Clamping and positioning device for visual inspection of axial dimension of rotary machine head body

Abstract

The utility model discloses a clamping and positioning device for visual inspection of the axial dimension of a rotary machine head body, and the clamping and positioning device is high in measurement precision and high in efficiency. Comprising a detection base, a lower positioning top head and a detection lower auxiliary block are fixed on a bottom plate of the base, an upper positioning top head and an upper positioning block are arranged in an upper plate of the base in a sliding fit mode, a detection upper pressing block is arranged above the upper plate of the base, and a detection hand wheel is arranged above the detection upper pressing block; the upper positioning block is connected with a detection hand wheel through an upward pulling guide rod, the upper end of the upper positioning top head is fixedly provided with a spring guide needle through a positioning stop block, the upper end of the upper positioning block and the positioning stop block are clamped, and the lower surface of the positioning stop block abuts against an upper plate of the base. The upper end of the upper positioning block, the pull-up guide rod, the positioning stop block and the spring guide pin are all located in the detection upper pressing block, the pull-up guide rod and the spring guide pin are sleeved with springs respectively, the lower ends of the springs act on the upper positioning block / the positioning stop block, and the upper ends of the springs act on the detection upper pressing block.

Description

Technical Field

[0001] The utility model relates to the technical field of visual detection of axial dimensions of firearm parts, in particular to a clamping and positioning device for visual detection of axial dimensions of a rotary machine head body. Background Art

[0002] The rotary machine head body is an important component of firearms. Its structure is complex, with numerous head and circumferential features. On-site inspection of the machined part dimensions using a combination of rigid and standard measuring tools is inefficient, unable to provide quantitative product inspection and accurate batch data support for process assurance. Visual inspection technology offers advantages such as high precision, high speed, and quantifiable results for machine head dimensions. Therefore, a clamping and positioning device for visual inspection of the axial dimensions of the rotary machine head body was designed. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a clamping and positioning device for visually detecting the axial dimensions of a rotary machine head body, which has high measurement accuracy, high efficiency and convenient operation.

[0004] The purpose of this utility model is achieved in this way:

[0005] A clamping and positioning device for visual inspection of the axial dimension of a rotary machine head body comprises an inspection base, the base being C-shaped, the bottom plate of the base being used to be fixed on the inspection table, a lower positioning head and an inspection lower auxiliary block being fixed on the bottom plate of the base, an upper positioning head and an upper positioning block being provided within the upper plate of the base, an upper inspection pressure block being provided above the upper plate of the base, and an inspection handwheel being provided above the upper inspection pressure block;

[0006] The upper positioning block and the upper positioning head are respectively fitted in the upper plate of the base along the vertical sliding manner, and the upper positioning block is connected to the detection handwheel through the upper pulling guide rod, and the upper end of the upper positioning head is fixed with a spring guide needle through the positioning stop block, and the upper end of the upper positioning block and the positioning stop block are clamped so that the upper positioning block and the positioning stop block can move synchronously along the vertical direction, and the detection handwheel is used to pull the upper positioning block upward, and the lower surface of the positioning stop block contacts the upper plate of the base to form vertical positioning, and the upper end of the upper positioning block, the upper pulling guide rod, the positioning stop block, and the spring guide needle are all located in the detection upper pressure block, and the upper pulling guide rod and the spring guide needle are respectively provided with a spring, and the lower end of the spring acts on the upper positioning block / positioning stop block, and the upper end of the spring acts on the detection upper pressure block;

[0007] The lower positioning head is used to cooperate with the tapered hole at the tail of the fuselage body for positioning, the upper positioning head is used to cooperate with the firing pin hole at the head of the fuselage body for positioning, and the upper positioning block is used to cooperate with the shell extractor hook assembly groove of the fuselage body for positioning.

[0008] Preferably, a rectangular through hole is provided on the vertical plate of the detection base, and the rectangular through hole is used to provide a detection space for visual detection, and the detection upper pressure block is fixed to the upper plate of the detection base by bolts.

