A flat rotating disc structure for a machining center

Abstract

The utility model provides a flat disc structure for a machining center, which belongs to the technical field of machine tool equipment. It solves the problem that the fixing of the boring tool and the flat disc on the existing machine tool requires manual clamping by workers, which not only causes inaccurate machining positioning, but also makes it impossible to automatically change tools through the tool magazine. The utility model includes a spindle box, a spindle rotatably arranged on the spindle box, a rotating drive member driving the spindle to rotate, and a flat disc body coaxially connected to the spindle; the flat disc body includes a fixed disc and a tool holder, the fixed disc is coaxially connected to the spindle, the tool holder is arranged on the fixed disc by a slider to slide radially along the spindle, the axis of the tool holder is parallel to the axis of the spindle, and a translation drive member is also provided on the fixed disc to drive the tool holder to translate, so that the axis of the tool holder coincides or offsets with the axis of the spindle. The advantage of the utility model is that it can cooperate with the tool magazine to realize the automatic installation and tool change of various types of tools such as boring and milling, and can realize boring, milling, drilling, tapping and other multi-process processing, with a high degree of automation.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool equipment and relates to a flat rotating disc structure of a machining center. Background Art

[0002] The boring and milling machine integrates boring and milling on the same machine tool, that is, the machine tool has both boring cutters and milling cutters. The existing flat rotating disk is provided with a tool holder coaxial with the spindle for installing the milling cutter. The machine tool is also equipped with a tool magazine. The milling cutter and the tool holder are used in conjunction with each other, and the milling cutter has the function of automatically replacing the milling cutter.

[0003] The boring tool requires workers to manually adjust the offset distance between the boring tool and the spindle, so as to adjust the processing radius of the boring tool. The fixing method of the boring tool and the flat turntable also requires workers to manually clamp them. Not only is the processing positioning inaccurate, but also the tool cannot be automatically changed through the tool magazine. Utility Model Content

[0004] The utility model aims at solving the above problems existing in the existing horizontal rotating disc and proposes a horizontal rotating disc structure in which a boring cutter and a milling cutter share a tool holder and can automatically change tools through a tool magazine.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A horizontal rotating disk structure of a machining center comprises a spindle box, a spindle rotatably arranged on the spindle box, a rotating driving member driving the spindle to rotate, and a horizontal rotating disk body coaxially fixed to the spindle; characterized in that the horizontal rotating disk body comprises a fixed disk and a tool holder, the fixed disk is coaxially fixed to the spindle, the tool holder is arranged on the fixed disk for radial sliding along the spindle via a slider, the axis of the tool holder is parallel to the axis of the spindle, and a translation driving member is also provided on the fixed disk for driving the tool holder to translate so that the axis of the tool holder coincides with or is offset from the axis of the spindle; a tool changing station is also provided on the fixed disk, the tool changing station is eccentrically arranged with the spindle and is located on the moving path of the tool holder, and the tool holder moves to the tool changing station for tool changing.

[0007] In the above-mentioned rotating disk structure of a machining center, a tool broaching device is also provided in the fixed disk, which includes a pull rod slidably arranged in the inner cavity of the tool holder and a tool broaching driving mechanism for driving the pull rod to translate. The tool broaching driving mechanism is used to push the pull rod to translate in a direction close to the tool for unloading the tool.

[0008] In the above-mentioned flat rotating disk structure of a machining center, the tool pulling drive mechanism includes a piston chamber opened in the fixed disk, a piston movably arranged in the piston chamber, and a piston rod fixedly connected to the piston. When the tool holder moves to the tool changing station, the piston and the piston rod are coaxially arranged with the above-mentioned pull rod, and a return spring is provided in the piston chamber. One end face of the piston abuts against the return spring, and the return spring is used to push the piston and the piston rod to translate in a direction away from the pull rod. The other end face of the piston inputs pressure oil to push the piston and the piston rod to translate in a direction close to the pull rod until they abut against the pull rod and push the pull rod to translate for unloading the tool.

[0009] In the above-mentioned flat rotating disk structure of a machining center, a slide groove is provided on the fixed disk, a slider is embedded in the slide groove and moves back and forth along the slide groove, and the tool holder is fixed on the slider.

[0010] In the above-mentioned translation disk structure of a machining center, the translation drive component includes a translation motor, a screw rod, and a nut seat. The screw rod is rotatably arranged in a fixed disk, and the screw rod axis extends along the translation direction of the slider. The nut seat sleeve is arranged on the screw rod and is fixedly connected to the slider. The output shaft of the translation motor is transmission-connected to the screw rod for driving the screw rod to rotate, so as to drive the nut seat and the slider to translate.

[0011] In the above-mentioned flat rotating disk structure of a machining center, a locking device is also provided between the slider and the fixed disk. When the slider moves into position, the locking device is used to lock the position of the slider. The locking device includes a plurality of recessed holes opened on the slider and piston rods movably embedded in the recessed holes. The depth of the recessed holes is greater than the height of the piston rod. The fixed disk blocks the open ends of the recessed holes and inputs pressurized oil into the recessed holes so that the piston block presses and locks the slider on the fixed disk.

