Machine tool center frame

Abstract

The utility model discloses a machine tool center frame which comprises a center frame base, slope supporting seats are symmetrically arranged at the two ends of the center frame base, adjustable supporting assemblies are arranged on the slope supporting seats respectively, and the obliquely-upward ends of the supporting assemblies are connected with supporting idler wheels through wheel carriers. A side plate is further arranged on the center frame base, the side plate is located between the pair of slope supporting seats, the height of the side plate does not exceed the height of the slope supporting seats, and a plurality of auxiliary supporting rollers are further arranged on one side of the side plate; the center frame base is further provided with a bolt groove, and the bolt groove is connected with a machine tool workbench through an installation bolt. According to the machine tool center frame, the connecting installation mode and the supporting mode of the machine tool center frame are improved, so that the machine tool center frame is easy to install and use, the supporting range of the supporting idler wheels can be adjusted in a large range, and supporting of workpieces of various sizes is met; the structure is simple, the occupied space is small, and the device can be directly installed on a machine tool workbench.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a center frame of a machine tool. Background Art

[0002] During the machining process, the machine tool usually uses a fixture to clamp the workpiece and then process it. For workpieces that need to be rotated, push rods are usually set at both ends of the workpiece to clamp the workpiece. If the workpiece is long, a support frame is also required in the middle to support the workpiece to ensure its stability. For some workpieces that do not need to be rotated, support frames are also required. If the size or diameter of such workpieces is large, rolling support on both sides is not enough. There are also some workpieces that change diameter and need to be rotated, which need to be supported at different diameters. The existing machine tool center frame has a relatively single support function and is difficult to meet different needs. In addition, the installation of the existing machine tool center frame itself is also troublesome, and it cannot make good use of the existing workbench of the machine tool for installation and fixation. Summary of the invention

[0003] The utility model aims to provide a machine tool center frame in view of the problems existing in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A machine tool center frame comprises a center frame base, wherein slope support seats are symmetrically provided at both ends of the center frame base, and adjustable support components are respectively provided on the slope support seats, and the oblique upward ends of the support components are connected to support rollers through wheel frames; the center frame base is also provided with a side plate, and the side plate is located between a pair of the slope support seats and has a height not exceeding the slope support seats, and a plurality of auxiliary support rollers are also provided on one side of the side plate; the center frame base is also provided with a bolt groove, and the bolt groove is connected to the machine tool workbench through mounting bolts.

[0006] The center frame of this machine tool is easy to install and use by improving its connection installation and support methods. The support range of the supporting roller can be adjusted over a wide range to meet the support of workpieces of various sizes. It also has a simple structure, occupies less space, and can be directly installed on the machine tool workbench.

[0007] The support roller is a freely rotatable roller structure, which is installed at the end of the support assembly, plays a rolling support role, and can also change the support position under the adjustment of the support assembly. The auxiliary support rollers arranged on the side plate can also support the workpiece. The setting of the bolt groove can directly connect the mounting bolts and fasten it to the machine tool workbench. This installation method is very simple and can make full use of the existing workbench installation structure for installation.

[0008] Furthermore, the support assembly includes a sleeve disposed on the slope support seat, a slidable support core rod is sleeved in the sleeve, one end of the support core rod is exposed from the sleeve and connected to the wheel frame, and the other end of the support core rod is internally threadedly connected to an adjustment screw, and the adjustment screw has an adjustment knob disposed at the outer end of the sleeve. By turning the adjustment knob, the adjustment screw can be driven to rotate, so that the support core rod can be retracted or extended, thereby realizing the position adjustment of the support roller.

[0009] Furthermore, a limiting groove is provided on the outer circumference of the support core rod along the length direction, and a limiting bolt is provided on the sleeve, and one end of the limiting bolt is located in the limiting groove. Through the arrangement of the limiting bolt and the limiting groove, the circumferential movement, axial movement and stroke of the support core rod can be limited.

