Self-adaptive water spraying cooling device for drill bit of machine tool

Abstract

The utility model discloses a machine tool drill bit self-adaption water spraying cooling device which comprises a machine tool body, a three-jaw chuck and a top frame, the top frame is transversely fixed to the top side of the machine tool body, the three-jaw chuck is arranged on the inner side of the machine tool body, a cooling plate is arranged on the inner side of the top frame, and the three-jaw chuck is arranged on the inner side of the cooling plate. A sliding rod for supporting the cooling plate to slide transversely is transversely fixed between the top frame and the machine tool body, a spray head is fixed to the side, close to the three-jaw chuck, of the bottom of the cooling plate, and a guide pipe communicated with the spray head is fixed to the top side of the cooling plate. The cooling device has the advantages that the cooling plate which synchronously feeds and retreats along with the tool rest is arranged, and the limiting plate is installed to serve as a feeding limiting structure of the cooling plate, so that it is guaranteed that a spray head can continuously inject water into an outer opening part of a drilled hole in a workpiece for cooling; the problem that the cooling water supply position deviates after drilling due to integrated movement of a traditional cooling pipe and the tool rest is solved, the cooling effect is better, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of machine tool drilling cooling equipment, in particular to a machine tool drill bit adaptive water spray cooling device. Background Art

[0002] When using a machine tool to drill a workpiece, in order to avoid a reduction in accuracy after the metal material is heated and expanded, and to avoid a deterioration in the hardness of the drill bit due to heat, it is necessary to spray water to cool the drilling position during the drilling process. For the convenience of positioning, most of the current water spray pipes are fixed on the outside of the tool holder to ensure that the water spray pipe can move synchronously with the tool holder, that is, to ensure that the water spray position of the water spray pipe can be consistent with the position of the drill tool, so as to meet the needs of the water spray pipe for rapid positioning of the workpiece during the drilling process. In this type of water spray pipe fixing method in which the water spray pipe moves synchronously with the tool holder, during the drilling process, the drill bit continues to drill into the workpiece, and the drill bit and the external water spray pipe are fed synchronously, causing the water spray area and the external port of the borehole to be staggered. After the drill bit drills in, the water spray pipe cannot continue to keep water injection and cooling at the outer port of the borehole, resulting in a waste of cooling water and a poor cooling effect. Utility Model Content

[0003] The purpose of the utility model is to provide an adaptive water spray cooling device for a machine tool drill bit in order to solve the above-mentioned problem. By setting a cooling plate that feeds and retracts synchronously with the tool holder, and installing a limit plate as a feed limit structure of the cooling plate, it is ensured that the nozzle can continuously inject water to cool the outer opening of the hole in the workpiece, thereby solving the deviation of the cooling water supply position after drilling caused by the integrated movement of the traditional cooling pipe and the tool holder. The cooling effect is better and the use is more convenient. Please see the following explanation for details.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides an adaptive water spray cooling device for a machine tool drill bit, comprising a machine tool body, a three-jaw chuck and a top frame, wherein the top frame is transversely fixed to the top side of the machine tool body, the inside of the machine tool body is provided with a three-jaw chuck, the inside of the top frame is provided with a cooling plate, and a sliding rod supporting the transverse sliding of the cooling plate is transversely fixed between the top frame and the machine tool body;

[0006] A nozzle is fixed to the bottom of the cooling plate near the three-jaw chuck, and a conduit connected to the nozzle is fixed to the top side of the cooling plate. A hanging ear that slides laterally to cooperate with the sliding rod is fixed to the top side of the cooling plate, and a sliding block extending downward to block the cooling plate is provided in the middle of the top frame.

[0007] The above-mentioned adaptive water spray cooling device for machine tool drill bits is adopted. When in use, the workpiece is clamped and installed on the inner side of the machine tool body through the three-jaw chuck, and the screw is driven to rotate by the positioning motor, and the slider is driven to move horizontally along the slide groove by the screw until the limit block is away from the three-jaw chuck and is flush with the end face of the workpiece. At this time, the workpiece is supported to rotate by the machine tool body in cooperation with the three-jaw chuck, and the machine tool body is used to support the transmission seat to drive the tool holder and the drill bit to approach the end face of the workpiece. When the drill bit contacts the opening on the end face of the workpiece, the cooling plate contacts the limit plate, and the cooling plate is blocked by the limit plate. At this time, the cooling plate cannot continue to move to one side of the workpiece, and the tool holder supports the drill bit to continuously extend into the middle of the rotating workpiece to realize drilling. During the drilling process, ensure that the nozzle on the bottom side of the cooling plate continuously sprays water to the orifice on the end face of the workpiece, so as to ensure that the cooling water can extend into the drilled channel along the spiral groove of the drill bit, so as to realize continuous cooling of the drill bit.

