Lathe clamping alignment tool

Abstract

The lathe clamping alignment tool comprises supporting rods, a bearing and a locking positioning mechanism, the supporting rods comprise the front supporting rod and the rear supporting rod, the bottom of the rear supporting rod is installed on a lathe tool rest, and the bottom end of the front supporting rod is rotationally connected with the top end of the rear supporting rod; the front supporting rod can rotate between a first position and a second position relative to the rear supporting rod, the first position is perpendicular to the second position, the locking and positioning mechanism can lock and fix the front supporting rod located at the first position and the second position respectively, the top end of the front supporting rod is fixedly sleeved with the bearing inner ring, and when the front supporting rod is located at the first position, the bearing inner ring is fixed to the bearing inner ring. When the front supporting rod is located at the first position, the outer wall of the bearing outer ring can be attached to the first face of the workpiece clamped on the lathe, when the front supporting rod is located at the second position, the outer wall of the bearing outer ring can be attached to the second face of the workpiece clamped on the lathe, and different turning faces of the workpiece can be aligned by adjusting the position of the front supporting rod of the lathe clamping alignment tool.

Description

Technical Field

[0001] The invention relates to the technical field of lathe processing, in particular to a lathe clamping and alignment tool. Background Art

[0002] The lathe can perform turning processing on the end face and outer cylindrical surface of the workpiece, and is used to make shaft and disc parts. Before processing, in order to ensure the processing accuracy, the workpiece must be accurately clamped on the chuck of the machine tool, that is, when processing the outer cylindrical surface of the workpiece, it is necessary to ensure that the axis of the workpiece coincides with the axis of the lathe spindle, and when processing the end face of the workpiece, it is necessary to ensure that the end face of the workpiece is perpendicular to the axis of the lathe spindle. For workpieces that need to process both the outer cylindrical surface and the end face, the above two position requirements must be met.

[0003] In the prior art, when machining the outer cylindrical surface of a workpiece, a chuck is often used to pre-clamp the workpiece, and then the lathe spindle is slowly rotated, the part rotates with the spindle, the swing trajectory of the workpiece is observed during the rotation, and the clamping position of the workpiece is adjusted by tapping the part multiple times. This method is time-consuming and labor-intensive, and has low production efficiency. There is also a method of correcting the clamping position of the workpiece by contacting the alignment bearing with the workpiece surface, but the alignment bearing is generally installed on a support rod clamped on the tool holder. When facing different machining positions and correction requirements of the workpiece, the support rod needs to be loaded and unloaded multiple times, which still has the problem of being time-consuming and labor-intensive. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention proposes a lathe clamping and alignment tool.

[0005] The lathe clamping and alignment tooling includes: a support rod, a bearing, and a locking and positioning mechanism, the support rod includes a front support rod and a rear support rod, the bottom of the rear support rod is installed on the lathe tool holder, the bottom end of the front support rod is rotatably connected to the top end of the rear support rod, the front support rod can be rotated between a first position and a second position relative to the rear support rod, the first position is perpendicular to the second position, and the locking and positioning mechanism can respectively lock and fix the front support rod at the first position and the second position, the bearing inner ring is fixedly sleeved on the top end of the front support rod, when the front support rod is in the first position, the outer wall of the bearing outer ring can be abutted against the first surface of the workpiece clamped on the lathe, the first surface is the end surface of the workpiece away from the lathe chuck, and when the front support rod is in the second position, the outer wall of the bearing outer ring can be abutted against the second surface of the workpiece clamped on the lathe, and the second surface is the outer cylindrical surface of the workpiece.

[0006] Preferably, the locking and positioning mechanism includes: a first plate body and a first locking member. The bottom of the first plate body is connected and fixed to the rear support rod. The top wall of the first plate body can be abutted against the wall of the front support rod located at the first position. A first through hole and a second through hole that penetrate the first plate body and the front support rod are respectively opened at the abutment point between the first plate body and the front support rod. The first locking member passes through the first through hole and the second through hole to lock and fix the first plate body and the front support rod.

