Key clamp and machine tool for machining key back

Abstract

The invention discloses a key clamp and a machine tool for machining the back of a key, and the key clamp comprises a first positioning piece, a second positioning piece, a third positioning piece and a fourth positioning piece, a second action part is arranged on the second positioning piece; the third positioning piece is arranged in a sliding manner, and a third positioning convex part is arranged on the third positioning piece; the linkage part is arranged in an overturning manner; the elastic piece is respectively connected with the linkage piece and the third positioning piece; and the driving device drives the linkage piece to turn over. By the adoption of the scheme, the key clamp and the machine tool for machining the key back of the key can clamp the key in the width direction and then clamp the key in the thickness direction so as to improve the clamping precision of the key.

Description

Technical Field

[0001] The present invention belongs to the field of key processing equipment, and particularly relates to a key fixture and a machine tool for processing the back of a key. Background Art

[0002] As Figure 1 shown, the existing anti-theft door key includes a key handle 91 and a key head 92. The key handle 91 is in the shape of a flat long strip. Key slots 911 are provided on both sides of the thickness of the key handle. The key slots 911 extend along the length direction of the key handle 91 and penetrate to one end of the key handle 91 away from the key head 92. Both sides of the width of the key handle 91 are the back of the key 912. In addition, to adapt to a specific lock, the back of the key 912 needs to be milled to form Figure 1 the arc shape shown.

[0003] To achieve mechanized processing, the key to be milled is fixed and clamped by a fixture, and then the back of the key is milled by a milling device. Specifically, the existing fixture is usually of an upper and lower structure. The key is placed in the fixture of the upper and lower structure, and the width direction is positioned by the protruding part on the fixture cooperating with the key slot, and then fixed by clamping up and down.

[0004] The problems existing in the above-mentioned milling process of the back of the key are as follows: The protruding part in the fixture is only close to the shape of the key slot. When the fixture and the key are not clamped, the key is loose in the width direction. When clamping the key in the loose state in the width direction of the key, there will be a deviation in the positioning of the key in the width direction, resulting in poor accuracy of the milled back of the key and unable to meet the requirements of high-precision keys. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a key fixture and a machine tool for processing the back of a key, which first clamp the key in the width direction and then clamp the key in the thickness direction to improve the clamping accuracy of the key.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A key fixture, characterized in that it includes: a first positioning member which is fixedly arranged and has a first positioning protrusion thereon; a second positioning member which has a second acting portion thereon, and the second acting portion moves closer to or away from the first positioning protrusion; a third positioning member which is slidably arranged relative to the first positioning member along a first direction and has a third positioning protrusion thereon; a linkage member which is arranged to be flipped; an elastic member which is respectively connected to the linkage member and the third positioning member; and a driving device which is used to drive the linkage member to flip; the key to be clamped is inserted along a second direction and the key grooves are respectively engaged with the first positioning protrusion and the third positioning protrusion for pre-positioning, the driving device drives the linkage member to flip so as to drive the third positioning member to slide under the action of the elastic member, and the sliding third positioning member drives the third positioning protrusion to move to clamp and position the key in the first direction, and the linkage member continues to flip to drive the second acting portion to move, and the moving second acting portion approaches the first positioning protrusion to clamp and fix the key.

[0008] The present invention is further arranged as: the second acting portion has a second positioning protrusion thereon; the third positioning member has a fourth positioning protrusion thereon; the first positioning protrusion and the third positioning protrusion are arranged in alignment, and the second positioning protrusion and the fourth positioning protrusion are arranged in alignment; in the state where the key is inserted, the third positioning protrusion and the fourth positioning protrusion are located on both sides of the thickness of the key.

[0009] The present invention is further arranged as: the third positioning member includes a third clamping portion and a fourth clamping portion, the third positioning protrusion is arranged on the third clamping portion, and the fourth positioning protrusion is arranged on the fourth clamping portion; the number of the first positioning members is two, and the two first positioning members are arranged at intervals, and the two first positioning members are located on both sides of the third clamping portion along the second direction; the second acting portion has two spaced second clamping portions thereon, and the two second clamping portions are located on both sides of the fourth clamping portion along the second direction.

[0010] The present invention is further arranged as: the second positioning member further includes a second mounting portion and a second deforming portion, the second deforming portion connects the second acting portion and the second mounting portion, the second mounting portion is fixedly arranged, and the second deforming portion deforms when the second acting portion moves to adapt to the movement of the second acting portion.

[0011] The present invention is further arranged as: the elastic member is in a sheet shape and is arranged parallel to the second direction; and / or, the third positioning member is provided with a first fitting slot for inserting the elastic member; and / or, the linkage member is provided with a second fitting slot for inserting the elastic member.

[0012] The present invention is further arranged as: it further includes a first carrier, and the first positioning member, the second positioning member and the third positioning member are detachably arranged on the first carrier; and / or, a mounting seat is detachably arranged on the linkage member, and the elastic member is detachably arranged on the mounting seat; and / or, the driving device adopts a cylinder.