[0010] Furthermore, the adjustable range of the diameter of the circumscribed circle of a pair of supporting rollers is 70 to 250 mm, and the inclination angle of the slope supporting seat is 25 to 35 degrees.

[0011] Furthermore, the auxiliary support roller is connected to the side plate via a connecting rod, the connecting rod is provided with an external thread and connected with a knurled nut. The knurled nut can be screwed to adjust the position where the connecting rod extends, thereby adjusting the supporting position of the auxiliary support roller.

[0012] Furthermore, the bolt groove is a U-shaped opening groove, and the bolt groove is one arranged in the middle, or two arranged symmetrically on both sides.

[0013] Furthermore, a limit block is provided at the bottom of the center frame base, and the limit block is connected to the center frame base via a countersunk screw.

[0014] Furthermore, the side panels are arranged on the side edges of the center frame base, and the side panels and the slope support seat are integrally formed metal structural parts with the center frame base.

[0015] Furthermore, a plurality of hanging rings are provided on the side of the center frame base, and a plurality of circular holes are provided on the side panels.

[0016] In some embodiments, a limiting end side plate is further provided on one side of the bottom of the center frame base, and an adjustable handle is provided on the limiting end side plate.

[0017] Compared with the prior art, the beneficial effects of the utility model are: 1. The center frame of this machine tool is easy to install and use by improving its connection and installation method and support method, and the support range of the support roller can be adjusted in a wide range to meet the support of workpieces of various sizes; and it has a simple structure, occupies less space, and can be directly installed on the machine tool workbench; 2. The support roller is a freely rotatable roller structure, which is installed at the end of the support assembly to play a rolling support role, and can also change the support position under the adjustment of the support assembly; the auxiliary support rollers arranged on the side panels can also support the workpiece, especially for larger or heavier workpieces, to further improve the stability of the support; 3. The setting of the bolt groove can directly connect the mounting bolts to fasten them to the machine tool workbench. The installation method is very simple and makes full use of the existing workbench installation structure for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a machine tool center frame of the utility model (including a partial cross-section);

[0019] Figure 2 This is a schematic diagram of the top view of a center frame of a machine tool according to the utility model;

[0020] In the figure: 1. center frame base; 2. slope support seat; 3. support assembly; 301. sleeve; 302. support core rod; 303. adjusting screw; 304. adjusting knob; 305. limit groove; 306. limit bolt; 4. wheel frame; 5. support roller; 6. side plate; 7. auxiliary support roller; 8. connecting rod; 9. knurled nut; 10. bolt groove; 11. mounting bolt; 12. limit block; 13. lifting ring; 14. round hole; 15. limit end side plate; 16. adjustable handle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] like Figure 1 and Figure 2 As shown, a machine tool center frame includes a center frame base 1, and slope support seats 2 are symmetrically provided at both ends of the center frame base 1, and adjustable support components 3 are respectively provided on the slope support seats 2, and the oblique upward ends of the support components 3 are connected to support rollers 5 through wheel frames 4; the center frame base 1 is also provided with a side plate 6, and the side plate 6 is located between a pair of the slope support seats 2 and the height does not exceed the slope support seats 2, and a plurality of auxiliary support rollers 7 are also provided on one side of the side plate 6; the center frame base 1 is also provided with a bolt groove 10, and the bolt groove 10 is connected to the machine tool workbench through the mounting bolts 11.

[0024] The center frame of this machine tool is easy to install and use by improving its connection installation and support methods. The support range of the supporting roller can be adjusted over a wide range to meet the support of workpieces of various sizes. It also has a simple structure, occupies less space, and can be directly installed on the machine tool workbench.

[0025] The slope support seat 2 can provide a support slope with a stable angle, so that the central axis of the support assembly 3 is arranged tilted, and the symmetrical arrangement can make the central axes of a pair of the support assemblies 3 intersect at one point, which is conducive to supporting the workpiece. The support roller 5 is a freely rotatable roller structure, which is installed at the end of the support assembly 3, plays a rolling support role, and can also change the support position under the adjustment of the support assembly 3.

