Box body and stand column structure for numerical control tool turret

Abstract

The invention discloses a box body and stand column structure for a numerical control tool turret, and belongs to the technical field of numerical control tool turrets. The box mainly comprises a box body which is integrally cast and formed; the stand column is arranged on the outer side of the box body, the stand column is integrally cast and formed, and a mounting groove is formed in the bottom of the stand column and used for connecting the stand column with a machine tool carriage; the external locking mechanism is arranged between the box body and the stand column, the external locking mechanism is provided with at least two groups of friction surfaces arranged on the box body, and the friction surfaces are respectively provided with an S-shaped lubricating groove; the hard rail surfaces are arranged on the stand columns, and the hard rail surfaces are attached to the friction surfaces; the at least two groups of fixing planes are arranged on the box body, and the fixing planes are inclined planes. According to the box body and stand column structure for the numerical control tool turret, locking of the two parts of the box body is achieved, the situation that positioning is not accurate when a workpiece is cut is prevented, and the rigidity of the tool turret during heavy cutting is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of CNC turrets, and in particular to a box and column structure for CNC turrets. Background Art

[0002] The turret is the general term for the automatic tool changer and tool drive device of a CNC machine tool. The power turret is commonly used in turning and milling machine tools and is one of the core components. Multiple tools can be installed on the power turret along the circumference of the cutter disc for turning and milling processing.

[0003] When the system drives the turret to move in the vertical direction of the machine tool slide for processing, the turret is usually moved in the vertical direction by driving the lead screw pair through the motor; However, when heavy cutting is performed on the workpiece, due to the small contact area between the turret and the slide rail, the turret is easy to slide up and down and drive the tool, causing it to be inaccurately positioned when cutting the workpiece, resulting in insufficient rigidity of the turret during heavy cutting, so that the accuracy of the processed parts does not meet the requirements, the scrap rate of processing is increased, and production efficiency is reduced. Therefore, it is necessary to provide a box and column structure for a CNC turret to solve the above problems.

[0004] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0005] Based on the above-mentioned problems existing in the prior art, the problem to be solved by the present application is: to provide a box and column structure for a CNC turret, which can lock the two parts of the box to prevent inaccurate positioning when cutting the workpiece and ensure the rigidity of the turret during heavy cutting.

[0006] The technical solution adopted by the present application to solve the technical problem is: a box and column structure for a CNC turret, comprising: The box body is integrally cast; A column, which is arranged on the outside of the box body, is integrally cast, and has a mounting groove at the bottom thereof, and is used to connect the column to a machine tool carriage; An external locking mechanism, which is arranged between the box body and the column, and has at least two sets of friction surfaces arranged on the box body, and each of the friction surfaces is provided with an S-shaped lubrication groove; At least two sets of hard rail surfaces, which are arranged on the pillars and abut against the friction surface; At least two groups of fixed planes, the fixed planes are arranged on the box body, and the fixed planes are arranged as inclined planes; At least two groups of insert strips, one side of each insert strip is set as an inclined surface, and the inclined surface is in sliding contact with the inclined surface of the fixed plane; The fixing plane is provided with a locking oil hole, and an end face sealing cover for end face sealing is installed at the locking oil hole. Oil enters through the locking oil hole to generate oil pressure, which is suitable for pushing the insert strip to fit with the fixing plane, thereby increasing the friction between the insert strip and the fixing plane. An internal locking mechanism is arranged inside the box and is used to lock the inside of the box.

[0007] Furthermore, the external locking mechanism has a first baffle and a second baffle respectively arranged at both ends of one side of the box body, the friction surface is arranged on the inner sides of the first baffle and the second baffle, the first vertical rod and the second vertical rod are respectively arranged at both ends of one side of the column, the first vertical rod and the second vertical rod respectively cooperate with the first baffle and the second baffle, and the hard rail surface is arranged on the first vertical rod and the second vertical rod.

