Accurate grinding machining device for inner hole of impact head of electric wrench

Abstract

The utility model discloses an electric wrench impactor head inner hole accurate grinding machining device which comprises a cutter body, a mounting groove is formed in the cutter body, a cutter head is detachably connected in the mounting groove, a positioning block is slidably connected to the bottom face of the mounting groove, a gap exists between the positioning block and the inner top face of the mounting groove, and a clamping groove is formed in the cutter head. The top surface of the mounting groove is slidably connected with an abutting block, and a gap is formed between the abutting block and the positioning hole, so that when the blade is mounted, the abutting block slides to enlarge the gap, the tool bit can smoothly enter the mounting groove, the positioning block further slides to enlarge the gap, the positioning block is conveniently clamped into the clamping groove, and the tool bit is limited to slide in the depth direction of the mounting groove; and finally, the abutting block slides to abut against the tool bit so as to fix the tool bit, the tool bit is prevented from sliding up and down, operation is convenient and fast through the design, and the time for disassembling and replacing the tool bit is effectively shortened.

Description

Technical Field

[0001] This utility model belongs to the field of parts processing and relates to a device for machining the inner hole of an impact head, and in particular to a device for precision grinding the inner hole of an electric wrench impact head. Background Technology

[0002] When processing electric wrench impact heads, CNC lathes are usually used for precision machining and surface treatment. CNC lathes are one of the most widely used CNC machine tools. They are mainly used for cutting the inner and outer cylindrical surfaces, inner and outer conical surfaces with arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads of shaft or disc parts. They can also perform grooving, drilling, reaming, boring, and other operations.

[0003] For example, the four-sided prism turning tool and CNC lathe disclosed in CN212398156U include a cutting insert and a tool shank. The tool shank includes a clamping part and a tool head. The tool head is formed by the outer peripheral surface of the tool head, a first clearance surface, a second clearance surface, a third clearance surface, and a mounting surface. The tool head has a sharp edge at the intersection of the first clearance surface and the second clearance surface. The angle between the intersection lines of the first clearance surface, the second clearance surface, and any surface extending from the sharp edge in a direction parallel to the mounting surface is 80 degrees. When the cutting insert is mounted on the tool head, it has a first base surface coplanar with the first clearance surface and a second base surface coplanar with the second clearance surface. The clamping part is provided with an adjustment component near the tool head.

[0004] Existing impact drills typically use drilling tools, such as the aforementioned tools, for drilling. However, changing the drill bit is cumbersome and time-consuming. Utility Model Content

[0005] This utility model provides a device for precision grinding of the inner hole of an electric wrench impact head, which enables quick and convenient replacement of the wrench head.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a precision grinding device for the inner hole of an electric wrench impact head, comprising a blade body, characterized in that the blade body has an installation groove, the blade head is detachably connected to the installation groove, a positioning block is slidably connected to the bottom surface of the installation groove, a gap exists between the positioning block and the top surface of the installation groove, and a slot is provided on the blade head to facilitate the positioning block's insertion. When the blade head is installed, the positioning block slides, the gap increases, and the positioning block is inserted into the slot. A stop block is slidably connected to the top surface of the installation groove, a gap exists between the stop block and the positioning hole, and when the positioning block is inserted into the slot, the stop block slides and forms abutment with the blade head.

[0007] A further preferred technical solution of this utility model is as follows: the positioning block includes a sliding plate and a locking block fixedly connected to the top surface of the sliding plate. The locking block and the locking groove form a locking connection. A groove is provided on the bottom surface of the mounting groove. The sliding plate slides in the groove. One end of the sliding plate extends out of the groove.

[0008] A further preferred embodiment of this utility model is that the card block has an arc-shaped surface.

[0009] A further preferred embodiment of this invention is that the card block is a rectangular block.

[0010] A further preferred embodiment of this utility model is as follows: a plurality of springs are fixedly connected between the groove and the slide plate, and when the gap increases, the springs deform.

[0011] A further preferred technical solution of this utility model is as follows: a sliding groove is provided on the top surface of the mounting groove to facilitate the sliding of the abutment block, and a threaded hole communicating with the sliding groove is provided on the blade body. A fixing bolt is threadedly connected to the threaded hole. When the adjusting bolt is rotated, the abutment block slides and the gap changes.

[0012] A further preferred embodiment of this utility model is as follows: a stop plate that slides within a groove is fixedly connected to the top surface of the stop block, and the bottom surface of the fixing bolt abuts against the stop plate.

