A drilling device for building materials
A technology for building materials and punching devices, applied in metal processing and other directions, can solve problems such as large density distribution, large external dimensions, and difficulty in forming compact structures.
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[0008] Combine below figure 1 The present invention will be described in detail.
[0009] A punching device for building materials according to an embodiment is used to punch holes in building materials 94 below, and includes a housing 91 for abutting against the upper fixture 9, and the upper side wall of the housing 91 is Two jacking screw assemblies 8 are installed, and the two jacking screw assemblies 8 are arranged symmetrically with respect to the longitudinal axis of the housing 91 and each includes: a screw thread fixed on the upper side wall of the housing 91 The fixing sleeve 82, the pressing screw rod 81 threadedly engaged with the threaded hole 821 in the lower end wall of the threaded fixing sleeve 82, the pressing screw rod 81 located under the threaded fixing sleeve 82 and fixedly connected with the pressing screw rod 81 The screw gear 813 and the connecting sleeve member 88 connected to the lower end of the pressing screw 81 through the lower thrust bearing 81...
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