An assembly positioning aid for a numerically controlled measuring apparatus

Abstract

The utility model relates to positioning auxiliary tool technical field, concretely relates to a kind of assembly positioning auxiliary tool for numerical control measuring equipment, including cross positioning tool, the cross positioning tool bottom is provided with workbench, the utility model is set up by arc, V, L three different structures of positioning module, corresponding module can be flexibly replaced according to the shape of the workpiece to be measured, and positioning module is connected with cross positioning tool by locking assembly, and the datum of workbench and cross positioning tool does not need to be recalibrated in replacement process, effectively solve the adaptation limitation of traditional tool, and the adaptation range covers most common workpiece shape, locking assembly uses the sliding guide structure of slide rail and sliding block, and the positioning cooperation of cooperating positioning block and slot, the installation position of positioning module can be accurately limited.

Description

Technical Field

[0001] This utility model relates to the field of positioning auxiliary tools, specifically to an assembly positioning auxiliary tool for CNC measuring equipment. Background Technology

[0002] In workpiece positioning scenarios using CNC measuring equipment such as coordinate measuring machines and precision image measuring instruments, traditional cross-shaped alignment and positioning auxiliary tools are commonly used basic equipment. They are mostly made of 45 steel or ordinary aluminum alloy in one piece, with cross arms orthogonally distributed and L-shaped positioning surfaces fixed at both ends. The core relies on geometric datum constraints and rigid locking to achieve workpiece positioning.

[0003] In existing technologies, traditional cross-shaped positioning auxiliary tools have cross arms that are orthogonally distributed and fixed at both ends with a single type of L-shaped positioning surface. The cross arms lack a universal connection structure to adapt to different positioning modules, and there is no reserved reference alignment guarantee mechanism after module installation. As a result, the tool can only achieve positioning for workpieces of a single shape, such as fixedly adaptable to square workpieces or circular workpieces with a specific diameter range. It cannot change the corresponding positioning module according to changes in workpiece shape, thus resulting in poor adaptability. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an assembly positioning auxiliary tool for CNC measuring equipment, which can effectively solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides an assembly positioning auxiliary tool for CNC measuring equipment; it includes a cross positioning tool, a worktable is provided at the bottom of the cross positioning tool, and positioning modules are provided at the four right angles of the cross positioning tool. The positioning modules are respectively designed in an arc shape, a V shape and an L shape, and a locking component is provided between the positioning modules and the cross positioning tool.

[0007] The locking component includes two sets of slide rails symmetrically opened on the outer walls of the front and rear ends of the cross-shaped positioning tool. A slider is slidably connected inside the slide rail. The outer end of the slider is fixedly connected to the positioning module. A positioning block is fixedly connected to the inner wall of the positioning module.

[0008] Furthermore, the cross-shaped positioning tool is connected to the workbench by bolts. A slot is provided on the outer wall of the positioning block corresponding to the outer wall of the cross-shaped positioning tool. The positioning block is slidably connected to the slot. A fixed seat is fixedly connected to the top of the cross-shaped positioning tool. A connecting block is slidably connected inside the fixed seat. The other end of the connecting block is fixedly connected to the positioning module. A sliding groove is provided inside the fixed seat. A sliding plate is slidably connected inside the sliding groove. A sliding rod is fixedly connected to the top of the sliding plate. The sliding rod is slidably connected to the fixed seat. A spring is wound around the surface of the sliding rod in the sliding groove. Insert blocks are symmetrically fixedly connected to both sides of the sliding rod. The insert blocks are slidably connected to the connecting block and pass through the connecting block.

[0009] Furthermore, the insert is rectangular in shape, and the connecting block has through holes that are adapted to the insert.

[0010] Furthermore, a pull ring is fixedly connected to the top of the slide rod, and the surface of the pull ring is provided with anti-slip texture.