[0013] A further preferred technical solution of this utility model is: a plurality of springs are fixedly connected between the abutment plate and the slide groove, and the springs deform when the gap becomes larger.

[0014] A further preferred embodiment of this utility model is that the abutment block and the locking block are staggered.

[0015] A further preferred embodiment of this utility model is: a limiting block is fixedly connected to the bottom surface of the fixing bolt.

[0016] Compared with the prior art, this utility model includes a blade body with a mounting groove. A blade head is detachably connected to the mounting groove. A positioning block is slidably connected to the bottom surface of the mounting groove, and there is a gap between the positioning block and the top surface of the mounting groove. A slot is formed on the blade head, and a stop block is slidably connected to the top surface of the mounting groove. There is a gap between the stop block and the positioning hole. Therefore, when installing the blade, sliding the stop block increases the gap, allowing the blade head to smoothly enter the mounting groove. Further sliding the positioning block increases the gap, making it easier for the positioning block to engage with the slot, thereby restricting the blade head from sliding along the depth direction of the mounting groove. Finally, sliding the stop block makes it abut against the blade head, thus fixing the blade head and preventing it from sliding up and down. This design is convenient and quick to operate, effectively shortening the time for disassembling and replacing the blade head. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 For the explosion of this utility model Figure 1 ;

[0020] Figure 3 For the explosion of this utility model Figure 2 ;

[0021] Figure 4 This is a structural diagram of the blade body of this utility model.

[0022] In the diagram: 1. Blade body; 2. Blade head; 3. Fixing bolt; 4. Gap; 5. Groove; 6. Threaded hole; 7. Slide plate; 8. Locking block; 9. Support plate; 10. Supporting block; 11. Spring 2; 12. Spring 1; 13. Locking groove; 14. Slide groove; 15. Mounting groove. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0024] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0025] Figures 1-4 As shown, an electric wrench impact head inner hole precision grinding device includes a cutter body 1, a mounting groove 15 on the cutter body 1, a cutter head 2 detachably connected to the mounting groove 15, a positioning block slidably connected to the bottom surface of the mounting groove 15, the positioning block including a sliding plate 7 and a locking block 8 fixedly connected to the top surface of the sliding plate 7, a gap 4 between the locking block 8 and the top surface of the mounting groove 15, a locking groove 13 on the cutter head 2 to facilitate the locking block 8 to be engaged, when the cutter head 2 is installed, the positioning block slides, the gap 4 increases and the positioning block is engaged in the locking groove 13, a groove 5 is formed on the bottom surface of the mounting groove 15, the sliding plate 7 slides in the groove 5, one end of the sliding plate 7 extends out of the groove 5.

[0026] Figures 1-4As shown, when assembling the cutter head 2 and the conductor, press down on one end of the sliding plate 7 located outside the groove 5. At this time, the sliding plate 7 drives the locking block 8 to slide downward together. As the sliding gap 4 of the locking block 8 increases, the cutter head 2 is further inserted into the gap 4 until one end of the cutter head 2 is located in the mounting groove 15 and forms an abutment with the inner wall of the mounting groove 15. At this time, the locking groove 13 and the locking block 8 are aligned. Then, slide the cutter head 2 downward so that the locking block 8 is locked into the locking groove 13 and slide the sliding plate 7 upward so that the locking block 8 moves upward and the gap 4 decreases. At this time, the cutter head 2 is initially restricted in the mounting groove 15, and the locking block 8 can effectively restrict the back-and-forth sliding of the cutter head 2.

[0027] Figures 1-4 As shown, the card block 8 has an arc-shaped surface, which makes it easy for the card slot 13 on the cutter head 2 to be inserted into the card block 8.

[0028] Figures 1-4 As shown, the locking block 8 is a rectangular block, which can prevent the cutter head 2 from rotating during use.

[0029] Figures 1-4 As shown, several springs 12 are fixedly connected between the groove 5 and the slide plate 7. When the gap 4 increases, the springs 12 deform. When the slide plate 7 is pressed down, the springs 12 deform. When the force of pressing the slide plate 7 is removed, the deformed springs can push the slide plate 7 and the locking block 8 to reset, thereby preventing the cutter head 2 from separating from the locking block 8. This design plays the role of pushing the locking block 8 and the slide plate 7 to reset.

