Self-carried cutter bar for internal and external grinding equipment

Abstract

The utility model discloses a built-in cutter bar for internal and external grinding equipment, and belongs to the field of grinding machining.The built-in cutter bar comprises a bar body, one end of the bar body is connected with the grinding machine equipment, a connecting hole is formed in the end, away from the grinding machine equipment, of the bar body, a connecting pipe is connected to the connecting hole in a threaded mode, and a contraction piece is detachably connected to the interior of the connecting pipe; the contraction piece is inserted into the connecting hole, and the inner wall of the connecting hole abuts against the contraction piece; the shrinkage piece comprises a plurality of holding blocks, the diameters of the holding blocks gradually change in the length direction of the holding blocks, a round hole is defined by the multiple holding blocks, the cutter is inserted into the round hole, and the shrinkage piece fixes the cutter. The device has the effect that cutters of different specifications can be replaced conveniently.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of grinding processing, and in particular to a self-provided tool rod for an inner-outer circle grinding device. BACKGROUND

[0002] The inner-outer circle grinding device is widely used in the field of precision machining, especially for workpieces requiring high precision and surface quality. Such a device can effectively complete the grinding work of inner-outer cylindrical surfaces, end faces and various complex curved surfaces, thereby meeting the production needs of different industries.

[0003] With the development of manufacturing industry, the requirements for the inner-outer circle grinding device are becoming higher and higher, not only higher machining precision and efficiency, but also longer tool life and better stability. In the existing inner-outer circle grinding device, in order to realize efficient and stable machining, various ways are usually adopted to fix and adjust the tool.

[0004] Common methods include directly fixing the blade with screws or fixedly connecting the tool to a fixed part connected to the device. In long-time continuous operation, the tool will be worn out and need to be replaced regularly. In addition, when processing different specifications of products, different specifications of tools need to be replaced, at which time the fixed part needs to be replaced synchronously, which is not only cumbersome but also high in cost, affecting the replacement efficiency. CONTENT OF THE INVENTION

[0005] In order to facilitate the replacement of different specifications of tools, the application provides a self-provided tool rod for an inner-outer circle grinding device.

[0006] The self-provided tool rod for an inner-outer circle grinding device provided by the application adopts the following technical scheme:

[0007] A self-provided tool rod for an inner-outer circle grinding device includes a rod body, one end of the rod body is connected to a grinding machine device, the other end of the rod body away from the grinding machine device is provided with a connecting hole, a connecting pipe is threadedly connected to the connecting hole, a contraction part is connected in the connecting pipe, the contraction part is inserted into the connecting hole, and the inner wall of the connecting hole abuts against the contraction part; the contraction part includes a plurality of clamping blocks, the diameter of the clamping block gradually changes along the length direction, a plurality of clamping blocks surround a circular hole, the tool is inserted into the circular hole, and the contraction part fixes the tool.

[0008] By adopting the technical scheme, when the worker needs to replace the cutter with different diameters, the worker twists the connecting pipe, dismounts the connecting pipe from the rod body, replaces the shrinkable member with a corresponding size, then inserts the cutter into the round hole, inserts the shrinkable member into the connecting hole, and sets the connecting pipe on the rod body, twists the connecting pipe to drive the connecting pipe to move to one end of the rod body, so that the inner wall of the connecting hole moves in the direction of increasing the diameter of the clamping block, and the clamping block can clamp and fix the cutter, and the replacement of the cutter with different specifications is completed, which is simple in operation and reduces the cost.

[0009] Preferably, a rubber buffer layer is arranged on the surface of the shrinkable member, a plurality of convex points are arranged on the rubber buffer layer, and the rubber buffer layer abuts against the cutter rod.

[0010] By adopting the technical scheme, the rubber buffer layer can be more closely fitted when the shrinkable member is clamped, and is more stable.

[0011] Preferably, one end of the rod body is fixedly connected with a connecting block, one end of the connecting block is provided with a placing hole, and a connecting mechanism for connecting different specified cutters is arranged in the placing hole.

[0012] By adopting the technical scheme, when the worker needs to replace the cutter, the worker separates the old cutter from the connecting rod by releasing the connecting mechanism, inserts the cutter on the new cutter into the placing hole, and then fixes and connects the new cutter through the connecting mechanism, so that the cutter with different specifications can be replaced, the replacement efficiency is improved, and the economic cost is reduced.

