A c-axis position adjustable internal thread grinder

Abstract

The application discloses a C-shaft position-adjustable internal thread grinder, which comprises a bed body, an X-shaft assembly platform, a Z-shaft assembly, an internal grinding head assembly, a C-shaft adjusting platform, a C-shaft support frame, fastening bolts, a C-shaft assembly, a four-jaw single-acting chuck, a triangular support and a profile modification spindle assembly. Compared with the prior art, the C-shaft assembly can be moved along the V-flat guide rail, the workpiece is fixed after the appropriate position is selected according to the size of the workpiece, the end thread is ground in cooperation with the triangular support, and the conventional nut can be ground only by moving the C-shaft assembly to the right end. The application solves the industry problem that the end internal thread of a large workpiece cannot be ground, can also be used for conventional grinding, and expands the application range of the machine tool.

Description

Technical Field

[0001] This invention relates to the field of internal thread grinding technology, specifically to an internal thread grinding machine with adjustable C-axis position. Background Technology

[0002] With the continuous improvement of my country's industrial strength, complex working conditions, the rapid development of humanoid robots, and the domestic substitution of high-end equipment, the demand for internal thread grinding equipment has increased, and new working conditions have emerged that traditional internal thread grinding machines cannot meet. Two typical examples of these new working conditions are: one is the grinding of the internal threads of a multi-stage electric cylinder's integrated internal and external threaded screw; the other is the grinding of the internal threads of a power spindle in an electric spindle. The common process characteristics and challenges for both types of workpieces are: both have undergone quenching treatment and have high surface hardness; high machining accuracy is required, and turning is insufficient to meet their needs.

[0003] Conventional internal thread grinding machines, such as the SK7640 CNC internal thread grinding machine, have internal threads on the end of the push rod, and the push rod nut is an integral design. The electric spindle power shaft is generally a solid shaft with internal threads at the end. Therefore, this type of internal thread grinding machine is suitable for grinding internal threads of small workpieces with a small length-to-diameter ratio, but cannot meet the requirements for grinding internal threads of new types of workpieces. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention discloses a C-axis position adjustable internal thread grinding machine, including a bed and X-axis assembly platform, a Z-axis assembly, an internal grinding head assembly, a C-axis adjustment platform, a C-axis support frame, fastening bolts, a C-axis assembly, a four-jaw single-action chuck, a triangular bracket, and a shaping spindle assembly; the Z-axis assembly is mounted on the right side of the upper side of the bed and X-axis assembly, and the internal grinding head assembly is mounted on the Z-axis assembly; the C-axis adjustment platform is mounted on the left side of the upper side of the bed and X-axis assembly platform; the C-axis support frame is fixed to the C-axis adjustment platform with fastening bolts on both sides; the C-axis assembly is mounted on the C-axis support frame, and a four-jaw single-action chuck is mounted on its right end; the workpiece to be ground is fixedly mounted on the right end of the four-jaw single-action chuck, and a triangular bracket is added to the middle of the workpiece to be ground, with the bottom of the triangular bracket fixed to the C-axis adjustment platform; the shaping spindle assembly is mounted on the left side of the upper side of the bed and X-axis assembly platform, located behind the C-axis adjustment platform.

[0005] As a preferred embodiment of the present invention, the upper side of the C-axis adjustment platform and the lower side of the C-axis support frame are provided with mutually cooperating V-flat guide rails. The direction of the guide rails is parallel to the Z-axis direction, and workpieces of different lengths can be processed by adjusting the C-axis.

[0006] As a preferred embodiment of the present invention, the C-axis adjustment platform is provided with a T-shaped groove, and the fastening bolts are screwed into the T-shaped groove when tightening and fixing, so that the C-axis support frame can be easily fixed by the fastening bolts.

[0007] As a preferred embodiment of the present invention, when the workpiece to be ground is a long workpiece, the triangular bracket is installed in the center; when the workpiece to be ground is a short workpiece, the right end does not need to be equipped with a triangular bracket.

[0008] The beneficial effects of this invention are as follows: The C-axis assembly is designed to move along a V-shaped flat guide rail. After selecting a suitable position based on the workpiece size, it is fixed and, in conjunction with a triangular bracket, the end threads are ground. For conventional nuts, simply moving the C-axis assembly to the right end allows for grinding. This solves the industry problem of grinding the internal threads at the ends of large workpieces, and also allows for conventional grinding, thus expanding the application range of the machine tool. Attached Figure Description

[0009] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0010] Figure 1 This is the front view of the present invention;

[0011] Figure 2 This invention is in use. Figure 1 ;

[0012] Figure 3 This invention is in use. Figure 2 ;

[0013] In the diagram: 1. Bed and X-axis assembly platform; 2. Z-axis assembly; 3. Internal grinding head assembly; 4. C-axis adjustment platform; 5. C-axis support frame; 6. Fastening bolts; 7. C-axis assembly; 8. Four-jaw single-action chuck; 9. Short workpiece; 10. Triangular bracket; 11. Long workpiece; 12. Shaping spindle assembly. Detailed Implementation