[0009] Preferably, the upper positioning block is L-shaped as a whole, and the cross-section of the part where the upper positioning block slides with the detection base is rectangular. A threaded hole is provided on the top surface of the upper positioning block, and a stepped shaft pin with an external thread passes through the detection handwheel, the upper pull-up guide rod and the threaded hole of the upper positioning block in sequence to be fixedly connected, so that the detection handwheel, the upper pull-up guide rod and the upper positioning block are fixedly connected. A groove is provided laterally on the upper end side surface of the upper positioning block, and a step is provided on the side surface of the positioning stop block corresponding to the groove. The step is embedded in the groove for positioning, and the lower end of the upper positioning block is used to cooperate with the shell puller hook assembly groove of the machine head body.

[0010] Preferably, the upper positioning plug and the lower positioning plug are cylindrical, and the facing ends of the upper positioning plug and the lower positioning plug are provided with conical tips.

[0011] Preferably, the positioning stop is sleeved on the upper end of the upper positioning head, and the upper pin is inserted and positioned by horizontal detection, and the lower end of the spring guide pin is threadedly fixed to the upper end of the upper positioning head.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0013] 1. The firing pin hole on the head of the rotary machine head, the shell hook assembly slot and the tail tapered hole are used as the parts for clamping and positioning. The upper positioning, upper positioning block and lower positioning are respectively matched with the firing pin hole on the machine head, the shell hook assembly slot and the tail tapered hole for limiting. The operation is convenient, and the positioning part of the device has high coaxiality and verticality, which ensures the repeatability and accuracy of the measurement. The waist of the detection base is hollowed out. During the visual measurement of the parts, the axial dimension detection is not restricted by the fixture. Therefore, it is particularly suitable for the clamping and positioning of the axial dimension visual inspection of the parts.

[0014] 2. This detection, clamping and positioning device has a simple and compact structure, high measurement accuracy, high efficiency, low wear and easy operation.

[0015] 3. This detection, clamping and positioning device is compatible with the axial dimension detection of rotary machine head parts with a total length of 75mm to 95mm.

[0016] 4. For parts of the same type, it can be realized by simply replacing the upper positioning, lower positioning and upper positioning block, with low design and manufacturing costs and good interchangeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a structural diagram of the detection base;

[0019] Figure 3 A schematic diagram of the structure of the upper pressing block for testing;

[0020] Figure 4 This is a schematic diagram of the structure of the detection handwheel;

[0021] Figure 5 Schematic diagram of the structure of the upper positioning head;

[0022] Figure 6 It is a structural diagram of the lower positioning head;

[0023] Figure 7 It is a structural diagram of the upper positioning block;

[0024] Figure 8 It is a structural diagram of the positioning stop block;

[0025] Figure 9 This is a schematic diagram of the structure of the upper pin for detection;

[0026] Figure 10 Schematic diagram of the structure of the spring guide needle;

[0027] Figure 11 Schematic diagram of the structure of the pull-up guide rod;

[0028] Figure 12 The schematic diagram of the structure of the auxiliary block for detection;

[0029] Figure 13 It is an exploded schematic diagram of the present utility model.

[0030] Reference numerals

[0031] In the accompanying drawings, 1-spring, 2-detection base, 3-lower positioning head, 4-upper positioning head, 5-upper positioning block, 6-positioning stop block, 7-detection handwheel, 8-detection upper pressure block, 9-detection upper pin, 10-spring guide needle, 11-detection lower auxiliary block, 12-pull guide rod. DETAILED DESCRIPTION