[0013] A machine tool for processing the back of a key, characterized in that it includes: a back milling device; the above-mentioned key fixture; the back milling device includes: a second carrier; a swing frame, the rotation axis of the swing frame is the same as the second direction; a milling head, the milling head is rotatably arranged on the swing frame, and the rotation axis of the milling head and the rotation axis of the swing frame are non-collinear and parallel to each other; a reciprocating drive mechanism, the reciprocating drive mechanism is used to drive the swing frame to reciprocate; the key to be processed is clamped and fixed by the key fixture, and then under the action of the reciprocating drive mechanism, the swing frame reciprocates, so that the rotating milling head passes through the back of the key and processes the back of the key into an arc shape.

[0014] The present invention is further arranged as: the reciprocating drive mechanism includes a power motor, an eccentric output member, a linkage swing rod, a linkage sliding seat, and a linkage swing piece; the power motor is used to drive the eccentric output member to rotate, the linkage sliding seat is slidably arranged along the first direction, both ends of the linkage swing rod are respectively hinged to the eccentric output member and the linkage sliding seat, and the rotation axis of the linkage swing rod relative to the eccentric output member and the rotation axis of the output shaft of the power motor are non-collinear and parallel to each other, the linkage swing piece is fixedly arranged on the swing frame, a linkage slide rail slidably matched with the linkage swing piece is arranged on the linkage sliding seat, and the track direction of the linkage slide rail is arranged vertically.

[0015] The present invention is further arranged as: an amplitude adjustment slide rail is arranged on the eccentric output member, the track direction of the amplitude adjustment slide rail extends along the radial direction of the output shaft of the power motor, a locking member is arranged in the amplitude adjustment slide rail, and the linkage swing rod is hinged to the locking member.

[0016] The present invention is further arranged as: it further includes a loading rack, a transmission structure, and a deburring device; the number of the key fixtures is two groups, one group of key fixtures is used to cooperate with the back milling device, and the other group of key fixtures is used to cooperate with the deburring device; the loading rack includes a loading track and an ejection structure, the loading track extends vertically for the keys to be processed to be arranged in the loading track, and the ejection structure is used to push out the keys at the bottom of the loading track; the transmission structure includes a transmission sliding seat, a transmission power structure, and a plurality of first clamping claws, the transmission power structure is used to drive the transmission sliding seat to reciprocate along the first direction, each of the first clamping claws is arranged on the transmission sliding seat at intervals along the first direction, and the transmission structure is used to transfer the keys on the loading rack to the key fixture corresponding to the back milling device, and to transfer the keys on the key fixture corresponding to the back milling device to the key fixture corresponding to the deburring device.

[0017] By adopting the above technical solution, the key to be clamped is inserted into the key fixture from the front to the back, and the key grooves are respectively engaged with the first positioning convex portion and the third positioning convex portion for pre-positioning. Then, the driving device drives the linkage member to flip, so that under the action of the elastic member, the third positioning member is driven to slide. The sliding third positioning member drives the third positioning convex portion to move, and the key is clamped and positioned in the left-right direction. Then, with the third positioning member kept fixed, the linkage member continues to flip to contact and drive the second action portion to move. The moving second action portion moves downward close to the first positioning convex portion to clamp and fix the key, so that the key is first positioned in the width direction and then in the thickness direction, that is, high-precision positioning is achieved. Thus, high-precision machining can be realized for the back of the key subsequently, and machining deviation caused by the deviation of key positioning can be prevented. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the key;

[0020] Figure 2 Assembly drawing of Embodiment 1 of the present invention;

[0021] Figure 3 Right view of Embodiment 1 of the present invention;

[0022] Figure 4 For Figure 3 Cross-sectional view taken along A-A in

[0023] Figure 5 For Figure 3 Cross-sectional view taken along B-B in

[0024] Figure 6 For Figure 4 Partial enlarged view of

[0025] Figure 7 For Figure 5 Partial enlarged view of

[0026] Figure 8 Assembly drawing of some structures in Embodiment 1 of the present invention;

[0027] Figure 9 Exploded view of some structures in Embodiment 1 of the present invention;

[0028] Figure 10 Assembly drawing of Embodiment 2 of the present invention;

[0029] Figure 11 It is the assembly drawing of the milling back device in the second embodiment of the present invention;

[0030] Figure 12 It is the assembly drawing of the partial structure of the milling back device in the second embodiment of the present invention;

[0031] Figure 13 It is the exploded view of the partial structure of the milling back device in the second embodiment of the present invention;

[0032] Figure 14 It is the assembly drawing of the eccentric output member and the linkage swing rod in the second embodiment of the present invention;

[0033] Figure 15 It is the exploded view of the eccentric output member and the linkage swing rod in the second embodiment of the present invention;

[0034] Figure 16 It is the assembly drawing of the loading rack in the second embodiment of the present invention;

[0035] Figure 17 It is the exploded view of the loading rack in the second embodiment of the present invention;

[0036] Figure 18 It is the assembly drawing of the transmission structure in the second embodiment of the present invention;

[0037] Figure 19 It is the assembly drawing of the first jaw in the second embodiment of the present invention;

[0038] Figure 20 It is the assembly drawing of the partial structure of the first jaw in the second embodiment of the present invention;

[0039] Figure 21 It is the schematic diagram of the first linkage swing member and the second linkage swing member in the second embodiment of the present invention;

[0040] Figure 22 It is the assembly drawing of the second jaw in the second embodiment of the present invention;

[0041] Figure 23 It is the assembly drawing of the partial structure of the second jaw in the second embodiment of the present invention;

[0042] Figure 24 It is the assembly drawing of the deburring device in the second embodiment of the present invention.

