Spindle box for machining center

Abstract

The utility model discloses a main shaft box for a machining center, which comprises a machining center main shaft box body, and the surface of the machining center main shaft box body is provided with supporting guide rails which are symmetrically distributed and sliding blocks which are arranged on the corresponding supporting guide rails at equal intervals; the supporting assembly comprises a stabilizing plate installed on a main shaft box body of the machining center, stabilizing blocks perpendicular to the inner surface of the stabilizing plate, a stabilizing shaft perpendicularly installed between the opposite stabilizing blocks, and a supporting cylinder rotationally arranged on the outer side of the stabilizing shaft in a sleeving mode. The machining center spindle box body is provided with the design for sharing the stress needing to be borne by the sliding block, the supporting cylinder supports the rolling cylinder, the rolling cylinder and the supporting cylinder support the mounting plate and the accessories, the load performance is improved, the supporting plate and the limiting guide rail support the limiting rod and the mounting plate, the extrusion spring plays a buffering role, the instantaneous load force borne by the supporting plate is weakened, and the machining center spindle box body is protected. The limiting rod and the mounting plate are in a stable state, the acting force borne by the sliding block is reduced, and the sliding block is prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of spindle boxes for numerical control machining centers, in particular to a spindle box for a machining center. Background Art

[0002] A CNC machining center is a high-precision, high-efficiency CNC machine tool with a variety of processing methods, such as milling, drilling, boring, tapping, etc., suitable for processing complex parts. The spindle box is one of the important accessories of a CNC machining center. The spindle box is an important component for fixing the spindle. Its process performance directly affects the efficiency of itself and the spindle.

[0003] Guide rails and sliders are installed on the front of the spindle box. The sliders are connected to other devices of the CNC machining center, such as the saddle transition plate. The sliders share the force that the guide rails and sliders need to bear. Since the front of the spindle box only relies on the guide rails and the sliders thereon to bear the force, it is easy to increase the wear of the sliders and the guide rails, thereby reducing the service life. When the spindle box is in use, there is a design problem that there is no design on the front side to share the force that the slider needs to bear. For this reason, the present application proposes a spindle box for a machining center. Utility Model Content

[0004] The purpose of the utility model is to provide a spindle box for a machining center, so as to solve the problem in the background art that the front side of the spindle box does not share the force that the slider needs to bear.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions: a spindle box for a machining center, comprising

[0006] A spindle box of a machining center, wherein the surface of the spindle box of the machining center is provided with symmetrically distributed support guide rails and sliders equidistantly installed on the corresponding support guide rails;

[0007] The support assembly includes a stabilizing plate mounted on the spindle housing of the machining center, a stabilizing block perpendicular to the inner surface of the stabilizing plate, a stabilizing shaft vertically mounted between the opposing stabilizing blocks, and a support cylinder rotatably sleeved on the outer side of the stabilizing shaft;

[0008] The compression assembly includes a support plate installed between the inner side wall of the stabilizing plate and the stabilizing block, an extrusion spring installed between the support plate and the stabilizing plate, and a limiting guide rail installed at the center position of the support plate surface;

[0009] The rolling assembly includes a limiting rod slidably connected to the limiting guide rail, a mounting plate connected to the limiting rod at the bottom end, a connecting block perpendicular to the mounting plate, a fixed shaft installed between the opposite connecting blocks, and a rolling cylinder sleeved on the outside of the fixed shaft.

[0010] Preferably, the sliders on the symmetrical support rails on the spindle housing of the machining center are respectively recorded as slider a and slider b, and the sliders a and sliders b distributed on the support rails on both sides correspond to each other one by one.

[0011] Preferably, the cross section of the stabilizing plate is a "U"-shaped structure, and a supporting protrusion is provided on the inner surface of the stabilizing plate, and the cross section of the supporting protrusion is a semicircular plate shape.

[0012] Preferably, the centers of the stabilizing shaft and the supporting tube are on the same axis, the outer surface of the supporting tube is tangent to the outer surface of the supporting protrusion, and the axis of the stabilizing shaft is perpendicular to the axis of the supporting protrusion.

[0013] Preferably, a second limiting block is provided on the stabilizing block, and a first limiting block is provided on the inner side wall of the stabilizing plate and is opposite to and flush with the second limiting block.

