CN217018750U - Key processing machine - Google Patents

Abstract

The utility model provides a key processing machine, which relates to the field of key processing and comprises a workbench, a feed mechanism, a processing mechanism and a rotating mechanism. The workbench is used for clamping the key die and the key blank. The feed mechanism is used for driving the workbench to feed, and the workbench is arranged on the feed mechanism. The machining mechanism includes a copying assembly for simulating the shape of the key and a cutting assembly for cutting the key blank. The rotating mechanism is arranged between the workbench and the feed mechanism and used for driving the workbench to rotate relative to the feed mechanism and enabling the rotating axis of the tooth blank of the key blank to be vertical to the cutting direction. The utility model has simple structure and easy operation. The key processing machine provided by the utility model can process a new key with the end face in a convex arc shape by taking the key with the end face in the convex arc shape as a die. The new key is in the use, compares in the terminal surface that current key processing machine processed and lacks the key of protrusion arc, can reduce the wearing and tearing of terminal surface, improves the life of key.

Description

Key processing machine

Technical Field

The utility model relates to the field of key processing, in particular to a key processing machine.

Background

When a conventional key processing machine is used, a key die and a key blank are respectively mounted on a jig, and then the key processing machine simulates the shape of a key and cuts the blank teeth of the key blank according to the simulation result to obtain a new key having the same shape as the tooth grooves of the key die. There are many types of keys, and in some keys, the end faces of the gullets are convexly curved. However, when the existing key processing machine is used for feeding, the profiling can be carried out only in one direction, the profiling cannot be carried out on the shape of the end face, and the end face can only be processed into a plane or an inwards concave cambered surface according to the shape of a cutter. The existing key processing machine is difficult to perform profiling processing on the shape of the end face, and the end face of a key with a plane or concave end face is easy to wear, so that the key is finally invalid and cannot be unlocked.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a key processing machine, which solves the problem that the end surface of a tooth groove is difficult to process in the background technology.

To achieve the above object, the present invention provides a key processing machine comprising:

the workbench is used for clamping the key die and the key blank.

And the feed mechanism is used for driving the workbench to feed, and the workbench is arranged on the feed mechanism.

The machining mechanism comprises a copying assembly for copying the shape of the key and a cutting assembly for cutting and machining the key blank.

And the rotating mechanism is arranged between the workbench and the feed mechanism and is used for driving the workbench to rotate relative to the feed mechanism and enabling the rotating axis of the tooth blank of the key blank to be vertical to the cutting direction.

The profiling of a key processing machine is generally accomplished by a profiling assembly in intimate contact with the end face of the key die and moving laterally across the end face in the direction of the key shaft. The end face of the key is a convex arc-shaped key, the end face of the key is an arc line on a tangent plane perpendicular to the direction of the key rod, and the convex arc-shaped end face needs to be profiled, so that the profiling component needs to move along the arc line.

The profiling assembly of the key processing machine is mounted on a plane which is parallel to the cutting direction and perpendicular to the key shaft direction. The rotation axis of the tooth blank of the key blank is vertical to the cutting direction, and the tooth groove of the key die is parallel to the tooth blank direction when being installed. Therefore, the rotating axis of the tooth socket is vertical to the plane where the copying component is installed, and the end face of the tooth socket and the copying component can move relatively in the plane where the copying component is installed, so that the effect that the copying component moves along the arc is achieved, and the copying of the end face protruding in the arc shape is completed.

The utility model provides a key processing machine, wherein a copying assembly is contacted with the end surface of a tooth groove during copying to obtain a contact position. At this time, the working table rotates to drive the key mold and the key blank to rotate together. When the key die rotates, the end surfaces of the tooth grooves rotate simultaneously, so that the contact position can move up and down along the end surfaces of the tooth grooves in the plane where the profiling component is installed. Therefore, the effect that the end surface of the tooth socket and the profiling component generate relative movement in the plane where the profiling component is installed is achieved, and the profiling component can profile the arc-shaped end surface. When the copying is carried out, the motion state of the key blank is consistent with that of the key die, so that when the key blank rotates, the cutting assembly processes the end surface of the tooth blank according to the copying result. Thus, the key processing machine provided by the utility model can perform copying processing on the end surface shape of the tooth groove.

