Novel laser etching positioning clamp

Abstract

The utility model relates to the technical field of laser etching clamps, in particular to a novel laser etching positioning clamp which comprises a clamp base and a hub shaft head, the hub shaft head is clamped on the clamp base, a positioning cavity is formed in the top of the clamp base, a mounting base is arranged at the bottom of the inner side of the positioning cavity, and the hub shaft head is arranged on the mounting base. Positioning frames located on the two sides of the positioning cavity are arranged on the top of the clamp base, a plurality of single-rod hydraulic cylinders are fixedly installed on the installation base, and oil ports of the single-rod hydraulic cylinders are fixedly connected with lower oil way branch pipes. According to the novel laser etching positioning clamp designed by the utility model, the hub shaft head can be preliminarily positioned through mutual matching of the two groups of positioning frames and the positioning cavities, oil is supplied to the lower single-rod hydraulic cylinders and the upper single-rod hydraulic cylinders through the oil path, and the hub shaft head can be clamped on the inner wall of the lower connecting pipe and at the mounting hole; therefore, the hub shaft head is locked on the clamp base, and the stability of the hub shaft head during laser etching machining is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser engraving fixtures, in particular to a novel laser engraving positioning fixture. Background Art

[0002] Laser engraving, also known as laser engraving or laser marking, is a process that uses optical principles to perform surface treatment. Laser engraving has the advantages of fast marking speed, beautiful image marking, high resolution, no wear, wide range, safety and reliability, high accuracy, consistent effect, high speed, low cost, and strong anti-counterfeiting. At present, this process is used in various fields. For example, in the automotive processing industry, laser engraving is usually required for further processing after the hub shaft head is processed. In laser engraving processing, in order to ensure the stability of the parts, it is generally necessary to use a fixture to assist in positioning the parts.

[0003] After checking, the public (announcement) number: CN219402810U discloses a laser engraving positioning fixture, which includes a lower mold, an upper mold is arranged on the upper surface of the lower mold, a cavity is opened on the upper surface of the upper mold, a dial is arranged on the inner side of the cavity, a key slot and a fixing slot are opened on the inner side of the cavity, and buttons and a tripod are installed on the outer surface of the dial. The utility model, by arranging an upper mold, a cavity, a dial, a key slot, a fixing slot, a button and a tripod, can preliminarily limit the placement position of the dial through the cooperation of the upper mold and the cavity, further limit the placement position of the dial through the key slot, the fixing slot, the button and the tripod, and make the dial fit more closely with the inside of the cavity, avoiding damage to the dial or the fixture itself during the clamping and positioning process, and is convenient to take and put.

[0004] The fixture is provided with a cavity that matches the part, and the part is directly placed in the cavity for positioning during laser engraving. However, when the part is directly placed in the cavity, the part lacks a corresponding locking structure, and when the fixture is affected by vibration and other factors, the position will still change, resulting in reduced laser engraving accuracy and affecting the final quality of the product. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and proposes a new type of laser engraving positioning fixture.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of laser engraving positioning fixture, comprising a fixture base and a wheel hub shaft head, the wheel hub shaft head is clamped on the fixture base, the top of the fixture base is provided with a positioning cavity, and the bottom of the inner side of the positioning cavity is provided with a mounting base, the top of the fixture base is provided with a positioning frame located on both sides of the positioning cavity, a plurality of lower single-rod hydraulic cylinders are fixedly installed on the mounting base, and the oil port of the lower single-rod hydraulic cylinder is fixedly connected with a lower oil circuit branch pipe, a plurality of upper single-rod hydraulic cylinders are fixedly installed on the positioning frame, and the output shaft of the upper single-rod hydraulic cylinder is facing the direction of the positioning cavity, the oil port of the upper single-rod hydraulic cylinder is fixedly connected with an upper oil circuit branch pipe, and the lower oil circuit branch pipe and the upper oil circuit branch pipe are fixedly connected with a main oil circuit branch pipe.

