HSK knife handle manual quick locking mechanism for machining main shaft

Abstract

The utility model relates to the technical field of cutter handle installation, in particular to an HSK cutter handle manual quick locking mechanism for a machining spindle, which comprises a cutter handle connecting shaft, a transition shaft, a cutter handle and a locking mechanism, and the transition shaft is arranged inside the cutter handle connecting shaft. The locking mechanism comprises a locking stand column, a positioning block, an adjusting rod and an adjusting block, one end of the locking stand column is connected with the transition shaft and fixedly arranged in the knife handle connecting shaft, the positioning block is arranged on the outer side wall of the locking stand column, and the positioning block limits the knife handle; an adjusting rod is arranged in the locking stand column, the two ends of the adjusting rod are sleeved with adjusting blocks, and the adjusting blocks are in threaded fit with the adjusting rod and are in sliding fit with the locking stand column. When the cutter handle is inserted into the cutter handle connecting shaft, a clamping groove is formed between the interior of the cutter handle and the locking stand column, and the adjusting block is matched with the clamping groove. The adjusting block is controlled by rotating the adjusting rod, when the adjusting block extends outwards to the clamping groove, the cutter handle is fixed, and when the adjusting block retracts inwards to the interior of the locking stand column, the cutter handle is unlocked.

Description

Technical Field

[0001] The utility model relates to the technical field of tool holder installation, in particular to a manual quick locking mechanism for an HSK tool holder used for machining a spindle. Background Art

[0002] In CNC machine tool processing, HSK toolholders are widely used due to their high precision, high rigidity, and excellent repeatability. However, in multi-spindle machine tools, automatic tool change mechanisms are often impractical due to cost and space constraints. This results in manual toolholder changes being the only option on these machines.

[0003] When manually changing the tool holder, the old tool holder needs to be replaced and then locked with the new one. The unlocking and locking mechanism is relatively complicated, which reduces work efficiency and increases operation difficulty and safety hazards. At the same time, it may cause inaccurate positioning between the tool and the machine tool spindle, thereby affecting the processing accuracy.

[0004] In response to the above problems, this design proposes a manual quick and convenient locking mechanism for HSK tool holders for machining spindles, aiming to solve the tedious and inconvenient manual tool changing in multi-spindle compound machine tools, while reducing manufacturing costs and improving the performance of the equipment. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a manual quick locking mechanism for an HSK toolholder for a machining spindle. The manual quick locking mechanism rotates an adjusting rod to cause the adjusting blocks on both sides to extend outward from a locking column and engage with a slot between the interior of the toolholder and the locking column, thereby unlocking the toolholder. To unlock the toolholder, the adjusting rod is rotated in the opposite direction, causing the adjusting blocks on both sides to retract into the interior of the locking column and disengage from the slot, thereby unlocking the toolholder.

[0006] To achieve the above-mentioned purpose, according to the embodiment of the first aspect of the utility model, a manual quick locking mechanism for an HSK tool holder for a machining spindle is proposed, comprising a tool holder connecting shaft, a transition shaft, a tool holder and a locking mechanism, wherein the tool holder connecting shaft is fixedly arranged on the spindle by a screw, and the transition shaft is arranged inside the tool holder connecting shaft; the locking mechanism comprises a locking column, a positioning block, an adjusting rod and an adjusting block, one end of the locking column is threadedly connected to the transition shaft and is fixedly arranged inside the tool holder connecting shaft, and the outer side wall of the locking column is provided with a positioning block. The positioning block limits the knife handle; the adjusting rod is provided inside the locking column, and the adjusting blocks are sleeved on both ends of the adjusting rod, and the adjusting block is threadedly engaged with the adjusting rod and slidingly engaged with the locking column; when the knife handle is inserted into the knife handle connecting shaft, a slot is formed between the inside of the knife handle and the locking column, and the adjusting block is adapted to the slot; when the adjusting block extends outward to the slot, the knife handle is fixed, and when the adjusting block retracts inward to the inside of the locking column, the knife handle is unlocked.

[0007] As a further solution of the present invention: a rivet push column is provided inside the locking column, and the rivet push column abuts against the inside of the knife handle, and a conical surface is provided on the side of the adjustment block facing the rivet push column, and a slope is provided on the side wall of the slot, and the conical surface slides with the slope; when the adjustment block retracts inwardly to the inside of the locking column, the rivet push column moves outside the locking column, and the knife handle is unlocked.

[0008] As a further solution of the present invention: a hollow shaft is provided inside the locking column, and the hollow shaft is communicated with the transition shaft for injecting coolant.

[0009] As a further solution of the present invention: a sealing ring is provided on the rivet top column.

[0010] As a further solution of the present invention: a transition hole is provided on the outer peripheral wall of the tool handle connecting shaft, the transition hole is connected to the adjustment rod in the locking column, and a dustproof ring is provided on the outer peripheral wall of the tool handle connecting shaft, the dustproof ring protects the transition hole from dust.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model rotates the adjusting rod so that the adjusting blocks on both sides extend outward from the locking column and engage with the card slot between the inside of the knife handle and the locking column to complete the unlocking of the knife handle. When the knife handle needs to be unlocked, the adjusting rod is rotated in the opposite direction so that the adjusting blocks on both sides are retracted into the inside of the locking column and disengaged from the card slot to unlock the knife handle.

