Boring machine

Abstract

The boring machine comprises a machine body, a spindle box arranged on the machine body, a ram arranged in the spindle box in a penetrating mode, a first driving piece pushing the ram to move, a boring rod rotationally connected to the ram and a second driving piece driving the boring rod to rotate, the ram is arranged in the spindle box in a sliding mode, and the first driving piece is arranged in the spindle box. The driving end of the first driving piece is connected to the ram, one end of the boring rod penetrates through the ram and extends out of the end, away from the spindle box, of the ram, and the ram is arranged in a regular polygon shape. Due to the fact that the ram is of the polygonal structure, the ram cannot rotate relative to the spindle box, the relative position of the ram and the spindle box is not prone to change in the rotating process of the boring rod, the position of the boring rod can be kept stable, and the machining precision of the boring rod is not prone to being affected.

Description

Technical Field

[0001] This application relates to the technical field of boring machines, and particularly to a boring machine. Background Art

[0002] In the machinery industry, when machining the planes and holes of large workpieces, even those weighing more than dozens of tons, floor-type boring and milling machines are generally used. This is a large horizontal boring machine that can achieve the axial movement of the spindle for machining in the depth direction and can also be used as a milling machine for face milling.

[0003] The patent with the application number [application number not provided in the original text] discloses a numerically controlled floor-type boring machine directly driven by linear motors, including a machine body. A carriage is provided on the machine body, a column is fixed on the carriage, a carriage linear motor is installed between the machine body and the carriage, a spindle box is fixedly installed on the column, a ram is provided in the spindle box, a boring bar is provided in the ram, a support is fixed on the spindle box, a ram linear motor is installed between the support and the ram, an arc-shaped linear motor is also fixed on the support, a disc-shaped linear motor is fixed on the arc-shaped linear motor, a bracket is fixed on the disc-shaped linear motor, the boring bar is connected to a spline shaft passing through the arc-shaped linear motor and the disc-shaped linear motor, and a boring bar linear motor is installed between the spline shaft and the bracket. A spindle box lifting linear motor is installed between the column and the spindle box. A platform is fixedly installed on the carriage, column, and spindle box together. Guide devices and stop block locking devices are provided on the carriage linear motor, ram linear motor, spindle box lifting linear motor, and boring bar linear motor.

[0004] In the above solution, in order to increase the machining range of the boring machine, a ram that can move horizontally is provided on the spindle box. However, the ram in the above solution is circularly arranged, and a torsional force will be applied to the ram during the rotation of the boring bar. Since the ram is circularly arranged, the connection between the ram and the spindle box cannot be stable, resulting in the ram twisting during operation, thereby affecting the machining accuracy of the boring machine.

[0005] Therefore, a new technical solution needs to be proposed to solve the above problems. Summary of the Utility Model

[0006] In order to keep the connection between the ram and the spindle box stable, so that the accuracy of the boring and milling process is not easily affected, this application provides a boring machine.

[0007] A boring machine provided by this application adopts the following technical solutions:

[0008] A boring machine, comprising a machine body, a spindle box disposed on the machine body, a ram sleeved in the spindle box, a first driving member for pushing the ram to move, a boring bar rotatably connected to the ram, and a second driving member for driving the boring bar to rotate. The ram is slidably disposed in the spindle box, the first driving member is disposed in the spindle box, and a driving end of the first driving member is connected to the ram. One end of the boring bar penetrates through the ram and extends from an end of the ram away from the spindle box. The ram is provided in a regular polygon shape.

[0009] By adopting the above technical solution, by setting the ram as a polygonal structure, the ram will not rotate relative to the spindle box. During the rotation of the boring bar, the relative position between the ram and the spindle box is not likely to change, and the position of the boring bar can also be kept stable, so that the machining accuracy of the boring bar is not easily affected.

[0010] Optionally: A bottommost surface of the ram is horizontally arranged.

[0011] By adopting the above technical solution, the spindle box can stably support the ram.

[0012] Optionally: The ram is provided in a regular octagon shape, and a plurality of guide rails parallel to the length direction of the ram are arranged in the spindle box. The guide rails are arranged on inclined side walls of the ram.

[0013] By adopting the above technical solution, by applying forces towards the axis of the ram only to four side walls of the ram, stable limiting of the ram can be achieved, making the limiting of the ram more convenient, and at the same time enabling the ram to be stably arranged on the spindle box.

