Anti-collision device of measuring head for machining

Abstract

The utility model discloses an anti-collision device of a measuring head for machining, which comprises an anti-collision seat, the middle part of the anti-collision seat is provided with a connecting seat for connecting a measuring rod, the anti-collision seat is provided with a plurality of anti-collision protection plates, the anti-collision protection plates are arranged perpendicular to the anti-collision seat, and an area enclosed by the plurality of anti-collision protection plates is used for accommodating the measuring head; a plurality of positioning connecting holes are formed in the anti-collision seat, the positioning connecting holes are connected with the anti-collision protection plate, and a plurality of circles of positioning connecting holes are formed from outside to inside. According to the anti-collision device of the measuring head for machining, through the arrangement of the anti-collision seat and the anti-collision protection plate, the measuring rod below the measuring head can be protected, damage caused by collision between the measuring rod and a workpiece during measurement can be avoided, the measuring head main body can be protected, damage caused by accidental collision of the measuring head main body part can be avoided, and the anti-collision device is relatively simple in structure and convenient to use. The device is easy to manufacture, install and use, and good in flexibility and adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an anti-collision device of a measuring head used for mechanical processing. Background Art

[0002] CNC machine tool probes can automatically identify and compensate for precision errors introduced during machining, ensuring higher precision in finished parts. The probe directly contacts the workpiece or tool to measure its dimensions and position, automatically adjusting machine tool parameters based on the measurement results to achieve higher machining accuracy. Touch-trigger probes were developed earlier and are relatively mature. The probe's position coordinates are primarily stored within the machining equipment's control system, and their accuracy depends primarily on the machine's positioning accuracy. Using a workpiece probe system, the position of the workpiece can be quickly and accurately measured on the machine tool, and the measurement results are directly fed back to the CNC system to correct the machine's workpiece coordinate system. If the machine tool has a CNC rotary table, the probe can also automatically locate the workpiece reference surface, automatically completing tasks such as adjusting the base surface and setting the workpiece coordinate system. This simplifies fixtures, reduces fixture costs, shortens machine tool auxiliary time, significantly improves cutting efficiency, and ensures a more uniform cutting volume and a smoother cutting process. During batch processing using tool radius compensation, the probe can also be used to automatically measure the size of the workpiece, automatically correct the tool offset based on the measurement results, and compensate for tool wear to ensure the consistency of workpiece size and accuracy.

[0003] Under normal circumstances, as shown in the instructions Figures 6-8 As shown in the figure, the probe moves to one side, so that the probe ball contacts the part, and the probe rod tilts. At this time, the probe body receives the touch signal and controls the probe to return. However, in actual use, the following error may occur in the manual: Figure 9 The problem is that when the part is not properly clamped, the probe body will hit the part before the stylus ball touches the part. At this time, since the probe body does not receive the contact signal from the stylus ball or the stylus rod, the stylus ball will continue to move towards the part, eventually causing damage to the probe body or even the machining center. In addition, as shown in the attached manual Figure 10 As shown in the figure, when the operator controls the probe to move downward too much, the probe body contacts the part before the stylus ball touches the part. At this time, since the probe body does not receive the contact signal from the stylus ball or stylus rod, the stylus ball body will continue to move toward the part, which may also cause damage to the probe body and even the machining center. Summary of the Invention

[0004] The purpose of the utility model is to provide an anti-collision device for a measuring head used in machining in order to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The application discloses a collision-preventing device for a measuring head for machining, which comprises a collision-preventing base, a connecting base for connecting a measuring rod arranged in the middle of the collision-preventing base, and a plurality of collision-preventing guards arranged perpendicularly to the collision-preventing base, wherein an area surrounded by the collision-preventing guards is used for accommodating a measuring head, and a plurality of positioning connecting holes are arranged on the collision-preventing base and connected with the collision-preventing guards.

[0007] The collision-preventing device for the measuring head for machining can not only protect the measuring rod below the measuring head and avoid damage caused by collision with a workpiece during measurement, but also protect the measuring head body and avoid damage caused by accidental collision.

[0008] The collision-preventing base can protect the measuring rod after being connected with the connecting base, and will not affect the normal work of the measuring rod, and the measuring ball below the measuring rod can normally work in a non-collision state.

[0009] The positioning connecting holes are arranged in multiple circles, the collision-preventing guards can be arranged according to the positions of the inner and outer circles, the size of the area surrounded by the collision-preventing guards can be adjusted, and thus the collision-preventing device can be adapted to measuring heads of various types and the applicability of the collision-preventing device is improved.

