Numerical control machine tool Z-axis geometric accuracy test equipment

Abstract

The utility model provides a numerical control machine tool Z-axis geometric accuracy testing device, relates to the technical field of testing devices, and solves the technical problem that in the prior art, after a machine tool Z-axis is preassembled, the geometric accuracy of the machine tool Z-axis cannot be effectively detected, so that the assembling efficiency is low. The numerical control machine tool Z-axis geometric accuracy testing equipment comprises a base and a fixed seat arranged above the base, a positioning structure used for positioning a detection block is arranged on the base, a Z axis is arranged on the fixed seat, a measuring instrument is arranged on a main shaft of the Z axis, and the main shaft of the Z axis can move on the fixed seat in a reciprocating mode in the mode of being far away from or close to the base. And the straightness of the Z-axis main shaft in the moving process is measured through a measuring instrument. The Z-axis geometric accuracy testing equipment for the numerical control machine tool can complete testing in the preassembling stage so as to improve the installation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a Z-axis geometric accuracy testing device for a numerically controlled machine tool. Background Art

[0002] At present, in mature CNC machine tool manufacturing factories, the assembly process of machine tools is relatively mature. The entire assembly manufacturing process is roughly divided into two parts: component pre-assembly and machine tool final assembly. Among them, the Z axis of the machine tool is directly sent to the final assembly area for final assembly after the pre-assembly in the pre-assembly area.

[0003] After the final assembly is completed, the machine tool Z-axis geometric accuracy is tested. During the test, it is found that the geometric accuracy deviation of some Z-axis is large. At this time, the entire Z-axis needs to be disassembled and sent to the pre-installation area for inspection. In this way, the geometric deviation problem easily leads to repeated disassembly and assembly, which greatly affects the assembly progress of the entire machine tool. Utility Model Content

[0004] The purpose of the utility model is to provide a CNC machine tool Z-axis geometric accuracy testing device to solve the technical problem that the Z-axis of the machine tool cannot be effectively tested after pre-installation, which easily leads to low assembly efficiency. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a CNC machine tool Z-axis geometric accuracy testing device, comprising a base and a fixed base arranged above the base, a positioning structure for positioning a detection block is arranged on the base, the Z-axis is arranged on the fixed base, a measuring instrument is arranged on the spindle of the Z-axis, and the spindle of the Z-axis can reciprocate on the fixed base in a manner of moving away from or approaching the base, so as to measure the straightness of the Z-axis spindle during the movement by the measuring instrument.

[0007] As a preferred embodiment of the utility model, the fixed seat includes a crossbeam, the crossbeam is arranged on the base through a column, a guide rail is arranged on the crossbeam, a slider is arranged on the guide rail, the slider cooperates with the guide rail, and the Z axis is arranged on the slider.

[0008] As a preferred embodiment of the utility model, a transition plate is provided on the sliding block, and a mounting hole adapted to the Z axis is provided on the transition plate.

[0009] As a preferred embodiment of the utility model, it further comprises a frame, wherein the frame is connected to the column, a ladder is arranged on one side of the frame, and a handrail is arranged on one side of the ladder.

[0010] As a preferred embodiment of the utility model, a working platform is arranged above the frame, and a guardrail is arranged around the working platform.

[0011] As a preferred embodiment of the utility model, the positioning structure includes a positioning seat, a fixed block and a movable block, the positioning seat is fixed on the base, the movable block is an L-shaped structure, a waist-shaped hole is provided on the movable block, a bolt passes through the waist-shaped hole and is threadedly connected to the positioning seat to position the detection block between the movable block and the fixed block.

[0012] As a preferred embodiment of the utility model, a leveling structure is provided at the bottom of the base, and the leveling structure includes adjustment plates arranged at the four corners of the base, and the adjustment plates are provided with adjustment holes, and the adjustment bolts are threadedly connected in the adjustment holes and extend to the bottom of the adjustment plates.

[0013] As a preferred embodiment of the utility model, it also includes a foot pedal, which is arranged on the front side of the base.

[0014] As a preferred embodiment of the present invention, a protective fence is arranged on the periphery of the base.

[0015] As a preferred embodiment of the present invention, the detection block is a standard measuring block made of marble.

