upper end of housing 4104 via another thrust ball bearing 4108, and a spring sleeved on spindle 4101 and elastically connected to the upper end of positioning cover 4109 via several springs 4112. The spring cover 4110 and the locking nut 4111 threadedly connected to the main shaft 4101 for pressing the spring cover 4110; In this embodiment, in order to prevent the spring cover 4110 from loosening during the high-speed rotation of the main shaft 4101, the two locking nuts 4111 are tightened together, and self-locking is achieved through mutual friction, which enhances the reliability of the connection and achieves the effect of preventing loosening; Thus, under the action of the double locking nuts 4111, the spring cover 4110 presses the positioning cover 4109 through the spring 4112, thereby rotating and pressing the housing part onto the main shaft 4101.

[0058] Specifically, such as Figure 17 As shown, the circular worktable 51 includes a mounting platform 5102 mounted on the bed 1 via a fixing bracket 5101, a motor 5104 fixedly mounted on the bottom of the mounting platform 5102, a turntable 5103 rotatably mounted on the top of the mounting platform 5102, and a transmission shaft 5105 that passes through the interior of the mounting platform 5102 and is fixedly connected at one end to the output end of the motor 5104 and at the other end to the turntable 5103. In this embodiment, the turntable 5103 uses an electromagnetic structure to fix the workpiece. Example 2:

[0059] The difference between this embodiment and Embodiment 1 is that: Figure 15 and 18 As shown, the vertical spindle surface grinding head assembly 41 mounted on the bottom of the slide 31 is replaced with a vertical spindle circular surface grinding head assembly 42; the details are as follows:

[0060] The vertical spindle circular grinding head assembly 42 includes a housing 4201 fixedly connected to the bottom of the slide 31, a motor 4203 vertically fixedly installed inside the housing 4201, and a grinding wheel 4202 installed at the output end of the motor 4203. It should be noted that when the vertical spindle circular grinding head assembly 42 is installed, only the housing 4201 is fixedly connected to the bottom of the slide 31, while the drive shaft 34 is suspended. When the vertical spindle circular grinding head assembly 42 is working, the grinding wheel 4202 is driven by the motor 4203 inside the housing 4201, while the motor 33 is stopped. The reason for this design is to reduce the driving connection links of the grinding wheel 4202, improve the coaxiality of the rotation of the grinding wheel 4202, and thus improve the grinding accuracy of the circular surface. Example 3:

[0061] The difference between this embodiment and Embodiment 1 is that: Figure 16 , 19 As shown in Figure 20, the vertical spindle surface grinding head assembly 41 mounted at the bottom of the slide 31 is replaced with a horizontal spindle grinding head assembly 43; the details are as follows:

[0062] The horizontal spindle grinding head assembly 43 includes a housing 4301 fixedly connected to the bottom of the slide 31, a motor 4303 horizontally fixedly installed inside the housing 4301, and a grinding wheel 4302 installed at the output end of the motor 4303. It should be noted that when the horizontal spindle grinding head assembly 43 is installed, only the housing 4301 is fixedly connected to the bottom of the slide 31, while the drive shaft 34 is suspended. When the horizontal spindle grinding head assembly 43 is working, the grinding wheel 4302 is driven by the motor 4303 inside the housing 4301, while the motor 33 is stopped.

[0063] At the same time, it should be noted that the shape and size of the grinding wheel 4202 of the vertical shaft circular grinding head assembly 42 in Embodiment 2 and the grinding wheel 4302 of the horizontal shaft grinding head assembly 43 in Embodiment 3 can be changed according to specific working requirements and are not limited to the style in the current embodiment. Example 4:

[0064] The difference between this embodiment and Embodiment 1 is that: Figure 21 As shown, the worktable is set up with a circular worktable 51 and a rectangular worktable 52 side by side. This allows for the processing of workpieces with larger length dimensions using the rectangular worktable 52, and for the processing of small workpieces and their inner and outer end faces using the circular worktable 51, effectively improving processing efficiency.

[0065] Meanwhile, in this embodiment, both the circular worktable 51 and the rectangular worktable 52 use electromagnetic structures to fix the workpiece; in addition, the drive cylinder 2202 is a multi-stage servo hydraulic cylinder.

[0066] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and the inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.

