Detection device

Abstract

The invention relates to the technical field of precision measurement, and relates to a detection device, which comprises a base station provided with a to-be-detected area and defining a positioning end face along the horizontal direction; the detection mechanism is fixed on the base table and comprises a detection unit and a driving unit; the detection unit is located above the to-be-detected area, the detection unit is provided with an abutting piece, a first detection head and a second detection head, the bottom of the abutting piece is provided with a first fairway measuring head and a second fairway measuring head, and the first detection head and the second detection head can be relatively far away from or close to the abutting piece; the first detection head and the second detection head are located above the first fairway detection head and the second fairway detection head; the first distance between the first detection head and the second detection head is larger than or equal to the second distance between the first fairway measuring head and the second fairway measuring head. Therefore, the problem of how to quickly measure the center height of the connection position of the straight line part and the arc line part in the inner end face of the bell housing at intervals in the existing measuring gauge is solved.

Description

Technical Field

[0001] The present invention relates to the field of precision measurement technology, and in particular to a detection device. Background Art

[0002] The bell housing, mounted on a ball-and-cage universal joint, serves as a steering connection. For bell housings with hemispherical inner end faces, after the spherical and inner end faces are machined, the distance between the center height at the junction of the straight and curved portions of the inner end face of the bell housing is currently mostly inspected using three-coordinate testing or other complex inspection fixtures. Both these methods have limitations, including data collection based on a few points for evaluation. This lack of reliability in practice results in low inspection efficiency and cumbersome quality control processes. These are the shortcomings of existing technologies. Summary of the Invention

[0003] In order to solve the problem of how to quickly realize the center height of the connection position of the straight line part and the arc part in the inner end surface of the bell-shaped housing in the existing measuring fixture, the present invention provides a detection device.

[0004] In a first aspect, the present invention provides a detection device, comprising:

[0005] A base is provided on the base, wherein an area to be inspected is provided on the base, and a positioning end surface is defined in the horizontal direction of the area to be inspected;

[0006] A detection mechanism is fixed on a base, the detection mechanism comprising a detection unit and a driving unit for driving the detection unit to move in a vertical direction; the detection unit is located above the area to be detected, the detection unit comprises an abutment member, a first detection head, and a second detection head, a first ball track probe and a second ball track probe are provided at the bottom of the abutment member, the first ball track probe and the second ball track probe are symmetrically arranged along a first direction, the first detection head and the second detection head are symmetrically arranged along a second direction, the first detection head and the second detection head can be relatively far away from or close to the abutment member, and the first detection head and the second detection head are both located above the first ball track probe and the second ball track probe;

[0007] Wherein, a first distance between the first detection head and the second detection head is greater than or equal to a second distance between the first ball track detection head and the second ball track detection head.

[0008] In some embodiments, the detection unit also includes a positioning block, a first measuring piece and a second measuring piece, the abutment piece is connected to the bottom of the positioning block, the first end of the first measuring piece and the first end of the second measuring piece are movably connected to the positioning block, the second end of the first measuring piece and the second end of the second measuring piece are both extended downward, and the first measuring piece and the second measuring piece are respectively located on opposite sides of the abutment piece along the second direction, and the first measuring piece and the second measuring piece are respectively used to drive the first detection head and the second detection head so that they can be relatively far away from or close to the abutment piece.

[0009] In some embodiments, the abutment member includes a main body portion, the main body portion is connected to the bottom of the positioning block, and a first extension portion and a second extension portion are respectively extended on opposite sides of the bottom end of the main body portion along the first direction, the first ball track probe is arranged on the first extension portion and away from one end of the side where the main body portion is located, and the second ball track probe is arranged on the second extension portion and away from one end of the side where the main body portion is located.

[0010] In some embodiments, a first limiting portion is provided extending outward from a top portion of an end of the first extension portion away from the main body portion, a first limiting channel is formed in the first limiting portion along the second direction, a first limiting step is formed at an end of the first limiting channel away from the main body portion, the first detection head is movably disposed in the first limiting channel, and the first limiting step is used to limit the displacement of the first detection head along the second direction;

[0011] The first measuring member drives the first detection head to move toward the side where the first limiting step is located, so that a portion of the first detection head is exposed outside the first limiting channel.

