Adjustable three-coordinate measurement auxiliary tool

Abstract

The utility model discloses an adjustable three-coordinate measurement auxiliary tool which comprises a base and two supports, guide rails distributed in the left-right direction are fixed to the base, positioning grooves distributed in the front-back direction are further formed in the base, the two supports are arranged on the guide rails in a spaced and slidable mode, and each support is provided with an adjusting block capable of moving up and down. A locking piece used for limiting the position of the adjusting block on the support is arranged between the adjusting block and the support, a quick clamp is arranged on the adjusting block, and the quick clamp is provided with a pressing head making contact with the wheel face of the impeller. The tool has the advantages that impeller type workpieces of different specifications can be stably clamped, and the measurement precision and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to an auxiliary tool, in particular to an adjustable three-coordinate measurement auxiliary tool. Background Art

[0002] Three-dimensional coordinate measurement is a technology used for precision inspection of workpieces. It is widely used in many modern industrial fields such as mechanical manufacturing and the automotive industry. The core of this technology lies in the collection and mapping of the spatial geometry and three-dimensional data of objects. It usually uses grating sensors to obtain accurate data points and uses professional software to complete the construction of three-dimensional models.

[0003] During the three-dimensional coordinate measurement process, a device called a three-dimensional coordinate measuring machine fixture is usually used to ensure that the workpiece can be measured stably. This fixture is also called a three-dimensional coordinate universal fixture or a three-dimensional coordinate flexible fixture. Its main function is to firmly fix the workpiece in the appropriate position while the three-dimensional coordinate measuring machine collects data from different angles.

[0004] However, during actual application, the inventors discovered several significant problems. First, existing universal fixtures cannot effectively provide sufficient clamping force for workpieces with complex structures such as blades or impellers. This can cause the workpiece to shift or even fall off during positioning, affecting the accuracy of the measurement results and even leading to the failure of the entire measurement process.

[0005] Secondly, for impeller-like workpieces of different sizes, existing fixture designs are often difficult to adapt to various size requirements. This means that operators may need to spend more time adjusting the fixture to adapt to the new workpiece, or in some cases, may not be able to find the right setting at all, which not only reduces work efficiency but also increases the complexity of operation. In addition, this limitation also limits the versatility of the fixture, making them perform poorly when facing diversified tasks.

[0006] Therefore, it is urgent to develop a new type of adjustable three-coordinate measurement auxiliary tooling to overcome the above shortcomings and improve the stability, accuracy and adaptability of the three-coordinate measurement process. Utility Model Content

[0007] The purpose of the utility model is to provide an adjustable three-coordinate measurement auxiliary tooling, which can firmly clamp impeller-shaped workpieces of different specifications and improve measurement accuracy and efficiency.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable three-coordinate measurement auxiliary tooling, comprising a base and two brackets, wherein the base is fixed with guide rails distributed left and right, and the base is also provided with positioning grooves distributed front and back, the two brackets are slidably arranged on the guide rails at intervals, each of the brackets is provided with an adjustment block that can move up and down, a locking piece is provided between the adjustment block and the bracket for limiting the position of the adjustment block on the bracket, a quick clamp is provided on the adjustment block, and the quick clamp has a pressure head that contacts the wheel surface of the impeller.

[0009] Preferably, a slider is fixed to the lower end of each bracket, and the slider is in sliding engagement with the guide rail. A locking mechanism is also provided on the slider for locking the position of the slider on the guide rail.

[0010] Preferably, the positioning groove is in a V-shaped structure, and is used to position the axis of the impeller.

[0011] Preferably, the bracket includes a base plate and a support plate, the base plate is fixed on the slider, the support plate is fixedly connected to the base plate, and the adjustment block is provided on the support plate and can move up and down along the support plate.

[0012] Preferably, the support plate is provided with adjustment slots distributed up and down, the adjustment block is provided with a limit block extending into the adjustment slot, the limit block is slidably arranged in the adjustment slot, and the locking member includes a locking bolt, the locking bolt is provided on the support plate, and one end passes through the adjustment and is screwed to the limit block.

[0013] Preferably, the quick clamp is a manual quick clamp.

[0014] Preferably, the pressure head is a rubber pressure head.