[0008] Preferably, a slide groove extending laterally is vertically penetrated through the middle of the top frame, a positioning motor is fixed to the side of the top frame away from the three-jaw chuck, and the output end of the positioning motor is transmission-connected to a screw extending into the slide groove.

[0009] Preferably, the sliding block extends into the sliding groove and slides with the sliding groove in a transverse manner, and the screw rod passes through the sliding block in a transverse manner and threads with the sliding block.

[0010] Preferably, an upper clamping plate is provided below the cooling plate, and a pressure rod of a U-shaped bent rod structure with an opening facing downward is fixed to the top side of the upper clamping plate, and both ends of the pressure rod vertically penetrate the cooling plate and are gap-matched with the cooling plate.

[0011] Preferably, a transmission seat is provided in the middle of the machine tool body, a tool holder is fixed on the top side of the transmission seat, a drill is provided on the outside of the tool holder corresponding to the three-jaw chuck, and the tool holder includes a fixing plate fixed to the top side of the transmission seat.

[0012] Preferably, a movable plate is arranged above the fixed plate, and a constraint block is fixed at one end of the drill bit extending between the fixed plate and the movable plate. The four corners of the fixed plate and the movable plate are vertically threadedly connected with clamping bolts, and the clamping bolts keep the movable plate pressed against the top side of the constraint block.

[0013] Preferably, a lower clamping plate is fixed on the top side of the movable plate, the top side of the lower clamping plate is a helical tooth structure, and the outer tip of the helical tooth structure is inclined away from the three-jaw chuck.

[0014] Preferably, the bottom side of the upper card plate is a rack structure adapted to engage with the oblique teeth on the top side of the lower card plate, and both ends of the pressure rod are provided with springs that keep the upper card plate pressed against the lower card plate, and the compression stroke of the spring is greater than the thickness of the rack of the upper card plate.

[0015] The beneficial effect is that: the utility model sets a cooling plate that feeds and retracts synchronously with the tool holder, and installs a limit plate as a feed limit structure of the cooling plate. When the tool holder supports the drill bit to drill a hole in the workpiece, the limit plate is used to block the cooling plate from following the tool holder to continuously move toward the workpiece, so as to ensure that the nozzle can continuously inject water to cool the outer opening of the hole on the workpiece, thereby solving the problem of the deviation of the cooling water supply position after drilling caused by the integrated movement of the traditional cooling pipe and the tool holder, and achieving a better cooling effect.

[0016] In addition, after drilling is completed, the cooling plate can be supported by the tool holder to slide away from the three-jaw chuck, thereby realizing the synchronous retraction action of the tool holder and the water spray pipe, and facilitating the adjustment of the relative position of the cooling plate and the tool holder for subsequent drilling cooling actions, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is the main structural diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the structural disassembly of the utility model;

[0021] Figure 4 It is a partial main structural diagram of the utility model.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Machine tool body; 2. Three-jaw chuck; 3. Top frame; 301. Slide; 302. Screw; 303. Positioning motor; 4. Slide bar; 5. Slider; 501. Limit plate; 6. Cooling plate; 601. Nozzle; 602. Conduit; 603. Hanging ear; 604. Pressure rod; 605. Upper clamping plate; 606. Spring; 7. Transmission seat; 8. Tool holder; 801. Fixed plate; 802. Movable plate; 803. Clamping bolt; 804. Lower clamping plate; 9. Workpiece; 10. Drill bit; 10a. Constraint block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0025] See also Figure 1-Figure 3 As shown, the utility model provides an adaptive water spray cooling device for a machine tool drill bit, comprising a machine tool body 1, a three-jaw chuck 2 and a top frame 3, the top frame 3 is transversely fixed to the top side of the machine tool body 1, the three-jaw chuck 2 is arranged inside the machine tool body 1, the machine tool body 1 and the three-jaw chuck 2 are both existing technologies in the field, and are not described in detail here, a cooling plate 6 for installing a cooling pipeline is arranged inside the top frame 3, and a slide bar 4 for supporting the transverse sliding of the cooling plate 6 is transversely fixed between the top frame 3 and the machine tool body 1;

[0026] A nozzle 601 is fixed on the bottom of the cooling plate 6 near the three-jaw chuck 2, and the nozzle 601 sprays cooling water downward to cool the drilling position, and a conduit 602 connected to the nozzle 601 is fixed on the top side of the cooling plate 6, and the conduit 602 is connected to the external water supply pipeline, and a hanging ear 603 that slides horizontally with the slide rod 4 is fixed on the top side of the cooling plate 6, and a slider 5 extending downward to block the lateral position of the cooling plate 6 is provided in the middle of the top frame 3.