[0013] 2. This utility model utilizes a pull pin to provide additional abutment against the inside of the tool handle, thereby enhancing locking stability. This ensures that the tool handle remains stable even during high-speed cutting or under high torque, preventing it from falling due to vibration or impact. Furthermore, the coordinated design of the conical and inclined surfaces creates an inward squeezing force when the adjustment block extends outward and engages the slot, further enhancing the locking effect. Furthermore, during the unlocking process of the adjustment block, the sliding fit between the conical and inclined surfaces gradually weakens, and the pull pin push post is affected by the contraction of the adjustment block, moving toward the outside of the locking post. This facilitates rapid release of the tool handle, completing unlocking.

[0014] 3. The utility model provides a hollow shaft to facilitate the injection of coolant, improve the lubrication of the internal structure of the locking column, and extend the service life of the equipment. At the same time, the sealing ring on the top of the rivet prevents the coolant from entering the inside of the tool handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the interior of a manual quick locking mechanism for an HSK tool holder used in machining spindles.

[0016] Figure 2 This is an exploded diagram of a manual quick locking mechanism for an HSK tool holder used in a machining spindle.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the locking column.

[0018] Figure 4 This is a cross-sectional view of the locking column.

[0019] The reference numerals in the figure are: 1. tool handle connecting shaft; 11. transition hole; 2. transition shaft; 3. tool handle; 31. slot; 32. inclined surface; 4. locking column; 41. positioning block; 42. adjusting rod; 43. adjusting block; 431. conical surface; 5. rivet top column; 51. sealing ring; 6. hollow shaft; 7. dustproof collar. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 4 As shown, a manual quick locking mechanism for an HSK tool holder for a machining spindle includes a tool holder connecting shaft 1, a transition shaft 2, a tool holder 3, and a locking mechanism. The tool holder connecting shaft 1 is fixed to the spindle by screws, and the transition shaft 2 is arranged inside the tool holder connecting shaft 1.

[0022] The locking mechanism includes a locking column 4, a positioning block 41, an adjusting rod 42 and an adjusting block 43. One end of the locking column 4 is threadedly connected to the transition shaft 2 and is fixedly arranged inside the tool handle connecting shaft 1. The outer wall of the locking column 4 is provided with a positioning block 41, and the positioning block 41 limits the tool handle 3; the positioning block 41 can be symmetrically arranged and fixed by bolts to perform preliminary positioning of the tool handle 3 inserted into the tool handle connecting shaft 1 to prevent it from moving at will.

[0023] The locking column 4 is provided with the adjusting rod 42, and the adjusting blocks 43 are sleeved on both ends of the adjusting rod 42. The adjusting blocks 43 are threadedly engaged with the adjusting rod 42 and slidingly engaged with the locking column 4; when the knife handle 3 is inserted into the knife handle connecting shaft 1, a slot 31 is formed between the interior of the knife handle 3 and the locking column 4, and the adjusting block 43 is adapted to the slot 31; when the adjusting block 43 extends outward to the slot 31, the knife handle 3 is fixed, and when the adjusting block 43 retracts inward to the interior of the locking column 4, the knife handle 3 is unlocked.

[0024] By rotating the adjusting rod 42, the adjusting blocks 43 on both sides extend outward from the locking column 4 and engage with the card slot 31 between the inside of the knife handle 3 and the locking column 4, thereby unlocking the knife handle 3. When the knife handle 3 needs to be unlocked, the adjusting rod 42 is rotated in the opposite direction, so that the adjusting blocks 43 on both sides are retracted into the inside of the locking column 4 and disengaged from the card slot 31, thereby unlocking the knife handle 3.

[0025] A rivet push column 5 is provided inside the locking column 4, and the rivet push column 5 abuts against the inside of the knife handle 3. The adjusting block 43 is provided with a conical surface 431 on the side facing the rivet push column 5, and the side wall of the slot 31 is provided with an inclined surface 32, and the conical surface 431 slides with the inclined surface 32; when the adjusting block 43 retracts inwardly to the inside of the locking column 4, the rivet push column 5 moves toward the outside of the locking column 4, and the knife handle 3 is unlocked.

[0026] The pull pin provides additional contact against the interior of the tool handle 3, enhancing locking stability and ensuring that the tool handle 3 remains stable even during high-speed cutting or under high torque, preventing it from falling out due to vibration or impact. Furthermore, the coordination between the tapered surface 431 and the inclined surface 32 creates an inward squeezing force when the adjustment block 43 extends outward and engages the slot 31, further enhancing the locking effect. Furthermore, during the unlocking process of the adjustment block 43, the sliding engagement between the tapered surface 431 and the inclined surface 32 gradually weakens. Simultaneously, the pull pin post 5, affected by the contraction of the adjustment block 43, moves toward the exterior of the locking post 4, prompting the tool handle 3 to quickly disengage and unlock.