[0015] Compared with the prior art, the advantages of the present invention are that: the tooling is mainly composed of a base, guide rails, brackets, adjustment blocks and quick clamps. The base is fixed with guide rails distributed on the left and right, and the two brackets can slide freely along the guide rails to achieve horizontal adjustment. Each bracket is also provided with an adjustment block that can move up and down, and a locking piece is provided between the adjustment block and the bracket, which can lock the adjustment block at different height positions of the bracket to achieve vertical adjustment; a quick clamp is installed on the adjustment block, and the quick clamp has a pressure head that fits the impeller wheel surface. When it is necessary to measure the impeller at a specific position, first align the axis of the impeller with the front and rear V-shaped positioning grooves distributed on the base to locate the axial position of the impeller, and then adjust the sliding positions of the brackets on both sides on the guide rails respectively, so that the two quick clamps clamp the two side wheel surfaces of the impeller respectively, and then move up and down and lock the adjusting block to accurately adjust the contact state of the pressure head with the wheel surface of the measured point.

[0016] This measurement auxiliary tooling has a compact design, simple structure and easy operation. Through the cooperation of the guide rail, bracket and adjustment block, the impeller can be accurately adjusted so that the pressure head can be accurately aligned with any measuring point. The quick clamp provides a convenient clamping means, and the point contact between the pressure head and the wheel surface is also conducive to improving measurement accuracy. The entire adjustment process does not require the aid of other complex tooling auxiliary tools, and alignment can be completed through simple manual operations, greatly improving the efficiency and convenience of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the bracket in the present utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the adjustment block in the utility model;

[0021] In the figure, 1. base; 2. bracket; 3. guide rail; 4. positioning slot; 5. adjustment block; 6. locking piece; 7. quick clamp; 8. pressure head; 9. slider; 10. locking mechanism; 11. bottom plate; 12. support plate; 13. adjustment slot; 14. limit block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] Example 1: Figure 1-Figure 3 As shown, an adjustable three-coordinate measurement auxiliary tooling includes a base 1 and two brackets 2. The base 1 is fixed with guide rails 3 distributed left and right, and the base 1 is also provided with positioning grooves 4 distributed front and back. The two brackets 2 are slidably arranged on the guide rails 3 at intervals. Each bracket 2 is provided with an adjustment block 5 that can move up and down. A locking piece 6 is provided between the adjustment block 5 and the bracket 2 for limiting the position of the adjustment block 5 on the bracket 2. A quick clamp 7 is provided on the adjustment block 5, and the quick clamp 7 has a pressure head 8 that contacts the wheel surface of the impeller.

[0024] The steps for using the device are:

[0025] 1. Place the tool base 1 securely on a suitable surface, with the front and rear positioning slots 4 on the base 1 facing the operator.

[0026] 2. First, align the impeller axis to be measured with the front and rear positioning slots 4 on the base 1 to initially position and fix the impeller's axial position.

[0027] 3. Adjust the sliding positions of the two side brackets 2 on the left and right guide rails 3 so that the two adjustment blocks 5 and the top quick clamp 7 are located at the appropriate positions on the two sides of the impeller.

[0028] 4. Adjust the upper and lower positions of the two side adjustment blocks 5 on the bracket 2 respectively. The operation steps are as follows:

[0029] a) Loosen the locking piece 6 to allow the adjustment block 5 to move up and down on the bracket 2 until it reaches the appropriate position;

[0030] b) Align the pressure head 8 of the quick clamp 7 with the impeller wheel surface position to be measured;

[0031] c) Tighten the locking piece 6 to lock the adjustment block 5 at this height position of the bracket 2.

[0032] 5. Open the quick-action clamps 7 on both sides and make the pressure heads 8 contact the impeller surfaces on both sides.

[0033] 6. Fine-tune the left and right positions of the two brackets 2 and the up and down positions of the two adjustment blocks 5 according to the area to be measured, so that the indenter 8 can be accurately aligned with the measurement area.

[0034] 7. Start measuring the designated position of the impeller using measuring instruments (such as a three-coordinate measuring machine, etc.).

[0035] 8. After the measurement is completed, loosen the quick clamp 7 and remove the impeller to complete the measurement operation.

[0036] Example 2: Figure 1-Figure 3 As shown, different from the first embodiment, a slider 9 is fixed to the lower end of each bracket 2 , and the slider 9 slides with the guide rail 3 . A locking mechanism 10 is also provided on the slider 9 for locking the position of the slider 9 on the guide rail 3 .

