Multi-piece precise clamping tool for lathe

Abstract

The utility model relates to a lathe multi-piece precise clamping tool which comprises a base used for being connected with a lathe. The placing grooves are formed in the base in a circumferential array mode, are matched with workpieces and are used for placing the workpieces to be machined; the connecting pin is arranged on the base, located between the containing groove and the circle center of the base and used for limiting a workpiece to be machined. And the locking assembly is detachably assembled on the base and used for pressing a workpiece to be machined into the containing groove, and workpiece locking is completed. According to the precise clamping tool, through the arrangement of the base, the containing groove formed in the base, the connecting pin arranged on the base and the circular truncated cone structure of the base, workpieces are allowed to be circumferentially arranged and machined in batches, the number of times of feeding and discharging is effectively reduced, only one turning tool needs to be used in the machining process, repeated tool changing like CNC does not need to be conducted, tool losses are reduced, and the machining efficiency is improved. And the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe tooling, in particular to a multi-piece precision clamping tooling for a lathe. Background Art

[0002] like Figure 1 As shown, for this kind of L-shaped latch workpiece, its shape is complex and has many features, including a notch 1 on its bottom surface, which requires adjusting the clamping direction for milling. It also includes two arc-shaped surfaces from top to bottom on its front end surface, the upper arc-shaped surface 2 is R13.5, and the lower arc-shaped surface 3 is R12.8, which is a descending step surface. Since the workpiece is assembled in the L-shaped positive direction, the three-axis machine tool needs to reassemble the product direction when processing the descending step surface, and assemble and reprocess the descending step surface upward, which has many loading and unloading times and low processing efficiency; or use a surrounding machine tool to process in place at one time, with few machines, difficult allocation, and difficult operation. According to the above CNC processing process, only 20 PCS can be processed per shift, the quality is unstable and the tool consumption is serious, which cannot meet the customer's delivery time. For this reason, it is necessary to develop a clamping tool for rapid processing of its descending step surface to solve the above problems. Utility Model Content

[0003] Based on this, the utility model provides a lathe multi-piece precision clamping tooling to solve the above problems.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A lathe multi-piece precision clamping tool, comprising:

[0006] A base, used to connect with a lathe;

[0007] Placement grooves, which are arranged in a circular array on the base and are configured to fit the workpiece and are used to place the workpiece to be processed;

[0008] A connecting pin, which is disposed on the base and located between the placement groove and the center of the base, and is used to limit the position of the workpiece to be processed; and

[0009] The locking assembly is detachably mounted on the base and is used to press the workpiece to be processed into the placement groove to complete the locking of the workpiece.

[0010] Furthermore, the base is a truncated cone structure.

[0011] Furthermore, arc portions are provided at the corners of the placement groove to avoid air.

[0012] Furthermore, the locking assembly includes a first locking bolt head; the first locking bolt penetrates from the outer periphery of the base along the radial direction of the base into the placement groove and connects with the workpiece.

[0013] Furthermore, a first positioning through hole is provided on the base; the first positioning through hole penetrates from the outer circumference of the base to the placement groove along the radial direction of the base, so as to allow the first locking bolt head to be threadedly connected.

[0014] Furthermore, the locking assembly includes a clamping ring; the clamping ring is concentrically aligned with the base and detachably connected to the base, and is used to correspondingly clamp the workpieces on all the placement slots.

[0015] Furthermore, the clamping ring is detachably connected to the base via a second locking bolt head; and at least two second positioning through holes are correspondingly provided on the clamping ring and the base for threaded connection of the second locking bolt head.

[0016] The beneficial effects of the utility model are:

[0017] Batch processing, high production efficiency: This precision clamping tool is equipped with a base, a placement groove arranged on the base, and a connecting pin arranged on the base. The base cone structure allows the workpieces to be arranged in a circle for batch processing, which effectively reduces the number of loading and unloading times. Only one turning tool is needed during processing, and there is no need to repeatedly change tools like in the past CNC, which reduces tool loss and improves processing efficiency. The production capacity is increased from 20PCS per shift to 40PCS per shift.

[0018] Accurate positioning: Through the multiple locking and positioning of the placement slots and connecting pins, the workpiece is ensured to maintain accurate positioning during processing, thereby improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the workpiece required to be produced in the background technology;

[0020] Figure 2 It is a schematic diagram of the overall structure of Example 1;

[0021] Figure 3 is a schematic cross-sectional structural diagram of Example 1;

[0022] Figure 4 This is a schematic diagram of the explosion structure of Example 1;

[0023] Figure 5 It is a schematic diagram of the overall structure of Example 2;

[0024] Figure 6 It is a cross-sectional structural schematic diagram of Example 2;

[0025] Figure 7 This is a schematic diagram of the explosion structure of Example 2.

[0026] 1. Notch; 2. Upper arc surface; 3. Lower arc surface; 4. Through hole;

[0027] 10. Base; 20. Placement groove; 21. Air-avoiding arc portion; 30. Connecting pin; 40. Locking assembly; 41. First locking bolt head; 42. First positioning through hole; 43. Pressing ring; 44. Second locking bolt head; 45. Second positioning through hole. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] Embodiment 1:

[0032] like Figure 1-Figure 4 As shown, a lathe multi-piece precision clamping tool comprises a base 10, a placement slot 20 arranged on the base 10, and a connecting pin 30 arranged on the base 10;

[0033] See also Figure 1 The two arc-shaped surfaces on the workpiece are both symmetrical structures along the center of the workpiece, that is, the center direction is located in the direction of the extension line of the center line of the workpiece. Therefore, the workpiece can be arranged in a circle on the lathe for batch processing;