Claims

1. A gantry-type moving ram-type composite surface grinder structure, characterized in that, Includes a bed (1), a gantry (2) that is horizontally and longitudinally slidably mounted on the upper end of the bed (1), a ram mechanism (3) that is set on the gantry (2) and vertically slidably mounted on the center of the gantry (2) via a ram (31), a grinding head assembly that is modularly mounted to the bottom of the ram (31), and a worktable that is mounted on the bed (1) and located below the grinding head assembly; The grinding head assembly includes a vertical spindle planar grinding head assembly (41), a vertical spindle circular grinding head assembly (42), and a horizontal spindle grinding head assembly (43). According to the working requirements, one of the vertical spindle planar grinding head assembly (41), the vertical spindle circular grinding head assembly (42), and the horizontal spindle grinding head assembly (43) is modularly installed with the bottom of the slide (31). The worktable is a circular worktable (51) and / or a rectangular worktable (52).

2. The structure of a gantry-moving sliding ram type composite surface grinder according to claim 1, characterized in that: The gantry frame (2) includes a gantry drive assembly (22), a support plate (23), and a guide block (24) that are fixedly installed from bottom to top; the gantry drive assembly (22) includes a drive plate (2201), a drive cylinder (2202), and a support base (2203); the drive cylinder (2202) is fixedly installed on the bed (1) through the support base (2203); the drive plate (2201) is slidably installed on the upper end of the bed (1) through the slide rail assembly (21) and is driven by the drive cylinder (2202); The ram mechanism (3) further includes an electric screw assembly (32), which is fixedly installed with the ram (31), and the slider (3201) on the electric screw assembly (32) is fixedly installed with the receiving plate (23); the ram (31) is slidably installed with the guide block (24), and can slide up and down through the drive plate (2201) and the receiving plate (23) under the drive of the electric screw assembly (32).

3. The structure of a gantry-moving sliding ram type composite surface grinder according to claim 1, characterized in that: The vertical shaft flat grinding head assembly (41) includes a main shaft (4101), a grinding head chuck body (4102) coaxially fixedly installed at the lower end of the main shaft (4101), abrasive pads (4103) evenly distributed on the grinding head chuck body (4102), and a housing component that is sealed and rotated with the main shaft (4101); the slide (31) is a hollow structure; the slide mechanism (3) also includes a motor (33) fixedly installed on the top of the slide (31), and a transmission shaft (34) disposed inside the slide (31) and connected at its top end to the output end of the motor (33); the housing component is fixedly installed at the bottom of the slide (31), and the main shaft (4101) and the transmission shaft (34) are connected when the housing component is installed with the slide (31).

4. The structure of a gantry-moving sliding ram type composite surface grinder according to claim 3, characterized in that: The housing component includes flange one (4106), housing one (4104) and flange two (4107) fixedly connected from bottom to top; the vertical shaft surface grinding head assembly (41) also includes a roller bearing (4105) disposed between housing one (4104) and main shaft (4101), a thrust ball bearing (4108) located between the bottom of housing one (4104) and main shaft (4101), a positioning cover (4109) sleeved on the main shaft (4101) and rotatably connected to the upper end of housing one (4104) through another thrust ball bearing (4108), a spring cover (4110) sleeved on the main shaft (4101) and elastically connected to the upper end of positioning cover (4109) through several springs (4112), and a locking nut (4111) threadedly connected to the main shaft (4101) for pressing the spring cover (4110).

5. The structure of a gantry-moving sliding ram type composite surface grinder according to claim 1, characterized in that: The vertical shaft circular grinding head assembly (42) includes a housing two (4201) fixedly connected to the bottom of the slide (31), a motor one (4203) vertically fixedly installed inside the housing two (4201), and a grinding wheel one (4202) installed at the output end of the motor one (4203).

6. The structure of a gantry-moving sliding ram type composite surface grinder according to claim 1, characterized in that: The horizontal shaft grinding head assembly (43) includes a housing three (4301) fixedly connected to the bottom of the slide (31), a motor two (4303) horizontally fixedly installed in the housing three (4301), and a grinding wheel two (4302) installed at the output end of the motor two (4303).

7. The structure of a gantry-moving sliding ram type composite surface grinder according to claim 1, characterized in that: The circular worktable (51) includes a mounting platform (5102) mounted on the bed (1) via a fixing frame (5101), a second motor (5104) fixedly mounted on the bottom of the mounting platform (5102), a turntable (5103) rotatably mounted on the top of the mounting platform (5102), and a second transmission shaft (5105) that passes through the inside of the mounting platform (5102) and is fixedly connected at one end to the output end of the second motor (5104) and at the other end to the turntable (5103).

8. The structure of a gantry-moving sliding ram type composite surface grinder according to claim 7, characterized in that: The turntable (5103) and rectangular worktable (52) use electromagnetic structure or disc structure to fix the workpiece.

9. A gantry-type moving slide-type composite surface grinder structure according to any one of claims 1-7, characterized in that: The bed (1) is also provided with a coolant tank (6) at the bottom corresponding to the workbench.

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