[0007] As a further description of the above technical solution: the wheel hub axle head includes a flange, an upper connecting pipe, a lower connecting pipe and a mounting hole, the upper connecting pipe is arranged at the top of the flange, the lower connecting pipe is arranged at the bottom of the flange, and a plurality of mounting holes are arranged on the lower edge of the peripheral side of the flange. The lower single-rod hydraulic cylinder is arranged according to the position after the lower connecting pipe is clamped, and the upper single-rod hydraulic cylinder is arranged according to the position after the mounting hole is clamped. The wheel hub axle head can be locked by cooperating with the lower single-rod hydraulic cylinder and the upper single-rod hydraulic cylinder.

[0008] As a further description of the above technical solution: after the hub axle head is clamped on the top of the fixture base, the flange in the hub axle head is clamped between the two groups of positioning frames, the lower connecting tube is clamped inside the positioning cavity, and the lower connecting tube is sleeved on the outside of the mounting base. The flange is clamped in the two groups of positioning frames, and the lower connecting tube is clamped in the positioning cavity, so as to achieve preliminary positioning of the hub axle head.

[0009] As a further description of the above technical solution: the number of the upper single-rod hydraulic cylinders is the same as the mounting holes. After the flange is clamped inside the two sets of positioning frames, the positions of several of the mounting holes correspond one by one to the positions of the upper single-rod hydraulic cylinders. After the wheel hub axle head is preliminarily positioned by the positioning frame, the output shafts of multiple upper single-rod hydraulic cylinders extend out and are plugged into the mounting holes, limiting the up and down shaking of the wheel hub axle head and ensuring the stability of the wheel hub axle head during laser engraving.

[0010] As a further description of the above technical solution: the lower single-rod hydraulic cylinders are evenly distributed on the mounting base, and the output shafts of the lower single-rod hydraulic cylinders face the outer ring of the mounting base. By cooperating with each other, multiple lower single-rod hydraulic cylinders can tighten the inner wall of the lower connecting tube to achieve firm locking of the hub shaft head.

[0011] As a further description of the above technical solution: the external movable sleeve of the mounting base is provided with a rubber sleeve, and the upper edge of the rubber sleeve is located 1-2 cm above the output shaft of the lower single-rod hydraulic cylinder. When the output shaft of the lower single-rod hydraulic cylinder is extended, the local position of the rubber sleeve can be squeezed to expand and the inner wall of the lower connecting tube can be tightened to ensure the locking effect of the lower single-rod hydraulic cylinder on the wheel hub shaft head.

[0012] As a further description of the above technical solution: a placement groove cooperating with the lower oil branch pipe is opened at the bottom of the clamp base, and the upper oil branch pipe is drum-shaped as a whole, and the upper oil branch pipe surrounds the outside of the positioning frame and the hub axle head, restricting the shape and installation position of the upper oil branch pipe to ensure that the upper oil branch pipe can stably supply oil to the upper single-rod hydraulic cylinder, while avoiding the upper oil branch pipe from affecting the clamping of the hub axle head.

[0013] The utility model has the following beneficial effects:

[0014] The new laser engraving positioning fixture designed by the utility model can perform preliminary positioning of the wheel hub shaft head through the cooperation of two sets of positioning frames and positioning cavities, and supply oil to multiple lower single-rod hydraulic cylinders and upper single-rod hydraulic cylinders through the oil circuit, so as to clamp the wheel hub shaft head at the inner wall of the lower connecting pipe and the mounting hole, thereby locking the wheel hub shaft head on the fixture base, ensuring the stability of the wheel hub shaft head during laser engraving processing, and further ensuring the final quality of the finished product.

[0015] The utility model designs a new laser engraving positioning fixture, and multiple lower single-rod hydraulic cylinders and upper single-rod hydraulic cylinders are connected with the main oil circuit branch pipe through the lower oil circuit branch pipe and the upper oil circuit branch pipe respectively. The multiple lower single-rod hydraulic cylinders and upper single-rod hydraulic cylinders can be synchronously controlled through the main oil circuit branch pipe, thereby improving the degree of integration and reducing the difficulty of operation. In addition, a rubber sleeve is mounted on the outside of the mounting base, and when the output shaft of the lower single-rod hydraulic cylinder is extended, the rubber sleeve can be squeezed to tighten the inner wall of the lower connecting pipe, thereby ensuring the locking effect of the lower single-rod hydraulic cylinder on the hub shaft head and avoiding damage to the inner wall of the lower connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model after overall assembly;

[0017] Figure 2 This is a schematic diagram of the structure of the hub shaft head of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the top of the fixture base of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the connection between the lower single-rod hydraulic cylinder and the upper single-rod hydraulic cylinder of the utility model;

[0020] Figure 5The utility model is a schematic diagram of the structure of the lower single-rod hydraulic cylinder, the upper single-rod hydraulic cylinder and the wheel hub shaft head.

