Processing positioning device and processing system for inspection block

Abstract

The utility model discloses a processing and positioning device and a processing system for an inspection block. The processing and positioning device for the inspection block comprises a clamp body, a workpiece mounting groove is formed in the clamp body; a to-be-processed inspection block blank is placed in the workpiece mounting groove; the front end of the clamp body is provided with a first compression screw which is longitudinally distributed; the inspection block blank piece is located right behind the first compression screw; the right end of the clamp body is provided with a screw sleeve; the thread sleeve is in threaded connection with a second compression screw which is vertically distributed; the inspection block blank is located right below the second compression screw; two first positioning pins are vertically arranged at the rear end of the clamp body in a penetrating manner; a second positioning pin is vertically arranged on the front side of the clamp body in a penetrating manner; and the front side and the rear side of the inspection block blank are respectively contacted with the second positioning pin and the first positioning pin. The positioning device can conveniently and reliably position the blank of the inspection block, ensures the positioning accuracy, is favorable for further processing the vertical through hole of the workpiece, and ensures the processing accuracy.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a machining positioning device and machining system for an inspection block. Background Technology

[0002] A switch machine is an important signaling infrastructure device used to reliably change the position of a turnout, change the direction of the turnout, lock the turnout switch rail, and reflect the position of the turnout.

[0003] See Figures 5a to 5b , Figures 6a to 6b As shown, inspection block 1 is a key component of the indicator rod assembly in the switch machine product.

[0004] The finished, processed inspection block 1 is a thin plate-like part with an F-shaped shape. It has a workpiece transverse positioning surface 101 on its rear side, a workpiece longitudinal positioning surface 102 on the left side of the central protrusion 100 at its front end, a workpiece right end face 103 on its right end, a workpiece vertical through hole 104 with a diameter of D on the front side near the workpiece right end face 103, a workpiece left end face 105 on the left side of the inspection block 1, a workpiece lower end face 106 on the lower side of the inspection block 1, and a workpiece upper end face 107 on the upper side of the inspection block 1.

[0005] For inspection block 1, the positional machining accuracy of the vertical through hole 104 on it directly affects the assembly accuracy of inspection block 1 and the smoothness of the overall operation of the switch machine.

[0006] See also Figures 7a to 7b , Figures 8a to 8b As shown, in order to machine the workpiece vertical through hole 104 on the inspection block blank 1-0 to obtain the finished inspection block 1 (the inspection block blank 1-0 is basically the same as the finished inspection block 1, the only difference is that there is no workpiece vertical through hole 104, and the rest are the same), the processing requirements are: it is necessary to use the distance H from the center point of the workpiece vertical through hole 104 to the workpiece transverse positioning surface 101, and the distance L from the center point of the workpiece vertical through hole 104 to the workpiece longitudinal positioning surface 102 for positioning, so as to accurately and reliably determine the position of the workpiece vertical through hole 104 to be processed, and then perform the machining operation of the workpiece vertical through hole 104.

[0007] Therefore, the distance H from the center point of the vertical through hole 104 of the workpiece to the transverse positioning surface 101 of the workpiece, and the distance L from the center point of the vertical through hole 104 of the workpiece to the longitudinal positioning surface 102 of the workpiece, are key parameters when machining the vertical through hole 104 of the workpiece on the inspection block blank 1-0.

[0008] However, since the vertical through hole 104 of the workpiece to be processed is close to the right end face 103 of the workpiece, the vertical plane where the right end face 103 of the workpiece is located will be covered by the processing device after the drill bushing is installed. It is impossible to position the longitudinal positioning surface 102 of the workpiece by pushing the right end face 103 of the workpiece, so it is impossible to achieve accurate positioning of the longitudinal positioning surface 102 of the workpiece. Consequently, it is impossible to accurately determine the distance L from the center point of the vertical through hole 104 of the workpiece to the longitudinal positioning surface 102 of the workpiece, which affects the processing accuracy of the vertical through hole 104 of the workpiece. The poor processing accuracy of the workpiece ultimately leads to processing failure, forming scrap, and causing serious economic losses.

[0009] Therefore, a technology needs to be designed that can solve the above technical problems. Utility Model Content

[0010] The purpose of this invention is to address the technical deficiencies of existing technologies by providing a processing and positioning device and processing system for inspection blocks.

[0011] Therefore, this utility model provides a processing and positioning device for an inspection block, including a clamping body;

[0012] The horizontally placed fixture is provided with a workpiece mounting slot;

[0013] The workpiece mounting slot is used to place the blank inspection block to be processed.

