PCD (Poly Crystal Diamond) cutter with replaceable cutting edge

Abstract

The utility model discloses a PCD (Poly Crystal Diamond) cutter with a replaceable blade, which comprises a blade body, and the top of the blade body extends into a connecting block; a bolt is slidably arranged in the connecting block, the inner end of the bolt extends into a clamping groove to form a clamping mechanism, the clamping groove is formed in the top end of the interior of the blade body, the top of the bolt is meshed with a gear, and the middle of the gear is in key connection with the middle of a rotating rod; the front end and the rear end of the rotating rod are connected into the connecting block through bearings, the top of the gear is meshed with a rack, and the rack slides in the connecting block. And a first spring is nested at the front end of the rotating rod. The PCD cutter with the blade replaceable is provided with the plug pin, the gear is driven to rotate through movement of the rack, then the gear rotates to drive the plug pin to move, then the plug pin is disengaged from clamping of the clamping groove, and therefore the blade body can be rapidly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of PCD cutters, in particular to a PCD cutter with replaceable blades. Background Art

[0002] PCD tools have the characteristics of high hardness, high compressive strength, good thermal conductivity and wear resistance. These characteristics enable it to achieve high processing accuracy and processing efficiency in high-speed cutting, so it performs well when processing materials with higher hardness;

[0003] Reference publication number CN114303660A is a tool for straw crushing and kneading equipment. It adopts a wedge-shaped connection structure by using high-strength fasteners and dovetail groove positioning. The dovetail groove ensures a firm installation while reducing the stress strength of the fixing bolts, making it easy to disassemble and replace. Countersunk holes are machined inside the replaceable blade, screw holes are machined inside the fixed blade, and high-strength fasteners are used for fastening and connection. Thread glue is applied at the same time. Since the bolts are completely installed inside the tool, the stress on the fixing bolts can be effectively reduced and the wear of the bolts can be avoided, making it easy to disassemble. However, the following problems still exist:

[0004] In the actual use of the above device, although the purpose of disassembly and assembly is achieved by bolts, thread glue needs to be used to fix the bolts and threads after they are connected, and the thread glue needs to be waited after injection so that the bolts and threads are stably fixed, and the injection of thread glue will also cause inconvenience and disassembly and assembly.

[0005] Therefore, we proposed a PCD tool with replaceable blades that can solve the above problems well. Utility Model Content

[0006] The purpose of the utility model is to provide a PCD tool with replaceable blades to solve the problem raised by the above-mentioned background technology that thread glue needs to be used to fix the bolts and threads after they are connected in the current market, and it is necessary to wait after the thread glue is injected so that the bolts and threads can be stably fixed, and the injection of thread glue will also cause inconvenience and disassembly problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PCD tool for replacing a blade, comprising a blade body, the top of the blade body extending into the interior of a connecting block;

[0008] Also includes:

[0009] A latch is slidably arranged inside the connecting block, and the inner end of the latch extends into the interior of the slot to form a locking mechanism, and the slot is arranged at the top of the interior of the blade body, a gear is meshed at the top of the latch, and the middle part of the gear is key-connected to the middle part of the rotating rod, and the front and rear ends of the rotating rod are connected to the interior of the connecting block through bearings, and a rack is meshed at the top of the gear, and the rack slides inside the connecting block.

[0010] Preferably, a first spring is embedded in the front end of the rotating rod, and the top of the first spring is connected to the inside of the connecting block, and the rear end of the first spring is connected to the front end surface of the gear.

[0011] Preferably, a handle is rotatably disposed at the outer end of the rack, and the handle slides inside the connecting block, and the outer end of the handle extends out of the connecting block.

[0012] Preferably, a limiting block is fixed to the inner end of the handle, and the outer end of the limiting block extends into the interior of the slide slot to form a locking mechanism, and the slide slot is provided inside the connecting block.

[0013] Preferably, a protrusion is slidably disposed inside the limit block, and the outer end of the protrusion is arranged in a semicircular shape.

[0014] Preferably, the outer end of the protrusion extends into the interior of the groove to form a locking mechanism, and the groove is opened inside the connecting block.

[0015] Preferably, the inner end of the protrusion is connected to a second spring, and the inner end of the second spring is connected to the inside of the limiting block.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the PCD tool with replaceable blade is easy to disassemble and assemble and has good stability. The blade body can be quickly replaced by moving the latch, and the locking effect can be achieved by turning the hand, thereby improving the stability of the latch after being connected to the slot. The specific contents are as follows:

[0017] (1) A latch is provided, and the movement of the rack drives the gear to rotate, and then the rotation of the gear drives the latch to move, and then the latch is disengaged from the engagement with the slot, so that the blade body can be quickly replaced;

[0018] (2) A handle is provided, and by rotating the handle, the handle drives the limit block to engage with the slide groove, and then the handle can fix the rack, thereby improving the stability of the engagement between the latch and the slot;