[0007] Preferably, the first locking member is a steel ball spring quick release pin, the pin body of the quick release pin is adapted to the first through hole and the second through hole and passes through the first through hole and the second through hole, when the quick release pin head button is released, the steel ball located at the bottom of the quick release pin pin body will pop out of the pin body and abut against the surface wall of the front support rod, and the steel ball and the quick release pin head will lock the front support rod and the first plate body located therebetween.

[0008] Preferably, the locking and positioning mechanism also includes: a second plate body and a second locking piece. The bottom of the second plate body is connected and fixed to the rear support rod. The top plate wall of the second plate body can be abutted against the outer wall of the front support rod located at the second position. A third through hole and a fourth through hole that penetrate the second plate body and the front support rod are respectively opened at the abutment point between the second plate body and the front support rod. The locking piece passes through the third through hole and the fourth through hole to lock and fix the second plate body and the front support rod.

[0009] Preferably, the second through hole and the fourth through hole are the same through hole.

[0010] Preferably, both end surfaces of the bearing inner ring are provided with fastening mechanisms capable of limiting its displacement in the axial direction.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] Since the front support rod can be switched between a first position and a second position which are perpendicular to each other, the tooling can be used to clamp and correct only the end face or the outer cylindrical surface of the workpiece, or the end face and the outer cylindrical surface of the workpiece can be corrected alternately. Through the adjustment conditions at the two positions, the optimal correction position of the workpiece can be comprehensively judged, thereby increasing the flexibility of the use of the clamping and correction tooling.

[0013] A steel ball spring quick release pin is used as a locking piece for locking and releasing the front support rod at the first position and the second position, thereby improving the convenience of using the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the three-dimensional structure of the tooling for lathe clamping.

[0015] Figure 2 for Figure 1 Schematic diagram of the enlarged structure in part A.

[0016] Figure 3This is a three-dimensional structural diagram of the lathe clamping and alignment tooling from another perspective.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the lathe clamping and alignment tooling, the lathe chuck, and the workpiece when the front support rod is located at the first position.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the lathe clamping and alignment tool, lathe chuck, and workpiece when the front support rod is located at the second position. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figures 1 to 5 , a lathe clamping and alignment tooling comprises: a support rod 1, a bearing 2, and a locking and positioning mechanism 3. The support rod 1 comprises a front support rod 11 and a rear support rod 12. The bottom of the rear support rod 12 is installed on the lathe tool holder. The bottom end of the front support rod 11 is rotatably connected to the top end of the rear support rod 12. In this embodiment, a hinge is adopted. The front support rod 11 can rotate between a first position and a second position relative to the rear support rod 12. The first position is perpendicular to the second position. The locking and positioning mechanism 3 can respectively lock and fix the front support rod 11 located at the first position and the second position. The inner ring of the bearing 2 is fixedly sleeved on the top end of the front support rod 11. When the front support rod 11 is located at the first position, the outer wall of the outer ring of the bearing 2 can be abutted against the first surface 41 of the workpiece 4 clamped on the lathe. The first surface 41 is the end surface of the workpiece 4 away from the lathe chuck. When the front support rod 11 is located at the second position, the outer wall of the outer ring of the bearing 2 can be abutted against the second surface 42 of the workpiece 4 clamped on the lathe. The second surface 42 is the outer cylindrical surface of the workpiece 4.

[0021] Reference Figure 4 When the end face of the workpiece 4 needs to be clamped and corrected, the workpiece 4 can be pre-clamped on the machine tool chuck first, and then the bottom of the rear support rod 12 of the lathe clamping tool is installed on the tool holder. At this time, the front support rod 11 is in position one. In this embodiment, position one is the position where the front support rod 11 and the rear support rod 12 are parallel in the length direction. Move the tool holder until the outer ring of the bearing 2 is against the end face of the workpiece. At this time, slowly rotate the lathe spindle, and the workpiece 4 will rotate with the lathe spindle. At the same time, because of the squeezing pressure of the bearing 2 on the end face of the workpiece, that is, the first face 41, until the workpiece 4 has no axial movement, the workpiece 4 is gradually moved to the correct clamping position, and then the chuck is adjusted to clamp the workpiece to complete the alignment.