[0043] Explanation of reference numerals:

[0044] 1. First carrier;

[0045] 11. Linkage member; 12. Elastic member; 13. Driving device; 14. First ribbed portion;

[0046] 111. Second mating slot; 112. Mounting base;

[0047] 2. First positioning member;

[0048] 21. First positioning protrusion; 22. Second ribbed portion;

[0049] 3. Second positioning member;

[0050] 31. Second positioning protrusion; 32. Second mounting portion; 33. Second deformation portion; 34. Second actuating portion;

[0051] 341. Second clamping portion;

[0052] 4. Third positioning member;

[0053] 41. Third positioning protrusion; 42. Fourth positioning protrusion; 43. Third clamping portion; 44. Fourth clamping portion; 45. First mating slot;

[0054] 5. Milling back device;

[0055] 51. Second carrier; 52. Swing frame; 53. Milling head; 54. Milling motor; 55. Reciprocating drive mechanism;

[0056] 551. Power motor; 552. Eccentric output member; 553. Linkage swing rod; 554. Linkage sliding seat; 555. Linkage swing member;

[0057] 5521. Amplitude adjustment slide rail; 5522. Locking member; 5541. Linkage slide rail;

[0058] 6. Loading rack;

[0059] 61. Loading track; 62. Blank dropping plate; 63. Ejecting structure;

[0060] 631. Ejecting cylinder; 632. Ejecting plate;

[0061] 7. Transmission structure;

[0062] 71. Transmission sliding seat; 72. Transmission power structure; 73. First jaw; 74. Second jaw;

[0063] 701. First seat body; 702. First sliding cylinder; 703. Second seat body; 704. Second sliding cylinder; 705. Rotary cylinder; 706. Third seat body; 707. Linkage sliding member; 7081. First linkage swing member; 7082. Second linkage swing member; 7083. First strip-shaped groove; 7091. First claw portion; 7092. Second claw portion; 7093. Fitting groove;

[0064] 8. Deburring device;

[0065] 81. The third carrier; 82. The deburring sliding seat; 83. The deburring power structure; 84. The turning frame; 85. The deburring bayonet; 86. The turning cylinder;

[0066] 91. key handle; 92. key head;

[0067] 911, key slot; 912, key back;

[0068] 10. Rack. DETAILED DESCRIPTION

[0069] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of the present invention, the present invention is described in detail with respect to some specific embodiments of the present invention. It should be noted that the following are only some specific implementation methods of the present invention, which are only part of the embodiments of the present invention, wherein the specific and direct description of the relevant structure is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention. The conventional selection and replacement made by those skilled in the art under the guidance of the present invention should be regarded as within the scope of the present invention.

[0070] Embodiment 1:

[0071] The invention discloses a key clamp for processing and forming a key Figure 1 The key includes a key handle 91 and a key head 92. The key handle 91 is in the shape of a flat long strip, and the width direction of the key handle 91 is along the left-right direction, the length direction of the key handle 91 is along the front-back direction, and the thickness of the key handle 91 is along the vertical direction. Key slots 911 are set on the upper and lower sides of the key handle 91, and the key slots 911 extend along the length direction of the key handle 91 and penetrate to the end of the key handle 91 away from the key head 92. The two sides of the width of the key handle 91 are key backs 912. The key backs 912 are flat before processing and form an arc shape after processing.

[0072] The left-right direction is defined as a first direction, and the front-back direction is defined as a second direction.

[0073] like Figures 2 - 9 As shown, the key fixture includes:

[0074] The first carrier 1;

[0075] A first positioning member 2, the first positioning member 2 is fixedly arranged on the upper right side of the carrier by means of bolts, the first positioning member 2 is provided with a first positioning protrusion 21 protruding upward, and the first positioning protrusion 21 is in the shape of a strip extending forward and backward;

[0076] The second positioning member 3 is disposed on the first carrier 1, and the second positioning member 3 is disposed above the first positioning member 2 and has a second action portion 34, and the second action portion 34 moves downward to approach the first positioning protrusion 21 or upward to move away from the first positioning protrusion 21;

[0077] A third positioning member 4, the third positioning member 4 is slidably disposed on the first carrier 1 along the left-right direction by means of a guide rail clamping, and a third positioning protrusion 41 is protrudingly disposed on the third positioning member 4;

[0078] The linkage member 11 is in the shape of an elongated strip, and the middle part of the linkage member 11 is flipped and installed on the first carrier 1 by means of an insertion rod;

[0079] An elastic member 12, the elastic member 12 is respectively connected to the linkage member 11 and the third positioning member 4; and,

[0080] The driving device 13 is a cylinder, and the driving device 13 is fixedly installed at the lower left side of the first carrier 1 , and the output shaft of the driving device 13 faces upward and points to the linkage member 11 .

