Processing positioning device and processing system for inspection block

Abstract

The invention discloses a machining and positioning device and a machining system for an inspection block. The machining 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. According to the invention, the inspection block blank can be conveniently and reliably positioned, the positioning precision is ensured, the vertical through hole of the workpiece can be further processed, and the processing precision is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly relates to a machining positioning device and a machining system for an inspection block. Background Art

[0002] A switch machine is an important signal basic equipment for reliably switching the position of a turnout, changing the opening direction of the turnout, locking the switch rail of the turnout, and reflecting the position of the turnout.

[0003] Refer to Figures 5a to 5b 、 Figures 6a to 6b As shown, the inspection block 1 is a key component of the indicating rod group in the switch machine product.

[0004] The finished and machined inspection block 1 is a thin plate-like part with an F-shaped outer contour. It has a workpiece horizontal positioning surface 101 on its rear side, a workpiece longitudinal positioning surface 102 longitudinally distributed on the left side of the middle convex block 100 at its front end, a workpiece right end surface 103 at its right end, a workpiece vertical through hole 104 with a diameter of D on the front side near the workpiece right end surface 103, a workpiece left end surface 105 on the left side of the inspection block 1, a workpiece lower end surface 106 on the lower side of the inspection block 1, and a workpiece upper end surface 107 on the upper side of the inspection block 1;

[0005] For the inspection block 1, since the machining accuracy of the position of the workpiece vertical through hole 104 thereon directly affects the assembly accuracy of the inspection block 1 and the smoothness of the overall operation of the switch machine.

[0006] Refer to together 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 difference is only that there is no workpiece vertical through hole 104, and the others are the same), the machining process requirements are as follows: It is necessary to position with the distance H from the center point of the workpiece vertical through hole 104 to the workpiece horizontal 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, so as to accurately and reliably determine the position of the workpiece vertical through hole 104 to be machined, and then perform the machining operation of the workpiece vertical through hole 104.

[0007] In view of this, the distance H from the center point of the workpiece vertical through hole 104 to the workpiece horizontal 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 are key parameters when machining the workpiece vertical through hole 104 on the inspection block blank 1-0.

[0008] However, since the vertical through-hole 104 of the workpiece to be processed is relatively close to the right end face 103 of the workpiece, after installing the drill bushing in the commonly used processing device at present, the vertical plane where the right end face 103 of the workpiece is located will be covered by the processing device, and it is impossible to position the longitudinal positioning surface 102 of the workpiece by pushing the right end face 103 of the workpiece. Therefore, the precise positioning of the longitudinal positioning surface 102 of the workpiece cannot be achieved, and furthermore, the distance L from the center point of the vertical through-hole 104 of the workpiece to the longitudinal positioning surface 102 cannot be accurately determined, which affects the machining accuracy of the vertical through-hole 104 of the workpiece. The machining accuracy of the workpiece is poor, and finally the machining fails, resulting in waste products and causing serious economic losses.

[0009] Therefore, it is necessary to design a technology that can solve the above technical problems. Summary of the Invention

[0010] The purpose of the present invention is to provide a machining positioning device and a machining system for an inspection block in view of the technical defects existing in the prior art.

[0011] To this end, the present invention provides a machining positioning device for an inspection block, including a fixture body;

[0012] A workpiece mounting groove is provided on the horizontally placed fixture body;

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

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

[0015] The inspection block blank is located directly behind the first pressing screws;

[0016] A screw sleeve is provided at the upper right end of the fixture body;

[0017] The screw sleeve is threadedly connected with a second pressing screw distributed vertically;

[0018] The inspection block blank is located directly below the second pressing screw;

[0019] Two first positioning pins are vertically penetrated through the rear end of the fixture body;

[0020] One second positioning pin is vertically penetrated through the front side of the fixture body;

[0021] The front and rear sides of the inspection block blank are respectively in contact with the second positioning pin and the first positioning pins.

[0022] In addition, the present invention also provides a machining system for an inspection block, including the machining positioning device for an inspection block as described above, and a bench drill;

[0023] A bench drill is used to perform a machining operation on a position directly below the drill bushing hole of a drill bushing on a rough inspection block blank through a drill bit thereon, so as to machine a vertical through hole of a workpiece.