[0022] Reference Figure 5When it is necessary to clamp and correct the outer cylindrical surface of the workpiece 4, that is, the second surface 42, the process is basically the same as the clamping and correction of the end surface of the workpiece 4. It is only necessary to rotate the front support rod 11 from position one to position two. In this embodiment, position two is the position where the front support rod 11 and the rear support rod 12 are perpendicular in the length direction. Move the tool holder until the outer ring of the bearing 2 is in contact with the outer cylindrical surface of the workpiece 4. At this time, slowly rotate the lathe spindle, and the workpiece 4 will rotate with the lathe spindle. At the same time, because of the squeezing pressure of the bearing 2 on the outer cylindrical surface of the workpiece 4, that is, the second surface 42, until the workpiece 4 has no radial runout, the workpiece 4 is gradually moved to the correct clamping position, and then the chuck is adjusted to clamp the workpiece to complete the alignment.

[0023] In practical applications, only the end face or outer cylindrical surface of the workpiece 4 may be clamped and corrected, or the end face and outer cylindrical surface of the workpiece 4 may be corrected alternately, and the optimal correction position of the workpiece 4 may be comprehensively determined through the adjustment conditions at the two positions.

[0024] The locking and positioning mechanism 3 includes: a first plate body 31 and a first locking piece 32. The bottom of the first plate body 31 is connected and fixed to the rear support rod 12, and the top wall of the first plate body 31 can be abutted against the wall of the front support rod 11 located at the first position. A first through hole 311 and a second through hole 111 that penetrate the first plate body 31 and the front support rod 11 are respectively provided at the abutting position of the first plate body 31 and the front support rod 11. The first locking piece 32 passes through the first through hole 311 and the second through hole 111 to lock and fix the first plate body 31 and the front support rod 11. The first plate body 31 can cooperate with the locking piece 32 to lock the front support rod 11, and can also play a limiting role to ensure that the front support rod 11 is reliably positioned at the first position.

[0025] Reference Figure 1 , Figure 2 The first locking member 32 is a steel ball spring quick release pin, the pin body of the quick release pin is adapted to the first through hole 311 and the second through hole 111 and passes through the first through hole 311 and the second through hole 111. When the quick release pin head button 321 is released, the steel ball 322 located at the bottom of the quick release pin pin body will pop out of the pin body and abut against the surface wall of the front support rod 11. The steel ball and the quick release pin head will lock and fix the front support rod 11 and the first plate body 31 located therebetween. When the position of the front support rod 11 needs to be changed, the button 321 can be pressed, and the steel ball 322 will retract the pin body of the quick release pin. At this time, the quick release pin can be pulled out of the first through hole 311 and the second through hole 111 to release the front support rod 11. The steel ball spring quick release pin can realize quick locking and release of the front support rod 11, thereby improving the convenience of using the tooling.

[0026] The locking and positioning mechanism 3 also includes: a second plate body 33 and a second locking piece 34. The bottom of the second plate body 33 is connected and fixed to the rear support rod 12, and the top plate wall of the second plate body 33 can be abutted against the outer wall of the front support rod 11 located at the second position. A third through hole 331 and a fourth through hole 112 that penetrate the second plate body 33 and the front support rod 11 are respectively provided at the abutment point between the second plate body 33 and the front support rod 11. The locking piece 32 passes through the third through hole 331 and the fourth through hole 112 to lock and fix the second plate body 33 and the front support rod 11, thereby further improving the convenience of use of the tooling.

[0027] In order to ensure the compactness of the structure of the tooling and to minimize the processing amount of parts, the second through hole 111 and the fourth through hole 112 are the same through hole.

