Three-coordinate measuring machine with self-balancing structure

Abstract

The utility model discloses a three-coordinate measuring machine with a self-balancing structure, which comprises a base, a workbench is arranged at the top of the base, a first slide rail is arranged on the right side of the workbench, and a support is slidably connected in the first slide rail; sleeves are correspondingly installed at the four corners of the top of the base, sealing columns are connected to the tops of the sleeves in a sealed and sliding mode, the sealing columns are fixed to the four corners of the bottom of the workbench, and every two adjacent sleeves communicate with each other through a communicating pipe. Fixing plates are symmetrically mounted at the top of the workbench, and positioning plates for fixing workpieces are slidably connected to the fixing plates at equal intervals in a penetrating mode. When the three-coordinate measuring machine with the self-balancing structure is used, the whole measuring machine can be leveled, so that the measuring machine is in a balanced state, follow-up measuring work is facilitated, the positioning structure can be adaptively adjusted to adapt to the appearance of a workpiece, and therefore the stability of the position of the workpiece during measuring is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of three-coordinate measuring machines, in particular to a three-coordinate measuring machine with a self-balancing structure. Background Art

[0002] Three-dimensional coordinate measuring machine is widely used in machinery, electronics, instrumentation, plastics and other industries. Three-dimensional coordinate measuring machine is one of the most effective methods to measure and obtain dimensional data, because it can replace a variety of surface measurement tools and expensive combination gauges, and reduce the time required for complex measurement tasks from hours to minutes, which is an effect that other instruments cannot achieve. The function of three-dimensional coordinate measuring machine is to quickly and accurately evaluate dimensional data and provide operators with useful information about the status of the production process. This is very different from all manual measurement equipment. The object to be measured is placed in the three-dimensional measurement space, and the coordinate position of each measuring point on the object to be measured can be obtained. According to the spatial coordinate values ​​of these points, the geometric size, shape and position of the object to be measured can be calculated;

[0003] A manual or floating coordinate measuring machine disclosed in publication number CN1158983A is provided with a probe so as to move along three rectangular coordinate axes X, Y and Z, a Z-axis member provided with the probe is moved along the three coordinate axes by manual operation, and the size and shape of a workpiece are determined by the displacement range of the three coordinate axes when the probe is in contact with the workpiece;

[0004] However, the above scheme still has the following problems during use: when in use, the measuring machine directly measures the workpiece on the workbench through the probe, and the measuring machine should be in a balanced position before measuring. Furthermore, the three-dimensional coordinate measuring machine itself needs to be leveled when placed, and the measurement can be carried out after ensuring that the workbench is in a horizontal position. In addition, for the workpiece to be measured, the position should be ensured to be stable before measurement, and the single clamping contact area is small and the stability is weak.

[0005] Therefore, we proposed a three-coordinate measuring machine with a self-balancing structure to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a three-coordinate measuring machine with a self-balancing structure to solve the problems of the three-coordinate measuring machines currently available on the market raised in the above background technology. When in use, the measuring machine directly measures the workpiece on the workbench through a probe, and the measuring machine should be in a balanced position before measuring. Furthermore, the three-coordinate measuring machine itself needs to be leveled when placed, and the measurement can be carried out after ensuring that the workbench is in a horizontal position. Moreover, for the workpiece to be measured, the position should be ensured to be stable before measurement is carried out, and the single clamping contact area is small and the stability is weak.

[0007] To achieve the above object, the utility model provides the following technical solution: a three-dimensional coordinate measuring machine with a self-balancing structure, comprising a base, a workbench is arranged on the top of the base, a first slide rail is arranged on the right side of the workbench, a bracket is slidably connected in the first slide rail, a second slide rail is installed on the top of the bracket, and a bearing frame is slidably connected in the second slide rail;

[0008] A telescopic rod is provided at the bottom of the carrier frame, a mounting plate is fixed at the bottom of the carrier frame, and a detection head is connected to the bottom of the mounting plate;

[0009] It also includes: sleeves are correspondingly installed at the four corners of the top of the base, and the top of the sleeve is sealingly slidably connected with a sealing column, and the sealing column is fixed at the four corners of the bottom of the workbench, and adjacent sleeves are connected through connecting pipes;

[0010] A fixing plate is symmetrically mounted on the top of the workbench, and a positioning plate for fixing the workpiece is slidably connected and penetrated through the fixing plate at equal intervals.