[0019] (3) A first spring is provided, the first spring is nested in the front end of the rotating rod, the top of the first spring is connected to the inside of the connecting block, and the rear end of the first spring is connected to the front end surface of the gear, so that the first spring can drive the gear to reverse, so that the latch can be automatically reset;

[0020] (4) A protrusion is provided, and the outer end of the protrusion extends into the interior of the groove to form a locking mechanism, and the groove is opened inside the connecting block, so that after the protrusion and the groove are locked, the locking stability between the limit block and the groove can be improved;

[0021] (5) A second spring is provided, and the second spring is connected to the inner end of the protrusion, and the inner end of the second spring is connected to the inside of the limiting block, so that the second spring can limit the protrusion, thereby improving the stability of the protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0023] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the gear of the utility model;

[0025] Figure 4 This is a schematic diagram of the front section structure of the limit block of the utility model;

[0026] Figure 5 This is a schematic diagram of the side section structure of the limit block of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the utility model after the hand is turned;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the handle of the utility model.

[0029] In the figure: 1. blade body; 2. connecting block; 3. latch; 4. slot; 5. gear; 6. rotating rod; 7. first spring; 8. rack; 9. handle; 10. limit block; 11. slide groove; 12. protrusion; 13. groove; 14. second spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1:

[0032] The utility model solves the problem that after the existing bolt and thread are connected, thread glue needs to be used for fixing, and the thread glue needs to wait after injection, so that the bolt and the thread are stably fixed, and the injection of thread glue also causes inconvenience and disassembly. The movement of the rack 8 can facilitate the disassembly and assembly of the blade body 1, and discloses:

[0033] A blade body 1, the top of which extends into the interior of a connecting block 2; further comprising: a latch 3 is slidably disposed inside the connecting block 2, and the inner end of the latch 3 extends into the interior of a card slot 4 to form a locking mechanism, and the card slot 4 is provided at the top of the interior of the blade body 1, a gear 5 is meshed at the top of the latch 3, and the middle portion of the gear 5 is key-connected to the middle portion of a rotating rod 6, and the front and rear ends of the rotating rod 6 are connected to the interior of the connecting block 2 through bearings, a rack 8 is meshed at the top of the gear 5, and the rack 8 slides inside the connecting block 2, a first spring 7 is nested at the front end of the rotating rod 6, and the top of the first spring 7 is connected to the interior of the connecting block 2, and the rear end of the first spring 7 is connected to the front end surface of the gear 5;

[0034] refer to Figures 1 to 3 When the blade body 1 needs to be replaced, the rack 8 is pressed so that the rack 8 can slide inside the connecting block 2, and then the rack 8 moves to drive the gear 5 to rotate, and then the gear 5 can be rotated through the rotating rod 6, and the rotation of the gear 5 will squeeze the first spring 7, so that the first spring 7 is compressed, and then the rotation of the gear 5 will drive the pin 3 to move, and then the pin 3 will move toward the inside of the connecting block 2, and the movement of the pin 3 will be separated from the engagement with the slot 4, and then the blade body 1 is pulled, and then the blade body 1 is separated from the connection with the connecting block 2, so that the blade body 1 can be quickly replaced, and the second spring 14 can drive the gear 5 to reverse, so that the gear 5 can drive the pin 3 to extend into the inside of the slot 4 to form an engagement, and then the blade body 1 can be quickly connected to the connecting block 2, so as to achieve the purpose of quick replacement;

[0035] Embodiment 2:

[0036] The utility model solves the problem that the rack 8 in the first embodiment is not stable enough inside the connecting block 2. The stability of the rack 8 can be improved by engaging the limit block 10 with the slide groove 11. The utility model discloses:

[0037] The outer end of the rack 8 is rotated with a hand 9, and the hand 9 slides inside the connecting block 2, and the outer end of the hand 9 extends out of the connecting block 2, the inner end of the hand 9 is fixed with a limit block 10, and the outer end of the limit block 10 extends into the inside of the slide groove 11 to form a clamping mechanism, and the slide groove 11 is opened inside the connecting block 2;

[0038] refer to Figure 1 , Figures 4 to 7 , by rotating the handle 9, the rotation of the handle 9 can drive the limit block 10 to rotate, and then the limit block 10 can rotate inside the slide groove 11, and then the limit block 10 is disengaged from the engagement with the slide groove 11, and then the handle 9 is pressed again, so that the handle 9 can drive the rack 8 to move, and by rotating the handle 9 in the opposite direction, the handle 9 can drive the limit block 10 to engage with the slide groove 11, so that the handle 9 can be fixed inside the connecting block 2, and then the movement of the rack 8 can be avoided, thereby improving the stability of the connection between the latch 3 and the card slot 4;

[0039] Embodiment three:

[0040] The utility model solves the problem that the engagement between the limit block 10 and the slide groove 11 in the second embodiment is not stable enough. The engagement between the convex block 12 and the groove 13 can improve the stability of the engagement between the limit block 10 and the slide groove 11.