[0016] The beneficial effects of the utility model are as follows: the Z-axis geometric accuracy testing device for numerically controlled machine tools provided by the utility model comprises a base and a fixed base, a positioning structure for a positioning detection block is arranged on the base, the Z-axis is fixed on the fixed base, the main axis of the Z-axis can move toward or away from the base, when the main axis of the Z-axis is moving, by reciprocating the micrometer arranged on the main axis at different positions on the detection block, the straightness of the movement of the Z-axis in a vertical plane can be obtained, thereby obtaining a fast and accurate test of the geometric accuracy of the Z-axis; at the same time, the Z-axis geometric accuracy testing device for numerically controlled machine tools can solve the problem of poor geometric accuracy of the Z-axis of the machine tool when the machine tool is pre-assembled, thereby shortening the working hours of the machine tool assembly and manufacturing process and improving the assembly and manufacturing efficiency; in addition, the Z-axis geometric accuracy testing device for numerically controlled machine tools has a simple structure, is easy to install and disassemble, and greatly improves the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0019] Figure 2 It is a schematic diagram of the frame structure of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the base of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the positioning structure of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the column of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the transition plate of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the detection block of the utility model.

[0025] In the figure:

[0026] 100. Base;

[0027] 200, fixed seat;

[0028] 300, detection block;

[0029] 400, positioning structure;

[0030] 500, frame;

[0031] 600, foot pedal;

[0032] 110. Leveling structure;

[0033] 111. Adjustment plate;

[0034] 112. Adjustment hole;

[0035] 113. Expansion screw installation hole;

[0036] 210, beam;

[0037] 211, guide rail;

[0038] 212, Slider;

[0039] 213, transition plate;

[0040] 220, pillar;

[0041] 410, fixed block;

[0042] 420, activity block;

[0043] 430, positioning seat;

[0044] 421, waist-shaped hole;

[0045] 510. Ladder;

[0046] 520. Work platform. DETAILED DESCRIPTION

[0047] Please refer to the attached figure below Figure 1 to Figure 7 And the text content understands the content of the utility model and the difference between the utility model and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the utility model by means of the accompanying drawings and the enumeration of some optional embodiments of the utility model. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the utility model in this document, and it is not convenient for the implementation of each technical feature to emphasize that it is one of the optional multiple implementations, so those skilled in the art should know that: any technical means provided by the utility model can be replaced or any two or more technical means or technical features provided by the utility model can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in this embodiment do not limit the scope of protection of the utility model. The scope of protection of the utility model should include any alternative technical solutions that can be thought of by those skilled in the art without creative labor and new technical solutions obtained by combining any two or more technical means or technical features provided by the utility model.

[0048] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it is also necessary to explain that, 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0050] The utility model provides a CNC machine tool Z-axis geometric accuracy testing device which can complete the test in the pre-installation stage to improve the installation efficiency.

[0051] Combine the following Figure 1 to Figure 7 The technical solution provided by the utility model is described in more detail.

[0052] The utility model provides a Z-axis geometric accuracy testing device for a numerically controlled machine tool, comprising a base 100 and a fixed base 200 arranged above the base 100, the Z-axis is arranged on the fixed base 200, and the main axis of the Z-axis can reciprocate on the fixed base 200 in a manner of moving away from or approaching the base 100, and a positioning structure 400 for positioning a detection block 300 is arranged on the base 100.

[0053] The utility model provides a CNC machine tool Z-axis geometric accuracy testing device, comprising a base 100 and a fixed base 200, a positioning structure 400 for positioning a detection block 300 is arranged on the base 100, the Z-axis is fixed on the fixed base 200, the main axis of the Z-axis can move toward or away from the base 100, when the main axis of the Z-axis is moving, by reciprocating the micrometer arranged on the main axis at different positions on the detection block 300, the straightness of the movement of the Z-axis in a vertical plane can be obtained, thereby obtaining a fast and accurate test of the geometric accuracy of the Z-axis; at the same time, the CNC machine tool Z-axis geometric accuracy testing device can solve the problem of poor geometric accuracy of the machine tool Z-axis when the machine tool is pre-assembled, thereby shortening the machine tool assembly manufacturing process time and improving the assembly manufacturing efficiency; in addition, the CNC machine tool Z-axis geometric accuracy testing device has a simple structure, is easy to install and disassemble, and greatly improves the work efficiency.