[0012] In some embodiments, a second limiting portion is provided on the top of one end of the second extension portion that is located away from the main body portion and extends outwardly, a second limiting channel is formed on the second limiting portion along the second direction, a second limiting step is formed on one end of the second limiting channel that is away from the main body portion, the second detection head is movably provided in the second limiting channel, and the second limiting step is used to limit the displacement of the second detection head along the second direction;

[0013] The second measuring member drives the second detection head to move toward the side where the second limiting step is located, so that part of the second detection head is exposed outside the second limiting channel.

[0014] In some embodiments, the first measuring member includes a first main body and a first abutting portion, the top of the first main body being hinged to the positioning block, the first abutting portion extending from the bottom of the first main body toward an end away from the main body along the second direction, and the first abutting portion abuts against the first detection head;

[0015] The detection unit also includes a first telescopic operating rod and a first elastic member, one end of the first elastic member is connected to the main body, and the other end of the first elastic member abuts against the first main body or the first abutting portion, one end of the first telescopic operating rod is fixed to the first main body, and the other end of the first telescopic operating rod is exposed outside the positioning block.

[0016] In some embodiments, the second measuring member includes a second main body and a second abutting portion, the top of the second main body being hinged to the positioning block, the second abutting portion extending from the bottom of the second main body toward an end away from the main body along a second direction, and the second abutting portion abuts against the second detection head;

[0017] The detection unit also includes a second telescopic operating rod and a second elastic member, one end of the second elastic member is connected to the main body, and the other end of the second elastic member abuts against the second main body or the second abutting portion, one end of the second telescopic operating rod is fixed on the second main body, and the other end of the second telescopic operating rod is exposed outside the positioning block.

[0018] In some embodiments, the detection mechanism further includes a first sensor and a second sensor, wherein the first sensor is used to measure the distance moved by the first ball track probe in the vertical direction, and the second sensor is used to measure the distance between the first detection head and the second detection head.

[0019] In some embodiments, the workpiece is placed on the area to be inspected, and the workpiece has a receiving groove, the receiving groove is arranged opposite the inspection unit, and the inner surface of the receiving groove has a straight portion and a curved portion, the straight portion is located above the curved portion, and the connection between the straight portion and the curved portion is a smooth transition connection, and the height H between the connection between the straight portion and the curved portion and the positioning end surface is in the range of: H = H1-H2+H3;

[0020] Wherein, H1 is the height from the center of the first ball track probe to the positioning end face when the detection unit rises to the highest point;

[0021] H2 is the moving distance when the detection unit descends to the lowest point. At this time, the first ball track probe and the second ball track probe collide with each other at the arc part, and the first detection head and the second detection head collide with each other at the straight part.

[0022] H3 is the height between the connection of the straight portion and the arc portion and the center of the ball probe, and H3 is obtained by the center distance M1 between the first ball probe and the second ball probe and the center distance M2 between the first detection head and the second detection head through the first rule.

[0023] In some embodiments, the first rule is: ; Where R1 is the radius of the first and second detection heads, and R2 is the radius of the first and second ball track probes.

[0024] In some embodiments, the driving unit includes a column, a lifting control rod, a first connecting member and a second connecting member. The column is connected to the base in the vertical direction, and a slide rail is formed in the vertical direction at one end of the column facing the side where the inspection area is located. The positioning block is connected to a slider, and the positioning block is movably connected to the slide rail through the slider; a first fitting portion is formed in the middle of the lifting control rod, and the lifting control rod is hinged to the top of the column through the first fitting portion; one end of the lifting control rod is hinged to one end of the first connecting member, the other end of the first connecting member is hinged to one end of the second connecting member, and the other end of the second connecting member is connected to the top of the positioning block.

[0025] In order to solve the problem of how to quickly achieve the center height of the connection position between the straight line part and the arc part in the inner end surface of the bell-shaped housing in the existing measuring fixture, the present invention has the following advantages:

[0026] According to the technical solution of the present invention, an inspection area is provided on a base, and the inspection unit of the inspection mechanism is located above the inspection area. The inspection unit is driven by a driving unit to move upward in a vertical direction, so that the workpiece can be placed in the inspection area. The first and second ball track probes of the inspection unit are provided at the bottom of the abutment member. The first and second inspection heads can move relatively away from or toward the abutment member, and cooperate with the first and second ball track probes to place the workpiece in the inspection area. The inspection unit is driven to extend into the receiving groove of the workpiece, so that the first and second ball track probes abut against the arc portion, and the first and second inspection heads abut against the straight portion. The mathematical function relationship between the measurement value and the radius of the two ball track probes and the radius of the two inspection heads is determined by using the change in the center distance of the two inspection heads abutting against the straight portion. Therefore, the center height of the connection position of the straight portion and the arc portion in the inner end surface of the bell housing can be quickly measured. At the same time, it can also measure non-spherical workpieces with different inner diameters and shapes, thereby improving the versatility of the inspection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A structural schematic diagram of a detection device is shown.