[0081] Therefore, the key to be clamped is inserted into the key clamp from front to back, and the key slot 911 is pre-positioned by cooperating with the first positioning protrusion 21 and the third positioning protrusion 41 respectively, and then the driving device 13 drives the linkage member 11 to flip so that the third positioning member 4 can slide under the action of the elastic member 12, and the sliding third positioning member 4 drives the third positioning protrusion 41 to move and clamp and position the key in the left and right directions. Then, while the third positioning member 4 remains fixed, the linkage member 11 continues to flip to contact and drive the second action part 34 to move, and the moving second action part 34 moves downward and close to the first positioning protrusion 21 to clamp and fix the key, so that the key is first positioned in the width direction and then in the thickness direction, that is, high-precision positioning is achieved, so that the subsequent processing of the key back 912 can achieve high-precision processing and prevent processing deviation caused by key positioning deviation.

[0082] It should be noted that the clamp is also applicable to other suitable processing procedures.

[0083] Preferably, the second action portion 34 is provided with a second positioning protrusion 31 protruding downward, and the first positioning protrusion 21 is in the shape of a strip extending forward and backward; and the third positioning member 4 is provided with a fourth positioning protrusion 42; wherein, the first positioning protrusion 21 and the third positioning protrusion 41 are arranged in opposition, and the second positioning protrusion 31 and the fourth positioning protrusion 42 are arranged in opposition; when the key is inserted, the third positioning protrusion 41 and the fourth positioning protrusion 42 are located on both sides of the thickness of the key.

[0084] The first positioning convex part 21 and the third positioning convex part 41 are used to align and snap-connect with the lower key slot 911, and the second positioning convex part 31 and the fourth positioning convex part 42 are used to align and snap-connect with the upper key slot 911. Therefore, when the third positioning member 4 moves leftward to clamp the key, both the upper and lower sides can be stressed to improve stability.

[0085] Preferably, the third positioning member 4 includes a third clamping part 43 on the lower side and a fourth clamping part 44 on the upper side. The third positioning convex part 41 is arranged on the third clamping part 43, and the fourth positioning convex part 42 is arranged on the fourth clamping part 44. In addition, the number of the first positioning members 2 is two, and the two first positioning members 2 are arranged at intervals. The two first positioning members 2 are located on the front and rear sides of the third clamping part 43. Similarly, two second clamping parts 341 are arranged at intervals on the second moving part 34, and the two second clamping parts 341 are located on the front and rear sides of the fourth clamping part 44.

[0086] Therefore, the two first positioning members 2 cooperate with the key slot 911 through the first positioning convex part 21 on the front and rear sides of the third clamping part 43, and the two second positioning members 3 cooperate with the key slot 911 through the second positioning convex part 31 on the front and rear sides of the fourth clamping part 44. Thus, when the third positioning member 4 moves leftward to clamp the key, the middle part is subjected to the leftward acting force of the third positioning convex part 41 and the fourth positioning convex part 42, and the front and rear sides are both subjected to the acting force of the first positioning convex part 21 and the second positioning convex part 31 to ensure the clamping stability.

[0087] Preferably, the second positioning member 3 further includes a second mounting part 32 and a second deformation part 33. The second deformation part 33 connects the second moving part 34 and the second mounting part 32. The second mounting part 32 is fixedly mounted on the first carrier 1 by bolts. The second deformation part 33 adopts a thin-wall structure and has elasticity. Therefore, when the linkage member 11 flips and acts on the second moving part 34, the movement of the second moving part 34 is adapted through the deformation of the second deformation part 33.

[0088] Wherein, the elastic member 12 in this embodiment is in a sheet shape and is arranged parallel to the front and rear directions. In addition, a first mating slot 45 for inserting the elastic member 12 is arranged on the upper side of the third positioning member 4; a second mating slot 111 for inserting the elastic member 12 is arranged on the lower side of the linkage member 11, and bolts are arranged on the linkage member 11 to lock the elastic member 12.

[0089] Therefore, when the linkage member 11 flips, the upper end of the elastic member 12 is fixed, and the lower end is not fixed, so it can move in the first mating slot 45 to adapt to the movement of the third positioning member 4, and the elastic member 12 part between the first mating slot 45 and the second mating slot 111 is bent and deformed.

[0090] Preferably, the first positioning member 2, the second positioning member 3, and the third positioning member 4 are detachably disposed on the first carrier 1 by means of bolts or the like, so that different first positioning members 2, second positioning members 3, and third positioning members 4 can be replaced to adapt to keys of different models.

[0091] Preferably, a mounting seat 112 is detachably disposed on the linkage member 11 by means of bolts or the like, and the elastic member 12 is detachably disposed on the mounting seat 112. When the elastic member 12 needs to be replaced due to irreversible deformation during long-term use, the mounting seat 112 can be detached from the linkage member 11, and then the elastic member 12 can be detached and replaced. In addition, if the second mating slot 111 is damaged, only the mounting seat 112 needs to be replaced, and there is no need to replace the entire linkage member 11.

