Machine tool linear rail screw straightness and parallelism inspection jig

Abstract

The utility model provides a machine tool linear rail screw straightness and parallelism inspection jig, which relates to the technical field of machine tool processing and comprises a base, the top of the surface of the base is connected with a moving seat, and the surfaces of the two sides of the moving seat are connected with lifting appliances. According to the utility model, after the jig main body is locked, the gradienter main body is placed everywhere, one gradienter main body is transversely placed, the other two gradienter main bodies are laterally placed, the transverse gradienter main body is used for testing the parallelism of two bases, and the lateral gradienter main bodies are used for testing the levelness. The flatness and the parallelism between the position where the lower surface of the jig body is locked with the sliding block and the position where the gradienter body is placed on the upper surface of the jig body are required to be high and are basically within one, the position of bubbles of the gradienter body is observed by pushing the jig forwards and backwards, and the parallelism and the flatness of the linear guide rail are qualified by adjusting ground feet of a base. The problem of parallelism leveling of the two bases of the large-span machine tool is solved.

Description

A fixture for inspecting the straightness and parallelism of machine tool linear guide screws. Technical Field

[0001] This utility model relates to the field of machine tool processing technology, and in particular to a fixture for inspecting the straightness and parallelism of a machine tool linear guide screw. Background Technology

[0002] Machine tool processing refers to the use of machine tools to perform cutting, forming, grinding, and other processing operations on metals or other materials to manufacture parts or products that meet design requirements. Machine tool processing is a fundamental process in modern manufacturing and is widely used in various fields such as machinery, automobiles, aviation, aerospace, electronics, and shipbuilding.

[0003] In the machine tool industry, especially for large equipment like gantry machining centers, the parallelism and flatness of the linear guide screws on the base play a decisive role in the machining accuracy and stability of the machine tool. However, due to the large length and span of the gantry machining center base, leveling presents a significant challenge. Traditional methods, such as using a level, can only check and correct the straightness of a single base, making it difficult to effectively measure and correct the parallelism between two bases; while using precise instruments such as lasers or straightness testers is expensive and incurres high operating costs. Therefore, an efficient and economical solution is needed to overcome the leveling problem of large-span bases. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art where traditional methods, such as using a level, can only check and correct the straightness of a single base, making it difficult to effectively measure and correct the parallelism between two bases; while using precise instruments such as lasers or straightness meters is expensive and has high operating costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fixture for inspecting the straightness and parallelism of a machine tool linear guide screw, comprising a base, a movable seat connected to the top surface of the base, lifting devices connected to both sides of the movable seat, a fixture body connected to the bottom surface of the base, three sets of level bodies equidistantly connected to the surface of the fixture body, and a convenient disassembly component connected to the top center of the movable seat.

[0006] Furthermore, the easy-to-disassemble component includes a fixing frame, and the fixing frame has a first slot on both sides, with a first spring connected inside each of the two sets of first slots.

[0007] Furthermore, a push rod is inserted inside the first spring, and a push plate is connected to the front end of the two sets of push rods. The push plate is used to bear the elastic force of the first spring.

[0008] Furthermore, the rear ends of the two sets of push rods are connected to handles, and the surface of the push plate is connected to a plug. The surface of the plug has an oblique opening, and pulling the handle can cause the plug to be pulled out of the slot.

[0009] Furthermore, a second slot is provided at each of the four corners of the fixed frame, and a second spring is provided inside each set of the second slots. The second spring can drive the electronic level to lift up.

[0010] Furthermore, each set of the second springs is connected to a top block, and the top block and the second spring form an elastic structure, which can push the electronic level to move upward.

[0011] Furthermore, the insert block and the slot form an interlocking connection, and the push plate and the first spring form an elastic structure.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, after the fixture body is locked, the level body is placed in various positions: one horizontally and the other two laterally. The horizontal placement is used to test the parallelism of the two bases, and the lateral placement is used to check the levelness. To reduce the error in measuring the parallelism and flatness of the bases and ensure the accuracy of the inspection, the flatness and parallelism between the lower surface of the fixture body and the position where the slider is locked, and the position where the level body is placed on the upper surface, are required to be high, basically within a single line. By pushing the fixture back and forth, the position of the bubble in the level body is observed, and the feet of the base are adjusted to ensure that the parallelism and flatness of its linear guide are up to standard. This overcomes the problem of leveling the parallelism of the two bases of a large-span machine tool.