[0024] As can be seen from the technical solutions provided by the present invention above, compared with the prior art, the present invention provides a machining positioning device and a machining system for an inspection block, with a scientific structural design, which can conveniently and reliably position a rough inspection block blank to be machined, ensure the positioning accuracy, and further facilitate the accurate machining operation of the vertical through hole of the workpiece on the rough inspection block blank to be machined, guarantee the machining accuracy of the vertical through hole of the workpiece, and has great practical significance. Description of the Drawings

[0025] Figure 1 It is a three-dimensional structure schematic diagram of a machining positioning device for an inspection block provided by the present invention when clamping a workpiece to be machined (i.e., a rough inspection block blank).

[0026] Figure 2a It is a top view of a machining positioning device for an inspection block provided by the present invention in a machining state.

[0027] Figure 2b It is along Figure 2a The sectional view taken along the line A-A shown.

[0028] Figures 3a to 3e They are respectively the rear view, right view, left view, bottom view and top view of a machining positioning device for an inspection block provided by the present invention when a rough inspection block blank to be machined has been clamped.

[0029] Figure 4 It is a three-dimensional structure schematic diagram of a machining positioning device for an inspection block provided by the present invention when no rough inspection block blank is clamped.

[0030] Figure 5a It is a three-dimensional structure schematic diagram of a machined inspection block Figure 1 ;

[0031] Figure 5b It is a second three-dimensional structure schematic diagram of a machined inspection block.

[0032] Figure 6a It is a top view of a machined inspection block.

[0033] Figure 6b It is a left view of a machined inspection block.

[0034] Figure 7a It is a three-dimensional structure schematic diagram of a rough inspection block blank for the vertical through hole of the workpiece to be machined Figure 1 ;

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

[0036] Figure 8a 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 Partial sectional view of the fixture body in the machining positioning device of an inspection block provided by the present invention;

[0039] Figure 9b It is along Figure 9a Sectional view taken along the B-B line shown;

[0040] Figures 10a to 10e Rear view, right view, left view, bottom view and top view of the fixture body in the machining positioning device of an inspection block provided by the present invention respectively;

[0041] Figure 11 Sectional view of the drill bushing in the machining positioning device of an inspection block provided by the present invention;

[0042] Figure 12 Schematic diagram of the structure of the first compression screw in the machining positioning device of an inspection block provided by the present invention;

[0043] Figure 13 Sectional view of the screw sleeve in the machining positioning device of an inspection block provided by the present invention;

[0044] Figure 14 Schematic diagram of the structure of the first positioning pin in the machining positioning device of an inspection block provided by the present invention;

[0045] Figure 15 Top view of a fixture body in the state of assuming no arc platform;

[0046] In the figure, 1. Inspection block; 1-0. Blank of the inspection block;

[0047] 100. Middle convex block, 101. Lateral positioning surface of the workpiece, 102. Longitudinal positioning surface of the workpiece, 103. Right end surface of the workpiece, 104. Vertical through-hole of the workpiece, 105. Left end surface of the workpiece; 106. Lower end surface of the workpiece, 107. Upper end surface of the workpiece;

[0048] 2. Fixture body;

[0049] 201. Workpiece installation groove, 202. Lateral positioning pin hole, 203. Longitudinal positioning pin hole, 204. Screw sleeve tight-fitting hole, 205. Screw sleeve counterbore;

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

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

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

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

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

[0055] 5. Sleeve; 501. Sleeve threaded hole, 502. Shoulder, 503. Sleeve shaft;

[0056] 61. First positioning pin; 62. Second positioning pin. Detailed implementation manner

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0058] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0059] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0060] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[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 , the present invention provides a machining positioning device for an inspection block, including a fixture body;

[0062] A workpiece mounting groove 201 is provided on the horizontally placed fixture body 2;

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

[0064] The front end of the fixture body 2 is provided with a first pressing screw 41 distributed longitudinally;

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

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

[0067] The screw sleeve 5 is threadedly connected to a second pressing screw 42 distributed vertically;

[0068] The inspection block blank 1-0 is located directly below the second pressing screw 42;

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

[0070] One second positioning pin 62 is vertically penetrated through the front side of the fixture body 2;

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

[0072] In the present invention, specifically, the rear end portion of the first pressing screw 41 is used to abut against (i.e., tightly contact) the front end of the inspection block blank 1-0 located in the workpiece mounting groove 201;

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

[0074] The front side of the first positioning pin 61 is used to tightly contact (i.e., abut against) the lateral positioning face 101 of the workpiece on the rear side of the blank of the inspection block 1-0.