[0092] Preferably, a first ribbed portion 14 is provided on the first carrier 1 in this embodiment, and a second ribbed portion 22 is correspondingly provided at the bottom of the first positioning member 2, so as to ensure the high-precision installation of the first positioning member 2 on the first carrier 1 under the cooperation of the first ribbed portion 14 and the second ribbed portion 22. Thus, when the third positioning member 4 clamps the key to the left, as long as the shape and position of the first positioning convex portion 21 are ensured, the precision after the key is clamped can be ensured.

[0093] Embodiment 2:

[0094] As Figures 10 - 24 shown, the present invention discloses a machine tool for machining the back of a key, including a machine frame 10 and the following disposed on the machine frame 10:

[0095] A back milling device 5;

[0096] The key fixture described in Embodiment 1;

[0097] The back milling device 5 includes:

[0098] A second carrier 51, and the second carrier 51 is fixedly installed on the machine frame 10;

[0099] A swing frame 52, the swing frame 52 is cylindrical, and is rotatably installed on the second carrier 51 by means of a bearing. The rotation axis of the swing frame 52 is along the front-rear direction;

[0100] A milling head 53, the milling head 53 is rotatably disposed on the swing frame 52, and the rotation axis of the milling head 53 and the rotation axis of the swing frame 52 are non-collinear and parallel to each other;

[0101] A milling motor 54, the milling motor 54 is fixedly installed at the rear side of the swing frame 52, and the output shaft of the milling motor 54 is connected to the milling head 53 to drive the milling head 53 to rotate,

[0102] A reciprocating drive mechanism 55, and the reciprocating drive mechanism 55 is used to drive the swing frame 52 to reciprocate;

[0103] Specifically, the reciprocating drive mechanism 55 includes a power motor 551, an eccentric output member 552, a linkage swing rod 553, a linkage sliding seat 554, and a linkage swinging member 555. Among them, the power motor 551 is fixedly installed on the second carrier 51 by means of bolts or the like. The output shaft of the power motor 551 faces forward and is fixedly installed with the eccentric output member 552 by means of key connection, and the rotation of the power motor 551 drives the eccentric output member 552 to rotate. The linkage sliding seat 554 is slidably arranged on the second carrier 51 in the left-right direction by means of a slide rail. The two ends of the linkage swing rod 553 are respectively hinged to the eccentric output member 552 and the linkage sliding seat 554, and the rotation axis of the linkage swing rod 553 relative to the eccentric output member 552 and the rotation axis of the output shaft of the power motor 551 are non-collinear and parallel to each other, so that the rotation of the eccentric output member 552 can drive the linkage sliding seat 554 to reciprocate. Among them, the linkage swinging member 555 is fixedly arranged on the outer periphery of the swing frame 52 by means of bolts, and a linkage slide rail 5541 for sliding cooperation with the linkage swinging member 555 is arranged on the linkage sliding seat 554, and the track direction of the linkage slide rail 5541 is arranged vertically.

[0104] Among them, the key back 912 needs to be located between the milling head 53 and the rotation axis of the swing frame 52.

[0105] Therefore, the key to be processed is clamped and fixed by a key fixture, and the key back 912 to be processed is exposed on the right side. Then, under the action of the reciprocating drive mechanism 55, the swing frame 52 reciprocates, so that the rotating milling head 53 passes through the key back 912 and processes the key back 912 into an arc. Specifically, the power motor 551 drives the eccentric output member 552 to revolve, and the linkage sliding seat 554 reciprocates through the linkage swing rod 553. During the reciprocating sliding of the linkage sliding seat 554, the linkage swinging member 555 drives the swing frame 52 to reciprocate through the cooperation of the linkage slide rail 5541.

[0106] Preferably, an amplitude adjustment slide rail 5521 is arranged on the eccentric output member 552, and the track direction of the amplitude adjustment slide rail 5521 extends along the rotation radius of the output shaft of the power motor 551. A locking member 5522 is arranged in the amplitude adjustment slide rail 5521, and the linkage swing rod 553 is hinged to the locking member 5522. Therefore, the swing amplitude of the swing frame 52 can be controlled by adjusting the distance between the locking member 5522 and the output shaft of the power motor 551, so as to adapt to keys of different thicknesses.

[0107] Specifically, the locking member 5522 is composed of a front half and a rear half. The front half and the rear half are clamped on both sides of the amplitude adjustment slide rail 5521 and locked by bolts and nuts.

[0108] In addition, a loading rack 6, a transmission structure 7, and a deburring device 8 are also provided on the frame 10; among them, the number of key clamps is two groups, one group of key clamps is used to cooperate with the back milling device 5, and the other group of key clamps is used to cooperate with the deburring device 8.

[0109] Therefore, the loading rack 6 is used to provide the keys to be processed, and the keys on the loading rack 6 are transmitted to the corresponding key clamps of the back milling device 5 through the transmission structure 7 for back milling, and the keys on the corresponding key clamps of the back milling device 5 are transmitted to the corresponding key clamps of the deburring device 8 for deburring.