[0011] Furthermore, the cross-shaped positioning tool is provided with a clamping assembly for clamping the workpiece. The clamping assembly includes guide grooves equidistantly opened at the four corners of the worktable. A guide block is slidably connected in the guide groove. A clamping block is fixedly connected to the top of the guide block. A threaded rod is threadedly connected in the worktable. The other end of the threaded rod is rotatably connected to the guide block.

[0012] Furthermore, a soft pad is fixedly connected to the side of the clamping block facing the positioning module, and the area of ​​the soft pad is equal to the clamping area of ​​the clamping block.

[0013] Furthermore, the cross-shaped positioning tool has four sets of positioning slots equidistantly arranged inside, and a positioning rod is fixedly connected to the worktable surface in the positioning slot. The positioning slot and the positioning rod are slidably connected.

[0014] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0015] 1. This utility model, by setting up positioning modules with three different structures—arc, V-shaped, and L-shaped—allows for flexible replacement of the corresponding module according to the shape of the workpiece to be measured. The positioning module is connected to the cross-shaped positioning tool through a locking component. During the replacement process, there is no need to recalibrate the reference of the worktable and the cross-shaped positioning tool, effectively solving the limitations of traditional tool compatibility. The compatibility range covers most common workpiece shapes. The locking component adopts a sliding guide structure of slide rail and slider, which, together with the positioning block and slot positioning cooperation, can accurately limit the installation position of the positioning module. At the same time, the spring-driven plug in the fixed seat inserts into the connecting block to form a double fixation, avoiding module loosening caused by vibration or external force, further enhancing the reference stability, and the positioning accuracy can be stably controlled within a high precision range.

[0016] 2. This utility model, through the soft pad design on the side of the clamping block facing the positioning module, can avoid scratches and indentations on the workpiece surface caused by rigid contact when clamping the workpiece. It is especially suitable for positioning fragile workpieces such as thin-walled parts and precision parts, effectively reducing the scrap rate in the workpiece measurement process and ensuring workpiece quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the component structure of the slide rail in this utility model;

[0021] Figure 4 This is a schematic diagram of the two-piece structure of the slider in this utility model;

[0022] Figure 5 This is a schematic diagram of the disassembled structure of the locking component of this utility model.

[0023] The labels in the diagram represent: 1. Cross-shaped positioning tool; 2. Worktable; 3. Positioning module; 4. Locking component; 41. Slide rail; 42. Slider; 43. Positioning block; 44. Slot; 45. Fixing base; 46. Connecting block; 47. Slide groove; 48. Slide plate; 49. Spring; 410. Slide rod; 411. Insert block; 5. Clamping component; 51. Guide groove; 52. Guide block; 53. Clamping block; 54. Threaded rod; 55. Positioning groove; 56. Positioning rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Example 1:

[0027] Reference Figures 1 to 5 This is the first embodiment of the present invention, which discloses an assembly positioning auxiliary tool for CNC measuring equipment. The tool includes a cross-shaped positioning tool 1, a worktable 2 at its bottom, and positioning modules 3 at each of the four right angles of the tool. The positioning modules 3 are respectively designed in an arc, V-shape, and L-shape. A locking component 4 is provided between the positioning modules 3 and the cross-shaped positioning tool 1. The locking component 4 includes two sets of slide rails 41 symmetrically arranged on the outer walls of the front and rear ends of the cross-shaped positioning tool 1. A slider 42 is slidably connected inside the slide rails 41, and the outer end of the slider 42 is fixedly connected to the positioning module 3. A positioning block 43 is fixedly connected to the inner wall of the positioning module 3, and the outer wall of the positioning block 43 corresponds to the outer wall of the cross-shaped positioning tool 1. The wall has a slot 44, and the positioning block 43 is slidably connected to the slot 44. The cross positioning tool 1 is connected to the workbench 2 by bolts. The top of the cross positioning tool 1 is fixedly connected to the fixed seat 45. The fixed seat 45 is slidably connected to the connecting block 46. The other end of the connecting block 46 is fixedly connected to the positioning module 3. The fixed seat 45 has a slide groove 47. The slide plate 48 is slidably connected to the slide groove 47. The top of the slide plate 48 is fixedly connected to the slide rod 410. The slide rod 410 is slidably connected to the fixed seat 45. The surface of the slide rod 410 in the slide groove 47 is wound with a spring 49. The two sides of the slide rod 410 are symmetrically fixedly connected to the insert block 411. The insert block 411 is slidably connected to the connecting block 46 and passes through the connecting block 46.