[0075] The right side of the second positioning pin 62 is used to abut against (i.e., tightly contact) the longitudinal positioning face 102 of the workpiece on the left side of the middle convex block 100 at the front end of the blank of the inspection block 1-0.

[0076] In the present invention, in terms of specific implementation, refer to Figure 9a 、 Figure 9b 、 Figure 10b 、 Figure 10c As shown, a workpiece installation groove 201 is provided on the fixture body 2 and is horizontally distributed through (i.e., runs across the left and right end faces).

[0077] On the left and right sides at the rear end of the fixture body 2, a laterally penetrating and vertically distributed lateral positioning pin hole 202 is respectively provided.

[0078] The lateral positioning pin hole 202 is directly communicated with the rear end of the workpiece installation groove 201.

[0079] That is to say, for the present invention, there are two laterally penetrating and vertically distributed lateral positioning pin holes 202 that are communicated with the workpiece installation groove 201 and penetrate through the upper and lower end faces of the fixture body 2.

[0080] A longitudinally penetrating and vertically distributed longitudinal positioning pin hole 203 is provided at the front end of the fixture body 2.

[0081] The longitudinal positioning pin hole 203 is directly communicated with the front end of the workpiece installation groove 201.

[0082] A vertically distributed first positioning pin 61 is installed in the lateral 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 on the side close to the front end face 208 of the fixture body 2.

[0085] It should be noted that in the present invention, 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 terms of specific implementation, the diameters of the two lateral 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 specific implementation, the two horizontal positioning pin holes 202 are symmetrically distributed left and right;

[0089] The connecting line of the center points of the two horizontal positioning pin holes 202 is perpendicular to and intersects with the longitudinal central axis of the longitudinal positioning pin hole 203 (i.e., the longitudinal straight line passing through the center point of the longitudinal positioning pin hole 203).

[0090] That is to say, in the horizontal direction, the longitudinal positioning pin hole 203 is located between the two horizontal positioning 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 clamping body end face 210 on the left side of the clamping body 2 is smaller than the distance E between the workpiece longitudinal positioning surface 102 and the workpiece left end face 105 of the inspection block blank 1-0, preferably 5 mm smaller, which is convenient for pushing out the workpiece after machining. Because of such a design, the workpiece left end face 105 of the inspection block blank 1-0 can protrude leftward from the left clamping body end face 210 on the left side of the clamping body 2, that is, the left side of the inspection block blank 1-0 is exposed outside the clamping body 2.

[0092] In the present invention, in specific implementation, a screw sleeve tight-fitting hole 204 and a screw sleeve counterbore 205 are provided at the upper right part of the clamping body 2;

[0093] A screw sleeve 5 is arranged in the stepped hole composed of the screw sleeve tight-fitting hole 204 and the screw sleeve counterbore 205;

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

[0095] The upper and lower sides of the workpiece mounting groove 201 are respectively communicated with the screw sleeve counterbore 205 and the chip removal through hole 207;

[0096] It should be noted that the screw sleeve tight-fitting hole 204 and the screw sleeve counterbore 205 are close to the central position of the clamping body 2.

[0097] In specific implementation, a vertically penetrating screw sleeve threaded hole 501 is provided at the central position of the screw sleeve 5;

[0098] A shoulder 502 is provided at the lower part of the screw sleeve 5;

[0099] A screw sleeve shaft 503 is provided at the upper part of the screw sleeve 5;

[0100] The screw sleeve threaded hole 501 is threadedly connected with the second pressing screw 42.

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

[0102] Furthermore, the diameter and height dimensions of the shoulder 502 are smaller than the diameter and depth dimensions of the counterbore 205 of the sleeve respectively, preferably 1 mm smaller, for ease of installation, that is, to achieve a clearance fit.

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

[0104] Specifically, the counterbore 205 of the sleeve is located directly below the tight-fitting hole 204 of the sleeve and the two are connected and communicate with each other;

[0105] The bottom of the counterbore 205 of the sleeve communicates with the upper side of the workpiece mounting groove 201;

[0106] The upper side of the chip removal through hole 207 communicates with the lower side of the workpiece mounting groove 201;

[0107] Specifically, the center points of the tight-fitting hole 204 and the counterbore 205 of the sleeve are located on the same vertical central axis.

[0108] It should be noted that for the present invention, a tight-fitting hole 204 and a counterbore 205 penetrating the upper part of the workpiece mounting groove 201 are provided at a position to the right of the center of the fixture body 2, and a chip removal through hole 207 penetrating the lower part of the workpiece mounting groove 201 is provided at the same central position.

