Positioning and clamping device for slot machining of numerical control slotting machine

Abstract

The utility model relates to a positioning and clamping device for slot processing of a numerical control slotting machine, which comprises a base, a large T-shaped block, a small T-shaped block, a support rod, a pressing plate, a screw, a gasket and a core shaft, and through the fixing modes that a threaded hole on the base is matched with the support rod, an unthreaded hole on the base is matched with the core shaft, the large T-shaped block is matched with the small T-shaped block and the like, the positioning and clamping device is fixed. The positioning and clamping requirements of shells of different shapes and different sizes can be met, the shell machining time is greatly shortened, the product machining efficiency is improved, and the product machining period is shortened.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical structures, and in particular relates to a positioning and clamping device for machining slots of a numerically controlled slotting machine. Background Art

[0002] Electromechanical actuators are the main development trend of actuators in the future, and actuator housings are of many types and in large quantities. As competition in the actuator market intensifies, development cycles are becoming shorter and shorter. In order to meet delivery schedules and quality requirements, it is necessary to address the many bottlenecks that restrict the rapid and large-scale delivery of actuator housings, including the low efficiency and poor quality of actuator housing guide groove processing. Actuator housing guide grooves are often processed using CNC milling machines, and special inserts and mandrel tooling are customized. The processing time for a single housing guide groove is approximately 40 minutes, which is time-consuming. The bottom surface of the machined housing groove has knife marks and poor roughness. The dimensional consistency from the hole center to the bottom surface of the groove is poor, and each piece needs to be aligned during processing, which is time-consuming and labor-intensive.

[0003] A patent for a positioning fixture for CNC machine tools (patent number: CN218984026U) can clamp shells of different sizes and shapes, but it cannot accurately position the shell in the Y direction. It requires the use of other auxiliary parts for positioning. The positioning reference uses the outer surface, while the symmetry reference of the shell guide groove is the hole, which is prone to deviation. A positioning fixture for CNC machine tools (patent number: CN207824464U) also uses the outer surface as the positioning reference, and the clamping force is applied in the X direction. Because the shell has a hole system in the middle and is hollow as a whole, the slotting machine is a dedicated slotting machine tool and has a large cutting depth during slotting. If the clamping force of the fixture is too low, it may cause slight movement in the X and Y directions during slotting, thereby affecting the processing accuracy. If the clamping force of the fixture is too high, it may cause the shell to deform during clamping, thereby affecting the processing accuracy. Utility Model Content

[0004] The purpose of the present utility model is to overcome the above-mentioned defects of the prior art and provide a positioning and clamping device for slot processing of CNC slotting machines, so as to solve the guide groove slotting problem that restricts the rapid delivery of actuator housings in large quantities, significantly shorten the processing time of the housings, improve production efficiency, improve surface quality and dimensional consistency, and reduce the labor intensity of workers.

[0005] The above-mentioned purpose of the present invention is mainly achieved through the following technical solutions:

[0006] A positioning and clamping device for slot processing on a CNC slotting machine comprises a base, a large T-shaped block, a small T-shaped block, a support rod, a pressure plate and a first screw. The outer side surface of the cross beam at one end of the small T-shaped block is tightly attached to a shell to be clamped, and the vertical beam at the other end passes through the large T-shaped block and is connected to the large T-shaped block. The outer side surface of the cross beam of the large T-shaped block is installed on a slotting machine workbench. The pressure plate is used to fix the shell to be clamped on the base. One end of the support rod supports the pressure plate, and the other end is connected to the base. The first screw passes through a through hole on the pressure plate and is threadedly connected to the base for fastening.

[0007] The large T-shaped block includes a square through hole, and the small T-shaped block passes through the square through hole and cooperates with the large T-shaped block. The small T-shaped block can be telescopically adjusted in a direction perpendicular to the connection.

[0008] It also includes a nut, and one end of the small T-shaped block connected to the large T-shaped block is a screw, which is locked by the nut.

[0009] The small T-shaped block can be adjusted in the range of 0-40 mm in the direction perpendicular to the connection.

[0010] It also includes a core shaft, which is composed of two coaxial cylinders with different diameters. The cylinder with a smaller diameter is in clearance with the light hole on the base, and the cylinder with a larger diameter is in size with the main hole of the shell to be clamped.

[0011] The size of the light hole on the small end of the core shaft and the base is Φ30.

[0012] One end of the support rod is threaded and the other end is a light column. The threaded end is matched with the threaded hole on the base, and the light column supports the pressure plate.

[0013] The support rod extension height can be adjusted from 0 to 15 mm.