[0014] Optionally: A strengthening assembly for strengthening the ram is further arranged on the ram. The strengthening assembly includes a plurality of mounting rods slidably arranged on the spindle box and mounting sleeves detachably connected to the ram. The mounting sleeves are detachably connected to the mounting rods, and the mounting rods are arranged around the ram.

[0015] By adopting the above technical solution, after the depth that the boring bar needs to process increases, the strength of the ram can be enhanced through the strengthening assembly, so that when the extended length of the ram becomes larger, the position of the end of the ram away from the spindle box is not likely to sag.

[0016] Optionally: A plurality of mounting grooves are circumferentially formed on an end surface of the mounting sleeve, and magnetic attraction assemblies are arranged in the mounting grooves. Each magnetic attraction assembly includes a mounting block rotatably connected in the mounting groove and a first magnetic attraction member fixed on a side wall of the mounting block. A rotation axis of the mounting block is parallel to the axis of the boring bar, and the first magnetic attraction member is used for attracting to the surface of the ram.

[0017] By adopting the above technical solution, the position of the mounting sleeve relative to the ram is defined by the magnetic attraction component, so that the position of the mounting sleeve can be kept stable after being connected to the ram, thereby enabling the strengthening component to stably support the ram.

[0018] Optionally, a magnetic field shielding member is also coaxially arranged in the mounting groove, and a first magnetic attraction hole penetrates through the side wall of the magnetic field shielding member close to the ram.

[0019] By adopting the above technical solution, after the mounting block is rotated, the first magnetic attraction member moves away from the first magnetic attraction hole, thereby reducing the adsorption of the first magnetic attraction member to the ram and facilitating the disassembly of the mounting sleeve from the ram.

[0020] Optionally, a retaining ring is further fixed on the ram, and the mounting sleeve abuts against one end of the retaining ring away from the headstock.

[0021] By adopting the above technical solution, when the mounting sleeve is installed on the ram, the retaining ring can be used to define the installation position of the mounting sleeve, making it easier to determine the installation position of the mounting sleeve.

[0022] Optionally, a plugging hole is formed on the end face of the mounting sleeve close to the headstock, the mounting rod is inserted into the plugging hole, a second magnetic attraction member is arranged on the end face of the mounting block close to the mounting rod, a second magnetic attraction hole is formed on the magnetic field shielding member, and when the first magnetic attraction member is attracted to the ram, the second magnetic attraction member is attracted to the mounting rod.

[0023] By adopting the above technical solution, after the mounting rod is connected to the mounting sleeve, the second magnetic attraction member applies a magnetic force to the mounting rod, thereby enabling the mounting sleeve and the mounting rod to be stably connected.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By setting the ram to be polygonal, the ram will not rotate relative to the headstock, enabling the ram to stably support the boring bar;

[0026] 2. By arranging a strengthening component to further support the ram, the ram is not prone to deformation after the extension length of the ram is increased, and the machining accuracy of the boring bar is not easily affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the present application embodiment for showing the installation position of the guide rail;

[0029] Figure 3This is a schematic diagram for demonstrating the installation sleeve structure in the embodiments of the present application.

[0030] In the figure, 1 is the bed body; 11 is the headstock; 12 is the guide rail; 2 is the ram; 21 is the first driving member; 22 is the retaining ring; 3 is the boring bar; 4 is the strengthening assembly; 41 is the installation sleeve; 411 is the installation groove; 412 is the insertion hole; 42 is the installation rod; 5 is the magnetic attraction assembly; 51 is the installation block; 52 is the first magnetic attraction member; 53 is the second magnetic attraction member; 6 is the magnetic field shielding member; 61 is the first magnetic attraction hole; 62 is the second magnetic attraction hole. Detailed implementation manners

[0031] The following further elaborates on the present application in conjunction with the attached drawings.

[0032] A boring machine disclosed in the present application, as Figure 1 shown, includes a bed body 1, a headstock 11 vertically moving on the bed body 1, a ram 2 passing through the headstock 11, a first driving member 21 for pushing the ram 2 to move, a boring bar 3 rotatably connected to the ram 2, and a second driving member for driving the boring bar 3 to rotate. The ram 2 horizontally slides within the headstock 11, and one end of the ram 2 extends out of the headstock 11. In this embodiment, the first driving member 21 selects a structure of a lead screw cooperating with a motor. The lead screw passes through the ram 2 and is in threaded cooperation with the ram 2 to drive the ram 2 to move. The boring bar 3 is arranged perpendicular to the ram 2 and rotates within the ram 2. One end of the boring bar 3 away from the first driving member 21 passes through the ram 2. In this embodiment, the second driving member selects a motor. The second driving member is arranged within the ram 2, and the driving end of the second driving member is connected to the boring bar 3 to drive the boring bar 3 to rotate.