[0014] 2. In this utility model, by pulling the two sets of handles to both sides, the plug can be pulled out of the slot, thereby completing the disassembly of the electronic level, which facilitates the regular maintenance of the electronic level and improves the leveling accuracy of the moving base. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural schematic diagram of a machine tool linear guide screw straightness and parallelism inspection fixture proposed in this utility model;

[0016] Figure 2 is a three-dimensional structural diagram of the moving seat of a machine tool linear guide screw inspection fixture proposed in this utility model;

[0017] Figure 3 is a schematic diagram of the first partial cross-sectional structure of the moving seat of the inspection fixture for the straightness and parallelism of the machine tool linear guide screw proposed in this utility model.

[0018] Figure 4 is a partial exploded view of the inspection fixture for the straightness and parallelism of the machine tool linear guide screw proposed in this utility model;

[0019] Figure 5 is a schematic diagram of the second partial cross-sectional structure of the moving seat of the inspection fixture for the straightness and parallelism of the machine tool linear guide screw proposed in this utility model.

[0020] Legend: 1. Base; 2. Movable seat; 3. Lifting device; 4. Fixture; 5. Level body; 6. Easy-to-disassemble component; 601. Fixture; 602. First slot; 603. First spring; 604. Push rod; 605. Handle; 606. Push plate; 607. Insert block; 608. Electronic level; 609. Slot; 610. Second slot; 611. Second spring; 612. Top block. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] As shown in Figures 1-4, this utility model provides a fixture for inspecting the straightness and parallelism of a machine tool linear guide screw. It includes a base 1, a movable seat 2 connected to the top surface of the base 1, lifting devices 3 connected to both sides of the movable seat 2, a fixture body 4 connected to the bottom surface of the base 1, three sets of level bodies 5 equidistantly connected to the surface of the fixture body 4, and a convenient disassembly assembly 6 connected to the top center of the movable seat 2.

[0024] As shown in Figures 3 and 4, the easy-to-disassemble component 6 includes a fixing frame 601. The fixing frame 601 has first slots 602 on both sides, and a first spring 603 is connected inside the two sets of first slots 602.

[0025] As shown in Figure 3, a push rod 604 is inserted inside the first spring 603, and a push plate 606 is connected to the front end of the two sets of push rods 604. The function of the push plate 606 is to bear the elastic force of the first spring 603.

[0026] As shown in Figures 3 and 4, the rear ends of the two sets of push rods 604 are connected to handles 605, and the surface of the push plate 606 is connected to a plug 607. The surface of the plug 607 has a bevel. Pulling the handles 605 can drive the plug 607 to be pulled out of the slot 609.

[0027] As shown in Figures 3 and 5, a second slot 610 is provided at each of the four corners of the fixed frame 601. A second spring 611 is provided inside each set of second slots 610. The second spring 611 can drive the electronic level 608 to be lifted.

[0028] As shown in Figure 5, each set of second springs 611 is connected to a top block 612. The top block 612 and the second spring 611 form an elastic structure. The top block 612 can push the electronic level 608 to move upward.

[0029] As shown in Figures 3 and 5, the insert 607 and the slot 609 form an interlocking connection, and the push plate 606 and the first spring 603 form an elastic structure.