[0013] Preferably, the connecting mechanism comprises a plurality of abutting blocks, the plurality of abutting blocks slide in the placing hole, the plurality of abutting blocks abut against the side walls of the cutter in different directions respectively, a driving rod is fixedly connected to the abutting block, a plurality of through holes are arranged in the inner wall of the placing hole, the driving rod penetrates and slides in the through hole, a limiting groove is arranged in the side wall of the driving rod, a limiting block is fixedly connected to the inner wall of the through hole, and the limiting block is slidingly connected to the inner wall of the limiting groove; a driving groove is arranged in the connecting block, a sleeve is threadedly connected to the driving rod, the sleeve is rotationally connected to the inner wall of the driving groove, and the connecting mechanism further comprises a driving assembly for driving the sleeve to rotate.

[0014] By adopting the technical scheme, when the worker needs to replace the cutter, the worker drives a plurality of sleeves to rotate through the driving assembly, the sleeve rotation drives the driving rod to move, the driving rod moves to drive the abutting block to move to the center of the placing hole, so that the abutting block can abut against the cutter to fix the cutter.

[0015] Preferably, the driving assembly comprises a plurality of first gears, a driving gear and a rotating cylinder, the plurality of first gears are fixedly sleeved on the outer sidewalls of the sleeves respectively, the driving gear rotates in the driving groove and is engaged with the plurality of first gears, the rotating cylinder is fixedly connected with the driving gear, the rotating cylinder penetrates the connecting block and is rotationally connected with the outer sidewall of the rod body, and the driving groove is provided with a limiting assembly for limiting rotation of the driving gear.

[0016] By using the above technical scheme, when the staff needs to adjust the position of the abutting block, the staff drives the rotating cylinder to rotate, the rotating cylinder drives the driving gear to rotate, the driving gear drives the first gear to rotate, and the first gear drives the sleeve to rotate, thereby driving the abutting block to move.

[0017] Preferably, the limiting assembly comprises a ratchet wheel and a pawl, the ratchet wheel is fixedly sleeved on the sidewall of the driving gear, the pawl is installed on the inner wall of the driving groove, the pawl is engaged with the ratchet wheel, the inner wall of the driving groove is penetrated and slidably provided with a baffle, the baffle is fixedly connected with the pawl, and the connecting block is provided with a moving assembly for moving the baffle.

[0018] By using the above technical scheme, when the staff drives the rotating cylinder to move, the ratchet wheel rotates together with the driving gear, and the pawl avoids the ratchet wheel and the driving gear from being reversed, thereby avoiding the abutting block from being relaxed, when the staff needs to replace the tool, the staff drives the baffle to move away from the pawl direction through the moving assembly, the baffle drives the pawl to move, thereby making the pawl away from the ratchet wheel, at this time, the staff can drive the rotating cylinder to reverse the ratchet wheel, so that the abutting block is away from the tool.

[0019] Preferably, the moving assembly comprises a pull rod and a spring, the pull rod is fixedly connected with the baffle, one end of the pull rod away from the baffle is fixedly connected with a pull block, and the spring is sleeved on the pull rod and both ends thereof are fixedly connected with the pull block and the sidewall of the connecting block respectively.

[0020] By using the above technical scheme, the pull block drives the pull rod to move to the driving groove direction in the elastic pulling state of the spring, thereby making the baffle protrude from the inner wall of the driving groove and abut against the pawl, when the staff needs to rotate the rotating cylinder to release the abutting block, the staff pulls the pull block to drive the spring to stretch and move, so that the baffle is away from the pawl.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. When the worker needs to replace the cutter of different diameters, the worker twists the connecting pipe, dismounts the connecting pipe from the rod body, and replaces the shrinker of the corresponding size, then inserts the cutter into the round hole, and inserts the shrinker into the connecting hole, the connecting pipe is sleeved on the rod body, and is screwed into the connecting pipe, the connecting pipe is twisted to drive the connecting pipe to move to one end of the rod body, so that the inner wall of the connecting hole moves in the direction of increasing the diameter of the clamping block, and then the clamping block can clampingly fix the cutter; then the replacement of cutters of different specifications is completed, the operation is simple, and the cost is reduced;

[0023] 2. The rubber buffer layer can be more fitted when the shrinker is clamped, and is more stable;

[0024] 3. When the worker needs to replace the cutter, the worker releases the connecting mechanism to separate the old cutter from the connecting rod, so that the cutter on the new cutter is inserted into the placement hole, and then the new cutter is fixed and connected through the connecting mechanism, so that different specifications of cutters are replaced, the replacement efficiency is improved, and the economic cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of the overall structure in embodiment 1 of the present application.

