Laser cutting machine for machining internal expansion type anchorage device for prestressed steel bar repair

Abstract

The utility model relates to the technical field of anchorage device machining, in particular to a laser cutting machine for machining an internal expansion type anchorage device for prestressed steel bar repair, which comprises a lathe bed, an X-axis sliding module is fixedly arranged on the lathe bed, a Z-axis sliding module is mounted at the moving end of the X-axis sliding module, and a laser cutting head is mounted at the moving end of the Z-axis sliding module; a clamping mechanism is fixedly arranged on the lathe bed, a rotary servo motor is arranged on the clamping mechanism, a moving mechanism is fixedly arranged on the lathe bed, a carbon rod is installed at the moving end of the moving mechanism, and the moving mechanism drives the carbon rod to move so that one end of the carbon rod can stretch into a workpiece clamped by the clamping mechanism. The laser cutting device has the beneficial effects that the carbon rod is driven by the moving mechanism to extend into the workpiece clamped by the clamping mechanism, and laser acts on the carbon rod after penetrating through the outer wall of the workpiece, so that the inner wall opposite to a cutting opening of the workpiece can be prevented from being damaged after the laser cuts and penetrates through the outer wall when the laser cutting head cuts the workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor processing, in particular to a laser cutting machine for processing prestressed steel bar repair internal expansion anchors. Background Art

[0002] Currently, there is a lack of equipment for processing internal expansion anchors for prestressed steel rod repairs. Because the required workpiece machining path is an oblique line and the workpiece's outer wall needs to be cut axially to form three equal slices, the cutting path must be from one end of the workpiece to the other. During the laser cutting process, after the laser penetrates the outer wall of the workpiece, it will act on the inner wall opposite the cut, causing damage to the workpiece's inner wall.

[0003] The clamping force of conventional radial clamping jaws can cause eccentricity and workpiece dropout after cutting. Therefore, conventional radial clamping fixtures cannot be used to clamp the workpiece. Two-end clamps must be used, and the fixture must be positioned away from the laser cutting path to prevent damage. Conventional laser tube cutting machines are unable to meet these cutting requirements. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a laser cutting machine for processing prestressed steel rod repair internal expansion anchors, which is used to solve the above-mentioned problems existing in the prior art.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: A laser cutting machine for processing internal expansion anchors for repairing prestressed steel rods, comprising a bed, an X-axis sliding module is fixedly provided on the bed, a Z-axis sliding module is installed on the moving end of the X-axis sliding module for driving the Z-axis sliding module to move back and forth in the X-axis direction, a laser cutting head is installed on the moving end of the Z-axis sliding module for driving the laser cutting head to move up and down in the Z-axis direction; a clamping mechanism for clamping a workpiece is fixedly provided on the bed, the clamping mechanism clamps the workpiece so that the length direction of the workpiece extends along the X-axis direction, the clamping mechanism is provided with a rotary servo motor for driving the workpiece to rotate, a moving mechanism is fixedly provided on the bed, a carbon rod is installed on the moving end of the moving mechanism, the moving mechanism drives the carbon rod to move so that one end of the carbon rod extends into the interior of the workpiece clamped by the clamping mechanism.

[0006] The beneficial effect of the utility model is that the utility model drives the carbon rod to extend into the workpiece clamped by the clamping mechanism through the moving mechanism. After the laser penetrates the outer wall of the workpiece, the laser acts on the carbon rod, which can prevent the laser cutting head from damaging the inner wall opposite to the cutting opening of the workpiece after the laser cutting penetrates the outer wall when cutting the workpiece.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, there are two clamping mechanisms, which are arranged at intervals. The movable mechanism is arranged between the two clamping mechanisms, and the carbon rod is extended along the X-axis direction. The movable mechanism drives the carbon rod to extend into the workpieces clamped by the two clamping mechanisms.

[0009] The beneficial effect of adopting the above further solution is: using two clamping mechanisms to achieve double-station operation. When one clamping mechanism clamps the workpiece for cutting, the other clamping mechanism can realize loading and unloading, thereby improving workpiece processing efficiency and reducing processing costs.

[0010] Furthermore, the clamping mechanism includes a fixed seat fixed on the bed and a movable seat fixedly mounted on the movable end of the linear drive mechanism, the linear drive mechanism is fixed on the bed, and is used to drive the movable seat to move along the X-axis direction so that the movable seat approaches or moves away from the fixed seat, and the movable seat is arranged on the side of the fixed seat close to the movable mechanism; a rotary servo motor is fixed on the fixed seat, a fixed end claw is installed on the output shaft of the rotary servo motor, a movable end claw is installed on the movable seat, and a channel for the carbon rod to pass through is provided on the movable end claw.