[0030] The effect achieved by the embodiment is as follows: When in use, the base 1 linear guide screw is first assembled, and then the fixture body 4 is placed on the base 1 through the lifting device 3 on the top of the movable seat 2. It is locked with the linear guide slider through the reserved locking holes. The fixture body 4 only has reserved positions for locking three sliders, so two tests are required. After the fixture body 4 is locked, three sets of level bodies 5 are placed in three positions, one horizontal and two lateral. The horizontal position is used to test the parallelism of the two bases 1, and the lateral position is used to check the levelness. In order to reduce the error of the parallelism and flatness measurement of the base 1 and ensure the accuracy of the test, the flatness and parallelism between the position where the lower surface of the fixture body 4 is locked with the slider and the position where the upper surface of the level body 5 is placed are required to be high, basically within one line. The position of the bubble of the level body 5 is observed by pushing the fixture back and forth, and the feet of the base 1 are adjusted to make the parallelism and flatness of the linear guide meet the requirements. This invention overcomes the challenge of leveling the parallelism of the two bases 1 of a large-span machine tool. The parallelism of the lead screw is essentially the same as that of the linear guide. The level instrument is replaced with a dial indicator, which is attached to the fixture body 4. The dial indicator's probes are positioned on the upper and side generatrices of the lead screw. The fixture 4 is then moved, and the lead screw is adjusted based on the dial indicator readings to ensure its parallelism meets standards. This simplifies the operation. The level body 5 and dial indicator directly display the horizontal deviation, avoiding repeated measurements and calculations, saving time. It ensures balanced force distribution at each support point of the base 1, preventing localized stress concentration that could lead to machine tool deformation and maintaining long-term geometric accuracy. For the wide base 1 of a gantry machine tool, the fixture 4 can cover long distances and multiple points for synchronous leveling, solving the problem of insufficient span in traditional methods and addressing the dynamic balance issue of the base 1 during the movement of the moving column. The electronic level 608 can be used to measure the level of the movable base 2. When the electronic level 608 needs to be disassembled for maintenance or inspection, the handles 605 can be pulled to both sides at the same time to pull the insert 607 out of the slot 609. Then the second spring 611 will automatically push the top block 612 upward, pushing the electronic level 608 out of the base 1, thus completing the disassembly. When the electronic level 608 needs to be installed, it can be pushed into the base 1. By squeezing, the insert 607 will automatically retract. When the bottom of the electronic level 608 is in full contact with the fixing frame 601, the first spring 603 will also push the insert 607 into the slot 609 to fix the electronic level 608, thus completing the quick disassembly and assembly of the electronic level 608.

[0031] Working principle: After the fixture body 4 is locked, the level body 5 is placed in various positions, one horizontally and the other two laterally. The horizontal position is used to test the parallelism of the two bases 1, and the lateral position is used to check the levelness. In order to reduce the error in the measurement of the parallelism and flatness of the bases 1 and ensure the accuracy of the inspection, the flatness and parallelism between the lower surface of the fixture body 4 and the position where the slider is locked and the upper surface where the level body 5 is placed are required to be high, basically within a single line. By pushing the fixture back and forth, the position of the bubble in the level body 5 is observed, and the feet of the base 1 are adjusted to ensure that the parallelism and flatness of its linear guide are qualified. This overcomes the problem of leveling the parallelism of the two bases 1 of large-span machine tools. By pulling the two sets of handles 605 to both sides, the insert block 607 can be pulled out from the slot 609, thereby completing the disassembly of the electronic level 608, which facilitates the regular maintenance of the electronic level 608 and improves the level accuracy of the moving base 2.

[0032] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A fixture for inspecting the straightness and parallelism of a machine tool linear guide screw, comprising a base (1), characterized in that: The top surface of the base (1) is connected to a movable seat (2); both sides of the movable seat (2) are connected to a lifting device (3); the bottom surface of the base (1) is connected to a fixture body (4); the surface of the fixture body (4) is equidistantly connected to three sets of level bodies (5); and the top center of the movable seat (2) is connected to a convenient disassembly assembly (6).

2. The inspection fixture for the straightness and parallelism of a machine tool linear guide screw according to claim 1, characterized in that: The easy-to-disassemble component (6) includes a fixing frame (601), and the fixing frame (601) has a first slot (602) on both sides, and a first spring (603) is connected inside the two sets of first slots (602).

3. The inspection fixture for the straightness and parallelism of a machine tool linear guide screw according to claim 2, characterized in that: A push rod (604) is inserted inside the first spring (603), and the front ends of the two sets of push rods (604) are connected to a push plate (606).

4. The inspection fixture for the straightness and parallelism of a machine tool linear guide screw according to claim 3, characterized in that: The rear ends of the two sets of push rods (604) are connected to handles (605), and the surface of the push plate (606) is connected to a plug (607), the surface of the plug (607) is provided with a bevel.

5. The inspection fixture for the straightness and parallelism of a machine tool linear guide screw according to claim 4, characterized in that: The fixing frame (601) has a second slot (610) at each of its four corners, and a second spring (611) is provided inside each set of the second slot (610).

6. The inspection fixture for the straightness and parallelism of a machine tool linear guide screw according to claim 5, characterized in that: Each set of the second springs (611) is connected to a top block (612) at its top, and the top block (612) and the second springs (611) form an elastic structure.

7. The inspection fixture for the straightness and parallelism of a machine tool linear guide screw according to claim 6, characterized in that: The insert (607) and the slot (609) form an interlocking connection, and the push plate (606) and the first spring (603) form an elastic structure.

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