Length accurate detection device for bolt processing

Abstract

The utility model discloses a length accurate detection device used for bolt processing, comprising a main body positioning unit which comprises a processing measuring table and a support plate fixedly installed at one end of the upper side wall of the processing measuring table, and a driving motor fixedly installed on the support plate, an output shaft of the driving motor penetrates through the supporting plate to be fixedly connected with a three-jaw chuck, and a bolt is connected to the three-jaw chuck in a fastened mode. The fine measuring unit comprises a coarse thread screw rotationally connected with the center of the machining measuring table and a threaded block in threaded connection with the coarse thread screw, a strip-shaped opening matched with the coarse thread screw is formed in the machining measuring table in a penetrating mode, and the threaded block is transversely and slidably connected with the machining measuring table; a movable seat is fixedly connected to the top end of the threaded block through a connecting block, a fixing lug is fixedly installed at one end of the upper side wall of the movable seat, a dense thread screw is in threaded connection with the fixing lug, and the dense thread screw penetrates through the fixing lug and is fixedly connected with a large fluted disc. According to the utility model, the defect that the measurement error of the length of the bolt is large because the measuring plate is easy to extrude and deform with the bolt in the process of contacting with the bolt is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt detection, in particular to a precise length detection device for bolt processing. Background Art

[0002] Bolts are a type of fastener consisting of a head and a screw. They need to be used with nuts to fasten two parts with through holes. Bolts are indispensable in daily life and industrial production and manufacturing. Bolts are also called the rice of industry, which shows how widely they are used. After the processing and production of the bolts, in the process of quality inspection of the bolts, it is necessary to use the corresponding length detection device to detect the length of the bolts.

[0003] At present, in the field of bolt inspection, the length detection device for bolt processing uses a measuring plate that drives the measuring plate to abut against the tail end of the bolt to be inspected through a screw rod. At this time, the electronic display can show the length of the bolt. In this measurement method, the measuring plate is prone to be squeezed and deformed with the tail end of the bolt, which in turn causes a certain error in the measurement result of the bolt length, resulting in inaccurate measurement results. Therefore, it is necessary to design a precise length detection device for bolt processing to solve the above problem. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing device for accurately detecting the length of bolts, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a precise length detection device for bolt processing, which is suitable for solving the problem that the measuring plate is easily squeezed and deformed with the tail end of the bolt, which then leads to a certain error in the length measurement result of the bolt, resulting in inaccurate measurement results.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a device for accurately detecting the length of bolts for processing, comprising:

[0008] The main body positioning unit includes a processing and measuring table and a support plate fixedly installed on one end of the side wall of the processing and measuring table, a driving motor is fixedly installed on the support plate, an output shaft of the driving motor passes through the support plate and is fixedly connected to a three-jaw chuck, and a bolt is fastened to the three-jaw chuck;

[0009] A fine measuring unit comprises a coarse-thread screw rotatably connected to the center of a processing and measuring platform and a threaded block threadedly connected to the coarse-thread screw, a strip opening matching the coarse-thread screw being provided through the processing and measuring platform, and the threaded block being laterally slidably connected to the processing and measuring platform, a moving seat being fixedly connected to the top of the threaded block through a connecting block, a fixing ear being fixedly installed at one end of an upper side wall of the moving seat, a dense-thread screw being threadedly connected to the fixing ear, a large toothed disc being fixedly connected to the dense-thread screw through the fixing ear, a small tooth column meshing with the large toothed disc being rotatably connected to the fixing ear, a measuring plate slidably connected to the moving seat being threadedly connected to the dense-thread screw, and a liquid crystal display being installed on the measuring plate.

[0010] As a preferred solution of the device for accurately detecting the length of bolts in the utility model, a sealing plate is embedded in one end of the upper opening of the strip-shaped opening close to the support plate, and the lateral length of the sealing plate is greater than the length of the bolt.

[0011] As a preferred solution of the device for accurately detecting the length of bolts used in the utility model, a plurality of groups of evenly distributed reinforcing ribs are fixedly connected between the lower side wall of the support plate and the upper side wall of the processing and measuring platform, and the plurality of groups of reinforcing ribs are arranged in a triangle.

[0012] As a preferred solution of the device for accurately detecting the length of bolts processed according to the utility model, the lower side wall of the movable seat is fixedly connected with a symmetrically positioned supporting slide block, and the upper side wall of the processing and measuring table is provided with a supporting groove matching the supporting slide block.

[0013] As a preferred solution of the device for accurately detecting the length of bolts processed according to the utility model, a support ear is fixedly mounted on one end of the upper side wall of the movable seat away from the fixed ear, and one end of the dense thread screw away from the large toothed disc passes through the support ear and is threadedly connected to the support ear.

