Bolt rod part drilling clamp and method

Abstract

The invention relates to the technical field of machining, in particular to a bolt rod drilling clamp and method. The clamp comprises a bottom plate and a V-shaped block support; the V-shaped block support is mounted on the top surface of the bottom plate; a plurality of V-shaped grooves are formed in the top surface of the V-shaped block support and are sequentially arranged at intervals from left to right; a plurality of pressing blocks are installed on the top face of the V-shaped block support, and every two V-shaped grooves are correspondingly provided with one pressing block. The middle of each pressing block is installed through a pressing screw. According to the drilling method, the clamp is adopted for clamping a bolt product to be machined. The clamp can clamp a plurality of bolt products to be machined at a time, so that the drilling efficiency of bolt rod parts is improved. The V-shaped block support and the pressing block are used for limiting and pressing bolt products, stability is better, two bolt products can be pressed at the same time through one pressing plate, only the pressing screws need to be tightened during pressing, and compared with the prior art, operation is easy and convenient, and the purpose of rapid clamping is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a bolt rod drilling clamp and method. BACKGROUND

[0002] A bolt is a cylindrical fastener with threads that is used in conjunction with a nut. It is a type of fastener that consists of a head and a shank (a cylindrical body with external threads), which is used in conjunction with a nut to fasten and connect two parts with through holes. This type of connection is called bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so bolted connection is a detachable connection.

[0003] For some bolts, drilling is required on the shank. When drilling, a clamp is used to clamp the screw rod. In the prior art, a screw rod drilling clamp is disclosed in patent No. CN214868889U. By tightening the abutting block, the front and rear blocks clamp the screw rod, limiting the axial movement of the screw rod, and the spline block limits the rotation of the screw rod. This clamp can firmly clamp the screw rod, facilitating drilling of the screw rod, and is easy to disassemble, improving processing efficiency. Moreover, the spline block of the clamp can be replaced to adapt to screw rods with different threads.

[0004] However, the prior art has the following problems: (1) The clamp in the prior art can only clamp one screw rod workpiece at a time, which affects the processing efficiency.

[0005] (2) When clamping, two clamps are needed to clamp the two sides of the screw rod workpiece, i.e., the first step is to tighten the abutting block, and the second step is to drive the rotating clamp to clamp the screw rod workpiece. The clamp operation is relatively complicated and cannot achieve the purpose of quick clamping. SUMMARY

[0006] The main purpose of the present application is to provide a bolt rod drilling clamp and method to solve the above technical problems.

[0007] To achieve the above purpose, in the first aspect, the present application provides a bolt rod drilling clamp, comprising a bottom plate and a V-shaped block support; the V-shaped block support is installed on the top surface of the bottom plate; a plurality of V-shaped grooves are arranged on the top surface of the V-shaped block support, and the V-shaped grooves are arranged in sequence and spaced from left to right; a plurality of pressing blocks are installed on the top surface of the V-shaped block support, and one pressing block is arranged corresponding to every two V-shaped grooves; the middle part of each pressing block is installed by a pressing screw.

[0008] Preferably, a plurality of guide columns are inserted in the V-shaped block support; one guide column is arranged corresponding to each pressing block; a guide hole is arranged at one end of the pressing block; the guide column and the guide hole are in sliding fit.

[0009] Preferably, the distance between the top end of the guide column and the top surface of the V-shaped block support is L, and the thickness of the pressing block is t; L is greater than or equal to 3t.

[0010] Preferably, a spring is sleeved on the screw rod section of the pressing screw; the upper end of the spring abuts against the bottom surface of the pressing block, and the lower end abuts against the top surface of the V-shaped block support.

[0011] Preferably, two arc-shaped grooves are arranged on the lower surface of the pressing block, and the two arc-shaped grooves are located directly above the two V-shaped grooves, respectively.

[0012] Preferably, a positioning plate is installed on the front side of the V-shaped block support, and the positioning plate seals the front ends of all the V-shaped grooves.

[0013] Preferably, a reinforcing boss is arranged at the middle position of the top surface of the pressing block; the root of the reinforcing boss is provided with a transition fillet; a countersunk hole is arranged at the center of the reinforcing boss; the pressing screw passes through the countersunk hole and is screwed into the threaded hole in the top surface of the V-shaped block support.

[0014] Preferably, U-shaped grooves are arranged at the left and right ends of the bottom plate, respectively.

[0015] Preferably, the number of V-shaped grooves is six, and the number of pressing blocks is three; a fillet is arranged at the rear end of each V-shaped groove.