The utility model has the beneficial effects that: the key processing machine provided by the utility model has a simple structure and can perform profiling processing on the end surface shape of the tooth socket. The key processing machine provided by the utility model can process a new key with the end face in a convex arc shape by taking the key with the end face in the convex arc shape as a die. The new key is in the use, compares in the terminal surface that current key processing machine processed and lacks the key of protrusion arc, can reduce the wearing and tearing of terminal surface, improves the life of key.

Drawings

FIG. 1 is a schematic view of the connection of a rotating mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view of a key processing machine according to one embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of a needle hub according to one embodiment of the present invention;

FIG. 4 is a schematic diagram of a key mold according to an embodiment of the present invention;

FIG. 5 is a schematic view of a key blank according to an embodiment of the present invention;

fig. 6 is a schematic view of the installation of the key mold in one embodiment of the present invention.

Wherein, 1: a work table; 2: a key mold; 3: a key blank; 4: a feed mechanism; 5: guiding a needle; 6: a handle; 7: a saw blade milling cutter; 8: a needle guide seat; 9: moving the bolt; 10: a limiting sleeve; 11: a limit bolt; 12: a limiting inner cavity; 13: a V-shaped groove; 14: a hinge; 15: a clamp; 20: a tooth socket; 21: a first end face; 30: tooth blanks; 31: a second end face; 61: a first gear; 62: a second gear.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In one embodiment, as shown in FIG. 1, there is provided a key processing machine comprising:

the working table 1 is used for clamping the key die 2 and the key blank 3.

And the feed mechanism 4 is used for driving the workbench 1 to feed, and the workbench 1 is arranged on the feed mechanism 4.

The machining mechanism comprises a copying assembly for copying the key die 2 and a cutting assembly for cutting the key blank 3.

And the rotating mechanism is arranged between the workbench 1 and the feed mechanism 4 and is used for driving the workbench 1 to rotate relative to the feed mechanism 4 so that the rotating axis of the tooth blank 30 of the key blank 3 is vertical to the cutting direction.

The feeding mechanism 4 can drive the workbench 1 to complete feeding and retracting, so that the profiling component can profile the tooth groove 20 of the key die 2, and the cutting component can cut the tooth blank 30 according to the profiling result. The cutting method used in the cutting assembly may be a common machining method such as cutting and grinding, or an advanced manufacturing method such as plasma arc cutting. The cutting direction is a direction in which the cutting assembly removes the excess material from the blank 30, and the cutting assembly is used to cut the key blank 3 in the cutting direction. The rotating mechanism may include a mechanism that converts a reciprocating motion into a rotating motion, and may include a mechanism that transmits a torque of the rotating motion. The rotation axis of the tooth blank 30 of the key blank 3 can be made perpendicular to the cutting direction by setting the clamping direction of the clamp to the key blank 3 and setting the rotation direction of the table 1.

Profiling of the key cavity 20 of the key die 2 by the key processing machine is generally accomplished by a profiling assembly in intimate contact with the first end surface 21 of the key die 2 and moving transversely of the first end surface 21 in the direction of the key shank.

The first end face 21 is a convex arc-shaped key, the first end face 21 is an arc line on a tangent plane perpendicular to the key rod direction, and the copying assembly needs to move along the arc line to copy the convex arc-shaped first end face 21.

The profiling assembly of the key processing machine is mounted on a plane which is parallel to the cutting direction and perpendicular to the key shaft direction. The axis of rotation of the tooth blank 30 of the key blank 3 is perpendicular to the cutting direction, and the tooth grooves 20 of the key die 2 are parallel to the direction of the tooth blank 30 when mounted. Thus, the axis of rotation of the gullet 20 is perpendicular to the plane in which the profile assembly is mounted. The tooth socket 20 and the profile modeling component can move relatively in the plane where the profile modeling component is installed, so that the profile modeling component can move along the arc, and the profile modeling of the first end face 21 is completed.