[0011] The beneficial effect of adopting the above-mentioned further scheme is: when loading the workpiece, the linear drive mechanism drives the movable seat away from the fixed seat, and sufficient loading and unloading space is reserved between the fixed end claw and the movable end claw. The operator places one end of the workpiece on the fixed end claw, and the linear drive mechanism drives the movable end claw to move until the workpiece is tightened, which is convenient to operate.

[0012] Furthermore, a through hole is provided on the movable seat, a slewing bearing outer ring is fixedly provided on the movable seat, a slewing bearing inner ring is rotatably provided on the inner side of the slewing bearing outer ring, the movable end claw is detachably fixedly connected to the slewing bearing inner ring, and the axis of the slewing bearing inner ring, the axis of the through hole and the axis of the channel coincide with each other.

[0013] The beneficial effect of adopting the above further solution is that the matching arrangement of the slewing bearing outer ring and the slewing bearing inner ring can ensure the stability of the workpiece rotation and accurately control the rotation angle of the workpiece.

[0014] Furthermore, the inner ring of the slewing bearing extends into the through hole, and a plurality of reset grooves are circumferentially spaced on the outer wall of the portion of the inner ring of the slewing bearing arranged in the through hole, and the inner wall of the through hole is provided with mounting grooves with the same number as the reset grooves, and the mounting grooves are provided with compression springs and steel balls, and the steel balls are pressed against the outer wall of the inner ring of the slewing bearing under the elastic action of the compression springs, and when the positions of the mounting grooves correspond one-to-one with the positions of the reset grooves, the steel balls are inserted into the reset grooves.

[0015] The beneficial effect of adopting the above further scheme is: the compression spring presses the steel ball into the reset groove, which can restore the movable end claw to the set position after the processing of a workpiece is completed, avoiding the situation in which the position of the movable end claw cannot be determined due to the rotation of the movable end claw during the cutting process, thereby causing the laser to cut the movable end claw during the cutting process.

[0016] Furthermore, the mounting groove extends to penetrate the outer wall of the movable seat, and an end of the mounting groove away from the inner ring of the rotary bearing is provided with an internal thread, the internal thread is connected to a threaded plug, and one end of the compression spring abuts against the threaded plug.

[0017] The beneficial effect of adopting the above further solution is that it facilitates the installation of the compression spring and the steel ball.

[0018] Furthermore, the linear drive mechanism is a small-stroke cylinder.

[0019] The beneficial effect of adopting the above further solution is that the linear drive mechanism adopts a small-stroke cylinder, which can not only drive the movable end clamping claw to move, but also exert an axial force when clamping the workpiece to ensure that the workpiece is firmly clamped.

[0020] Furthermore, the moving mechanism is a telescopic cylinder.

[0021] The beneficial effects of adopting the above further solution are: the moving mechanism adopts a telescopic cylinder, which has a simple structure and is easy to install and control.

[0022] Furthermore, a plurality of shock-absorbing pads are provided at the bottom of the bed.

[0023] The beneficial effect of adopting the above further solution is that the provision of the shock-absorbing pads can facilitate the leveling of the bed.

[0024] Furthermore, a column is provided between the movable end of the X-axis sliding module and the Z-axis sliding module, the bottom end of the column is fixedly connected to the movable end of the X-axis sliding module, and the top end of the column is fixedly connected to the bottom end of the Z-axis sliding module.

[0025] The beneficial effect of adopting the above further solution is that the setting of the column can avoid the need to set a longer stroke for the Z-axis sliding module while ensuring that the laser cutting head has sufficient height. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the main view of the utility model;

[0027] Figure 2 It is a side view of the utility model;

[0028] Figure 3 It is a top view of the utility model;

[0029] Figure 4 This is a schematic diagram of the installation of the clamping mechanism in the present utility model;

[0030] Figure 5 This is a schematic diagram of the installation of the movable seat and its connecting structure in the utility model;

[0031] Figure 6 Schematic diagram of the inner ring of the slewing bearing in the present invention;

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] 1. Bed; 2. X-axis sliding module; 3. Z-axis sliding module; 4. Laser cutting head; 5. Clamping mechanism; 51. Fixed seat; 52. Linear drive mechanism; 53. Movable seat; 54. Fixed end claw; 55. Movable end claw; 56. Channel; 57. Through hole; 58. Rotary bearing outer ring; 59. Rotary bearing inner ring; 510. Reset groove; 511. Mounting groove; 512. Compression spring; 513. Steel ball; 514. Thread plug; 6. Workpiece; 7. Rotary servo motor; 8. Moving mechanism; 9. Carbon rod; 10. Shock-absorbing pad; 11. Column. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] Example 1

[0036] like Figure 1 、 Figure 2 、 Figure 3 As shown, this embodiment includes a bed 1, and a plurality of shock-absorbing pads 10 are provided at the bottom of the bed 1. The plurality of shock-absorbing pads 10 are evenly arranged at the bottom of the bed 1. When the bed 1 is moved to the working position, the bed 1 can be leveled by adjusting the shock-absorbing pads 10.