[0026] The auxiliary support rollers 7 provided on the side plates 6 can also support the workpieces. For workpieces that are larger, heavier, or with varying diameters, in addition to being supported by a pair of the support rollers 5, they can also be supported by the auxiliary support rollers 7, further improving the stability of the support. The structure of the auxiliary support rollers 7 is somewhat different from that of the support rollers. The support rollers 5 are wheel-shaped structures, while the auxiliary support rollers are roller-shaped structures. They can better support the workpieces from the bottom by using their larger contact surfaces, and have better bearing capacity. For some workpieces whose diameters do not change much or are columnar, the auxiliary support rollers may not be used for support.

[0027] The bolt groove 10 is set to directly connect the mounting bolt 11 and fasten it on the machine tool workbench. The mounting bolt 11 is a T-bolt. Usually, there are many T-slots on the machine tool workbench, and these T-slots are provided with T-bolts. The base of the center frame can be directly placed on the machine tool workbench, and the T-bolts can be fastened by gaskets and nuts after passing through the bolt grooves. This installation method is very simple and can make full use of the existing workbench installation structure for installation. When the center frame is set on the workbench, self-centering clamps and tailstocks are respectively provided on both sides. The self-centering clamps and tailstocks are used to clamp and fix workpieces with longer lengths. The center frame provides rolling support for the workpiece in the middle.

[0028] Furthermore, the support assembly 3 includes a sleeve 301 arranged on the slope support seat 2, a slidable support core rod 302 is sleeved in the sleeve 301, one end of the support core rod 302 is exposed from the sleeve 301 and is connected to the wheel frame 4, and the other end of the support core rod 302 is internally threadedly connected to an adjusting screw 303, and the adjusting screw 303 has an adjusting knob 304 arranged at the outer end of the sleeve 301.

[0029] By turning the adjusting knob 304, the adjusting screw 303 can be driven to rotate, so that the supporting core rod 302 can be retracted or extended, thereby adjusting the position of the supporting roller 5. A relatively long internal threaded hole is provided on the central axis of the supporting core rod 302, which can be connected to the adjusting screw 303.

[0030] In some embodiments, the sleeve 301 is a half-and-half structure, connected as a whole by bolts and installed on the slope support seat, which is convenient for installing internal parts. Sliding sealing rings are respectively provided at the connection points between the two ends of the sleeve and the support core rod and the adjusting screw.

[0031] Furthermore, a limiting groove 305 is provided along the length direction of the outer circumference of the support core rod 302, and a limiting bolt 306 is provided on the sleeve 301, and one end of the limiting bolt 306 is located in the limiting groove 305. Through the arrangement of the limiting bolt 306 and the limiting groove 305, the circumferential movement of the support core rod 302 can be limited to prevent it from rotating with the rotation of the adjusting screw 303, and the length direction can also be limited to prevent the support core rod 302 from completely falling out during the twisting process. The arrangement of the limiting groove 305 also limits the travel range of the support core rod 302 on the axis.

[0032] Furthermore, the adjustable range of the diameter of the circumscribed circle of a pair of supporting rollers 5 is 70 to 250 mm, that is, the range of sizes of workpieces that can be supported; the inclination angle of the slope support seat is 25 to 35°, and the preferred angle with the horizontal line is 30°.

[0033] Furthermore, the auxiliary support roller 7 is connected to the side plate 6 via a connecting rod 8, and the connecting rod 8 is provided with an external thread and connected with a knurled nut 9. Through such a configuration, the knurled nut 9 can be used to adjust the position of the connecting rod 8 to extend, thereby adjusting the support position of the auxiliary support roller 7, so that the auxiliary support roller 7 and the support roller 5 are in the same support plane, or the auxiliary support roller 7 and the support roller 5 are not in the same support plane, forming a misalignment in space, so as to support a workpiece with a variable diameter.

[0034] The axis of the auxiliary support roller 7 is arranged horizontally, and a pair of the auxiliary support rollers 7 is arranged near the middle of the side plate.

