Safe clamping device for heavy-load vertical lathe beam

Abstract

The utility model relates to the technical field of beam safety of a vertical lathe, in particular to a safe clamping device for a heavy-load vertical lathe beam, which comprises a fulcrum oil cylinder, the fulcrum oil cylinder is arranged in a displacement beam, a lever pressing plate head end is arranged above the fulcrum oil cylinder, and a pressure adjusting bolt is arranged in the center inside the lever pressing plate head end. A transverse limiting plate is arranged between the middle section of the lever pressing plate and the displacement cross beam, the lever pressing plate and the displacement cross beam are fixed through a plurality of position limiting bolts, the position limiting bolts penetrate through the lever pressing plate, the tail ends of the position limiting bolts are all inserted into the displacement cross beam, and a pressing block is arranged below the tail end of the lever pressing plate. The lever pressing plate and the pressing block are fixed through a position limiting pin, a guide rail plate is embedded in the bottom end of the pressing block, and the bottom end of the guide rail plate is a guide rail face of the stand column. According to the safe clamping device for the heavy-load vertical lathe beam, the fulcrum oil cylinder and the lever pressing plate are adopted as the main body, the structure is simple, installation and adjustment are convenient, and use is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of beam safety of vertical lathes, in particular to a safety clamping device for the beam of a heavy-loaded vertical lathe. Background Art

[0002] For moving beam vertical lathes, due to the high processing requirements of parts, the crossbeam often needs to be positioned at a certain position on the column, and the parts processing is completed by relying on the extension and retraction of the ram. There are many ways to position the crossbeam, and the most important point is to firmly clamp the crossbeam on the column guide rail to effectively ensure the processing accuracy of the machine tool. Therefore, a safe and reliable crossbeam clamping device is particularly important for fixing the position of the crossbeam.

[0003] There are many ways to clamp the crossbeam. Currently, most use a wedge-type cylinder clamping method, where the clamping force is calculated by the length of the lever. This structure is cumbersome to manufacture, requires many components, and has low safety and stability. Furthermore, the hydraulic station needs to supply oil whether the crossbeam is clamped or released, and a microswitch is required to identify the extreme position of the piston during movement. Failure in any of these steps can pose a safety hazard. Therefore, to address these shortcomings, a safety clamping device for the crossbeam of a heavy-duty vertical lathe was proposed. Summary of the Invention

[0004] The purpose of the utility model is to provide a heavy-duty vertical lathe crossbeam safety clamping device to overcome the defects of the prior art crossbeam clamping application such as complicated structure manufacturing, many combined parts, and low safety and stability.

[0005] In order to achieve the above-mentioned object, the utility model provides a heavy-load vertical lathe crossbeam safety clamping device, comprising:

[0006] The fulcrum oil cylinder is installed in the displacement beam, the top of the fulcrum oil cylinder is the front end of the lever pressure plate, the internal center of the front end of the lever pressure plate is installed with a pressure adjustment bolt, the middle section of the lever pressure plate and the displacement beam are provided with a transverse limit plate, the lever pressure plate and the displacement beam are fixed by a plurality of position limiting bolts, the plurality of position limiting bolts pass through the lever pressure plate, the tail ends of the plurality of position limiting bolts are all inserted into the displacement beam, the bottom of the tail end of the lever pressure plate is a clamping block, the lever pressure plate and the clamping block are fixed by a position limiting pin, the bottom end of the clamping block is inlaid with a guide plate for installation, and the bottom end of the guide plate is the guide surface of the column.

[0007] Preferably, a first circular hole is provided at the front end of the lever pressure plate, a third circular hole is provided at the rear end of the lever pressure plate, a plurality of second circular holes are provided between the first circular hole and the second circular hole, the first circular hole and the second circular hole are both through holes, and the third circular hole is a non-through hole.

[0008] Preferably, the diameter of the first circular hole is greater than the diameter of the third circular hole, and the diameter of the second circular hole is greater than the diameter of the first circular hole.

[0009] Preferably, the lever pressure plate passes through the first circular hole to install the pressure adjustment bolt, the lever pressure plate passes through the second circular hole to install the position limiting bolt, and the lever pressure plate passes through the third circular hole to install the position limiting pin.

[0010] Preferably, the top and bottom ends of the pressure adjusting bolt both pass through the lever pressure plate, the top end of the pressure adjusting bolt is installed with a pressure anti-loosening nut, and the bottom end of the pressure adjusting bolt is a fulcrum oil cylinder.

[0011] Preferably, a positioning groove is provided in the middle section of the top end of the displacement beam, and the displacement beam is installed with a transverse limiting plate through the positioning groove.

[0012] Preferably, the top ends of the plurality of position-limiting bolts all pass through the lever pressure plate, and a spherical washer is installed between the top end of each position-limiting bolt and the lever pressure plate.