[0041] A protrusion 12 is slidably disposed inside the limit block 10, and the outer end of the protrusion 12 is arranged in a semicircular shape. The outer end of the protrusion 12 extends into the interior of the groove 13 to form a locking mechanism, and the groove 13 is provided inside the connecting block 2. The inner end of the protrusion 12 is connected to a second spring 14, and the inner end of the second spring 14 is connected to the interior of the limit block 10;

[0042] refer to Figure 1 , Figures 4 to 7 The rotation of the limit block 10 will drive the protrusion 12 to rotate, and then the rotation of the protrusion 12 will squeeze the groove 13, so that the protrusion 12 is squeezed to slide into the inside of the limit block 10, and then the movement of the protrusion 12 will squeeze the second spring 14, and then the second spring 14 is compressed and stressed, and then the protrusion 12 is disengaged from the engagement with the groove 13, and then it is convenient for the limit block 10 to slide inside the slide groove 11, and the force of the second spring 14 can push the protrusion 12 to extend into the inside of the groove 13 to form an engagement, so that the stability of the engagement between the limit block 10 and the slide groove 11 can be improved.

[0043] Working principle: When using this kind of PCD tool with a replaceable blade, first refer to Figures 1 to 3 When the blade body 1 needs to be replaced, the rack 8 is pressed so that the rack 8 can slide inside the connecting block 2, and then the rack 8 moves to drive the gear 5 to rotate, and then the gear 5 can be rotated through the rotating rod 6, and then the rotation of the gear 5 will drive the latch 3 to move, and then the latch 3 will move toward the inside of the connecting block 2, and the movement of the latch 3 will be disengaged from the engagement with the slot 4, and then the blade body 1 is pulled, so that the blade body 1 can be quickly replaced, so that the gear 5 can drive the latch 3 to extend into the inside of the slot 4 to form an engagement, and then the blade body 1 can be quickly connected to the connecting block 2, so as to achieve the purpose of quick replacement;

[0044] refer to Figure 1 , Figures 4 to 7 By rotating the handle 9, the rotation of the handle 9 can drive the limit block 10 to rotate, and then the handle 9 is pressed again, so that the handle 9 can drive the rack 8 to move, and by rotating the handle 9 in the opposite direction, the handle 9 can drive the limit block 10 to engage with the slide groove 11, and then the movement of the rack 8 can be avoided, thereby improving the stability of the connection between the latch 3 and the slot 4;

[0045] refer to Figure 1 , Figures 4 to 7 The rotation of the limit block 10 will drive the protrusion 12 to rotate, and then the rotation of the protrusion 12 will be squeezed with the groove 13, and then the movement of the protrusion 12 will squeeze the second spring 14, which will facilitate the sliding of the limit block 10 inside the slide groove 11, and the force of the second spring 14 can push the protrusion 12 into the interior of the groove 13 to form an engagement, thereby improving the stability of the engagement between the limit block 10 and the slide groove 11.

[0046] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PCD tool with a replaceable blade, comprising a blade body (1), wherein the top of the blade body (1) extends into the interior of a connecting block (2); It is characterized in that Also includes: A latch (3) is slidably mounted inside the connection block (2), and the inner end of the latch (3) extends into the interior of a slot (4) to form a locking mechanism, and the slot (4) is provided at the top of the interior of the blade body (1), a gear (5) is meshed at the top of the latch (3), and the middle part of the gear (5) is key-connected to the middle part of a rotating rod (6), and the front and rear ends of the rotating rod (6) are connected to the interior of the connection block (2) through bearings, and a rack (8) is meshed at the top of the gear (5), and the rack (8) slides inside the connection block (2).

2. A PCD tool with replaceable blade according to claim 1, characterized in that: A first spring (7) is nested at the front end of the rotating rod (6), the top of the first spring (7) is connected to the inside of the connecting block (2), and the rear end of the first spring (7) is connected to the front end surface of the gear (5).

3. A PCD tool with replaceable blade according to claim 1, characterized in that: A handle (9) is rotatably mounted on the outer end of the rack (8), and the handle (9) slides inside the connection block (2), and the outer end of the handle (9) extends out of the connection block (2).

4. A PCD tool with replaceable blade according to claim 3, characterized in that: A limiting block (10) is fixed to the inner end of the handle (9), and the outer end of the limiting block (10) extends into the interior of the slide groove (11) to form a locking mechanism, and the slide groove (11) is arranged inside the connecting block (2).

5. A PCD tool with replaceable blade according to claim 4, characterized in that: A protrusion (12) is slidably disposed inside the limiting block (10), and the outer end of the protrusion (12) is arranged in a semicircular shape.

6. A PCD tool with replaceable blade according to claim 5, characterized in that: The outer end of the protrusion (12) extends into the interior of the groove (13) to form a locking mechanism, and the groove (13) is provided inside the connecting block (2).

7. A PCD tool with replaceable blade according to claim 6, characterized in that: The inner end of the protrusion (12) is connected to a second spring (14), and the inner end of the second spring (14) is connected to the interior of the limiting block (10).

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