[0030] Figures 1-4 As shown, a stop block 10 is slidably connected to the top surface of the mounting groove 15. The stop block 10 and the locking block 8 are staggered. There is a gap between the stop block 10 and the positioning hole. When the positioning block is locked into the locking groove 13, the stop block 10 slides and forms abutment with the cutter head 2. A sliding groove 14 is provided on the top surface of the mounting groove 15 to facilitate the sliding of the stop block 10. A threaded hole 6 communicating with the sliding groove 14 is provided on the cutter body 1. A fixing bolt 3 is threadedly connected in the threaded hole 6. When the adjusting bolt is rotated, the stop block 10 slides and the gap changes.

[0031] Figures 1-4 As shown, when assembling the cutter head 2 and the cutter body 1, first rotate the fixing bolt 3 and slide the abutment block 10 upward to increase the gap, making it easier for the cutter head 2 to enter the mounting groove 15. Then slide the sliding plate 7 to lock the locking block 8 into the locking groove 13. Further rotate the fixing bolt 3 in the opposite direction. At this time, the fixing bolt 3 pushes the abutment block 10 downward until the abutment block 10 forms contact with the surface of the cutter head 2. Then continue to rotate the fixing bolt 3 until the abutment block 10 and the inner wall of the mounting groove 15 lock the cutter head 2. At this time, the cutter head 2 is installed. The abutment block 10 plays the role of fixing the cutter head 2 and preventing the cutter head 2 from sliding up and down during cutting. Moreover, this design is convenient, quick and easy to operate and firmly fixed.

[0032] Figures 1-4As shown, a stop plate 9 is fixedly connected to the top surface of the stop block 10 and slides within the slide groove 14. The bottom surface of the fixing bolt 3 abuts against the stop plate 9. The stop plate 9 increases the contact area between the stop block 10 and the fixing bolt 3, making it easier for the fixing bolt 3 to push the stop block 10 to slide.

[0033] Figures 1-4 As shown, a limiting block is fixedly connected to the bottom surface of the fixing bolt 3, which can limit the interaction range of the fixing bolt 3 when it rotates, and prevent the fixing bolt 3 from separating from the threaded hole 6 when it rotates, thus affecting its use.

[0034] Figures 1-4 As shown, several springs 11 are fixedly connected between the abutment plate 9 and the slide groove 14. When the gap becomes larger, the springs 11 deform. Therefore, when the abutment plate 9 slides downward, the springs 11 deform. When the fixing bolt 3 is unscrewed, the deformed springs 11 can drive the abutment plate 9 and the abutment block 10 to return to their original positions, thus facilitating the next use.

[0035] The present invention provides a device for precision grinding of the inner hole of an electric wrench impact head. Specific examples have been used to illustrate the principle and implementation of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the present invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A device for precision grinding of the inner hole of an electric wrench impact head, comprising a cutting tool body, characterized in that, The blade body has a mounting groove, and the blade head is detachably connected to the mounting groove. A positioning block is slidably connected to the bottom surface of the mounting groove, and there is a gap between the positioning block and the top surface of the mounting groove. The blade head has a slot to facilitate the positioning block to be inserted. When the blade head is installed, the positioning block slides, the gap increases, and the positioning block is inserted into the slot. A stop block is slidably connected to the top surface of the mounting groove, and there is a gap between the stop block and the positioning hole. When the positioning block is inserted into the slot, the stop block slides and forms abutment with the blade head.

2. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 1, characterized in that, The positioning block includes a sliding plate and a locking block fixedly connected to the top surface of the sliding plate. The locking block and the locking groove are engaged. A groove is provided on the bottom surface of the mounting groove. The sliding plate slides in the groove, and one end of the sliding plate extends out of the groove.

3. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 2, characterized in that, The card block has an arc-shaped surface.

4. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 2, characterized in that, The card block is a rectangular block.

5. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 2, characterized in that, Several springs are fixedly connected between the groove and the slide plate. When the gap increases, the springs deform.

6. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 2, characterized in that, The mounting groove has a sliding groove on its top surface to facilitate the sliding of the abutment block. The blade body has a threaded hole that communicates with the sliding groove. A fixing bolt is threaded into the threaded hole. When the adjusting bolt is rotated, the abutment block slides and the gap changes.

7. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 6, characterized in that, A sliding abutment plate is fixedly connected to the top surface of the abutment block, and the bottom surface of the fixing bolt abuts against the abutment plate.

8. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 7, characterized in that, Several springs are fixedly connected between the abutment plate and the slide groove. When the gap increases, the springs deform.

9. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 6, characterized in that, The abutment block and the card block are staggered.

10. The device for precision grinding of the inner hole of an electric wrench impact head according to claim 6, characterized in that, A limit block is fixedly connected to the bottom surface of the fixing bolt.

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