[0027] As an optional embodiment, a laterally extending slide groove 301 is vertically penetrated in the middle of the top frame 3, a positioning motor 303 is fixed to the side of the top frame 3 away from the three-jaw chuck 2, and the output end of the positioning motor 303 is transmission-connected with a screw rod 302 extending into the slide groove 301, the slider 5 extends into the slide groove 301 and slides with the slide groove 301 laterally, the screw rod 302 penetrates the slider 5 laterally and is threadedly engaged with the slider 5, so that the position can be adjusted by rotating the screw rod 302 and driving the slider 5 to move laterally, an upper clamping plate 605 is arranged below the cooling plate 6, and a pressure rod 604 of a U-shaped bent rod structure with an opening facing downward is fixed to the top side of the upper clamping plate 605, and both ends of the pressure rod 604 vertically penetrate the cooling plate 6 and are gap-matched with the cooling plate 6;

[0028] A transmission seat 7 is provided in the middle of the machine tool body 1, a tool holder 8 is fixed on the top side of the transmission seat 7, a drill bit 10 is provided on the outside of the tool holder 8 corresponding to the three-jaw chuck 2, the tool holder 8 includes a fixed plate 801 fixed on the top side of the transmission seat 7, a movable plate 802 is provided above the fixed plate 801, the drill bit 10 extends between the fixed plate 801 and the movable plate 802, one end of which is fixed with a constraint block 10a, the four corners of the fixed plate 801 and the movable plate 802 are vertically threadedly connected with clamping bolts 803, the clamping bolts 803 keep the movable plate 802 pressed against the top side of the constraint block 10a, and realize the fixing action of the drill bit 10 in the tool holder 8;

[0029] A lower clamping plate 804 is fixed on the top side of the movable plate 802. The top side of the lower clamping plate 804 is a helical tooth structure, and the outer tip of the helical tooth structure is inclined toward the side away from the three-jaw chuck 2. The bottom side of the upper clamping plate 605 is a rack structure adapted to engage with the helical teeth on the top side of the lower clamping plate 804. Both ends of the pressure rod 604 are provided with springs 606 for keeping the upper clamping plate 605 pressed against the lower clamping plate 804, and the compression stroke of the spring 606 is greater than the rack thickness of the upper clamping plate 605, ensuring that the pressure rod 604 can be pulled upward to separate the upper clamping plate 605 and the lower clamping plate 804 by compressing the spring 606, thereby facilitating manual adjustment of the lateral relative position of the cooling plate 6 above the tool holder 8.

[0030] With the above structure, when in use, the workpiece 9 is clamped and installed on the inner side of the machine tool body 1 through the three-jaw chuck 2, and the screw 302 is driven to rotate by the positioning motor 303, and the slider 5 is driven to move horizontally along the slide groove 301 by the screw 302 until the limit block is away from the side of the three-jaw chuck 2 and is flush with the end face of the workpiece 9. At this time, the machine tool body 1 cooperates with the three-jaw chuck 2 to support the workpiece 9 to rotate, and the machine tool body 1 supports the transmission seat 7 to drive the tool holder 8 and the drill bit 10 to approach the end face of the workpiece 9. When the cooling plate 6 touches the opening on the end face of the workpiece 9, the cooling plate 6 contacts the limit plate 501, and the cooling plate 6 is blocked by the limit plate 501. At this time, the cooling plate 6 cannot continue to move toward the side of the workpiece 9, and the tool holder 8 supports the drill bit 10 to continuously extend into the middle of the rotating workpiece 9 to achieve drilling. During the drilling process, ensure that the nozzle 601 on the bottom side of the cooling plate 6 continuously sprays water toward the hole on the end face of the workpiece 9, so as to ensure that the cooling water can extend into the drilled channel along the spiral groove of the drill bit 10, so as to achieve continuous cooling of the drill bit 10;