[0008] Furthermore, a first fixing plane is provided on the second baffle, a first insert is provided between the first fixing plane and the hard rail surface, two groups of first locking oil holes are opened on the first fixing plane, and a first end face sealing cover for end face sealing is installed at the first locking oil hole.

[0009] Furthermore, both sides of the rear end of the box body are provided with mounting surfaces, the mounting surfaces are respectively provided with a first slider and a second slider, the mounting surfaces are provided with threaded holes, the first slider is provided with a fixing hole, and the fixing hole and the threaded hole correspond to each other.

[0010] Furthermore, a second fixing plane is provided on the inner side of the first slider, the second fixing plane has a certain slope, a second locking oil hole is provided on the inner side of the second fixing plane, a second end face sealing cover is installed at the second locking oil hole, and a second insert is provided between the first slider and the column.

[0011] Furthermore, the internal locking mechanism has locking holes opened on the top of the box body and the column, the locking hole passes through the box body, a locking rod is fixedly installed inside the locking hole, a locking seat is sleeved on the locking rod, and the locking seat is located in the locking hole and fixed on the box body.

[0012] Furthermore, the locking seat is a thin-walled cylindrical part, the locking seat has an outer circle located in the locking hole, a sealing ring is fixedly installed at the lower end of the locking seat, and a hydraulic oil inlet is opened on the locking hole.

[0013] Furthermore, mounting holes are formed through the box and the column, a lead screw is installed in the mounting hole, and the lead screw is used to drive the box to move in the column.

[0014] Furthermore, an oil hole inlet is provided on one side of the box body, and the oil hole inlet is respectively connected to the first locking oil hole and the second locking oil hole through a pipeline.

[0015] The beneficial effect of the present application is that the present application provides a box and column structure for a CNC turret, which is equipped with an external locking mechanism and an internal locking mechanism to lock the two parts of the box, thereby preventing inaccurate positioning when the workpiece is cut, ensuring the rigidity of the turret during heavy cutting, thereby reducing the scrap rate of processing, improving processing efficiency and production efficiency, and also improving the precision and quality of product processing.

[0016] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is an overall schematic diagram of a box and column structure for a CNC turret in this application; Figure 2 for Figure 1 A separate schematic diagram of the middle box; Figure 3 for Figure 2 Schematic diagram of the overall structure from different perspectives; Figure 4 for Figure 1 A separate schematic diagram of the neutral column; Figure 5 for Figure 1 Schematic diagram of the overall structure of the Figure 6 for Figure 5 Schematic diagram of the exploded box; Figure 7 for Figure 6 A schematic cross-sectional view of the installation of the second insert; Figure 8 for Figure 5 A schematic cross-sectional view of the middle box; Fig. 9 for Figure 8 A magnified schematic diagram of the middle A area; Among them, the reference numerals in the figure are: 1. Box body; 11. First baffle; 12. Second baffle; 13. Friction surface; 14. First fixing plane; 15. First locking oil hole; 16. First end face sealing cover; 17. Mounting surface; 171. Threaded hole; 2. Column; 21. First vertical pole; 22. Second vertical pole; 23. Hard rail surface; 24. First inlay strip; 3. First slider; 31. Fixing hole; 32. Second fixing plane; 33. Second locking oil hole; 34. Second end face sealing cover; 4. Second slider; 5. Second inlay strip; 6. Mounting groove; 7. Locking hole; 71. Locking rod; 72. Locking seat; 73. Sealing ring; 74. Outer circle; 8. Mounting hole; 81. Screw piece; 9. Oil hole inlet. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] like Figure 1-Figure 2 As shown, the present application provides a box and column structure for a CNC turret, including a box 1, which is integrally cast, and a column 2 is sleeved on the outer side of the box 1, and the column 2 is also integrally cast, and a mounting groove 6 is opened at the bottom of the column 2, and the mounting groove 6 is used to connect the column 2 to the machine tool carriage; At the same time, a mounting hole 8 is opened through the box body 1 and the column 2, and a screw member 81 is installed in the mounting hole 8. In the present application, the screw member 81 is a ball screw pair in the prior art, having two matching parts, a screw and a nut. The screw is rotatably connected to the mounting hole 8 and protrudes from the column 2, and is then installed on the machine tool, while the nut is fixed in the box body 1. Therefore, by rotating the screw, the nut can drive the box body 1 to move in the column 2.

