CN211262107U - Hole flatness detection device - Google Patents

Abstract

The utility model discloses a hole flatness detection device, include: the positioning device comprises a body, a rotating shaft, positioning convex blocks, a locking handle, a telescopic block, a measuring meter, a measuring head, a stud, a guide rail and the like, wherein the rotating shaft penetrates through the body, the three positioning convex blocks are positioned in positioning holes uniformly distributed on the rotating shaft, the locking handle is rotated, the positioning convex blocks slide out of the rotating shaft, and then the positioning holes are firmly and uniformly positioned, so that a part is kept stable; the measuring meter and the measuring head are arranged on the telescopic block, and the measuring meter is a dial indicator so as to ensure the sensitivity and the accuracy of detection; the telescopic block is in sliding fit with the body through the guide rail, the guide rail is connected with the stud through a baffle, and synchronous telescopic of the telescopic block and the measuring meter can be realized by rotating the stud so as to effectively adjust the detection range; the device has the advantages of small volume, simple structure, convenient operation and time saving.

Description

Hole flatness detection device

Technical Field

The utility model relates to an examine the utensil field, especially relate to a hole plane degree detection device.

Background

The checking fixture is a short-term checking fixture and is a measuring tool for detecting product characteristics (the product characteristics comprise shapes, positions, matching characteristics among parts and the like). In brief, the checking tool is a ruler. At present, in machine manufacturing, various general detection tools are used for detecting the flatness of parts, particularly planes which are completely exposed and have no obstruction; however, it is extremely difficult to detect the plane of the bottom of the deep hole and the inner cavity of the shell and the cavity parts by using the universal detection tool. However, the hole flatness has a great influence on machining, and particularly for mass production, if the hole flatness is not detected, the flatness is easy to exceed the error range, so that machining errors of other sizes are caused, and finally parts are scrapped.

In the prior art, the flatness detection methods for the corresponding planes of the part holes are roughly divided into three types; firstly, the traditional flatness detection tool is adopted for detection, the detection tool is large in size and not easy to take and place, a product needs to be dissected in advance, the detected surface is exposed, a part support body is manufactured, detection is performed after each position is positioned and a detection pin is inserted, the positioning process is complex, the cost is high, and the limitation on partial small parts is large; secondly, a large-end go-no-go gauge is inserted, so that the operation is simple, but the relative measurement result is inaccurate; thirdly, three-coordinate detection is adopted, the shapes of a plurality of small and medium-sized parts are complex, the required precision is high, the traditional measuring method cannot meet the detection requirement, the detection is carried out on a three-coordinate measuring instrument, the detection precision is high, but the efficiency is low, and the cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims to provide a hole flatness detection device.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

an aperture flatness detection apparatus, comprising: the measuring instrument comprises a body, a rotating shaft, a positioning lug, a first spring, a locking handle, a telescopic block, a measuring meter, a measuring head, a stud, a guide rail and a second spring, wherein the rotating shaft penetrates through the inside of the body and is in sliding connection with the inside of the body, three positioning holes which are communicated with one another are uniformly distributed in one side, penetrating out of the body, of the rotating shaft in the circumferential direction, the positioning lug is positioned in the positioning hole, the first spring is sleeved on the positioning lug and is used for locking and fixing the positioning lug through a ferrule, the locking handle is installed at the end part of the rotating shaft, the head part of the locking handle is in sliding connection with the bottom part of the positioning lug, the telescopic block is positioned above the body and is in sliding fit with the body, the guide rail penetrates through the telescopic block and the body from top to bottom, one end of the guide rail is fixedly connected, the other end of the guide rail is fixedly connected with the stud through a baffle, the second spring is sleeved on the guide rail and is located at a position between the baffle and the body, the measuring meter is installed at one side end of the telescopic block, the meter head of the measuring meter penetrates into the telescopic block, and the measuring head is arranged at the front end of the meter head of the measuring meter and penetrates out from the other side end of the telescopic block.

The measuring meter is fixedly arranged at one side end of the telescopic block through the guide sleeve and the locking block.

Preferably, the dial indicator is selected as the measuring gauge.

The locating lug is an integrated structure formed by an arc-shaped square block and a circular truncated cone with an inclined surface at the bottom, wherein the square block is matched with a symmetrical opening structure arranged on the ferrule for use, and the inclined surface at the bottom is matched with an inclined surface arranged at the head of the locking handle for use.

The baffle is of a T-shaped structure, first round holes are symmetrically formed in two side ends of the baffle, second round holes are formed in the middle boss, the end portion of the guide rail is screwed into the first round holes and fixedly connected with the first round holes, and the lower end of the stud penetrates through the second round holes.

The bottom of the body is provided with a first pin hole, and the rotating shaft is provided with a second pin hole matched with the first pin hole.

