Gantry type milling and grinding integrated numerical control machine tool

Abstract

The utility model relates to the related field of numerical control machine tools, in particular to a gantry type milling and grinding integrated numerical control machine tool which comprises a machine tool table, a first electric sliding rail, a gantry sliding frame, a second electric sliding rail, a milling and grinding head, a circular frame, a driving assembly, a lifting air cylinder, a lifting frame, a strip-shaped hole, a supporting roller, a chip removal hole, a discharging opening, a fixing frame, a clamping air cylinder and a clamping plate. The back-up roll is arranged on the machine tool table and used for supporting a workpiece, so that the workpiece drives the back-up roll to rotate in the taking and placing process, friction between the workpiece and the machine tool table is reduced, more labor is saved in the workpiece taking and placing process, and convenience is brought to workpiece taking and placing; and friction between the workpiece and the machine tool table is reduced, so that abrasion caused by friction between the workpiece and the machine tool table is prevented, the quality of the workpiece is improved, and the maintenance cost of the machine tool table is reduced.

Description

Technical Field

[0001] The utility model relates to the relevant field of numerical control machine tools, in particular to a gantry type milling and grinding integrated numerical control machine tool. Background Art

[0002] The integrated milling and grinding CNC machine tool, also often called the milling-grinding compound machining center, is a highly integrated modern machining equipment. This machine tool integrates the functions of traditional CNC milling machines and grinders, and can complete milling, drilling, tapping, grinding and other machining operations on the same machine tool. This design greatly improves production efficiency, reduces the number of workpiece clamping times, ensures machining accuracy, and also saves workshop space and reduces production costs.

[0003] The existing fixed-column moving-beam gantry CNC milling and grinding machine tool with publication number CN217344446U can flexibly adjust the position of the object to be processed to achieve flexible milling and grinding, can quickly tighten and fix the object to be processed, has high milling efficiency, and prevents the object from shaking during milling, thereby improving the milling quality.

[0004] This existing patent places the workpiece directly on the mounting plate, and some workpieces are heavy and require more effort to pick up and place, which brings inconvenience to the workpiece. After the workpiece is processed, due to its heavy weight, it is easy for it to have greater friction with the machine tool table when it is taken out, which can easily cause wear of the workpiece and the machine tool table, reduce the quality of the workpiece and increase the maintenance cost of the machine tool table. Summary of the invention

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a gantry-type integrated milling and grinding CNC machine tool to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gantry type integrated milling and grinding CNC machine tool, comprising a machine table, a first electric slide rail installed on the side surface of the machine table, a gantry sliding frame slidably installed on the first electric slide rail, and a second electric slide rail installed on the top of the front end surface of the gantry sliding frame, a milling and grinding head is slidably installed on the second electric slide rail, and a circular frame is movably embedded on the top of the machine table;

[0007] The top surface of the circular frame is provided with a plurality of strip-shaped holes, a lifting cylinder is fixedly installed in the circular frame, and a lifting frame connected to the piston rod at the top of the lifting cylinder is slidably installed in the circular frame;

[0008] A driving assembly is provided at the bottom of the circular frame, which is used to drive the circular frame to rotate horizontally in the machine tool table;

[0009] The circular frame is provided with a positioning component for providing positioning for the workpiece;

[0010] A plurality of supporting rollers corresponding to the strip-shaped holes are rotatably installed in the lifting frame, and the supporting rollers are used to lift the workpiece upwards.

[0011] Preferably, the circular frame is flush with the top surface of the machine tool table.

[0012] Preferably, a plurality of chip removal holes are provided at the bottom of the circular frame, and a discharge port is provided at the bottom of the machine tool table, and each chip removal hole falls within the range of the discharge port.

[0013] Preferably, the positioning assembly includes a fixing frame fixed on the edge of the top surface of the circular frame, a clamping cylinder installed on the fixing frame, and a clamping plate fixed on the piston rod of the clamping cylinder, wherein the clamping plate is used to clamp and fix the workpiece.

[0014] Preferably, two groups of mutually symmetrical positioning components are provided on the circular frame, and the two groups of positioning components are respectively located at the front and rear ends of the top of the circular frame.

[0015] Preferably, the bottom end surface of the clamping plate is higher than the top end surface of the circular frame.

[0016] Preferably, the driving assembly includes a motor installed in the machine tool table, a driving gear fixed on the output shaft on the top of the motor, and a driven gear arranged outside the driving gear. The driving gear is connected to the driven gear through a pulley. The inner ring of the driven gear is vertically installed with a transmission shaft that is rotatably connected to the inner side of the machine tool table, and the transmission shaft is connected to the middle part of the bottom end surface of the circular frame.

