Battery tray machining machine tool and chipless milling method thereof

Abstract

The invention relates to a battery tray machining machine tool and a chipless milling method thereof.The battery tray machining machine tool comprises a machine tool body and milling cutter devices arranged on the two sides of a milling station, each milling cutter device is provided with a vacuum pipe used for sucking and removing milling chippings, and each milling cutter device comprises a milling machining pipe, a tool bit installed on the machine tool body and a vacuum pipe used for sucking and removing the milling chippings; the cutter head is arranged in the milling processing pipe in a telescopic manner, and the cutter feeding assembly is mounted in the milling processing pipe or on the milling processing pipe, so that the cutter head and the milling processing pipe move relatively in the axial direction. The dust suction pipe is arranged at the position of the milling cutter, and milling chips generated by milling are sucked away by the dust suction pipe in time; the flexible ring can be tightly attached to the circumference of the to-be-milled position of the workpiece, milling chips are prevented from falling off, and the cleanliness of the milling environment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of metal part milling, in particular to a battery tray machining machine tool and a chipless milling method thereof. Background Art

[0002] Milling, as a common hole processing method, is widely used in various machine tools, including manual milling, machining centers, etc.

[0003] During the milling process, metal chips are bound to be generated. At present, whether it is a manually operated milling machine or a machining center, most equipment does not carry out special processing for the milling chips. Generally, the milling chips are accumulated and collected uniformly. Even if there is a space designed to temporarily store the milling chips, it is mostly located below the processing position, and the milling chips are collected by falling under their own weight. This operation method, especially in the case of a milling cutter with the cutter head facing upward, is easy to cause the chips to adhere to the milling cutter when they fall, affecting the normal processing of the milling cutter. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a battery tray machining machine tool with a rational structure and a chip-free milling method thereof. During the milling process, the milling chips can be quickly absorbed and discharged in time, thereby reducing the impact of the milling chips on the cutter head.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A battery tray machining machine tool comprises a machine tool body and milling cutter devices arranged on both sides of a milling station, each set of milling cutter devices is equipped with a vacuum tube for sucking away milling chips.

[0007] The milling cutter device comprises:

[0008] Milling tube, installed on the machine body,

[0009] The cutter head can be retracted in the milling tube.

[0010] The feed assembly is installed in or on the milling tube to enable the cutter head and the milling tube to move relative to each other in the axial direction.

[0011] As a further improvement of the above technical solution:

[0012] One end of the vacuum tube is connected to a vacuum system, and the other end is communicated with a milling processing tube.

[0013] The feed component adopts an active feed component or a driven feed component.

[0014] The active feed assembly comprises:

[0015] The feed motor is installed on the machine tool body.

[0016] The threaded shaft is connected to the output shaft of the feed motor.

[0017] The threaded sleeve is sleeved with the threaded shaft and is pushed by the threaded shaft, and the cutter head is connected to the bottom of the threaded sleeve.

[0018] A ball is formed on the threaded sleeve, a sliding groove is formed on the inner wall of the milled tube, and a circumferential rotating groove connected with the sliding groove is provided near the mouth of the inner wall of the milled tube, and the ball moves in the sliding groove and the rotating groove.

[0019] The mouth of the threaded sleeve and the bottom of the threaded shaft are respectively provided with locking flanges, and the opposite surfaces of the two locking flanges are serrated surfaces for one-way locking.

[0020] The driven feed assembly comprises a movable tube coaxially sleeved on the milling tube, and the movable tube is elastically connected to the milling tube.

[0021] A method for chipless milling using a battery tray machining machine tool. During the milling process, a milling tube is closed and attached to the surface of a workpiece to be machined to form a closed milling space, and the milling chips generated by the milling are promptly sucked away by a vacuum tube.