[0054] Furthermore, the fixing seat 200 includes a crossbeam 210 , which is disposed on the base 100 via a column 220 , a guide rail 211 is disposed on the crossbeam 210 , a slider 212 is disposed on the guide rail 211 , and the Z axis is disposed on the slider 212 .

[0055] In this further improved solution, a guide rail 211 is provided on the crossbeam 210 , a slider 212 is provided on the guide rail 211 , the slider 212 cooperates with the guide rail 211 , the Z axis is provided on the slider 212 , and the position of the Z axis can be adjusted by the slider 212 and the guide rail 211 .

[0056] Preferably, two guide rails 211 are provided, and the two guide rails 211 are arranged in parallel. Two groups of sliders 212 are respectively matched with the two groups of guide rails 211. By providing mounting holes adapted to the Z axis on the two groups of sliders 212, the Z axis can be directly connected to the sliders 212.

[0057] Due to the certainty of the installation of the guide rail 211 on the beam 210, the installation hole spacing of the upper and lower sliders 212 is already a fixed value after the guide rail 211 is installed, so the matching Z-axis slide plate is already determined, and the hole spacing must be consistent with the hole spacing of the slider 212 of the beam 210.

[0058] Furthermore, a leveling structure 110 is disposed at the bottom of the base 100 .

[0059] A leveling structure 110 is provided at the bottom of the base 100, and the leveling structure 110 is used to adjust the level of the base 100 to ensure that the detection block 300 provided on the base 100 is placed on a good horizontal plane. The crossbeam 210 is provided on the base 100 through the column 220. The levelness of the base 100 affects the levelness of the fixing base 200. By ensuring the levelness of the base 100, the levelness or verticality of the Z-axis provided on the fixing base 200 can be adjusted to ensure the smooth progress of the test and the effective guarantee of the test accuracy.

[0060] Specifically, the leveling structure 110 includes adjustment plates 111 disposed at four corners of the base 100 . The adjustment plates 111 are provided with adjustment holes 112 . Adjustment bolts are threadedly connected in the adjustment holes 112 and extend toward the bottom of the adjustment plates 111 .

[0061] In this specific embodiment, by setting adjustment plates 111 at the four corners of the base 100, by setting adjustment holes 112 on the adjustment plates 111, and by threading adjustment bolts with the adjustment holes 112, the levelness of the base 100 can be adjusted by the adjustment bolts.

[0062] Preferably, an expansion screw installation hole 113 is further provided on the adjustment plate 111, and an expansion screw kit is preset on the ground. The expansion screw passes through the expansion screw installation hole 113 and is connected to the expansion screw kit to fix the base 100 on the ground.

[0063] During installation, place the base 100 on the ground to be installed, connect the expansion screw installation hole 113 with the expansion screw kit, and use the expansion screw to connect on the ground, which can also play a certain shock-absorbing role; the adjusting bolt is threadedly connected with the adjusting hole 112, and two spirit levels are placed horizontally and vertically in the center of the plane on the base 100. The horizontality of the front and back and left and right of the base 100 can be observed respectively. According to the reading of the spirit level, it is determined which corner of the base 100 is the highest. With the highest point as the reference, the heights of the other three corners of the base 100 are adjusted by adjusting the bolts, and the reading of the spirit level is observed until the base 100 reaches a horizontal state.

[0064] It can be understood that the Z-axis is fixed on the slider 212 , and the Z-axis is fixed on the slider 212 by setting a mounting hole compatible with the Z-axis on the slider 212 , thereby ensuring that the Z-axis is connected to the fixed seat 200 , and the Z-axis can slide on the guide rail 211 .

[0065] Preferably, a transition plate 213 is provided on the sliding block 212 , and a mounting hole adapted to the Z axis is provided on the transition plate 213 .

[0066] In this further improved scheme, a transition plate 213 is set on the slider 212, a mounting hole compatible with the Z-axis is set on the transition plate 213, the transition plate 213 is connected to the slider 212, and the mounting holes required for different Z-axes can be set on the transition plate 213, so that the CNC machine tool Z-axis geometric accuracy test equipment provided by the utility model can test multiple Z axes and has stronger compatibility.