[0026] Figure 2 is a schematic view of the structure of the protruding shrinker in embodiment 1 of the present application.

[0027] Figure 3 is a schematic view of the overall structure in embodiment 2 of the present application.

[0028] Figure 4 is an end view of the connecting block in embodiment 2 of the present application.

[0029] Figure 5 is a sectional view of the connecting block in embodiment 2 of the present application.

[0030] Figure 6 is Figure 5 is an enlarged view of A in FIG. 8.

[0031] Figure 7 is a schematic view of the structure of the protruding pawl in embodiment 2 of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1. Rod body; 2. Cutting tool; 3. Torsion spring; 4. Connecting tube; 5. Retractable component; 6. Clamping block; 7. Round hole; 8. Rubber buffer layer; 9. Connecting block; 10. Placement hole; 11. Connecting mechanism; 12. Abutment block; 13. Drive rod; 14. Through hole; 15. Limiting groove; 16. Limiting block; 17. Drive groove; 18. Sleeve; 19. Drive assembly; 20. First gear; 21. Drive gear; 22. Rotating cylinder; 23. Limiting assembly; 24. Ratchet; 25. Pawl; 26. Baffle; 27. Moving assembly; 28. Pull rod; 29. ​​Spring; 30. Torsion spring. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown in Embodiment 1 of this application, a self-contained tool holder for an internal and external cylindrical grinding machine is disclosed, comprising a rod body 1, which is cylindrical in shape. One end of the rod body 1 is connected to a grinding machine. A connecting hole is provided at the end of the rod body 1 away from the grinding machine. A thread is provided on the outer wall of the end of the rod body 1 away from the machine. A connecting pipe 4 is threadedly connected to the connecting hole. A shrinking member 5 is connected inside the connecting pipe 4 and is inserted into the connecting hole. The shrinking member 5 includes multiple clamping blocks 6. The end face of the clamping block 6 is arc-shaped. The diameter of the clamping block 6 gradually increases along its length from the end of the connecting hole to the inner end of the connecting pipe 4. The multiple clamping blocks 6 form a circular hole 7, into which a tool 2 is inserted. A rubber buffer layer 8 is provided on the surface of the shrinking member 5. The rubber buffer layer 8 is provided with multiple protrusions and abuts against the surface of the tool 2.

[0037] The implementation principle of Embodiment 1 of this application is as follows: When the operator needs to replace the tool 2 with a different diameter, the operator unscrews the connecting pipe 4 to remove it from the rod body 1, and replaces the connecting pipe 4 with a corresponding size shrink-fit 5. Then, the tool 2 is first inserted into the round hole 7, and then the shrink-fit 5 is inserted into the connecting hole. When the connecting pipe 4 is screwed onto the rod body 1, the inner wall of the connecting hole moves relative to the direction of increasing diameter of the clamping block 6, thereby enabling the clamping block 6 to clamp and fix the tool 2. The rubber buffer layer 8 can fit more closely and be more stable when the shrink-fit 5 clamps. Thus, the replacement of tools 2 of different specifications is completed. The operation is simple and the cost is reduced.

[0038] Example 2

[0039] like Figure 3 and Figure 4As shown in the drawings, the difference between the second embodiment and the first embodiment is that the rod body 1 is fixedly welded with a connecting block 9 at the end away from the grinding machine, the connecting block 9 is in the shape of a cylinder, and the axis is in the same line with the axis of the rod body 1, a placing hole 10 is formed in the connecting block 9 away from the rod body 1 in the horizontal direction, the cutter 2 is inserted into the placing hole 10, and a connecting mechanism 11 for connecting different specified cutters 2 is arranged in the placing hole 10.

