Positioning clamp for grinding integral PCBN cutter

Abstract

A positioning clamp for grinding an integral PCBN cutter comprises a base, two U-shaped supports are fixedly connected to the upper surface of the base, displacement plates are slidably connected to the surfaces of the sides, close to each other, of two vertical plates of the U-shaped supports, and cylinders are fixedly connected to the surfaces of the sides, close to each other, of the two displacement plates respectively. Sliding rods are arranged on the surfaces of the close sides of the two cylinders correspondingly, the surfaces of the opposite sides of the two sliding rods slidably penetrate out of the surfaces of the opposite sides of the two displacement plates correspondingly, sliding grooves are formed in the upper surfaces of the two U-shaped supports correspondingly, and the surfaces of the close sides of the two sliding grooves extend out of the surfaces of the close sides of the two U-shaped supports correspondingly; by means of the structure, PCBN tools of different specifications do not need to be independently adjusted according to the sizes of the tools when replaced, it is only needed to confirm that all the sliding rods make contact with the PCBN tools, and convenience and efficiency are improved when the PCBN tools are positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of PCBN tool positioning fixtures, in particular to a positioning fixture for grinding an integral PCBN tool. Background Art

[0002] PCBN tools are artificial cubic boron nitride tools that can maintain high hardness at high temperatures. They are mainly used for processing iron parts. When grinding PCBN tools, first place the tool in the positioning groove and then turn the hexagon socket screw to position the tool.

[0003] For example, the Chinese utility model patent with patent publication number CN218534115U includes a clamp body, a positioning groove is provided on the top of the clamp body, a movable block is slidably connected to the side of the clamp body close to the positioning groove, and the left and right sides of the movable block are threadedly connected to positioning screws, the outer surface of one end of the positioning screw is fixedly connected to a first torque, the inside of the first torque is slidably connected to a support rod, and the side of the movable block away from the positioning groove is rotatably connected to an adjusting screw.

[0004] This patent can achieve the purpose of simultaneously pressing the PCBN tool with four positioning screws by setting a movable block and an adjusting screw, thereby promoting the positioning speed of the device and greatly improving the work efficiency. By setting a first torque and a support rod, the operation is convenient, and the purpose of allowing the user to manually rotate the positioning screw is achieved, thereby increasing the convenience of using the device. However, when clamping and positioning PCBN tools of different specifications, the staff needs to adjust the positioning screw separately through the first torque, which has many operation steps, resulting in low efficiency when clamping and positioning PCBN tools of different specifications. There are certain shortcomings. In view of this, we propose a positioning fixture for integral PCBN tool grinding. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an integral PCBN tool grinding positioning fixture, which can solve the problem of requiring separate adjustment of positioning screws when clamping and positioning PCBN tools of different specifications.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning fixture for integral PCBN tool grinding, comprising a base, the upper surface of the base is fixedly connected to two U-shaped brackets, the side surfaces of the two vertical plates of the U-shaped bracket are slidably connected to a displacement plate, the side surfaces of the two displacement plates are respectively fixedly connected to cylinders, the side surfaces of the two cylinders are respectively provided with sliding rods, the side surfaces opposite to the two sliding rods respectively slide through the side surfaces opposite to the two displacement plates, the upper surfaces of the two U-shaped brackets are respectively provided with sliding grooves, the side surfaces close to the two sliding grooves respectively extend out the side surfaces close to the two U-shaped brackets, the interior of the displacement plate is set to be hollow, the inner wall of the displacement plate is slidably connected to two locking plates, the side surfaces close to the two locking plates are respectively provided with arc grooves, the arc grooves are adapted to the sliding rods, and a locking assembly is provided on the displacement plate.

[0007] Preferably, the locking assembly includes a bidirectional threaded rod, which is rotatably connected to the bottom wall of the displacement plate, and the two locking plates are respectively threadedly mounted on two opposite threads of the bidirectional threaded rod, and the upper end of the bidirectional threaded rod is rotated to pass through the upper surface of the displacement plate, and the upper end of the bidirectional threaded rod is fixedly connected to the first knob.

[0008] Preferably, two limit rods are fixedly connected between the upper and lower inner walls of the displacement plate, and the locking plate is slidably sleeved on the outer surfaces of the two limit rods.

[0009] Preferably, a spring cavity is provided inside the cylinder, and a reset plate is sleeved on the outer surface of the sliding rod located inside the spring cavity.

[0010] Preferably, a spring is fixedly connected to the inner wall of the spring cavity, and the other end of the spring is fixedly connected to the reset plate.