[0014] Preferably, the top surface of the support plate matches the bottom surfaces of the second limit block and the first limit block, the limiting guide rail is located between the second limit block and the first limit block, and the limiting rod is provided with a rail groove that cooperates with the limiting guide rail.

[0015] Preferably, the mounting plate with a "U"-shaped cross-section includes opposing side plates and a horizontal plate located between the opposing side plates. The connecting blocks are distributed on the horizontal plate. The fixed axis and the center of the rolling cylinder are on the same axis. The outer surface of the rolling cylinder is tangent to the outer surface of the supporting cylinder. The axis of the fixed axis is perpendicular to the axis of the stabilizing axis.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the utility model, the spindle box of the machining center is designed to share the force that the slider needs to bear. The support cylinder supports the rolling cylinder, and the rolling cylinder and the support cylinder support the mounting plate and the above-mentioned accessories to increase the load performance. The support plate and the limiting guide rail support the limiting rod and the mounting plate. The extrusion spring plays a buffering role, weakening the instantaneous load force on the support plate, so that the limiting rod and the mounting plate are in a stable state, reducing the force borne by the slider, and avoiding damage to the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the spindle box of the utility model;

[0020] Figure 3 This is a side structural diagram of the spindle box of the present invention;

[0021] Figure 4 For the utility model Figure 3A schematic diagram of the enlarged structure of the middle part A;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the stabilizing plate of the present invention;

[0023] In the figure: 1. Spindle box of machining center; 11. Support guide rail; 12. Slider; 21. Mounting plate; 22. Limiting rod; 23. Connecting block; 24. Fixed shaft; 25. Rolling cylinder; 31. Stabilizing plate; 32. Stabilizing block; 33. Stabilizing shaft; 34. Support cylinder; 41. Extrusion spring; 42. Support plate; 43. Limiting guide rail; 311. Support protrusion; 312. First limit block; 321. Second limit block. DETAILED DESCRIPTION

[0024] 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.

[0025] Example

[0026] See also Figures 1 to 5The utility model provides a technical solution: a spindle box for a machining center, comprising a spindle box body 1 of the machining center, symmetrically distributed support guide rails 11 and sliders 12 equidistantly installed on the corresponding support guide rails 11 on the surface of the spindle box body 1 of the machining center, the support guide rails 11 and the spindle box body 1 of the machining center are screwed together, and the sliders 12 slide along the length direction of the support guide rails 11; a support assembly, comprising a stabilizing plate 31 installed on the spindle box body 1 of the machining center, a stabilizing block 32 perpendicular to the inner surface of the stabilizing plate 31, a stabilizing shaft 33 vertically installed between the opposing stabilizing blocks 32, and a rotatable sleeve on the stabilizing shaft 33. The outer support cylinder 34, the stabilizing plate 31 and the machining center spindle box 1 are screwed together by bolts, the stabilizing plate 31 and the stabilizing block 32 are connected by welding, and the stabilizing shaft 33 and the stabilizing block 32 are screwed together by screws. The support cylinder 34 rotates with the stabilizing shaft 33. The support cylinder 34 supports the rolling cylinder 25 and the mounting plate 21, and then supports the machining center components installed with the mounting plate 21, such as the saddle transition plate, to increase the load-bearing design, reduce the load on the support guide rail 11 and the slider 12, and avoid the support guide rail 11 and the slider 12 from being damaged by wear; the compression assembly includes a mounting plate installed between the inner wall of the stabilizing plate 31 and the stabilizing block 32 The support plate 42 is arranged at the intermediate position, the extrusion spring 41 is installed between the support plate 42 and the stabilizing plate 31, and the limiting guide rail 43 is installed at the center position of the surface of the support plate 42. The two ends of the extrusion spring 41 are respectively connected to the support plate 42 and the stabilizing plate 31. The limiting guide rail 43 is welded to the support plate 42. The limiting rod 22 is slidably connected to the limiting guide rail 43. The support plate 42 and the limiting guide rail 43 support the limiting rod 22 and the mounting plate 21. The extrusion spring 41 plays a buffering role, weakening the instantaneous load force on the support plate 42, so that the limiting rod 22 and the mounting plate 21 are in a stable state; the rolling assembly includes the limiting rod 22 slidably connected to the limiting guide rail 43, the bottom end and the limiting guide rail 43. The mounting plate 21 connected by the limiting rod 22, the connecting block 23 perpendicular to the mounting plate 21, the fixed shaft 24 installed between the opposing connecting blocks 23, and the rolling cylinder 25 sleeved on the outside of the fixed shaft 24, the limiting rod 22 and the mounting plate 21 are welded and connected, the limiting rod 22 is a rectangular structure, and a slot that cooperates with the limiting guide rail 43 is opened on the limiting rod 22, the connecting block 23 is welded and connected to the mounting plate 21, the connecting block 23 and the fixed shaft 24 are screwed together, the rolling cylinder 25 presses down the support cylinder 34, and the support cylinder 34 supports the rolling cylinder 25. The friction between the rolling cylinder 25 and the support cylinder 34 is small, and does not affect the movement of the rolling cylinder 25.