Compared with the prior art, the beneficial effects of the utility model are that: this device is small, simple structure, convenient operation, save time, testing process are stable, the reaction is sensitive, detect the accuracy height to this device is equipped with the flexible piece, double-screw bolt and the guide rail isotructure that are used for adjusting the detection plane degree scope, can the flexible piece of effective control stretch out and draw back through rotatory double-screw bolt, accomplishes the quick adjustment of plane degree detection scope.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic perspective view of the body of the present invention;

FIG. 4 is a schematic perspective view of the rotating shaft of the present invention;

FIG. 5 is a schematic sectional view of the rotating shaft according to the present invention;

FIG. 6 is a schematic sectional view of the rotating shaft of the present invention;

fig. 7 is a schematic perspective view of the positioning bump of the present invention;

fig. 8 is a schematic perspective view of the ferrule of the present invention;

fig. 9 is a schematic perspective view of the locking handle of the present invention;

fig. 10 is a schematic perspective view of the first telescopic block of the present invention;

fig. 11 is a schematic perspective view of the telescopic block of the present invention;

fig. 12 is a schematic perspective view of the guide sleeve of the present invention;

fig. 13 is a schematic perspective view of the locking block of the present invention;

fig. 14 is a schematic perspective view of the probe of the present invention;

fig. 15 is a schematic perspective view of the baffle of the present invention;

fig. 16 is a schematic perspective view of the guide rail of the present invention;

fig. 17 is a partial cross-sectional view of the present invention;

fig. 18 is a partial sectional view of the second embodiment of the present invention;

fig. 19 is an illustration of the present invention when detecting the flatness corresponding to the part holes.

In the figure: 1-body; 2-a rotating shaft; 3-positioning the bump; 4-a first spring; 5-locking a handle; 6-a telescopic block; 7-a measuring meter; 8-measuring head; 9-a stud; 10-a guide rail; 11-a second spring; 12-a ferrule; 13-guide sleeve; 14-a locking block; 15-a baffle; 16-a first pin hole; 21-positioning holes; 22-a second pin hole; 151-first circular hole; 152-second circular hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and more obvious, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to 19, the utility model provides a hole flatness detection device, include: the measuring instrument comprises a body 1, a rotating shaft 2, a positioning lug 3, a first spring 4, a locking handle 5, a telescopic block 6, a measuring instrument 7, a measuring head 8, a stud 9, a guide rail 10 and a second spring 11, wherein the rotating shaft 2 penetrates through the inside of the body 1 and is connected in a sliding manner, three mutually communicated positioning holes 21 are uniformly distributed on one side of the rotating shaft 2 penetrating out of the body 1 along the circumferential direction, the positioning lug 3 is positioned in the positioning hole 21, the first spring 4 is sleeved on the positioning lug 3 so that the positioning lug 3 can be quickly and automatically reset after detection is finished, the positioning lug 3 is locked and fixed through a ferrule 12, the ferrule 12 is locked with the rotating shaft 2 through a wire lining, the locking handle 5 is arranged at the end part of the rotating shaft 2, the head part of the locking handle 5 is connected with the bottom of the positioning lug 3 in a sliding manner, and the telescopic block 6 is positioned above the body 1, the two are in sliding fit, the two symmetrically arranged guide rails 10 respectively penetrate through the telescopic block 6 and the body 1 from top to bottom, one end of the guide rail 10 is fixedly connected with the telescopic block 6 through a screw, the stud 9 is connected with the lower end part of the body 1 in a threaded manner and is arranged between the two guide rails 10, the other end of the guide rail 10 is fixedly connected with the stud 9 through a baffle 15, the second spring 11 is sleeved on the guide rail 10, and is positioned between the baffle 15 and the body 1, so that after the flatness detection range is adjusted, the position of the stud 9 is fixed through the action of elastic force, the measuring meter 7 is arranged at one side end of the telescopic block 6, and the gauge head of the measuring gauge 7 penetrates into the telescopic block 6, and the measuring head 8 is arranged at the front end of the gauge head of the measuring gauge 7 and penetrates out from the other side end of the telescopic block 6.

Specifically, the measuring meter 7 is fixedly mounted at one side end of the telescopic block 6 through a guide sleeve 13 and a locking block 14; one end of the guide sleeve 13 is inserted into the round hole at one side end of the telescopic block 6, the gauge head of the measuring gauge 7 is inserted into the guide sleeve 13, a clamping groove is formed in the end part of the guide sleeve 13, the measuring head 8 is a cylinder with a circular table at the tail part, the circular table at the tail part is clamped into the clamping groove, and the head part of the measuring head 8 penetrates out of the round hole at the other side end of the telescopic block 6; and the other end of the guide sleeve 13 is screwed with the joint of the measuring meter 7 through the locking block 14 so as to be locked and fixed.

Preferably, the dial indicator is selected as the measuring gauge 7, the dial indicator is sensitive in response during detection, and flatness errors can be quickly detected.

Specifically, the locating lug 3 is the integral type structure that the round platform that inclined plane was taken to the bottom by taking curved square and, wherein, the square with the symmetry open structure cooperation that is equipped with on the lasso 12 is used, so that right locating lug 3 fixes a position the locking, the bottom inclined plane with the inclined plane cooperation that 5 heads of locking were equipped with is used, and is rotatory locking handle 5, locating lug 3 slides out pivot 2, and then the card is in part hole department, fixes a position the main part, 3 adoption evenly distributed of locating lug 3 are in order to the firm balanced locating part hole more, and the part remains stable purpose when reaching the rotating body.

