Double-spindle machine tool

Abstract

The utility model relates to a double-main-shaft machine tool which comprises a base, a machine shell, a first main shaft, a second main shaft and a workbench, and an opening and closing door composed of two laterally-pushed oppositely-opened door plates is arranged on the front side of the machine shell. The opposite locking mechanism is used for locking and connecting the two door plates and comprises a buckling assembly and a buckling piece, and the buckling assembly comprises a buckling piece and a positioning seat which are detachably and fixedly connected; when the two door plates are oppositely pulled to be closed, the two door plates are locked by oppositely clamping the buckling pieces and the buckling pieces; the limiting mechanism drives the buckling assembly to move up and down to be installed on the corresponding door handle through cooperation of an electromagnet power-on adsorption mode and a spring elastic reset mode. And when the electromagnet is electrified to attract the buckling assembly to move upwards in place, the buckling assembly is separated from the buckling piece. According to the utility model, the door can be opened and closed conveniently, quickly and stably, and the situation that the electromagnet fails to open and fails can be handled, so that the use safety and practical performance of the double-spindle machine tool are ensured.

Description

Technical Field

[0001] This utility model relates to the field of dual-spindle machine tool technology, specifically to a dual-spindle machine tool. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. It can move according to a pre-programmed program and process workpieces into a set shape or size. A twin-spindle machine tool installs two spindle heads in the machine housing, and can be programmed with the same or different programs to cut two sides of the workpiece separately. This allows for better workpiece processing, shortens processing time, and improves processing efficiency.

[0003] Twin-spindle machine tools generate a lot of chips during cutting, necessitating the installation of appropriate doors for protection. However, the spindle head generates vibrations during cutting, requiring the doors to be locked to prevent automatic opening or gaps between the two doors, thus preventing chips from splashing out from these gaps. Therefore, electromagnetic locking mechanisms are installed to lock the doors. However, traditional electromagnetic locking mechanisms often malfunction or fail, resulting in the doors being unable to unlock, causing significant inconvenience. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the present invention provides a dual-spindle machine tool, which can effectively solve the technical problems existing in the prior art.

[0005] The technical solution of this utility model is:

[0006] A dual-spindle machine tool includes: a base and a housing mounted on the base. A first spindle and a second spindle are mounted on both sides of the base, which can be moved left and right. Two sets of worktables are mounted between the first spindle and the second spindle by corresponding columns and can be raised and lowered. Side cutters for machining workpieces on the corresponding spindles are mounted on the worktables respectively. A switch door consisting of two side-push-opening door panels is provided on the front side of the housing. A corresponding door handle is provided on the outer side of the door panels.

[0007] The dual-spindle machine tool also includes a locking mechanism for locking two door panels. The locking mechanism includes a fastening assembly and a fastening element respectively installed on the corresponding door handles. The fastening assembly includes a fastening element and a positioning seat that are detachably and fixedly connected. When the two door panels are pulled closed, the two door panels are locked by the fastening element and the fastening element engaging with each other. The fastening assembly is fixedly installed on the corresponding door handle and can move up and down. When it moves up to the correct position, it disengages from the fastening element.

[0008] The limiting mechanism uses a combination of electromagnet energization and spring elastic reset to drive the fastening assembly to move up and down and install it on the corresponding door handle; when the electromagnet is energized and the fastening assembly moves to the correct position, the fastening assembly disengages from the fastening member.

[0009] The door handle on which the fastening assembly is installed has a corresponding groove on its side. The inner side of the positioning seat is embedded in the groove, and its outer side extends outward and is fixedly installed by locking the fastening assembly with a locking bolt.

[0010] The fastener has an n-shaped cross-section, and both ends of the fastener are integrally formed and folded inward to form corresponding limiting plates. The fastener includes a mounting part that is fixedly connected to the positioning seat and two spaced fasteners. The ends of the fasteners are integrally formed and protrude outward with corresponding wedges. When the door is closed, the fasteners are inserted into the fastener and their wedges are engaged inside the limiting plates.

[0011] The limiting mechanism includes an electromagnet fixedly installed in the groove. A corresponding positioning rod is installed through the through hole in the middle of the electromagnet and can move up and down. The lower end of the positioning rod is fixed to the positioning seat. A spring is sleeved on the outside of the positioning rod, with its end fixed to the electromagnet and the positioning seat respectively.

[0012] The dual-spindle machine tool also includes a set of vibration sensors respectively mounted on the first spindle and the second spindle, and all of the vibration sensors are electrically connected to the control circuit of the electromagnet.