[0014] The front end of the clamping body is provided with longitudinally distributed first clamping screws;

[0015] Inspect the blank block – located directly behind the first clamping screw;

[0016] A threaded sleeve is provided on the upper right end of the clamping body;

[0017] The threaded sleeve is threadedly connected to the vertically distributed second clamping screw;

[0018] Inspect the blank block – located directly below the second clamping screw;

[0019] The rear end of the clamp body is vertically perforated by two first positioning pins;

[0020] A second positioning pin is vertically inserted through the front side of the clamp body;

[0021] Check that the front and rear sides of the blank part are in contact with the second locating pin and the first locating pin, respectively.

[0022] In addition, this utility model also provides a processing system for inspection blocks, including the inspection block processing and positioning device as described above, and a bench drill.

[0023] A bench drill is used to machine a vertical through hole in a workpiece by using a drill bit on it to machine a blank workpiece located directly below the drill bushing hole.

[0024] As can be seen from the technical solution provided by this utility model above, compared with the prior art, this utility model provides a processing positioning device and processing system for inspection blocks. The structure is scientifically designed and can conveniently and reliably position the inspection block blank to be processed, ensuring the positioning accuracy. This facilitates the accurate processing of the vertical through hole of the workpiece on the inspection block blank, ensuring the processing accuracy of the vertical through hole, and has significant practical significance. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of a processing and positioning device for an inspection block provided by this utility model when clamping the workpiece to be processed (i.e., the inspection block blank).

[0026] Figure 2a This is a top view of the processing and positioning device for an inspection block provided by this utility model when it is in the processing state;

[0027] Figure 2b It is along Figure 2a A cross-sectional view of line AA shown;

[0028] Figures 3a to 3e These are, respectively, the rear view, right view, left view, bottom view and top view of the inspection block processing and positioning device provided by this utility model when the inspection block blank to be processed is clamped;

[0029] Figure 4 This is a three-dimensional structural diagram of the inspection block processing and positioning device provided by this utility model when the inspection block blank is not clamped.

[0030] Figure 5a A three-dimensional structural diagram of an inspection block to be processed into a finished product. Figure 1 ;

[0031] Figure 5b A three-dimensional structural diagram of a test block to be processed into a usable piece;

[0032] Figure 6a A top view of a finished inspection block;

[0033] Figure 6b Left view of a check block to be processed and completed;

[0034] Figure 7a A three-dimensional structural diagram of the inspection block blank for the vertical through hole of the workpiece to be processed. Figure 1 ;

[0035] Figure 7b Schematic diagram of the three-dimensional structure of the inspection block blank for the vertical through hole of the workpiece to be processed (II);

[0036] Figure 8a A top view of the blank of the inspection block for the vertical through hole of the workpiece to be processed;

[0037] Figure 8b Left view of the blank of the inspection block for the vertical through hole of the workpiece to be processed;

[0038] Figure 9a This is a partial cross-sectional view of the clamping body in the processing and positioning device for an inspection block provided by this utility model;

[0039] Figure 9b It is along Figure 9a A cross-sectional view of the BB line shown;

[0040] Figures 10a to 10e These are, respectively, the rear view, right view, left view, bottom view, and top view of the clamping body in the processing and positioning device for an inspection block provided by this utility model;

[0041] Figure 11 This is a cross-sectional view of the drill bushing in a processing and positioning device for an inspection block provided by this utility model;

[0042] Figure 12 This is a schematic diagram of the structure of the first clamping screw in the processing and positioning device for an inspection block provided by this utility model;

[0043] Figure 13 This is a cross-sectional view of the threaded sleeve in the processing and positioning device for an inspection block provided by this utility model;

[0044] Figure 14 This is a schematic diagram of the structure of the first positioning pin in a processing and positioning device for an inspection block provided by this utility model;

[0045] Figure 15 This is a top view of a clamping body assuming it is in a state without an arc table;

[0046] In the diagram, 1 represents the inspection block; 1-0 represents the inspection block blank.

[0047] 100. Central protrusion; 101. Workpiece transverse positioning surface; 102. Workpiece longitudinal positioning surface; 103. Workpiece right end face; 104. Workpiece vertical through hole; 105. Workpiece left end face; 106. Workpiece lower end face; 107. Workpiece upper end face.

[0048] 2. Folding body;

[0049] 201. Workpiece mounting groove; 202. Lateral locating pin hole; 203. Longitudinal locating pin hole; 204. Screw sleeve tight fit hole; 205. Screw sleeve countersunk hole.