[0034] The base 10 is used to connect with the lathe; in this embodiment, the base 10 is a truncated cone structure; the truncated cone structure can provide a more uniform clamping force distribution, and the force on the fixture surface can be more evenly transmitted to the workpiece, avoiding deformation or uneven deformation caused by uneven clamping; the truncated cone structure makes the adjustment of the fixture more flexible, and it is easier to arrange the workpiece in a circular arrangement to achieve circular arrangement processing;

[0035] The placement grooves 20 are arranged in a circular array on the base 10, and are arranged in a manner to fit the workpieces, and are used to place the workpieces to be processed, so as to adapt to the circular arrangement processing; in this embodiment, the corners of the placement grooves 20 are provided with air-avoiding arc portions 21, and the design of the air-avoiding arc portions 21 can reduce the stress concentration when the sharp corners of the workpiece contact the fixture, and reduce the deformation and damage that may be caused during the processing;

[0036] The connecting pin 30 is disposed on the base 10 and is located between the placement groove 20 and the center of the base 10, and is used to limit the position of the workpiece to be processed; please continue to refer to Figure 1 The bottom surface of the workpiece has a notch 1, and the notch has a through hole 4, and the arc surface to be processed is located on the extension of the through hole 4. For this structure, the tooling is provided with a connecting pin 30, which can be inserted into the through hole for fixing. On the one hand, due to the size and processing position, the placement slot 20 fails to bear the notch position, and the connecting pin 30 can provide a positioning effect to avoid the workpiece from being skewed during installation, ensure correct installation, and align the workpiece in combination with the placement slot 20 in a limited space; on the other hand, it can effectively reduce the vibration and deformation caused by the required processing surface position during the processing process, ensure that the workpiece maintains its original shape during the processing, reduce processing errors and improve processing quality;

[0037] The locking assembly 40 can be detachably assembled on the base 10, and is used to press the workpiece to be processed into the placement groove 20 to complete the workpiece locking; in this embodiment, the locking assembly 40 includes a first locking bolt head 41; the first locking bolt penetrates from the outer periphery of the base 10 along the radial direction of the base 10 to the placement groove 20 to connect with the workpiece; specifically, a first positioning through hole 42 is provided on the base 10; the first positioning through hole 42 penetrates from the outer periphery of the base 10 along the radial direction of the base 10 to the placement groove 20, so as to provide the first locking bolt head 41 for threaded connection; after the workpiece is placed in the placement groove 20, the workpiece can be locked in the placement groove 20 by screwing the first locking bolt head 41 into the corresponding hole position to complete the locking.

[0038] The above-mentioned precision clamping tooling is provided with a base 10, a placement groove 20 arranged on the base 10, and a connecting pin 30 arranged on the base 10. The frustum structure of the base 10 allows the workpieces to be arranged in a circle for batch processing, which effectively reduces the number of loading and unloading, improves the processing efficiency, reduces the production cost, and increases the production capacity from 20 PCS per shift to 40 PCS per shift; and through the multiple locking and positioning methods of the placement groove 20 and the connecting pin 30, it is ensured that the workpiece remains accurately positioned during processing, thereby improving the processing accuracy. Only one turning tool is needed during processing, and there is no need to repeatedly change the tool like the previous CNC, thereby reducing tool wear.

[0039] Embodiment 2:

[0040] like Figure 5-Figure 7 As shown, this embodiment is substantially the same as Embodiment 1, except that the locking assembly 40 includes a clamping ring 43; the clamping ring 43 is concentrically aligned with the base 10 and is detachably connected to the base 10, so as to clamp all the workpieces on the placement grooves 20 accordingly; specifically, the clamping ring 43 is detachably connected to the base 10 via a second locking bolt head 44; at least two second positioning through holes 45 are correspondingly provided on the clamping ring 43 and the base 10 for threaded connection of the second locking bolt head 44; by providing the clamping ring 43, this embodiment can realize batch rapid locking of all workpieces on the tooling in the axial direction, thereby improving the clamping efficiency.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A lathe multi-piece precision clamping tool, characterized in that: include: A base, used to connect with a lathe; Placement grooves, which are arranged in a circular array on the base and are configured to fit the workpiece and are used to place the workpiece to be processed; A connecting pin, which is disposed on the base and located between the placement groove and the center of the base, and is used to limit the position of the workpiece to be processed; and The locking assembly is detachably mounted on the base and is used to press the workpiece to be processed into the placement groove to complete the locking of the workpiece.

2. The multi-piece precision clamping fixture for a lathe according to claim 1, characterized in that: The base is a truncated cone structure.

3. The multi-piece precision clamping fixture for lathe according to claim 1, characterized in that: The corners of the placement groove are provided with arc portions for avoiding air.

4. The multi-piece precision clamping fixture for a lathe according to claim 1, characterized in that: The locking assembly includes a first locking bolt head; the first locking bolt penetrates from the outer periphery of the base along the radial direction of the base into the placement groove and connects with the workpiece.

5. The multi-piece precision clamping fixture for lathe according to claim 4, characterized in that: The base is provided with a first positioning through hole; the first positioning through hole penetrates from the outer circumference of the base to the placement groove along the radial direction of the base, so as to allow the first locking bolt head to be threadedly connected.

6. The multi-piece precision clamping fixture for lathe according to claim 1, characterized in that: The locking assembly includes a clamping ring; the clamping ring is concentrically aligned with the base and is detachably connected to the base, and is used to correspondingly clamp the workpieces on all the placement grooves.

7. The multi-piece precision clamping fixture for a lathe according to claim 6, characterized in that: The clamping ring is detachably connected to the base via a second locking bolt head; at least two second positioning through holes are correspondingly provided on the clamping ring and the base for threaded connection of the second locking bolt head.

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