[0021] Legend:

[0022] 1. Fixture base; 2. Positioning frame; 3. Mounting base; 4. Hub shaft head; 41. Flange; 42. Upper connecting pipe; 43. Lower connecting pipe; 44. Mounting hole; 5. Lower single-rod hydraulic cylinder; 6. Lower oil line branch pipe; 7. Upper single-rod hydraulic cylinder; 8. Upper oil line branch pipe; 9. Main oil line branch pipe; 10. Rubber sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Please refer to Figure 1-5 The utility model provides a technical solution: a new type of laser carving positioning fixture, including a fixture base 1 and a hub shaft head 4, the hub shaft head 4 is clamped on the fixture base 1, a positioning cavity is opened on the top of the fixture base 1, and a mounting base 3 is arranged at the bottom of the inner side of the positioning cavity, and a positioning frame 2 is arranged on the top of the fixture base 1 on both sides of the positioning cavity, and the hub shaft head 4 can be preliminarily positioned by cooperating between the two groups of positioning frames 2 and the positioning cavity, a plurality of lower single-rod hydraulic cylinders 5 are fixedly installed on the mounting base 3, and a lower oil branch pipe 6 is fixedly connected to the oil port of the lower single-rod hydraulic cylinder 5, a plurality of upper single-rod hydraulic cylinders 7 are fixedly installed on the positioning frame 2, and the output shaft of the upper single-rod hydraulic cylinder 7 faces the positioning cavity. In the direction of the positioning cavity, an upper oil circuit branch pipe 8 is fixedly connected to the oil port of the upper single-rod hydraulic cylinder 7, and the two sets of positioning frames 2 cooperate with the positioning cavity to preliminarily position the hub shaft head 4, and supply oil to multiple lower single-rod hydraulic cylinders 5 and the upper single-rod hydraulic cylinder 7 through the oil circuit, and the hub shaft head 4 can be clamped at the inner wall of the lower connecting pipe 43 and the mounting hole 44, and the lower oil circuit branch pipe 6 and the upper oil circuit branch pipe 8 are fixedly connected with a main oil circuit branch pipe 9, and multiple lower single-rod hydraulic cylinders 5 and upper single-rod hydraulic cylinders 7 are connected to the main oil circuit branch pipe 9 through the lower oil circuit branch pipe 6 and the upper oil circuit branch pipe 8 respectively, and multiple lower single-rod hydraulic cylinders 5 and upper single-rod hydraulic cylinders 7 can be synchronously controlled through the main oil circuit branch pipe 9 to improve the degree of integration.

[0025] As a further implementation scheme of the above technical scheme: the hub shaft head 4 includes a flange 41, an upper connecting pipe 42, a lower connecting pipe 43 and a mounting hole 44. The upper connecting pipe 42 is arranged at the top of the flange 41, the lower connecting pipe 43 is arranged at the bottom of the flange 41, and a plurality of mounting holes 44 are arranged on the lower edge of the peripheral side of the flange 41. The hub shaft head 4 is a common prior art. The positioning frame 2 of the present application is arranged according to the flange 41, the lower single-rod hydraulic cylinder 5 is arranged according to the position after the lower connecting pipe 43 is clamped, and the upper single-rod hydraulic cylinder 7 is arranged according to the position after the mounting hole 44 is clamped.

[0026] As a further implementation scheme of the above technical scheme: after the hub axle head 4 is clamped on the top of the fixture base 1, the flange 41 in the hub axle head 4 is clamped between the two groups of positioning frames 2, the lower connecting tube 43 is clamped inside the positioning cavity, and the lower connecting tube 43 is sleeved on the outside of the mounting base 3. The flange 41 is clamped in the two groups of positioning frames 2, and the lower connecting tube 43 is clamped in the positioning cavity, so as to achieve preliminary positioning of the hub axle head 4.

