A high-rigidity spindle structure for a five-axis machining center

Abstract

This utility model relates to the field of five-axis machining center technology and discloses a high-rigidity spindle structure for a five-axis machining center, comprising: a connecting assembly, which includes a fixed shaft, a connecting shaft, and a protective shell; the left side of the connecting shaft is movably connected to the interior of the fixed shaft, and the left side of the protective shell is movably connected to the right side of the connecting shaft; and a fixing assembly, which includes a movable rod, a compression spring, a plug rod, and a push rod; the top and bottom of the push rod extend to the outside of the protective shell, and the inner side of the movable rod is movably connected to the outside of the connecting shaft via a pivot. Through the connecting assembly, when fixing the connecting shaft, bolts are inserted into the interior of the fixed shaft, causing the fixed shaft to drive the connecting shaft to rotate, thus improving the stability of the connecting shaft and maintaining good rigidity. By providing a plug groove, the connecting shaft moves according to the movement trajectory provided by the plug groove during installation.

Description

Technical Field

[0001] This utility model relates to a high-rigidity spindle structure for a five-axis machining center, belonging to the technical field of five-axis machining centers. Background Technology

[0002] Five-axis machining is a type of CNC machine tool machining. The machine tools used in five-axis machining are usually called five-axis machine tools or five-axis machining centers. Five-axis machining is often used in the aerospace field to machine body parts, turbine parts and impellers with free-form surfaces. Five-axis machining requires changing different milling cutters depending on the workpiece being machined.

[0003] Chinese Patent Publication No. CN 214443366 U discloses a spindle structure for a five-axis machining center, including a housing and a spindle. The spindle is installed inside the housing and extends to both sides of the housing. A cylindrical mounting groove is provided at the rear end of the spindle, and a cylinder is installed within the cylindrical mounting groove. A circular through-slot is formed in the middle of the spindle end. A pull rod is connected to the end of the cylinder piston rod, and the pull rod is slidably connected within the circular through-slot. A milling cutter fixing mechanism is provided at the front end of the pull rod. A first annular fixing block is provided on the outer wall of the front end of the spindle, and a chuck is provided on the outer side of the first annular fixing block. In this five-axis machining center spindle structure, the cylinder drives the pull rod to move, thereby causing the cylinder to move a circular moving plate. The circular moving plate then drives a connecting rod and an adjusting block to move synchronously backward or forward. When the adjusting block moves backward, the pressing blocks of the two adjusting blocks clamp and fix the milling cutter.

[0004] The existing five-axis machining center uses bolts to clamp the milling cutter at the spindle end. However, when machining different parts, different sizes of milling cutters need to be replaced. When removing the bolts, special tools are required, which is a complicated process and inconvenient for workers to change.

[0005] To address this, a high-rigidity spindle structure for a five-axis machining center is proposed. Utility Model Content

[0006] In view of this, the present invention provides a high-rigidity spindle structure for a five-axis machining center to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0007] The technical solution of this utility model is achieved as follows: a high-rigidity spindle structure for a five-axis machining center, comprising:

[0008] A connecting assembly, comprising a fixed shaft, a connecting shaft, and a protective shell, wherein the left side of the connecting shaft is movably connected to the interior of the fixed shaft, and the left side of the protective shell is movably connected to the right side of the connecting shaft;

[0009] A fixing assembly includes a movable rod, a compression spring, a plug rod, and a push rod. The top and bottom of the push rod extend to the outside of the protective shell. The inner side of the movable rod is movably connected to the outside of the connecting shaft via a pivot. The inner side of the compression spring is fixedly connected to the outside of the connecting shaft, and the outer side of the compression spring is fixedly connected to the inner side of the movable rod. The outer side of the plug rod is fixedly connected to the inner side of the movable rod, and the inner side of the plug rod extends into the interior of the connecting shaft. The left side of the push rod contacts the right side of the movable rod.

[0010] More preferably, the fixed shaft has an insertion groove inside, and the left side of the connecting shaft is movably connected to the inside of the insertion groove.