[0067] Specifically, four bosses are provided on the transition plate 213, and the mounting holes required for the Z-axis are provided on the bosses. When replacing a Z-axis of a different model, the transition plate 213 is first installed on the beam 210 and fixed firmly, and then the Z-axis is fixed to the transition plate 213 to complete the detection of different Z-axis assembly accuracies to ensure that the detection of different Z-axis assembly accuracies is met.

[0068] It is understandable that in some other embodiments, different mounting holes required for the Z-axis may be provided on the slider 212 to meet various Z-axis geometric accuracy testing requirements.

[0069] In some other embodiments of the present invention, the CNC machine tool Z-axis geometric accuracy testing device further includes a frame 500, the frame 500 is connected to the column 220, a ladder 510 is provided on one side of the frame 500, and a handrail is provided on one side of the ladder 510. A working platform 520 is provided above the frame 500, and a guardrail is provided around the working platform 520.

[0070] By setting up the frame 500, a ladder 510 is set on the frame 500. The ladder 510 is convenient for the staff to install and fix the Z axis on the slider 212 or the transition plate 213, and it is convenient to assemble the Z axis spindle motor and connecting lines, thereby ensuring the safety of the staff and improving work efficiency.

[0071] Furthermore, a foot pedal 600 is provided on the front side of the base 100 to facilitate workers to get on and off when using the equipment.

[0072] Furthermore, the positioning structure 400 includes a positioning seat 430, a fixed block 410 and a movable block 420, the positioning seat 430 is fixed on the base 100, the movable block 420 is an L-shaped structure, and a waist-shaped hole 421 is provided on the movable block 420. The bolt passes through the waist-shaped hole 421 and is threadedly connected to the positioning seat 430 to position the detection block 300 between the movable block 420 and the fixed block 410.

[0073] In this further improvement, the positioning structure 400 includes a positioning seat 430, a fixed block 410 and a movable block 420. The positioning seat 430 is fixed on the base 100, and the movable block 420 is connected to the positioning seat 430 by bolts. The detection block 300 is positioned between the movable block 420 and the fixed block 410. The movable block 420 is an L-shaped structure, and a waist-shaped hole 421 is provided on the movable block 420, which can effectively clamp the detection block 300, has good stability, an adjustable clamping range, and strong practicality.

[0074] Since the base 100 is in a horizontal state, the detection block 300 is arranged on the base 100, and the detection block 300 is also in a horizontal state. During the detection, the Z axis is set to the manual mode, and the micrometer on the Z axis is adjusted so that the head of the micrometer sequentially contacts the upper and lower points on the side of the detection block 300. By determining the reference values ​​of the upper and lower points, the spindle of the Z axis drives the micrometer to move back and forth, and according to the value change of the micrometer, it is used to detect whether the geometric accuracy of the Z axis meets the requirements.

[0075] Preferably, the detection block 300 is a standard measuring block made of marble, and the material of the column 220 and the beam 210 is also marble, which has good rigidity and strong stability, ensuring high precision. The column 220 is made of marble, and the countersink is pre-processed during the manufacturing process, and finally the brace is embedded in the countersink to obtain a threaded hole.

[0076] Furthermore, a protective fence is provided on the periphery of the base 100. The protective fence is used to isolate the operation area for safety protection.

[0077] The detection method of the Z-axis geometric accuracy testing device of the CNC machine tool provided by the utility model is as follows:

[0078] S1: Place the detection block 300 on the positioning structure 400, and lock it through the fixed block 410 and the movable block 420, and install the micrometer on the Z-axis spindle;

[0079] S2: Adjust the Z-axis spindle to the manual mode, and adjust the dial gauge so that the dial gauge head touches the first position A of the detection block 300;

[0080] S3: Fine-tune the dial indicator, move the Z axis to the second position B, and adjust the detection block so that the reading of the dial indicator at the second position B is consistent with the reading at the first position A. The value at this time is recorded as the reference value;

[0081] S4: Move the Z axis back and forth between the first position A and the second position B at least twice, and record the maximum and minimum values ​​of the deviation from the reference value during the movement. The difference between the maximum and minimum values ​​is the straightness of the Z axis moving in the ZX vertical plane.