[0032] A clamping and positioning device for visual inspection of the axial size of a rotary machine head body, comprising an inspection base 2, the base 2 being C-shaped, the bottom plate of the base 2 being used to be fixed on the inspection table, a lower positioning head 3 and an inspection lower auxiliary block 11 being fixed on the bottom plate of the base 2, an upper positioning head 4 and an upper positioning block 5 being provided in the upper plate of the base 2, an inspection upper pressure block 8 being provided above the upper plate of the base 2, and an inspection handwheel 7 being provided above the inspection upper pressure block 8; the upper positioning block 5 and the upper positioning head 4 are respectively fitted in the upper plate of the base 2 along the vertical sliding direction, the upper positioning block 5 is connected to the inspection handwheel 7 by an upper pull guide rod 12, the upper end of the upper positioning head 4 is fixed with a spring guide needle 10 through a positioning stop block 6, and a spring guide needle 10 is fixed to the upper end of the upper positioning block 5 and the positioning stop block 6 The clamping connection enables the upper positioning block 5 and the positioning stop 6 to move synchronously vertically. The inspection handwheel 7 is used to pull the upper positioning block 5 upward, and the lower surface of the positioning stop 6 contacts the upper plate of the base 2, forming a vertical positioning. The upper end of the upper positioning block 5, the upper pull guide rod 12, the positioning stop 6, and the spring guide pin 10 are all located within the upper detection pressure block 8. The upper pull guide rod 12 and the spring guide pin 10 are respectively covered with a spring 1. The lower end of the spring 1 acts on the upper positioning block 5 / positioning stop 6, and the upper end of the spring 1 acts on the upper detection pressure block 8. The lower positioning head 3 is used to mate with the tapered hole at the rear of the machine body, the upper positioning head 4 is used to mate with the firing pin hole at the head of the machine body, and the upper positioning block 5 is used to mate with the assembly groove of the shell extractor of the machine body. The lower auxiliary detection block 11 serves to auxiliary support the lower part of the component and, together with other positioning components, to achieve circumferential positioning.

[0033] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0034] like Figures 1-13As shown, a clamping and positioning device for visual inspection of the axial size of a rotary machine head body includes an inspection base 2, an upper positioning head 4, a lower positioning head 3, an upper positioning block 5, an inspection upper pressure block 8, an inspection handwheel 7, and an inspection lower auxiliary block 11. The lower part of the inspection base 2 is fixedly mounted with the lower positioning head 3 and the inspection lower auxiliary block 11, the upper part of the inspection base 2 is fixedly mounted with the inspection upper pressure block 8, the upper part of the inspection base 2 is provided with a circular and rectangular opening, one end of the upper positioning head 4 and the upper positioning block 5 passes through the upper opening of the inspection base 2 and penetrates into the inspection upper pressure block 8, the bottom of the inspection upper pressure block 8 is provided with a "U"-shaped cavity, which is equipped with a positioning stop block 6, a spring guide needle 10, an upper pull guide rod 12, and a spring 1, the inspection handwheel 7 is placed on the top of the inspection upper pressure block 8, and the positioning stop block 6 is provided with two horizontal and vertical Through hole, use the detection upper pin 9 to fix the upper positioning head 4 on the positioning stop block 6, the head of the upper positioning head 4 is provided with a countersunk hole that cooperates with the spring guide pin 10, and the head of the upper positioning block 5 is provided with a threaded hole. The stepped shaft pin with a thread passes through the detection handwheel 7 and the upper pull-up guide rod 12 in sequence and is fixedly connected to the threaded hole of the upper positioning block 5. The side of the upper positioning block 5 is provided with a card groove 24 that cooperates with the positioning stop block 6. When clamping, pull the detection handwheel 7 upward, the spring 1 is compressed, and the detection handwheel 7 drives the upper pull-up guide rod 12 and the upper positioning block 5 to move upward. The side of the upper positioning block 5 drives the spring guide pin 10, the positioning stop block 6 and the upper positioning head 4 to move upward. The upper positioning head 4, the upper positioning block 5, and the lower positioning head 3 are respectively inserted into the firing pin hole of the head body, the shell hook assembly groove and the tail tapered hole for limiting.

[0035] In this embodiment, Figure 2 As shown, the detection base 2 is in a "C" shape, with a rectangular through hole at the waist, a plurality of threaded holes 13 fixedly connected to the detection upper pressure block 8 at the upper end, a plurality of through holes 18 fixedly connected to the detection table at the lower end, and penetrating rectangular holes 14, 16 and cylindrical holes 15, 17 at the upper and lower ends. The upper positioning block 5 and the upper positioning head 4 can slide up and down in the rectangular hole 14 and the cylindrical hole 15 at the upper end of the detection base 2 respectively, and the fitting clearance is less than 0.002mm. The lower auxiliary block 11 and the lower positioning head 3 are fixedly installed in the rectangular hole 16 and the cylindrical hole 17 openings at the lower end of the detection base 2 respectively.