[0028] Figure 2 Shown Figure 1 A schematic structural diagram of another embodiment of the dotted circle D shown in FIG;

[0029] Figure 3 Shown Figure 1 Schematic diagram of the detection device detecting a workpiece shown in FIG.

[0030] Reference numerals: 10-detection device; 11-base; 111-area to be detected; 112-positioning end surface; 12-detection unit; 121-positioning block; 1211-slider; 122-abutment member; 1221-first ball track probe; 1222-second ball track probe; A-body; B1-first extension; B2-second extension; C1-first limiting portion; C2-second limiting portion; 123-first measuring member; E1-first Main body; E2-first interference part; 1231-first detection head; 124-second measuring part; E3-second main body; E4-second interference part; 1241-second detection head; 125-first telescopic operating rod; 126-second telescopic operating rod; 13-driving unit; 131-column; 1311-slide rail; 132-lifting operating rod; 1321-first fitting part; 133-first connecting part; 134-second connecting part. DETAILED DESCRIPTION

[0031] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the present disclosure, rather than to imply any limitation on the scope of the present disclosure.

[0032] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment." The term "another embodiment" is to be interpreted as "at least one other embodiment." Terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships. For example, the term "on" may, in certain circumstances, be used to indicate a dependency or connection relationship. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" are to be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise specified, "plurality" means two or more.

[0033] This embodiment discloses a detection device 10, such as Figure 1 and Figure 2 As shown, the detection device 10 includes: a base 11, a to-be-detected area 111 is provided on the base 11, and a positioning end surface 112 is defined in the horizontal direction of the to-be-detected area 111;

[0034] A detection mechanism is fixed on the base 11, and the detection mechanism includes a detection unit 12 and a driving unit 13 that drives the detection unit 12 to move in a vertical direction; the detection unit 12 is located above the area to be detected 111, and the detection unit 12 has an abutment member 122, a first detection head 1231, and a second detection head 1241. A first ball track probe 1221 and a second ball track probe 1222 are provided at the bottom of the abutment member 122, and the first ball track probe 1221 and the second ball track probe 1222 are symmetrically arranged along the first direction, and the first detection head 1231 and the second detection head 1241 are symmetrically arranged along the second direction, and the first detection head 1231 and the second detection head 1241 can be relatively far away from or close to the abutment member 122, and the first detection head 1231 and the second detection head 1241 are both located above the first ball track probe 1221 and the second ball track probe 1222;

[0035] The first distance between the first detection head 1231 and the second detection head 1241 is greater than or equal to the second distance between the first ball track probe 1221 and the second ball track probe 1222 .

[0036] In this embodiment, a detection device 10 is provided. The detection device 10 includes a base 11, on which an area to be detected 111 is provided. A detection mechanism is detachably connected to the area to be detected 111. The detection mechanism includes a detection unit 12 and a drive unit 13 that drives the detection unit 12 to move in a vertical direction, so that the drive unit 13 drives the detection unit 12 to move in a vertical direction toward or away from the side of the area to be detected 111. The detection unit 12 includes an abutment 122, a first detection head 1231, and a second detection head 1241. The first detection head 1231 and the second detection head 1241 can both move relatively away from or toward the side of the abutment 122. In the present application, a first ball track probe 1221 and a second ball track probe 1222 are further provided at the bottom of the abutment member 122, such that the first ball track probe 1221 and the second ball track probe 1222 are symmetrically arranged along a first direction, and the first detection head 1231 and the second detection head 1241 are symmetrically arranged along a second direction. In the present application, the first direction and the second direction are preferably arranged parallel to the direction of the horizontal plane, and the first direction and the second direction can be the same or different.