[0028] In use, first place the workbench 2 in the designated working position of the CNC measuring equipment, align the positioning groove 55 of the cross positioning tool 1 with the positioning rod 56 of the workbench 2 and slide it into contact. Then fix the cross positioning tool 1 to the workbench 2 with bolts to complete the setting of the overall reference of the tool. Select the corresponding positioning module 3 according to the shape of the workpiece to be measured. The operator pulls the pull ring at the top of the slide rod 410 upwards. The slide rod 410 drives the slide plate 48 to move upwards in the slide groove 47 of the fixed seat 45. At the same time, the spring 49 is compressed. The inserts 411 on both sides of the slide rod 410 move upwards and disengage from the through hole of the connecting block 46. Align the slider 42 connected to the positioning module 3 with the slide rail 41 of the cross positioning tool 1 and slide it in. At the same time, the positioning block 43 of the positioning module 3 is inserted into the slot 44 of the cross positioning tool 1 to complete the initial positioning of the module. Release the pull ring, the spring 49 returns to its original position and pushes the slide rod 410 downwards. The inserts 411 are reinserted into the through hole of the connecting block 46 to achieve stable locking of the positioning module 3. The insert 411 has a rectangular design, and the connecting block 46 has a through hole that matches the insert 411. This reduces the gap between the slide plate 48 and the slide groove 47, providing sufficient sliding stroke for the slide plate 48 while preventing excessive gap from causing the slide plate 48 to wobble. This ensures the accuracy of the movement of the slide rod 410 driving the insert 411. A pull ring is fixedly connected to the top of the slide rod 410, and the surface of the pull ring is provided with anti-slip texture, making it easy for operators to hook and pull with their fingers or tools, thus improving the ease of operation. At the same time, it is integrally molded or polished after welding to prevent sharp burrs from appearing at the connection between the pull ring and the slide rod 410, thus preventing hand injuries during operation.

[0029] Example 2:

[0030] Reference Figures 1 to 2 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the cross positioning tool 1 is provided with a clamping component 5 for clamping the workpiece. The clamping component 5 includes guide grooves 51 that are equidistantly opened at the four corners of the worktable 2. A guide block 52 is slidably connected in the guide groove 51. A clamping block 53 is fixedly connected to the top of the guide block 52. A threaded rod 54 is threadedly connected in the worktable 2. The other end of the threaded rod 54 is rotatably connected to the guide block 52.

[0031] In use, place the workpiece to be measured in the center area of ​​the cross positioning tool 1, so that the surface of the workpiece is in contact with the locked positioning module 3. Rotate the threaded rods 54 at the four corners of the worktable 2. The threaded rods 54 are driven by the internal threads of the worktable 2, which drive the guide block 52 to slide along the guide groove 51. The clamping block 53 on the top of the guide block 52 moves synchronously with the guide block 52 until the soft pad of the clamping block 53 is in close contact with the surface of the workpiece. At this time, the workpiece positioning is completed, and the CNC measuring equipment can start the measurement operation. A soft pad is fixedly connected to the side of the clamping block 53 facing the positioning module 3, and the area of ​​the soft pad is equal to the clamping area of ​​the clamping block 53. The soft pad is made of nitrile rubber or silicone, with moderate hardness, which can ensure the friction during clamping and avoid scratches and indentations on the workpiece surface caused by rigid clamping. It is especially suitable for fragile workpieces such as thin-walled parts and precision parts, and can play a certain buffering role to reduce workpiece deformation caused by excessive clamping force. Four sets of positioning grooves 55 are equally spaced inside the cross positioning tool 1. A positioning rod 56 is fixedly connected to the surface of the worktable 2 in the positioning groove 55. The positioning groove 55 and the positioning rod 56 are slidably connected. The four sets of positioning grooves 55 are symmetrically distributed in the center, which can ensure that when the cross positioning tool 1 is installed on the worktable 2, the central reference is aligned with the reference of the worktable 2, avoiding the decrease in positioning accuracy due to installation offset, and aligning the threaded holes, so that the operator can install the cross positioning tool 1 on the worktable 2 by using bolts.