[0110] Specifically, the loading rack 6 includes a loading track 61, a blanking plate 62, and an ejecting structure 63. The loading track 61 extends vertically for the keys to be processed to be arranged in the loading track 61. The blanking plate 62 is located below the loading track 61 so that the keys fall from the lower end of the loading track 61 onto the blanking plate 62 one by one. In addition, the ejecting structure 63 includes an ejecting cylinder 631 and an ejecting plate 632. The ejecting cylinder 631 is fixedly installed below the blanking plate 62, and the output shaft of the ejecting cylinder 631 extends and retracts backward. The ejecting plate 632 is fixedly installed on the output shaft of the ejecting cylinder 631 by bolts, and the ejecting plate 632 slides on the upper surface of the blanking plate 62. Therefore, when the ejecting cylinder 631 works, the keys on the blanking plate 62 are driven forward by the ejecting plate 632 to be ejected for the transmission structure 7 to grab and transmit.

[0111] Specifically, the transmission structure 7 includes a transmission sliding seat 71, a transmission power structure 72, two first clamping jaws 73, and one second clamping jaw 74. The transmission power structure 72 uses a combination of a motor and a lead screw nut to drive the transmission sliding seat 71 to reciprocate left and right. The two first clamping jaws 73 are arranged at intervals in the left-right direction on the upper side of the transmission sliding seat 71. The second clamping jaw 74 is arranged on the right side of the right first clamping jaw 73, and the distance between the second clamping jaw 74 and the right first clamping jaw 73 is the same as the distance between the two first clamping jaws 73.

[0112] Therefore, when the left first clamping jaw 73 grabs the keys on the loading rack 6, the right first clamping jaw 73 grabs the keys on the corresponding key clamps of the back milling device 5, and the second clamping jaw 74 grabs the keys on the corresponding key clamps of the deburring device 8. Then, through the movement of the transmission sliding seat 71, the left first clamping jaw 73 is driven to the corresponding key clamps of the back milling device 5 for loading, the right first clamping jaw 73 is driven to the corresponding key clamps of the deburring device 8 for loading, and the second clamping jaw 74 is driven to the unloading position for unloading.

[0113] Specifically, the first clamping jaw 73 includes a first seat body 701, a first sliding cylinder 702, a second seat body 703, a second sliding cylinder 704, a rotary cylinder 705, a third seat body 706, a linkage sliding member 707, a first linkage swing member 7081, a second linkage swing member 7082, a first claw portion 7091 and a second claw portion 7092. The first seat body 701 is fixedly arranged on the transmission sliding seat 71 by means of bolts or the like to slide along with the transmission sliding seat 71. The second seat body 703 is slidably arranged on the first seat body 701 in the front-back direction by means of a guide rod and a guide sleeve. The first sliding cylinder 702 is fixedly arranged on the first seat body 701, and the output shaft of the first sliding cylinder 702 faces forward and is connected to the second seat body 703 to drive the second seat body 703 to slide back and forth. The second sliding cylinder 704 is fixedly arranged on the front side of the rear plate body of the second seat body 703, and the rotary cylinder 705 is fixedly arranged on the rear side of the rear plate body of the second seat body 703. The output shaft of the second sliding cylinder 704 passes through the rotating seat of the rotary cylinder 705 backward and performs front-back telescoping. The rotating seat of the rotary cylinder 705 faces backward, and the rotation axis is along the front-back direction. The third seat body 706 is fixedly arranged on the rotating seat of the rotary cylinder 705 to be driven to rotate by the rotary cylinder 705. The linkage sliding member 707 is rotatably arranged on the output shaft of the second sliding cylinder 704 by means of a shaft rod to be driven to slide by the second sliding cylinder 704, and the rotation axis is perpendicular to the front-back direction. The first linkage swing member 7081 and the second linkage swing member 7082 are arranged in an L shape, and the middle parts of the L shapes of the first linkage swing member 7081 and the second linkage swing member 7082 are hinged to the third seat body 706 by means of a shaft rod passing through, and the rotation axis is perpendicular to the front-back direction. The L-shaped ends of the first linkage swing member 7081 and the second linkage swing member 7082 are both provided with a first strip-shaped groove 7083. The first linkage swing member 7081 and the second linkage swing member 7082 are hinged by the shaft rod arranged on the linkage sliding member 707 passing through the first strip-shaped groove 7083. The first claw portion 7091 and the second claw portion 7092 are slidably arranged on the third seat body 706 by means of a slide rod and a slide sleeve, and the sliding directions of the first claw portion 7091 and the second claw portion 7092 are perpendicular to the front-back direction. The first claw portion 7091 and the second claw portion 7092 are both provided with a mating groove 7093. The L-shaped other end of the first linkage swing member 555 extends into the mating groove 7093 of the first claw portion 7091, and the L-shaped other end of the second linkage swing member 555 extends into the mating groove 7093 of the second claw portion 7092. The second sliding cylinder 704 works to drive the first claw portion 7091 and the second claw portion 7092 to open and close.