[0050] 206. Drill bushing mounting hole; 207. Chip removal through hole; 208. Front end face; 209. Arc stage; 210. Left end face of clamp body;

[0051] 211. U-shaped opening; 212. Lower positioning groove surface; 213. Clamping screw hole;

[0052] 3. Drill bushing; 301. Drill bushing hole; 302. Drill bushing mounting shaft;

[0053] 41. First clamping screw; 42. Second clamping screw;

[0054] 401. Hexagonal head; 402. Threaded part; 403. Clamping part;

[0055] 5. Screw sleeve; 501. Threaded hole of the screw sleeve; 502. Shoulder; 503. Shaft of the screw sleeve;

[0056] 61. First locating pin; 62. Second locating pin. Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0058] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0059] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] See Figure 1 , Figures 2a to 2b , Figures 3a to 3e , Figure 4 , Figures 5a to 5b , Figures 6a to 6b , Figures 7a to 7b , Figures 8a to 8b , Figures 9a to 9b , Figures 10a to 10e , Figures 11 to 15 This utility model provides a processing and positioning device for an inspection block, including a clamping body;

[0062] The horizontally placed fixture 2 is provided with a workpiece mounting groove 201;

[0063] The workpiece mounting slot 201 is used to place the inspection block blank 1-0 to be processed;

[0064] The front end of the clamping body 2 is provided with longitudinally distributed first clamping screws 41;

[0065] The inspection block blank 1-0 is located directly behind the first clamping screw 41;

[0066] A screw sleeve 5 is provided on the upper right end of the clamp body 2;

[0067] The threaded sleeve 5 is threadedly connected to the vertically distributed second clamping screw 42;

[0068] Check that the blank 1-0 is located directly below the second clamping screw 42;

[0069] Two first positioning pins 61 are vertically through the rear end of the clamp body 2;

[0070] A second positioning pin 62 is vertically inserted through the front side of the clamp body 2;

[0071] Check that the front and rear sides of the blank 1-0 are in contact with the second positioning pin 62 and the first positioning pin 61, respectively.

[0072] In this utility model, specifically, the rear end of the first clamping screw 41 is used to abut (i.e., to make tight contact) with the front end of the inspection block blank 1-0 located in the workpiece mounting groove 201.

[0073] The lower end of the second clamping screw 42 is used to abut against the upper end face 107 of the workpiece on the upper side of the inspection block blank 1-0 (i.e., to make tight contact).

[0074] The front side of the first locating pin 61 is used to make tight contact (i.e. abut) with the workpiece transverse locating surface 101 on the rear side of the inspection block blank 1-0.

[0075] The right side of the second locating pin 62 is used to abut (i.e., to make tight contact) against the longitudinal locating surface 102 of the workpiece on the left side of the central protrusion 100 at the front end of the inspection block blank 1-0.

[0076] In this utility model, for specific implementation, see [link to relevant documentation]. Figure 9a , Figure 9b , Figure 10b , Figure 10c As shown, the fixture body 2 is provided with workpiece mounting grooves 201 that are distributed horizontally (i.e., traversing the left and right end faces);

[0077] On the left and right sides of the rear end of the clamp body 2, there is a vertically distributed transverse positioning pin hole 202;

[0078] The transverse positioning pin hole 202 is directly connected to the rear end of the workpiece mounting groove 201;

[0079] In other words, for this utility model, two transverse positioning pin holes 202 are provided, which communicate with the workpiece mounting groove 201 and penetrate the upper and lower end faces of the clamping body 2.

[0080] The front end of the clamp body 2 is provided with a vertically distributed longitudinal positioning pin hole 203;

[0081] The longitudinal positioning pin hole 203 is directly connected to the front end of the workpiece mounting groove 201;

[0082] A vertically distributed first positioning pin 61 is installed in the transverse positioning pin hole 202;

[0083] A vertically distributed second positioning pin 62 is installed in the longitudinal positioning pin hole 203;

[0084] It should be noted that the longitudinal positioning pin hole 203 is located on the side near the front end face 208 of the fixture body 2.

[0085] It should be noted that in this utility model, the shape, structure and size of the first positioning pin 61 are exactly the same as those of the second positioning pin 62.

[0086] In practice, the diameters of the two transverse positioning pin holes 202 are equal to the diameter of the second positioning pin 62;

[0087] The diameter of the longitudinal positioning pin hole 203 is equal to the diameter of the first positioning pin 61.

[0088] In practice, the two lateral positioning pin holes 202 are symmetrically distributed from left to right.

[0089] The line connecting the center points of the two transverse locating pin holes 202 intersects perpendicularly with the longitudinal central axis of the longitudinal locating pin hole 203 (i.e., the longitudinal straight line passing through the center point of the longitudinal locating pin hole 203).

[0090] In other words, in the lateral direction, the longitudinal locating pin hole 203 is located between the two lateral locating pin holes 202.