[0012] In the above-mentioned flat rotating disk structure of a machining center, a plurality of recessed holes are arranged at intervals along the translation direction of the slider, a piston column is correspondingly embedded in each recessed hole, and oil grooves connecting the recessed holes in the same direction are opened.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model can cooperate with the tool magazine to realize the automatic installation and tool change of various types of tools such as boring and milling, and can realize multiple processes such as boring, milling, drilling, and tapping. It has a high degree of automation and greatly improves the processing efficiency.

[0015] 2. The locking device can reliably lock the slider at any position, thereby ensuring the rigidity of the tool during processing, adapting to processing with large cutting forces, and effectively ensuring processing accuracy.

[0016] 3. The tool holder of the utility model is suitable for installing tools such as milling cutters and boring cutters. The tools are inserted into the tool holder through the tool handle to be fixed. When the tool holder moves to be coaxial with the spindle, the milling cutter, drill bit, etc. are installed on the tool holder for processing; when the tool holder moves away from the spindle center, the boring cutter is installed for processing, and the processing radius of the boring cutter is changed by adjusting the moving distance of the slider;

[0017] 4. When the tool holder moves to the tool changing position, the piston rod is coaxial with the pull rod in the tool holder, the piston moves to contact with the pull rod and pushes the pull rod to move horizontally for unloading the tool, and cooperates with the tool magazine on the machine tool to automatically change the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the flat rotating disk structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the flat rotating disk body of the utility model;

[0020] Figure 3 It is a cross-sectional view of the flat rotating disk of the utility model;

[0021] Figure 4 It is an enlarged cross-sectional view of the broach device of the utility model;

[0022] Figure 5 It is a schematic diagram of the translation drive member of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a slide block and a knife seat of the utility model.

[0024] In the figure, 1, spindle box; 2, fixed plate; 3, tool holder; 4, slider; 5, pull rod; 6, piston; 7, piston rod; 8, return spring; 9, translation motor; 10, screw rod; 11, nut seat; 12, piston column; 13, oil tank. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1 As shown, a turning disk structure of a machining center described in the utility model comprises a spindle box 1, a spindle rotatably arranged on the spindle box 1, a rotating driving member driving the spindle to rotate, and a turning disk body coaxially fixed to the spindle.

[0027] like Figure 2 and Figure 3As shown, the flat rotating disc body includes a fixed disc 2 and a tool holder 3. The fixed disc 2 is coaxially fixedly connected to the main shaft. The tool holder 3 is set on the fixed disc 2 by a slider 4 along the radial sliding of the main shaft. The axis of the tool holder 3 is parallel to the axis of the main shaft. The fixed disc 2 is also provided with a translation drive for driving the tool holder 3 to translate so that the axis of the tool holder 3 coincides with or offsets the axis of the main shaft. The tool holder 3 is provided with a standard tool handle hole, which can be a standard type such as BT or HSK. The tool holder 3 cooperates with the tool magazine to replace tools with different processing requirements, such as boring tools, milling cutters, drills, tapping tools, etc., which can not only realize the integrated processing of multiple processes such as boring and milling, but also all tools can be automatically changed, which greatly improves the processing efficiency of the machine tool.

[0028] like Figure 4 As shown, a tool changing station is also provided on the fixed disk 2, which is eccentrically arranged with the spindle and located on the moving path of the tool holder 3. The tool holder 3 moves to the tool changing station to change the tool. A tool broaching device is also provided in the fixed disk 2, which includes a pull rod 5 slidably arranged in the inner cavity of the tool holder 3 and a tool broaching driving mechanism for driving the pull rod 5 to translate, and the tool broaching driving mechanism is used to push the pull rod 5 to translate in a direction close to the tool for unloading the tool.

[0029] The tool pulling drive mechanism includes a piston chamber opened in the fixed plate 2, a piston 6 movably arranged in the piston chamber, and a piston rod 7 fixedly connected to the piston 6. When the tool holder 3 moves to the tool changing station, the piston 6 and the piston rod 7 are coaxially arranged with the above-mentioned pull rod 5. A return spring 8 is provided in the piston chamber. One end face of the piston 6 abuts against the return spring 8. The return spring 8 is used to push the piston 6 and the piston rod 7 to translate in a direction away from the pull rod 5. The other end face of the piston 6 is input with pressure oil to push the piston 6 and the piston rod 7 to translate in a direction close to the pull rod 5 until they abut against the pull rod 5 and push the pull rod 5 to translate for tool unloading, and cooperate with the tool magazine on the machine tool to perform automatic tool change.

[0030] like Figure 5 As shown, a slide groove is provided on the fixed plate 2, and the slide block 4 is embedded in the slide groove and moves back and forth along the slide groove, and the knife seat 3 is fixed on the slide block 4. The translation drive member includes a translation motor 9, a screw rod 10, and a nut seat 11. The screw rod 10 is rotatably arranged in the fixed plate 2, and the axis of the screw rod 10 extends along the translation direction of the slide block 4. The nut seat 11 is sleeved on the screw rod 10 and fixedly connected to the slide block 4. The output shaft of the translation motor 9 is in transmission connection with the screw rod 10 for driving the screw rod 10 to rotate, so as to drive the nut seat 11 and the slide block 4 to translate.