[0028] In order to ensure that the bearing 2 is reliably mounted on the front support rod 11 and to ensure the reliability and safety of the tooling, the two end surfaces of the inner ring of the bearing 2 are provided with a fastening mechanism 5 which can limit its displacement in the axial direction, as shown in FIG. Figure 1 , Figure 3 In this embodiment, a limiting boss 51 is provided on the front support rod 11 and abuts against the inner end surface of the inner ring of the bearing 2, and a bearing retaining ring 52 is sleeved in a groove on the front support rod 11 and abuts against the outer end surface of the inner ring of the bearing 2.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lathe clamping and alignment tool, characterized in that: The invention comprises: a support rod (1), a bearing (2), and a locking and positioning mechanism (3); the support rod (1) comprises a front support rod (11) and a rear support rod (12); the bottom of the rear support rod (12) is mounted on a lathe tool holder; the bottom end of the front support rod (11) is rotatably connected to the top end of the rear support rod (12); the front support rod (11) can rotate relative to the rear support rod (12) between a first position and a second position; the first position is perpendicular to the second position; the locking and positioning mechanism (3) can respectively lock and fix the front support rods at the first position and the second position. The support rod (11) and the inner ring of the bearing (2) are fixedly mounted on the top end of the front support rod (11). When the front support rod (11) is located at a first position, the outer wall of the outer ring of the bearing (2) can be abutted against a first surface (41) of a workpiece (4) clamped on a lathe, and the first surface (41) is the end surface of the workpiece (4) away from the lathe chuck. When the front support rod (11) is located at a second position, the outer wall of the outer ring of the bearing (2) can be abutted against a second surface (42) of the workpiece (4) clamped on the lathe, and the second surface (42) is the outer cylindrical surface of the workpiece (4).

2. The lathe clamping and alignment tool according to claim 1 is characterized in that: The locking and positioning mechanism (3) comprises: a first plate body (31) and a first locking member (32); the bottom of the first plate body (31) is connected and fixed to the rear support rod (12); the top plate wall of the first plate body (31) can be abutted against the plate wall of the front support rod (11) located at the first position; a first through hole (311) and a second through hole (111) penetrating the first plate body (31) and the front support rod (11) are respectively provided at the abutting position of the first plate body (31) and the front support rod (11); the first locking member (32) passes through the first through hole (311) and the second through hole (111) to lock and fix the first plate body (31) and the front support rod (11).

3. The lathe clamping and alignment tool according to claim 2 is characterized in that: The first locking member (32) is a steel ball spring quick release pin, the pin body of the quick release pin is adapted to the first through hole (311) and the second through hole (111) and passes through the first through hole (311) and the second through hole (111), when the quick release pin head button (321) is released, the steel ball (322) located at the bottom of the quick release pin pin body will pop out of the pin body and abut against the surface wall of the front support rod (11), and the steel ball (322) and the quick release pin head will lock and fix the front support rod (11) and the first plate body (31) located therebetween.

4. The lathe clamping and alignment tool according to claim 2 is characterized in that: The locking and positioning mechanism (3) also includes: a second plate body (33) and a second locking member. The bottom of the second plate body (33) is connected and fixed to the rear support rod (12). The top plate wall of the second plate body (33) can be abutted against the outer wall of the front support rod (11) located at the second position. A third through hole (331) and a fourth through hole (112) penetrating the second plate body (33) and the front support rod (11) are respectively provided at the abutment point between the second plate body (33) and the front support rod (11). The locking member (32) passes through the third through hole (331) and the fourth through hole (112) to lock and fix the second plate body (33) and the front support rod (11).

5. The lathe clamping and alignment tool according to claim 4 is characterized in that: The second through hole (111) and the fourth through hole (112) are the same through hole.

6. The lathe clamping and alignment tool according to claim 1 is characterized in that: Both end surfaces of the inner ring of the bearing (2) are provided with fastening mechanisms (5) capable of limiting its displacement in the axial direction.

Images