Screw pitch measuring device for ball nut

Abstract

The utility model provides a screw pitch measuring device for a ball nut, and mainly relates to the technical field of screw pitch measuring equipment for ball nuts. A screw pitch measuring device for a ball nut comprises a base, a plurality of evenly-distributed connecting rods are installed on the top face of the base, the top end of each connecting rod is provided with an external thread, and a thread measuring pipe is installed at the top end of each connecting rod in a threaded mode. The utility model has the beneficial effects that the threaded measuring tube can be protected through the cooperation of the base and the protective cover, so that the threaded measuring tube is prevented from being exposed, the influence of the external environment on the threaded measuring tube is reduced, and the service life of the threaded measuring tube is prolonged; meanwhile, the screw thread measuring tube is in threaded fit with the connecting rod, the screw pitch of the ball nut can be directly measured, and the screw thread measuring tube does not need to be rotated and replaced back and forth, so that the measuring efficiency is improved, the physical labor of operators is reduced, and convenience is brought to the screw pitch measurement of the ball nut.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the pitch measurement equipment technical field of ball nut, specifically a kind of pitch measurement device for ball nut. BACKGROUND

[0002] Ball nut, as the important component part of ball screw pair, is the highest precision and most commonly used transmission device in current transmission machinery;In the production process of ball nut, the pitch of ball nut needs to be measured to detect the precision of ball nut, and the pitch is measured along the helix direction, the distance between adjacent two threads, generally refers to the axial distance between the corresponding two points on the pitch diameter line of adjacent two teeth on thread;

[0003] The utility model discloses a kind of pitch measurement device for ball nut, including measuring mechanism and connecting handle, multiple threaded pipes are installed on the upper end of measuring head, one measuring mechanism can simultaneously measure multiple pitches, save cost, when measuring pitch, the size of ball nut needed to be measured is compared on the upper end of first scale line, it is convenient to select threaded pipe faster, without individual experiment comparison, save time, when measuring nut, movable mouth can be rotated to the second movable groove corresponding position, so that fixed block is clamped into movable mouth, so that measuring scale is more stable when measuring, not easy to loosen, it is convenient to measure, when replacing threaded pipe, movable slider is pushed back, drive fixed block to be out of movable mouth, transmission measuring scale, after replacement, spring drives fixed block to rebound, so that fixed block is clamped into movable mouth again.

[0004] But the above-mentioned patent still has some deficiencies in the use process: 1, threaded measuring tube lacks protection device, is exposed outside, is easily influenced by external environment, to affect the service life of threaded measuring tube;2, when replacing different threaded measuring tubes, it needs to be adjusted by adjusting device, and cooperates with rotating cross, to replace different threaded measuring tubes, which not only increases the measurement time, and increases the physical labor of operator, and thus brings inconvenience to use. UTILITY MODEL CONTENTS

[0005] To solve the deficiencies of prior art, the utility model provides a kind of pitch measurement device for ball nut, the utility model can protect threaded measuring tube by the cooperation of base and protection cover, so as to avoid threaded measuring tube exposed outside, reduce the influence of external environment on threaded measuring tube, improve the service life of threaded measuring tube;Meanwhile, by the threaded cooperation of threaded measuring tube and connecting rod, the pitch of ball nut can be directly measured, without needing to rotate back and forth and replace threaded measuring tube, so as to improve the measurement efficiency, reduce the physical labor of operator, so as to bring convenience to the pitch measurement of ball nut.

[0006] The utility model discloses a technical scheme which achieves the above-mentioned purpose through the following technical solutions.

[0007] A kind of pitch measuring device for ball nut, including base, the base top surface is equipped with multiple evenly distributed connecting rods, the top end of each connecting rod is provided with external thread, the top end of each connecting rod is threadedly installed thread measuring tube, the thread pitch of each thread measuring tube is different, recess is set up in the both sides of base top surface, first magnet is installed in each recess, protective cover is arranged above base, second magnet is installed in the bottom of the both sides of protective cover, first magnet and second magnet can be adsorbed and connected, and thread measuring tube can be inserted into protective cover.

[0008] Further, the front of the base is provided with a placement groove, and a measuring rod is rotatably installed in the placement groove through a rotating shaft.

[0009] Further, a pull block is installed on one side of the front of the measuring rod.