[0014] As a preferred solution of the device for accurately detecting the length of bolts processed according to the utility model, the measuring plate is slidably connected to the movable seat through corresponding transverse slide blocks and transverse grooves, and the diameter of the small tooth column is one quarter to one third of the diameter of the large tooth disc.

[0015] The beneficial effects of the utility model are as follows: when it is necessary to detect the length of the bolt, the coarse-thread screw is rotated forward, and the threaded block threadedly connected thereto drives the moving seat and the measuring plate to move toward the bolt. When the measuring plate is about to approach the rear end of the bolt, the coarse-thread screw is stopped and the small tooth column is rotated. When the small tooth column rotates many circles, the large tooth plate drives the dense-thread screw to rotate a certain angle, and the measuring plate threadedly connected to the dense-thread screw moves toward the bolt accordingly. When the measuring plate abuts against the bolt, the liquid crystal display can accurately display the length of the bolt, which effectively solves the defect that the measuring plate is easily squeezed and deformed with the bolt during contact with the bolt, thereby causing a large error in measuring the bolt length. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of a device for accurately detecting the length of bolts used in the present utility model;

[0018] Figure 2 The utility model is a schematic diagram of the coordinated structure of a driving motor, a moving seat and a measuring plate of a device for accurately detecting the length of bolts used in processing.

[0019] Description of the drawings: 100 main body positioning unit, 101 processing and measuring table, 102 support plate, 103 reinforcing ribs, 104 drive motor, 105 three-jaw chuck, 200 fine measuring unit, 201 coarse-thread screw, 202 threaded block, 203 moving seat, 204 supporting slider, 205 fixing ear, 206 fine-thread screw, 207 small tooth column, 208 large tooth disc, 209 measuring plate, 210 LCD display, 211 supporting ear. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] Reference Figure 1-Figure 2 , which is an embodiment of the utility model, provides a precise length detection device for bolt processing, including: a main body positioning unit 100 and a fine measurement unit 200.

[0025] Among them, the main body positioning unit 100 includes a processing and measuring table 101 and a support plate 102 fixedly installed at one end of the upper side wall of the processing and measuring table 101. A plurality of groups of uniformly distributed reinforcing ribs 103 are fixedly connected between the lower side wall of the support plate 102 and the upper side wall of the processing and measuring table 101. The plurality of groups of reinforcing ribs 103 are all arranged in a triangle. The arrangement of the reinforcing ribs 103 improves the stability of the connection between the support plate 102 and the processing and measuring table 101, and effectively solves the defect that stress concentration and cracks are prone to occur at the connection between the support plate 102 and the processing and measuring table 101. A driving motor 104 is fixedly installed on the supporting plate 102. The output shaft of the driving motor 104 passes through the supporting plate 102 and is fixedly connected with a three-jaw chuck 105. The three-jaw chuck 105 is fastened with bolts. The driving motor and the three-jaw chuck 105 are commonly used driving sources and clamping and positioning components, which are often used in bolt processing. The specific structures and working principles of the two are not described in detail here.

[0026] The fine measurement unit 200 includes a coarse-threaded screw 201 rotatably connected to the center of the processing and measuring platform 101 and a threaded block 202 threadedly connected to the coarse-threaded screw 201. The processing and measuring platform 101 is provided with a strip-shaped opening matching the coarse-threaded screw 201. A sealing plate is inlaid at one end of the upper opening of the strip-shaped opening close to the support plate 102. The lateral length of the sealing plate is greater than the length of the bolt. The setting of the sealing plate effectively solves the problem of waste chips generated during the bolt processing adhering to the thread groove of the coarse-threaded screw 201 and causing The defect of the threaded block 202 being inconvenient to move on the coarse-threaded screw 201 is solved, and the threaded block 202 is connected to the processing and measuring platform 101 in a transverse sliding manner. The top of the threaded block 202 is fixedly connected to a moving seat 203 through a connecting block, and a symmetrical support slider 204 is fixedly connected to the lower side wall of the moving seat 203, and a support slide groove matching the support slider 204 is provided on the upper side wall of the processing and measuring platform 101. The setting of the support slider 204 and the support slide groove can support the moving seat 203 and the structure thereon, and share the pressure on the connecting block;