[0082] The first position A and the second position B are preferably two points 5mm and 5mm away from the upper end and lower end of the detection block. Since the main axis of the Z axis moves up and down, due to assembly errors, the movement process fluctuates in a curve. If the fluctuation is too large, the accuracy will change and the assembly accuracy will be unqualified. The purpose of linear detection is to detect the fluctuation of this up and down movement.

[0083] It can be understood that when the Z axis passes through the first position point A, the pointer of the micrometer rotates to 0, and then the Z axis continues to move downward. When passing the second position point B, the pointer of the micrometer rotates back to 0 (not 360°), the straightness of the two points is corrected relative to the adjusted marble, and then the marble is fixed. The fluctuation range of the micrometer from the first position point A to the second position point B is the fluctuation range of the up and down movement of the Z axis, which is to detect the linearity of the Z axis.

[0084] The method for handling unqualified detection after detection by the Z-axis geometric accuracy testing device of the CNC machine tool provided by the utility model is as follows:

[0085] First, re-measure the readings of the first position A and the second position B of the Z axis to see if they are consistent. If there is any inconsistency, re-calibrate and re-measure.

[0086] Secondly, when the detection method is correct and the detection results still deviate greatly from the technical requirements, the Z-axis needs to be disassembled to re-test whether the Z-axis guide rail installation and screw rod installation accuracy meet the technical requirements, and whether the component processing accuracy meets the requirements.

[0087] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0088] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A CNC machine tool Z-axis geometric accuracy testing device, characterized in that: It includes a base and a fixed base arranged above the base, a positioning structure for positioning a detection block is arranged on the base, a Z-axis is arranged on the fixed base, a measuring instrument is arranged on the spindle of the Z-axis, and the spindle of the Z-axis can reciprocate on the fixed base in a manner of moving away from or approaching the base, so as to measure the straightness of the spindle of the Z-axis during the movement by the measuring instrument.

2. The CNC machine tool Z-axis geometric accuracy testing device according to claim 1, characterized in that: The fixing seat comprises a crossbeam, the crossbeam is arranged on the base through a column, a guide rail is arranged on the crossbeam, a slider is arranged on the guide rail, the slider cooperates with the guide rail, and the Z axis is arranged on the slider.

3. The CNC machine tool Z-axis geometric accuracy testing device according to claim 2, characterized in that: A transition plate is provided on the sliding block, and a mounting hole adapted to the Z axis is provided on the transition plate.

4. The CNC machine tool Z-axis geometric accuracy testing device according to claim 2, characterized in that: It also includes a frame, which is connected to the column, a ladder is arranged on one side of the frame, and a handrail is arranged on one side of the ladder.

5. The CNC machine tool Z-axis geometric accuracy testing device according to claim 4, characterized in that: A working platform is arranged above the frame, and guardrails are arranged around the working platform.

6. The CNC machine tool Z-axis geometric accuracy testing device according to any one of claims 1 to 5, characterized in that: The positioning structure includes a positioning seat, a fixed block and a movable block. The positioning seat is fixed on the base. The movable block is an L-shaped structure. A waist-shaped hole is provided on the movable block. A bolt passes through the waist-shaped hole and is threadedly connected to the positioning seat to position the detection block between the movable block and the fixed block.

7. The CNC machine tool Z-axis geometric accuracy testing device according to any one of claims 1 to 5, characterized in that: The bottom of the base is provided with a leveling structure, which includes adjustment plates arranged at the four corners of the base, the adjustment plates are provided with adjustment holes, and adjustment bolts are threadedly connected in the adjustment holes and extend to the bottom of the adjustment plates.

8. The CNC machine tool Z-axis geometric accuracy testing device according to any one of claims 1 to 5, characterized in that: Also included is a foot pedal disposed on the front side of the base.

9. The CNC machine tool Z-axis geometric accuracy testing device according to any one of claims 1 to 5, characterized in that: A protective fence is arranged on the periphery of the base.

10. The CNC machine tool Z-axis geometric accuracy testing device according to any one of claims 1 to 5, characterized in that: The detection block is a standard measuring block made of marble.

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