[0011] More preferably, a bolt is movably connected to the right side of the connecting shaft, and the left side of the bolt extends into the interior of the fixed shaft.

[0012] More preferably, the surface of the fixed shaft is provided with a fixing groove, and the left side of the bolt is movably connected to the inside of the fixing groove.

[0013] More preferably, a milling cutter is fixedly connected inside the connecting shaft, and the inner side of the insert rod extends through the interior of the milling cutter.

[0014] More preferably, the surface of the milling cutter has a slot, and the inner side of the insert is movably connected to the inside of the slot.

[0015] More preferably, there are two movable rods and insert rods, which are respectively fixedly connected to the front and rear sides of the connecting shaft.

[0016] The present invention has the following advantages due to the adoption of the above technical solution:

[0017] I. This utility model improves the stability and maintains good rigidity of the connecting shaft by using a connecting component to fix the connecting shaft. When the connecting shaft is fixed, bolts are inserted into the fixed shaft to make the fixed shaft drive the connecting shaft to rotate. By setting a plug groove, the connecting shaft moves according to the movement trajectory provided by the plug groove during installation.

[0018] Second, this utility model uses a fixing component to address the varying precision requirements when processing parts of different specifications. When replacing the milling cutter, the movable rod is pushed inward, causing the insert rod to move outward, facilitating the replacement of the milling cutter. After replacement, the milling cutter is reinserted and fixed by the insert rod, preventing loosening during use and potential injury.

[0019] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the insertion slot structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the fixed shaft structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the connecting shaft structure of this utility model;

[0025] Figure 5 This is a schematic cross-sectional view of the fixed shaft structure of this utility model;

[0026] Figure 6 For the present utility model Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0027] Reference numerals: 101, fixed shaft; 102, connecting shaft; 103, protective shell; 104, insertion groove; 105, bolt; 106, fixing groove; 201, movable rod; 202, compression spring; 203, insertion rod; 204, push rod; 205, milling cutter; 206, slot. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] Example 1

[0031] like Figure 1-4 As shown, this utility model embodiment provides a high-rigidity spindle structure for a five-axis machining center, including: a connecting assembly, which includes a fixed shaft 101, a connecting shaft 102, and a protective shell 103. The left side of the connecting shaft 102 is movably connected to the interior of the fixed shaft 101, and the left side of the protective shell 103 is movably connected to the right side of the connecting shaft 102. The interior of the fixed shaft 101 is provided with a insertion groove 104, and the left side of the connecting shaft 102 is movably connected to the interior of the insertion groove 104. The right side of the connecting shaft 102 is movably connected with a bolt 105, and the left side of the bolt 105 extends into the interior of the fixed shaft 101. The surface of the fixed shaft 101 is provided with a fixing groove 106, and the left side of the bolt 105 is movably connected to the interior of the fixing groove 106.

[0032] By using the connecting assembly, when fixing the connecting shaft 102, the bolt 105 is inserted into the interior of the fixed shaft 101, so that the fixed shaft 101 drives the connecting shaft 102 to rotate, thereby improving the stability of the connecting shaft 102 and maintaining good rigidity of the connecting shaft 102. By setting the insertion groove 104, when installing the connecting shaft 102, the connecting shaft 102 moves according to the movement trajectory provided by the insertion groove 104.

[0033] Example 2

[0034] like Figure 5-6 As shown, in one embodiment, the fixing assembly includes a movable rod 201, a compression spring 202, an insert rod 203, and a push rod 204. The top and bottom of the push rod 204 extend through the outer side of the protective shell 103. The inner side of the movable rod 201 is movably connected to the outer side of the connecting shaft 102 via a pivot. The inner side of the compression spring 202 is fixedly connected to the outer side of the connecting shaft 102, and the outer side of the compression spring 202 is fixedly connected to the inner side of the movable rod 201. The outer side of the insert rod 203 is fixedly connected to the inner side of the movable rod 201. The inner side of rod 203 extends into the interior of connecting shaft 102. The left side of push rod 204 contacts the right side of movable rod 201. A milling cutter 205 is fixedly connected inside the connecting shaft 102. The inner side of insert rod 203 extends into the interior of milling cutter 205. A slot 206 is provided on the surface of milling cutter 205. The inner side of insert rod 203 is movably connected to the interior of slot 206. There are two movable rods 201 and insert rods 203. The two movable rods 201 and insert rods 203 are fixedly connected to the front and rear sides of connecting shaft 102, respectively.