[0037] Specifically, first detection head 1231 and second detection head 1241 are both located above first ball track probe 1221 and second ball track probe 1222, and a first distance between first detection head 1231 and second detection head 1241 is greater than or equal to a second distance between first ball track probe 1221 and second ball track probe 1222. First ball track probe 1221 and second ball track probe 1222 are detachably fixedly connected to abutment member 122, and the second distance between first ball track probe 1221 and second ball track probe 1222 is a fixed value. Because first detection head 1231 and second detection head 1241 are movable relative to the side of abutment member 122 in the second direction, the center distance between first detection head 1231 and second detection head 1241 is a variable value. In the present application, the first distance between the first detection head 1231 and the second detection head 1241 is the effective detection distance, that is, the effective moving distance between the outermost sides of the first detection head 1231 and the second detection head 1241 when they move relative to each other.

[0038] Specifically, the present application utilizes a method of setting a to-be-detected area 111 on the base 11, so that the detection unit 12 of the detection mechanism is located above the to-be-detected area 111, and the detection unit 12 is driven by the driving unit 13 to move upward in the vertical direction, so that the workpiece (i.e., the bell-shaped shell) can be placed in the to-be-detected area 111; wherein, the first ball track probe 1221 and the second ball track probe 1222 of the detection unit 12 are arranged at the bottom of the abutment 122, and the first detection head 1231 and the second detection head 1241 can be relatively moved away from or close to the abutment 122, and cooperate with the first ball track probe 1221 and the second ball track probe 1222 to place the workpiece into the to-be-detected area 111. In the detection area 111, by driving the detection unit 12 into the accommodating groove of the workpiece, the first ball track probe 1221 and the second ball track probe 1222 are in contact with the arc part, and the first detection head 1231 and the second detection head 1241 are in contact with the straight part. The change in the size of the center distance of the two detection heads in contact with the straight part is used to determine the mathematical function relationship between the measurement value and the radius of the two ball track probes and the radius of the two detection heads, so as to quickly realize the center height of the connection position of the straight part and the arc part in the inner end face of the bell shell. At the same time, it is also possible to measure non-complete spherical workpieces with different inner diameters and shapes, thereby improving the versatility of use of the detection device 10.

[0039] In some embodiments, as Figure 3 As shown, the workpiece is placed on the area to be inspected 111, and the workpiece has a receiving groove. The receiving groove is arranged opposite to the inspection unit 12, and the inner surface of the receiving groove has a straight portion and an arc portion. The straight portion is located above the arc portion, and the connection between the straight portion and the arc portion is smoothly transitioned. The height H between the connection between the straight portion and the arc portion and the positioning end surface 112 is in the range of: H = H1-H2+H3;

[0040] Wherein, H1 is the height from the center of the first ball track probe 1221 to the positioning end surface 112 when the detection unit 12 rises to the highest point;

[0041] H2 is the moving distance when the detection unit 12 descends to the lowest point. At this time, the first ball track probe 1221 and the second ball track probe 1222 abut against the arc portion, and the first detection head 1231 and the second detection head 1241 abut against the straight portion.

[0042] H3 is the height between the connection of the straight portion and the arc portion and the center of the ball probe, and H3 is obtained by the center distance M1 of the first ball probe 1221 and the second ball probe 1222 and the center distance M2 of the first detection head 1231 and the second detection head 1241 through the first rule.

[0043] Furthermore, the first rule is: ; Wherein, R1 is the radius of the first detection head 1231 and the second detection head 1241 , and R2 is the radius of the first ball track probe 1221 and the second ball track probe 1222 .

[0044] Furthermore, the detection mechanism further includes a first sensor and a second sensor. The first sensor is used to measure the distance moved in the vertical direction by the first ball track probe 1221 , and the second sensor is used to measure the distance between the first detection head 1231 and the second detection head 1241 .

[0045] In this embodiment, the workpiece can be placed in the area to be inspected 111, and the detection unit 12 can be driven to extend into the accommodating groove of the workpiece, so that the first ball track probe 1221 and the second ball track probe 1222 are in contact with the arc portion. At this time, the first detection head 1231 and the second detection head 1241 are in contact with the straight portion. The center distance M2 value between the first detection head 1231 and the second detection head 1241 at this moment can be obtained by the set sensor, and the values ​​of H1 and H2 can be obtained. The above calculation formula can be used to quickly calculate the H3 value, and finally the value of the height H between the connection between the straight portion and the arc portion and the positioning end face 112 can be obtained. In the present application, since the first ball track probe 1221 and the second ball track probe 1222 are symmetrically arranged along the first direction, the radii of the two ball track probes are equal; the first detection head 1231 and the second detection head 1241 are symmetrically arranged along the second direction, that is, the radii of the two detection heads are also equal; in the present application, it is preferred that the radius of the first detection head 1231 is also equal to the radius of the first ball track probe 1221, that is, the calculation formula of H3 can be simplified to .