[0091] In specific implementation, the distance E′ between the rightmost generatrix of the longitudinal positioning pin hole 203 (i.e., the longitudinally distributed straight line tangent to the longitudinal positioning pin hole 203) and the left end face 210 of the clamping body 2 on the left side is smaller than the distance E between the longitudinal positioning surface 102 of the workpiece and the left end face 105 of the workpiece of the inspection block blank 1-0, preferably 5mm smaller, so as to facilitate the ejection of the workpiece after processing. Because of this design, the left end face 105 of the workpiece of the inspection block blank 1-0 can protrude to the left of the left end face 210 of the clamping body 2 on the left side, so that the left side of the inspection block blank 1-0 is exposed outside the clamping body 2.

[0092] In this utility model, specifically, the upper right end of the clamping body 2 is provided with a screw sleeve fitting hole 204 and a screw sleeve countersunk hole 205;

[0093] A threaded sleeve 5 is provided in the stepped hole formed by the threaded sleeve tight fit hole 204 and the threaded sleeve countersunk hole 205;

[0094] A chip removal through hole 207 is provided at the lower right end of the clamp body 2;

[0095] The upper and lower sides of the workpiece mounting groove 201 are connected to the countersunk hole 205 of the threaded sleeve and the chip removal through hole 207, respectively.

[0096] It should be noted that the threaded sleeve fitting hole 204 and the threaded sleeve countersunk hole 205 are located near the center of the fixture body 2.

[0097] In specific implementation, the center position of the threaded sleeve 5 is provided with a vertically distributed threaded hole 501;

[0098] The lower part of the threaded sleeve 5 is provided with a shoulder 502;

[0099] The upper part of the threaded sleeve 5 is provided with a threaded sleeve shaft 503;

[0100] The threaded hole 501 of the screw sleeve is threadedly connected to the second clamping screw 42.

[0101] Furthermore, the diameter of the shoulder 502 is larger than the diameter of the threaded sleeve shaft 503, preferably by 5 mm;

[0102] Furthermore, the diameter and height of the shoulder 502 are smaller than the diameter and depth of the countersunk hole 205 of the threaded sleeve, preferably 1 mm smaller, to facilitate installation and achieve clearance fit.

[0103] Furthermore, the size of the threaded sleeve shaft 503 of the threaded sleeve 5 corresponds to and matches the size of the threaded sleeve tight-fitting hole 204, achieving a tight fit, that is, consistent size.

[0104] In practice, the countersunk hole 205 of the threaded sleeve is located directly below the tight fitting hole 204 of the threaded sleeve and the two are connected.

[0105] The bottom of the countersunk hole 205 of the threaded sleeve is connected to the upper side of the workpiece mounting groove 201;

[0106] The upper side of the chip removal through hole 207 is connected to the lower side of the workpiece mounting groove 201;

[0107] In practice, the center points of the threaded sleeve fitting hole 204 and the threaded sleeve countersunk hole 205 are located on the same vertical central axis.

[0108] It should be noted that, for this utility model, the clamp body 2 is provided with a threaded sleeve tight fitting hole 204 and a threaded sleeve countersunk hole 205 at the upper part of the workpiece mounting groove 201, which are located slightly to the right of the center, and a chip removal through hole 207 is provided at the lower part of the workpiece mounting groove 201 at the same center position.

[0109] In practice, the diameter of the chip removal through hole 207 is the same as the diameter of the countersunk hole 205 of the threaded sleeve.

[0110] In this utility model, specifically, the center of the arc platform 209 is provided with vertically distributed drill sleeve mounting holes 206;

[0111] A drill bushing 3 is provided in the drill bushing mounting hole 206;

[0112] It should be noted that, in this utility model, the bottom opening of the drill bushing 3 is located directly above the workpiece's vertical through hole 104, meaning it is positioned vertically in direct correspondence. See [reference needed]. Figure 11 As shown, the drill sleeve 3 has a hollow structure with openings at both the top and bottom.

[0113] In specific implementation, the drill bushing 3 includes a drill bushing mounting shaft 302 and a drill bushing hole 301.

[0114] A vertically penetrating (i.e., penetrating from top to bottom) drill bushing hole 301 is provided at the center of the drill bushing mounting shaft 302.

[0115] In specific implementation, the lower part of the clamping body 2 is provided with a U-shaped opening 211 that is concentric with the drill sleeve mounting hole 206 and opens to the right, which is used to prevent the drill bit on the bench drill from damaging the device of this utility model during the machining of the vertical through hole 104 of the workpiece.

[0116] In this utility model, specifically, the front end of the clamping body 2 is provided with longitudinally distributed clamping screw holes 213;

[0117] The rear end of the clamping screw hole 213 is connected to the front side of the workpiece mounting groove 201;

[0118] The clamping screw hole 213 is threadedly connected to the first clamping screw 41;

[0119] The rear end of the first clamping screw 41 abuts against (i.e., in tight contact) the front side of the inspection block blank 1-0 located in the workpiece mounting groove 201 (specifically, the front end face of the central protrusion 100).