[0036] In this embodiment, Figure 3 As shown, the upper detection pressure block 8 is rectangular in shape, with a stepped cylindrical through-hole 20 circumferentially fixed to the detection base 2. A cylindrical through-hole 19 is located at the top, which mates with the upper pull guide rod 12. A U-shaped cavity is defined at the bottom. The upper end of the upper positioning block 5 and the positioning stop 6 are located in the lower connecting portion of the U-shaped cavity. The upper end of the U-shaped cavity provides mounting space for the two springs 1. One end of the U-shaped cavity corresponds to the cylindrical through-hole 19.

[0037] In this embodiment, Figure 4As shown, the detection handwheel 7 is a stepped cylindrical shape with a stepped cylindrical pin hole 21 running through the middle. The cylindrical surface of the large end is at an angle of 15° and has a mesh pattern on the surface, which is not cut by hands and has a beautiful appearance.

[0038] In this embodiment, Figure 5 、 Figure 6 As shown, the upper positioning plug 4 is a cylinder with a countersunk hole 23 at the head for mate with the spring guide pin 10 and a circular through-hole 22 on the side for mate with the upper detection pin 9. The lower positioning plug 3 is a stepped cylinder. The tail end of the upper positioning plug 4 and the large head end of the lower positioning plug 3 both adopt a 60° tapered top design. The conical surface of the upper positioning plug 4 mates with the chamfer of the firing pin hole at the head of the machine body, while the conical surface of the lower positioning plug 3 mates with the tapered hole at the tail end of the machine body. The coaxiality of the upper positioning plug 4 relative to the lower positioning plug 3 is ≤0.005mm, and the perpendicularity of the axis of the upper positioning plug 4 and the lower positioning plug 3 to the lower end surface of the detection base 2 is ≤0.005mm.

[0039] In this embodiment, Figure 7 As shown, the upper positioning block 5 is overall in an "L" shape. The upper positioning block 5 passes through the upper opening of the detection base 2 and enters the detection upper pressure block 8. A threaded hole 23 is provided on the head of the upper positioning block 5. The stepped shaft pin with a thread passes through the detection handwheel 7 and the upper pull guide rod 12 in sequence and is fixedly connected to the threaded hole 23 of the upper positioning block 5. A card slot 24 is provided on the side to cooperate with the positioning stop block 6. The lower end of the upper positioning block 5 cooperates with the shell puller hook assembly groove to limit the position. The left and right planes of the lower end are symmetrical and have an oblique angle of 5°.

[0040] In this embodiment, Figure 8 As shown, the positioning stop block 6 is designed as a rectangular parallelepiped as a whole, with a circular through hole 25 arranged horizontally to cooperate with the upper detection pin 9, a circular through hole 26 arranged longitudinally to cooperate with the upper positioning head 4, and a boss arranged on the side to cooperate with the slot 24 of the upper positioning block 5 to limit the position.

[0041] In this embodiment, Figure 9 As shown, the upper detection pin 9 is a "T"-shaped cylindrical pin, which passes through the positioning stop block 6 and the upper positioning head 4 in sequence for fixed connection. The small head end rod is provided with a pin hole 27 for connecting the pin for limiting.

[0042] In this embodiment, Figure 10 As shown, the spring guide needle 10 is a stepped shaft, and the small head end cooperates with the countersunk hole of the head of the upper positioning head 4. The upper pull guide rod 12 is a hollow cylinder, and one end cooperates with the countersunk hole of the head of the upper positioning block 5.