[0027] As a further implementation plan of the above technical scheme: the number of upper single-rod hydraulic cylinders 7 is the same as the mounting holes 44. After the hub axle head 4 is preliminarily positioned by the positioning frame 2, the output shafts of multiple upper single-rod hydraulic cylinders 7 are extended and inserted into the mounting holes 44, so as to limit the up and down shaking of the hub axle head 4 and ensure the stability of the hub axle head 4 during laser engraving. After the flange 41 is clamped into the two sets of positioning frames 2, a plurality of mounting holes 44 correspond one by one to the positions of the upper single-rod hydraulic cylinders 7. In addition to corresponding to the mounting holes 44, the mounting position of the upper single-rod hydraulic cylinder 7 can also correspond to the upper edge of the flange 41, so that the output shaft of the upper single-rod hydraulic cylinder 7 is extended and clamped on the upper edge of the flange 41 to limit the up and down shaking of the flange 41.

[0028] As a further implementation scheme of the above technical scheme: the lower single-rod hydraulic cylinders 5 are evenly distributed on the mounting base 3, and the output shaft of the lower single-rod hydraulic cylinders 5 faces the outer ring of the mounting base 3. Through the cooperation of multiple lower single-rod hydraulic cylinders 5, the inner wall of the lower connecting pipe 43 can be tightened to achieve a firm locking of the hub shaft head 4.

[0029] As a further implementation scheme of the above technical scheme: the external movable sleeve of the mounting base 3 is provided with a rubber sleeve 10, and the upper edge of the rubber sleeve 10 is located 1-2 cm above the output shaft of the lower single-rod hydraulic cylinder 5. When the output shaft of the lower single-rod hydraulic cylinder 5 is extended, the local position of the rubber sleeve 10 can be squeezed to expand and the inner wall of the lower connecting tube 43 can be tightened to ensure the locking effect of the lower single-rod hydraulic cylinder 5 on the hub shaft head 4, while avoiding damage to the inner wall of the lower connecting tube 43.

[0030] As a further implementation scheme of the above technical scheme: a placement groove cooperating with the lower oil branch pipe 6 is opened at the bottom of the clamp base 1, and the lower oil branch pipe 6 can be snapped into the placement groove to prevent the lower oil branch pipe 6 from protruding from the bottom of the clamp base 1, and to prevent the lower oil branch pipe 6 from affecting the installation of the clamp base 1. The upper oil branch pipe 8 is drum-shaped as a whole, and the upper oil branch pipe 8 surrounds the outside of the positioning frame 2 and the hub shaft head 4, restricting the shape and installation position of the upper oil branch pipe 8 to ensure that the upper oil branch pipe 8 can stably supply oil to the upper single-rod hydraulic cylinder 7, while preventing the upper oil branch pipe 8 from affecting the clamping of the hub shaft head 4.

[0031] Working principle:

[0032] When using the utility model, the main oil circuit branch pipe 9 is connected with the oil supply device in the prior art, and the oil supply device injects hydraulic oil into the lower single-rod hydraulic cylinder 5 and the upper single-rod hydraulic cylinder 7 along the main oil circuit branch pipe 9, the lower oil circuit branch pipe 6, and the upper oil circuit branch pipe 8, so that the output shafts of the lower single-rod hydraulic cylinder 5 and the upper single-rod hydraulic cylinder 7 can be extended, and the oil supply device sucks the hydraulic oil along the main oil circuit branch pipe 9, the lower oil circuit branch pipe 6, and the upper oil circuit branch pipe 8, so that the output shafts of the lower single-rod hydraulic cylinder 5 and the upper single-rod hydraulic cylinder 7 can be contracted; the wheel hub shaft head 4 is clamped on the fixture base 1 as a whole, the flange 41 is clamped in the two groups of positioning frames 2, the lower connecting pipe 43 is clamped in the positioning cavity, and the lower connecting pipe 43 is sleeved on the outside of the mounting base 3, and the positioning frame 2 is After the flange 41 is positioned, the mounting hole 44 corresponds to the position of the upper single-rod hydraulic cylinder 7, and the wheel hub shaft head 4 is initially positioned by cooperating with the two sets of positioning frames 2 and the positioning cavity; hydraulic oil is injected into the lower single-rod hydraulic cylinder 5 and the upper single-rod hydraulic cylinder 7 along the main oil branch pipe 9, the lower oil branch pipe 6, and the upper oil branch pipe 8 through the oil supply equipment, and the output shafts of multiple lower single-rod hydraulic cylinders 5 extend out to squeeze the local position of the rubber sleeve 10 to expand, and press against the inner wall of the lower connecting pipe 43, and the output shafts of multiple upper single-rod hydraulic cylinders 7 extend out and are inserted into the mounting holes 44 at the corresponding positions. Multiple lower single-rod hydraulic cylinders 5 cooperate with the upper single-rod hydraulic cylinder 7 to lock the wheel hub shaft head 4 on the basis of preliminary positioning, so that the wheel hub shaft head 4 remains stable during laser engraving.