[0120] It should be noted that, for this utility model, the front end face 208 of the clamping body 2 is provided with a clamping screw hole 213 that penetrates the workpiece mounting groove 201 in the middle.

[0121] In specific implementation, the front end of the first clamping screw 41 is provided with a hexagonal head 401;

[0122] The first clamping screw 41 has a threaded portion 402 in the middle;

[0123] The rear end of the first clamping screw 41 has a clamping part 403;

[0124] The clamping part 403 of the first clamping screw 41 abuts against the front face of the central protrusion 100 of the inspection block blank 1-0 located in the workpiece mounting groove 201 (i.e., tight contact).

[0125] It should be noted that the front end of the first clamping screw 41 is provided with a hexagonal head 401 that is easy to rotate, the middle part is provided with a threaded part 402, and the tail part is provided with a clamping part 403.

[0126] It should be noted that in this utility model, the shape, structure and size of the first clamping screw 41 are exactly the same as those of the second clamping screw 42.

[0127] In this utility model, for specific implementation, see [link to relevant documentation]. Figure 10b , Figure 10c As shown, the lower groove surface (i.e. the bottom surface of the inner cavity, which is a horizontally distributed plane) of the workpiece mounting groove 201 is the lower positioning groove surface 212.

[0128] The second clamping screw 42 is used to press down the inspection block blank 1-0 in the workpiece mounting groove 201, so that the lower end face 106 of the workpiece on the lower side of the inspection block blank 1-0 abuts against the lower positioning groove surface 212 of the workpiece mounting groove 201 (i.e., tight contact).

[0129] In this utility model, specifically, the center point of the workpiece mounting groove 201 is the center point of the clamping body 2.

[0130] For specific implementation details, see [link to implementation details]. Figure 8b , Figure 9b As shown, the height dimension A′ of the workpiece mounting groove 201 is larger than the height dimension A of the inspection block blank 1-0, preferably 2 mm larger, so as to facilitate the horizontal placement of the inspection block blank 1-0 from the right side of the clamping body 2 into the workpiece mounting groove 201.

[0131] In this utility model, specifically, the distance between the center point of the drill bushing hole 301 of the drill bushing 3 and the center point of the longitudinal positioning pin hole 203 in the longitudinal (i.e. front and back) vertical plane is equal to the sum of the distance L from the center point of the workpiece vertical through hole 104 on the inspection block 1 of the finished product to the longitudinal positioning surface 102 of the workpiece and the radius of the longitudinal positioning pin hole 203.

[0132] In this utility model, specifically, the distance between the center point of the drill bushing hole 301 of the drill bushing 3 and the center point of the transverse positioning pin hole 202 located in the transverse (i.e. left and right) vertical plane is equal to the sum of the distance H from the center point of the workpiece vertical through hole 104 on the inspection block 1 of the finished product to the workpiece transverse positioning surface 101 and the radius of the transverse positioning pin hole 202.

[0133] Based on the above design, this utility model allows the inspection block blank 1-0 to be clamped after the device of this utility model completes the clamping operation, so that the drill bushing hole 301 of the drill bushing 3 is located directly above the position to be processed of the vertical through hole 104 of the workpiece, that is, the upper and lower parts are set in a direct correspondence, so as to accurately determine the processing position of the vertical through hole 104 of the workpiece to be processed on the inspection block blank 1-0, and then perform the processing operation.

[0134] Based on the inspection block processing and positioning device provided by the present invention, the present invention also provides an inspection block processing system, which includes the inspection block processing and positioning device as described above, and a bench drill.

[0135] A bench drill is used to perform machining operations on the inspection block blank 1-0, located directly below the drill sleeve 3 (specifically, the drill sleeve hole 301), thereby obtaining the vertical through hole 104 of the workpiece.

[0136] In this utility model, specifically, a bench drill, also known as a benchtop drilling machine, refers to a small drilling machine that can be placed on a workbench with the spindle and drill bits arranged vertically on the spindle. It is a mature existing machining equipment and will not be described in detail here.

[0137] To better understand the technical solution of this utility model, the working process of this utility model is described below.

[0138] First, the worker places the device of this utility model on the workbench, holds the right end face 103 of the inspection block blank 1-0, and inserts the inspection block blank 1-0 to be processed into the device from the left end face 105 of the workpiece through the workpiece mounting groove 201 on the right end face of the clamping body 2 of this utility model, so that the longitudinal positioning surface 102 of the inspection block blank 1-0 abuts (i.e., makes tight contact) with the second positioning pin 62 set in the longitudinal positioning pin hole 203, thereby achieving the positioning of the longitudinal positioning surface 102 of the workpiece.