[0040] As shown in the drawings, Figure 5 and Figure 6 The connecting mechanism 11 includes a plurality of abutting blocks 12, which are uniformly distributed in the placing hole 10 and slide in the radial direction in the placing hole 10, four abutting blocks 12 are selected in the embodiment and are distributed at four positions of the placing hole 10, and the plurality of abutting blocks 12 abut the side walls of the cutter 2 in different directions, respectively. The abutting block 12 is in the shape of an arc block, which can better fit the side wall of the cutter handle 2; a driving rod 13 is fixedly welded on the arc block, the driving rod 13 is in the shape of a cylinder and its axis is arranged in the horizontal direction, four through holes 14 are formed in the inner wall of the placing hole 10, the driving rod 13 is threaded and slides in the through hole 14, a limiting groove 15 is formed in the side wall of the driving rod 13 along the length direction, and a limiting block 16 is fixedly welded on the inner wall of the through hole 14 and is slidingly connected to the inner wall of the limiting groove 15.

[0041] As shown in the drawings, Figure 5 A driving groove 17 is formed in the connecting block 9, the driving groove 17 is in the shape of a ring, a sleeve 18 is threadedly connected to the driving rod 13, one end surface of the sleeve 18 is rotationally connected to the inner wall of the driving groove 17, and the connecting mechanism 11 further includes a driving assembly 19 for rotating the sleeve 18. The driving assembly 19 includes four first gears 20, one driving gear 21 and one rotating cylinder 22, the four first gears 20 are fixedly sleeved on the outer side wall of the four sleeves 18, the driving gear 21 is rotatable in the driving groove 17 and is engaged with the four first gears 20, the left end surface of the rotating cylinder 22 is fixedly welded to the end surface of the driving gear 21 away from the first gears 20, the other end of the rotating cylinder 22 penetrates out of the connecting block 9 and is rotationally connected to the outer side wall of the rod body 1, and the driving groove 17 is provided with a limiting assembly 23 for limiting the rotation of the driving gear 21.

[0042] As shown in the drawings, Figure 5 and Figure 6As shown, the limiting assembly 23 comprises a ratchet wheel 24 and a pawl 25, the ratchet wheel 24 is fixedly sleeved on the side wall of the driving gear 21, a fixed rod is fixedly welded on the inner wall of the driving groove 17, the pawl 25 is rotationally connected to the fixed rod, a torsion spring 3 is arranged on the fixed rod, two ends of the torsion spring 3 are fixedly welded on the fixed rod and the pawl 25 respectively, and the pawl 25 is engaged with the ratchet wheel 24. A baffle 26 is sleeved and slid in the inner wall of the driving groove 17, the baffle 26 is fixedly welded above the pawl 25, and the connecting block 9 is provided with a moving assembly 27 for driving the baffle 26 to move. The moving assembly comprises a pull rod 28 and a spring 29, one end of the pull rod 28 is sleeved in the connecting side wall and fixedly welded in the baffle 26, the other end of the pull rod 28 is fixedly welded with a pull block, and the spring 29 is sleeved on the pull rod 28 and has two ends fixedly welded on the pull block and the side wall of the connecting block 9.

[0043] The implementation principle of the embodiment 2 of the present application is as follows: when the worker needs to replace the tool 2 of different specifications, the worker first pulls the pull block to move outward, the pull block moves to drive the pull rod 28 to stretch the spring 29, the pull rod 28 moves to drive the pawl 25 to move away from the ratchet wheel 24 through the baffle 26, so as to release the engagement with the ratchet wheel 24; at this time, the worker can rotate the rotating cylinder 22, the rotating cylinder 22 rotates to drive the driving gear 21 to rotate, the driving gear 21 rotates to drive the sleeve pipe 18 to rotate through the first gear 20, under the action of the limiting block 16, the sleeve pipe 18 rotates to drive the driving rod 13 to move along a straight line, so as to make the abutting block 12 move away from the tool 2 and release the fixation of the tool 2, so as to take out the tool 2 and replace the tool 2; after the worker inserts the newly replaced tool 2 into the placement hole 10, the worker drives the abutting block 12 to move towards the tool 2 and abut against the tool 2 by rotating the rotating cylinder 22, at this time, under the one-way rotation limitation of the ratchet wheel 24 and the pawl 25, the driving gear 21 is prevented from being reversed, and the position of the abutting block 12 is fixed and not easy to deviate and loosen, which facilitates the replacement of tools 2 of different specifications, improves the replacement efficiency and reduces the economic cost.