[0109] Specifically, the diameter of the chip removal through hole 207 is the same as (i.e., equal to) the diameter of the counterbore 205 of the sleeve;

[0110] In the present invention, specifically, a drill bushing mounting hole 206 vertically penetrating and distributed is provided at the center position of the arc-shaped platform 209;

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

[0112] It should be noted that for the present invention, the bottom opening of the drill bushing 3 is located directly above the machining position of the workpiece vertical through hole 104, that is, they are vertically and correspondingly arranged. See Figure 11 As shown, the drill bushing 3 has a hollow structure and openings at both the upper and lower ends.

[0113] Specifically, 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 position of the drill bushing mounting shaft 302.

[0115] Specifically, the lower part of the fixture body 2 is provided with a U-shaped opening 211 that is concentric with the drill bushing mounting hole 206 and opens to the right, for preventing the drill bit on the bench drill from damaging the device of the present invention during the machining of the workpiece vertical through hole 104.

[0116] In the present invention, specifically, a vertically distributed pressing screw hole 213 is provided at the front end of the jig body 2;

[0117] The rear end of the pressing screw hole 213 communicates with the front side of the workpiece mounting groove 201;

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

[0119] The rear end portion of the first pressing screw 41 abuts against (i.e., tightly contacts) the front side (specifically, the front end face of the middle convex block 100) of the inspection block blank 1-0 located in the workpiece mounting groove 201.

[0120] It should be noted that for the present invention, a pressing screw hole 213 penetrating through the workpiece mounting groove 201 is provided in the middle of the front end face 208 of the jig body 2;

[0121] Specifically, a hexagonal head 401 is provided at the front end portion of the first pressing screw 41;

[0122] The middle portion of the first pressing screw 41 has a threaded portion 402;

[0123] The rear end of the first pressing screw 41 has a pressing portion 403;

[0124] The pressing portion 403 of the first pressing screw 41 abuts against (i.e., tightly contacts) the front end face of the middle convex block 100 at the front end of the inspection block blank 1-0 located in the workpiece mounting groove 201.

[0125] It should be noted that the front end portion of the first pressing screw 41 is provided with a hexagonal head 401 for convenient rotation, the middle portion is provided with a threaded portion 402, and the tail portion is provided with a pressing portion 403.

[0126] It should be noted that in the present invention, the shape, structure, and size of the first pressing screw 41 are exactly the same as those of the second pressing screw 42.

[0127] In the present invention, specifically, as shown in Figure 10b 、 Figure 10c the lower groove surface (i.e., the inner cavity bottom surface, which is a horizontally distributed plane) of the workpiece mounting groove 201 is the lower positioning groove surface 212;

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

[0129] In the present invention, specifically, the center point of the workpiece mounting groove 201 is the center point of the jig body 2.

[0130] In specific implementation, refer to Figure 8b and Figure 9b As shown, the height dimension A' of the workpiece mounting groove 201 is larger than the height dimension A of the blank inspection block 1-0, preferably 2 mm larger, so as to facilitate horizontally and laterally inserting the blank inspection block 1-0 into the workpiece mounting groove 201 from the right side of the fixture 2.

[0131] In the present invention, in specific implementation, the distance between the vertical plane (i.e., the front-back direction) where the center point of the drill sleeve hole 301 of the drill sleeve 3 and the center point of the longitudinal positioning pin hole 203 are located is equal to the sum of the distance L from the center point of the workpiece vertical through hole 104 on the finished inspection block 1 to the workpiece longitudinal positioning surface 102 and the radius of the longitudinal positioning pin hole 203;

[0132] In the present invention, in specific implementation, the distance between the vertical plane (i.e., the left-right direction) where the center point of the drill sleeve hole 301 of the drill sleeve 3 and the center point of the transverse positioning pin hole 202 are located is equal to the sum of the distance H from the center point of the workpiece vertical through hole 104 on the finished inspection block 1 to the workpiece transverse positioning surface 101 and the radius of the transverse positioning pin hole 202.

[0133] Based on the above design, for the present invention, after the blank inspection block 1-0 to be processed is clamped by the device of the present invention, the drill sleeve hole 301 of the drill sleeve 3 can be located directly above the position to be processed of the workpiece vertical through hole 104, that is, they are vertically and correspondingly arranged up and down, so as to accurately determine the processing position of the workpiece vertical through hole 104 to be processed on the blank inspection block 1-0, and then perform the processing operation.