[0032] The remaining structure is the same as that in Example 1.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An assembly positioning auxiliary tool for CNC measuring equipment, characterized in that, The tool includes a cross-shaped positioning tool (1), a worktable (2) is provided at the bottom of the cross-shaped positioning tool (1), and positioning modules (3) are provided at the four right angles of the cross-shaped positioning tool (1). The positioning modules (3) are respectively designed in an arc shape, a V shape and an L shape. A locking component (4) is provided between the positioning module (3) and the cross-shaped positioning tool (1). The locking component (4) includes two sets of slide rails (41) symmetrically opened on the outer walls of the front and rear ends of the cross positioning tool (1). A slider (42) is slidably connected inside the slide rail (41). The outer end of the slider (42) is fixedly connected to the positioning module (3). A positioning block (43) is fixedly connected to the inner wall of the positioning module (3).

2. The assembly positioning auxiliary tool for CNC measuring equipment according to claim 1, characterized in that, The outer wall of the positioning block (43) corresponds to the outer wall of the cross positioning tool (1), which has a slot (44). The positioning block (43) is slidably connected to the slot (44). The cross positioning tool (1) is connected to the workbench (2) by bolts. A fixed seat (45) is fixedly connected to the top of the cross positioning tool (1). A connecting block (46) is slidably connected inside the fixed seat (45). The other end of the connecting block (46) is fixedly connected to the positioning module (3). The fixed seat (45) has a slot (44) on its outer wall. A sliding groove (47) is provided, and a sliding plate (48) is slidably connected in the sliding groove (47). A sliding rod (410) is fixedly connected to the top of the sliding plate (48). The sliding rod (410) is slidably connected to the fixed seat (45). A spring (49) is wound around the surface of the sliding rod (410) in the sliding groove (47). Insert blocks (411) are symmetrically fixedly connected to both sides of the sliding rod (410). The insert blocks (411) are slidably connected to the connecting block (46) and pass through the connecting block (46).

3. The assembly positioning auxiliary tool for CNC measuring equipment according to claim 2, characterized in that, The insert (411) is rectangular in shape, and the connecting block (46) has a through hole that is compatible with the insert (411).

4. The assembly positioning auxiliary tool for CNC measuring equipment according to claim 2, characterized in that, The top of the slide bar (410) is fixedly connected to a pull ring, and the surface of the pull ring is provided with anti-slip texture.

5. The assembly positioning auxiliary tool for CNC measuring equipment according to claim 1, characterized in that, The cross positioning tool (1) is provided with a clamping assembly (5) for clamping the workpiece. The clamping assembly (5) includes guide grooves (51) equidistantly opened at the four corners of the worktable (2). A guide block (52) is slidably connected in the guide groove (51). A clamping block (53) is fixedly connected to the top of the guide block (52). A threaded rod (54) is threadedly connected in the worktable (2). The other end of the threaded rod (54) is rotatably connected to the guide block (52).

6. The assembly positioning auxiliary tool for CNC measuring equipment according to claim 5, characterized in that, The clamping block (53) is fixedly connected to a soft pad on the side facing the positioning module (3), and the area of ​​the soft pad is equal to the clamping area of ​​the clamping block (53).

7. The assembly positioning auxiliary tool for CNC measuring equipment according to claim 5, characterized in that, The cross-shaped positioning tool (1) has four sets of positioning slots (55) equidistantly arranged inside. A positioning rod (56) is fixedly connected to the surface of the worktable (2) in the positioning slot (55). The positioning slot (55) and the positioning rod (56) are slidably connected.

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