[0011] Preferably, the sleeve and the sealing column are arranged in a one-to-one correspondence, and oil is injected into the sealed space formed by the sleeve and the sealing column, and the oil flows between the connecting pipe and the sleeve.

[0012] Preferably, a valve is installed in the middle of the connecting pipe, and the workbench forms a self-balancing structure through the sleeve, the sealing column and the connecting pipe.

[0013] Preferably, a detection head is plugged into the bottom of the mounting plate, and fixing pins are symmetrically penetrated and connected on both sides of the mounting plate, and a first spring is installed between the fixing pins and the mounting plate.

[0014] Preferably, the end of the fixing pin is engaged with the slot, and the slots are correspondingly opened on both sides of the top of the detection head, and the detection head forms a convenient installation structure through the fixing pin and the slot.

[0015] Preferably, the sliding parts of the fixing plate and the positioning plate are configured as rectangular structures, and the positioning plate is provided with through holes at equal intervals, and locking frames are inserted into the through holes, and the locking frames penetrate and slide to be connected to the top of the fixing plate.

[0016] Preferably, the locking frame is configured as a comb-shaped structure, and a second spring is installed between the locking frame and the fixing plate.

[0017] Compared with the prior art, the three-coordinate measuring machine with a self-balancing structure of the utility model has the following beneficial effects: when in use, the measuring machine can be leveled as a whole, so that the measuring machine is in a balanced state, which is convenient for subsequent measurement work, and the positioning structure can be adaptively adjusted to adapt to the shape of the workpiece, thereby maintaining the stability of the workpiece position during measurement. The specific contents are as follows:

[0018] 1. The setting of sleeve, sealing column and connecting pipe makes it easy to automatically level the measuring machine when the ground is uneven, so as to keep the working table of the measuring machine in a balanced state when it is in use;

[0019] Further, the valve in the middle of the connecting pipe is opened, and then the oil will flow in the adjacent sleeves. When the ground is uneven, the oil will flow due to gravity, causing the sealing column to slide. When the bubble in the level gauge on the front side of the workbench is in a balanced position, the measuring machine will find the balanced position, and then close the valve to fix the balanced state.

[0020] 2. By setting the positioning plate and the locking frame, the positioning plate can be adaptively adjusted according to the shape of the workpiece, thereby maintaining a stable contact area and preventing the workpiece from moving;

[0021] Further, the locking frame is pulled to compress the second spring, so that the locking frame is separated from the through hole at the initial position, and then the positioning plate can be pushed to slide on the fixing plate, so that the positioning plate fits the outside of the workpiece to increase the contact area, and then the locking frame is released, and the second spring will drive it to reset, so as to engage with the through hole at the corresponding position of the positioning plate, thereby fixing the positioned state;

[0022] 3. Through the setting of the fixing pin and the slot, when the detection head is damaged and needs to be replaced, pull the fixing pins on both sides of the mounting plate to compress the first spring, and the fixing pin will be separated from the slot, and then the detection head can be separated from the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the balancing mechanism of the utility model;

[0025] Figure 3 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 4 This is a schematic diagram of the structure of the connection between the mounting plate and the detection head of the utility model;

[0027] Figure 5 This is a schematic diagram of the top view of the structure of the fixed plate, the positioning plate and the locking frame of the utility model;

[0028] Figure 6 This is a schematic diagram of the front cross-section structure of the connection between the fixing plate, the positioning plate and the locking frame of the utility model;

[0029] Figure 7For this utility model Figure 6 Enlarged structural diagram at B in the middle.