[0013] The first spindle and the second spindle are respectively mounted on both sides of the base via corresponding slide rails and lead screw drives.

[0014] The two sets of worktables are respectively installed side by side on the column via corresponding slide rails and lead screw drives. The column is installed on the base and fixed to the side wall of the machine housing.

[0015] Advantages of this utility model:

[0016] 1) This utility model utilizes the fastening assembly and fastening piece of the two door panels to achieve rapid closing and locking of the door when it is pushed and pulled closed. It uses an electromagnet adsorption drive method and a spring compression elastic reset drive method to drive the fastening assembly to move up and down, thereby achieving rapid unlocking of the fastening assembly and fastening piece. The fastening assembly is detachable to deal with the unlocking of the fastening piece and fastening assembly in case of electromagnet failure or malfunction. It can not only achieve convenient, fast and stable opening and closing of the door, but also deal with the situation of electromagnet failure, thereby ensuring the safety and practical performance of the dual-spindle machine tool.

[0017] 2) This utility model folds the bottom of both ends of the n-shaped fastener inward to form a limiting plate. This plate can not only be used to fasten the fastener assembly to lock and fix the door panel, but also can be disengaged by moving the fastener assembly upward. Furthermore, the fastener assembly is designed as a detachable fastener and a positioning seat, and the fastener and positioning seat are fixedly connected by locking bolts. This not only ensures the stability of the connection between the fastener and the positioning seat, but also allows for easy and quick disengagement of the fastener assembly and the fastener when the electromagnet fails and cannot drive the fastener assembly upward. This effectively solves the problem of the door being unable to open when the electromagnet fails, thus improving the practical effect of this utility model.

[0018] 3) This utility model utilizes an electromagnet fixedly installed within a groove in the door handle. A positioning rod is installed through a through hole in the center of the electromagnet, allowing it to move up and down. The lower end of the positioning rod is fixed to a positioning seat, and a spring is fitted around the outside of the positioning rod, with its ends respectively fixed to the electromagnet and the positioning seat. The positioning rod limits the movement, and the spring supports and fixes the fastening assembly, ensuring its stability. The electromagnet, when energized, drives the fastening assembly upwards, and the spring, when compressed, elastically resets it, driving the fastening assembly downwards to engage or disengage the locking mechanism. This facilitates easy opening and closing of the door and ensures the safety of the dual-axis machine tool.

[0019] 4) Based on the characteristic that the spindle will generate vibration during the cutting of the workpiece, this utility model determines whether the spindle is processing by installing corresponding vibration sensors on the spindle. Then, the signal is transmitted to the control circuit. When there is vibration, the electromagnet is de-energized to ensure that the door is closed. When there is no vibration, the electromagnet is energized to unlock the door and facilitate opening and closing. This effectively prevents personnel injury caused by splashing chips due to erroneous opening when the spindle has not completely stopped, and ensures the safety of personnel operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the usage state of this utility model.

[0022] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0023] Figure 4 for Figure 3 A top-down view.

[0024] Figure 5 for Figure 3 A cross-sectional diagram.

[0025] Figure 6 This is a schematic diagram showing the state of the fastening assembly and fastening parts when the door panel of this utility model is opened.

[0026] Figure 7 This is a schematic diagram showing the state of the fastening assembly and fastening parts when the door panel is opened due to electromagnet failure in this utility model.

[0027] In the attached diagram: 1. Base; 2. Housing; 3. First spindle; 4. Second spindle; 5. Worktable; 6. Door panel; 7. Door handle; 8. Fastening assembly; 801. Fastening piece; 802. Positioning seat; 9. Fastening piece; 901. Limiting plate; 10. Electromagnet; 11. Spring; 12. Positioning rod; 13. Locking bolt; 14. Wedge block. Detailed Implementation

[0028] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0029] Example 1

[0030] refer to Figure 1-7 A dual-spindle machine tool includes: a base 1 and a housing 2 covering the base 1. A first spindle 3 and a second spindle 4 are mounted on both sides of the base 1, which can be moved left and right. Two sets of worktables 5 are mounted between the first spindle 3 and the second spindle 4 and supported by corresponding columns. Side cutters for machining workpieces on the corresponding spindles are mounted on the worktables 5. A switch door consisting of two side-push-opening door panels 6 is provided on the front side of the housing 2. A corresponding door handle 7 is provided on the outer side of the door panel 6.