[0021] like Figure 2-Figure 3As shown, in order to adjust the rigidity of the box body 1 as a whole, an external locking mechanism is provided between the box body 1 and the column 2, and the external locking mechanism has a first baffle 11 and a second baffle 12 respectively provided at two ends of one side of the box body 1, and the first baffle 11 and the second baffle 12 are provided in an L shape, and a friction surface 13 is provided on the inner side of the first baffle 11 and the second baffle 12. In the present application, three groups of the friction surface 13 are provided, which are respectively located at the two inner ends of the first baffle 11 and one side end of the second baffle 12, and S-shaped lubrication grooves are respectively provided on the three groups of friction surfaces 13, and the other side of the second baffle 12 is provided as a first fixed plane 14, and the first fixed plane 14 has a certain slope; like Figure 4 As shown, the first and second vertical rods 21 and 22 are respectively provided at both ends of one side of the column 2, and the first and second vertical rods 21 and 22 cooperate with the first baffle 11 and the second baffle 12 respectively, and the first and second vertical rods 21 and 22 have hard rail surfaces 23. In the present application, four groups of the hard rail surfaces 23 are provided, wherein three groups of the hard rail surfaces 23 are respectively in contact with the three groups of friction surfaces 13, and the remaining group of the hard rail surfaces 23 corresponds to the first fixed plane 14; In the present application, lubricating oil is regularly added to the S-shaped lubrication groove, so the friction coefficient between the hard rail surface 23 and the friction surface 13 can be effectively reduced. In addition, the flatness and parallelism of the hard rail surface 23 can be controlled within 0.005mm after grinding, which greatly reduces the possibility of creeping during movement. The hard rail surface 23 has excellent wear resistance after quenching treatment, and the surface has good roughness. like Figure 1 and Figure 3 and Figure 5 As shown, a first insert strip 24 is provided between the first fixed plane 14 and the hard rail surface 23. One side of the first insert strip 24 is an inclined surface with a certain inclination. The inclined surface is in sliding contact with the first fixed plane 14. At the same time, two groups of first locking oil holes 15 are opened on the first fixed plane 14. A first end face sealing cover 16 for end face sealing is installed at the first locking oil hole 15. like Figure 2 and Figure 5-Figure 6 As shown, both sides of the rear end of the box body 1 are provided with mounting surfaces 17, and the mounting surfaces 17 are respectively provided with a first slider 3 and a second slider 4. In the present application, the mounting method and structure of the first slider 3 and the second slider 4 are consistent. The following takes the first slider 3 as an example to explain specifically: The mounting surface 17 is provided with a threaded hole 171, and the first slider 3 is provided with a fixing hole 31, the fixing hole 31 and the threaded hole 171 correspond to each other. It can be understood that the fixing hole 31 and the threaded hole 171 are internally threadedly connected with bolts, and the first slider 3 is fixedly mounted on the mounting surface 17 by the bolts; The first slider 3 is a hexahedral part and is integrally cast. A second fixing plane 32 is provided on the inner side of the first slider 3. The second fixing plane 32 has a certain slope. Three second locking oil holes 33 are provided on the inner side of the second fixing plane 32. A second end face sealing cover 34 is installed at the second locking oil holes 33. like Figure 1 and Figure 5-Figure 7 As shown, a second insert strip 5 is provided between the first slider 3 and the column 2. In the present application, one side of the second insert strip 5 has a certain slope, the slope is in sliding contact with the second fixed plane 32, and an S-shaped lubrication groove is processed on the slope, and lubricating oil is added to the S-shaped lubrication groove.