[0010] Further, connecting plates are installed on the both sides of the protective cover, limit rods are installed on the bottom surface of each connecting plate, limit blocks are installed on the both sides of the base, through holes are formed in each limit block, each limit rod can pass through the corresponding through hole, and limit screws are threadedly installed on each limit block, and one end of each limit screw can be in contact with the corresponding limit rod.

[0011] Further, two front and rear distribution insertion grooves are formed in the both sides of the top surface of the base, two front and rear distribution insertion rods are installed on the bottom surface of the protective cover, and each insertion rod can be inserted into the corresponding insertion groove.

[0012] Further, the protective cover is a transparent protective cover.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The base and the protective cover cooperate to protect the thread measuring tube, thereby avoiding exposure of the thread measuring tube, reducing the influence of the external environment on the thread measuring tube, and improving the service life of the thread measuring tube.

[0015] 2. The thread measuring tube and the connecting rod are threadedly connected to directly measure the pitch of the ball nut, without the need for repeated rotation and replacement of the thread measuring tube, thereby improving the measurement efficiency and reducing the physical labor of the operator, and thus facilitating the pitch measurement of the ball nut. BRIEF DESCRIPTION OF DRAWINGS

[0016] ATTACHMENT Figure 1 is a structural schematic diagram of the utility model;

[0017] Appendix Figure 2 This is a schematic diagram showing the connection between the connecting rod and the threaded measuring tube;

[0018] Appendix Figure 3 This is a schematic diagram of the connecting rod structure;

[0019] Appendix Figure 4 yes Figure 3 The main view;

[0020] Appendix Figure 5 This is a schematic diagram of the measuring rod.

[0021] Appendix Figure 6 This is a structural diagram of the protective cover;

[0022] The following are the labels shown in the attached diagram: 1. Base; 2. Connecting rod; 3. Threaded measuring tube; 4. Groove; 5. First magnet; 6. Protective cover; 7. Second magnet; 8. Placement slot; 9. Rotating shaft; 10. Measuring rod; 11. Scale line; 12. Pull block; 13. Connecting plate; 14. Limiting rod; 15. Limiting block; 16. Through hole; 17. Limiting screw; 18. Slot; 19. Insert rod. Detailed Implementation

[0023] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0024] like Figures 1-6 As shown, the present invention discloses a pitch measuring device for ball nuts, comprising a base 1, with multiple evenly distributed connecting rods 2 mounted on the top surface of the base 1. Each connecting rod 2 has an external thread at its top end, and a thread measuring tube 3 is threadedly mounted on the top end of each connecting rod 2. The connecting rods 2 and the thread measuring tubes 3 are threadedly connected, facilitating later replacement and maintenance of the thread measuring tubes 3. Each thread measuring tube 3 has a different thread pitch. Grooves 4 are formed on both sides of the top surface of the base 1, and a first magnet 5 is installed in each groove 4. A protective cover 6 is provided above the base 1, and second magnets 7 are installed on the bottom sides of both sides of the protective cover 6. The first magnet 5 and the second magnet 7 can be attracted and connected, and the thread measuring tube 4 can extend into the protective cover 6.

[0025] Specific, the base 1 front opening slot 8, the slot 8 is installed by rotating shaft 9 rotating measuring rod 10, the measuring rod 10 on the scale line 11. By rotating shaft 9, the measuring rod 10 can be removed from the slot 8, so that the preliminary measurement of the ball nut, and then facilitate the operator to quickly select the corresponding thread measuring tube 3, thereby improving the measurement efficiency, avoiding multiple back and forth to replace the thread measuring tube 3.

[0026] Specific, the measuring rod 10 front side of the pull block 12. By pull block 12, the operator can pull the measuring rod 10 from the slot 8, while setting the pull block 12, the ball nut side and the pull block 12 contact, thereby improving the accuracy of the preliminary measurement.

[0027] Specific, the protective cover 6 both sides are installed connecting plate 13, each connecting plate 13 bottom surface is installed limiting rod 14, the base 1 both sides are installed limiting block 15, each limiting block 15 is provided with a through hole 16, each limiting rod 14 can pass through the corresponding through hole 16, each limiting block 15 is screwed on the limiting screw 17, one end of each limiting screw 17 can be in contact with the corresponding limiting rod 14. By limiting rod 14 and limiting block 15, under the cooperation of limiting screw 17, the protective cover 6 can be limited, thereby improving the connection stability of the protective cover 6 and the base 1, thereby improving the protection effect.