[0027] In this embodiment, the sliders 12 on the symmetrical support guide rails 11 on the spindle box 1 of the machining center are respectively recorded as slider a and slider b. The sliders a and slider b on the support guide rails 11 on both sides correspond to each other one by one. There are three sliders a and three sliders b on the support guide rails 11 on both sides of the spindle box 1 of the machining center. The number of sliders 12 on the support guide rail 11 on a single side can be increased according to actual needs to increase the load-bearing tolerance performance.

[0028] In this embodiment, the cross-section of the stabilizing plate 31 is a "U"-shaped structure, and a supporting protrusion 311 is provided on the inner surface of the stabilizing plate 31. The cross-section of the supporting protrusion 311 is a semicircular plate shape. The supporting protrusion 311 is welded to the stabilizing plate 31, and the supporting protrusion 311 supports the supporting tube 34. The centers of the stabilizing shaft 33 and the supporting tube 34 are on the same axis. The outer surface of the supporting tube 34 is tangent to the outer surface of the supporting protrusion 311, which does not affect the rolling of the supporting tube 34. The axis of the stabilizing shaft 33 is perpendicular to the axis of the supporting protrusion 311.

[0029] In this embodiment, a second limit block 321 is provided on the stabilizing block 32, and the stabilizing block 32 is welded to the second limit block 321. The inner wall of the stabilizing plate 31 is provided with a first limit block 312 which is opposite to and flush with the second limit block 321. The stabilizing plate 31 is welded to the first limit block 312. The second limit block 321 and the first limit block 312 limit the support plate 42. The top surface of the support plate 42 is consistent with the bottom surface of the second limit block 321 and the first limit block 312. The limiting guide rail 43 is located between the second limit block 321 and the first limit block 312. The limiting rod 22 is provided with a rail groove which cooperates with the limiting guide rail 43.

[0030] In this embodiment, the mounting plate 21 with a "U"-shaped cross-section includes opposing side plates and a horizontal plate located between the opposing side plates. The connecting blocks 23 are distributed on the horizontal plate. The fixed shaft 24 and the center of the rolling cylinder 25 are on the same axis. The outer surface of the rolling cylinder 25 is tangent to the outer surface of the support cylinder 34. The axis of the fixed shaft 24 is perpendicular to the axis of the stabilizing shaft 33. The friction between the outer surface of the rolling cylinder 25 and the support cylinder 34 is small, which is conducive to the movement of the rolling cylinder 25 on the surface of the support cylinder 34.

[0031] The working principle and use process of this utility model:

[0032] Machining center accessories, such as saddle transition plate accessories, are installed on the slider 12 on the spindle box 1 of the machining center, and the support guide rail 11 and the slider 12 support the above components;

[0033] There are three sliders a and three sliders b on the support guide rails 11 on both sides of the spindle box 1 of the machining center. The number of sliders 12 on the support guide rail 11 on a single side can be increased according to actual needs to increase the load tolerance performance;

[0034] In addition, the mounting plate 21 is flush with the slider 12, and the mounting plate 21 and the above-mentioned accessories are combined by conventional methods (such as screw connection), and the mounting plate 21 supports the above-mentioned accessories;

[0035] The support cylinder 34 supports the rolling cylinder 25. The outer surface of the rolling cylinder 25 is tangent to the outer surface of the support cylinder 34. The friction between the outer surface of the rolling cylinder 25 and the support cylinder 34 is small, which does not affect the movement of the rolling cylinder 25 on the surface of the support cylinder 34. The rolling cylinder 25 and the support cylinder 34 support the mounting plate 21 and the above-mentioned accessories, thereby increasing the load performance.