[0011] Preferably, one side surface of the two sliding rods that are adjacent to each other is fixedly connected with a rubber pad, and one side surface of the two rubber pads that are adjacent to each other is fixedly connected with an anti-slip protrusion.

[0012] Preferably, two connecting grooves are provided on the lower surface of the base, a second sliding groove is provided on the upper surface of the base, the inner wall of the second sliding groove is rotatably connected to a second bidirectional threaded rod, and the front end of the second bidirectional threaded rod rotates through the front side surface of the base.

[0013] Preferably, the front end of the second bidirectional threaded rod is fixedly connected with a second knob, the lower surfaces of the two displacement plates are fixedly connected with sliding blocks, and the two sliding blocks are respectively threadedly sleeved on two opposite threads of the second bidirectional threaded rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The positioning fixture for grinding the integral PCBN tool will be tightly attached to the PCBN tool and cannot move after the sliding rod moves and contacts the PCBN tool. At this time, the displacement plate is continued to be moved until all the sliding rods are in contact with the PCBN tool. Then, the two locking plates are driven to move by the locking assembly. The sliding rods are locked by the locking plates to prevent them from moving. At the same time, the arc groove can be used to increase the contact area between the locking plate and the sliding rod to improve the locking effect, so that there is no need to make separate adjustments when replacing PCBN tools of different specifications. Through the above structure, there is no need to make separate adjustments according to the size of the tool when replacing PCBN tools of different specifications. It is only necessary to confirm that all the sliding rods are in contact with the PCBN tool, thereby increasing the convenience and efficiency of positioning the PCBN tool.

[0016] (2) In the positioning fixture for grinding the integral PCBN tool, when the sliding rod contacts the PCBN tool and stops moving, the displacement plate continues to move, causing the sliding rod and the cylinder to move relative to each other, and then the reset plate is used to compress the spring, and the elastic force of the spring is used to improve the clamping effect of the sliding rod. At the same time, the two limit rods can avoid deviation when the locking plate moves, and the rubber pad and the anti-skid protrusion are set to avoid damage to the PCBN tool during clamping of the sliding rod. Through the above structure, not only can the reverse movement of the sliding rod be limited by the cooperation of the cylinder and the spring, but the rubber pad and the anti-skid protrusion can also be used to avoid damage to the PCBN tool by the sliding rod during clamping, and the stability after clamping is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the structure of a positioning fixture for grinding an integral PCBN tool according to the utility model;

[0019] Figure 2 This is a schematic diagram of a bidirectional threaded rod of the utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the spring chamber of the utility model;

[0021] Figure 4 This is a schematic diagram of the locking plate of the utility model;

[0022] Figure 5 This is a schematic diagram of the interior of the displacement plate of the utility model;

[0023] Figure 6 It is a schematic diagram of the second sliding groove of the utility model.

[0024] Figure numerals: 1. base; 2. U-shaped bracket; 3. displacement plate; 4. cylinder; 5. sliding rod; 6. sliding groove; 7. locking plate; 8. arc groove; 9. bidirectional threaded rod; 10. first knob; 11. limit rod; 12. spring chamber; 13. reset plate; 14. spring; 15. rubber pad; 16. anti-slip protrusion; 17. connecting groove; 18. second sliding groove; 19. second bidirectional threaded rod; 20. second knob; 21. sliding block. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] See also Figure 1-6 The utility model provides a technical solution: a positioning fixture for grinding an integral PCBN tool, comprising a base 1, wherein the upper surface of the base 1 is fixedly connected with two U-shaped brackets 2, and one side surface of the two vertical plates of the U-shaped bracket 2 is slidably connected with a displacement plate 3, and one side surface of the two displacement plates 3 is fixedly connected with a cylinder 4, and one side surface of the two cylinders 4 is respectively provided with a sliding rod 5, and one side surface opposite to the two sliding rods 5 slides through the opposite side surfaces of the two displacement plates 3, and the upper surfaces of the two U-shaped brackets 2 are respectively provided with sliding grooves 6, and one side surface close to the two sliding grooves 6 extends out of one side surface close to the two U-shaped brackets 2, and the interior of the displacement plate 3 is set to be hollow, and the inner wall of the displacement plate 3 is slidably connected with two locking plates 7, and one side surface close to the two locking plates 7 is respectively provided with an arc groove 8, and the arc groove 8 is adapted to the sliding rod 5, and a locking component is provided on the displacement plate 3. When clamping the PCBN tool, by manipulating the two positioning plates, The displacement plate 3 moves in the opposite direction, thereby synchronously driving the cylinder 4 and the sliding rod 5 to move, and the sliding rod 5 contacts the PCBN tool after moving. Since the sliding rod 5 itself can slide in the horizontal direction, after the sliding rod 5 contacts the PCBN tool after movement, it will be tightly attached to the PCBN tool and cannot move itself. At this time, the displacement plate 3 continues to be moved until all the sliding rods 5 contact the PCBN tool, and then the locking assembly is used to drive the two locking plates 7 to move, and the locking plate 7 is used to lock the sliding rod 5 to prevent it from moving. At the same time, the arc groove 8 can be used to increase the contact area between the locking plate 7 and the sliding rod 5, thereby improving the locking effect, so that there is no need to make separate adjustments when replacing PCBN tools of different specifications. Through the above structure, when replacing PCBN tools of different specifications, there is no need to make separate adjustments according to the size of the tool. It is only necessary to confirm that all the sliding rods 5 are in contact with the PCBN tool, thereby increasing the convenience and efficiency of positioning the PCBN tool.