In the key processing machine of the present embodiment, the copying unit is brought into contact with the first end surface 21 of the tooth groove 20 to obtain one contact position at the time of copying. At this time, the working table 1 rotates to drive the key mold 2 and the key blank 3 to rotate together. When the key die 2 is rotated, the first end surfaces 21 of the tooth grooves 20 are simultaneously rotated, and the contact position can be moved up and down along the first end surfaces 21 of the tooth grooves 20 in the plane in which the copying assembly is mounted. This has the effect that the first end face 21 of the gullet 20 and the copying assembly move relative to each other in the plane in which the copying assembly is mounted, and the copying assembly can copy the first end face 21. During copying, the movement state of the key blank 3 is identical to that of the key die 2, so that the cutting assembly machines the second end face 31 of the tooth blank 30 according to the copying result when the key blank 3 is rotated. By using the key processing machine of the present embodiment, a new key having a protruding arc-shaped end surface of the tooth space can be processed by using the key having the first end surface 21 as the protruding arc-shaped key die 2. The new key is in the use, compares in the terminal surface that current key processing machine processed and lacks the key of protrusion arc, can reduce the wearing and tearing of terminal surface, improves the life of key.

In one embodiment, a key processing machine is provided. The rotating mechanism comprises a rotating pair, the rotating pair is connected with the workbench 1 and the feed mechanism 4, and the rotating shaft of the rotating pair is vertical to the cutting direction.

Wherein, the revolute pair includes but is not limited to hinge, hydraulic hinge, bearing revolute pair. The rotating shaft of the rotating pair is perpendicular to the cutting direction, so that the rotating shaft of the workbench 1 is always perpendicular to the cutting direction when the workbench 1 rotates. Therefore, when the second end face 31 rotates along with the workbench 1, the cutting of the second end face 31 by the cutter cannot generate deviation.

The key processing machine provided by the embodiment stabilizes the rotation of the table 1 by providing the revolute pair, thereby improving the processing quality of the second end surface 31.

In one embodiment, a key processing machine is provided. The rotation mechanism further comprises a drive assembly for providing a torque for rotation of the table 1.

Wherein, the driving assembly can be an assembly capable of driving the two objects to rotate relatively. Preferably, it may be a mechanical or electrical component. Further preferably, the drive assembly is a gear assembly.

The driving assembly of the embodiment provides torque for the rotation of the workbench 1, so that the rotation of the second end surface 31 of the tooth blank 30 is more stable, and the processing quality of the second end surface 31 is improved.

In one embodiment, a key processing machine is provided. The driving assembly comprises a handle 6 which is arranged on the feed mechanism 4, and the handle 6 is a cylinder and can rotate around the axis of the handle. A first gear 61 is installed on the handle 6, a second gear 62 matched with the first gear 61 is installed on the workbench 1, and the axis of the second gear 62 is coaxial with the rotating shaft of the rotating pair.

Wherein the handle 6 can be mounted on the feed mechanism 4 by means of bearings, so that the handle 6 can rotate about its own axis. Preferably, one of the first gear 61 and the second gear 62 is a spur gear, and the other is a face gear. It is further preferred that the first gear 61 and the second gear 62 are face gears, and the axes of the first gear 61 and the second gear 62 may not intersect when mounted.

In the driving assembly provided in the present embodiment, the rotating handle 6 generates a torque, and the first gear 61 and the second gear 62 transmit the torque to the table 1, so that the table 1 rotates. Thus, in operation, the rotation of the table 1 can be controlled by rotating the handle 6 with one hand. The key processing machine of the embodiment has simple structure, can be operated by one hand and has high working efficiency.

In one embodiment, a key processing machine is provided. The rotation axis of the handle 6 is perpendicular to the rotation axis of the table 1.

According to the installation mode of the handle 6 provided by the embodiment, the rotation of the handle 6 and the rotation of the workbench 1 can not interfere with each other, and the operation comfort is improved. And the handle 6 is pushed to enable the workbench 1 to approach the cutter to complete the feeding operation, so that the feeding and rotating operation of the workbench 1 can be completed by one hand, and the working efficiency is further improved.