[0037] In the above structure, the cooperation between the slider 9 and the guide rail 3 enables the bracket 2 to slide accurately along the left and right directions of the base 1, providing a reliable guide and positioning basis for the position adjustment of the bracket 2 and the quick clamp 7 in the horizontal plane. The use of the guide rail 3 ensures the stability and repeatability of the bracket 2 during horizontal movement, avoiding the position deviation that may be caused by sliding directly on the surface of the base 1.

[0038] A locking mechanism 10 is added to the slider 9. After the bracket 2 is adjusted to a suitable position, the slider 9 can be firmly locked on the guide rail 3 through the locking mechanism 10, avoiding position changes caused by external force disturbances or its own gravity. This locking method is easy to operate and can reliably fix the horizontal position of the bracket 2 to ensure the accuracy of subsequent measurements.

[0039] The locking mechanism 10 usually adopts a manual locking method, such as a bolt, a hook, a wedge, etc. The user only needs to easily tighten or turn the locking member 6 to complete the locking. This locking method does not require the use of a complex mechanism and meets the requirements of convenient and efficient adjustment.

[0040] In this embodiment, the positioning groove 4 is a V-shaped structure, which is used to position the axis of the impeller.

[0041] In the above structure, the V-shaped positioning groove 4 can fit well and limit the freedom of movement of the cylindrical impeller axis. When the impeller axis is placed in the V-shaped groove, the impeller has only one stable position in the radial direction, that is, the axis is just stuck in the angle at the bottom of the V-shaped groove. This can accurately limit the left and right displacement of the impeller axis, so that it remains in the ideal centerline position. At the same time, the inclined surface of the V-shaped groove can play a centering role. Even if the impeller axis has a certain tilt when placed, as long as the axis contacts the inclined surfaces on both sides of the V-shaped groove, gravity will automatically guide the impeller axis to roll and eventually reach the stable state at the bottom of the V-shaped groove. This automatic centering and positioning capability avoids deviations during manual alignment and improves measurement accuracy.

[0042] In addition, the V-groove itself does not exert excessive restraint on the impeller and only serves to assist in positioning. Therefore, it will not affect the subsequent adjustment and alignment of the impeller by the measuring tool. After the measurement is completed, the impeller can be easily removed from the V-groove.

[0043] In this embodiment, the bracket 2 includes a base plate 11 and a support plate 12 . The base plate 11 is fixed on the slider 9 . The support plate 12 is fixedly connected to the base plate 11 . The adjustment block 5 is arranged on the support plate 12 and can move up and down along the support plate 12 .

[0044] In the above structure, the base plate 11 is fixed on the slider 9 and is slidably connected to the guide rail 3, which determines the horizontal displacement of the entire bracket 2. The support plate 12 is vertically fixed on the base plate 11, providing a reliable guide plane for the up and down movement of the adjustment block 5. The support plate 12 provides a straight track for the up and down displacement of the adjustment block 5, avoiding irregular movement of the adjustment block 5. At the same time, the support plate 12 provides a sufficient length stroke, so that the adjustment block 5 can be adjusted up and down within a larger range to meet the needs of measuring impellers of different sizes.

[0045] The two structural units of the base plate 11 and the support plate 12 can be integrally formed or fixedly connected, such as by bolts, to ensure that their relative positions are accurate and orderly. In this way, the adjustment block 5 can maintain a stable relative position relationship with the quick clamp 7 during movement, ensuring that the pressure head 8 can be accurately aligned with the impeller surface.

[0046] Example 3: Figure 1-Figure 3 As shown, what is different from the second embodiment is that the support plate 12 is provided with adjustment grooves 13 distributed up and down, and the adjustment block 5 is provided with a limit block 14 extending into the adjustment groove 13, and the limit block 14 is slidably arranged in the adjustment groove 13. The locking member 6 includes a locking bolt, which is provided on the support plate 12, and one end of the locking bolt passes through the adjustment and is screwed to the limit block 14.

[0047] In the above structure, the design of the adjustment groove 13 and the limit block 14 provides reliable guidance and limitation for the up and down displacement of the adjustment block 5 on the support plate 12. After the limit block 14 extends into the adjustment groove 13, the movement of the adjustment block 5 is limited to the length range of the adjustment groove 13, thereby avoiding the adjustment block 5 from derailing and position displacement.