[0046] In some embodiments, the detection unit 12 also includes a positioning block 121, a first measuring piece 123 and a second measuring piece 124, the abutment 122 is connected to the bottom of the positioning block 121, the first end of the first measuring piece 123 and the first end of the second measuring piece 124 are both movably connected to the positioning block 121, the second end of the first measuring piece 123 and the second end of the second measuring piece 124 are both extended downward, and the first measuring piece 123 and the second measuring piece 124 are respectively located on opposite sides of the abutment 122 along the second direction, and the first measuring piece 123 and the second measuring piece 124 are respectively used to drive the first detection head 1231 and the second detection head 1241 so that they can be relatively far away from or close to the abutment 122.

[0047] Furthermore, the abutment member 122 includes a main body portion A, which is connected to the bottom of the positioning block 121, and a first extension portion B1 and a second extension portion B2 are respectively extended on opposite sides of the bottom end of the main body portion A along the first direction. The first ball probe 1221 is arranged on the first extension portion B1 and is arranged away from one end of the side where the main body portion A is located, and the second ball probe 1222 is arranged on the second extension portion B2 and is arranged away from one end of the side where the main body portion A is located.

[0048] In this embodiment, through the above-mentioned arrangement, the two first detection heads 1231 and the second detection heads 1241 can move freely relative to the main body A of the abutment member 122 during the movement process. At the same time, the abutment member 122 is set to a special structure of the main body A and the first extension part B1 and the second extension part B2, which can enable the first measuring member 123 to drive the first detection head 1231 to move freely in the space formed between the main body A and the first extension part B1, and at the same time enable the second measuring member 124 to drive the second detection head 1241 to move freely in the space formed between the main body A and the second extension part B2, thereby reasonably arranging the use space of the detection unit 12.

[0049] In some embodiments, a first limiting portion C1 is provided on the top of the end of the first extension portion B1 located away from the main body portion A and extends outwardly. The first limiting portion C1 forms a first limiting channel along the second direction. A first limiting step is formed at the end of the first limiting channel away from the main body portion A. The first detection head 1231 is movably disposed in the first limiting channel. The first limiting step is used to limit the displacement of the first detection head 1231 along the second direction.

[0050] The first measuring member 123 drives the first detection head 1231 to move toward the side where the first limiting step is located, so that a portion of the first detection head 1231 is exposed outside the first limiting channel.

[0051] Furthermore, the first measuring member 123 includes a first main body E1 and a first contact portion E2. The top of the first main body E1 is hinged to the positioning block 121. The first contact portion E2 extends along the second direction from the bottom of the first main body E1 toward an end away from the main body A. The first contact portion E2 contacts the first detection head 1231.

[0052] The detection unit 12 also includes a first telescopic operating rod 125 and a first elastic member, one end of the first elastic member is connected to the main body A, and the other end of the first elastic member abuts against the first main body E1 or the first abutting portion E2. One end of the first telescopic operating rod 125 is fixed to the first main body E1, and the other end of the first telescopic operating rod 125 is exposed outside the positioning block 121.

[0053] In this embodiment, through the above-mentioned structural setting, by manipulating the movement of the first telescopic operating rod 125, the first main body E1 or the first contact portion E2 is forced to compress the first elastic member, so that the first contact portion E2 of the first measuring member 123 moves toward the end on the side of the first limiting channel away from the first limiting portion C1, thereby enabling the first detection head 1231 to move freely within the first limiting channel, thereby achieving the adjustment of the movable position of the first detection head 1231, so that the distance between the outermost sides of the first detection head 1231 and the second detection head 1241 is reduced, so that the first detection head 1231 and the second detection head 1241 can be extended into the receiving groove of the workpiece, so that the first detection head 1231 and the second detection head 1241 both contact the straight portion of the inner side surface of the receiving groove of the workpiece, thereby achieving equivalent measurement of the diameter located at the straight portion of the inner side surface of the receiving groove of the workpiece. In this application, it is preferred that the other end of the first elastic member contacts the first main body E1.