In one embodiment, a key processing machine is provided. The first gear 61 and the second gear 62 are each a half gear.

Here, the actual rotation angle of the table 1 is smaller than 360 degrees, and therefore the number of teeth included in the first gear 61 and the second gear 62 can be determined according to the maximum actual rotation angle of the table 1. The first gear 61 and the second gear 62 are half gears, so that the installation space can be reduced, the size of the key processing machine is reduced, and the key processing machine is convenient to use and carry.

In one embodiment, a key processing machine is provided. The profiling component comprises a guide pin 5, the guide pin 5 is sheet-shaped, and the side surface of the guide pin 5 is a profiling surface and is used for profiling the tooth groove 20 of the key die 2.

The guide pin 5 makes line contact with the first end surface 21 when following the gullet 20. The contact line moves at the side of the lead 5 as the first end face 21 rotates. When a needle-shaped lead is used, the first end surface 21 makes point contact with the needle-shaped lead. As the first end surface 21 rotates, the contact point may move to the side of the tip of the lead, causing a tracking error. The first end face 21 of the gullet 20 is thus contoured more accurately using the blade-like guide pin 5.

In one embodiment, a key processing machine is provided. The profiling surface is a circular arc surface and is abutted against the first end surface 21 of the tooth groove 20.

The present embodiment is a further improvement of the processing mechanism. During copying, the first end surface 21 contacts with the copying surface and generates elasticity to the copying surface, and pushes the guide pin 5 to the limit position. The profiling surface is a circular arc surface, and the first end surface 21 is a convex arc, so that in the rotating process, the profiling surface and the first end surface 21 can be in line contact, and when the stress is uneven, the profiling surface can also be in effective contact. Therefore, the guide pin 5 with the profiling surface being the arc surface can keep the profiling surface in close contact with the first end surface 21 in the profiling process, the problem that the contact between the first end surface 21 and the profiling surface is discontinuous is reduced, and the profiling quality is improved.

In one embodiment, a key processing machine is provided. The processing mechanism further comprises a guide needle seat 8, a through hole is formed in the guide needle seat 8, a limiting sleeve 10 is arranged in the through hole, and a stepped hole is formed in the limiting sleeve 10. The guide pin 5 is arranged at one end of the through hole and is connected with a movable bolt 9. The other end of the through hole is provided with a limiting bolt 11 in threaded connection with a limiting sleeve 10, a limiting inner cavity 12 is formed between the limiting bolt 11 and the shoulder of the stepped hole, the head of the movable bolt 9 is arranged in the limiting inner cavity 12, and the limiting inner cavity 12 is used for limiting the axial movement of the head of the movable bolt 9.

Wherein, the head of the movable bolt 9 is arranged in the limit inner cavity 12, and when the axial length in the limit inner cavity 12 allows, the head of the movable bolt 9 can move along the axial direction. The rod part of the movable bolt 9 extends out of the limit inner cavity 12 and is connected with the guide pin 5. Thereby controlling the limit position of the guide pin 5 by controlling the axial length in the limit inner cavity 12. The limiting bolt 11 is rotated to enable the limiting bolt 11 to axially move along the thread of the limiting sleeve 10, so that the axial length in the limiting inner cavity 12 is adjusted, and the limiting position of the guide pin 5 is adjusted.

After the tool is worn, the machining position of the tool deviates from the original position, and if the guide pin 5 continues to use the original limit position for copying, the material removed during cutting of the tool is less than that actually required to be removed, so that the machining error is too large, and the machined key cannot be used. The key processing machine provided by the embodiment can adjust the limit position of the guide pin 5, and reduces the processing error caused by the abrasion of the cutter, thereby prolonging the service life of the cutter and saving the cost.

In one embodiment, a key processing machine is provided. The processing mechanism comprises a saw blade milling cutter 7, the saw blade milling cutter 7 is used for cutting and processing the key blank 3, and the cutting direction is the rotating direction of the saw blade milling cutter 7.