[0010] Further, the collision-preventing base comprises a collision-preventing inner circle and a collision-preventing outer circle, a plurality of radial spokes are arranged between the collision-preventing inner circle and the collision-preventing outer circle, the collision-preventing guards are arranged on the radial spokes or the collision-preventing outer circle, and the connecting base is arranged on the collision-preventing inner circle.

[0011] Further, the positioning connecting holes are arranged on each radial spoke, and the collision-preventing outer circle is also provided with the positioning connecting holes at the radial lines of each radial spoke.

[0012] Further, the connecting base is arranged at the central part of the collision-preventing inner circle and is provided with an installation hole penetrating the connecting base in the up-down direction, the installation hole is used for penetrating the measuring rod, and the connecting base is further provided with a radial limiting hole provided with a limiting piece connected with the measuring rod.

[0013] Further, the positioning connecting holes in the radial direction are arranged at intervals of 8-20 mm, and the positioning connecting holes in the circumferential direction are arranged at intervals of 60-120 degrees.

[0014] Further, the bottom of the anti-collision guard is provided with a connecting pin which is inserted into the positioning connecting hole.

[0015] Further, the inner side of the anti-collision guard is provided with a reinforcing rib.

[0016] Further, the upper position of the inner side of the anti-collision guard is further provided with an anti-collision elastic pad.

[0017] Further, the height of the anti-collision guard is not more than the height of the measuring head, and is not less than 2 / 3 of the height of the measuring head.

[0018] Compared with the prior art, the anti-collision device for the measuring head has the following beneficial effects: 1. The anti-collision device for the measuring head is provided with the anti-collision seat and the anti-collision guard, so as to not only protect the measuring rod below the measuring head and avoid damage caused by collision with the workpiece during measurement, but also protect the measuring head body and avoid damage caused by accidental collision; moreover, the structure of the anti-collision device is relatively simple, and the anti-collision device is easy to manufacture, install and use, and has good flexibility and adaptability; 2. The positioning connecting hole is provided with multiple rings, the anti-collision guard can be arranged according to the positions of the inner and outer rings, so that the size of the enclosed area of the anti-collision guard can be adjusted, thereby the anti-collision guard can be adapted to measuring heads of various models, and the applicability of the entire anti-collision device is improved; 3. The anti-collision seat with the structure can not only conveniently connect the measuring rod and the anti-collision guard, but also has good structural stability and strength, and has a relatively light self-weight under the same material and outer contour size, so as to reduce the load of the measuring rod and save raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the anti-collision device for the measuring head for machining.

[0020] Figure 2 It is a structural schematic view of the anti-collision seat of the anti-collision device.

[0021] Figure 3 It is a structural schematic view of the anti-collision guard of the anti-collision device.

[0022] Figure 4 It is a schematic view of the anti-collision device connecting a large-diameter measuring head (the anti-collision guard is close to the outside).

[0023] Figure 5 It is a schematic view of the anti-collision device connecting a small-diameter measuring head (the anti-collision guard is close to the inside).

[0024] Figure 6 It is a schematic view of the measuring head working when a part is normally clamped. Figure 1 ;

[0025] Figure 7This is a diagram showing the probe working when the part is clamped normally. Figure 2 ;

[0026] Figure 8 This is a diagram showing the probe working when the part is clamped normally. Figure 3 ;

[0027] Figure 9 This is a schematic diagram of the probe working when the part is not clamped properly;

[0028] Figure 10 This is a schematic diagram of the probe's excessive downward displacement;

[0029] In the figure: 1. Probe; 2. Probe rod; 3. Probe ball; 4. Anti-collision seat; 401. Connecting seat; 402. Anti-collision inner ring; 403. Anti-collision outer ring; 404. Radial spokes; 405. Positioning connection holes; 406. Mounting holes; 407. Radial limit holes; 5. Anti-collision guard plate; 501. Reinforcement ribs; 502. Anti-collision elastic pad; 6. Parts. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings to clearly and completely describe the technical solution of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0032] like Figures 1-5 As shown, an anti-collision device for a probe for machining includes an anti-collision seat 4, a connecting seat 401 for connecting a measuring rod is provided in the middle of the anti-collision seat 4, a plurality of anti-collision guard plates 5 are provided on the anti-collision seat 4, the anti-collision guard plates 5 are arranged perpendicular to the anti-collision seat 4, and the area enclosed by the plurality of anti-collision guard plates 5 is used to accommodate the probe body; a plurality of positioning connection holes 405 are provided on the anti-collision seat 4, the positioning connection holes 405 are connected to the anti-collision guard plates 5, and the positioning connection holes 405 are provided with multiple circles from the outside to the inside.