[0043] The use process of this utility model:

[0044] During clamping and positioning, pull the detection handwheel upwards, the spring is compressed, and the detection handwheel drives the upper guide rod and the upper positioning block to move upwards. The small hole for the firing pin on the head of the rotary machine head, the assembly groove for the shell hook, and the tapered hole at the tail are used as the parts for clamping and positioning. The upper positioning head, the upper positioning block, and the lower positioning head are respectively matched with the small hole for the firing pin on the machine head, the assembly groove for the shell hook, and the tapered hole at the tail for limiting the position. The operation is convenient, and the positioning part of the device has high coaxiality and verticality, which ensures the repeatability and accuracy of the measurement. The waist of the detection base is hollowed out. During the visual measurement of the parts, the axial dimension detection is not restricted by the fixture.

[0045] This detection, clamping and positioning device is compatible with the axial dimension detection of rotary machine head parts with a total length of 75mm to 95mm.

[0046] In order to ensure the hardness and wear resistance of the device, the surface of high wear-resistant and tough general cold working die steel is chrome-plated, with a surface hardness of 58HRC~60HRC, which can effectively reduce wear.

[0047] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A clamping and positioning device for visual inspection of the axial dimensions of a rotary machine head, characterized by: The test base is C-shaped, the bottom plate of the base is used to be fixed on the test table, the bottom plate of the base is fixed with a lower positioning head, the upper plate of the base is provided with an upper positioning head and an upper positioning block, the upper plate of the base is provided with a detection upper pressure block, and the upper part of the detection upper pressure block is provided with a detection handwheel; The upper positioning block and the upper positioning head are respectively fitted in the upper plate of the base along the vertical sliding manner, and the upper positioning block is connected to the detection handwheel through the upper pulling guide rod, and the upper end of the upper positioning head is fixed with a spring guide needle through the positioning stop block, and the upper end of the upper positioning block and the positioning stop block are clamped so that the upper positioning block and the positioning stop block can move synchronously along the vertical direction, and the detection handwheel is used to pull the upper positioning block upward, and the lower surface of the positioning stop block contacts the upper plate of the base to form vertical positioning, and the upper end of the upper positioning block, the upper pulling guide rod, the positioning stop block, and the spring guide needle are all located in the detection upper pressure block, and the upper pulling guide rod and the spring guide needle are respectively provided with a spring, and the lower end of the spring acts on the upper positioning block / positioning stop block, and the upper end of the spring acts on the detection upper pressure block; The lower positioning head is used to cooperate with the tapered hole at the tail of the fuselage body for positioning, the upper positioning head is used to cooperate with the firing pin hole at the head of the fuselage body for positioning, and the upper positioning block is used to cooperate with the shell extractor hook assembly groove of the fuselage body for positioning.

2. The clamping and positioning device for visual inspection of the axial dimensions of a rotary machine head according to claim 1, characterized in that: A rectangular through hole is provided on the vertical plate of the detection base, and the rectangular through hole is used to provide a detection space for visual detection. The detection upper pressure block is fixed to the upper plate of the detection base by bolts.

3. The clamping and positioning device for visual inspection of the axial dimensions of a rotary machine head according to claim 1, characterized in that: The upper positioning block is L-shaped as a whole, and the cross-section of the part where the upper positioning block slides with the detection base is rectangular. A threaded hole is provided on the top surface of the upper positioning block, and a stepped shaft pin with an external thread passes through the detection handwheel, the upper pull-up guide rod and the threaded hole of the upper positioning block in sequence to be fixedly connected, so that the detection handwheel, the upper pull-up guide rod and the upper positioning block are fixedly connected. A groove is provided laterally on the upper end side of the upper positioning block, and a step is provided on the side of the positioning stop block corresponding to the groove. The step is embedded in the groove for positioning, and the lower end of the upper positioning block is used to cooperate with the shell puller hook assembly groove of the machine head body.

4. The clamping and positioning device for visual inspection of the axial dimensions of a rotary machine head according to claim 1, characterized in that: The upper positioning plug and the lower positioning plug are cylindrical, and the facing ends of the upper positioning plug and the lower positioning plug are provided with conical tips.

5. The clamping and positioning device for visual inspection of the axial dimensions of a rotary machine head according to claim 1, characterized in that: The positioning stop block is sleeved on the upper end of the upper positioning head and is positioned by inserting the upper pin through a horizontal detection. The lower end of the spring guide pin is threadedly fixed on the upper end of the upper positioning head.

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