The embodiment provides a tool of a key processing machine, the saw blade milling cutter 7 has strong cutting force, still keeps good processing effect after being sharpened for many times, and can save cost. When the tooth blank 30 and the blade cutter 7 are relatively rotated, the machining position therebetween is moved on the outer circumferential surface of the blade cutter 7. And the cutting force is the same at any position on the outer circumferential surface of the blade milling cutter 7. Therefore, when the tooth blank 30 rotates, the cutting force of the blade milling cutter 7 on the second end surface 31 is not changed, and the processing quality of the second end surface 31 is improved.

In one embodiment, as shown in fig. 1 and 2, a key processing machine is provided. The method comprises the following steps: the device comprises a workbench 1, a feed mechanism 4, a processing mechanism and a rotating mechanism. The feed mechanism 4 is connected with the workbench 1 and drives the workbench 1 to feed. The rotating mechanism is provided with a hinge 14 for hinging the worktable 1 and the feed mechanism 4, and the rotating shaft of the hinge 14 is vertical to the cutting direction. The feed mechanism 4 is provided with a handle 6 through a bearing, and the rotating shaft of the handle 6 is vertical to the rotating shaft of the workbench 1. The handle 6 is provided with a first gear 61, the workbench 1 is provided with a second gear 62 matched with the first gear 61, and the axis of the second gear 62 is coaxial with the rotating shaft of the hinge 14. The first gear 61 and the second gear 62 are both half gears. Two clamps 15 for respectively clamping the key die 2 and the key blank 3 are arranged on the workbench 1, and the two clamps 15 are both provided with V-shaped grooves 13. The tooth blank 30 of the key blank 3 is held by the holder 15 such that the tooth blank 30 is parallel to the rotation axis of the hinge 14, and the rotation axis of the tooth blank 30 can be made perpendicular to the cutting direction.

The processing mechanism comprises a saw blade milling cutter 7, a guide pin 5 and a guide pin seat 8. The guide needle 5 is sheet-shaped, and the side surface is a circular arc profiling surface. As shown in fig. 3, a through hole is formed in the needle guiding base 8, a limiting sleeve 10 is arranged in the through hole, and a stepped hole is formed in the limiting sleeve 10. The guide pin 5 is arranged at one end of the through hole and is connected with a movable bolt 9. The other end of the through hole is provided with a limiting bolt 11 in threaded connection with a limiting sleeve 10, a limiting inner cavity 12 is formed between the limiting bolt 11 and the shoulder of the stepped hole, the head of the movable bolt 9 is arranged in the limiting inner cavity 12, and the axial movement of the head is limited by the limiting inner cavity 12.

As shown in FIG. 4, a key die 2 has a spline 20 whose first end face 21 is formed in a convex arc shape and whose shank is formed in a cylindrical shape. As shown in fig. 5, the second end surface 31 of the key blank 3 is a surface of the tooth blank 30 parallel to the shaft portion.

The following is a process of processing a key using the key processing machine provided in the present embodiment:

first, as shown in fig. 6, the key mold 2 is mounted on the corresponding jig 15 so that the shank of the key is held in the V-shaped groove 13. The holding angle of the key die 2 is adjusted so that the tooth grooves 20 of the key die 2 face the needle 5. When the key blank 3 is installed, the same clamping angle with the key die 2 is kept. The lowest point of the first end surface 21 is brought into contact with the guide pin 5 by trial contact of the gullet 20 with the guide pin 5. The key processing machine is then started to operate the blade milling cutter 7.

Secondly, the worktable 1 is driven to feed through the feed mechanism 4, the positions of the tooth space 20 of the key die 2 and the guide pin 5 are compared, the feed mechanism 4 is adjusted to align the tooth space 20 and the guide pin 5, and the first end surface 21 is in line contact with the guide pin 5. The table is pushed by the handle 6 to move further towards the guide pin 5 so that the key mold 2 abuts the guide pin 5 to the extreme position. In this process, the blade cutter 7 cuts the tooth blank 30.