[0027] A fixing ear 205 is fixedly installed on one end of the upper side wall of the movable seat 203, and a dense-threaded screw 206 is threadedly connected to the fixing ear 205. The dense-threaded screw 206 penetrates the fixing ear 205 and is fixedly connected to a large toothed disc 208. A supporting ear 211 is fixedly installed on the end of the upper side wall of the movable seat 203 away from the fixing ear 205. The end of the dense-threaded screw 206 away from the large toothed disc 208 penetrates the supporting ear 211 and is threadedly connected to the supporting ear 211. The setting of the supporting ear 211 can effectively support the end of the dense-threaded screw 206 away from the large toothed disc 208, thereby ensuring that the measuring plate 209 can stably move along the dense-threaded screw 206. A small tooth column 207 meshing with the large toothed disc 208 is rotatably connected to the fixing ear 205, and the measuring plate 209 is connected to the movable seat 203. It is slidably connected through the corresponding transverse slider and transverse groove, and the diameter of the small tooth column 207 is one-fourth to one-third of the diameter of the large tooth plate 208. In this way, when the small tooth column 207 rotates many times, the large tooth plate 208 drives the dense threaded screw 206 to rotate a certain angle, thereby improving the accuracy of the lateral movement of the measuring plate 209. The dense threaded screw 206 is threadedly connected with a measuring plate 209 that is slidably connected to the moving seat 203. A liquid crystal display 210 is installed on the measuring plate 209. When the measuring plate 209 is in contact with the tail of the bolt, the liquid crystal display 210 can accurately display the length of the bolt. Its working principle is similar to that of a height measuring instrument. This method of measuring length is widely used in real life. Therefore, its working principle is not introduced in detail here.

[0028] During use, when it is necessary to detect the bolt length, the coarse-threaded screw 201 is rotated forward, and the threaded block 202 threadedly connected thereto drives the moving seat 203 and the measuring plate 209 to move toward the bolt. When the measuring plate 209 is about to approach the tail end of the bolt, the coarse-threaded screw 201 is stopped and the small tooth column 207 is rotated. When the small tooth column 207 rotates many times, the large tooth plate 208 drives the dense-threaded screw 206 to rotate a certain angle, and the measuring plate 209 threadedly connected to the dense-threaded screw 206 moves toward the bolt accordingly. When the measuring plate 209 is against the bolt, the LCD display 210 can accurately display the length of the bolt, which effectively solves the defect that the measuring plate 209 is easily squeezed and deformed with the bolt during contact with the bolt, thereby causing a large error in measuring the bolt length.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for accurately detecting the length of bolts, characterized in that: include: A main body positioning unit (100) comprises a processing and measuring table (101) and a support plate (102) fixedly mounted on one end of an upper side wall of the processing and measuring table (101), a driving motor (104) fixedly mounted on the support plate (102), an output shaft of the driving motor (104) passing through the support plate (102) and fixedly connected to a three-jaw chuck (105), and a bolt fastened to the three-jaw chuck (105); The fine measurement unit (200) comprises a coarse-threaded screw (201) rotatably connected to the center of a processing and measuring platform (101) and a threaded block (202) threadedly connected to the coarse-threaded screw (201); a strip-shaped opening matching the coarse-threaded screw (201) is provided through the processing and measuring platform (101); the threaded block (202) is slidably connected to the processing and measuring platform (101) in a transverse direction; a moving seat (203) is fixedly connected to the top of the threaded block (202) via a connecting block; an upper side wall of the moving seat (203) is provided with a A fixing ear (205) is fixedly installed at one end, a dense threaded screw (206) is threadedly connected to the fixing ear (205), the dense threaded screw (206) passes through the fixing ear (205) and is fixedly connected to a large toothed disc (208), a small tooth column (207) meshing with the large toothed disc (208) is rotatably connected to the fixing ear (205), a measuring plate (209) slidably connected to the moving seat (203) is threadedly connected to the dense threaded screw (206), and a liquid crystal display screen (210) is installed on the measuring plate (209).

2. The device for accurately detecting the length of bolts according to claim 1, characterized in that: A blocking plate is inlaid at one end of the upper opening of the strip-shaped opening close to the support plate (102), and the transverse length of the blocking plate is greater than the length of the bolt.

3. The device for accurately detecting the length of bolts according to claim 1, characterized in that: A plurality of groups of evenly distributed reinforcing ribs (103) are fixedly connected between the lower side wall of the support plate (102) and the upper side wall of the processing and measuring platform (101), and the plurality of groups of reinforcing ribs (103) are all arranged in a triangle shape.

4. The device for accurately detecting the length of bolts according to claim 1, characterized in that: A symmetrically positioned supporting slide block (204) is fixedly connected to the lower side wall of the movable seat (203), and a supporting sliding groove matching the supporting slide block (204) is provided on the upper side wall of the processing and measuring platform (101).

5. The device for accurately detecting the length of bolts according to claim 1, characterized in that: A support ear (211) is fixedly mounted on one end of the upper side wall of the movable seat (203) away from the fixed ear (205), and one end of the dense threaded screw (206) away from the large toothed disc (208) passes through the support ear (211) and is threadedly connected to the support ear (211).

6. The device for accurately detecting the length of bolts according to claim 1, characterized in that: The measuring plate (209) is slidably connected to the moving seat (203) via corresponding transverse sliding blocks and transverse sliding grooves, and the diameter of the small tooth column (207) is one quarter to one third of the diameter of the large toothed disc (208).

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