[0022] As a further improvement of the above technical solution:

[0023] During the milling process, when the cutter head uses the active feed assembly to achieve retraction, the activity process is as follows:

[0024] The feed motor drives the threaded shaft to rotate, pushing the threaded sleeve to drive the cutter head to extend out of the milling processing tube; when the threaded sleeve moves to the limit position, the ball falls from the sliding groove to the rotating groove, and the locking flanges on the threaded sleeve and the threaded shaft are locked and connected with each other. At this time, the cutter head is driven to rotate and mill.

[0025] When resetting is required, the feed motor is reversed to release the locking force of the locking flange, the ball is driven to move up into the sliding groove, and the threaded sleeve moves up and retracts into the milling tube.

[0026] During the milling process, when the cutter head uses the driven feed assembly to achieve extension and retraction, the activity process is as follows:

[0027] Press the milling tube onto the workpiece until the cutter head contacts the surface of the workpiece, and the spring is in a compressed state;

[0028] During the continuous milling process, the movable tube is always pressed on the workpiece to be processed, and the spring gradually increases the degree of deformation; after the processing is completed and the tool is retracted, the spring returns to its original position, and the movable tube returns to its original position and is wrapped around the outside of the tool head.

[0029] The beneficial effects of the present invention are as follows:

[0030] Compared with conventional milling lathes, the present invention is particularly suitable for workpieces that require flat drilling, such as battery trays. Since the workpiece requires a small z-direction stroke, the present invention abandons the gantry frame, reduces the longitudinal height and economic cost of the overall equipment, makes the height of the entire equipment lower, the resonance during operation is smaller, and the milling cutter is more stable.

[0031] In the present invention, a dust suction pipe is arranged at the milling cutter, which wraps the milling cutter during the milling process, and the milling chips generated by the milling are sucked away in time by the dust suction pipe; and the mouth of the dust suction pipe is a flexible ring, which can fit tightly on the circumference of the position to be milled of the workpiece, preventing the milling chips from falling and preventing external impurities from contaminating the milling hole, thereby further ensuring the cleanliness of the milling environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a schematic structural diagram of the present invention with a milling cutter device on one side.

[0034] Figure 3 It is a schematic diagram of the structure of a group of milling cutter devices of the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of a forward milling cutter and a reverse milling cutter in one embodiment.

[0036] Figure 5 The figure is a schematic structural diagram of a group of milling cutter devices for milling a tube according to the present invention.

[0037] Figure 6 for Figure 5 Cross-sectional view of the active feed structure.

[0038] Figure 7 for Figure 6 Schematic diagram of the mid-slip connection structure.

[0039] Figure 8 It is a side view of the serrated surface structure of two locking flanges.

[0040] Fig. 9 for Figure 5 Schematic diagram of the cross-sectional view of the driven feed structure.

[0041] Among them: 1. Machine tool body; 2. Vacuum system; 3. Milling cutter device; 4. Active feed assembly; 5. Driven feed assembly;

[0042] 301, three-way slide rail; 302, milling tube; 303, cutter head; 304, vacuum tube; 305, flexible ring;

[0043] 401, feed motor; 402, threaded shaft; 403, threaded sleeve; 404, locking flange; 405, sliding groove; 406, rotating groove; 407, ball bearing;

[0044] 501. movable tube; 502. elastic member. DETAILED DESCRIPTION

[0045] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0046] like Figure 1-Figure 9 As shown, the battery tray machining machine tool of this embodiment includes a machine tool body 1, including milling cutter devices 3 arranged on both sides of the milling station, each set of milling cutter devices 3 is equipped with a vacuum tube 304 for sucking away milling chips,

[0047] The milling cutter device 3 comprises:

[0048] The milling tube 302 is mounted on the machine tool body 1.

[0049] The cutter head 303 is retractably arranged in the milling tube 302.

[0050] The feed assembly is installed in or on the milling tube 302 to enable the cutter head 303 and the milling tube 302 to move relative to each other in the axial direction.

[0051] One end of the vacuum tube 304 is connected to the vacuum system 2 , and the other end is connected to the milling tube 302 .

[0052] The feed assembly adopts an active feed assembly 4 or a driven feed assembly 5 .