[0033] The anti-collision device of the machining probe can protect the measuring rod 2 below the probe and avoid damage caused by collision with the workpiece during measurement, and can also protect the probe body and avoid damage caused by accidental collision. Moreover, the structure of the anti-collision device is relatively simple, easy to manufacture, install and use, and has good flexibility and adaptability.

[0034] Specifically, by providing the anti-collision seat 4 with the anti-collision guard 5 on the measuring rod 2, the anti-collision seat 4 is located below the probe body, and the anti-collision guard 5 surrounds the outer periphery of the probe body, which can simultaneously avoid the problem of damage to the probe or the machine caused by the part colliding with the probe body due to poor clamping or the operator controlling the probe to displace too much downward. When encountering a poorly clamped part, the anti-collision seat on the measuring rod will collide with the part first, at which time the measuring rod will tilt, the probe body will receive a contact signal and transmit it to the machining center, and then the machining center will control the probe to return, thereby avoiding damage caused by the part colliding with the probe body. When the operator controls the probe to displace too much downward or operates improperly, since the anti-collision guard exists around the probe, the anti-collision guard will collide with the part first, the anti-collision guard is rigidly connected with the anti-collision seat, and the anti-collision guard will cause the anti-collision seat to displace slightly, at which time the measuring rod connected with the anti-collision seat will tilt, the probe body will receive a contact signal and transmit it to the machining center, and then the machining center will control the probe to return, thereby avoiding damage caused by the part colliding with the probe body, and further preventing damage caused by the operator controlling the probe to displace too much downward.

[0035] The anti-collision seat 4 is connected with the measuring rod 2 through the connecting seat 401, and can protect the measuring rod 2, but will not affect the normal work of the measuring rod 2. The measuring ball 3 below the measuring rod 2 normally functions in a non-collision state. The area enclosed by the anti-collision guard 5 forms a circumferential protection within a certain range, which can protect the probe body contained therein. The anti-collision guard 5 is connected through the positioning connection hole 405, which is relatively simple and convenient.

[0036] The positioning connection hole 405 is provided with multiple rings, and the anti-collision guard 5 can be arranged according to the positions of the inner and outer rings, so that the size of the enclosed area of the anti-collision guard 5 can be adjusted, thereby being able to adapt to multiple types of probes and improving the applicability of the entire anti-collision device.

[0037] Further, the anti-collision seat 4 includes an anti-collision inner ring 402 and an anti-collision outer ring 403, multiple radial spokes 404 are arranged between the anti-collision inner ring 402 and the anti-collision outer ring 403, the anti-collision guard 5 is arranged on the radial spokes 404 or the anti-collision outer ring 403, and the connecting seat 401 is arranged on the anti-collision inner ring 402.

[0038] The anti-collision seat with the structure can conveniently connect the measuring rod and the anti-collision guard, has good structural stability and strength, is lighter in weight under the same material and outer contour size, can reduce the load of the measuring rod, and can save raw materials.

[0039] Further, each of the radial spokes 404 is provided with the positioning connecting hole 405, and the anti-collision outer ring 403 is also provided with the positioning connecting hole 405 at the radial line of each radial spoke. The radial spoke 404 not only serves to connect the anti-collision inner ring and the anti-collision outer ring, but also serves as a support beam to provide the positioning connecting hole and connect and install the anti-collision guard, and a plurality of positioning connecting holes can be provided according to the length of the size.

[0040] Further, the positioning connecting holes 405 in the radial direction are arranged at intervals of 8-20 mm, and the interval can control the size of the enclosed area of the anti-collision guard; the positioning connecting holes 405 in the circumferential direction are arranged at intervals of 60-120°, that is, how many anti-collision guards are arranged in a circle.

[0041] In this embodiment, in order to adapt to measuring head bodies of different diameters, the installation position of the guard also needs to change, too far distance will cause center overflow, affecting the measurement accuracy, too close distance will cause the guard to deform in the process of collision, further causing the guard to knock on the measuring head body and damage the measuring head. The number of the positioning connecting holes can be 2-5 circles, and two circles are preferably adopted in the application, because the commonly used measuring head diameters are 40 mm and 60 mm, which can be better adapted.

[0042] Further, the connecting seat 401 is arranged at the central part of the anti-collision inner ring 402 and is provided with an upper and lower penetrating mounting hole 406, the mounting hole 406 is used for penetrating the measuring rod 2; the connecting seat 401 is further provided with a radial limiting hole 407, the radial limiting hole 407 is provided with a limiting piece connected with the measuring rod 2, and the limiting piece can be a limiting pin or a screw. In this embodiment, the limiting piece is a screw, and the screw is fastened through the radial limiting hole and the measuring rod after penetrating the radial limiting hole and the measuring rod.