[0036] The limiting rod 22 is slidably connected to the limiting guide rail 43. The support plate 42 and the limiting guide rail 43 support the limiting rod 22 and the mounting plate 21. The extrusion spring 41 acts as a buffer to reduce the instantaneous load force on the support plate 42, so that the limiting rod 22 and the mounting plate 21 are in a stable state.

[0037] To sum up: the spindle box 1 of the machining center is designed to share the force that the slider 12 needs to bear. The support cylinder 34 supports the rolling cylinder 25. The rolling cylinder 25 and the support cylinder 34 support the mounting plate 21 and the above-mentioned accessories to increase the load performance. The support plate 42 and the limiting guide rail 43 support the limiting rod 22 and the mounting plate 21. The extrusion spring 41 plays a buffering role, reducing the instantaneous load force on the support plate 42, so that the limiting rod 22 and the mounting plate 21 are in a stable state, reducing the force borne by the slider 12, and avoiding damage to the slider 12.

[0038] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spindle box for a machining center, characterized by: include A machining center spindle housing (1), wherein the surface of the machining center spindle housing (1) is provided with symmetrically distributed support guide rails (11) and sliders (12) equidistantly mounted on the corresponding support guide rails (11); A support assembly includes a stabilizing plate (31) mounted on a spindle housing (1) of a machining center, a stabilizing block (32) perpendicular to the inner surface of the stabilizing plate (31), a stabilizing shaft (33) vertically mounted between the opposing stabilizing blocks (32), and a support cylinder (34) rotatably sleeved on the outer side of the stabilizing shaft (33); The compression assembly includes a support plate (42) installed between the inner side wall of the stabilizing plate (31) and the stabilizing block (32), an extrusion spring (41) installed between the support plate (42) and the stabilizing plate (31), and a limiting guide rail (43) installed at the center of the surface of the support plate (42); The rolling assembly comprises a limiting rod (22) slidably connected to a limiting guide rail (43), a mounting plate (21) whose bottom end is connected to the limiting rod (22), a connecting block (23) perpendicular to the mounting plate (21), a fixed shaft (24) installed between the opposite connecting blocks (23), and a rolling cylinder (25) sleeved on the outside of the fixed shaft (24).

2. The spindle box for a machining center according to claim 1, characterized in that: The sliders (12) on the symmetrical support guide rails (11) on the spindle housing (1) of the machining center are respectively marked as slider a and slider b, and the sliders a and sliders b distributed on the support guide rails (11) on both sides correspond to each other one by one.

3. The spindle box for a machining center according to claim 1, characterized in that: The cross section of the stabilizing plate (31) is a "U"-shaped structure. The inner surface of the stabilizing plate (31) is provided with a supporting protrusion (311). The cross section of the supporting protrusion (311) is in the shape of a semicircular plate.

4. The spindle box for a machining center according to claim 3, characterized in that: The centers of the stabilizing shaft (33) and the supporting cylinder (34) are on the same axis, the outer surface of the supporting cylinder (34) is tangent to the outer surface of the supporting protrusion (311), and the axis of the stabilizing shaft (33) is perpendicular to the axis of the supporting protrusion (311).

5. The spindle box for a machining center according to claim 1, characterized in that: A second limiting block (321) is provided on the stabilizing block (32), and a first limiting block (312) is provided on the inner side wall of the stabilizing plate (31) and is opposite to and flush with the second limiting block (321).

6. The spindle box for a machining center according to claim 5, characterized in that: The top surface of the support plate (42) matches the bottom surfaces of the second limiting block (321) and the first limiting block (312); the limiting guide rail (43) is located between the second limiting block (321) and the first limiting block (312); and the limiting rod (22) is provided with a rail groove that matches the limiting guide rail (43).

7. The spindle box for a machining center according to claim 1, characterized in that: The mounting plate (21) having a U-shaped cross section includes opposing side plates and a horizontal plate located between the opposing side plates. The connecting blocks (23) are distributed on the horizontal plate. The center of the fixed shaft (24) and the center of the rolling cylinder (25) are on the same axis. The outer surface of the rolling cylinder (25) is tangent to the outer surface of the supporting cylinder (34). The axis of the fixed shaft (24) is perpendicular to the axis of the stabilizing shaft (33).

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