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

[0135] The bench drill is used to perform a processing operation on the position directly below the drill sleeve 3 (specifically, the drill sleeve hole 301 therein) on the blank inspection block 1-0 through the drill bit thereon, so as to process and obtain the workpiece vertical through hole 104.

[0136] In the present invention, in specific implementation, the bench drill, that is, a bench-type drill press, refers to a small drill press that can be placed on a workbench and whose spindle and the drill bit on the spindle are vertically arranged. It is a mature mechanical processing equipment in the prior art and will not be elaborated here.

[0137] To more clearly understand the technical solution of the present invention, the working process of the present invention is described below.

[0138] First, the staff places the device of the present invention on the workbench, holds one side of the right end face 103 of the workpiece of the inspection block blank 1-0, and inserts the inspection block blank 1-0 to be processed into the device through the workpiece installation groove 201 on the right end face of the fixture body 2 of the present invention from one side of the left end face 105 of the workpiece, so that the longitudinal positioning surface 102 of the workpiece of the inspection block blank 1-0 abuts against the second positioning pin 62 arranged in the longitudinal positioning pin hole 203 (i.e., tight contact), realizing the positioning of the longitudinal positioning surface 102 of the workpiece;

[0139] It should be noted that for the present invention, the staff holds the inspection block blank 1-0, the workpiece to be processed, and inserts it into the workpiece installation groove 201 of the tooling from the right side of the fixture body 2, and pushes it to the deepest position (i.e., pushes it to the left until it can no longer be pushed), which can ensure that the positioning surface 102 of the workpiece abuts against the second positioning pin 62. Because this workpiece (i.e., the inspection block blank 1-0) is small in volume and not greatly affected by the machining force during cutting, therefore, the two compressions applied by the first compression screw 41 and the second compression screw 42 to the inspection block blank 1-0 can meet the clamping use requirements of the workpiece.

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

[0141] Then, further tighten the second compression screw 42 located in the screw sleeve 5, so that the lower end face 106 of the workpiece below the inspection block blank 1-0 abuts against the lower positioning groove surface 212 at the bottom of the workpiece installation groove 201, completing the positioning of the lower end face 106 of the workpiece, and thus completing the positioning and clamping of the device of the present invention and the workpiece to be processed (i.e., the inspection block blank 1-0);

[0142] Then, start the bench drill. Align the drill bit on the bench drill with the drill sleeve hole 301 of the drill sleeve 3. Then, under the guidance of the drill sleeve 3, take the position directly below the drill sleeve hole 301 on the inspection block blank 1-0 as the position of the vertical through hole 104 of the workpiece to be further processed, and then process to obtain the vertical through hole 104 of the workpiece, and finally obtain the finished inspection block 1 with the vertical through hole 104 of the workpiece processed.

[0143] It should be noted that move the device of the present invention with the workpiece to be processed (the inspection block blank 1-0) to align the drill bit on the bench drill with the drill sleeve hole 301 on the drill sleeve 3 vertically. Start the bench drill, control the operating handle, and make the drill bit cut downward along the drill sleeve 3 to the workpiece to be processed until the workpiece is drilled through, and the vertical through hole 104 of the workpiece can be obtained. Among them, during the cutting process, the drill sleeve 3 plays a role in positioning the drill bit and guiding the drill bit for processing.

[0144] After completing the machining of the vertical through-hole 104 of the workpiece, loosen the two pressing screws, namely the first pressing screw and the second pressing screw, and push the left end face 105 of the workpiece extending from the left end of the device of the present invention from left to right, then the machined inspection block 1 can be taken out. 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 carried out.

[0145] Compared with the prior art, the machining positioning device for the inspection block provided by the present invention has the following beneficial effects:

[0146] 1. The present invention adopts a structure in which the drill bushing protrudes outside the device, ensuring sufficient contact between the longitudinal positioning surface 102 of the workpiece and the second positioning pin 62, and improving the position accuracy of the vertical through-hole 104 of the workpiece to be machined.