[0022] like Figure 2 and Figure 6 and Figure 8-Figure 9 As shown, the box body 1 is provided with an internal locking mechanism, which is used to lock the inside of the box body 1. The internal locking mechanism has a locking hole 7 opened on the box body 1 and the top of the column 2, and the locking hole 7 passes through the box body 1. A locking rod 71 is fixedly installed inside the locking hole 7, and a locking seat 72 is sleeved on the locking rod 71. The locking seat 72 is located in the locking hole 7 and fixed on the box body 1. In the present application, the locking seat 72 is a thin-walled cylindrical part, and the locking seat 72 has an outer circle 74 located in the locking hole 7, and a sealing ring 73 is fixedly installed at the lower end of the locking seat 72, so the sealing of the connection at the outer circle 74 is ensured by the sealing ring 73.

[0023] It should be noted that a plurality of groups of oil hole inlets 9 are provided on one side of the box body 1 , and the plurality of groups of oil hole inlets 9 are respectively connected to the first locking oil hole 15 , the second locking oil hole 33 and the locking hole 7 through pipelines.

[0024] In summary: In order to ensure the cutting rigidity of the workpiece during heavy cutting, the box body 1 can be locked in two parts, the first part is the guide rail locking (external locking), and the second part is the box body 1 locking (internal locking); When the guide rail is locked (external locking), the hydraulic oil with pressure is transmitted to the first locking oil hole 15 and the second locking oil hole 33 through the oil hole inlet 9. After the oil is introduced into the oil hole, the first end face sealing cover 16 and the second end face sealing cover 34 and the oil pressure make the first end face sealing cover 16 and the second end face sealing cover 34 fit more tightly with the first insert 24 and the second insert 5 respectively, so as to achieve a sealing effect. At the same time, the pressure of the hydraulic oil will also generate thrust, which will push the first insert 24 and the second insert 5. Since the first insert 24 and the second insert 5 are both provided with inclined surfaces, the inclined surfaces will fit together with the thrust, thereby increasing the friction between the first insert 24 and the second insert 5 and the first fixed plane 14 and the second fixed plane 32, thereby generating a locking force.

[0025] When the box body 1 is locked (internal locking), the pressurized hydraulic oil is transmitted to the locking hole 7 through the oil hole inlet 9, and the pressure of the hydraulic oil will act on the outer circle 74. Since the outer circle 74 of the locking seat 72 is a thin-walled part, it will deform inward with the pressure of the hydraulic oil, so that the outer circle 74 hugs the outer wall of the locking rod 71, thereby generating a locking force.

[0026] Therefore, by locking the two parts of the box body 1, the workpiece can be prevented from being positioned inaccurately during cutting, and the rigidity of the turret during heavy cutting can be ensured to reduce the scrap rate of processing, improve processing efficiency and production efficiency, and also improve the accuracy and quality of product processing.

[0027] It should be noted that the present application is a three-strip hard rail structure, which can be controlled separately according to actual conditions, and different sizes of locking forces can be generated by adjusting the pressure of the hydraulic system, thereby enhancing the static and dynamic rigidity of the turret.