[0030] In the figure: 1. base; 2. workbench; 3. first slide rail; 4. bracket; 5. second slide rail; 6. load-bearing frame; 7. telescopic rod; 8. mounting plate; 9. detection head; 10. fixing pin; 11. first spring; 12. slot; 13. sleeve; 14. sealing column; 15. connecting pipe; 16. valve; 17. fixing plate; 18. positioning plate; 19. through hole; 20. locking frame; 21. second spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Embodiment 1: In order to maintain the overall balance of the measuring machine, facilitate the subsequent measurement work, and avoid the problem of the measuring machine being placed unsteadily and affecting the measurement results, the following solution is proposed. Please refer to Figure 1-Figure 2 As shown,

[0033] It includes a base 1, and a workbench 2 is arranged on the top of the base 1, and a first slide rail 3 is arranged on the right side of the workbench 2, and a bracket 4 is slidably connected in the first slide rail 3, and a second slide rail 5 is installed on the top of the bracket 4, and a bearing frame 6 is slidably connected in the second slide rail 5, and a telescopic rod 7 is arranged at the bottom of the bearing frame 6, and a mounting plate 8 is fixed at the bottom of the bearing frame 6, and a detection head 9 is connected to the bottom of the mounting plate 8. When in use, the workpiece to be measured is fixed on the top of the workbench 2, and then the bracket 4 moves on the first slide rail 3 for longitudinal adjustment, and the bearing frame 6 moves on the second slide rail 5 for transverse adjustment, and the telescopic rod 7 drives the mounting plate 8 to move vertically, thereby driving the detection head 9 to adjust the vertical position, so as to perform three-coordinate measurement;

[0034] Please refer to Figure 1-Figure 2As shown, sleeves 13 are correspondingly installed at the top four corners of the base 1, and the top of the sleeve 13 is sealingly slidably connected with a sealing column 14, and the sealing column 14 is fixed to the four corners of the bottom of the workbench 2, and the adjacent sleeves 13 are connected through a connecting pipe 15, and the sleeves 13 and the sealing columns 14 are arranged one by one, and the sealed space formed by the sleeves 13 and the sealing columns 14 is injected with oil, and the oil flows between the connecting pipe 15 and the sleeve 13, and a valve 16 is installed in the middle of the connecting pipe 15, and The workbench 2 forms a self-balancing structure through the sleeve 13, the sealing column 14 and the connecting pipe 15. When the measuring machine is placed, the valve 16 in the middle of the connecting pipe 15 is opened, and then the oil will flow in the adjacent sleeves 13. When the ground is uneven, the oil will flow due to gravity, and then the sealing column 14 will slide. When the bubble in the level gauge on the front side of the workbench 2 is in a balanced position, the measuring machine will find the balanced position, and then close the valve 16 to fix the balanced state.

[0035] Embodiment 2: In order to keep the workpiece stable during measurement and avoid work activities affecting the measurement work, the following solution is proposed. Please refer to Figure 1 and Figure 5-Figure 7 As shown,

[0036] A fixing plate 17 is symmetrically installed on the top of the workbench 2, and a positioning plate 18 for fixing the workpiece is slidably connected to the fixing plate 17 at equal intervals. The sliding parts of the fixing plate 17 and the positioning plate 18 are set as a rectangular structure, and through holes 19 are opened at equal intervals on the positioning plate 18, and a locking frame 20 is inserted in the through hole 19, and the locking frame 20 is slidably connected to the top of the fixing plate 17, and the locking frame 20 is set as a comb-shaped structure, and a second spring 21 is installed between the locking frame 20 and the fixing plate 17. When the workpiece on the workbench 2 is positioned and fixed, the locking frame 20 is pulled to compress the second spring 21, so that the locking frame 20 is separated from the through hole 19 at the initial position, and then the positioning plate 18 can be pushed to slide on the fixing plate 17, so that the positioning plate 18 fits the outside of the workpiece to increase the contact area, and then the locking frame 20 is released, and the second spring 21 will drive it to reset, thereby engaging with the through hole 19 at the corresponding position on the positioning plate 18, and then fixing the positioned state.