[0048] The setting of the adjustment slot 13 enables the adjustment block 5 to move along a precise linear trajectory when moving up and down, ensuring the alignment accuracy of the pressure head 8 and the impeller surface. At the same time, the maximum stroke range of the adjustment block 5 can be controlled by using brackets 2 of different specifications to meet the needs of measuring impellers of different sizes.

[0049] The design of the locking bolt provides a means of locking and fixing the adjusting block 5 at any position in the adjusting slot 13. When the adjusting block 5 is moved to the desired measuring position, it is only necessary to tighten the locking bolt to lock the limit block 14 in the adjusting slot 13 to firmly fix the position of the adjusting block 5 and ensure that the pressure head 8 will not shift during subsequent measurements.

[0050] This locking method is simple to operate, requiring only a single locking bolt, eliminating the need for a complex locking mechanism. It embodies the design concept of compact structure and convenient operation. Furthermore, the locking bolt, in conjunction with the limit block 14 and the adjustment slot 13, securely constrains the adjustment block 5 within the plane of the support plate 12, preventing rotational displacement and other disturbances.

[0051] In this embodiment, the quick clamp 7 is a manual quick clamp.

[0052] In the above structure, the manual quick clamp is an existing technology, which is easy and effective to operate. It is usually composed of a handle rod connecting the openable and closable jaws. The operator only needs to pull the handle rod with one hand to open or close the jaws. This manual operation method responds quickly, does not require an external power source, and does not require a complex transmission mechanism. The structure is compact and simple, and is easy to integrate on the adjustment block 5 of the tooling.

[0053] In this embodiment, the pressing head 8 is a rubber pressing head 8 .

[0054] A rubber pressure head 8 is installed at the end of the clamping jaw of the quick clamp 7. The rubber pressure head 8 has a certain degree of softness and cushioning, which can reduce the hard contact with the metal wheel surface of the impeller and reduce the risk of scratching the wheel surface, thereby better protecting the precise impeller surface. At the same time, the softness of the rubber pressure head 8 itself can also adapt to the slight curvature changes of the wheel surface to a certain extent, and the fit is better.

[0055] In addition, the manual quick clamp is easy to operate and maintain, has a long service life, and the rubber pressure head 8 is inexpensive and easy to replace. Even if it is damaged, it can still be replaced at a very low cost.

[0056] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An adjustable three-coordinate measurement auxiliary tooling, characterized by: It includes a base and two brackets, the base is fixed with guide rails distributed left and right, and the base is also provided with positioning grooves distributed front and back, the two brackets are slidably arranged on the guide rails at intervals, each of the brackets is provided with an adjustment block that can move up and down, and a locking piece for limiting the position of the adjustment block on the bracket is provided between the adjustment block and the bracket, and a quick clamp is provided on the adjustment block, and the quick clamp has a pressure head that contacts the wheel surface of the impeller.

2. The adjustable three-coordinate measurement auxiliary tooling according to claim 1, characterized in that: A slider is fixed to the lower end of each bracket, and the slider is slidably matched with the guide rail. A locking mechanism is also provided on the slider for locking the position of the slider on the guide rail.

3. The adjustable three-coordinate measurement auxiliary tooling according to claim 1, characterized in that: The positioning groove is in a V-shaped structure and is used to position the axis of the impeller.

4. The adjustable three-coordinate measurement auxiliary tooling according to claim 2, characterized in that: The bracket includes a bottom plate and a support plate, the bottom plate is fixed on the slider, the support plate is fixedly connected to the bottom plate, and the adjustment block is arranged on the support plate and can move up and down along the support plate.

5. The adjustable three-coordinate measurement auxiliary tooling according to claim 4, characterized in that: The support plate is provided with adjustment slots distributed up and down, the adjustment block is provided with a limit block extending into the adjustment slot, the limit block is slidably arranged in the adjustment slot, and the locking member includes a locking bolt, the locking bolt is provided on the support plate, and one end of the locking bolt passes through the adjustment slot and is screwed to the limit block.

6. The adjustable three-coordinate measurement auxiliary tooling according to claim 1, characterized in that: The quick clamp is a manual quick clamp.

7. The adjustable three-coordinate measurement auxiliary tooling according to claim 1, characterized in that: The pressure head is a rubber pressure head.

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