[0016] In a second aspect, the present application further provides a bolt rod drilling method, which adopts the clamp and comprises the following steps: S1, fixing and installing the clamp on the workbench of a numerical control main drilling machine; S2, placing the rod part of a bolt product to be processed on the V-shaped groove, and the head of the bolt faces the rear end of the clamp and is located outside the V-shaped groove; S3, tightening the pressing screw, so that the pressing block presses the rod part of the bolt product to be processed; the first pressing plate simultaneously presses the rod parts of the first and second bolt products to be processed; the second pressing plate simultaneously presses the rod parts of the third and fourth bolt products to be processed; and the pressing of the rod parts of all the bolt products to be processed is completed in this way; S4, starting the numerical control drilling machine, and drilling the rod parts of the bolt products from left to right in sequence; after the drilling of the corresponding two bolt products corresponding to the previous pressing plate is completed, the drilling of the corresponding two bolt products pressed by the next pressing plate is performed; the corresponding two bolt products corresponding to the previous pressing plate are taken out, and new bolt products to be processed are clamped and mounted. S5. After the drilling of the two bolt products corresponding to the rightmost pressure plate is completed, the drill spindle moves to the top of the leftmost end of the V-block support and drills the two bolt products held by the leftmost pressure plate. At this time, the two bolt products corresponding to the rightmost pressure plate are taken out and a new bolt product to be processed is clamped.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: (1) Using the fixture provided by the present invention, multiple bolt products to be processed can be clamped at one time, which is conducive to improving the efficiency of drilling the bolt shank.

[0018] (2) In this invention, the V-shaped block support and pressure block restrict the clamping bolt product, which has better stability. Moreover, a single pressure plate can clamp two bolt products at the same time. When clamping, only the clamping screw needs to be tightened. Compared with the prior art, the operation is simple and convenient, and the purpose of quick clamping is achieved.

[0019] (3) In this invention, by utilizing the sliding fit between the guide post and the guide hole on the pressure block, the pressure block can be ensured to move smoothly up and down. At the same time, by sleeved with a spring on the screw section of the clamping screw, when the clamping screw is loosened, the spring can push the pressure block to move upward, thereby allowing the processed bolt product to be pulled out. Therefore, the operator can complete the disassembly and clamping of the bolt product by quickly loosening or tightening the clamping screw. The whole process is efficient and smooth, which is conducive to improving the efficiency of drilling the bolt shank. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A three-dimensional structural diagram of the clamp provided by the present invention; Figure 2 This is a front view of the clamp provided by the present invention; Figure 3 This is a top view of the clamp provided by the present invention; Figure 4 Left view of the clamp provided by the present invention; Figure 5 This is the front view of the base plate; Figure 6 This is a top view of the base plate; Figure 7 This is the front view of the positioning plate; Figure 8 This is a top view of the positioning plate; Figure 9 This is the front view of the pressure block; Figure 10 This is a top view of the briquette.

[0022] Explanation of reference numerals: 1. Base plate; 1a. U-shaped groove; 2. V-shaped block support; 2a. V-shaped groove; 2b. Rounded corner; 3. Positioning plate; 4. Pressure block; 4a. Guide hole; 4b. Arc groove; 4c. Reinforcing boss; 4d. Transition fillet; 4e. Countersunk through hole; 5. Guide post; 6. Spring; 7. Clamping screw; 8. First screw; 9. Second screw. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0026] As shown in the accompanying drawings, this embodiment provides a bolt shank drilling fixture, including a base plate 1 and a V-block support 2; the V-block support 2 is fastened to the top surface of the base plate 1 by three first screws 8; a plurality of V-grooves 2a are provided on the top surface of the V-block support 2, and the plurality of V-grooves 2a are arranged alternately from left to right; the V-grooves 2a are used to place the shank of the bolt product to be processed.

[0027] Multiple pressure blocks 4 are installed on the top surface of the V-shaped block support 2, with one pressure block 4 corresponding to every two V-shaped grooves 2a; each pressure block 4 is installed in the middle by a clamping screw 7. A single pressure plate 4 can simultaneously clamp the rods of two bolt products; during clamping, only the clamping screw 7 needs to be tightened. Specifically, in this embodiment, there are six V-shaped grooves 2a and three pressure blocks 4.