[0037] Embodiment 3: In order to conveniently replace the detection head 9, the following solution is proposed. For details, please refer to Figure 1 and Figure 3-Figure 4 As shown,

[0038] A detection head 9 is plugged into the bottom of the mounting plate 8, and fixing pins 10 are symmetrically penetrated and connected on both sides of the mounting plate 8, and a first spring 11 is installed between the fixing pin 10 and the mounting plate 8, and the end of the fixing pin 10 is engaged with the card slot 12, and the card slot 12 is correspondingly opened on both sides of the top of the detection head 9, and the detection head 9 forms a convenient installation structure through the fixing pin 10 and the card slot 12. When the detection head 9 is damaged and needs to be replaced, the fixing pins 10 on both sides of the mounting plate 8 are pulled to compress the first spring 11, and the fixing pin 10 will be separated from the card slot 12, and then the detection head 9 can be separated from the mounting plate 8.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-dimensional coordinate measuring machine with a self-balancing structure, comprising a base (1), a workbench (2) is arranged on the top of the base (1), a first slide rail (3) is arranged on the right side of the workbench (2), a bracket (4) is slidably connected to the first slide rail (3), a second slide rail (5) is installed on the top of the bracket (4), and a bearing frame (6) is slidably connected to the second slide rail (5); A telescopic rod (7) is provided at the bottom of the carrier (6), a mounting plate (8) is fixed at the bottom of the carrier (6), a detection head (9) is connected to the bottom of the mounting plate (8), and a level is provided at the front side of the workbench (2); Features: Also includes: Sleeves (13) are correspondingly installed at the four corners of the top of the base (1), and the top of the sleeve (13) is sealingly slidably connected to a sealing column (14), and the sealing column (14) is fixed at the four corners of the bottom of the workbench (2), and adjacent sleeves (13) are connected through connecting pipes (15); A fixing plate (17) is symmetrically mounted on the top of the workbench (2), and positioning plates (18) for fixing the workpiece are slidably connected and penetrate the fixing plate (17) at equal intervals.

2. The three-coordinate measuring machine with a self-balancing structure according to claim 1, characterized in that: The sleeve (13) and the sealing column (14) are arranged in a one-to-one correspondence, and oil is injected into the sealed space formed by the sleeve (13) and the sealing column (14), and the oil flows between the connecting pipe (15) and the sleeve (13).

3. The three-coordinate measuring machine with a self-balancing structure according to claim 2, characterized in that: A valve (16) is installed in the middle of the connecting pipe (15), and the workbench (2) forms a self-balancing structure through the sleeve (13), the sealing column (14) and the connecting pipe (15).

4. The three-coordinate measuring machine with a self-balancing structure according to claim 1, characterized in that: A detection head (9) is inserted into the bottom of the mounting plate (8), and fixing pins (10) are symmetrically connected through both sides of the mounting plate (8), and a first spring (11) is installed between the fixing pins (10) and the mounting plate (8).

5. The three-coordinate measuring machine with a self-balancing structure according to claim 4, characterized in that: The end of the fixing pin (10) is engaged with the card slot (12), and the card slot (12) is correspondingly opened on both sides of the top of the detection head (9), and the detection head (9) forms a convenient installation structure through the fixing pin (10) and the card slot (12).

6. The three-coordinate measuring machine with a self-balancing structure according to claim 1, characterized in that: The sliding parts of the fixing plate (17) and the positioning plate (18) are arranged in a rectangular structure, and the positioning plate (18) is provided with through holes (19) at equal intervals, and a locking frame (20) is inserted into the through hole (19), and the locking frame (20) penetrates and is slidably connected to the top of the fixing plate (17).

7. The three-coordinate measuring machine with a self-balancing structure according to claim 6, characterized in that: The locking frame (20) is configured as a comb-shaped structure, and a second spring (21) is installed between the locking frame (20) and the fixing plate (17).

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