[0043] Further, the bottom of the anti-collision guard 5 is provided with a connecting pin, and the connecting pin is inserted into the positioning connecting hole 405. The connecting pin can be a cylindrical pin, a conical pin or a special-shaped pin. A magnet (embedded magnet at the bottom or in the circumferential direction) can also be arranged in the positioning connecting hole, so as to attract the connecting pin, which is a metal pin.

[0044] In some embodiments, the connecting pin can also be a threaded pin, which can more stably connect the anti-collision guard.

[0045] Further, the inner side of the anti-collision guard plate 5 is provided with a reinforcing rib 501. The reinforcing rib 501 is arranged vertically, and its structure can strengthen the structural strength of the anti-collision guard plate when colliding with a part, avoiding that the plate is broken to cause the probe to collide with the part.

[0046] Further, the upper position of the inner side of the anti-collision guard plate 5 is further provided with an anti-collision elastic pad 502, which is a convex structure. The protruding amount of the anti-collision elastic pad 502 is greater than that of the reinforcing rib 501, and the anti-collision elastic pad 502 is made of a flexible material, such as rubber products, and is connected to the anti-collision guard plate 5 by bonding, which can be deformed and absorb collision energy when colliding with a part, so as to avoid that the end of the anti-collision guard plate causes damage to the probe body.

[0047] Further, the height of the anti-collision guard plate 5 is not more than the height of the probe body, and is not less than 2 / 3 of the height of the probe body, which protects the probe within a certain height range.

[0048] The anti-collision guard plate 5 can be an L-shaped plate, which has strong universality and can be adapted to probe bodies of different sizes. The inner diameter of the area surrounded by the anti-collision guard plate is 3mm-14mm, preferably about 8mm, greater than the diameter of the probe body.

[0049] Due to product characteristics, processing technology, production cost and weight requirements, it is necessary to shorten the research and development cycle and reduce the production time. The 3D printing technology can be used to produce the probe anti-collision device, that is, the normal use of the probe is not affected, and the service life of the probe is prolonged.

[0050] 3D printing is a kind of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses powder-like metal or plastic and other materials that can be bonded to construct objects through layer-by-layer printing based on 3D model files. The anti-collision seat and the anti-collision guard plate of the anti-collision device are produced in small batches by 3D printing, and are made of ABS material, which has the characteristics of low cost, light weight, high strength and fast production speed.

[0051] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-collision device for a machining probe, comprising an anti-collision seat, wherein a connecting seat for connecting a measuring rod is provided in the middle of the anti-collision seat, characterized in that: The anti-collision seat is provided with multiple anti-collision guard plates, which are arranged perpendicular to the anti-collision seat, and the area enclosed by the multiple anti-collision guard plates is used to accommodate the probe body; the anti-collision seat is provided with multiple positioning connection holes, which are connected to the anti-collision guard plates, and the positioning connection holes are provided with multiple circles from the outside to the inside.

2. The anti-collision device for a machining probe according to claim 1, wherein: The anti-collision seat includes an anti-collision inner ring and an anti-collision outer ring, a plurality of radial spokes are provided between the anti-collision inner ring and the anti-collision outer ring, the anti-collision guard plate is provided on the radial spokes or the anti-collision outer ring, and the connecting seat is provided on the anti-collision inner ring.

3. The anti-collision device for a machining probe according to claim 2, characterized in that: The positioning connection hole is respectively provided on each of the radial spokes, and the anti-collision outer ring is also provided with the positioning connection hole at the radial line where each of the radial spokes is located.

4. The anti-collision device for a machining probe according to claim 2, wherein: The connecting seat is arranged in the middle of the anti-collision inner ring and is provided with a mounting hole running through the upper and lower parts, and the mounting hole is used to pass the measuring rod; the connecting seat is also provided with a radial limiting hole, and the radial limiting hole is provided with a limiting piece connected to the measuring rod.

5. The anti-collision device for a machining probe according to claim 1, wherein: The positioning connection holes are arranged at intervals of 8 to 20 mm in the radial direction, and are arranged at intervals of 60 to 120 degrees in the circumferential direction.

6. The anti-collision device for a machining probe according to claim 1, wherein: A connecting pin is provided at the bottom of the anti-collision guard plate, and the connecting pin is inserted into the positioning connecting hole.

7. The anti-collision device for a machining probe according to claim 1, wherein: The inner side of the anti-collision guard plate is provided with reinforcing ribs.

8. The anti-collision device for a machining probe according to claim 1, wherein: An anti-collision elastic pad is further provided at the upper inner side of the anti-collision guard plate.

9. The anti-collision device for a machining probe according to claim 1, wherein: The height of the anti-collision guard plate does not exceed the height of the measuring head and is not less than 2 / 3 of the height of the measuring head.

Images