Finally, the handle 6 is rotated to rotate the table 1 about the rotation axis of the hinge 14. The contact line between the first end surface 21 and the guide pin 5 is moved on the copying surface of the guide pin 5, and the guide pin 5 is moved up and down along the first end surface 21 on a plane perpendicular to the key lever direction, thereby completing the copying of the first end surface 21. Meanwhile, the blade cutter 7 cuts the second end surface 31 of the tooth blank 30 to obtain the second end surface 31 having the same shape as the first end surface 21 of the tooth groove 20.

The key processing machine according to the present embodiment can profile the first end surface 21 of the tooth groove 20 and process the second end surface 31 of the blank tooth 30 into a convex arc shape having the same shape as the first end surface 21. By using the key processing machine of the present embodiment, a new key having a protruding arc-shaped end surface of the tooth space can be processed by using the key having the first end surface 21 as the protruding arc-shaped key die 2. The new key is in the use, compares in the terminal surface that current key processing machine processed and lacks the key of protrusion arc, can reduce the wearing and tearing of terminal surface, improves the life of key. The key processing machine provided by the embodiment has simple and stable structure and high reliability; the cutter can be continuously used after being abraded and polished, so that the cost is saved; and during processing, the operation is simple and convenient.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields will be covered by the scope of the present invention.

Claims (10)

1. A key processing machine, comprising:

the working table (1) is used for clamping the key die (2) and the key blank (3);

the feed mechanism (4) is used for driving the workbench (1) to feed, and the workbench (1) is arranged on the feed mechanism (4);

the processing mechanism comprises a copying component for copying the key die (2) and a cutting component for cutting and processing the key blank (3);

the rotating mechanism is arranged between the workbench (1) and the feed mechanism (4) and used for driving the workbench (1) to rotate relative to the feed mechanism (4) and enabling the rotating axis of the tooth blank (30) of the key blank (3) to be perpendicular to the cutting direction.

2. A key processing machine according to claim 1, characterized in that said turning mechanism comprises a turning pair connecting said table (1) and said feed mechanism (4), the axis of rotation of said turning pair being perpendicular to said cutting direction.

3. A key processing machine according to claim 2, wherein said turning mechanism further comprises a drive assembly for providing a torque for the turning of said table (1).

4. A key processing machine according to claim 3, wherein said drive assembly comprises a handle (6) mounted on said feed mechanism (4), said handle (6) being cylindrical and rotatable about its axis; a first gear (61) is installed on the handle (6), a second gear (62) matched with the first gear (61) is installed on the workbench (1), and the axis of the second gear (62) is coaxial with the rotating shaft of the rotating pair.

5. Key processing machine according to claim 4, characterized in that the rotation axis of the handle (6) is perpendicular to the rotation axis of the table (1).

6. The key processing machine according to claim 4 or 5, wherein said first gear wheel (61) and said second gear wheel (62) are each half-gear wheels.

7. The key processing machine according to claim 1, characterized in that the profiling assembly comprises a guide pin (5), the guide pin (5) being sheet-like, the side faces of the guide pin (5) being profiled faces for profiling the tooth grooves (20) of the key die (2).

8. The key processing machine according to claim 7, wherein said contoured surface is a circular arc surface, said contoured surface abutting a first end surface (21) of said tooth slot (20).

9. The key processing machine according to claim 7 or 8, wherein said processing mechanism further comprises a needle guide base (8), said needle guide base (8) is provided with a through hole, a limiting sleeve (10) is arranged in said through hole, and a stepped hole is arranged in said limiting sleeve (10); the guide pin (5) is arranged at one end of the through hole, and the guide pin (5) is connected with a movable bolt (9); the other end of through-hole be provided with spacing bolt (11) of spacing sleeve (10) threaded connection, spacing bolt (11) with form spacing inner chamber (12) between the hole shoulder of shoulder hole, the head setting of removal bolt (9) is in spacing inner chamber (12), spacing inner chamber (12) are used for the restriction removal bolt (9) the axial displacement of head.

10. A key processing machine according to any one of claims 1-5, 7, 8, characterized in that said processing means comprises a blade mill (7), said blade mill (7) being adapted to cut said key blank (3), said cutting direction being the direction of rotation of said blade mill (7).

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