[0014] Example 1

[0015] like Figures 1 to 3As shown, this invention discloses a C-axis position adjustable internal thread grinding machine, including a bed and X-axis assembly platform 1, a Z-axis assembly 2, an internal grinding head assembly 3, a C-axis adjustment platform 4, a C-axis support frame 5, fastening bolts 6, a C-axis assembly 7, a four-jaw single-action chuck 8, a triangular bracket 10, and a shaping spindle assembly 12; the Z-axis assembly 2 is mounted on the right side of the upper side of the bed and X-axis assembly 1, and the internal grinding head assembly 3 is mounted on the Z-axis assembly 2; the C-axis adjustment platform 4 is mounted on the bed and X-axis assembly platform 1. On the upper left side, the C-axis support frame 5 is fixed to the C-axis adjustment platform 4 with fastening bolts 6 on both sides; the C-axis assembly 7 is mounted on the C-axis support frame 5, and a four-jaw single-action chuck 8 is mounted on its right end; the workpiece to be ground is fixedly mounted on the right end of the four-jaw single-action chuck 8, and a triangular bracket 10 is added in the middle of the workpiece to be ground, with the bottom of the triangular bracket 10 fixed to the C-axis adjustment platform 4; the shaping spindle assembly 12 is mounted on the upper left side of the bed and the X-axis assembly platform 1, located behind the C-axis adjustment platform 4. This invention allows the C-axis assembly 7 to move along the V-flat guide rail. After selecting a suitable position according to the workpiece size, it is fixed and used in conjunction with the triangular bracket 10 to grind the end threads. For conventional nuts, simply moving the C-axis assembly to the right end allows for grinding. This solves the industry problem of grinding the internal threads at the ends of large workpieces, and also allows for conventional grinding, expanding the application range of the machine tool.

[0016] Before grinding the internal threads of a workpiece, this invention first adjusts the position of the C-axis assembly 7 according to the length of the workpiece. If the workpiece is a long workpiece 11, the C-axis assembly 7 is moved to the left end of the C-axis adjustment platform 4, and the grinding of the internal threads at the end of the long workpiece 11 can be completed by the mating triangular bracket 10. If the workpiece is a short workpiece 9, the C-axis assembly 7 is adjusted to the right end, and the short workpiece 9 can be ground normally without the need for a center rest. Before adjusting the position of the C-axis assembly 7, the fastening bolts 6 are loosened. After the adjustment is in place, the fastening bolts 6 are tightened. The tightening process is carried out symmetrically and alternately from left to right to prevent the C-axis assembly 7 from being misaligned.

[0017] Components not described in detail in this article are existing technologies.

[0018] Although the specific embodiments of the present invention have been described in detail above, the present invention is mainly used for the SK7640 CNC internal thread grinding machine, and may not be fully applicable to other internal thread grinding machines.

Claims

1. A C-axis position adjustable internal thread grinding machine, characterized in that: The assembly includes a bed and X-axis assembly platform (1), a Z-axis assembly (2), an internal grinding head assembly (3), a C-axis adjustment platform (4), a C-axis support frame (5), fastening bolts (6), a C-axis assembly (7), a four-jaw single-action chuck (8), a triangular bracket (10), and a shaping spindle assembly (12). The Z-axis assembly (2) is mounted on the right side of the upper side of the bed and X-axis assembly (1), and the internal grinding head assembly (3) is mounted on the Z-axis assembly (2). The C-axis adjustment platform (4) is mounted on the left side of the upper side of the bed and X-axis assembly platform (1). The shaft support frame (5) is fitted with fastening bolts (6) on both sides and fixed on the C-axis adjustment platform (4); the C-axis assembly (7) is installed on the C-axis support frame (5), and a four-jaw single-acting chuck (8) is installed on its right end; the workpiece to be ground is fixedly installed on the right end of the four-jaw single-acting chuck (8), and a triangular bracket (10) is added in the middle of the workpiece to be ground. The bottom of the triangular bracket (10) is fixed on the C-axis adjustment platform (4); the shaping spindle assembly (12) is installed on the left side of the bed and the X-axis assembly platform (1), located on the rear side of the C-axis adjustment platform (4).

2. The C-axis position adjustable internal thread grinding machine according to claim 1, characterized in that: The upper side of the C-axis adjustment platform (4) and the lower side of the C-axis support frame (5) are provided with V-flat guide rails that cooperate with each other, and the direction of the guide rails is parallel to the Z-axis direction.

3. The C-axis position adjustable internal thread grinding machine according to claim 1, characterized in that: The C-axis adjustment platform (4) is provided with a T-shaped groove, and the fastening bolt (6) is screwed into the T-shaped groove when it is locked.

4. The C-axis position adjustable internal thread grinding machine according to claim 1, characterized in that: When the workpiece to be ground is a long workpiece (11), the triangular bracket (10) is installed in the center; when the workpiece to be ground is a short workpiece (9), the right end does not need to be equipped with the triangular bracket (10).

Images