[0037] An X-axis sliding module 2 is fixedly provided on the bed 1, and a Z-axis sliding module 3 is installed on the moving end of the X-axis sliding module 2 (the X-axis sliding module 2 and the Z-axis sliding module 3 are conventional technologies in this field, and the specific structure is not described in detail here), which is used to drive the Z-axis sliding module 3 to move back and forth in the X-axis direction. A column 11 is provided between the moving end of the X-axis sliding module 2 and the Z-axis sliding module 3, and the bottom end of the column 11 is fixedly connected to the moving end of the X-axis sliding module 2, and the top end of the column 11 is fixedly connected to the bottom end of the Z-axis sliding module 3. The setting of the column 11 can avoid the need to set a longer stroke for the Z-axis sliding module 3 while ensuring that the laser cutting head 4 is of sufficient height.

[0038] A laser cutting head 4 is installed on the movable end of the Z-axis sliding module 3 to drive the laser cutting head 4 to move up and down in the Z-axis direction; a clamping mechanism 5 for clamping the workpiece 6 is fixed on the bed 1, and the clamping mechanism 5 clamps the workpiece 6 so that the length direction of the workpiece 6 extends along the X-axis direction. A rotary servo motor 7 is provided on the clamping mechanism 5 to drive the workpiece 6 to rotate, and a moving mechanism 8 is fixed on the bed 1. A carbon rod 9 is installed on the moving end of the moving mechanism 8, and the moving mechanism 8 drives the carbon rod 9 to move so that one end of the carbon rod 9 extends into the workpiece 6 clamped by the clamping mechanism 5.

[0039] In this embodiment, the moving mechanism 8 preferably adopts a telescopic cylinder, which has a simple structure and is easy to install and control.

[0040] In this embodiment, there are two clamping mechanisms 5, and the two clamping mechanisms 5 are arranged at intervals. The moving mechanism 8 is arranged between the two clamping mechanisms 5. The clamping mechanism 5 and the moving mechanism 8 are arranged at intervals along the X-axis direction, and the carbon rod 9 is extended along the X-axis direction. The moving mechanism 8 drives the carbon rod 9 to extend into the interior of the workpiece 6 clamped by the two clamping mechanisms 5 respectively. Two clamping mechanisms 5 are used to realize double-station operation. When one clamping mechanism 5 clamps the workpiece 6 for cutting, the other clamping mechanism 5 can realize loading and unloading, thereby improving the processing efficiency of the workpiece 6 and reducing the processing cost.

[0041] Example 2

[0042] like Figure 4 、 Figure 5As shown, in this embodiment, the following improvements are made on the basis of embodiment one: the clamping mechanism 5 includes a fixed seat 51 fixed on the bed 1 and a movable seat 53 fixedly installed on the moving end of the linear drive mechanism 52, the linear drive mechanism 52 is fixed on the bed 1, and is used to drive the movable seat 53 to move along the X-axis direction so that the movable seat 53 approaches or moves away from the fixed seat 51, and the movable seat 53 is arranged on the side of the fixed seat 51 close to the moving mechanism 8; a rotary servo motor 7 is fixed on the fixed seat 51, and a fixed end claw 54 is installed on the output shaft of the rotary servo motor 7, and a movable end claw 55 is installed on the movable seat 53, and the movable end claw 55 is provided with a channel 56 for the carbon rod 9 to pass through.

[0043] In this embodiment, the linear drive mechanism 52 preferably adopts a small-stroke cylinder. The linear drive mechanism 52 adopts a small-stroke cylinder, which can not only drive the movable end claw 55 to move, but also apply axial force when clamping the workpiece 6 to ensure that the workpiece 6 is firmly clamped.

[0044] When loading the workpiece 6, the linear drive mechanism 52 drives the movable seat 53 away from the fixed seat 51, and reserves sufficient loading and unloading space between the fixed end claw 54 and the movable end claw 55. The operator places one end of the workpiece 6 on the fixed end claw 54, and the linear drive mechanism 52 drives the movable end claw 55 to move until the workpiece 6 is pressed tightly; when unloading the workpiece 6, the linear drive mechanism 52 drives the movable seat 53 away from the fixed seat 51, so that the workpiece 6 is detached from the fixed end claw 54 and the movable end claw 55, and then the workpiece 6 can be directly removed from the bed 1, which is easy to operate.