[0013] Preferably, the top end of the pressing block is set as an arc-shaped surface, and the arc-shaped surface of the pressing block contacts the bottom surface of the tail end of the lever pressure plate.

[0014] The utility model has the following beneficial effects:

[0015] The heavy-load vertical lathe crossbeam safety clamping device provided by the utility model adopts a fulcrum oil cylinder and a lever pressure plate as the main body, has a simple structure, and the fulcrum oil cylinder and the lever pressure plate are respectively connected to the displacement crossbeam. Clamping and loosening are achieved through the cooperation of the fulcrum oil cylinder and the displacement crossbeam, and limiting is achieved through the cooperation of the lever pressure plate and the displacement crossbeam. The utility model is easy to install and adjust and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional schematic diagram of a safety clamping device for a heavy-duty vertical lathe crossbeam according to an embodiment of the present utility model;

[0017] Figure 2 It is a top view of the heavy-duty vertical lathe crossbeam safety clamping device according to an embodiment of the present utility model.

[0018] Legend:

[0019] 1- displacement beam; 2- fulcrum cylinder; 3- pressure adjustment bolt; 4- pressure anti-loosening nut; 5- transverse limit plate; 6- spherical washer; 7- position limiting bolt; 8- lever pressure plate; 9- position limiting pin; 10- clamping block; 11- guide plate; 12- column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Figure 1 This is a cross-sectional schematic diagram of a heavy-duty vertical lathe crossbeam safety clamping device according to an embodiment of the present invention. Figure 2 This is a top view of the heavy-duty vertical lathe crossbeam safety clamping device according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, the utility model provides a heavy-duty vertical lathe crossbeam safety clamping device, comprising:

[0022] The fulcrum cylinder 2 is installed in the displacement beam 1, and the top of the fulcrum cylinder 2 is the head end of the lever pressure plate 8, and the internal center of the head end of the lever pressure plate 8 is installed with a pressure adjustment bolt 3. The middle section of the lever pressure plate 8 and the displacement beam 1 are provided with a transverse limit plate 5. The lever pressure plate 8 and the displacement beam 1 are fixed by a plurality of position limiting bolts 7, and the plurality of position limiting bolts 7 pass through the lever pressure plate 8. The tail ends of the plurality of position limiting bolts 7 are all inserted into the displacement beam 1. Below the tail end of the lever pressure plate 8 is a clamping block 10, and the lever pressure plate 8 and the clamping block 10 are fixed by a position limiting pin 9. The bottom end of the clamping block 10 is inlaid with a guide plate 11, and the bottom end of the guide plate 11 is the guide surface of the column 12.

[0023] In this safety clamping device, a first circular hole is provided at the front end of the lever pressure plate 8, a third circular hole is provided at the rear end of the lever pressure plate 8, and multiple second circular holes are provided between the first circular hole and the second circular hole. The first circular hole and the second circular hole are both through holes, and the third circular hole is a non-through hole. Among them, the diameter of the first circular hole is larger than the diameter of the third circular hole, and the diameter of the second circular hole is larger than the diameter of the first circular hole.

[0024] In actual application, the lever pressing plate 8 passes through the first circular hole to install the pressure adjustment bolt 3, passes through the second circular hole to install the position limiting bolt 7, and passes through the third circular hole to install the position limiting pin 9.

[0025] It's important to note that the diameter of the pressure-adjusting bolt 3 matches the diameter of the first circular hole in the lever pressure plate 8, the diameter of the position-defining bolt 7 matches the diameter of the second circular hole in the lever pressure plate 8, and the diameter of the position-defining pin 9 matches the diameter of the third circular hole in the lever pressure plate 8. In other words, the diameter of the pressure-adjusting bolt 3 is larger than the diameter of the position-defining pin 9, and the diameter of the position-defining bolt 7 is larger than the diameter of the pressure-adjusting bolt 3.

[0026] In this safety clamping device, the top and bottom ends of the pressure adjusting bolt 3 both pass through the lever pressure plate 8, and the top of the pressure adjusting bolt 3 is installed with a pressure anti-loosening nut 4, wherein the pressure anti-loosening nut 4 is set as a polygonal ring, the inner part of the polygonal ring is sleeved with the pressure adjusting bolt 3, and the bottom of the polygonal ring is the top of the lever pressure plate 8. At the same time, the inner diameter of the polygonal ring is adapted to the diameter of the pressure adjusting bolt 3. In addition, the bottom end of the pressure adjusting bolt 3 is the fulcrum cylinder 8, and the bottom end of the pressure adjusting bolt 3 is provided with a circular arc surface. The top of the fulcrum cylinder 2 is provided with a piston, and the circular arc surface of the pressure adjusting bolt 3 contacts the piston.