[0147] It should be noted that since the position of the hole to be machined (i.e., the vertical through-hole 104 of the workpiece) on the inspection block blank 1-0 is relatively close to the right end face 103 of the workpiece of the inspection block blank 1-0, and when the staff installs the inspection block blank 1-0 into the workpiece installation groove 201 of the fixture 2, they need to hold the right side of the inspection block blank 1-0. To ensure that when installing the inspection block blank 1-0, the staff can hold the inspection block blank 1-0 and send the inspection block blank 1-0 to the deepest part of the device. In the present invention, the right end face 103 of the workpiece of the inspection block blank 1-0, which is the workpiece to be machined, is required to protrude to the right of the right end face of the fixture or be flush with the right side end face. Such a requirement enables the staff to hold the inspection block blank 1-0 and send the inspection block blank 1-0 to 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 round platform (i.e., arc platform 209) is not provided at the position where the drill bushing installation hole 206 is set, then the end side of the workpiece (i.e., the right end face 103) of the inspection block blank 1-0, which is the workpiece to be machined, will completely extend into the fixture 2 of the device of the present invention, thus unable to ensure the effectiveness of workpiece longitudinal positioning (i.e., unable to ensure that the longitudinal positioning surface 102 on the left side of the middle convex block 100 at the front end of the inspection block blank 1-0 abuts against the right side of the second positioning pin 62, and unable to ensure that the two reach a state of close contact).

[0149] In addition, if the fixture 2 does not further set the drill bushing installation hole 206 by setting a round platform protruding to the right (i.e., arc platform 209), see Figure 15As shown, at this time, the assumed right end face C of the fixture body 2 in the state without the arc table 209 is the position where the distance between the drill bushing mounting hole 206 and the right end of the fixture body 2 is the largest. After practical inspection, the actual distance dimension between the assumed right end face C of the fixture body 2 and the rightmost generatrix of the drill bushing mounting hole 206 (i.e., the longitudinally distributed straight line tangent to the drill bushing mounting hole 206) is only 2 mm, which is not sufficient to meet the fixing requirement of the drill bushing 3.

[0150] 2. The present invention adopts a pressing structure combined with a screw sleeve and a pressing screw (specifically, the second pressing screw 42) as the main pressing structure for the upper end face of the blank of the inspection block 1-0. Therefore, it is convenient to perform local maintenance and replacement on this pressing mechanism, avoiding frequent overall replacement of the fixture body in the device provided by the present invention.

[0151] It should be noted that the second pressing screw 42 provided above the machining positioning device of the present invention presses the upper plane of the workpiece to be machined (i.e., the blank of the inspection block 1-0), and the pressing force is large, which is the main pressing. The pressing force applied by the first pressing screw 41 to the front side of the workpiece to be machined is small, which is the secondary pressing. For the present invention, a screw sleeve 5 that is convenient for maintenance and replacement is installed on the fixture body 2 of the device of the present invention. The screw sleeve 5 and the second pressing screw 42 serve as the main pressing structure. Since the usage frequency and the force of the screw sleeve 5 and the second pressing screw 42 are both large, they are prone to wear and need to be replaced regularly. Instead of replacing the fixture body 2.

[0152] If a conventional installation method of the pressing screw is adopted, that is, the pressing screw is threadedly tightened with a threaded hole (for example, a threaded hole machined on the fixture body), then due to the large force and high usage frequency of this threaded hole, the threaded hole is prone to wear, which will lead to the need to replace the entire fixture body, causing unnecessary economic losses.

[0153] 3. By applying the present invention, the problem of how to machine a through hole at a short distance from the end face of the workpiece can be solved. The structure of the present invention is reasonable, the operation is convenient and fast, the machining accuracy is high, and it is convenient for maintenance, greatly improving the work efficiency.

[0154] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

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

2. The processing and positioning device for the inspection block according to claim 1, characterized in that: 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 surface (107) of the workpiece on the upper side of the inspection block blank (1-0); The front side of the first positioning pin (61) is used to abut against the workpiece transverse positioning surface (101) on the rear side of the inspection block blank (1-0); The right side of the second positioning pin (62) is used to abut against the workpiece longitudinal positioning surface (102) on the left side of the middle protrusion (100) at the front end of the inspection block blank (1-0).

3. The processing and positioning device for the inspection block according to claim 1, characterized in that: The clamp body (2) is provided with workpiece mounting grooves (201) extending transversely therethrough; A transverse positioning pin hole (202) is respectively provided on the left and right sides of the rear end of the clamp body (2); 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 longitudinal positioning pin hole (203) which is vertically penetrated; The longitudinal positioning pin hole (203) is directly connected to the front end of the workpiece mounting groove (201); A first positioning pin (61) distributed vertically is installed in the transverse positioning pin hole (202); A second positioning pin (62) distributed vertically is installed in the longitudinal positioning pin hole (203).