[0017] Beneficial effects of the utility model:

[0018] The utility model arranges a support roller on the machine tool table, and provides support for the workpiece through the support roller, so that the workpiece drives the support roller to rotate during the process of taking and placing, reduces the friction between the workpiece and the machine tool table, makes the process of taking and placing the workpiece more labor-saving, brings convenience to the workpiece taking and placing, and reducing the friction between the workpiece and the machine tool table is also beneficial to preventing the workpiece and the machine tool table from being worn due to friction, which is beneficial to improving the quality of the workpiece and also beneficial to reducing the maintenance cost of the machine tool table. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the top view connection structure of the positioning assembly of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the lifting cylinder piston rod of the utility model in the extended state;

[0022] Figure 4 This is a schematic diagram of the support roller distribution structure of the utility model;

[0023] Figure 5 The utility model Figure 1 A schematic diagram of the enlarged structure in the middle.

[0024] Among them: machine tool table-1, first electric slide rail-2, gantry slide frame-3, second electric slide rail-5, milling head-5, circular frame-6, drive assembly-7, lifting cylinder-8, lifting frame-9, strip hole-10, support roller-11, chip removal hole-12, discharge port-13, fixed frame-14, clamping cylinder-15, clamping plate-16, motor-71, driving gear-72, driven gear-73, pulley-74, transmission shaft-75. DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0026] like Figure 1 As shown, the utility model provides a gantry type integrated milling and grinding CNC machine tool, comprising a machine tool table 1, a first electric slide rail 2 installed on the side surface of the machine tool table 1, a gantry slide frame 3 slidably installed on the first electric slide rail 2, the gantry slide frame 3 can move horizontally forward and backward along the first electric slide rail 2, a second electric slide rail 5 installed on the top of the front end surface of the gantry slide frame 3, a milling head 5 is slidably installed on the second electric slide rail 5, and the milling head 5 can move horizontally left and right along the second electric slide rail 5 for milling and grinding a workpiece;

[0027] like Figures 1 to 4 As shown, in this embodiment, a circular frame 6 is movably embedded in the top of the machine tool table 1, and the circular frame 6 can rotate horizontally along the inner side of the machine tool table 1;

[0028] A plurality of strip-shaped holes 10 are provided on the top surface of the circular frame 6. A lifting cylinder 8 is fixedly installed in the circular frame 6. A lifting frame 9 connected to the piston rod at the top of the lifting cylinder 8 is slidably installed in the circular frame 6. The lifting frame 9 can move vertically up and down along the inner side of the circular frame 6 under the drive of the lifting cylinder 8.

[0029] A driving assembly 7 is provided at the bottom of the circular frame 6 for driving the circular frame 6 to rotate horizontally in the machine tool table 1;

[0030] The circular frame 6 is provided with a positioning assembly for providing positioning for the workpiece;

[0031] A plurality of support rollers 11 corresponding to the strip holes 10 are rotatably mounted in the lifting frame 9, and the support rollers 11 are used to lift the workpiece upwards;

[0032] The circular frame 6 is flush with the top surface of the machine table 1, so that the workpiece can enter the circular frame 6 after being moved on the machine table 1;

[0033] In this embodiment, a plurality of chip removal holes 12 are provided at the bottom of the circular frame 6, and a discharge port 13 is provided at the bottom of the machine tool table 1. Each chip removal hole 12 falls within the range of the discharge port 13, so that the chips accumulated in the circular frame 6 can be discharged outward through the chip removal holes 12 and the discharge port 13.

[0034] In this embodiment, the positioning assembly includes a fixing frame 14 fixedly mounted on the edge of the top surface of the circular frame 6, a clamping cylinder 15 installed on the fixing frame 14, and a clamping plate 16 fixedly mounted on the piston rod of the clamping cylinder 15. The clamping plate 16 is driven inward by the clamping cylinder 15, and the clamping plate 16 is used to clamp and fix the workpiece;

[0035] Among them, two sets of mutually symmetrical positioning components are arranged on the circular frame 6, and the two sets of positioning components are respectively located at the front and rear ends of the top of the circular frame 6, so as to facilitate the clamping and fixing of the two ends of the workpiece, thereby improving the stability of the workpiece milling;

[0036] The bottom end surface of the clamping plate 16 is higher than the top end surface of the circular frame 6, so that the support roller 11 can move vertically under the clamping plate 16;

[0037] Specifically, the workpiece is placed above the circular frame 6, and then the lifting cylinder 8 is started to drive the lifting frame 9 to move upward, and the lifting frame 9 drives the supporting roller 11 to move upward, and the supporting roller 11 passes through the strip hole 11 to lift the workpiece upward and away from the top surface of the circular frame 6, and then the workpiece is pushed, and the workpiece drives the supporting roller 11 to rotate. When the workpiece moves to the appropriate position, the lifting cylinder 8 is controlled to drive the lifting frame 9 and the supporting roller 11 to move downward, and the supporting roller 11 drives the workpiece to move downward and contact the top surface of the circular frame 6, and the clamping cylinder 15 is controlled to drive the clamping plate 16 to move inward to clamp the workpiece;

[0038] Then, the first electric slide rail 2 is controlled to drive the gantry slide frame 3 and the milling head 5 to move forward and backward, while the second electric slide rail 5 can drive the milling head 5 to move horizontally in the left and right directions, so that the milling head 5 can perform all-round milling processing on the workpiece.