[0027] It should be noted that in actual application, it is necessary to ensure that the pressure adjustment bolt 3 is in full contact with the piston of the fulcrum cylinder 2 at all times, and the pressure anti-loosening nut 4 effectively ensures that the entire working mechanism is not loose after adjustment.

[0028] In actual application, a positioning groove is provided in the middle section of the top end of the displacement beam 1, and the displacement beam 1 is installed with a transverse limiting plate 5 through the positioning groove to limit the transverse position of the lever pressure plate 8 when working.

[0029] In this safety clamping device, multiple position limiting bolts 7 pass through the lever pressure plate 8, the bottom ends of multiple position limiting bolts 7 are inserted into the interior of the displacement beam 1, and the top ends of multiple position limiting bolts 7 all pass through the lever pressure plate 8. A spherical washer 6 is installed between the top end of each position limiting bolt 7 and the lever pressure plate 8. The spherical washer 6 allows the lever pressure plate 8 to have two degrees of freedom, front and back, so that the lever pressure plate 8 can press down and lift up the clamping block 10.

[0030] In actual application, the number of position limiting bolts 7 is not specifically limited. The number of position limiting bolts 7 is preferably an even number, and the number of position limiting bolts 7 is at least 2. Their installation position is based on the pressure adjustment bolt 3 as the center line, and they are distributed in pairs on both sides of the rear end of the lever pressure plate 8.

[0031] In this safety clamping device, the top of the clamping block 10 is set to be an arc-shaped surface, and the arc-shaped surface of the clamping block 10 contacts the bottom surface of the tail end of the lever pressure plate 8. The position is limited by the position limiting pin 9. The position limiting pin 9 is clearance-matched with the clamping block 10, and has a small degree of freedom space, which allows the clamping block 10 to carry the guide plate 11 and be completely pressed on the guide surface of the column 12.

[0032] The utility model provides a heavy-duty vertical lathe crossbeam safety clamping device, which adopts a fulcrum oil cylinder and a lever pressure plate as the main body, with a simple structure, easy installation and adjustment, and reliable use. The following describes in detail the working principle of this heavy-duty vertical lathe crossbeam safety clamping device:

[0033] In this embodiment, it is composed of a displacement beam 1, a fulcrum cylinder 2, a pressure adjustment bolt 3, a pressure anti-loosening nut 4, a transverse limit plate 5, a spherical washer 6, a position limiting bolt 7, a lever pressure plate 8, a position limiting pin 9, a clamping block 10, a guide plate 11 and a column 12, which realizes the safe clamping of the heavy-load vertical lathe beam during lifting and lowering.

[0034] In actual application, the fulcrum cylinder 2 is installed in the displacement beam 1, and the top of the fulcrum cylinder 2 is the head end of the lever pressure plate 8. The internal center of the head end of the lever pressure plate 8 is installed with a pressure adjustment bolt 3, and the top end of the pressure adjustment bolt 3 is installed with a pressure anti-loosening nut 4. The middle section of the lever pressure plate 8 and the displacement beam 1 is provided with a transverse limit plate 5. The lever pressure plate 8 and the displacement beam 1 are fixed by multiple position limiting bolts 7. Multiple position limiting bolts 7 pass through the lever pressure plate 8. A spherical washer 6 is installed between the top end of each position limiting bolt 7 and the lever pressure plate 8. The tail ends of multiple position limiting bolts 7 are all inserted into the displacement beam 1. Below the tail end of the lever pressure plate 8 is a clamping block 10. The lever pressure plate 8 and the clamping block 10 are fixed by a position limiting pin 9. The bottom end of the clamping block 10 is inlaid with a guide plate 11, and the bottom end of the guide plate 11 is the guide surface of the column 12.

[0035] In this embodiment, the fulcrum cylinder 2 is in contact with the pressure adjustment bolt 3; when hydraulic oil comes, the disc spring in the fulcrum cylinder 2 is compressed, and the lever pressure plate 8 is in a relaxed state. When the hydraulic oil is unloaded, the piston of the fulcrum cylinder 2 squeezes the adjustment bolt 3, so that the pressure adjustment bolt 3 drives the lever pressure plate 8 to lift the fulcrum. At this time, the other end of the lever pressure plate 8 is firmly pressed on the guide rail surface of the column 12, thereby realizing the clamping of the beam.

[0036] In actual application, the pressure adjusting bolt 3 is installed in the lever pressure plate 8 to form a force transmission system. The lower end of the pressure adjusting bolt 3 contacts the fulcrum cylinder 2, and the pressure anti-loosening nut 4 is installed on the upper end of the pressure adjusting bolt 3 to ensure that the lever pressure plate 8 will not loosen when the fulcrum cylinder 2 and the pressure adjusting bolt 3 drive the lever pressure plate 8 to work; the horizontal limit plate 5 is engaged in the positioning groove of the displacement beam 1 to limit the horizontal position of the lever pressure plate 8 when working.