Specifically, the baffle 15 is of a T-shaped structure, two side ends of the baffle are symmetrically provided with first round holes 151, a middle boss is provided with a second round hole 152, the lower end portion of the guide rail 10 is screwed into the first round hole 151 and is fixedly connected through a screw, the lower end of the stud 9 penetrates through the second round hole 152, and the lower end portion of the stud 9 is provided with a hand wheel, so that the position of the baffle 15 on the stud 9 is further locked, and the baffle is prevented from falling off.

Specifically, the bottom of body 1 is equipped with first cotter hole 16, be equipped with on pivot 2 with second cotter hole 22 that first cotter hole 16 cooperation was used, pivot 2 inserts body 1 back is fixed through the pin, in case pivot 2 drops.

The utility model discloses a concrete theory of operation does:

the method comprises the steps that a positioning plate of a part to be detected penetrates through a rotating shaft 2, a hole corresponds to the area of a positioning lug 3, a locking handle 5 is rotated by being close to a contact of a side head 8 at the front end of a measuring meter 7, three positioning lugs 3 are simultaneously ejected out and clamped with the hole, so that the positioning accuracy and stability are guaranteed to the maximum extent, a zero-setting key of the measuring meter 7 is pressed, a rotating body 1, a telescopic block 6, the measuring meter 7 and a measuring head 8 synchronously rotate to complete detection of corresponding planeness, and in the detection process, digital changes of the measuring meter 7 are observed, so that planeness errors of the part can be detected qualitatively and quantitatively; in addition, the stud 9 is rotated, the stretching of the stretching block 6 can be effectively controlled through the guide rail 10, the rapid adjustment of the flatness detection range is completed, after the adjustment is completed, the second spring 11 is in a compressed state, and the position of the baffle 15 on the stud 9 is further locked by the elastic force of the second spring, so that the baffle is prevented from falling off. After the detection is finished, the locking handle 5 is loosened, the positioning lug 3 is reset under the action of the elastic force of the first spring 4 and falls back into the positioning hole 21 of the rotating shaft 2.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. An aperture flatness detection apparatus, comprising: the measuring instrument comprises a body (1), a rotating shaft (2), a positioning lug (3), a first spring (4), a locking handle (5), a telescopic block (6), a measuring meter (7), a measuring head (8), a stud (9), a guide rail (10) and a second spring (11), wherein the rotating shaft (2) penetrates through the inside of the body (1) and is in sliding connection with the inside of the body, three mutually communicated positioning holes (21) are uniformly distributed in one side, penetrating out of the body (1), of the rotating shaft (2) along the circumferential direction, the positioning lug (3) is positioned in the positioning holes (21), the first spring (4) is sleeved on the positioning lug (3), the positioning lug (3) is locked and fixed through a ferrule (12), the locking handle (5) is installed at the end part of the rotating shaft (2), and the head part of the locking handle (5) is in sliding connection with the bottom of the positioning lug (3), the telescopic block (6) is located above the body (1) and is in sliding fit with the body, the guide rail (10) penetrates through the telescopic block (6) and the body (1) from top to bottom, one end of the guide rail (10) is fixedly connected with the telescopic block (6), the stud (9) is in threaded connection with the lower end portion of the body (1), the other end of the guide rail (10) is fixedly connected with the stud (9) through a baffle (15), the second spring (11) is sleeved on the guide rail (10) and is located at a position between the baffle (15) and the body (1), the measuring meter (7) is installed at one side end of the telescopic block (6), the meter head of the measuring meter (7) penetrates into the telescopic block (6), the measuring head (8) is arranged at the front end of the meter head of the measuring meter (7), and penetrates out from the other side end of the telescopic block (6).

2. A hole flatness detecting device as claimed in claim 1, wherein said measuring gauge (7) is fixedly mounted on one side end of said telescopic block (6) through a guide sleeve (13) and a locking block (14).

3. A hole flatness detection device according to claim 2, characterized in that said measuring gauge (7) is a dial gauge.

4. A hole flatness detection device as claimed in claim 1, wherein said positioning protrusion (3) is an integrated structure consisting of an arc-shaped block and a truncated cone with an inclined bottom, wherein the block is used in cooperation with a symmetrical opening structure provided on said ferrule (12), and the inclined bottom is used in cooperation with an inclined surface provided on the head of said locking handle (5).

5. A hole flatness detecting device as claimed in claim 1, wherein said baffle plate (15) is T-shaped, and two ends of the baffle plate are symmetrically provided with a first circular hole (151), the middle boss is provided with a second circular hole (152), the end of said guide rail (10) is screwed into said first circular hole (151) and fixedly connected, and the lower end of said stud (9) passes through said second circular hole (152).

6. A hole flatness detecting device as claimed in claim 1, wherein the bottom of the body (1) is provided with a first pin hole (16), and the rotating shaft (2) is provided with a second pin hole (22) used in cooperation with the first pin hole (16).

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