[0035] By using a fixing component, different precision is required when machining parts of different specifications. When replacing the milling cutter 205, the movable rod 201 is pushed inward, and the movable rod 201 drives the insert rod 203 to move outward, making it convenient for the staff to replace the milling cutter 205. After replacement, the milling cutter 205 is reinserted and fixed by the insert rod 203 to prevent it from loosening during use and causing injury to personnel.

[0036] When this utility model is in operation: First, the connecting shaft 102 is inserted into the fixed shaft 101 and fixed with bolts 105. Then, the push rod 204 is pulled to the left. The push rod presses against the surface of the movable rod 201, causing the movable rod 201 to rotate outward. During the rotation, the insertion rod 203 rotates outward. At this time, milling cutters 205 of different specifications can be installed as needed. After the milling cutter 205 is inserted into the connecting shaft 102, the push rod 204 is released. The spring force of the compression spring 202 pushes the movable rod 201 to rotate inward, causing the insertion rod 203 to be inserted into the milling cutter 205, thus fixing the milling cutter 205 and improving the connection rigidity.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A high-rigidity spindle structure for a five-axis machining center, characterized in that, include: A connecting assembly, comprising a fixed shaft (101), a connecting shaft (102), and a protective shell (103), wherein the left side of the connecting shaft (102) is movably connected to the interior of the fixed shaft (101), and the left side of the protective shell (103) is movably connected to the right side of the connecting shaft (102); The fixing assembly includes a movable rod (201), a compression spring (202), an insert rod (203), and a push rod (204). The top and bottom of the push rod (204) extend to the outside of the protective shell (103). The inner side of the movable rod (201) is movably connected to the outside of the connecting shaft (102) via a pivot. The inner side of the compression spring (202) is fixedly connected to the outside of the connecting shaft (102). The outer side of the compression spring (202) is fixedly connected to the inner side of the movable rod (201). The outer side of the insert rod (203) is fixedly connected to the inner side of the movable rod (201). The inner side of the insert rod (203) extends into the interior of the connecting shaft (102). The left side of the push rod (204) contacts the right side of the movable rod (201).

2. The high-rigidity spindle structure of a five-axis machining center according to claim 1, characterized in that: The fixed shaft (101) has a plug groove (104) inside, and the left side of the connecting shaft (102) is movably connected to the inside of the plug groove (104).

3. The high-rigidity spindle structure of a five-axis machining center according to claim 1, characterized in that: A bolt (105) is movably connected to the right side of the connecting shaft (102), and the left side of the bolt (105) extends into the interior of the fixed shaft (101).

4. The high-rigidity spindle structure of a five-axis machining center according to claim 3, characterized in that: The surface of the fixed shaft (101) is provided with a fixing groove (106), and the left side of the bolt (105) is movably connected to the inside of the fixing groove (106).

5. The high-rigidity spindle structure of a five-axis machining center according to claim 1, characterized in that: A milling cutter (205) is fixedly connected inside the connecting shaft (102), and the inner side of the insert rod (203) extends through the inside of the milling cutter (205).

6. A high rigidity spindle structure of a five-axis machining center according to claim 5, characterized in that: The surface of the milling cutter (205) has a slot (206), and the inner side of the insert (203) is movably connected to the inside of the slot (206).

7. The high-rigidity spindle structure of a five-axis machining center according to claim 1, characterized in that: There are two movable rods (201) and insert rods (203), and the two movable rods (201) and insert rods (203) are respectively fixedly connected to the front and rear sides of the connecting shaft (102).

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