[0027] A hollow shaft 6 is provided inside the locking column 4 , and the hollow shaft 6 is connected to the transition shaft 2 for injecting coolant; a sealing ring 51 is provided on the rivet top column 5 .

[0028] By providing the hollow shaft 6 , it is convenient to inject coolant, improve the lubricity of the internal structure of the locking column 4 , and extend the service life of the equipment. At the same time, the sealing ring 51 on the top of the rivet prevents the coolant from entering the inside of the tool handle 3 .

[0029] A transition hole 11 is provided on the outer peripheral wall of the tool handle connecting shaft 1, and the transition hole 11 is connected to the adjustment rod 42 in the locking column 4. A dustproof ring 7 is provided on the outer peripheral wall of the tool handle connecting shaft 1, and the dustproof ring 7 protects the transition hole 11 from dust.

[0030] The dustproof collar 7 is provided to prevent dust from entering the transition hole 11 , thereby keeping the interior of the transition hole 11 clean and facilitating the rotation of the adjustment rod 42 .

[0031] The working principle of the present invention is as follows: by rotating the adjusting rod 42, the adjusting blocks 43 on both sides extend outward from the locking column 4 and engage with the locking slot 31 between the interior of the knife handle 3 and the locking column 4, thereby unlocking the knife handle 3. When the knife handle 3 needs to be unlocked, the adjusting rod 42 is rotated in the opposite direction, causing the adjusting blocks 43 on both sides to retract into the interior of the locking column 4 and disengage from the locking slot 31, thereby unlocking the knife handle 3. At the same time, by providing the cooperation between the conical surface 431 and the inclined surface 32, an inward squeezing force is generated when the adjusting blocks 43 extend outward and engage with the locking slot 31, further enhancing the locking effect. In addition, during the unlocking process of the adjusting blocks 43, the sliding cooperation between the conical surface 431 and the inclined surface 32 gradually weakens. At the same time, the nail pulling post 5 is also affected by the contraction of the adjusting block 43 and moves toward the outside of the locking column 4, prompting the knife handle 3 to quickly disengage and complete the unlocking.

[0032] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A manual quick locking mechanism for an HSK toolholder for a machining spindle, comprising a toolholder connecting shaft (1), a transition shaft (2), a toolholder (3) and a locking mechanism, wherein the toolholder connecting shaft (1) is fixed to the spindle by screws, and the transition shaft (2) is arranged inside the toolholder connecting shaft (1); It is characterized by: The locking mechanism comprises a locking column (4), a positioning block (41), an adjusting rod (42) and an adjusting block (43); one end of the locking column (4) is threadedly connected to the transition shaft (2) and is fixedly arranged inside the knife handle connecting shaft (1); a positioning block (41) is provided on the outer wall of the locking column (4); the positioning block (41) limits the knife handle (3); the adjusting rod (42) is provided inside the locking column (4); the adjusting blocks (43) are sleeved on both ends of the adjusting rod (42); the adjusting blocks (43) are threadedly matched with the adjusting rod (42) and are slidably matched with the locking column (4); When the knife handle (3) is inserted into the knife handle connecting shaft (1), a slot (31) is formed between the interior of the knife handle (3) and the locking column (4), and the adjusting block (43) is adapted to the slot (31); when the adjusting block (43) extends outward to the slot (31), the knife handle (3) is fixed, and when the adjusting block (43) retracts inward to the interior of the locking column (4), the knife handle (3) is unlocked.

2. A manual quick locking mechanism for an HSK tool holder for a machining spindle according to claim 1, characterized in that: A rivet top column (5) is provided inside the locking column (4), and the rivet top column (5) abuts against the inside of the knife handle (3); a conical surface (431) is provided on the side of the adjustment block (43) facing the rivet top column (5), and a slope (32) is provided on the side wall of the slot (31); the conical surface (431) and the slope (32) are slidably matched; when the adjustment block (43) is retracted inwardly to the inside of the locking column (4), the rivet top column (5) moves outward of the locking column (4), and the knife handle (3) is unlocked.

3. A manual quick locking mechanism for an HSK tool holder for a machining spindle according to claim 2, characterized in that: A hollow shaft (6) is provided inside the locking column (4), and the hollow shaft (6) is connected to the transition shaft (2) for injecting coolant.

4. A manual quick locking mechanism for an HSK tool holder for a machining spindle according to claim 2, characterized in that: A sealing ring (51) is provided on the rivet top column (5).

5. The manual quick locking mechanism for an HSK tool holder for a machining spindle according to claim 1, characterized in that: A transition hole (11) is provided on the outer peripheral wall of the tool handle connecting shaft (1), and the transition hole (11) is connected to the adjustment rod (42) in the locking column (4). A dustproof ring (7) is provided on the outer peripheral wall of the tool handle connecting shaft (1), and the dustproof ring (7) protects the transition hole (11) from dust.

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