Tool for measuring root diameter of incomplete thread of shaft

Abstract

The utility model relates to the technical field of measuring jigs, in particular to a tool for measuring the root diameter of an incomplete thread of a shaft. Comprising a base, a carrier is arranged on the upper surface of the base, a product body is arranged on the upper side of the carrier, incomplete threads are formed in the side wall of the product body, and two brackets are symmetrically and fixedly connected to the positions, close to the edge, of the upper surface of the carrier; the positions, located on the two sides of the incomplete thread, of the product body are rotationally arranged in the two brackets correspondingly. According to the utility model, after the lighter carrier is placed on the heavier base, the transverse movement of the carrier is limited through the matching of the transverse positioning block and one of the check blocks, the longitudinal movement of the carrier is limited through the matching of the longitudinal positioning block and the lifting plate, and the vertical movement of the carrier is limited through the matching of the pressing plate and the base; therefore, when a worker rotates the product body, the product body and the carrier are prevented from moving, and the measurement precision of the worker on the incomplete thread root diameter on the product body is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to measuring jig technical field, concretely relates to a shaft incomplete thread tooth bottom diameter measuring jig. BACKGROUND

[0002] A kind of shaft parts product ontology 3 is provided with incomplete thread, the tooth bottom diameter of this product ontology 3 needs to be measured in production process, and product ontology 3 with qualified tooth bottom diameter is screened out, to ensure the quality of product ontology 3.

[0003] In prior art, when measuring thread tooth bottom diameter using coordinate measuring machine, product ontology 3 needs to be rotated, and the horizontal position and vertical position of product ontology 3 need to be fixed when rotating product ontology 3, so that product ontology 3 can only make rotational motion, to ensure the accuracy of measurement results, and currently product ontology 3 is usually placed on a carrier to limit product ontology 3 to only make rotational motion, however, the carrier is relatively light, and the carrier and product ontology 3 are prone to shift when workers manually rotate product ontology 3, which reduces the accuracy of workers in measuring tooth bottom diameter, therefore, we propose a kind of shaft incomplete thread tooth bottom diameter measuring jig. SUMMARY

[0004] The utility model aims at providing a kind of shaft incomplete thread tooth bottom diameter measuring jig to solve the problems raised in the above background.

[0005] To achieve the above object, one of the purposes of the utility model is to provide a kind of shaft incomplete thread tooth bottom diameter measuring jig, including base, the upper surface of the base is provided with carrier, product ontology is arranged on the upper side of carrier, incomplete thread is set on the side wall of product ontology, two brackets are symmetrically and fixedly connected on the position close to the edge of the upper surface of carrier, product ontology is rotatably arranged in the interior of two brackets at the position on both sides of incomplete thread, the upper surface of carrier is fixedly connected with horizontal positioning block and vertical positioning block, and the upper surface of carrier is provided with two stop blocks, one of the stop blocks and horizontal positioning block respectively contact with the opposite sides of carrier, the other stop block and horizontal positioning block are arranged on the same side of carrier, lifting plate is slidably arranged on the side of base, lifting mechanism is arranged on the bottom of lifting plate, pressing mechanism is arranged on two stop blocks, and the pressing mechanism is used to limit the vertical movement of carrier, when the vertical movement of carrier is limited by pressing mechanism, pressing mechanism pushes lifting mechanism to move horizontally, so that lifting mechanism drives lifting plate to move vertically upward, at this time, lifting plate and vertical positioning block respectively contact with the other two sides of carrier.

[0006] As a further improvement of the technical solution, the pressing mechanism comprises a pressing plate fixedly connected to one side of the stop block near the top, and the other end of the pressing plate is arranged above the object support; two threaded rods are threadedly connected to the base at positions corresponding to the two stop blocks; the upper ends of the threaded rods pass through the corresponding stop blocks and extend outward; a knob and a pressing gear are coaxially fixedly connected to the upper ends of the two threaded rods, respectively; when the knob and the pressing gear are in contact with the upper surfaces of the two stop blocks, respectively, the pressing plate presses the object support downward.