[0027] Furthermore, the locking assembly includes a bidirectional threaded rod 9, which is rotatably connected to the bottom wall of the displacement plate 3, and the two locking plates 7 are respectively threadedly sleeved on the two opposite threads of the bidirectional threaded rod 9. The upper end of the bidirectional threaded rod 9 rotates to penetrate the upper surface of the displacement plate 3, and the upper end of the bidirectional threaded rod 9 is fixedly connected to a first knob 10. Two limit rods 11 are fixedly connected between the upper and lower inner walls of the displacement plate 3. The locking plate 7 is slidably sleeved on the outer surfaces of the two limit rods 11. A spring cavity 12 is opened inside the cylinder 4, and a reset plate 13 is sleeved on the outer surface of the sliding rod 5 located inside the spring cavity 12. The spring cavity 12 The inner wall of the base 1 is fixedly connected with a spring 14, and the other end of the spring 14 is fixedly connected with the reset plate 13. The adjacent side surfaces of the two sliding rods 5 are respectively fixedly connected with rubber pads 15, and the adjacent side surfaces of the two rubber pads 15 are respectively fixedly connected with anti-slip protrusions 16. The lower surface of the base 1 is provided with two connecting grooves 17, and the upper surface of the base 1 is provided with a second sliding groove 18. The inner wall of the second sliding groove 18 is rotatably connected with a second bidirectional threaded rod 19. The front end of the second bidirectional threaded rod 19 rotates through the front side surface of the base 1, and the front end of the second bidirectional threaded rod 19 is fixedly connected with a second knob 20. The two displacement plates 3 The lower surface of each of the two bidirectional threaded rods 19 is fixedly connected with a sliding block 21. The two sliding blocks 21 are respectively threadedly sleeved on the two opposite threads of the second bidirectional threaded rod 19. When the displacement plate 3 is driven to move, the second bidirectional threaded rod 19 can be driven to rotate by the second knob 20. Since the movement trajectories of the two displacement plates 3 are restricted by the two sliding blocks 21 cooperating with the second sliding groove 18, when the second bidirectional threaded rod 19 rotates, the two sliding blocks 21 are synchronously used to drive the two displacement plates 3 to move in opposite directions. At the same time, when the sliding rod 5 contacts the PCBN tool and stops moving, the displacement plate 3 continues to move, causing the sliding rod 5 to The cylinder 4 generates relative movement, and then the reset plate 13 is used to compress the spring 14, and the elastic force of the spring 14 is used to improve the clamping effect of the sliding rod 5. At the same time, the two limit rods 11 can avoid deviation when the locking plate 7 moves, and the rubber pad 15 and the anti-slip protrusion 16 are arranged to avoid damage to the PCBN tool during clamping of the sliding rod 5. Through the above structure, not only can the reverse movement of the sliding rod 5 be limited by the cooperation of the cylinder 4 and the spring 14, but the rubber pad 15 and the anti-slip protrusion 16 can also be used to avoid damage to the PCBN tool during clamping by the sliding rod 5, and the stability after clamping is increased.