[0053] The active feed assembly 4 comprises:

[0054] The feed motor 401 is installed on the machine tool body 1.

[0055] The threaded shaft 402 is connected to the output shaft of the feed motor 401.

[0056] The threaded sleeve 403 is sleeved with the threaded shaft 402 and is pushed by the threaded shaft 402 . The cutter head 303 is connected to the bottom of the threaded sleeve 403 .

[0057] A ball 407 is formed on the threaded sleeve 403 , a sliding groove 405 is formed on the inner wall of the milled tube 302 , and a circumferential rotating groove 406 connected to the sliding groove 405 is provided near the mouth of the inner wall of the milled tube 302 . The ball 407 moves in the sliding groove 405 and the rotating groove 406 .

[0058] The mouth of the threaded sleeve 403 and the bottom of the threaded shaft 402 are respectively provided with locking flanges 404 , and the opposite surfaces of the two locking flanges 404 are serrated surfaces for one-way locking.

[0059] The driven feed assembly 5 comprises a movable tube 501 coaxially sleeved on the milling tube 302 , and the movable tube 501 is elastically connected to the milling tube 302 .

[0060] In the method of chipless milling using a battery tray machining machine tool in this embodiment, during the milling process, the milling tube 302 is closed and attached to the surface of the workpiece to be machined to form a closed milling space, and the milling chips generated by the milling are promptly sucked away by the vacuum tube 304.

[0061] During the milling process, when the cutter head 303 uses the active feed assembly 4 to achieve telescoping, the activity process is as follows:

[0062] The feed motor 401 drives the threaded shaft 402 to rotate, pushing the threaded sleeve 403 to drive the cutter head 303 to extend out of the milling processing tube 302; when the threaded sleeve 403 moves to the limit position, the ball 407 falls from the sliding groove 405 to the rotating groove 406, and the locking flange 404 on the threaded sleeve 403 and the threaded shaft 402 are locked and connected with each other. At this time, the cutter head 303 is driven to rotate and mill.

[0063] When resetting is required, the feed motor 401 is reversed to release the locking force of the locking flange 404 , the ball 407 is driven to move upward into the sliding groove 405 , and the threaded sleeve 403 moves upward and retracts into the milling tube 302 .

[0064] During the milling process, when the cutter head 303 uses the driven feed assembly 5 to achieve telescopic movement, the movement process is as follows:

[0065] Press the milling tube 302 onto the workpiece to be processed until the cutter head 303 contacts the surface of the workpiece to be processed, and the spring is in a compressed state;

[0066] During the continuous milling process, the movable tube 501 is always pressed on the workpiece to be processed, and the spring gradually increases the degree of deformation; after the processing is completed and the tool is retracted, the spring returns to its original position, and the movable tube 501 returns to its original position and is wrapped around the outside of the tool head 303.

[0067] like Figure 1 As shown, it is a schematic diagram of the whole machine. On the basis of the existing feed track and milling station of the conventional machine tool, the present invention adds two sets of three-way slide rails 301 on both sides of the milling station, and a milling cutter device 3 is slidably connected to each set of three-way slide rails 301. With the feed direction as the x direction, the three-way slide rail 301 can reciprocate in the x direction, the y direction, and the z direction. The three-way slide rail 301 can adopt the existing technology, which will not be described in detail in this embodiment.

[0068] In order to efficiently mill the workpiece, as an optional implementation, refer to Figure 4Two sets of three-way tracks in the same vertical plane can be set on each side of the milling station, and each set of three-way tracks in the same vertical plane is provided with a set of independently operated milling cutter devices 3. For the sake of distinction, the milling cutter device 3 that feeds from top to bottom can be called a positive milling cutter, and the milling cutter device 3 that feeds from bottom to top can be called a reverse milling cutter. Both the positive milling cutter and the reverse milling cutter can be equipped with a milling processing tube 302 and a vacuum tube 304 to achieve chipless milling.