[0045] In this embodiment, the fixed end jaw 54 and the movable end jaw 55 both adopt a three-jaw chuck, and a step-shaped groove matching the outer diameter of the workpiece 6 is provided on the inner side of one end of the jaw that clamps the workpiece 6. The fixed end jaw 54 and the movable end jaw 55 both adopt jaws with fixed shaft diameters. When replacing anchors with different diameters, the fixed end jaw 54 and the movable end jaw 55 need to be replaced.

[0046] like Figure 5 As shown, a through hole 57 is provided on the movable seat 53, and a rotary bearing outer ring 58 is fixedly provided on the movable seat 53. A rotary bearing inner ring 59 is rotatably provided inside the rotary bearing outer ring 58. The movable end claw 55 is detachably fixedly connected to the rotary bearing inner ring 59. The axis of the rotary bearing inner ring 59, the axis of the through hole 57 and the axis of the channel 56 coincide with each other. The coordinated arrangement of the rotary bearing outer ring 58 and the rotary bearing inner ring 59 can ensure the stability of the rotation of the workpiece 6 and accurately control the rotation angle of the workpiece 6.

[0047] Example 3

[0048] This embodiment makes the following further improvements on the basis of the second embodiment: the inner ring 59 of the slewing bearing extends into the through hole 57, and the outer wall of the portion of the inner ring 59 of the slewing bearing arranged in the through hole 57 is provided with a plurality of reset grooves 510 at intervals in the circumferential direction, and the inner wall of the through hole 57 is provided with mounting grooves 511 having the same number as the reset grooves 510, and the mounting grooves 511 are provided with compression springs 512 and steel balls 513, and the steel balls 513 are pressed against the inner ring of the slewing bearing under the elastic action of the compression springs 512. On the outer wall of the ring 59, and when the position of the installation groove 511 corresponds to the position of the reset groove 510 one by one, the steel ball 513 is inserted into the reset groove 510, and the compression spring 512 presses the steel ball 513 into the reset groove 510, so that after the processing of a workpiece 6 is completed, the movable end claw 55 can be restored to the set position, avoiding the situation in the cutting process where the position of the movable end claw 55 cannot be determined due to the rotation of the movable end claw 55, thereby causing the laser to cut the movable end claw 55 during the cutting process.

[0049] In this embodiment, the mounting groove 511 extends to the outer wall of the movable seat 53, and the end of the mounting groove 511 away from the inner ring 59 of the rotary bearing is provided with an internal thread, and the internal thread is connected to a threaded plug 514. One end of the compression spring 512 abuts against the threaded plug 514, which facilitates the installation of the compression spring 512 and the steel ball 513.

[0050] The utility model has the following advantages:

[0051] 1) The equipment is small in size and occupies a small area. Two clamping mechanisms 5 are set to realize double stations. While the No. 1 station is processing, the No. 2 station can load and unload materials, which improves the processing efficiency of the workpiece 6 and reduces the processing cost.

[0052] 2) A movable carbon rod 9 is installed to protect the workpiece 6 and prevent the laser cutting from penetrating the outer wall and damaging the inner wall of the workpiece 6, while not affecting the clamping and loading and unloading of the workpiece 6.

[0053] 3) The workbench jaws have a reset function. After the workpiece 6 is processed once, the fixed end jaw 54 and the movable end jaw 55 can return to their initial positions. The fixed end jaw 54 is automatically reset by the rotary servo motor 7, and the movable end jaw 55 is reset by manual rotation. When the steel ball 513 is stuck in the reset groove 510, the movable end jaw 55 is reset. This can prevent the laser from cutting the jaws of the fixture and also increase the efficiency of loading and unloading.

[0054] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly defined.

[0056] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser cutting machine for processing prestressed steel bar repair internal expansion anchors, characterized in that: The invention comprises a bed (1), wherein an X-axis sliding module (2) is fixedly provided on the bed (1), a Z-axis sliding module (3) is installed on the movable end of the X-axis sliding module (2) for driving the Z-axis sliding module (3) to move back and forth in the X-axis direction, and a laser cutting head (4) is installed on the movable end of the Z-axis sliding module (3) for driving the laser cutting head (4) to move up and down in the Z-axis direction; a clamping mechanism (5) for clamping a workpiece (6) is fixedly provided on the bed (1), and the clamping mechanism (5) is fixedly provided on the bed (1). The mechanism (5) clamps the workpiece (6) so that the length direction of the workpiece (6) extends along the X-axis direction. The clamping mechanism (5) is provided with a rotary servo motor (7) for driving the workpiece (6) to rotate. The bed (1) is fixed with a moving mechanism (8). A carbon rod (9) is installed on the moving end of the moving mechanism (8). The moving mechanism (8) drives the carbon rod (9) to move so that one end of the carbon rod (9) extends into the workpiece (6) clamped by the clamping mechanism (5).