[0054] In some embodiments, a second limiting portion C2 is provided on the top of the end of the second extension portion B2 located away from the side where the main body portion A is located, extending outwardly. The second limiting portion C2 forms a second limiting channel along the second direction. A second limiting step is formed at the end of the second limiting channel away from the side where the main body portion A is located. The second detection head 1241 is movably disposed in the second limiting channel. The second limiting step is used to limit the displacement of the second detection head 1241 along the second direction.

[0055] The second measuring member 124 drives the second detection head 1241 to move toward the side where the second limiting step is located, so that a portion of the second detection head 1241 is exposed outside the second limiting channel.

[0056] Furthermore, the second measuring member 124 includes a second main body portion E3 and a second abutting portion E4. The top of the second main body portion E3 is hinged to the positioning block 121. The second abutting portion E4 extends along a second direction from the bottom of the second main body portion E3 toward an end away from the main body portion A. The second abutting portion E4 abuts against the second detection head 1241.

[0057] The detection unit 12 also includes a second telescopic operating rod 126 and a second elastic member, one end of the second elastic member is connected to the main body A, and the other end of the second elastic member abuts against the second main body E3 or the second abutting portion E4. One end of the second telescopic operating rod 126 is fixed on the second main body E3, and the other end of the second telescopic operating rod 126 is exposed outside the positioning block 121.

[0058] In this embodiment, through the above-mentioned structural setting, the second telescopic operating rod 126 can be manipulated to move, thereby forcing the second main body E3 or the second resistance part E4 to compress the second elastic member, so that the second resistance part E4 of the second measuring member 124 moves toward the end on the side of the second limiting channel away from the second limiting part C2, so that the second detection head 1241 can move freely within the second limiting channel, thereby adjusting the movable position of the second detection head 1241, so that the distance between the outermost side of the first detection head 1231 and the second detection head 1241 is reduced, so that the second detection head 1241 and the first detection head 1231 can be extended into the receiving groove of the workpiece, so that the first detection head 1231 and the second detection head 1241 both contact the straight portion of the inner side surface of the receiving groove of the workpiece, thereby achieving equivalent measurement of the diameter located at the straight portion of the inner side surface of the receiving groove of the workpiece. In this application, it is preferred that the other end of the second elastic member contacts the second main body E3.

[0059] In some embodiments, as Figure 1 As shown, the first detection head 1231 can also be detachably connected to the first resistance portion E2 of the first measuring member 123, and the second detection head 1241 can also be detachably connected to the second resistance portion E4 of the second measuring member 124, but this application is not limited to this.

[0060] In some embodiments, the driving unit 13 includes a column 131, a lifting control rod 132, a first connecting member 133 and a second connecting member 134, the column 131 is connected to the base 11 in the vertical direction, and a slide rail 1311 is formed in the vertical direction at one end of the column 131 facing the side where the detection area 111 is located, and a slider 1211 is connected to the positioning block 121, and the positioning block 121 is movably connected to the slide rail 1311 through the slider 1211; a first fitting portion 1321 is formed in the middle of the lifting control rod 132, and the lifting control rod 132 is hinged to the top of the column 131 through the first fitting portion 1321; one end of the lifting control rod 132 is hinged to one end of the first connecting member 133, the other end of the first connecting member 133 is hinged to one end of the second connecting member 134, and the other end of the second connecting member 134 is connected to the top of the positioning block 121.

[0061] In this embodiment, the drive unit 13 has two columns 131, which are arranged on the base 11 in a vertical direction around the area to be inspected 111. The area to be inspected 111 is fixedly connected to a ball track workbench, so that a workpiece with a non-complete spherical surface can be mounted on the ball track workbench with the side of the workpiece containing the groove facing upward. The two columns 131 are each formed with a slide rail 1311 in the vertical direction at one end facing the area to be inspected 111. Slide blocks 1211 are fixedly connected to opposite sides of the positioning block 121, so that the positioning block 121 can be respectively mounted on the two slide rails 1311 via the two slide blocks 1211. A lifting control rod 132 is hingedly connected to one of the columns 131, so that a first fitting portion 1321 formed in the middle of the lifting control rod 132 is movably mounted on the top of the column 131, thereby allowing the lifting control rod 132 to swing vertically relative to the column 131. The end of the lifting lever 132 that faces the side closest to the positioning block 121 is hinged to one end of the first connecting member 133, the other end of the first connecting member 133 is hinged to one end of the second connecting member 134, and the other end of the second connecting member 134 is detachably connected to the top of the positioning block 121. With the above-mentioned structural arrangement, the lifting lever 132 can be swung downward toward the end that faces away from the positioning block 121, so that the lifting lever 132 drives the first connecting member 133 and the second connecting member 134 to swing and move upward, thereby driving the positioning block 121 to move upward in the vertical direction via the slide rail 1311, thereby enabling the driving unit 13 to drive the detection unit 12 to move upward.