[0069] Take one set of milling cutter devices 3 as an example for explanation. Figure 2 As shown, the vacuum tube 304 led out from the vacuum system 2 is connected to the milling cutter device 3 to suck away the milling chips in the milling process in time.

[0070] Combined with reference Figure 3 , Figure 5 The milling cutter device 3 is installed on the three-way slide rail 301. The power source of the milling cutter device 3 is the feed motor 401. The end face where the output shaft of the feed motor 401 is located is connected to the milling processing tube 302, and the side wall of the milling processing tube 302 is connected to the vacuum tube 304.

[0071] A flexible ring 305 is provided at the mouth of the milling processing tube 302, which can be made of nylon, rubber, silicone and other materials. During the processing, the flexible ring 305 contacts the surface of the workpiece to be processed, forming a temporary closed milling environment in the milling processing tube 302. When the cutter head 303 is milling a hole, the milling chips generated are sucked away by the vacuum tube 304 in the first time.

[0072] The present invention proposes two optional active feed structures and driven feed structures to achieve the purpose of keeping the flexible ring 305 close to the workpiece and the milling cutter continuously milling during the milling process.

[0073] like Figure 6-Figure 8 The figure shows a cross-sectional view of the active feed assembly 4 of the present invention. During the feed process of the active feed assembly 4, the feed motor 401 drives the threaded shaft 402 to rotate, and the threaded sleeve 403 is slidably connected to the inner wall of the milling tube 302, converting the rotation of the threaded shaft 402 into up and down movement. After the threaded sleeve 403 extends out of the inner wall of the milling tube 302 and moves to the extreme position, the threaded sleeve 403 and the threaded shaft 402 are no longer threadedly connected, but are locked by the locking flange 404, and the threaded sleeve 403 can be driven to continue rotating, that is, the cutter head 303 can be driven to rotate at high speed to achieve milling.

[0074] In order to meet the movement of the threaded sleeve 403, an axially arranged sliding groove 405 is formed on the inner wall of the milling tube 302, and a rotating groove 406 is formed on the inner wall of the milling tube 302 near the mouth. The rotating groove 406 is connected to the sliding groove 405. A sliding block is formed on the threaded sleeve 403. In order to reduce movement friction, in this embodiment, the sliding block is set to be a ball 407 embedded in the outer wall of the threaded sleeve 403.

[0075] The feed motor 401 is reversed, and the rotation of the feed motor 401 is pre-set to be counted in full circles. Therefore, after milling is completed, the positioning ball 407 on the threaded sleeve 403 still corresponds to the bottom of the sliding groove 405 on the inner wall of the milling processing tube 302, and the reverse rotation drives the threaded sleeve 403 to retract along the sliding groove 405.

[0076] The opposite surface of the locking flange 404 is a serrated surface to provide sufficient limiting force.

[0077] like Fig. 9 As shown, it is a cross-sectional view of the driven feed assembly 5 used in the present invention. In the driven feed condition, the feed motor 401 directly drives the cutter head 303, and the position of the cutter head 303 remains constant. A coaxial movable tube 501 is sleeved on the inner wall or outer wall of the milling processing tube 302, and a step is formed at the circumferential position of the movable tube 501. A spring is connected to the step, and the other end of the spring is embedded in the wall thickness of the milling processing tube 302 to improve the axial movement accuracy of the spring during deformation. In the initial state, the spring is in a state of no force, and the cutter head 303 is hidden in the movable tube 501. When processing is required, the milling processing tube 302 with the movable tube 501 is pressed onto the workpiece to be processed until the cutter head 303 contacts the surface of the workpiece to be processed. At this time, the spring is in a compressed state; during the continuous milling process, the movable tube 501 is always pressed on the workpiece to be processed, and the spring gradually increases the degree of deformation. After the processing is completed and the cutter is retracted, the spring is reset, and the movable tube 501 is reset and covered outside the cutter head 303.

[0078] In this working condition, the flexible ring 305 is installed at the mouth of the movable tube 501.