[0033] As Figure 2 shown, the longitudinal section of the ram 2 perpendicular to its length direction is arranged in a regular octagon, and the lower end of the octagonal cross-section of the ram 2 is horizontally arranged. Four guide rails 12 for guiding the moving direction of the ram 2 are further installed within the headstock 11. The guide rails 12 are respectively arranged on four inclined side walls of the ram 2. The guide rails 12 are all in contact with the side walls of the ram 2 to guide the moving direction of the ram 2. The guide rails 12 can also limit the movement of the upper and lower end faces and two side faces of the ram 2, enabling the ram 2 to stably move along its length direction during movement. And without significant change in the overall strength of the ram 2, the maximum outer diameter of the cross-section of the ram 2 can be reduced, enabling the boring machine to process workpieces with smaller inner diameters.

[0034] As Figure 1 and Figure 3As shown, when the distance that the ram 2 extends out of the headstock 11 is too large, one end of the ram 2 away from the headstock 11 will undergo a certain deformation under the action of gravity, thus affecting the machining accuracy of the boring machine. Therefore, a strengthening component 4 for enhancing the overall strength of the ram 2 is also provided on the ram 2. The strengthening component 4 includes a mounting sleeve 41 sleeved on the ram 2 and a plurality of mounting rods 42 slidably arranged on the headstock 11. The mounting rods 42 are arranged around the ram 2, and each side wall of the ram 2 corresponds to one mounting rod 42. One end of the mounting rod 42 away from the headstock 11 is connected to the mounting sleeve 41. The mounting sleeve 41 is octagonal in shape, and the inner wall of the mounting sleeve 41 abuts against the ram 2. Six mounting grooves 411 are formed on the end face of the mounting sleeve 41 away from the headstock 11. The six mounting grooves 411 respectively correspond to one side wall of the mounting sleeve 41. Magnetic attraction components 5 for limiting the position of the mounting sleeve 41 are respectively installed in the mounting grooves 411. The magnetic attraction component 5 includes a mounting block 51 rotatably connected in the mounting groove 411 and a first magnetic attraction member 52 installed on the side wall of the mounting block 51. The first magnetic attraction member 52 is a magnet in this embodiment. The rotation axis of the mounting block 51 is parallel to the rotation axis of the boring bar 3. The mounting block 51 can rotate so that the first magnetic attraction member 52 approaches or moves away from the ram 2, realizing the attraction and separation between the first magnetic attraction member 52 and the ram 2, and enabling the mounting sleeve 41 to be stably sleeved on the ram 2.

[0035] Since the first magnetic member will cause the mounting sleeve 41 to also have magnetism when contacting the mounting sleeve 41, thus affecting the disassembly of the mounting sleeve 41 from the ram 2, a magnetic field shielding member 6 is also provided in the mounting groove 411. The magnetic field shielding member 6 is made of a material such as an aluminum sheet that can reduce magnetic field leakage in this embodiment. A first magnetic attraction hole 61 is also formed on the magnetic field shielding member 6. The first magnetic attraction hole 61 is arranged on the side wall of the magnetic field shielding member 6 close to the ram 2. Thus, when it is necessary to stably connect the mounting sleeve 41 to the ram 2, the mounting block 51 can be rotated so that the first magnetic member is located at the first magnetic attraction hole 61, enabling the first magnetic attraction member 52 to attract the ram 2 to limit the position of the mounting sleeve 41 relative to the ram 2. When disassembly is required, the mounting block 51 can be rotated so that the first magnetic member moves away from the first magnetic attraction hole 61, enabling the mounting sleeve 41 to be conveniently disassembled from the ram 2.

[0036] A plurality of insertion holes 412 are also formed on the end face of the mounting sleeve 41 close to the headstock 11. One end of the mounting rod 42 away from the headstock 11 is inserted into the insertion holes 412. A second magnetic attraction member 53 is installed on the end face of the mounting block 51 close to the mounting rod 42. A second magnetic attraction hole 62 is also formed on the magnetic field shielding member 6. When the first magnetic attraction member 52 is aligned with the first magnetic attraction hole 61, the second magnetic attraction member 53 is aligned with the second magnetic attraction hole 62, so that the second magnetic attraction member 53 attracts the mounting rod 42, enabling the mounting sleeve 41 to drive the mounting rod 42 to move synchronously when moving, thereby realizing the support of the mounting rod 42 for the ram 2.