[0031] The dual-spindle machine tool also includes a locking mechanism for locking the two door panels 6. The locking mechanism includes a fastening assembly 8 and a fastening element 9 respectively installed on the corresponding door handles 7. The fastening assembly 8 includes a fastening element 801 and a positioning seat 802 that are detachably and fixedly connected. When the two door panels 6 are pulled closed, the two door panels 6 are locked by the fastening element 801 and the fastening element 9 engaging with each other. The fastening assembly 8 can be moved up and down and fixedly installed on the corresponding door handle 7. When it moves up to the correct position, it disengages from the fastening element 9.

[0032] The limiting mechanism is driven by a combination of an electromagnet 10 for adsorption and a spring 11 for elastic reset to move the fastening assembly 8 up and down and install it on the corresponding door handle 7; when the electromagnet 10 is energized and the fastening assembly 8 moves up to the correct position, the fastening assembly 8 disengages from the fastening member 9.

[0033] This utility model utilizes the latching assembly 8 and the fastening piece 9 to fasten and lock the door quickly when the two door panels 6 are pushed and pulled to close. It uses the attraction drive of the electromagnet 10 and the compression elastic reset drive of the spring 11 to drive the latching assembly 8 to move up and down, thereby achieving quick unlocking of the latching assembly 8 and the fastening piece 9. Furthermore, the detachable design of the latching assembly 8 can be used to unlock the fastening piece 9 and the latching assembly 8 in case of failure or malfunction of the electromagnet 10. This not only enables convenient, fast and stable opening and closing of the door, but also addresses the situation where the electromagnet 10 fails to open, thus ensuring the safety and practicality of the dual-spindle machine tool.

[0034] The door handle 7 on which the fastening assembly 8 is installed has a corresponding groove on its side. The inner side of the positioning seat 802 is embedded in the groove, and its outer side extends outward and is fixedly installed by locking the fastening component 801 by locking it with the locking bolt 13.

[0035] The cross-section of the fastening member 9 is n-shaped, and the bottom of both ends of the fastening member 9 is integrally formed and folded inward to form corresponding limiting plates 901; the fastening member 801 includes a mounting part fixedly connected to the positioning seat 802 and two fastening heads spaced apart, and the ends of the fastening heads are integrally formed and protruded outward with corresponding wedges 14; when the door is closed, the fastening heads are inserted into the fastening member 9 and the wedges 14 are engaged inside the limiting plate 901.

[0036] This invention uses an n-shaped fastener 9 with its two ends folded inward to form a limiting plate 901. This plate can not only be used to fasten the fastener assembly 8 to lock and fix the door panel 6, but also to disengage the fastener assembly 8 from the fastener 9 by moving the fastener assembly 8 upward. Furthermore, the fastener assembly 8 is configured as a detachable fastener 801 and a positioning seat, and is fixedly connected by locking bolts 13. This not only ensures the stability of the connection between the fastener 801 and the positioning seat, but also allows for easy and quick disengagement of the fastener assembly 8 from the fastener 9 when the electromagnet 10 fails and cannot drive the fastener assembly 8 upward. This effectively solves the problem of the door being unable to open when the electromagnet 10 fails, thus improving the practical effect of this invention.

[0037] The limiting mechanism includes an electromagnet 10 fixedly installed in the groove. A corresponding positioning rod 12 is installed through the through hole in the middle of the electromagnet 10, which can move up and down. The lower end of the positioning rod 12 is fixed to the positioning seat 802. A spring 11 is sleeved on the outside of the positioning rod 12, with its end fixed to the electromagnet 10 and the positioning seat 802 respectively.

[0038] This invention utilizes an electromagnet 10 fixedly installed within a groove in the door handle 7. A positioning rod 12 is installed through a through hole in the middle of the electromagnet 10, allowing it to move up and down. The lower end of the positioning rod 12 is fixed to a positioning seat, and a spring 11, with its ends fixed to both the electromagnet 10 and the positioning seat, is sleeved on the outer side of the positioning rod 12. The positioning rod 12 limits the movement, and the spring 11 supports and fixes the fastening assembly 8, ensuring its stability. The electromagnet 10 is energized to drive the fastening assembly 8 upward, and the spring 11 is compressed and elastically reset to drive the fastening assembly 8 downward, thus determining whether the locking mechanism is engaged or disengaged. This facilitates the opening and closing of the door and ensures the safety of the dual-axis machine tool.