[0114] Therefore, 1. The first jaw 73 and the second jaw 74 drive the second seat body 703 to move backward through the operation of the first sliding cylinder 702, so that the first jaw part 7091 and the second jaw part 7092 approach the key. Then, through the operation of the second sliding cylinder 704, the first jaw part 7091 and the second jaw part 7092 which are linked together are closed to clamp the key. After that, the operation of the first sliding cylinder 702 drives the second seat body 703 to move forward to drive the key to disengage from the loading rack 6 or the key fixture. Then, the transmission power structure 72 can work to drive the transmission sliding seat 71 to slide rightward to transfer the key to the next station. Finally, the operation of the first sliding cylinder 702 drives the second seat body 703 to move backward to drive the key to align with the key fixture at the next station. Then, through the operation of the second sliding cylinder 704, the first jaw part 7091 and the second jaw part 7092 which are linked together are separated to release the key, thus completing the transfer of the key. 2. For the key on the key fixture, the first jaw 73 and the second jaw 74 can also drive the second seat body 703 to move backward through the operation of the first sliding cylinder 702 to make the first jaw part 7091 and the second jaw part 7092 approach the key after one side of the key is processed. Then, through the operation of the second sliding cylinder 704, the first jaw part 7091 and the second jaw part 7092 which are linked together are closed to clamp the key. After that, the operation of the first sliding cylinder 702 drives the second seat body 703 to move forward to make the key and the key fixture stagger forward and backward. Then, through the operation of the rotary cylinder 705, the first jaw part 7091 and the second jaw part 7092 are flipped 180° to realize the turning over of the key. Finally, the operation of the first sliding cylinder 702 drives the second seat body 703 to move backward to drive the key to align with the key fixture again. Then, through the operation of the second sliding cylinder 704, the first jaw part 7091 and the second jaw part 7092 which are linked together are separated to release the key, thus completing the turning over of the key.

[0115] It should be noted that when the key back on both sides of the key is processed using the same set of key fixtures, the lower convex part formed by the combination of the first positioning convex part 21 and the third positioning convex part 41 on the key fixture needs to be centrosymmetrically arranged with the upper convex part formed by the combination of the second positioning convex part 31 and the fourth positioning convex part 42.

[0116] In addition, since the second jaw 74 does not need to turn over the key, the rotary cylinder 705 is not provided. The third seat body 706 is directly arranged on the second seat body 703, so that the linkage sliding part 707 can only move back and forth.

[0117] Among them, the deburring device 8 includes a third carrier 81, a deburring sliding seat 82, a deburring power structure 83, a turning frame 84, a deburring tool 85, and a turning cylinder 86. The third carrier 81 is fixedly arranged on the frame 10. The deburring sliding seat 82 is slidably arranged on the third carrier 81 in the front-rear direction. The deburring power structure 83 uses a combination of a motor and a lead screw nut to control the sliding of the deburring sliding seat 82. The turning frame 84 is turnably arranged on the deburring sliding seat 82. The turning cylinder 86 is used to drive the turning of the turning frame 84. The deburring tool 85 is arranged on the turning frame 84 so that the vertical height of the deburring tool 85 is controlled by the turning cylinder 86, and the front-rear sliding of the deburring sliding seat 82 is performed by the deburring power structure 83 to deburr the key back 912 that needs to be deburred.

[0118] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A key clamp, characterized in that: include: A first positioning member (2), the first positioning member (2) being fixedly arranged, and a first positioning protrusion (21) being arranged on the first positioning member (2); A second positioning member (3), wherein the second positioning member (3) is provided with a second action portion (34), and the second action portion (34) moves to approach or move away from the first positioning protrusion (21); A third positioning member (4), the third positioning member (4) being slidably disposed along a first direction relative to the first positioning member (2), and a third positioning protrusion (41) being disposed on the third positioning member (4); A linkage member (11), wherein the linkage member (11) is arranged in an inverted manner; an elastic member (12), wherein the elastic member (12) is respectively connected to the linkage member (11) and the third positioning member (4); and, A driving device (13), wherein the driving device (13) is used to drive the linkage member (11) to flip; The key to be clamped is inserted along the second direction and the key slot (911) is respectively matched with the first positioning protrusion (21) and the third positioning protrusion (41) to be pre-positioned. The driving device (13) drives the linkage member (11) to flip so that the third positioning member (4) is driven to slide under the action of the elastic member (12). The sliding third positioning member (4) drives the third positioning protrusion (41) to move and clamp the key in the first direction. The linkage member (11) continues to flip so as to drive the second action part (34) to move. The moving second action part (34) is close to the first positioning protrusion (21) to clamp and fix the key.

2. The key clamp according to claim 1, characterized in that: The second action portion (34) is provided with a second positioning protrusion (31); The third positioning member (4) is provided with a fourth positioning protrusion (42); The first positioning protrusion (21) and the third positioning protrusion (41) are arranged in a symmetrical manner, and the second positioning protrusion (31) and the fourth positioning protrusion (42) are arranged in a symmetrical manner; When the key is inserted, the third positioning protrusion (41) and the fourth positioning protrusion (42) are located on both sides of the thickness of the key.