[0037] As Figure 2 shown, a retaining ring 22 for defining the position of the mounting sleeve 41 is further provided on the ram 2. The retaining ring 22 is arranged at a position of the ram 2 away from the main spindle box 11. The end face of the mounting sleeve 41 close to the main spindle box 11 can abut against the end face of the retaining ring 22 away from the main spindle box 11. Thus, when the mounting sleeve 41 is connected to the ram 2, the mounting position of the mounting sleeve 41 can be defined, making the installation of the mounting sleeve 41 more convenient.

[0038] The implementation principle of this embodiment is as follows: When it is necessary to reinforce the ram 2, the mounting sleeve 41 is sleeved on the ram 2, the mounting rod 42 is moved towards the mounting sleeve 41 and inserted into the insertion hole 412. Then, the mounting block 51 is rotated so that the first magnetic attraction member 52 approaches the ram 2, causing the first magnetic attraction member 52 to be attracted to the ram 2 and the second magnetic attraction member 53 to be attracted to the mounting rod 42, and the ram 2 is supported by the mounting rod 42.

[0039] The embodiments of this specific implementation manner are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A boring machine, characterized in that: The invention comprises a bed (1), a spindle box (11) arranged on the bed (1), a ram (2) inserted into the spindle box (11), a first driving member (21) for driving the ram (2) to move, a boring bar (3) rotatably connected to the ram (2), and a second driving member for driving the boring bar (3) to rotate, wherein the ram (2) is slidably arranged in the spindle box (11), the first driving member (21) is arranged in the spindle box (11), the driving end of the first driving member (21) is connected to the ram (2), one end of the boring bar (3) is inserted into the ram (2) and extends from one end of the ram (2) away from the spindle box (11), and the ram (2) is arranged in the shape of a regular polygon.

2. A boring machine according to claim 1, characterized in that: The surface of the ram (2) located at the lowermost end is arranged horizontally.

3. A boring machine according to claim 1, characterized in that: The ram (2) is arranged in a regular octagonal shape, and a plurality of guide rails (12) parallel to the length direction of the ram (2) are arranged in the spindle box (11), and the guide rails (12) are arranged on the inclined side walls of the ram (2).

4. A boring machine according to claim 1, characterized in that: The ram (2) is also provided with a reinforcing assembly (4) for reinforcing the ram (2), the reinforcing assembly (4) comprising a plurality of mounting rods (42) slidably arranged on the spindle box (11), and a mounting sleeve (41) detachably connected to the ram (2), the mounting sleeve (41) being detachably connected to the mounting rods (42), and the mounting rods (42) being arranged around the ram (2).

5. A boring machine according to claim 4, characterized in that: A plurality of mounting grooves (411) are circumferentially formed on the end surface of the mounting sleeve (41), and a magnetic attraction component (5) is disposed in each of the mounting grooves (411). The magnetic attraction component (5) comprises a mounting block (51) rotatably connected to the mounting groove (411) and a first magnetic attraction component (52) fixed to a side wall of the mounting block (51), wherein the rotation axis of the mounting block (51) is parallel to the axis of the boring bar (3), and the first magnetic attraction component (52) is used to be attracted to the surface of the ram (2).

6. A boring machine according to claim 5, characterized in that: A magnetic field shielding component (6) is also coaxially arranged in the installation groove (411), and a first magnetic attraction hole (61) penetrates through the side wall of the magnetic field shielding component (6) close to the ram (2).

7. A boring machine according to claim 5, characterized in that: A retaining ring (22) is also fixed on the ram (2), and the mounting sleeve (41) abuts against an end of the retaining ring (22) away from the spindle box (11).

8. A boring machine according to claim 6, characterized in that: The mounting sleeve (41) is provided with a plug hole (412) on the end surface close to the spindle box (11), the mounting rod (42) is inserted into the plug hole (412), the mounting block (51) is provided with a second magnetic attraction component (53) on the end surface close to the mounting rod (42), the magnetic field shielding component (6) is provided with a second magnetic attraction hole (62), and when the first magnetic attraction component (52) is attracted to the slide (2), the second magnetic attraction component (53) is attracted to the mounting rod (42).

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