[0033] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel laser engraving positioning fixture, comprising a fixture base (1) and a hub shaft head (4), wherein the hub shaft head (4) is clamped on the fixture base (1), and characterized in that: A positioning cavity is provided on the top of the clamp base (1), and a mounting base (3) is provided on the bottom of the inner side of the positioning cavity. A positioning frame (2) is provided on the top of the clamp base (1) and is located on both sides of the positioning cavity. A plurality of lower single-rod hydraulic cylinders (5) are fixedly mounted on the mounting base (3), and a lower oil circuit branch pipe (6) is fixedly connected to the oil port of the lower single-rod hydraulic cylinder (5). A plurality of upper single-rod hydraulic cylinders (7) are fixedly mounted on the positioning frame (2), and the output shaft of the upper single-rod hydraulic cylinder (7) faces the positioning cavity. An upper oil circuit branch pipe (8) is fixedly connected to the oil port of the upper single-rod hydraulic cylinder (7), and a main oil circuit branch pipe (9) is fixedly connected to the lower oil circuit branch pipe (6) and the upper oil circuit branch pipe (8).

2. A new laser engraving positioning fixture according to claim 1, characterized in that: The hub shaft head (4) comprises a flange (41), an upper connecting pipe (42), a lower connecting pipe (43) and mounting holes (44); the upper connecting pipe (42) is arranged at the top of the flange (41), the lower connecting pipe (43) is arranged at the bottom of the flange (41), and a plurality of mounting holes (44) are arranged at the lower edge of the peripheral side of the flange (41).

3. A new laser engraving positioning fixture according to claim 2, characterized in that: After the wheel hub shaft head (4) is clamped on the top of the fixture base (1), the flange (41) in the wheel hub shaft head (4) is clamped between the two sets of positioning frames (2), the lower connecting pipe (43) is clamped inside the positioning cavity, and the lower connecting pipe (43) is sleeved on the outside of the mounting base (3).

4. A new laser engraving positioning fixture according to claim 3, characterized in that: The number of the upper single-rod hydraulic cylinders (7) is the same as the number of the mounting holes (44). After the flange (41) is clamped inside the two sets of positioning frames (2), the positions of the plurality of mounting holes (44) and the upper single-rod hydraulic cylinders (7) correspond one to one.

5. The new laser engraving positioning fixture according to claim 1 is characterized by: The lower single-rod hydraulic cylinders (5) are evenly distributed on the mounting base (3), and the output shafts of the lower single-rod hydraulic cylinders (5) face the outer ring of the mounting base (3).

6. The new laser engraving positioning fixture according to claim 1 is characterized by: The outer movable sleeve of the mounting base (3) is provided with a rubber sleeve (10), and the upper edge of the rubber sleeve (10) is located 1-2 cm above the output shaft of the lower single-rod hydraulic cylinder (5).

7. The novel laser engraving positioning fixture according to claim 1 is characterized by: The bottom of the clamp base (1) is provided with a placement groove that cooperates with the lower oil branch pipe (6); the upper oil branch pipe (8) is drum-shaped as a whole, and the upper oil branch pipe (8) surrounds the positioning frame (2) and the outside of the hub shaft head (4).

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