[0007] As a further improvement of the technical solution, the lifting mechanism comprises two symmetrical horizontal frames arranged on one side of the base; a T-shaped block is slidably arranged in the horizontal frame; the T-shaped block is fixedly arranged on one side of the base; two inclined grooves are symmetrically arranged in the bottom of the lifting plate; and the ends of the two horizontal frames that are close to each other are in sliding contact with the two inclined grooves, respectively.

[0008] As a further improvement of the technical solution, the top of one of the horizontal frames is fixedly connected with a corner bracket; one end of the corner bracket is fixedly connected with a first rack; and the first rack is engaged with the pressing gear.

[0009] As a further improvement of the technical solution, a linkage gear is rotatably arranged on one side of the base; a second rack is engagedly connected to the upper side and the lower side of the linkage gear; and one end of each of the two second racks is fixedly arranged on the lower surface of the two horizontal frames.

[0010] Compared with the prior art, the present application has the following advantages:

[0011] The shaft incomplete thread root diameter measuring jig can prevent the product body and the object support from moving when a worker rotates the product body, and can ensure the measurement accuracy of the incomplete thread root diameter on the product body. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0013] Figure 2 It is a sectional view of the overall structure of the present application;

[0014] Figure 3 It is a sectional view of the overall structure of the present application;

[0015] Figure 4 It is a schematic diagram of the structure of the lifting mechanism and the lifting plate combination of the present application.

[0016] The meanings of the various reference signs in the drawings are as follows:

[0017] 1, base; 11, transverse positioning block; 12, longitudinal positioning block;

[0018] 2, object carrier; 21, bracket;

[0019] 3, product body;

[0020] 4, stop block; 41, pressing plate;

[0021] 5, threaded rod; 51, knob; 52, pressing gear;

[0022] 6, lifting plate;

[0023] 7, lifting mechanism; 71, horizontal frame; 72, T-shaped block; 73, corner bracket; 74, first rack; 75, second rack; 76, linkage gear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Embodiment 1

[0026] Please refer to Figures 1-4 The present embodiment aims to provide a shaft incomplete thread root diameter measuring jig. The shaft incomplete thread root diameter measuring jig comprises a base 1. An object carrier 2 is arranged on the upper surface of the base 1. A product body 3 is arranged on the upper side of the object carrier 2. A thread is formed on the side wall of the product body 3. The start and end of the thread are incomplete threads. The part is referred to as an incomplete thread. Two brackets 21 are symmetrically and fixedly connected to the upper surface of the object carrier 2 near the edges. The product body 3 is rotatably arranged in the interiors of the two brackets 21 at positions on both sides of the incomplete thread. The brackets 21 support the product body 3. The product body 3 is in a horizontal placement state. When measuring the root diameter of the incomplete thread, a worker manually rotates the position of the product body 3, which facilitates the worker to use a digital display measuring device to measure the value of the root diameter. The digital display measuring device is a mature measuring device in the prior art, and therefore is not shown in the drawing.

[0027] Because the object carrier 2 is light in weight, when the worker manually rotates the position of the product body 3, the object carrier 2 is easily moved, which causes the product body 3 to move irregularly, and reduces the accuracy of the worker in measuring the root diameter. To solve this problem,

[0028] The upper surface of the support frame 2 is fixedly connected with a transverse positioning block 11 and a longitudinal positioning block 12, and the upper surface of the support frame 2 is provided with two stop blocks 4, one of which and the transverse positioning block 11 are respectively in contact with the opposite sides of the support frame 2, and the stop block 4 and the transverse positioning block 11 cooperate to limit the transverse movement of the support frame 2 on the base 1, and the other stop block 4 and the transverse positioning block 11 are arranged on the same side of the support frame 2, and one side of the base 1 is slidably provided with a lifting plate 6, and the bottom of the lifting plate 6 is provided with a lifting mechanism 7, and the two stop blocks 4 are provided with a pressing mechanism, which is used to limit the vertical movement of the support frame 2, and when the pressing mechanism limits the vertical movement of the support frame 2, the pressing mechanism pushes the lifting mechanism 7 to move horizontally, so that the lifting mechanism 7 drives the lifting plate 6 to move vertically upward, at this time the lifting plate 6 and the longitudinal positioning block 12 are respectively in contact with the other two sides of the support frame 2, so that the lifting plate 6 and the longitudinal positioning block 12 cooperate to limit the longitudinal movement of the support frame 2 on the base 1, and the movement of the support frame 2 is limited by the heavier base 1, which can prevent the support frame 2 from moving when the worker rotates the product body 3, so that the product body 3 can only be manually rotated during measurement, and the measurement accuracy of the product body 3 is ensured.