[0079] The main advantage of the present invention is that the milling chips can be removed in time, thus ensuring the cleanliness of the milling environment.

[0080] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

[0081] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A battery tray machining machine tool, comprising a machine tool body (1), characterized in that: It comprises milling cutter devices (3) arranged on both sides of the milling station, each set of milling cutter devices (3) is equipped with a vacuum tube (304) for sucking away milling chips. The milling cutter device (3) comprises: The milling tube (302) is mounted on the machine tool body (1). The cutter head (303) is telescopically arranged in the milling tube (302). The feed assembly is installed in or on the milling tube (302) to enable the cutter head (303) and the milling tube (302) to move relative to each other in the axial direction.

2. The battery tray machining machine tool according to claim 1, characterized in that: One end of the vacuum tube (304) is connected to the vacuum system (2), and the other end is connected to the milling tube (302).

3. The battery tray machining machine tool according to claim 1, characterized in that: The feed assembly adopts an active feed assembly (4) or a driven feed assembly (5).

4. The battery tray machining machine tool according to claim 3, characterized in that: The active feed assembly (4) comprises: The feed motor (401) is mounted on the machine tool body (1). The threaded shaft (402) is connected to the output shaft of the feed motor (401). The threaded sleeve (403) is sleeved with the threaded shaft (402) and is pushed by the threaded shaft (402). The cutter head (303) is connected to the bottom of the threaded sleeve (403).

5. The battery tray machining machine tool according to claim 4, characterized in that: A ball (407) is formed on the threaded sleeve (403), a sliding groove (405) is formed on the inner wall of the milling tube (302), and a circumferential rotating groove (406) connected to the sliding groove (405) is provided near the mouth of the inner wall of the milling tube (302), and the ball (407) moves in the sliding groove (405) and the rotating groove (406).

6. The battery tray machining machine tool according to claim 5, characterized in that: The mouth of the threaded sleeve (403) and the bottom of the threaded shaft (402) are respectively provided with locking flanges (404), and the opposite surfaces of the two locking flanges (404) are serrated surfaces for one-way locking.

7. The battery tray machining machine tool according to claim 3, characterized in that: The driven feed assembly (5) comprises a movable tube (501) coaxially sleeved on the milling tube (302), and the movable tube (501) and the milling tube (302) are elastically connected.

8. A method for chipless milling using the battery tray machining machine tool according to claim 1, characterized in that: The method comprises the following steps: during the milling process, the milling processing tube (302) is closed and attached to the surface of the workpiece to be processed to form a closed milling space, and the milling chips generated by the milling are sucked away in time by the vacuum tube (304).

9. The method for chipless milling according to claim 8, characterized in that: During the milling process, when the cutter head (303) uses the active feed assembly (4) to achieve telescopic movement, the movement process is as follows: The feed motor (401) drives the threaded shaft (402) to rotate, pushing the threaded sleeve (403) to drive the cutter head (303) to extend out of the milling processing tube (302); when the threaded sleeve (403) moves to the extreme position, the ball (407) falls from the sliding groove (405) into the rotating groove (406), and the locking flange (404) on the threaded sleeve (403) and the threaded shaft (402) are locked and connected to each other. At this time, the cutter head (303) is driven to rotate and mill, When resetting is required, the feed motor (401) is reversed to release the locking force of the locking flange (404), the ball (407) is driven to move upward into the sliding groove (405), and the threaded sleeve (403) moves upward and retracts into the milling tube (302).

10. The method for chipless milling according to claim 8, characterized in that: During the milling process, when the cutter head (303) uses the driven feed assembly (5) to achieve telescopic movement, the movement process is as follows: Pressing the milling tube (302) onto the workpiece to be processed until the cutter head (303) contacts the surface of the workpiece to be processed, and the spring is in a compressed state; During the continuous milling process, the movable tube (501) is always pressed on the workpiece to be processed, and the spring gradually increases the degree of deformation; after the processing is completed and the tool is retracted, the spring is reset, and the movable tube (501) is reset and wrapped outside the tool head (303).

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