[0062] When it is necessary to detect the workpiece, the lifting operating rod 132 can be swung upward toward the end away from the positioning block 121, so that the lifting operating rod 132 drives the first connecting member 133 and the second connecting member 134 to swing and move downward, thereby driving the positioning block 121 to move downward in the vertical direction through the slide rail 1311, thereby realizing that the driving unit 13 drives the detection unit 12 to move downward.

[0063] In summary, through the above-mentioned structural setting, the detection area 111 to be detected is set on the base 11, so that the detection unit 12 of the detection mechanism is located above the detection area 111, and the detection unit 12 is driven by the driving unit 13 to move upward in the vertical direction, so that the workpiece can be placed in the detection area 111; wherein, the first ball track probe 1221 and the second ball track probe 1222 of the detection unit 12 are set at the bottom of the abutment 122, and the first detection head 1231 and the second detection head 1241 can be relatively moved away from or close to the abutment 122, and cooperate with the first ball track probe 1221 and the second ball track probe 1222 to place the workpiece. In the area to be inspected 111, by driving the inspection unit 12 into the accommodating groove of the workpiece, the first ball probe 1221 and the second ball probe 1222 are in contact with the arc portion, and the first inspection head 1231 and the second inspection head 1241 are in contact with the straight portion. The change in the size of the center distance of the two inspection heads in contact with the straight portion is used to determine the mathematical function relationship between the measurement value and the radius of the two ball probes and the radius of the two inspection heads, so as to quickly realize the center height of the connection position of the straight portion and the arc portion in the inner end face of the bell shell in the distance measurement. At the same time, it is also possible to measure non-complete spherical workpieces with different inner diameters and shapes, thereby improving the versatility of use of the inspection device.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0065] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A detection device for detecting a workpiece, characterized in that: include: A base is provided on the base, wherein an area to be inspected is provided on the base, and a positioning end surface is defined in the horizontal direction of the area to be inspected; A detection mechanism is fixed on a base, the detection mechanism comprising a detection unit and a driving unit for driving the detection unit to move in a vertical direction; the detection unit is located above the area to be detected, the detection unit comprises an abutment member, a first detection head, and a second detection head, a first ball track probe and a second ball track probe are provided at the bottom of the abutment member, the first ball track probe and the second ball track probe are symmetrically arranged along a first direction, the first detection head and the second detection head are symmetrically arranged along a second direction, the first detection head and the second detection head can be relatively far away from or close to the abutment member, and the first detection head and the second detection head are both located above the first ball track probe and the second ball track probe; Wherein, a first distance between the first detection head and the second detection head is greater than or equal to a second distance between the first ball track detection head and the second ball track detection head.

2. The detection device according to claim 1, wherein The detection unit also includes a positioning block, a first measuring piece and a second measuring piece. The abutment is connected to the bottom of the positioning block. The first end of the first measuring piece and the first end of the second measuring piece are both movably connected to the positioning block. The second end of the first measuring piece and the second end of the second measuring piece are both extended downward, and the first measuring piece and the second measuring piece are respectively located on opposite sides of the abutment along the second direction. The first measuring piece and the second measuring piece are respectively used to drive the first detection head and the second detection head so that they can be relatively far away from or close to the abutment.

3. The detection device according to claim 2, wherein: The abutment member includes a main body portion, which is connected to the bottom of the positioning block. A first extension portion and a second extension portion are respectively extended from opposite sides of the bottom end of the main body portion along a first direction. The first ball track probe is arranged on the first extension portion and away from one end of the side where the main body portion is located. The second ball track probe is arranged on the second extension portion and away from one end of the side where the main body portion is located.