[0031] By setting a cooling plate 6 that feeds and retracts synchronously with the tool holder 8, and installing a limit plate 501 as a feed limit structure of the cooling plate 6, when the tool holder 8 supports the drill bit 10 to drill a hole in the workpiece 9, the limit plate 501 is used to block the cooling plate 6 from following the tool holder 8 to continuously move toward the workpiece 9, so as to ensure that the nozzle 601 can adapt to the drilling position of the workpiece, and use the nozzle 601 to continuously inject water to the outer opening of the hole on the workpiece 9 for cooling, so as to solve the deviation of the cooling water supply position after drilling caused by the integrated movement of the traditional cooling pipe and the tool holder 8, and achieve a better cooling effect;

[0032] In addition, after the drilling is completed, the cooling plate 6 can be supported by the tool holder 8 to slide away from the three-jaw chuck 2, thereby realizing the synchronous retraction action of the tool holder 8 and the water spray pipe, and facilitating the adjustment of the relative position of the cooling plate 6 and the tool holder 8 for subsequent drilling cooling actions, which is more convenient to use.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An adaptive water spray cooling device for a machine tool drill bit, comprising a machine tool body (1), a three-jaw chuck (2) and a top frame (3), wherein the top frame (3) is transversely fixed to the top side of the machine tool body (1), and the three-jaw chuck (2) is arranged inside the machine tool body (1), characterized in that: A cooling plate (6) is arranged on the inner side of the top frame (3), and a sliding rod (4) for supporting the lateral sliding of the cooling plate (6) is transversely fixed between the top frame (3) and the machine tool body (1); A nozzle (601) is fixed to the bottom of the cooling plate (6) near one side of the three-jaw chuck (2), and a conduit (602) connected to the nozzle (601) is fixed to the top side of the cooling plate (6), a hanging ear (603) that slides laterally to cooperate with the slide rod (4) is fixed to the top side of the cooling plate (6), and a slider (5) that extends downward to block the cooling plate (6) is provided in the middle of the top frame (3).

2. According to claim 1, the adaptive water spray cooling device for a machine tool drill bit is characterized in that: A slide groove (301) extending laterally is vertically penetrated through the middle of the top frame (3); a positioning motor (303) is fixed to the side of the top frame (3) away from the three-jaw chuck (2); and a screw rod (302) extending into the slide groove (301) is transmission-connected to the output end of the positioning motor (303).

3. The adaptive water spray cooling device for a machine tool drill bit according to claim 2, characterized in that: The slider (5) extends into the slide groove (301) and slides with the slide groove (301) in a transverse sliding manner, and the screw rod (302) passes through the slider (5) in a transverse manner and threads with the slider (5).

4. The adaptive water spray cooling device for a machine tool drill bit according to claim 3, characterized in that: An upper clamping plate (605) is arranged below the cooling plate (6), and a pressure rod (604) of a U-shaped bent rod structure with an opening facing downward is fixed on the top side of the upper clamping plate (605), and both ends of the pressure rod (604) vertically penetrate the cooling plate (6) and are loosely matched with the cooling plate (6).

5. The adaptive water spray cooling device for a machine tool drill bit according to claim 4, characterized in that: A transmission seat (7) is arranged in the middle of the machine tool body (1), a tool holder (8) is fixed on the top side of the transmission seat (7), a drill bit (10) is arranged on the outside of the tool holder (8) corresponding to the three-jaw chuck (2), and the tool holder (8) includes a fixing plate (801) fixed to the top side of the transmission seat (7).

6. The adaptive water spray cooling device for a machine tool drill bit according to claim 5, characterized in that: A movable plate (802) is arranged above the fixed plate (801); the drill bit (10) extends between the fixed plate (801) and the movable plate (802), and a restraining block (10a) is fixed at one end thereof; the four corners of the fixed plate (801) and the movable plate (802) are vertically threadedly connected with clamping bolts (803); the clamping bolts (803) keep the movable plate (802) pressed against the top side of the restraining block (10a).

7. The adaptive water spray cooling device for a machine tool drill bit according to claim 6, characterized in that: A lower clamping plate (804) is fixed on the top side of the movable plate (802), and the top side of the lower clamping plate (804) is a helical tooth structure, and the outer tip of the helical tooth structure is inclined away from the three-jaw chuck (2).

8. The adaptive water spray cooling device for a machine tool drill bit according to claim 7, characterized in that: The bottom side of the upper card plate (605) is a rack structure adapted to engage with the oblique teeth on the top side of the lower card plate (804), and both ends of the pressure rod (604) are sleeved with springs (606) for keeping the upper card plate (605) pressed against the lower card plate (804), and the compression stroke of the spring (606) is greater than the thickness of the rack of the upper card plate (605).

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