[0014] When the shell to be clamped is L-shaped, the clamping device also includes a gasket and a second screw. The L-shaped shell to be clamped includes a bottom beam and a vertical beam perpendicular to each other. The bottom beam is fixed on the base. The gasket is arranged on the upper surface of the bottom beam of the shell to be clamped. The second screw passes through the gasket and the through hole on the shell to be clamped and cooperates with the threaded hole on the base.

[0015] N groups of pressing plates, first screws and support rods are respectively provided for pressing, where N is a positive integer.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention significantly shortens the shell processing time by designing a positioning and clamping device for the slotting machine through the CNC slotting machine, thereby improving product processing efficiency and shortening the product processing cycle;

[0018] (2) The present invention can meet the needs of positioning and clamping shells of different shapes and sizes by matching the threaded holes on the base with the support rods, and the light holes on the base with the core shafts;

[0019] (3) The base, core shaft and support rod of the utility model have certain versatility, saving tooling costs;

[0020] (4) The large T-shaped block and the small T-shaped block of the utility model adopt a square fit, which fully limits the freedom of the small T-shaped block. The large end face of the small T-shaped block contacts the outer shape of the shell, the positioning contact surface is larger, and the positioning is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram of the clamping structure of the L-shaped shell in Example 1 of the present utility model;

[0022] Figure 2 This is a structural diagram of a large T-shaped block in Example 1 of the utility model;

[0023] Figure 3 This is a structural diagram of a small T-shaped block in Example 1 of the utility model;

[0024] Figure 4 This is a diagram of the core shaft structure of Example 1 of the utility model;

[0025] Figure 5 This is a base structure diagram of Example 1 of the utility model;

[0026] Figure 6 This is a structural diagram of the support rod of Example 1 of the present utility model. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments:

[0028] Example 1

[0029] Figure 1 This is a diagram of the L-shaped shell clamping structure. The utility model is a positioning clamping device for CNC slotting machine slot processing, including a base 1, a large T-shaped block 2, a small T-shaped block 3, a support rod 4, a pressure plate 5, a first screw 6, a gasket 7, a second screw 8, a nut 9 and a core shaft 10.

[0030] Figure 2 The diagram shows the structure of the large T-shaped block 2. Figure 3 The diagram shows the structure of the small T-shaped block 3. The large T-shaped block 2 and the small T-shaped block 3 are matched through the square through hole 201 on the large T-shaped block 2, which limits the five degrees of freedom of the small T-shaped block. The small T-shaped block can only extend and retract in one direction. The contact part of the small T-shaped block with the housing 100 to be clamped is the long end face, which ensures a larger positioning contact surface. The other end of the small T-shaped block is a screw, which is convenient for locking after positioning by tightening the nut. The small T-shaped block can be adjusted in the range of 0-40mm. If the square part of the small T-shaped block extends out of the square hole, add a gasket and tighten the nut to lock it.

[0031] Figure 4 The structure diagram of the core shaft 10 is shown. The size of the small end of the core shaft 10 is fixed at Φ30, and the size of the light hole on the base 1 is fixed at Φ30. They are matched with a small gap. The large end of the core shaft 10 is made according to the main hole of the shell 100 to be clamped, which is convenient for positioning the shell 100 to be clamped with reference holes of different sizes.

[0032] Figure 5 The structure diagram of the base 1 is shown. Figure 6 The figure shows the structure of the support rod 4. One end of the support rod 4 is a thread M12, and the other end is a light column (diameter ≦Φ25). The thread is used to cooperate with the threaded hole on the base 1, and the light column is used to support the pressure plate 5. The support rod 4 can be screwed into the threaded hole on the base 1 according to the clamping position of the shell 100 to be clamped. The extension height of the support rod 4 can be adjusted according to the clamping height, and the adjustable range is 0-15mm. The multiple threaded holes on the base 1 can meet the clamping needs of shells of different sizes.

[0033] The base 1 is the main body that supports the fixture and parts. The support rod 4 is screwed into the threaded hole on the base 1 according to the clamping position of the housing 100 to be clamped. One end of the pressure plate 5 presses the window of the housing 100 to be clamped, and the other end presses on the end face of the support rod 4. The Φ30 through hole on the base 1 is used to cooperate with the small end of the core shaft 10. The large T-shaped block 2 is installed on the slotting machine workbench in an inverted T shape. The large end face of the small T-shaped block 3 passes through the square through hole 201 in the middle of the large T-shaped block 2 with its end facing inward. The housing 100 to be clamped is an "L"-shaped housing. The first screw 6 passes through the through hole in the middle of the pressure plate 5 and is screwed into the threaded hole on the base 1. The gasket presses the long end of the "L"-shaped housing. The second screw 8 passes through the gasket 7 and the through hole on the housing 100 to be clamped and is screwed into the threaded hole on the base 1. If the housing is a square housing, two groups of pressure plates 5, first screws 6, and support rods 4 are symmetrically arranged on both sides for compression.