[0139] It should be noted that, for this utility model, when the worker holds the inspection block blank 1-0, the workpiece to be processed, and inserts it into the workpiece mounting slot 201 of the fixture from the right side of the clamping body 2, pushing it to the deepest point (i.e., pushing it to the left until it can no longer be pushed), it can ensure that the workpiece positioning surface 102 abuts against the second positioning pin 62. Because this workpiece (i.e., the inspection block blank 1-0) is small in size and the processing force during cutting is not large, the two clamping points applied by the first clamping screw 41 and the second clamping screw 42 to the inspection block blank 1-0 can meet the clamping requirements of the workpiece.

[0140] Then, tighten the first clamping screw 41 located on one side of the front end face 208 of the fixture body 2, so that the workpiece transverse positioning surface 101 on the rear side of the inspection block blank 1-0 abuts against the first positioning pin 61 installed in the two transverse positioning pin holes 202, thereby achieving the positioning of the workpiece transverse positioning surface 101.

[0141] Then, the second clamping screw 42 located in the screw sleeve 5 is further tightened so that the lower end face 106 of the workpiece on the lower side of the inspection block blank 1-0 abuts against the lower positioning groove surface 212 at the bottom of the workpiece mounting groove 201, thereby completing the positioning of the lower end face 106 of the workpiece, thus completing the positioning and clamping of the device of this utility model with the workpiece to be processed (i.e., the inspection block blank 1-0).

[0142] Then, start the bench drill and align the drill bit on the bench drill with the drill bushing hole 301 of the drill bushing 3. Under the guidance of the drill bushing 3, the position on the inspection block blank 1-0 located directly below the drill bushing hole 301 is taken as the position of the workpiece vertical through hole 104 that needs to be further processed. Then, process the workpiece vertical through hole 104 to obtain the workpiece vertical through hole 104, and finally obtain the finished inspection block 1 with the workpiece vertical through hole 104 processed.

[0143] It should be noted that by moving the device of this invention, which carries the workpiece to be processed (inspection block blank 1-0), aligning the drill bit on the bench drill with the drill bushing hole 301 on the drill bushing 3, starting the bench drill, and controlling the operating handle, the drill bit cuts downwards along the drill bushing 3 into the workpiece until it penetrates the workpiece, thus obtaining the vertical through hole 104. During the cutting process, the drill bushing 3 serves to position and guide the drill bit.

[0144] After completing the machining of the vertical through hole 104 of the workpiece, loosen the first clamping screw and the second clamping screw, and push the left end face 105 of the workpiece extending from the left end of the device from left to right to remove the machined inspection block 1. By repeating the above steps, the machining operation of the next workpiece to be machined (i.e. the next inspection block blank 1-0) can be performed.

[0145] Compared with the prior art, the processing and positioning device for the inspection block provided by this utility model has the following beneficial effects:

[0146] 1. This utility model adopts a structure in which the drill bushing protrudes to the outside of the device, which ensures full contact between the longitudinal positioning surface 102 of the workpiece and the second positioning pin 62, and improves the positional accuracy of the vertical through hole 104 of the workpiece to be processed.

[0147] It should be noted that, since the position of the hole to be processed (i.e., the vertical through hole 104 of the workpiece to be processed) on the inspection block blank 1-0 is close to the right end face 103 of the workpiece of the inspection block blank 1-0, and when the operator puts the inspection block blank 1-0 into the workpiece mounting slot 201 of the fixture body 2, it is necessary to hold the right side of the inspection block blank 1-0. In order to ensure that the operator can hold the inspection block blank 1-0 and put it into the deepest part of the device when installing the inspection block blank 1-0, in this utility model, the right end face 103 of the workpiece to be processed, the inspection block blank 1-0, is required to protrude to the right of the right end face of the fixture body or be flush with the right end face. This requirement allows the operator to hold the inspection block blank 1-0 and put it into the deepest part of the device, ensuring sufficient contact between the longitudinal positioning surface 102 of the workpiece and the second positioning pin 62.

[0148] If a protruding frustum (i.e., arc 209) is not provided at the location of the drill bushing mounting hole 206, then the workpiece end side (i.e., the right end face 103 of the workpiece) of the inspection block blank 1-0 will be completely inserted into the clamping body 2 of the present invention, thereby failing to guarantee the effectiveness of the longitudinal positioning of the workpiece (i.e., failing to guarantee that the longitudinal positioning surface 102 of the workpiece on the left side of the central protrusion 100 at the front end of the inspection block blank 1-0 abuts against the right side of the second positioning pin 62, and failing to guarantee that the two reach a state of close contact).