4. The processing and positioning device for the inspection block according to claim 3, characterized in that: The diameters of the two transverse positioning pin holes (202) are equal to the diameter of the second positioning pin (62); The diameter of the longitudinal positioning pin hole (203) is equal to the diameter of the first positioning pin (61); and / or, The two transverse positioning pin holes (202) are symmetrically distributed on the left and right sides; A line connecting the center points of the two transverse positioning pin holes (202) intersects perpendicularly with the longitudinal center axis of the longitudinal positioning pin hole (203); and / or, The distance E′ between the rightmost generatrix of the longitudinal positioning pin hole (203) and the left end surface (210) of the clamp body (2) is smaller than the distance E between the workpiece longitudinal positioning surface (102) and the left end surface (105) of the inspection block blank (1-0).

5. The processing and positioning device for the inspection block according to claim 1, characterized in that: The upper right end of the clamp body (2) is provided with a screw sleeve tight-fitting hole (204) and a screw sleeve countersunk hole (205); A screw sleeve (5) is arranged in the stepped hole composed of a screw sleeve tight-fitting hole (204) and a screw sleeve counterbore (205); A chip removal through hole (207) is provided at the lower right end of the clamp body (2); The upper and lower sides of the workpiece mounting groove (201) are respectively connected to the screw sleeve counterbore (205) and the chip removal through hole (207); A screw sleeve threaded hole (501) is vertically penetrated and arranged at the center of the screw sleeve (5); The lower part of the screw sleeve (5) is provided with a shoulder (502); A screw sleeve shaft (503) is provided on the upper part of the screw sleeve (5); The threaded hole (501) of the screw sleeve is threadedly connected to the second clamping screw (42).

6. The processing and positioning device for the inspection block according to claim 5, characterized in that: The diameter of the shoulder (502) is larger than the diameter of the screw sleeve shaft (503); and / or, The diameter and height of the shoulder (502) are respectively smaller than the diameter and depth of the screw sleeve counterbore (205); and / or, The center points of the screw sleeve tight-fitting hole (204) and the screw sleeve counterbore (205) are located on the same vertical center axis; and / or, The diameter of the chip removal through hole (207) is consistent with the diameter of the screw sleeve counterbore (205); and / or, The center point of the workpiece mounting groove (201) is the center point of the clamp 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 according to claim 1, characterized in that: A drill sleeve mounting hole (206) is vertically disposed at the center of the arc platform (209); A drill sleeve (3) is arranged in the drill sleeve mounting hole (206); The drill sleeve (3) comprises a drill sleeve mounting shaft (302) and a drill sleeve hole (301) A vertically penetrating drill sleeve hole (301) is provided at the center of the drill sleeve installation shaft (302); The lower part of the clamp body (2) is provided with a U-shaped opening (211) which is concentric with the drill sleeve mounting hole (206) and opens to the right.

8. The processing and positioning device for the inspection block according to claim 1, characterized in that: The front end of the clamp body (2) is provided with longitudinally distributed compression 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 middle portion of the first clamping screw (41) has a threaded portion (402); The rear end of the first clamping screw (41) has a clamping portion (403); The clamping portion (403) of the first clamping screw (41) abuts against the front end surface of the middle protrusion (100) at the front end of the inspection block blank (1-0) located in the workpiece mounting groove (201).

9. The inspection block processing positioning device according to claim 1, characterized in that: The distance between the longitudinally distributed vertical plane where the center point of the drill sleeve hole (301) of the drill sleeve (3) and the center point of the longitudinal positioning pin hole (203) are located 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 workpiece longitudinal positioning surface (102) and the radius of the longitudinal positioning pin hole (203); The spacing between the horizontally distributed vertical planes where the center point of the drill sleeve hole (301) of the drill sleeve (3) and the center point of the horizontal positioning pin hole (202) are located 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 horizontal positioning surface (101) and the radius of the horizontal positioning pin hole (202).

10. A processing system for an inspection block, characterized in that: A machining positioning device comprising an inspection block according to any one of claims 1 to 9, and a bench drill; The bench drill is used to perform a machining operation on a position on the inspection block blank (1-0) directly below the drill sleeve hole (301) of the drill sleeve (3) through the drill bit thereon, thereby machining to obtain a vertical through hole (104) in the workpiece.

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