[0029] The pressing mechanism is detailed as follows, referring to Figure 2 and Figure 3 The pressing mechanism includes a pressing plate 41 fixedly connected to one side of the stop block 4 near the top position, and the other end of the pressing plate 41 is arranged above the support frame 2, and two threaded rods 5 are threadedly connected to the base 1 at positions corresponding to the two stop blocks 4, the upper ends of the threaded rods 5 pass through the corresponding stop blocks 4 and extend outward, and a knob 51 and a pressing gear 52 are coaxially fixedly connected to the upper ends of the two threaded rods 5, respectively, and a hand wheel is coaxially fixedly connected to the upper end of the pressing gear 52, when the worker rotates the two threaded rods 5 by holding the knob 51 and the hand wheel in turn, the threaded rods 5 are moved vertically downward as a whole through the threaded connection between the threaded rods 5 and the support frame 2, and when the moving threaded rods 5 drive the knob 51 and the pressing gear 52 to come into contact with the upper surfaces of the two stop blocks 4, respectively, the pressing plate 41 presses the support frame 2 downward, and the pressing plate 41 cooperates with the base 1 to limit the vertical movement of the support frame 2, thereby preventing the product body 3 from moving during rotation.

[0030] The structure of the lifting mechanism 7 is detailed as follows, referring to Figure 4The lifting mechanism 7 comprises two horizontal frames 71 symmetrically arranged on one side of the base 1, T-shaped blocks 72 are slidably arranged in the horizontal frames 71, the T-shaped blocks 72 are fixedly arranged on one side of the base 1, the T-shaped blocks 72 and the inner walls of the horizontal frames 71 are matched to enable the horizontal frames 71 to move horizontally along a fixed path only, two inclined grooves are symmetrically arranged on the bottom of the lifting plate 6, the two ends of the two horizontal frames 71 close to each other are slidably connected with the two inclined grooves respectively, the top of one of the horizontal frames 71 is fixedly connected with a corner bracket 73, one end of the corner bracket 73 is fixedly connected with a first gear rack 74, the first gear rack 74 is engaged with the compression gear 52, a linkage gear 76 is rotatably arranged on one side of the base 1, the linkage gear 76 is arranged directly below the lifting plate 6, the upper side and the lower side of the linkage gear 76 are both engaged with a second gear rack 75, one end of each of the two second gear racks 75 is fixedly arranged on the lower surface of one of the horizontal frames 71, when a worker holds the hand wheel to rotate one of the threaded rods 5, the threaded rod 5 drives the compression gear 52 to rotate synchronously, the compression gear 52 and the first gear rack 74 are engaged to drive the corner bracket 73 to drive one of the horizontal frames 71 to move horizontally towards the linkage gear 76, the horizontal frame 71 drives one of the second gear racks 75 to move, the second gear rack 75 and the linkage gear 76 are engaged to drive the other second gear rack 75 to move synchronously to drive the other horizontal frame 71 to move synchronously, so as to move the two horizontal frames 71 close to each other, the horizontal frame 71 in movement pushes the lifting plate 6 to move vertically upwards, the inclined grooves and one end of the horizontal frame 71 slide relative to each other, so as to move the lifting plate 6 to a position in contact with one side of the carrier 2, the lifting plate 6 cooperates with the longitudinal positioning block 12 to limit the longitudinal movement of the carrier 2, so as to prevent the product from moving during rotation, and ensure the measurement accuracy of the product body 3.