[0149] Furthermore, if the clamp body 2 does not further provide the drill sleeve mounting hole 206 by providing a right-protruding frustum (i.e., arc 209), see [reference needed]. Figure 15 As shown, the right end of the clamp body 2 in the state of no arc platform 209 is assumed to be the position with the largest distance between the drill sleeve mounting hole 206 and the right end of the clamp body 2. After practical testing, the actual distance between the right end of the clamp body 2 and the rightmost generatrix of the drill sleeve mounting hole 206 (i.e., the longitudinally distributed straight line tangent to the drill sleeve mounting hole 206) is only 2mm, which is insufficient to meet the fixing requirements of the drill sleeve 3.

[0150] 2. This utility model adopts a clamping structure consisting of a threaded sleeve and a clamping screw (specifically, the second clamping screw 42) as the main clamping structure for the upper end face of the inspection block blank 1-0. Therefore, it is convenient to perform partial maintenance and replacement of the clamping mechanism, avoiding frequent overall replacement of the clamping body in the device provided by this utility model.

[0151] It should be noted that the second clamping screw 42, located above the processing positioning device of this utility model, clamps the upper surface of the workpiece to be processed (i.e., the inspection block blank 1-0) with a relatively large clamping force, and is the main clamping force. The first clamping screw 41 applies a smaller clamping force to the front side of the workpiece to be processed, and is the secondary clamping force. In this utility model, the device has a screw sleeve 5 installed on the clamping body 2 for easy maintenance and replacement. The screw sleeve 5 and the second clamping screw 42 are the main clamping structures. Since the screw sleeve 5 and the second clamping screw 42 are used frequently and subjected to large forces, they are prone to wear and need to be replaced periodically, without replacing the clamping body 2.

[0152] If the conventional clamping screw installation method is used, that is, the clamping screw is screwed into the threaded hole (for example, a threaded hole machined on the fixture body), the threaded hole is prone to wear because the force is large and the frequency of use is high. This will lead to the need to replace the entire fixture body, resulting in unnecessary economic losses.

[0153] 3. By applying this utility model, the problem of how to process through holes at close range on the end face of a workpiece can be solved. This utility model has a reasonable structure, is convenient and quick to operate, has high processing accuracy, and is easy to maintain, which greatly improves work efficiency.

[0154] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A processing and positioning device for an inspection block, characterized in that, Including the clamping body (2); The horizontally placed fixture (2) is provided with a workpiece mounting groove (201); The workpiece mounting slot (201) is used to place the inspection block blank (1-0) to be processed; The front end of the clamping body (2) is provided with a longitudinally distributed first clamping screw (41); The inspection block blank (1-0) is located directly behind the first clamping screw (41); A screw sleeve (5) is provided on the upper right end of the clamp body (2); The sleeve (5) is threadedly connected to the vertically distributed second clamping screw (42); The inspection block blank (1-0) is located directly below the second clamping screw (42); Two first positioning pins (61) are vertically through the rear end of the clamping body (2); A second positioning pin (62) is vertically inserted through the front side of the clamping body (2); Check that the front and rear sides of the blank (1-0) are in contact with the second positioning pin (62) and the first positioning pin (61) respectively.

2. The apparatus of claim 1 wherein, The rear end of the first clamping screw (41) is used to abut against the front end of the inspection block blank (1-0) located in the workpiece mounting groove (201); The lower end of the second clamping screw (42) is used to abut against the upper end face (107) of the workpiece on the upper side of the inspection block blank (1-0); The front side of the first locating pin (61) is used to abut against the workpiece transverse locating surface (101) on the rear side of the inspection block blank (1-0); The right side of the second locating pin (62) is used to abut against the longitudinal locating surface (102) of the workpiece on the left side of the central protrusion (100) at the front end of the inspection block blank (1-0).

3. The apparatus of claim 1 wherein, The fixture body (2) is provided with workpiece mounting slots (201) that are distributed horizontally throughout; On the left and right sides of the rear end of the clamp body (2), there is a vertically distributed transverse positioning pin hole (202); The transverse positioning pin hole (202) is directly connected to the rear end of the workpiece mounting groove (201); The front end of the clamp body (2) is provided with a vertically distributed longitudinal positioning pin hole (203); The longitudinal positioning pin hole (203) is directly connected to the front end of the workpiece mounting groove (201); A vertically distributed first positioning pin (61) is installed in the transverse positioning pin hole (202); A vertically distributed second positioning pin (62) is installed in the longitudinal positioning pin hole (203).