[0039] like Figure 5 As shown, in this embodiment, the driving assembly 7 includes a motor 71 installed in the machine tool table 1, a driving gear 72 fixed on the output shaft at the top of the motor 71, and a driven gear 73 arranged outside the driving gear 72;

[0040] The driving gear 72 is connected to the driven gear 73 through a pulley 74. The inner ring of the driven gear 73 is vertically installed with a transmission shaft 75 that is rotatably connected to the inner side of the machine tool table 1. The transmission shaft 75 is connected to the middle part of the bottom end surface of the circular frame 6, so that the circular frame 6 can be driven to rotate synchronously horizontally through the transmission shaft 75.

[0041] Specifically, after the milling and grinding of the workpiece is completed, the clamping cylinder 15 is controlled to drive the clamping plate 16 to separate from the workpiece, and then the lifting cylinder 8 is controlled again to drive the supporting roller 11 to lift the workpiece upward, and then the workpiece can be pulled out again. If the removal direction of the workpiece needs to be adjusted, the starting motor 71 can be used to drive the driving gear 72, the pulley 74 and the driven gear 73 to rotate, and the driven gear 73 can drive the circular frame 6 to rotate horizontally through the transmission shaft 75, and the circular frame 6 drives the lifting frame 9 and the supporting roller 11 to rotate horizontally, thereby adjusting the direction of the supporting roller 11, so as to facilitate pulling the workpiece on the supporting roller 11 to slide and take it out from different directions, thereby improving the flexibility of the CNC machine tool.

[0042] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gantry type integrated milling and grinding CNC machine tool, comprising a machine table, a first electric slide rail mounted on the side surface of the machine table, a gantry slide frame slidably mounted on the first electric slide rail, a second electric slide rail mounted on the top of the front end surface of the gantry slide frame, and a milling and grinding head slidably mounted on the second electric slide rail; It is characterized in that A circular frame is movably embedded on the top of the machine tool table; The top surface of the circular frame is provided with a plurality of strip-shaped holes, a lifting cylinder is fixedly installed in the circular frame, and a lifting frame connected to the piston rod at the top of the lifting cylinder is slidably installed in the circular frame; A driving assembly is provided at the bottom of the circular frame, which is used to drive the circular frame to rotate horizontally in the machine tool table; The circular frame is provided with a positioning component for providing positioning for the workpiece; A plurality of supporting rollers corresponding to the strip-shaped holes are rotatably installed in the lifting frame, and the supporting rollers are used to lift the workpiece upwards.

2. A gantry type integrated milling and grinding CNC machine tool according to claim 1, characterized in that: The circular frame is flush with the top surface of the machine tool table.

3. The gantry type integrated milling and grinding CNC machine tool according to claim 1, characterized in that: A plurality of chip removal holes are provided at the bottom of the circular frame, and a material discharge port is provided at the bottom of the machine tool table, and each chip removal hole falls within the range of the material discharge port.

4. The gantry type integrated milling and grinding CNC machine tool according to claim 1, characterized in that: The positioning assembly comprises a fixing frame fixedly mounted on the edge of the top surface of the circular frame, a clamping cylinder installed on the fixing frame, and a clamping plate fixedly mounted on the piston rod of the clamping cylinder, wherein the clamping plate is used for clamping and fixing the workpiece.

5. A gantry type integrated milling and grinding CNC machine tool according to claim 4, characterized in that: The circular frame is provided with two sets of mutually symmetrical positioning components, and the two sets of positioning components are respectively located at the front and rear ends of the top of the circular frame.

6. The gantry type integrated milling and grinding CNC machine tool according to claim 4, characterized in that: The bottom end surface of the clamping plate is higher than the top end surface of the circular frame.

7. The gantry-type integrated milling and grinding CNC machine tool according to claim 1, characterized in that: The driving assembly includes a motor installed in the machine tool table, a driving gear fixed on the output shaft on the top of the motor, and a driven gear arranged outside the driving gear. The driving gear is connected to the driven gear through a pulley. The inner ring of the driven gear is vertically installed with a transmission shaft that is rotatably connected to the inner side of the machine tool table. The transmission shaft is connected to the middle part of the bottom end surface of the circular frame.

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