[0028] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A box and column structure for a CNC turret, characterized in that: include: A box body (1), the box body (1) is integrally cast; A column (2), the column (2) being arranged on the outside of the box body (1), the column (2) being integrally cast, a mounting groove (6) being provided at the bottom of the column (2), the mounting groove (6) being used to connect the column (2) to a machine tool carriage; An external locking mechanism, the external locking mechanism being arranged between the box body (1) and the column (2), the external locking mechanism having at least two groups of friction surfaces (13) arranged on the box body (1), and each of the friction surfaces (13) being provided with an S-shaped lubrication groove; At least two sets of hard rail surfaces (23), the hard rail surfaces (23) being arranged on the upright column (2), the hard rail surfaces (23) being in contact with the friction surface (13); At least two sets of fixed planes, the fixed planes being arranged on the box body (1), the fixed planes being arranged as inclined planes; At least two groups of insert strips, one side of each insert strip is set as an inclined surface, and the inclined surface is in sliding contact with the inclined surface of the fixed plane; The fixing plane is provided with a locking oil hole, and an end face sealing cover for end face sealing is installed at the locking oil hole. Oil enters through the locking oil hole to generate oil pressure, which is suitable for pushing the insert strip to fit with the fixing plane, thereby increasing the friction between the insert strip and the fixing plane. An internal locking mechanism is arranged inside the box body (1), and is used to lock the inside of the box body (1).

2. The box and column structure for a CNC turret according to claim 1, characterized in that: The external locking mechanism comprises a first baffle (11) and a second baffle (12) respectively arranged at two ends of one side of the box body (1); the friction surface (13) is arranged on the inner side of the first baffle (11) and the second baffle (12); a first vertical rod (21) and a second vertical rod (22) are respectively arranged at two ends of one side of the column (2); the first vertical rod (21) and the second vertical rod (22) respectively cooperate with the first baffle (11) and the second baffle (12); and the hard rail surface (23) is arranged on the first vertical rod (21) and the second vertical rod (22).

3. The box and column structure for a CNC turret according to claim 2, characterized in that: The second baffle (12) is provided with a first fixing plane (14), a first insert strip (24) is provided between the first fixing plane (14) and the hard rail surface (23), two groups of first locking oil holes (15) are opened on the first fixing plane (14), and a first end face sealing cover (16) for end face sealing is installed at the first locking oil hole (15).

4. The box and column structure for a CNC turret according to claim 3, characterized in that: Both sides of the rear end of the box body (1) are provided with mounting surfaces (17), a first slider (3) and a second slider (4) are respectively provided on the mounting surfaces (17), a threaded hole (171) is provided on the mounting surfaces (17), a fixing hole (31) is provided on the first slider (3), and the fixing hole (31) and the threaded hole (171) correspond to each other.

5. The box and column structure for a CNC turret according to claim 4, characterized in that: A second fixing plane (32) is provided on the inner side of the first sliding block (3), the second fixing plane (32) has a certain slope, a second locking oil hole (33) is provided on the inner side of the second fixing plane (32), a second end face sealing cover (34) is installed at the second locking oil hole (33), and a second insert strip (5) is provided between the first sliding block (3) and the column (2).

6. The box and column structure for a CNC turret according to claim 1, characterized in that: The internal locking mechanism comprises a locking hole (7) formed on the top of the box body (1) and the column (2); the locking hole (7) passes through the box body (1); a locking rod (71) is fixedly installed inside the locking hole (7); a locking seat (72) is sleeved on the locking rod (71); the locking seat (72) is located in the locking hole (7) and is fixed on the box body (1).

7. The box and column structure for a CNC turret according to claim 6, characterized in that: The locking seat (72) is a thin-walled cylindrical part, and has an outer circle (74) located in the locking hole (7). A sealing ring (73) is fixedly mounted on the lower end of the locking seat (72), and a hydraulic oil inlet is provided on the locking hole (7).

8. The box and column structure for a CNC turret according to claim 1, characterized in that: The box body (1) and the column (2) are provided with mounting holes (8) extending therethrough, a lead screw (81) being installed in the mounting hole (8), the lead screw (81) being used to drive the box body (1) to move in the column (2).

9. The box and column structure for a CNC turret according to claim 5, characterized in that: An oil hole inlet (9) is provided on one side of the box body (1), and the oil hole inlet (9) is respectively connected to a pipeline between the first locking oil hole (15) and the second locking oil hole (33).

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