[0028] Specific, the base 1 top surface both sides are provided with two front and rear distribution of the slot 18, the protective cover 6 bottom surface both sides are installed two front and rear distribution of the plug rod 19, each plug rod 19 can be inserted into the corresponding slot 18. By the cooperation of plug rod 19 and slot 18, the protective cover 6 can be limited, avoiding the offset of the protective cover 6, further improving the protection effect of the protective cover 6.

[0029] Specific, the protective cover 6 is a transparent protective cover. The protective cover 6 is a transparent protective cover, which facilitates the operator to observe the position of the thread measuring tube 3, and facilitates the subsequent measurement.

[0030] Working principle:

[0031] In use of the device, first, the protective cover 6 is removed, then according to the size of the ball nut to be measured, the corresponding thread measuring tube 3 is selected, and then the pitch is measured, by setting a plurality of thread measuring tubes 3, the pitch of different ball nuts can be measured, so that it is not necessary to take a plurality of measuring rules at a time, the measuring efficiency is improved; at the same time, the back and forth adjustment and rotation of different thread measuring tubes 3 is avoided, the corresponding thread measuring tube 3 can be directly selected for measurement, the physical labor of the operator is reduced; after the measurement is completed, the protective cover 6 is covered, under the adsorption of the first magnet 5 and the second magnet 7, the protective cover 6 is tightly connected with the base 1, and then the thread measuring tube 3 is protected, the influence of the external environment on the thread measuring tube 3 is reduced, and the service life of the thread measuring tube 3 is improved.

[0032] The utility model discloses a base and the cooperation of protective cover can carry out the protection to the thread measuring tube, thereby avoided the thread measuring tube exposure, reduced the influence of external environment to the thread measuring tube, improved the service life of thread measuring tube, and simultaneously through the thread cooperation of thread measuring tube and connecting rod, can directly measure the pitch of ball nut, no longer need to rotate back and forth, replace the thread measuring tube, thereby improved the measuring efficiency, reduced the physical labor of operator, thereby brought the convenience to the pitch measurement of ball nut.

[0033] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A pitch measuring device for ball nuts, comprising a base (1), characterized in that: The base (1) top surface is provided with a plurality of evenly distributed connecting rods (2), the top end of each connecting rod (2) is provided with external thread, the top end of each connecting rod (2) is provided with a threaded measuring tube (3) by screwing, the thread distance of each threaded measuring tube (3) is different, the top surface of the base (1) is provided with a recess (4) on both sides, a first magnet (5) is installed in each recess (4), the base (1) is provided with a protective cover (6) above, the second magnet (7) is installed on the bottom of both sides of the protective cover (6), the first magnet (5) and the second magnet (7) can be adsorbed and connected, and the threaded measuring tube (3) can be inserted into the protective cover (6).

2. A lead measurement device for a ball nut as claimed in claim 1, wherein: The base (1) is provided with a placing groove (8) on the front surface, the measuring rod (10) is rotatably installed in the placing groove (8) through the rotating shaft (9), and the scale line (11) is drawn on the measuring rod (10).

3. A lead measurement device for a ball nut as defined in claim 2, wherein: The pulling block (12) is installed on one side of the front surface of the measuring rod (10).

4. A lead measurement device for a ball nut as defined in claim 1, wherein: The connecting plate (13) is installed on both sides of the protective cover (6), the limiting rod (14) is installed on the bottom surface of each connecting plate (13), the limiting block (15) is installed on both sides of the base (1), the through hole (16) is formed in each limiting block (15), each limiting rod (14) can pass through the corresponding through hole (16), and the limiting screw rod (17) is screwed on each limiting block (15). One end of each limiting screw rod (17) can be in contact with the corresponding limiting rod (14).

5. A lead measurement device for a ball nut as defined in claim 1, wherein: The base (1) top surface is provided with a plurality of evenly distributed connecting rods (2), the top end of each connecting rod (2) is provided with external thread, the top end of each connecting rod (2) is provided with a threaded measuring tube (3) by screwing, the thread distance of each threaded measuring tube (3) is different, the top surface of the base (1) is provided with a recess (4) on both sides, a first magnet (5) is installed in each recess (4), the base (1) is provided with a protective cover (6) above, the second magnet (7) is installed on the bottom of both sides of the protective cover (6), the first magnet (5) and the second magnet (7) can be adsorbed and connected, and the threaded measuring tube (3) can be inserted into the protective cover (6).

6. A lead measurement device for a ball nut as defined in claim 1, wherein: The protective cover (6) is transparent.

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