[0031] The steps of using the measuring jig to measure the diameter of the incomplete thread root of the product are as follows: first, one end of the carrier 2 is placed on the upper surface of the base 1, then the carrier 2 is moved horizontally towards the longitudinal positioning block 12, so that one end of the carrier 2 is in contact with the longitudinal positioning block 12, and the transverse positioning block 11 and one of the stop blocks 4 are in contact with the two sides of the carrier 2 respectively, so as to limit the transverse movement of the carrier 2, then the knob 51 and the compression gear 52 are rotated in sequence, the downward moving threaded rod 5 drives the knob 51 and the compression gear 52 to contact the upper surface of the stop block 4, the compression plate 41 presses the carrier 2 downwards, so as to limit the upward movement of the carrier 2, the compression gear 52 drives the lifting plate 6 to move vertically upwards when rotating, so as to limit the longitudinal movement of the carrier 2, thereby preventing the carrier 2 from moving when the worker rotates the product body 3, and ensuring the measurement accuracy of the diameter of the incomplete thread root on the product body 3.

[0032] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A jig for measuring the bottom diameter of an incomplete thread of a shaft, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a carrier (2), the product body (3) is provided on the upper side of the carrier (2), an incomplete thread is provided on the side wall of the product body (3), two brackets (21) are symmetrically fixedly connected to the upper surface of the carrier (2) near the edge, the positions on both sides of the incomplete thread on the product body (3) are respectively rotatably arranged inside the two brackets (21), the upper surface of the carrier (2) is fixedly connected with a transverse positioning block (11) and a longitudinal positioning block (12), and the upper surface of the carrier (2) is provided with two stoppers (4), one of the stoppers (4) and the transverse positioning block (11) is respectively connected to the carrier ( 2) two opposite sides are in contact, another stopper (4) and a transverse positioning block (11) are arranged on the same side of the carrier (2), a lifting plate (6) is slidingly arranged on one side of the base (1), a lifting mechanism (7) is arranged at the bottom of the lifting plate (6), and a clamping mechanism is arranged on the two stoppers (4), and the clamping mechanism is used to limit the vertical movement of the carrier (2). When the clamping mechanism limits the vertical movement of the carrier (2), the clamping mechanism pushes the lifting mechanism (7) to move horizontally, so that the lifting mechanism (7) drives the lifting plate (6) to move vertically upward, and at this time, the lifting plate (6) and the longitudinal positioning block (12) are respectively in contact with the other two sides of the carrier (2).

2. The jig for measuring the bottom diameter of an incomplete shaft thread according to claim 1, characterized in that: The clamping mechanism comprises a clamping plate (41) fixedly connected to a position near the top of one side of the stopper (4); the other end of the clamping plate (41) is arranged above the carrier (2); two threaded rods (5) are threadedly connected to positions corresponding to the two stoppers (4) on the base (1); the upper ends of the threaded rods (5) pass through the corresponding stoppers (4) and extend outward; the two threaded rods (5) are coaxially fixedly connected with a knob (51) and a clamping gear (52); when the knob (51) and the clamping gear (52) respectively contact the upper surfaces of the two stoppers (4), the clamping plate (41) presses the carrier (2) downward.

3. The jig for measuring the bottom diameter of an incomplete shaft thread according to claim 2, characterized in that: The lifting mechanism (7) comprises two transverse frames (71) symmetrically arranged on one side of the base (1); a T-shaped block (72) is slidably arranged inside the transverse frame (71); the T-shaped block (72) is fixedly arranged on one side of the base (1); two inclined grooves are symmetrically provided at the bottom of the lifting plate (6); and the ends of the two transverse frames (71) that are close to each other are in sliding contact with the two inclined grooves respectively.

4. The jig for measuring the bottom diameter of an incomplete shaft thread according to claim 3, characterized in that: The top of one of the transverse frames (71) is fixedly connected to a corner frame (73), one end of the corner frame (73) is fixedly connected to a first rack (74), and the first rack (74) is meshed with a pressing gear (52).

5. The jig for measuring the bottom diameter of an incomplete shaft thread according to claim 3, characterized in that: A linkage gear (76) is rotatably provided on one side of the base (1), and the upper and lower sides of the linkage gear (76) are both meshedly connected with second racks (75), and one end of the two second racks (75) is respectively fixed on the lower surfaces of the two horizontal frames (71).

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