[0035] Furthermore, the bolt slot 10 is a U-shaped open slot, that is, it has an opening on the side, and such a configuration facilitates its connection with the mounting bolt 11; the bolt slot is one arranged in the middle, or two arranged symmetrically on both sides.

[0036] Furthermore, a limit block 12 is provided at the bottom of the center frame base 1, and the limit block 12 is connected to the center frame base 1 through a countersunk screw. When the center frame is installed on the workbench, the limit block 12 is also in the T-slot of the workbench, forming a hard limit with the limit block in the T-slot.

[0037] Furthermore, the side panel 6 is arranged on the side edge of the center frame base 1, and the side panel 6 and the slope support seat 2 are integrally formed metal structural parts with the center frame base 1. The center frame manufactured in this way has high structural strength, good stability and durability.

[0038] Furthermore, the side of the center frame base 1 is provided with a plurality of lifting rings 13, and the side plate 6 is provided with a plurality of circular holes 14. The entire center frame can be lifted by using the lifting rings 13 and the circular holes 14, so as to facilitate the transportation of the center frame. The circular holes 14 can also reduce the weight of the center frame.

[0039] In some embodiments, a limit end side plate 15 is further provided on one side of the bottom of the center frame base 1, and an adjustable handle 16 is provided on the limit end side plate 15. When the center frame is installed on a machine tool workbench of certain sizes and types, the limit end side plate 15 can be located on the side of the workbench to form a side limit.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A machine tool center frame, characterized in that: It includes a center frame base, and slope support seats are symmetrically provided at both ends of the center frame base, and adjustable support components are respectively provided on the slope support seats, and the oblique upward ends of the support components are connected to support rollers through wheel frames; the center frame base is also provided with a side plate, which is located between a pair of the slope support seats and has a height not exceeding the slope support seats, and one side of the side plate is also provided with a plurality of auxiliary support rollers; the center frame base is also provided with a bolt groove, and the bolt groove is connected to the machine tool workbench through mounting bolts.

2. The machine tool center frame according to claim 1, characterized in that: The support assembly includes a sleeve arranged on the slope support seat, a slidable support core rod is sleeved in the sleeve, one end of the support core rod is exposed from the sleeve and connected to the wheel frame, and the other end of the support core rod is internally threadedly connected to an adjusting screw, and the adjusting screw has an adjusting knob arranged at the outer end of the sleeve.

3. The machine tool center frame according to claim 2, characterized in that: A limiting groove is provided on the outer circumference of the supporting core rod along the length direction, and a limiting bolt is provided on the sleeve, and one end of the limiting bolt is located in the limiting groove.

4. The machine tool center frame according to claim 1, characterized in that: The adjustable range of the diameter of the circumscribed circle of the pair of supporting rollers is 70 to 250 mm, and the inclination angle of the slope supporting seat is 25 to 35 degrees.

5. The machine tool center frame according to claim 1, characterized in that: The auxiliary support roller is connected to the side plate through a connecting rod, and the connecting rod is provided with an external thread and connected with a knurled nut.

6. The center frame of the machine tool according to claim 1, characterized in that: The bolt groove is a U-shaped opening groove, and the bolt groove is one arranged in the middle, or two arranged symmetrically on both sides.

7. The center frame of the machine tool according to claim 1, characterized in that: A limiting block is also provided at the bottom of the center frame base, and the limiting block is connected to the center frame base via a countersunk screw.

8. The machine tool center frame according to claim 1, characterized in that: The side plates are arranged on the side edges of the center frame base, and the side plates, the slope support seat and the center frame base are integrally formed metal structural parts.

9. The center frame of the machine tool according to claim 1, characterized in that: The side surface of the center frame base is also provided with a plurality of hanging rings, and the side plate is provided with a plurality of circular holes.

10. The machine tool center frame according to claim 1, characterized in that: A limiting end side plate is also provided on one side of the bottom of the center frame base, and an adjustable handle is provided on the limiting end side plate.

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