[0028] Combination Figure 1 , Figure 9 and Figure 10 As shown, multiple guide posts 5 are inserted into the V-shaped block support 2; and each pressure block 4 is provided with one guide post 5; a guide hole 4a is provided at one end of the pressure block 4; the guide post 5 is slidably engaged with the guide hole 4a. The guide post 5 and the guide hole 4a cooperate to guide the up-and-down movement of the pressure block 4. Furthermore, the distance between the top of the guide post 5 and the top surface of the V-shaped block support 2 is L, and the thickness of the pressure block 4 is t; satisfying: L≥3t, this dimension is limited to prevent the pressure block 4 from falling off the guide post 5.

[0029] Combination Figure 1 and Figure 2 As shown, a spring 6 is fitted onto the screw section of the clamping screw 7; the upper end of the spring 6 abuts against the bottom surface of the pressure block 4, and the lower end abuts against the top surface of the V-block support 2. When the clamping screw 7 is loosened, the spring 6 can push the pressure block 4 upward, thereby allowing the processed bolt product to be pulled out. Furthermore, when the clamping screw 7 is in the loosened state, under the action of the spring 6, the pressure block 4 remains spaced from the V-block support 2, facilitating the insertion of the bolt product to be processed from the rear end of the V-groove 2a.

[0030] Combination Figure 2 and Figure 9 As shown, two arc-shaped grooves 4b are provided on the lower surface of the pressure block 4, and the two arc-shaped grooves 4b are respectively located directly above the two V-shaped grooves 2a. When the shank of the bolt product to be processed is pressed, the arc-shaped grooves 4b are used to press against the shank of the bolt product.

[0031] Combination Figure 1As shown, a positioning plate 3 is installed on the front side of the V-block support 2, and the positioning plate 3 seals the front ends of all V-grooves 2a. Specifically, the positioning plate 3 is fastened to the V-block support 2 by three second screws 9. When clamping the bolt product to be processed, the shank of the bolt product is inserted into the V-groove 2a from the rear end of the V-block support 2. When the shank of the bolt product abuts against the positioning plate 3, axial positioning of the bolt product is achieved. In addition, a rounded corner 2b is provided on the rear end edge of each V-groove 2a, which serves as a guide when the bolt product is inserted.

[0032] Combination Figure 9 As shown, a reinforcing boss 4c is provided at the center of the top surface of the pressure block 4; a transition fillet 4d is provided at the root of the reinforcing boss 4c; a countersunk through hole 4e is provided at the center of the reinforcing boss 4c; the clamping screw 7 passes through the countersunk through hole 4e and is screwed into the threaded hole on the top surface of the V-block support 2. By providing the reinforcing boss 4c, it serves two purposes: firstly, it increases strength, and secondly, it facilitates the machining of the countersunk through hole 4e.

[0033] Combination Figure 1 As shown, U-shaped grooves 1a are provided at the left and right ends of the base plate 1 respectively. The purpose of providing U-shaped grooves 1a is to facilitate fixing the base plate 1 on the worktable of the CNC drilling machine.

[0034] Secondly, this embodiment also provides a method for drilling holes in the bolt shank, using the above-mentioned fixture, including the following steps: S1. Fix the fixture to the worktable of the CNC main drilling machine; specifically, use the U-shaped groove 1a on the base plate 1 to fix the clamping fixture to the worktable of the CNC drilling machine by bolt fixing.

[0035] S2. Place the shank of the bolt to be processed on the V-groove 2a, with the head of the bolt facing the rear end of the fixture and located outside the V-groove 2a. The specific operation is as follows: loosen the clamping screw 7, and under the action of the spring 6, the pressure block 4 and the V-block support 2 are in a spaced-out state. Insert the bolt to be processed from the rear end of the V-groove 2a until the end of the bolt shank abuts against the positioning plate 3, forming an axial limit.

[0036] S3. Tighten the clamping screw 7 so that the clamping block 4 clamps the shank of the bolt product to be processed. Counting from left to right, the first clamping plate 4 clamps the shank of the first and second bolt products to be processed at the same time; the second clamping plate 4 clamps the shank of the third and fourth bolt products to be processed at the same time, and so on. The clamping plate 4 is used to clamp the shank of the bolt products to be processed in all the V-grooves 2a on the V-block support 2.

[0037] S4. Start the CNC drilling machine and drill holes in the shank of each bolt product from left to right. After drilling the two bolt products corresponding to the previous pressure plate 4, and drilling the two bolt products clamped by the next pressure plate 4, take out the corresponding two bolt products corresponding to the previous pressure plate 4 and clamp the new bolt products to be processed. S5. After the drilling of the two bolt products corresponding to the rightmost pressure plate 4 is completed, the drill spindle moves to the top of the leftmost end of the V-block support 2 and drills the two bolt products held by the leftmost pressure plate 4. At this time, the two bolt products corresponding to the rightmost pressure plate 4 are taken out and a new bolt product to be processed is clamped.