[0031] like Figure 6As shown, a locking device is also provided between the slider 4 and the fixed plate 2. When the slider 4 moves into position, the locking device is used to lock the position of the slider 4. The locking device includes a plurality of concave holes provided on the slider 4, and a piston column 12 movably embedded in the concave holes. The depth of the concave holes is greater than the height of the piston column 12. The fixed plate 2 blocks the open ends of each concave hole and inputs pressure oil into the concave hole, so that the piston 6 can press and lock the slider 4 on the fixed plate 2. A plurality of concave holes are arranged at intervals along the translation direction of the slider 4. A piston column 12 is correspondingly embedded in each concave hole. An oil groove 13 connecting each concave hole is provided between each concave hole in the same direction. The slider 4 is locked by the locking device to ensure that the slider does not move when the tool is subjected to force, thereby ensuring the accuracy of the tool position and the processing accuracy, and providing the processing rigidity of the tool, which can adapt to the processing of large cutting forces.

[0032] It should be understood that in the claims and description of the utility model, all "including..." should be understood as an open-ended meaning, that is, its meaning is equivalent to "at least contains...", and should not be understood as a closed meaning, that is, its meaning should not be understood as "only includes...".

[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A flat turntable structure of a machining center, comprising a spindle box (1), a spindle rotatably arranged on the spindle box (1), a rotating driving member for driving the spindle to rotate, and a flat turntable body coaxially fixedly connected to the spindle; characterized in that: The horizontal rotating disk body comprises a fixed disk (2) and a tool holder (3), wherein the fixed disk (2) is coaxially fixedly connected to the main shaft, and the tool holder (3) is arranged on the fixed disk (2) by a slider (4) to slide radially along the main shaft, and the axis of the tool holder (3) is parallel to the axis of the main shaft. The fixed disk (2) is also provided with a translation driving member for driving the tool holder (3) to translate so that the axis of the tool holder (3) coincides with or deviates from the axis of the main shaft; the fixed disk (2) is also provided with a tool changing station, which is eccentrically arranged with the main shaft and is located on the moving path of the tool holder (3), and the tool holder (3) moves to the tool changing station to change the tool.

2. The flat turntable structure of a machining center according to claim 1, characterized in that: A tool broaching device is also provided in the fixed disk (2), and the tool broaching device comprises a draw rod (5) slidably arranged in the inner cavity of the tool holder (3), and a tool broaching driving mechanism for driving the draw rod (5) to translate, wherein the draw rod (5) is used to push the draw rod (5) to translate in a direction close to the tool for tool removal.

3. The flat turntable structure of a machining center according to claim 2, characterized in that: The broach driving mechanism comprises a piston chamber provided in a fixed plate (2), a piston (6) movably arranged in the piston chamber, and a piston rod (7) fixedly connected to the piston (6). When the tool holder (3) moves to the tool changing station, the piston (6) and the piston rod (7) are coaxially arranged with the above-mentioned pull rod (5). A return spring (8) is arranged in the piston chamber. One end face of the piston (6) abuts against the return spring (8). The return spring (8) is used to push the piston (6) and the piston rod (7) to translate in a direction away from the pull rod (5). Pressure oil is input into the other end face of the piston (6) to push the piston (6) and the piston rod (7) to translate in a direction close to the pull rod (5) until they abut against the pull rod (5) and push the pull rod (5) to translate for tool unloading.

4. The flat turntable structure of a machining center according to claim 1, characterized in that: The fixed plate (2) is provided with a slide groove, the slide block (4) is embedded in the slide groove and moves back and forth along the slide groove, and the knife seat (3) is fixed on the slide block (4).

5. The flat turntable structure of a machining center according to claim 1, characterized in that: The translation driving member comprises a translation motor (9), a screw rod (10), and a nut seat (11); the screw rod (10) is rotatably arranged in a fixed disk (2); the axis of the screw rod (10) extends along the translation direction of the slider (4); the nut seat (11) is sleeved on the screw rod (10) and fixedly connected to the slider (4); the output shaft of the translation motor (9) is transmission-connected to the screw rod (10) for driving the screw rod (10) to rotate, so as to drive the nut seat (11) and the slider (4) to translate.

6. The flat turntable structure of a machining center according to claim 1, characterized in that: A locking device is also provided between the slider (4) and the fixed plate (2). When the slider (4) moves into position, the locking device is used to lock the position of the slider (4). The locking device comprises a plurality of recessed holes formed on the slider (4) and piston rods (12) movably embedded in the recessed holes. The depth of the recessed holes is greater than the height of the piston rod (12). The fixed plate (2) blocks the open ends of the recessed holes and inputs pressure oil into the recessed holes so that the piston (6) presses the slider (4) against the fixed plate (2) and locks it.

7. The flat turntable structure of a machining center according to claim 6, characterized in that: A plurality of concave holes are arranged at intervals along the translation direction of the slider (4), a piston column (12) is correspondingly embedded in each concave hole, and an oil groove (13) connecting the concave holes is provided between the concave holes in the same direction.

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