[0034] Device implementation method:

[0035] Align the base 1 and the large T-shaped block 2 and fix them to the machine tool workbench. The large end face of the small T-shaped block 3 faces inward and the small end passes through the square through hole 201 on the large T-shaped block 2. The small end of the core shaft 10 is inserted into the light hole on the base 1. The reference hole of the shell 100 to be clamped is matched with the core shaft 10, and one end face is against the upper end face of the base 1. Push the small T-shaped block 2 to slide along the square through hole 201, and the large end face is close to the outer end face of the shell 100 to be clamped. Tighten the nut 9 at the tail end of the small T-shaped block 3 and lock the small T-shaped block 3. According to the outer shape of the shell 100 to be clamped and the base 1, adjust the position of the support rod 4 through the threaded hole on the upper part of the support rod 4, adjust the height of the support rod 4 according to the pressing height of the housing 100 to be clamped, press one end of the pressure plate 5 onto the upper end surface of the support rod 4, and press the other end into the through holes around the housing 100 to be clamped. Tighten the first screw 6 to achieve the clamping of the housing 100 to be clamped; select the clamping method of the other end according to the shape of the housing 100 to be clamped. If the housing is an "L"-shaped housing, a gasket 7 can be added. The second screw 8 directly passes through the through holes on the housing 100 to be clamped and the gasket 7 and is screwed into the threaded hole on the base 1 to achieve compression.

[0036] The technology not disclosed in the present invention belongs to the common knowledge of those skilled in the art. The content not described in detail in the utility model specification belongs to the common knowledge of those skilled in the art.

Claims

1. A positioning and clamping device for slot processing on a CNC slotting machine, characterized in that: The utility model comprises a base (1), a large T-shaped block (2), a small T-shaped block (3), a support rod (4), a pressure plate (5) and a first screw (6); the outer side surface of the cross beam at one end of the small T-shaped block (3) is in close contact with the housing (100) to be clamped, and the vertical beam at the other end passes through the large T-shaped block (2) and is connected to the large T-shaped block (2); the outer side surface of the cross beam of the large T-shaped block (2) is installed on the slotting machine workbench; the pressure plate (5) is used to fix the housing (100) to be clamped on the base (1); one end of the support rod (4) supports the pressure plate (5) and the other end is connected to the base (1); the first screw (6) passes through the through hole on the pressure plate (5) and is threadedly connected to the base (1) for fastening.

2. A positioning and clamping device for slot processing on a CNC slotting machine according to claim 1, characterized in that: The large T-shaped block (2) includes a square through hole (201), and the small T-shaped block (3) passes through the square through hole (201) to cooperate with the large T-shaped block (2). The small T-shaped block (3) can be telescopically adjusted in a direction perpendicular to the connection.

3. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 2, characterized in that: It also includes a nut (9), and one end of the small T-shaped block (3) connected to the large T-shaped block (2) is a screw, which is locked by the nut (9).

4. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 2, characterized in that: The small T-shaped block (3) can be adjusted in a range of 0-40 mm in a direction perpendicular to the connection.

5. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 1, characterized in that: It also includes a core shaft (10), which is composed of two coaxial cylinders with different diameters connected together, wherein the cylinder with a smaller diameter is in clearance with the light hole on the base (1), and the cylinder with a larger diameter is in size with the main hole of the housing (100) to be clamped.

6. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 5, characterized in that: The sizes of the light holes on the small end of the core shaft (10) and the base (1) are both Φ30.

7. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 1, characterized in that: One end of the support rod (4) is threaded, and the other end is a light column. The threaded end is matched with the threaded hole on the base (1), and the light column supports the pressure plate (5).

8. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 7, characterized in that: The height of the support rod (4) can be adjusted in the range of 0-15 mm.

9. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 1, characterized in that: When the housing to be clamped (100) is L-shaped, the clamping device further includes a gasket (7) and a second screw (8); the L-shaped housing to be clamped (100) includes a bottom crossbeam and a vertical beam perpendicular to each other; the bottom crossbeam is fixed on the base (1); the gasket (7) is arranged on the upper surface of the bottom crossbeam of the housing to be clamped (100); the second screw (8) passes through the gasket (7) and the through hole on the housing to be clamped (100) and cooperates with the threaded hole on the base (1).

10. The positioning and clamping device for slot processing on a CNC slotting machine according to claim 1, characterized in that: N groups of pressing plates (5), first screws (6) and support rods (4) are respectively provided for pressing, where N is a positive integer.

Images