[0037] In this embodiment, the spherical washer 6 is pressed into the lever pressure plate 8 by the position limiting bolt 7. The spherical washer 6 enables the lever pressure plate 8 to have two degrees of freedom, front and back, so that the lever pressure plate 8 can press down and lift the clamping steel block 10; the contact part between the clamping block 10 and the lever pressure plate 8 is an arc surface, and the position is limited by the position limiting pin 9. The position limiting pin 9 and the clamping block 10 are clearance fit, and have a tiny degree of freedom space, which can make the clamping block 10 carry the guide plate 11 and be completely pressed on the guide surface of the column 12; the guide plate 11 is embedded in the clamping block 10, and the guide plate 11 is in contact with the guide surface of the column 12.

[0038] It should be noted that, in actual application, the pressing block 10 is a steel block, and the guide rail plate 11 is made of an alloy plate.

[0039] The heavy-load vertical lathe crossbeam safety clamping device provided by the utility model adopts a fulcrum oil cylinder and a lever pressure plate as the main body, has a simple structure, and the fulcrum oil cylinder and the lever pressure plate are respectively connected to the displacement crossbeam. Clamping and loosening are achieved through the cooperation of the fulcrum oil cylinder and the displacement crossbeam, and limiting is achieved through the cooperation of the lever pressure plate and the displacement crossbeam. The utility model is easy to install and adjust and reliable to use.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heavy-duty vertical lathe crossbeam safety clamping device, characterized in that: include: A fulcrum oil cylinder (2) is installed in the displacement beam (1), the upper part of the fulcrum oil cylinder (2) is the head end of the lever pressure plate (8), the inner center of the head end of the lever pressure plate (8) is installed with a pressure adjustment bolt (3), the middle section of the lever pressure plate (8) and the displacement beam (1) are provided with a transverse limit plate (5), the lever pressure plate (8) and the displacement beam (1) are fixed by a plurality of position limiting bolts (7), the plurality of position limiting bolts (7) pass through the lever pressure plate (8), the tail ends of the plurality of position limiting bolts (7) are all inserted into the displacement beam (1), the lower part of the tail end of the lever pressure plate (8) is provided with a clamping block (10), the lever pressure plate (8) and the clamping block (10) are fixed by a position limiting pin (9), the bottom end of the clamping block (10) is inlaid with a guide plate (11), and the bottom end of the guide plate (11) is the guide surface of the column (12).

2. The heavy-duty vertical lathe crossbeam safety clamping device according to claim 1, characterized in that: The lever pressing plate (8) has a first circular hole at its front end and a third circular hole at its rear end. A plurality of second circular holes are provided between the first circular hole and the second circular hole. The first circular hole and the second circular hole are both through holes, and the third circular hole is a non-through hole.

3. The heavy-load vertical lathe crossbeam safety clamping device according to claim 2, characterized in that: The diameter of the first circular hole is greater than the diameter of the third circular hole, and the diameter of the second circular hole is greater than the diameter of the first circular hole.

4. The heavy-duty vertical lathe crossbeam safety clamping device according to claim 2, characterized in that: The lever pressing plate (8) passes through the first circular hole to install the pressure adjustment bolt (3), the lever pressing plate (8) passes through the second circular hole to install the position limiting bolt (7), and the lever pressing plate (8) passes through the third circular hole to install the position limiting pin (9).

5. The heavy-duty vertical lathe crossbeam safety clamping device according to claim 4, characterized in that: The top and bottom ends of the pressure adjustment bolt (3) both pass through the lever pressure plate (8), a pressure anti-loosening nut (4) is installed at the top end of the pressure adjustment bolt (3), and the bottom end of the pressure adjustment bolt (3) is the fulcrum oil cylinder (2).

6. The heavy-duty vertical lathe crossbeam safety clamping device according to claim 1, characterized in that: A positioning groove is provided in the middle section of the top end of the displacement beam (1), and a transverse limiting plate (5) is installed on the displacement beam (1) through the positioning groove.

7. The heavy-duty vertical lathe crossbeam safety clamping device according to claim 1, characterized in that: The top ends of the plurality of position limiting bolts (7) all pass through the lever pressure plate (8), and a spherical washer (6) is installed between the top end of each position limiting bolt (7) and the lever pressure plate (8).

8. The heavy-duty vertical lathe crossbeam safety clamping device according to claim 1, characterized in that: The top end of the pressing block (10) is configured as an arc-shaped surface, and the arc-shaped surface of the pressing block (10) contacts the bottom surface of the tail end of the lever pressure plate (8).

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