[0039] The first spindle 3 and the second spindle 4 are respectively mounted on both sides of the base 1 via corresponding slide rails and lead screw drives.

[0040] The two sets of worktables 5 are respectively installed side by side on the column through corresponding slide rails and lead screw transmission. The column is installed on the base 1 and fixed to the side wall of the housing 2.

[0041] Example 2

[0042] The difference between this embodiment and Embodiment 1 is that the dual-spindle machine tool further includes a set of vibration sensors respectively installed on the first spindle 3 and the second spindle 4, and all of the vibration sensors are electrically connected to the control circuit of the electromagnet 10.

[0043] This invention utilizes the characteristic that the spindle generates vibration during workpiece cutting. By installing corresponding vibration sensors on the spindle to determine whether the spindle is processing or not, the signal is transmitted to the control circuit. In the case of vibration, the electromagnet 10 is de-energized to ensure the door is closed. In the case of no vibration, the electromagnet 10 is energized to unlock the door and facilitate its opening. This effectively prevents accidental opening when the spindle has not completely stopped, which could lead to injury from flying chips and ensure personnel safety.

[0044] It should be noted that this embodiment is implemented in the same way as embodiment one in terms of principle and technical effect. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in embodiment one.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A twin-spindle machine tool, comprising: The base (1) and the housing (2) covering the base (1) are provided. A first spindle (3) and a second spindle (4) are mounted on both sides of the base (1) and can be moved left and right. Two sets of worktables (5) are mounted between the first spindle (3) and the second spindle (4) by corresponding columns and can be raised and lowered. Side cutters for machining workpieces on the corresponding spindles are mounted on the worktables (5). The front of the housing (2) is provided with a door consisting of two side-push-opening door panels (6). A corresponding door handle (7) is provided on the outer side of the door panels (6). The dual-spindle machine tool also includes a locking mechanism for locking the two door panels (6). The locking mechanism includes a fastening assembly (8) and a fastening element (9) respectively installed on the corresponding door handles (7). The fastening assembly (8) includes a fastening element (801) and a positioning seat (802) that are detachably and fixedly connected. When the two door panels (6) are pulled closed, the two door panels (6) are locked by the fastening element (801) and the fastening element (9) engaging with each other. The limiting mechanism is driven by a combination of an electromagnet (10) for adsorption and a spring (11) for elastic reset to move the fastening assembly (8) up and down and install it on the corresponding door handle (7); when the electromagnet (10) is energized and the fastening assembly (8) moves up to the position, the fastening assembly (8) is disengaged from the fastening member (9).

2. The twin-spindle machine tool according to claim 1, characterized in that, The door handle (7) on which the fastening assembly (8) is installed has a corresponding groove on its side. The inner side of the positioning seat (802) is embedded in the groove, and its outer side extends outward and is fixedly installed by locking the fastening member (801) with a locking bolt (13).

3. A twin-spindle machine tool according to claim 2, characterized in that, The cross-section of the fastener (9) is n-shaped, and the bottom of both ends of the fastener is integrally formed and folded inward to form corresponding limiting plates (901); the fastener (801) includes an installation part fixedly connected to the positioning seat (802) and two fastener joints spaced apart, and the ends of the fastener joints are integrally formed and protruded outward with corresponding wedges (14); when the door is closed, the fastener joints are inserted into the fastener (9) and its wedges (14) are engaged inside the limiting plate (901).

4. A dual-spindle machine tool according to claim 2, characterized in that, The limiting mechanism includes an electromagnet (10) fixedly installed in the groove. A corresponding positioning rod (12) is installed through the through hole in the middle of the electromagnet (10) and can move up and down. The lower end of the positioning rod (12) is fixed to the positioning seat (802). A spring (11) is sleeved on the outside of the positioning rod (12) with its end fixed to the electromagnet (10) and the positioning seat (802) respectively.

5. A twin-spindle machine tool according to claim 4, characterized in that, The dual-spindle machine tool also includes a set of vibration sensors respectively installed on the first spindle (3) and the second spindle (4), and the set of vibration sensors are all electrically connected to the control circuit of the electromagnet (10).

6. A twin-spindle machine tool according to claim 1, characterized in that, The first spindle (3) and the second spindle (4) are respectively mounted on both sides of the base (1) through corresponding slide rails and lead screw drives.

7. A twin-spindle machine tool according to claim 1, characterized in that, The two sets of worktables (5) are installed side by side on the column through corresponding slide rails and lead screws. The column is installed on the base (1) and fixed on the side wall of the housing (2).

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