4. The detection device according to claim 3, characterized in that A first limiting portion is provided on the top of the first extension portion at one end away from the main body portion and extends outwardly therefrom. The first limiting portion forms a first limiting channel along the second direction. A first limiting step is formed at one end of the first limiting channel away from the main body portion. The first detection head is movably disposed in the first limiting channel. The first limiting step is used to limit the displacement of the first detection head along the second direction. The first measuring member drives the first detection head to move toward the side where the first limiting step is located, so that part of the first detection head is exposed outside the first limiting channel.

5. The detection device according to claim 3, wherein: The second extending portion is provided with a second limiting portion extending outwardly from the top of one end thereof away from the main body portion, the second limiting portion forming a second limiting channel along the second direction, and a second limiting step forming at one end thereof away from the main body portion, the second detection head being movably disposed in the second limiting channel, and the second limiting step being used to limit the displacement of the second detection head moving along the second direction; The second measuring member drives the second detection head to move toward the side where the second limiting step is located, so that part of the second detection head is exposed outside the second limiting channel.

6. The detection device according to claim 4, characterized in that The first measuring member includes a first main body and a first abutting portion, wherein the top of the first main body is hingedly connected to the positioning block, and the first abutting portion extends along a second direction to the bottom of the first main body toward an end away from the main body, and the first abutting portion abuts against the first detection head; The detection unit also includes a first telescopic operating rod and a first elastic member, one end of the first elastic member is connected to the main body, and the other end of the first elastic member abuts against the first main body or the first abutting portion, one end of the first telescopic operating rod is fixed to the first main body, and the other end of the first telescopic operating rod is exposed outside the positioning block.

7. The detection device according to claim 5, characterized in that The second measuring member includes a second main body and a second abutting portion, wherein the top of the second main body is hingedly connected to the positioning block, and the second abutting portion extends along a second direction from the bottom of the second main body toward an end away from the main body, and the second abutting portion abuts against the second detection head; The detection unit also includes a second telescopic operating rod and a second elastic member, one end of the second elastic member is connected to the main body, and the other end of the second elastic member abuts against the second main body or the second abutting portion, one end of the second telescopic operating rod is fixed on the second main body, and the other end of the second telescopic operating rod is exposed outside the positioning block.

8. The detection device according to claim 1, wherein: The detection mechanism further includes a first sensor and a second sensor. The first sensor is used to measure the distance the first ball track probe moves in the vertical direction, and the second sensor is used to measure the distance between the first detection head and the second detection head.

9. The detection device according to claim 1, wherein: The workpiece is placed on the area to be inspected, and the workpiece has a receiving groove. The receiving groove is arranged opposite to the inspection unit. The inner surface of the receiving groove has a straight portion and an arc portion. The straight portion is located above the arc portion. The connection between the straight portion and the arc portion is smoothly transitioned. The height H between the connection between the straight portion and the arc portion and the positioning end face is in the range of: H=H1-H2+H3; Wherein, H1 is the height from the center of the first ball probe to the positioning end face when the detection unit rises to the highest point; H2 is the moving distance when the detection unit descends to the lowest point. At this time, the first ball track probe and the second ball track probe collide with each other at the arc part, and the first detection head and the second detection head collide with each other at the straight part. H3 is the height between the connection of the straight portion and the arc portion and the center of the first ball probe and the second ball probe, and H3 is obtained by the center distance M1 of the first ball probe and the second ball probe and the center distance M2 of the first detection head and the second detection head according to the first rule.

10. The detection device according to claim 9, wherein: The first rule is: ； Where R1 is the radius of the first and second detection heads, and R2 is the radius of the first and second ball track probes.

11. The detection device according to claim 2, wherein: The driving unit includes a column, a lifting operating rod, a first connecting member and a second connecting member. The column is connected to the base in the vertical direction, and a slide rail is formed in the vertical direction at one end of the column facing the side where the inspection area is located. The positioning block is connected with a slider, and the positioning block is movably connected to the slide rail through the slider; a first fitting portion is formed in the middle of the lifting operating rod, and the lifting operating rod is hinged to the top of the column through the first fitting portion; one end of the lifting operating rod is hinged to one end of the first connecting member, the other end of the first connecting member is hinged to one end of the second connecting member, and the other end of the second connecting member is connected to the top of the positioning block.

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