4. The apparatus of claim 3 wherein, The diameters of the two transverse locating pin holes (202) are equal to the diameter of the second locating pin (62); The diameter of the longitudinal locating pin hole (203) is equal to the diameter of the first locating pin (61); And / or, The two transverse locating pin holes (202) are symmetrically distributed from left to right; The line connecting the center points of the two transverse locating pin holes (202) intersects perpendicularly with the longitudinal central axis of the longitudinal locating pin hole (203); And / or, The distance E′ between the rightmost generatrix of the longitudinal positioning pin hole (203) and the left end face (210) of the clamping body (2) is smaller than the distance E between the longitudinal positioning surface (102) of the workpiece and the left end face (105) of the workpiece of the inspection block blank (1-0).

5. The processing and positioning device for the inspection block as described in any one of claims 1 to 4, characterized in that, The upper right end of the fixture body (2) is provided with a screw sleeve fitting hole (204) and a screw sleeve countersunk hole (205); A threaded sleeve (5) is provided in the stepped hole consisting of a threaded sleeve fitting hole (204) and a threaded sleeve countersunk hole (205); A chip removal through hole (207) is provided at the lower right end of the clamping body (2); The upper and lower sides of the workpiece mounting groove (201) are connected to the countersunk hole (205) of the threaded sleeve and the chip removal through hole (207) respectively; The center of the threaded sleeve (5) is provided with a vertically distributed threaded hole (501); The lower part of the threaded sleeve (5) is provided with a shoulder (502); The upper part of the threaded sleeve (5) is provided with a threaded sleeve shaft (503); The threaded hole (501) of the screw sleeve is threadedly connected to the second clamping screw (42).

6. The apparatus of claim 5 wherein, The diameter of the shoulder (502) is larger than the diameter of the threaded sleeve shaft (503); And / or, The diameter and height of the shoulder (502) are smaller than the diameter and depth of the countersunk hole (205) of the threaded sleeve, respectively; And / or, The center points of the threaded sleeve fitting hole (204) and the threaded sleeve countersunk hole (205) are located on the same vertical central axis; And / or, The diameter of the chip removal through hole (207) is the same as the diameter of the countersunk hole (205) of the threaded sleeve; And / or, The center point of the workpiece mounting groove (201) is the center point of the fixture body (2); And / or, The height dimension A′ of the workpiece mounting groove (201) is larger than the height dimension A of the inspection block blank (1-0).

7. The processing and positioning device for the inspection block as described in claim 1, characterized in that, The center of the arc platform (209) is provided with vertically distributed drill sleeve mounting holes (206); A drill bushing (3) is provided in the drill bushing mounting hole (206); The drill bushing (3) includes a drill bushing mounting shaft (302) and a drill bushing hole (301). A vertically penetrating drill bushing hole (301) is provided at the center of the drill bushing mounting shaft (302); The lower part of the clamping body (2) is provided with a U-shaped opening (211) that is concentric with the drill sleeve mounting hole (206) and opens to the right.

8. The apparatus of claim 1 wherein, The front end of the clamping body (2) is provided with longitudinally distributed clamping screw holes (213); The rear end of the clamping screw hole (213) is connected to the front side of the workpiece mounting groove (201); The clamping screw hole (213) is threadedly connected to the first clamping screw (41); The front end of the first clamping screw (41) is provided with a hexagonal head (401); The first clamping screw (41) has a threaded portion (402) in the middle; The rear end of the first clamping screw (41) has a clamping part (403); The clamping part (403) of the first clamping screw (41) abuts against the front end face of the central protrusion (100) of the inspection block blank (1-0) located in the workpiece mounting groove (201).

9. A processing positioning device for checking blocks according to any one of claims 1 to 8, characterized in that, The distance between the center point of the drill bushing hole (301) of the drill bushing (3) and the center point of the longitudinal positioning pin hole (203) in the longitudinal distribution of the vertical plane is equal to the sum of the distance L from the center point of the workpiece vertical through hole (104) on the inspection block (1) of the finished product to the longitudinal positioning surface (102) of the workpiece and the radius of the longitudinal positioning pin hole (203). The distance between the center point of the drill bushing hole (301) of the drill bushing (3) and the center point of the transverse positioning pin hole (202) on the transversely distributed vertical plane is equal to the sum of the distance H from the center point of the workpiece vertical through hole (104) on the inspection block (1) of the finished product to the workpiece transverse positioning surface (101) and the radius of the transverse positioning pin hole (202).

10. A processing system for inspection blocks, characterized in that, The invention includes a machining and positioning device for an inspection block as described in any one of claims 1 to 9, and a bench drill. A bench drill is used to perform machining operations on the inspection block blank (1-0) at a position directly below the drill bushing hole (301) of the drill bushing (3) through the drill bit on it, thereby machining a vertical through hole (104) in the workpiece.

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