3. The key clamp according to claim 2, characterized in that: The third positioning member (4) comprises a third clamping portion (43) and a fourth clamping portion (44), the third positioning protrusion (41) is arranged on the third clamping portion (43), and the fourth positioning protrusion (42) is arranged on the fourth clamping portion (44); The number of the first positioning members (2) is two, and the two first positioning members (2) are arranged in an alternating manner, and the two first positioning members (2) are located on both sides of the third clamping portion (43) along the second direction; The second action portion (34) is provided with two second clamping portions (341) arranged at intervals, and the two second clamping portions (341) are located on both sides of the fourth clamping portion (44) along the second direction.

4. The key clamp according to claim 1, characterized in that: The second positioning member (3) further comprises a second mounting portion (32) and a second deformable portion (33); the second deformable portion (33) connects the second action portion (34) and the second mounting portion (32); the second mounting portion (32) is fixedly arranged; and the second deformable portion (33) is deformed when the second action portion (34) moves to adapt to the movement of the second action portion (34).

5. The key clamp according to claim 1, characterized in that: The elastic member (12) is in sheet shape, and the elastic member (12) is arranged parallel to the second direction; and / or, The third positioning member (4) is provided with a first matching slot (45) for the elastic member (12) to be inserted into; and / or, The linkage member (11) is provided with a second matching slot (111) for the elastic member (12) to be inserted into.

6. The key clamp according to claim 1, characterized in that: It also comprises a first carrier (1), wherein the first positioning member (2), the second positioning member (3) and the third positioning member (4) are detachably arranged on the first carrier (1); and / or, The linkage member (11) is detachably provided with a mounting seat (112), and the elastic member (12) is detachably provided on the mounting seat (112); and / or, The driving device (13) adopts a cylinder.

7. A machine tool for processing key backs, characterized in that: include: Back milling device (5); The key clamp according to any one of claims 1 to 6; The back milling device (5) comprises: A second carrier (51); A swing frame (52), wherein the rotation axis of the swing frame (52) is the same as the second direction; A milling head (53), wherein the milling head (53) is rotatably disposed on the swing frame (52), and the rotation axis of the milling head (53) and the rotation axis of the swing frame (52) are non-collinear and are disposed parallel to each other; A reciprocating drive mechanism (55), the reciprocating drive mechanism (55) is used to drive the swing frame (52) to swing back and forth; The key to be processed is clamped and fixed by a key clamp, and then the swing frame (52) is reciprocated under the action of the reciprocating drive mechanism (55), so that the rotating milling head (53) passes through the key back (912) and processes the key back (912) into an arc.

8. The machine tool for processing key backs according to claim 7, characterized in that: The reciprocating drive mechanism (55) comprises a power motor (551), an eccentric output member (552), a linkage swing rod (553), a linkage sliding seat (554), and a linkage swing member (555); The power motor (551) is used to drive the eccentric output member (552) to rotate, the linkage sliding seat (554) is slidingly arranged along a first direction, the two ends of the linkage swing rod (553) are respectively hinged to the eccentric output member (552) and the linkage sliding seat (554), and the linkage swing rod (553) is non-collinear with the rotation axis of the eccentric output member (552) and the rotation axis of the output shaft of the power motor (551), and is arranged parallel to each other, the linkage swing member (555) is fixedly arranged on the swing frame (52), and the linkage sliding seat (554) is provided with a linkage slide rail (5541) that slides with the linkage swing member (555), and the track direction of the linkage slide rail (5541) is arranged vertically.

9. The machine tool for processing key backs according to claim 8, characterized in that: The eccentric output member (552) is provided with an amplitude adjustment slide rail (5521), the track direction of the amplitude adjustment slide rail (5521) is extended along the rotation radial direction of the output shaft of the power motor (551), a locking member (5522) is provided in the amplitude adjustment slide rail (5521), and the linkage rocker arm (553) is hinged to the locking member (5522).

10. The machine tool for processing key backs according to claim 7, characterized in that: It also includes a loading rack (6), a transmission structure (7), and a deburring device (8); The number of the key clamps is two groups, one group of key clamps is used to cooperate with the back milling device (5), and the other group of key clamps is used to cooperate with the deburring device (8); The loading rack (6) comprises a loading track (61) and an ejection structure (63), wherein the loading track (61) is extended vertically so that keys to be processed can be arranged in the loading track (61), and the ejection structure (63) is used to push out the keys at the bottom of the loading track (61); The transmission structure (7) comprises a transmission sliding seat (71), a transmission power structure (72), and a plurality of first clamps (73); the transmission power structure (72) is used to drive the transmission sliding seat (71) to slide back and forth along a first direction; the first clamps (73) are arranged on the transmission sliding seat (71) at intervals along the first direction; the transmission structure (7) is used to transmit the key on the loading rack (6) to the key clamp corresponding to the milling back device (5), and to transmit the key on the key clamp corresponding to the milling back device (5) to the key clamp corresponding to the deburring device (8).

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