[0028] Working principle: When clamping the PCBN tool, the two displacement plates 3 are manipulated to move in opposite directions, thereby synchronously driving the cylinder 4 and the sliding rod 5 to move, and the sliding rod 5 contacts the PCBN tool after moving. Since the sliding rod 5 itself can slide in the horizontal direction, after the sliding rod 5 contacts the PCBN tool after movement, it will be tightly attached to the PCBN tool and cannot move itself. At this time, the displacement plate 3 is continued to be moved until all the sliding rods 5 are in contact with the PCBN tool, and then the locking assembly is used to drive the two locking plates 7 to move, and the locking plate 7 is used to lock the sliding rod 5 to prevent it from moving. At the same time, the arc groove 8 can be used to increase the contact area between the locking plate 7 and the sliding rod 5, thereby improving the locking effect, so that when replacing PCBN tools of different specifications, there is no need to adjust separately, and when driving When the movable displacement plate 3 moves, the second two-way threaded rod 19 can be driven to rotate by the second knob 20. Since the movement trajectories of the two displacement plates 3 are restricted by the two sliding blocks 21 cooperating with the second sliding groove 18, the two sliding blocks 21 will be used synchronously to drive the two displacement plates 3 to move in opposite directions when the second two-way threaded rod 19 rotates. At the same time, when the sliding rod 5 contacts and stops moving with the PCBN tool, the displacement plate 3 continues to move, causing the sliding rod 5 and the cylinder 4 to produce relative movement, and then the reset plate 13 is used to compress the spring 14, and the elastic force of the spring 14 is used to enhance the clamping effect of the sliding rod 5. At the same time, the two limit rods 11 can avoid deviation when the locking plate 7 moves, and the rubber pad 15 and the anti-slip protrusion 16 are set to avoid damage to the PCBN tool when the sliding rod 5 is clamped.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A positioning fixture for integral PCBN tool grinding, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to two U-shaped brackets (2); a displacement plate (3) is slidably connected to a side surface of two vertical plates of the U-shaped bracket (2); a cylinder (4) is fixedly connected to a side surface of the two displacement plates (3); a sliding rod (5) is provided on a side surface of the two cylinders (4); a side surface opposite to the two sliding rods (5) slides through the side surfaces opposite to the two displacement plates (3); a sliding groove (6) is provided on the upper surfaces of the two U-shaped brackets (2); a side surface adjacent to the two sliding grooves (6) extends out of a side surface adjacent to the two U-shaped brackets (2); the interior of the displacement plate (3) is hollow; two locking plates (7) are slidably connected to the inner wall of the displacement plate (3); an arc groove (8) is provided on a side surface adjacent to the two locking plates (7); the arc groove (8) matches the sliding rod (5); and a locking assembly is provided on the displacement plate (3).

2. The positioning fixture for grinding an integral PCBN tool according to claim 1, characterized in that: The locking assembly comprises a bidirectional threaded rod (9), the bidirectional threaded rod (9) being rotatably connected to the bottom wall of the displacement plate (3), the two locking plates (7) being respectively threadedly sleeved on two opposite threads of the bidirectional threaded rod (9), the upper end of the bidirectional threaded rod (9) being rotatably penetrated through the upper surface of the displacement plate (3), and the upper end of the bidirectional threaded rod (9) being fixedly connected to a first knob (10).

3. The positioning fixture for grinding an integral PCBN tool according to claim 1, characterized in that: Two limit rods (11) are fixedly connected between the upper and lower inner walls of the displacement plate (3), and the locking plate (7) is slidably sleeved on the outer surfaces of the two limit rods (11).

4. The positioning fixture for grinding an integral PCBN tool according to claim 1, characterized in that: A spring cavity (12) is provided inside the cylinder (4), and a reset plate (13) is sleeved on the outer surface of the sliding rod (5) located inside the spring cavity (12).

5. The positioning fixture for grinding an integral PCBN tool according to claim 4, characterized in that: A spring (14) is fixedly connected to the inner wall of the spring cavity (12), and the other end of the spring (14) is fixedly connected to the reset plate (13).

6. The positioning fixture for grinding an integral PCBN tool according to claim 1, characterized in that: The adjacent side surfaces of the two sliding rods (5) are respectively fixedly connected with rubber pads (15), and the adjacent side surfaces of the two rubber pads (15) are respectively fixedly connected with anti-slip protrusions (16).

7. The positioning fixture for grinding an integral PCBN tool according to claim 1, characterized in that: The lower surface of the base (1) is provided with two connection grooves (17), the upper surface of the base (1) is provided with a second sliding groove (18), the inner wall of the second sliding groove (18) is rotatably connected to a second bidirectional threaded rod (19), and the front end of the second bidirectional threaded rod (19) is rotatably extended through the front side surface of the base (1).

8. The positioning fixture for grinding an integral PCBN tool according to claim 7, characterized in that: The front end of the second bidirectional threaded rod (19) is fixedly connected to a second knob (20), and the lower surfaces of the two displacement plates (3) are fixedly connected to sliding blocks (21), and the two sliding blocks (21) are respectively threadedly sleeved on two opposite threads of the second bidirectional threaded rod (19).

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