[0044] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A self-contained tool arbor for internal and external cylindrical grinding apparatus, characterized by: The utility model provides a kind of grinding machine tool holder, including the rod body (1), one end of the rod body (1) is connected for grinding machine equipment, the end of the rod body (1) away from grinding machine equipment is provided with connecting hole, connecting pipe (4) is threadedly connected in the connecting hole, retracting piece (5) is connected in the connecting pipe (4), and the retracting piece (5) is inserted into the connecting hole;The retracting piece (5) includes a plurality of embracing blocks (6), the diameter of the embracing block (6) gradually changes along its length direction, a plurality of the embracing blocks (6) surround circular hole (7), tool (2) is inserted into the circular hole (7), and the retracting piece (5) fixes tool (2).

2. A self-contained arbor for internal and external cylindrical grinding apparatus as defined in claim 1, wherein: The surface of the retracting piece (5) is provided with a rubber buffer layer (8), the rubber buffer layer (8) is provided with a plurality of convex points, and the rubber buffer layer (8) abuts against the tool bar.

3. The self-contained arbor for internal and external cylindrical grinding apparatus of claim 1, wherein: One end of the rod body (1) is fixedly connected with a connecting block (9), one end of the connecting block (9) is provided with a placing hole (10), and a connecting mechanism (11) for connecting different specified tools (2) is arranged in the placing hole (10).

4. A self-contained arbor for internal and external cylindrical grinding apparatus as defined in claim 3 wherein: The connecting mechanism (11) includes a plurality of abutting blocks (12), the abutting blocks (12) slide in the radial direction in the placing hole (10), and the abutting blocks (12) abut against the side walls of the tools (2) in different directions, respectively. The abutting blocks (12) are fixedly connected with driving rods (13), a plurality of through holes (14) are formed in the inner wall of the placing hole (10), the driving rods (13) pass through and slide in the through holes (14), the side walls of the driving rods (13) are provided with limiting grooves (15), the inner walls of the through holes (14) are fixedly connected with limiting blocks (16), and the limiting blocks (16) are slidingly connected with the inner walls of the limiting grooves (15). A driving groove (17) is formed in the connecting block (9), a sleeve (18) is threadedly connected to the driving rod (13), the sleeve (18) is rotatably connected to the inner wall of the driving groove (17), and the connecting mechanism (11) further includes a driving assembly (19) for driving the sleeve (18) to rotate.

5. A self-contained arbor for internal and external cylindrical grinding apparatus as defined in claim 4 wherein: The driving assembly (19) includes a plurality of first gears (20), a driving gear (21), and a rotating cylinder (22), the first gears (20) are fixedly sleeved on the outer side walls of the sleeves (18), the driving gear (21) rotates in the driving groove (17) and engages with the first gears (20), the rotating cylinder (22) is fixedly connected with the driving gear (21), the rotating cylinder (22) passes through the connecting block (9) and is rotatably connected to the outer side wall of the rod body (1), and the driving groove (17) is provided with a limiting assembly (23) for limiting the rotation of the driving gear (21).

6. A self-contained arbor for internal and external cylindrical grinding apparatus as defined in claim 5, wherein: The limiting component (23) includes a ratchet (24) and a pawl (25). The ratchet (24) is fixedly sleeved on the side wall of the drive gear (21). The pawl (25) is installed on the inner wall of the drive groove (17) and engages with the ratchet (24). A baffle (26) is inserted through and slides on the inner wall of the drive groove (17). The baffle (26) is fixedly connected to the pawl (25). A moving component (27) for moving the baffle (26) is provided on the connecting block (9).

7. A self-contained arbor for internal and external cylindrical grinding apparatus according to claim 6, wherein: The moving component includes a pull rod (28) and a spring (29). The pull rod (28) is fixedly connected to the baffle (26). A pull block is fixedly connected to one end of the pull rod (28) away from the baffle (26). The spring (29) is sleeved on the pull rod (28) and its two ends are fixedly connected to the pull block and the side wall of the connecting block (9), respectively.

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