[0038] By adopting the above methods, continuous processing of products was achieved, the utilization rate of drilling equipment was improved, and production costs were reduced.

[0039] The fixture provided by this invention is highly versatile and can be applied to drilling the shank of bolts of various specifications, thus having broad prospects for promotion and application.

[0040] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A bolt shank drilling fixture, characterized in that, Includes a base plate (1) and a V-block support (2); The V-shaped block support (2) is installed on the top surface of the base plate (1); Multiple V-grooves (2a) are provided on the top surface of the V-block support (2), and the multiple V-grooves (2a) are arranged alternately from left to right; Multiple pressure blocks (4) are installed on the top surface of the V-shaped block support (2), and one pressure block (4) is set for every two V-shaped grooves (2a); the middle of each pressure block (4) is installed by a clamping screw (7).

2. The bolt shank drilling fixture according to claim 1, characterized in that, Multiple guide posts (5) are inserted on the V-shaped block support (2); and each pressure block (4) is provided with a corresponding guide post (5); a guide hole (4a) is provided at one end of the pressure block (4); the guide post (5) and the guide hole (4a) are slidably engaged.

3. A bolt shank drilling fixture according to claim 2, characterized in that, The distance between the top of the guide post (5) and the top surface of the V-shaped block support (2) is L, and the thickness of the pressure block (4) is t; satisfying: L≥3t.

4. A bolt shank drilling fixture according to claim 1, characterized in that, A spring (6) is sleeved on the screw section of the clamping screw (7); the upper end of the spring (6) abuts against the bottom surface of the pressure block (4), and the lower end abuts against the top surface of the V-block support (2).

5. A bolt shank drilling fixture according to claim 1, characterized in that, Two arc-shaped grooves (4b) are provided on the lower surface of the pressure block (4), and the two arc-shaped grooves (4b) are located directly above the two V-shaped grooves (2a).

6. A bolt shank drilling fixture according to claim 1, characterized in that, A positioning plate (3) is installed on the front side of the V-shaped block support (2), and the positioning plate (3) seals the front end of all V-shaped grooves (2a).

7. A bolt shank drilling fixture according to claim 1, characterized in that, A reinforcing boss (4c) is provided at the middle position of the top surface of the pressure block (4); a transition fillet (4d) is provided at the root of the reinforcing boss (4c). A countersunk hole (4e) is provided at the center of the reinforcing boss (4c); the clamping screw (7) passes through the countersunk hole (4e) and is screwed into the threaded hole on the top surface of the V-block support (2).

8. A bolt shank drilling fixture according to claim 1, characterized in that, U-shaped grooves (1a) are respectively provided at the left and right ends of the base plate (1).

9. A bolt shank drilling fixture according to claim 1, characterized in that, The number of V-grooves (2a) is six, and the number of pressure blocks (4) is three; a rounded corner (2b) is provided on the rear port edge of each V-groove (2a).

10. A method for drilling holes in the shank of a bolt, characterized in that, The clamp according to any one of claims 1 to 9 comprises the following steps: S1. Fix the fixture on the worktable of the CNC main drilling machine; S2. Place the shank of the bolt product to be processed on the V-groove (2a), with the head of the bolt facing the rear end of the fixture and located outside the V-groove (2a); S3. Tighten the clamping screw (7) so that the clamping block (4) clamps the shank of the bolt product to be processed. Counting from left to right, the first clamping plate (4) clamps the shank of the first and second bolt products to be processed at the same time; the second clamping plate (4) clamps the shank of the third and fourth bolt products to be processed at the same time, and so on, to complete the clamping of the shank of all bolt products to be processed. S4. Start the CNC drilling machine and drill holes in the rods of each bolt product from left to right. After the drilling of the two bolt products corresponding to the previous pressure plate (4) is completed, and the drilling of the two bolt products pressed by the next pressure plate (4) is carried out, the corresponding two bolt products corresponding to the previous pressure plate (4) are taken out and the new bolt products to be processed are clamped. S5. After the rightmost pressure plate (4) has completed drilling the two bolt products, the drill spindle moves to the top of the leftmost end of the V-block support (2) and drills the two bolt products held by the leftmost pressure plate (4). At this time, the two bolt products corresponding to the rightmost pressure plate (4) are taken out and a new bolt product to be processed is clamped.

Images