2. A laser cutting machine for processing prestressed steel bar repair internal expansion anchors according to claim 1, characterized in that: There are two clamping mechanisms (5), and the two clamping mechanisms (5) are arranged at intervals. The moving mechanism (8) is arranged between the two clamping mechanisms (5), and the carbon rod (9) is extended along the X-axis direction. The moving mechanism (8) drives the carbon rod (9) to extend into the interior of the workpieces (6) clamped by the two clamping mechanisms (5).

3. The laser cutting machine for processing prestressed steel bar repair internal expansion anchor according to claim 1 is characterized in that: The clamping mechanism (5) includes a fixed seat (51) fixed on the bed (1) and a movable seat (53) fixedly mounted on the movable end of a linear drive mechanism (52), wherein the linear drive mechanism (52) is fixed on the bed (1) and is used to drive the movable seat (53) to move along the X-axis direction so that the movable seat (53) approaches or moves away from the fixed seat (51), and the movable seat (53) is arranged on a side of the fixed seat (51) close to the movable mechanism (8); the rotary servo motor (7) is fixedly mounted on the fixed seat (51), and a fixed end clamping claw (54) is mounted on the output shaft of the rotary servo motor (7); a movable end clamping claw (55) is mounted on the movable seat (53), and a channel (56) for the carbon rod (9) to pass through is provided on the movable end clamping claw (55).

4. The laser cutting machine for processing prestressed steel bar repair internal expansion anchor according to claim 3 is characterized in that: The movable seat (53) is provided with a through hole (57), a rotary bearing outer ring (58) is fixedly provided on the movable seat (53), a rotary bearing inner ring (59) is rotatably provided inside the rotary bearing outer ring (58), the movable end claw (55) is detachably fixedly connected to the rotary bearing inner ring (59), and the axis of the rotary bearing inner ring (59), the axis of the through hole (57) and the axis of the channel (56) coincide with each other.

5. The laser cutting machine for processing prestressed steel bar repair internal expansion anchor according to claim 4, characterized in that: The inner ring (59) of the rotary bearing extends into the through hole (57); a plurality of reset grooves (510) are circumferentially spaced on the outer wall of the portion of the inner ring (59) of the rotary bearing arranged in the through hole (57); the inner wall of the through hole (57) is provided with mounting grooves (511) having the same number as the reset grooves (510); the mounting grooves (511) are provided with compression springs (512) and steel balls (513); the steel balls (513) are pressed against the outer wall of the inner ring (59) of the rotary bearing under the elastic action of the compression springs (512); and when the position of the mounting grooves (511) corresponds to the position of the reset grooves (510), the steel balls (513) are inserted into the reset grooves (510).

6. The laser cutting machine for processing prestressed steel bar repair internal expansion anchor according to claim 5, characterized in that: The mounting groove (511) extends to the outer wall of the movable seat (53), and an end of the mounting groove (511) away from the inner ring (59) of the rotary bearing is provided with an internal thread, and the internal thread is connected to a threaded plug (514), and one end of the compression spring (512) abuts against the threaded plug (514).

7. The laser cutting machine for processing prestressed steel bar repair internal expansion anchor according to claim 3, characterized in that: The linear drive mechanism (52) is a small-stroke cylinder.

8. A laser cutting machine for processing prestressed steel bar repair internal expansion anchors according to any one of claims 1 to 7, characterized in that: The moving mechanism (8) is a telescopic cylinder.

9. A laser cutting machine for processing prestressed steel bar repair internal expansion anchors according to any one of claims 1 to 7, characterized in that: A plurality of shock-absorbing pads (10) are provided at the bottom of the bed (1).

10. A laser cutting machine for processing prestressed steel bar repair internal expansion anchors according to any one of claims 1 to 7, characterized in that: A column (11) is provided between the movable end of the X-axis sliding module (2) and the Z-axis sliding module (3); the bottom end of the column (11) is fixedly connected to the movable end of the X-axis sliding module (2), and the top end of the column (11) is fixedly connected to the bottom end of the Z-axis sliding module (3).

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